/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/stat.h>
#include <sys/malloc.h>
#include <sys/syscall.h>
-#include <sys/sysctl.h>
#include <sys/ubc_internal.h>
#include <sys/fcntl.h>
-#include <sys/uio_internal.h>
+#include <sys/uio.h>
#include <sys/domain.h>
#include <libkern/OSAtomic.h>
+#include <kern/thread_call.h>
#include <sys/vm.h>
#include <sys/vmparam.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
+#if NFSCLIENT
+#define _NFS_XDR_SUBS_FUNCS_ /* define this to get xdrbuf function definitions */
+#endif
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
+#include <nfs/nfs_gss.h>
#include <nfs/nfsmount.h>
-#include <nfs/nfsrtt.h>
#include <nfs/nfs_lock.h>
#include <miscfs/specfs/specdev.h>
#include <netinet/in.h>
-#if ISO
-#include <netiso/iso.h>
-#endif
+#include <net/kpi_interface.h>
-#include <sys/kdebug.h>
+#include <sys/utfconv.h>
-SYSCTL_DECL(_vfs_generic);
-SYSCTL_NODE(_vfs_generic, OID_AUTO, nfs, CTLFLAG_RW, 0, "nfs hinge");
+/*
+ * NFS globals
+ */
+struct nfsstats __attribute__((aligned(8))) nfsstats;
+size_t nfs_mbuf_mhlen = 0, nfs_mbuf_minclsize = 0;
-#define FSDBG(A, B, C, D, E) \
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_NONE, \
- (int)(B), (int)(C), (int)(D), (int)(E), 0)
-#define FSDBG_TOP(A, B, C, D, E) \
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_START, \
- (int)(B), (int)(C), (int)(D), (int)(E), 0)
-#define FSDBG_BOT(A, B, C, D, E) \
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_END, \
- (int)(B), (int)(C), (int)(D), (int)(E), 0)
/*
- * Data items converted to xdr at startup, since they are constant
- * This is kinda hokey, but may save a little time doing byte swaps
+ * functions to convert between NFS and VFS types
*/
-u_long nfs_xdrneg1;
-u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
- rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
- rpc_auth_kerb;
-u_long nfs_prog, nfs_true, nfs_false;
-__private_extern__ int nfs_mbuf_mlen = 0, nfs_mbuf_mhlen = 0,
- nfs_mbuf_minclsize = 0, nfs_mbuf_mclbytes = 0;
-
-/* And other global data */
-static u_long nfs_xid = 0;
-u_long nfs_xidwrap = 0; /* to build a (non-wwrapping) 64 bit xid */
-static enum vtype nv2tov_type[8]= {
- VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON
-};
-enum vtype nv3tov_type[8]= {
- VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO
-};
+nfstype
+vtonfs_type(enum vtype vtype, int nfsvers)
+{
+ switch (vtype) {
+ case VNON:
+ return NFNON;
+ case VREG:
+ return NFREG;
+ case VDIR:
+ return NFDIR;
+ case VBLK:
+ return NFBLK;
+ case VCHR:
+ return NFCHR;
+ case VLNK:
+ return NFLNK;
+ case VSOCK:
+ if (nfsvers > NFS_VER2)
+ return NFSOCK;
+ case VFIFO:
+ if (nfsvers > NFS_VER2)
+ return NFFIFO;
+ case VBAD:
+ case VSTR:
+ case VCPLX:
+ default:
+ return NFNON;
+ }
+}
+
+enum vtype
+nfstov_type(nfstype nvtype, int nfsvers)
+{
+ switch (nvtype) {
+ case NFNON:
+ return VNON;
+ case NFREG:
+ return VREG;
+ case NFDIR:
+ return VDIR;
+ case NFBLK:
+ return VBLK;
+ case NFCHR:
+ return VCHR;
+ case NFLNK:
+ return VLNK;
+ case NFSOCK:
+ if (nfsvers > NFS_VER2)
+ return VSOCK;
+ case NFFIFO:
+ if (nfsvers > NFS_VER2)
+ return VFIFO;
+ case NFATTRDIR:
+ if (nfsvers > NFS_VER3)
+ return VDIR;
+ case NFNAMEDATTR:
+ if (nfsvers > NFS_VER3)
+ return VREG;
+ default:
+ return VNON;
+ }
+}
+
+int
+vtonfsv2_mode(enum vtype vtype, mode_t m)
+{
+ switch (vtype) {
+ case VNON:
+ case VREG:
+ case VDIR:
+ case VBLK:
+ case VCHR:
+ case VLNK:
+ case VSOCK:
+ return vnode_makeimode(vtype, m);
+ case VFIFO:
+ return vnode_makeimode(VCHR, m);
+ case VBAD:
+ case VSTR:
+ case VCPLX:
+ default:
+ return vnode_makeimode(VNON, m);
+ }
+}
+
+#if NFSSERVER
-int nfs_mount_type;
-int nfs_ticks;
-
-lck_grp_t *nfsd_lck_grp;
-lck_grp_attr_t *nfsd_lck_grp_attr;
-lck_attr_t *nfsd_lck_attr;
-lck_mtx_t *nfsd_mutex;
-
-lck_grp_attr_t *nfs_slp_group_attr;
-lck_attr_t *nfs_slp_lock_attr;
-lck_grp_t *nfs_slp_rwlock_group;
-lck_grp_t *nfs_slp_mutex_group;
-
-struct nfs_reqq nfs_reqq;
-struct nfssvc_sockhead nfssvc_sockhead, nfssvc_deadsockhead;
-struct nfsd_head nfsd_head;
-int nfsd_head_flag;
-
-struct nfsexpfslist nfs_exports;
-struct nfsexphashhead *nfsexphashtbl;
-u_long nfsexphash;
-lck_grp_attr_t *nfs_export_group_attr;
-lck_attr_t *nfs_export_lock_attr;
-lck_grp_t *nfs_export_rwlock_group;
-lck_rw_t nfs_export_rwlock;
-
-#ifndef NFS_NOSERVER
/*
* Mapping of old NFS Version 2 RPC numbers to generic numbers.
*/
NFSPROC_NOOP
};
-#endif /* NFS_NOSERVER */
+#endif /* NFSSERVER */
+
/*
* and the reverse mapping from generic to Version 2 procedure numbers
*/
NFSV2PROC_NOOP
};
-#ifndef NFS_NOSERVER
+
/*
- * Maps errno values to nfs error numbers.
- * Use NFSERR_IO as the catch all for ones not specifically defined in
- * RFC 1094.
+ * initialize NFS's cache of mbuf constants
*/
-static u_char nfsrv_v2errmap[ELAST] = {
- NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
- NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
- NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
- NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
-};
+void
+nfs_mbuf_init(void)
+{
+ struct mbuf_stat ms;
+
+ mbuf_stats(&ms);
+ nfs_mbuf_mhlen = ms.mhlen;
+ nfs_mbuf_minclsize = ms.minclsize;
+}
+
+#if NFSSERVER
/*
- * Maps errno values to nfs error numbers.
- * Although it is not obvious whether or not NFS clients really care if
- * a returned error value is in the specified list for the procedure, the
- * safest thing to do is filter them appropriately. For Version 2, the
- * X/Open XNFS document is the only specification that defines error values
- * for each RPC (The RFC simply lists all possible error values for all RPCs),
- * so I have decided to not do this for Version 2.
- * The first entry is the default error return and the rest are the valid
- * errors for that RPC in increasing numeric order.
+ * allocate a list of mbufs to hold the given amount of data
*/
-static short nfsv3err_null[] = {
- 0,
- 0,
-};
+int
+nfsm_mbuf_get_list(size_t size, mbuf_t *mp, int *mbcnt)
+{
+ int error, cnt;
+ mbuf_t mhead, mlast, m;
+ size_t len, mlen;
-static short nfsv3err_getattr[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
+ error = cnt = 0;
+ mhead = mlast = NULL;
+ len = 0;
-static short nfsv3err_setattr[] = {
- NFSERR_IO,
- NFSERR_PERM,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_INVAL,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOT_SYNC,
- NFSERR_SERVERFAULT,
- 0,
-};
+ while (len < size) {
+ nfsm_mbuf_get(error, &m, (size - len));
+ if (error)
+ break;
+ if (!mhead)
+ mhead = m;
+ if (mlast && ((error = mbuf_setnext(mlast, m)))) {
+ mbuf_free(m);
+ break;
+ }
+ mlen = mbuf_maxlen(m);
+ if ((len + mlen) > size)
+ mlen = size - len;
+ mbuf_setlen(m, mlen);
+ len += mlen;
+ cnt++;
+ mlast = m;
+ }
-static short nfsv3err_lookup[] = {
- NFSERR_IO,
- NFSERR_NOENT,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_NOTDIR,
- NFSERR_NAMETOL,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
+ if (!error) {
+ *mp = mhead;
+ *mbcnt = cnt;
+ }
+ return (error);
+}
-static short nfsv3err_access[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
+#endif /* NFSSERVER */
-static short nfsv3err_readlink[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_INVAL,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
+/*
+ * nfsm_chain_new_mbuf()
+ *
+ * Add a new mbuf to the given chain.
+ */
+int
+nfsm_chain_new_mbuf(struct nfsm_chain *nmc, size_t sizehint)
+{
+ mbuf_t mb;
+ int error = 0;
-static short nfsv3err_read[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_NXIO,
- NFSERR_ACCES,
- NFSERR_INVAL,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
+ if (nmc->nmc_flags & NFSM_CHAIN_FLAG_ADD_CLUSTERS)
+ sizehint = nfs_mbuf_minclsize;
-static short nfsv3err_write[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_INVAL,
- NFSERR_FBIG,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
+ /* allocate a new mbuf */
+ nfsm_mbuf_get(error, &mb, sizehint);
+ if (error)
+ return (error);
+ if (mb == NULL)
+ panic("got NULL mbuf?");
+
+ /* do we have a current mbuf? */
+ if (nmc->nmc_mcur) {
+ /* first cap off current mbuf */
+ mbuf_setlen(nmc->nmc_mcur, nmc->nmc_ptr - (caddr_t)mbuf_data(nmc->nmc_mcur));
+ /* then append the new mbuf */
+ error = mbuf_setnext(nmc->nmc_mcur, mb);
+ if (error) {
+ mbuf_free(mb);
+ return (error);
+ }
+ }
-static short nfsv3err_create[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_NOTDIR,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
+ /* set up for using the new mbuf */
+ nmc->nmc_mcur = mb;
+ nmc->nmc_ptr = mbuf_data(mb);
+ nmc->nmc_left = mbuf_trailingspace(mb);
-static short nfsv3err_mkdir[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_NOTDIR,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
+ return (0);
+}
-static short nfsv3err_symlink[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_NOTDIR,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
+/*
+ * nfsm_chain_add_opaque_f()
+ *
+ * Add "len" bytes of opaque data pointed to by "buf" to the given chain.
+ */
+int
+nfsm_chain_add_opaque_f(struct nfsm_chain *nmc, const u_char *buf, uint32_t len)
+{
+ uint32_t paddedlen, tlen;
+ int error;
-static short nfsv3err_mknod[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_NOTDIR,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- NFSERR_BADTYPE,
- 0,
-};
+ paddedlen = nfsm_rndup(len);
-static short nfsv3err_remove[] = {
- NFSERR_IO,
- NFSERR_NOENT,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_NOTDIR,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_rmdir[] = {
- NFSERR_IO,
- NFSERR_NOENT,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_NOTDIR,
- NFSERR_INVAL,
- NFSERR_ROFS,
- NFSERR_NAMETOL,
- NFSERR_NOTEMPTY,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_rename[] = {
- NFSERR_IO,
- NFSERR_NOENT,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_XDEV,
- NFSERR_NOTDIR,
- NFSERR_ISDIR,
- NFSERR_INVAL,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_MLINK,
- NFSERR_NAMETOL,
- NFSERR_NOTEMPTY,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_link[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_EXIST,
- NFSERR_XDEV,
- NFSERR_NOTDIR,
- NFSERR_INVAL,
- NFSERR_NOSPC,
- NFSERR_ROFS,
- NFSERR_MLINK,
- NFSERR_NAMETOL,
- NFSERR_DQUOT,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_NOTSUPP,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_readdir[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_NOTDIR,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_BAD_COOKIE,
- NFSERR_TOOSMALL,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_readdirplus[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_ACCES,
- NFSERR_NOTDIR,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_BAD_COOKIE,
- NFSERR_NOTSUPP,
- NFSERR_TOOSMALL,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_fsstat[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_fsinfo[] = {
- NFSERR_STALE,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_pathconf[] = {
- NFSERR_STALE,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short nfsv3err_commit[] = {
- NFSERR_IO,
- NFSERR_IO,
- NFSERR_STALE,
- NFSERR_BADHANDLE,
- NFSERR_SERVERFAULT,
- 0,
-};
-
-static short *nfsrv_v3errmap[] = {
- nfsv3err_null,
- nfsv3err_getattr,
- nfsv3err_setattr,
- nfsv3err_lookup,
- nfsv3err_access,
- nfsv3err_readlink,
- nfsv3err_read,
- nfsv3err_write,
- nfsv3err_create,
- nfsv3err_mkdir,
- nfsv3err_symlink,
- nfsv3err_mknod,
- nfsv3err_remove,
- nfsv3err_rmdir,
- nfsv3err_rename,
- nfsv3err_link,
- nfsv3err_readdir,
- nfsv3err_readdirplus,
- nfsv3err_fsstat,
- nfsv3err_fsinfo,
- nfsv3err_pathconf,
- nfsv3err_commit,
-};
-
-#endif /* NFS_NOSERVER */
-
-extern struct nfsrtt nfsrtt;
-extern struct nfsstats nfsstats;
-extern nfstype nfsv2_type[9];
-extern nfstype nfsv3_type[9];
-extern struct nfsnodehashhead *nfsnodehashtbl;
-extern u_long nfsnodehash;
-
-
-LIST_HEAD(nfsnodehashhead, nfsnode);
+ while (paddedlen) {
+ if (!nmc->nmc_left) {
+ error = nfsm_chain_new_mbuf(nmc, paddedlen);
+ if (error)
+ return (error);
+ }
+ tlen = MIN(nmc->nmc_left, paddedlen);
+ if (tlen) {
+ if (len) {
+ if (tlen > len)
+ tlen = len;
+ bcopy(buf, nmc->nmc_ptr, tlen);
+ } else {
+ bzero(nmc->nmc_ptr, tlen);
+ }
+ nmc->nmc_ptr += tlen;
+ nmc->nmc_left -= tlen;
+ paddedlen -= tlen;
+ if (len) {
+ buf += tlen;
+ len -= tlen;
+ }
+ }
+ }
+ return (0);
+}
/*
- * Create the header for an rpc request packet
- * The hsiz is the size of the rest of the nfs request header.
- * (just used to decide if a cluster is a good idea)
+ * nfsm_chain_add_opaque_nopad_f()
+ *
+ * Add "len" bytes of opaque data pointed to by "buf" to the given chain.
+ * Do not XDR pad.
*/
int
-nfsm_reqh(int hsiz, caddr_t *bposp, mbuf_t *mbp)
+nfsm_chain_add_opaque_nopad_f(struct nfsm_chain *nmc, const u_char *buf, uint32_t len)
{
+ uint32_t tlen;
int error;
- *mbp = NULL;
- if (hsiz >= nfs_mbuf_minclsize)
- error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, mbp);
- else
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, mbp);
- if (error)
- return (error);
- *bposp = mbuf_data(*mbp);
+ while (len > 0) {
+ if (nmc->nmc_left <= 0) {
+ error = nfsm_chain_new_mbuf(nmc, len);
+ if (error)
+ return (error);
+ }
+ tlen = MIN(nmc->nmc_left, len);
+ bcopy(buf, nmc->nmc_ptr, tlen);
+ nmc->nmc_ptr += tlen;
+ nmc->nmc_left -= tlen;
+ len -= tlen;
+ buf += tlen;
+ }
return (0);
}
/*
- * Build the RPC header and fill in the authorization info.
- * The authorization string argument is only used when the credentials
- * come from outside of the kernel.
- * Returns the head of the mbuf list.
+ * nfsm_chain_add_uio()
+ *
+ * Add "len" bytes of data from "uio" to the given chain.
*/
int
-nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len,
- verf_str, mrest, mrest_len, mbp, xidp, mreqp)
- kauth_cred_t cr;
- int nmflag;
- int procid;
- int auth_type;
- int auth_len;
- char *auth_str;
- int verf_len;
- char *verf_str;
- mbuf_t mrest;
- int mrest_len;
- mbuf_t *mbp;
- u_long *xidp;
- mbuf_t *mreqp;
+nfsm_chain_add_uio(struct nfsm_chain *nmc, uio_t uio, uint32_t len)
{
- mbuf_t mb;
- u_long *tl;
- caddr_t bpos;
- int i, error, len;
- mbuf_t mreq, mb2;
- int siz, grpsiz, authsiz, mlen;
- struct timeval tv;
-
- authsiz = nfsm_rndup(auth_len);
- len = authsiz + 10 * NFSX_UNSIGNED;
- if (len >= nfs_mbuf_minclsize) {
- error = mbuf_getpacket(MBUF_WAITOK, &mb);
- } else {
- error = mbuf_gethdr(MBUF_WAITOK, MBUF_TYPE_DATA, &mb);
- if (!error) {
- if (len < nfs_mbuf_mhlen)
- mbuf_align_32(mb, len);
- else
- mbuf_align_32(mb, 8 * NFSX_UNSIGNED);
- }
- }
- if (error) {
- /* unable to allocate packet */
- /* XXX nfsstat? */
- return (error);
- }
- mreq = mb;
- bpos = mbuf_data(mb);
-
- /*
- * First the RPC header.
- */
- nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED);
-
- /*
- * derive initial xid from system time
- */
- if (!nfs_xid) {
- /*
- * Note: it's OK if this code inits nfs_xid to 0 (for example,
- * due to a broken clock) because we immediately increment it
- * and we guarantee to never use xid 0. So, nfs_xid should only
- * ever be 0 the first time this function is called.
- */
- microtime(&tv);
- nfs_xid = tv.tv_sec << 12;
- }
- /*
- * Skip zero xid if it should ever happen.
- */
- if (++nfs_xid == 0) {
- nfs_xidwrap++;
- nfs_xid++;
- }
+ uint32_t paddedlen, tlen;
+ int error;
- *tl++ = *xidp = txdr_unsigned(nfs_xid);
- *tl++ = rpc_call;
- *tl++ = rpc_vers;
- *tl++ = txdr_unsigned(NFS_PROG);
- if (nmflag & NFSMNT_NFSV3)
- *tl++ = txdr_unsigned(NFS_VER3);
- else
- *tl++ = txdr_unsigned(NFS_VER2);
- if (nmflag & NFSMNT_NFSV3)
- *tl++ = txdr_unsigned(procid);
- else
- *tl++ = txdr_unsigned(nfsv2_procid[procid]);
+ paddedlen = nfsm_rndup(len);
- /*
- * And then the authorization cred.
- */
- *tl++ = txdr_unsigned(auth_type);
- *tl = txdr_unsigned(authsiz);
- switch (auth_type) {
- case RPCAUTH_UNIX:
- nfsm_build(tl, u_long *, auth_len);
- *tl++ = 0; /* stamp ?? */
- *tl++ = 0; /* NULL hostname */
- *tl++ = txdr_unsigned(kauth_cred_getuid(cr));
- *tl++ = txdr_unsigned(cr->cr_groups[0]);
- grpsiz = (auth_len >> 2) - 5;
- *tl++ = txdr_unsigned(grpsiz);
- for (i = 1; i <= grpsiz; i++)
- *tl++ = txdr_unsigned(cr->cr_groups[i]);
- break;
- case RPCAUTH_KERB4:
- siz = auth_len;
- mlen = mbuf_len(mb);
- while (siz > 0) {
- if (mbuf_trailingspace(mb) == 0) {
- mb2 = NULL;
- if (siz >= nfs_mbuf_minclsize)
- error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
- else
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
- if (!error)
- error = mbuf_setnext(mb, mb2);
- if (error) {
- mbuf_freem(mreq);
- return (error);
- }
- mb = mb2;
- mlen = 0;
- bpos = mbuf_data(mb);
- }
- i = min(siz, mbuf_trailingspace(mb));
- bcopy(auth_str, bpos, i);
- mlen += i;
- mbuf_setlen(mb, mlen);
- auth_str += i;
- bpos += i;
- siz -= i;
- }
- if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) {
- for (i = 0; i < siz; i++)
- *bpos++ = '\0';
- mlen += siz;
- mbuf_setlen(mb, mlen);
+ while (paddedlen) {
+ if (!nmc->nmc_left) {
+ error = nfsm_chain_new_mbuf(nmc, paddedlen);
+ if (error)
+ return (error);
}
- break;
- };
-
- /*
- * And the verifier...
- */
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
- if (verf_str) {
- mlen = mbuf_len(mb);
- *tl++ = txdr_unsigned(RPCAUTH_KERB4);
- *tl = txdr_unsigned(verf_len);
- siz = verf_len;
- while (siz > 0) {
- if (mbuf_trailingspace(mb) == 0) {
- mb2 = NULL;
- if (siz >= nfs_mbuf_minclsize)
- error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
- else
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
- if (!error)
- error = mbuf_setnext(mb, mb2);
- if (error) {
- mbuf_freem(mreq);
- return (error);
- }
- mb = mb2;
- mlen = 0;
- bpos = mbuf_data(mb);
+ tlen = MIN(nmc->nmc_left, paddedlen);
+ if (tlen) {
+ if (len) {
+ if (tlen > len)
+ tlen = len;
+ uiomove(nmc->nmc_ptr, tlen, uio);
+ } else {
+ bzero(nmc->nmc_ptr, tlen);
}
- i = min(siz, mbuf_trailingspace(mb));
- bcopy(verf_str, bpos, i);
- mlen += i;
- mbuf_setlen(mb, mlen);
- verf_str += i;
- bpos += i;
- siz -= i;
- }
- if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) {
- for (i = 0; i < siz; i++)
- *bpos++ = '\0';
- mlen += siz;
- mbuf_setlen(mb, mlen);
+ nmc->nmc_ptr += tlen;
+ nmc->nmc_left -= tlen;
+ paddedlen -= tlen;
+ if (len)
+ len -= tlen;
}
- } else {
- *tl++ = txdr_unsigned(RPCAUTH_NULL);
- *tl = 0;
- }
- error = mbuf_pkthdr_setrcvif(mreq, 0);
- if (!error)
- error = mbuf_setnext(mb, mrest);
- if (error) {
- mbuf_freem(mreq);
- return (error);
}
- mbuf_pkthdr_setlen(mreq, authsiz + 10 * NFSX_UNSIGNED + mrest_len);
- *mbp = mb;
- *mreqp = mreq;
return (0);
}
/*
- * copies mbuf chain to the uio scatter/gather list
+ * Find the length of the NFS mbuf chain
+ * up to the current encoding/decoding offset.
*/
int
-nfsm_mbuftouio(mrep, uiop, siz, dpos)
- mbuf_t *mrep;
- struct uio *uiop;
- int siz;
- caddr_t *dpos;
+nfsm_chain_offset(struct nfsm_chain *nmc)
{
- char *mbufcp, *uiocp;
- int xfer, left, len;
- mbuf_t mp;
- long uiosiz, rem;
- int error = 0;
+ mbuf_t mb;
+ int len = 0;
- mp = *mrep;
- mbufcp = *dpos;
- len = (caddr_t)mbuf_data(mp) + mbuf_len(mp) - mbufcp;
- rem = nfsm_rndup(siz)-siz;
- while (siz > 0) {
- if (uiop->uio_iovcnt <= 0 || uiop->uio_iovs.iov32p == NULL)
- return (EFBIG);
- // LP64todo - fix this!
- left = uio_iov_len(uiop);
- uiocp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
- if (left > siz)
- left = siz;
- uiosiz = left;
- while (left > 0) {
- while (len == 0) {
- mp = mbuf_next(mp);
- if (mp == NULL)
- return (EBADRPC);
- mbufcp = mbuf_data(mp);
- len = mbuf_len(mp);
- }
- xfer = (left > len) ? len : left;
- if (UIO_SEG_IS_USER_SPACE(uiop->uio_segflg))
- copyout(mbufcp, CAST_USER_ADDR_T(uiocp), xfer);
- else
- bcopy(mbufcp, uiocp, xfer);
- left -= xfer;
- len -= xfer;
- mbufcp += xfer;
- uiocp += xfer;
- uiop->uio_offset += xfer;
- uio_uio_resid_add(uiop, -xfer);
- }
- if (uio_iov_len(uiop) <= (size_t)siz) {
- uiop->uio_iovcnt--;
- uio_next_iov(uiop);
- } else {
- uio_iov_base_add(uiop, uiosiz);
- uio_iov_len_add(uiop, -uiosiz);
- }
- siz -= uiosiz;
- }
- *dpos = mbufcp;
- *mrep = mp;
- if (rem > 0) {
- if (len < rem)
- error = nfs_adv(mrep, dpos, rem, len);
- else
- *dpos += rem;
+ for (mb = nmc->nmc_mhead; mb; mb = mbuf_next(mb)) {
+ if (mb == nmc->nmc_mcur)
+ return (len + (nmc->nmc_ptr - (caddr_t) mbuf_data(mb)));
+ len += mbuf_len(mb);
}
- return (error);
+
+ return (len);
}
/*
- * copies a uio scatter/gather list to an mbuf chain.
- * NOTE: can ony handle iovcnt == 1
+ * nfsm_chain_advance()
+ *
+ * Advance an nfsm_chain by "len" bytes.
*/
int
-nfsm_uiotombuf(uiop, mq, siz, bpos)
- struct uio *uiop;
- mbuf_t *mq;
- int siz;
- caddr_t *bpos;
+nfsm_chain_advance(struct nfsm_chain *nmc, uint32_t len)
{
- char *uiocp;
- mbuf_t mp, mp2;
- int xfer, left, mlen, mplen;
- int uiosiz, clflg, rem, error;
- char *cp;
-
- if (uiop->uio_iovcnt != 1)
- panic("nfsm_uiotombuf: iovcnt != 1");
+ mbuf_t mb;
- if (siz > nfs_mbuf_mlen) /* or should it >= MCLBYTES ?? */
- clflg = 1;
- else
- clflg = 0;
- rem = nfsm_rndup(siz)-siz;
- mp = mp2 = *mq;
- mplen = mbuf_len(mp);
- while (siz > 0) {
- // LP64todo - fix this!
- left = uio_iov_len(uiop);
- uiocp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
- if (left > siz)
- left = siz;
- uiosiz = left;
- while (left > 0) {
- mlen = mbuf_trailingspace(mp);
- if (mlen == 0) {
- mp = NULL;
- if (clflg)
- error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
- else
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
- if (!error)
- error = mbuf_setnext(mp2, mp);
- if (error)
- return (error);
- mplen = 0;
- mp2 = mp;
- mlen = mbuf_trailingspace(mp);
- }
- xfer = (left > mlen) ? mlen : left;
- if (UIO_SEG_IS_USER_SPACE(uiop->uio_segflg))
- copyin(CAST_USER_ADDR_T(uiocp), (caddr_t)mbuf_data(mp) + mplen, xfer);
- else
- bcopy(uiocp, (caddr_t)mbuf_data(mp) + mplen, xfer);
- mplen += xfer;
- mbuf_setlen(mp, mplen);
- left -= xfer;
- uiocp += xfer;
- uiop->uio_offset += xfer;
- uio_uio_resid_add(uiop, -xfer);
- }
- uio_iov_base_add(uiop, uiosiz);
- uio_iov_len_add(uiop, -uiosiz);
- siz -= uiosiz;
- }
- if (rem > 0) {
- if (rem > mbuf_trailingspace(mp)) {
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
- if (!error)
- error = mbuf_setnext(mp2, mp);
- if (error)
- return (error);
- mplen = 0;
- }
- cp = (caddr_t)mbuf_data(mp) + mplen;
- for (left = 0; left < rem; left++)
- *cp++ = '\0';
- mplen += rem;
- mbuf_setlen(mp, mplen);
- *bpos = cp;
- } else {
- *bpos = (caddr_t)mbuf_data(mp) + mplen;
+ while (len) {
+ if (nmc->nmc_left >= len) {
+ nmc->nmc_left -= len;
+ nmc->nmc_ptr += len;
+ return (0);
+ }
+ len -= nmc->nmc_left;
+ nmc->nmc_mcur = mb = mbuf_next(nmc->nmc_mcur);
+ if (!mb)
+ return (EBADRPC);
+ nmc->nmc_ptr = mbuf_data(mb);
+ nmc->nmc_left = mbuf_len(mb);
}
- *mq = mp;
+
return (0);
}
/*
- * Help break down an mbuf chain by setting the first siz bytes contiguous
- * pointed to by returned val.
- * This is used by the macros nfsm_dissect and nfsm_dissecton for tough
- * cases. (The macros use the vars. dpos and dpos2)
+ * nfsm_chain_reverse()
+ *
+ * Reverse decode offset in an nfsm_chain by "len" bytes.
*/
int
-nfsm_disct(mdp, dposp, siz, left, cp2)
- mbuf_t *mdp;
- caddr_t *dposp;
- int siz;
- int left;
- caddr_t *cp2;
+nfsm_chain_reverse(struct nfsm_chain *nmc, uint32_t len)
{
- mbuf_t mp, mp2;
- int siz2, xfer, error, mp2len;
- caddr_t p, mp2data;
-
- mp = *mdp;
- while (left == 0) {
- *mdp = mp = mbuf_next(mp);
- if (mp == NULL)
- return (EBADRPC);
- left = mbuf_len(mp);
- *dposp = mbuf_data(mp);
+ uint32_t mlen, new_offset;
+ int error = 0;
+
+ mlen = nmc->nmc_ptr - (caddr_t) mbuf_data(nmc->nmc_mcur);
+ if (len <= mlen) {
+ nmc->nmc_ptr -= len;
+ nmc->nmc_left += len;
+ return (0);
+ }
+
+ new_offset = nfsm_chain_offset(nmc) - len;
+ nfsm_chain_dissect_init(error, nmc, nmc->nmc_mhead);
+ if (error)
+ return (error);
+
+ return (nfsm_chain_advance(nmc, new_offset));
+}
+
+/*
+ * nfsm_chain_get_opaque_pointer_f()
+ *
+ * Return a pointer to the next "len" bytes of contiguous data in
+ * the mbuf chain. If the next "len" bytes are not contiguous, we
+ * try to manipulate the mbuf chain so that it is.
+ *
+ * The nfsm_chain is advanced by nfsm_rndup("len") bytes.
+ */
+int
+nfsm_chain_get_opaque_pointer_f(struct nfsm_chain *nmc, uint32_t len, u_char **pptr)
+{
+ mbuf_t mbcur, mb;
+ uint32_t left, need, mblen, cplen, padlen;
+ u_char *ptr;
+ int error = 0;
+
+ /* move to next mbuf with data */
+ while (nmc->nmc_mcur && (nmc->nmc_left == 0)) {
+ mb = mbuf_next(nmc->nmc_mcur);
+ nmc->nmc_mcur = mb;
+ if (!mb)
+ break;
+ nmc->nmc_ptr = mbuf_data(mb);
+ nmc->nmc_left = mbuf_len(mb);
}
- if (left >= siz) {
- *cp2 = *dposp;
- *dposp += siz;
- } else if (mbuf_next(mp) == NULL) {
+ /* check if we've run out of data */
+ if (!nmc->nmc_mcur)
return (EBADRPC);
- } else if (siz > nfs_mbuf_mhlen) {
- panic("nfs S too big");
- } else {
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp2);
+
+ /* do we already have a contiguous buffer? */
+ if (nmc->nmc_left >= len) {
+ /* the returned pointer will be the current pointer */
+ *pptr = (u_char*)nmc->nmc_ptr;
+ error = nfsm_chain_advance(nmc, nfsm_rndup(len));
+ return (error);
+ }
+
+ padlen = nfsm_rndup(len) - len;
+
+ /* we need (len - left) more bytes */
+ mbcur = nmc->nmc_mcur;
+ left = nmc->nmc_left;
+ need = len - left;
+
+ if (need > mbuf_trailingspace(mbcur)) {
+ /*
+ * The needed bytes won't fit in the current mbuf so we'll
+ * allocate a new mbuf to hold the contiguous range of data.
+ */
+ nfsm_mbuf_get(error, &mb, len);
if (error)
return (error);
- error = mbuf_setnext(mp2, mbuf_next(mp));
+ /* double check that this mbuf can hold all the data */
+ if (mbuf_maxlen(mb) < len) {
+ mbuf_free(mb);
+ return (EOVERFLOW);
+ }
+
+ /* the returned pointer will be the new mbuf's data pointer */
+ *pptr = ptr = mbuf_data(mb);
+
+ /* copy "left" bytes to the new mbuf */
+ bcopy(nmc->nmc_ptr, ptr, left);
+ ptr += left;
+ mbuf_setlen(mb, left);
+
+ /* insert the new mbuf between the current and next mbufs */
+ error = mbuf_setnext(mb, mbuf_next(mbcur));
if (!error)
- error = mbuf_setnext(mp, mp2);
+ error = mbuf_setnext(mbcur, mb);
if (error) {
- mbuf_free(mp2);
+ mbuf_free(mb);
return (error);
}
- mbuf_setlen(mp, mbuf_len(mp) - left);
- mp = mp2;
- *cp2 = p = mbuf_data(mp);
- bcopy(*dposp, p, left); /* Copy what was left */
- siz2 = siz-left;
- p += left;
- mp2 = mbuf_next(mp);
- mp2data = mbuf_data(mp2);
- mp2len = mbuf_len(mp2);
- /* Loop around copying up the siz2 bytes */
- while (siz2 > 0) {
- if (mp2 == NULL)
- return (EBADRPC);
- xfer = (siz2 > mp2len) ? mp2len : siz2;
- if (xfer > 0) {
- bcopy(mp2data, p, xfer);
- mp2data += xfer;
- mp2len -= xfer;
- mbuf_setdata(mp2, mp2data, mp2len);
- p += xfer;
- siz2 -= xfer;
- }
- if (siz2 > 0) {
- mp2 = mbuf_next(mp2);
- mp2data = mbuf_data(mp2);
- mp2len = mbuf_len(mp2);
+
+ /* reduce current mbuf's length by "left" */
+ mbuf_setlen(mbcur, mbuf_len(mbcur) - left);
+
+ /*
+ * update nmc's state to point at the end of the mbuf
+ * where the needed data will be copied to.
+ */
+ nmc->nmc_mcur = mbcur = mb;
+ nmc->nmc_left = 0;
+ nmc->nmc_ptr = (caddr_t)ptr;
+ } else {
+ /* The rest of the data will fit in this mbuf. */
+
+ /* the returned pointer will be the current pointer */
+ *pptr = (u_char*)nmc->nmc_ptr;
+
+ /*
+ * update nmc's state to point at the end of the mbuf
+ * where the needed data will be copied to.
+ */
+ nmc->nmc_ptr += left;
+ nmc->nmc_left = 0;
+ }
+
+ /*
+ * move the next "need" bytes into the current
+ * mbuf from the mbufs that follow
+ */
+
+ /* extend current mbuf length */
+ mbuf_setlen(mbcur, mbuf_len(mbcur) + need);
+
+ /* mb follows mbufs we're copying/compacting data from */
+ mb = mbuf_next(mbcur);
+
+ while (need && mb) {
+ /* copy as much as we need/can */
+ ptr = mbuf_data(mb);
+ mblen = mbuf_len(mb);
+ cplen = MIN(mblen, need);
+ if (cplen) {
+ bcopy(ptr, nmc->nmc_ptr, cplen);
+ /*
+ * update the mbuf's pointer and length to reflect that
+ * the data was shifted to an earlier mbuf in the chain
+ */
+ error = mbuf_setdata(mb, ptr + cplen, mblen - cplen);
+ if (error) {
+ mbuf_setlen(mbcur, mbuf_len(mbcur) - need);
+ return (error);
}
+ /* update pointer/need */
+ nmc->nmc_ptr += cplen;
+ need -= cplen;
}
- mbuf_setlen(mp, siz);
- *mdp = mp2;
- *dposp = mp2data;
+ /* if more needed, go to next mbuf */
+ if (need)
+ mb = mbuf_next(mb);
}
- return (0);
+
+ /* did we run out of data in the mbuf chain? */
+ if (need) {
+ mbuf_setlen(mbcur, mbuf_len(mbcur) - need);
+ return (EBADRPC);
+ }
+
+ /*
+ * update nmc's state to point after this contiguous data
+ *
+ * "mb" points to the last mbuf we copied data from so we
+ * just set nmc to point at whatever remains in that mbuf.
+ */
+ nmc->nmc_mcur = mb;
+ nmc->nmc_ptr = mbuf_data(mb);
+ nmc->nmc_left = mbuf_len(mb);
+
+ /* move past any padding */
+ if (padlen)
+ error = nfsm_chain_advance(nmc, padlen);
+
+ return (error);
}
/*
- * Advance the position in the mbuf chain.
+ * nfsm_chain_get_opaque_f()
+ *
+ * Read the next "len" bytes in the chain into "buf".
+ * The nfsm_chain is advanced by nfsm_rndup("len") bytes.
*/
int
-nfs_adv(mdp, dposp, offs, left)
- mbuf_t *mdp;
- caddr_t *dposp;
- int offs;
- int left;
+nfsm_chain_get_opaque_f(struct nfsm_chain *nmc, uint32_t len, u_char *buf)
{
- mbuf_t m;
- int s;
-
- m = *mdp;
- s = left;
- while (s < offs) {
- offs -= s;
- m = mbuf_next(m);
- if (m == NULL)
- return (EBADRPC);
- s = mbuf_len(m);
+ uint32_t cplen, padlen;
+ int error = 0;
+
+ padlen = nfsm_rndup(len) - len;
+
+ /* loop through mbufs copying all the data we need */
+ while (len && nmc->nmc_mcur) {
+ /* copy as much as we need/can */
+ cplen = MIN(nmc->nmc_left, len);
+ if (cplen) {
+ bcopy(nmc->nmc_ptr, buf, cplen);
+ nmc->nmc_ptr += cplen;
+ nmc->nmc_left -= cplen;
+ buf += cplen;
+ len -= cplen;
+ }
+ /* if more needed, go to next mbuf */
+ if (len) {
+ mbuf_t mb = mbuf_next(nmc->nmc_mcur);
+ nmc->nmc_mcur = mb;
+ nmc->nmc_ptr = mb ? mbuf_data(mb) : NULL;
+ nmc->nmc_left = mb ? mbuf_len(mb) : 0;
+ }
}
- *mdp = m;
- *dposp = (caddr_t)mbuf_data(m) + offs;
- return (0);
+
+ /* did we run out of data in the mbuf chain? */
+ if (len)
+ return (EBADRPC);
+
+ if (padlen)
+ nfsm_chain_adv(error, nmc, padlen);
+
+ return (error);
}
/*
- * Copy a string into mbufs for the hard cases...
+ * nfsm_chain_get_uio()
+ *
+ * Read the next "len" bytes in the chain into the given uio.
+ * The nfsm_chain is advanced by nfsm_rndup("len") bytes.
*/
int
-nfsm_strtmbuf(mb, bpos, cp, siz)
- mbuf_t *mb;
- char **bpos;
- char *cp;
- long siz;
+nfsm_chain_get_uio(struct nfsm_chain *nmc, uint32_t len, uio_t uio)
{
- mbuf_t m1 = NULL, m2;
- long left, xfer, len, tlen, mlen;
- u_long *tl;
- int putsize, error;
-
- putsize = 1;
- m2 = *mb;
- left = mbuf_trailingspace(m2);
- if (left >= NFSX_UNSIGNED) {
- tl = ((u_long *)(*bpos));
- *tl++ = txdr_unsigned(siz);
- putsize = 0;
- left -= NFSX_UNSIGNED;
- len = mbuf_len(m2);
- len += NFSX_UNSIGNED;
- mbuf_setlen(m2, len);
- if (left > 0) {
- bcopy(cp, (caddr_t) tl, left);
- siz -= left;
- cp += left;
- len += left;
- mbuf_setlen(m2, len);
- left = 0;
- }
- }
- /* Loop around adding mbufs */
- while (siz > 0) {
- m1 = NULL;
- if (siz > nfs_mbuf_mlen)
- error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &m1);
- else
- error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &m1);
- if (!error)
- error = mbuf_setnext(m2, m1);
- if (error)
- return (error);
- mlen = mbuf_maxlen(m1);
- mbuf_setlen(m1, mlen);
- m2 = m1;
- tl = mbuf_data(m1);
- tlen = 0;
- if (putsize) {
- *tl++ = txdr_unsigned(siz);
- mlen -= NFSX_UNSIGNED;
- mbuf_setlen(m1, mlen);
- tlen = NFSX_UNSIGNED;
- putsize = 0;
- }
- if (siz < mlen) {
- len = nfsm_rndup(siz);
- xfer = siz;
- if (xfer < len)
- *(tl+(xfer>>2)) = 0;
- } else {
- xfer = len = mlen;
+ uint32_t cplen, padlen;
+ int error = 0;
+
+ padlen = nfsm_rndup(len) - len;
+
+ /* loop through mbufs copying all the data we need */
+ while (len && nmc->nmc_mcur) {
+ /* copy as much as we need/can */
+ cplen = MIN(nmc->nmc_left, len);
+ if (cplen) {
+ error = uiomove(nmc->nmc_ptr, cplen, uio);
+ if (error)
+ return (error);
+ nmc->nmc_ptr += cplen;
+ nmc->nmc_left -= cplen;
+ len -= cplen;
+ }
+ /* if more needed, go to next mbuf */
+ if (len) {
+ mbuf_t mb = mbuf_next(nmc->nmc_mcur);
+ nmc->nmc_mcur = mb;
+ nmc->nmc_ptr = mb ? mbuf_data(mb) : NULL;
+ nmc->nmc_left = mb ? mbuf_len(mb) : 0;
}
- bcopy(cp, (caddr_t) tl, xfer);
- mbuf_setlen(m1, len + tlen);
- siz -= xfer;
- cp += xfer;
}
- *mb = m1;
- *bpos = (caddr_t)mbuf_data(m1) + mbuf_len(m1);
- return (0);
+
+ /* did we run out of data in the mbuf chain? */
+ if (len)
+ return (EBADRPC);
+
+ if (padlen)
+ nfsm_chain_adv(error, nmc, padlen);
+
+ return (error);
}
-/*
- * Called once to initialize data structures...
- */
+#if NFSCLIENT
+
int
-nfs_init(struct vfsconf *vfsp)
+nfsm_chain_add_string_nfc(struct nfsm_chain *nmc, const uint8_t *s, uint32_t slen)
{
- int i;
-
- /*
- * Check to see if major data structures haven't bloated.
- */
- if (sizeof (struct nfsnode) > NFS_NODEALLOC) {
- printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC);
- printf("Try reducing NFS_SMALLFH\n");
- }
- if (sizeof (struct nfsmount) > NFS_MNTALLOC) {
- printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC);
- printf("Try reducing NFS_MUIDHASHSIZ\n");
- }
- if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) {
- printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC);
- printf("Try reducing NFS_UIDHASHSIZ\n");
- }
- if (sizeof (struct nfsuid) > NFS_UIDALLOC) {
- printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC);
- printf("Try unionizing the nu_nickname and nu_flag fields\n");
- }
-
- nfs_mount_type = vfsp->vfc_typenum;
- nfsrtt.pos = 0;
- rpc_vers = txdr_unsigned(RPC_VER2);
- rpc_call = txdr_unsigned(RPC_CALL);
- rpc_reply = txdr_unsigned(RPC_REPLY);
- rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED);
- rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED);
- rpc_mismatch = txdr_unsigned(RPC_MISMATCH);
- rpc_autherr = txdr_unsigned(RPC_AUTHERR);
- rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX);
- rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4);
- nfs_prog = txdr_unsigned(NFS_PROG);
- nfs_true = txdr_unsigned(TRUE);
- nfs_false = txdr_unsigned(FALSE);
- nfs_xdrneg1 = txdr_unsigned(-1);
-
- nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
- if (nfs_ticks < 1)
- nfs_ticks = 1;
- /* Ensure async daemons disabled */
- for (i = 0; i < NFS_MAXASYNCDAEMON; i++) {
- nfs_iodwant[i] = NULL;
- nfs_iodmount[i] = (struct nfsmount *)0;
- }
- /* init nfsiod mutex */
- nfs_iod_lck_grp_attr = lck_grp_attr_alloc_init();
- nfs_iod_lck_grp = lck_grp_alloc_init("nfs_iod", nfs_iod_lck_grp_attr);
- nfs_iod_lck_attr = lck_attr_alloc_init();
- nfs_iod_mutex = lck_mtx_alloc_init(nfs_iod_lck_grp, nfs_iod_lck_attr);
-
- nfs_nbinit(); /* Init the nfsbuf table */
- nfs_nhinit(); /* Init the nfsnode table */
- nfs_lockinit(); /* Init the nfs lock state */
-
-#ifndef NFS_NOSERVER
- /* init nfsd mutex */
- nfsd_lck_grp_attr = lck_grp_attr_alloc_init();
- nfsd_lck_grp = lck_grp_alloc_init("nfsd", nfsd_lck_grp_attr);
- nfsd_lck_attr = lck_attr_alloc_init();
- nfsd_mutex = lck_mtx_alloc_init(nfsd_lck_grp, nfsd_lck_attr);
-
- /* init slp rwlock */
- nfs_slp_lock_attr = lck_attr_alloc_init();
- nfs_slp_group_attr = lck_grp_attr_alloc_init();
- nfs_slp_rwlock_group = lck_grp_alloc_init("nfs-slp-rwlock", nfs_slp_group_attr);
- nfs_slp_mutex_group = lck_grp_alloc_init("nfs-slp-mutex", nfs_slp_group_attr);
-
- /* init export data structures */
- nfsexphashtbl = hashinit(8, M_TEMP, &nfsexphash);
- LIST_INIT(&nfs_exports);
- nfs_export_lock_attr = lck_attr_alloc_init();
- nfs_export_group_attr = lck_grp_attr_alloc_init();
- nfs_export_rwlock_group = lck_grp_alloc_init("nfs-export-rwlock", nfs_export_group_attr);
- lck_rw_init(&nfs_export_rwlock, nfs_export_rwlock_group, nfs_export_lock_attr);
-
- lck_mtx_lock(nfsd_mutex);
- nfsrv_init(0); /* Init server data structures */
- nfsrv_initcache(); /* Init the server request cache */
- lck_mtx_unlock(nfsd_mutex);
-#endif
+ uint8_t smallbuf[64];
+ uint8_t *nfcname = smallbuf;
+ size_t buflen = sizeof(smallbuf), nfclen;
+ int error;
- /*
- * Initialize reply list and start timer
- */
- TAILQ_INIT(&nfs_reqq);
+ error = utf8_normalizestr(s, slen, nfcname, &nfclen, buflen, UTF_PRECOMPOSED|UTF_NO_NULL_TERM);
+ if (error == ENAMETOOLONG) {
+ buflen = MAXPATHLEN;
+ MALLOC_ZONE(nfcname, uint8_t *, MAXPATHLEN, M_NAMEI, M_WAITOK);
+ if (nfcname)
+ error = utf8_normalizestr(s, slen, nfcname, &nfclen, buflen, UTF_PRECOMPOSED|UTF_NO_NULL_TERM);
+ }
- nfs_timer(0);
+ /* if we got an error, just use the original string */
+ if (error)
+ nfsm_chain_add_string(error, nmc, s, slen);
+ else
+ nfsm_chain_add_string(error, nmc, nfcname, nfclen);
- vfsp->vfc_refcount++; /* make us non-unloadable */
- return (0);
+ if (nfcname && (nfcname != smallbuf))
+ FREE_ZONE(nfcname, MAXPATHLEN, M_NAMEI);
+ return (error);
}
/*
- * initialize NFS's cache of mbuf constants
+ * Add an NFSv2 "sattr" structure to an mbuf chain
*/
-void
-nfs_mbuf_init(void)
+int
+nfsm_chain_add_v2sattr_f(struct nfsm_chain *nmc, struct vnode_attr *vap, uint32_t szrdev)
{
- struct mbuf_stat ms;
+ int error = 0;
- mbuf_stats(&ms);
- nfs_mbuf_mlen = ms.mlen;
- nfs_mbuf_mhlen = ms.mhlen;
- nfs_mbuf_minclsize = ms.minclsize;
- nfs_mbuf_mclbytes = ms.mclbytes;
+ nfsm_chain_add_32(error, nmc, vtonfsv2_mode(vap->va_type,
+ (VATTR_IS_ACTIVE(vap, va_mode) ? vap->va_mode : 0600)));
+ nfsm_chain_add_32(error, nmc,
+ VATTR_IS_ACTIVE(vap, va_uid) ? vap->va_uid : (uint32_t)-1);
+ nfsm_chain_add_32(error, nmc,
+ VATTR_IS_ACTIVE(vap, va_gid) ? vap->va_gid : (uint32_t)-1);
+ nfsm_chain_add_32(error, nmc, szrdev);
+ nfsm_chain_add_v2time(error, nmc,
+ VATTR_IS_ACTIVE(vap, va_access_time) ?
+ &vap->va_access_time : NULL);
+ nfsm_chain_add_v2time(error, nmc,
+ VATTR_IS_ACTIVE(vap, va_modify_time) ?
+ &vap->va_modify_time : NULL);
+
+ return (error);
}
/*
- * Parse the attributes that are in the mbuf list and store them in *nvap.
+ * Add an NFSv3 "sattr" structure to an mbuf chain
*/
int
-nfs_parsefattr(mbuf_t *mdp, caddr_t *dposp, int v3, struct nfs_vattr *nvap)
+nfsm_chain_add_v3sattr_f(struct nfsm_chain *nmc, struct vnode_attr *vap)
{
- struct nfs_fattr *fp;
- long t1;
- caddr_t cp2;
- int error = 0, rdev;
- mbuf_t md;
- enum vtype vtype;
- u_short vmode;
+ int error = 0;
- md = *mdp;
- t1 = ((caddr_t)mbuf_data(md) + mbuf_len(md)) - *dposp;
- if ((error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2))) {
- return (error);
+ if (VATTR_IS_ACTIVE(vap, va_mode)) {
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_32(error, nmc, vap->va_mode);
+ } else {
+ nfsm_chain_add_32(error, nmc, FALSE);
}
- fp = (struct nfs_fattr *)cp2;
- if (v3) {
- vtype = nfsv3tov_type(fp->fa_type);
- vmode = fxdr_unsigned(u_short, fp->fa_mode);
- rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1),
- fxdr_unsigned(int, fp->fa3_rdev.specdata2));
+ if (VATTR_IS_ACTIVE(vap, va_uid)) {
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_32(error, nmc, vap->va_uid);
} else {
- vtype = nfsv2tov_type(fp->fa_type);
- vmode = fxdr_unsigned(u_short, fp->fa_mode);
- /*
- * XXX
- *
- * The duplicate information returned in fa_type and fa_mode
- * is an ambiguity in the NFS version 2 protocol.
- *
- * VREG should be taken literally as a regular file. If a
- * server intents to return some type information differently
- * in the upper bits of the mode field (e.g. for sockets, or
- * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we
- * leave the examination of the mode bits even in the VREG
- * case to avoid breakage for bogus servers, but we make sure
- * that there are actually type bits set in the upper part of
- * fa_mode (and failing that, trust the va_type field).
- *
- * NFSv3 cleared the issue, and requires fa_mode to not
- * contain any type information (while also introduing sockets
- * and FIFOs for fa_type).
- */
- if (vtype == VNON || (vtype == VREG && (vmode & S_IFMT) != 0))
- vtype = IFTOVT(vmode);
- rdev = fxdr_unsigned(long, fp->fa2_rdev);
- /*
- * Really ugly NFSv2 kludge.
- */
- if (vtype == VCHR && rdev == (int)0xffffffff)
- vtype = VFIFO;
+ nfsm_chain_add_32(error, nmc, FALSE);
}
-
- nvap->nva_type = vtype;
- nvap->nva_mode = (vmode & 07777);
- nvap->nva_rdev = (dev_t)rdev;
- nvap->nva_nlink = (uint64_t)fxdr_unsigned(u_long, fp->fa_nlink);
- nvap->nva_uid = fxdr_unsigned(uid_t, fp->fa_uid);
- nvap->nva_gid = fxdr_unsigned(gid_t, fp->fa_gid);
- if (v3) {
- fxdr_hyper(&fp->fa3_size, &nvap->nva_size);
- nvap->nva_blocksize = 16*1024;
- fxdr_hyper(&fp->fa3_used, &nvap->nva_bytes);
- fxdr_hyper(&fp->fa3_fileid, &nvap->nva_fileid);
- fxdr_nfsv3time(&fp->fa3_atime, &nvap->nva_atime);
- fxdr_nfsv3time(&fp->fa3_mtime, &nvap->nva_mtime);
- fxdr_nfsv3time(&fp->fa3_ctime, &nvap->nva_ctime);
+ if (VATTR_IS_ACTIVE(vap, va_gid)) {
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_32(error, nmc, vap->va_gid);
+ } else {
+ nfsm_chain_add_32(error, nmc, FALSE);
+ }
+ if (VATTR_IS_ACTIVE(vap, va_data_size)) {
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_64(error, nmc, vap->va_data_size);
+ } else {
+ nfsm_chain_add_32(error, nmc, FALSE);
+ }
+ if (vap->va_vaflags & VA_UTIMES_NULL) {
+ nfsm_chain_add_32(error, nmc, NFS_TIME_SET_TO_SERVER);
+ nfsm_chain_add_32(error, nmc, NFS_TIME_SET_TO_SERVER);
} else {
- nvap->nva_size = fxdr_unsigned(u_long, fp->fa2_size);
- nvap->nva_blocksize = fxdr_unsigned(long, fp->fa2_blocksize);
- nvap->nva_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE;
- nvap->nva_fileid = (uint64_t)fxdr_unsigned(u_long, fp->fa2_fileid);
- fxdr_nfsv2time(&fp->fa2_atime, &nvap->nva_atime);
- fxdr_nfsv2time(&fp->fa2_mtime, &nvap->nva_mtime);
- fxdr_nfsv2time(&fp->fa2_ctime, &nvap->nva_ctime);
+ if (VATTR_IS_ACTIVE(vap, va_access_time)) {
+ nfsm_chain_add_32(error, nmc, NFS_TIME_SET_TO_CLIENT);
+ nfsm_chain_add_32(error, nmc, vap->va_access_time.tv_sec);
+ nfsm_chain_add_32(error, nmc, vap->va_access_time.tv_nsec);
+ } else {
+ nfsm_chain_add_32(error, nmc, NFS_TIME_DONT_CHANGE);
+ }
+ if (VATTR_IS_ACTIVE(vap, va_modify_time)) {
+ nfsm_chain_add_32(error, nmc, NFS_TIME_SET_TO_CLIENT);
+ nfsm_chain_add_32(error, nmc, vap->va_modify_time.tv_sec);
+ nfsm_chain_add_32(error, nmc, vap->va_modify_time.tv_nsec);
+ } else {
+ nfsm_chain_add_32(error, nmc, NFS_TIME_DONT_CHANGE);
+ }
}
- return (0);
+ return (error);
}
+
/*
- * Load the attribute cache (that lives in the nfsnode entry) with
- * the value pointed to by nvap, unless the file type in the attribute
- * cache doesn't match the file type in the nvap, in which case log a
- * warning and return ESTALE.
+ * nfsm_chain_get_fh_attr()
*
- * If the dontshrink flag is set, then it's not safe to call ubc_setsize()
- * to shrink the size of the file.
+ * Get the file handle and attributes from an mbuf chain. (NFSv2/v3)
*/
int
-nfs_loadattrcache(
- struct nfsnode *np,
- struct nfs_vattr *nvap,
- u_int64_t *xidp,
- int dontshrink)
+nfsm_chain_get_fh_attr(
+ struct nfsm_chain *nmc,
+ nfsnode_t dnp,
+ vfs_context_t ctx,
+ int nfsvers,
+ uint64_t *xidp,
+ fhandle_t *fhp,
+ struct nfs_vattr *nvap)
{
- mount_t mp;
- vnode_t vp;
- struct timeval now;
- struct nfs_vattr *npnvap;
-
- if (np->n_flag & NINIT) {
- vp = NULL;
- mp = np->n_mount;
- } else {
- vp = NFSTOV(np);
- mp = vnode_mount(vp);
- }
-
- FSDBG_TOP(527, vp, np, *xidp >> 32, *xidp);
-
- if (!VFSTONFS(mp)) {
- FSDBG_BOT(527, ENXIO, 1, 0, *xidp);
- return (ENXIO);
- }
-
- if (*xidp < np->n_xid) {
- /*
- * We have already updated attributes with a response from
- * a later request. The attributes we have here are probably
- * stale so we drop them (just return). However, our
- * out-of-order receipt could be correct - if the requests were
- * processed out of order at the server. Given the uncertainty
- * we invalidate our cached attributes. *xidp is zeroed here
- * to indicate the attributes were dropped - only getattr
- * cares - it needs to retry the rpc.
- */
- NATTRINVALIDATE(np);
- FSDBG_BOT(527, 0, np, np->n_xid, *xidp);
- *xidp = 0;
- return (0);
- }
-
- if (vp && (nvap->nva_type != vnode_vtype(vp))) {
- /*
- * The filehandle has changed type on us. This can be
- * caused by either the server not having unique filehandles
- * or because another client has removed the previous
- * filehandle and a new object (of a different type)
- * has been created with the same filehandle.
- *
- * We can't simply switch the type on the vnode because
- * there may be type-specific fields that need to be
- * cleaned up or set up.
- *
- * So, what should we do with this vnode?
- *
- * About the best we can do is log a warning and return
- * an error. ESTALE is about the closest error, but it
- * is a little strange that we come up with this error
- * internally instead of simply passing it through from
- * the server. Hopefully, the vnode will be reclaimed
- * soon so the filehandle can be reincarnated as the new
- * object type.
- */
- printf("nfs loadattrcache vnode changed type, was %d now %d\n",
- vnode_vtype(vp), nvap->nva_type);
- FSDBG_BOT(527, ESTALE, 3, 0, *xidp);
- return (ESTALE);
- }
-
- microuptime(&now);
- np->n_attrstamp = now.tv_sec;
- np->n_xid = *xidp;
+ int error = 0, gotfh, gotattr;
- npnvap = &np->n_vattr;
- nvap->nva_fsid = vfs_statfs(mp)->f_fsid.val[0];
- bcopy((caddr_t)nvap, (caddr_t)npnvap, sizeof(*nvap));
+ gotfh = gotattr = 1;
- if (vp) {
- if (nvap->nva_size != np->n_size) {
- FSDBG(527, vp, nvap->nva_size, np->n_size,
- (nvap->nva_type == VREG) |
- (np->n_flag & NMODIFIED ? 6 : 4));
- if (nvap->nva_type == VREG) {
- u_quad_t orig_size = np->n_size;
- if (np->n_flag & NMODIFIED) {
- if (nvap->nva_size < np->n_size)
- nvap->nva_size = np->n_size;
- else
- np->n_size = nvap->nva_size;
- } else
- np->n_size = nvap->nva_size;
- if (!UBCINFOEXISTS(vp) ||
- (dontshrink && np->n_size < (u_quad_t)ubc_getsize(vp))) {
- nvap->nva_size = np->n_size = orig_size;
- NATTRINVALIDATE(np);
- } else {
- ubc_setsize(vp, (off_t)np->n_size); /* XXX */
- }
- } else
- np->n_size = nvap->nva_size;
+ if (nfsvers == NFS_VER3) /* check for file handle */
+ nfsm_chain_get_32(error, nmc, gotfh);
+ if (!error && gotfh) /* get file handle */
+ nfsm_chain_get_fh(error, nmc, nfsvers, fhp);
+ else
+ fhp->fh_len = 0;
+ if (nfsvers == NFS_VER3) /* check for file attributes */
+ nfsm_chain_get_32(error, nmc, gotattr);
+ nfsmout_if(error);
+ if (gotattr) {
+ if (!gotfh) /* skip attributes */
+ nfsm_chain_adv(error, nmc, NFSX_V3FATTR);
+ else /* get attributes */
+ error = nfs_parsefattr(nmc, nfsvers, nvap);
+ } else if (gotfh) {
+ /* we need valid attributes in order to call nfs_nget() */
+ if (nfs3_getattr_rpc(NULL, NFSTOMP(dnp), fhp->fh_data, fhp->fh_len, 0, ctx, nvap, xidp)) {
+ gotattr = 0;
+ fhp->fh_len = 0;
}
- } else {
- np->n_size = nvap->nva_size;
}
+nfsmout:
+ return (error);
+}
- if (np->n_flag & NCHG) {
- if (np->n_flag & NACC)
- nvap->nva_atime = np->n_atim;
- if (np->n_flag & NUPD)
- nvap->nva_mtime = np->n_mtim;
+/*
+ * Get and process NFSv3 WCC data from an mbuf chain
+ */
+int
+nfsm_chain_get_wcc_data_f(
+ struct nfsm_chain *nmc,
+ nfsnode_t np,
+ struct timespec *premtime,
+ int *newpostattr,
+ u_int64_t *xidp)
+{
+ int error = 0;
+ uint32_t flag = 0;
+
+ nfsm_chain_get_32(error, nmc, flag);
+ if (!error && flag) {
+ nfsm_chain_adv(error, nmc, 2 * NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmc, premtime->tv_sec);
+ nfsm_chain_get_32(error, nmc, premtime->tv_nsec);
+ nfsm_chain_adv(error, nmc, 2 * NFSX_UNSIGNED);
+ } else {
+ premtime->tv_sec = 0;
+ premtime->tv_nsec = 0;
}
+ nfsm_chain_postop_attr_update_flag(error, nmc, np, *newpostattr, xidp);
- FSDBG_BOT(527, 0, np, 0, *xidp);
- return (0);
+ return (error);
}
/*
- * Calculate the attribute timeout based on
- * how recently the file has been modified.
+ * Get the next RPC transaction ID (XID)
*/
-int
-nfs_attrcachetimeout(vnode_t vp)
+void
+nfs_get_xid(uint64_t *xidp)
{
- struct nfsnode *np = VTONFS(vp);
- struct nfsmount *nmp;
- struct timeval now;
- int isdir, timeo;
-
- if (!(nmp = VFSTONFS(vnode_mount(vp))))
- return (0);
-
- isdir = vnode_isdir(vp);
+ struct timeval tv;
- if ((np)->n_flag & NMODIFIED)
- timeo = isdir ? nmp->nm_acdirmin : nmp->nm_acregmin;
- else {
- /* Note that if the client and server clocks are way out of sync, */
- /* timeout will probably get clamped to a min or max value */
- microtime(&now);
- timeo = (now.tv_sec - (np)->n_mtime.tv_sec) / 10;
- if (isdir) {
- if (timeo < nmp->nm_acdirmin)
- timeo = nmp->nm_acdirmin;
- else if (timeo > nmp->nm_acdirmax)
- timeo = nmp->nm_acdirmax;
- } else {
- if (timeo < nmp->nm_acregmin)
- timeo = nmp->nm_acregmin;
- else if (timeo > nmp->nm_acregmax)
- timeo = nmp->nm_acregmax;
- }
+ lck_mtx_lock(nfs_request_mutex);
+ if (!nfs_xid) {
+ /*
+ * Derive initial xid from system time.
+ *
+ * Note: it's OK if this code inits nfs_xid to 0 (for example,
+ * due to a broken clock) because we immediately increment it
+ * and we guarantee to never use xid 0. So, nfs_xid should only
+ * ever be 0 the first time this function is called.
+ */
+ microtime(&tv);
+ nfs_xid = tv.tv_sec << 12;
}
-
- return (timeo);
+ if (++nfs_xid == 0) {
+ /* Skip zero xid if it should ever happen. */
+ nfs_xidwrap++;
+ nfs_xid++;
+ }
+ *xidp = nfs_xid + ((uint64_t)nfs_xidwrap << 32);
+ lck_mtx_unlock(nfs_request_mutex);
}
/*
- * Check the time stamp
- * If the cache is valid, copy contents to *nvaper and return 0
- * otherwise return an error
+ * Build the RPC header and fill in the authorization info.
+ * Returns the head of the mbuf list and the xid.
*/
+
int
-nfs_getattrcache(vp, nvaper)
- vnode_t vp;
- struct nfs_vattr *nvaper;
+nfsm_rpchead(
+ struct nfsreq *req,
+ mbuf_t mrest,
+ u_int64_t *xidp,
+ mbuf_t *mreqp)
{
- struct nfsnode *np = VTONFS(vp);
- struct nfs_vattr *nvap;
- struct timeval nowup;
- int32_t timeo;
-
- if (!NATTRVALID(np)) {
- FSDBG(528, vp, 0, 0, 0);
- OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_misses);
- return (ENOENT);
- }
+ struct nfsmount *nmp = req->r_nmp;
+ int nfsvers = nmp->nm_vers;
+ int proc = ((nfsvers == NFS_VER2) ? nfsv2_procid[req->r_procnum] : (int)req->r_procnum);
- timeo = nfs_attrcachetimeout(vp);
-
- microuptime(&nowup);
- if ((nowup.tv_sec - np->n_attrstamp) >= timeo) {
- FSDBG(528, vp, 0, 0, 1);
- OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_misses);
- return (ENOENT);
- }
- FSDBG(528, vp, 0, 0, 2);
- OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_hits);
- nvap = &np->n_vattr;
-
- if (nvap->nva_size != np->n_size) {
- FSDBG(528, vp, nvap->nva_size, np->n_size,
- (nvap->nva_type == VREG) |
- (np->n_flag & NMODIFIED ? 6 : 4));
- if (nvap->nva_type == VREG) {
- if (np->n_flag & NMODIFIED) {
- if (nvap->nva_size < np->n_size)
- nvap->nva_size = np->n_size;
- else
- np->n_size = nvap->nva_size;
- } else
- np->n_size = nvap->nva_size;
- ubc_setsize(vp, (off_t)np->n_size); /* XXX */
- } else
- np->n_size = nvap->nva_size;
- }
-
- bcopy((caddr_t)nvap, (caddr_t)nvaper, sizeof(struct nfs_vattr));
- if (np->n_flag & NCHG) {
- if (np->n_flag & NACC)
- nvaper->nva_atime = np->n_atim;
- if (np->n_flag & NUPD)
- nvaper->nva_mtime = np->n_mtim;
- }
- return (0);
+ return nfsm_rpchead2(nmp, nmp->nm_sotype, NFS_PROG, nfsvers, proc,
+ req->r_auth, req->r_cred, req, mrest, xidp, mreqp);
}
-#ifndef NFS_NOSERVER
/*
- * Extract a lookup path from the given mbufs and store it in
- * a newly allocated buffer saved in the given nameidata structure.
- * exptected string length given as *lenp and final string length
- * (after any WebNFS processing) is returned in *lenp.
+ * get_auiliary_groups: Gets the supplementary groups from a credential.
+ *
+ * IN: cred: credential to get the associated groups from.
+ * OUT: groups: An array of gids of NGROUPS size.
+ * IN: count: The number of groups to get; i.e.; the number of groups the server supports
+ *
+ * returns: The number of groups found.
+ *
+ * Just a wrapper around kauth_cred_getgroups to handle the case of a server supporting less
+ * than NGROUPS.
*/
-int
-nfsm_path_mbuftond(
- mbuf_t *mdp,
- caddr_t *dposp,
- __unused int v3,
- __unused int pubflag,
- int* lenp,
- struct nameidata *ndp)
+static int
+get_auxiliary_groups(kauth_cred_t cred, gid_t groups[NGROUPS], int count)
{
- int i, len, len2, rem, error = 0;
- mbuf_t md;
- char *fromcp, *tocp;
- struct componentname *cnp = &ndp->ni_cnd;
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- int webcnt = 0, digitcnt = 0;
- char hexdigits[2];
-#endif
-
- len = *lenp;
- if (len > (MAXPATHLEN - 1))
- return (ENAMETOOLONG);
-
+ gid_t pgid;
+ int maxcount = count < NGROUPS ? count + 1 : NGROUPS;
+ int i;
+
+ for (i = 0; i < NGROUPS; i++)
+ groups[i] = -2; /* Initialize to the nobody group */
+
+ (void)kauth_cred_getgroups(cred, groups, &maxcount);
+ if (maxcount < 1)
+ return (maxcount);
+
/*
- * Get a buffer for the name to be translated, and copy the
- * name into the buffer.
+ * kauth_get_groups returns the primary group followed by the
+ * users auxiliary groups. If the number of groups the server supports
+ * is less than NGROUPS, then we will drop the first group so that
+ * we can send one more group over the wire.
*/
- MALLOC_ZONE(cnp->cn_pnbuf, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK);
- if (!cnp->cn_pnbuf)
- return (ENOMEM);
- cnp->cn_pnlen = MAXPATHLEN;
- cnp->cn_flags |= HASBUF;
- /*
- * Copy the name from the mbuf list to the string
- *
- * Along the way, take note of any WebNFS characters
- * and convert any % escapes.
- */
- fromcp = *dposp;
- tocp = cnp->cn_pnbuf;
- md = *mdp;
- rem = (caddr_t)mbuf_data(md) + mbuf_len(md) - fromcp;
- for (i = 1; i <= len; i++) {
- while (rem == 0) {
- md = mbuf_next(md);
- if (md == NULL) {
- error = EBADRPC;
- goto out;
- }
- fromcp = mbuf_data(md);
- rem = mbuf_len(md);
- }
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- if (pubflag) {
- if ((i == 1) && ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START)) {
- switch ((unsigned char)*fromcp) {
- case WEBNFS_NATIVE_CHAR:
- /*
- * 'Native' path for us is the same
- * as a path according to the NFS spec,
- * just skip the escape char.
- */
- webcnt++;
- fromcp++;
- rem--;
- /* next iteration of for loop */
- continue;
- /*
- * More may be added in the future, range 0x80-0xff.
- * Don't currently support security query lookup (0x81).
- */
- default:
- error = EIO;
- goto out;
- }
- }
- if (digitcnt) {
- /* We're expecting hex digits */
- if (!ISHEX(*fromcp)) {
- error = ENOENT;
- goto out;
- }
- digitcnt--;
- hexdigits[digitcnt ? 0 : 1] = *fromcp++;
- if (!digitcnt)
- *tocp++ = HEXSTRTOI(hexdigits);
- rem--;
- /* next iteration of for loop */
- continue;
- } else if (*fromcp == WEBNFS_ESC_CHAR) {
- /*
- * We can't really look at the next couple
- * bytes here safely/easily, so we note that
- * the next two characters should be hex
- * digits and later save them in hexdigits[].
- * When we've got both, we'll convert it.
- */
- digitcnt = 2;
- webcnt += 2;
- fromcp++;
- rem--;
- /* next iteration of for loop */
- continue;
- }
- }
- if (*fromcp == '\0' || (!pubflag && *fromcp == '/'))
-#else
- if (*fromcp == '\0' || *fromcp == '/')
-#endif
- {
- error = EACCES;
- goto out;
- }
- *tocp++ = *fromcp++;
- rem--;
- }
- *tocp = '\0';
- *mdp = md;
- *dposp = fromcp;
- len2 = nfsm_rndup(len)-len;
- if (len2 > 0) {
- if (rem >= len2)
- *dposp += len2;
- else if ((error = nfs_adv(mdp, dposp, len2, rem)) != 0)
- goto out;
- }
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- if (pubflag) {
- if (digitcnt) {
- /* The string ended in the middle of an escape! */
- error = ENOENT;
- goto out;
+ if (count < NGROUPS) {
+ pgid = kauth_cred_getgid(cred);
+ if (pgid == groups[0]) {
+ maxcount -= 1;
+ for (i = 0; i < maxcount; i++) {
+ groups[i] = groups[i+1];
+ }
}
- len -= webcnt;
- }
-#endif
-
-out:
- if (error) {
- if (cnp->cn_pnbuf)
- FREE_ZONE(cnp->cn_pnbuf, MAXPATHLEN, M_NAMEI);
- cnp->cn_flags &= ~HASBUF;
- } else {
- ndp->ni_pathlen = len;
- *lenp = len;
}
- return (error);
+
+ return (maxcount);
}
-/*
- * Set up nameidata for a lookup() call and do it.
- *
- * If pubflag is set, this call is done for a lookup operation on the
- * public filehandle. In that case we allow crossing mountpoints and
- * absolute pathnames. However, the caller is expected to check that
- * the lookup result is within the public fs, and deny access if
- * it is not.
- */
int
-nfs_namei(
- struct nfsrv_descript *nfsd,
- struct vfs_context *ctx,
- struct nameidata *ndp,
- struct nfs_filehandle *nfhp,
- mbuf_t nam,
- int pubflag,
- vnode_t *retdirp,
- struct nfs_export **nxp,
- struct nfs_export_options **nxop)
+nfsm_rpchead2(struct nfsmount *nmp, int sotype, int prog, int vers, int proc, int auth_type,
+ kauth_cred_t cred, struct nfsreq *req, mbuf_t mrest, u_int64_t *xidp, mbuf_t *mreqp)
{
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- char *cp;
- uio_t auio;
- char uio_buf[ UIO_SIZEOF(1) ];
- int linklen, olen = ndp->ni_pathlen;
-#endif
- vnode_t dp;
- int error;
- struct componentname *cnp = &ndp->ni_cnd;
- char *tmppn;
+ mbuf_t mreq, mb;
+ int error, i, auth_len = 0, authsiz, reqlen;
+ size_t headlen;
+ struct nfsm_chain nmreq;
+ gid_t grouplist[NGROUPS];
+ int groupcount;
+
+ /* calculate expected auth length */
+ switch (auth_type) {
+ case RPCAUTH_NONE:
+ auth_len = 0;
+ break;
+ case RPCAUTH_SYS:
+ {
+ int count = nmp->nm_numgrps < NGROUPS ? nmp->nm_numgrps : NGROUPS;
- *retdirp = NULL;
+ if (!cred)
+ return (EINVAL);
+ groupcount = get_auxiliary_groups(cred, grouplist, count);
+ if (groupcount < 0)
+ return (EINVAL);
+ auth_len = ((uint32_t)groupcount + 5) * NFSX_UNSIGNED;
+ break;
+ }
+ case RPCAUTH_KRB5:
+ case RPCAUTH_KRB5I:
+ case RPCAUTH_KRB5P:
+ if (!req || !cred)
+ return (EINVAL);
+ auth_len = 5 * NFSX_UNSIGNED + 0; // zero context handle for now
+ break;
+ default:
+ return (EINVAL);
+ }
+ authsiz = nfsm_rndup(auth_len);
+
+ /* allocate the packet */
+ headlen = authsiz + 10 * NFSX_UNSIGNED;
+ if (sotype == SOCK_STREAM) /* also include room for any RPC Record Mark */
+ headlen += NFSX_UNSIGNED;
+ if (headlen >= nfs_mbuf_minclsize) {
+ error = mbuf_getpacket(MBUF_WAITOK, &mreq);
+ } else {
+ error = mbuf_gethdr(MBUF_WAITOK, MBUF_TYPE_DATA, &mreq);
+ if (!error) {
+ if (headlen < nfs_mbuf_mhlen)
+ mbuf_align_32(mreq, headlen);
+ else
+ mbuf_align_32(mreq, 8 * NFSX_UNSIGNED);
+ }
+ }
+ if (error) {
+ /* unable to allocate packet */
+ /* XXX should we keep statistics for these errors? */
+ return (error);
+ }
/*
- * Extract and set starting directory.
+ * If the caller gave us a non-zero XID then use it because
+ * it may be a higher-level resend with a GSSAPI credential.
+ * Otherwise, allocate a new one.
*/
- error = nfsrv_fhtovp(nfhp, nam, pubflag, &dp, nxp, nxop);
- if (error)
- goto out;
- error = nfsrv_credcheck(nfsd, *nxp, *nxop);
- if (error || (vnode_vtype(dp) != VDIR)) {
- vnode_put(dp);
- error = ENOTDIR;
- goto out;
- }
+ if (*xidp == 0)
+ nfs_get_xid(xidp);
- ctx->vc_ucred = nfsd->nd_cr;
- ndp->ni_cnd.cn_context = ctx;
+ /* build the header(s) */
+ nfsm_chain_init(&nmreq, mreq);
- if (*nxop && ((*nxop)->nxo_flags & NX_READONLY))
- cnp->cn_flags |= RDONLY;
+ /* First, if it's a TCP stream insert space for an RPC record mark */
+ if (sotype == SOCK_STREAM)
+ nfsm_chain_add_32(error, &nmreq, 0);
- *retdirp = dp;
+ /* Then the RPC header. */
+ nfsm_chain_add_32(error, &nmreq, (*xidp & 0xffffffff));
+ nfsm_chain_add_32(error, &nmreq, RPC_CALL);
+ nfsm_chain_add_32(error, &nmreq, RPC_VER2);
+ nfsm_chain_add_32(error, &nmreq, prog);
+ nfsm_chain_add_32(error, &nmreq, vers);
+ nfsm_chain_add_32(error, &nmreq, proc);
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- if (pubflag) {
- ndp->ni_rootdir = rootvnode;
- ndp->ni_loopcnt = 0;
- if (cnp->cn_pnbuf[0] == '/') {
- vnode_put(dp);
- dp = rootvnode;
- error = vnode_get(dp);
- if (error) {
- *retdirp = NULL;
- goto out;
- }
+add_cred:
+ switch (auth_type) {
+ case RPCAUTH_NONE:
+ nfsm_chain_add_32(error, &nmreq, RPCAUTH_NONE); /* auth */
+ nfsm_chain_add_32(error, &nmreq, 0); /* length */
+ nfsm_chain_add_32(error, &nmreq, RPCAUTH_NONE); /* verf */
+ nfsm_chain_add_32(error, &nmreq, 0); /* length */
+ nfsm_chain_build_done(error, &nmreq);
+ /* Append the args mbufs */
+ if (!error)
+ error = mbuf_setnext(nmreq.nmc_mcur, mrest);
+ break;
+ case RPCAUTH_SYS: {
+ nfsm_chain_add_32(error, &nmreq, RPCAUTH_SYS);
+ nfsm_chain_add_32(error, &nmreq, authsiz);
+ nfsm_chain_add_32(error, &nmreq, 0); /* stamp */
+ nfsm_chain_add_32(error, &nmreq, 0); /* zero-length hostname */
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(cred)); /* UID */
+ nfsm_chain_add_32(error, &nmreq, kauth_cred_getgid(cred)); /* GID */
+ nfsm_chain_add_32(error, &nmreq, groupcount);/* additional GIDs */
+ for (i = 0; i < groupcount; i++)
+ nfsm_chain_add_32(error, &nmreq, grouplist[i]);
+
+ /* And the verifier... */
+ nfsm_chain_add_32(error, &nmreq, RPCAUTH_NONE); /* flavor */
+ nfsm_chain_add_32(error, &nmreq, 0); /* length */
+ nfsm_chain_build_done(error, &nmreq);
+
+ /* Append the args mbufs */
+ if (!error)
+ error = mbuf_setnext(nmreq.nmc_mcur, mrest);
+ break;
+ }
+ case RPCAUTH_KRB5:
+ case RPCAUTH_KRB5I:
+ case RPCAUTH_KRB5P:
+ error = nfs_gss_clnt_cred_put(req, &nmreq, mrest);
+ if (error == ENEEDAUTH) {
+ int count = nmp->nm_numgrps < NGROUPS ? nmp->nm_numgrps : NGROUPS;
+
+ /*
+ * Use sec=sys for this user
+ */
+ error = 0;
+ req->r_auth = auth_type = RPCAUTH_SYS;
+ groupcount = get_auxiliary_groups(cred, grouplist, count);
+ if (groupcount < 0)
+ return (EINVAL);
+ auth_len = ((uint32_t)groupcount + 5) * NFSX_UNSIGNED;
+ authsiz = nfsm_rndup(auth_len);
+ goto add_cred;
}
- } else {
- cnp->cn_flags |= NOCROSSMOUNT;
+ break;
+ };
+
+ /* finish setting up the packet */
+ if (!error)
+ error = mbuf_pkthdr_setrcvif(mreq, 0);
+
+ if (error) {
+ mbuf_freem(mreq);
+ return (error);
}
-#else
- cnp->cn_flags |= NOCROSSMOUNT;
-#endif
- ndp->ni_usedvp = dp;
+ /* Calculate the size of the request */
+ reqlen = 0;
+ for (mb = nmreq.nmc_mhead; mb; mb = mbuf_next(mb))
+ reqlen += mbuf_len(mb);
+
+ mbuf_pkthdr_setlen(mreq, reqlen);
- for (;;) {
- cnp->cn_nameptr = cnp->cn_pnbuf;
- ndp->ni_startdir = dp;
- /*
- * And call lookup() to do the real work
- */
- error = lookup(ndp);
- if (error)
- break;
/*
- * Check for encountering a symbolic link
+ * If the request goes on a TCP stream,
+ * set its size in the RPC record mark.
+ * The record mark count doesn't include itself
+ * and the last fragment bit is set.
*/
- if ((cnp->cn_flags & ISSYMLINK) == 0) {
- return (0);
- } else {
- if ((cnp->cn_flags & FSNODELOCKHELD)) {
- cnp->cn_flags &= ~FSNODELOCKHELD;
- unlock_fsnode(ndp->ni_dvp, NULL);
- }
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- if (!pubflag) {
-#endif
- if (cnp->cn_flags & (LOCKPARENT | WANTPARENT))
- vnode_put(ndp->ni_dvp);
- if (ndp->ni_vp) {
- vnode_put(ndp->ni_vp);
- ndp->ni_vp = NULL;
- }
- error = EINVAL;
- break;
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- }
+ if (sotype == SOCK_STREAM)
+ nfsm_chain_set_recmark(error, &nmreq,
+ (reqlen - NFSX_UNSIGNED) | 0x80000000);
- if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
- vnode_put(ndp->ni_vp);
- ndp->ni_vp = NULL;
- error = ELOOP;
- break;
- }
- /* XXX assert(olen <= MAXPATHLEN - 1); */
- if (ndp->ni_pathlen > 1) {
- MALLOC_ZONE(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
- if (!cp) {
- vnode_put(ndp->ni_vp);
- ndp->ni_vp = NULL;
- error = ENOMEM;
- break;
- }
- } else {
- cp = cnp->cn_pnbuf;
- }
- auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
- &uio_buf[0], sizeof(uio_buf));
- if (!auio) {
- vnode_put(ndp->ni_vp);
- ndp->ni_vp = NULL;
- if (ndp->ni_pathlen > 1)
- FREE_ZONE(cp, MAXPATHLEN, M_NAMEI);
- error = ENOMEM;
- break;
- }
- uio_addiov(auio, CAST_USER_ADDR_T(cp), MAXPATHLEN);
- error = VNOP_READLINK(ndp->ni_vp, auio, cnp->cn_context);
- if (error) {
-badlink:
- vnode_put(ndp->ni_vp);
- ndp->ni_vp = NULL;
- if (ndp->ni_pathlen > 1)
- FREE_ZONE(cp, MAXPATHLEN, M_NAMEI);
- break;
- }
- linklen = MAXPATHLEN - uio_resid(auio);
- if (linklen == 0) {
- error = ENOENT;
- goto badlink;
- }
- if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
- error = ENAMETOOLONG;
- goto badlink;
- }
- if (ndp->ni_pathlen > 1) {
- long len = cnp->cn_pnlen;
- tmppn = cnp->cn_pnbuf;
- cnp->cn_pnbuf = cp;
- cnp->cn_pnlen = olen + 1;
- bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
- FREE_ZONE(tmppn, len, M_NAMEI);
- } else
- cnp->cn_pnbuf[linklen] = '\0';
- ndp->ni_pathlen += linklen;
-
- vnode_put(ndp->ni_vp);
- dp = ndp->ni_dvp;
- ndp->ni_dvp = NULL;
+ *mreqp = mreq;
+ return (0);
+}
+/*
+ * Parse an NFS file attribute structure out of an mbuf chain.
+ */
+int
+nfs_parsefattr(struct nfsm_chain *nmc, int nfsvers, struct nfs_vattr *nvap)
+{
+ int error = 0;
+ enum vtype vtype;
+ nfstype nvtype;
+ u_short vmode;
+ uint32_t val, val2;
+ dev_t rdev;
+
+ val = val2 = 0;
+ NVATTR_INIT(nvap);
+
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TYPE);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_MODE);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_NUMLINKS);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_OWNER);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_OWNER_GROUP);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_SIZE);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_SPACE_USED);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_RAWDEV);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_FSID);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_FILEID);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_ACCESS);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_MODIFY);
+ NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_METADATA);
+
+ nfsm_chain_get_32(error, nmc, nvtype);
+ nfsm_chain_get_32(error, nmc, vmode);
+ nfsmout_if(error);
+
+ if (nfsvers == NFS_VER3) {
+ nvap->nva_type = vtype = nfstov_type(nvtype, nfsvers);
+ } else {
/*
- * Check if root directory should replace current directory.
+ * The duplicate information returned in fa_type and fa_mode
+ * is an ambiguity in the NFS version 2 protocol.
+ *
+ * VREG should be taken literally as a regular file. If a
+ * server intends to return some type information differently
+ * in the upper bits of the mode field (e.g. for sockets, or
+ * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we
+ * leave the examination of the mode bits even in the VREG
+ * case to avoid breakage for bogus servers, but we make sure
+ * that there are actually type bits set in the upper part of
+ * fa_mode (and failing that, trust the va_type field).
+ *
+ * NFSv3 cleared the issue, and requires fa_mode to not
+ * contain any type information (while also introducing
+ * sockets and FIFOs for fa_type).
*/
- if (cnp->cn_pnbuf[0] == '/') {
- vnode_put(dp);
- dp = ndp->ni_rootdir;
- error = vnode_get(dp);
- if (error)
- break;
- }
-#endif
+ vtype = nfstov_type(nvtype, nfsvers);
+ if ((vtype == VNON) || ((vtype == VREG) && ((vmode & S_IFMT) != 0)))
+ vtype = IFTOVT(vmode);
+ nvap->nva_type = vtype;
}
- }
-out:
- tmppn = cnp->cn_pnbuf;
- cnp->cn_pnbuf = NULL;
- cnp->cn_flags &= ~HASBUF;
- FREE_ZONE(tmppn, cnp->cn_pnlen, M_NAMEI);
+ nvap->nva_mode = (vmode & 07777);
+
+ nfsm_chain_get_32(error, nmc, nvap->nva_nlink);
+ nfsm_chain_get_32(error, nmc, nvap->nva_uid);
+ nfsm_chain_get_32(error, nmc, nvap->nva_gid);
+
+ if (nfsvers == NFS_VER3) {
+ nfsm_chain_get_64(error, nmc, nvap->nva_size);
+ nfsm_chain_get_64(error, nmc, nvap->nva_bytes);
+ nfsm_chain_get_32(error, nmc, nvap->nva_rawdev.specdata1);
+ nfsm_chain_get_32(error, nmc, nvap->nva_rawdev.specdata2);
+ nfsmout_if(error);
+ nfsm_chain_get_64(error, nmc, nvap->nva_fsid.major);
+ nvap->nva_fsid.minor = 0;
+ nfsm_chain_get_64(error, nmc, nvap->nva_fileid);
+ } else {
+ nfsm_chain_get_32(error, nmc, nvap->nva_size);
+ nfsm_chain_adv(error, nmc, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmc, rdev);
+ nfsmout_if(error);
+ nvap->nva_rawdev.specdata1 = major(rdev);
+ nvap->nva_rawdev.specdata2 = minor(rdev);
+ nfsm_chain_get_32(error, nmc, val); /* blocks */
+ nfsmout_if(error);
+ nvap->nva_bytes = val * NFS_FABLKSIZE;
+ nfsm_chain_get_32(error, nmc, val);
+ nfsmout_if(error);
+ nvap->nva_fsid.major = (uint64_t)val;
+ nvap->nva_fsid.minor = 0;
+ nfsm_chain_get_32(error, nmc, val);
+ nfsmout_if(error);
+ nvap->nva_fileid = (uint64_t)val;
+ /* Really ugly NFSv2 kludge. */
+ if ((vtype == VCHR) && (rdev == (dev_t)0xffffffff))
+ nvap->nva_type = VFIFO;
+ }
+ nfsm_chain_get_time(error, nmc, nfsvers,
+ nvap->nva_timesec[NFSTIME_ACCESS],
+ nvap->nva_timensec[NFSTIME_ACCESS]);
+ nfsm_chain_get_time(error, nmc, nfsvers,
+ nvap->nva_timesec[NFSTIME_MODIFY],
+ nvap->nva_timensec[NFSTIME_MODIFY]);
+ nfsm_chain_get_time(error, nmc, nfsvers,
+ nvap->nva_timesec[NFSTIME_CHANGE],
+ nvap->nva_timensec[NFSTIME_CHANGE]);
+nfsmout:
return (error);
}
/*
- * A fiddled version of m_adj() that ensures null fill to a long
- * boundary and only trims off the back end
+ * Load the attribute cache (that lives in the nfsnode entry) with
+ * the value pointed to by nvap, unless the file type in the attribute
+ * cache doesn't match the file type in the nvap, in which case log a
+ * warning and return ESTALE.
+ *
+ * If the dontshrink flag is set, then it's not safe to call ubc_setsize()
+ * to shrink the size of the file.
*/
-void
-nfsm_adj(mp, len, nul)
- mbuf_t mp;
- int len;
- int nul;
-{
- mbuf_t m, mnext;
- int count, i, mlen;
- char *cp;
+int
+nfs_loadattrcache(
+ nfsnode_t np,
+ struct nfs_vattr *nvap,
+ u_int64_t *xidp,
+ int dontshrink)
+{
+ mount_t mp;
+ vnode_t vp;
+ struct timeval now;
+ struct nfs_vattr *npnvap;
+ int xattr = np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR;
+ int referral = np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL;
+ int aclbit, monitored, error = 0;
+ kauth_acl_t acl;
+ struct nfsmount *nmp;
+ uint32_t events = np->n_events;
+
+ if (np->n_hflag & NHINIT) {
+ vp = NULL;
+ mp = np->n_mount;
+ } else {
+ vp = NFSTOV(np);
+ mp = vnode_mount(vp);
+ }
+ monitored = vp ? vnode_ismonitored(vp) : 0;
+
+ FSDBG_TOP(527, np, vp, *xidp >> 32, *xidp);
+
+ if (!((nmp = VFSTONFS(mp)))) {
+ FSDBG_BOT(527, ENXIO, 1, 0, *xidp);
+ return (ENXIO);
+ }
+
+ if (*xidp < np->n_xid) {
+ /*
+ * We have already updated attributes with a response from
+ * a later request. The attributes we have here are probably
+ * stale so we drop them (just return). However, our
+ * out-of-order receipt could be correct - if the requests were
+ * processed out of order at the server. Given the uncertainty
+ * we invalidate our cached attributes. *xidp is zeroed here
+ * to indicate the attributes were dropped - only getattr
+ * cares - it needs to retry the rpc.
+ */
+ NATTRINVALIDATE(np);
+ FSDBG_BOT(527, 0, np, np->n_xid, *xidp);
+ *xidp = 0;
+ return (0);
+ }
+
+ if (vp && (nvap->nva_type != vnode_vtype(vp))) {
+ /*
+ * The filehandle has changed type on us. This can be
+ * caused by either the server not having unique filehandles
+ * or because another client has removed the previous
+ * filehandle and a new object (of a different type)
+ * has been created with the same filehandle.
+ *
+ * We can't simply switch the type on the vnode because
+ * there may be type-specific fields that need to be
+ * cleaned up or set up.
+ *
+ * So, what should we do with this vnode?
+ *
+ * About the best we can do is log a warning and return
+ * an error. ESTALE is about the closest error, but it
+ * is a little strange that we come up with this error
+ * internally instead of simply passing it through from
+ * the server. Hopefully, the vnode will be reclaimed
+ * soon so the filehandle can be reincarnated as the new
+ * object type.
+ */
+ printf("nfs loadattrcache vnode changed type, was %d now %d\n",
+ vnode_vtype(vp), nvap->nva_type);
+ error = ESTALE;
+ if (monitored)
+ events |= VNODE_EVENT_DELETE;
+ goto out;
+ }
+
+ npnvap = &np->n_vattr;
/*
- * Trim from tail. Scan the mbuf chain,
- * calculating its length and finding the last mbuf.
- * If the adjustment only affects this mbuf, then just
- * adjust and return. Otherwise, rescan and truncate
- * after the remaining size.
+ * The ACL cache needs special handling because it is not
+ * always updated. Save current ACL cache state so it can
+ * be restored after copying the new attributes into place.
*/
- count = 0;
- m = mp;
- for (;;) {
- mlen = mbuf_len(m);
- count += mlen;
- mnext = mbuf_next(m);
- if (mnext == NULL)
- break;
- m = mnext;
+ aclbit = NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_ACL);
+ acl = npnvap->nva_acl;
+
+ if (monitored) {
+ /*
+ * For monitored nodes, check for attribute changes that should generate events.
+ */
+ if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_NUMLINKS) &&
+ (nvap->nva_nlink != npnvap->nva_nlink))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_LINK;
+ if (events & VNODE_EVENT_PERMS)
+ /* no need to do all the checking if it's already set */;
+ else if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_MODE) &&
+ (nvap->nva_mode != npnvap->nva_mode))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ else if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER) &&
+ (nvap->nva_uid != npnvap->nva_uid))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ else if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER_GROUP) &&
+ (nvap->nva_gid != npnvap->nva_gid))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ else if (nmp->nm_vers >= NFS_VER4) {
+ if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER) &&
+ !kauth_guid_equal(&nvap->nva_uuuid, &npnvap->nva_uuuid))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ else if (NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER_GROUP) &&
+ !kauth_guid_equal(&nvap->nva_guuid, &npnvap->nva_guuid))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ else if ((NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_ACL) &&
+ nvap->nva_acl && npnvap->nva_acl &&
+ ((nvap->nva_acl->acl_entrycount != npnvap->nva_acl->acl_entrycount) ||
+ bcmp(nvap->nva_acl, npnvap->nva_acl, KAUTH_ACL_COPYSIZE(nvap->nva_acl)))))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_PERMS;
+ }
+ if (((nmp->nm_vers >= NFS_VER4) && (nvap->nva_change != npnvap->nva_change)) ||
+ (NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_TIME_MODIFY) &&
+ ((nvap->nva_timesec[NFSTIME_MODIFY] != npnvap->nva_timesec[NFSTIME_MODIFY]) ||
+ (nvap->nva_timensec[NFSTIME_MODIFY] != npnvap->nva_timensec[NFSTIME_MODIFY]))))
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_WRITE;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_RAWDEV) &&
+ ((nvap->nva_rawdev.specdata1 != npnvap->nva_rawdev.specdata1) ||
+ (nvap->nva_rawdev.specdata2 != npnvap->nva_rawdev.specdata2)))
+ events |= VNODE_EVENT_ATTRIB;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_FILEID) &&
+ (nvap->nva_fileid != npnvap->nva_fileid))
+ events |= VNODE_EVENT_ATTRIB;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_ARCHIVE) &&
+ ((nvap->nva_flags & NFS_FFLAG_ARCHIVED) != (npnvap->nva_flags & NFS_FFLAG_ARCHIVED)))
+ events |= VNODE_EVENT_ATTRIB;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_HIDDEN) &&
+ ((nvap->nva_flags & NFS_FFLAG_HIDDEN) != (npnvap->nva_flags & NFS_FFLAG_HIDDEN)))
+ events |= VNODE_EVENT_ATTRIB;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_TIME_CREATE) &&
+ ((nvap->nva_timesec[NFSTIME_CREATE] != npnvap->nva_timesec[NFSTIME_CREATE]) ||
+ (nvap->nva_timensec[NFSTIME_CREATE] != npnvap->nva_timensec[NFSTIME_CREATE])))
+ events |= VNODE_EVENT_ATTRIB;
+ if (!events && NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_TIME_BACKUP) &&
+ ((nvap->nva_timesec[NFSTIME_BACKUP] != npnvap->nva_timesec[NFSTIME_BACKUP]) ||
+ (nvap->nva_timensec[NFSTIME_BACKUP] != npnvap->nva_timensec[NFSTIME_BACKUP])))
+ events |= VNODE_EVENT_ATTRIB;
}
- if (mlen > len) {
- mlen -= len;
- mbuf_setlen(m, mlen);
- if (nul > 0) {
- cp = (caddr_t)mbuf_data(m) + mlen - nul;
- for (i = 0; i < nul; i++)
- *cp++ = '\0';
+
+ /* Copy the attributes to the attribute cache */
+ bcopy((caddr_t)nvap, (caddr_t)npnvap, sizeof(*nvap));
+
+ microuptime(&now);
+ np->n_attrstamp = now.tv_sec;
+ np->n_xid = *xidp;
+ /* NFS_FFLAG_IS_ATTR and NFS_FFLAG_TRIGGER_REFERRAL need to be sticky... */
+ if (vp && xattr)
+ nvap->nva_flags |= xattr;
+ if (vp && referral)
+ nvap->nva_flags |= referral;
+
+ if (NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_ACL)) {
+ /* we're updating the ACL */
+ if (nvap->nva_acl) {
+ /* make a copy of the acl for the cache */
+ npnvap->nva_acl = kauth_acl_alloc(nvap->nva_acl->acl_entrycount);
+ if (npnvap->nva_acl) {
+ bcopy(nvap->nva_acl, npnvap->nva_acl, KAUTH_ACL_COPYSIZE(nvap->nva_acl));
+ } else {
+ /* can't make a copy to cache, invalidate ACL cache */
+ NFS_BITMAP_CLR(npnvap->nva_bitmap, NFS_FATTR_ACL);
+ NACLINVALIDATE(np);
+ aclbit = 0;
+ }
+ }
+ if (acl) {
+ kauth_acl_free(acl);
+ acl = NULL;
}
- return;
}
- count -= len;
- if (count < 0)
- count = 0;
+ if (NFS_BITMAP_ISSET(npnvap->nva_bitmap, NFS_FATTR_ACL)) {
+ /* update the ACL timestamp */
+ np->n_aclstamp = now.tv_sec;
+ } else {
+ /* we aren't updating the ACL, so restore original values */
+ if (aclbit)
+ NFS_BITMAP_SET(npnvap->nva_bitmap, NFS_FATTR_ACL);
+ npnvap->nva_acl = acl;
+ }
+
+#if CONFIG_TRIGGERS
/*
- * Correct length for chain is "count".
- * Find the mbuf with last data, adjust its length,
- * and toss data from remaining mbufs on chain.
+ * For NFSv4, if the fsid doesn't match the fsid for the mount, then
+ * this node is for a different file system on the server. So we mark
+ * this node as a trigger node that will trigger the mirror mount.
*/
- for (m = mp; m; m = mbuf_next(m)) {
- mlen = mbuf_len(m);
- if (mlen >= count) {
- mlen = count;
- mbuf_setlen(m, count);
- if (nul > 0) {
- cp = (caddr_t)mbuf_data(m) + mlen - nul;
- for (i = 0; i < nul; i++)
- *cp++ = '\0';
- }
- break;
+ if ((nmp->nm_vers >= NFS_VER4) && (nvap->nva_type == VDIR) &&
+ ((np->n_vattr.nva_fsid.major != nmp->nm_fsid.major) ||
+ (np->n_vattr.nva_fsid.minor != nmp->nm_fsid.minor)))
+ np->n_vattr.nva_flags |= NFS_FFLAG_TRIGGER;
+#endif
+
+ if (!vp || (nvap->nva_type != VREG)) {
+ np->n_size = nvap->nva_size;
+ } else if (nvap->nva_size != np->n_size) {
+ FSDBG(527, np, nvap->nva_size, np->n_size, (nvap->nva_type == VREG) | (np->n_flag & NMODIFIED ? 6 : 4));
+ if (!UBCINFOEXISTS(vp) || (dontshrink && (nvap->nva_size < np->n_size))) {
+ /* asked not to shrink, so stick with current size */
+ FSDBG(527, np, np->n_size, np->n_vattr.nva_size, 0xf00d0001);
+ nvap->nva_size = np->n_size;
+ NATTRINVALIDATE(np);
+ } else if ((np->n_flag & NMODIFIED) && (nvap->nva_size < np->n_size)) {
+ /* if we've modified, stick with larger size */
+ FSDBG(527, np, np->n_size, np->n_vattr.nva_size, 0xf00d0002);
+ nvap->nva_size = np->n_size;
+ npnvap->nva_size = np->n_size;
+ } else {
+ /*
+ * n_size is protected by the data lock, so we need to
+ * defer updating it until it's safe. We save the new size
+ * and set a flag and it'll get updated the next time we get/drop
+ * the data lock or the next time we do a getattr.
+ */
+ np->n_newsize = nvap->nva_size;
+ SET(np->n_flag, NUPDATESIZE);
+ if (monitored)
+ events |= VNODE_EVENT_ATTRIB | VNODE_EVENT_EXTEND;
}
- count -= mlen;
}
- for (m = mbuf_next(m); m; m = mbuf_next(m))
- mbuf_setlen(m, 0);
-}
-/*
- * Make these functions instead of macros, so that the kernel text size
- * doesn't get too big...
- */
-void
-nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp)
- struct nfsrv_descript *nfsd;
- int before_ret;
- struct vnode_attr *before_vap;
- int after_ret;
- struct vnode_attr *after_vap;
- mbuf_t *mbp;
- char **bposp;
-{
- mbuf_t mb = *mbp, mb2;
- char *bpos = *bposp;
- u_long *tl;
+ if (np->n_flag & NCHG) {
+ if (np->n_flag & NACC) {
+ nvap->nva_timesec[NFSTIME_ACCESS] = np->n_atim.tv_sec;
+ nvap->nva_timensec[NFSTIME_ACCESS] = np->n_atim.tv_nsec;
+ }
+ if (np->n_flag & NUPD) {
+ nvap->nva_timesec[NFSTIME_MODIFY] = np->n_mtim.tv_sec;
+ nvap->nva_timensec[NFSTIME_MODIFY] = np->n_mtim.tv_nsec;
+ }
+ }
- if (before_ret) {
- nfsm_build(tl, u_long *, NFSX_UNSIGNED);
- *tl = nfs_false;
- } else {
- nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED);
- *tl++ = nfs_true;
- txdr_hyper(&(before_vap->va_data_size), tl);
- tl += 2;
- txdr_nfsv3time(&(before_vap->va_modify_time), tl);
- tl += 2;
- txdr_nfsv3time(&(before_vap->va_change_time), tl);
- }
- *bposp = bpos;
- *mbp = mb;
- nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp);
+out:
+ if (monitored && events)
+ nfs_vnode_notify(np, events);
+ FSDBG_BOT(527, error, np, np->n_size, *xidp);
+ return (error);
}
-void
-nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp)
- struct nfsrv_descript *nfsd;
- int after_ret;
- struct vnode_attr *after_vap;
- mbuf_t *mbp;
- char **bposp;
+/*
+ * Calculate the attribute timeout based on
+ * how recently the file has been modified.
+ */
+int
+nfs_attrcachetimeout(nfsnode_t np)
{
- mbuf_t mb = *mbp, mb2;
- char *bpos = *bposp;
- u_long *tl;
- struct nfs_fattr *fp;
-
- if (after_ret) {
- nfsm_build(tl, u_long *, NFSX_UNSIGNED);
- *tl = nfs_false;
- } else {
- nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR);
- *tl++ = nfs_true;
- fp = (struct nfs_fattr *)tl;
- nfsm_srvfattr(nfsd, after_vap, fp);
- }
- *mbp = mb;
- *bposp = bpos;
-}
+ struct nfsmount *nmp;
+ struct timeval now;
+ int isdir;
+ uint32_t timeo;
-void
-nfsm_srvfattr(nfsd, vap, fp)
- struct nfsrv_descript *nfsd;
- struct vnode_attr *vap;
- struct nfs_fattr *fp;
-{
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (0);
- // XXX Should we assert here that all fields are supported?
+ isdir = vnode_isdir(NFSTOV(np));
- fp->fa_nlink = txdr_unsigned(vap->va_nlink);
- fp->fa_uid = txdr_unsigned(vap->va_uid);
- fp->fa_gid = txdr_unsigned(vap->va_gid);
- if (nfsd->nd_flag & ND_NFSV3) {
- fp->fa_type = vtonfsv3_type(vap->va_type);
- fp->fa_mode = vtonfsv3_mode(vap->va_mode);
- txdr_hyper(&vap->va_data_size, &fp->fa3_size);
- txdr_hyper(&vap->va_data_alloc, &fp->fa3_used);
- fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev));
- fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev));
- fp->fa3_fsid.nfsuquad[0] = 0;
- fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid);
- txdr_hyper(&vap->va_fileid, &fp->fa3_fileid);
- txdr_nfsv3time(&vap->va_access_time, &fp->fa3_atime);
- txdr_nfsv3time(&vap->va_modify_time, &fp->fa3_mtime);
- txdr_nfsv3time(&vap->va_change_time, &fp->fa3_ctime);
+ if ((nmp->nm_vers >= NFS_VER4) && (np->n_openflags & N_DELEG_MASK)) {
+ /* If we have a delegation, we always use the max timeout. */
+ timeo = isdir ? nmp->nm_acdirmax : nmp->nm_acregmax;
+ } else if ((np)->n_flag & NMODIFIED) {
+ /* If we have modifications, we always use the min timeout. */
+ timeo = isdir ? nmp->nm_acdirmin : nmp->nm_acregmin;
} else {
- fp->fa_type = vtonfsv2_type(vap->va_type);
- fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
- fp->fa2_size = txdr_unsigned(vap->va_data_size);
- fp->fa2_blocksize = txdr_unsigned(vap->va_iosize);
- if (vap->va_type == VFIFO)
- fp->fa2_rdev = 0xffffffff;
- else
- fp->fa2_rdev = txdr_unsigned(vap->va_rdev);
- fp->fa2_blocks = txdr_unsigned(vap->va_data_alloc / NFS_FABLKSIZE);
- fp->fa2_fsid = txdr_unsigned(vap->va_fsid);
- fp->fa2_fileid = txdr_unsigned(vap->va_fileid);
- txdr_nfsv2time(&vap->va_access_time, &fp->fa2_atime);
- txdr_nfsv2time(&vap->va_modify_time, &fp->fa2_mtime);
- txdr_nfsv2time(&vap->va_change_time, &fp->fa2_ctime);
+ /* Otherwise, we base the timeout on how old the file seems. */
+ /* Note that if the client and server clocks are way out of sync, */
+ /* timeout will probably get clamped to a min or max value */
+ microtime(&now);
+ timeo = (now.tv_sec - (np)->n_vattr.nva_timesec[NFSTIME_MODIFY]) / 10;
+ if (isdir) {
+ if (timeo < nmp->nm_acdirmin)
+ timeo = nmp->nm_acdirmin;
+ else if (timeo > nmp->nm_acdirmax)
+ timeo = nmp->nm_acdirmax;
+ } else {
+ if (timeo < nmp->nm_acregmin)
+ timeo = nmp->nm_acregmin;
+ else if (timeo > nmp->nm_acregmax)
+ timeo = nmp->nm_acregmax;
+ }
}
+
+ return (timeo);
}
/*
- * Build hash lists of net addresses and hang them off the NFS export.
- * Called by nfsrv_export() to set up the lists of export addresses.
+ * Check the attribute cache time stamp.
+ * If the cache is valid, copy contents to *nvaper and return 0
+ * otherwise return an error.
+ * Must be called with the node locked.
*/
-static int
-nfsrv_hang_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
+int
+nfs_getattrcache(nfsnode_t np, struct nfs_vattr *nvaper, int flags)
{
- struct nfs_export_net_args nxna;
- struct nfs_netopt *no;
- struct radix_node_head *rnh;
- struct radix_node *rn;
- struct sockaddr *saddr, *smask;
- struct domain *dom;
- int i, error;
- unsigned int net;
- user_addr_t uaddr;
- kauth_cred_t cred;
- struct ucred temp_cred;
-
- uaddr = unxa->nxa_nets;
- for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
- error = copyin(uaddr, &nxna, sizeof(nxna));
- if (error)
- return (error);
+ struct nfs_vattr *nvap;
+ struct timeval nowup;
+ int32_t timeo;
+ struct nfsmount *nmp;
- if (nxna.nxna_flags & (NX_MAPROOT|NX_MAPALL)) {
- bzero(&temp_cred, sizeof(temp_cred));
- temp_cred.cr_uid = nxna.nxna_cred.cr_uid;
- temp_cred.cr_ngroups = nxna.nxna_cred.cr_ngroups;
- for (i=0; i < nxna.nxna_cred.cr_ngroups && i < NGROUPS; i++)
- temp_cred.cr_groups[i] = nxna.nxna_cred.cr_groups[i];
+ /* Check if the attributes are valid. */
+ if (!NATTRVALID(np) || ((flags & NGA_ACL) && !NACLVALID(np))) {
+ FSDBG(528, np, 0, 0xffffff01, ENOENT);
+ OSAddAtomic64(1, &nfsstats.attrcache_misses);
+ return (ENOENT);
+ }
- cred = kauth_cred_create(&temp_cred);
- if (!cred)
- return (ENOMEM);
- } else {
- cred = NOCRED;
+ nmp = NFSTONMP(np);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ /*
+ * Verify the cached attributes haven't timed out.
+ * If the server isn't responding, skip the check
+ * and return cached attributes.
+ */
+ if (!nfs_use_cache(nmp)) {
+ timeo = nfs_attrcachetimeout(np);
+ microuptime(&nowup);
+ if ((nowup.tv_sec - np->n_attrstamp) >= timeo) {
+ FSDBG(528, np, 0, 0xffffff02, ENOENT);
+ OSAddAtomic64(1, &nfsstats.attrcache_misses);
+ return (ENOENT);
}
-
- if (nxna.nxna_addr.ss_len == 0) {
- /* No address means this is a default/world export */
- if (nx->nx_flags & NX_DEFAULTEXPORT)
- return (EEXIST);
- nx->nx_flags |= NX_DEFAULTEXPORT;
- nx->nx_defopt.nxo_flags = nxna.nxna_flags;
- nx->nx_defopt.nxo_cred = cred;
- nx->nx_expcnt++;
- continue;
+ if ((flags & NGA_ACL) && ((nowup.tv_sec - np->n_aclstamp) >= timeo)) {
+ FSDBG(528, np, 0, 0xffffff02, ENOENT);
+ OSAddAtomic64(1, &nfsstats.attrcache_misses);
+ return (ENOENT);
}
+ }
- i = sizeof(struct nfs_netopt);
- i += nxna.nxna_addr.ss_len + nxna.nxna_mask.ss_len;
- MALLOC(no, struct nfs_netopt *, i, M_NETADDR, M_WAITOK);
- if (!no)
- return (ENOMEM);
- bzero(no, sizeof(struct nfs_netopt));
- no->no_opt.nxo_flags = nxna.nxna_flags;
- no->no_opt.nxo_cred = cred;
+ nvap = &np->n_vattr;
+ FSDBG(528, np, nvap->nva_size, np->n_size, 0xcace);
+ OSAddAtomic64(1, &nfsstats.attrcache_hits);
- saddr = (struct sockaddr *)(no + 1);
- bcopy(&nxna.nxna_addr, saddr, nxna.nxna_addr.ss_len);
- if (nxna.nxna_mask.ss_len) {
- smask = (struct sockaddr *)((caddr_t)saddr + nxna.nxna_addr.ss_len);
- bcopy(&nxna.nxna_mask, smask, nxna.nxna_mask.ss_len);
+ if (nvap->nva_type != VREG) {
+ np->n_size = nvap->nva_size;
+ } else if (nvap->nva_size != np->n_size) {
+ FSDBG(528, np, nvap->nva_size, np->n_size, (nvap->nva_type == VREG) | (np->n_flag & NMODIFIED ? 6 : 4));
+ if ((np->n_flag & NMODIFIED) && (nvap->nva_size < np->n_size)) {
+ /* if we've modified, stick with larger size */
+ nvap->nva_size = np->n_size;
} else {
- smask = NULL;
- }
- i = saddr->sa_family;
- if ((rnh = nx->nx_rtable[i]) == 0) {
/*
- * Seems silly to initialize every AF when most are not
- * used, do so on demand here
+ * n_size is protected by the data lock, so we need to
+ * defer updating it until it's safe. We save the new size
+ * and set a flag and it'll get updated the next time we get/drop
+ * the data lock or the next time we do a getattr.
*/
- for (dom = domains; dom; dom = dom->dom_next)
- if (dom->dom_family == i && dom->dom_rtattach) {
- dom->dom_rtattach((void **)&nx->nx_rtable[i],
- dom->dom_rtoffset);
- break;
- }
- if ((rnh = nx->nx_rtable[i]) == 0) {
- if (IS_VALID_CRED(cred))
- kauth_cred_unref(&cred);
- _FREE(no, M_NETADDR);
- return (ENOBUFS);
- }
+ np->n_newsize = nvap->nva_size;
+ SET(np->n_flag, NUPDATESIZE);
}
- rn = (*rnh->rnh_addaddr)((caddr_t)saddr, (caddr_t)smask, rnh, no->no_rnodes);
- if (rn == 0) {
- /*
- * One of the reasons that rnh_addaddr may fail is that
- * the entry already exists. To check for this case, we
- * look up the entry to see if it is there. If so, we
- * do not need to make a new entry but do continue.
- */
- int matched = 0;
- rn = (*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
- if (rn != 0 && (rn->rn_flags & RNF_ROOT) == 0 &&
- (((struct nfs_netopt *)rn)->no_opt.nxo_flags == nxna.nxna_flags)) {
- kauth_cred_t cred2 = ((struct nfs_netopt *)rn)->no_opt.nxo_cred;
- if (cred && cred2 && (cred->cr_uid == cred2->cr_uid) &&
- (cred->cr_ngroups == cred2->cr_ngroups)) {
- for (i=0; i < cred2->cr_ngroups && i < NGROUPS; i++)
- if (cred->cr_groups[i] != cred2->cr_groups[i])
- break;
- if (i >= cred2->cr_ngroups || i >= NGROUPS)
- matched = 1;
- }
- }
- if (IS_VALID_CRED(cred))
- kauth_cred_unref(&cred);
- _FREE(no, M_NETADDR);
- if (matched)
- continue;
- return (EPERM);
- }
- nx->nx_expcnt++;
}
+ bcopy((caddr_t)nvap, (caddr_t)nvaper, sizeof(struct nfs_vattr));
+ if (np->n_flag & NCHG) {
+ if (np->n_flag & NACC) {
+ nvaper->nva_timesec[NFSTIME_ACCESS] = np->n_atim.tv_sec;
+ nvaper->nva_timensec[NFSTIME_ACCESS] = np->n_atim.tv_nsec;
+ }
+ if (np->n_flag & NUPD) {
+ nvaper->nva_timesec[NFSTIME_MODIFY] = np->n_mtim.tv_sec;
+ nvaper->nva_timensec[NFSTIME_MODIFY] = np->n_mtim.tv_nsec;
+ }
+ }
+ if (nvap->nva_acl) {
+ if (flags & NGA_ACL) {
+ nvaper->nva_acl = kauth_acl_alloc(nvap->nva_acl->acl_entrycount);
+ if (!nvaper->nva_acl)
+ return (ENOMEM);
+ bcopy(nvap->nva_acl, nvaper->nva_acl, KAUTH_ACL_COPYSIZE(nvap->nva_acl));
+ } else {
+ nvaper->nva_acl = NULL;
+ }
+ }
return (0);
}
/*
- * In order to properly track an export's netopt count, we need to pass
- * an additional argument to nfsrv_free_netopt() so that it can decrement
- * the export's netopt count.
+ * When creating file system objects:
+ * Don't bother setting UID if it's the same as the credential performing the create.
+ * Don't bother setting GID if it's the same as the directory or credential.
*/
-struct nfsrv_free_netopt_arg {
- uint32_t *cnt;
- struct radix_node_head *rnh;
-};
-
-static int
-nfsrv_free_netopt(struct radix_node *rn, void *w)
+void
+nfs_avoid_needless_id_setting_on_create(nfsnode_t dnp, struct vnode_attr *vap, vfs_context_t ctx)
{
- struct nfsrv_free_netopt_arg *fna = (struct nfsrv_free_netopt_arg *)w;
- struct radix_node_head *rnh = fna->rnh;
- uint32_t *cnt = fna->cnt;
- struct nfs_netopt *nno = (struct nfs_netopt *)rn;
-
- (*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
- if (IS_VALID_CRED(nno->no_opt.nxo_cred))
- kauth_cred_unref(&nno->no_opt.nxo_cred);
- _FREE((caddr_t)rn, M_NETADDR);
- *cnt -= 1;
- return (0);
+ if (VATTR_IS_ACTIVE(vap, va_uid)) {
+ if (kauth_cred_getuid(vfs_context_ucred(ctx)) == vap->va_uid) {
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_uuuid);
+ }
+ }
+ if (VATTR_IS_ACTIVE(vap, va_gid)) {
+ if ((vap->va_gid == dnp->n_vattr.nva_gid) ||
+ (kauth_cred_getgid(vfs_context_ucred(ctx)) == vap->va_gid)) {
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+ VATTR_CLEAR_ACTIVE(vap, va_guuid);
+ }
+ }
}
/*
- * Free the net address hash lists that are hanging off the mount points.
+ * Convert a universal address string to a sockaddr structure.
+ *
+ * Universal addresses can be in the following formats:
+ *
+ * d = decimal (IPv4)
+ * x = hexadecimal (IPv6)
+ * p = port (decimal)
+ *
+ * d.d.d.d
+ * d.d.d.d.p.p
+ * x:x:x:x:x:x:x:x
+ * x:x:x:x:x:x:x:x.p.p
+ * x:x:x:x:x:x:d.d.d.d
+ * x:x:x:x:x:x:d.d.d.d.p.p
+ *
+ * IPv6 strings can also have a series of zeroes elided
+ * IPv6 strings can also have a %scope suffix at the end (after any port)
+ *
+ * rules & exceptions:
+ * - value before : is hex
+ * - value before . is dec
+ * - once . hit, all values are dec
+ * - hex+port case means value before first dot is actually hex
+ * - . is always preceded by digits except if last hex was double-colon
+ *
+ * scan, converting #s to bytes
+ * first time a . is encountered, scan the rest to count them.
+ * 2 dots = just port
+ * 3 dots = just IPv4 no port
+ * 5 dots = IPv4 and port
*/
-static void
-nfsrv_free_addrlist(struct nfs_export *nx)
-{
- int i;
- struct radix_node_head *rnh;
- struct nfsrv_free_netopt_arg fna;
- for (i = 0; i <= AF_MAX; i++)
- if ( (rnh = nx->nx_rtable[i]) ) {
- fna.rnh = rnh;
- fna.cnt = &nx->nx_expcnt;
- (*rnh->rnh_walktree)(rnh, nfsrv_free_netopt, (caddr_t)&fna);
- _FREE((caddr_t)rnh, M_RTABLE);
- nx->nx_rtable[i] = 0;
- }
-}
+#define IS_DIGIT(C) \
+ (((C) >= '0') && ((C) <= '9'))
-void enablequotas(struct mount *mp, vfs_context_t ctx); // XXX
+#define IS_XDIGIT(C) \
+ (IS_DIGIT(C) || \
+ (((C) >= 'A') && ((C) <= 'F')) || \
+ (((C) >= 'a') && ((C) <= 'f')))
int
-nfsrv_export(struct user_nfs_export_args *unxa, struct vfs_context *ctx)
+nfs_uaddr2sockaddr(const char *uaddr, struct sockaddr *addr)
{
- int error = 0, pathlen;
- struct nfs_exportfs *nxfs, *nxfs2, *nxfs3;
- struct nfs_export *nx, *nx2, *nx3;
- struct nfs_filehandle nfh;
- struct nameidata mnd, xnd;
- vnode_t mvp = NULL, xvp = NULL;
- mount_t mp;
- char path[MAXPATHLEN];
- int expisroot;
+ const char *p, *pd; /* pointers to current character in scan */
+ const char *pnum; /* pointer to current number to decode */
+ const char *pscope; /* pointer to IPv6 scope ID */
+ uint8_t a[18]; /* octet array to store address bytes */
+ int i; /* index of next octet to decode */
+ int dci; /* index of octet to insert double-colon zeroes */
+ int dcount, xdcount; /* count of digits in current number */
+ int needmore; /* set when we know we need more input (e.g. after colon, period) */
+ int dots; /* # of dots */
+ int hex; /* contains hex values */
+ unsigned long val; /* decoded value */
+ int s; /* index used for sliding array to insert elided zeroes */
+
+#define HEXVALUE 0
+#define DECIMALVALUE 1
+#define GET(TYPE) \
+ do { \
+ if ((dcount <= 0) || (dcount > (((TYPE) == DECIMALVALUE) ? 3 : 4))) \
+ return (0); \
+ if (((TYPE) == DECIMALVALUE) && xdcount) \
+ return (0); \
+ val = strtoul(pnum, NULL, ((TYPE) == DECIMALVALUE) ? 10 : 16); \
+ if (((TYPE) == DECIMALVALUE) && (val >= 256)) \
+ return (0); \
+ /* check if there is room left in the array */ \
+ if (i > (int)(sizeof(a) - (((TYPE) == HEXVALUE) ? 2 : 1) - ((dci != -1) ? 2 : 0))) \
+ return (0); \
+ if ((TYPE) == HEXVALUE) \
+ a[i++] = ((val >> 8) & 0xff); \
+ a[i++] = (val & 0xff); \
+ } while (0)
+
+ hex = 0;
+ dots = 0;
+ dci = -1;
+ i = dcount = xdcount = 0;
+ pnum = p = uaddr;
+ pscope = NULL;
+ needmore = 1;
+ if ((*p == ':') && (*++p != ':')) /* if it starts with colon, gotta be a double */
+ return (0);
- if (unxa->nxa_flags & NXA_DELETE_ALL) {
- /* delete all exports on all file systems */
- lck_rw_lock_exclusive(&nfs_export_rwlock);
- while ((nxfs = LIST_FIRST(&nfs_exports))) {
- mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
- if (mp)
- mp->mnt_flag &= ~MNT_EXPORTED;
- /* delete all exports on this file system */
- while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
- LIST_REMOVE(nx, nx_next);
- LIST_REMOVE(nx, nx_hash);
- /* delete all netopts for this export */
- nfsrv_free_addrlist(nx);
- nx->nx_flags &= ~NX_DEFAULTEXPORT;
- if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
- kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ while (*p) {
+ if (IS_XDIGIT(*p)) {
+ dcount++;
+ if (!IS_DIGIT(*p))
+ xdcount++;
+ needmore = 0;
+ p++;
+ } else if (*p == '.') {
+ /* rest is decimal IPv4 dotted quad and/or port */
+ if (!dots) {
+ /* this is the first, so count them */
+ for (pd = p; *pd; pd++) {
+ if (*pd == '.') {
+ if (++dots > 5)
+ return (0);
+ } else if (hex && (*pd == '%')) {
+ break;
+ } else if ((*pd < '0') || (*pd > '9')) {
+ return (0);
+ }
}
- FREE(nx->nx_path, M_TEMP);
- FREE(nx, M_TEMP);
+ if ((dots != 2) && (dots != 3) && (dots != 5))
+ return (0);
+ if (hex && (dots == 2)) { /* hex+port */
+ if (!dcount && needmore)
+ return (0);
+ if (dcount) /* last hex may be elided zero */
+ GET(HEXVALUE);
+ } else {
+ GET(DECIMALVALUE);
+ }
+ } else {
+ GET(DECIMALVALUE);
}
- LIST_REMOVE(nxfs, nxfs_next);
- FREE(nxfs->nxfs_path, M_TEMP);
- FREE(nxfs, M_TEMP);
+ dcount = xdcount = 0;
+ needmore = 1;
+ pnum = ++p;
+ } else if (*p == ':') {
+ hex = 1;
+ if (dots)
+ return (0);
+ if (!dcount) { /* missing number, probably double colon */
+ if (dci >= 0) /* can only have one double colon */
+ return (0);
+ dci = i;
+ needmore = 0;
+ } else {
+ GET(HEXVALUE);
+ dcount = xdcount = 0;
+ needmore = 1;
+ }
+ pnum = ++p;
+ } else if (*p == '%') { /* scope ID delimiter */
+ if (!hex)
+ return (0);
+ p++;
+ pscope = p;
+ break;
+ } else { /* unexpected character */
+ return (0);
}
- lck_rw_done(&nfs_export_rwlock);
+ }
+ if (needmore && !dcount)
return (0);
+ if (dcount) /* decode trailing number */
+ GET(dots ? DECIMALVALUE : HEXVALUE);
+ if (dci >= 0) { /* got a double-colon at i, need to insert a range of zeroes */
+ /* if we got a port, slide to end of array */
+ /* otherwise, slide to end of address (non-port) values */
+ int end = ((dots == 2) || (dots == 5)) ? sizeof(a) : (sizeof(a) - 2);
+ if (i % 2) /* length of zero range must be multiple of 2 */
+ return (0);
+ if (i >= end) /* no room? */
+ return (0);
+ /* slide (i-dci) numbers up from index dci */
+ for (s=0; s < (i - dci); s++)
+ a[end-1-s] = a[i-1-s];
+ /* zero (end-i) numbers at index dci */
+ for (s=0; s < (end - i); s++)
+ a[dci+s] = 0;
+ i = end;
}
- error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, (size_t *)&pathlen);
- if (error)
- return (error);
+ /* copy out resulting socket address */
+ if (hex) {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)addr;
+ if ((((dots == 0) || (dots == 3)) && (i != (sizeof(a)-2))))
+ return (0);
+ if ((((dots == 2) || (dots == 5)) && (i != sizeof(a))))
+ return (0);
+ bzero(sin6, sizeof(struct sockaddr_in6));
+ sin6->sin6_len = sizeof(struct sockaddr_in6);
+ sin6->sin6_family = AF_INET6;
+ bcopy(a, &sin6->sin6_addr.s6_addr, sizeof(struct in6_addr));
+ if ((dots == 5) || (dots == 2))
+ sin6->sin6_port = htons((a[16] << 8) | a[17]);
+ if (pscope) {
+ for (p=pscope; IS_DIGIT(*p); p++)
+ ;
+ if (*p && !IS_DIGIT(*p)) { /* name */
+ ifnet_t interface = NULL;
+ if (ifnet_find_by_name(pscope, &interface) == 0)
+ sin6->sin6_scope_id = ifnet_index(interface);
+ if (interface)
+ ifnet_release(interface);
+ } else { /* decimal number */
+ sin6->sin6_scope_id = strtoul(pscope, NULL, 10);
+ }
+ /* XXX should we also embed scope id for linklocal? */
+ }
+ } else {
+ struct sockaddr_in *sin = (struct sockaddr_in*)addr;
+ if ((dots != 3) && (dots != 5))
+ return (0);
+ if ((dots == 3) && (i != 4))
+ return (0);
+ if ((dots == 5) && (i != 6))
+ return (0);
+ bzero(sin, sizeof(struct sockaddr_in));
+ sin->sin_len = sizeof(struct sockaddr_in);
+ sin->sin_family = AF_INET;
+ bcopy(a, &sin->sin_addr.s_addr, sizeof(struct in_addr));
+ if (dots == 5)
+ sin->sin_port = htons((a[4] << 8) | a[5]);
+ }
+ return (1);
+}
- lck_rw_lock_exclusive(&nfs_export_rwlock);
- // first check if we've already got an exportfs with the given ID
- LIST_FOREACH(nxfs, &nfs_exports, nxfs_next) {
- if (nxfs->nxfs_id == unxa->nxa_fsid)
- break;
- }
- if (nxfs) {
- /* verify exported FS path matches given path */
- if (strcmp(path, nxfs->nxfs_path)) {
- error = EEXIST;
- goto unlock_out;
- }
- mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
- /* find exported FS root vnode */
- NDINIT(&mnd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
- UIO_SYSSPACE, nxfs->nxfs_path, ctx);
- error = namei(&mnd);
- if (error)
- goto unlock_out;
- mvp = mnd.ni_vp;
- /* make sure it's (still) the root of a file system */
- if ((mvp->v_flag & VROOT) == 0) {
- error = EINVAL;
- goto out;
- }
- /* sanity check: this should be same mount */
- if (mp != vnode_mount(mvp)) {
- error = EINVAL;
- goto out;
- }
+/* NFS Client debugging support */
+uint32_t nfs_debug_ctl;
+
+#include <libkern/libkern.h>
+#include <stdarg.h>
+
+void
+nfs_printf(int facility, int level, const char *fmt, ...)
+{
+ va_list ap;
+
+ if ((uint32_t)level > NFS_DEBUG_LEVEL)
+ return;
+ if (NFS_DEBUG_FACILITY && !((uint32_t)facility & NFS_DEBUG_FACILITY))
+ return;
+
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+}
+
+/* Is a mount gone away? */
+int
+nfs_mount_gone(struct nfsmount *nmp)
+{
+ return (!nmp || vfs_isforce(nmp->nm_mountp) || (nmp->nm_state & (NFSSTA_FORCE | NFSSTA_DEAD)));
+}
+
+/*
+ * Return some of the more significant mount options
+ * as a string, e.g. "'ro,hard,intr,tcp,vers=3,sec=krb5,deadtimeout=0'
+ */
+int
+nfs_mountopts(struct nfsmount *nmp, char *buf, int buflen)
+{
+ int c;
+
+ c = snprintf(buf, buflen, "%s,%s,%s,%s,vers=%d,sec=%s,%sdeadtimeout=%d",
+ (vfs_flags(nmp->nm_mountp) & MNT_RDONLY) ? "ro" : "rw",
+ NMFLAG(nmp, SOFT) ? "soft" : "hard",
+ NMFLAG(nmp, INTR) ? "intr" : "nointr",
+ nmp->nm_sotype == SOCK_STREAM ? "tcp" : "udp",
+ nmp->nm_vers,
+ nmp->nm_auth == RPCAUTH_KRB5 ? "krb5" :
+ nmp->nm_auth == RPCAUTH_KRB5I ? "krb5i" :
+ nmp->nm_auth == RPCAUTH_KRB5P ? "krb5p" :
+ nmp->nm_auth == RPCAUTH_SYS ? "sys" : "none",
+ nmp->nm_lockmode == NFS_LOCK_MODE_ENABLED ? "locks," :
+ nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED ? "nolocks," :
+ nmp->nm_lockmode == NFS_LOCK_MODE_LOCAL ? "locallocks," : "",
+ nmp->nm_deadtimeout);
+
+ return (c > buflen ? ENOMEM : 0);
+}
+
+#endif /* NFSCLIENT */
+
+/*
+ * Schedule a callout thread to run an NFS timer function
+ * interval milliseconds in the future.
+ */
+void
+nfs_interval_timer_start(thread_call_t call, int interval)
+{
+ uint64_t deadline;
+
+ clock_interval_to_deadline(interval, 1000 * 1000, &deadline);
+ thread_call_enter_delayed(call, deadline);
+}
+
+
+#if NFSSERVER
+
+int nfsrv_cmp_secflavs(struct nfs_sec *, struct nfs_sec *);
+int nfsrv_hang_addrlist(struct nfs_export *, struct user_nfs_export_args *);
+int nfsrv_free_netopt(struct radix_node *, void *);
+int nfsrv_free_addrlist(struct nfs_export *, struct user_nfs_export_args *);
+struct nfs_export_options *nfsrv_export_lookup(struct nfs_export *, mbuf_t);
+struct nfs_export *nfsrv_fhtoexport(struct nfs_filehandle *);
+struct nfs_user_stat_node *nfsrv_get_user_stat_node(struct nfs_active_user_list *, struct sockaddr *, uid_t);
+void nfsrv_init_user_list(struct nfs_active_user_list *);
+void nfsrv_free_user_list(struct nfs_active_user_list *);
+
+/*
+ * add NFSv3 WCC data to an mbuf chain
+ */
+int
+nfsm_chain_add_wcc_data_f(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ int preattrerr,
+ struct vnode_attr *prevap,
+ int postattrerr,
+ struct vnode_attr *postvap)
+{
+ int error = 0;
+
+ if (preattrerr) {
+ nfsm_chain_add_32(error, nmc, FALSE);
} else {
- /* no current exported file system with that ID */
- if (!(unxa->nxa_flags & NXA_ADD)) {
- error = ENOENT;
- goto unlock_out;
- }
+ nfsm_chain_add_32(error, nmc, TRUE);
+ nfsm_chain_add_64(error, nmc, prevap->va_data_size);
+ nfsm_chain_add_time(error, nmc, NFS_VER3, &prevap->va_modify_time);
+ nfsm_chain_add_time(error, nmc, NFS_VER3, &prevap->va_change_time);
+ }
+ nfsm_chain_add_postop_attr(error, nd, nmc, postattrerr, postvap);
- /* find exported FS root vnode */
- NDINIT(&mnd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
- UIO_SYSSPACE, path, ctx);
- error = namei(&mnd);
- if (error)
- goto unlock_out;
- mvp = mnd.ni_vp;
- /* make sure it's the root of a file system */
- if ((mvp->v_flag & VROOT) == 0) {
- error = EINVAL;
- goto out;
- }
- mp = vnode_mount(mvp);
+ return (error);
+}
- /* make sure the file system is NFS-exportable */
- nfh.nfh_len = NFS_MAX_FID_SIZE;
- error = VFS_VPTOFH(mvp, &nfh.nfh_len, &nfh.nfh_fid[0], NULL);
- if (!error && (nfh.nfh_len > (int)NFS_MAX_FID_SIZE))
- error = EIO;
- if (error)
- goto out;
+/*
+ * Extract a lookup path from the given mbufs and store it in
+ * a newly allocated buffer saved in the given nameidata structure.
+ */
+int
+nfsm_chain_get_path_namei(
+ struct nfsm_chain *nmc,
+ uint32_t len,
+ struct nameidata *nip)
+{
+ struct componentname *cnp = &nip->ni_cnd;
+ int error = 0;
+ char *cp;
- /* add an exportfs for it */
- MALLOC(nxfs, struct nfs_exportfs *, sizeof(struct nfs_exportfs), M_TEMP, M_WAITOK);
- if (!nxfs) {
- error = ENOMEM;
- goto out;
- }
- bzero(nxfs, sizeof(struct nfs_exportfs));
- nxfs->nxfs_id = unxa->nxa_fsid;
- MALLOC(nxfs->nxfs_path, char*, pathlen, M_TEMP, M_WAITOK);
- if (!nxfs->nxfs_path) {
- FREE(nxfs, M_TEMP);
- error = ENOMEM;
- goto out;
- }
- bcopy(path, nxfs->nxfs_path, pathlen);
- /* insert into list in reverse-sorted order */
- nxfs3 = NULL;
- LIST_FOREACH(nxfs2, &nfs_exports, nxfs_next) {
- if (strcmp(nxfs->nxfs_path, nxfs2->nxfs_path) > 0)
- break;
- nxfs3 = nxfs2;
- }
- if (nxfs2)
- LIST_INSERT_BEFORE(nxfs2, nxfs, nxfs_next);
- else if (nxfs3)
- LIST_INSERT_AFTER(nxfs3, nxfs, nxfs_next);
- else
- LIST_INSERT_HEAD(&nfs_exports, nxfs, nxfs_next);
+ if (len > (MAXPATHLEN - 1))
+ return (ENAMETOOLONG);
- /* make sure any quotas are enabled before we export the file system */
- enablequotas(mp, ctx);
+ /*
+ * Get a buffer for the name to be translated, and copy the
+ * name into the buffer.
+ */
+ MALLOC_ZONE(cnp->cn_pnbuf, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK);
+ if (!cnp->cn_pnbuf)
+ return (ENOMEM);
+ cnp->cn_pnlen = MAXPATHLEN;
+ cnp->cn_flags |= HASBUF;
+
+ /* Copy the name from the mbuf list to the string */
+ cp = cnp->cn_pnbuf;
+ nfsm_chain_get_opaque(error, nmc, len, cp);
+ if (error)
+ goto out;
+ cnp->cn_pnbuf[len] = '\0';
+
+ /* sanity check the string */
+ if ((strlen(cp) != len) || strchr(cp, '/'))
+ error = EACCES;
+out:
+ if (error) {
+ if (cnp->cn_pnbuf)
+ FREE_ZONE(cnp->cn_pnbuf, MAXPATHLEN, M_NAMEI);
+ cnp->cn_flags &= ~HASBUF;
+ } else {
+ nip->ni_pathlen = len;
}
+ return (error);
+}
- if (unxa->nxa_exppath) {
- error = copyinstr(unxa->nxa_exppath, path, MAXPATHLEN, (size_t *)&pathlen);
- if (error)
- goto out;
- LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
- if (nx->nx_id == unxa->nxa_expid)
- break;
- }
- if (nx) {
- /* verify exported FS path matches given path */
- if (strcmp(path, nx->nx_path)) {
- error = EEXIST;
- goto out;
- }
- } else {
+/*
+ * Set up nameidata for a lookup() call and do it.
+ */
+int
+nfsrv_namei(
+ struct nfsrv_descript *nd,
+ vfs_context_t ctx,
+ struct nameidata *nip,
+ struct nfs_filehandle *nfhp,
+ vnode_t *retdirp,
+ struct nfs_export **nxp,
+ struct nfs_export_options **nxop)
+{
+ vnode_t dp;
+ int error;
+ struct componentname *cnp = &nip->ni_cnd;
+ uint32_t cnflags;
+ char *tmppn;
+
+ *retdirp = NULL;
+
+ /*
+ * Extract and set starting directory.
+ */
+ error = nfsrv_fhtovp(nfhp, nd, &dp, nxp, nxop);
+ if (error)
+ goto out;
+ error = nfsrv_credcheck(nd, ctx, *nxp, *nxop);
+ if (error || (vnode_vtype(dp) != VDIR)) {
+ vnode_put(dp);
+ error = ENOTDIR;
+ goto out;
+ }
+ *retdirp = dp;
+
+ nip->ni_cnd.cn_context = ctx;
+
+ if (*nxop && ((*nxop)->nxo_flags & NX_READONLY))
+ cnp->cn_flags |= RDONLY;
+
+ cnp->cn_flags |= NOCROSSMOUNT;
+ cnp->cn_nameptr = cnp->cn_pnbuf;
+ nip->ni_usedvp = nip->ni_startdir = dp;
+
+ /*
+ * And call lookup() to do the real work
+ */
+ cnflags = nip->ni_cnd.cn_flags; /* store in case we have to restore */
+ while ((error = lookup(nip)) == ERECYCLE) {
+ nip->ni_cnd.cn_flags = cnflags;
+ cnp->cn_nameptr = cnp->cn_pnbuf;
+ nip->ni_usedvp = nip->ni_dvp = nip->ni_startdir = dp;
+ }
+ if (error)
+ goto out;
+
+ /* Check for encountering a symbolic link */
+ if (cnp->cn_flags & ISSYMLINK) {
+ if (cnp->cn_flags & (LOCKPARENT | WANTPARENT))
+ vnode_put(nip->ni_dvp);
+ if (nip->ni_vp) {
+ vnode_put(nip->ni_vp);
+ nip->ni_vp = NULL;
+ }
+ error = EINVAL;
+ }
+out:
+ if (error) {
+ tmppn = cnp->cn_pnbuf;
+ cnp->cn_pnbuf = NULL;
+ cnp->cn_flags &= ~HASBUF;
+ FREE_ZONE(tmppn, cnp->cn_pnlen, M_NAMEI);
+ }
+ return (error);
+}
+
+/*
+ * A fiddled version of m_adj() that ensures null fill to a 4-byte
+ * boundary and only trims off the back end
+ */
+void
+nfsm_adj(mbuf_t mp, int len, int nul)
+{
+ mbuf_t m, mnext;
+ int count, i, mlen;
+ char *cp;
+
+ /*
+ * Trim from tail. Scan the mbuf chain,
+ * calculating its length and finding the last mbuf.
+ * If the adjustment only affects this mbuf, then just
+ * adjust and return. Otherwise, rescan and truncate
+ * after the remaining size.
+ */
+ count = 0;
+ m = mp;
+ for (;;) {
+ mlen = mbuf_len(m);
+ count += mlen;
+ mnext = mbuf_next(m);
+ if (mnext == NULL)
+ break;
+ m = mnext;
+ }
+ if (mlen > len) {
+ mlen -= len;
+ mbuf_setlen(m, mlen);
+ if (nul > 0) {
+ cp = (caddr_t)mbuf_data(m) + mlen - nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ return;
+ }
+ count -= len;
+ if (count < 0)
+ count = 0;
+ /*
+ * Correct length for chain is "count".
+ * Find the mbuf with last data, adjust its length,
+ * and toss data from remaining mbufs on chain.
+ */
+ for (m = mp; m; m = mbuf_next(m)) {
+ mlen = mbuf_len(m);
+ if (mlen >= count) {
+ mlen = count;
+ mbuf_setlen(m, count);
+ if (nul > 0) {
+ cp = (caddr_t)mbuf_data(m) + mlen - nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ break;
+ }
+ count -= mlen;
+ }
+ for (m = mbuf_next(m); m; m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+}
+
+/*
+ * Trim the header out of the mbuf list and trim off any trailing
+ * junk so that the mbuf list has only the write data.
+ */
+int
+nfsm_chain_trim_data(struct nfsm_chain *nmc, int len, int *mlen)
+{
+ int cnt = 0, dlen, adjust;
+ caddr_t data;
+ mbuf_t m;
+
+ if (mlen)
+ *mlen = 0;
+
+ /* trim header */
+ for (m = nmc->nmc_mhead; m && (m != nmc->nmc_mcur); m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+ if (!m)
+ return (EIO);
+
+ /* trim current mbuf */
+ data = mbuf_data(m);
+ dlen = mbuf_len(m);
+ adjust = nmc->nmc_ptr - data;
+ dlen -= adjust;
+ if ((dlen > 0) && (adjust > 0)) {
+ if (mbuf_setdata(m, nmc->nmc_ptr, dlen))
+ return(EIO);
+ } else
+ mbuf_setlen(m, dlen);
+
+ /* skip next len bytes */
+ for (; m && (cnt < len); m = mbuf_next(m)) {
+ dlen = mbuf_len(m);
+ cnt += dlen;
+ if (cnt > len) {
+ /* truncate to end of data */
+ mbuf_setlen(m, dlen - (cnt - len));
+ if (m == nmc->nmc_mcur)
+ nmc->nmc_left -= (cnt - len);
+ cnt = len;
+ }
+ }
+ if (mlen)
+ *mlen = cnt;
+
+ /* trim any trailing data */
+ if (m == nmc->nmc_mcur)
+ nmc->nmc_left = 0;
+ for (; m; m = mbuf_next(m))
+ mbuf_setlen(m, 0);
+
+ return (0);
+}
+
+int
+nfsm_chain_add_fattr(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ struct vnode_attr *vap)
+{
+ int error = 0;
+
+ // XXX Should we assert here that all fields are supported?
+
+ nfsm_chain_add_32(error, nmc, vtonfs_type(vap->va_type, nd->nd_vers));
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_32(error, nmc, vap->va_mode & 07777);
+ } else {
+ nfsm_chain_add_32(error, nmc, vtonfsv2_mode(vap->va_type, vap->va_mode));
+ }
+ nfsm_chain_add_32(error, nmc, vap->va_nlink);
+ nfsm_chain_add_32(error, nmc, vap->va_uid);
+ nfsm_chain_add_32(error, nmc, vap->va_gid);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_64(error, nmc, vap->va_data_size);
+ nfsm_chain_add_64(error, nmc, vap->va_data_alloc);
+ nfsm_chain_add_32(error, nmc, major(vap->va_rdev));
+ nfsm_chain_add_32(error, nmc, minor(vap->va_rdev));
+ nfsm_chain_add_64(error, nmc, vap->va_fsid);
+ nfsm_chain_add_64(error, nmc, vap->va_fileid);
+ } else {
+ nfsm_chain_add_32(error, nmc, vap->va_data_size);
+ nfsm_chain_add_32(error, nmc, NFS_FABLKSIZE);
+ if (vap->va_type == VFIFO)
+ nfsm_chain_add_32(error, nmc, 0xffffffff);
+ else
+ nfsm_chain_add_32(error, nmc, vap->va_rdev);
+ nfsm_chain_add_32(error, nmc, vap->va_data_alloc / NFS_FABLKSIZE);
+ nfsm_chain_add_32(error, nmc, vap->va_fsid);
+ nfsm_chain_add_32(error, nmc, vap->va_fileid);
+ }
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_access_time);
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_modify_time);
+ nfsm_chain_add_time(error, nmc, nd->nd_vers, &vap->va_change_time);
+
+ return (error);
+}
+
+int
+nfsm_chain_get_sattr(
+ struct nfsrv_descript *nd,
+ struct nfsm_chain *nmc,
+ struct vnode_attr *vap)
+{
+ int error = 0;
+ uint32_t val = 0;
+ uint64_t val64 = 0;
+ struct timespec now;
+
+ if (nd->nd_vers == NFS_VER2) {
+ /*
+ * There is/was a bug in the Sun client that puts 0xffff in the mode
+ * field of sattr when it should put in 0xffffffff. The u_short
+ * doesn't sign extend. So check the low order 2 bytes for 0xffff.
+ */
+ nfsm_chain_get_32(error, nmc, val);
+ if ((val & 0xffff) != 0xffff) {
+ VATTR_SET(vap, va_mode, val & 07777);
+ /* save the "type" bits for NFSv2 create */
+ VATTR_SET(vap, va_type, IFTOVT(val));
+ VATTR_CLEAR_ACTIVE(vap, va_type);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val != (uint32_t)-1)
+ VATTR_SET(vap, va_uid, val);
+ nfsm_chain_get_32(error, nmc, val);
+ if (val != (uint32_t)-1)
+ VATTR_SET(vap, va_gid, val);
+ /* save the "size" bits for NFSv2 create (even if they appear unset) */
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_data_size, val);
+ if (val == (uint32_t)-1)
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ nfsm_chain_get_time(error, nmc, NFS_VER2,
+ vap->va_access_time.tv_sec,
+ vap->va_access_time.tv_nsec);
+ if (vap->va_access_time.tv_sec != -1)
+ VATTR_SET_ACTIVE(vap, va_access_time);
+ nfsm_chain_get_time(error, nmc, NFS_VER2,
+ vap->va_modify_time.tv_sec,
+ vap->va_modify_time.tv_nsec);
+ if (vap->va_modify_time.tv_sec != -1)
+ VATTR_SET_ACTIVE(vap, va_modify_time);
+ return (error);
+ }
+
+ /* NFSv3 */
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_mode, val & 07777);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_uid, val);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_32(error, nmc, val);
+ VATTR_SET(vap, va_gid, val);
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ if (val) {
+ nfsm_chain_get_64(error, nmc, val64);
+ VATTR_SET(vap, va_data_size, val64);
+ }
+ nanotime(&now);
+ nfsm_chain_get_32(error, nmc, val);
+ switch (val) {
+ case NFS_TIME_SET_TO_CLIENT:
+ nfsm_chain_get_time(error, nmc, nd->nd_vers,
+ vap->va_access_time.tv_sec,
+ vap->va_access_time.tv_nsec);
+ VATTR_SET_ACTIVE(vap, va_access_time);
+ vap->va_vaflags &= ~VA_UTIMES_NULL;
+ break;
+ case NFS_TIME_SET_TO_SERVER:
+ VATTR_SET(vap, va_access_time, now);
+ vap->va_vaflags |= VA_UTIMES_NULL;
+ break;
+ }
+ nfsm_chain_get_32(error, nmc, val);
+ switch (val) {
+ case NFS_TIME_SET_TO_CLIENT:
+ nfsm_chain_get_time(error, nmc, nd->nd_vers,
+ vap->va_modify_time.tv_sec,
+ vap->va_modify_time.tv_nsec);
+ VATTR_SET_ACTIVE(vap, va_modify_time);
+ vap->va_vaflags &= ~VA_UTIMES_NULL;
+ break;
+ case NFS_TIME_SET_TO_SERVER:
+ VATTR_SET(vap, va_modify_time, now);
+ if (!VATTR_IS_ACTIVE(vap, va_access_time))
+ vap->va_vaflags |= VA_UTIMES_NULL;
+ break;
+ }
+
+ return (error);
+}
+
+/*
+ * Compare two security flavor structs
+ */
+int
+nfsrv_cmp_secflavs(struct nfs_sec *sf1, struct nfs_sec *sf2)
+{
+ int i;
+
+ if (sf1->count != sf2->count)
+ return 1;
+ for (i = 0; i < sf1->count; i++)
+ if (sf1->flavors[i] != sf2->flavors[i])
+ return 1;
+ return 0;
+}
+
+/*
+ * Build hash lists of net addresses and hang them off the NFS export.
+ * Called by nfsrv_export() to set up the lists of export addresses.
+ */
+int
+nfsrv_hang_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
+{
+ struct nfs_export_net_args nxna;
+ struct nfs_netopt *no, *rn_no;
+ struct radix_node_head *rnh;
+ struct radix_node *rn;
+ struct sockaddr *saddr, *smask;
+ struct domain *dom;
+ int i, error;
+ unsigned int net;
+ user_addr_t uaddr;
+ kauth_cred_t cred;
+
+ uaddr = unxa->nxa_nets;
+ for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
+ error = copyin(uaddr, &nxna, sizeof(nxna));
+ if (error)
+ return (error);
+
+ if (nxna.nxna_flags & (NX_MAPROOT|NX_MAPALL)) {
+ struct posix_cred temp_pcred;
+ bzero(&temp_pcred, sizeof(temp_pcred));
+ temp_pcred.cr_uid = nxna.nxna_cred.cr_uid;
+ temp_pcred.cr_ngroups = nxna.nxna_cred.cr_ngroups;
+ for (i=0; i < nxna.nxna_cred.cr_ngroups && i < NGROUPS; i++)
+ temp_pcred.cr_groups[i] = nxna.nxna_cred.cr_groups[i];
+ cred = posix_cred_create(&temp_pcred);
+ if (!IS_VALID_CRED(cred))
+ return (ENOMEM);
+ } else {
+ cred = NOCRED;
+ }
+
+ if (nxna.nxna_addr.ss_len == 0) {
+ /* No address means this is a default/world export */
+ if (nx->nx_flags & NX_DEFAULTEXPORT) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ return (EEXIST);
+ }
+ nx->nx_flags |= NX_DEFAULTEXPORT;
+ nx->nx_defopt.nxo_flags = nxna.nxna_flags;
+ nx->nx_defopt.nxo_cred = cred;
+ bcopy(&nxna.nxna_sec, &nx->nx_defopt.nxo_sec, sizeof(struct nfs_sec));
+ nx->nx_expcnt++;
+ continue;
+ }
+
+ i = sizeof(struct nfs_netopt);
+ i += nxna.nxna_addr.ss_len + nxna.nxna_mask.ss_len;
+ MALLOC(no, struct nfs_netopt *, i, M_NETADDR, M_WAITOK);
+ if (!no) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ return (ENOMEM);
+ }
+ bzero(no, sizeof(struct nfs_netopt));
+ no->no_opt.nxo_flags = nxna.nxna_flags;
+ no->no_opt.nxo_cred = cred;
+ bcopy(&nxna.nxna_sec, &no->no_opt.nxo_sec, sizeof(struct nfs_sec));
+
+ saddr = (struct sockaddr *)(no + 1);
+ bcopy(&nxna.nxna_addr, saddr, nxna.nxna_addr.ss_len);
+ if (nxna.nxna_mask.ss_len) {
+ smask = (struct sockaddr *)((caddr_t)saddr + nxna.nxna_addr.ss_len);
+ bcopy(&nxna.nxna_mask, smask, nxna.nxna_mask.ss_len);
+ } else {
+ smask = NULL;
+ }
+ i = saddr->sa_family;
+ if ((rnh = nx->nx_rtable[i]) == 0) {
+ /*
+ * Seems silly to initialize every AF when most are not
+ * used, do so on demand here
+ */
+ TAILQ_FOREACH(dom, &domains, dom_entry) {
+ if (dom->dom_family == i && dom->dom_rtattach) {
+ dom->dom_rtattach((void **)&nx->nx_rtable[i],
+ dom->dom_rtoffset);
+ break;
+ }
+ }
+ if ((rnh = nx->nx_rtable[i]) == 0) {
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ _FREE(no, M_NETADDR);
+ return (ENOBUFS);
+ }
+ }
+ rn = (*rnh->rnh_addaddr)((caddr_t)saddr, (caddr_t)smask, rnh, no->no_rnodes);
+ if (rn == 0) {
+ /*
+ * One of the reasons that rnh_addaddr may fail is that
+ * the entry already exists. To check for this case, we
+ * look up the entry to see if it is there. If so, we
+ * do not need to make a new entry but do continue.
+ *
+ * XXX should this be rnh_lookup() instead?
+ */
+ int matched = 0;
+ rn = (*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
+ rn_no = (struct nfs_netopt *)rn;
+ if (rn != 0 && (rn->rn_flags & RNF_ROOT) == 0 &&
+ (rn_no->no_opt.nxo_flags == nxna.nxna_flags) &&
+ (!nfsrv_cmp_secflavs(&rn_no->no_opt.nxo_sec, &nxna.nxna_sec))) {
+ kauth_cred_t cred2 = rn_no->no_opt.nxo_cred;
+ if (cred == cred2) {
+ /* creds are same (or both NULL) */
+ matched = 1;
+ } else if (cred && cred2 && (kauth_cred_getuid(cred) == kauth_cred_getuid(cred2))) {
+ /*
+ * Now compare the effective and
+ * supplementary groups...
+ *
+ * Note: This comparison, as written,
+ * does not correctly indicate that
+ * the groups are equivalent, since
+ * other than the first supplementary
+ * group, which is also the effective
+ * group, order on the remaining groups
+ * doesn't matter, and this is an
+ * ordered compare.
+ */
+ gid_t groups[NGROUPS];
+ gid_t groups2[NGROUPS];
+ int groupcount = NGROUPS;
+ int group2count = NGROUPS;
+
+ if (!kauth_cred_getgroups(cred, groups, &groupcount) &&
+ !kauth_cred_getgroups(cred2, groups2, &group2count) &&
+ groupcount == group2count) {
+ for (i=0; i < group2count; i++)
+ if (groups[i] != groups2[i])
+ break;
+ if (i >= group2count || i >= NGROUPS)
+ matched = 1;
+ }
+ }
+ }
+ if (IS_VALID_CRED(cred))
+ kauth_cred_unref(&cred);
+ _FREE(no, M_NETADDR);
+ if (matched)
+ continue;
+ return (EPERM);
+ }
+ nx->nx_expcnt++;
+ }
+
+ return (0);
+}
+
+/*
+ * In order to properly track an export's netopt count, we need to pass
+ * an additional argument to nfsrv_free_netopt() so that it can decrement
+ * the export's netopt count.
+ */
+struct nfsrv_free_netopt_arg {
+ uint32_t *cnt;
+ struct radix_node_head *rnh;
+};
+
+int
+nfsrv_free_netopt(struct radix_node *rn, void *w)
+{
+ struct nfsrv_free_netopt_arg *fna = (struct nfsrv_free_netopt_arg *)w;
+ struct radix_node_head *rnh = fna->rnh;
+ uint32_t *cnt = fna->cnt;
+ struct nfs_netopt *nno = (struct nfs_netopt *)rn;
+
+ (*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
+ if (IS_VALID_CRED(nno->no_opt.nxo_cred))
+ kauth_cred_unref(&nno->no_opt.nxo_cred);
+ _FREE((caddr_t)rn, M_NETADDR);
+ *cnt -= 1;
+ return (0);
+}
+
+/*
+ * Free the net address hash lists that are hanging off the mount points.
+ */
+int
+nfsrv_free_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
+{
+ struct nfs_export_net_args nxna;
+ struct radix_node_head *rnh;
+ struct radix_node *rn;
+ struct nfsrv_free_netopt_arg fna;
+ struct nfs_netopt *nno;
+ user_addr_t uaddr;
+ unsigned int net;
+ int i, error;
+
+ if (!unxa || !unxa->nxa_netcount) {
+ /* delete everything */
+ for (i = 0; i <= AF_MAX; i++)
+ if ( (rnh = nx->nx_rtable[i]) ) {
+ fna.rnh = rnh;
+ fna.cnt = &nx->nx_expcnt;
+ (*rnh->rnh_walktree)(rnh, nfsrv_free_netopt, (caddr_t)&fna);
+ _FREE((caddr_t)rnh, M_RTABLE);
+ nx->nx_rtable[i] = 0;
+ }
+ return (0);
+ }
+
+ /* delete only the exports specified */
+ uaddr = unxa->nxa_nets;
+ for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
+ error = copyin(uaddr, &nxna, sizeof(nxna));
+ if (error)
+ return (error);
+
+ if (nxna.nxna_addr.ss_len == 0) {
+ /* No address means this is a default/world export */
+ if (nx->nx_flags & NX_DEFAULTEXPORT) {
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ nx->nx_expcnt--;
+ }
+ continue;
+ }
+
+ if ((rnh = nx->nx_rtable[nxna.nxna_addr.ss_family]) == 0) {
+ /* AF not initialized? */
+ if (!(unxa->nxa_flags & NXA_ADD))
+ printf("nfsrv_free_addrlist: address not found (0)\n");
+ continue;
+ }
+
+ rn = (*rnh->rnh_lookup)(&nxna.nxna_addr,
+ nxna.nxna_mask.ss_len ? &nxna.nxna_mask : NULL, rnh);
+ if (!rn || (rn->rn_flags & RNF_ROOT)) {
+ if (!(unxa->nxa_flags & NXA_ADD))
+ printf("nfsrv_free_addrlist: address not found (1)\n");
+ continue;
+ }
+
+ (*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
+ nno = (struct nfs_netopt *)rn;
+ if (IS_VALID_CRED(nno->no_opt.nxo_cred))
+ kauth_cred_unref(&nno->no_opt.nxo_cred);
+ _FREE((caddr_t)rn, M_NETADDR);
+
+ nx->nx_expcnt--;
+ if (nx->nx_expcnt == ((nx->nx_flags & NX_DEFAULTEXPORT) ? 1 : 0)) {
+ /* no more entries in rnh, so free it up */
+ _FREE((caddr_t)rnh, M_RTABLE);
+ nx->nx_rtable[nxna.nxna_addr.ss_family] = 0;
+ }
+ }
+
+ return (0);
+}
+
+void enablequotas(struct mount *mp, vfs_context_t ctx); // XXX
+
+int
+nfsrv_export(struct user_nfs_export_args *unxa, vfs_context_t ctx)
+{
+ int error = 0;
+ size_t pathlen;
+ struct nfs_exportfs *nxfs, *nxfs2, *nxfs3;
+ struct nfs_export *nx, *nx2, *nx3;
+ struct nfs_filehandle nfh;
+ struct nameidata mnd, xnd;
+ vnode_t mvp = NULL, xvp = NULL;
+ mount_t mp = NULL;
+ char path[MAXPATHLEN];
+ int expisroot;
+
+ if (unxa->nxa_flags == NXA_CHECK) {
+ /* just check if the path is an NFS-exportable file system */
+ error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ return (error);
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(path), ctx);
+ error = namei(&mnd);
+ if (error)
+ return (error);
+ mvp = mnd.ni_vp;
+ mp = vnode_mount(mvp);
+ /* make sure it's the root of a file system */
+ if (!vnode_isvroot(mvp))
+ error = EINVAL;
+ /* make sure the file system is NFS-exportable */
+ if (!error) {
+ nfh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(mvp, (int*)&nfh.nfh_len, &nfh.nfh_fid[0], NULL);
+ }
+ if (!error && (nfh.nfh_len > (int)NFSV3_MAX_FID_SIZE))
+ error = EIO;
+ if (!error && !(mp->mnt_vtable->vfc_vfsflags & VFC_VFSREADDIR_EXTENDED))
+ error = EISDIR;
+ vnode_put(mvp);
+ nameidone(&mnd);
+ return (error);
+ }
+
+ /* all other operations: must be super user */
+ if ((error = vfs_context_suser(ctx)))
+ return (error);
+
+ if (unxa->nxa_flags & NXA_DELETE_ALL) {
+ /* delete all exports on all file systems */
+ lck_rw_lock_exclusive(&nfsrv_export_rwlock);
+ while ((nxfs = LIST_FIRST(&nfsrv_exports))) {
+ mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
+ if (mp) {
+ vfs_clearflags(mp, MNT_EXPORTED);
+ mount_iterdrop(mp);
+ mp = NULL;
+ }
+ /* delete all exports on this file system */
+ while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
+ LIST_REMOVE(nx, nx_next);
+ LIST_REMOVE(nx, nx_hash);
+ /* delete all netopts for this export */
+ nfsrv_free_addrlist(nx, NULL);
+ nx->nx_flags &= ~NX_DEFAULTEXPORT;
+ if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
+ kauth_cred_unref(&nx->nx_defopt.nxo_cred);
+ }
+ /* free active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
+ FREE(nx->nx_path, M_TEMP);
+ FREE(nx, M_TEMP);
+ }
+ LIST_REMOVE(nxfs, nxfs_next);
+ FREE(nxfs->nxfs_path, M_TEMP);
+ FREE(nxfs, M_TEMP);
+ }
+ if (nfsrv_export_hashtbl) {
+ /* all exports deleted, clean up export hash table */
+ FREE(nfsrv_export_hashtbl, M_TEMP);
+ nfsrv_export_hashtbl = NULL;
+ }
+ lck_rw_done(&nfsrv_export_rwlock);
+ return (0);
+ }
+
+ error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ return (error);
+
+ lck_rw_lock_exclusive(&nfsrv_export_rwlock);
+
+ /* init export hash table if not already */
+ if (!nfsrv_export_hashtbl) {
+ if (nfsrv_export_hash_size <= 0)
+ nfsrv_export_hash_size = NFSRVEXPHASHSZ;
+ nfsrv_export_hashtbl = hashinit(nfsrv_export_hash_size, M_TEMP, &nfsrv_export_hash);
+ }
+
+ // first check if we've already got an exportfs with the given ID
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ if (nxfs->nxfs_id == unxa->nxa_fsid)
+ break;
+ }
+ if (nxfs) {
+ /* verify exported FS path matches given path */
+ if (strncmp(path, nxfs->nxfs_path, MAXPATHLEN)) {
+ error = EEXIST;
+ goto unlock_out;
+ }
+ if ((unxa->nxa_flags & (NXA_ADD|NXA_OFFLINE)) == NXA_ADD) {
+ /* if adding, verify that the mount is still what we expect */
+ mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
+ if (mp) {
+ mount_ref(mp, 0);
+ mount_iterdrop(mp);
+ }
+ /* find exported FS root vnode */
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(nxfs->nxfs_path), ctx);
+ error = namei(&mnd);
+ if (error)
+ goto unlock_out;
+ mvp = mnd.ni_vp;
+ /* make sure it's (still) the root of a file system */
+ if (!vnode_isvroot(mvp)) {
+ error = EINVAL;
+ goto out;
+ }
+ /* sanity check: this should be same mount */
+ if (mp != vnode_mount(mvp)) {
+ error = EINVAL;
+ goto out;
+ }
+ }
+ } else {
+ /* no current exported file system with that ID */
+ if (!(unxa->nxa_flags & NXA_ADD)) {
+ error = ENOENT;
+ goto unlock_out;
+ }
+
+ /* find exported FS root vnode */
+ NDINIT(&mnd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(path), ctx);
+ error = namei(&mnd);
+ if (error) {
+ if (!(unxa->nxa_flags & NXA_OFFLINE))
+ goto unlock_out;
+ } else {
+ mvp = mnd.ni_vp;
+ /* make sure it's the root of a file system */
+ if (!vnode_isvroot(mvp)) {
+ /* bail if not marked offline */
+ if (!(unxa->nxa_flags & NXA_OFFLINE)) {
+ error = EINVAL;
+ goto out;
+ }
+ vnode_put(mvp);
+ nameidone(&mnd);
+ mvp = NULL;
+ } else {
+ mp = vnode_mount(mvp);
+ mount_ref(mp, 0);
+
+ /* make sure the file system is NFS-exportable */
+ nfh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(mvp, (int*)&nfh.nfh_len, &nfh.nfh_fid[0], NULL);
+ if (!error && (nfh.nfh_len > (int)NFSV3_MAX_FID_SIZE))
+ error = EIO;
+ if (!error && !(mp->mnt_vtable->vfc_vfsflags & VFC_VFSREADDIR_EXTENDED))
+ error = EISDIR;
+ if (error)
+ goto out;
+ }
+ }
+
+ /* add an exportfs for it */
+ MALLOC(nxfs, struct nfs_exportfs *, sizeof(struct nfs_exportfs), M_TEMP, M_WAITOK);
+ if (!nxfs) {
+ error = ENOMEM;
+ goto out;
+ }
+ bzero(nxfs, sizeof(struct nfs_exportfs));
+ nxfs->nxfs_id = unxa->nxa_fsid;
+ MALLOC(nxfs->nxfs_path, char*, pathlen, M_TEMP, M_WAITOK);
+ if (!nxfs->nxfs_path) {
+ FREE(nxfs, M_TEMP);
+ error = ENOMEM;
+ goto out;
+ }
+ bcopy(path, nxfs->nxfs_path, pathlen);
+ /* insert into list in reverse-sorted order */
+ nxfs3 = NULL;
+ LIST_FOREACH(nxfs2, &nfsrv_exports, nxfs_next) {
+ if (strncmp(nxfs->nxfs_path, nxfs2->nxfs_path, MAXPATHLEN) > 0)
+ break;
+ nxfs3 = nxfs2;
+ }
+ if (nxfs2)
+ LIST_INSERT_BEFORE(nxfs2, nxfs, nxfs_next);
+ else if (nxfs3)
+ LIST_INSERT_AFTER(nxfs3, nxfs, nxfs_next);
+ else
+ LIST_INSERT_HEAD(&nfsrv_exports, nxfs, nxfs_next);
+
+ /* make sure any quotas are enabled before we export the file system */
+ if (mp)
+ enablequotas(mp, ctx);
+ }
+
+ if (unxa->nxa_exppath) {
+ error = copyinstr(unxa->nxa_exppath, path, MAXPATHLEN, &pathlen);
+ if (error)
+ goto out;
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ if (nx->nx_id == unxa->nxa_expid)
+ break;
+ }
+ if (nx) {
+ /* verify exported FS path matches given path */
+ if (strncmp(path, nx->nx_path, MAXPATHLEN)) {
+ error = EEXIST;
+ goto out;
+ }
+ } else {
/* no current export with that ID */
if (!(unxa->nxa_flags & NXA_ADD)) {
error = ENOENT;
bzero(nx, sizeof(struct nfs_export));
nx->nx_id = unxa->nxa_expid;
nx->nx_fs = nxfs;
+ microtime(&nx->nx_exptime);
MALLOC(nx->nx_path, char*, pathlen, M_TEMP, M_WAITOK);
if (!nx->nx_path) {
error = ENOMEM;
goto out1;
}
bcopy(path, nx->nx_path, pathlen);
+ /* initialize the active user list */
+ nfsrv_init_user_list(&nx->nx_user_list);
/* insert into list in reverse-sorted order */
nx3 = NULL;
LIST_FOREACH(nx2, &nxfs->nxfs_exports, nx_next) {
- if (strcmp(nx->nx_path, nx2->nx_path) > 0)
+ if (strncmp(nx->nx_path, nx2->nx_path, MAXPATHLEN) > 0)
break;
nx3 = nx2;
}
else
LIST_INSERT_HEAD(&nxfs->nxfs_exports, nx, nx_next);
/* insert into hash */
- LIST_INSERT_HEAD(NFSEXPHASH(nxfs->nxfs_id, nx->nx_id), nx, nx_hash);
+ LIST_INSERT_HEAD(NFSRVEXPHASH(nxfs->nxfs_id, nx->nx_id), nx, nx_hash);
/*
- * We don't allow nested exports. Check if the new entry
+ * We don't allow/support nested exports. Check if the new entry
* nests with the entries before and after or if there's an
* entry for the file system root and subdirs.
*/
error = EINVAL;
}
if (error) {
- printf("nfsrv_export: attempt to register nested exports: %s/%s\n",
+ /*
+ * Don't actually return an error because mountd is
+ * probably about to delete the conflicting export.
+ * This can happen when a new export momentarily conflicts
+ * with an old export while the transition is being made.
+ * Theoretically, mountd could be written to avoid this
+ * transient situation - but it would greatly increase the
+ * complexity of mountd for very little overall benefit.
+ */
+ printf("nfsrv_export: warning: nested exports: %s/%s\n",
nxfs->nxfs_path, nx->nx_path);
- goto out1;
- }
-
- /* find export root vnode */
- if (!nx->nx_path[0] || ((nx->nx_path[0] == '.') && !nx->nx_path[1])) {
- /* exporting file system's root directory */
- xvp = mvp;
- vnode_get(xvp);
- } else {
- xnd.ni_cnd.cn_nameiop = LOOKUP;
- xnd.ni_cnd.cn_flags = LOCKLEAF;
- xnd.ni_pathlen = pathlen - 1;
- xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf = path;
- xnd.ni_startdir = mvp;
- xnd.ni_usedvp = mvp;
- xnd.ni_cnd.cn_context = ctx;
- error = lookup(&xnd);
- if (error)
- goto out1;
- xvp = xnd.ni_vp;
- }
-
- if (vnode_vtype(xvp) != VDIR) {
- error = EINVAL;
- vnode_put(xvp);
- goto out1;
+ error = 0;
}
-
- /* grab file handle */
+ nx->nx_fh.nfh_xh.nxh_flags = NXHF_INVALIDFH;
+ }
+ /* make sure file handle is set up */
+ if ((nx->nx_fh.nfh_xh.nxh_version != htonl(NFS_FH_VERSION)) ||
+ (nx->nx_fh.nfh_xh.nxh_flags & NXHF_INVALIDFH)) {
+ /* try to set up export root file handle */
nx->nx_fh.nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
nx->nx_fh.nfh_xh.nxh_fsid = htonl(nx->nx_fs->nxfs_id);
nx->nx_fh.nfh_xh.nxh_expid = htonl(nx->nx_id);
nx->nx_fh.nfh_xh.nxh_flags = 0;
nx->nx_fh.nfh_xh.nxh_reserved = 0;
- nx->nx_fh.nfh_len = NFS_MAX_FID_SIZE;
- error = VFS_VPTOFH(xvp, &nx->nx_fh.nfh_len, &nx->nx_fh.nfh_fid[0], NULL);
- if (!error && (nx->nx_fh.nfh_len > (int)NFS_MAX_FID_SIZE)) {
- error = EIO;
+ nx->nx_fh.nfh_fhp = (u_char*)&nx->nx_fh.nfh_xh;
+ bzero(&nx->nx_fh.nfh_fid[0], NFSV2_MAX_FID_SIZE);
+ if (mvp) {
+ /* find export root vnode */
+ if (!nx->nx_path[0] || ((nx->nx_path[0] == '.') && !nx->nx_path[1])) {
+ /* exporting file system's root directory */
+ xvp = mvp;
+ vnode_get(xvp);
+ } else {
+ xnd.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ xnd.ni_op = OP_LOOKUP;
+#endif
+ xnd.ni_cnd.cn_flags = LOCKLEAF;
+ xnd.ni_pathlen = pathlen - 1;
+ xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf = path;
+ xnd.ni_startdir = mvp;
+ xnd.ni_usedvp = mvp;
+ xnd.ni_cnd.cn_context = ctx;
+ while ((error = lookup(&xnd)) == ERECYCLE) {
+ xnd.ni_cnd.cn_flags = LOCKLEAF;
+ xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf;
+ xnd.ni_usedvp = xnd.ni_dvp = xnd.ni_startdir = mvp;
+ }
+ if (error)
+ goto out1;
+ xvp = xnd.ni_vp;
+ }
+
+ if (vnode_vtype(xvp) != VDIR) {
+ error = EINVAL;
+ vnode_put(xvp);
+ goto out1;
+ }
+
+ /* grab file handle */
+ nx->nx_fh.nfh_len = NFSV3_MAX_FID_SIZE;
+ error = VFS_VPTOFH(xvp, (int*)&nx->nx_fh.nfh_len, &nx->nx_fh.nfh_fid[0], NULL);
+ if (!error && (nx->nx_fh.nfh_len > (int)NFSV3_MAX_FID_SIZE)) {
+ error = EIO;
+ } else {
+ nx->nx_fh.nfh_xh.nxh_fidlen = nx->nx_fh.nfh_len;
+ nx->nx_fh.nfh_len += sizeof(nx->nx_fh.nfh_xh);
+ }
+
+ vnode_put(xvp);
+ if (error)
+ goto out1;
} else {
- nx->nx_fh.nfh_xh.nxh_fidlen = nx->nx_fh.nfh_len;
- nx->nx_fh.nfh_len += sizeof(nx->nx_fh.nfh_xh);
+ nx->nx_fh.nfh_xh.nxh_flags = NXHF_INVALIDFH;
+ nx->nx_fh.nfh_xh.nxh_fidlen = 0;
+ nx->nx_fh.nfh_len = sizeof(nx->nx_fh.nfh_xh);
}
-
- vnode_put(xvp);
- if (error)
- goto out1;
}
} else {
nx = NULL;
LIST_REMOVE(nx, nx_next);
LIST_REMOVE(nx, nx_hash);
/* delete all netopts for this export */
- nfsrv_free_addrlist(nx);
+ nfsrv_free_addrlist(nx, NULL);
nx->nx_flags &= ~NX_DEFAULTEXPORT;
if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
kauth_cred_unref(&nx->nx_defopt.nxo_cred);
}
+ /* delete active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
FREE(nx->nx_path, M_TEMP);
FREE(nx, M_TEMP);
}
goto out1;
- } else {
+ } else if (!unxa->nxa_netcount) {
/* delete all netopts for this export */
- nfsrv_free_addrlist(nx);
+ nfsrv_free_addrlist(nx, NULL);
nx->nx_flags &= ~NX_DEFAULTEXPORT;
if (IS_VALID_CRED(nx->nx_defopt.nxo_cred)) {
kauth_cred_unref(&nx->nx_defopt.nxo_cred);
}
+ } else {
+ /* delete only the netopts for the given addresses */
+ error = nfsrv_free_addrlist(nx, unxa);
+ if (error)
+ goto out1;
}
}
if (unxa->nxa_flags & NXA_ADD) {
+ /*
+ * If going offline set the export time so that when
+ * coming back on line we will present a new write verifier
+ * to the client.
+ */
+ if (unxa->nxa_flags & NXA_OFFLINE)
+ microtime(&nx->nx_exptime);
+
error = nfsrv_hang_addrlist(nx, unxa);
- if (!error)
- mp->mnt_flag |= MNT_EXPORTED;
+ if (!error && mp)
+ vfs_setflags(mp, MNT_EXPORTED);
}
out1:
/* export has no export options */
LIST_REMOVE(nx, nx_next);
LIST_REMOVE(nx, nx_hash);
+ /* delete active user list for this export */
+ nfsrv_free_user_list(&nx->nx_user_list);
FREE(nx->nx_path, M_TEMP);
FREE(nx, M_TEMP);
}
LIST_REMOVE(nxfs, nxfs_next);
FREE(nxfs->nxfs_path, M_TEMP);
FREE(nxfs, M_TEMP);
- mp->mnt_flag &= ~MNT_EXPORTED;
+ if (mp)
+ vfs_clearflags(mp, MNT_EXPORTED);
}
out:
nameidone(&mnd);
}
unlock_out:
- lck_rw_done(&nfs_export_rwlock);
+ if (mp)
+ mount_drop(mp, 0);
+ lck_rw_done(&nfsrv_export_rwlock);
return (error);
}
-static struct nfs_export_options *
+struct nfs_export_options *
nfsrv_export_lookup(struct nfs_export *nx, mbuf_t nam)
{
struct nfs_export_options *nxo = NULL;
nxo = &no->no_opt;
}
}
- /* If no address match, use the default if it exists. */
- if ((nxo == NULL) && (nx->nx_flags & NX_DEFAULTEXPORT))
- nxo = &nx->nx_defopt;
- return (nxo);
+ /* If no address match, use the default if it exists. */
+ if ((nxo == NULL) && (nx->nx_flags & NX_DEFAULTEXPORT))
+ nxo = &nx->nx_defopt;
+ return (nxo);
+}
+
+/* find an export for the given handle */
+struct nfs_export *
+nfsrv_fhtoexport(struct nfs_filehandle *nfhp)
+{
+ struct nfs_exphandle *nxh = (struct nfs_exphandle*)nfhp->nfh_fhp;
+ struct nfs_export *nx;
+ uint32_t fsid, expid;
+
+ if (!nfsrv_export_hashtbl)
+ return (NULL);
+ fsid = ntohl(nxh->nxh_fsid);
+ expid = ntohl(nxh->nxh_expid);
+ nx = NFSRVEXPHASH(fsid, expid)->lh_first;
+ for (; nx; nx = LIST_NEXT(nx, nx_hash)) {
+ if (nx->nx_fs->nxfs_id != fsid)
+ continue;
+ if (nx->nx_id != expid)
+ continue;
+ break;
+ }
+ return (nx);
+}
+
+/*
+ * nfsrv_fhtovp() - convert FH to vnode and export info
+ */
+int
+nfsrv_fhtovp(
+ struct nfs_filehandle *nfhp,
+ struct nfsrv_descript *nd,
+ vnode_t *vpp,
+ struct nfs_export **nxp,
+ struct nfs_export_options **nxop)
+{
+ struct nfs_exphandle *nxh = (struct nfs_exphandle*)nfhp->nfh_fhp;
+ struct nfs_export_options *nxo;
+ u_char *fidp;
+ int error;
+ struct mount *mp;
+ mbuf_t nam = NULL;
+ uint32_t v;
+ int i, valid;
+
+ *vpp = NULL;
+ *nxp = NULL;
+ *nxop = NULL;
+
+ if (nd != NULL)
+ nam = nd->nd_nam;
+
+ v = ntohl(nxh->nxh_version);
+ if (v != NFS_FH_VERSION) {
+ /* file handle format not supported */
+ return (ESTALE);
+ }
+ if (nfhp->nfh_len > NFSV3_MAX_FH_SIZE)
+ return (EBADRPC);
+ if (nfhp->nfh_len < (int)sizeof(struct nfs_exphandle))
+ return (ESTALE);
+ v = ntohs(nxh->nxh_flags);
+ if (v & NXHF_INVALIDFH)
+ return (ESTALE);
+
+ *nxp = nfsrv_fhtoexport(nfhp);
+ if (!*nxp)
+ return (ESTALE);
+
+ /* Get the export option structure for this <export, client> tuple. */
+ *nxop = nxo = nfsrv_export_lookup(*nxp, nam);
+ if (nam && (*nxop == NULL))
+ return (EACCES);
+
+ if (nd != NULL) {
+ /* Validate the security flavor of the request */
+ for (i = 0, valid = 0; i < nxo->nxo_sec.count; i++) {
+ if (nd->nd_sec == nxo->nxo_sec.flavors[i]) {
+ valid = 1;
+ break;
+ }
+ }
+ if (!valid) {
+ /*
+ * RFC 2623 section 2.3.2 recommends no authentication
+ * requirement for certain NFS procedures used for mounting.
+ * This allows an unauthenticated superuser on the client
+ * to do mounts for the benefit of authenticated users.
+ */
+ if (nd->nd_vers == NFS_VER2)
+ if (nd->nd_procnum == NFSV2PROC_GETATTR ||
+ nd->nd_procnum == NFSV2PROC_STATFS)
+ valid = 1;
+ if (nd->nd_vers == NFS_VER3)
+ if (nd->nd_procnum == NFSPROC_FSINFO)
+ valid = 1;
+
+ if (!valid)
+ return (NFSERR_AUTHERR | AUTH_REJECTCRED);
+ }
+ }
+
+ if (nxo && (nxo->nxo_flags & NX_OFFLINE))
+ return ((nd == NULL || nd->nd_vers == NFS_VER2) ? ESTALE : NFSERR_TRYLATER);
+
+ /* find mount structure */
+ mp = vfs_getvfs_by_mntonname((*nxp)->nx_fs->nxfs_path);
+ if (mp) {
+ error = vfs_busy(mp, LK_NOWAIT);
+ mount_iterdrop(mp);
+ if (error)
+ mp = NULL;
+ }
+ if (!mp) {
+ /*
+ * We have an export, but no mount?
+ * Perhaps the export just hasn't been marked offline yet.
+ */
+ return ((nd == NULL || nd->nd_vers == NFS_VER2) ? ESTALE : NFSERR_TRYLATER);
+ }
+
+ fidp = nfhp->nfh_fhp + sizeof(*nxh);
+ error = VFS_FHTOVP(mp, nxh->nxh_fidlen, fidp, vpp, NULL);
+ vfs_unbusy(mp);
+ if (error)
+ return (error);
+ /* vnode pointer should be good at this point or ... */
+ if (*vpp == NULL)
+ return (ESTALE);
+ return (0);
+}
+
+/*
+ * nfsrv_credcheck() - check/map credentials according
+ * to given export options.
+ */
+int
+nfsrv_credcheck(
+ struct nfsrv_descript *nd,
+ vfs_context_t ctx,
+ __unused struct nfs_export *nx,
+ struct nfs_export_options *nxo)
+{
+ if (nxo && nxo->nxo_cred) {
+ if ((nxo->nxo_flags & NX_MAPALL) ||
+ ((nxo->nxo_flags & NX_MAPROOT) && !suser(nd->nd_cr, NULL))) {
+ kauth_cred_ref(nxo->nxo_cred);
+ kauth_cred_unref(&nd->nd_cr);
+ nd->nd_cr = nxo->nxo_cred;
+ }
+ }
+ ctx->vc_ucred = nd->nd_cr;
+ return (0);
+}
+
+/*
+ * nfsrv_vptofh() - convert vnode to file handle for given export
+ *
+ * If the caller is passing in a vnode for a ".." directory entry,
+ * they can pass a directory NFS file handle (dnfhp) which will be
+ * checked against the root export file handle. If it matches, we
+ * refuse to provide the file handle for the out-of-export directory.
+ */
+int
+nfsrv_vptofh(
+ struct nfs_export *nx,
+ int nfsvers,
+ struct nfs_filehandle *dnfhp,
+ vnode_t vp,
+ vfs_context_t ctx,
+ struct nfs_filehandle *nfhp)
+{
+ int error;
+ uint32_t maxfidsize;
+
+ nfhp->nfh_fhp = (u_char*)&nfhp->nfh_xh;
+ nfhp->nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
+ nfhp->nfh_xh.nxh_fsid = htonl(nx->nx_fs->nxfs_id);
+ nfhp->nfh_xh.nxh_expid = htonl(nx->nx_id);
+ nfhp->nfh_xh.nxh_flags = 0;
+ nfhp->nfh_xh.nxh_reserved = 0;
+
+ if (nfsvers == NFS_VER2)
+ bzero(&nfhp->nfh_fid[0], NFSV2_MAX_FID_SIZE);
+
+ /* if directory FH matches export root, return invalid FH */
+ if (dnfhp && nfsrv_fhmatch(dnfhp, &nx->nx_fh)) {
+ if (nfsvers == NFS_VER2)
+ nfhp->nfh_len = NFSX_V2FH;
+ else
+ nfhp->nfh_len = sizeof(nfhp->nfh_xh);
+ nfhp->nfh_xh.nxh_fidlen = 0;
+ nfhp->nfh_xh.nxh_flags = htons(NXHF_INVALIDFH);
+ return (0);
+ }
+
+ if (nfsvers == NFS_VER2)
+ maxfidsize = NFSV2_MAX_FID_SIZE;
+ else
+ maxfidsize = NFSV3_MAX_FID_SIZE;
+ nfhp->nfh_len = maxfidsize;
+
+ error = VFS_VPTOFH(vp, (int*)&nfhp->nfh_len, &nfhp->nfh_fid[0], ctx);
+ if (error)
+ return (error);
+ if (nfhp->nfh_len > maxfidsize)
+ return (EOVERFLOW);
+ nfhp->nfh_xh.nxh_fidlen = nfhp->nfh_len;
+ nfhp->nfh_len += sizeof(nfhp->nfh_xh);
+ if ((nfsvers == NFS_VER2) && (nfhp->nfh_len < NFSX_V2FH))
+ nfhp->nfh_len = NFSX_V2FH;
+
+ return (0);
+}
+
+/*
+ * Compare two file handles to see it they're the same.
+ * Note that we don't use nfh_len because that may include
+ * padding in an NFSv2 file handle.
+ */
+int
+nfsrv_fhmatch(struct nfs_filehandle *fh1, struct nfs_filehandle *fh2)
+{
+ struct nfs_exphandle *nxh1, *nxh2;
+ int len1, len2;
+
+ nxh1 = (struct nfs_exphandle *)fh1->nfh_fhp;
+ nxh2 = (struct nfs_exphandle *)fh2->nfh_fhp;
+ len1 = sizeof(fh1->nfh_xh) + nxh1->nxh_fidlen;
+ len2 = sizeof(fh2->nfh_xh) + nxh2->nxh_fidlen;
+ if (len1 != len2)
+ return (0);
+ if (bcmp(nxh1, nxh2, len1))
+ return (0);
+ return (1);
+}
+
+/*
+ * Functions for dealing with active user lists
+ */
+
+/*
+ * Search the hash table for a user node with a matching IP address and uid field.
+ * If found, the node's tm_last timestamp is updated and the node is returned.
+ *
+ * If not found, a new node is allocated (or reclaimed via LRU), initialized, and returned.
+ * Returns NULL if a new node could not be allcoated.
+ *
+ * The list's user_mutex lock MUST be held.
+ */
+struct nfs_user_stat_node *
+nfsrv_get_user_stat_node(struct nfs_active_user_list *list, struct sockaddr *saddr, uid_t uid)
+{
+ struct nfs_user_stat_node *unode;
+ struct timeval now;
+ struct nfs_user_stat_hashtbl_head *head;
+
+ /* seach the hash table */
+ head = NFS_USER_STAT_HASH(list->user_hashtbl, uid);
+ LIST_FOREACH(unode, head, hash_link) {
+ if ((uid == unode->uid) && (nfs_sockaddr_cmp(saddr, (struct sockaddr*)&unode->sock) == 0)) {
+ /* found matching node */
+ break;
+ }
+ }
+
+ if (unode) {
+ /* found node in the hash table, now update lru position */
+ TAILQ_REMOVE(&list->user_lru, unode, lru_link);
+ TAILQ_INSERT_TAIL(&list->user_lru, unode, lru_link);
+
+ /* update time stamp */
+ microtime(&now);
+ unode->tm_last = (uint32_t)now.tv_sec;
+ return unode;
+ }
+
+ if (list->node_count < nfsrv_user_stat_max_nodes) {
+ /* Allocate a new node */
+ MALLOC(unode, struct nfs_user_stat_node *, sizeof(struct nfs_user_stat_node),
+ M_TEMP, M_WAITOK | M_ZERO);
+
+ if (!unode)
+ return NULL;
+
+ /* increment node count */
+ OSAddAtomic(1, &nfsrv_user_stat_node_count);
+ list->node_count++;
+ } else {
+ /* reuse the oldest node in the lru list */
+ unode = TAILQ_FIRST(&list->user_lru);
+
+ if (!unode)
+ return NULL;
+
+ /* Remove the node */
+ TAILQ_REMOVE(&list->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+ }
+
+ /* Initialize the node */
+ unode->uid = uid;
+ bcopy(saddr, &unode->sock, saddr->sa_len);
+ microtime(&now);
+ unode->ops = 0;
+ unode->bytes_read = 0;
+ unode->bytes_written = 0;
+ unode->tm_start = (uint32_t)now.tv_sec;
+ unode->tm_last = (uint32_t)now.tv_sec;
+
+ /* insert the node */
+ TAILQ_INSERT_TAIL(&list->user_lru, unode, lru_link);
+ LIST_INSERT_HEAD(head, unode, hash_link);
+
+ return unode;
}
-/* find an export for the given handle */
-static struct nfs_export *
-nfsrv_fhtoexport(struct nfs_filehandle *nfhp)
+void
+nfsrv_update_user_stat(struct nfs_export *nx, struct nfsrv_descript *nd, uid_t uid, u_int ops, u_int rd_bytes, u_int wr_bytes)
{
- struct nfs_export *nx;
- uint32_t fsid, expid;
+ struct nfs_user_stat_node *unode;
+ struct nfs_active_user_list *ulist;
+ struct sockaddr *saddr;
- fsid = ntohl(nfhp->nfh_xh.nxh_fsid);
- expid = ntohl(nfhp->nfh_xh.nxh_expid);
- nx = NFSEXPHASH(fsid, expid)->lh_first;
- for (; nx; nx = LIST_NEXT(nx, nx_hash)) {
- if (nx->nx_fs->nxfs_id != fsid)
- continue;
- if (nx->nx_id != expid)
- continue;
- break;
+ if ((!nfsrv_user_stat_enabled) || (!nx) || (!nd) || (!nd->nd_nam))
+ return;
+
+ saddr = (struct sockaddr *)mbuf_data(nd->nd_nam);
+
+ /* check address family before going any further */
+ if ((saddr->sa_family != AF_INET) && (saddr->sa_family != AF_INET6))
+ return;
+
+ ulist = &nx->nx_user_list;
+
+ /* lock the active user list */
+ lck_mtx_lock(&ulist->user_mutex);
+
+ /* get the user node */
+ unode = nfsrv_get_user_stat_node(ulist, saddr, uid);
+
+ if (!unode) {
+ lck_mtx_unlock(&ulist->user_mutex);
+ return;
}
- return nx;
+
+ /* update counters */
+ unode->ops += ops;
+ unode->bytes_read += rd_bytes;
+ unode->bytes_written += wr_bytes;
+
+ /* done */
+ lck_mtx_unlock(&ulist->user_mutex);
}
-/*
- * nfsrv_fhtovp() - convert FH to vnode and export info
- */
-int
-nfsrv_fhtovp(
- struct nfs_filehandle *nfhp,
- mbuf_t nam,
- __unused int pubflag,
- vnode_t *vpp,
- struct nfs_export **nxp,
- struct nfs_export_options **nxop)
+/* initialize an active user list */
+void
+nfsrv_init_user_list(struct nfs_active_user_list *ulist)
{
- int error;
- struct mount *mp;
- uint32_t v;
+ uint i;
- *vpp = NULL;
- *nxp = NULL;
- *nxop = NULL;
+ /* initialize the lru */
+ TAILQ_INIT(&ulist->user_lru);
- v = ntohl(nfhp->nfh_xh.nxh_version);
- if (v != NFS_FH_VERSION) {
- /* file handle format not supported */
- return (ESTALE);
- }
- if (nfhp->nfh_len > NFS_MAX_FH_SIZE)
- return (EBADRPC);
- if (nfhp->nfh_len < (int)sizeof(nfhp->nfh_xh))
- return (ESTALE);
- v = ntohs(nfhp->nfh_xh.nxh_flags);
- if (v & NXHF_INVALIDFH)
- return (ESTALE);
+ /* initialize the hash table */
+ for(i = 0; i < NFS_USER_STAT_HASH_SIZE; i++)
+ LIST_INIT(&ulist->user_hashtbl[i]);
+ ulist->node_count = 0;
-/* XXX Revisit when enabling WebNFS */
-#ifdef WEBNFS_ENABLED
- if (nfs_ispublicfh(nfhp)) {
- if (!pubflag || !nfs_pub.np_valid)
- return (ESTALE);
- nfhp = &nfs_pub.np_handle;
- }
-#endif
+ lck_mtx_init(&ulist->user_mutex, nfsrv_active_user_mutex_group, LCK_ATTR_NULL);
+}
- *nxp = nfsrv_fhtoexport(nfhp);
- if (!*nxp)
- return (ESTALE);
+/* Free all nodes in an active user list */
+void
+nfsrv_free_user_list(struct nfs_active_user_list *ulist)
+{
+ struct nfs_user_stat_node *unode;
- /* Get the export option structure for this <export, client> tuple. */
- *nxop = nfsrv_export_lookup(*nxp, nam);
- if (nam && (*nxop == NULL))
- return (EACCES);
+ if (!ulist)
+ return;
- /* find mount structure */
- mp = vfs_getvfs_by_mntonname((*nxp)->nx_fs->nxfs_path);
- if (!mp)
- return (ESTALE);
+ while ((unode = TAILQ_FIRST(&ulist->user_lru))) {
+ /* Remove node and free */
+ TAILQ_REMOVE(&ulist->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+ FREE(unode, M_TEMP);
- error = VFS_FHTOVP(mp, nfhp->nfh_xh.nxh_fidlen, &nfhp->nfh_fid[0], vpp, NULL);
- if (error)
- return (error);
- /* vnode pointer should be good at this point or ... */
- if (*vpp == NULL)
- return (ESTALE);
- return (0);
+ /* decrement node count */
+ OSAddAtomic(-1, &nfsrv_user_stat_node_count);
+ }
+ ulist->node_count = 0;
+
+ lck_mtx_destroy(&ulist->user_mutex, nfsrv_active_user_mutex_group);
}
-/*
- * nfsrv_credcheck() - check/map credentials according to given export options
- */
-int
-nfsrv_credcheck(
- struct nfsrv_descript *nfsd,
- __unused struct nfs_export *nx,
- struct nfs_export_options *nxo)
+/* Reclaim old expired user nodes from active user lists. */
+void
+nfsrv_active_user_list_reclaim(void)
{
- if (nxo && nxo->nxo_cred) {
- if ((nxo->nxo_flags & NX_MAPALL) ||
- ((nxo->nxo_flags & NX_MAPROOT) && !suser(nfsd->nd_cr, NULL))) {
- kauth_cred_ref(nxo->nxo_cred);
- kauth_cred_unref(&nfsd->nd_cr);
- nfsd->nd_cr = nxo->nxo_cred;
+ struct nfs_exportfs *nxfs;
+ struct nfs_export *nx;
+ struct nfs_active_user_list *ulist;
+ struct nfs_user_stat_hashtbl_head oldlist;
+ struct nfs_user_stat_node *unode, *unode_next;
+ struct timeval now;
+ uint32_t tstale;
+
+ LIST_INIT(&oldlist);
+
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ microtime(&now);
+ tstale = now.tv_sec - nfsrv_user_stat_max_idle_sec;
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ /* Scan through all user nodes of this export */
+ ulist = &nx->nx_user_list;
+ lck_mtx_lock(&ulist->user_mutex);
+ for (unode = TAILQ_FIRST(&ulist->user_lru); unode; unode = unode_next) {
+ unode_next = TAILQ_NEXT(unode, lru_link);
+
+ /* check if this node has expired */
+ if (unode->tm_last >= tstale)
+ break;
+
+ /* Remove node from the active user list */
+ TAILQ_REMOVE(&ulist->user_lru, unode, lru_link);
+ LIST_REMOVE(unode, hash_link);
+
+ /* Add node to temp list */
+ LIST_INSERT_HEAD(&oldlist, unode, hash_link);
+
+ /* decrement node count */
+ OSAddAtomic(-1, &nfsrv_user_stat_node_count);
+ ulist->node_count--;
+ }
+ /* can unlock this export's list now */
+ lck_mtx_unlock(&ulist->user_mutex);
}
}
- return (0);
+ lck_rw_done(&nfsrv_export_rwlock);
+
+ /* Free expired nodes */
+ while ((unode = LIST_FIRST(&oldlist))) {
+ LIST_REMOVE(unode, hash_link);
+ FREE(unode, M_TEMP);
+ }
}
+/*
+ * Maps errno values to nfs error numbers.
+ * Use NFSERR_IO as the catch all for ones not specifically defined in
+ * RFC 1094.
+ */
+static u_char nfsrv_v2errmap[] = {
+ NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
+ NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
+ NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
+};
+
+/*
+ * Maps errno values to nfs error numbers.
+ * Although it is not obvious whether or not NFS clients really care if
+ * a returned error value is in the specified list for the procedure, the
+ * safest thing to do is filter them appropriately. For Version 2, the
+ * X/Open XNFS document is the only specification that defines error values
+ * for each RPC (The RFC simply lists all possible error values for all RPCs),
+ * so I have decided to not do this for Version 2.
+ * The first entry is the default error return and the rest are the valid
+ * errors for that RPC in increasing numeric order.
+ */
+static short nfsv3err_null[] = {
+ 0,
+ 0,
+};
+
+static short nfsv3err_getattr[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_setattr[] = {
+ NFSERR_IO,
+ NFSERR_PERM,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOT_SYNC,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_lookup[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_access[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_readlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_read[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_NXIO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_write[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_FBIG,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_create[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_mkdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
+
+static short nfsv3err_symlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
-/*
- * WebNFS: check if a filehandle is a public filehandle. For v3, this
- * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has
- * transformed this to all zeroes in both cases, so check for it.
- */
-int
-nfs_ispublicfh(struct nfs_filehandle *nfhp)
-{
- char *cp = (char *)nfhp;
- unsigned int i;
-
- if (nfhp->nfh_len == 0)
- return (TRUE);
- if (nfhp->nfh_len != NFSX_V2FH)
- return (FALSE);
- for (i = 0; i < NFSX_V2FH; i++)
- if (*cp++ != 0)
- return (FALSE);
- return (TRUE);
-}
+static short nfsv3err_mknod[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_BADTYPE,
+ NFSERR_TRYLATER,
+ 0,
+};
-/*
- * nfsrv_vptofh() - convert vnode to file handle for given export
- *
- * If the caller is passing in a vnode for a ".." directory entry,
- * they can pass a directory NFS file handle (dnfhp) which will be
- * checked against the root export file handle. If it matches, we
- * refuse to provide the file handle for the out-of-export directory.
- */
-int
-nfsrv_vptofh(
- struct nfs_export *nx,
- int v2,
- struct nfs_filehandle *dnfhp,
- vnode_t vp,
- struct vfs_context *ctx,
- struct nfs_filehandle *nfhp)
-{
- int error;
+static short nfsv3err_remove[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- nfhp->nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
- nfhp->nfh_xh.nxh_fsid = htonl(nx->nx_fs->nxfs_id);
- nfhp->nfh_xh.nxh_expid = htonl(nx->nx_id);
- nfhp->nfh_xh.nxh_flags = 0;
- nfhp->nfh_xh.nxh_reserved = 0;
+static short nfsv3err_rmdir[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- if (v2)
- bzero(&nfhp->nfh_fid[0], NFSV2_MAX_FID_SIZE);
+static short nfsv3err_rename[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_ISDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- /* if directory FH matches export root, return invalid FH */
- if (dnfhp && nfsrv_fhmatch(dnfhp, &nx->nx_fh)) {
- nfhp->nfh_len = v2 ? NFSX_V2FH : sizeof(nfhp->nfh_xh);
- nfhp->nfh_xh.nxh_fidlen = 0;
- nfhp->nfh_xh.nxh_flags = htons(NXHF_INVALIDFH);
- return (0);
- }
+static short nfsv3err_link[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- nfhp->nfh_len = v2 ? NFSV2_MAX_FID_SIZE : NFS_MAX_FID_SIZE;
- error = VFS_VPTOFH(vp, &nfhp->nfh_len, &nfhp->nfh_fid[0], ctx);
- if (error)
- return (error);
- if (nfhp->nfh_len > (int)(v2 ? NFSV2_MAX_FID_SIZE : NFS_MAX_FID_SIZE))
- return (EOVERFLOW);
- nfhp->nfh_xh.nxh_fidlen = nfhp->nfh_len;
- nfhp->nfh_len += sizeof(nfhp->nfh_xh);
- if (v2 && (nfhp->nfh_len < NFSX_V2FH))
- nfhp->nfh_len = NFSX_V2FH;
+static short nfsv3err_readdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- return (0);
-}
+static short nfsv3err_readdirplus[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_NOTSUPP,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
-int
-nfsrv_fhmatch(struct nfs_filehandle *fh1, struct nfs_filehandle *fh2)
-{
- int len1, len2;
+static short nfsv3err_fsstat[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
- len1 = sizeof(fh1->nfh_xh) + fh1->nfh_xh.nxh_fidlen;
- len2 = sizeof(fh2->nfh_xh) + fh2->nfh_xh.nxh_fidlen;
- if (len1 != len2)
- return (0);
- if (bcmp(&fh1->nfh_xh, &fh2->nfh_xh, len1))
- return (0);
- return (1);
-}
-
-#endif /* NFS_NOSERVER */
-/*
- * This function compares two net addresses by family and returns TRUE
- * if they are the same host.
- * If there is any doubt, return FALSE.
- * The AF_INET family is handled as a special case so that address mbufs
- * don't need to be saved to store "struct in_addr", which is only 4 bytes.
- */
-int
-netaddr_match(family, haddr, nam)
- int family;
- union nethostaddr *haddr;
- mbuf_t nam;
-{
- struct sockaddr_in *inetaddr;
-
- switch (family) {
- case AF_INET:
- inetaddr = mbuf_data(nam);
- if (inetaddr->sin_family == AF_INET &&
- inetaddr->sin_addr.s_addr == haddr->had_inetaddr)
- return (1);
- break;
-#if ISO
- case AF_ISO:
- {
- struct sockaddr_iso *isoaddr1, *isoaddr2;
-
- isoaddr1 = mbuf_data(nam);
- isoaddr2 = mbuf_data(haddr->had_nam);
- if (isoaddr1->siso_family == AF_ISO &&
- isoaddr1->siso_nlen > 0 &&
- isoaddr1->siso_nlen == isoaddr2->siso_nlen &&
- SAME_ISOADDR(isoaddr1, isoaddr2))
- return (1);
- break;
- }
-#endif /* ISO */
- default:
- break;
- };
- return (0);
-}
+static short nfsv3err_fsinfo[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
-static nfsuint64 nfs_nullcookie = { { 0, 0 } };
-/*
- * This function finds the directory cookie that corresponds to the
- * logical byte offset given.
- */
-nfsuint64 *
-nfs_getcookie(np, off, add)
- struct nfsnode *np;
- off_t off;
- int add;
-{
- struct nfsdmap *dp, *dp2;
- int pos;
-
- pos = off / NFS_DIRBLKSIZ;
- if (pos == 0) {
-#if DIAGNOSTIC
- if (add)
- panic("nfs getcookie add at 0");
-#endif
- return (&nfs_nullcookie);
- }
- pos--;
- dp = np->n_cookies.lh_first;
- if (!dp) {
- if (add) {
- MALLOC_ZONE(dp, struct nfsdmap *, sizeof(struct nfsdmap),
- M_NFSDIROFF, M_WAITOK);
- if (!dp)
- return ((nfsuint64 *)0);
- dp->ndm_eocookie = 0;
- LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list);
- } else
- return ((nfsuint64 *)0);
- }
- while (pos >= NFSNUMCOOKIES) {
- pos -= NFSNUMCOOKIES;
- if (dp->ndm_list.le_next) {
- if (!add && dp->ndm_eocookie < NFSNUMCOOKIES &&
- pos >= dp->ndm_eocookie)
- return ((nfsuint64 *)0);
- dp = dp->ndm_list.le_next;
- } else if (add) {
- MALLOC_ZONE(dp2, struct nfsdmap *, sizeof(struct nfsdmap),
- M_NFSDIROFF, M_WAITOK);
- if (!dp2)
- return ((nfsuint64 *)0);
- dp2->ndm_eocookie = 0;
- LIST_INSERT_AFTER(dp, dp2, ndm_list);
- dp = dp2;
- } else
- return ((nfsuint64 *)0);
- }
- if (pos >= dp->ndm_eocookie) {
- if (add)
- dp->ndm_eocookie = pos + 1;
- else
- return ((nfsuint64 *)0);
- }
- return (&dp->ndm_cookies[pos]);
-}
+static short nfsv3err_pathconf[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
-/*
- * Invalidate cached directory information, except for the actual directory
- * blocks (which are invalidated separately).
- * Done mainly to avoid the use of stale offset cookies.
- */
-void
-nfs_invaldir(vp)
- vnode_t vp;
-{
- struct nfsnode *np = VTONFS(vp);
+static short nfsv3err_commit[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_TRYLATER,
+ 0,
+};
-#if DIAGNOSTIC
- if (vnode_vtype(vp) != VDIR)
- panic("nfs: invaldir not dir");
-#endif
- np->n_direofoffset = 0;
- np->n_cookieverf.nfsuquad[0] = 0;
- np->n_cookieverf.nfsuquad[1] = 0;
- if (np->n_cookies.lh_first)
- np->n_cookies.lh_first->ndm_eocookie = 0;
-}
+static short *nfsrv_v3errmap[] = {
+ nfsv3err_null,
+ nfsv3err_getattr,
+ nfsv3err_setattr,
+ nfsv3err_lookup,
+ nfsv3err_access,
+ nfsv3err_readlink,
+ nfsv3err_read,
+ nfsv3err_write,
+ nfsv3err_create,
+ nfsv3err_mkdir,
+ nfsv3err_symlink,
+ nfsv3err_mknod,
+ nfsv3err_remove,
+ nfsv3err_rmdir,
+ nfsv3err_rename,
+ nfsv3err_link,
+ nfsv3err_readdir,
+ nfsv3err_readdirplus,
+ nfsv3err_fsstat,
+ nfsv3err_fsinfo,
+ nfsv3err_pathconf,
+ nfsv3err_commit,
+};
-#ifndef NFS_NOSERVER
/*
* Map errnos to NFS error numbers. For Version 3 also filter out error
* numbers not specified for the associated procedure.
*/
int
-nfsrv_errmap(nd, err)
- struct nfsrv_descript *nd;
- int err;
+nfsrv_errmap(struct nfsrv_descript *nd, int err)
{
short *defaulterrp, *errp;
- if (nd->nd_flag & ND_NFSV3) {
- if (nd->nd_procnum <= NFSPROC_COMMIT) {
- errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
- while (*++errp) {
- if (*errp == err)
- return (err);
- else if (*errp > err)
- break;
- }
- return ((int)*defaulterrp);
- } else
+ if (nd->nd_vers == NFS_VER2) {
+ if (err <= (int)sizeof(nfsrv_v2errmap))
+ return ((int)nfsrv_v2errmap[err - 1]);
+ return (NFSERR_IO);
+ }
+ /* NFSv3 */
+ if (nd->nd_procnum > NFSPROC_COMMIT)
return (err & 0xffff);
+ errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
+ while (*++errp) {
+ if (*errp == err)
+ return (err);
+ else if (*errp > err)
+ break;
}
- if (err <= ELAST)
- return ((int)nfsrv_v2errmap[err - 1]);
- return (NFSERR_IO);
+ return ((int)*defaulterrp);
}
-#endif /* NFS_NOSERVER */
+#endif /* NFSSERVER */
projects / apple / xnu.git / blobdiff