/*
- * Copyright (c) 2006-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2006-2015 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/attr.h>
#include <sys/signalvar.h>
#include <sys/uio_internal.h>
+#include <sys/xattr.h>
+#include <sys/paths.h>
#include <vfs/vfs_support.h>
#include <kern/task.h>
#include <kern/sched_prim.h>
-
int
-nfs4_access_rpc(nfsnode_t np, u_long *mode, vfs_context_t ctx)
+nfs4_access_rpc(nfsnode_t np, u_int32_t *access, int rpcflags, vfs_context_t ctx)
{
- int error = 0, status, numops, slot;
+ int error = 0, lockerror = ENOENT, status, numops, slot;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct timeval now;
- uint32_t access, supported = 0, missing;
+ uint32_t access_result = 0, supported = 0, missing;
struct nfsmount *nmp = NFSTONMP(np);
int nfsvers = nmp->nm_vers;
uid_t uid;
+ struct nfsreq_secinfo_args si;
+
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (0);
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
- numops = 3; // PUTFH + ACCESS + GETATTR
+ // PUTFH, ACCESS, GETATTR
+ numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 17 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "access", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "access", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_ACCESS);
- nfsm_chain_add_32(error, &nmreq, *mode);
+ nfsm_chain_add_32(error, &nmreq, *access);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx),
+ &si, rpcflags, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_ACCESS);
nfsm_chain_get_32(error, &nmrep, supported);
- nfsm_chain_get_32(error, &nmrep, access);
+ nfsm_chain_get_32(error, &nmrep, access_result);
nfsmout_if(error);
- if ((missing = (*mode & ~supported))) {
+ if ((missing = (*access & ~supported))) {
/* missing support for something(s) we wanted */
if (missing & NFS_ACCESS_DELETE) {
/*
* and just let any subsequent delete action fail
* if it really isn't deletable.
*/
- access |= NFS_ACCESS_DELETE;
+ access_result |= NFS_ACCESS_DELETE;
}
}
+ /* ".zfs" subdirectories may erroneously give a denied answer for modify/delete */
+ if (nfs_access_dotzfs) {
+ vnode_t dvp = NULLVP;
+ if (np->n_flag & NISDOTZFSCHILD) /* may be able to create/delete snapshot dirs */
+ access_result |= (NFS_ACCESS_MODIFY|NFS_ACCESS_EXTEND|NFS_ACCESS_DELETE);
+ else if (((dvp = vnode_getparent(NFSTOV(np))) != NULLVP) && (VTONFS(dvp)->n_flag & NISDOTZFSCHILD))
+ access_result |= NFS_ACCESS_DELETE; /* may be able to delete snapshot dirs */
+ if (dvp != NULLVP)
+ vnode_put(dvp);
+ }
+ /* Some servers report DELETE support but erroneously give a denied answer. */
+ if (nfs_access_delete && (*access & NFS_ACCESS_DELETE) && !(access_result & NFS_ACCESS_DELETE))
+ access_result |= NFS_ACCESS_DELETE;
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout_if(error);
uid = kauth_cred_getuid(vfs_context_ucred(ctx));
- slot = nfs_node_mode_slot(np, uid, 1);
- np->n_modeuid[slot] = uid;
+ slot = nfs_node_access_slot(np, uid, 1);
+ np->n_accessuid[slot] = uid;
microuptime(&now);
- np->n_modestamp[slot] = now.tv_sec;
- np->n_mode[slot] = access;
+ np->n_accessstamp[slot] = now.tv_sec;
+ np->n_access[slot] = access_result;
- /* pass back the mode returned with this request */
- *mode = np->n_mode[slot];
+ /* pass back the access returned with this request */
+ *access = np->n_access[slot];
nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
mount_t mp,
u_char *fhp,
size_t fhsize,
+ int flags,
vfs_context_t ctx,
struct nfs_vattr *nvap,
u_int64_t *xidp)
{
struct nfsmount *nmp = mp ? VFSTONFS(mp) : NFSTONMP(np);
- int error = 0, status, nfsvers, numops;
+ int error = 0, status, nfsvers, numops, rpcflags = 0, acls;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ acls = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL);
+
+ if (np && (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)) {
+ nfs4_default_attrs_for_referral_trigger(VTONFS(np->n_parent), NULL, 0, nvap, NULL);
+ return (0);
+ }
+
+ if (flags & NGA_MONITOR) /* vnode monitor requests should be soft */
+ rpcflags = R_RECOVER;
+
+ if (flags & NGA_SOFT) /* Return ETIMEDOUT if server not responding */
+ rpcflags |= R_SOFT;
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
- numops = 2; // PUTFH + GETATTR
+ // PUTFH, GETATTR
+ numops = 2;
nfsm_chain_build_alloc_init(error, &nmreq, 15 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "getattr", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "getattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, fhp, fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ if ((flags & NGA_ACL) && acls)
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_ACL);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(np, mp, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, xidp, &status);
+ error = nfs_request2(np, mp, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx),
+ NULL, rpcflags, &nmrep, xidp, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvap->nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL);
+ error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
+ nfsmout_if(error);
+ if ((flags & NGA_ACL) && acls && !NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_ACL)) {
+ /* we asked for the ACL but didn't get one... assume there isn't one */
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_ACL);
+ nvap->nva_acl = NULL;
+ }
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
uint32_t len = 0;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
- numops = 3; // PUTFH + GETATTR + READLINK
+ // PUTFH, GETATTR, READLINK
+ numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "readlink", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "readlink", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READLINK);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
- if ((lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READLINK);
nfsm_chain_get_32(error, &nmrep, len);
nfsmout_if(error);
*buflenp = len;
nfsmout:
if (!lockerror)
- nfs_unlock(np);
+ nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
{
struct nfsmount *nmp;
int error = 0, nfsvers, numops;
+ nfs_stateid stateid;
struct nfsm_chain nmreq;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
- // PUTFH + READ + GETATTR
+ // PUTFH, READ, GETATTR
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 22 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "read", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "read", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READ);
-
- /* XXX use special stateid for now */
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
-
+ nfs_get_stateid(np, thd, cred, &stateid);
+ nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_64(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, len);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, cb, reqp);
+ error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
nfs4_read_rpc_async_finish(
nfsnode_t np,
struct nfsreq *req,
- struct uio *uiop,
+ uio_t uio,
size_t *lenp,
int *eofp)
{
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
- if (!nmp) {
+ if (nfs_mount_gone(nmp)) {
nfs_request_async_cancel(req);
return (ENXIO);
}
if (error == EINPROGRESS) /* async request restarted */
return (error);
- if ((lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_get_32(error, &nmrep, retlen);
if (!error) {
*lenp = MIN(retlen, *lenp);
- error = nfsm_chain_get_uio(&nmrep, *lenp, uiop);
+ error = nfsm_chain_get_uio(&nmrep, *lenp, uio);
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (!lockerror)
- nfs_unlock(np);
+ nfs_node_unlock(np);
if (eofp) {
if (!eof && !retlen)
eof = 1;
*eofp = eof;
}
nfsm_chain_cleanup(&nmrep);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)
+ microuptime(&np->n_lastio);
return (error);
}
int
nfs4_write_rpc_async(
nfsnode_t np,
- struct uio *uiop,
+ uio_t uio,
size_t len,
thread_t thd,
kauth_cred_t cred,
struct nfsreq **reqp)
{
struct nfsmount *nmp;
+ mount_t mp;
int error = 0, nfsvers, numops;
- off_t offset;
+ nfs_stateid stateid;
struct nfsm_chain nmreq;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
- offset = uiop->uio_offset;
+ /* for async mounts, don't bother sending sync write requests */
+ if ((iomode != NFS_WRITE_UNSTABLE) && nfs_allow_async &&
+ ((mp = NFSTOMP(np))) && (vfs_flags(mp) & MNT_ASYNC))
+ iomode = NFS_WRITE_UNSTABLE;
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
- // PUTFH + WRITE + GETATTR
+ // PUTFH, WRITE, GETATTR
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 25 * NFSX_UNSIGNED + len);
- nfsm_chain_add_compound_header(error, &nmreq, "write", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "write", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_WRITE);
-
- /* XXX use special stateid for now */
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
- nfsm_chain_add_32(error, &nmreq, 0xffffffff);
-
- nfsm_chain_add_64(error, &nmreq, uiop->uio_offset);
+ nfs_get_stateid(np, thd, cred, &stateid);
+ nfsm_chain_add_stateid(error, &nmreq, &stateid);
+ nfsm_chain_add_64(error, &nmreq, uio_offset(uio));
nfsm_chain_add_32(error, &nmreq, iomode);
nfsm_chain_add_32(error, &nmreq, len);
if (!error)
- error = nfsm_chain_add_uio(&nmreq, uiop, len);
+ error = nfsm_chain_add_uio(&nmreq, uio, len);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, cb, reqp);
+ error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
- if (!nmp) {
+ if (nfs_mount_gone(nmp)) {
nfs_request_async_cancel(req);
return (ENXIO);
}
if (error == EINPROGRESS) /* async request restarted */
return (error);
nmp = NFSTONMP(np);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
error = ENXIO;
- if (!error && (lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if (!error && (lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
}
lck_mtx_unlock(&nmp->nm_lock);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout:
if (!lockerror)
- nfs_unlock(np);
+ nfs_node_unlock(np);
nfsm_chain_cleanup(&nmrep);
if ((committed != NFS_WRITE_FILESYNC) && nfs_allow_async &&
((mp = NFSTOMP(np))) && (vfs_flags(mp) & MNT_ASYNC))
committed = NFS_WRITE_FILESYNC;
*iomodep = committed;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)
+ microuptime(&np->n_lastio);
return (error);
}
thread_t thd,
kauth_cred_t cred)
{
- int error = 0, remove_error = 0, status;
+ int error = 0, lockerror = ENOENT, remove_error = 0, status;
struct nfsmount *nmp;
int nfsvers, numops;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
-
+ if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
+restart:
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
// PUTFH, REMOVE, GETATTR
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 17 * NFSX_UNSIGNED + namelen);
- nfsm_chain_add_compound_header(error, &nmreq, "remove", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "remove", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_REMOVE);
- nfsm_chain_add_string(error, &nmreq, name, namelen);
+ nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request2(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, 0, &nmrep, &xid, &status);
+ error = nfs_request2(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock(dnp)))
+ error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
remove_error = error;
nfsm_chain_check_change_info(error, &nmrep, dnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, NULL, &xid);
- if (error)
+ nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
+ if (error && !lockerror)
NATTRINVALIDATE(dnp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
- dnp->n_flag |= NMODIFIED;
+ if (!lockerror) {
+ dnp->n_flag |= NMODIFIED;
+ nfs_node_unlock(dnp);
+ }
+ if (error == NFSERR_GRACE) {
+ tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
+ goto restart;
+ }
return (remove_error);
}
int tnamelen,
vfs_context_t ctx)
{
- int error = 0, status, nfsvers, numops;
+ int error = 0, lockerror = ENOENT, status, nfsvers, numops;
struct nfsmount *nmp;
u_int64_t xid, savedxid;
struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(fdnp);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (fdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ if (tdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, fdnp, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
// PUTFH(FROM), SAVEFH, PUTFH(TO), RENAME, GETATTR(TO), RESTOREFH, GETATTR(FROM)
numops = 7;
nfsm_chain_build_alloc_init(error, &nmreq, 30 * NFSX_UNSIGNED + fnamelen + tnamelen);
- nfsm_chain_add_compound_header(error, &nmreq, "rename", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "rename", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, fdnp->n_fhp, fdnp->n_fhsize);
nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RENAME);
- nfsm_chain_add_string(error, &nmreq, fnameptr, fnamelen);
- nfsm_chain_add_string(error, &nmreq, tnameptr, tnamelen);
+ nfsm_chain_add_name(error, &nmreq, fnameptr, fnamelen, nmp);
+ nfsm_chain_add_name(error, &nmreq, tnameptr, tnamelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, tdnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, fdnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(fdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request(fdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock2(fdnp, tdnp)))
+ error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
/* directory attributes: if we don't get them, make sure to invalidate */
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
savedxid = xid;
- nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, NULL, &xid);
- if (error)
+ nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, &xid);
+ if (error && !lockerror)
NATTRINVALIDATE(tdnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
xid = savedxid;
- nfsm_chain_loadattr(error, &nmrep, fdnp, nfsvers, NULL, &xid);
- if (error)
+ nfsm_chain_loadattr(error, &nmrep, fdnp, nfsvers, &xid);
+ if (error && !lockerror)
NATTRINVALIDATE(fdnp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
- fdnp->n_flag |= NMODIFIED;
- tdnp->n_flag |= NMODIFIED;
- /* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. */
- if (error == EEXIST)
- error = 0;
+ if (!lockerror) {
+ fdnp->n_flag |= NMODIFIED;
+ tdnp->n_flag |= NMODIFIED;
+ nfs_node_unlock2(fdnp, tdnp);
+ }
return (error);
}
/*
* NFS V4 readdir RPC.
*/
-#define DIRHDSIZ ((int)(sizeof(struct dirent) - (MAXNAMLEN + 1)))
int
-nfs4_readdir_rpc(nfsnode_t dnp, struct uio *uiop, vfs_context_t ctx)
+nfs4_readdir_rpc(nfsnode_t dnp, struct nfsbuf *bp, vfs_context_t ctx)
{
- size_t len, tlen, skiplen, left;
- struct dirent *dp = NULL;
- vnode_t newvp;
- nfsuint64 *cookiep;
- struct componentname cn, *cnp = &cn;
- nfsuint64 cookie;
struct nfsmount *nmp;
- nfsnode_t np;
- int error = 0, lockerror, status, more_entries = 1, blksiz = 0, bigenough = 1;
- int nfsvers, rdirplus, nmreaddirsize, nmrsize, eof, i, numops;
- u_int64_t xid, savexid;
- struct nfs_vattr nvattr;
- struct nfsm_chain nmreq, nmrep;
- char *cp;
+ int error = 0, lockerror, nfsvers, namedattr, rdirplus, bigcookies, numops;
+ int i, status, more_entries = 1, eof, bp_dropped = 0;
+ uint32_t nmreaddirsize, nmrsize;
+ uint32_t namlen, skiplen, fhlen, xlen, attrlen, reclen, space_free, space_needed;
+ uint64_t cookie, lastcookie, xid, savedxid;
+ struct nfsm_chain nmreq, nmrep, nmrepsave;
+ fhandle_t fh;
+ struct nfs_vattr nvattr, *nvattrp;
+ struct nfs_dir_buf_header *ndbhp;
+ struct direntry *dp;
+ char *padstart, padlen;
const char *tag;
uint32_t entry_attrs[NFS_ATTR_BITMAP_LEN];
- fhandle_t fh;
+ struct timeval now;
+ struct nfsreq_secinfo_args si;
-#if DIAGNOSTIC
- /* XXX limitation based on need to adjust uio */
- if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
- (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)))
- panic("nfs4_readdir_rpc: bad uio");
-#endif
nmp = NFSTONMP(dnp);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
nmreaddirsize = nmp->nm_readdirsize;
nmrsize = nmp->nm_rsize;
- rdirplus = (nmp->nm_flag & NFSMNT_RDIRPLUS) ? 1 : 0;
-
- bzero(cnp, sizeof(*cnp));
- newvp = NULLVP;
+ bigcookies = nmp->nm_state & NFSSTA_BIGCOOKIES;
+ namedattr = (dnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) ? 1 : 0;
+ rdirplus = (NMFLAG(nmp, RDIRPLUS) || namedattr) ? 1 : 0;
+ if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
/*
* Set up attribute request for entries.
* For READDIRPLUS functionality, get everything.
- * Otherwise, just get what we need for struct dirent.
+ * Otherwise, just get what we need for struct direntry.
*/
if (rdirplus) {
- tag = "READDIRPLUS";
- for (i=0; i < NFS_ATTR_BITMAP_LEN; i++)
- entry_attrs[i] =
- nfs_getattr_bitmap[i] &
- nmp->nm_fsattr.nfsa_supp_attr[i];
+ tag = "readdirplus";
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, entry_attrs);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_FILEHANDLE);
} else {
- tag = "READDIR";
+ tag = "readdir";
NFS_CLEAR_ATTRIBUTES(entry_attrs);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_TYPE);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_FILEID);
+ NFS_BITMAP_SET(entry_attrs, NFS_FATTR_MOUNTED_ON_FILEID);
}
- /* XXX NFS_BITMAP_SET(entry_attrs, NFS_FATTR_MOUNTED_ON_FILEID); */
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_RDATTR_ERROR);
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_SHARED)))
+ /* lock to protect access to cookie verifier */
+ if ((lockerror = nfs_node_lock(dnp)))
return (lockerror);
- /*
- * If there is no cookie, assume directory was stale.
- */
- cookiep = nfs_getcookie(dnp, uiop->uio_offset, 0);
- if (cookiep)
- cookie = *cookiep;
- else {
- nfs_unlock(dnp);
- return (NFSERR_BAD_COOKIE);
+ /* determine cookie to use, and move dp to the right offset */
+ ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
+ dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
+ if (ndbhp->ndbh_count) {
+ for (i=0; i < ndbhp->ndbh_count-1; i++)
+ dp = NFS_DIRENTRY_NEXT(dp);
+ cookie = dp->d_seekoff;
+ dp = NFS_DIRENTRY_NEXT(dp);
+ } else {
+ cookie = bp->nb_lblkno;
+ /* increment with every buffer read */
+ OSAddAtomic64(1, &nfsstats.readdir_bios);
}
+ lastcookie = cookie;
/*
- * The NFS client is responsible for the "." and ".."
- * entries in the directory. So, we put them at the top.
+ * The NFS client is responsible for the "." and ".." entries in the
+ * directory. So, we put them at the start of the first buffer.
+ * Don't bother for attribute directories.
*/
- if ((uiop->uio_offset == 0) &&
- ((2*(4 + DIRHDSIZ)) <= uio_uio_resid(uiop))) {
- /* add "." entry */
- len = 2;
- tlen = nfsm_rndup(len);
- // LP64todo - fix this!
- dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
+ if (((bp->nb_lblkno == 0) && (ndbhp->ndbh_count == 0)) &&
+ !(dnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)) {
+ fh.fh_len = 0;
+ fhlen = rdirplus ? fh.fh_len + 1 : 0;
+ xlen = rdirplus ? (fhlen + sizeof(time_t)) : 0;
+ /* "." */
+ namlen = 1;
+ reclen = NFS_DIRENTRY_LEN(namlen + xlen);
+ if (xlen)
+ bzero(&dp->d_name[namlen+1], xlen);
+ dp->d_namlen = namlen;
+ strlcpy(dp->d_name, ".", namlen+1);
dp->d_fileno = dnp->n_vattr.nva_fileid;
- dp->d_namlen = len;
- dp->d_reclen = tlen + DIRHDSIZ;
dp->d_type = DT_DIR;
- strlcpy(dp->d_name, ".", len);
- blksiz += dp->d_reclen;
- if (blksiz == DIRBLKSIZ)
- blksiz = 0;
- uiop->uio_offset += DIRHDSIZ + tlen;
- uio_iov_base_add(uiop, DIRHDSIZ + tlen);
- uio_uio_resid_add(uiop, -(DIRHDSIZ + tlen));
- uio_iov_len_add(uiop, -(DIRHDSIZ + tlen));
- /* add ".." entry */
- len = 3;
- tlen = nfsm_rndup(len);
- // LP64todo - fix this!
- dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
+ dp->d_reclen = reclen;
+ dp->d_seekoff = 1;
+ padstart = dp->d_name + dp->d_namlen + 1 + xlen;
+ dp = NFS_DIRENTRY_NEXT(dp);
+ padlen = (char*)dp - padstart;
+ if (padlen > 0)
+ bzero(padstart, padlen);
+ if (rdirplus) /* zero out attributes */
+ bzero(NFS_DIR_BUF_NVATTR(bp, 0), sizeof(struct nfs_vattr));
+
+ /* ".." */
+ namlen = 2;
+ reclen = NFS_DIRENTRY_LEN(namlen + xlen);
+ if (xlen)
+ bzero(&dp->d_name[namlen+1], xlen);
+ dp->d_namlen = namlen;
+ strlcpy(dp->d_name, "..", namlen+1);
if (dnp->n_parent)
dp->d_fileno = VTONFS(dnp->n_parent)->n_vattr.nva_fileid;
else
dp->d_fileno = dnp->n_vattr.nva_fileid;
- dp->d_namlen = len;
- dp->d_reclen = tlen + DIRHDSIZ;
dp->d_type = DT_DIR;
- strlcpy(dp->d_name, "..", len);
- blksiz += dp->d_reclen;
- if (blksiz == DIRBLKSIZ)
- blksiz = 0;
- uiop->uio_offset += DIRHDSIZ + tlen;
- uio_iov_base_add(uiop, DIRHDSIZ + tlen);
- uio_uio_resid_add(uiop, -(DIRHDSIZ + tlen));
- uio_iov_len_add(uiop, -(DIRHDSIZ + tlen));
- cookie.nfsuquad[0] = 0;
- cookie.nfsuquad[1] = 2;
+ dp->d_reclen = reclen;
+ dp->d_seekoff = 2;
+ padstart = dp->d_name + dp->d_namlen + 1 + xlen;
+ dp = NFS_DIRENTRY_NEXT(dp);
+ padlen = (char*)dp - padstart;
+ if (padlen > 0)
+ bzero(padstart, padlen);
+ if (rdirplus) /* zero out attributes */
+ bzero(NFS_DIR_BUF_NVATTR(bp, 1), sizeof(struct nfs_vattr));
+
+ ndbhp->ndbh_entry_end = (char*)dp - bp->nb_data;
+ ndbhp->ndbh_count = 2;
}
/*
- * Loop around doing readdir rpc's of size nm_readdirsize
- * truncated to a multiple of DIRBLKSIZ.
- * The stopping criteria is EOF or buffer full.
+ * Loop around doing readdir(plus) RPCs of size nm_readdirsize until
+ * the buffer is full (or we hit EOF). Then put the remainder of the
+ * results in the next buffer(s).
*/
- while (more_entries && bigenough) {
- nfsm_chain_null(&nmreq);
- nfsm_chain_null(&nmrep);
- nfsm_assert(error, NFSTONMP(dnp), ENXIO);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+ while (nfs_dir_buf_freespace(bp, rdirplus) && !(ndbhp->ndbh_flags & NDB_FULL)) {
- numops = 3; // PUTFH + GETATTR + READDIR
+ // PUTFH, GETATTR, READDIR
+ numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, tag, numops);
+ nfsm_chain_add_compound_header(error, &nmreq, tag, nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READDIR);
- /* opaque values don't need swapping, but as long */
- /* as we are consistent about it, it should be ok */
- nfsm_chain_add_32(error, &nmreq, cookie.nfsuquad[0]);
- if ((cookie.nfsuquad[0] == 0) && (cookie.nfsuquad[1] <= 2))
- nfsm_chain_add_32(error, &nmreq, 0);
- else
- nfsm_chain_add_32(error, &nmreq, cookie.nfsuquad[1]);
- nfsm_chain_add_32(error, &nmreq, dnp->n_cookieverf.nfsuquad[0]);
- nfsm_chain_add_32(error, &nmreq, dnp->n_cookieverf.nfsuquad[1]);
+ nfsm_chain_add_64(error, &nmreq, (cookie <= 2) ? 0 : cookie);
+ nfsm_chain_add_64(error, &nmreq, dnp->n_cookieverf);
nfsm_chain_add_32(error, &nmreq, nmreaddirsize);
nfsm_chain_add_32(error, &nmreq, nmrsize);
- nfsm_chain_add_bitmap(error, &nmreq, entry_attrs, NFS_ATTR_BITMAP_LEN);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, entry_attrs, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
- nfs_unlock(dnp);
+ nfs_node_unlock(dnp);
nfsmout_if(error);
- error = nfs_request(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_EXCLUSIVE)))
+ if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
- savexid = xid;
+
+ savedxid = xid;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READDIR);
- nfsm_chain_get_32(error, &nmrep, dnp->n_cookieverf.nfsuquad[0]);
- nfsm_chain_get_32(error, &nmrep, dnp->n_cookieverf.nfsuquad[1]);
+ nfsm_chain_get_64(error, &nmrep, dnp->n_cookieverf);
nfsm_chain_get_32(error, &nmrep, more_entries);
- nfs_unlock(dnp);
+
+ if (!lockerror) {
+ nfs_node_unlock(dnp);
+ lockerror = ENOENT;
+ }
nfsmout_if(error);
- /* Loop through the entries, massaging them into "dirent" form. */
- /* If READDIRPLUS, also create the vnodes. */
- while (more_entries && bigenough) {
+ if (rdirplus)
+ microuptime(&now);
+
+ /* loop through the entries packing them into the buffer */
+ while (more_entries) {
/* Entry: COOKIE, NAME, FATTR */
- nfsm_chain_get_32(error, &nmrep, cookie.nfsuquad[0]);
- nfsm_chain_get_32(error, &nmrep, cookie.nfsuquad[1]);
- nfsm_chain_get_32(error, &nmrep, len);
+ nfsm_chain_get_64(error, &nmrep, cookie);
+ nfsm_chain_get_32(error, &nmrep, namlen);
nfsmout_if(error);
- /* Note: NFS supports longer names, but struct dirent doesn't */
- /* so we just truncate the names to fit */
- if (len <= 0) {
+ if (!bigcookies && (cookie >> 32) && (nmp == NFSTONMP(dnp))) {
+ /* we've got a big cookie, make sure flag is set */
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state |= NFSSTA_BIGCOOKIES;
+ lck_mtx_unlock(&nmp->nm_lock);
+ bigcookies = 1;
+ }
+ /* just truncate names that don't fit in direntry.d_name */
+ if (namlen <= 0) {
error = EBADRPC;
goto nfsmout;
}
- if (len > MAXNAMLEN) {
- skiplen = len - MAXNAMLEN;
- len = MAXNAMLEN;
+ if (namlen > (sizeof(dp->d_name)-1)) {
+ skiplen = namlen - sizeof(dp->d_name) + 1;
+ namlen = sizeof(dp->d_name) - 1;
} else {
skiplen = 0;
}
- tlen = nfsm_rndup(len);
- if (tlen == len)
- tlen += 4; /* To ensure null termination */
- left = DIRBLKSIZ - blksiz;
- if ((tlen + DIRHDSIZ) > left) {
- dp->d_reclen += left;
- uio_iov_base_add(uiop, left);
- uio_iov_len_add(uiop, -left);
- uiop->uio_offset += left;
- uio_uio_resid_add(uiop, -left);
- blksiz = 0;
- }
- if ((tlen + DIRHDSIZ) > uio_uio_resid(uiop)) {
- bigenough = 0;
- break;
+ /* guess that fh size will be same as parent */
+ fhlen = rdirplus ? (1 + dnp->n_fhsize) : 0;
+ xlen = rdirplus ? (fhlen + sizeof(time_t)) : 0;
+ attrlen = rdirplus ? sizeof(struct nfs_vattr) : 0;
+ reclen = NFS_DIRENTRY_LEN(namlen + xlen);
+ space_needed = reclen + attrlen;
+ space_free = nfs_dir_buf_freespace(bp, rdirplus);
+ if (space_needed > space_free) {
+ /*
+ * We still have entries to pack, but we've
+ * run out of room in the current buffer.
+ * So we need to move to the next buffer.
+ * The block# for the next buffer is the
+ * last cookie in the current buffer.
+ */
+nextbuffer:
+ ndbhp->ndbh_flags |= NDB_FULL;
+ nfs_buf_release(bp, 0);
+ bp_dropped = 1;
+ bp = NULL;
+ error = nfs_buf_get(dnp, lastcookie, NFS_DIRBLKSIZ, vfs_context_thread(ctx), NBLK_READ, &bp);
+ nfsmout_if(error);
+ /* initialize buffer */
+ ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
+ ndbhp->ndbh_flags = 0;
+ ndbhp->ndbh_count = 0;
+ ndbhp->ndbh_entry_end = sizeof(*ndbhp);
+ ndbhp->ndbh_ncgen = dnp->n_ncgen;
+ space_free = nfs_dir_buf_freespace(bp, rdirplus);
+ dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
+ /* increment with every buffer read */
+ OSAddAtomic64(1, &nfsstats.readdir_bios);
}
- // LP64todo - fix this!
- dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
- dp->d_fileno = 0;
- dp->d_namlen = len;
- dp->d_reclen = tlen + DIRHDSIZ;
+ nmrepsave = nmrep;
+ dp->d_fileno = cookie; /* placeholder */
+ dp->d_seekoff = cookie;
+ dp->d_namlen = namlen;
+ dp->d_reclen = reclen;
dp->d_type = DT_UNKNOWN;
- blksiz += dp->d_reclen;
- if (blksiz == DIRBLKSIZ)
- blksiz = 0;
- uiop->uio_offset += DIRHDSIZ;
-#if LP64KERN
- uio_uio_resid_add(uiop, -((int64_t)DIRHDSIZ));
- uio_iov_len_add(uiop, -((int64_t)DIRHDSIZ));
-#else
- uio_uio_resid_add(uiop, -((int)DIRHDSIZ));
- uio_iov_len_add(uiop, -((int)DIRHDSIZ));
-#endif
- uio_iov_base_add(uiop, DIRHDSIZ);
- // LP64todo - fix this!
- cnp->cn_nameptr = CAST_DOWN(caddr_t, uio_iov_base(uiop));
- cnp->cn_namelen = len;
- error = nfsm_chain_get_uio(&nmrep, len, uiop);
+ nfsm_chain_get_opaque(error, &nmrep, namlen, dp->d_name);
+ nfsmout_if(error);
+ dp->d_name[namlen] = '\0';
if (skiplen)
nfsm_chain_adv(error, &nmrep,
- nfsm_rndup(len + skiplen) - nfsm_rndup(len));
+ nfsm_rndup(namlen + skiplen) - nfsm_rndup(namlen));
nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL);
- if (error && NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_RDATTR_ERROR)) {
- /* OK, we didn't get attributes, whatever... */
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
+ nvattrp = rdirplus ? NFS_DIR_BUF_NVATTR(bp, ndbhp->ndbh_count) : &nvattr;
+ error = nfs4_parsefattr(&nmrep, NULL, nvattrp, &fh, NULL, NULL);
+ if (!error && NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_ACL)) {
+ /* we do NOT want ACLs returned to us here */
+ NFS_BITMAP_CLR(nvattrp->nva_bitmap, NFS_FATTR_ACL);
+ if (nvattrp->nva_acl) {
+ kauth_acl_free(nvattrp->nva_acl);
+ nvattrp->nva_acl = NULL;
+ }
+ }
+ if (error && NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_RDATTR_ERROR)) {
+ /* OK, we may not have gotten all of the attributes but we will use what we can. */
+ if ((error == NFSERR_MOVED) || (error == NFSERR_INVAL)) {
+ /* set this up to look like a referral trigger */
+ nfs4_default_attrs_for_referral_trigger(dnp, dp->d_name, namlen, nvattrp, &fh);
+ }
error = 0;
}
+ /* check for more entries after this one */
nfsm_chain_get_32(error, &nmrep, more_entries);
nfsmout_if(error);
- cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
- tlen -= len;
- *cp = '\0';
- uio_iov_base_add(uiop, tlen);
- uio_iov_len_add(uiop, -tlen);
- uiop->uio_offset += tlen;
- uio_uio_resid_add(uiop, -tlen);
-
- /*
- * Skip any "." and ".." entries returned from server.
- * (Actually, just leave it in place with d_fileno == 0.)
- */
- if ((cnp->cn_nameptr[0] == '.') &&
- ((len == 1) || ((len == 2) && (cnp->cn_nameptr[1] == '.')))) {
- /* clear the name too */
- dp->d_namlen = 0;
- dp->d_name[0] = '\0';
+ /* Skip any "." and ".." entries returned from server. */
+ /* Also skip any bothersome named attribute entries. */
+ if (((dp->d_name[0] == '.') && ((namlen == 1) || ((namlen == 2) && (dp->d_name[1] == '.')))) ||
+ (namedattr && (namlen == 11) && (!strcmp(dp->d_name, "SUNWattr_ro") || !strcmp(dp->d_name, "SUNWattr_rw")))) {
+ lastcookie = cookie;
continue;
}
- if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_TYPE))
- dp->d_type = IFTODT(VTTOIF(nvattr.nva_type));
- if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEID))
- dp->d_fileno = (int)nvattr.nva_fileid;
- if (rdirplus && NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) &&
- !NFS_CMPFH(dnp, fh.fh_data, fh.fh_len)) {
- cnp->cn_hash = 0;
- error = nfs_nget(NFSTOMP(dnp), dnp, cnp,
- fh.fh_data, fh.fh_len, &nvattr, &xid, NG_MAKEENTRY, &np);
- if (!error) {
- nfs_unlock(np);
- vnode_put(NFSTOV(np));
+ if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_TYPE))
+ dp->d_type = IFTODT(VTTOIF(nvattrp->nva_type));
+ if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_FILEID))
+ dp->d_fileno = nvattrp->nva_fileid;
+ if (rdirplus) {
+ /* fileid is already in d_fileno, so stash xid in attrs */
+ nvattrp->nva_fileid = savedxid;
+ if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ fhlen = fh.fh_len + 1;
+ xlen = fhlen + sizeof(time_t);
+ reclen = NFS_DIRENTRY_LEN(namlen + xlen);
+ space_needed = reclen + attrlen;
+ if (space_needed > space_free) {
+ /* didn't actually have the room... move on to next buffer */
+ nmrep = nmrepsave;
+ goto nextbuffer;
+ }
+ /* pack the file handle into the record */
+ dp->d_name[dp->d_namlen+1] = fh.fh_len;
+ bcopy(fh.fh_data, &dp->d_name[dp->d_namlen+2], fh.fh_len);
+ } else {
+ /* mark the file handle invalid */
+ fh.fh_len = 0;
+ fhlen = fh.fh_len + 1;
+ xlen = fhlen + sizeof(time_t);
+ reclen = NFS_DIRENTRY_LEN(namlen + xlen);
+ bzero(&dp->d_name[dp->d_namlen+1], fhlen);
}
+ *(time_t*)(&dp->d_name[dp->d_namlen+1+fhlen]) = now.tv_sec;
+ dp->d_reclen = reclen;
}
- nfsmout_if(error);
+ padstart = dp->d_name + dp->d_namlen + 1 + xlen;
+ ndbhp->ndbh_count++;
+ lastcookie = cookie;
+
+ /* advance to next direntry in buffer */
+ dp = NFS_DIRENTRY_NEXT(dp);
+ ndbhp->ndbh_entry_end = (char*)dp - bp->nb_data;
+ /* zero out the pad bytes */
+ padlen = (char*)dp - padstart;
+ if (padlen > 0)
+ bzero(padstart, padlen);
}
- /* If at end of rpc data, get the eof boolean */
- if (!more_entries) {
- nfsm_chain_get_32(error, &nmrep, eof);
- if (!error)
- more_entries = (eof == 0);
+ /* Finally, get the eof boolean */
+ nfsm_chain_get_32(error, &nmrep, eof);
+ nfsmout_if(error);
+ if (eof) {
+ ndbhp->ndbh_flags |= (NDB_FULL|NDB_EOF);
+ nfs_node_lock_force(dnp);
+ dnp->n_eofcookie = lastcookie;
+ nfs_node_unlock(dnp);
+ } else {
+ more_entries = 1;
+ }
+ if (bp_dropped) {
+ nfs_buf_release(bp, 0);
+ bp = NULL;
+ break;
}
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_SHARED)))
+ if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsmout_if(error);
nfsm_chain_cleanup(&nmrep);
+ nfsm_chain_null(&nmreq);
}
- nfs_unlock(dnp);
- /*
- * Fill last record, iff any, out to a multiple of DIRBLKSIZ
- * by increasing d_reclen for the last record.
- */
- if (blksiz > 0) {
- left = DIRBLKSIZ - blksiz;
- dp->d_reclen += left;
- uio_iov_base_add(uiop, left);
- uio_iov_len_add(uiop, -left);
- uiop->uio_offset += left;
- uio_uio_resid_add(uiop, -left);
- }
-
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_EXCLUSIVE)))
- error = lockerror;
- nfsmout_if(error);
-
- /*
- * We are now either at the end of the directory or have filled the
- * block.
- */
- if (bigenough)
- dnp->n_direofoffset = uiop->uio_offset;
- else {
- if (uio_uio_resid(uiop) > 0)
- printf("EEK! nfs4_readdir_rpc resid > 0\n");
- cookiep = nfs_getcookie(dnp, uiop->uio_offset, 1);
- if (cookiep)
- *cookiep = cookie;
- }
-
- nfs_unlock(dnp);
nfsmout:
+ if (bp_dropped && bp)
+ nfs_buf_release(bp, 0);
+ if (!lockerror)
+ nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
- return (error);
+ return (bp_dropped ? NFSERR_DIRBUFDROPPED : error);
}
int
vfs_context_t ctx,
struct nfsreq **reqp)
{
- int error = 0, isdotdot = 0, getattrs = 1, nfsvers, numops;
+ int error = 0, isdotdot = 0, nfsvers, numops;
struct nfsm_chain nmreq;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfsmount *nmp;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
- if ((name[0] == '.') && (name[1] == '.') && (namelen == 2))
+ if ((name[0] == '.') && (name[1] == '.') && (namelen == 2)) {
isdotdot = 1;
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
+ } else {
+ NFSREQ_SECINFO_SET(&si, dnp, dnp->n_fhp, dnp->n_fhsize, name, namelen);
+ }
nfsm_chain_null(&nmreq);
- // PUTFH, GETATTR, LOOKUP(P), GETATTR (FH)
- numops = getattrs ? 4 : 3;
+ // PUTFH, GETATTR, LOOKUP(P), GETFH, GETATTR (FH)
+ numops = 5;
nfsm_chain_build_alloc_init(error, &nmreq, 20 * NFSX_UNSIGNED + namelen);
- nfsm_chain_add_compound_header(error, &nmreq, "lookup", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "lookup", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
numops--;
if (isdotdot) {
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUPP);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
- nfsm_chain_add_string(error, &nmreq, name, namelen);
- }
- if (getattrs) {
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
- NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
- nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
}
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ /* some ".zfs" directories can't handle being asked for some attributes */
+ if ((dnp->n_flag & NISDOTZFS) && !isdotdot)
+ NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
+ if ((dnp->n_flag & NISDOTZFSCHILD) && isdotdot)
+ NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
+ if (((namelen == 4) && (name[0] == '.') && (name[1] == 'z') && (name[2] == 'f') && (name[3] == 's')))
+ NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, NULL);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
- vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, reqp);
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
+
int
nfs4_lookup_rpc_async_finish(
nfsnode_t dnp,
- __unused vfs_context_t ctx,
+ char *name,
+ int namelen,
+ vfs_context_t ctx,
struct nfsreq *req,
u_int64_t *xidp,
fhandle_t *fhp,
struct nfs_vattr *nvap)
{
- int error = 0, status, nfsvers, numops;
- uint32_t val = 0;
+ int error = 0, lockerror = ENOENT, status, nfsvers, numops, isdotdot = 0;
+ uint32_t op = NFS_OP_LOOKUP;
u_int64_t xid;
struct nfsmount *nmp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(dnp);
+ if (nmp == NULL)
+ return (ENXIO);
nfsvers = nmp->nm_vers;
+ if ((name[0] == '.') && (name[1] == '.') && (namelen == 2))
+ isdotdot = 1;
nfsm_chain_null(&nmrep);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock(dnp)))
+ error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
if (xidp)
*xidp = xid;
- nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, NULL, &xid);
-
- // nfsm_chain_op_check(error, &nmrep, (isdotdot ? NFS_OP_LOOKUPP : NFS_OP_LOOKUP));
- nfsm_chain_get_32(error, &nmrep, val);
- nfsm_assert(error, (val == NFS_OP_LOOKUPP) || (val == NFS_OP_LOOKUP), EBADRPC);
- nfsm_chain_get_32(error, &nmrep, val);
- nfsm_assert(error, (val == NFS_OK), val);
+ nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
+ nfsm_chain_op_check(error, &nmrep, (isdotdot ? NFS_OP_LOOKUPP : NFS_OP_LOOKUP));
nfsmout_if(error || !fhp || !nvap);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETFH);
+ nfsm_chain_get_32(error, &nmrep, fhp->fh_len);
+ nfsm_chain_get_opaque(error, &nmrep, fhp->fh_len, fhp->fh_data);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvap->nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, nvap, fhp, NULL);
- if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_FILEHANDLE)) {
- error = EBADRPC;
- goto nfsmout;
+ if ((error == NFSERR_MOVED) || (error == NFSERR_INVAL)) {
+ /* set this up to look like a referral trigger */
+ nfs4_default_attrs_for_referral_trigger(dnp, name, namelen, nvap, fhp);
+ error = 0;
+ } else {
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
}
nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmrep);
+ if (!error && (op == NFS_OP_LOOKUP) && (nmp->nm_state & NFSSTA_NEEDSECINFO)) {
+ /* We still need to get SECINFO to set default for mount. */
+ /* Do so for the first LOOKUP that returns successfully. */
+ struct nfs_sec sec;
+
+ sec.count = NX_MAX_SEC_FLAVORS;
+ error = nfs4_secinfo_rpc(nmp, &req->r_secinfo, vfs_context_ucred(ctx), sec.flavors, &sec.count);
+ /* [sigh] some implementations return "illegal" error for unsupported ops */
+ if (error == NFSERR_OP_ILLEGAL)
+ error = 0;
+ if (!error) {
+ /* set our default security flavor to the first in the list */
+ lck_mtx_lock(&nmp->nm_lock);
+ if (sec.count)
+ nmp->nm_auth = sec.flavors[0];
+ nmp->nm_state &= ~NFSSTA_NEEDSECINFO;
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ }
return (error);
}
int
nfs4_commit_rpc(
nfsnode_t np,
- u_int64_t offset,
- u_int64_t count,
- kauth_cred_t cred)
+ uint64_t offset,
+ uint64_t count,
+ kauth_cred_t cred,
+ uint64_t wverf)
{
struct nfsmount *nmp;
int error = 0, lockerror, status, nfsvers, numops;
- u_int64_t xid, wverf;
+ u_int64_t xid, newwverf;
uint32_t count32;
struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
FSDBG(521, np, offset, count, nmp ? nmp->nm_state : 0);
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
if (!(nmp->nm_state & NFSSTA_HASWRITEVERF))
return (0);
nfsvers = nmp->nm_vers;
else
count32 = count;
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
// PUTFH, COMMIT, GETATTR
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 19 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "commit", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "commit", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
nfsm_chain_add_32(error, &nmreq, count32);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
- current_thread(), cred, 0, &nmrep, &xid, &status);
+ current_thread(), cred, &si, 0, &nmrep, &xid, &status);
- if ((lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_COMMIT);
- nfsm_chain_get_64(error, &nmrep, wverf);
+ nfsm_chain_get_64(error, &nmrep, newwverf);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (!lockerror)
- nfs_unlock(np);
+ nfs_node_unlock(np);
nfsmout_if(error);
lck_mtx_lock(&nmp->nm_lock);
- if (nmp->nm_verf != wverf) {
- nmp->nm_verf = wverf;
+ if (nmp->nm_verf != newwverf)
+ nmp->nm_verf = newwverf;
+ if (wverf != newwverf)
error = NFSERR_STALEWRITEVERF;
- }
lck_mtx_unlock(&nmp->nm_lock);
nfsmout:
nfsm_chain_cleanup(&nmreq);
struct nfsmount *nmp = NFSTONMP(np);
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfs_vattr nvattr;
+ struct nfsreq_secinfo_args si;
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ NVATTR_INIT(&nvattr);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
/* NFSv4: fetch "pathconf" info for this node */
- numops = 2; // PUTFH + GETATTR
+ // PUTFH, GETATTR
+ numops = 2;
nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "pathconf", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "pathconf", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CHOWN_RESTRICTED);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CASE_INSENSITIVE);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CASE_PRESERVING);
- nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
- error = nfs4_parsefattr(&nmrep, nfsap, &nvattr, NULL, NULL);
+ error = nfs4_parsefattr(&nmrep, nfsap, &nvattr, NULL, NULL, NULL);
nfsmout_if(error);
- if ((lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if ((lockerror = nfs_node_lock(np)))
error = lockerror;
- nfs_loadattrcache(np, &nvattr, &xid, 0);
+ if (!error)
+ nfs_loadattrcache(np, &nvattr, &xid, 0);
if (!lockerror)
- nfs_unlock(np);
+ nfs_node_unlock(np);
nfsmout:
+ NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
} */ *ap)
{
struct vnode_attr *vap = ap->a_vap;
+ struct nfsmount *nmp;
struct nfs_vattr nva;
- int error;
+ int error, acls, ngaflags;
+
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ acls = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL);
- error = nfs_getattr(VTONFS(ap->a_vp), &nva, ap->a_context, 0);
+ ngaflags = NGA_CACHED;
+ if (VATTR_IS_ACTIVE(vap, va_acl) && acls)
+ ngaflags |= NGA_ACL;
+ error = nfs_getattr(VTONFS(ap->a_vp), &nva, ap->a_context, ngaflags);
if (error)
return (error);
/* copy what we have in nva to *a_vap */
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_RAWDEV)) {
+ if (VATTR_IS_ACTIVE(vap, va_rdev) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_RAWDEV)) {
dev_t rdev = makedev(nva.nva_rawdev.specdata1, nva.nva_rawdev.specdata2);
VATTR_RETURN(vap, va_rdev, rdev);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_NUMLINKS))
+ if (VATTR_IS_ACTIVE(vap, va_nlink) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_NUMLINKS))
VATTR_RETURN(vap, va_nlink, nva.nva_nlink);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SIZE))
+ if (VATTR_IS_ACTIVE(vap, va_data_size) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SIZE))
VATTR_RETURN(vap, va_data_size, nva.nva_size);
// VATTR_RETURN(vap, va_data_alloc, ???);
// VATTR_RETURN(vap, va_total_size, ???);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SPACE_USED))
+ if (VATTR_IS_ACTIVE(vap, va_total_alloc) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SPACE_USED))
VATTR_RETURN(vap, va_total_alloc, nva.nva_bytes);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER))
+ if (VATTR_IS_ACTIVE(vap, va_uid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER))
VATTR_RETURN(vap, va_uid, nva.nva_uid);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER_GROUP))
+ if (VATTR_IS_ACTIVE(vap, va_uuuid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER))
+ VATTR_RETURN(vap, va_uuuid, nva.nva_uuuid);
+ if (VATTR_IS_ACTIVE(vap, va_gid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER_GROUP))
VATTR_RETURN(vap, va_gid, nva.nva_gid);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_MODE))
- VATTR_RETURN(vap, va_mode, nva.nva_mode);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE) ||
- NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN)) {
+ if (VATTR_IS_ACTIVE(vap, va_guuid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER_GROUP))
+ VATTR_RETURN(vap, va_guuid, nva.nva_guuid);
+ if (VATTR_IS_ACTIVE(vap, va_mode)) {
+ if (NMFLAG(nmp, ACLONLY) || !NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_MODE))
+ VATTR_RETURN(vap, va_mode, 0777);
+ else
+ VATTR_RETURN(vap, va_mode, nva.nva_mode);
+ }
+ if (VATTR_IS_ACTIVE(vap, va_flags) &&
+ (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE) ||
+ NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN) ||
+ (nva.nva_flags & NFS_FFLAG_TRIGGER))) {
uint32_t flags = 0;
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE))
+ if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE) &&
+ (nva.nva_flags & NFS_FFLAG_ARCHIVED))
flags |= SF_ARCHIVED;
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN))
+ if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN) &&
+ (nva.nva_flags & NFS_FFLAG_HIDDEN))
flags |= UF_HIDDEN;
VATTR_RETURN(vap, va_flags, flags);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_CREATE)) {
+ if (VATTR_IS_ACTIVE(vap, va_create_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_CREATE)) {
vap->va_create_time.tv_sec = nva.nva_timesec[NFSTIME_CREATE];
vap->va_create_time.tv_nsec = nva.nva_timensec[NFSTIME_CREATE];
VATTR_SET_SUPPORTED(vap, va_create_time);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_ACCESS)) {
+ if (VATTR_IS_ACTIVE(vap, va_access_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_ACCESS)) {
vap->va_access_time.tv_sec = nva.nva_timesec[NFSTIME_ACCESS];
vap->va_access_time.tv_nsec = nva.nva_timensec[NFSTIME_ACCESS];
VATTR_SET_SUPPORTED(vap, va_access_time);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_MODIFY)) {
+ if (VATTR_IS_ACTIVE(vap, va_modify_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_MODIFY)) {
vap->va_modify_time.tv_sec = nva.nva_timesec[NFSTIME_MODIFY];
vap->va_modify_time.tv_nsec = nva.nva_timensec[NFSTIME_MODIFY];
VATTR_SET_SUPPORTED(vap, va_modify_time);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_METADATA)) {
+ if (VATTR_IS_ACTIVE(vap, va_change_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_METADATA)) {
vap->va_change_time.tv_sec = nva.nva_timesec[NFSTIME_CHANGE];
vap->va_change_time.tv_nsec = nva.nva_timensec[NFSTIME_CHANGE];
VATTR_SET_SUPPORTED(vap, va_change_time);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_BACKUP)) {
+ if (VATTR_IS_ACTIVE(vap, va_backup_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_BACKUP)) {
vap->va_backup_time.tv_sec = nva.nva_timesec[NFSTIME_BACKUP];
vap->va_backup_time.tv_nsec = nva.nva_timensec[NFSTIME_BACKUP];
VATTR_SET_SUPPORTED(vap, va_backup_time);
}
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_FILEID))
+ if (VATTR_IS_ACTIVE(vap, va_fileid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_FILEID))
VATTR_RETURN(vap, va_fileid, nva.nva_fileid);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TYPE))
+ if (VATTR_IS_ACTIVE(vap, va_type) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TYPE))
VATTR_RETURN(vap, va_type, nva.nva_type);
- if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_CHANGE))
+ if (VATTR_IS_ACTIVE(vap, va_filerev) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_CHANGE))
VATTR_RETURN(vap, va_filerev, nva.nva_change);
+ if (VATTR_IS_ACTIVE(vap, va_acl) && acls) {
+ VATTR_RETURN(vap, va_acl, nva.nva_acl);
+ nva.nva_acl = NULL;
+ }
+
// other attrs we might support someday:
// VATTR_RETURN(vap, va_encoding, ??? /* potentially unnormalized UTF-8? */);
- // struct kauth_acl *va_acl; /* access control list */
- // guid_t va_uuuid; /* file owner UUID */
- // guid_t va_guuid; /* file group UUID */
+ NVATTR_CLEANUP(&nva);
return (error);
}
nfs4_setattr_rpc(
nfsnode_t np,
struct vnode_attr *vap,
- vfs_context_t ctx,
- int alreadylocked)
+ vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(np);
- int error = 0, lockerror = ENOENT, status, nfsvers, numops;
- u_int64_t xid;
+ int error = 0, setattr_error = 0, lockerror = ENOENT, status, nfsvers, numops;
+ u_int64_t xid, nextxid;
struct nfsm_chain nmreq, nmrep;
- uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen, stateid;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
+ uint32_t getbitmap[NFS_ATTR_BITMAP_LEN];
+ uint32_t setbitmap[NFS_ATTR_BITMAP_LEN];
+ nfs_stateid stateid;
+ struct nfsreq_secinfo_args si;
- if (!nmp)
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
if (VATTR_IS_ACTIVE(vap, va_flags) && (vap->va_flags & ~(SF_ARCHIVED|UF_HIDDEN))) {
/* we don't support setting unsupported flags (duh!) */
return (ENOTSUP); /* return ENOTSUP for chflags(2) */
}
+ /* don't bother requesting some changes if they don't look like they are changing */
+ if (VATTR_IS_ACTIVE(vap, va_uid) && (vap->va_uid == np->n_vattr.nva_uid))
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ if (VATTR_IS_ACTIVE(vap, va_gid) && (vap->va_gid == np->n_vattr.nva_gid))
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+ if (VATTR_IS_ACTIVE(vap, va_uuuid) && kauth_guid_equal(&vap->va_uuuid, &np->n_vattr.nva_uuuid))
+ VATTR_CLEAR_ACTIVE(vap, va_uuuid);
+ if (VATTR_IS_ACTIVE(vap, va_guuid) && kauth_guid_equal(&vap->va_guuid, &np->n_vattr.nva_guuid))
+ VATTR_CLEAR_ACTIVE(vap, va_guuid);
+
+tryagain:
+ /* do nothing if no attributes will be sent */
+ nfs_vattr_set_bitmap(nmp, bitmap, vap);
+ if (!bitmap[0] && !bitmap[1])
+ return (0);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
+ /*
+ * Prepare GETATTR bitmap: if we are setting the ACL or mode, we
+ * need to invalidate any cached ACL. And if we had an ACL cached,
+ * we might as well also fetch the new value.
+ */
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, getbitmap);
+ if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACL) ||
+ NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MODE)) {
+ if (NACLVALID(np))
+ NFS_BITMAP_SET(getbitmap, NFS_FATTR_ACL);
+ NACLINVALIDATE(np);
+ }
+
// PUTFH, SETATTR, GETATTR
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 40 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "setattr", numops);
+ nfsm_chain_add_compound_header(error, &nmreq, "setattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SETATTR);
if (VATTR_IS_ACTIVE(vap, va_data_size))
- stateid = 0xffffffff; /* XXX use the special stateid for now */
+ nfs_get_stateid(np, vfs_context_thread(ctx), vfs_context_ucred(ctx), &stateid);
else
- stateid = 0;
- nfsm_chain_add_32(error, &nmreq, stateid);
- nfsm_chain_add_32(error, &nmreq, stateid);
- nfsm_chain_add_32(error, &nmreq, stateid);
- nfsm_chain_add_32(error, &nmreq, stateid);
+ stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
+ nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, getbitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
- if (!alreadylocked && ((lockerror = nfs_lock(np, NFS_NODE_LOCK_EXCLUSIVE))))
+ if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SETATTR);
+ nfsmout_if(error == EBADRPC);
+ setattr_error = error;
+ error = 0;
bmlen = NFS_ATTR_BITMAP_LEN;
- nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
- nfsmout_if(error);
- nfs_vattr_set_supported(bitmap, vap);
+ nfsm_chain_get_bitmap(error, &nmrep, setbitmap, bmlen);
+ if (!error) {
+ if (VATTR_IS_ACTIVE(vap, va_data_size) && (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ microuptime(&np->n_lastio);
+ nfs_vattr_set_supported(setbitmap, vap);
+ error = setattr_error;
+ }
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (error)
NATTRINVALIDATE(np);
+ /*
+ * We just changed the attributes and we want to make sure that we
+ * see the latest attributes. Get the next XID. If it's not the
+ * next XID after the SETATTR XID, then it's possible that another
+ * RPC was in flight at the same time and it might put stale attributes
+ * in the cache. In that case, we invalidate the attributes and set
+ * the attribute cache XID to guarantee that newer attributes will
+ * get loaded next.
+ */
+ nextxid = 0;
+ nfs_get_xid(&nextxid);
+ if (nextxid != (xid + 1)) {
+ np->n_xid = nextxid;
+ NATTRINVALIDATE(np);
+ }
nfsmout:
- if (!alreadylocked && !lockerror)
- nfs_unlock(np);
+ if (!lockerror)
+ nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
+ if ((setattr_error == EINVAL) && VATTR_IS_ACTIVE(vap, va_acl) && VATTR_IS_ACTIVE(vap, va_mode) && !NMFLAG(nmp, ACLONLY)) {
+ /*
+ * Some server's may not like ACL/mode combos that get sent.
+ * If it looks like that's what the server choked on, try setting
+ * just the ACL and not the mode (unless it looks like everything
+ * but mode was already successfully set).
+ */
+ if (((bitmap[0] & setbitmap[0]) != bitmap[0]) ||
+ ((bitmap[1] & (setbitmap[1]|NFS_FATTR_MODE)) != bitmap[1])) {
+ VATTR_CLEAR_ACTIVE(vap, va_mode);
+ error = 0;
+ goto tryagain;
+ }
+ }
return (error);
}
+/*
+ * Wait for any pending recovery to complete.
+ */
int
-nfs4_vnop_open(struct vnop_open_args *ap)
+nfs_mount_state_wait_for_recovery(struct nfsmount *nmp)
{
- return nfs3_vnop_open(ap);
+ struct timespec ts = { 1, 0 };
+ int error = 0, slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
+
+ lck_mtx_lock(&nmp->nm_lock);
+ while (nmp->nm_state & NFSSTA_RECOVER) {
+ if ((error = nfs_sigintr(nmp, NULL, current_thread(), 1)))
+ break;
+ nfs_mount_sock_thread_wake(nmp);
+ msleep(&nmp->nm_state, &nmp->nm_lock, slpflag|(PZERO-1), "nfsrecoverwait", &ts);
+ slpflag = 0;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ return (error);
}
+/*
+ * We're about to use/manipulate NFS mount's open/lock state.
+ * Wait for any pending state recovery to complete, then
+ * mark the state as being in use (which will hold off
+ * the recovery thread until we're done).
+ */
int
-nfs4_vnop_close(struct vnop_close_args *ap)
+nfs_mount_state_in_use_start(struct nfsmount *nmp, thread_t thd)
{
- return nfs3_vnop_close(ap);
+ struct timespec ts = { 1, 0 };
+ int error = 0, slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
+
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_state & (NFSSTA_FORCE|NFSSTA_DEAD)) {
+ lck_mtx_unlock(&nmp->nm_lock);
+ return (ENXIO);
+ }
+ while (nmp->nm_state & NFSSTA_RECOVER) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 1)))
+ break;
+ nfs_mount_sock_thread_wake(nmp);
+ msleep(&nmp->nm_state, &nmp->nm_lock, slpflag|(PZERO-1), "nfsrecoverwait", &ts);
+ slpflag = 0;
+ }
+ if (!error)
+ nmp->nm_stateinuse++;
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ return (error);
}
+/*
+ * We're done using/manipulating the NFS mount's open/lock
+ * state. If the given error indicates that recovery should
+ * be performed, we'll initiate recovery.
+ */
int
-nfs4_vnop_advlock(__unused struct vnop_advlock_args *ap)
+nfs_mount_state_in_use_end(struct nfsmount *nmp, int error)
{
- return (ENOSYS);
+ int restart = nfs_mount_state_error_should_restart(error);
+
+ if (nfs_mount_gone(nmp))
+ return (restart);
+ lck_mtx_lock(&nmp->nm_lock);
+ if (restart && (error != NFSERR_OLD_STATEID) && (error != NFSERR_GRACE)) {
+ printf("nfs_mount_state_in_use_end: error %d, initiating recovery for %s, 0x%x\n",
+ error, vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
+ nfs_need_recover(nmp, error);
+ }
+ if (nmp->nm_stateinuse > 0)
+ nmp->nm_stateinuse--;
+ else
+ panic("NFS mount state in use count underrun");
+ if (!nmp->nm_stateinuse && (nmp->nm_state & NFSSTA_RECOVER))
+ wakeup(&nmp->nm_stateinuse);
+ lck_mtx_unlock(&nmp->nm_lock);
+ if (error == NFSERR_GRACE)
+ tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
+
+ return (restart);
}
/*
- * Note: the NFSv4 CREATE RPC is for everything EXCEPT regular files.
- * Files are created using the NFSv4 OPEN RPC. So we must open the
- * file to create it and then close it immediately.
+ * Does the error mean we should restart/redo a state-related operation?
*/
int
-nfs4_vnop_create(
- struct vnop_create_args /* {
- struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
- vfs_context_t a_context;
- } */ *ap)
+nfs_mount_state_error_should_restart(int error)
{
- vfs_context_t ctx = ap->a_context;
- struct componentname *cnp = ap->a_cnp;
- struct vnode_attr *vap = ap->a_vap;
- vnode_t dvp = ap->a_dvp;
- vnode_t *vpp = ap->a_vpp;
- struct nfsmount *nmp;
- struct nfs_vattr nvattr, dnvattr;
- int error = 0, create_error = EIO, lockerror = ENOENT, status;
- int nfsvers, numops;
- u_int64_t xid, savedxid = 0;
- nfsnode_t dnp = VTONFS(dvp);
- nfsnode_t np = NULL;
+ switch (error) {
+ case NFSERR_STALE_STATEID:
+ case NFSERR_STALE_CLIENTID:
+ case NFSERR_ADMIN_REVOKED:
+ case NFSERR_EXPIRED:
+ case NFSERR_OLD_STATEID:
+ case NFSERR_BAD_STATEID:
+ case NFSERR_GRACE:
+ return (1);
+ }
+ return (0);
+}
+
+/*
+ * In some cases we may want to limit how many times we restart a
+ * state-related operation - e.g. we're repeatedly getting NFSERR_GRACE.
+ * Base the limit on the lease (as long as it's not too short).
+ */
+uint
+nfs_mount_state_max_restarts(struct nfsmount *nmp)
+{
+ return (MAX(nmp->nm_fsattr.nfsa_lease, 60));
+}
+
+/*
+ * Does the error mean we probably lost a delegation?
+ */
+int
+nfs_mount_state_error_delegation_lost(int error)
+{
+ switch (error) {
+ case NFSERR_STALE_STATEID:
+ case NFSERR_ADMIN_REVOKED:
+ case NFSERR_EXPIRED:
+ case NFSERR_OLD_STATEID:
+ case NFSERR_BAD_STATEID:
+ case NFSERR_GRACE: /* ugh! (stupid) RFC 3530 specifically disallows CLAIM_DELEGATE_CUR during grace period? */
+ return (1);
+ }
+ return (0);
+}
+
+
+/*
+ * Mark an NFS node's open state as busy.
+ */
+int
+nfs_open_state_set_busy(nfsnode_t np, thread_t thd)
+{
+ struct nfsmount *nmp;
+ struct timespec ts = {2, 0};
+ int error = 0, slpflag;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
+
+ lck_mtx_lock(&np->n_openlock);
+ while (np->n_openflags & N_OPENBUSY) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
+ break;
+ np->n_openflags |= N_OPENWANT;
+ msleep(&np->n_openflags, &np->n_openlock, slpflag, "nfs_open_state_set_busy", &ts);
+ slpflag = 0;
+ }
+ if (!error)
+ np->n_openflags |= N_OPENBUSY;
+ lck_mtx_unlock(&np->n_openlock);
+
+ return (error);
+}
+
+/*
+ * Clear an NFS node's open state busy flag and wake up
+ * anyone wanting it.
+ */
+void
+nfs_open_state_clear_busy(nfsnode_t np)
+{
+ int wanted;
+
+ lck_mtx_lock(&np->n_openlock);
+ if (!(np->n_openflags & N_OPENBUSY))
+ panic("nfs_open_state_clear_busy");
+ wanted = (np->n_openflags & N_OPENWANT);
+ np->n_openflags &= ~(N_OPENBUSY|N_OPENWANT);
+ lck_mtx_unlock(&np->n_openlock);
+ if (wanted)
+ wakeup(&np->n_openflags);
+}
+
+/*
+ * Search a mount's open owner list for the owner for this credential.
+ * If not found and "alloc" is set, then allocate a new one.
+ */
+struct nfs_open_owner *
+nfs_open_owner_find(struct nfsmount *nmp, kauth_cred_t cred, int alloc)
+{
+ uid_t uid = kauth_cred_getuid(cred);
+ struct nfs_open_owner *noop, *newnoop = NULL;
+
+tryagain:
+ lck_mtx_lock(&nmp->nm_lock);
+ TAILQ_FOREACH(noop, &nmp->nm_open_owners, noo_link) {
+ if (kauth_cred_getuid(noop->noo_cred) == uid)
+ break;
+ }
+
+ if (!noop && !newnoop && alloc) {
+ lck_mtx_unlock(&nmp->nm_lock);
+ MALLOC(newnoop, struct nfs_open_owner *, sizeof(struct nfs_open_owner), M_TEMP, M_WAITOK);
+ if (!newnoop)
+ return (NULL);
+ bzero(newnoop, sizeof(*newnoop));
+ lck_mtx_init(&newnoop->noo_lock, nfs_open_grp, LCK_ATTR_NULL);
+ newnoop->noo_mount = nmp;
+ kauth_cred_ref(cred);
+ newnoop->noo_cred = cred;
+ newnoop->noo_name = OSAddAtomic(1, &nfs_open_owner_seqnum);
+ TAILQ_INIT(&newnoop->noo_opens);
+ goto tryagain;
+ }
+ if (!noop && newnoop) {
+ newnoop->noo_flags |= NFS_OPEN_OWNER_LINK;
+ TAILQ_INSERT_HEAD(&nmp->nm_open_owners, newnoop, noo_link);
+ noop = newnoop;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ if (newnoop && (noop != newnoop))
+ nfs_open_owner_destroy(newnoop);
+
+ if (noop)
+ nfs_open_owner_ref(noop);
+
+ return (noop);
+}
+
+/*
+ * destroy an open owner that's no longer needed
+ */
+void
+nfs_open_owner_destroy(struct nfs_open_owner *noop)
+{
+ if (noop->noo_cred)
+ kauth_cred_unref(&noop->noo_cred);
+ lck_mtx_destroy(&noop->noo_lock, nfs_open_grp);
+ FREE(noop, M_TEMP);
+}
+
+/*
+ * acquire a reference count on an open owner
+ */
+void
+nfs_open_owner_ref(struct nfs_open_owner *noop)
+{
+ lck_mtx_lock(&noop->noo_lock);
+ noop->noo_refcnt++;
+ lck_mtx_unlock(&noop->noo_lock);
+}
+
+/*
+ * drop a reference count on an open owner and destroy it if
+ * it is no longer referenced and no longer on the mount's list.
+ */
+void
+nfs_open_owner_rele(struct nfs_open_owner *noop)
+{
+ lck_mtx_lock(&noop->noo_lock);
+ if (noop->noo_refcnt < 1)
+ panic("nfs_open_owner_rele: no refcnt");
+ noop->noo_refcnt--;
+ if (!noop->noo_refcnt && (noop->noo_flags & NFS_OPEN_OWNER_BUSY))
+ panic("nfs_open_owner_rele: busy");
+ /* XXX we may potentially want to clean up idle/unused open owner structures */
+ if (noop->noo_refcnt || (noop->noo_flags & NFS_OPEN_OWNER_LINK)) {
+ lck_mtx_unlock(&noop->noo_lock);
+ return;
+ }
+ /* owner is no longer referenced or linked to mount, so destroy it */
+ lck_mtx_unlock(&noop->noo_lock);
+ nfs_open_owner_destroy(noop);
+}
+
+/*
+ * Mark an open owner as busy because we are about to
+ * start an operation that uses and updates open owner state.
+ */
+int
+nfs_open_owner_set_busy(struct nfs_open_owner *noop, thread_t thd)
+{
+ struct nfsmount *nmp;
+ struct timespec ts = {2, 0};
+ int error = 0, slpflag;
+
+ nmp = noop->noo_mount;
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
+
+ lck_mtx_lock(&noop->noo_lock);
+ while (noop->noo_flags & NFS_OPEN_OWNER_BUSY) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
+ break;
+ noop->noo_flags |= NFS_OPEN_OWNER_WANT;
+ msleep(noop, &noop->noo_lock, slpflag, "nfs_open_owner_set_busy", &ts);
+ slpflag = 0;
+ }
+ if (!error)
+ noop->noo_flags |= NFS_OPEN_OWNER_BUSY;
+ lck_mtx_unlock(&noop->noo_lock);
+
+ return (error);
+}
+
+/*
+ * Clear the busy flag on an open owner and wake up anyone waiting
+ * to mark it busy.
+ */
+void
+nfs_open_owner_clear_busy(struct nfs_open_owner *noop)
+{
+ int wanted;
+
+ lck_mtx_lock(&noop->noo_lock);
+ if (!(noop->noo_flags & NFS_OPEN_OWNER_BUSY))
+ panic("nfs_open_owner_clear_busy");
+ wanted = (noop->noo_flags & NFS_OPEN_OWNER_WANT);
+ noop->noo_flags &= ~(NFS_OPEN_OWNER_BUSY|NFS_OPEN_OWNER_WANT);
+ lck_mtx_unlock(&noop->noo_lock);
+ if (wanted)
+ wakeup(noop);
+}
+
+/*
+ * Given an open/lock owner and an error code, increment the
+ * sequence ID if appropriate.
+ */
+void
+nfs_owner_seqid_increment(struct nfs_open_owner *noop, struct nfs_lock_owner *nlop, int error)
+{
+ switch (error) {
+ case NFSERR_STALE_CLIENTID:
+ case NFSERR_STALE_STATEID:
+ case NFSERR_OLD_STATEID:
+ case NFSERR_BAD_STATEID:
+ case NFSERR_BAD_SEQID:
+ case NFSERR_BADXDR:
+ case NFSERR_RESOURCE:
+ case NFSERR_NOFILEHANDLE:
+ /* do not increment the open seqid on these errors */
+ return;
+ }
+ if (noop)
+ noop->noo_seqid++;
+ if (nlop)
+ nlop->nlo_seqid++;
+}
+
+/*
+ * Search a node's open file list for any conflicts with this request.
+ * Also find this open owner's open file structure.
+ * If not found and "alloc" is set, then allocate one.
+ */
+int
+nfs_open_file_find(
+ nfsnode_t np,
+ struct nfs_open_owner *noop,
+ struct nfs_open_file **nofpp,
+ uint32_t accessMode,
+ uint32_t denyMode,
+ int alloc)
+{
+ *nofpp = NULL;
+ return nfs_open_file_find_internal(np, noop, nofpp, accessMode, denyMode, alloc);
+}
+
+/*
+ * Internally, allow using a provisional nodeless nofp (passed in via *nofpp)
+ * if an existing one is not found. This is used in "create" scenarios to
+ * officially add the provisional nofp to the node once the node is created.
+ */
+int
+nfs_open_file_find_internal(
+ nfsnode_t np,
+ struct nfs_open_owner *noop,
+ struct nfs_open_file **nofpp,
+ uint32_t accessMode,
+ uint32_t denyMode,
+ int alloc)
+{
+ struct nfs_open_file *nofp = NULL, *nofp2, *newnofp = NULL;
+
+ if (!np)
+ goto alloc;
+tryagain:
+ lck_mtx_lock(&np->n_openlock);
+ TAILQ_FOREACH(nofp2, &np->n_opens, nof_link) {
+ if (nofp2->nof_owner == noop) {
+ nofp = nofp2;
+ if (!accessMode)
+ break;
+ }
+ if ((accessMode & nofp2->nof_deny) || (denyMode & nofp2->nof_access)) {
+ /* This request conflicts with an existing open on this client. */
+ lck_mtx_unlock(&np->n_openlock);
+ return (EACCES);
+ }
+ }
+
+ /*
+ * If this open owner doesn't have an open
+ * file structure yet, we create one for it.
+ */
+ if (!nofp && !*nofpp && !newnofp && alloc) {
+ lck_mtx_unlock(&np->n_openlock);
+alloc:
+ MALLOC(newnofp, struct nfs_open_file *, sizeof(struct nfs_open_file), M_TEMP, M_WAITOK);
+ if (!newnofp)
+ return (ENOMEM);
+ bzero(newnofp, sizeof(*newnofp));
+ lck_mtx_init(&newnofp->nof_lock, nfs_open_grp, LCK_ATTR_NULL);
+ newnofp->nof_owner = noop;
+ nfs_open_owner_ref(noop);
+ newnofp->nof_np = np;
+ lck_mtx_lock(&noop->noo_lock);
+ TAILQ_INSERT_HEAD(&noop->noo_opens, newnofp, nof_oolink);
+ lck_mtx_unlock(&noop->noo_lock);
+ if (np)
+ goto tryagain;
+ }
+ if (!nofp) {
+ if (*nofpp) {
+ (*nofpp)->nof_np = np;
+ nofp = *nofpp;
+ } else {
+ nofp = newnofp;
+ }
+ if (nofp && np)
+ TAILQ_INSERT_HEAD(&np->n_opens, nofp, nof_link);
+ }
+ if (np)
+ lck_mtx_unlock(&np->n_openlock);
+
+ if (alloc && newnofp && (nofp != newnofp))
+ nfs_open_file_destroy(newnofp);
+
+ *nofpp = nofp;
+ return (nofp ? 0 : ESRCH);
+}
+
+/*
+ * Destroy an open file structure.
+ */
+void
+nfs_open_file_destroy(struct nfs_open_file *nofp)
+{
+ lck_mtx_lock(&nofp->nof_owner->noo_lock);
+ TAILQ_REMOVE(&nofp->nof_owner->noo_opens, nofp, nof_oolink);
+ lck_mtx_unlock(&nofp->nof_owner->noo_lock);
+ nfs_open_owner_rele(nofp->nof_owner);
+ lck_mtx_destroy(&nofp->nof_lock, nfs_open_grp);
+ FREE(nofp, M_TEMP);
+}
+
+/*
+ * Mark an open file as busy because we are about to
+ * start an operation that uses and updates open file state.
+ */
+int
+nfs_open_file_set_busy(struct nfs_open_file *nofp, thread_t thd)
+{
+ struct nfsmount *nmp;
+ struct timespec ts = {2, 0};
+ int error = 0, slpflag;
+
+ nmp = nofp->nof_owner->noo_mount;
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
+
+ lck_mtx_lock(&nofp->nof_lock);
+ while (nofp->nof_flags & NFS_OPEN_FILE_BUSY) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
+ break;
+ nofp->nof_flags |= NFS_OPEN_FILE_WANT;
+ msleep(nofp, &nofp->nof_lock, slpflag, "nfs_open_file_set_busy", &ts);
+ slpflag = 0;
+ }
+ if (!error)
+ nofp->nof_flags |= NFS_OPEN_FILE_BUSY;
+ lck_mtx_unlock(&nofp->nof_lock);
+
+ return (error);
+}
+
+/*
+ * Clear the busy flag on an open file and wake up anyone waiting
+ * to mark it busy.
+ */
+void
+nfs_open_file_clear_busy(struct nfs_open_file *nofp)
+{
+ int wanted;
+
+ lck_mtx_lock(&nofp->nof_lock);
+ if (!(nofp->nof_flags & NFS_OPEN_FILE_BUSY))
+ panic("nfs_open_file_clear_busy");
+ wanted = (nofp->nof_flags & NFS_OPEN_FILE_WANT);
+ nofp->nof_flags &= ~(NFS_OPEN_FILE_BUSY|NFS_OPEN_FILE_WANT);
+ lck_mtx_unlock(&nofp->nof_lock);
+ if (wanted)
+ wakeup(nofp);
+}
+
+/*
+ * Add the open state for the given access/deny modes to this open file.
+ */
+void
+nfs_open_file_add_open(struct nfs_open_file *nofp, uint32_t accessMode, uint32_t denyMode, int delegated)
+{
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_access |= accessMode;
+ nofp->nof_deny |= denyMode;
+
+ if (delegated) {
+ if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_d_r++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_d_w++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_d_rw++;
+ } else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_d_r_dw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_d_w_dw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_d_rw_dw++;
+ } else { /* NFS_OPEN_SHARE_DENY_BOTH */
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_d_r_drw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_d_w_drw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_d_rw_drw++;
+ }
+ } else {
+ if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_r++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_w++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_rw++;
+ } else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_r_dw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_w_dw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_rw_dw++;
+ } else { /* NFS_OPEN_SHARE_DENY_BOTH */
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ nofp->nof_r_drw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ nofp->nof_w_drw++;
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ nofp->nof_rw_drw++;
+ }
+ }
+
+ nofp->nof_opencnt++;
+ lck_mtx_unlock(&nofp->nof_lock);
+}
+
+/*
+ * Find which particular open combo will be closed and report what
+ * the new modes will be and whether the open was delegated.
+ */
+void
+nfs_open_file_remove_open_find(
+ struct nfs_open_file *nofp,
+ uint32_t accessMode,
+ uint32_t denyMode,
+ uint32_t *newAccessMode,
+ uint32_t *newDenyMode,
+ int *delegated)
+{
+ /*
+ * Calculate new modes: a mode bit gets removed when there's only
+ * one count in all the corresponding counts
+ */
+ *newAccessMode = nofp->nof_access;
+ *newDenyMode = nofp->nof_deny;
+
+ if ((accessMode & NFS_OPEN_SHARE_ACCESS_READ) &&
+ (nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ) &&
+ ((nofp->nof_r + nofp->nof_d_r +
+ nofp->nof_rw + nofp->nof_d_rw +
+ nofp->nof_r_dw + nofp->nof_d_r_dw +
+ nofp->nof_rw_dw + nofp->nof_d_rw_dw +
+ nofp->nof_r_drw + nofp->nof_d_r_drw +
+ nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
+ *newAccessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
+ if ((accessMode & NFS_OPEN_SHARE_ACCESS_WRITE) &&
+ (nofp->nof_access & NFS_OPEN_SHARE_ACCESS_WRITE) &&
+ ((nofp->nof_w + nofp->nof_d_w +
+ nofp->nof_rw + nofp->nof_d_rw +
+ nofp->nof_w_dw + nofp->nof_d_w_dw +
+ nofp->nof_rw_dw + nofp->nof_d_rw_dw +
+ nofp->nof_w_drw + nofp->nof_d_w_drw +
+ nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
+ *newAccessMode &= ~NFS_OPEN_SHARE_ACCESS_WRITE;
+ if ((denyMode & NFS_OPEN_SHARE_DENY_READ) &&
+ (nofp->nof_deny & NFS_OPEN_SHARE_DENY_READ) &&
+ ((nofp->nof_r_drw + nofp->nof_d_r_drw +
+ nofp->nof_w_drw + nofp->nof_d_w_drw +
+ nofp->nof_rw_drw + nofp->nof_d_rw_drw) == 1))
+ *newDenyMode &= ~NFS_OPEN_SHARE_DENY_READ;
+ if ((denyMode & NFS_OPEN_SHARE_DENY_WRITE) &&
+ (nofp->nof_deny & NFS_OPEN_SHARE_DENY_WRITE) &&
+ ((nofp->nof_r_drw + nofp->nof_d_r_drw +
+ nofp->nof_w_drw + nofp->nof_d_w_drw +
+ nofp->nof_rw_drw + nofp->nof_d_rw_drw +
+ nofp->nof_r_dw + nofp->nof_d_r_dw +
+ nofp->nof_w_dw + nofp->nof_d_w_dw +
+ nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
+ *newDenyMode &= ~NFS_OPEN_SHARE_DENY_WRITE;
+
+ /* Find the corresponding open access/deny mode counter. */
+ if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ *delegated = (nofp->nof_d_r != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ *delegated = (nofp->nof_d_w != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ *delegated = (nofp->nof_d_rw != 0);
+ else
+ *delegated = 0;
+ } else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ *delegated = (nofp->nof_d_r_dw != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ *delegated = (nofp->nof_d_w_dw != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ *delegated = (nofp->nof_d_rw_dw != 0);
+ else
+ *delegated = 0;
+ } else { /* NFS_OPEN_SHARE_DENY_BOTH */
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
+ *delegated = (nofp->nof_d_r_drw != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
+ *delegated = (nofp->nof_d_w_drw != 0);
+ else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
+ *delegated = (nofp->nof_d_rw_drw != 0);
+ else
+ *delegated = 0;
+ }
+}
+
+/*
+ * Remove the open state for the given access/deny modes to this open file.
+ */
+void
+nfs_open_file_remove_open(struct nfs_open_file *nofp, uint32_t accessMode, uint32_t denyMode)
+{
+ uint32_t newAccessMode, newDenyMode;
+ int delegated = 0;
+
+ lck_mtx_lock(&nofp->nof_lock);
+ nfs_open_file_remove_open_find(nofp, accessMode, denyMode, &newAccessMode, &newDenyMode, &delegated);
+
+ /* Decrement the corresponding open access/deny mode counter. */
+ if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
+ if (delegated) {
+ if (nofp->nof_d_r == 0)
+ NP(nofp->nof_np, "nfs: open(R) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_r--;
+ } else {
+ if (nofp->nof_r == 0)
+ NP(nofp->nof_np, "nfs: open(R) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_r--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
+ if (delegated) {
+ if (nofp->nof_d_w == 0)
+ NP(nofp->nof_np, "nfs: open(W) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_w--;
+ } else {
+ if (nofp->nof_w == 0)
+ NP(nofp->nof_np, "nfs: open(W) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_w--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
+ if (delegated) {
+ if (nofp->nof_d_rw == 0)
+ NP(nofp->nof_np, "nfs: open(RW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_rw--;
+ } else {
+ if (nofp->nof_rw == 0)
+ NP(nofp->nof_np, "nfs: open(RW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_rw--;
+ }
+ }
+ } else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
+ if (delegated) {
+ if (nofp->nof_d_r_dw == 0)
+ NP(nofp->nof_np, "nfs: open(R,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_r_dw--;
+ } else {
+ if (nofp->nof_r_dw == 0)
+ NP(nofp->nof_np, "nfs: open(R,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_r_dw--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
+ if (delegated) {
+ if (nofp->nof_d_w_dw == 0)
+ NP(nofp->nof_np, "nfs: open(W,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_w_dw--;
+ } else {
+ if (nofp->nof_w_dw == 0)
+ NP(nofp->nof_np, "nfs: open(W,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_w_dw--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
+ if (delegated) {
+ if (nofp->nof_d_rw_dw == 0)
+ NP(nofp->nof_np, "nfs: open(RW,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_rw_dw--;
+ } else {
+ if (nofp->nof_rw_dw == 0)
+ NP(nofp->nof_np, "nfs: open(RW,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_rw_dw--;
+ }
+ }
+ } else { /* NFS_OPEN_SHARE_DENY_BOTH */
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
+ if (delegated) {
+ if (nofp->nof_d_r_drw == 0)
+ NP(nofp->nof_np, "nfs: open(R,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_r_drw--;
+ } else {
+ if (nofp->nof_r_drw == 0)
+ NP(nofp->nof_np, "nfs: open(R,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_r_drw--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
+ if (delegated) {
+ if (nofp->nof_d_w_drw == 0)
+ NP(nofp->nof_np, "nfs: open(W,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_w_drw--;
+ } else {
+ if (nofp->nof_w_drw == 0)
+ NP(nofp->nof_np, "nfs: open(W,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_w_drw--;
+ }
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
+ if (delegated) {
+ if (nofp->nof_d_rw_drw == 0)
+ NP(nofp->nof_np, "nfs: open(RW,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_d_rw_drw--;
+ } else {
+ if (nofp->nof_rw_drw == 0)
+ NP(nofp->nof_np, "nfs: open(RW,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ else
+ nofp->nof_rw_drw--;
+ }
+ }
+ }
+
+ /* update the modes */
+ nofp->nof_access = newAccessMode;
+ nofp->nof_deny = newDenyMode;
+ nofp->nof_opencnt--;
+ lck_mtx_unlock(&nofp->nof_lock);
+}
+
+
+/*
+ * Get the current (delegation, lock, open, default) stateid for this node.
+ * If node has a delegation, use that stateid.
+ * If pid has a lock, use the lockowner's stateid.
+ * Or use the open file's stateid.
+ * If no open file, use a default stateid of all ones.
+ */
+void
+nfs_get_stateid(nfsnode_t np, thread_t thd, kauth_cred_t cred, nfs_stateid *sid)
+{
+ struct nfsmount *nmp = NFSTONMP(np);
+ proc_t p = thd ? get_bsdthreadtask_info(thd) : current_proc(); // XXX async I/O requests don't have a thread
+ struct nfs_open_owner *noop = NULL;
+ struct nfs_open_file *nofp = NULL;
+ struct nfs_lock_owner *nlop = NULL;
+ nfs_stateid *s = NULL;
+
+ if (np->n_openflags & N_DELEG_MASK) {
+ s = &np->n_dstateid;
+ } else {
+ if (p)
+ nlop = nfs_lock_owner_find(np, p, 0);
+ if (nlop && !TAILQ_EMPTY(&nlop->nlo_locks)) {
+ /* we hold locks, use lock stateid */
+ s = &nlop->nlo_stateid;
+ } else if (((noop = nfs_open_owner_find(nmp, cred, 0))) &&
+ (nfs_open_file_find(np, noop, &nofp, 0, 0, 0) == 0) &&
+ !(nofp->nof_flags & NFS_OPEN_FILE_LOST) &&
+ nofp->nof_access) {
+ /* we (should) have the file open, use open stateid */
+ if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)
+ nfs4_reopen(nofp, thd);
+ if (!(nofp->nof_flags & NFS_OPEN_FILE_LOST))
+ s = &nofp->nof_stateid;
+ }
+ }
+
+ if (s) {
+ sid->seqid = s->seqid;
+ sid->other[0] = s->other[0];
+ sid->other[1] = s->other[1];
+ sid->other[2] = s->other[2];
+ } else {
+ /* named attributes may not have a stateid for reads, so don't complain for them */
+ if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ NP(np, "nfs_get_stateid: no stateid");
+ sid->seqid = sid->other[0] = sid->other[1] = sid->other[2] = 0xffffffff;
+ }
+ if (nlop)
+ nfs_lock_owner_rele(nlop);
+ if (noop)
+ nfs_open_owner_rele(noop);
+}
+
+
+/*
+ * When we have a delegation, we may be able to perform the OPEN locally.
+ * Perform the OPEN by checking the delegation ACE and/or checking via ACCESS.
+ */
+int
+nfs4_open_delegated(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ uint32_t accessMode,
+ uint32_t denyMode,
+ vfs_context_t ctx)
+{
+ int error = 0, ismember, readtoo = 0, authorized = 0;
+ uint32_t action;
+ struct kauth_acl_eval eval;
+ kauth_cred_t cred = vfs_context_ucred(ctx);
+
+ if (!(accessMode & NFS_OPEN_SHARE_ACCESS_READ)) {
+ /*
+ * Try to open it for read access too,
+ * so the buffer cache can read data.
+ */
+ readtoo = 1;
+ accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
+ }
+
+tryagain:
+ action = 0;
+ if (accessMode & NFS_OPEN_SHARE_ACCESS_READ)
+ action |= KAUTH_VNODE_READ_DATA;
+ if (accessMode & NFS_OPEN_SHARE_ACCESS_WRITE)
+ action |= KAUTH_VNODE_WRITE_DATA;
+
+ /* evaluate ACE (if we have one) */
+ if (np->n_dace.ace_flags) {
+ eval.ae_requested = action;
+ eval.ae_acl = &np->n_dace;
+ eval.ae_count = 1;
+ eval.ae_options = 0;
+ if (np->n_vattr.nva_uid == kauth_cred_getuid(cred))
+ eval.ae_options |= KAUTH_AEVAL_IS_OWNER;
+ error = kauth_cred_ismember_gid(cred, np->n_vattr.nva_gid, &ismember);
+ if (!error && ismember)
+ eval.ae_options |= KAUTH_AEVAL_IN_GROUP;
+
+ eval.ae_exp_gall = KAUTH_VNODE_GENERIC_ALL_BITS;
+ eval.ae_exp_gread = KAUTH_VNODE_GENERIC_READ_BITS;
+ eval.ae_exp_gwrite = KAUTH_VNODE_GENERIC_WRITE_BITS;
+ eval.ae_exp_gexec = KAUTH_VNODE_GENERIC_EXECUTE_BITS;
+
+ error = kauth_acl_evaluate(cred, &eval);
+
+ if (!error && (eval.ae_result == KAUTH_RESULT_ALLOW))
+ authorized = 1;
+ }
+
+ if (!authorized) {
+ /* need to ask the server via ACCESS */
+ struct vnop_access_args naa;
+ naa.a_desc = &vnop_access_desc;
+ naa.a_vp = NFSTOV(np);
+ naa.a_action = action;
+ naa.a_context = ctx;
+ if (!(error = nfs_vnop_access(&naa)))
+ authorized = 1;
+ }
+
+ if (!authorized) {
+ if (readtoo) {
+ /* try again without the extra read access */
+ accessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
+ readtoo = 0;
+ goto tryagain;
+ }
+ return (error ? error : EACCES);
+ }
+
+ nfs_open_file_add_open(nofp, accessMode, denyMode, 1);
+
+ return (0);
+}
+
+
+/*
+ * Open a file with the given access/deny modes.
+ *
+ * If we have a delegation, we may be able to handle the open locally.
+ * Otherwise, we will always send the open RPC even if this open's mode is
+ * a subset of all the existing opens. This makes sure that we will always
+ * be able to do a downgrade to any of the open modes.
+ *
+ * Note: local conflicts should have already been checked in nfs_open_file_find().
+ */
+int
+nfs4_open(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ uint32_t accessMode,
+ uint32_t denyMode,
+ vfs_context_t ctx)
+{
+ vnode_t vp = NFSTOV(np);
+ vnode_t dvp = NULL;
+ struct componentname cn;
+ const char *vname = NULL;
+ size_t namelen;
+ char smallname[128];
+ char *filename = NULL;
+ int error = 0, readtoo = 0;
+
+ /*
+ * We can handle the OPEN ourselves if we have a delegation,
+ * unless it's a read delegation and the open is asking for
+ * either write access or deny read. We also don't bother to
+ * use the delegation if it's being returned.
+ */
+ if (np->n_openflags & N_DELEG_MASK) {
+ if ((error = nfs_open_state_set_busy(np, vfs_context_thread(ctx))))
+ return (error);
+ if ((np->n_openflags & N_DELEG_MASK) && !(np->n_openflags & N_DELEG_RETURN) &&
+ (((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) ||
+ (!(accessMode & NFS_OPEN_SHARE_ACCESS_WRITE) && !(denyMode & NFS_OPEN_SHARE_DENY_READ)))) {
+ error = nfs4_open_delegated(np, nofp, accessMode, denyMode, ctx);
+ nfs_open_state_clear_busy(np);
+ return (error);
+ }
+ nfs_open_state_clear_busy(np);
+ }
+
+ /*
+ * [sigh] We can't trust VFS to get the parent right for named
+ * attribute nodes. (It likes to reparent the nodes after we've
+ * created them.) Luckily we can probably get the right parent
+ * from the n_parent we have stashed away.
+ */
+ if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
+ (((dvp = np->n_parent)) && (error = vnode_get(dvp))))
+ dvp = NULL;
+ if (!dvp)
+ dvp = vnode_getparent(vp);
+ vname = vnode_getname(vp);
+ if (!dvp || !vname) {
+ if (!error)
+ error = EIO;
+ goto out;
+ }
+ filename = &smallname[0];
+ namelen = snprintf(filename, sizeof(smallname), "%s", vname);
+ if (namelen >= sizeof(smallname)) {
+ MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
+ if (!filename) {
+ error = ENOMEM;
+ goto out;
+ }
+ snprintf(filename, namelen+1, "%s", vname);
+ }
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = filename;
+ cn.cn_namelen = namelen;
+
+ if (!(accessMode & NFS_OPEN_SHARE_ACCESS_READ)) {
+ /*
+ * Try to open it for read access too,
+ * so the buffer cache can read data.
+ */
+ readtoo = 1;
+ accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
+ }
+tryagain:
+ error = nfs4_open_rpc(nofp, ctx, &cn, NULL, dvp, &vp, NFS_OPEN_NOCREATE, accessMode, denyMode);
+ if (error) {
+ if (!nfs_mount_state_error_should_restart(error) &&
+ (error != EINTR) && (error != ERESTART) && readtoo) {
+ /* try again without the extra read access */
+ accessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
+ readtoo = 0;
+ goto tryagain;
+ }
+ goto out;
+ }
+ nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
+out:
+ if (filename && (filename != &smallname[0]))
+ FREE(filename, M_TEMP);
+ if (vname)
+ vnode_putname(vname);
+ if (dvp != NULLVP)
+ vnode_put(dvp);
+ return (error);
+}
+
+int
+nfs_vnop_mmap(
+ struct vnop_mmap_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ int a_fflags;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ vnode_t vp = ap->a_vp;
+ nfsnode_t np = VTONFS(vp);
+ int error = 0, accessMode, denyMode, delegated;
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop = NULL;
+ struct nfs_open_file *nofp = NULL;
+
+ nmp = VTONMP(vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ if (!vnode_isreg(vp) || !(ap->a_fflags & (PROT_READ|PROT_WRITE)))
+ return (EINVAL);
+ if (np->n_flag & NREVOKE)
+ return (EIO);
+
+ /*
+ * fflags contains some combination of: PROT_READ, PROT_WRITE
+ * Since it's not possible to mmap() without having the file open for reading,
+ * read access is always there (regardless if PROT_READ is not set).
+ */
+ accessMode = NFS_OPEN_SHARE_ACCESS_READ;
+ if (ap->a_fflags & PROT_WRITE)
+ accessMode |= NFS_OPEN_SHARE_ACCESS_WRITE;
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+
+ noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
+ if (!noop)
+ return (ENOMEM);
+
+restart:
+ error = nfs_mount_state_in_use_start(nmp, NULL);
+ if (error) {
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+ if (np->n_flag & NREVOKE) {
+ error = EIO;
+ nfs_mount_state_in_use_end(nmp, 0);
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+
+ error = nfs_open_file_find(np, noop, &nofp, 0, 0, 1);
+ if (error || (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST))) {
+ NP(np, "nfs_vnop_mmap: no open file for owner, error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
+ error = EPERM;
+ }
+ if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ error = nfs4_reopen(nofp, NULL);
+ nofp = NULL;
+ if (!error)
+ goto restart;
+ }
+ if (!error)
+ error = nfs_open_file_set_busy(nofp, NULL);
+ if (error) {
+ nofp = NULL;
+ goto out;
+ }
+
+ /*
+ * The open reference for mmap must mirror an existing open because
+ * we may need to reclaim it after the file is closed.
+ * So grab another open count matching the accessMode passed in.
+ * If we already had an mmap open, prefer read/write without deny mode.
+ * This means we may have to drop the current mmap open first.
+ *
+ * N.B. We should have an open for the mmap, because, mmap was
+ * called on an open descriptor, or we've created an open for read
+ * from reading the first page for execve. However, if we piggy
+ * backed on an existing NFS_OPEN_SHARE_ACCESS_READ/NFS_OPEN_SHARE_DENY_NONE
+ * that open may have closed.
+ */
+
+ if (!(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ)) {
+ if (nofp->nof_flags & NFS_OPEN_FILE_NEEDCLOSE) {
+ /* We shouldn't get here. We've already open the file for execve */
+ NP(np, "nfs_vnop_mmap: File already needs close access: 0x%x, cred: %d thread: %lld",
+ nofp->nof_access, kauth_cred_getuid(nofp->nof_owner->noo_cred), thread_tid(vfs_context_thread(ctx)));
+ }
+ /*
+ * mmapings for execve are just for read. Get out with EPERM if the accessMode is not ACCESS_READ
+ * or the access would be denied. Other accesses should have an open descriptor for the mapping.
+ */
+ if (accessMode != NFS_OPEN_SHARE_ACCESS_READ || (accessMode & nofp->nof_deny)) {
+ /* not asking for just read access -> fail */
+ error = EPERM;
+ goto out;
+ }
+ /* we don't have the file open, so open it for read access */
+ if (nmp->nm_vers < NFS_VER4) {
+ /* NFS v2/v3 opens are always allowed - so just add it. */
+ nfs_open_file_add_open(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, 0);
+ error = 0;
+ } else {
+ error = nfs4_open(np, nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, ctx);
+ }
+ if (!error)
+ nofp->nof_flags |= NFS_OPEN_FILE_NEEDCLOSE;
+ if (error)
+ goto out;
+ }
+
+ /* determine deny mode for open */
+ if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
+ if (nofp->nof_d_rw || nofp->nof_d_rw_dw || nofp->nof_d_rw_drw) {
+ delegated = 1;
+ if (nofp->nof_d_rw)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_d_rw_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_d_rw_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else if (nofp->nof_rw || nofp->nof_rw_dw || nofp->nof_rw_drw) {
+ delegated = 0;
+ if (nofp->nof_rw)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_rw_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_rw_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else {
+ error = EPERM;
+ }
+ } else { /* NFS_OPEN_SHARE_ACCESS_READ */
+ if (nofp->nof_d_r || nofp->nof_d_r_dw || nofp->nof_d_r_drw) {
+ delegated = 1;
+ if (nofp->nof_d_r)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_d_r_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_d_r_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else if (nofp->nof_r || nofp->nof_r_dw || nofp->nof_r_drw) {
+ delegated = 0;
+ if (nofp->nof_r)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_r_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_r_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else if (nofp->nof_d_rw || nofp->nof_d_rw_dw || nofp->nof_d_rw_drw) {
+ /*
+ * This clause and the one below is to co-opt a read write access
+ * for a read only mmaping. We probably got here in that an
+ * existing rw open for an executable file already exists.
+ */
+ delegated = 1;
+ accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
+ if (nofp->nof_d_rw)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_d_rw_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_d_rw_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else if (nofp->nof_rw || nofp->nof_rw_dw || nofp->nof_rw_drw) {
+ delegated = 0;
+ accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
+ if (nofp->nof_rw)
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ else if (nofp->nof_rw_dw)
+ denyMode = NFS_OPEN_SHARE_DENY_WRITE;
+ else if (nofp->nof_rw_drw)
+ denyMode = NFS_OPEN_SHARE_DENY_BOTH;
+ } else {
+ error = EPERM;
+ }
+ }
+ if (error) /* mmap mode without proper open mode */
+ goto out;
+
+ /*
+ * If the existing mmap access is more than the new access OR the
+ * existing access is the same and the existing deny mode is less,
+ * then we'll stick with the existing mmap open mode.
+ */
+ if ((nofp->nof_mmap_access > accessMode) ||
+ ((nofp->nof_mmap_access == accessMode) && (nofp->nof_mmap_deny <= denyMode)))
+ goto out;
+
+ /* update mmap open mode */
+ if (nofp->nof_mmap_access) {
+ error = nfs_close(np, nofp, nofp->nof_mmap_access, nofp->nof_mmap_deny, ctx);
+ if (error) {
+ if (!nfs_mount_state_error_should_restart(error))
+ NP(np, "nfs_vnop_mmap: close of previous mmap mode failed: %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ NP(np, "nfs_vnop_mmap: update, close error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ goto out;
+ }
+ nofp->nof_mmap_access = nofp->nof_mmap_deny = 0;
+ }
+
+ nfs_open_file_add_open(nofp, accessMode, denyMode, delegated);
+ nofp->nof_mmap_access = accessMode;
+ nofp->nof_mmap_deny = denyMode;
+
+out:
+ if (nofp)
+ nfs_open_file_clear_busy(nofp);
+ if (nfs_mount_state_in_use_end(nmp, error)) {
+ nofp = NULL;
+ goto restart;
+ }
+ if (noop)
+ nfs_open_owner_rele(noop);
+
+ if (!error) {
+ int ismapped = 0;
+ nfs_node_lock_force(np);
+ if ((np->n_flag & NISMAPPED) == 0) {
+ np->n_flag |= NISMAPPED;
+ ismapped = 1;
+ }
+ nfs_node_unlock(np);
+ if (ismapped) {
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state &= ~NFSSTA_SQUISHY;
+ nmp->nm_curdeadtimeout = nmp->nm_deadtimeout;
+ if (nmp->nm_curdeadtimeout <= 0)
+ nmp->nm_deadto_start = 0;
+ nmp->nm_mappers++;
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ }
+
+ return (error);
+}
+
+
+int
+nfs_vnop_mnomap(
+ struct vnop_mnomap_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ vnode_t vp = ap->a_vp;
+ nfsnode_t np = VTONFS(vp);
+ struct nfsmount *nmp;
+ struct nfs_open_file *nofp = NULL;
+ off_t size;
+ int error;
+ int is_mapped_flag = 0;
+
+ nmp = VTONMP(vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ nfs_node_lock_force(np);
+ if (np->n_flag & NISMAPPED) {
+ is_mapped_flag = 1;
+ np->n_flag &= ~NISMAPPED;
+ }
+ nfs_node_unlock(np);
+ if (is_mapped_flag) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_mappers)
+ nmp->nm_mappers--;
+ else
+ NP(np, "nfs_vnop_mnomap: removing mmap reference from mount, but mount has no files mmapped");
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ /* flush buffers/ubc before we drop the open (in case it's our last open) */
+ nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
+ if (UBCINFOEXISTS(vp) && (size = ubc_getsize(vp)))
+ ubc_msync(vp, 0, size, NULL, UBC_PUSHALL | UBC_SYNC);
+
+ /* walk all open files and close all mmap opens */
+loop:
+ error = nfs_mount_state_in_use_start(nmp, NULL);
+ if (error)
+ return (error);
+ lck_mtx_lock(&np->n_openlock);
+ TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
+ if (!nofp->nof_mmap_access)
+ continue;
+ lck_mtx_unlock(&np->n_openlock);
+ if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ error = nfs4_reopen(nofp, NULL);
+ if (!error)
+ goto loop;
+ }
+ if (!error)
+ error = nfs_open_file_set_busy(nofp, NULL);
+ if (error) {
+ lck_mtx_lock(&np->n_openlock);
+ break;
+ }
+ if (nofp->nof_mmap_access) {
+ error = nfs_close(np, nofp, nofp->nof_mmap_access, nofp->nof_mmap_deny, ctx);
+ if (!nfs_mount_state_error_should_restart(error)) {
+ if (error) /* not a state-operation-restarting error, so just clear the access */
+ NP(np, "nfs_vnop_mnomap: close of mmap mode failed: %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ nofp->nof_mmap_access = nofp->nof_mmap_deny = 0;
+ }
+ if (error)
+ NP(np, "nfs_vnop_mnomap: error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ }
+ nfs_open_file_clear_busy(nofp);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto loop;
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_mount_state_in_use_end(nmp, error);
+ return (error);
+}
+
+/*
+ * Search a node's lock owner list for the owner for this process.
+ * If not found and "alloc" is set, then allocate a new one.
+ */
+struct nfs_lock_owner *
+nfs_lock_owner_find(nfsnode_t np, proc_t p, int alloc)
+{
+ pid_t pid = proc_pid(p);
+ struct nfs_lock_owner *nlop, *newnlop = NULL;
+
+tryagain:
+ lck_mtx_lock(&np->n_openlock);
+ TAILQ_FOREACH(nlop, &np->n_lock_owners, nlo_link) {
+ if (nlop->nlo_pid != pid)
+ continue;
+ if (timevalcmp(&nlop->nlo_pid_start, &p->p_start, ==))
+ break;
+ /* stale lock owner... reuse it if we can */
+ if (nlop->nlo_refcnt) {
+ TAILQ_REMOVE(&np->n_lock_owners, nlop, nlo_link);
+ nlop->nlo_flags &= ~NFS_LOCK_OWNER_LINK;
+ lck_mtx_unlock(&np->n_openlock);
+ goto tryagain;
+ }
+ nlop->nlo_pid_start = p->p_start;
+ nlop->nlo_seqid = 0;
+ nlop->nlo_stategenid = 0;
+ break;
+ }
+
+ if (!nlop && !newnlop && alloc) {
+ lck_mtx_unlock(&np->n_openlock);
+ MALLOC(newnlop, struct nfs_lock_owner *, sizeof(struct nfs_lock_owner), M_TEMP, M_WAITOK);
+ if (!newnlop)
+ return (NULL);
+ bzero(newnlop, sizeof(*newnlop));
+ lck_mtx_init(&newnlop->nlo_lock, nfs_open_grp, LCK_ATTR_NULL);
+ newnlop->nlo_pid = pid;
+ newnlop->nlo_pid_start = p->p_start;
+ newnlop->nlo_name = OSAddAtomic(1, &nfs_lock_owner_seqnum);
+ TAILQ_INIT(&newnlop->nlo_locks);
+ goto tryagain;
+ }
+ if (!nlop && newnlop) {
+ newnlop->nlo_flags |= NFS_LOCK_OWNER_LINK;
+ TAILQ_INSERT_HEAD(&np->n_lock_owners, newnlop, nlo_link);
+ nlop = newnlop;
+ }
+ lck_mtx_unlock(&np->n_openlock);
+
+ if (newnlop && (nlop != newnlop))
+ nfs_lock_owner_destroy(newnlop);
+
+ if (nlop)
+ nfs_lock_owner_ref(nlop);
+
+ return (nlop);
+}
+
+/*
+ * destroy a lock owner that's no longer needed
+ */
+void
+nfs_lock_owner_destroy(struct nfs_lock_owner *nlop)
+{
+ if (nlop->nlo_open_owner) {
+ nfs_open_owner_rele(nlop->nlo_open_owner);
+ nlop->nlo_open_owner = NULL;
+ }
+ lck_mtx_destroy(&nlop->nlo_lock, nfs_open_grp);
+ FREE(nlop, M_TEMP);
+}
+
+/*
+ * acquire a reference count on a lock owner
+ */
+void
+nfs_lock_owner_ref(struct nfs_lock_owner *nlop)
+{
+ lck_mtx_lock(&nlop->nlo_lock);
+ nlop->nlo_refcnt++;
+ lck_mtx_unlock(&nlop->nlo_lock);
+}
+
+/*
+ * drop a reference count on a lock owner and destroy it if
+ * it is no longer referenced and no longer on the mount's list.
+ */
+void
+nfs_lock_owner_rele(struct nfs_lock_owner *nlop)
+{
+ lck_mtx_lock(&nlop->nlo_lock);
+ if (nlop->nlo_refcnt < 1)
+ panic("nfs_lock_owner_rele: no refcnt");
+ nlop->nlo_refcnt--;
+ if (!nlop->nlo_refcnt && (nlop->nlo_flags & NFS_LOCK_OWNER_BUSY))
+ panic("nfs_lock_owner_rele: busy");
+ /* XXX we may potentially want to clean up idle/unused lock owner structures */
+ if (nlop->nlo_refcnt || (nlop->nlo_flags & NFS_LOCK_OWNER_LINK)) {
+ lck_mtx_unlock(&nlop->nlo_lock);
+ return;
+ }
+ /* owner is no longer referenced or linked to mount, so destroy it */
+ lck_mtx_unlock(&nlop->nlo_lock);
+ nfs_lock_owner_destroy(nlop);
+}
+
+/*
+ * Mark a lock owner as busy because we are about to
+ * start an operation that uses and updates lock owner state.
+ */
+int
+nfs_lock_owner_set_busy(struct nfs_lock_owner *nlop, thread_t thd)
+{
+ struct nfsmount *nmp;
+ struct timespec ts = {2, 0};
+ int error = 0, slpflag;
+
+ nmp = nlop->nlo_open_owner->noo_mount;
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
+
+ lck_mtx_lock(&nlop->nlo_lock);
+ while (nlop->nlo_flags & NFS_LOCK_OWNER_BUSY) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
+ break;
+ nlop->nlo_flags |= NFS_LOCK_OWNER_WANT;
+ msleep(nlop, &nlop->nlo_lock, slpflag, "nfs_lock_owner_set_busy", &ts);
+ slpflag = 0;
+ }
+ if (!error)
+ nlop->nlo_flags |= NFS_LOCK_OWNER_BUSY;
+ lck_mtx_unlock(&nlop->nlo_lock);
+
+ return (error);
+}
+
+/*
+ * Clear the busy flag on a lock owner and wake up anyone waiting
+ * to mark it busy.
+ */
+void
+nfs_lock_owner_clear_busy(struct nfs_lock_owner *nlop)
+{
+ int wanted;
+
+ lck_mtx_lock(&nlop->nlo_lock);
+ if (!(nlop->nlo_flags & NFS_LOCK_OWNER_BUSY))
+ panic("nfs_lock_owner_clear_busy");
+ wanted = (nlop->nlo_flags & NFS_LOCK_OWNER_WANT);
+ nlop->nlo_flags &= ~(NFS_LOCK_OWNER_BUSY|NFS_LOCK_OWNER_WANT);
+ lck_mtx_unlock(&nlop->nlo_lock);
+ if (wanted)
+ wakeup(nlop);
+}
+
+/*
+ * Insert a held lock into a lock owner's sorted list.
+ * (flock locks are always inserted at the head the list)
+ */
+void
+nfs_lock_owner_insert_held_lock(struct nfs_lock_owner *nlop, struct nfs_file_lock *newnflp)
+{
+ struct nfs_file_lock *nflp;
+
+ /* insert new lock in lock owner's held lock list */
+ lck_mtx_lock(&nlop->nlo_lock);
+ if ((newnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK) {
+ TAILQ_INSERT_HEAD(&nlop->nlo_locks, newnflp, nfl_lolink);
+ } else {
+ TAILQ_FOREACH(nflp, &nlop->nlo_locks, nfl_lolink) {
+ if (newnflp->nfl_start < nflp->nfl_start)
+ break;
+ }
+ if (nflp)
+ TAILQ_INSERT_BEFORE(nflp, newnflp, nfl_lolink);
+ else
+ TAILQ_INSERT_TAIL(&nlop->nlo_locks, newnflp, nfl_lolink);
+ }
+ lck_mtx_unlock(&nlop->nlo_lock);
+}
+
+/*
+ * Get a file lock structure for this lock owner.
+ */
+struct nfs_file_lock *
+nfs_file_lock_alloc(struct nfs_lock_owner *nlop)
+{
+ struct nfs_file_lock *nflp = NULL;
+
+ lck_mtx_lock(&nlop->nlo_lock);
+ if (!nlop->nlo_alock.nfl_owner) {
+ nflp = &nlop->nlo_alock;
+ nflp->nfl_owner = nlop;
+ }
+ lck_mtx_unlock(&nlop->nlo_lock);
+ if (!nflp) {
+ MALLOC(nflp, struct nfs_file_lock *, sizeof(struct nfs_file_lock), M_TEMP, M_WAITOK);
+ if (!nflp)
+ return (NULL);
+ bzero(nflp, sizeof(*nflp));
+ nflp->nfl_flags |= NFS_FILE_LOCK_ALLOC;
+ nflp->nfl_owner = nlop;
+ }
+ nfs_lock_owner_ref(nlop);
+ return (nflp);
+}
+
+/*
+ * destroy the given NFS file lock structure
+ */
+void
+nfs_file_lock_destroy(struct nfs_file_lock *nflp)
+{
+ struct nfs_lock_owner *nlop = nflp->nfl_owner;
+
+ if (nflp->nfl_flags & NFS_FILE_LOCK_ALLOC) {
+ nflp->nfl_owner = NULL;
+ FREE(nflp, M_TEMP);
+ } else {
+ lck_mtx_lock(&nlop->nlo_lock);
+ bzero(nflp, sizeof(*nflp));
+ lck_mtx_unlock(&nlop->nlo_lock);
+ }
+ nfs_lock_owner_rele(nlop);
+}
+
+/*
+ * Check if one file lock conflicts with another.
+ * (nflp1 is the new lock. nflp2 is the existing lock.)
+ */
+int
+nfs_file_lock_conflict(struct nfs_file_lock *nflp1, struct nfs_file_lock *nflp2, int *willsplit)
+{
+ /* no conflict if lock is dead */
+ if ((nflp1->nfl_flags & NFS_FILE_LOCK_DEAD) || (nflp2->nfl_flags & NFS_FILE_LOCK_DEAD))
+ return (0);
+ /* no conflict if it's ours - unless the lock style doesn't match */
+ if ((nflp1->nfl_owner == nflp2->nfl_owner) &&
+ ((nflp1->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == (nflp2->nfl_flags & NFS_FILE_LOCK_STYLE_MASK))) {
+ if (willsplit && (nflp1->nfl_type != nflp2->nfl_type) &&
+ (nflp1->nfl_start > nflp2->nfl_start) &&
+ (nflp1->nfl_end < nflp2->nfl_end))
+ *willsplit = 1;
+ return (0);
+ }
+ /* no conflict if ranges don't overlap */
+ if ((nflp1->nfl_start > nflp2->nfl_end) || (nflp1->nfl_end < nflp2->nfl_start))
+ return (0);
+ /* no conflict if neither lock is exclusive */
+ if ((nflp1->nfl_type != F_WRLCK) && (nflp2->nfl_type != F_WRLCK))
+ return (0);
+ /* conflict */
+ return (1);
+}
+
+/*
+ * Send an NFSv4 LOCK RPC to the server.
+ */
+int
+nfs4_setlock_rpc(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ struct nfs_file_lock *nflp,
+ int reclaim,
+ int flags,
+ thread_t thd,
+ kauth_cred_t cred)
+{
+ struct nfs_lock_owner *nlop = nflp->nfl_owner;
+ struct nfsmount *nmp;
+ struct nfsm_chain nmreq, nmrep;
+ uint64_t xid;
+ uint32_t locktype;
+ int error = 0, lockerror = ENOENT, newlocker, numops, status;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+
+ newlocker = (nlop->nlo_stategenid != nmp->nm_stategenid);
+ locktype = (nflp->nfl_flags & NFS_FILE_LOCK_WAIT) ?
+ ((nflp->nfl_type == F_WRLCK) ?
+ NFS_LOCK_TYPE_WRITEW :
+ NFS_LOCK_TYPE_READW) :
+ ((nflp->nfl_type == F_WRLCK) ?
+ NFS_LOCK_TYPE_WRITE :
+ NFS_LOCK_TYPE_READ);
+ if (newlocker) {
+ error = nfs_open_file_set_busy(nofp, thd);
+ if (error)
+ return (error);
+ error = nfs_open_owner_set_busy(nofp->nof_owner, thd);
+ if (error) {
+ nfs_open_file_clear_busy(nofp);
+ return (error);
+ }
+ if (!nlop->nlo_open_owner) {
+ nfs_open_owner_ref(nofp->nof_owner);
+ nlop->nlo_open_owner = nofp->nof_owner;
+ }
+ }
+ error = nfs_lock_owner_set_busy(nlop, thd);
+ if (error) {
+ if (newlocker) {
+ nfs_open_owner_clear_busy(nofp->nof_owner);
+ nfs_open_file_clear_busy(nofp);
+ }
+ return (error);
+ }
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, GETATTR, LOCK
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 33 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "lock", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCK);
+ nfsm_chain_add_32(error, &nmreq, locktype);
+ nfsm_chain_add_32(error, &nmreq, reclaim);
+ nfsm_chain_add_64(error, &nmreq, nflp->nfl_start);
+ nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(nflp->nfl_start, nflp->nfl_end));
+ nfsm_chain_add_32(error, &nmreq, newlocker);
+ if (newlocker) {
+ nfsm_chain_add_32(error, &nmreq, nofp->nof_owner->noo_seqid);
+ nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
+ nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
+ nfsm_chain_add_lock_owner4(error, &nmreq, nmp, nlop);
+ } else {
+ nfsm_chain_add_stateid(error, &nmreq, &nlop->nlo_stateid);
+ nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
+ }
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCK);
+ nfs_owner_seqid_increment(newlocker ? nofp->nof_owner : NULL, nlop, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nlop->nlo_stateid);
+
+ /* Update the lock owner's stategenid once it appears the server has state for it. */
+ /* We determine this by noting the request was successful (we got a stateid). */
+ if (newlocker && !error)
+ nlop->nlo_stategenid = nmp->nm_stategenid;
+nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_lock_owner_clear_busy(nlop);
+ if (newlocker) {
+ nfs_open_owner_clear_busy(nofp->nof_owner);
+ nfs_open_file_clear_busy(nofp);
+ }
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/*
+ * Send an NFSv4 LOCKU RPC to the server.
+ */
+int
+nfs4_unlock_rpc(
+ nfsnode_t np,
+ struct nfs_lock_owner *nlop,
+ int type,
+ uint64_t start,
+ uint64_t end,
+ int flags,
+ thread_t thd,
+ kauth_cred_t cred)
+{
+ struct nfsmount *nmp;
+ struct nfsm_chain nmreq, nmrep;
+ uint64_t xid;
+ int error = 0, lockerror = ENOENT, numops, status;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+
+ error = nfs_lock_owner_set_busy(nlop, NULL);
+ if (error)
+ return (error);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, GETATTR, LOCKU
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "unlock", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCKU);
+ nfsm_chain_add_32(error, &nmreq, (type == F_WRLCK) ? NFS_LOCK_TYPE_WRITE : NFS_LOCK_TYPE_READ);
+ nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
+ nfsm_chain_add_stateid(error, &nmreq, &nlop->nlo_stateid);
+ nfsm_chain_add_64(error, &nmreq, start);
+ nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(start, end));
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCKU);
+ nfs_owner_seqid_increment(NULL, nlop, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nlop->nlo_stateid);
+nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_lock_owner_clear_busy(nlop);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/*
+ * Send an NFSv4 LOCKT RPC to the server.
+ */
+int
+nfs4_getlock_rpc(
+ nfsnode_t np,
+ struct nfs_lock_owner *nlop,
+ struct flock *fl,
+ uint64_t start,
+ uint64_t end,
+ vfs_context_t ctx)
+{
+ struct nfsmount *nmp;
+ struct nfsm_chain nmreq, nmrep;
+ uint64_t xid, val64 = 0;
+ uint32_t val = 0;
+ int error = 0, lockerror, numops, status;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+
+ lockerror = ENOENT;
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, GETATTR, LOCKT
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "locktest", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCKT);
+ nfsm_chain_add_32(error, &nmreq, (fl->l_type == F_WRLCK) ? NFS_LOCK_TYPE_WRITE : NFS_LOCK_TYPE_READ);
+ nfsm_chain_add_64(error, &nmreq, start);
+ nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(start, end));
+ nfsm_chain_add_lock_owner4(error, &nmreq, nmp, nlop);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCKT);
+ if (error == NFSERR_DENIED) {
+ error = 0;
+ nfsm_chain_get_64(error, &nmrep, fl->l_start);
+ nfsm_chain_get_64(error, &nmrep, val64);
+ fl->l_len = (val64 == UINT64_MAX) ? 0 : val64;
+ nfsm_chain_get_32(error, &nmrep, val);
+ fl->l_type = (val == NFS_LOCK_TYPE_WRITE) ? F_WRLCK : F_RDLCK;
+ fl->l_pid = 0;
+ fl->l_whence = SEEK_SET;
+ } else if (!error) {
+ fl->l_type = F_UNLCK;
+ }
+nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+
+/*
+ * Check for any conflicts with the given lock.
+ *
+ * Checking for a lock doesn't require the file to be opened.
+ * So we skip all the open owner, open file, lock owner work
+ * and just check for a conflicting lock.
+ */
+int
+nfs_advlock_getlock(
+ nfsnode_t np,
+ struct nfs_lock_owner *nlop,
+ struct flock *fl,
+ uint64_t start,
+ uint64_t end,
+ vfs_context_t ctx)
+{
+ struct nfsmount *nmp;
+ struct nfs_file_lock *nflp;
+ int error = 0, answered = 0;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+restart:
+ if ((error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx))))
+ return (error);
+
+ lck_mtx_lock(&np->n_openlock);
+ /* scan currently held locks for conflict */
+ TAILQ_FOREACH(nflp, &np->n_locks, nfl_link) {
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
+ continue;
+ if ((start <= nflp->nfl_end) && (end >= nflp->nfl_start) &&
+ ((fl->l_type == F_WRLCK) || (nflp->nfl_type == F_WRLCK)))
+ break;
+ }
+ if (nflp) {
+ /* found a conflicting lock */
+ fl->l_type = nflp->nfl_type;
+ fl->l_pid = (nflp->nfl_flags & NFS_FILE_LOCK_STYLE_FLOCK) ? -1 : nflp->nfl_owner->nlo_pid;
+ fl->l_start = nflp->nfl_start;
+ fl->l_len = NFS_FLOCK_LENGTH(nflp->nfl_start, nflp->nfl_end);
+ fl->l_whence = SEEK_SET;
+ answered = 1;
+ } else if ((np->n_openflags & N_DELEG_WRITE) && !(np->n_openflags & N_DELEG_RETURN)) {
+ /*
+ * If we have a write delegation, we know there can't be other
+ * locks on the server. So the answer is no conflicting lock found.
+ */
+ fl->l_type = F_UNLCK;
+ answered = 1;
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ if (answered) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ return (0);
+ }
+
+ /* no conflict found locally, so ask the server */
+ error = nmp->nm_funcs->nf_getlock_rpc(np, nlop, fl, start, end, ctx);
+
+ if (nfs_mount_state_in_use_end(nmp, error))
+ goto restart;
+ return (error);
+}
+
+/*
+ * Acquire a file lock for the given range.
+ *
+ * Add the lock (request) to the lock queue.
+ * Scan the lock queue for any conflicting locks.
+ * If a conflict is found, block or return an error.
+ * Once end of queue is reached, send request to the server.
+ * If the server grants the lock, scan the lock queue and
+ * update any existing locks. Then (optionally) scan the
+ * queue again to coalesce any locks adjacent to the new one.
+ */
+int
+nfs_advlock_setlock(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ struct nfs_lock_owner *nlop,
+ int op,
+ uint64_t start,
+ uint64_t end,
+ int style,
+ short type,
+ vfs_context_t ctx)
+{
+ struct nfsmount *nmp;
+ struct nfs_file_lock *newnflp, *nflp, *nflp2 = NULL, *nextnflp, *flocknflp = NULL;
+ struct nfs_file_lock *coalnflp;
+ int error = 0, error2, willsplit = 0, delay, slpflag, busy = 0, inuse = 0, restart, inqueue = 0;
+ struct timespec ts = {1, 0};
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
+
+ if ((type != F_RDLCK) && (type != F_WRLCK))
+ return (EINVAL);
+
+ /* allocate a new lock */
+ newnflp = nfs_file_lock_alloc(nlop);
+ if (!newnflp)
+ return (ENOLCK);
+ newnflp->nfl_start = start;
+ newnflp->nfl_end = end;
+ newnflp->nfl_type = type;
+ if (op == F_SETLKW)
+ newnflp->nfl_flags |= NFS_FILE_LOCK_WAIT;
+ newnflp->nfl_flags |= style;
+ newnflp->nfl_flags |= NFS_FILE_LOCK_BLOCKED;
+
+ if ((style == NFS_FILE_LOCK_STYLE_FLOCK) && (type == F_WRLCK)) {
+ /*
+ * For exclusive flock-style locks, if we block waiting for the
+ * lock, we need to first release any currently held shared
+ * flock-style lock. So, the first thing we do is check if we
+ * have a shared flock-style lock.
+ */
+ nflp = TAILQ_FIRST(&nlop->nlo_locks);
+ if (nflp && ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != NFS_FILE_LOCK_STYLE_FLOCK))
+ nflp = NULL;
+ if (nflp && (nflp->nfl_type != F_RDLCK))
+ nflp = NULL;
+ flocknflp = nflp;
+ }
+
+restart:
+ restart = 0;
+ error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (error)
+ goto error_out;
+ inuse = 1;
+ if (np->n_flag & NREVOKE) {
+ error = EIO;
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ goto error_out;
+ }
+ if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ error = nfs4_reopen(nofp, vfs_context_thread(ctx));
+ if (error)
+ goto error_out;
+ goto restart;
+ }
+
+ lck_mtx_lock(&np->n_openlock);
+ if (!inqueue) {
+ /* insert new lock at beginning of list */
+ TAILQ_INSERT_HEAD(&np->n_locks, newnflp, nfl_link);
+ inqueue = 1;
+ }
+
+ /* scan current list of locks (held and pending) for conflicts */
+ for (nflp = TAILQ_NEXT(newnflp, nfl_link); nflp; nflp = nextnflp) {
+ nextnflp = TAILQ_NEXT(nflp, nfl_link);
+ if (!nfs_file_lock_conflict(newnflp, nflp, &willsplit))
+ continue;
+ /* Conflict */
+ if (!(newnflp->nfl_flags & NFS_FILE_LOCK_WAIT)) {
+ error = EAGAIN;
+ break;
+ }
+ /* Block until this lock is no longer held. */
+ if (nflp->nfl_blockcnt == UINT_MAX) {
+ error = ENOLCK;
+ break;
+ }
+ nflp->nfl_blockcnt++;
+ do {
+ if (flocknflp) {
+ /* release any currently held shared lock before sleeping */
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ error = nfs_advlock_unlock(np, nofp, nlop, 0, UINT64_MAX, NFS_FILE_LOCK_STYLE_FLOCK, ctx);
+ flocknflp = NULL;
+ if (!error)
+ error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (error) {
+ lck_mtx_lock(&np->n_openlock);
+ break;
+ }
+ inuse = 1;
+ lck_mtx_lock(&np->n_openlock);
+ /* no need to block/sleep if the conflict is gone */
+ if (!nfs_file_lock_conflict(newnflp, nflp, NULL))
+ break;
+ }
+ msleep(nflp, &np->n_openlock, slpflag, "nfs_advlock_setlock_blocked", &ts);
+ slpflag = 0;
+ error = nfs_sigintr(NFSTONMP(np), NULL, vfs_context_thread(ctx), 0);
+ if (!error && (nmp->nm_state & NFSSTA_RECOVER)) {
+ /* looks like we have a recover pending... restart */
+ restart = 1;
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ lck_mtx_lock(&np->n_openlock);
+ break;
+ }
+ if (!error && (np->n_flag & NREVOKE))
+ error = EIO;
+ } while (!error && nfs_file_lock_conflict(newnflp, nflp, NULL));
+ nflp->nfl_blockcnt--;
+ if ((nflp->nfl_flags & NFS_FILE_LOCK_DEAD) && !nflp->nfl_blockcnt) {
+ TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
+ nfs_file_lock_destroy(nflp);
+ }
+ if (error || restart)
+ break;
+ /* We have released n_openlock and we can't trust that nextnflp is still valid. */
+ /* So, start this lock-scanning loop over from where it started. */
+ nextnflp = TAILQ_NEXT(newnflp, nfl_link);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ if (restart)
+ goto restart;
+ if (error)
+ goto error_out;
+
+ if (willsplit) {
+ /*
+ * It looks like this operation is splitting a lock.
+ * We allocate a new lock now so we don't have to worry
+ * about the allocation failing after we've updated some state.
+ */
+ nflp2 = nfs_file_lock_alloc(nlop);
+ if (!nflp2) {
+ error = ENOLCK;
+ goto error_out;
+ }
+ }
+
+ /* once scan for local conflicts is clear, send request to server */
+ if ((error = nfs_open_state_set_busy(np, vfs_context_thread(ctx))))
+ goto error_out;
+ busy = 1;
+ delay = 0;
+ do {
+ /* do we have a delegation? (that we're not returning?) */
+ if ((np->n_openflags & N_DELEG_MASK) && !(np->n_openflags & N_DELEG_RETURN)) {
+ if (np->n_openflags & N_DELEG_WRITE) {
+ /* with a write delegation, just take the lock delegated */
+ newnflp->nfl_flags |= NFS_FILE_LOCK_DELEGATED;
+ error = 0;
+ /* make sure the lock owner knows its open owner */
+ if (!nlop->nlo_open_owner) {
+ nfs_open_owner_ref(nofp->nof_owner);
+ nlop->nlo_open_owner = nofp->nof_owner;
+ }
+ break;
+ } else {
+ /*
+ * If we don't have any non-delegated opens but we do have
+ * delegated opens, then we need to first claim the delegated
+ * opens so that the lock request on the server can be associated
+ * with an open it knows about.
+ */
+ if ((!nofp->nof_rw_drw && !nofp->nof_w_drw && !nofp->nof_r_drw &&
+ !nofp->nof_rw_dw && !nofp->nof_w_dw && !nofp->nof_r_dw &&
+ !nofp->nof_rw && !nofp->nof_w && !nofp->nof_r) &&
+ (nofp->nof_d_rw_drw || nofp->nof_d_w_drw || nofp->nof_d_r_drw ||
+ nofp->nof_d_rw_dw || nofp->nof_d_w_dw || nofp->nof_d_r_dw ||
+ nofp->nof_d_rw || nofp->nof_d_w || nofp->nof_d_r)) {
+ error = nfs4_claim_delegated_state_for_open_file(nofp, 0);
+ if (error)
+ break;
+ }
+ }
+ }
+ if (np->n_flag & NREVOKE)
+ error = EIO;
+ if (!error)
+ error = nmp->nm_funcs->nf_setlock_rpc(np, nofp, newnflp, 0, 0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (!error || ((error != NFSERR_DENIED) && (error != NFSERR_GRACE)))
+ break;
+ /* request was denied due to either conflict or grace period */
+ if ((error == NFSERR_DENIED) && !(newnflp->nfl_flags & NFS_FILE_LOCK_WAIT)) {
+ error = EAGAIN;
+ break;
+ }
+ if (flocknflp) {
+ /* release any currently held shared lock before sleeping */
+ nfs_open_state_clear_busy(np);
+ busy = 0;
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ error2 = nfs_advlock_unlock(np, nofp, nlop, 0, UINT64_MAX, NFS_FILE_LOCK_STYLE_FLOCK, ctx);
+ flocknflp = NULL;
+ if (!error2)
+ error2 = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (!error2) {
+ inuse = 1;
+ error2 = nfs_open_state_set_busy(np, vfs_context_thread(ctx));
+ }
+ if (error2) {
+ error = error2;
+ break;
+ }
+ busy = 1;
+ }
+ /*
+ * Wait a little bit and send the request again.
+ * Except for retries of blocked v2/v3 request where we've already waited a bit.
+ */
+ if ((nmp->nm_vers >= NFS_VER4) || (error == NFSERR_GRACE)) {
+ if (error == NFSERR_GRACE)
+ delay = 4;
+ if (delay < 4)
+ delay++;
+ tsleep(newnflp, slpflag, "nfs_advlock_setlock_delay", delay * (hz/2));
+ slpflag = 0;
+ }
+ error = nfs_sigintr(NFSTONMP(np), NULL, vfs_context_thread(ctx), 0);
+ if (!error && (nmp->nm_state & NFSSTA_RECOVER)) {
+ /* looks like we have a recover pending... restart */
+ nfs_open_state_clear_busy(np);
+ busy = 0;
+ nfs_mount_state_in_use_end(nmp, 0);
+ inuse = 0;
+ goto restart;
+ }
+ if (!error && (np->n_flag & NREVOKE))
+ error = EIO;
+ } while (!error);
+
+error_out:
+ if (nfs_mount_state_error_should_restart(error)) {
+ /* looks like we need to restart this operation */
+ if (busy) {
+ nfs_open_state_clear_busy(np);
+ busy = 0;
+ }
+ if (inuse) {
+ nfs_mount_state_in_use_end(nmp, error);
+ inuse = 0;
+ }
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ newnflp->nfl_flags &= ~NFS_FILE_LOCK_BLOCKED;
+ if (error) {
+ newnflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ if (newnflp->nfl_blockcnt) {
+ /* wake up anyone blocked on this lock */
+ wakeup(newnflp);
+ } else {
+ /* remove newnflp from lock list and destroy */
+ if (inqueue)
+ TAILQ_REMOVE(&np->n_locks, newnflp, nfl_link);
+ nfs_file_lock_destroy(newnflp);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ if (busy)
+ nfs_open_state_clear_busy(np);
+ if (inuse)
+ nfs_mount_state_in_use_end(nmp, error);
+ if (nflp2)
+ nfs_file_lock_destroy(nflp2);
+ return (error);
+ }
+
+ /* server granted the lock */
+
+ /*
+ * Scan for locks to update.
+ *
+ * Locks completely covered are killed.
+ * At most two locks may need to be clipped.
+ * It's possible that a single lock may need to be split.
+ */
+ TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
+ if (nflp == newnflp)
+ continue;
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
+ continue;
+ if (nflp->nfl_owner != nlop)
+ continue;
+ if ((newnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != (nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK))
+ continue;
+ if ((newnflp->nfl_start > nflp->nfl_end) || (newnflp->nfl_end < nflp->nfl_start))
+ continue;
+ /* here's one to update */
+ if ((newnflp->nfl_start <= nflp->nfl_start) && (newnflp->nfl_end >= nflp->nfl_end)) {
+ /* The entire lock is being replaced. */
+ nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ lck_mtx_lock(&nlop->nlo_lock);
+ TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
+ lck_mtx_unlock(&nlop->nlo_lock);
+ /* lock will be destroyed below, if no waiters */
+ } else if ((newnflp->nfl_start > nflp->nfl_start) && (newnflp->nfl_end < nflp->nfl_end)) {
+ /* We're replacing a range in the middle of a lock. */
+ /* The current lock will be split into two locks. */
+ /* Update locks and insert new lock after current lock. */
+ nflp2->nfl_flags |= (nflp->nfl_flags & (NFS_FILE_LOCK_STYLE_MASK|NFS_FILE_LOCK_DELEGATED));
+ nflp2->nfl_type = nflp->nfl_type;
+ nflp2->nfl_start = newnflp->nfl_end + 1;
+ nflp2->nfl_end = nflp->nfl_end;
+ nflp->nfl_end = newnflp->nfl_start - 1;
+ TAILQ_INSERT_AFTER(&np->n_locks, nflp, nflp2, nfl_link);
+ nfs_lock_owner_insert_held_lock(nlop, nflp2);
+ nextnflp = nflp2;
+ nflp2 = NULL;
+ } else if (newnflp->nfl_start > nflp->nfl_start) {
+ /* We're replacing the end of a lock. */
+ nflp->nfl_end = newnflp->nfl_start - 1;
+ } else if (newnflp->nfl_end < nflp->nfl_end) {
+ /* We're replacing the start of a lock. */
+ nflp->nfl_start = newnflp->nfl_end + 1;
+ }
+ if (nflp->nfl_blockcnt) {
+ /* wake up anyone blocked on this lock */
+ wakeup(nflp);
+ } else if (nflp->nfl_flags & NFS_FILE_LOCK_DEAD) {
+ /* remove nflp from lock list and destroy */
+ TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
+ nfs_file_lock_destroy(nflp);
+ }
+ }
+
+ nfs_lock_owner_insert_held_lock(nlop, newnflp);
+
+ /*
+ * POSIX locks should be coalesced when possible.
+ */
+ if ((style == NFS_FILE_LOCK_STYLE_POSIX) && (nofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)) {
+ /*
+ * Walk through the lock queue and check each of our held locks with
+ * the previous and next locks in the lock owner's "held lock list".
+ * If the two locks can be coalesced, we merge the current lock into
+ * the other (previous or next) lock. Merging this way makes sure that
+ * lock ranges are always merged forward in the lock queue. This is
+ * important because anyone blocked on the lock being "merged away"
+ * will still need to block on that range and it will simply continue
+ * checking locks that are further down the list.
+ */
+ TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
+ continue;
+ if (nflp->nfl_owner != nlop)
+ continue;
+ if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != NFS_FILE_LOCK_STYLE_POSIX)
+ continue;
+ if (((coalnflp = TAILQ_PREV(nflp, nfs_file_lock_queue, nfl_lolink))) &&
+ ((coalnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) &&
+ (coalnflp->nfl_type == nflp->nfl_type) &&
+ (coalnflp->nfl_end == (nflp->nfl_start - 1))) {
+ coalnflp->nfl_end = nflp->nfl_end;
+ nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ lck_mtx_lock(&nlop->nlo_lock);
+ TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
+ lck_mtx_unlock(&nlop->nlo_lock);
+ } else if (((coalnflp = TAILQ_NEXT(nflp, nfl_lolink))) &&
+ ((coalnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) &&
+ (coalnflp->nfl_type == nflp->nfl_type) &&
+ (coalnflp->nfl_start == (nflp->nfl_end + 1))) {
+ coalnflp->nfl_start = nflp->nfl_start;
+ nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ lck_mtx_lock(&nlop->nlo_lock);
+ TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
+ lck_mtx_unlock(&nlop->nlo_lock);
+ }
+ if (!(nflp->nfl_flags & NFS_FILE_LOCK_DEAD))
+ continue;
+ if (nflp->nfl_blockcnt) {
+ /* wake up anyone blocked on this lock */
+ wakeup(nflp);
+ } else {
+ /* remove nflp from lock list and destroy */
+ TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
+ nfs_file_lock_destroy(nflp);
+ }
+ }
+ }
+
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+
+ if (nflp2)
+ nfs_file_lock_destroy(nflp2);
+ return (error);
+}
+
+/*
+ * Release all (same style) locks within the given range.
+ */
+int
+nfs_advlock_unlock(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ struct nfs_lock_owner *nlop,
+ uint64_t start,
+ uint64_t end,
+ int style,
+ vfs_context_t ctx)
+{
+ struct nfsmount *nmp;
+ struct nfs_file_lock *nflp, *nextnflp, *newnflp = NULL;
+ int error = 0, willsplit = 0, send_unlock_rpcs = 1;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+restart:
+ if ((error = nfs_mount_state_in_use_start(nmp, NULL)))
+ return (error);
+ if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ error = nfs4_reopen(nofp, NULL);
+ if (error)
+ return (error);
+ goto restart;
+ }
+ if ((error = nfs_open_state_set_busy(np, NULL))) {
+ nfs_mount_state_in_use_end(nmp, error);
+ return (error);
+ }
+
+ lck_mtx_lock(&np->n_openlock);
+ if ((start > 0) && (end < UINT64_MAX) && !willsplit) {
+ /*
+ * We may need to allocate a new lock if an existing lock gets split.
+ * So, we first scan the list to check for a split, and if there's
+ * going to be one, we'll allocate one now.
+ */
+ TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
+ continue;
+ if (nflp->nfl_owner != nlop)
+ continue;
+ if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != style)
+ continue;
+ if ((start > nflp->nfl_end) || (end < nflp->nfl_start))
+ continue;
+ if ((start > nflp->nfl_start) && (end < nflp->nfl_end)) {
+ willsplit = 1;
+ break;
+ }
+ }
+ if (willsplit) {
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, 0);
+ newnflp = nfs_file_lock_alloc(nlop);
+ if (!newnflp)
+ return (ENOMEM);
+ goto restart;
+ }
+ }
+
+ /*
+ * Free all of our locks in the given range.
+ *
+ * Note that this process requires sending requests to the server.
+ * Because of this, we will release the n_openlock while performing
+ * the unlock RPCs. The N_OPENBUSY state keeps the state of *held*
+ * locks from changing underneath us. However, other entries in the
+ * list may be removed. So we need to be careful walking the list.
+ */
+
+ /*
+ * Don't unlock ranges that are held by other-style locks.
+ * If style is posix, don't send any unlock rpcs if flock is held.
+ * If we unlock an flock, don't send unlock rpcs for any posix-style
+ * ranges held - instead send unlocks for the ranges not held.
+ */
+ if ((style == NFS_FILE_LOCK_STYLE_POSIX) &&
+ ((nflp = TAILQ_FIRST(&nlop->nlo_locks))) &&
+ ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK))
+ send_unlock_rpcs = 0;
+ if ((style == NFS_FILE_LOCK_STYLE_FLOCK) &&
+ ((nflp = TAILQ_FIRST(&nlop->nlo_locks))) &&
+ ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK) &&
+ ((nflp = TAILQ_NEXT(nflp, nfl_lolink))) &&
+ ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX)) {
+ uint64_t s = 0;
+ int type = TAILQ_FIRST(&nlop->nlo_locks)->nfl_type;
+ int delegated = (TAILQ_FIRST(&nlop->nlo_locks)->nfl_flags & NFS_FILE_LOCK_DELEGATED);
+ while (!delegated && nflp) {
+ if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) {
+ /* unlock the range preceding this lock */
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, type, s, nflp->nfl_start-1, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ if (error)
+ goto out;
+ s = nflp->nfl_end+1;
+ }
+ nflp = TAILQ_NEXT(nflp, nfl_lolink);
+ }
+ if (!delegated) {
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, type, s, end, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ if (error)
+ goto out;
+ }
+ send_unlock_rpcs = 0;
+ }
+
+ TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
+ continue;
+ if (nflp->nfl_owner != nlop)
+ continue;
+ if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != style)
+ continue;
+ if ((start > nflp->nfl_end) || (end < nflp->nfl_start))
+ continue;
+ /* here's one to unlock */
+ if ((start <= nflp->nfl_start) && (end >= nflp->nfl_end)) {
+ /* The entire lock is being unlocked. */
+ if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, nflp->nfl_start, nflp->nfl_end, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ }
+ nextnflp = TAILQ_NEXT(nflp, nfl_link);
+ if (error)
+ break;
+ nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ lck_mtx_lock(&nlop->nlo_lock);
+ TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
+ lck_mtx_unlock(&nlop->nlo_lock);
+ /* lock will be destroyed below, if no waiters */
+ } else if ((start > nflp->nfl_start) && (end < nflp->nfl_end)) {
+ /* We're unlocking a range in the middle of a lock. */
+ /* The current lock will be split into two locks. */
+ if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, start, end, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ }
+ if (error)
+ break;
+ /* update locks and insert new lock after current lock */
+ newnflp->nfl_flags |= (nflp->nfl_flags & (NFS_FILE_LOCK_STYLE_MASK|NFS_FILE_LOCK_DELEGATED));
+ newnflp->nfl_type = nflp->nfl_type;
+ newnflp->nfl_start = end + 1;
+ newnflp->nfl_end = nflp->nfl_end;
+ nflp->nfl_end = start - 1;
+ TAILQ_INSERT_AFTER(&np->n_locks, nflp, newnflp, nfl_link);
+ nfs_lock_owner_insert_held_lock(nlop, newnflp);
+ nextnflp = newnflp;
+ newnflp = NULL;
+ } else if (start > nflp->nfl_start) {
+ /* We're unlocking the end of a lock. */
+ if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, start, nflp->nfl_end, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ }
+ nextnflp = TAILQ_NEXT(nflp, nfl_link);
+ if (error)
+ break;
+ nflp->nfl_end = start - 1;
+ } else if (end < nflp->nfl_end) {
+ /* We're unlocking the start of a lock. */
+ if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
+ lck_mtx_unlock(&np->n_openlock);
+ error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, nflp->nfl_start, end, 0,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ if (nfs_mount_state_error_should_restart(error)) {
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, error);
+ goto restart;
+ }
+ lck_mtx_lock(&np->n_openlock);
+ }
+ nextnflp = TAILQ_NEXT(nflp, nfl_link);
+ if (error)
+ break;
+ nflp->nfl_start = end + 1;
+ }
+ if (nflp->nfl_blockcnt) {
+ /* wake up anyone blocked on this lock */
+ wakeup(nflp);
+ } else if (nflp->nfl_flags & NFS_FILE_LOCK_DEAD) {
+ /* remove nflp from lock list and destroy */
+ TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
+ nfs_file_lock_destroy(nflp);
+ }
+ }
+out:
+ lck_mtx_unlock(&np->n_openlock);
+ nfs_open_state_clear_busy(np);
+ nfs_mount_state_in_use_end(nmp, 0);
+
+ if (newnflp)
+ nfs_file_lock_destroy(newnflp);
+ return (error);
+}
+
+/*
+ * NFSv4 advisory file locking
+ */
+int
+nfs_vnop_advlock(
+ struct vnop_advlock_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ caddr_t a_id;
+ int a_op;
+ struct flock *a_fl;
+ int a_flags;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vnode_t vp = ap->a_vp;
+ nfsnode_t np = VTONFS(ap->a_vp);
+ struct flock *fl = ap->a_fl;
+ int op = ap->a_op;
+ int flags = ap->a_flags;
+ vfs_context_t ctx = ap->a_context;
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop = NULL;
+ struct nfs_open_file *nofp = NULL;
+ struct nfs_lock_owner *nlop = NULL;
+ off_t lstart;
+ uint64_t start, end;
+ int error = 0, modified, style;
+ enum vtype vtype;
+#define OFF_MAX QUAD_MAX
+
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ lck_mtx_lock(&nmp->nm_lock);
+ if ((nmp->nm_vers <= NFS_VER3) && (nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED)) {
+ lck_mtx_unlock(&nmp->nm_lock);
+ return (ENOTSUP);
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ if (np->n_flag & NREVOKE)
+ return (EIO);
+ vtype = vnode_vtype(ap->a_vp);
+ if (vtype == VDIR) /* ignore lock requests on directories */
+ return (0);
+ if (vtype != VREG) /* anything other than regular files is invalid */
+ return (EINVAL);
+
+ /* Convert the flock structure into a start and end. */
+ switch (fl->l_whence) {
+ case SEEK_SET:
+ case SEEK_CUR:
+ /*
+ * Caller is responsible for adding any necessary offset
+ * to fl->l_start when SEEK_CUR is used.
+ */
+ lstart = fl->l_start;
+ break;
+ case SEEK_END:
+ /* need to flush, and refetch attributes to make */
+ /* sure we have the correct end of file offset */
+ if ((error = nfs_node_lock(np)))
+ return (error);
+ modified = (np->n_flag & NMODIFIED);
+ nfs_node_unlock(np);
+ if (modified && ((error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1))))
+ return (error);
+ if ((error = nfs_getattr(np, NULL, ctx, NGA_UNCACHED)))
+ return (error);
+ nfs_data_lock(np, NFS_DATA_LOCK_SHARED);
+ if ((np->n_size > OFF_MAX) ||
+ ((fl->l_start > 0) && (np->n_size > (u_quad_t)(OFF_MAX - fl->l_start))))
+ error = EOVERFLOW;
+ lstart = np->n_size + fl->l_start;
+ nfs_data_unlock(np);
+ if (error)
+ return (error);
+ break;
+ default:
+ return (EINVAL);
+ }
+ if (lstart < 0)
+ return (EINVAL);
+ start = lstart;
+ if (fl->l_len == 0) {
+ end = UINT64_MAX;
+ } else if (fl->l_len > 0) {
+ if ((fl->l_len - 1) > (OFF_MAX - lstart))
+ return (EOVERFLOW);
+ end = start - 1 + fl->l_len;
+ } else { /* l_len is negative */
+ if ((lstart + fl->l_len) < 0)
+ return (EINVAL);
+ end = start - 1;
+ start += fl->l_len;
+ }
+ if ((nmp->nm_vers == NFS_VER2) && ((start > INT32_MAX) || (fl->l_len && (end > INT32_MAX))))
+ return (EINVAL);
+
+ style = (flags & F_FLOCK) ? NFS_FILE_LOCK_STYLE_FLOCK : NFS_FILE_LOCK_STYLE_POSIX;
+ if ((style == NFS_FILE_LOCK_STYLE_FLOCK) && ((start != 0) || (end != UINT64_MAX)))
+ return (EINVAL);
+
+ /* find the lock owner, alloc if not unlock */
+ nlop = nfs_lock_owner_find(np, vfs_context_proc(ctx), (op != F_UNLCK));
+ if (!nlop) {
+ error = (op == F_UNLCK) ? 0 : ENOMEM;
+ if (error)
+ NP(np, "nfs_vnop_advlock: no lock owner, error %d", error);
+ goto out;
+ }
+
+ if (op == F_GETLK) {
+ error = nfs_advlock_getlock(np, nlop, fl, start, end, ctx);
+ } else {
+ /* find the open owner */
+ noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 0);
+ if (!noop) {
+ NP(np, "nfs_vnop_advlock: no open owner %d", kauth_cred_getuid(vfs_context_ucred(ctx)));
+ error = EPERM;
+ goto out;
+ }
+ /* find the open file */
+restart:
+ error = nfs_open_file_find(np, noop, &nofp, 0, 0, 0);
+ if (error)
+ error = EBADF;
+ if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
+ NP(np, "nfs_vnop_advlock: LOST %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ error = EIO;
+ }
+ if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ error = nfs4_reopen(nofp, ((op == F_UNLCK) ? NULL : vfs_context_thread(ctx)));
+ nofp = NULL;
+ if (!error)
+ goto restart;
+ }
+ if (error) {
+ NP(np, "nfs_vnop_advlock: no open file %d, %d", error, kauth_cred_getuid(noop->noo_cred));
+ goto out;
+ }
+ if (op == F_UNLCK) {
+ error = nfs_advlock_unlock(np, nofp, nlop, start, end, style, ctx);
+ } else if ((op == F_SETLK) || (op == F_SETLKW)) {
+ if ((op == F_SETLK) && (flags & F_WAIT))
+ op = F_SETLKW;
+ error = nfs_advlock_setlock(np, nofp, nlop, op, start, end, style, fl->l_type, ctx);
+ } else {
+ /* not getlk, unlock or lock? */
+ error = EINVAL;
+ }
+ }
+
+out:
+ if (nlop)
+ nfs_lock_owner_rele(nlop);
+ if (noop)
+ nfs_open_owner_rele(noop);
+ return (error);
+}
+
+/*
+ * Check if an open owner holds any locks on a file.
+ */
+int
+nfs_check_for_locks(struct nfs_open_owner *noop, struct nfs_open_file *nofp)
+{
+ struct nfs_lock_owner *nlop;
+
+ TAILQ_FOREACH(nlop, &nofp->nof_np->n_lock_owners, nlo_link) {
+ if (nlop->nlo_open_owner != noop)
+ continue;
+ if (!TAILQ_EMPTY(&nlop->nlo_locks))
+ break;
+ }
+ return (nlop ? 1 : 0);
+}
+
+/*
+ * Reopen simple (no deny, no locks) open state that was lost.
+ */
+int
+nfs4_reopen(struct nfs_open_file *nofp, thread_t thd)
+{
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfsmount *nmp = NFSTONMP(nofp->nof_np);
+ nfsnode_t np = nofp->nof_np;
+ vnode_t vp = NFSTOV(np);
+ vnode_t dvp = NULL;
+ struct componentname cn;
+ const char *vname = NULL;
+ const char *name = NULL;
+ size_t namelen;
+ char smallname[128];
+ char *filename = NULL;
+ int error = 0, done = 0, slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
+ struct timespec ts = { 1, 0 };
+
+ lck_mtx_lock(&nofp->nof_lock);
+ while (nofp->nof_flags & NFS_OPEN_FILE_REOPENING) {
+ if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
+ break;
+ msleep(&nofp->nof_flags, &nofp->nof_lock, slpflag|(PZERO-1), "nfsreopenwait", &ts);
+ slpflag = 0;
+ }
+ if (error || !(nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ lck_mtx_unlock(&nofp->nof_lock);
+ return (error);
+ }
+ nofp->nof_flags |= NFS_OPEN_FILE_REOPENING;
+ lck_mtx_unlock(&nofp->nof_lock);
+
+ nfs_node_lock_force(np);
+ if ((vnode_vtype(vp) != VDIR) && np->n_sillyrename) {
+ /*
+ * The node's been sillyrenamed, so we need to use
+ * the sillyrename directory/name to do the open.
+ */
+ struct nfs_sillyrename *nsp = np->n_sillyrename;
+ dvp = NFSTOV(nsp->nsr_dnp);
+ if ((error = vnode_get(dvp))) {
+ nfs_node_unlock(np);
+ goto out;
+ }
+ name = nsp->nsr_name;
+ } else {
+ /*
+ * [sigh] We can't trust VFS to get the parent right for named
+ * attribute nodes. (It likes to reparent the nodes after we've
+ * created them.) Luckily we can probably get the right parent
+ * from the n_parent we have stashed away.
+ */
+ if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
+ (((dvp = np->n_parent)) && (error = vnode_get(dvp))))
+ dvp = NULL;
+ if (!dvp)
+ dvp = vnode_getparent(vp);
+ vname = vnode_getname(vp);
+ if (!dvp || !vname) {
+ if (!error)
+ error = EIO;
+ nfs_node_unlock(np);
+ goto out;
+ }
+ name = vname;
+ }
+ filename = &smallname[0];
+ namelen = snprintf(filename, sizeof(smallname), "%s", name);
+ if (namelen >= sizeof(smallname)) {
+ MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
+ if (!filename) {
+ error = ENOMEM;
+ goto out;
+ }
+ snprintf(filename, namelen+1, "%s", name);
+ }
+ nfs_node_unlock(np);
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = filename;
+ cn.cn_namelen = namelen;
+
+restart:
+ done = 0;
+ if ((error = nfs_mount_state_in_use_start(nmp, thd)))
+ goto out;
+
+ if (nofp->nof_rw)
+ error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE);
+ if (!error && nofp->nof_w)
+ error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE);
+ if (!error && nofp->nof_r)
+ error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE);
+
+ if (nfs_mount_state_in_use_end(nmp, error)) {
+ if (error == NFSERR_GRACE)
+ goto restart;
+ printf("nfs4_reopen: RPC failed, error %d, lost %d, %s\n", error,
+ (nofp->nof_flags & NFS_OPEN_FILE_LOST) ? 1 : 0, name ? name : "???");
+ error = 0;
+ goto out;
+ }
+ done = 1;
+out:
+ if (error && (error != EINTR) && (error != ERESTART))
+ nfs_revoke_open_state_for_node(np);
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_flags &= ~NFS_OPEN_FILE_REOPENING;
+ if (done)
+ nofp->nof_flags &= ~NFS_OPEN_FILE_REOPEN;
+ else if (error)
+ printf("nfs4_reopen: failed, error %d, lost %d, %s\n", error,
+ (nofp->nof_flags & NFS_OPEN_FILE_LOST) ? 1 : 0, name ? name : "???");
+ lck_mtx_unlock(&nofp->nof_lock);
+ if (filename && (filename != &smallname[0]))
+ FREE(filename, M_TEMP);
+ if (vname)
+ vnode_putname(vname);
+ if (dvp != NULLVP)
+ vnode_put(dvp);
+ return (error);
+}
+
+/*
+ * Send a normal OPEN RPC to open/create a file.
+ */
+int
+nfs4_open_rpc(
+ struct nfs_open_file *nofp,
+ vfs_context_t ctx,
+ struct componentname *cnp,
+ struct vnode_attr *vap,
+ vnode_t dvp,
+ vnode_t *vpp,
+ int create,
+ int share_access,
+ int share_deny)
+{
+ return (nfs4_open_rpc_internal(nofp, ctx, vfs_context_thread(ctx), vfs_context_ucred(ctx),
+ cnp, vap, dvp, vpp, create, share_access, share_deny));
+}
+
+/*
+ * Send an OPEN RPC to reopen a file.
+ */
+int
+nfs4_open_reopen_rpc(
+ struct nfs_open_file *nofp,
+ thread_t thd,
+ kauth_cred_t cred,
+ struct componentname *cnp,
+ vnode_t dvp,
+ vnode_t *vpp,
+ int share_access,
+ int share_deny)
+{
+ return (nfs4_open_rpc_internal(nofp, NULL, thd, cred, cnp, NULL, dvp, vpp, NFS_OPEN_NOCREATE, share_access, share_deny));
+}
+
+/*
+ * Send an OPEN_CONFIRM RPC to confirm an OPEN.
+ */
+int
+nfs4_open_confirm_rpc(
+ struct nfsmount *nmp,
+ nfsnode_t dnp,
+ u_char *fhp,
+ int fhlen,
+ struct nfs_open_owner *noop,
+ nfs_stateid *sid,
+ thread_t thd,
+ kauth_cred_t cred,
+ struct nfs_vattr *nvap,
+ uint64_t *xidp)
+{
+ struct nfsm_chain nmreq, nmrep;
+ int error = 0, status, numops;
+ struct nfsreq_secinfo_args si;
+
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, OPEN_CONFIRM, GETATTR
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "open_confirm", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, fhp, fhlen);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN_CONFIRM);
+ nfsm_chain_add_stateid(error, &nmreq, sid);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, R_NOINTR, &nmrep, xidp, &status);
+
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN_CONFIRM);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, sid);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/*
+ * common OPEN RPC code
+ *
+ * If create is set, ctx must be passed in.
+ * Returns a node on success if no node passed in.
+ */
+int
+nfs4_open_rpc_internal(
+ struct nfs_open_file *nofp,
+ vfs_context_t ctx,
+ thread_t thd,
+ kauth_cred_t cred,
+ struct componentname *cnp,
+ struct vnode_attr *vap,
+ vnode_t dvp,
+ vnode_t *vpp,
+ int create,
+ int share_access,
+ int share_deny)
+{
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfs_vattr nvattr;
+ int error = 0, open_error = EIO, lockerror = ENOENT, busyerror = ENOENT, status;
+ int nfsvers, namedattrs, numops, exclusive = 0, gotuid, gotgid;
+ u_int64_t xid, savedxid = 0;
+ nfsnode_t dnp = VTONFS(dvp);
+ nfsnode_t np, newnp = NULL;
+ vnode_t newvp = NULL;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
+ uint32_t rflags, delegation, recall;
+ struct nfs_stateid stateid, dstateid, *sid;
+ fhandle_t fh;
+ struct nfsreq rq, *req = &rq;
+ struct nfs_dulookup dul;
+ char sbuf[64], *s;
+ uint32_t ace_type, ace_flags, ace_mask, len, slen;
+ struct kauth_ace ace;
+ struct nfsreq_secinfo_args si;
+
+ if (create && !ctx)
+ return (EINVAL);
+
+ nmp = VTONMP(dvp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+ namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
+ if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+
+ np = *vpp ? VTONFS(*vpp) : NULL;
+ if (create && vap) {
+ exclusive = (vap->va_vaflags & VA_EXCLUSIVE);
+ nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
+ gotuid = VATTR_IS_ACTIVE(vap, va_uid);
+ gotgid = VATTR_IS_ACTIVE(vap, va_gid);
+ if (exclusive && (!VATTR_IS_ACTIVE(vap, va_access_time) || !VATTR_IS_ACTIVE(vap, va_modify_time)))
+ vap->va_vaflags |= VA_UTIMES_NULL;
+ } else {
+ exclusive = gotuid = gotgid = 0;
+ }
+ if (nofp) {
+ sid = &nofp->nof_stateid;
+ } else {
+ stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
+ sid = &stateid;
+ }
+
+ if ((error = nfs_open_owner_set_busy(noop, thd)))
+ return (error);
+again:
+ rflags = delegation = recall = 0;
+ ace.ace_flags = 0;
+ s = sbuf;
+ slen = sizeof(sbuf);
+ NVATTR_INIT(&nvattr);
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, cnp->cn_nameptr, cnp->cn_namelen);
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, SAVEFH, OPEN(CREATE?), GETATTR(FH), RESTOREFH, GETATTR
+ numops = 6;
+ nfsm_chain_build_alloc_init(error, &nmreq, 53 * NFSX_UNSIGNED + cnp->cn_namelen);
+ nfsm_chain_add_compound_header(error, &nmreq, create ? "create" : "open", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_32(error, &nmreq, share_access);
+ nfsm_chain_add_32(error, &nmreq, share_deny);
+ nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
+ nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred));
+ nfsm_chain_add_32(error, &nmreq, create);
+ if (create) {
+ if (exclusive) {
+ static uint32_t create_verf; // XXX need a better verifier
+ create_verf++;
+ nfsm_chain_add_32(error, &nmreq, NFS_CREATE_EXCLUSIVE);
+ /* insert 64 bit verifier */
+ nfsm_chain_add_32(error, &nmreq, create_verf);
+ nfsm_chain_add_32(error, &nmreq, create_verf);
+ } else {
+ nfsm_chain_add_32(error, &nmreq, NFS_CREATE_UNCHECKED);
+ nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
+ }
+ }
+ nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_NULL);
+ nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ if (!error)
+ error = busyerror = nfs_node_set_busy(dnp, thd);
+ nfsmout_if(error);
+
+ if (create && !namedattrs)
+ nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
+
+ error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, R_NOINTR, NULL, &req);
+ if (!error) {
+ if (create && !namedattrs)
+ nfs_dulookup_start(&dul, dnp, ctx);
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ savedxid = xid;
+ }
+
+ if (create && !namedattrs)
+ nfs_dulookup_finish(&dul, dnp, ctx);
+
+ if ((lockerror = nfs_node_lock(dnp)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, sid);
+ nfsm_chain_check_change_info(error, &nmrep, dnp);
+ nfsm_chain_get_32(error, &nmrep, rflags);
+ bmlen = NFS_ATTR_BITMAP_LEN;
+ nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
+ nfsm_chain_get_32(error, &nmrep, delegation);
+ if (!error)
+ switch (delegation) {
+ case NFS_OPEN_DELEGATE_NONE:
+ break;
+ case NFS_OPEN_DELEGATE_READ:
+ case NFS_OPEN_DELEGATE_WRITE:
+ nfsm_chain_get_stateid(error, &nmrep, &dstateid);
+ nfsm_chain_get_32(error, &nmrep, recall);
+ if (delegation == NFS_OPEN_DELEGATE_WRITE) // space (skip) XXX
+ nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
+ /* if we have any trouble accepting the ACE, just invalidate it */
+ ace_type = ace_flags = ace_mask = len = 0;
+ nfsm_chain_get_32(error, &nmrep, ace_type);
+ nfsm_chain_get_32(error, &nmrep, ace_flags);
+ nfsm_chain_get_32(error, &nmrep, ace_mask);
+ nfsm_chain_get_32(error, &nmrep, len);
+ ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
+ ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
+ ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
+ if (!error && (len >= slen)) {
+ MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
+ if (s)
+ slen = len+1;
+ else
+ ace.ace_flags = 0;
+ }
+ if (s)
+ nfsm_chain_get_opaque(error, &nmrep, len, s);
+ else
+ nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
+ if (!error && s) {
+ s[len] = '\0';
+ if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
+ ace.ace_flags = 0;
+ }
+ if (error || !s)
+ ace.ace_flags = 0;
+ if (s && (s != sbuf))
+ FREE(s, M_TEMP);
+ break;
+ default:
+ error = EBADRPC;
+ break;
+ }
+ /* At this point if we have no error, the object was created/opened. */
+ open_error = error;
+ nfsmout_if(error);
+ if (create && vap && !exclusive)
+ nfs_vattr_set_supported(bitmap, vap);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ printf("nfs: open/create didn't return filehandle? %s\n", cnp->cn_nameptr);
+ error = EBADRPC;
+ goto nfsmout;
+ }
+ if (!create && np && !NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
+ // XXX for the open case, what if fh doesn't match the vnode we think we're opening?
+ // Solaris Named Attributes may do this due to a bug.... so don't warn for named attributes.
+ if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ NP(np, "nfs4_open_rpc: warning: file handle mismatch");
+ }
+ /* directory attributes: if we don't get them, make sure to invalidate */
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
+ if (error)
+ NATTRINVALIDATE(dnp);
+ nfsmout_if(error);
+
+ if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
+ nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+
+ if (rflags & NFS_OPEN_RESULT_CONFIRM) {
+ nfs_node_unlock(dnp);
+ lockerror = ENOENT;
+ NVATTR_CLEANUP(&nvattr);
+ error = nfs4_open_confirm_rpc(nmp, dnp, fh.fh_data, fh.fh_len, noop, sid, thd, cred, &nvattr, &xid);
+ nfsmout_if(error);
+ savedxid = xid;
+ if ((lockerror = nfs_node_lock(dnp)))
+ error = lockerror;
+ }
+
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+
+ if (!lockerror && create) {
+ if (!open_error && (dnp->n_flag & NNEGNCENTRIES)) {
+ dnp->n_flag &= ~NNEGNCENTRIES;
+ cache_purge_negatives(dvp);
+ }
+ dnp->n_flag |= NMODIFIED;
+ nfs_node_unlock(dnp);
+ lockerror = ENOENT;
+ nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
+ }
+ if (!lockerror)
+ nfs_node_unlock(dnp);
+ if (!error && !np && fh.fh_len) {
+ /* create the vnode with the filehandle and attributes */
+ xid = savedxid;
+ error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &newnp);
+ if (!error)
+ newvp = NFSTOV(newnp);
+ }
+ NVATTR_CLEANUP(&nvattr);
+ if (!busyerror)
+ nfs_node_clear_busy(dnp);
+ if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
+ if (!np)
+ np = newnp;
+ if (!error && np && !recall) {
+ /* stuff the delegation state in the node */
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~N_DELEG_MASK;
+ np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ np->n_dstateid = dstateid;
+ np->n_dace = ace;
+ if (np->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ } else {
+ /* give the delegation back */
+ if (np) {
+ if (NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
+ /* update delegation state and return it */
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~N_DELEG_MASK;
+ np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ np->n_dstateid = dstateid;
+ np->n_dace = ace;
+ if (np->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ /* don't need to send a separate delegreturn for fh */
+ fh.fh_len = 0;
+ }
+ /* return np's current delegation */
+ nfs4_delegation_return(np, 0, thd, cred);
+ }
+ if (fh.fh_len) /* return fh's delegation if it wasn't for np */
+ nfs4_delegreturn_rpc(nmp, fh.fh_data, fh.fh_len, &dstateid, 0, thd, cred);
+ }
+ }
+ if (error) {
+ if (exclusive && (error == NFSERR_NOTSUPP)) {
+ exclusive = 0;
+ goto again;
+ }
+ if (newvp) {
+ nfs_node_unlock(newnp);
+ vnode_put(newvp);
+ }
+ } else if (create) {
+ nfs_node_unlock(newnp);
+ if (exclusive) {
+ error = nfs4_setattr_rpc(newnp, vap, ctx);
+ if (error && (gotuid || gotgid)) {
+ /* it's possible the server didn't like our attempt to set IDs. */
+ /* so, let's try it again without those */
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+ error = nfs4_setattr_rpc(newnp, vap, ctx);
+ }
+ }
+ if (error)
+ vnode_put(newvp);
+ else
+ *vpp = newvp;
+ }
+ nfs_open_owner_clear_busy(noop);
+ return (error);
+}
+
+
+/*
+ * Send an OPEN RPC to claim a delegated open for a file
+ */
+int
+nfs4_claim_delegated_open_rpc(
+ struct nfs_open_file *nofp,
+ int share_access,
+ int share_deny,
+ int flags)
+{
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfs_vattr nvattr;
+ int error = 0, lockerror = ENOENT, status;
+ int nfsvers, numops;
+ u_int64_t xid;
+ nfsnode_t np = nofp->nof_np;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
+ uint32_t rflags = 0, delegation, recall = 0;
+ fhandle_t fh;
+ struct nfs_stateid dstateid;
+ char sbuf[64], *s = sbuf;
+ uint32_t ace_type, ace_flags, ace_mask, len, slen = sizeof(sbuf);
+ struct kauth_ace ace;
+ vnode_t dvp = NULL;
+ const char *vname = NULL;
+ const char *name = NULL;
+ size_t namelen;
+ char smallname[128];
+ char *filename = NULL;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ nfs_node_lock_force(np);
+ if ((vnode_vtype(NFSTOV(np)) != VDIR) && np->n_sillyrename) {
+ /*
+ * The node's been sillyrenamed, so we need to use
+ * the sillyrename directory/name to do the open.
+ */
+ struct nfs_sillyrename *nsp = np->n_sillyrename;
+ dvp = NFSTOV(nsp->nsr_dnp);
+ if ((error = vnode_get(dvp))) {
+ nfs_node_unlock(np);
+ goto out;
+ }
+ name = nsp->nsr_name;
+ } else {
+ /*
+ * [sigh] We can't trust VFS to get the parent right for named
+ * attribute nodes. (It likes to reparent the nodes after we've
+ * created them.) Luckily we can probably get the right parent
+ * from the n_parent we have stashed away.
+ */
+ if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
+ (((dvp = np->n_parent)) && (error = vnode_get(dvp))))
+ dvp = NULL;
+ if (!dvp)
+ dvp = vnode_getparent(NFSTOV(np));
+ vname = vnode_getname(NFSTOV(np));
+ if (!dvp || !vname) {
+ if (!error)
+ error = EIO;
+ nfs_node_unlock(np);
+ goto out;
+ }
+ name = vname;
+ }
+ filename = &smallname[0];
+ namelen = snprintf(filename, sizeof(smallname), "%s", name);
+ if (namelen >= sizeof(smallname)) {
+ MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
+ if (!filename) {
+ error = ENOMEM;
+ nfs_node_unlock(np);
+ goto out;
+ }
+ snprintf(filename, namelen+1, "%s", name);
+ }
+ nfs_node_unlock(np);
+
+ if ((error = nfs_open_owner_set_busy(noop, NULL)))
+ goto out;
+ NVATTR_INIT(&nvattr);
+ delegation = NFS_OPEN_DELEGATE_NONE;
+ dstateid = np->n_dstateid;
+ NFSREQ_SECINFO_SET(&si, VTONFS(dvp), NULL, 0, filename, namelen);
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, OPEN, GETATTR(FH)
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 48 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "open_claim_d", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, VTONFS(dvp)->n_fhp, VTONFS(dvp)->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_32(error, &nmreq, share_access);
+ nfsm_chain_add_32(error, &nmreq, share_deny);
+ // open owner: clientid + uid
+ nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid); // open_owner4.clientid
+ nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred)); // open_owner4.owner
+ // openflag4
+ nfsm_chain_add_32(error, &nmreq, NFS_OPEN_NOCREATE);
+ // open_claim4
+ nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_DELEGATE_CUR);
+ nfsm_chain_add_stateid(error, &nmreq, &np->n_dstateid);
+ nfsm_chain_add_name(error, &nmreq, filename, namelen, nmp);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request2(np, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, current_thread(),
+ noop->noo_cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
+ nfsm_chain_check_change_info(error, &nmrep, np);
+ nfsm_chain_get_32(error, &nmrep, rflags);
+ bmlen = NFS_ATTR_BITMAP_LEN;
+ nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
+ nfsm_chain_get_32(error, &nmrep, delegation);
+ if (!error)
+ switch (delegation) {
+ case NFS_OPEN_DELEGATE_NONE:
+ // if (!(np->n_openflags & N_DELEG_RETURN)) /* don't warn if delegation is being returned */
+ // printf("nfs: open delegated claim didn't return a delegation %s\n", filename ? filename : "???");
+ break;
+ case NFS_OPEN_DELEGATE_READ:
+ case NFS_OPEN_DELEGATE_WRITE:
+ if ((((np->n_openflags & N_DELEG_MASK) == N_DELEG_READ) &&
+ (delegation == NFS_OPEN_DELEGATE_WRITE)) ||
+ (((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) &&
+ (delegation == NFS_OPEN_DELEGATE_READ)))
+ printf("nfs: open delegated claim returned a different delegation type! have %s got %s %s\n",
+ ((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) ? "W" : "R",
+ (delegation == NFS_OPEN_DELEGATE_WRITE) ? "W" : "R", filename ? filename : "???");
+ nfsm_chain_get_stateid(error, &nmrep, &dstateid);
+ nfsm_chain_get_32(error, &nmrep, recall);
+ if (delegation == NFS_OPEN_DELEGATE_WRITE) // space (skip) XXX
+ nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
+ /* if we have any trouble accepting the ACE, just invalidate it */
+ ace_type = ace_flags = ace_mask = len = 0;
+ nfsm_chain_get_32(error, &nmrep, ace_type);
+ nfsm_chain_get_32(error, &nmrep, ace_flags);
+ nfsm_chain_get_32(error, &nmrep, ace_mask);
+ nfsm_chain_get_32(error, &nmrep, len);
+ ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
+ ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
+ ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
+ if (!error && (len >= slen)) {
+ MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
+ if (s)
+ slen = len+1;
+ else
+ ace.ace_flags = 0;
+ }
+ if (s)
+ nfsm_chain_get_opaque(error, &nmrep, len, s);
+ else
+ nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
+ if (!error && s) {
+ s[len] = '\0';
+ if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
+ ace.ace_flags = 0;
+ }
+ if (error || !s)
+ ace.ace_flags = 0;
+ if (s && (s != sbuf))
+ FREE(s, M_TEMP);
+ if (!error) {
+ /* stuff the latest delegation state in the node */
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~N_DELEG_MASK;
+ np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ np->n_dstateid = dstateid;
+ np->n_dace = ace;
+ if (np->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ }
+ break;
+ default:
+ error = EBADRPC;
+ break;
+ }
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ printf("nfs: open reclaim didn't return filehandle? %s\n", filename ? filename : "???");
+ error = EBADRPC;
+ goto nfsmout;
+ }
+ if (!NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
+ // XXX what if fh doesn't match the vnode we think we're re-opening?
+ // Solaris Named Attributes may do this due to a bug.... so don't warn for named attributes.
+ if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ printf("nfs4_claim_delegated_open_rpc: warning: file handle mismatch %s\n", filename ? filename : "???");
+ }
+ error = nfs_loadattrcache(np, &nvattr, &xid, 1);
+ nfsmout_if(error);
+ if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
+ nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+nfsmout:
+ NVATTR_CLEANUP(&nvattr);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_open_owner_clear_busy(noop);
+ if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
+ if (recall) {
+ /*
+ * We're making a delegated claim.
+ * Don't return the delegation here in case we have more to claim.
+ * Just make sure it's queued up to be returned.
+ */
+ nfs4_delegation_return_enqueue(np);
+ }
+ }
+out:
+ // if (!error)
+ // printf("nfs: open claim delegated (%d, %d) succeeded for %s\n", share_access, share_deny, filename ? filename : "???");
+ if (filename && (filename != &smallname[0]))
+ FREE(filename, M_TEMP);
+ if (vname)
+ vnode_putname(vname);
+ if (dvp != NULLVP)
+ vnode_put(dvp);
+ return (error);
+}
+
+/*
+ * Send an OPEN RPC to reclaim an open file.
+ */
+int
+nfs4_open_reclaim_rpc(
+ struct nfs_open_file *nofp,
+ int share_access,
+ int share_deny)
+{
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfs_vattr nvattr;
+ int error = 0, lockerror = ENOENT, status;
+ int nfsvers, numops;
+ u_int64_t xid;
+ nfsnode_t np = nofp->nof_np;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
+ uint32_t rflags = 0, delegation, recall = 0;
+ fhandle_t fh;
+ struct nfs_stateid dstateid;
+ char sbuf[64], *s = sbuf;
+ uint32_t ace_type, ace_flags, ace_mask, len, slen = sizeof(sbuf);
+ struct kauth_ace ace;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ if ((error = nfs_open_owner_set_busy(noop, NULL)))
+ return (error);
+
+ NVATTR_INIT(&nvattr);
+ delegation = NFS_OPEN_DELEGATE_NONE;
+ dstateid = np->n_dstateid;
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, OPEN, GETATTR(FH)
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 48 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "open_reclaim", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_32(error, &nmreq, share_access);
+ nfsm_chain_add_32(error, &nmreq, share_deny);
+ // open owner: clientid + uid
+ nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid); // open_owner4.clientid
+ nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred)); // open_owner4.owner
+ // openflag4
+ nfsm_chain_add_32(error, &nmreq, NFS_OPEN_NOCREATE);
+ // open_claim4
+ nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_PREVIOUS);
+ delegation = (np->n_openflags & N_DELEG_READ) ? NFS_OPEN_DELEGATE_READ :
+ (np->n_openflags & N_DELEG_WRITE) ? NFS_OPEN_DELEGATE_WRITE :
+ NFS_OPEN_DELEGATE_NONE;
+ nfsm_chain_add_32(error, &nmreq, delegation);
+ delegation = NFS_OPEN_DELEGATE_NONE;
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request2(np, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, current_thread(),
+ noop->noo_cred, &si, R_RECOVER|R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
+ nfsm_chain_check_change_info(error, &nmrep, np);
+ nfsm_chain_get_32(error, &nmrep, rflags);
+ bmlen = NFS_ATTR_BITMAP_LEN;
+ nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
+ nfsm_chain_get_32(error, &nmrep, delegation);
+ if (!error)
+ switch (delegation) {
+ case NFS_OPEN_DELEGATE_NONE:
+ if (np->n_openflags & N_DELEG_MASK) {
+ /*
+ * Hey! We were supposed to get our delegation back even
+ * if it was getting immediately recalled. Bad server!
+ *
+ * Just try to return the existing delegation.
+ */
+ // NP(np, "nfs: open reclaim didn't return delegation?");
+ delegation = (np->n_openflags & N_DELEG_WRITE) ? NFS_OPEN_DELEGATE_WRITE : NFS_OPEN_DELEGATE_READ;
+ recall = 1;
+ }
+ break;
+ case NFS_OPEN_DELEGATE_READ:
+ case NFS_OPEN_DELEGATE_WRITE:
+ nfsm_chain_get_stateid(error, &nmrep, &dstateid);
+ nfsm_chain_get_32(error, &nmrep, recall);
+ if (delegation == NFS_OPEN_DELEGATE_WRITE) // space (skip) XXX
+ nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
+ /* if we have any trouble accepting the ACE, just invalidate it */
+ ace_type = ace_flags = ace_mask = len = 0;
+ nfsm_chain_get_32(error, &nmrep, ace_type);
+ nfsm_chain_get_32(error, &nmrep, ace_flags);
+ nfsm_chain_get_32(error, &nmrep, ace_mask);
+ nfsm_chain_get_32(error, &nmrep, len);
+ ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
+ ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
+ ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
+ if (!error && (len >= slen)) {
+ MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
+ if (s)
+ slen = len+1;
+ else
+ ace.ace_flags = 0;
+ }
+ if (s)
+ nfsm_chain_get_opaque(error, &nmrep, len, s);
+ else
+ nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
+ if (!error && s) {
+ s[len] = '\0';
+ if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
+ ace.ace_flags = 0;
+ }
+ if (error || !s)
+ ace.ace_flags = 0;
+ if (s && (s != sbuf))
+ FREE(s, M_TEMP);
+ if (!error) {
+ /* stuff the delegation state in the node */
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~N_DELEG_MASK;
+ np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ np->n_dstateid = dstateid;
+ np->n_dace = ace;
+ if (np->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ }
+ break;
+ default:
+ error = EBADRPC;
+ break;
+ }
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ NP(np, "nfs: open reclaim didn't return filehandle?");
+ error = EBADRPC;
+ goto nfsmout;
+ }
+ if (!NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
+ // XXX what if fh doesn't match the vnode we think we're re-opening?
+ // That should be pretty hard in this case, given that we are doing
+ // the open reclaim using the file handle (and not a dir/name pair).
+ // Solaris Named Attributes may do this due to a bug.... so don't warn for named attributes.
+ if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ NP(np, "nfs4_open_reclaim_rpc: warning: file handle mismatch");
+ }
+ error = nfs_loadattrcache(np, &nvattr, &xid, 1);
+ nfsmout_if(error);
+ if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
+ nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+nfsmout:
+ // if (!error)
+ // NP(np, "nfs: open reclaim (%d, %d) succeeded", share_access, share_deny);
+ NVATTR_CLEANUP(&nvattr);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_open_owner_clear_busy(noop);
+ if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
+ if (recall)
+ nfs4_delegation_return_enqueue(np);
+ }
+ return (error);
+}
+
+int
+nfs4_open_downgrade_rpc(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ vfs_context_t ctx)
+{
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfsmount *nmp;
+ int error, lockerror = ENOENT, status, nfsvers, numops;
+ struct nfsm_chain nmreq, nmrep;
+ u_int64_t xid;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ if ((error = nfs_open_owner_set_busy(noop, NULL)))
+ return (error);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, OPEN_DOWNGRADE, GETATTR
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "open_downgrd", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN_DOWNGRADE);
+ nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_32(error, &nmreq, nofp->nof_access);
+ nfsm_chain_add_32(error, &nmreq, nofp->nof_deny);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx),
+ &si, R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN_DOWNGRADE);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
+nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_open_owner_clear_busy(noop);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+int
+nfs4_close_rpc(
+ nfsnode_t np,
+ struct nfs_open_file *nofp,
+ thread_t thd,
+ kauth_cred_t cred,
+ int flags)
+{
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfsmount *nmp;
+ int error, lockerror = ENOENT, status, nfsvers, numops;
+ struct nfsm_chain nmreq, nmrep;
+ u_int64_t xid;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ if ((error = nfs_open_owner_set_busy(noop, NULL)))
+ return (error);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, CLOSE, GETATTR
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "close", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_CLOSE);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
+
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_CLOSE);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
+nfsmout:
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfs_open_owner_clear_busy(noop);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+
+/*
+ * Claim the delegated open combinations this open file holds.
+ */
+int
+nfs4_claim_delegated_state_for_open_file(struct nfs_open_file *nofp, int flags)
+{
+ struct nfs_open_owner *noop = nofp->nof_owner;
+ struct nfs_lock_owner *nlop;
+ struct nfs_file_lock *nflp, *nextnflp;
+ struct nfsmount *nmp;
+ int error = 0, reopen = 0;
+
+ if (nofp->nof_d_rw_drw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_BOTH, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_rw_drw += nofp->nof_d_rw_drw;
+ nofp->nof_d_rw_drw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if (!error && nofp->nof_d_w_drw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_BOTH, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_w_drw += nofp->nof_d_w_drw;
+ nofp->nof_d_w_drw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if (!error && nofp->nof_d_r_drw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_BOTH, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_r_drw += nofp->nof_d_r_drw;
+ nofp->nof_d_r_drw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if (!error && nofp->nof_d_rw_dw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_WRITE, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_rw_dw += nofp->nof_d_rw_dw;
+ nofp->nof_d_rw_dw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if (!error && nofp->nof_d_w_dw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_WRITE, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_w_dw += nofp->nof_d_w_dw;
+ nofp->nof_d_w_dw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if (!error && nofp->nof_d_r_dw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_WRITE, flags);
+ if (!error) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_r_dw += nofp->nof_d_r_dw;
+ nofp->nof_d_r_dw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ /* non-deny-mode opens may be reopened if no locks are held */
+ if (!error && nofp->nof_d_rw) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE, flags);
+ /* for some errors, we should just try reopening the file */
+ if (nfs_mount_state_error_delegation_lost(error))
+ reopen = error;
+ if (!error || reopen) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_rw += nofp->nof_d_rw;
+ nofp->nof_d_rw = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ /* if we've already set reopen, we should move these other two opens from delegated to not delegated */
+ if ((!error || reopen) && nofp->nof_d_w) {
+ if (!error) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE, flags);
+ /* for some errors, we should just try reopening the file */
+ if (nfs_mount_state_error_delegation_lost(error))
+ reopen = error;
+ }
+ if (!error || reopen) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_w += nofp->nof_d_w;
+ nofp->nof_d_w = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+ if ((!error || reopen) && nofp->nof_d_r) {
+ if (!error) {
+ error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, flags);
+ /* for some errors, we should just try reopening the file */
+ if (nfs_mount_state_error_delegation_lost(error))
+ reopen = error;
+ }
+ if (!error || reopen) {
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_r += nofp->nof_d_r;
+ nofp->nof_d_r = 0;
+ lck_mtx_unlock(&nofp->nof_lock);
+ }
+ }
+
+ if (reopen) {
+ /*
+ * Any problems with the delegation probably indicates that we
+ * should review/return all of our current delegation state.
+ */
+ if ((nmp = NFSTONMP(nofp->nof_np))) {
+ nfs4_delegation_return_enqueue(nofp->nof_np);
+ lck_mtx_lock(&nmp->nm_lock);
+ nfs_need_recover(nmp, NFSERR_EXPIRED);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ if (reopen && (nfs_check_for_locks(noop, nofp) == 0)) {
+ /* just reopen the file on next access */
+ NP(nofp->nof_np, "nfs4_claim_delegated_state_for_open_file: %d, need reopen, %d",
+ reopen, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_flags |= NFS_OPEN_FILE_REOPEN;
+ lck_mtx_unlock(&nofp->nof_lock);
+ return (0);
+ }
+ if (reopen)
+ NP(nofp->nof_np, "nfs4_claim_delegated_state_for_open_file: %d, locks prevent reopen, %d",
+ reopen, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ }
+
+ if (!error && ((nmp = NFSTONMP(nofp->nof_np)))) {
+ /* claim delegated locks */
+ TAILQ_FOREACH(nlop, &nofp->nof_np->n_lock_owners, nlo_link) {
+ if (nlop->nlo_open_owner != noop)
+ continue;
+ TAILQ_FOREACH_SAFE(nflp, &nlop->nlo_locks, nfl_lolink, nextnflp) {
+ /* skip dead & blocked lock requests (shouldn't be any in the held lock list) */
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_DEAD|NFS_FILE_LOCK_BLOCKED))
+ continue;
+ /* skip non-delegated locks */
+ if (!(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED))
+ continue;
+ error = nmp->nm_funcs->nf_setlock_rpc(nofp->nof_np, nofp, nflp, 0, flags, current_thread(), noop->noo_cred);
+ if (error) {
+ NP(nofp->nof_np, "nfs: delegated lock claim (0x%llx, 0x%llx) failed %d, %d",
+ nflp->nfl_start, nflp->nfl_end, error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ break;
+ }
+ // else {
+ // NP(nofp->nof_np, "nfs: delegated lock claim (0x%llx, 0x%llx) succeeded, %d",
+ // nflp->nfl_start, nflp->nfl_end, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ // }
+ }
+ if (error)
+ break;
+ }
+ }
+
+ if (!error) /* all state claimed successfully! */
+ return (0);
+
+ /* restart if it looks like a problem more than just losing the delegation */
+ if (!nfs_mount_state_error_delegation_lost(error) &&
+ ((error == ETIMEDOUT) || nfs_mount_state_error_should_restart(error))) {
+ NP(nofp->nof_np, "nfs delegated lock claim error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+ if ((error == ETIMEDOUT) && ((nmp = NFSTONMP(nofp->nof_np))))
+ nfs_need_reconnect(nmp);
+ return (error);
+ }
+
+ /* delegated state lost (once held but now not claimable) */
+ NP(nofp->nof_np, "nfs delegated state claim error %d, state lost, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
+
+ /*
+ * Any problems with the delegation probably indicates that we
+ * should review/return all of our current delegation state.
+ */
+ if ((nmp = NFSTONMP(nofp->nof_np))) {
+ nfs4_delegation_return_enqueue(nofp->nof_np);
+ lck_mtx_lock(&nmp->nm_lock);
+ nfs_need_recover(nmp, NFSERR_EXPIRED);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ /* revoke all open file state */
+ nfs_revoke_open_state_for_node(nofp->nof_np);
+
+ return (error);
+}
+
+/*
+ * Release all open state for the given node.
+ */
+void
+nfs_release_open_state_for_node(nfsnode_t np, int force)
+{
+ struct nfsmount *nmp = NFSTONMP(np);
+ struct nfs_open_file *nofp;
+ struct nfs_file_lock *nflp, *nextnflp;
+
+ /* drop held locks */
+ TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
+ /* skip dead & blocked lock requests */
+ if (nflp->nfl_flags & (NFS_FILE_LOCK_DEAD|NFS_FILE_LOCK_BLOCKED))
+ continue;
+ /* send an unlock if not a delegated lock */
+ if (!force && nmp && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED))
+ nmp->nm_funcs->nf_unlock_rpc(np, nflp->nfl_owner, F_WRLCK, nflp->nfl_start, nflp->nfl_end, R_RECOVER,
+ NULL, nflp->nfl_owner->nlo_open_owner->noo_cred);
+ /* kill/remove the lock */
+ lck_mtx_lock(&np->n_openlock);
+ nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
+ lck_mtx_lock(&nflp->nfl_owner->nlo_lock);
+ TAILQ_REMOVE(&nflp->nfl_owner->nlo_locks, nflp, nfl_lolink);
+ lck_mtx_unlock(&nflp->nfl_owner->nlo_lock);
+ if (nflp->nfl_blockcnt) {
+ /* wake up anyone blocked on this lock */
+ wakeup(nflp);
+ } else {
+ /* remove nflp from lock list and destroy */
+ TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
+ nfs_file_lock_destroy(nflp);
+ }
+ lck_mtx_unlock(&np->n_openlock);
+ }
+
+ lck_mtx_lock(&np->n_openlock);
+
+ /* drop all opens */
+ TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
+ if (nofp->nof_flags & NFS_OPEN_FILE_LOST)
+ continue;
+ /* mark open state as lost */
+ lck_mtx_lock(&nofp->nof_lock);
+ nofp->nof_flags &= ~NFS_OPEN_FILE_REOPEN;
+ nofp->nof_flags |= NFS_OPEN_FILE_LOST;
+
+ lck_mtx_unlock(&nofp->nof_lock);
+ if (!force && nmp && (nmp->nm_vers >= NFS_VER4))
+ nfs4_close_rpc(np, nofp, NULL, nofp->nof_owner->noo_cred, R_RECOVER);
+ }
+
+ lck_mtx_unlock(&np->n_openlock);
+}
+
+/*
+ * State for a node has been lost, drop it, and revoke the node.
+ * Attempt to return any state if possible in case the server
+ * might somehow think we hold it.
+ */
+void
+nfs_revoke_open_state_for_node(nfsnode_t np)
+{
+ struct nfsmount *nmp;
+
+ /* mark node as needing to be revoked */
+ nfs_node_lock_force(np);
+ if (np->n_flag & NREVOKE) /* already revoked? */
+ {
+ NP(np, "nfs_revoke_open_state_for_node(): already revoked");
+ nfs_node_unlock(np);
+ return;
+ }
+ np->n_flag |= NREVOKE;
+ nfs_node_unlock(np);
+
+ nfs_release_open_state_for_node(np, 0);
+ NP(np, "nfs: state lost for %p 0x%x", np, np->n_flag);
+
+ /* mark mount as needing a revoke scan and have the socket thread do it. */
+ if ((nmp = NFSTONMP(np))) {
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state |= NFSSTA_REVOKE;
+ nfs_mount_sock_thread_wake(nmp);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+}
+
+/*
+ * Claim the delegated open combinations that each of this node's open files hold.
+ */
+int
+nfs4_claim_delegated_state_for_node(nfsnode_t np, int flags)
+{
+ struct nfs_open_file *nofp;
+ int error = 0;
+
+ lck_mtx_lock(&np->n_openlock);
+
+ /* walk the open file list looking for opens with delegated state to claim */
+restart:
+ TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
+ if (!nofp->nof_d_rw_drw && !nofp->nof_d_w_drw && !nofp->nof_d_r_drw &&
+ !nofp->nof_d_rw_dw && !nofp->nof_d_w_dw && !nofp->nof_d_r_dw &&
+ !nofp->nof_d_rw && !nofp->nof_d_w && !nofp->nof_d_r)
+ continue;
+ lck_mtx_unlock(&np->n_openlock);
+ error = nfs4_claim_delegated_state_for_open_file(nofp, flags);
+ lck_mtx_lock(&np->n_openlock);
+ if (error)
+ break;
+ goto restart;
+ }
+
+ lck_mtx_unlock(&np->n_openlock);
+
+ return (error);
+}
+
+/*
+ * Mark a node as needed to have its delegation returned.
+ * Queue it up on the delegation return queue.
+ * Make sure the thread is running.
+ */
+void
+nfs4_delegation_return_enqueue(nfsnode_t np)
+{
+ struct nfsmount *nmp;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return;
+
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags |= N_DELEG_RETURN;
+ lck_mtx_unlock(&np->n_openlock);
+
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dreturn.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_dreturnq, np, n_dreturn);
+ nfs_mount_sock_thread_wake(nmp);
+ lck_mtx_unlock(&nmp->nm_lock);
+}
+
+/*
+ * return any delegation we may have for the given node
+ */
+int
+nfs4_delegation_return(nfsnode_t np, int flags, thread_t thd, kauth_cred_t cred)
+{
+ struct nfsmount *nmp;
+ fhandle_t fh;
+ nfs_stateid dstateid;
+ int error;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ /* first, make sure the node's marked for delegation return */
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags |= (N_DELEG_RETURN|N_DELEG_RETURNING);
+ lck_mtx_unlock(&np->n_openlock);
+
+ /* make sure nobody else is using the delegation state */
+ if ((error = nfs_open_state_set_busy(np, NULL)))
+ goto out;
+
+ /* claim any delegated state */
+ if ((error = nfs4_claim_delegated_state_for_node(np, flags)))
+ goto out;
+
+ /* return the delegation */
+ lck_mtx_lock(&np->n_openlock);
+ dstateid = np->n_dstateid;
+ fh.fh_len = np->n_fhsize;
+ bcopy(np->n_fhp, &fh.fh_data, fh.fh_len);
+ lck_mtx_unlock(&np->n_openlock);
+ error = nfs4_delegreturn_rpc(NFSTONMP(np), fh.fh_data, fh.fh_len, &dstateid, flags, thd, cred);
+ /* assume delegation is gone for all errors except ETIMEDOUT, NFSERR_*MOVED */
+ if ((error != ETIMEDOUT) && (error != NFSERR_MOVED) && (error != NFSERR_LEASE_MOVED)) {
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~N_DELEG_MASK;
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dlink.tqe_next != NFSNOLIST) {
+ TAILQ_REMOVE(&nmp->nm_delegations, np, n_dlink);
+ np->n_dlink.tqe_next = NFSNOLIST;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_unlock(&np->n_openlock);
+ }
+
+out:
+ /* make sure it's no longer on the return queue and clear the return flags */
+ lck_mtx_lock(&nmp->nm_lock);
+ if (np->n_dreturn.tqe_next != NFSNOLIST) {
+ TAILQ_REMOVE(&nmp->nm_dreturnq, np, n_dreturn);
+ np->n_dreturn.tqe_next = NFSNOLIST;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_lock(&np->n_openlock);
+ np->n_openflags &= ~(N_DELEG_RETURN|N_DELEG_RETURNING);
+ lck_mtx_unlock(&np->n_openlock);
+
+ if (error) {
+ NP(np, "nfs4_delegation_return, error %d", error);
+ if (error == ETIMEDOUT)
+ nfs_need_reconnect(nmp);
+ if (nfs_mount_state_error_should_restart(error)) {
+ /* make sure recovery happens */
+ lck_mtx_lock(&nmp->nm_lock);
+ nfs_need_recover(nmp, nfs_mount_state_error_delegation_lost(error) ? NFSERR_EXPIRED : 0);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ }
+
+ nfs_open_state_clear_busy(np);
+
+ return (error);
+}
+
+/*
+ * RPC to return a delegation for a file handle
+ */
+int
+nfs4_delegreturn_rpc(struct nfsmount *nmp, u_char *fhp, int fhlen, struct nfs_stateid *sid, int flags, thread_t thd, kauth_cred_t cred)
+{
+ int error = 0, status, numops;
+ uint64_t xid;
+ struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
+
+ NFSREQ_SECINFO_SET(&si, NULL, fhp, fhlen, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, DELEGRETURN
+ numops = 2;
+ nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "delegreturn", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, fhp, fhlen);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_DELEGRETURN);
+ nfsm_chain_add_stateid(error, &nmreq, sid);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_DELEGRETURN);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+
+/*
+ * NFS read call.
+ * Just call nfs_bioread() to do the work.
+ *
+ * Note: the exec code paths have a tendency to call VNOP_READ (and VNOP_MMAP)
+ * without first calling VNOP_OPEN, so we make sure the file is open here.
+ */
+int
+nfs_vnop_read(
+ struct vnop_read_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ struct uio *a_uio;
+ int a_ioflag;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vnode_t vp = ap->a_vp;
+ vfs_context_t ctx = ap->a_context;
+ nfsnode_t np;
+ struct nfsmount *nmp;
+ struct nfs_open_owner *noop;
+ struct nfs_open_file *nofp;
+ int error;
+
+ if (vnode_vtype(ap->a_vp) != VREG)
+ return (vnode_vtype(vp) == VDIR) ? EISDIR : EPERM;
+
+ np = VTONFS(vp);
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ if (np->n_flag & NREVOKE)
+ return (EIO);
+
+ noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
+ if (!noop)
+ return (ENOMEM);
+restart:
+ error = nfs_open_file_find(np, noop, &nofp, 0, 0, 1);
+ if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
+ NP(np, "nfs_vnop_read: LOST %d", kauth_cred_getuid(noop->noo_cred));
+ error = EIO;
+ }
+ if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ error = nfs4_reopen(nofp, vfs_context_thread(ctx));
+ nofp = NULL;
+ if (!error)
+ goto restart;
+ }
+ if (error) {
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+ /*
+ * Since the read path is a hot path, if we already have
+ * read access, lets go and try and do the read, without
+ * busying the mount and open file node for this open owner.
+ *
+ * N.B. This is inherently racy w.r.t. an execve using
+ * an already open file, in that the read at the end of
+ * this routine will be racing with a potential close.
+ * The code below ultimately has the same problem. In practice
+ * this does not seem to be an issue.
+ */
+ if (nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ) {
+ nfs_open_owner_rele(noop);
+ goto do_read;
+ }
+ error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (error) {
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+ /*
+ * If we don't have a file already open with the access we need (read) then
+ * we need to open one. Otherwise we just co-opt an open. We might not already
+ * have access because we're trying to read the first page of the
+ * file for execve.
+ */
+ error = nfs_open_file_set_busy(nofp, vfs_context_thread(ctx));
+ if (error) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+ if (!(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ)) {
+ /* we don't have the file open, so open it for read access if we're not denied */
+ if (nofp->nof_flags & NFS_OPEN_FILE_NEEDCLOSE) {
+ NP(np, "nfs_vnop_read: File already needs close access: 0x%x, cred: %d thread: %lld",
+ nofp->nof_access, kauth_cred_getuid(nofp->nof_owner->noo_cred), thread_tid(vfs_context_thread(ctx)));
+ }
+ if (nofp->nof_deny & NFS_OPEN_SHARE_DENY_READ) {
+ nfs_open_file_clear_busy(nofp);
+ nfs_mount_state_in_use_end(nmp, 0);
+ nfs_open_owner_rele(noop);
+ return (EPERM);
+ }
+ if (np->n_flag & NREVOKE) {
+ error = EIO;
+ nfs_open_file_clear_busy(nofp);
+ nfs_mount_state_in_use_end(nmp, 0);
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+ if (nmp->nm_vers < NFS_VER4) {
+ /* NFS v2/v3 opens are always allowed - so just add it. */
+ nfs_open_file_add_open(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, 0);
+ } else {
+ error = nfs4_open(np, nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, ctx);
+ }
+ if (!error)
+ nofp->nof_flags |= NFS_OPEN_FILE_NEEDCLOSE;
+ }
+ if (nofp)
+ nfs_open_file_clear_busy(nofp);
+ if (nfs_mount_state_in_use_end(nmp, error)) {
+ nofp = NULL;
+ goto restart;
+ }
+ nfs_open_owner_rele(noop);
+ if (error)
+ return (error);
+do_read:
+ return (nfs_bioread(VTONFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_context));
+}
+
+/*
+ * Note: the NFSv4 CREATE RPC is for everything EXCEPT regular files.
+ * Files are created using the NFSv4 OPEN RPC. So we must open the
+ * file to create it and then close it.
+ */
+int
+nfs4_vnop_create(
+ struct vnop_create_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ struct componentname *cnp = ap->a_cnp;
+ struct vnode_attr *vap = ap->a_vap;
+ vnode_t dvp = ap->a_dvp;
+ vnode_t *vpp = ap->a_vpp;
+ struct nfsmount *nmp;
+ nfsnode_t np;
+ int error = 0, busyerror = 0, accessMode, denyMode;
+ struct nfs_open_owner *noop = NULL;
+ struct nfs_open_file *newnofp = NULL, *nofp = NULL;
+
+ nmp = VTONMP(dvp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ if (vap)
+ nfs_avoid_needless_id_setting_on_create(VTONFS(dvp), vap, ctx);
+
+ noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
+ if (!noop)
+ return (ENOMEM);
+
+restart:
+ error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (error) {
+ nfs_open_owner_rele(noop);
+ return (error);
+ }
+
+ /* grab a provisional, nodeless open file */
+ error = nfs_open_file_find(NULL, noop, &newnofp, 0, 0, 1);
+ if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_LOST)) {
+ printf("nfs_vnop_create: LOST\n");
+ error = EIO;
+ }
+ if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ /* This shouldn't happen given that this is a new, nodeless nofp */
+ nfs_mount_state_in_use_end(nmp, 0);
+ error = nfs4_reopen(newnofp, vfs_context_thread(ctx));
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ if (!error)
+ goto restart;
+ }
+ if (!error)
+ error = nfs_open_file_set_busy(newnofp, vfs_context_thread(ctx));
+ if (error) {
+ if (newnofp)
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ goto out;
+ }
+
+ /*
+ * We're just trying to create the file.
+ * We'll create/open it RW, and set NFS_OPEN_FILE_CREATE.
+ */
+ accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+
+ /* Do the open/create */
+ error = nfs4_open_rpc(newnofp, ctx, cnp, vap, dvp, vpp, NFS_OPEN_CREATE, accessMode, denyMode);
+ if ((error == EACCES) && vap && !(vap->va_vaflags & VA_EXCLUSIVE) &&
+ VATTR_IS_ACTIVE(vap, va_mode) && !(vap->va_mode & S_IWUSR)) {
+ /*
+ * Hmm... it looks like we may have a situation where the request was
+ * retransmitted because we didn't get the first response which successfully
+ * created/opened the file and then the second time we were denied the open
+ * because the mode the file was created with doesn't allow write access.
+ *
+ * We'll try to work around this by temporarily updating the mode and
+ * retrying the open.
+ */
+ struct vnode_attr vattr;
+
+ /* first make sure it's there */
+ int error2 = nfs_lookitup(VTONFS(dvp), cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
+ if (!error2 && np) {
+ nfs_node_unlock(np);
+ *vpp = NFSTOV(np);
+ if (vnode_vtype(NFSTOV(np)) == VREG) {
+ VATTR_INIT(&vattr);
+ VATTR_SET(&vattr, va_mode, (vap->va_mode | S_IWUSR));
+ if (!nfs4_setattr_rpc(np, &vattr, ctx)) {
+ error2 = nfs4_open_rpc(newnofp, ctx, cnp, NULL, dvp, vpp, NFS_OPEN_NOCREATE, accessMode, denyMode);
+ VATTR_INIT(&vattr);
+ VATTR_SET(&vattr, va_mode, vap->va_mode);
+ nfs4_setattr_rpc(np, &vattr, ctx);
+ if (!error2)
+ error = 0;
+ }
+ }
+ if (error) {
+ vnode_put(*vpp);
+ *vpp = NULL;
+ }
+ }
+ }
+ if (!error && !*vpp) {
+ printf("nfs4_open_rpc returned without a node?\n");
+ /* Hmmm... with no node, we have no filehandle and can't close it */
+ error = EIO;
+ }
+ if (error) {
+ /* need to cleanup our temporary nofp */
+ nfs_open_file_clear_busy(newnofp);
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ goto out;
+ }
+ /* After we have a node, add our open file struct to the node */
+ np = VTONFS(*vpp);
+ nfs_open_file_add_open(newnofp, accessMode, denyMode, 0);
+ nofp = newnofp;
+ error = nfs_open_file_find_internal(np, noop, &nofp, 0, 0, 0);
+ if (error) {
+ /* This shouldn't happen, because we passed in a new nofp to use. */
+ printf("nfs_open_file_find_internal failed! %d\n", error);
+ goto out;
+ } else if (nofp != newnofp) {
+ /*
+ * Hmm... an open file struct already exists.
+ * Mark the existing one busy and merge our open into it.
+ * Then destroy the one we created.
+ * Note: there's no chance of an open confict because the
+ * open has already been granted.
+ */
+ busyerror = nfs_open_file_set_busy(nofp, NULL);
+ nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
+ nofp->nof_stateid = newnofp->nof_stateid;
+ if (newnofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)
+ nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+ nfs_open_file_clear_busy(newnofp);
+ nfs_open_file_destroy(newnofp);
+ }
+ newnofp = NULL;
+ /* mark the node as holding a create-initiated open */
+ nofp->nof_flags |= NFS_OPEN_FILE_CREATE;
+ nofp->nof_creator = current_thread();
+out:
+ if (nofp && !busyerror)
+ nfs_open_file_clear_busy(nofp);
+ if (nfs_mount_state_in_use_end(nmp, error)) {
+ nofp = newnofp = NULL;
+ busyerror = 0;
+ goto restart;
+ }
+ if (noop)
+ nfs_open_owner_rele(noop);
+ return (error);
+}
+
+/*
+ * Note: the NFSv4 CREATE RPC is for everything EXCEPT regular files.
+ */
+int
+nfs4_create_rpc(
+ vfs_context_t ctx,
+ nfsnode_t dnp,
+ struct componentname *cnp,
+ struct vnode_attr *vap,
+ int type,
+ char *link,
+ nfsnode_t *npp)
+{
+ struct nfsmount *nmp;
+ struct nfs_vattr nvattr;
+ int error = 0, create_error = EIO, lockerror = ENOENT, busyerror = ENOENT, status;
+ int nfsvers, namedattrs, numops;
+ u_int64_t xid, savedxid = 0;
+ nfsnode_t np = NULL;
vnode_t newvp = NULL;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
- uint32_t seqid, stateid[4], rflags, delegation, val;
+ const char *tag;
+ nfs_specdata sd;
fhandle_t fh;
- struct nfsreq *req = NULL;
+ struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
+ struct nfsreq_secinfo_args si;
- static uint32_t nfs4_open_owner_hack = 0;
+ nmp = NFSTONMP(dnp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+ namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
+ if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
- nmp = VTONMP(dvp);
- if (!nmp)
+ sd.specdata1 = sd.specdata2 = 0;
+
+ switch (type) {
+ case NFLNK:
+ tag = "symlink";
+ break;
+ case NFBLK:
+ case NFCHR:
+ tag = "mknod";
+ if (!VATTR_IS_ACTIVE(vap, va_rdev))
+ return (EINVAL);
+ sd.specdata1 = major(vap->va_rdev);
+ sd.specdata2 = minor(vap->va_rdev);
+ break;
+ case NFSOCK:
+ case NFFIFO:
+ tag = "mknod";
+ break;
+ case NFDIR:
+ tag = "mkdir";
+ break;
+ default:
+ return (EINVAL);
+ }
+
+ nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
+
+ error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
+ if (!namedattrs)
+ nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
+
+ NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
+ NVATTR_INIT(&nvattr);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH, SAVEFH, CREATE, GETATTR(FH), RESTOREFH, GETATTR
+ numops = 6;
+ nfsm_chain_build_alloc_init(error, &nmreq, 66 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, tag, nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_CREATE);
+ nfsm_chain_add_32(error, &nmreq, type);
+ if (type == NFLNK) {
+ nfsm_chain_add_name(error, &nmreq, link, strlen(link), nmp);
+ } else if ((type == NFBLK) || (type == NFCHR)) {
+ nfsm_chain_add_32(error, &nmreq, sd.specdata1);
+ nfsm_chain_add_32(error, &nmreq, sd.specdata2);
+ }
+ nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
+ nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, NULL);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error) {
+ if (!namedattrs)
+ nfs_dulookup_start(&dul, dnp, ctx);
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ }
+
+ if ((lockerror = nfs_node_lock(dnp)))
+ error = lockerror;
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_CREATE);
+ nfsm_chain_check_change_info(error, &nmrep, dnp);
+ bmlen = NFS_ATTR_BITMAP_LEN;
+ nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
+ /* At this point if we have no error, the object was created. */
+ /* if we don't get attributes, then we should lookitup. */
+ create_error = error;
+ nfsmout_if(error);
+ nfs_vattr_set_supported(bitmap, vap);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ printf("nfs: create/%s didn't return filehandle? %s\n", tag, cnp->cn_nameptr);
+ error = EBADRPC;
+ goto nfsmout;
+ }
+ /* directory attributes: if we don't get them, make sure to invalidate */
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ savedxid = xid;
+ nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
+ if (error)
+ NATTRINVALIDATE(dnp);
+
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+
+ if (!lockerror) {
+ if (!create_error && (dnp->n_flag & NNEGNCENTRIES)) {
+ dnp->n_flag &= ~NNEGNCENTRIES;
+ cache_purge_negatives(NFSTOV(dnp));
+ }
+ dnp->n_flag |= NMODIFIED;
+ nfs_node_unlock(dnp);
+ /* nfs_getattr() will check changed and purge caches */
+ nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
+ }
+
+ if (!error && fh.fh_len) {
+ /* create the vnode with the filehandle and attributes */
+ xid = savedxid;
+ error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
+ if (!error)
+ newvp = NFSTOV(np);
+ }
+ NVATTR_CLEANUP(&nvattr);
+
+ if (!namedattrs)
+ nfs_dulookup_finish(&dul, dnp, ctx);
+
+ /*
+ * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry
+ * if we can succeed in looking up the object.
+ */
+ if ((create_error == EEXIST) || (!create_error && !newvp)) {
+ error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
+ if (!error) {
+ newvp = NFSTOV(np);
+ if (vnode_vtype(newvp) != nfstov_type(type, nfsvers))
+ error = EEXIST;
+ }
+ }
+ if (!busyerror)
+ nfs_node_clear_busy(dnp);
+ if (error) {
+ if (newvp) {
+ nfs_node_unlock(np);
+ vnode_put(newvp);
+ }
+ } else {
+ nfs_node_unlock(np);
+ *npp = np;
+ }
+ return (error);
+}
+
+int
+nfs4_vnop_mknod(
+ struct vnop_mknod_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ nfsnode_t np = NULL;
+ struct nfsmount *nmp;
+ int error;
+
+ nmp = VTONMP(ap->a_dvp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ if (!VATTR_IS_ACTIVE(ap->a_vap, va_type))
+ return (EINVAL);
+ switch (ap->a_vap->va_type) {
+ case VBLK:
+ case VCHR:
+ case VFIFO:
+ case VSOCK:
+ break;
+ default:
+ return (ENOTSUP);
+ }
+
+ error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
+ vtonfs_type(ap->a_vap->va_type, nmp->nm_vers), NULL, &np);
+ if (!error)
+ *ap->a_vpp = NFSTOV(np);
+ return (error);
+}
+
+int
+nfs4_vnop_mkdir(
+ struct vnop_mkdir_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ nfsnode_t np = NULL;
+ int error;
+
+ error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
+ NFDIR, NULL, &np);
+ if (!error)
+ *ap->a_vpp = NFSTOV(np);
+ return (error);
+}
+
+int
+nfs4_vnop_symlink(
+ struct vnop_symlink_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ char *a_target;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ nfsnode_t np = NULL;
+ int error;
+
+ error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
+ NFLNK, ap->a_target, &np);
+ if (!error)
+ *ap->a_vpp = NFSTOV(np);
+ return (error);
+}
+
+int
+nfs4_vnop_link(
+ struct vnop_link_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ vnode_t a_tdvp;
+ struct componentname *a_cnp;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ vnode_t vp = ap->a_vp;
+ vnode_t tdvp = ap->a_tdvp;
+ struct componentname *cnp = ap->a_cnp;
+ int error = 0, lockerror = ENOENT, status;
+ struct nfsmount *nmp;
+ nfsnode_t np = VTONFS(vp);
+ nfsnode_t tdnp = VTONFS(tdvp);
+ int nfsvers, numops;
+ u_int64_t xid, savedxid;
+ struct nfsm_chain nmreq, nmrep;
+ struct nfsreq_secinfo_args si;
+
+ if (vnode_mount(vp) != vnode_mount(tdvp))
+ return (EXDEV);
+
+ nmp = VTONMP(vp);
+ if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
+ if (tdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (EINVAL);
- seqid = stateid[0] = stateid[1] = stateid[2] = stateid[3] = 0;
- rflags = 0;
+ /*
+ * Push all writes to the server, so that the attribute cache
+ * doesn't get "out of sync" with the server.
+ * XXX There should be a better way!
+ */
+ nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
- nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen);
+ if ((error = nfs_node_set_busy2(tdnp, np, vfs_context_thread(ctx))))
+ return (error);
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
- // PUTFH, SAVEFH, OPEN(CREATE), GETATTR(FH), RESTOREFH, GETATTR
- numops = 6;
- nfsm_chain_build_alloc_init(error, &nmreq, 53 * NFSX_UNSIGNED + cnp->cn_namelen);
- nfsm_chain_add_compound_header(error, &nmreq, "create", numops);
+ // PUTFH(SOURCE), SAVEFH, PUTFH(DIR), LINK, GETATTR(DIR), RESTOREFH, GETATTR
+ numops = 7;
+ nfsm_chain_build_alloc_init(error, &nmreq, 29 * NFSX_UNSIGNED + cnp->cn_namelen);
+ nfsm_chain_add_compound_header(error, &nmreq, "link", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
- nfsm_chain_add_32(error, &nmreq, seqid);
- seqid++;
- nfsm_chain_add_32(error, &nmreq, NFS_OPEN_SHARE_ACCESS_BOTH);
- nfsm_chain_add_32(error, &nmreq, NFS_OPEN_SHARE_DENY_NONE);
- nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid); // open_owner4.clientid
- OSAddAtomic(1, (SInt32*)&nfs4_open_owner_hack);
- nfsm_chain_add_32(error, &nmreq, sizeof(nfs4_open_owner_hack));
- nfsm_chain_add_opaque(error, &nmreq, &nfs4_open_owner_hack, sizeof(nfs4_open_owner_hack)); // open_owner4.owner
- // openflag4
- nfsm_chain_add_32(error, &nmreq, NFS_OPEN_CREATE);
- nfsm_chain_add_32(error, &nmreq, NFS_CREATE_UNCHECKED); // XXX exclusive/guarded
- nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
- // open_claim4
- nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_NULL);
- nfsm_chain_add_string(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen);
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LINK);
+ nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
- NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
- nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, tdnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_EXCLUSIVE)))
- error = lockerror;
- nfsmout_if(error);
+ error = nfs_request(tdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
- error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
- vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, &req);
- if (!error) {
- nfs_dulookup_start(&dul, dnp, ctx);
- error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock2(tdnp, np))) {
+ error = lockerror;
+ goto nfsmout;
}
- savedxid = xid;
-
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
- nfsm_chain_get_32(error, &nmrep, stateid[0]);
- nfsm_chain_get_32(error, &nmrep, stateid[1]);
- nfsm_chain_get_32(error, &nmrep, stateid[2]);
- nfsm_chain_get_32(error, &nmrep, stateid[3]);
- nfsm_chain_check_change_info(error, &nmrep, dnp);
- nfsm_chain_get_32(error, &nmrep, rflags);
- bmlen = NFS_ATTR_BITMAP_LEN;
- nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
- nfsm_chain_get_32(error, &nmrep, delegation);
- if (!error)
- switch (delegation) {
- case NFS_OPEN_DELEGATE_NONE:
- break;
- case NFS_OPEN_DELEGATE_READ:
- printf("nfs4_vnop_create: read delegation?\n");
- nfsm_chain_adv(error, &nmrep, 5*NFSX_UNSIGNED);
- // ACE:
- nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
- nfsm_chain_get_32(error, &nmrep, val); /* string length */
- nfsm_chain_adv(error, &nmrep, nfsm_rndup(val));
- break;
- case NFS_OPEN_DELEGATE_WRITE:
- printf("nfs4_vnop_create: write delegation?\n");
- nfsm_chain_adv(error, &nmrep, 5*NFSX_UNSIGNED);
- nfsm_chain_adv(error, &nmrep, 3*NFSX_UNSIGNED);
- // ACE:
- nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
- nfsm_chain_get_32(error, &nmrep, val); /* string length */
- nfsm_chain_adv(error, &nmrep, nfsm_rndup(val));
- break;
- default:
- error = EBADRPC;
- break;
- }
- /* At this point if we have no error, the object was created. */
- /* if we don't get attributes, then we should lookitup. */
- create_error = error;
- nfsmout_if(error);
- nfs_vattr_set_supported(bitmap, vap);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL);
- nfsmout_if(error);
- if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
- printf("nfs: open/create didn't return filehandle?\n");
- error = EBADRPC;
- goto nfsmout;
- }
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_LINK);
+ nfsm_chain_check_change_info(error, &nmrep, tdnp);
/* directory attributes: if we don't get them, make sure to invalidate */
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ savedxid = xid;
+ nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, &xid);
+ if (error)
+ NATTRINVALIDATE(tdnp);
+ /* link attributes: if we don't get them, make sure to invalidate */
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, NULL, &xid);
+ xid = savedxid;
+ nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (error)
- NATTRINVALIDATE(dnp);
+ NATTRINVALIDATE(np);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ if (!lockerror)
+ tdnp->n_flag |= NMODIFIED;
+ /* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. */
+ if (error == EEXIST)
+ error = 0;
+ if (!error && (tdnp->n_flag & NNEGNCENTRIES)) {
+ tdnp->n_flag &= ~NNEGNCENTRIES;
+ cache_purge_negatives(tdvp);
+ }
+ if (!lockerror)
+ nfs_node_unlock2(tdnp, np);
+ nfs_node_clear_busy2(tdnp, np);
+ return (error);
+}
- if (rflags & NFS_OPEN_RESULT_CONFIRM) {
- nfsm_chain_cleanup(&nmreq);
- nfsm_chain_cleanup(&nmrep);
- // PUTFH, OPEN_CONFIRM, GETATTR
- numops = 3;
- nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "create_confirm", numops);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, fh.fh_data, fh.fh_len);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN_CONFIRM);
- nfsm_chain_add_32(error, &nmreq, stateid[0]);
- nfsm_chain_add_32(error, &nmreq, stateid[1]);
- nfsm_chain_add_32(error, &nmreq, stateid[2]);
- nfsm_chain_add_32(error, &nmreq, stateid[3]);
- nfsm_chain_add_32(error, &nmreq, seqid);
- seqid++;
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
- nfsm_chain_build_done(error, &nmreq);
- nfsm_assert(error, (numops == 0), EPROTO);
- nfsmout_if(error);
- error = nfs_request(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+int
+nfs4_vnop_rmdir(
+ struct vnop_rmdir_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t a_vp;
+ struct componentname *a_cnp;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ vnode_t vp = ap->a_vp;
+ vnode_t dvp = ap->a_dvp;
+ struct componentname *cnp = ap->a_cnp;
+ struct nfsmount *nmp;
+ int error = 0, namedattrs;
+ nfsnode_t np = VTONFS(vp);
+ nfsnode_t dnp = VTONFS(dvp);
+ struct nfs_dulookup dul;
- nfsm_chain_skip_tag(error, &nmrep);
- nfsm_chain_get_32(error, &nmrep, numops);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN_CONFIRM);
- nfsm_chain_get_32(error, &nmrep, stateid[0]);
- nfsm_chain_get_32(error, &nmrep, stateid[1]);
- nfsm_chain_get_32(error, &nmrep, stateid[2]);
- nfsm_chain_get_32(error, &nmrep, stateid[3]);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, &nvattr, NULL, NULL);
- nfsmout_if(error);
- savedxid = xid;
+ if (vnode_vtype(vp) != VDIR)
+ return (EINVAL);
+
+ nmp = NFSTONMP(dnp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
+
+ if ((error = nfs_node_set_busy2(dnp, np, vfs_context_thread(ctx))))
+ return (error);
+
+ if (!namedattrs) {
+ nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
+ nfs_dulookup_start(&dul, dnp, ctx);
}
- nfsmout_if(error);
- nfsm_chain_cleanup(&nmreq);
- nfsm_chain_cleanup(&nmrep);
- // PUTFH, CLOSE
- numops = 2;
- nfsm_chain_build_alloc_init(error, &nmreq, 19 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, "create_close", numops);
+ error = nfs4_remove_rpc(dnp, cnp->cn_nameptr, cnp->cn_namelen,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx));
+
+ nfs_name_cache_purge(dnp, np, cnp, ctx);
+ /* nfs_getattr() will check changed and purge caches */
+ nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
+ if (!namedattrs)
+ nfs_dulookup_finish(&dul, dnp, ctx);
+ nfs_node_clear_busy2(dnp, np);
+
+ /*
+ * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
+ */
+ if (error == ENOENT)
+ error = 0;
+ if (!error) {
+ /*
+ * remove nfsnode from hash now so we can't accidentally find it
+ * again if another object gets created with the same filehandle
+ * before this vnode gets reclaimed
+ */
+ lck_mtx_lock(nfs_node_hash_mutex);
+ if (np->n_hflag & NHHASHED) {
+ LIST_REMOVE(np, n_hash);
+ np->n_hflag &= ~NHHASHED;
+ FSDBG(266, 0, np, np->n_flag, 0xb1eb1e);
+ }
+ lck_mtx_unlock(nfs_node_hash_mutex);
+ }
+ return (error);
+}
+
+/*
+ * NFSv4 Named Attributes
+ *
+ * Both the extended attributes interface and the named streams interface
+ * are backed by NFSv4 named attributes. The implementations for both use
+ * a common set of routines in an attempt to reduce code duplication, to
+ * increase efficiency, to increase caching of both names and data, and to
+ * confine the complexity.
+ *
+ * Each NFS node caches its named attribute directory's file handle.
+ * The directory nodes for the named attribute directories are handled
+ * exactly like regular directories (with a couple minor exceptions).
+ * Named attribute nodes are also treated as much like regular files as
+ * possible.
+ *
+ * Most of the heavy lifting is done by nfs4_named_attr_get().
+ */
+
+/*
+ * Get the given node's attribute directory node.
+ * If !fetch, then only return a cached node.
+ * Otherwise, we will attempt to fetch the node from the server.
+ * (Note: the node should be marked busy.)
+ */
+nfsnode_t
+nfs4_named_attr_dir_get(nfsnode_t np, int fetch, vfs_context_t ctx)
+{
+ nfsnode_t adnp = NULL;
+ struct nfsmount *nmp;
+ int error = 0, status, numops;
+ struct nfsm_chain nmreq, nmrep;
+ u_int64_t xid;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
+ fhandle_t fh;
+ struct nfs_vattr nvattr;
+ struct componentname cn;
+ struct nfsreq rq, *req = &rq;
+ struct nfsreq_secinfo_args si;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (NULL);
+ if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
+ return (NULL);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ NVATTR_INIT(&nvattr);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(_PATH_FORKSPECIFIER, const, char *); /* "/..namedfork/" */
+ cn.cn_namelen = strlen(_PATH_FORKSPECIFIER);
+ cn.cn_nameiop = LOOKUP;
+
+ if (np->n_attrdirfh) {
+ // XXX can't set parent correctly (to np) yet
+ error = nfs_nget(nmp->nm_mountp, NULL, &cn, np->n_attrdirfh+1, *np->n_attrdirfh,
+ NULL, NULL, RPCAUTH_UNKNOWN, NG_NOCREATE, &adnp);
+ if (adnp)
+ goto nfsmout;
+ }
+ if (!fetch) {
+ error = ENOENT;
+ goto nfsmout;
+ }
+
+ // PUTFH, OPENATTR, GETATTR
+ numops = 3;
+ nfsm_chain_build_alloc_init(error, &nmreq, 22 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "openattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, fh.fh_data, fh.fh_len);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_CLOSE);
- nfsm_chain_add_32(error, &nmreq, seqid);
- seqid++;
- nfsm_chain_add_32(error, &nmreq, stateid[0]);
- nfsm_chain_add_32(error, &nmreq, stateid[1]);
- nfsm_chain_add_32(error, &nmreq, stateid[2]);
- nfsm_chain_add_32(error, &nmreq, stateid[3]);
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
+ nfsm_chain_add_32(error, &nmreq, 0);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
+ NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- error = nfs_request(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error)
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_CLOSE);
- nfsm_chain_get_32(error, &nmrep, stateid[0]);
- nfsm_chain_get_32(error, &nmrep, stateid[1]);
- nfsm_chain_get_32(error, &nmrep, stateid[2]);
- nfsm_chain_get_32(error, &nmrep, stateid[3]);
- if (error)
- printf("nfs4_vnop_create: close error %d\n", error);
-
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) || !fh.fh_len) {
+ error = ENOENT;
+ goto nfsmout;
+ }
+ if (!np->n_attrdirfh || (*np->n_attrdirfh != fh.fh_len)) {
+ /* (re)allocate attrdir fh buffer */
+ if (np->n_attrdirfh)
+ FREE(np->n_attrdirfh, M_TEMP);
+ MALLOC(np->n_attrdirfh, u_char*, fh.fh_len+1, M_TEMP, M_WAITOK);
+ }
+ if (!np->n_attrdirfh) {
+ error = ENOMEM;
+ goto nfsmout;
+ }
+ /* cache the attrdir fh in the node */
+ *np->n_attrdirfh = fh.fh_len;
+ bcopy(fh.fh_data, np->n_attrdirfh+1, fh.fh_len);
+ /* create node for attrdir */
+ // XXX can't set parent correctly (to np) yet
+ error = nfs_nget(NFSTOMP(np), NULL, &cn, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, 0, &adnp);
nfsmout:
+ NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
- if (!lockerror) {
- if (!create_error && (dnp->n_flag & NNEGNCENTRIES)) {
- dnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge_negatives(dvp);
- }
- dnp->n_flag |= NMODIFIED;
- if (!nfs_getattr(dnp, &dnvattr, ctx, 1)) {
- if (NFS_CHANGED_NC(nfsvers, dnp, &dnvattr)) {
- dnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge(dvp);
- NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnvattr);
- }
- }
- }
-
- if (!error && fh.fh_len) {
- /* create the vnode with the filehandle and attributes */
- xid = savedxid;
- error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, NG_MAKEENTRY, &np);
- if (!error)
- newvp = NFSTOV(np);
- }
-
- nfs_dulookup_finish(&dul, dnp, ctx);
-
- /*
- * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry
- * if we can succeed in looking up the object.
- */
- if ((create_error == EEXIST) || (!create_error && !newvp)) {
- error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
- if (!error) {
- newvp = NFSTOV(np);
- if (vnode_vtype(newvp) != VLNK)
- error = EEXIST;
- }
+ if (adnp) {
+ /* sanity check that this node is an attribute directory */
+ if (adnp->n_vattr.nva_type != VDIR)
+ error = EINVAL;
+ if (!(adnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
+ error = EINVAL;
+ nfs_node_unlock(adnp);
+ if (error)
+ vnode_put(NFSTOV(adnp));
}
- if (!lockerror)
- nfs_unlock(dnp);
- if (error) {
- if (newvp) {
- nfs_unlock(np);
- vnode_put(newvp);
- }
- } else {
- nfs_unlock(np);
- *vpp = newvp;
- }
- return (error);
+ return (error ? NULL : adnp);
}
/*
- * Note: the NFSv4 CREATE RPC is for everything EXCEPT regular files.
+ * Get the given node's named attribute node for the name given.
+ *
+ * In an effort to increase the performance of named attribute access, we try
+ * to reduce server requests by doing the following:
+ *
+ * - cache the node's named attribute directory file handle in the node
+ * - maintain a directory vnode for the attribute directory
+ * - use name cache entries (positive and negative) to speed up lookups
+ * - optionally open the named attribute (with the given accessMode) in the same RPC
+ * - combine attribute directory retrieval with the lookup/open RPC
+ * - optionally prefetch the named attribute's first block of data in the same RPC
+ *
+ * Also, in an attempt to reduce the number of copies/variations of this code,
+ * parts of the RPC building/processing code are conditionalized on what is
+ * needed for any particular request (openattr, lookup vs. open, read).
+ *
+ * Note that because we may not have the attribute directory node when we start
+ * the lookup/open, we lock both the node and the attribute directory node.
*/
-static int
-nfs4_create_rpc(
- vfs_context_t ctx,
- nfsnode_t dnp,
+
+#define NFS_GET_NAMED_ATTR_CREATE 0x1
+#define NFS_GET_NAMED_ATTR_CREATE_GUARDED 0x2
+#define NFS_GET_NAMED_ATTR_TRUNCATE 0x4
+#define NFS_GET_NAMED_ATTR_PREFETCH 0x8
+
+int
+nfs4_named_attr_get(
+ nfsnode_t np,
struct componentname *cnp,
- struct vnode_attr *vap,
- int type,
- char *link,
- nfsnode_t *npp)
+ uint32_t accessMode,
+ int flags,
+ vfs_context_t ctx,
+ nfsnode_t *anpp,
+ struct nfs_open_file **nofpp)
{
struct nfsmount *nmp;
- struct nfs_vattr nvattr, dnvattr;
- int error = 0, create_error = EIO, lockerror = ENOENT, status;
- int nfsvers, numops;
+ int error = 0, open_error = EIO;
+ int inuse = 0, adlockerror = ENOENT, busyerror = ENOENT, adbusyerror = ENOENT, nofpbusyerror = ENOENT;
+ int create, guarded, prefetch, truncate, noopbusy = 0;
+ int open, status, numops, hadattrdir, negnamecache;
+ struct nfs_vattr nvattr;
+ struct vnode_attr vattr;
+ nfsnode_t adnp = NULL, anp = NULL;
+ vnode_t avp = NULL;
u_int64_t xid, savedxid = 0;
- nfsnode_t np = NULL;
- vnode_t newvp = NULL;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
- const char *tag;
- nfs_specdata sd;
+ uint32_t denyMode, rflags, delegation, recall, eof, rlen, retlen;
+ nfs_stateid stateid, dstateid;
fhandle_t fh;
- struct nfsreq *req = NULL;
- struct nfs_dulookup dul;
+ struct nfs_open_owner *noop = NULL;
+ struct nfs_open_file *newnofp = NULL, *nofp = NULL;
+ struct vnop_access_args naa;
+ thread_t thd;
+ kauth_cred_t cred;
+ struct timeval now;
+ char sbuf[64], *s;
+ uint32_t ace_type, ace_flags, ace_mask, len, slen;
+ struct kauth_ace ace;
+ struct nfsreq rq, *req = &rq;
+ struct nfsreq_secinfo_args si;
+
+ *anpp = NULL;
+ fh.fh_len = 0;
+ rflags = delegation = recall = eof = rlen = retlen = 0;
+ ace.ace_flags = 0;
+ s = sbuf;
+ slen = sizeof(sbuf);
- nmp = NFSTONMP(dnp);
- if (!nmp)
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
return (ENXIO);
- nfsvers = nmp->nm_vers;
-
- sd.specdata1 = sd.specdata2 = 0;
+ NVATTR_INIT(&nvattr);
+ negnamecache = !NMFLAG(nmp, NONEGNAMECACHE);
+ thd = vfs_context_thread(ctx);
+ cred = vfs_context_ucred(ctx);
+ create = (flags & NFS_GET_NAMED_ATTR_CREATE) ? NFS_OPEN_CREATE : NFS_OPEN_NOCREATE;
+ guarded = (flags & NFS_GET_NAMED_ATTR_CREATE_GUARDED) ? NFS_CREATE_GUARDED : NFS_CREATE_UNCHECKED;
+ truncate = (flags & NFS_GET_NAMED_ATTR_TRUNCATE);
+ prefetch = (flags & NFS_GET_NAMED_ATTR_PREFETCH);
+
+ if (!create) {
+ error = nfs_getattr(np, &nvattr, ctx, NGA_CACHED);
+ if (error)
+ return (error);
+ if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
+ !(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
+ return (ENOATTR);
+ } else if (accessMode == NFS_OPEN_SHARE_ACCESS_NONE) {
+ /* shouldn't happen... but just be safe */
+ printf("nfs4_named_attr_get: create with no access %s\n", cnp->cn_nameptr);
+ accessMode = NFS_OPEN_SHARE_ACCESS_READ;
+ }
+ open = (accessMode != NFS_OPEN_SHARE_ACCESS_NONE);
+ if (open) {
+ /*
+ * We're trying to open the file.
+ * We'll create/open it with the given access mode,
+ * and set NFS_OPEN_FILE_CREATE.
+ */
+ denyMode = NFS_OPEN_SHARE_DENY_NONE;
+ if (prefetch && guarded)
+ prefetch = 0; /* no sense prefetching data that can't be there */
- switch (type) {
- case NFLNK:
- tag = "symlink";
- break;
- case NFBLK:
- case NFCHR:
- tag = "mknod";
- if (!VATTR_IS_ACTIVE(vap, va_rdev))
- return (EINVAL);
- sd.specdata1 = major(vap->va_rdev);
- sd.specdata2 = minor(vap->va_rdev);
- break;
- case NFSOCK:
- case NFFIFO:
- tag = "mknod";
- break;
- case NFDIR:
- tag = "mkdir";
- break;
- default:
- return (EINVAL);
+ noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
+ if (!noop)
+ return (ENOMEM);
}
- nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen);
+ if ((error = busyerror = nfs_node_set_busy(np, vfs_context_thread(ctx))))
+ return (error);
+ adnp = nfs4_named_attr_dir_get(np, 0, ctx);
+ hadattrdir = (adnp != NULL);
+ if (prefetch) {
+ microuptime(&now);
+ /* use the special state ID because we don't have a real one to send */
+ stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
+ rlen = MIN(nmp->nm_rsize, nmp->nm_biosize);
+ }
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
- // PUTFH, SAVEFH, CREATE, GETATTR(FH), RESTOREFH, GETATTR
- numops = 6;
- nfsm_chain_build_alloc_init(error, &nmreq, 66 * NFSX_UNSIGNED);
- nfsm_chain_add_compound_header(error, &nmreq, tag, numops);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_CREATE);
- nfsm_chain_add_32(error, &nmreq, type);
- if (type == NFLNK) {
- nfsm_chain_add_string(error, &nmreq, link, strlen(link));
- } else if ((type == NFBLK) || (type == NFCHR)) {
- nfsm_chain_add_32(error, &nmreq, sd.specdata1);
- nfsm_chain_add_32(error, &nmreq, sd.specdata2);
+ if (hadattrdir) {
+ if ((error = adbusyerror = nfs_node_set_busy(adnp, vfs_context_thread(ctx))))
+ goto nfsmout;
+ /* nfs_getattr() will check changed and purge caches */
+ error = nfs_getattr(adnp, NULL, ctx, NGA_CACHED);
+ nfsmout_if(error);
+ error = cache_lookup(NFSTOV(adnp), &avp, cnp);
+ switch (error) {
+ case ENOENT:
+ /* negative cache entry */
+ goto nfsmout;
+ case 0:
+ /* cache miss */
+ /* try dir buf cache lookup */
+ error = nfs_dir_buf_cache_lookup(adnp, &anp, cnp, ctx, 0);
+ if (!error && anp) {
+ /* dir buf cache hit */
+ *anpp = anp;
+ error = -1;
+ }
+ if (error != -1) /* cache miss */
+ break;
+ /* FALLTHROUGH */
+ case -1:
+ /* cache hit, not really an error */
+ OSAddAtomic64(1, &nfsstats.lookupcache_hits);
+ if (!anp && avp)
+ *anpp = anp = VTONFS(avp);
+
+ nfs_node_clear_busy(adnp);
+ adbusyerror = ENOENT;
+
+ /* check for directory access */
+ naa.a_desc = &vnop_access_desc;
+ naa.a_vp = NFSTOV(adnp);
+ naa.a_action = KAUTH_VNODE_SEARCH;
+ naa.a_context = ctx;
+
+ /* compute actual success/failure based on accessibility */
+ error = nfs_vnop_access(&naa);
+ /* FALLTHROUGH */
+ default:
+ /* we either found it, or hit an error */
+ if (!error && guarded) {
+ /* found cached entry but told not to use it */
+ error = EEXIST;
+ vnode_put(NFSTOV(anp));
+ *anpp = anp = NULL;
+ }
+ /* we're done if error or we don't need to open */
+ if (error || !open)
+ goto nfsmout;
+ /* no error and we need to open... */
+ }
+ }
+
+ if (open) {
+restart:
+ error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
+ if (error) {
+ nfs_open_owner_rele(noop);
+ noop = NULL;
+ goto nfsmout;
+ }
+ inuse = 1;
+
+ /* grab an open file - possibly provisional/nodeless if cache_lookup() failed */
+ error = nfs_open_file_find(anp, noop, &newnofp, 0, 0, 1);
+ if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_LOST)) {
+ printf("nfs4_named_attr_get: LOST %d %s\n", kauth_cred_getuid(noop->noo_cred), cnp->cn_nameptr);
+ error = EIO;
+ }
+ if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
+ nfs_mount_state_in_use_end(nmp, 0);
+ error = nfs4_reopen(newnofp, vfs_context_thread(ctx));
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ if (!error)
+ goto restart;
+ }
+ if (!error)
+ error = nfs_open_file_set_busy(newnofp, vfs_context_thread(ctx));
+ if (error) {
+ if (newnofp)
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ goto nfsmout;
+ }
+ if (anp) {
+ /*
+ * We already have the node. So we just need to open
+ * it - which we may be able to do with a delegation.
+ */
+ open_error = error = nfs4_open(anp, newnofp, accessMode, denyMode, ctx);
+ if (!error) {
+ /* open succeeded, so our open file is no longer temporary */
+ nofp = newnofp;
+ nofpbusyerror = 0;
+ newnofp = NULL;
+ if (nofpp)
+ *nofpp = nofp;
+ }
+ goto nfsmout;
+ }
+ }
+
+ /*
+ * We either don't have the attrdir or we didn't find the attribute
+ * in the name cache, so we need to talk to the server.
+ *
+ * If we don't have the attrdir, we'll need to ask the server for that too.
+ * If the caller is requesting that the attribute be created, we need to
+ * make sure the attrdir is created.
+ * The caller may also request that the first block of an existing attribute
+ * be retrieved at the same time.
+ */
+
+ if (open) {
+ /* need to mark the open owner busy during the RPC */
+ if ((error = nfs_open_owner_set_busy(noop, thd)))
+ goto nfsmout;
+ noopbusy = 1;
+ }
+
+ /*
+ * We'd like to get updated post-open/lookup attributes for the
+ * directory and we may also want to prefetch some data via READ.
+ * We'd like the READ results to be last so that we can leave the
+ * data in the mbufs until the end.
+ *
+ * At a minimum we're sending: PUTFH, LOOKUP/OPEN, GETATTR, PUTFH, GETATTR
+ */
+ numops = 5;
+ if (!hadattrdir)
+ numops += 3; // also sending: OPENATTR, GETATTR, OPENATTR
+ if (prefetch)
+ numops += 4; // also sending: SAVEFH, RESTOREFH, NVERIFY, READ
+ nfsm_chain_build_alloc_init(error, &nmreq, 64 * NFSX_UNSIGNED + cnp->cn_namelen);
+ nfsm_chain_add_compound_header(error, &nmreq, "getnamedattr", nmp->nm_minor_vers, numops);
+ if (hadattrdir) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, adnp->n_fhp, adnp->n_fhsize);
+ } else {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
+ nfsm_chain_add_32(error, &nmreq, create ? 1 : 0);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
+ NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ }
+ if (open) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
+ nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
+ nfsm_chain_add_32(error, &nmreq, accessMode);
+ nfsm_chain_add_32(error, &nmreq, denyMode);
+ nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
+ nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred));
+ nfsm_chain_add_32(error, &nmreq, create);
+ if (create) {
+ nfsm_chain_add_32(error, &nmreq, guarded);
+ VATTR_INIT(&vattr);
+ if (truncate)
+ VATTR_SET(&vattr, va_data_size, 0);
+ nfsm_chain_add_fattr4(error, &nmreq, &vattr, nmp);
+ }
+ nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_NULL);
+ nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
+ } else {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
+ nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
}
- nfsm_chain_add_string(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen);
- nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
+ if (prefetch) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
+ }
+ if (hadattrdir) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, adnp->n_fhp, adnp->n_fhsize);
+ } else {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
+ nfsm_chain_add_32(error, &nmreq, 0);
+ }
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
+ if (prefetch) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_NVERIFY);
+ VATTR_INIT(&vattr);
+ VATTR_SET(&vattr, va_data_size, 0);
+ nfsm_chain_add_fattr4(error, &nmreq, &vattr, nmp);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_READ);
+ nfsm_chain_add_stateid(error, &nmreq, &stateid);
+ nfsm_chain_add_64(error, &nmreq, 0);
+ nfsm_chain_add_32(error, &nmreq, rlen);
+ }
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
- if ((lockerror = nfs_lock(dnp, NFS_NODE_LOCK_EXCLUSIVE)))
- error = lockerror;
- nfsmout_if(error);
-
- error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
- vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, &req);
- if (!error) {
- nfs_dulookup_start(&dul, dnp, ctx);
+ error = nfs_request_async(hadattrdir ? adnp : np, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, open ? R_NOINTR: 0, NULL, &req);
+ if (!error)
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
- }
+ if (hadattrdir && ((adlockerror = nfs_node_lock(adnp))))
+ error = adlockerror;
+ savedxid = xid;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
- nfsmout_if(error);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_CREATE);
- nfsm_chain_check_change_info(error, &nmrep, dnp);
- bmlen = NFS_ATTR_BITMAP_LEN;
- nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
- /* At this point if we have no error, the object was created. */
- /* if we don't get attributes, then we should lookitup. */
- create_error = error;
- nfsmout_if(error);
- nfs_vattr_set_supported(bitmap, vap);
+ if (!hadattrdir) {
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
+ nfsmout_if(error);
+ if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) && fh.fh_len) {
+ if (!np->n_attrdirfh || (*np->n_attrdirfh != fh.fh_len)) {
+ /* (re)allocate attrdir fh buffer */
+ if (np->n_attrdirfh)
+ FREE(np->n_attrdirfh, M_TEMP);
+ MALLOC(np->n_attrdirfh, u_char*, fh.fh_len+1, M_TEMP, M_WAITOK);
+ }
+ if (np->n_attrdirfh) {
+ /* remember the attrdir fh in the node */
+ *np->n_attrdirfh = fh.fh_len;
+ bcopy(fh.fh_data, np->n_attrdirfh+1, fh.fh_len);
+ /* create busied node for attrdir */
+ struct componentname cn;
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(_PATH_FORKSPECIFIER, const, char *); /* "/..namedfork/" */
+ cn.cn_namelen = strlen(_PATH_FORKSPECIFIER);
+ cn.cn_nameiop = LOOKUP;
+ // XXX can't set parent correctly (to np) yet
+ error = nfs_nget(NFSTOMP(np), NULL, &cn, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, 0, &adnp);
+ if (!error) {
+ adlockerror = 0;
+ /* set the node busy */
+ SET(adnp->n_flag, NBUSY);
+ adbusyerror = 0;
+ }
+ /* if no adnp, oh well... */
+ error = 0;
+ }
+ }
+ NVATTR_CLEANUP(&nvattr);
+ fh.fh_len = 0;
+ }
+ if (open) {
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
+ nfs_owner_seqid_increment(noop, NULL, error);
+ nfsm_chain_get_stateid(error, &nmrep, &newnofp->nof_stateid);
+ nfsm_chain_check_change_info(error, &nmrep, adnp);
+ nfsm_chain_get_32(error, &nmrep, rflags);
+ bmlen = NFS_ATTR_BITMAP_LEN;
+ nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
+ nfsm_chain_get_32(error, &nmrep, delegation);
+ if (!error)
+ switch (delegation) {
+ case NFS_OPEN_DELEGATE_NONE:
+ break;
+ case NFS_OPEN_DELEGATE_READ:
+ case NFS_OPEN_DELEGATE_WRITE:
+ nfsm_chain_get_stateid(error, &nmrep, &dstateid);
+ nfsm_chain_get_32(error, &nmrep, recall);
+ if (delegation == NFS_OPEN_DELEGATE_WRITE) // space (skip) XXX
+ nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
+ /* if we have any trouble accepting the ACE, just invalidate it */
+ ace_type = ace_flags = ace_mask = len = 0;
+ nfsm_chain_get_32(error, &nmrep, ace_type);
+ nfsm_chain_get_32(error, &nmrep, ace_flags);
+ nfsm_chain_get_32(error, &nmrep, ace_mask);
+ nfsm_chain_get_32(error, &nmrep, len);
+ ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
+ ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
+ ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
+ if (!error && (len >= slen)) {
+ MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
+ if (s)
+ slen = len+1;
+ else
+ ace.ace_flags = 0;
+ }
+ if (s)
+ nfsm_chain_get_opaque(error, &nmrep, len, s);
+ else
+ nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
+ if (!error && s) {
+ s[len] = '\0';
+ if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
+ ace.ace_flags = 0;
+ }
+ if (error || !s)
+ ace.ace_flags = 0;
+ if (s && (s != sbuf))
+ FREE(s, M_TEMP);
+ break;
+ default:
+ error = EBADRPC;
+ break;
+ }
+ /* At this point if we have no error, the object was created/opened. */
+ open_error = error;
+ } else {
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_LOOKUP);
+ }
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
- NFS_CLEAR_ATTRIBUTES(nvattr.nva_bitmap);
- error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL);
+ error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
- if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
- printf("nfs: create/%s didn't return filehandle?\n", tag);
- error = EBADRPC;
+ if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) || !fh.fh_len) {
+ error = EIO;
goto nfsmout;
}
- /* directory attributes: if we don't get them, make sure to invalidate */
- nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
+ if (prefetch)
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ if (!hadattrdir)
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- savedxid = xid;
- nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, NULL, &xid);
- if (error)
- NATTRINVALIDATE(dnp);
-
-nfsmout:
- nfsm_chain_cleanup(&nmreq);
- nfsm_chain_cleanup(&nmrep);
+ nfsmout_if(error);
+ xid = savedxid;
+ nfsm_chain_loadattr(error, &nmrep, adnp, nmp->nm_vers, &xid);
+ nfsmout_if(error);
- if (!lockerror) {
- if (!create_error && (dnp->n_flag & NNEGNCENTRIES)) {
- dnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge_negatives(NFSTOV(dnp));
- }
- dnp->n_flag |= NMODIFIED;
- if (!nfs_getattr(dnp, &dnvattr, ctx, 1)) {
- if (NFS_CHANGED_NC(nfsvers, dnp, &dnvattr)) {
- dnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge(NFSTOV(dnp));
- NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnvattr);
+ if (open) {
+ if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
+ newnofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+ if (rflags & NFS_OPEN_RESULT_CONFIRM) {
+ if (adnp) {
+ nfs_node_unlock(adnp);
+ adlockerror = ENOENT;
}
+ NVATTR_CLEANUP(&nvattr);
+ error = nfs4_open_confirm_rpc(nmp, adnp ? adnp : np, fh.fh_data, fh.fh_len, noop, &newnofp->nof_stateid, thd, cred, &nvattr, &xid);
+ nfsmout_if(error);
+ savedxid = xid;
+ if ((adlockerror = nfs_node_lock(adnp)))
+ error = adlockerror;
}
}
- if (!error && fh.fh_len) {
+nfsmout:
+ if (open && adnp && !adlockerror) {
+ if (!open_error && (adnp->n_flag & NNEGNCENTRIES)) {
+ adnp->n_flag &= ~NNEGNCENTRIES;
+ cache_purge_negatives(NFSTOV(adnp));
+ }
+ adnp->n_flag |= NMODIFIED;
+ nfs_node_unlock(adnp);
+ adlockerror = ENOENT;
+ nfs_getattr(adnp, NULL, ctx, NGA_CACHED);
+ }
+ if (adnp && !adlockerror && (error == ENOENT) &&
+ (cnp->cn_flags & MAKEENTRY) && (cnp->cn_nameiop != CREATE) && negnamecache) {
+ /* add a negative entry in the name cache */
+ cache_enter(NFSTOV(adnp), NULL, cnp);
+ adnp->n_flag |= NNEGNCENTRIES;
+ }
+ if (adnp && !adlockerror) {
+ nfs_node_unlock(adnp);
+ adlockerror = ENOENT;
+ }
+ if (!error && !anp && fh.fh_len) {
/* create the vnode with the filehandle and attributes */
xid = savedxid;
- error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, NG_MAKEENTRY, &np);
- if (!error)
- newvp = NFSTOV(np);
+ error = nfs_nget(NFSTOMP(np), adnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &anp);
+ if (!error) {
+ *anpp = anp;
+ nfs_node_unlock(anp);
+ }
+ if (!error && open) {
+ nfs_open_file_add_open(newnofp, accessMode, denyMode, 0);
+ /* After we have a node, add our open file struct to the node */
+ nofp = newnofp;
+ error = nfs_open_file_find_internal(anp, noop, &nofp, 0, 0, 0);
+ if (error) {
+ /* This shouldn't happen, because we passed in a new nofp to use. */
+ printf("nfs_open_file_find_internal failed! %d\n", error);
+ nofp = NULL;
+ } else if (nofp != newnofp) {
+ /*
+ * Hmm... an open file struct already exists.
+ * Mark the existing one busy and merge our open into it.
+ * Then destroy the one we created.
+ * Note: there's no chance of an open confict because the
+ * open has already been granted.
+ */
+ nofpbusyerror = nfs_open_file_set_busy(nofp, NULL);
+ nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
+ nofp->nof_stateid = newnofp->nof_stateid;
+ if (newnofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)
+ nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
+ nfs_open_file_clear_busy(newnofp);
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ }
+ if (!error) {
+ newnofp = NULL;
+ nofpbusyerror = 0;
+ /* mark the node as holding a create-initiated open */
+ nofp->nof_flags |= NFS_OPEN_FILE_CREATE;
+ nofp->nof_creator = current_thread();
+ if (nofpp)
+ *nofpp = nofp;
+ }
+ }
+ }
+ NVATTR_CLEANUP(&nvattr);
+ if (open && ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE))) {
+ if (!error && anp && !recall) {
+ /* stuff the delegation state in the node */
+ lck_mtx_lock(&anp->n_openlock);
+ anp->n_openflags &= ~N_DELEG_MASK;
+ anp->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ anp->n_dstateid = dstateid;
+ anp->n_dace = ace;
+ if (anp->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (anp->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, anp, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&anp->n_openlock);
+ } else {
+ /* give the delegation back */
+ if (anp) {
+ if (NFS_CMPFH(anp, fh.fh_data, fh.fh_len)) {
+ /* update delegation state and return it */
+ lck_mtx_lock(&anp->n_openlock);
+ anp->n_openflags &= ~N_DELEG_MASK;
+ anp->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
+ anp->n_dstateid = dstateid;
+ anp->n_dace = ace;
+ if (anp->n_dlink.tqe_next == NFSNOLIST) {
+ lck_mtx_lock(&nmp->nm_lock);
+ if (anp->n_dlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nmp->nm_delegations, anp, n_dlink);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ lck_mtx_unlock(&anp->n_openlock);
+ /* don't need to send a separate delegreturn for fh */
+ fh.fh_len = 0;
+ }
+ /* return anp's current delegation */
+ nfs4_delegation_return(anp, 0, thd, cred);
+ }
+ if (fh.fh_len) /* return fh's delegation if it wasn't for anp */
+ nfs4_delegreturn_rpc(nmp, fh.fh_data, fh.fh_len, &dstateid, 0, thd, cred);
+ }
+ }
+ if (open) {
+ if (newnofp) {
+ /* need to cleanup our temporary nofp */
+ nfs_open_file_clear_busy(newnofp);
+ nfs_open_file_destroy(newnofp);
+ newnofp = NULL;
+ } else if (nofp && !nofpbusyerror) {
+ nfs_open_file_clear_busy(nofp);
+ nofpbusyerror = ENOENT;
+ }
+ if (inuse && nfs_mount_state_in_use_end(nmp, error)) {
+ inuse = 0;
+ nofp = newnofp = NULL;
+ rflags = delegation = recall = eof = rlen = retlen = 0;
+ ace.ace_flags = 0;
+ s = sbuf;
+ slen = sizeof(sbuf);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ if (anp) {
+ vnode_put(NFSTOV(anp));
+ *anpp = anp = NULL;
+ }
+ hadattrdir = (adnp != NULL);
+ if (noopbusy) {
+ nfs_open_owner_clear_busy(noop);
+ noopbusy = 0;
+ }
+ goto restart;
+ }
+ if (noop) {
+ if (noopbusy) {
+ nfs_open_owner_clear_busy(noop);
+ noopbusy = 0;
+ }
+ nfs_open_owner_rele(noop);
+ }
}
+ if (!error && prefetch && nmrep.nmc_mhead) {
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_NVERIFY);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_READ);
+ nfsm_chain_get_32(error, &nmrep, eof);
+ nfsm_chain_get_32(error, &nmrep, retlen);
+ if (!error && anp) {
+ /*
+ * There can be one problem with doing the prefetch.
+ * Because we don't have the node before we start the RPC, we
+ * can't have the buffer busy while the READ is performed.
+ * So there is a chance that other I/O occured on the same
+ * range of data while we were performing this RPC. If that
+ * happens, then it's possible the data we have in the READ
+ * response is no longer up to date.
+ * Once we have the node and the buffer, we need to make sure
+ * that there's no chance we could be putting stale data in
+ * the buffer.
+ * So, we check if the range read is dirty or if any I/O may
+ * have occured on it while we were performing our RPC.
+ */
+ struct nfsbuf *bp = NULL;
+ int lastpg;
+ uint32_t pagemask;
+
+ retlen = MIN(retlen, rlen);
+
+ /* check if node needs size update or invalidation */
+ if (ISSET(anp->n_flag, NUPDATESIZE))
+ nfs_data_update_size(anp, 0);
+ if (!(error = nfs_node_lock(anp))) {
+ if (anp->n_flag & NNEEDINVALIDATE) {
+ anp->n_flag &= ~NNEEDINVALIDATE;
+ nfs_node_unlock(anp);
+ error = nfs_vinvalbuf(NFSTOV(anp), V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
+ if (!error) /* lets play it safe and just drop the data */
+ error = EIO;
+ } else {
+ nfs_node_unlock(anp);
+ }
+ }
- nfs_dulookup_finish(&dul, dnp, ctx);
+ /* calculate page mask for the range of data read */
+ lastpg = (trunc_page_32(retlen) - 1) / PAGE_SIZE;
+ pagemask = ((1 << (lastpg + 1)) - 1);
- /*
- * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry
- * if we can succeed in looking up the object.
- */
- if ((create_error == EEXIST) || (!create_error && !newvp)) {
- error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
- if (!error) {
- newvp = NFSTOV(np);
- if (vnode_vtype(newvp) != VLNK)
- error = EEXIST;
+ if (!error)
+ error = nfs_buf_get(anp, 0, nmp->nm_biosize, thd, NBLK_READ|NBLK_NOWAIT, &bp);
+ /* don't save the data if dirty or potential I/O conflict */
+ if (!error && bp && !bp->nb_dirtyoff && !(bp->nb_dirty & pagemask) &&
+ timevalcmp(&anp->n_lastio, &now, <)) {
+ OSAddAtomic64(1, &nfsstats.read_bios);
+ CLR(bp->nb_flags, (NB_DONE|NB_ASYNC));
+ SET(bp->nb_flags, NB_READ);
+ NFS_BUF_MAP(bp);
+ nfsm_chain_get_opaque(error, &nmrep, retlen, bp->nb_data);
+ if (error) {
+ bp->nb_error = error;
+ SET(bp->nb_flags, NB_ERROR);
+ } else {
+ bp->nb_offio = 0;
+ bp->nb_endio = rlen;
+ if ((retlen > 0) && (bp->nb_endio < (int)retlen))
+ bp->nb_endio = retlen;
+ if (eof || (retlen == 0)) {
+ /* zero out the remaining data (up to EOF) */
+ off_t rpcrem, eofrem, rem;
+ rpcrem = (rlen - retlen);
+ eofrem = anp->n_size - (NBOFF(bp) + retlen);
+ rem = (rpcrem < eofrem) ? rpcrem : eofrem;
+ if (rem > 0)
+ bzero(bp->nb_data + retlen, rem);
+ } else if ((retlen < rlen) && !ISSET(bp->nb_flags, NB_ERROR)) {
+ /* ugh... short read ... just invalidate for now... */
+ SET(bp->nb_flags, NB_INVAL);
+ }
+ }
+ nfs_buf_read_finish(bp);
+ microuptime(&anp->n_lastio);
+ }
+ if (bp)
+ nfs_buf_release(bp, 1);
}
+ error = 0; /* ignore any transient error in processing the prefetch */
}
- if (!lockerror)
- nfs_unlock(dnp);
- if (error) {
- if (newvp) {
- nfs_unlock(np);
- vnode_put(newvp);
+ if (adnp && !adbusyerror) {
+ nfs_node_clear_busy(adnp);
+ adbusyerror = ENOENT;
+ }
+ if (!busyerror) {
+ nfs_node_clear_busy(np);
+ busyerror = ENOENT;
+ }
+ if (adnp)
+ vnode_put(NFSTOV(adnp));
+ if (error && *anpp) {
+ vnode_put(NFSTOV(*anpp));
+ *anpp = NULL;
+ }
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/*
+ * Remove a named attribute.
+ */
+int
+nfs4_named_attr_remove(nfsnode_t np, nfsnode_t anp, const char *name, vfs_context_t ctx)
+{
+ nfsnode_t adnp = NULL;
+ struct nfsmount *nmp;
+ struct componentname cn;
+ struct vnop_remove_args vra;
+ int error, putanp = 0;
+
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(name, const, char *);
+ cn.cn_namelen = strlen(name);
+ cn.cn_nameiop = DELETE;
+ cn.cn_flags = 0;
+
+ if (!anp) {
+ error = nfs4_named_attr_get(np, &cn, NFS_OPEN_SHARE_ACCESS_NONE,
+ 0, ctx, &anp, NULL);
+ if ((!error && !anp) || (error == ENOATTR))
+ error = ENOENT;
+ if (error) {
+ if (anp) {
+ vnode_put(NFSTOV(anp));
+ anp = NULL;
+ }
+ goto out;
}
- } else {
- nfs_unlock(np);
- *npp = np;
+ putanp = 1;
+ }
+
+ if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx))))
+ goto out;
+ adnp = nfs4_named_attr_dir_get(np, 1, ctx);
+ nfs_node_clear_busy(np);
+ if (!adnp) {
+ error = ENOENT;
+ goto out;
}
+
+ vra.a_desc = &vnop_remove_desc;
+ vra.a_dvp = NFSTOV(adnp);
+ vra.a_vp = NFSTOV(anp);
+ vra.a_cnp = &cn;
+ vra.a_flags = 0;
+ vra.a_context = ctx;
+ error = nfs_vnop_remove(&vra);
+out:
+ if (adnp)
+ vnode_put(NFSTOV(adnp));
+ if (putanp)
+ vnode_put(NFSTOV(anp));
return (error);
}
int
-nfs4_vnop_mknod(
- struct vnop_mknod_args /* {
+nfs4_vnop_getxattr(
+ struct vnop_getxattr_args /* {
struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
+ vnode_t a_vp;
+ const char * a_name;
+ uio_t a_uio;
+ size_t *a_size;
+ int a_options;
vfs_context_t a_context;
} */ *ap)
{
- nfsnode_t np = NULL;
+ vfs_context_t ctx = ap->a_context;
struct nfsmount *nmp;
- int error;
+ struct nfs_vattr nvattr;
+ struct componentname cn;
+ nfsnode_t anp;
+ int error = 0, isrsrcfork;
- nmp = VTONMP(ap->a_dvp);
- if (!nmp)
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
return (ENXIO);
- if (!VATTR_IS_ACTIVE(ap->a_vap, va_type))
- return (EINVAL);
- switch (ap->a_vap->va_type) {
- case VBLK:
- case VCHR:
- case VFIFO:
- case VSOCK:
- break;
- default:
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
+ error = nfs_getattr(VTONFS(ap->a_vp), &nvattr, ctx, NGA_CACHED);
+ if (error)
+ return (error);
+ if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
+ !(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
+ return (ENOATTR);
+
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
+ cn.cn_namelen = strlen(ap->a_name);
+ cn.cn_nameiop = LOOKUP;
+ cn.cn_flags = MAKEENTRY;
+
+ /* we'll normally try to prefetch data for xattrs... the resource fork is really a stream */
+ isrsrcfork = (bcmp(ap->a_name, XATTR_RESOURCEFORK_NAME, sizeof(XATTR_RESOURCEFORK_NAME)) == 0);
+
+ error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_NONE,
+ !isrsrcfork ? NFS_GET_NAMED_ATTR_PREFETCH : 0, ctx, &anp, NULL);
+ if ((!error && !anp) || (error == ENOENT))
+ error = ENOATTR;
+ if (!error) {
+ if (ap->a_uio)
+ error = nfs_bioread(anp, ap->a_uio, 0, ctx);
+ else
+ *ap->a_size = anp->n_size;
}
-
- error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
- vtonfs_type(ap->a_vap->va_type, nmp->nm_vers), NULL, &np);
- if (!error)
- *ap->a_vpp = NFSTOV(np);
+ if (anp)
+ vnode_put(NFSTOV(anp));
return (error);
}
int
-nfs4_vnop_mkdir(
- struct vnop_mkdir_args /* {
+nfs4_vnop_setxattr(
+ struct vnop_setxattr_args /* {
struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
+ vnode_t a_vp;
+ const char * a_name;
+ uio_t a_uio;
+ int a_options;
vfs_context_t a_context;
} */ *ap)
{
- nfsnode_t np = NULL;
- int error;
+ vfs_context_t ctx = ap->a_context;
+ int options = ap->a_options;
+ uio_t uio = ap->a_uio;
+ const char *name = ap->a_name;
+ struct nfsmount *nmp;
+ struct componentname cn;
+ nfsnode_t anp = NULL;
+ int error = 0, closeerror = 0, flags, isrsrcfork, isfinderinfo, empty = 0, i;
+#define FINDERINFOSIZE 32
+ uint8_t finfo[FINDERINFOSIZE];
+ uint32_t *finfop;
+ struct nfs_open_file *nofp = NULL;
+ char uio_buf [ UIO_SIZEOF(1) ];
+ uio_t auio;
+ struct vnop_write_args vwa;
+
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
- error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
- NFDIR, NULL, &np);
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
+
+ if ((options & XATTR_CREATE) && (options & XATTR_REPLACE))
+ return (EINVAL);
+
+ /* XXX limitation based on need to back up uio on short write */
+ if (uio_iovcnt(uio) > 1) {
+ printf("nfs4_vnop_setxattr: iovcnt > 1\n");
+ return (EINVAL);
+ }
+
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(name, const, char *);
+ cn.cn_namelen = strlen(name);
+ cn.cn_nameiop = CREATE;
+ cn.cn_flags = MAKEENTRY;
+
+ isfinderinfo = (bcmp(name, XATTR_FINDERINFO_NAME, sizeof(XATTR_FINDERINFO_NAME)) == 0);
+ isrsrcfork = isfinderinfo ? 0 : (bcmp(name, XATTR_RESOURCEFORK_NAME, sizeof(XATTR_RESOURCEFORK_NAME)) == 0);
+ if (!isrsrcfork)
+ uio_setoffset(uio, 0);
+ if (isfinderinfo) {
+ if (uio_resid(uio) != sizeof(finfo))
+ return (ERANGE);
+ error = uiomove((char*)&finfo, sizeof(finfo), uio);
+ if (error)
+ return (error);
+ /* setting a FinderInfo of all zeroes means remove the FinderInfo */
+ empty = 1;
+ for (i=0, finfop=(uint32_t*)&finfo; i < (int)(sizeof(finfo)/sizeof(uint32_t)); i++)
+ if (finfop[i]) {
+ empty = 0;
+ break;
+ }
+ if (empty && !(options & (XATTR_CREATE|XATTR_REPLACE))) {
+ error = nfs4_named_attr_remove(VTONFS(ap->a_vp), anp, name, ctx);
+ if (error == ENOENT)
+ error = 0;
+ return (error);
+ }
+ /* first, let's see if we get a create/replace error */
+ }
+
+ /*
+ * create/open the xattr
+ *
+ * We need to make sure not to create it if XATTR_REPLACE.
+ * For all xattrs except the resource fork, we also want to
+ * truncate the xattr to remove any current data. We'll do
+ * that by setting the size to 0 on create/open.
+ */
+ flags = 0;
+ if (!(options & XATTR_REPLACE))
+ flags |= NFS_GET_NAMED_ATTR_CREATE;
+ if (options & XATTR_CREATE)
+ flags |= NFS_GET_NAMED_ATTR_CREATE_GUARDED;
+ if (!isrsrcfork)
+ flags |= NFS_GET_NAMED_ATTR_TRUNCATE;
+
+ error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_BOTH,
+ flags, ctx, &anp, &nofp);
+ if (!error && !anp)
+ error = ENOATTR;
+ if (error)
+ goto out;
+ /* grab the open state from the get/create/open */
+ if (nofp && !(error = nfs_open_file_set_busy(nofp, NULL))) {
+ nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
+ nofp->nof_creator = NULL;
+ nfs_open_file_clear_busy(nofp);
+ }
+
+ /* Setting an empty FinderInfo really means remove it, skip to the close/remove */
+ if (isfinderinfo && empty)
+ goto doclose;
+
+ /*
+ * Write the data out and flush.
+ *
+ * For FinderInfo, we've already copied the data to finfo, so do I/O from there.
+ */
+ vwa.a_desc = &vnop_write_desc;
+ vwa.a_vp = NFSTOV(anp);
+ vwa.a_uio = NULL;
+ vwa.a_ioflag = 0;
+ vwa.a_context = ctx;
+ if (isfinderinfo) {
+ auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_WRITE, &uio_buf, sizeof(uio_buf));
+ uio_addiov(auio, (uintptr_t)&finfo, sizeof(finfo));
+ vwa.a_uio = auio;
+ } else if (uio_resid(uio) > 0) {
+ vwa.a_uio = uio;
+ }
+ if (vwa.a_uio) {
+ error = nfs_vnop_write(&vwa);
+ if (!error)
+ error = nfs_flush(anp, MNT_WAIT, vfs_context_thread(ctx), 0);
+ }
+doclose:
+ /* Close the xattr. */
+ if (nofp) {
+ int busyerror = nfs_open_file_set_busy(nofp, NULL);
+ closeerror = nfs_close(anp, nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE, ctx);
+ if (!busyerror)
+ nfs_open_file_clear_busy(nofp);
+ }
+ if (!error && isfinderinfo && empty) { /* Setting an empty FinderInfo really means remove it */
+ error = nfs4_named_attr_remove(VTONFS(ap->a_vp), anp, name, ctx);
+ if (error == ENOENT)
+ error = 0;
+ }
if (!error)
- *ap->a_vpp = NFSTOV(np);
+ error = closeerror;
+out:
+ if (anp)
+ vnode_put(NFSTOV(anp));
+ if (error == ENOENT)
+ error = ENOATTR;
return (error);
}
int
-nfs4_vnop_symlink(
- struct vnop_symlink_args /* {
+nfs4_vnop_removexattr(
+ struct vnop_removexattr_args /* {
struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
- char *a_target;
+ vnode_t a_vp;
+ const char * a_name;
+ int a_options;
vfs_context_t a_context;
} */ *ap)
{
- nfsnode_t np = NULL;
+ struct nfsmount *nmp = VTONMP(ap->a_vp);
int error;
- error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
- NFLNK, ap->a_target, &np);
- if (!error)
- *ap->a_vpp = NFSTOV(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
+
+ error = nfs4_named_attr_remove(VTONFS(ap->a_vp), NULL, ap->a_name, ap->a_context);
+ if (error == ENOENT)
+ error = ENOATTR;
return (error);
}
int
-nfs4_vnop_link(
- struct vnop_link_args /* {
+nfs4_vnop_listxattr(
+ struct vnop_listxattr_args /* {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
- vnode_t a_tdvp;
- struct componentname *a_cnp;
+ uio_t a_uio;
+ size_t *a_size;
+ int a_options;
vfs_context_t a_context;
} */ *ap)
{
vfs_context_t ctx = ap->a_context;
- vnode_t vp = ap->a_vp;
- vnode_t tdvp = ap->a_tdvp;
- struct componentname *cnp = ap->a_cnp;
- int error = 0, status;
+ nfsnode_t np = VTONFS(ap->a_vp);
+ uio_t uio = ap->a_uio;
+ nfsnode_t adnp = NULL;
struct nfsmount *nmp;
- nfsnode_t np = VTONFS(vp);
- nfsnode_t tdnp = VTONFS(tdvp);
- int nfsvers, numops;
- u_int64_t xid, savedxid;
- struct nfsm_chain nmreq, nmrep;
-
- if (vnode_mount(vp) != vnode_mount(tdvp))
- return (EXDEV);
+ int error, done, i;
+ struct nfs_vattr nvattr;
+ uint64_t cookie, nextcookie, lbn = 0;
+ struct nfsbuf *bp = NULL;
+ struct nfs_dir_buf_header *ndbhp;
+ struct direntry *dp;
- nmp = VTONMP(vp);
- if (!nmp)
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
return (ENXIO);
- nfsvers = nmp->nm_vers;
- /*
- * Push all writes to the server, so that the attribute cache
- * doesn't get "out of sync" with the server.
- * XXX There should be a better way!
- */
- nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
- error = nfs_lock2(tdnp, np, NFS_NODE_LOCK_EXCLUSIVE);
+ error = nfs_getattr(np, &nvattr, ctx, NGA_CACHED);
if (error)
return (error);
+ if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
+ !(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
+ return (0);
- nfsm_chain_null(&nmreq);
- nfsm_chain_null(&nmrep);
+ if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx))))
+ return (error);
+ adnp = nfs4_named_attr_dir_get(np, 1, ctx);
+ nfs_node_clear_busy(np);
+ if (!adnp)
+ goto out;
+
+ if ((error = nfs_node_lock(adnp)))
+ goto out;
+
+ if (adnp->n_flag & NNEEDINVALIDATE) {
+ adnp->n_flag &= ~NNEEDINVALIDATE;
+ nfs_invaldir(adnp);
+ nfs_node_unlock(adnp);
+ error = nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1);
+ if (!error)
+ error = nfs_node_lock(adnp);
+ if (error)
+ goto out;
+ }
- // PUTFH(SOURCE), SAVEFH, PUTFH(DIR), LINK, GETATTR(DIR), RESTOREFH, GETATTR
- numops = 7;
- nfsm_chain_build_alloc_init(error, &nmreq, 29 * NFSX_UNSIGNED + cnp->cn_namelen);
- nfsm_chain_add_compound_header(error, &nmreq, "link", numops);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
- nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_LINK);
- nfsm_chain_add_string(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
- numops--;
- nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
- nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
- NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
- nfsm_chain_build_done(error, &nmreq);
- nfsm_assert(error, (numops == 0), EPROTO);
- nfsmout_if(error);
- error = nfs_request(tdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &nmrep, &xid, &status);
+ /*
+ * check for need to invalidate when (re)starting at beginning
+ */
+ if (adnp->n_flag & NMODIFIED) {
+ nfs_invaldir(adnp);
+ nfs_node_unlock(adnp);
+ if ((error = nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1)))
+ goto out;
+ } else {
+ nfs_node_unlock(adnp);
+ }
+ /* nfs_getattr() will check changed and purge caches */
+ if ((error = nfs_getattr(adnp, &nvattr, ctx, NGA_UNCACHED)))
+ goto out;
+
+ if (uio && (uio_resid(uio) == 0))
+ goto out;
+
+ done = 0;
+ nextcookie = lbn = 0;
+
+ while (!error && !done) {
+ OSAddAtomic64(1, &nfsstats.biocache_readdirs);
+ cookie = nextcookie;
+getbuffer:
+ error = nfs_buf_get(adnp, lbn, NFS_DIRBLKSIZ, vfs_context_thread(ctx), NBLK_READ, &bp);
+ if (error)
+ goto out;
+ ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
+ if (!ISSET(bp->nb_flags, NB_CACHE) || !ISSET(ndbhp->ndbh_flags, NDB_FULL)) {
+ if (!ISSET(bp->nb_flags, NB_CACHE)) { /* initialize the buffer */
+ ndbhp->ndbh_flags = 0;
+ ndbhp->ndbh_count = 0;
+ ndbhp->ndbh_entry_end = sizeof(*ndbhp);
+ ndbhp->ndbh_ncgen = adnp->n_ncgen;
+ }
+ error = nfs_buf_readdir(bp, ctx);
+ if (error == NFSERR_DIRBUFDROPPED)
+ goto getbuffer;
+ if (error)
+ nfs_buf_release(bp, 1);
+ if (error && (error != ENXIO) && (error != ETIMEDOUT) && (error != EINTR) && (error != ERESTART)) {
+ if (!nfs_node_lock(adnp)) {
+ nfs_invaldir(adnp);
+ nfs_node_unlock(adnp);
+ }
+ nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1);
+ if (error == NFSERR_BAD_COOKIE)
+ error = ENOENT;
+ }
+ if (error)
+ goto out;
+ }
- nfsm_chain_skip_tag(error, &nmrep);
- nfsm_chain_get_32(error, &nmrep, numops);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_LINK);
- nfsm_chain_check_change_info(error, &nmrep, tdnp);
- /* directory attributes: if we don't get them, make sure to invalidate */
- nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- savedxid = xid;
- nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, NULL, &xid);
- if (error)
- NATTRINVALIDATE(tdnp);
- /* link attributes: if we don't get them, make sure to invalidate */
- nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
- nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
- xid = savedxid;
- nfsm_chain_loadattr(error, &nmrep, np, nfsvers, NULL, &xid);
- if (error)
- NATTRINVALIDATE(np);
-nfsmout:
- nfsm_chain_cleanup(&nmreq);
- nfsm_chain_cleanup(&nmrep);
- tdnp->n_flag |= NMODIFIED;
- /* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. */
- if (error == EEXIST)
- error = 0;
- if (!error && (tdnp->n_flag & NNEGNCENTRIES)) {
- tdnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge_negatives(tdvp);
+ /* go through all the entries copying/counting */
+ dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
+ for (i=0; i < ndbhp->ndbh_count; i++) {
+ if (!xattr_protected(dp->d_name)) {
+ if (uio == NULL) {
+ *ap->a_size += dp->d_namlen + 1;
+ } else if (uio_resid(uio) < (dp->d_namlen + 1)) {
+ error = ERANGE;
+ } else {
+ error = uiomove(dp->d_name, dp->d_namlen+1, uio);
+ if (error && (error != EFAULT))
+ error = ERANGE;
+ }
+ }
+ nextcookie = dp->d_seekoff;
+ dp = NFS_DIRENTRY_NEXT(dp);
+ }
+
+ if (i == ndbhp->ndbh_count) {
+ /* hit end of buffer, move to next buffer */
+ lbn = nextcookie;
+ /* if we also hit EOF, we're done */
+ if (ISSET(ndbhp->ndbh_flags, NDB_EOF))
+ done = 1;
+ }
+ if (!error && !done && (nextcookie == cookie)) {
+ printf("nfs readdir cookie didn't change 0x%llx, %d/%d\n", cookie, i, ndbhp->ndbh_count);
+ error = EIO;
+ }
+ nfs_buf_release(bp, 1);
}
- nfs_unlock2(tdnp, np);
+out:
+ if (adnp)
+ vnode_put(NFSTOV(adnp));
return (error);
}
+#if NAMEDSTREAMS
int
-nfs4_vnop_rmdir(
- struct vnop_rmdir_args /* {
+nfs4_vnop_getnamedstream(
+ struct vnop_getnamedstream_args /* {
struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
vnode_t a_vp;
- struct componentname *a_cnp;
+ vnode_t *a_svpp;
+ const char *a_name;
+ enum nsoperation a_operation;
+ int a_flags;
vfs_context_t a_context;
} */ *ap)
{
vfs_context_t ctx = ap->a_context;
- vnode_t vp = ap->a_vp;
- vnode_t dvp = ap->a_dvp;
- struct componentname *cnp = ap->a_cnp;
+ struct nfsmount *nmp;
+ struct nfs_vattr nvattr;
+ struct componentname cn;
+ nfsnode_t anp;
int error = 0;
- nfsnode_t np = VTONFS(vp);
- nfsnode_t dnp = VTONFS(dvp);
- struct nfs_vattr dnvattr;
- struct nfs_dulookup dul;
- if (vnode_vtype(vp) != VDIR)
- return (EINVAL);
-
- nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen);
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
- if ((error = nfs_lock2(dnp, np, NFS_NODE_LOCK_EXCLUSIVE)))
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
+ error = nfs_getattr(VTONFS(ap->a_vp), &nvattr, ctx, NGA_CACHED);
+ if (error)
return (error);
+ if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
+ !(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
+ return (ENOATTR);
+
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
+ cn.cn_namelen = strlen(ap->a_name);
+ cn.cn_nameiop = LOOKUP;
+ cn.cn_flags = MAKEENTRY;
+
+ error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_NONE,
+ 0, ctx, &anp, NULL);
+ if ((!error && !anp) || (error == ENOENT))
+ error = ENOATTR;
+ if (!error && anp)
+ *ap->a_svpp = NFSTOV(anp);
+ else if (anp)
+ vnode_put(NFSTOV(anp));
+ return (error);
+}
- nfs_dulookup_start(&dul, dnp, ctx);
+int
+nfs4_vnop_makenamedstream(
+ struct vnop_makenamedstream_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t *a_svpp;
+ vnode_t a_vp;
+ const char *a_name;
+ int a_flags;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ vfs_context_t ctx = ap->a_context;
+ struct nfsmount *nmp;
+ struct componentname cn;
+ nfsnode_t anp;
+ int error = 0;
- error = nfs4_remove_rpc(dnp, cnp->cn_nameptr, cnp->cn_namelen,
- vfs_context_thread(ctx), vfs_context_ucred(ctx));
+ nmp = VTONMP(ap->a_vp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
- cache_purge(vp);
- if (!nfs_getattr(dnp, &dnvattr, ctx, 1)) {
- if (NFS_CHANGED_NC(NFS_VER4, dnp, &dnvattr)) {
- dnp->n_flag &= ~NNEGNCENTRIES;
- cache_purge(dvp);
- NFS_CHANGED_UPDATE_NC(NFS_VER4, dnp, &dnvattr);
- }
- }
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
- nfs_dulookup_finish(&dul, dnp, ctx);
- nfs_unlock2(dnp, np);
+ bzero(&cn, sizeof(cn));
+ cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
+ cn.cn_namelen = strlen(ap->a_name);
+ cn.cn_nameiop = CREATE;
+ cn.cn_flags = MAKEENTRY;
+
+ error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_BOTH,
+ NFS_GET_NAMED_ATTR_CREATE, ctx, &anp, NULL);
+ if ((!error && !anp) || (error == ENOENT))
+ error = ENOATTR;
+ if (!error && anp)
+ *ap->a_svpp = NFSTOV(anp);
+ else if (anp)
+ vnode_put(NFSTOV(anp));
+ return (error);
+}
+
+int
+nfs4_vnop_removenamedstream(
+ struct vnop_removenamedstream_args /* {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ vnode_t a_svp;
+ const char *a_name;
+ int a_flags;
+ vfs_context_t a_context;
+ } */ *ap)
+{
+ struct nfsmount *nmp = VTONMP(ap->a_vp);
+ nfsnode_t np = ap->a_vp ? VTONFS(ap->a_vp) : NULL;
+ nfsnode_t anp = ap->a_svp ? VTONFS(ap->a_svp) : NULL;
+
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
/*
- * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
+ * Given that a_svp is a named stream, checking for
+ * named attribute support is kinda pointless.
*/
- if (error == ENOENT)
- error = 0;
- if (!error) {
- /*
- * remove nfsnode from hash now so we can't accidentally find it
- * again if another object gets created with the same filehandle
- * before this vnode gets reclaimed
- */
- lck_mtx_lock(nfs_node_hash_mutex);
- if (np->n_hflag & NHHASHED) {
- LIST_REMOVE(np, n_hash);
- np->n_hflag &= ~NHHASHED;
- FSDBG(266, 0, np, np->n_flag, 0xb1eb1e);
- }
- lck_mtx_unlock(nfs_node_hash_mutex);
- }
- return (error);
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
+ return (ENOTSUP);
+
+ return (nfs4_named_attr_remove(np, anp, ap->a_name, ap->a_context));
}
+#endif
projects / apple / xnu.git / blobdiff