/*
- * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
* FreeBSD-Id: nfs_vfsops.c,v 1.52 1997/11/12 05:42:21 julian Exp $
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/signal.h>
-#include <sys/proc.h>
-#include <sys/namei.h>
-#include <sys/vnode.h>
+#include <sys/proc_internal.h> /* for fs rooting to update rootdir in fdp */
+#include <sys/kauth.h>
+#include <sys/vnode_internal.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
-#include <sys/mount.h>
-#include <sys/mbuf.h>
+#include <sys/mount_internal.h>
+#include <sys/kpi_mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
+#include <sys/fcntl.h>
+#include <sys/quota.h>
+#include <sys/priv.h>
+#include <libkern/OSAtomic.h>
#include <sys/vm.h>
#include <sys/vmparam.h>
#include <netinet/in.h>
#include <nfs/rpcv2.h>
+#include <nfs/krpc.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
+#include <nfs/nfs_gss.h>
#include <nfs/nfsmount.h>
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
#include <nfs/nfsdiskless.h>
-#include <nfs/nqnfs.h>
-
-extern int nfs_mountroot __P((void));
-
-extern int nfs_ticks;
-extern int nfs_mount_type;
-extern int nfs_resv_mounts;
-
-struct nfsstats nfsstats;
-static int nfs_sysctl(int *, u_int, void *, size_t *, void *, size_t,
- struct proc *);
-/* XXX CSM 11/25/97 Upgrade sysctl.h someday */
-#ifdef notyet
-SYSCTL_NODE(_vfs, MOUNT_NFS, nfs, CTLFLAG_RW, 0, "NFS filesystem");
-SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RD,
- &nfsstats, nfsstats, "");
-#endif
-#if NFSDIAG
-int nfs_debug;
-/* XXX CSM 11/25/97 Upgrade sysctl.h someday */
-#ifdef notyet
-SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
-#endif
+#include <nfs/nfs_lock.h>
+#if CONFIG_MACF
+#include <security/mac_framework.h>
#endif
-SYSCTL_DECL(_vfs_generic_nfs);
-SYSCTL_NODE(_vfs_generic_nfs, OID_AUTO, client, CTLFLAG_RW, 0,
- "nfs client hinge");
-/* how long NFS will wait before signalling vfs that it's down. */
-static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
-SYSCTL_INT(_vfs_generic_nfs_client, NFS_TPRINTF_INITIAL_DELAY,
- initialdowndelay, CTLFLAG_RW, &nfs_tprintf_initial_delay, 0, "");
-/* how long between console messages "nfs server foo not responding" */
-static int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
-SYSCTL_INT(_vfs_generic_nfs_client, NFS_TPRINTF_DELAY,
- nextdowndelay, CTLFLAG_RW, &nfs_tprintf_delay, 0, "");
-
-static int nfs_iosize __P((struct nfsmount *nmp));
-static int mountnfs __P((struct nfs_args *,struct mount *,
- struct mbuf *,char *,char *,struct vnode **));
-static int nfs_mount __P(( struct mount *mp, char *path, caddr_t data,
- struct nameidata *ndp, struct proc *p));
-static int nfs_start __P(( struct mount *mp, int flags,
- struct proc *p));
-static int nfs_unmount __P(( struct mount *mp, int mntflags,
- struct proc *p));
-static int nfs_root __P(( struct mount *mp, struct vnode **vpp));
-static int nfs_quotactl __P(( struct mount *mp, int cmds, uid_t uid,
- caddr_t arg, struct proc *p));
-static int nfs_statfs __P(( struct mount *mp, struct statfs *sbp,
- struct proc *p));
-static int nfs_sync __P(( struct mount *mp, int waitfor,
- struct ucred *cred, struct proc *p));
-static int nfs_vptofh __P(( struct vnode *vp, struct fid *fhp));
-static int nfs_fhtovp __P((struct mount *mp, struct fid *fhp,
- struct mbuf *nam, struct vnode **vpp,
- int *exflagsp, struct ucred **credanonp));
-static int nfs_vget __P((struct mount *, void *, struct vnode **));
+#include <pexpert/pexpert.h>
+#define NFS_VFS_DBG(...) NFS_DBG(NFS_FAC_VFS, 7, ## __VA_ARGS__)
/*
- * nfs vfs operations.
+ * NFS client globals
*/
-struct vfsops nfs_vfsops = {
- nfs_mount,
- nfs_start,
- nfs_unmount,
- nfs_root,
- nfs_quotactl,
- nfs_statfs,
- nfs_sync,
- nfs_vget,
- nfs_fhtovp,
- nfs_vptofh,
- nfs_init,
- nfs_sysctl
-};
-/* XXX CSM 11/25/97 Mysterious kernel.h ld crud */
-#ifdef notyet
-VFS_SET(nfs_vfsops, nfs, MOUNT_NFS, VFCF_NETWORK);
-#endif
+int nfs_ticks;
+static lck_grp_t *nfs_global_grp, *nfs_mount_grp;
+lck_mtx_t *nfs_global_mutex;
+uint32_t nfs_fs_attr_bitmap[NFS_ATTR_BITMAP_LEN];
+uint32_t nfs_object_attr_bitmap[NFS_ATTR_BITMAP_LEN];
+uint32_t nfs_getattr_bitmap[NFS_ATTR_BITMAP_LEN];
+struct nfsclientidlist nfsclientids;
-void nfsargs_ntoh __P((struct nfs_args *));
-static int
-nfs_mount_diskless __P((struct nfs_dlmount *, char *, int, struct vnode **,
- struct mount **));
+/* NFS requests */
+struct nfs_reqqhead nfs_reqq;
+lck_grp_t *nfs_request_grp;
+lck_mtx_t *nfs_request_mutex;
+thread_call_t nfs_request_timer_call;
+int nfs_request_timer_on;
+u_int32_t nfs_xid = 0;
+u_int32_t nfs_xidwrap = 0; /* to build a (non-wrapping) 64 bit xid */
+
+thread_call_t nfs_buf_timer_call;
+
+/* NFSv4 */
+lck_grp_t *nfs_open_grp;
+uint32_t nfs_open_owner_seqnum = 0;
+uint32_t nfs_lock_owner_seqnum = 0;
+thread_call_t nfs4_callback_timer_call;
+int nfs4_callback_timer_on = 0;
+char nfs4_default_domain[MAXPATHLEN];
+
+/* nfsiod */
+lck_grp_t *nfsiod_lck_grp;
+lck_mtx_t *nfsiod_mutex;
+struct nfsiodlist nfsiodfree, nfsiodwork;
+struct nfsiodmountlist nfsiodmounts;
+int nfsiod_thread_count = 0;
+int nfsiod_thread_max = NFS_DEFASYNCTHREAD;
+int nfs_max_async_writes = NFS_DEFMAXASYNCWRITES;
+
+int nfs_iosize = NFS_IOSIZE;
+int nfs_access_cache_timeout = NFS_MAXATTRTIMO;
+int nfs_access_delete = 1; /* too many servers get this wrong - workaround on by default */
+int nfs_access_dotzfs = 1;
+int nfs_access_for_getattr = 0;
+int nfs_allow_async = 0;
+int nfs_statfs_rate_limit = NFS_DEFSTATFSRATELIMIT;
+int nfs_lockd_mounts = 0;
+int nfs_lockd_request_sent = 0;
+int nfs_idmap_ctrl = NFS_IDMAP_CTRL_USE_IDMAP_SERVICE;
+int nfs_callback_port = 0;
+
+int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
+int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
+
+
+int mountnfs(char *, mount_t, vfs_context_t, vnode_t *);
+static int nfs_mount_diskless(struct nfs_dlmount *, const char *, int, vnode_t *, mount_t *, vfs_context_t);
#if !defined(NO_MOUNT_PRIVATE)
-static int
-nfs_mount_diskless_private __P((struct nfs_dlmount *, char *, int,
- struct vnode **, struct mount **));
+static int nfs_mount_diskless_private(struct nfs_dlmount *, const char *, int, vnode_t *, mount_t *, vfs_context_t);
#endif /* NO_MOUNT_PRIVATE */
-static void nfs_convert_oargs __P((struct nfs_args *args,
- struct onfs_args *oargs));
-#if NFSDIAG
-int nfsreqqusers = 0;
-extern int nfsbtlen, nfsbtcpu, nfsbtthread, nfsbt[32];
+int nfs_mount_connect(struct nfsmount *);
+void nfs_mount_drain_and_cleanup(struct nfsmount *);
+void nfs_mount_cleanup(struct nfsmount *);
+int nfs_mountinfo_assemble(struct nfsmount *, struct xdrbuf *);
+int nfs4_mount_update_path_with_symlink(struct nfsmount *, struct nfs_fs_path *, uint32_t, fhandle_t *, int *, fhandle_t *, vfs_context_t);
+
+/*
+ * NFS VFS operations.
+ */
+int nfs_vfs_mount(mount_t, vnode_t, user_addr_t, vfs_context_t);
+int nfs_vfs_start(mount_t, int, vfs_context_t);
+int nfs_vfs_unmount(mount_t, int, vfs_context_t);
+int nfs_vfs_root(mount_t, vnode_t *, vfs_context_t);
+int nfs_vfs_quotactl(mount_t, int, uid_t, caddr_t, vfs_context_t);
+int nfs_vfs_getattr(mount_t, struct vfs_attr *, vfs_context_t);
+int nfs_vfs_sync(mount_t, int, vfs_context_t);
+int nfs_vfs_vget(mount_t, ino64_t, vnode_t *, vfs_context_t);
+int nfs_vfs_vptofh(vnode_t, int *, unsigned char *, vfs_context_t);
+int nfs_vfs_fhtovp(mount_t, int, unsigned char *, vnode_t *, vfs_context_t);
+int nfs_vfs_init(struct vfsconf *);
+int nfs_vfs_sysctl(int *, u_int, user_addr_t, size_t *, user_addr_t, size_t, vfs_context_t);
+
+const struct vfsops nfs_vfsops = {
+ .vfs_mount = nfs_vfs_mount,
+ .vfs_start = nfs_vfs_start,
+ .vfs_unmount = nfs_vfs_unmount,
+ .vfs_root = nfs_vfs_root,
+ .vfs_quotactl = nfs_vfs_quotactl,
+ .vfs_getattr = nfs_vfs_getattr,
+ .vfs_sync = nfs_vfs_sync,
+ .vfs_vget = nfs_vfs_vget,
+ .vfs_fhtovp = nfs_vfs_fhtovp,
+ .vfs_vptofh = nfs_vfs_vptofh,
+ .vfs_init = nfs_vfs_init,
+ .vfs_sysctl = nfs_vfs_sysctl,
+ // We do not support the remaining VFS ops
+};
+
+
+/*
+ * version-specific NFS functions
+ */
+int nfs3_mount(struct nfsmount *, vfs_context_t, nfsnode_t *);
+int nfs4_mount(struct nfsmount *, vfs_context_t, nfsnode_t *);
+int nfs3_fsinfo(struct nfsmount *, nfsnode_t, vfs_context_t);
+int nfs3_update_statfs(struct nfsmount *, vfs_context_t);
+int nfs4_update_statfs(struct nfsmount *, vfs_context_t);
+#if !QUOTA
+#define nfs3_getquota NULL
+#define nfs4_getquota NULL
+#else
+int nfs3_getquota(struct nfsmount *, vfs_context_t, uid_t, int, struct dqblk *);
+int nfs4_getquota(struct nfsmount *, vfs_context_t, uid_t, int, struct dqblk *);
#endif
-static int nfs_iosize(nmp)
- struct nfsmount* nmp;
+const struct nfs_funcs nfs3_funcs = {
+ nfs3_mount,
+ nfs3_update_statfs,
+ nfs3_getquota,
+ nfs3_access_rpc,
+ nfs3_getattr_rpc,
+ nfs3_setattr_rpc,
+ nfs3_read_rpc_async,
+ nfs3_read_rpc_async_finish,
+ nfs3_readlink_rpc,
+ nfs3_write_rpc_async,
+ nfs3_write_rpc_async_finish,
+ nfs3_commit_rpc,
+ nfs3_lookup_rpc_async,
+ nfs3_lookup_rpc_async_finish,
+ nfs3_remove_rpc,
+ nfs3_rename_rpc,
+ nfs3_setlock_rpc,
+ nfs3_unlock_rpc,
+ nfs3_getlock_rpc
+ };
+const struct nfs_funcs nfs4_funcs = {
+ nfs4_mount,
+ nfs4_update_statfs,
+ nfs4_getquota,
+ nfs4_access_rpc,
+ nfs4_getattr_rpc,
+ nfs4_setattr_rpc,
+ nfs4_read_rpc_async,
+ nfs4_read_rpc_async_finish,
+ nfs4_readlink_rpc,
+ nfs4_write_rpc_async,
+ nfs4_write_rpc_async_finish,
+ nfs4_commit_rpc,
+ nfs4_lookup_rpc_async,
+ nfs4_lookup_rpc_async_finish,
+ nfs4_remove_rpc,
+ nfs4_rename_rpc,
+ nfs4_setlock_rpc,
+ nfs4_unlock_rpc,
+ nfs4_getlock_rpc
+ };
+
+/*
+ * Called once to initialize data structures...
+ */
+int
+nfs_vfs_init(__unused struct vfsconf *vfsp)
{
- int iosize;
+ int i;
/*
- * Calculate the size used for io buffers. Use the larger
- * of the two sizes to minimise nfs requests but make sure
- * that it is at least one VM page to avoid wasting buffer
- * space and to allow easy mmapping of I/O buffers.
- * The read/write rpc calls handle the splitting up of
- * buffers into multiple requests if the buffer size is
- * larger than the I/O size.
+ * Check to see if major data structures haven't bloated.
*/
- iosize = max(nmp->nm_rsize, nmp->nm_wsize);
- if (iosize < PAGE_SIZE)
- iosize = PAGE_SIZE;
- return (trunc_page_32(iosize));
-}
+ 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);
-static void nfs_convert_oargs(args,oargs)
- struct nfs_args *args;
- struct onfs_args *oargs;
-{
- args->version = NFS_ARGSVERSION;
- args->addr = oargs->addr;
- args->addrlen = oargs->addrlen;
- args->sotype = oargs->sotype;
- args->proto = oargs->proto;
- args->fh = oargs->fh;
- args->fhsize = oargs->fhsize;
- args->flags = oargs->flags;
- args->wsize = oargs->wsize;
- args->rsize = oargs->rsize;
- args->readdirsize = oargs->readdirsize;
- args->timeo = oargs->timeo;
- args->retrans = oargs->retrans;
- args->maxgrouplist = oargs->maxgrouplist;
- args->readahead = oargs->readahead;
- args->leaseterm = oargs->leaseterm;
- args->deadthresh = oargs->deadthresh;
- args->hostname = oargs->hostname;
+ nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
+ if (nfs_ticks < 1)
+ nfs_ticks = 1;
+
+ /* init async I/O thread pool state */
+ TAILQ_INIT(&nfsiodfree);
+ TAILQ_INIT(&nfsiodwork);
+ TAILQ_INIT(&nfsiodmounts);
+ nfsiod_lck_grp = lck_grp_alloc_init("nfsiod", LCK_GRP_ATTR_NULL);
+ nfsiod_mutex = lck_mtx_alloc_init(nfsiod_lck_grp, LCK_ATTR_NULL);
+
+ /* init lock groups, etc. */
+ nfs_mount_grp = lck_grp_alloc_init("nfs_mount", LCK_GRP_ATTR_NULL);
+ nfs_open_grp = lck_grp_alloc_init("nfs_open", LCK_GRP_ATTR_NULL);
+ nfs_global_grp = lck_grp_alloc_init("nfs_global", LCK_GRP_ATTR_NULL);
+
+ nfs_global_mutex = lck_mtx_alloc_init(nfs_global_grp, LCK_ATTR_NULL);
+
+ /* init request list mutex */
+ nfs_request_grp = lck_grp_alloc_init("nfs_request", LCK_GRP_ATTR_NULL);
+ nfs_request_mutex = lck_mtx_alloc_init(nfs_request_grp, LCK_ATTR_NULL);
+
+ /* initialize NFS request list */
+ TAILQ_INIT(&nfs_reqq);
+
+ nfs_nbinit(); /* Init the nfsbuf table */
+ nfs_nhinit(); /* Init the nfsnode table */
+ nfs_lockinit(); /* Init the nfs lock state */
+ nfs_gss_init(); /* Init RPCSEC_GSS security */
+
+ /* NFSv4 stuff */
+ NFS4_PER_FS_ATTRIBUTES(nfs_fs_attr_bitmap);
+ NFS4_PER_OBJECT_ATTRIBUTES(nfs_object_attr_bitmap);
+ NFS4_DEFAULT_ATTRIBUTES(nfs_getattr_bitmap);
+ for (i=0; i < NFS_ATTR_BITMAP_LEN; i++)
+ nfs_getattr_bitmap[i] &= nfs_object_attr_bitmap[i];
+ TAILQ_INIT(&nfsclientids);
+
+ /* initialize NFS timer callouts */
+ nfs_request_timer_call = thread_call_allocate(nfs_request_timer, NULL);
+ nfs_buf_timer_call = thread_call_allocate(nfs_buf_timer, NULL);
+ nfs4_callback_timer_call = thread_call_allocate(nfs4_callback_timer, NULL);
+
+ return (0);
}
/*
* nfs statfs call
*/
int
-nfs_statfs(mp, sbp, p)
- struct mount *mp;
- register struct statfs *sbp;
- struct proc *p;
+nfs3_update_statfs(struct nfsmount *nmp, vfs_context_t ctx)
{
- register struct vnode *vp;
- register struct nfs_statfs *sfp;
- register caddr_t cp;
- register u_long *tl;
- register long t1, t2;
- caddr_t bpos, dpos, cp2;
- struct nfsmount *nmp = VFSTONFS(mp);
- int error = 0, v3 = (nmp->nm_flag & NFSMNT_NFSV3), retattr;
- struct mbuf *mreq, *mrep, *md, *mb, *mb2;
- struct ucred *cred;
- u_quad_t tquad;
- extern int nfs_mount_type;
+ nfsnode_t np;
+ int error = 0, lockerror, status, nfsvers;
u_int64_t xid;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t val = 0;
-#ifndef nolint
- sfp = (struct nfs_statfs *)0;
-#endif
- vp = nmp->nm_dvp;
- if (error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p))
- return(error);
- cred = crget();
- cred->cr_ngroups = 1;
- if (v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
- (void)nfs_fsinfo(nmp, vp, cred, p);
- nfsstats.rpccnt[NFSPROC_FSSTAT]++;
- nfsm_reqhead(vp, NFSPROC_FSSTAT, NFSX_FH(v3));
- nfsm_fhtom(vp, v3);
- nfsm_request(vp, NFSPROC_FSSTAT, p, cred, &xid);
- if (v3)
- nfsm_postop_attr(vp, retattr, &xid);
- nfsm_dissect(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
-
-/* XXX CSM 12/2/97 Cleanup when/if we integrate FreeBSD mount.h */
-#ifdef notyet
- sbp->f_type = MOUNT_NFS;
-#else
- sbp->f_type = nfs_mount_type;
-#endif
- sbp->f_flags = nmp->nm_flag;
- sbp->f_iosize = nfs_iosize(nmp);
- if (v3) {
- sbp->f_bsize = NFS_FABLKSIZE;
- fxdr_hyper(&sfp->sf_tbytes, &tquad);
- sbp->f_blocks = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
- fxdr_hyper(&sfp->sf_fbytes, &tquad);
- sbp->f_bfree = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
- fxdr_hyper(&sfp->sf_abytes, &tquad);
- sbp->f_bavail = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
- sbp->f_files = (fxdr_unsigned(long, sfp->sf_tfiles.nfsuquad[1])
- & 0x7fffffff);
- sbp->f_ffree = (fxdr_unsigned(long, sfp->sf_ffiles.nfsuquad[1])
- & 0x7fffffff);
+ nfsvers = nmp->nm_vers;
+ np = nmp->nm_dnp;
+ if (!np)
+ return (ENXIO);
+ if ((error = vnode_get(NFSTOV(np))))
+ return (error);
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(nfsvers));
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsmout_if(error);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC_FSSTAT, vfs_context_thread(ctx),
+ vfs_context_ucred(ctx), NULL, R_SOFT, &nmrep, &xid, &status);
+ if (error == ETIMEDOUT)
+ goto nfsmout;
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ if (nfsvers == NFS_VER3)
+ nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
+ if (!lockerror)
+ nfs_node_unlock(np);
+ if (!error)
+ error = status;
+ nfsm_assert(error, NFSTONMP(np), ENXIO);
+ nfsmout_if(error);
+ lck_mtx_lock(&nmp->nm_lock);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_TOTAL);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_FREE);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_AVAIL);
+ if (nfsvers == NFS_VER3) {
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_FILES_AVAIL);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_FILES_TOTAL);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_FILES_FREE);
+ nmp->nm_fsattr.nfsa_bsize = NFS_FABLKSIZE;
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_space_total);
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_space_free);
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_space_avail);
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_files_total);
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_files_free);
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_files_avail);
+ // skip invarsec
} else {
- sbp->f_bsize = fxdr_unsigned(long, sfp->sf_bsize);
- sbp->f_blocks = fxdr_unsigned(long, sfp->sf_blocks);
- sbp->f_bfree = fxdr_unsigned(long, sfp->sf_bfree);
- sbp->f_bavail = fxdr_unsigned(long, sfp->sf_bavail);
- sbp->f_files = 0;
- sbp->f_ffree = 0;
- }
- if (sbp != &mp->mnt_stat) {
- bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
- bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
- }
- nfsm_reqdone;
- VOP_UNLOCK(vp, 0, p);
- crfree(cred);
+ nfsm_chain_adv(error, &nmrep, NFSX_UNSIGNED); // skip tsize?
+ nfsm_chain_get_32(error, &nmrep, nmp->nm_fsattr.nfsa_bsize);
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ if (nmp->nm_fsattr.nfsa_bsize <= 0)
+ nmp->nm_fsattr.nfsa_bsize = NFS_FABLKSIZE;
+ nmp->nm_fsattr.nfsa_space_total = (uint64_t)val * nmp->nm_fsattr.nfsa_bsize;
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ nmp->nm_fsattr.nfsa_space_free = (uint64_t)val * nmp->nm_fsattr.nfsa_bsize;
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ nmp->nm_fsattr.nfsa_space_avail = (uint64_t)val * nmp->nm_fsattr.nfsa_bsize;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ vnode_put(NFSTOV(np));
+ return (error);
+}
+
+int
+nfs4_update_statfs(struct nfsmount *nmp, vfs_context_t ctx)
+{
+ nfsnode_t np;
+ int error = 0, lockerror, status, nfsvers, numops;
+ u_int64_t xid;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
+ struct nfs_vattr nvattr;
+ struct nfsreq_secinfo_args si;
+
+ nfsvers = nmp->nm_vers;
+ np = nmp->nm_dnp;
+ if (!np)
+ return (ENXIO);
+ if ((error = vnode_get(NFSTOV(np))))
+ return (error);
+
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ NVATTR_INIT(&nvattr);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ // PUTFH + GETATTR
+ numops = 2;
+ nfsm_chain_build_alloc_init(error, &nmreq, 15 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "statfs", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
+ NFS4_STATFS_ATTRIBUTES(bitmap);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx),
+ NULL, R_SOFT, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_assert(error, NFSTONMP(np), ENXIO);
+ nfsmout_if(error);
+ lck_mtx_lock(&nmp->nm_lock);
+ error = nfs4_parsefattr(&nmrep, &nmp->nm_fsattr, &nvattr, NULL, NULL, NULL);
+ lck_mtx_unlock(&nmp->nm_lock);
+ nfsmout_if(error);
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ if (!error)
+ nfs_loadattrcache(np, &nvattr, &xid, 0);
+ if (!lockerror)
+ nfs_node_unlock(np);
+ nfsm_assert(error, NFSTONMP(np), ENXIO);
+ nfsmout_if(error);
+ nmp->nm_fsattr.nfsa_bsize = NFS_FABLKSIZE;
+nfsmout:
+ NVATTR_CLEANUP(&nvattr);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ vnode_put(NFSTOV(np));
return (error);
}
/*
- * nfs version 3 fsinfo rpc call
+ * Return an NFS volume name from the mntfrom name.
+ */
+static void
+nfs_get_volname(struct mount *mp, char *volname, size_t len)
+{
+ const char *ptr, *cptr;
+ const char *mntfrom = mp->mnt_vfsstat.f_mntfromname;
+ size_t mflen = strnlen(mntfrom, MAXPATHLEN+1);
+
+ if (mflen > MAXPATHLEN || mflen == 0) {
+ strlcpy(volname, "Bad volname", len);
+ return;
+ }
+
+ /* Move back over trailing slashes */
+ for (ptr = &mntfrom[mflen-1]; ptr != mntfrom && *ptr == '/'; ptr--) {
+ mflen--;
+ }
+
+ /* Find first character after the last slash */
+ cptr = ptr = NULL;
+ for(size_t i = 0; i < mflen; i++) {
+ if (mntfrom[i] == '/')
+ ptr = &mntfrom[i+1];
+ /* And the first character after the first colon */
+ else if (cptr == NULL && mntfrom[i] == ':')
+ cptr = &mntfrom[i+1];
+ }
+
+ /*
+ * No slash or nothing after the last slash
+ * use everything past the first colon
+ */
+ if (ptr == NULL || *ptr == '\0')
+ ptr = cptr;
+ /* Otherwise use the mntfrom name */
+ if (ptr == NULL)
+ ptr = mntfrom;
+
+ mflen = &mntfrom[mflen] - ptr;
+ len = mflen+1 < len ? mflen+1 : len;
+
+ strlcpy(volname, ptr, len);
+}
+
+/*
+ * The NFS VFS_GETATTR function: "statfs"-type information is retrieved
+ * using the nf_update_statfs() function, and other attributes are cobbled
+ * together from whatever sources we can (getattr, fsinfo, pathconf).
*/
int
-nfs_fsinfo(nmp, vp, cred, p)
- register struct nfsmount *nmp;
- register struct vnode *vp;
- struct ucred *cred;
- struct proc *p;
+nfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t ctx)
{
- register struct nfsv3_fsinfo *fsp;
- register caddr_t cp;
- register long t1, t2;
- register u_long *tl, pref, max;
- caddr_t bpos, dpos, cp2;
- int error = 0, retattr;
- struct mbuf *mreq, *mrep, *md, *mb, *mb2;
- u_int64_t xid;
+ struct nfsmount *nmp;
+ uint32_t bsize;
+ int error = 0, nfsvers;
- nfsstats.rpccnt[NFSPROC_FSINFO]++;
- nfsm_reqhead(vp, NFSPROC_FSINFO, NFSX_FH(1));
- nfsm_fhtom(vp, 1);
- nfsm_request(vp, NFSPROC_FSINFO, p, cred, &xid);
- nfsm_postop_attr(vp, retattr, &xid);
- if (!error) {
- nfsm_dissect(fsp, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
- pref = fxdr_unsigned(u_long, fsp->fs_wtpref);
- if (pref < nmp->nm_wsize)
- nmp->nm_wsize = (pref + NFS_FABLKSIZE - 1) &
- ~(NFS_FABLKSIZE - 1);
- max = fxdr_unsigned(u_long, fsp->fs_wtmax);
- if (max < nmp->nm_wsize) {
- nmp->nm_wsize = max & ~(NFS_FABLKSIZE - 1);
- if (nmp->nm_wsize == 0)
- nmp->nm_wsize = max;
- }
- pref = fxdr_unsigned(u_long, fsp->fs_rtpref);
- if (pref < nmp->nm_rsize)
- nmp->nm_rsize = (pref + NFS_FABLKSIZE - 1) &
- ~(NFS_FABLKSIZE - 1);
- max = fxdr_unsigned(u_long, fsp->fs_rtmax);
- if (max < nmp->nm_rsize) {
- nmp->nm_rsize = max & ~(NFS_FABLKSIZE - 1);
- if (nmp->nm_rsize == 0)
- nmp->nm_rsize = max;
+ nmp = VFSTONFS(mp);
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ if (VFSATTR_IS_ACTIVE(fsap, f_bsize) ||
+ VFSATTR_IS_ACTIVE(fsap, f_iosize) ||
+ VFSATTR_IS_ACTIVE(fsap, f_blocks) ||
+ VFSATTR_IS_ACTIVE(fsap, f_bfree) ||
+ VFSATTR_IS_ACTIVE(fsap, f_bavail) ||
+ VFSATTR_IS_ACTIVE(fsap, f_bused) ||
+ VFSATTR_IS_ACTIVE(fsap, f_files) ||
+ VFSATTR_IS_ACTIVE(fsap, f_ffree)) {
+ int statfsrate = nfs_statfs_rate_limit;
+ int refresh = 1;
+
+ /*
+ * Are we rate-limiting statfs RPCs?
+ * (Treat values less than 1 or greater than 1,000,000 as no limit.)
+ */
+ if ((statfsrate > 0) && (statfsrate < 1000000)) {
+ struct timeval now;
+ uint32_t stamp;
+
+ microuptime(&now);
+ lck_mtx_lock(&nmp->nm_lock);
+ stamp = (now.tv_sec * statfsrate) + (now.tv_usec / (1000000/statfsrate));
+ if (stamp != nmp->nm_fsattrstamp) {
+ refresh = 1;
+ nmp->nm_fsattrstamp = stamp;
+ } else {
+ refresh = 0;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ if (refresh && !nfs_use_cache(nmp))
+ error = nmp->nm_funcs->nf_update_statfs(nmp, ctx);
+ if ((error == ESTALE) || (error == ETIMEDOUT))
+ error = 0;
+ if (error)
+ return (error);
+
+ lck_mtx_lock(&nmp->nm_lock);
+ VFSATTR_RETURN(fsap, f_iosize, nfs_iosize);
+ VFSATTR_RETURN(fsap, f_bsize, nmp->nm_fsattr.nfsa_bsize);
+ bsize = nmp->nm_fsattr.nfsa_bsize;
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_TOTAL))
+ VFSATTR_RETURN(fsap, f_blocks, nmp->nm_fsattr.nfsa_space_total / bsize);
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_FREE))
+ VFSATTR_RETURN(fsap, f_bfree, nmp->nm_fsattr.nfsa_space_free / bsize);
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_AVAIL))
+ VFSATTR_RETURN(fsap, f_bavail, nmp->nm_fsattr.nfsa_space_avail / bsize);
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_TOTAL) &&
+ NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SPACE_FREE))
+ VFSATTR_RETURN(fsap, f_bused,
+ (nmp->nm_fsattr.nfsa_space_total / bsize) -
+ (nmp->nm_fsattr.nfsa_space_free / bsize));
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_FILES_TOTAL))
+ VFSATTR_RETURN(fsap, f_files, nmp->nm_fsattr.nfsa_files_total);
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_FILES_FREE))
+ VFSATTR_RETURN(fsap, f_ffree, nmp->nm_fsattr.nfsa_files_free);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ if (VFSATTR_IS_ACTIVE(fsap, f_vol_name)) {
+ /*%%% IF fail over support is implemented we may need to take nm_lock */
+ nfs_get_volname(mp, fsap->f_vol_name, MAXPATHLEN);
+ VFSATTR_SET_SUPPORTED(fsap, f_vol_name);
+ }
+ if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
+ u_int32_t caps, valid;
+ nfsnode_t np = nmp->nm_dnp;
+
+ nfsm_assert(error, VFSTONFS(mp) && np, ENXIO);
+ if (error)
+ return (error);
+ lck_mtx_lock(&nmp->nm_lock);
+
+ /*
+ * The capabilities[] array defines what this volume supports.
+ *
+ * The valid[] array defines which bits this code understands
+ * the meaning of (whether the volume has that capability or not).
+ * Any zero bits here means "I don't know what you're asking about"
+ * and the caller cannot tell whether that capability is
+ * present or not.
+ */
+ caps = valid = 0;
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SYMLINK_SUPPORT)) {
+ valid |= VOL_CAP_FMT_SYMBOLICLINKS;
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_SYMLINK)
+ caps |= VOL_CAP_FMT_SYMBOLICLINKS;
+ }
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_LINK_SUPPORT)) {
+ valid |= VOL_CAP_FMT_HARDLINKS;
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_LINK)
+ caps |= VOL_CAP_FMT_HARDLINKS;
}
- pref = fxdr_unsigned(u_long, fsp->fs_dtpref);
- if (pref < nmp->nm_readdirsize)
- nmp->nm_readdirsize = pref;
- if (max < nmp->nm_readdirsize) {
- nmp->nm_readdirsize = max;
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CASE_INSENSITIVE)) {
+ valid |= VOL_CAP_FMT_CASE_SENSITIVE;
+ if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_CASE_INSENSITIVE))
+ caps |= VOL_CAP_FMT_CASE_SENSITIVE;
}
- nmp->nm_state |= NFSSTA_GOTFSINFO;
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CASE_PRESERVING)) {
+ valid |= VOL_CAP_FMT_CASE_PRESERVING;
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_CASE_PRESERVING)
+ caps |= VOL_CAP_FMT_CASE_PRESERVING;
+ }
+ /* Note: VOL_CAP_FMT_2TB_FILESIZE is actually used to test for "large file support" */
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXFILESIZE)) {
+ /* Is server's max file size at least 4GB? */
+ if (nmp->nm_fsattr.nfsa_maxfilesize >= 0x100000000ULL)
+ caps |= VOL_CAP_FMT_2TB_FILESIZE;
+ } else if (nfsvers >= NFS_VER3) {
+ /*
+ * NFSv3 and up supports 64 bits of file size.
+ * So, we'll just assume maxfilesize >= 4GB
+ */
+ caps |= VOL_CAP_FMT_2TB_FILESIZE;
+ }
+ if (nfsvers >= NFS_VER4) {
+ caps |= VOL_CAP_FMT_HIDDEN_FILES;
+ valid |= VOL_CAP_FMT_HIDDEN_FILES;
+ // VOL_CAP_FMT_OPENDENYMODES
+// caps |= VOL_CAP_FMT_OPENDENYMODES;
+// valid |= VOL_CAP_FMT_OPENDENYMODES;
+ }
+ // no version of nfs supports immutable files
+ caps |= VOL_CAP_FMT_NO_IMMUTABLE_FILES;
+ valid |= VOL_CAP_FMT_NO_IMMUTABLE_FILES;
+
+ fsap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] =
+ // VOL_CAP_FMT_PERSISTENTOBJECTIDS |
+ // VOL_CAP_FMT_SYMBOLICLINKS |
+ // VOL_CAP_FMT_HARDLINKS |
+ // VOL_CAP_FMT_JOURNAL |
+ // VOL_CAP_FMT_JOURNAL_ACTIVE |
+ // VOL_CAP_FMT_NO_ROOT_TIMES |
+ // VOL_CAP_FMT_SPARSE_FILES |
+ // VOL_CAP_FMT_ZERO_RUNS |
+ // VOL_CAP_FMT_CASE_SENSITIVE |
+ // VOL_CAP_FMT_CASE_PRESERVING |
+ // VOL_CAP_FMT_FAST_STATFS |
+ // VOL_CAP_FMT_2TB_FILESIZE |
+ // VOL_CAP_FMT_OPENDENYMODES |
+ // VOL_CAP_FMT_HIDDEN_FILES |
+ caps;
+ fsap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] =
+ VOL_CAP_FMT_PERSISTENTOBJECTIDS |
+ // VOL_CAP_FMT_SYMBOLICLINKS |
+ // VOL_CAP_FMT_HARDLINKS |
+ // VOL_CAP_FMT_JOURNAL |
+ // VOL_CAP_FMT_JOURNAL_ACTIVE |
+ // VOL_CAP_FMT_NO_ROOT_TIMES |
+ // VOL_CAP_FMT_SPARSE_FILES |
+ // VOL_CAP_FMT_ZERO_RUNS |
+ // VOL_CAP_FMT_CASE_SENSITIVE |
+ // VOL_CAP_FMT_CASE_PRESERVING |
+ VOL_CAP_FMT_FAST_STATFS |
+ VOL_CAP_FMT_2TB_FILESIZE |
+ // VOL_CAP_FMT_OPENDENYMODES |
+ // VOL_CAP_FMT_HIDDEN_FILES |
+ valid;
+
+ /*
+ * We don't support most of the interfaces.
+ *
+ * We MAY support locking, but we don't have any easy way of probing.
+ * We can tell if there's no lockd running or if locks have been
+ * disabled for a mount, so we can definitely answer NO in that case.
+ * Any attempt to send a request to lockd to test for locking support
+ * may cause the lazily-launched locking daemons to be started
+ * unnecessarily. So we avoid that. However, we do record if we ever
+ * successfully perform a lock operation on a mount point, so if it
+ * looks like lock ops have worked, we do report that we support them.
+ */
+ caps = valid = 0;
+ if (nfsvers >= NFS_VER4) {
+ caps = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK;
+ valid = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK;
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL)
+ caps |= VOL_CAP_INT_EXTENDED_SECURITY;
+ valid |= VOL_CAP_INT_EXTENDED_SECURITY;
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR)
+ caps |= VOL_CAP_INT_EXTENDED_ATTR;
+ valid |= VOL_CAP_INT_EXTENDED_ATTR;
+#if NAMEDSTREAMS
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR)
+ caps |= VOL_CAP_INT_NAMEDSTREAMS;
+ valid |= VOL_CAP_INT_NAMEDSTREAMS;
+#endif
+ } else if (nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED) {
+ /* locks disabled on this mount, so they definitely won't work */
+ valid = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK;
+ } else if (nmp->nm_state & NFSSTA_LOCKSWORK) {
+ caps = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK;
+ valid = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK;
+ }
+ fsap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] =
+ // VOL_CAP_INT_SEARCHFS |
+ // VOL_CAP_INT_ATTRLIST |
+ // VOL_CAP_INT_NFSEXPORT |
+ // VOL_CAP_INT_READDIRATTR |
+ // VOL_CAP_INT_EXCHANGEDATA |
+ // VOL_CAP_INT_COPYFILE |
+ // VOL_CAP_INT_ALLOCATE |
+ // VOL_CAP_INT_VOL_RENAME |
+ // VOL_CAP_INT_ADVLOCK |
+ // VOL_CAP_INT_FLOCK |
+ // VOL_CAP_INT_EXTENDED_SECURITY |
+ // VOL_CAP_INT_USERACCESS |
+ // VOL_CAP_INT_MANLOCK |
+ // VOL_CAP_INT_NAMEDSTREAMS |
+ // VOL_CAP_INT_EXTENDED_ATTR |
+ VOL_CAP_INT_REMOTE_EVENT |
+ caps;
+ fsap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] =
+ VOL_CAP_INT_SEARCHFS |
+ VOL_CAP_INT_ATTRLIST |
+ VOL_CAP_INT_NFSEXPORT |
+ VOL_CAP_INT_READDIRATTR |
+ VOL_CAP_INT_EXCHANGEDATA |
+ VOL_CAP_INT_COPYFILE |
+ VOL_CAP_INT_ALLOCATE |
+ VOL_CAP_INT_VOL_RENAME |
+ // VOL_CAP_INT_ADVLOCK |
+ // VOL_CAP_INT_FLOCK |
+ // VOL_CAP_INT_EXTENDED_SECURITY |
+ // VOL_CAP_INT_USERACCESS |
+ // VOL_CAP_INT_MANLOCK |
+ // VOL_CAP_INT_NAMEDSTREAMS |
+ // VOL_CAP_INT_EXTENDED_ATTR |
+ VOL_CAP_INT_REMOTE_EVENT |
+ valid;
+
+ fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
+ fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
+
+ fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
+ fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
+
+ VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
+ fsap->f_attributes.validattr.commonattr = 0;
+ fsap->f_attributes.validattr.volattr =
+ ATTR_VOL_NAME | ATTR_VOL_CAPABILITIES | ATTR_VOL_ATTRIBUTES;
+ fsap->f_attributes.validattr.dirattr = 0;
+ fsap->f_attributes.validattr.fileattr = 0;
+ fsap->f_attributes.validattr.forkattr = 0;
+
+ fsap->f_attributes.nativeattr.commonattr = 0;
+ fsap->f_attributes.nativeattr.volattr =
+ ATTR_VOL_NAME | ATTR_VOL_CAPABILITIES | ATTR_VOL_ATTRIBUTES;
+ fsap->f_attributes.nativeattr.dirattr = 0;
+ fsap->f_attributes.nativeattr.fileattr = 0;
+ fsap->f_attributes.nativeattr.forkattr = 0;
+
+ VFSATTR_SET_SUPPORTED(fsap, f_attributes);
}
- nfsm_reqdone;
+
+ return (error);
+}
+
+/*
+ * nfs version 3 fsinfo rpc call
+ */
+int
+nfs3_fsinfo(struct nfsmount *nmp, nfsnode_t np, vfs_context_t ctx)
+{
+ int error = 0, lockerror, status, nmlocked = 0;
+ u_int64_t xid;
+ uint32_t val, prefsize, maxsize;
+ struct nfsm_chain nmreq, nmrep;
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(nmp->nm_vers));
+ nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsmout_if(error);
+ error = nfs_request(np, NULL, &nmreq, NFSPROC_FSINFO, ctx, NULL, &nmrep, &xid, &status);
+ if ((lockerror = nfs_node_lock(np)))
+ error = lockerror;
+ nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
+ if (!lockerror)
+ nfs_node_unlock(np);
+ if (!error)
+ error = status;
+ nfsmout_if(error);
+
+ lck_mtx_lock(&nmp->nm_lock);
+ nmlocked = 1;
+
+ nfsm_chain_get_32(error, &nmrep, maxsize);
+ nfsm_chain_get_32(error, &nmrep, prefsize);
+ nfsmout_if(error);
+ nmp->nm_fsattr.nfsa_maxread = maxsize;
+ if (prefsize < nmp->nm_rsize)
+ nmp->nm_rsize = (prefsize + NFS_FABLKSIZE - 1) &
+ ~(NFS_FABLKSIZE - 1);
+ if ((maxsize > 0) && (maxsize < nmp->nm_rsize)) {
+ nmp->nm_rsize = maxsize & ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_rsize == 0)
+ nmp->nm_rsize = maxsize;
+ }
+ nfsm_chain_adv(error, &nmrep, NFSX_UNSIGNED); // skip rtmult
+
+ nfsm_chain_get_32(error, &nmrep, maxsize);
+ nfsm_chain_get_32(error, &nmrep, prefsize);
+ nfsmout_if(error);
+ nmp->nm_fsattr.nfsa_maxwrite = maxsize;
+ if (prefsize < nmp->nm_wsize)
+ nmp->nm_wsize = (prefsize + NFS_FABLKSIZE - 1) &
+ ~(NFS_FABLKSIZE - 1);
+ if ((maxsize > 0) && (maxsize < nmp->nm_wsize)) {
+ nmp->nm_wsize = maxsize & ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_wsize == 0)
+ nmp->nm_wsize = maxsize;
+ }
+ nfsm_chain_adv(error, &nmrep, NFSX_UNSIGNED); // skip wtmult
+
+ nfsm_chain_get_32(error, &nmrep, prefsize);
+ nfsmout_if(error);
+ if ((prefsize > 0) && (prefsize < nmp->nm_readdirsize))
+ nmp->nm_readdirsize = prefsize;
+ if ((nmp->nm_fsattr.nfsa_maxread > 0) &&
+ (nmp->nm_fsattr.nfsa_maxread < nmp->nm_readdirsize))
+ nmp->nm_readdirsize = nmp->nm_fsattr.nfsa_maxread;
+
+ nfsm_chain_get_64(error, &nmrep, nmp->nm_fsattr.nfsa_maxfilesize);
+
+ nfsm_chain_adv(error, &nmrep, 2 * NFSX_UNSIGNED); // skip time_delta
+
+ /* convert FS properties to our own flags */
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ if (val & NFSV3FSINFO_LINK)
+ nmp->nm_fsattr.nfsa_flags |= NFS_FSFLAG_LINK;
+ if (val & NFSV3FSINFO_SYMLINK)
+ nmp->nm_fsattr.nfsa_flags |= NFS_FSFLAG_SYMLINK;
+ if (val & NFSV3FSINFO_HOMOGENEOUS)
+ nmp->nm_fsattr.nfsa_flags |= NFS_FSFLAG_HOMOGENEOUS;
+ if (val & NFSV3FSINFO_CANSETTIME)
+ nmp->nm_fsattr.nfsa_flags |= NFS_FSFLAG_SET_TIME;
+ nmp->nm_state |= NFSSTA_GOTFSINFO;
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXREAD);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXWRITE);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXFILESIZE);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_LINK_SUPPORT);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_SYMLINK_SUPPORT);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_HOMOGENEOUS);
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CANSETTIME);
+nfsmout:
+ if (nmlocked)
+ lck_mtx_unlock(&nmp->nm_lock);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
return (error);
}
* - build the rootfs mount point and call mountnfs() to do the rest.
*/
int
-nfs_mountroot()
+nfs_mountroot(void)
{
struct nfs_diskless nd;
- struct vattr attr;
- struct mount *mp;
- struct vnode *vp;
- struct proc *procp;
- long n;
+ mount_t mp = NULL;
+ vnode_t vp = NULL;
+ vfs_context_t ctx;
int error;
#if !defined(NO_MOUNT_PRIVATE)
- struct mount *mppriv;
- struct vnode *vppriv;
+ mount_t mppriv = NULL;
+ vnode_t vppriv = NULL;
#endif /* NO_MOUNT_PRIVATE */
- int v3;
-
- procp = current_proc(); /* XXX */
+ int v3, sotype;
/*
* Call nfs_boot_init() to fill in the nfs_diskless struct.
* we're called.
*/
bzero((caddr_t) &nd, sizeof(nd));
- error = nfs_boot_init(&nd, procp);
- if (error) {
- panic("nfs_boot_init failed with %d\n", error);
- }
+ error = nfs_boot_init(&nd);
+ if (error)
+ panic("nfs_boot_init: unable to initialize NFS root system information, "
+ "error %d, check configuration: %s\n", error, PE_boot_args());
- /* try NFSv3 first, if that fails then try NFSv2 */
+ /*
+ * Try NFSv3 first, then fallback to NFSv2.
+ * Likewise, try TCP first, then fall back to UDP.
+ */
v3 = 1;
+ sotype = SOCK_STREAM;
tryagain:
- error = nfs_boot_getfh(&nd, procp, v3);
+ error = nfs_boot_getfh(&nd, v3, sotype);
if (error) {
if (error == EHOSTDOWN || error == EHOSTUNREACH) {
+ if (nd.nd_root.ndm_mntfrom)
+ FREE_ZONE(nd.nd_root.ndm_mntfrom,
+ MAXPATHLEN, M_NAMEI);
if (nd.nd_root.ndm_path)
- FREE_ZONE(nd.nd_root.ndm_path,
+ FREE_ZONE(nd.nd_root.ndm_path,
+ MAXPATHLEN, M_NAMEI);
+ if (nd.nd_private.ndm_mntfrom)
+ FREE_ZONE(nd.nd_private.ndm_mntfrom,
MAXPATHLEN, M_NAMEI);
if (nd.nd_private.ndm_path)
- FREE_ZONE(nd.nd_private.ndm_path,
+ FREE_ZONE(nd.nd_private.ndm_path,
MAXPATHLEN, M_NAMEI);
return (error);
}
if (v3) {
- printf("nfs_boot_getfh(v3) failed with %d, trying v2...\n", error);
+ if (sotype == SOCK_STREAM) {
+ printf("NFS mount (v3,TCP) failed with error %d, trying UDP...\n", error);
+ sotype = SOCK_DGRAM;
+ goto tryagain;
+ }
+ printf("NFS mount (v3,UDP) failed with error %d, trying v2...\n", error);
v3 = 0;
+ sotype = SOCK_STREAM;
goto tryagain;
+ } else if (sotype == SOCK_STREAM) {
+ printf("NFS mount (v2,TCP) failed with error %d, trying UDP...\n", error);
+ sotype = SOCK_DGRAM;
+ goto tryagain;
+ } else {
+ printf("NFS mount (v2,UDP) failed with error %d, giving up...\n", error);
+ }
+ switch(error) {
+ case EPROGUNAVAIL:
+ panic("NFS mount failed: NFS server mountd not responding, check server configuration: %s", PE_boot_args());
+ case EACCES:
+ case EPERM:
+ panic("NFS mount failed: NFS server refused mount, check server configuration: %s", PE_boot_args());
+ default:
+ panic("NFS mount failed with error %d, check configuration: %s", error, PE_boot_args());
}
- panic("nfs_boot_getfh(v2) failed with %d\n", error);
}
+ ctx = vfs_context_kernel();
+
/*
* Create the root mount point.
*/
#if !defined(NO_MOUNT_PRIVATE)
- if ((error = nfs_mount_diskless(&nd.nd_root, "/", MNT_RDONLY, &vp, &mp))) {
+ {
+ //PWC hack until we have a real "mount" tool to remount root rw
+ int rw_root=0;
+ int flags = MNT_ROOTFS|MNT_RDONLY;
+ PE_parse_boot_argn("-rwroot_hack", &rw_root, sizeof (rw_root));
+ if(rw_root)
+ {
+ flags = MNT_ROOTFS;
+ kprintf("-rwroot_hack in effect: mounting root fs read/write\n");
+ }
+
+ if ((error = nfs_mount_diskless(&nd.nd_root, "/", flags, &vp, &mp, ctx)))
#else
- if (error = nfs_mount_diskless(&nd.nd_root, "/", NULL, &vp, &mp)) {
+ if ((error = nfs_mount_diskless(&nd.nd_root, "/", MNT_ROOTFS, &vp, &mp, ctx)))
#endif /* NO_MOUNT_PRIVATE */
+ {
if (v3) {
- printf("nfs_mount_diskless(v3) failed with %d, trying v2...\n", error);
+ if (sotype == SOCK_STREAM) {
+ printf("NFS root mount (v3,TCP) failed with %d, trying UDP...\n", error);
+ sotype = SOCK_DGRAM;
+ goto tryagain;
+ }
+ printf("NFS root mount (v3,UDP) failed with %d, trying v2...\n", error);
v3 = 0;
+ sotype = SOCK_STREAM;
goto tryagain;
+ } else if (sotype == SOCK_STREAM) {
+ printf("NFS root mount (v2,TCP) failed with %d, trying UDP...\n", error);
+ sotype = SOCK_DGRAM;
+ goto tryagain;
+ } else {
+ printf("NFS root mount (v2,UDP) failed with error %d, giving up...\n", error);
}
- panic("nfs_mount_diskless root failed with %d\n", error);
+ panic("NFS root mount failed with error %d, check configuration: %s\n", error, PE_boot_args());
+ }
}
- printf("root on %s\n", (char *)&nd.nd_root.ndm_host);
+ printf("root on %s\n", nd.nd_root.ndm_mntfrom);
- simple_lock(&mountlist_slock);
- CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
- simple_unlock(&mountlist_slock);
- vfs_unbusy(mp, procp);
+ vfs_unbusy(mp);
+ mount_list_add(mp);
rootvp = vp;
#if !defined(NO_MOUNT_PRIVATE)
if (nd.nd_private.ndm_saddr.sin_addr.s_addr) {
error = nfs_mount_diskless_private(&nd.nd_private, "/private",
- NULL, &vppriv, &mppriv);
- if (error) {
- panic("nfs_mount_diskless private failed with %d\n", error);
- }
- printf("private on %s\n", (char *)&nd.nd_private.ndm_host);
-
- simple_lock(&mountlist_slock);
- CIRCLEQ_INSERT_TAIL(&mountlist, mppriv, mnt_list);
- simple_unlock(&mountlist_slock);
- vfs_unbusy(mppriv, procp);
+ 0, &vppriv, &mppriv, ctx);
+ if (error)
+ panic("NFS /private mount failed with error %d, check configuration: %s\n", error, PE_boot_args());
+ printf("private on %s\n", nd.nd_private.ndm_mntfrom);
+
+ vfs_unbusy(mppriv);
+ mount_list_add(mppriv);
}
#endif /* NO_MOUNT_PRIVATE */
+ if (nd.nd_root.ndm_mntfrom)
+ FREE_ZONE(nd.nd_root.ndm_mntfrom, MAXPATHLEN, M_NAMEI);
if (nd.nd_root.ndm_path)
FREE_ZONE(nd.nd_root.ndm_path, MAXPATHLEN, M_NAMEI);
+ if (nd.nd_private.ndm_mntfrom)
+ FREE_ZONE(nd.nd_private.ndm_mntfrom, MAXPATHLEN, M_NAMEI);
if (nd.nd_private.ndm_path)
FREE_ZONE(nd.nd_private.ndm_path, MAXPATHLEN, M_NAMEI);
/* Get root attributes (for the time). */
- error = VOP_GETATTR(vp, &attr, procp->p_ucred, procp);
- if (error) panic("nfs_mountroot: getattr for root");
- n = attr.va_mtime.tv_sec;
- inittodr(n);
+ error = nfs_getattr(VTONFS(vp), NULL, ctx, NGA_UNCACHED);
+ if (error)
+ panic("NFS mount: failed to get attributes for root directory, error %d, check server", error);
return (0);
}
* Internal version of mount system call for diskless setup.
*/
static int
-nfs_mount_diskless(ndmntp, mntname, mntflag, vpp, mpp)
- struct nfs_dlmount *ndmntp;
- char *mntname;
- int mntflag;
- struct vnode **vpp;
- struct mount **mpp;
+nfs_mount_diskless(
+ struct nfs_dlmount *ndmntp,
+ const char *mntname,
+ int mntflag,
+ vnode_t *vpp,
+ mount_t *mpp,
+ vfs_context_t ctx)
{
- struct nfs_args args;
- struct mount *mp;
- struct mbuf *m;
- int error;
- struct proc *procp;
-
- procp = current_proc(); /* XXX */
+ mount_t mp;
+ int error, numcomps;
+ char *xdrbuf, *p, *cp, *frompath, *endserverp;
+ char uaddr[MAX_IPv4_STR_LEN];
+ struct xdrbuf xb;
+ uint32_t mattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t mflags_mask[NFS_MFLAG_BITMAP_LEN];
+ uint32_t mflags[NFS_MFLAG_BITMAP_LEN];
+ uint32_t argslength_offset, attrslength_offset, end_offset;
- if ((error = vfs_rootmountalloc("nfs", ndmntp->ndm_host, &mp))) {
- printf("nfs_mountroot: NFS not configured");
+ if ((error = vfs_rootmountalloc("nfs", ndmntp->ndm_mntfrom, &mp))) {
+ printf("nfs_mount_diskless: NFS not configured\n");
return (error);
}
- mp->mnt_flag = mntflag;
- /* Initialize mount args. */
- bzero((caddr_t) &args, sizeof(args));
- args.addr = (struct sockaddr *)&ndmntp->ndm_saddr;
- args.addrlen = args.addr->sa_len;
- args.sotype = SOCK_DGRAM;
- args.fh = ndmntp->ndm_fh;
- args.fhsize = ndmntp->ndm_fhlen;
- args.hostname = ndmntp->ndm_host;
- args.flags = NFSMNT_RESVPORT;
- if (ndmntp->ndm_nfsv3)
- args.flags |= NFSMNT_NFSV3;
-
- MGET(m, M_DONTWAIT, MT_SONAME);
- bcopy((caddr_t)args.addr, mtod(m, caddr_t),
- (m->m_len = args.addr->sa_len));
- if ((error = mountnfs(&args, mp, m, mntname, args.hostname, vpp))) {
- printf("nfs_mountroot: mount %s failed: %d", mntname, error);
- mp->mnt_vfc->vfc_refcount--;
-
- if (mp->mnt_kern_flag & MNTK_IO_XINFO)
- FREE(mp->mnt_xinfo_ptr, M_TEMP);
- vfs_unbusy(mp, procp);
+ mp->mnt_flag |= mntflag;
+ if (!(mntflag & MNT_RDONLY))
+ mp->mnt_flag &= ~MNT_RDONLY;
- FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
+ /* find the server-side path being mounted */
+ frompath = ndmntp->ndm_mntfrom;
+ if (*frompath == '[') { /* skip IPv6 literal address */
+ while (*frompath && (*frompath != ']'))
+ frompath++;
+ if (*frompath == ']')
+ frompath++;
+ }
+ while (*frompath && (*frompath != ':'))
+ frompath++;
+ endserverp = frompath;
+ while (*frompath && (*frompath == ':'))
+ frompath++;
+ /* count fs location path components */
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ numcomps = 0;
+ while (*p) {
+ numcomps++;
+ while (*p && (*p != '/'))
+ p++;
+ while (*p && (*p == '/'))
+ p++;
+ }
+
+ /* convert address to universal address string */
+ if (inet_ntop(AF_INET, &ndmntp->ndm_saddr.sin_addr, uaddr, sizeof(uaddr)) != uaddr) {
+ printf("nfs_mount_diskless: bad address\n");
+ return (EINVAL);
+ }
+
+ /* prepare mount attributes */
+ NFS_BITMAP_ZERO(mattrs, NFS_MATTR_BITMAP_LEN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_VERSION);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOCKET_TYPE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_PORT);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FH);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FS_LOCATIONS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFLAGS);
+
+ /* prepare mount flags */
+ NFS_BITMAP_ZERO(mflags_mask, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_ZERO(mflags, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RESVPORT);
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RESVPORT);
+
+ /* build xdr buffer */
+ xb_init_buffer(&xb, NULL, 0);
+ xb_add_32(error, &xb, NFS_ARGSVERSION_XDR);
+ argslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // args length
+ xb_add_32(error, &xb, NFS_XDRARGS_VERSION_0);
+ xb_add_bitmap(error, &xb, mattrs, NFS_MATTR_BITMAP_LEN);
+ attrslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // attrs length
+ xb_add_32(error, &xb, ndmntp->ndm_nfsv3 ? 3 : 2); // NFS version
+ xb_add_string(error, &xb, ((ndmntp->ndm_sotype == SOCK_DGRAM) ? "udp" : "tcp"), 3);
+ xb_add_32(error, &xb, ntohs(ndmntp->ndm_saddr.sin_port)); // NFS port
+ xb_add_fh(error, &xb, &ndmntp->ndm_fh[0], ndmntp->ndm_fhlen);
+ /* fs location */
+ xb_add_32(error, &xb, 1); /* fs location count */
+ xb_add_32(error, &xb, 1); /* server count */
+ xb_add_string(error, &xb, ndmntp->ndm_mntfrom, (endserverp - ndmntp->ndm_mntfrom)); /* server name */
+ xb_add_32(error, &xb, 1); /* address count */
+ xb_add_string(error, &xb, uaddr, strlen(uaddr)); /* address */
+ xb_add_32(error, &xb, 0); /* empty server info */
+ xb_add_32(error, &xb, numcomps); /* pathname component count */
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ while (*p) {
+ cp = p;
+ while (*p && (*p != '/'))
+ p++;
+ xb_add_string(error, &xb, cp, (p - cp)); /* component */
+ if (error)
+ break;
+ while (*p && (*p == '/'))
+ p++;
+ }
+ xb_add_32(error, &xb, 0); /* empty fsl info */
+ xb_add_32(error, &xb, mntflag); /* MNT flags */
+ xb_build_done(error, &xb);
+
+ /* update opaque counts */
+ end_offset = xb_offset(&xb);
+ if (!error) {
+ error = xb_seek(&xb, argslength_offset);
+ xb_add_32(error, &xb, end_offset - argslength_offset + XDRWORD/*version*/);
+ }
+ if (!error) {
+ error = xb_seek(&xb, attrslength_offset);
+ xb_add_32(error, &xb, end_offset - attrslength_offset - XDRWORD/*don't include length field*/);
+ }
+ if (error) {
+ printf("nfs_mount_diskless: error %d assembling mount args\n", error);
+ xb_cleanup(&xb);
return (error);
}
-#if 0 /* Causes incorrect reporting of "mounted on" */
- (void) copystr(args.hostname, mp->mnt_stat.f_mntonname, MNAMELEN - 1, 0);
-#endif /* 0 */
- *mpp = mp;
- return (0);
+ /* grab the assembled buffer */
+ xdrbuf = xb_buffer_base(&xb);
+ xb.xb_flags &= ~XB_CLEANUP;
+
+ /* do the mount */
+ if ((error = mountnfs(xdrbuf, mp, ctx, vpp))) {
+ printf("nfs_mountroot: mount %s failed: %d\n", mntname, error);
+ // XXX vfs_rootmountfailed(mp);
+ mount_list_lock();
+ mp->mnt_vtable->vfc_refcount--;
+ mount_list_unlock();
+ vfs_unbusy(mp);
+ mount_lock_destroy(mp);
+#if CONFIG_MACF
+ mac_mount_label_destroy(mp);
+#endif
+ FREE_ZONE(mp, sizeof(struct mount), M_MOUNT);
+ } else {
+ *mpp = mp;
+ }
+ xb_cleanup(&xb);
+ return (error);
}
#if !defined(NO_MOUNT_PRIVATE)
* separately in diskless setup
*/
static int
-nfs_mount_diskless_private(ndmntp, mntname, mntflag, vpp, mpp)
- struct nfs_dlmount *ndmntp;
- char *mntname;
- int mntflag;
- struct vnode **vpp;
- struct mount **mpp;
+nfs_mount_diskless_private(
+ struct nfs_dlmount *ndmntp,
+ const char *mntname,
+ int mntflag,
+ vnode_t *vpp,
+ mount_t *mpp,
+ vfs_context_t ctx)
{
- struct nfs_args args;
- struct mount *mp;
- struct mbuf *m;
- int error;
- struct proc *procp;
- struct vfsconf *vfsp;
+ mount_t mp;
+ int error, numcomps;
+ proc_t procp;
+ struct vfstable *vfsp;
struct nameidata nd;
- struct vnode *vp;
+ vnode_t vp;
+ char *xdrbuf = NULL, *p, *cp, *frompath, *endserverp;
+ char uaddr[MAX_IPv4_STR_LEN];
+ struct xdrbuf xb;
+ uint32_t mattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t mflags_mask[NFS_MFLAG_BITMAP_LEN], mflags[NFS_MFLAG_BITMAP_LEN];
+ uint32_t argslength_offset, attrslength_offset, end_offset;
procp = current_proc(); /* XXX */
+ xb_init(&xb, 0);
{
/*
*/
struct filedesc *fdp; /* pointer to file descriptor state */
fdp = procp->p_fd;
- mountlist.cqh_first->mnt_flag |= MNT_ROOTFS;
+ mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
/* Get the vnode for '/'. Set fdp->fd_cdir to reference it. */
- if (VFS_ROOT(mountlist.cqh_first, &rootvnode))
+ if (VFS_ROOT(mountlist.tqh_first, &rootvnode, NULL))
panic("cannot find root vnode");
- VREF(rootvnode);
+ error = vnode_ref(rootvnode);
+ if (error) {
+ printf("nfs_mountroot: vnode_ref() failed on root vnode!\n");
+ goto out;
+ }
fdp->fd_cdir = rootvnode;
- VOP_UNLOCK(rootvnode, 0, procp);
fdp->fd_rdir = NULL;
}
/*
* Get vnode to be covered
*/
- NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
- mntname, procp);
+ NDINIT(&nd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
+ CAST_USER_ADDR_T(mntname), ctx);
if ((error = namei(&nd))) {
- printf("nfs_mountroot: private namei failed!");
- return (error);
+ printf("nfs_mountroot: private namei failed!\n");
+ goto out;
}
{
- /* undo VREF in mimic main()! */
- vrele(rootvnode);
+ /* undo vnode_ref() in mimic main()! */
+ vnode_rele(rootvnode);
}
+ nameidone(&nd);
vp = nd.ni_vp;
- if ((error = vinvalbuf(vp, V_SAVE, procp->p_ucred, procp, 0, 0))) {
- vput(vp);
- return (error);
+
+ if ((error = VNOP_FSYNC(vp, MNT_WAIT, ctx)) ||
+ (error = buf_invalidateblks(vp, BUF_WRITE_DATA, 0, 0))) {
+ vnode_put(vp);
+ goto out;
}
- if (vp->v_type != VDIR) {
- vput(vp);
- return (ENOTDIR);
+ if (vnode_vtype(vp) != VDIR) {
+ vnode_put(vp);
+ error = ENOTDIR;
+ goto out;
}
for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
- if (!strcmp(vfsp->vfc_name, "nfs"))
+ if (!strncmp(vfsp->vfc_name, "nfs", sizeof(vfsp->vfc_name)))
break;
if (vfsp == NULL) {
- printf("nfs_mountroot: private NFS not configured");
- vput(vp);
- return (ENODEV);
+ printf("nfs_mountroot: private NFS not configured\n");
+ vnode_put(vp);
+ error = ENODEV;
+ goto out;
}
- if (vp->v_mountedhere != NULL) {
- vput(vp);
- return (EBUSY);
+ if (vnode_mountedhere(vp) != NULL) {
+ vnode_put(vp);
+ error = EBUSY;
+ goto out;
}
/*
* Allocate and initialize the filesystem.
*/
- mp = _MALLOC_ZONE((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK);
- bzero((char *)mp, (u_long)sizeof(struct mount));
+ mp = _MALLOC_ZONE((u_int32_t)sizeof(struct mount), M_MOUNT, M_WAITOK);
+ if (!mp) {
+ printf("nfs_mountroot: unable to allocate mount structure\n");
+ vnode_put(vp);
+ error = ENOMEM;
+ goto out;
+ }
+ bzero((char *)mp, sizeof(struct mount));
/* Initialize the default IO constraints */
mp->mnt_maxreadcnt = mp->mnt_maxwritecnt = MAXPHYS;
mp->mnt_segreadcnt = mp->mnt_segwritecnt = 32;
+ mp->mnt_ioflags = 0;
+ mp->mnt_realrootvp = NULLVP;
+ mp->mnt_authcache_ttl = 0; /* Allways go to our lookup */
- lockinit(&mp->mnt_lock, PVFS, "vfslock", 0, 0);
- (void)vfs_busy(mp, LK_NOWAIT, 0, procp);
- LIST_INIT(&mp->mnt_vnodelist);
- mp->mnt_op = vfsp->vfc_vfsops;
- mp->mnt_vfc = vfsp;
+ mount_lock_init(mp);
+ TAILQ_INIT(&mp->mnt_vnodelist);
+ TAILQ_INIT(&mp->mnt_workerqueue);
+ TAILQ_INIT(&mp->mnt_newvnodes);
+ (void)vfs_busy(mp, LK_NOWAIT);
+ TAILQ_INIT(&mp->mnt_vnodelist);
+ mount_list_lock();
vfsp->vfc_refcount++;
- mp->mnt_stat.f_type = vfsp->vfc_typenum;
+ mount_list_unlock();
+ mp->mnt_vtable = vfsp;
+ mp->mnt_op = vfsp->vfc_vfsops;
+ // mp->mnt_stat.f_type = vfsp->vfc_typenum;
mp->mnt_flag = mntflag;
mp->mnt_flag |= vfsp->vfc_flags & MNT_VISFLAGMASK;
- strncpy(mp->mnt_stat.f_fstypename, vfsp->vfc_name, MFSNAMELEN);
+ strncpy(mp->mnt_vfsstat.f_fstypename, vfsp->vfc_name, MFSNAMELEN-1);
vp->v_mountedhere = mp;
mp->mnt_vnodecovered = vp;
- mp->mnt_stat.f_owner = procp->p_ucred->cr_uid;
- (void) copystr(mntname, mp->mnt_stat.f_mntonname, MNAMELEN - 1, 0);
- (void) copystr(ndmntp->ndm_host, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, 0);
-
- /* Initialize mount args. */
- bzero((caddr_t) &args, sizeof(args));
- args.addr = (struct sockaddr *)&ndmntp->ndm_saddr;
- args.addrlen = args.addr->sa_len;
- args.sotype = SOCK_DGRAM;
- args.fh = ndmntp->ndm_fh;
- args.fhsize = ndmntp->ndm_fhlen;
- args.hostname = ndmntp->ndm_host;
- args.flags = NFSMNT_RESVPORT;
- if (ndmntp->ndm_nfsv3)
- args.flags |= NFSMNT_NFSV3;
-
- MGET(m, M_DONTWAIT, MT_SONAME);
- bcopy((caddr_t)args.addr, mtod(m, caddr_t),
- (m->m_len = args.addr->sa_len));
- if ((error = mountnfs(&args, mp, m, mntname, args.hostname, &vp))) {
- printf("nfs_mountroot: mount %s failed: %d", mntname, error);
- mp->mnt_vfc->vfc_refcount--;
-
- if (mp->mnt_kern_flag & MNTK_IO_XINFO)
- FREE(mp->mnt_xinfo_ptr, M_TEMP);
- vfs_unbusy(mp, procp);
+ vp = NULLVP;
+ mp->mnt_vfsstat.f_owner = kauth_cred_getuid(kauth_cred_get());
+ (void) copystr(mntname, mp->mnt_vfsstat.f_mntonname, MAXPATHLEN - 1, 0);
+ (void) copystr(ndmntp->ndm_mntfrom, mp->mnt_vfsstat.f_mntfromname, MAXPATHLEN - 1, 0);
+#if CONFIG_MACF
+ mac_mount_label_init(mp);
+ mac_mount_label_associate(ctx, mp);
+#endif
+
+ /* find the server-side path being mounted */
+ frompath = ndmntp->ndm_mntfrom;
+ if (*frompath == '[') { /* skip IPv6 literal address */
+ while (*frompath && (*frompath != ']'))
+ frompath++;
+ if (*frompath == ']')
+ frompath++;
+ }
+ while (*frompath && (*frompath != ':'))
+ frompath++;
+ endserverp = frompath;
+ while (*frompath && (*frompath == ':'))
+ frompath++;
+ /* count fs location path components */
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ numcomps = 0;
+ while (*p) {
+ numcomps++;
+ while (*p && (*p != '/'))
+ p++;
+ while (*p && (*p == '/'))
+ p++;
+ }
+
+ /* convert address to universal address string */
+ if (inet_ntop(AF_INET, &ndmntp->ndm_saddr.sin_addr, uaddr, sizeof(uaddr)) != uaddr) {
+ printf("nfs_mountroot: bad address\n");
+ error = EINVAL;
+ goto out;
+ }
+
+ /* prepare mount attributes */
+ NFS_BITMAP_ZERO(mattrs, NFS_MATTR_BITMAP_LEN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_VERSION);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOCKET_TYPE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_PORT);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FH);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FS_LOCATIONS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFLAGS);
+
+ /* prepare mount flags */
+ NFS_BITMAP_ZERO(mflags_mask, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_ZERO(mflags, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RESVPORT);
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RESVPORT);
+
+ /* build xdr buffer */
+ xb_init_buffer(&xb, NULL, 0);
+ xb_add_32(error, &xb, NFS_ARGSVERSION_XDR);
+ argslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // args length
+ xb_add_32(error, &xb, NFS_XDRARGS_VERSION_0);
+ xb_add_bitmap(error, &xb, mattrs, NFS_MATTR_BITMAP_LEN);
+ attrslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // attrs length
+ xb_add_32(error, &xb, ndmntp->ndm_nfsv3 ? 3 : 2); // NFS version
+ xb_add_string(error, &xb, ((ndmntp->ndm_sotype == SOCK_DGRAM) ? "udp" : "tcp"), 3);
+ xb_add_32(error, &xb, ntohs(ndmntp->ndm_saddr.sin_port)); // NFS port
+ xb_add_fh(error, &xb, &ndmntp->ndm_fh[0], ndmntp->ndm_fhlen);
+ /* fs location */
+ xb_add_32(error, &xb, 1); /* fs location count */
+ xb_add_32(error, &xb, 1); /* server count */
+ xb_add_string(error, &xb, ndmntp->ndm_mntfrom, (endserverp - ndmntp->ndm_mntfrom)); /* server name */
+ xb_add_32(error, &xb, 1); /* address count */
+ xb_add_string(error, &xb, uaddr, strlen(uaddr)); /* address */
+ xb_add_32(error, &xb, 0); /* empty server info */
+ xb_add_32(error, &xb, numcomps); /* pathname component count */
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ while (*p) {
+ cp = p;
+ while (*p && (*p != '/'))
+ p++;
+ xb_add_string(error, &xb, cp, (p - cp)); /* component */
+ if (error)
+ break;
+ while (*p && (*p == '/'))
+ p++;
+ }
+ xb_add_32(error, &xb, 0); /* empty fsl info */
+ xb_add_32(error, &xb, mntflag); /* MNT flags */
+ xb_build_done(error, &xb);
+
+ /* update opaque counts */
+ end_offset = xb_offset(&xb);
+ if (!error) {
+ error = xb_seek(&xb, argslength_offset);
+ xb_add_32(error, &xb, end_offset - argslength_offset + XDRWORD/*version*/);
+ }
+ if (!error) {
+ error = xb_seek(&xb, attrslength_offset);
+ xb_add_32(error, &xb, end_offset - attrslength_offset - XDRWORD/*don't include length field*/);
+ }
+ if (error) {
+ printf("nfs_mountroot: error %d assembling mount args\n", error);
+ goto out;
+ }
+ /* grab the assembled buffer */
+ xdrbuf = xb_buffer_base(&xb);
+ xb.xb_flags &= ~XB_CLEANUP;
+ /* do the mount */
+ if ((error = mountnfs(xdrbuf, mp, ctx, &vp))) {
+ printf("nfs_mountroot: mount %s failed: %d\n", mntname, error);
+ vnode_put(mp->mnt_vnodecovered);
+ mount_list_lock();
+ vfsp->vfc_refcount--;
+ mount_list_unlock();
+ vfs_unbusy(mp);
+ mount_lock_destroy(mp);
+#if CONFIG_MACF
+ mac_mount_label_destroy(mp);
+#endif
FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
- return (error);
+ goto out;
}
*mpp = mp;
*vpp = vp;
- return (0);
+out:
+ xb_cleanup(&xb);
+ return (error);
}
#endif /* NO_MOUNT_PRIVATE */
/*
- * VFS Operations.
- *
- * mount system call
- * It seems a bit dumb to copyinstr() the host and path here and then
- * bcopy() them in mountnfs(), but I wanted to detect errors before
- * doing the sockargs() call because sockargs() allocates an mbuf and
- * an error after that means that I have to release the mbuf.
+ * Convert old style NFS mount args to XDR.
*/
-/* ARGSUSED */
static int
-nfs_mount(mp, path, data, ndp, p)
- struct mount *mp;
- char *path;
- caddr_t data;
- struct nameidata *ndp;
- struct proc *p;
+nfs_convert_old_nfs_args(mount_t mp, user_addr_t data, vfs_context_t ctx, int argsversion, int inkernel, char **xdrbufp)
{
- int error;
- struct nfs_args args;
- struct mbuf *nam;
- struct vnode *vp;
- char pth[MNAMELEN], hst[MNAMELEN];
+ int error = 0, args64bit, argsize, numcomps;
+ struct user_nfs_args args;
+ struct nfs_args tempargs;
+ caddr_t argsp;
size_t len;
- u_char nfh[NFSX_V3FHMAX];
+ u_char nfh[NFS4_FHSIZE];
+ char *mntfrom, *endserverp, *frompath, *p, *cp;
+ struct sockaddr_storage ss;
+ void *sinaddr;
+ char uaddr[MAX_IPv6_STR_LEN];
+ uint32_t mattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t mflags_mask[NFS_MFLAG_BITMAP_LEN], mflags[NFS_MFLAG_BITMAP_LEN];
+ uint32_t nfsvers, nfslockmode = 0, argslength_offset, attrslength_offset, end_offset;
+ struct xdrbuf xb;
- error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
- if (error)
- return (error);
- if (args.version != NFS_ARGSVERSION) {
-#ifndef NO_COMPAT_PRELITE2
- /*
- * If the argument version is unknown, then assume the
- * caller is a pre-lite2 4.4BSD client and convert its
- * arguments.
- */
- struct onfs_args oargs;
- error = copyin(data, (caddr_t)&oargs, sizeof (struct onfs_args));
- if (error)
- return (error);
- nfs_convert_oargs(&args,&oargs);
-#else /* NO_COMPAT_PRELITE2 */
- return (EPROGMISMATCH);
-#endif /* !NO_COMPAT_PRELITE2 */
- }
- if (args.fhsize > NFSX_V3FHMAX)
- return (EINVAL);
- error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
- if (error)
- return (error);
- error = copyinstr(path, pth, MNAMELEN-1, &len);
- if (error)
- return (error);
- bzero(&pth[len], MNAMELEN - len);
- error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
- if (error)
- return (error);
- bzero(&hst[len], MNAMELEN - len);
- /* sockargs() call must be after above copyin() calls */
- error = sockargs(&nam, (caddr_t)args.addr, args.addrlen, MT_SONAME);
- if (error)
- return (error);
- args.fh = nfh;
- error = mountnfs(&args, mp, nam, pth, hst, &vp);
- return (error);
-}
+ *xdrbufp = NULL;
-/*
- * Common code for mount and mountroot
- */
-static int
-mountnfs(argp, mp, nam, pth, hst, vpp)
- register struct nfs_args *argp;
- register struct mount *mp;
- struct mbuf *nam;
- char *pth, *hst;
- struct vnode **vpp;
-{
- register struct nfsmount *nmp;
- struct nfsnode *np;
- int error, maxio;
- struct vattr attrs;
- struct proc *curproc;
+ /* allocate a temporary buffer for mntfrom */
+ MALLOC_ZONE(mntfrom, char*, MAXPATHLEN, M_NAMEI, M_WAITOK);
+ if (!mntfrom)
+ return (ENOMEM);
+
+ args64bit = (inkernel || vfs_context_is64bit(ctx));
+ argsp = args64bit ? (void*)&args : (void*)&tempargs;
+
+ argsize = args64bit ? sizeof(args) : sizeof(tempargs);
+ switch (argsversion) {
+ case 3:
+ argsize -= NFS_ARGSVERSION4_INCSIZE;
+ case 4:
+ argsize -= NFS_ARGSVERSION5_INCSIZE;
+ case 5:
+ argsize -= NFS_ARGSVERSION6_INCSIZE;
+ case 6:
+ break;
+ default:
+ error = EPROGMISMATCH;
+ goto nfsmout;
+ }
+
+ /* read in the structure */
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, data), argsp, argsize);
+ else
+ error = copyin(data, argsp, argsize);
+ nfsmout_if(error);
+
+ if (!args64bit) {
+ args.addrlen = tempargs.addrlen;
+ args.sotype = tempargs.sotype;
+ args.proto = tempargs.proto;
+ args.fhsize = tempargs.fhsize;
+ args.flags = tempargs.flags;
+ args.wsize = tempargs.wsize;
+ args.rsize = tempargs.rsize;
+ args.readdirsize = tempargs.readdirsize;
+ args.timeo = tempargs.timeo;
+ args.retrans = tempargs.retrans;
+ args.maxgrouplist = tempargs.maxgrouplist;
+ args.readahead = tempargs.readahead;
+ args.leaseterm = tempargs.leaseterm;
+ args.deadthresh = tempargs.deadthresh;
+ args.addr = CAST_USER_ADDR_T(tempargs.addr);
+ args.fh = CAST_USER_ADDR_T(tempargs.fh);
+ args.hostname = CAST_USER_ADDR_T(tempargs.hostname);
+ if (args.version >= 4) {
+ args.acregmin = tempargs.acregmin;
+ args.acregmax = tempargs.acregmax;
+ args.acdirmin = tempargs.acdirmin;
+ args.acdirmax = tempargs.acdirmax;
+ }
+ if (args.version >= 5)
+ args.auth = tempargs.auth;
+ if (args.version >= 6)
+ args.deadtimeout = tempargs.deadtimeout;
+ }
+
+ if ((args.fhsize < 0) || (args.fhsize > NFS4_FHSIZE)) {
+ error = EINVAL;
+ goto nfsmout;
+ }
+ if (args.fhsize > 0) {
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, args.fh), (caddr_t)nfh, args.fhsize);
+ else
+ error = copyin(args.fh, (caddr_t)nfh, args.fhsize);
+ nfsmout_if(error);
+ }
+
+ if (inkernel)
+ error = copystr(CAST_DOWN(void *, args.hostname), mntfrom, MAXPATHLEN-1, &len);
+ else
+ error = copyinstr(args.hostname, mntfrom, MAXPATHLEN-1, &len);
+ nfsmout_if(error);
+ bzero(&mntfrom[len], MAXPATHLEN - len);
+
+ /* find the server-side path being mounted */
+ frompath = mntfrom;
+ if (*frompath == '[') { /* skip IPv6 literal address */
+ while (*frompath && (*frompath != ']'))
+ frompath++;
+ if (*frompath == ']')
+ frompath++;
+ }
+ while (*frompath && (*frompath != ':'))
+ frompath++;
+ endserverp = frompath;
+ while (*frompath && (*frompath == ':'))
+ frompath++;
+ /* count fs location path components */
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ numcomps = 0;
+ while (*p) {
+ numcomps++;
+ while (*p && (*p != '/'))
+ p++;
+ while (*p && (*p == '/'))
+ p++;
+ }
+
+ /* copy socket address */
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, args.addr), &ss, args.addrlen);
+ else {
+ if ((size_t)args.addrlen > sizeof (struct sockaddr_storage))
+ error = EINVAL;
+ else
+ error = copyin(args.addr, &ss, args.addrlen);
+ }
+ nfsmout_if(error);
+ ss.ss_len = args.addrlen;
+
+ /* convert address to universal address string */
+ if (ss.ss_family == AF_INET)
+ sinaddr = &((struct sockaddr_in*)&ss)->sin_addr;
+ else if (ss.ss_family == AF_INET6)
+ sinaddr = &((struct sockaddr_in6*)&ss)->sin6_addr;
+ else
+ sinaddr = NULL;
+ if (!sinaddr || (inet_ntop(ss.ss_family, sinaddr, uaddr, sizeof(uaddr)) != uaddr)) {
+ error = EINVAL;
+ goto nfsmout;
+ }
+
+ /* prepare mount flags */
+ NFS_BITMAP_ZERO(mflags_mask, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_ZERO(mflags, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_SOFT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_INTR);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RESVPORT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOCONNECT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_DUMBTIMER);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_CALLUMNT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RDIRPLUS);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NONEGNAMECACHE);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_MUTEJUKEBOX);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOQUOTA);
+ if (args.flags & NFSMNT_SOFT)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_SOFT);
+ if (args.flags & NFSMNT_INT)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_INTR);
+ if (args.flags & NFSMNT_RESVPORT)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RESVPORT);
+ if (args.flags & NFSMNT_NOCONN)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOCONNECT);
+ if (args.flags & NFSMNT_DUMBTIMR)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_DUMBTIMER);
+ if (args.flags & NFSMNT_CALLUMNT)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_CALLUMNT);
+ if (args.flags & NFSMNT_RDIRPLUS)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RDIRPLUS);
+ if (args.flags & NFSMNT_NONEGNAMECACHE)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NONEGNAMECACHE);
+ if (args.flags & NFSMNT_MUTEJUKEBOX)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_MUTEJUKEBOX);
+ if (args.flags & NFSMNT_NOQUOTA)
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOQUOTA);
+
+ /* prepare mount attributes */
+ NFS_BITMAP_ZERO(mattrs, NFS_MATTR_BITMAP_LEN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FLAGS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_VERSION);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOCKET_TYPE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_PORT);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FH);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FS_LOCATIONS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFLAGS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFROM);
+ if (args.flags & NFSMNT_NFSV4)
+ nfsvers = 4;
+ else if (args.flags & NFSMNT_NFSV3)
+ nfsvers = 3;
+ else
+ nfsvers = 2;
+ if ((args.flags & NFSMNT_RSIZE) && (args.rsize > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READ_SIZE);
+ if ((args.flags & NFSMNT_WSIZE) && (args.wsize > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_WRITE_SIZE);
+ if ((args.flags & NFSMNT_TIMEO) && (args.timeo > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_REQUEST_TIMEOUT);
+ if ((args.flags & NFSMNT_RETRANS) && (args.retrans > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOFT_RETRY_COUNT);
+ if ((args.flags & NFSMNT_MAXGRPS) && (args.maxgrouplist > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MAX_GROUP_LIST);
+ if ((args.flags & NFSMNT_READAHEAD) && (args.readahead > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READAHEAD);
+ if ((args.flags & NFSMNT_READDIRSIZE) && (args.readdirsize > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READDIR_SIZE);
+ if ((args.flags & NFSMNT_NOLOCKS) ||
+ (args.flags & NFSMNT_LOCALLOCKS)) {
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_LOCK_MODE);
+ if (args.flags & NFSMNT_NOLOCKS)
+ nfslockmode = NFS_LOCK_MODE_DISABLED;
+ else if (args.flags & NFSMNT_LOCALLOCKS)
+ nfslockmode = NFS_LOCK_MODE_LOCAL;
+ else
+ nfslockmode = NFS_LOCK_MODE_ENABLED;
+ }
+ if (args.version >= 4) {
+ if ((args.flags & NFSMNT_ACREGMIN) && (args.acregmin > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_REG_MIN);
+ if ((args.flags & NFSMNT_ACREGMAX) && (args.acregmax > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_REG_MAX);
+ if ((args.flags & NFSMNT_ACDIRMIN) && (args.acdirmin > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MIN);
+ if ((args.flags & NFSMNT_ACDIRMAX) && (args.acdirmax > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MAX);
+ }
+ if (args.version >= 5) {
+ if ((args.flags & NFSMNT_SECFLAVOR) || (args.flags & NFSMNT_SECSYSOK))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SECURITY);
+ }
+ if (args.version >= 6) {
+ if ((args.flags & NFSMNT_DEADTIMEOUT) && (args.deadtimeout > 0))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_DEAD_TIMEOUT);
+ }
+
+ /* build xdr buffer */
+ xb_init_buffer(&xb, NULL, 0);
+ xb_add_32(error, &xb, args.version);
+ argslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // args length
+ xb_add_32(error, &xb, NFS_XDRARGS_VERSION_0);
+ xb_add_bitmap(error, &xb, mattrs, NFS_MATTR_BITMAP_LEN);
+ attrslength_offset = xb_offset(&xb);
+ xb_add_32(error, &xb, 0); // attrs length
+ xb_add_bitmap(error, &xb, mflags_mask, NFS_MFLAG_BITMAP_LEN); /* mask */
+ xb_add_bitmap(error, &xb, mflags, NFS_MFLAG_BITMAP_LEN); /* value */
+ xb_add_32(error, &xb, nfsvers);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READ_SIZE))
+ xb_add_32(error, &xb, args.rsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_WRITE_SIZE))
+ xb_add_32(error, &xb, args.wsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READDIR_SIZE))
+ xb_add_32(error, &xb, args.readdirsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READAHEAD))
+ xb_add_32(error, &xb, args.readahead);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MIN)) {
+ xb_add_32(error, &xb, args.acregmin);
+ xb_add_32(error, &xb, 0);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MAX)) {
+ xb_add_32(error, &xb, args.acregmax);
+ xb_add_32(error, &xb, 0);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MIN)) {
+ xb_add_32(error, &xb, args.acdirmin);
+ xb_add_32(error, &xb, 0);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MAX)) {
+ xb_add_32(error, &xb, args.acdirmax);
+ xb_add_32(error, &xb, 0);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_LOCK_MODE))
+ xb_add_32(error, &xb, nfslockmode);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SECURITY)) {
+ uint32_t flavors[2], i=0;
+ if (args.flags & NFSMNT_SECFLAVOR)
+ flavors[i++] = args.auth;
+ if ((args.flags & NFSMNT_SECSYSOK) && ((i == 0) || (flavors[0] != RPCAUTH_SYS)))
+ flavors[i++] = RPCAUTH_SYS;
+ xb_add_word_array(error, &xb, flavors, i);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MAX_GROUP_LIST))
+ xb_add_32(error, &xb, args.maxgrouplist);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOCKET_TYPE))
+ xb_add_string(error, &xb, ((args.sotype == SOCK_DGRAM) ? "udp" : "tcp"), 3);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_PORT))
+ xb_add_32(error, &xb, ((ss.ss_family == AF_INET) ?
+ ntohs(((struct sockaddr_in*)&ss)->sin_port) :
+ ntohs(((struct sockaddr_in6*)&ss)->sin6_port)));
+ /* NFS_MATTR_MOUNT_PORT (not available in old args) */
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_REQUEST_TIMEOUT)) {
+ /* convert from .1s increments to time */
+ xb_add_32(error, &xb, args.timeo/10);
+ xb_add_32(error, &xb, (args.timeo%10)*100000000);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOFT_RETRY_COUNT))
+ xb_add_32(error, &xb, args.retrans);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_DEAD_TIMEOUT)) {
+ xb_add_32(error, &xb, args.deadtimeout);
+ xb_add_32(error, &xb, 0);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FH))
+ xb_add_fh(error, &xb, &nfh[0], args.fhsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FS_LOCATIONS)) {
+ xb_add_32(error, &xb, 1); /* fs location count */
+ xb_add_32(error, &xb, 1); /* server count */
+ xb_add_string(error, &xb, mntfrom, (endserverp - mntfrom)); /* server name */
+ xb_add_32(error, &xb, 1); /* address count */
+ xb_add_string(error, &xb, uaddr, strlen(uaddr)); /* address */
+ xb_add_32(error, &xb, 0); /* empty server info */
+ xb_add_32(error, &xb, numcomps); /* pathname component count */
+ nfsmout_if(error);
+ p = frompath;
+ while (*p && (*p == '/'))
+ p++;
+ while (*p) {
+ cp = p;
+ while (*p && (*p != '/'))
+ p++;
+ xb_add_string(error, &xb, cp, (p - cp)); /* component */
+ nfsmout_if(error);
+ while (*p && (*p == '/'))
+ p++;
+ }
+ xb_add_32(error, &xb, 0); /* empty fsl info */
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFLAGS))
+ xb_add_32(error, &xb, (vfs_flags(mp) & MNT_VISFLAGMASK)); /* VFS MNT_* flags */
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFROM))
+ xb_add_string(error, &xb, mntfrom, strlen(mntfrom)); /* fixed f_mntfromname */
+ xb_build_done(error, &xb);
+
+ /* update opaque counts */
+ end_offset = xb_offset(&xb);
+ error = xb_seek(&xb, argslength_offset);
+ xb_add_32(error, &xb, end_offset - argslength_offset + XDRWORD/*version*/);
+ nfsmout_if(error);
+ error = xb_seek(&xb, attrslength_offset);
+ xb_add_32(error, &xb, end_offset - attrslength_offset - XDRWORD/*don't include length field*/);
+
+ if (!error) {
+ /* grab the assembled buffer */
+ *xdrbufp = xb_buffer_base(&xb);
+ xb.xb_flags &= ~XB_CLEANUP;
+ }
+nfsmout:
+ xb_cleanup(&xb);
+ FREE_ZONE(mntfrom, MAXPATHLEN, M_NAMEI);
+ return (error);
+}
+
+/*
+ * VFS Operations.
+ *
+ * mount system call
+ */
+int
+nfs_vfs_mount(mount_t mp, vnode_t vp, user_addr_t data, vfs_context_t ctx)
+{
+ int error = 0, inkernel = vfs_iskernelmount(mp);
+ uint32_t argsversion, argslength;
+ char *xdrbuf = NULL;
+
+ /* read in version */
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, data), &argsversion, sizeof(argsversion));
+ else if ((error = copyin(data, &argsversion, sizeof(argsversion))))
+ return (error);
+
+ /* If we have XDR args, then all values in the buffer are in network order */
+ if (argsversion == htonl(NFS_ARGSVERSION_XDR))
+ argsversion = NFS_ARGSVERSION_XDR;
+
+ switch (argsversion) {
+ case 3:
+ case 4:
+ case 5:
+ case 6:
+ /* convert old-style args to xdr */
+ error = nfs_convert_old_nfs_args(mp, data, ctx, argsversion, inkernel, &xdrbuf);
+ break;
+ case NFS_ARGSVERSION_XDR:
+ /* copy in xdr buffer */
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, (data + XDRWORD)), &argslength, XDRWORD);
+ else
+ error = copyin((data + XDRWORD), &argslength, XDRWORD);
+ if (error)
+ break;
+ argslength = ntohl(argslength);
+ /* put a reasonable limit on the size of the XDR args */
+ if (argslength > 16*1024) {
+ error = E2BIG;
+ break;
+ }
+ /* allocate xdr buffer */
+ xdrbuf = xb_malloc(xdr_rndup(argslength));
+ if (!xdrbuf) {
+ error = ENOMEM;
+ break;
+ }
+ if (inkernel)
+ bcopy(CAST_DOWN(void *, data), xdrbuf, argslength);
+ else
+ error = copyin(data, xdrbuf, argslength);
+ break;
+ default:
+ error = EPROGMISMATCH;
+ }
+
+ if (error) {
+ if (xdrbuf)
+ xb_free(xdrbuf);
+ return (error);
+ }
+ error = mountnfs(xdrbuf, mp, ctx, &vp);
+ return (error);
+}
+
+/*
+ * Common code for mount and mountroot
+ */
+
+/* Set up an NFSv2/v3 mount */
+int
+nfs3_mount(
+ struct nfsmount *nmp,
+ vfs_context_t ctx,
+ nfsnode_t *npp)
+{
+ int error = 0;
+ struct nfs_vattr nvattr;
+ u_int64_t xid;
+
+ *npp = NULL;
+
+ if (!nmp->nm_fh)
+ return (EINVAL);
+
+ /*
+ * Get file attributes for the mountpoint. These are needed
+ * in order to properly create the root vnode.
+ */
+ error = nfs3_getattr_rpc(NULL, nmp->nm_mountp, nmp->nm_fh->fh_data, nmp->nm_fh->fh_len, 0,
+ ctx, &nvattr, &xid);
+ if (error)
+ goto out;
+
+ error = nfs_nget(nmp->nm_mountp, NULL, NULL, nmp->nm_fh->fh_data, nmp->nm_fh->fh_len,
+ &nvattr, &xid, RPCAUTH_UNKNOWN, NG_MARKROOT, npp);
+ if (*npp)
+ nfs_node_unlock(*npp);
+ if (error)
+ goto out;
/*
- * turning off NQNFS until we have further testing
- * with UBC changes, in particular, nfs_pagein and nfs_pageout.
- * Those have NQNFS defined out in conjunction with this
- * returning an error. Remove when fully tested.
+ * Try to make sure we have all the general info from the server.
*/
- if (argp->flags & NFSMNT_NQNFS) {
- error = NFSERR_NOTSUPP;
- goto bad2;
+ if (nmp->nm_vers == NFS_VER2) {
+ NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXNAME);
+ nmp->nm_fsattr.nfsa_maxname = NFS_MAXNAMLEN;
+ } else if (nmp->nm_vers == NFS_VER3) {
+ /* get the NFSv3 FSINFO */
+ error = nfs3_fsinfo(nmp, *npp, ctx);
+ if (error)
+ goto out;
+ /* If the server indicates all pathconf info is */
+ /* the same, grab a copy of that info now */
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_HOMOGENEOUS) &&
+ (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_HOMOGENEOUS)) {
+ struct nfs_fsattr nfsa;
+ if (!nfs3_pathconf_rpc(*npp, &nfsa, ctx)) {
+ /* cache a copy of the results */
+ lck_mtx_lock(&nmp->nm_lock);
+ nfs3_pathconf_cache(nmp, &nfsa);
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ }
+ }
+out:
+ if (*npp && error) {
+ vnode_put(NFSTOV(*npp));
+ vnode_recycle(NFSTOV(*npp));
+ *npp = NULL;
+ }
+ return (error);
+}
+
+/*
+ * Update an NFSv4 mount path with the contents of the symlink.
+ *
+ * Read the link for the given file handle.
+ * Insert the link's components into the path.
+ */
+int
+nfs4_mount_update_path_with_symlink(struct nfsmount *nmp, struct nfs_fs_path *nfsp, uint32_t curcomp, fhandle_t *dirfhp, int *depthp, fhandle_t *fhp, vfs_context_t ctx)
+{
+ int error = 0, status, numops;
+ uint32_t len = 0, comp, newcomp, linkcompcount;
+ u_int64_t xid;
+ struct nfsm_chain nmreq, nmrep;
+ struct nfsreq rq, *req = &rq;
+ struct nfsreq_secinfo_args si;
+ char *link = NULL, *p, *q, ch;
+ struct nfs_fs_path nfsp2;
+
+ bzero(&nfsp2, sizeof(nfsp2));
+ if (dirfhp->fh_len)
+ NFSREQ_SECINFO_SET(&si, NULL, dirfhp->fh_data, dirfhp->fh_len, nfsp->np_components[curcomp], 0);
+ else
+ NFSREQ_SECINFO_SET(&si, NULL, NULL, 0, nfsp->np_components[curcomp], 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ MALLOC_ZONE(link, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
+ if (!link)
+ error = ENOMEM;
+
+ // PUTFH, READLINK
+ numops = 2;
+ nfsm_chain_build_alloc_init(error, &nmreq, 12 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "readlink", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, fhp->fh_data, fhp->fh_len);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_READLINK);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+
+ error = nfs_request_async(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error)
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_READLINK);
+ nfsm_chain_get_32(error, &nmrep, len);
+ nfsmout_if(error);
+ if (len == 0)
+ error = ENOENT;
+ else if (len >= MAXPATHLEN)
+ len = MAXPATHLEN - 1;
+ nfsm_chain_get_opaque(error, &nmrep, len, link);
+ nfsmout_if(error);
+ /* make sure link string is terminated properly */
+ link[len] = '\0';
+
+ /* count the number of components in link */
+ p = link;
+ while (*p && (*p == '/'))
+ p++;
+ linkcompcount = 0;
+ while (*p) {
+ linkcompcount++;
+ while (*p && (*p != '/'))
+ p++;
+ while (*p && (*p == '/'))
+ p++;
+ }
+
+ /* free up used components */
+ for (comp=0; comp <= curcomp; comp++) {
+ if (nfsp->np_components[comp]) {
+ FREE(nfsp->np_components[comp], M_TEMP);
+ nfsp->np_components[comp] = NULL;
+ }
+ }
+
+ /* set up new path */
+ nfsp2.np_compcount = nfsp->np_compcount - curcomp - 1 + linkcompcount;
+ MALLOC(nfsp2.np_components, char **, nfsp2.np_compcount*sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!nfsp2.np_components) {
+ error = ENOMEM;
+ goto nfsmout;
+ }
+
+ /* add link components */
+ p = link;
+ while (*p && (*p == '/'))
+ p++;
+ for (newcomp=0; newcomp < linkcompcount; newcomp++) {
+ /* find end of component */
+ q = p;
+ while (*q && (*q != '/'))
+ q++;
+ MALLOC(nfsp2.np_components[newcomp], char *, q-p+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!nfsp2.np_components[newcomp]) {
+ error = ENOMEM;
+ break;
+ }
+ ch = *q;
+ *q = '\0';
+ strlcpy(nfsp2.np_components[newcomp], p, q-p+1);
+ *q = ch;
+ p = q;
+ while (*p && (*p == '/'))
+ p++;
+ }
+ nfsmout_if(error);
+
+ /* add remaining components */
+ for(comp = curcomp + 1; comp < nfsp->np_compcount; comp++,newcomp++) {
+ nfsp2.np_components[newcomp] = nfsp->np_components[comp];
+ nfsp->np_components[comp] = NULL;
+ }
+
+ /* move new path into place */
+ FREE(nfsp->np_components, M_TEMP);
+ nfsp->np_components = nfsp2.np_components;
+ nfsp->np_compcount = nfsp2.np_compcount;
+ nfsp2.np_components = NULL;
+
+ /* for absolute link, let the caller now that the next dirfh is root */
+ if (link[0] == '/') {
+ dirfhp->fh_len = 0;
+ *depthp = 0;
+ }
+nfsmout:
+ if (link)
+ FREE_ZONE(link, MAXPATHLEN, M_NAMEI);
+ if (nfsp2.np_components) {
+ for (comp=0; comp < nfsp2.np_compcount; comp++)
+ if (nfsp2.np_components[comp])
+ FREE(nfsp2.np_components[comp], M_TEMP);
+ FREE(nfsp2.np_components, M_TEMP);
+ }
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/* Set up an NFSv4 mount */
+int
+nfs4_mount(
+ struct nfsmount *nmp,
+ vfs_context_t ctx,
+ nfsnode_t *npp)
+{
+ struct nfsm_chain nmreq, nmrep;
+ int error = 0, numops, status, interval, isdotdot, loopcnt = 0, depth = 0;
+ struct nfs_fs_path fspath, *nfsp, fspath2;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN], comp, comp2;
+ fhandle_t fh, dirfh;
+ struct nfs_vattr nvattr;
+ u_int64_t xid;
+ struct nfsreq rq, *req = &rq;
+ struct nfsreq_secinfo_args si;
+ struct nfs_sec sec;
+ struct nfs_fs_locations nfsls;
+
+ *npp = NULL;
+ fh.fh_len = dirfh.fh_len = 0;
+ TAILQ_INIT(&nmp->nm_open_owners);
+ TAILQ_INIT(&nmp->nm_delegations);
+ TAILQ_INIT(&nmp->nm_dreturnq);
+ nmp->nm_stategenid = 1;
+ NVATTR_INIT(&nvattr);
+ bzero(&nfsls, sizeof(nfsls));
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ /*
+ * If no security flavors were specified we'll want to default to the server's
+ * preferred flavor. For NFSv4.0 we need a file handle and name to get that via
+ * SECINFO, so we'll do that on the last component of the server path we are
+ * mounting. If we are mounting the server's root, we'll need to defer the
+ * SECINFO call to the first successful LOOKUP request.
+ */
+ if (!nmp->nm_sec.count)
+ nmp->nm_state |= NFSSTA_NEEDSECINFO;
+
+ /* make a copy of the current location's path */
+ nfsp = &nmp->nm_locations.nl_locations[nmp->nm_locations.nl_current.nli_loc]->nl_path;
+ bzero(&fspath, sizeof(fspath));
+ fspath.np_compcount = nfsp->np_compcount;
+ if (fspath.np_compcount > 0) {
+ MALLOC(fspath.np_components, char **, fspath.np_compcount*sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fspath.np_components) {
+ error = ENOMEM;
+ goto nfsmout;
+ }
+ for (comp=0; comp < nfsp->np_compcount; comp++) {
+ int slen = strlen(nfsp->np_components[comp]);
+ MALLOC(fspath.np_components[comp], char *, slen+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!fspath.np_components[comp]) {
+ error = ENOMEM;
+ break;
+ }
+ strlcpy(fspath.np_components[comp], nfsp->np_components[comp], slen+1);
+ }
+ if (error)
+ goto nfsmout;
+ }
+
+ /* for mirror mounts, we can just use the file handle passed in */
+ if (nmp->nm_fh) {
+ dirfh.fh_len = nmp->nm_fh->fh_len;
+ bcopy(nmp->nm_fh->fh_data, dirfh.fh_data, dirfh.fh_len);
+ NFSREQ_SECINFO_SET(&si, NULL, dirfh.fh_data, dirfh.fh_len, NULL, 0);
+ goto gotfh;
+ }
+
+ /* otherwise, we need to get the fh for the directory we are mounting */
+
+ /* if no components, just get root */
+ if (fspath.np_compcount == 0) {
+nocomponents:
+ // PUTROOTFH + GETATTR(FH)
+ NFSREQ_SECINFO_SET(&si, NULL, NULL, 0, NULL, 0);
+ numops = 2;
+ nfsm_chain_build_alloc_init(error, &nmreq, 9 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "mount", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTROOTFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_CLEAR_ATTRIBUTES(bitmap);
+ NFS4_DEFAULT_ATTRIBUTES(bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
+ nfsm_chain_add_bitmap(error, &nmreq, bitmap, NFS_ATTR_BITMAP_LEN);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request_async(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error)
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTROOTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ NFS_CLEAR_ATTRIBUTES(nmp->nm_fsattr.nfsa_bitmap);
+ error = nfs4_parsefattr(&nmrep, &nmp->nm_fsattr, &nvattr, &dirfh, NULL, NULL);
+ if (!error && !NFS_BITMAP_ISSET(&nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
+ printf("nfs: mount didn't return filehandle?\n");
+ error = EBADRPC;
+ }
+ nfsmout_if(error);
+ nfsm_chain_cleanup(&nmrep);
+ nfsm_chain_null(&nmreq);
+ NVATTR_CLEANUP(&nvattr);
+ goto gotfh;
+ }
+
+ /* look up each path component */
+ for (comp=0; comp < fspath.np_compcount; ) {
+ isdotdot = 0;
+ if (fspath.np_components[comp][0] == '.') {
+ if (fspath.np_components[comp][1] == '\0') {
+ /* skip "." */
+ comp++;
+ continue;
+ }
+ /* treat ".." specially */
+ if ((fspath.np_components[comp][1] == '.') &&
+ (fspath.np_components[comp][2] == '\0'))
+ isdotdot = 1;
+ if (isdotdot && (dirfh.fh_len == 0)) {
+ /* ".." in root directory is same as "." */
+ comp++;
+ continue;
+ }
+ }
+ // PUT(ROOT)FH + LOOKUP(P) + GETFH + GETATTR
+ if (dirfh.fh_len == 0)
+ NFSREQ_SECINFO_SET(&si, NULL, NULL, 0, isdotdot ? NULL : fspath.np_components[comp], 0);
+ else
+ NFSREQ_SECINFO_SET(&si, NULL, dirfh.fh_data, dirfh.fh_len, isdotdot ? NULL : fspath.np_components[comp], 0);
+ numops = 4;
+ nfsm_chain_build_alloc_init(error, &nmreq, 18 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "mount", nmp->nm_minor_vers, numops);
+ numops--;
+ if (dirfh.fh_len) {
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, dirfh.fh_data, dirfh.fh_len);
+ } else {
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTROOTFH);
+ }
+ numops--;
+ if (isdotdot) {
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUPP);
+ } else {
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
+ nfsm_chain_add_name(error, &nmreq,
+ fspath.np_components[comp], strlen(fspath.np_components[comp]), nmp);
+ }
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETFH);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_CLEAR_ATTRIBUTES(bitmap);
+ NFS4_DEFAULT_ATTRIBUTES(bitmap);
+ /* if no namedattr support or component is ".zfs", clear NFS_FATTR_NAMED_ATTR */
+ if (!NMFLAG(nmp, NAMEDATTR) || !strcmp(fspath.np_components[comp], ".zfs"))
+ NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
+ nfsm_chain_add_bitmap(error, &nmreq, bitmap, NFS_ATTR_BITMAP_LEN);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request_async(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error)
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, dirfh.fh_len ? NFS_OP_PUTFH : NFS_OP_PUTROOTFH);
+ nfsm_chain_op_check(error, &nmrep, isdotdot ? NFS_OP_LOOKUPP : NFS_OP_LOOKUP);
+ nfsmout_if(error);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETFH);
+ nfsm_chain_get_32(error, &nmrep, fh.fh_len);
+ nfsm_chain_get_opaque(error, &nmrep, fh.fh_len, fh.fh_data);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ if (!error) {
+ NFS_CLEAR_ATTRIBUTES(nmp->nm_fsattr.nfsa_bitmap);
+ error = nfs4_parsefattr(&nmrep, &nmp->nm_fsattr, &nvattr, NULL, NULL, &nfsls);
+ }
+ nfsm_chain_cleanup(&nmrep);
+ nfsm_chain_null(&nmreq);
+ if (error) {
+ /* LOOKUP succeeded but GETATTR failed? This could be a referral. */
+ /* Try the lookup again with a getattr for fs_locations. */
+ nfs_fs_locations_cleanup(&nfsls);
+ error = nfs4_get_fs_locations(nmp, NULL, dirfh.fh_data, dirfh.fh_len, fspath.np_components[comp], ctx, &nfsls);
+ if (!error && (nfsls.nl_numlocs < 1))
+ error = ENOENT;
+ nfsmout_if(error);
+ if (++loopcnt > MAXSYMLINKS) {
+ /* too many symlink/referral redirections */
+ error = ELOOP;
+ goto nfsmout;
+ }
+ /* tear down the current connection */
+ nfs_disconnect(nmp);
+ /* replace fs locations */
+ nfs_fs_locations_cleanup(&nmp->nm_locations);
+ nmp->nm_locations = nfsls;
+ bzero(&nfsls, sizeof(nfsls));
+ /* initiate a connection using the new fs locations */
+ error = nfs_mount_connect(nmp);
+ if (!error && !(nmp->nm_locations.nl_current.nli_flags & NLI_VALID))
+ error = EIO;
+ nfsmout_if(error);
+ /* add new server's remote path to beginning of our path and continue */
+ nfsp = &nmp->nm_locations.nl_locations[nmp->nm_locations.nl_current.nli_loc]->nl_path;
+ bzero(&fspath2, sizeof(fspath2));
+ fspath2.np_compcount = (fspath.np_compcount - comp - 1) + nfsp->np_compcount;
+ if (fspath2.np_compcount > 0) {
+ MALLOC(fspath2.np_components, char **, fspath2.np_compcount*sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fspath2.np_components) {
+ error = ENOMEM;
+ goto nfsmout;
+ }
+ for (comp2=0; comp2 < nfsp->np_compcount; comp2++) {
+ int slen = strlen(nfsp->np_components[comp2]);
+ MALLOC(fspath2.np_components[comp2], char *, slen+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!fspath2.np_components[comp2]) {
+ /* clean up fspath2, then error out */
+ while (comp2 > 0) {
+ comp2--;
+ FREE(fspath2.np_components[comp2], M_TEMP);
+ }
+ FREE(fspath2.np_components, M_TEMP);
+ error = ENOMEM;
+ goto nfsmout;
+ }
+ strlcpy(fspath2.np_components[comp2], nfsp->np_components[comp2], slen+1);
+ }
+ if ((fspath.np_compcount - comp - 1) > 0)
+ bcopy(&fspath.np_components[comp+1], &fspath2.np_components[nfsp->np_compcount], (fspath.np_compcount - comp - 1)*sizeof(char*));
+ /* free up unused parts of old path (prior components and component array) */
+ do {
+ FREE(fspath.np_components[comp], M_TEMP);
+ } while (comp-- > 0);
+ FREE(fspath.np_components, M_TEMP);
+ /* put new path in place */
+ fspath = fspath2;
+ }
+ /* reset dirfh and component index */
+ dirfh.fh_len = 0;
+ comp = 0;
+ NVATTR_CLEANUP(&nvattr);
+ if (fspath.np_compcount == 0)
+ goto nocomponents;
+ continue;
+ }
+ nfsmout_if(error);
+ /* if file handle is for a symlink, then update the path with the symlink contents */
+ if (NFS_BITMAP_ISSET(&nvattr.nva_bitmap, NFS_FATTR_TYPE) && (nvattr.nva_type == VLNK)) {
+ if (++loopcnt > MAXSYMLINKS)
+ error = ELOOP;
+ else
+ error = nfs4_mount_update_path_with_symlink(nmp, &fspath, comp, &dirfh, &depth, &fh, ctx);
+ nfsmout_if(error);
+ /* directory file handle is either left the same or reset to root (if link was absolute) */
+ /* path traversal starts at beginning of the path again */
+ comp = 0;
+ NVATTR_CLEANUP(&nvattr);
+ nfs_fs_locations_cleanup(&nfsls);
+ continue;
+ }
+ NVATTR_CLEANUP(&nvattr);
+ nfs_fs_locations_cleanup(&nfsls);
+ /* not a symlink... */
+ if ((nmp->nm_state & NFSSTA_NEEDSECINFO) && (comp == (fspath.np_compcount-1)) && !isdotdot) {
+ /* need to get SECINFO for the directory being mounted */
+ if (dirfh.fh_len == 0)
+ NFSREQ_SECINFO_SET(&si, NULL, NULL, 0, isdotdot ? NULL : fspath.np_components[comp], 0);
+ else
+ NFSREQ_SECINFO_SET(&si, NULL, dirfh.fh_data, dirfh.fh_len, isdotdot ? NULL : fspath.np_components[comp], 0);
+ sec.count = NX_MAX_SEC_FLAVORS;
+ error = nfs4_secinfo_rpc(nmp, &si, vfs_context_ucred(ctx), sec.flavors, &sec.count);
+ /* [sigh] some implementations return "illegal" error for unsupported ops */
+ if (error == NFSERR_OP_ILLEGAL)
+ error = 0;
+ nfsmout_if(error);
+ /* set our default security flavor to the first in the list */
+ if (sec.count)
+ nmp->nm_auth = sec.flavors[0];
+ nmp->nm_state &= ~NFSSTA_NEEDSECINFO;
+ }
+ /* advance directory file handle, component index, & update depth */
+ dirfh = fh;
+ comp++;
+ if (!isdotdot) /* going down the hierarchy */
+ depth++;
+ else if (--depth <= 0) /* going up the hierarchy */
+ dirfh.fh_len = 0; /* clear dirfh when we hit root */
+ }
+
+gotfh:
+ /* get attrs for mount point root */
+ numops = NMFLAG(nmp, NAMEDATTR) ? 3 : 2; // PUTFH + GETATTR + OPENATTR
+ nfsm_chain_build_alloc_init(error, &nmreq, 25 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "mount", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, NFS_VER4, dirfh.fh_data, dirfh.fh_len);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_CLEAR_ATTRIBUTES(bitmap);
+ NFS4_DEFAULT_ATTRIBUTES(bitmap);
+ /* if no namedattr support or last component is ".zfs", clear NFS_FATTR_NAMED_ATTR */
+ if (!NMFLAG(nmp, NAMEDATTR) || ((fspath.np_compcount > 0) && !strcmp(fspath.np_components[fspath.np_compcount-1], ".zfs")))
+ NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
+ nfsm_chain_add_bitmap(error, &nmreq, bitmap, NFS_ATTR_BITMAP_LEN);
+ if (NMFLAG(nmp, NAMEDATTR)) {
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
+ nfsm_chain_add_32(error, &nmreq, 0);
+ }
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request_async(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
+ vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
+ if (!error)
+ error = nfs_request_async_finish(req, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsmout_if(error);
+ NFS_CLEAR_ATTRIBUTES(nmp->nm_fsattr.nfsa_bitmap);
+ error = nfs4_parsefattr(&nmrep, &nmp->nm_fsattr, &nvattr, NULL, NULL, NULL);
+ nfsmout_if(error);
+ if (NMFLAG(nmp, NAMEDATTR)) {
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
+ if (error == ENOENT)
+ error = 0;
+ /* [sigh] some implementations return "illegal" error for unsupported ops */
+ if (error || !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_NAMED_ATTR)) {
+ nmp->nm_fsattr.nfsa_flags &= ~NFS_FSFLAG_NAMED_ATTR;
+ } else {
+ nmp->nm_fsattr.nfsa_flags |= NFS_FSFLAG_NAMED_ATTR;
+ }
+ } else {
+ nmp->nm_fsattr.nfsa_flags &= ~NFS_FSFLAG_NAMED_ATTR;
+ }
+ if (NMFLAG(nmp, NOACL)) /* make sure ACL support is turned off */
+ nmp->nm_fsattr.nfsa_flags &= ~NFS_FSFLAG_ACL;
+ if (NMFLAG(nmp, ACLONLY) && !(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL))
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_ACLONLY);
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_FH_EXPIRE_TYPE)) {
+ uint32_t fhtype = ((nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_FHTYPE_MASK) >> NFS_FSFLAG_FHTYPE_SHIFT);
+ if (fhtype != NFS_FH_PERSISTENT)
+ printf("nfs: warning: non-persistent file handles! for %s\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname);
+ }
+
+ /* make sure it's a directory */
+ if (!NFS_BITMAP_ISSET(&nvattr.nva_bitmap, NFS_FATTR_TYPE) || (nvattr.nva_type != VDIR)) {
+ error = ENOTDIR;
+ goto nfsmout;
+ }
+
+ /* save the NFS fsid */
+ nmp->nm_fsid = nvattr.nva_fsid;
+
+ /* create the root node */
+ error = nfs_nget(nmp->nm_mountp, NULL, NULL, dirfh.fh_data, dirfh.fh_len, &nvattr, &xid, rq.r_auth, NG_MARKROOT, npp);
+ nfsmout_if(error);
+
+ if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL)
+ vfs_setextendedsecurity(nmp->nm_mountp);
+
+ /* adjust I/O sizes to server limits */
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXREAD) && (nmp->nm_fsattr.nfsa_maxread > 0)) {
+ if (nmp->nm_fsattr.nfsa_maxread < (uint64_t)nmp->nm_rsize) {
+ nmp->nm_rsize = nmp->nm_fsattr.nfsa_maxread & ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_rsize == 0)
+ nmp->nm_rsize = nmp->nm_fsattr.nfsa_maxread;
+ }
+ }
+ if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXWRITE) && (nmp->nm_fsattr.nfsa_maxwrite > 0)) {
+ if (nmp->nm_fsattr.nfsa_maxwrite < (uint64_t)nmp->nm_wsize) {
+ nmp->nm_wsize = nmp->nm_fsattr.nfsa_maxwrite & ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_wsize == 0)
+ nmp->nm_wsize = nmp->nm_fsattr.nfsa_maxwrite;
+ }
+ }
+
+ /* set up lease renew timer */
+ nmp->nm_renew_timer = thread_call_allocate(nfs4_renew_timer, nmp);
+ interval = nmp->nm_fsattr.nfsa_lease / 2;
+ if (interval < 1)
+ interval = 1;
+ nfs_interval_timer_start(nmp->nm_renew_timer, interval * 1000);
+
+nfsmout:
+ if (fspath.np_components) {
+ for (comp=0; comp < fspath.np_compcount; comp++)
+ if (fspath.np_components[comp])
+ FREE(fspath.np_components[comp], M_TEMP);
+ FREE(fspath.np_components, M_TEMP);
+ }
+ NVATTR_CLEANUP(&nvattr);
+ nfs_fs_locations_cleanup(&nfsls);
+ if (*npp)
+ nfs_node_unlock(*npp);
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+/*
+ * Thread to handle initial NFS mount connection.
+ */
+void
+nfs_mount_connect_thread(void *arg, __unused wait_result_t wr)
+{
+ struct nfsmount *nmp = arg;
+ int error = 0, savederror = 0, slpflag = (NMFLAG(nmp, INTR) ? PCATCH : 0);
+ int done = 0, timeo, tries, maxtries;
+
+ if (NM_OMFLAG(nmp, MNTQUICK)) {
+ timeo = 8;
+ maxtries = 1;
+ } else {
+ timeo = 30;
+ maxtries = 2;
+ }
+
+ for (tries = 0; tries < maxtries; tries++) {
+ error = nfs_connect(nmp, 1, timeo);
+ switch (error) {
+ case ETIMEDOUT:
+ case EAGAIN:
+ case EPIPE:
+ case EADDRNOTAVAIL:
+ case ENETDOWN:
+ case ENETUNREACH:
+ case ENETRESET:
+ case ECONNABORTED:
+ case ECONNRESET:
+ case EISCONN:
+ case ENOTCONN:
+ case ESHUTDOWN:
+ case ECONNREFUSED:
+ case EHOSTDOWN:
+ case EHOSTUNREACH:
+ /* just keep retrying on any of these errors */
+ break;
+ case 0:
+ default:
+ /* looks like we got an answer... */
+ done = 1;
+ break;
+ }
+
+ /* save the best error */
+ if (nfs_connect_error_class(error) >= nfs_connect_error_class(savederror))
+ savederror = error;
+ if (done) {
+ error = savederror;
+ break;
+ }
+
+ /* pause before next attempt */
+ if ((error = nfs_sigintr(nmp, NULL, current_thread(), 0)))
+ break;
+ error = tsleep(nmp, PSOCK|slpflag, "nfs_mount_connect_retry", 2*hz);
+ if (error && (error != EWOULDBLOCK))
+ break;
+ error = savederror;
+ }
+
+ /* update status of mount connect */
+ lck_mtx_lock(&nmp->nm_lock);
+ if (!nmp->nm_mounterror)
+ nmp->nm_mounterror = error;
+ nmp->nm_state &= ~NFSSTA_MOUNT_THREAD;
+ lck_mtx_unlock(&nmp->nm_lock);
+ wakeup(&nmp->nm_nss);
+}
+
+int
+nfs_mount_connect(struct nfsmount *nmp)
+{
+ int error = 0, slpflag;
+ thread_t thd;
+ struct timespec ts = { 2, 0 };
+
+ /*
+ * Set up the socket. Perform initial search for a location/server/address to
+ * connect to and negotiate any unspecified mount parameters. This work is
+ * done on a kernel thread to satisfy reserved port usage needs.
+ */
+ slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
+ lck_mtx_lock(&nmp->nm_lock);
+ /* set flag that the thread is running */
+ nmp->nm_state |= NFSSTA_MOUNT_THREAD;
+ if (kernel_thread_start(nfs_mount_connect_thread, nmp, &thd) != KERN_SUCCESS) {
+ nmp->nm_state &= ~NFSSTA_MOUNT_THREAD;
+ nmp->nm_mounterror = EIO;
+ printf("nfs mount %s start socket connect thread failed\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname);
+ } else {
+ thread_deallocate(thd);
+ }
+
+ /* wait until mount connect thread is finished/gone */
+ while (nmp->nm_state & NFSSTA_MOUNT_THREAD) {
+ error = msleep(&nmp->nm_nss, &nmp->nm_lock, slpflag|PSOCK, "nfsconnectthread", &ts);
+ if ((error && (error != EWOULDBLOCK)) || ((error = nfs_sigintr(nmp, NULL, current_thread(), 1)))) {
+ /* record error */
+ if (!nmp->nm_mounterror)
+ nmp->nm_mounterror = error;
+ /* signal the thread that we are aborting */
+ nmp->nm_sockflags |= NMSOCK_UNMOUNT;
+ if (nmp->nm_nss)
+ wakeup(nmp->nm_nss);
+ /* and continue waiting on it to finish */
+ slpflag = 0;
+ }
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /* grab mount connect status */
+ error = nmp->nm_mounterror;
+
+ return (error);
+}
+
+/* Table of maximum minor version for a given version */
+uint32_t maxminorverstab[] = {
+ 0, /* Version 0 (does not exist) */
+ 0, /* Version 1 (does not exist) */
+ 0, /* Version 2 */
+ 0, /* Version 3 */
+ 0, /* Version 4 */
+};
+
+#define NFS_MAX_SUPPORTED_VERSION ((long)(sizeof (maxminorverstab) / sizeof (uint32_t) - 1))
+#define NFS_MAX_SUPPORTED_MINOR_VERSION(v) ((long)(maxminorverstab[(v)]))
+
+#define DEFAULT_NFS_MIN_VERS VER2PVER(2, 0)
+#define DEFAULT_NFS_MAX_VERS VER2PVER(3, 0)
+
+/*
+ * Common code to mount an NFS file system.
+ */
+int
+mountnfs(
+ char *xdrbuf,
+ mount_t mp,
+ vfs_context_t ctx,
+ vnode_t *vpp)
+{
+ struct nfsmount *nmp;
+ nfsnode_t np;
+ int error = 0;
+ struct vfsstatfs *sbp;
+ struct xdrbuf xb;
+ uint32_t i, val, maxio, iosize, len;
+ uint32_t *mattrs;
+ uint32_t *mflags_mask;
+ uint32_t *mflags;
+ uint32_t argslength, attrslength;
+ struct nfs_location_index firstloc = { NLI_VALID, 0, 0, 0 };
+ static const struct nfs_etype nfs_default_etypes = {
+ .count = NFS_MAX_ETYPES,
+ .selected = NFS_MAX_ETYPES,
+ .etypes = { NFS_AES256_CTS_HMAC_SHA1_96,
+ NFS_AES128_CTS_HMAC_SHA1_96,
+ NFS_DES3_CBC_SHA1_KD
+ }
+ };
+ /* make sure mbuf constants are set up */
+ if (!nfs_mbuf_mhlen)
+ nfs_mbuf_init();
+
+ if (vfs_flags(mp) & MNT_UPDATE) {
+ nmp = VFSTONFS(mp);
+ /* update paths, file handles, etc, here XXX */
+ xb_free(xdrbuf);
+ return (0);
+ } else {
+ /* allocate an NFS mount structure for this mount */
+ MALLOC_ZONE(nmp, struct nfsmount *,
+ sizeof (struct nfsmount), M_NFSMNT, M_WAITOK);
+ if (!nmp) {
+ xb_free(xdrbuf);
+ return (ENOMEM);
+ }
+ bzero((caddr_t)nmp, sizeof (struct nfsmount));
+ lck_mtx_init(&nmp->nm_lock, nfs_mount_grp, LCK_ATTR_NULL);
+ TAILQ_INIT(&nmp->nm_resendq);
+ TAILQ_INIT(&nmp->nm_iodq);
+ TAILQ_INIT(&nmp->nm_gsscl);
+ LIST_INIT(&nmp->nm_monlist);
+ vfs_setfsprivate(mp, nmp);
+ vfs_getnewfsid(mp);
+ nmp->nm_mountp = mp;
+ vfs_setauthopaque(mp);
+ /*
+ * Disable cache_lookup_path for NFS. NFS lookup always needs
+ * to be called to check if the directory attribute cache is
+ * valid and possibly purge the directory before calling
+ * cache_lookup.
+ */
+ vfs_setauthcache_ttl(mp, 0);
+
+ nfs_nhinit_finish();
+
+ nmp->nm_args = xdrbuf;
+
+ /* set up defaults */
+ nmp->nm_ref = 0;
+ nmp->nm_vers = 0;
+ nmp->nm_min_vers = DEFAULT_NFS_MIN_VERS;
+ nmp->nm_max_vers = DEFAULT_NFS_MAX_VERS;
+ nmp->nm_timeo = NFS_TIMEO;
+ nmp->nm_retry = NFS_RETRANS;
+ nmp->nm_sotype = 0;
+ nmp->nm_sofamily = 0;
+ nmp->nm_nfsport = 0;
+ nmp->nm_wsize = NFS_WSIZE;
+ nmp->nm_rsize = NFS_RSIZE;
+ nmp->nm_readdirsize = NFS_READDIRSIZE;
+ nmp->nm_numgrps = NFS_MAXGRPS;
+ nmp->nm_readahead = NFS_DEFRAHEAD;
+ nmp->nm_tprintf_delay = nfs_tprintf_delay;
+ if (nmp->nm_tprintf_delay < 0)
+ nmp->nm_tprintf_delay = 0;
+ nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
+ if (nmp->nm_tprintf_initial_delay < 0)
+ nmp->nm_tprintf_initial_delay = 0;
+ nmp->nm_acregmin = NFS_MINATTRTIMO;
+ nmp->nm_acregmax = NFS_MAXATTRTIMO;
+ nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
+ nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
+ nmp->nm_etype = nfs_default_etypes;
+ nmp->nm_auth = RPCAUTH_SYS;
+ nmp->nm_iodlink.tqe_next = NFSNOLIST;
+ nmp->nm_deadtimeout = 0;
+ nmp->nm_curdeadtimeout = 0;
+ NFS_BITMAP_SET(nmp->nm_flags, NFS_MFLAG_NOACL);
+ nmp->nm_realm = NULL;
+ nmp->nm_principal = NULL;
+ nmp->nm_sprinc = NULL;
+ }
+
+ mattrs = nmp->nm_mattrs;
+ mflags = nmp->nm_mflags;
+ mflags_mask = nmp->nm_mflags_mask;
+
+ /* set up NFS mount with args */
+ xb_init_buffer(&xb, xdrbuf, 2*XDRWORD);
+ xb_get_32(error, &xb, val); /* version */
+ xb_get_32(error, &xb, argslength); /* args length */
+ nfsmerr_if(error);
+ xb_init_buffer(&xb, xdrbuf, argslength); /* restart parsing with actual buffer length */
+ xb_get_32(error, &xb, val); /* version */
+ xb_get_32(error, &xb, argslength); /* args length */
+ xb_get_32(error, &xb, val); /* XDR args version */
+ if (val != NFS_XDRARGS_VERSION_0)
+ error = EINVAL;
+ len = NFS_MATTR_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, mattrs, len); /* mount attribute bitmap */
+ attrslength = 0;
+ xb_get_32(error, &xb, attrslength); /* attrs length */
+ if (!error && (attrslength > (argslength - ((4+NFS_MATTR_BITMAP_LEN+1)*XDRWORD))))
+ error = EINVAL;
+ nfsmerr_if(error);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FLAGS)) {
+ len = NFS_MFLAG_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, mflags_mask, len); /* mount flag mask */
+ len = NFS_MFLAG_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, mflags, len); /* mount flag values */
+ if (!error) {
+ /* clear all mask bits and OR in all the ones that are set */
+ nmp->nm_flags[0] &= ~mflags_mask[0];
+ nmp->nm_flags[0] |= (mflags_mask[0] & mflags[0]);
+ }
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION)) {
+ /* Can't specify a single version and a range */
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION_RANGE))
+ error = EINVAL;
+ xb_get_32(error, &xb, nmp->nm_vers);
+ if (nmp->nm_vers > NFS_MAX_SUPPORTED_VERSION ||
+ nmp->nm_vers < NFS_VER2)
+ error = EINVAL;
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_MINOR_VERSION))
+ xb_get_32(error, &xb, nmp->nm_minor_vers);
+ else
+ nmp->nm_minor_vers = maxminorverstab[nmp->nm_vers];
+ if (nmp->nm_minor_vers > maxminorverstab[nmp->nm_vers])
+ error = EINVAL;
+ nmp->nm_max_vers = nmp->nm_min_vers =
+ VER2PVER(nmp->nm_vers, nmp->nm_minor_vers);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_MINOR_VERSION)) {
+ /* should have also gotten NFS version (and already gotten minor version) */
+ if (!NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION))
+ error = EINVAL;
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION_RANGE)) {
+ xb_get_32(error, &xb, nmp->nm_min_vers);
+ xb_get_32(error, &xb, nmp->nm_max_vers);
+ if ((nmp->nm_min_vers > nmp->nm_max_vers) ||
+ (PVER2MAJOR(nmp->nm_max_vers) > NFS_MAX_SUPPORTED_VERSION) ||
+ (PVER2MINOR(nmp->nm_min_vers) > maxminorverstab[PVER2MAJOR(nmp->nm_min_vers)]) ||
+ (PVER2MINOR(nmp->nm_max_vers) > maxminorverstab[PVER2MAJOR(nmp->nm_max_vers)]))
+ error = EINVAL;
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READ_SIZE))
+ xb_get_32(error, &xb, nmp->nm_rsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_WRITE_SIZE))
+ xb_get_32(error, &xb, nmp->nm_wsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READDIR_SIZE))
+ xb_get_32(error, &xb, nmp->nm_readdirsize);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READAHEAD))
+ xb_get_32(error, &xb, nmp->nm_readahead);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MIN)) {
+ xb_get_32(error, &xb, nmp->nm_acregmin);
+ xb_skip(error, &xb, XDRWORD);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MAX)) {
+ xb_get_32(error, &xb, nmp->nm_acregmax);
+ xb_skip(error, &xb, XDRWORD);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MIN)) {
+ xb_get_32(error, &xb, nmp->nm_acdirmin);
+ xb_skip(error, &xb, XDRWORD);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MAX)) {
+ xb_get_32(error, &xb, nmp->nm_acdirmax);
+ xb_skip(error, &xb, XDRWORD);
+ }
+ nfsmerr_if(error);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_LOCK_MODE)) {
+ xb_get_32(error, &xb, val);
+ switch (val) {
+ case NFS_LOCK_MODE_DISABLED:
+ case NFS_LOCK_MODE_LOCAL:
+ if (nmp->nm_vers >= NFS_VER4) {
+ /* disabled/local lock mode only allowed on v2/v3 */
+ error = EINVAL;
+ break;
+ }
+ /* FALLTHROUGH */
+ case NFS_LOCK_MODE_ENABLED:
+ nmp->nm_lockmode = val;
+ break;
+ default:
+ error = EINVAL;
+ }
+ }
+ nfsmerr_if(error);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SECURITY)) {
+ uint32_t seccnt;
+ xb_get_32(error, &xb, seccnt);
+ if (!error && ((seccnt < 1) || (seccnt > NX_MAX_SEC_FLAVORS)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ nmp->nm_sec.count = seccnt;
+ for (i=0; i < seccnt; i++) {
+ xb_get_32(error, &xb, nmp->nm_sec.flavors[i]);
+ /* Check for valid security flavor */
+ switch (nmp->nm_sec.flavors[i]) {
+ case RPCAUTH_NONE:
+ case RPCAUTH_SYS:
+ case RPCAUTH_KRB5:
+ case RPCAUTH_KRB5I:
+ case RPCAUTH_KRB5P:
+ break;
+ default:
+ error = EINVAL;
+ }
+ }
+ /* start with the first flavor */
+ nmp->nm_auth = nmp->nm_sec.flavors[0];
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_KERB_ETYPE)) {
+ uint32_t etypecnt;
+ xb_get_32(error, &xb, etypecnt);
+ if (!error && ((etypecnt < 1) || (etypecnt > NFS_MAX_ETYPES)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ nmp->nm_etype.count = etypecnt;
+ xb_get_32(error, &xb, nmp->nm_etype.selected);
+ nfsmerr_if(error);
+ if (etypecnt) {
+ nmp->nm_etype.selected = etypecnt; /* Nothing is selected yet, so set selected to count */
+ for (i=0; i < etypecnt; i++) {
+ xb_get_32(error, &xb, nmp->nm_etype.etypes[i]);
+ /* Check for valid encryption type */
+ switch (nmp->nm_etype.etypes[i]) {
+ case NFS_DES3_CBC_SHA1_KD:
+ case NFS_AES128_CTS_HMAC_SHA1_96:
+ case NFS_AES256_CTS_HMAC_SHA1_96:
+ break;
+ default:
+ error = EINVAL;
+ }
+ }
+ }
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MAX_GROUP_LIST))
+ xb_get_32(error, &xb, nmp->nm_numgrps);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOCKET_TYPE)) {
+ char sotype[6];
+
+ xb_get_32(error, &xb, val);
+ if (!error && ((val < 3) || (val > 5)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, sotype, val, 0);
+ nfsmerr_if(error);
+ sotype[val] = '\0';
+ if (!strcmp(sotype, "tcp")) {
+ nmp->nm_sotype = SOCK_STREAM;
+ } else if (!strcmp(sotype, "udp")) {
+ nmp->nm_sotype = SOCK_DGRAM;
+ } else if (!strcmp(sotype, "tcp4")) {
+ nmp->nm_sotype = SOCK_STREAM;
+ nmp->nm_sofamily = AF_INET;
+ } else if (!strcmp(sotype, "udp4")) {
+ nmp->nm_sotype = SOCK_DGRAM;
+ nmp->nm_sofamily = AF_INET;
+ } else if (!strcmp(sotype, "tcp6")) {
+ nmp->nm_sotype = SOCK_STREAM;
+ nmp->nm_sofamily = AF_INET6;
+ } else if (!strcmp(sotype, "udp6")) {
+ nmp->nm_sotype = SOCK_DGRAM;
+ nmp->nm_sofamily = AF_INET6;
+ } else if (!strcmp(sotype, "inet4")) {
+ nmp->nm_sofamily = AF_INET;
+ } else if (!strcmp(sotype, "inet6")) {
+ nmp->nm_sofamily = AF_INET6;
+ } else if (!strcmp(sotype, "inet")) {
+ nmp->nm_sofamily = 0; /* ok */
+ } else {
+ error = EINVAL;
+ }
+ if (!error && (nmp->nm_vers >= NFS_VER4) && nmp->nm_sotype &&
+ (nmp->nm_sotype != SOCK_STREAM))
+ error = EINVAL; /* NFSv4 is only allowed over TCP. */
+ nfsmerr_if(error);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_PORT))
+ xb_get_32(error, &xb, nmp->nm_nfsport);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MOUNT_PORT))
+ xb_get_32(error, &xb, nmp->nm_mountport);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_REQUEST_TIMEOUT)) {
+ /* convert from time to 0.1s units */
+ xb_get_32(error, &xb, nmp->nm_timeo);
+ xb_get_32(error, &xb, val);
+ nfsmerr_if(error);
+ if (val >= 1000000000)
+ error = EINVAL;
+ nfsmerr_if(error);
+ nmp->nm_timeo *= 10;
+ nmp->nm_timeo += (val+100000000-1)/100000000;
+ /* now convert to ticks */
+ nmp->nm_timeo = (nmp->nm_timeo * NFS_HZ + 5) / 10;
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOFT_RETRY_COUNT)) {
+ xb_get_32(error, &xb, val);
+ if (!error && (val > 1))
+ nmp->nm_retry = val;
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_DEAD_TIMEOUT)) {
+ xb_get_32(error, &xb, nmp->nm_deadtimeout);
+ xb_skip(error, &xb, XDRWORD);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FH)) {
+ nfsmerr_if(error);
+ MALLOC(nmp->nm_fh, fhandle_t *, sizeof(fhandle_t), M_TEMP, M_WAITOK|M_ZERO);
+ if (!nmp->nm_fh)
+ error = ENOMEM;
+ xb_get_32(error, &xb, nmp->nm_fh->fh_len);
+ nfsmerr_if(error);
+ if (nmp->nm_fh->fh_len < 0 ||
+ (size_t)nmp->nm_fh->fh_len > sizeof(nmp->nm_fh->fh_data))
+ error = EINVAL;
+ else
+ error = xb_get_bytes(&xb, (char*)&nmp->nm_fh->fh_data[0], nmp->nm_fh->fh_len, 0);
+ }
+ nfsmerr_if(error);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FS_LOCATIONS)) {
+ uint32_t loc, serv, addr, comp;
+ struct nfs_fs_location *fsl;
+ struct nfs_fs_server *fss;
+ struct nfs_fs_path *fsp;
+
+ xb_get_32(error, &xb, nmp->nm_locations.nl_numlocs); /* fs location count */
+ /* sanity check location count */
+ if (!error && ((nmp->nm_locations.nl_numlocs < 1) || (nmp->nm_locations.nl_numlocs > 256)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ MALLOC(nmp->nm_locations.nl_locations, struct nfs_fs_location **, nmp->nm_locations.nl_numlocs * sizeof(struct nfs_fs_location*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!nmp->nm_locations.nl_locations)
+ error = ENOMEM;
+ for (loc = 0; loc < nmp->nm_locations.nl_numlocs; loc++) {
+ nfsmerr_if(error);
+ MALLOC(fsl, struct nfs_fs_location *, sizeof(struct nfs_fs_location), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fsl)
+ error = ENOMEM;
+ nmp->nm_locations.nl_locations[loc] = fsl;
+ xb_get_32(error, &xb, fsl->nl_servcount); /* server count */
+ /* sanity check server count */
+ if (!error && ((fsl->nl_servcount < 1) || (fsl->nl_servcount > 256)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ MALLOC(fsl->nl_servers, struct nfs_fs_server **, fsl->nl_servcount * sizeof(struct nfs_fs_server*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fsl->nl_servers)
+ error = ENOMEM;
+ for (serv = 0; serv < fsl->nl_servcount; serv++) {
+ nfsmerr_if(error);
+ MALLOC(fss, struct nfs_fs_server *, sizeof(struct nfs_fs_server), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fss)
+ error = ENOMEM;
+ fsl->nl_servers[serv] = fss;
+ xb_get_32(error, &xb, val); /* server name length */
+ /* sanity check server name length */
+ if (!error && ((val < 1) || (val > MAXPATHLEN)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ MALLOC(fss->ns_name, char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!fss->ns_name)
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, fss->ns_name, val, 0); /* server name */
+ xb_get_32(error, &xb, fss->ns_addrcount); /* address count */
+ /* sanity check address count (OK to be zero) */
+ if (!error && (fss->ns_addrcount > 256))
+ error = EINVAL;
+ nfsmerr_if(error);
+ if (fss->ns_addrcount > 0) {
+ MALLOC(fss->ns_addresses, char **, fss->ns_addrcount * sizeof(char *), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fss->ns_addresses)
+ error = ENOMEM;
+ for (addr = 0; addr < fss->ns_addrcount; addr++) {
+ xb_get_32(error, &xb, val); /* address length */
+ /* sanity check address length */
+ if (!error && ((val < 1) || (val > 128)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ MALLOC(fss->ns_addresses[addr], char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!fss->ns_addresses[addr])
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, fss->ns_addresses[addr], val, 0); /* address */
+ }
+ }
+ xb_get_32(error, &xb, val); /* server info length */
+ xb_skip(error, &xb, val); /* skip server info */
+ }
+ /* get pathname */
+ fsp = &fsl->nl_path;
+ xb_get_32(error, &xb, fsp->np_compcount); /* component count */
+ /* sanity check component count */
+ if (!error && (fsp->np_compcount > MAXPATHLEN))
+ error = EINVAL;
+ nfsmerr_if(error);
+ if (fsp->np_compcount) {
+ MALLOC(fsp->np_components, char **, fsp->np_compcount * sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
+ if (!fsp->np_components)
+ error = ENOMEM;
+ }
+ for (comp = 0; comp < fsp->np_compcount; comp++) {
+ xb_get_32(error, &xb, val); /* component length */
+ /* sanity check component length */
+ if (!error && (val == 0)) {
+ /*
+ * Apparently some people think a path with zero components should
+ * be encoded with one zero-length component. So, just ignore any
+ * zero length components.
+ */
+ comp--;
+ fsp->np_compcount--;
+ if (fsp->np_compcount == 0) {
+ FREE(fsp->np_components, M_TEMP);
+ fsp->np_components = NULL;
+ }
+ continue;
+ }
+ if (!error && ((val < 1) || (val > MAXPATHLEN)))
+ error = EINVAL;
+ nfsmerr_if(error);
+ MALLOC(fsp->np_components[comp], char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!fsp->np_components[comp])
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, fsp->np_components[comp], val, 0); /* component */
+ }
+ xb_get_32(error, &xb, val); /* fs location info length */
+ xb_skip(error, &xb, val); /* skip fs location info */
+ }
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFLAGS))
+ xb_skip(error, &xb, XDRWORD);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFROM)) {
+ xb_get_32(error, &xb, len);
+ nfsmerr_if(error);
+ val = len;
+ if (val >= sizeof(vfs_statfs(mp)->f_mntfromname))
+ val = sizeof(vfs_statfs(mp)->f_mntfromname) - 1;
+ error = xb_get_bytes(&xb, vfs_statfs(mp)->f_mntfromname, val, 0);
+ if ((len - val) > 0)
+ xb_skip(error, &xb, len - val);
+ nfsmerr_if(error);
+ vfs_statfs(mp)->f_mntfromname[val] = '\0';
+ }
+ nfsmerr_if(error);
+
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_REALM)) {
+ xb_get_32(error, &xb, len);
+ if (!error && ((len < 1) || (len > MAXPATHLEN)))
+ error=EINVAL;
+ nfsmerr_if(error);
+ /* allocate an extra byte for a leading '@' if its not already prepended to the realm */
+ MALLOC(nmp->nm_realm, char *, len+2, M_TEMP, M_WAITOK|M_ZERO);
+ if (!nmp->nm_realm)
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, nmp->nm_realm, len, 0);
+ if (error == 0 && *nmp->nm_realm != '@') {
+ bcopy(nmp->nm_realm, &nmp->nm_realm[1], len);
+ nmp->nm_realm[0] = '@';
+ }
+ }
+ nfsmerr_if(error);
+
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_PRINCIPAL)) {
+ xb_get_32(error, &xb, len);
+ if (!error && ((len < 1) || (len > MAXPATHLEN)))
+ error=EINVAL;
+ nfsmerr_if(error);
+ MALLOC(nmp->nm_principal, char *, len+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!nmp->nm_principal)
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, nmp->nm_principal, len, 0);
+ }
+ nfsmerr_if(error);
+
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SVCPRINCIPAL)) {
+ xb_get_32(error, &xb, len);
+ if (!error && ((len < 1) || (len > MAXPATHLEN)))
+ error=EINVAL;
+ nfsmerr_if(error);
+ MALLOC(nmp->nm_sprinc, char *, len+1, M_TEMP, M_WAITOK|M_ZERO);
+ if (!nmp->nm_sprinc)
+ error = ENOMEM;
+ nfsmerr_if(error);
+ error = xb_get_bytes(&xb, nmp->nm_sprinc, len, 0);
+ }
+ nfsmerr_if(error);
+
+ /*
+ * Sanity check/finalize settings.
+ */
+
+ if (nmp->nm_timeo < NFS_MINTIMEO)
+ nmp->nm_timeo = NFS_MINTIMEO;
+ else if (nmp->nm_timeo > NFS_MAXTIMEO)
+ nmp->nm_timeo = NFS_MAXTIMEO;
+ if (nmp->nm_retry > NFS_MAXREXMIT)
+ nmp->nm_retry = NFS_MAXREXMIT;
+
+ if (nmp->nm_numgrps > NFS_MAXGRPS)
+ nmp->nm_numgrps = NFS_MAXGRPS;
+ if (nmp->nm_readahead > NFS_MAXRAHEAD)
+ nmp->nm_readahead = NFS_MAXRAHEAD;
+ if (nmp->nm_acregmin > nmp->nm_acregmax)
+ nmp->nm_acregmin = nmp->nm_acregmax;
+ if (nmp->nm_acdirmin > nmp->nm_acdirmax)
+ nmp->nm_acdirmin = nmp->nm_acdirmax;
+
+ /* need at least one fs location */
+ if (nmp->nm_locations.nl_numlocs < 1)
+ error = EINVAL;
+ nfsmerr_if(error);
+
+ /* init mount's mntfromname to first location */
+ if (!NM_OMATTR_GIVEN(nmp, MNTFROM))
+ nfs_location_mntfromname(&nmp->nm_locations, firstloc,
+ vfs_statfs(mp)->f_mntfromname, sizeof(vfs_statfs(mp)->f_mntfromname), 0);
+
+ /* Need to save the mounting credential for v4. */
+ nmp->nm_mcred = vfs_context_ucred(ctx);
+ if (IS_VALID_CRED(nmp->nm_mcred))
+ kauth_cred_ref(nmp->nm_mcred);
+
+ /*
+ * If a reserved port is required, check for that privilege.
+ * (Note that mirror mounts are exempt because the privilege was
+ * already checked for the original mount.)
+ */
+ if (NMFLAG(nmp, RESVPORT) && !vfs_iskernelmount(mp))
+ error = priv_check_cred(nmp->nm_mcred, PRIV_NETINET_RESERVEDPORT, 0);
+ nfsmerr_if(error);
+
+ /* do mount's initial socket connection */
+ error = nfs_mount_connect(nmp);
+ nfsmerr_if(error);
+
+ /* set up the version-specific function tables */
+ if (nmp->nm_vers < NFS_VER4)
+ nmp->nm_funcs = &nfs3_funcs;
+ else
+ nmp->nm_funcs = &nfs4_funcs;
+
+ /* sanity check settings now that version/connection is set */
+ if (nmp->nm_vers == NFS_VER2) /* ignore RDIRPLUS on NFSv2 */
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_RDIRPLUS);
+ if (nmp->nm_vers >= NFS_VER4) {
+ if (NFS_BITMAP_ISSET(nmp->nm_flags, NFS_MFLAG_ACLONLY)) /* aclonly trumps noacl */
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_NOACL);
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_CALLUMNT);
+ if (nmp->nm_lockmode != NFS_LOCK_MODE_ENABLED)
+ error = EINVAL; /* disabled/local lock mode only allowed on v2/v3 */
+ } else {
+ /* ignore these if not v4 */
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_NOCALLBACK);
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_NAMEDATTR);
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_NOACL);
+ NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_ACLONLY);
+ }
+ nfsmerr_if(error);
+
+ if (nmp->nm_sotype == SOCK_DGRAM) {
+ /* I/O size defaults for UDP are different */
+ if (!NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READ_SIZE))
+ nmp->nm_rsize = NFS_DGRAM_RSIZE;
+ if (!NFS_BITMAP_ISSET(mattrs, NFS_MATTR_WRITE_SIZE))
+ nmp->nm_wsize = NFS_DGRAM_WSIZE;
+ }
+
+ /* round down I/O sizes to multiple of NFS_FABLKSIZE */
+ nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_rsize <= 0)
+ nmp->nm_rsize = NFS_FABLKSIZE;
+ nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
+ if (nmp->nm_wsize <= 0)
+ nmp->nm_wsize = NFS_FABLKSIZE;
+
+ /* and limit I/O sizes to maximum allowed */
+ maxio = (nmp->nm_vers == NFS_VER2) ? NFS_V2MAXDATA :
+ (nmp->nm_sotype == SOCK_DGRAM) ? NFS_MAXDGRAMDATA : NFS_MAXDATA;
+ if (maxio > NFS_MAXBSIZE)
+ maxio = NFS_MAXBSIZE;
+ if (nmp->nm_rsize > maxio)
+ nmp->nm_rsize = maxio;
+ if (nmp->nm_wsize > maxio)
+ nmp->nm_wsize = maxio;
+
+ if (nmp->nm_readdirsize > maxio)
+ nmp->nm_readdirsize = maxio;
+ if (nmp->nm_readdirsize > nmp->nm_rsize)
+ nmp->nm_readdirsize = nmp->nm_rsize;
+
+ /* Set up the sockets and related info */
+ if (nmp->nm_sotype == SOCK_DGRAM)
+ TAILQ_INIT(&nmp->nm_cwndq);
+
+ /*
+ * Get the root node/attributes from the NFS server and
+ * do any basic, version-specific setup.
+ */
+ error = nmp->nm_funcs->nf_mount(nmp, ctx, &np);
+ nfsmerr_if(error);
+
+ /*
+ * A reference count is needed on the node representing the
+ * remote root. If this object is not persistent, then backward
+ * traversals of the mount point (i.e. "..") will not work if
+ * the node gets flushed out of the cache.
+ */
+ nmp->nm_dnp = np;
+ *vpp = NFSTOV(np);
+ /* get usecount and drop iocount */
+ error = vnode_ref(*vpp);
+ vnode_put(*vpp);
+ if (error) {
+ vnode_recycle(*vpp);
+ goto nfsmerr;
+ }
+
+ /*
+ * Do statfs to ensure static info gets set to reasonable values.
+ */
+ if ((error = nmp->nm_funcs->nf_update_statfs(nmp, ctx))) {
+ int error2 = vnode_getwithref(*vpp);
+ vnode_rele(*vpp);
+ if (!error2)
+ vnode_put(*vpp);
+ vnode_recycle(*vpp);
+ goto nfsmerr;
+ }
+ sbp = vfs_statfs(mp);
+ sbp->f_bsize = nmp->nm_fsattr.nfsa_bsize;
+ sbp->f_blocks = nmp->nm_fsattr.nfsa_space_total / sbp->f_bsize;
+ sbp->f_bfree = nmp->nm_fsattr.nfsa_space_free / sbp->f_bsize;
+ sbp->f_bavail = nmp->nm_fsattr.nfsa_space_avail / sbp->f_bsize;
+ sbp->f_bused = (nmp->nm_fsattr.nfsa_space_total / sbp->f_bsize) -
+ (nmp->nm_fsattr.nfsa_space_free / sbp->f_bsize);
+ sbp->f_files = nmp->nm_fsattr.nfsa_files_total;
+ sbp->f_ffree = nmp->nm_fsattr.nfsa_files_free;
+ sbp->f_iosize = nfs_iosize;
+
+ /*
+ * Calculate the size used for I/O buffers. Use the larger
+ * of the two sizes to minimise NFS requests but make sure
+ * that it is at least one VM page to avoid wasting buffer
+ * space and to allow easy mmapping of I/O buffers.
+ * The read/write RPC calls handle the splitting up of
+ * buffers into multiple requests if the buffer size is
+ * larger than the I/O size.
+ */
+#ifndef CONFIG_EMBEDDED
+ iosize = max(nmp->nm_rsize, nmp->nm_wsize);
+ if (iosize < PAGE_SIZE)
+ iosize = PAGE_SIZE;
+#else
+ iosize = PAGE_SIZE;
+#endif
+ nmp->nm_biosize = trunc_page_32(iosize);
+
+ /* For NFSv3 and greater, there is a (relatively) reliable ACCESS call. */
+ if (nmp->nm_vers > NFS_VER2)
+ vfs_setauthopaqueaccess(mp);
+
+ switch (nmp->nm_lockmode) {
+ case NFS_LOCK_MODE_DISABLED:
+ break;
+ case NFS_LOCK_MODE_LOCAL:
+ vfs_setlocklocal(nmp->nm_mountp);
+ break;
+ case NFS_LOCK_MODE_ENABLED:
+ default:
+ if (nmp->nm_vers <= NFS_VER3)
+ nfs_lockd_mount_register(nmp);
+ break;
+ }
+
+ /* success! */
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state |= NFSSTA_MOUNTED;
+ lck_mtx_unlock(&nmp->nm_lock);
+ return (0);
+nfsmerr:
+ nfs_mount_drain_and_cleanup(nmp);
+ return (error);
+}
+
+#if CONFIG_TRIGGERS
+
+/*
+ * We've detected a file system boundary on the server and
+ * need to mount a new file system so that our file systems
+ * MIRROR the file systems on the server.
+ *
+ * Build the mount arguments for the new mount and call kernel_mount().
+ */
+int
+nfs_mirror_mount_domount(vnode_t dvp, vnode_t vp, vfs_context_t ctx)
+{
+ nfsnode_t np = VTONFS(vp);
+ nfsnode_t dnp = VTONFS(dvp);
+ struct nfsmount *nmp = NFSTONMP(np);
+ char fstype[MFSTYPENAMELEN], *mntfromname = NULL, *path = NULL, *relpath, *p, *cp;
+ int error = 0, pathbuflen = MAXPATHLEN, i, mntflags = 0, referral, skipcopy = 0;
+ size_t nlen;
+ struct xdrbuf xb, xbnew;
+ uint32_t mattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t newmattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t newmflags[NFS_MFLAG_BITMAP_LEN];
+ uint32_t newmflags_mask[NFS_MFLAG_BITMAP_LEN];
+ uint32_t argslength = 0, val, count, mlen, mlen2, rlen, relpathcomps;
+ uint32_t argslength_offset, attrslength_offset, end_offset;
+ uint32_t numlocs, loc, numserv, serv, numaddr, addr, numcomp, comp;
+ char buf[XDRWORD];
+ struct nfs_fs_locations nfsls;
+
+ referral = (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL);
+ if (referral)
+ bzero(&nfsls, sizeof(nfsls));
+
+ xb_init(&xbnew, 0);
+
+ if (!nmp || (nmp->nm_state & (NFSSTA_FORCE|NFSSTA_DEAD)))
+ return (ENXIO);
+
+ /* allocate a couple path buffers we need */
+ MALLOC_ZONE(mntfromname, char *, pathbuflen, M_NAMEI, M_WAITOK);
+ if (!mntfromname) {
+ error = ENOMEM;
+ goto nfsmerr;
+ }
+ MALLOC_ZONE(path, char *, pathbuflen, M_NAMEI, M_WAITOK);
+ if (!path) {
+ error = ENOMEM;
+ goto nfsmerr;
+ }
+
+ /* get the path for the directory being mounted on */
+ error = vn_getpath(vp, path, &pathbuflen);
+ if (error) {
+ error = ENOMEM;
+ goto nfsmerr;
+ }
+
+ /*
+ * Set up the mntfromname for the new mount based on the
+ * current mount's mntfromname and the directory's path
+ * relative to the current mount's mntonname.
+ * Set up relpath to point at the relative path on the current mount.
+ * Also, count the number of components in relpath.
+ * We'll be adding those to each fs location path in the new args.
+ */
+ nlen = strlcpy(mntfromname, vfs_statfs(nmp->nm_mountp)->f_mntfromname, MAXPATHLEN);
+ if ((nlen > 0) && (mntfromname[nlen-1] == '/')) { /* avoid double '/' in new name */
+ mntfromname[nlen-1] = '\0';
+ nlen--;
+ }
+ relpath = mntfromname + nlen;
+ nlen = strlcat(mntfromname, path + strlen(vfs_statfs(nmp->nm_mountp)->f_mntonname), MAXPATHLEN);
+ if (nlen >= MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto nfsmerr;
+ }
+ /* count the number of components in relpath */
+ p = relpath;
+ while (*p && (*p == '/'))
+ p++;
+ relpathcomps = 0;
+ while (*p) {
+ relpathcomps++;
+ while (*p && (*p != '/'))
+ p++;
+ while (*p && (*p == '/'))
+ p++;
+ }
+
+ /* grab a copy of the file system type */
+ vfs_name(vnode_mount(vp), fstype);
+
+ /* for referrals, fetch the fs locations */
+ if (referral) {
+ const char *vname = vnode_getname(NFSTOV(np));
+ if (!vname) {
+ error = ENOENT;
+ } else {
+ error = nfs4_get_fs_locations(nmp, dnp, NULL, 0, vname, ctx, &nfsls);
+ vnode_putname(vname);
+ if (!error && (nfsls.nl_numlocs < 1))
+ error = ENOENT;
+ }
+ nfsmerr_if(error);
+ }
+
+ /* set up NFS mount args based on current mount args */
+
+#define xb_copy_32(E, XBSRC, XBDST, V) \
+ do { \
+ if (E) break; \
+ xb_get_32((E), (XBSRC), (V)); \
+ if (skipcopy) break; \
+ xb_add_32((E), (XBDST), (V)); \
+ } while (0)
+#define xb_copy_opaque(E, XBSRC, XBDST) \
+ do { \
+ uint32_t __count, __val; \
+ xb_copy_32((E), (XBSRC), (XBDST), __count); \
+ if (E) break; \
+ __count = nfsm_rndup(__count); \
+ __count /= XDRWORD; \
+ while (__count-- > 0) \
+ xb_copy_32((E), (XBSRC), (XBDST), __val); \
+ } while (0)
+
+ xb_init_buffer(&xb, nmp->nm_args, 2*XDRWORD);
+ xb_get_32(error, &xb, val); /* version */
+ xb_get_32(error, &xb, argslength); /* args length */
+ xb_init_buffer(&xb, nmp->nm_args, argslength);
+
+ xb_init_buffer(&xbnew, NULL, 0);
+ xb_copy_32(error, &xb, &xbnew, val); /* version */
+ argslength_offset = xb_offset(&xbnew);
+ xb_copy_32(error, &xb, &xbnew, val); /* args length */
+ xb_copy_32(error, &xb, &xbnew, val); /* XDR args version */
+ count = NFS_MATTR_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, mattrs, count); /* mount attribute bitmap */
+ nfsmerr_if(error);
+ for (i = 0; i < NFS_MATTR_BITMAP_LEN; i++)
+ newmattrs[i] = mattrs[i];
+ if (referral)
+ NFS_BITMAP_SET(newmattrs, NFS_MATTR_FS_LOCATIONS);
+ else
+ NFS_BITMAP_SET(newmattrs, NFS_MATTR_FH);
+ NFS_BITMAP_SET(newmattrs, NFS_MATTR_FLAGS);
+ NFS_BITMAP_SET(newmattrs, NFS_MATTR_MNTFLAGS);
+ NFS_BITMAP_CLR(newmattrs, NFS_MATTR_MNTFROM);
+ xb_add_bitmap(error, &xbnew, newmattrs, NFS_MATTR_BITMAP_LEN);
+ attrslength_offset = xb_offset(&xbnew);
+ xb_copy_32(error, &xb, &xbnew, val); /* attrs length */
+ NFS_BITMAP_ZERO(newmflags_mask, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_ZERO(newmflags, NFS_MFLAG_BITMAP_LEN);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FLAGS)) {
+ count = NFS_MFLAG_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, newmflags_mask, count); /* mount flag mask bitmap */
+ count = NFS_MFLAG_BITMAP_LEN;
+ xb_get_bitmap(error, &xb, newmflags, count); /* mount flag bitmap */
+ }
+ NFS_BITMAP_SET(newmflags_mask, NFS_MFLAG_EPHEMERAL);
+ NFS_BITMAP_SET(newmflags, NFS_MFLAG_EPHEMERAL);
+ xb_add_bitmap(error, &xbnew, newmflags_mask, NFS_MFLAG_BITMAP_LEN);
+ xb_add_bitmap(error, &xbnew, newmflags, NFS_MFLAG_BITMAP_LEN);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_MINOR_VERSION))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_VERSION_RANGE)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READ_SIZE))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_WRITE_SIZE))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READDIR_SIZE))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_READAHEAD))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MIN)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_REG_MAX)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MIN)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MAX)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_LOCK_MODE))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SECURITY)) {
+ xb_copy_32(error, &xb, &xbnew, count);
+ while (!error && (count-- > 0))
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_KERB_ETYPE)) {
+ xb_copy_32(error, &xb, &xbnew, count);
+ xb_add_32(error, &xbnew, -1);
+ while (!error && (count-- > 0))
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MAX_GROUP_LIST))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOCKET_TYPE))
+ xb_copy_opaque(error, &xb, &xbnew);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_NFS_PORT))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MOUNT_PORT))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_REQUEST_TIMEOUT)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SOFT_RETRY_COUNT))
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_DEAD_TIMEOUT)) {
+ xb_copy_32(error, &xb, &xbnew, val);
+ xb_copy_32(error, &xb, &xbnew, val);
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FH)) {
+ xb_get_32(error, &xb, count);
+ xb_skip(error, &xb, count);
+ }
+ if (!referral) {
+ /* set the initial file handle to the directory's file handle */
+ xb_add_fh(error, &xbnew, np->n_fhp, np->n_fhsize);
+ }
+ /* copy/extend/skip fs locations */
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_FS_LOCATIONS)) {
+ numlocs = numserv = numaddr = numcomp = 0;
+ if (referral) /* don't copy the fs locations for a referral */
+ skipcopy = 1;
+ xb_copy_32(error, &xb, &xbnew, numlocs); /* location count */
+ for (loc = 0; !error && (loc < numlocs); loc++) {
+ xb_copy_32(error, &xb, &xbnew, numserv); /* server count */
+ for (serv = 0; !error && (serv < numserv); serv++) {
+ xb_copy_opaque(error, &xb, &xbnew); /* server name */
+ xb_copy_32(error, &xb, &xbnew, numaddr); /* address count */
+ for (addr = 0; !error && (addr < numaddr); addr++)
+ xb_copy_opaque(error, &xb, &xbnew); /* address */
+ xb_copy_opaque(error, &xb, &xbnew); /* server info */
+ }
+ /* pathname */
+ xb_get_32(error, &xb, numcomp); /* component count */
+ if (!skipcopy)
+ xb_add_32(error, &xbnew, numcomp+relpathcomps); /* new component count */
+ for (comp = 0; !error && (comp < numcomp); comp++)
+ xb_copy_opaque(error, &xb, &xbnew); /* component */
+ /* add additional components */
+ for (comp = 0; !skipcopy && !error && (comp < relpathcomps); comp++) {
+ p = relpath;
+ while (*p && (*p == '/'))
+ p++;
+ while (*p && !error) {
+ cp = p;
+ while (*p && (*p != '/'))
+ p++;
+ xb_add_string(error, &xbnew, cp, (p - cp)); /* component */
+ while (*p && (*p == '/'))
+ p++;
+ }
+ }
+ xb_copy_opaque(error, &xb, &xbnew); /* fs location info */
+ }
+ if (referral)
+ skipcopy = 0;
+ }
+ if (referral) {
+ /* add referral's fs locations */
+ xb_add_32(error, &xbnew, nfsls.nl_numlocs); /* FS_LOCATIONS */
+ for (loc = 0; !error && (loc < nfsls.nl_numlocs); loc++) {
+ xb_add_32(error, &xbnew, nfsls.nl_locations[loc]->nl_servcount);
+ for (serv = 0; !error && (serv < nfsls.nl_locations[loc]->nl_servcount); serv++) {
+ xb_add_string(error, &xbnew, nfsls.nl_locations[loc]->nl_servers[serv]->ns_name,
+ strlen(nfsls.nl_locations[loc]->nl_servers[serv]->ns_name));
+ xb_add_32(error, &xbnew, nfsls.nl_locations[loc]->nl_servers[serv]->ns_addrcount);
+ for (addr = 0; !error && (addr < nfsls.nl_locations[loc]->nl_servers[serv]->ns_addrcount); addr++)
+ xb_add_string(error, &xbnew, nfsls.nl_locations[loc]->nl_servers[serv]->ns_addresses[addr],
+ strlen(nfsls.nl_locations[loc]->nl_servers[serv]->ns_addresses[addr]));
+ xb_add_32(error, &xbnew, 0); /* empty server info */
+ }
+ xb_add_32(error, &xbnew, nfsls.nl_locations[loc]->nl_path.np_compcount);
+ for (comp = 0; !error && (comp < nfsls.nl_locations[loc]->nl_path.np_compcount); comp++)
+ xb_add_string(error, &xbnew, nfsls.nl_locations[loc]->nl_path.np_components[comp],
+ strlen(nfsls.nl_locations[loc]->nl_path.np_components[comp]));
+ xb_add_32(error, &xbnew, 0); /* empty fs location info */
+ }
+ }
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFLAGS))
+ xb_get_32(error, &xb, mntflags);
+ /*
+ * We add the following mount flags to the ones for the mounted-on mount:
+ * MNT_DONTBROWSE - to keep the mount from showing up as a separate volume
+ * MNT_AUTOMOUNTED - to keep DiskArb from retriggering the mount after
+ * an unmount (looking for /.autodiskmounted)
+ */
+ mntflags |= (MNT_AUTOMOUNTED | MNT_DONTBROWSE);
+ xb_add_32(error, &xbnew, mntflags);
+ if (!referral && NFS_BITMAP_ISSET(mattrs, NFS_MATTR_MNTFROM)) {
+ /* copy mntfrom string and add relpath */
+ rlen = strlen(relpath);
+ xb_get_32(error, &xb, mlen);
+ nfsmerr_if(error);
+ mlen2 = mlen + ((relpath[0] != '/') ? 1 : 0) + rlen;
+ xb_add_32(error, &xbnew, mlen2);
+ count = mlen/XDRWORD;
+ /* copy the original string */
+ while (count-- > 0)
+ xb_copy_32(error, &xb, &xbnew, val);
+ if (!error && (mlen % XDRWORD)) {
+ error = xb_get_bytes(&xb, buf, mlen%XDRWORD, 0);
+ if (!error)
+ error = xb_add_bytes(&xbnew, buf, mlen%XDRWORD, 1);
+ }
+ /* insert a '/' if the relative path doesn't start with one */
+ if (!error && (relpath[0] != '/')) {
+ buf[0] = '/';
+ error = xb_add_bytes(&xbnew, buf, 1, 1);
+ }
+ /* add the additional relative path */
+ if (!error)
+ error = xb_add_bytes(&xbnew, relpath, rlen, 1);
+ /* make sure the resulting string has the right number of pad bytes */
+ if (!error && (mlen2 != nfsm_rndup(mlen2))) {
+ bzero(buf, sizeof(buf));
+ count = nfsm_rndup(mlen2) - mlen2;
+ error = xb_add_bytes(&xbnew, buf, count, 1);
+ }
+ }
+ xb_build_done(error, &xbnew);
+
+ /* update opaque counts */
+ end_offset = xb_offset(&xbnew);
+ if (!error) {
+ error = xb_seek(&xbnew, argslength_offset);
+ argslength = end_offset - argslength_offset + XDRWORD/*version*/;
+ xb_add_32(error, &xbnew, argslength);
+ }
+ if (!error) {
+ error = xb_seek(&xbnew, attrslength_offset);
+ xb_add_32(error, &xbnew, end_offset - attrslength_offset - XDRWORD/*don't include length field*/);
+ }
+ nfsmerr_if(error);
+
+ /*
+ * For kernel_mount() call, use the existing mount flags (instead of the
+ * original flags) because flags like MNT_NOSUID and MNT_NODEV may have
+ * been silently enforced.
+ */
+ mntflags = vnode_vfsvisflags(vp);
+ mntflags |= (MNT_AUTOMOUNTED | MNT_DONTBROWSE);
+
+ /* do the mount */
+ error = kernel_mount(fstype, dvp, vp, path, xb_buffer_base(&xbnew), argslength,
+ mntflags, KERNEL_MOUNT_PERMIT_UNMOUNT | KERNEL_MOUNT_NOAUTH, ctx);
+
+nfsmerr:
+ if (error)
+ printf("nfs: mirror mount of %s on %s failed (%d)\n",
+ mntfromname, path, error);
+ /* clean up */
+ xb_cleanup(&xbnew);
+ if (referral)
+ nfs_fs_locations_cleanup(&nfsls);
+ if (path)
+ FREE_ZONE(path, MAXPATHLEN, M_NAMEI);
+ if (mntfromname)
+ FREE_ZONE(mntfromname, MAXPATHLEN, M_NAMEI);
+ if (!error)
+ nfs_ephemeral_mount_harvester_start();
+ return (error);
+}
+
+/*
+ * trigger vnode functions
+ */
+
+resolver_result_t
+nfs_mirror_mount_trigger_resolve(
+ vnode_t vp,
+ const struct componentname *cnp,
+ enum path_operation pop,
+ __unused int flags,
+ __unused void *data,
+ vfs_context_t ctx)
+{
+ nfsnode_t np = VTONFS(vp);
+ vnode_t pvp = NULLVP;
+ int error = 0;
+ resolver_result_t result;
+
+ /*
+ * We have a trigger node that doesn't have anything mounted on it yet.
+ * We'll do the mount if either:
+ * (a) this isn't the last component of the path OR
+ * (b) this is an op that looks like it should trigger the mount.
+ */
+ if (cnp->cn_flags & ISLASTCN) {
+ switch (pop) {
+ case OP_MOUNT:
+ case OP_UNMOUNT:
+ case OP_STATFS:
+ case OP_LINK:
+ case OP_UNLINK:
+ case OP_RENAME:
+ case OP_MKNOD:
+ case OP_MKFIFO:
+ case OP_SYMLINK:
+ case OP_ACCESS:
+ case OP_GETATTR:
+ case OP_MKDIR:
+ case OP_RMDIR:
+ case OP_REVOKE:
+ case OP_GETXATTR:
+ case OP_LISTXATTR:
+ /* don't perform the mount for these operations */
+ result = vfs_resolver_result(np->n_trigseq, RESOLVER_NOCHANGE, 0);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger RESOLVE: no change, last %d nameiop %d, seq %d",
+ (cnp->cn_flags & ISLASTCN) ? 1 : 0, cnp->cn_nameiop, np->n_trigseq);
+#endif
+ return (result);
+ case OP_OPEN:
+ case OP_CHDIR:
+ case OP_CHROOT:
+ case OP_TRUNCATE:
+ case OP_COPYFILE:
+ case OP_PATHCONF:
+ case OP_READLINK:
+ case OP_SETATTR:
+ case OP_EXCHANGEDATA:
+ case OP_SEARCHFS:
+ case OP_FSCTL:
+ case OP_SETXATTR:
+ case OP_REMOVEXATTR:
+ default:
+ /* go ahead and do the mount */
+ break;
+ }
+ }
+
+ if (vnode_mountedhere(vp) != NULL) {
+ /*
+ * Um... there's already something mounted.
+ * Been there. Done that. Let's just say it succeeded.
+ */
+ error = 0;
+ goto skipmount;
+ }
+
+ if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx)))) {
+ result = vfs_resolver_result(np->n_trigseq, RESOLVER_ERROR, error);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger RESOLVE: busy error %d, last %d nameiop %d, seq %d",
+ error, (cnp->cn_flags & ISLASTCN) ? 1 : 0, cnp->cn_nameiop, np->n_trigseq);
+#endif
+ return (result);
+ }
+
+ pvp = vnode_getparent(vp);
+ if (pvp == NULLVP)
+ error = EINVAL;
+ if (!error)
+ error = nfs_mirror_mount_domount(pvp, vp, ctx);
+skipmount:
+ if (!error)
+ np->n_trigseq++;
+ result = vfs_resolver_result(np->n_trigseq, error ? RESOLVER_ERROR : RESOLVER_RESOLVED, error);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger RESOLVE: %s %d, last %d nameiop %d, seq %d",
+ error ? "error" : "resolved", error,
+ (cnp->cn_flags & ISLASTCN) ? 1 : 0, cnp->cn_nameiop, np->n_trigseq);
+#endif
+
+ if (pvp != NULLVP)
+ vnode_put(pvp);
+ nfs_node_clear_busy(np);
+ return (result);
+}
+
+resolver_result_t
+nfs_mirror_mount_trigger_unresolve(
+ vnode_t vp,
+ int flags,
+ __unused void *data,
+ vfs_context_t ctx)
+{
+ nfsnode_t np = VTONFS(vp);
+ mount_t mp;
+ int error;
+ resolver_result_t result;
+
+ if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx)))) {
+ result = vfs_resolver_result(np->n_trigseq, RESOLVER_ERROR, error);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger UNRESOLVE: busy error %d, seq %d", error, np->n_trigseq);
+#endif
+ return (result);
+ }
+
+ mp = vnode_mountedhere(vp);
+ if (!mp)
+ error = EINVAL;
+ if (!error)
+ error = vfs_unmountbyfsid(&(vfs_statfs(mp)->f_fsid), flags, ctx);
+ if (!error)
+ np->n_trigseq++;
+ result = vfs_resolver_result(np->n_trigseq, error ? RESOLVER_ERROR : RESOLVER_UNRESOLVED, error);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger UNRESOLVE: %s %d, seq %d",
+ error ? "error" : "unresolved", error, np->n_trigseq);
+#endif
+ nfs_node_clear_busy(np);
+ return (result);
+}
+
+resolver_result_t
+nfs_mirror_mount_trigger_rearm(
+ vnode_t vp,
+ __unused int flags,
+ __unused void *data,
+ vfs_context_t ctx)
+{
+ nfsnode_t np = VTONFS(vp);
+ int error;
+ resolver_result_t result;
+
+ if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx)))) {
+ result = vfs_resolver_result(np->n_trigseq, RESOLVER_ERROR, error);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger REARM: busy error %d, seq %d", error, np->n_trigseq);
+#endif
+ return (result);
+ }
+
+ np->n_trigseq++;
+ result = vfs_resolver_result(np->n_trigseq,
+ vnode_mountedhere(vp) ? RESOLVER_RESOLVED : RESOLVER_UNRESOLVED, 0);
+#ifdef NFS_TRIGGER_DEBUG
+ NP(np, "nfs trigger REARM: %s, seq %d",
+ vnode_mountedhere(vp) ? "resolved" : "unresolved", np->n_trigseq);
+#endif
+ nfs_node_clear_busy(np);
+ return (result);
+}
+
+/*
+ * Periodically attempt to unmount ephemeral (mirror) mounts in an attempt to limit
+ * the number of unused mounts.
+ */
+
+#define NFS_EPHEMERAL_MOUNT_HARVEST_INTERVAL 120 /* how often the harvester runs */
+struct nfs_ephemeral_mount_harvester_info {
+ fsid_t fsid; /* FSID that we need to try to unmount */
+ uint32_t mountcount; /* count of ephemeral mounts seen in scan */
+ };
+/* various globals for the harvester */
+static thread_call_t nfs_ephemeral_mount_harvester_timer = NULL;
+static int nfs_ephemeral_mount_harvester_on = 0;
+
+kern_return_t thread_terminate(thread_t);
+
+static int
+nfs_ephemeral_mount_harvester_callback(mount_t mp, void *arg)
+{
+ struct nfs_ephemeral_mount_harvester_info *hinfo = arg;
+ struct nfsmount *nmp;
+ struct timeval now;
+
+ if (strcmp(mp->mnt_vfsstat.f_fstypename, "nfs"))
+ return (VFS_RETURNED);
+ nmp = VFSTONFS(mp);
+ if (!nmp || !NMFLAG(nmp, EPHEMERAL))
+ return (VFS_RETURNED);
+ hinfo->mountcount++;
+
+ /* avoid unmounting mounts that have been triggered within the last harvest interval */
+ microtime(&now);
+ if ((nmp->nm_mounttime >> 32) > ((uint32_t)now.tv_sec - NFS_EPHEMERAL_MOUNT_HARVEST_INTERVAL))
+ return (VFS_RETURNED);
+
+ if (hinfo->fsid.val[0] || hinfo->fsid.val[1]) {
+ /* attempt to unmount previously-found ephemeral mount */
+ vfs_unmountbyfsid(&hinfo->fsid, 0, vfs_context_kernel());
+ hinfo->fsid.val[0] = hinfo->fsid.val[1] = 0;
+ }
+
+ /*
+ * We can't call unmount here since we hold a mount iter ref
+ * on mp so save its fsid for the next call iteration to unmount.
+ */
+ hinfo->fsid.val[0] = mp->mnt_vfsstat.f_fsid.val[0];
+ hinfo->fsid.val[1] = mp->mnt_vfsstat.f_fsid.val[1];
+
+ return (VFS_RETURNED);
+}
+
+/*
+ * Spawn a thread to do the ephemeral mount harvesting.
+ */
+static void
+nfs_ephemeral_mount_harvester_timer_func(void)
+{
+ thread_t thd;
+
+ if (kernel_thread_start(nfs_ephemeral_mount_harvester, NULL, &thd) == KERN_SUCCESS)
+ thread_deallocate(thd);
+}
+
+/*
+ * Iterate all mounts looking for NFS ephemeral mounts to try to unmount.
+ */
+void
+nfs_ephemeral_mount_harvester(__unused void *arg, __unused wait_result_t wr)
+{
+ struct nfs_ephemeral_mount_harvester_info hinfo;
+ uint64_t deadline;
+
+ hinfo.mountcount = 0;
+ hinfo.fsid.val[0] = hinfo.fsid.val[1] = 0;
+ vfs_iterate(VFS_ITERATE_TAIL_FIRST, nfs_ephemeral_mount_harvester_callback, &hinfo);
+ if (hinfo.fsid.val[0] || hinfo.fsid.val[1]) {
+ /* attempt to unmount last found ephemeral mount */
+ vfs_unmountbyfsid(&hinfo.fsid, 0, vfs_context_kernel());
}
- /*
- * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
- * no sense in that context.
- */
- if (argp->sotype == SOCK_STREAM)
- argp->flags &= ~NFSMNT_NOCONN;
-
- if (mp->mnt_flag & MNT_UPDATE) {
- nmp = VFSTONFS(mp);
- /* update paths, file handles, etc, here XXX */
- m_freem(nam);
- return (0);
+ lck_mtx_lock(nfs_global_mutex);
+ if (!hinfo.mountcount) {
+ /* no more ephemeral mounts - don't need timer */
+ nfs_ephemeral_mount_harvester_on = 0;
} else {
- MALLOC_ZONE(nmp, struct nfsmount *,
- sizeof (struct nfsmount), M_NFSMNT, M_WAITOK);
- bzero((caddr_t)nmp, sizeof (struct nfsmount));
- TAILQ_INIT(&nmp->nm_uidlruhead);
- TAILQ_INIT(&nmp->nm_bufq);
- mp->mnt_data = (qaddr_t)nmp;
- }
- vfs_getnewfsid(mp);
- nmp->nm_mountp = mp;
- nmp->nm_flag = argp->flags;
- if (nmp->nm_flag & NFSMNT_NQNFS)
- /*
- * We have to set mnt_maxsymlink to a non-zero value so
- * that COMPAT_43 routines will know that we are setting
- * the d_type field in directories (and can zero it for
- * unsuspecting binaries).
- */
- mp->mnt_maxsymlinklen = 1;
- nmp->nm_timeo = NFS_TIMEO;
- nmp->nm_retry = NFS_RETRANS;
- if (argp->sotype == SOCK_DGRAM) {
- nmp->nm_wsize = NFS_DGRAM_WSIZE;
- nmp->nm_rsize = NFS_DGRAM_RSIZE;
+ /* re-arm the timer */
+ clock_interval_to_deadline(NFS_EPHEMERAL_MOUNT_HARVEST_INTERVAL, NSEC_PER_SEC, &deadline);
+ thread_call_enter_delayed(nfs_ephemeral_mount_harvester_timer, deadline);
+ nfs_ephemeral_mount_harvester_on = 1;
+ }
+ lck_mtx_unlock(nfs_global_mutex);
+
+ /* thread done */
+ thread_terminate(current_thread());
+}
+
+/*
+ * Make sure the NFS ephemeral mount harvester timer is running.
+ */
+void
+nfs_ephemeral_mount_harvester_start(void)
+{
+ uint64_t deadline;
+
+ lck_mtx_lock(nfs_global_mutex);
+ if (nfs_ephemeral_mount_harvester_on) {
+ lck_mtx_unlock(nfs_global_mutex);
+ return;
+ }
+ if (nfs_ephemeral_mount_harvester_timer == NULL)
+ nfs_ephemeral_mount_harvester_timer = thread_call_allocate((thread_call_func_t)nfs_ephemeral_mount_harvester_timer_func, NULL);
+ clock_interval_to_deadline(NFS_EPHEMERAL_MOUNT_HARVEST_INTERVAL, NSEC_PER_SEC, &deadline);
+ thread_call_enter_delayed(nfs_ephemeral_mount_harvester_timer, deadline);
+ nfs_ephemeral_mount_harvester_on = 1;
+ lck_mtx_unlock(nfs_global_mutex);
+}
+
+#endif
+
+/*
+ * Send a MOUNT protocol MOUNT request to the server to get the initial file handle (and security).
+ */
+int
+nfs3_mount_rpc(struct nfsmount *nmp, struct sockaddr *sa, int sotype, int nfsvers, char *path, vfs_context_t ctx, int timeo, fhandle_t *fh, struct nfs_sec *sec)
+{
+ int error = 0, slen, mntproto;
+ thread_t thd = vfs_context_thread(ctx);
+ kauth_cred_t cred = vfs_context_ucred(ctx);
+ uint64_t xid = 0;
+ struct nfsm_chain nmreq, nmrep;
+ mbuf_t mreq;
+ uint32_t mntvers, mntport, val;
+ struct sockaddr_storage ss;
+ struct sockaddr *saddr = (struct sockaddr*)&ss;
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ mntvers = (nfsvers == NFS_VER2) ? RPCMNT_VER1 : RPCMNT_VER3;
+ mntproto = (NM_OMFLAG(nmp, MNTUDP) || (sotype == SOCK_DGRAM)) ? IPPROTO_UDP : IPPROTO_TCP;
+ sec->count = 0;
+
+ bcopy(sa, saddr, min(sizeof(ss), sa->sa_len));
+ if (saddr->sa_family == AF_INET) {
+ if (nmp->nm_mountport)
+ ((struct sockaddr_in*)saddr)->sin_port = htons(nmp->nm_mountport);
+ mntport = ntohs(((struct sockaddr_in*)saddr)->sin_port);
} else {
- nmp->nm_wsize = NFS_WSIZE;
- nmp->nm_rsize = NFS_RSIZE;
+ if (nmp->nm_mountport)
+ ((struct sockaddr_in6*)saddr)->sin6_port = htons(nmp->nm_mountport);
+ mntport = ntohs(((struct sockaddr_in6*)saddr)->sin6_port);
}
- nmp->nm_readdirsize = NFS_READDIRSIZE;
- nmp->nm_numgrps = NFS_MAXGRPS;
- nmp->nm_readahead = NFS_DEFRAHEAD;
- nmp->nm_leaseterm = NQ_DEFLEASE;
- nmp->nm_deadthresh = NQ_DEADTHRESH;
- nmp->nm_tprintf_delay = nfs_tprintf_delay;
- if (nmp->nm_tprintf_delay < 0)
- nmp->nm_tprintf_delay = 0;
- nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
- if (nmp->nm_tprintf_initial_delay < 0)
- nmp->nm_tprintf_initial_delay = 0;
- CIRCLEQ_INIT(&nmp->nm_timerhead);
- nmp->nm_inprog = NULLVP;
- bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
- bcopy(pth, mp->mnt_stat.f_mntonname, MNAMELEN);
- nmp->nm_nam = nam;
-
- if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
- nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
- if (nmp->nm_timeo < NFS_MINTIMEO)
- nmp->nm_timeo = NFS_MINTIMEO;
- else if (nmp->nm_timeo > NFS_MAXTIMEO)
- nmp->nm_timeo = NFS_MAXTIMEO;
- }
-
- if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
- nmp->nm_retry = argp->retrans;
- if (nmp->nm_retry > NFS_MAXREXMIT)
- nmp->nm_retry = NFS_MAXREXMIT;
- }
-
- if (argp->flags & NFSMNT_NFSV3) {
- if (argp->sotype == SOCK_DGRAM)
- maxio = NFS_MAXDGRAMDATA;
- else
- maxio = NFS_MAXDATA;
- } else
- maxio = NFS_V2MAXDATA;
- if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
- nmp->nm_wsize = argp->wsize;
- /* Round down to multiple of blocksize */
- nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
- if (nmp->nm_wsize <= 0)
- nmp->nm_wsize = NFS_FABLKSIZE;
+ while (!mntport) {
+ error = nfs_portmap_lookup(nmp, ctx, saddr, NULL, RPCPROG_MNT, mntvers, mntproto, timeo);
+ nfsmout_if(error);
+ if (saddr->sa_family == AF_INET)
+ mntport = ntohs(((struct sockaddr_in*)saddr)->sin_port);
+ else
+ mntport = ntohs(((struct sockaddr_in6*)saddr)->sin6_port);
+ if (!mntport) {
+ /* if not found and TCP, then retry with UDP */
+ if (mntproto == IPPROTO_UDP) {
+ error = EPROGUNAVAIL;
+ break;
+ }
+ mntproto = IPPROTO_UDP;
+ bcopy(sa, saddr, min(sizeof(ss), sa->sa_len));
+ }
}
- if (nmp->nm_wsize > maxio)
- nmp->nm_wsize = maxio;
- if (nmp->nm_wsize > MAXBSIZE)
- nmp->nm_wsize = MAXBSIZE;
+ nfsmout_if(error || !mntport);
- if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
- nmp->nm_rsize = argp->rsize;
- /* Round down to multiple of blocksize */
- nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
- if (nmp->nm_rsize <= 0)
- nmp->nm_rsize = NFS_FABLKSIZE;
+ /* MOUNT protocol MOUNT request */
+ slen = strlen(path);
+ nfsm_chain_build_alloc_init(error, &nmreq, NFSX_UNSIGNED + nfsm_rndup(slen));
+ nfsm_chain_add_name(error, &nmreq, path, slen, nmp);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsmout_if(error);
+ error = nfsm_rpchead2(nmp, (mntproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM,
+ RPCPROG_MNT, mntvers, RPCMNT_MOUNT,
+ RPCAUTH_SYS, cred, NULL, nmreq.nmc_mhead, &xid, &mreq);
+ nfsmout_if(error);
+ nmreq.nmc_mhead = NULL;
+ error = nfs_aux_request(nmp, thd, saddr, NULL,
+ ((mntproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM),
+ mreq, R_XID32(xid), 1, timeo, &nmrep);
+ nfsmout_if(error);
+ nfsm_chain_get_32(error, &nmrep, val);
+ if (!error && val)
+ error = val;
+ nfsm_chain_get_fh(error, &nmrep, nfsvers, fh);
+ if (!error && (nfsvers > NFS_VER2)) {
+ sec->count = NX_MAX_SEC_FLAVORS;
+ error = nfsm_chain_get_secinfo(&nmrep, &sec->flavors[0], &sec->count);
}
- if (nmp->nm_rsize > maxio)
- nmp->nm_rsize = maxio;
- if (nmp->nm_rsize > MAXBSIZE)
- nmp->nm_rsize = MAXBSIZE;
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ return (error);
+}
+
+
+/*
+ * Send a MOUNT protocol UNMOUNT request to tell the server we've unmounted it.
+ */
+void
+nfs3_umount_rpc(struct nfsmount *nmp, vfs_context_t ctx, int timeo)
+{
+ int error = 0, slen, mntproto;
+ thread_t thd = vfs_context_thread(ctx);
+ kauth_cred_t cred = vfs_context_ucred(ctx);
+ char *path;
+ uint64_t xid = 0;
+ struct nfsm_chain nmreq, nmrep;
+ mbuf_t mreq;
+ uint32_t mntvers, mntport;
+ struct sockaddr_storage ss;
+ struct sockaddr *saddr = (struct sockaddr*)&ss;
+
+ if (!nmp->nm_saddr)
+ return;
+
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+
+ mntvers = (nmp->nm_vers == NFS_VER2) ? RPCMNT_VER1 : RPCMNT_VER3;
+ mntproto = (NM_OMFLAG(nmp, MNTUDP) || (nmp->nm_sotype == SOCK_DGRAM)) ? IPPROTO_UDP : IPPROTO_TCP;
+ mntport = nmp->nm_mountport;
- if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
- nmp->nm_readdirsize = argp->readdirsize;
+ bcopy(nmp->nm_saddr, saddr, min(sizeof(ss), nmp->nm_saddr->sa_len));
+ if (saddr->sa_family == AF_INET)
+ ((struct sockaddr_in*)saddr)->sin_port = htons(mntport);
+ else
+ ((struct sockaddr_in6*)saddr)->sin6_port = htons(mntport);
+
+ while (!mntport) {
+ error = nfs_portmap_lookup(nmp, ctx, saddr, NULL, RPCPROG_MNT, mntvers, mntproto, timeo);
+ nfsmout_if(error);
+ if (saddr->sa_family == AF_INET)
+ mntport = ntohs(((struct sockaddr_in*)saddr)->sin_port);
+ else
+ mntport = ntohs(((struct sockaddr_in6*)saddr)->sin6_port);
+ /* if not found and mntvers > VER1, then retry with VER1 */
+ if (!mntport) {
+ if (mntvers > RPCMNT_VER1) {
+ mntvers = RPCMNT_VER1;
+ } else if (mntproto == IPPROTO_TCP) {
+ mntproto = IPPROTO_UDP;
+ mntvers = (nmp->nm_vers == NFS_VER2) ? RPCMNT_VER1 : RPCMNT_VER3;
+ } else {
+ break;
+ }
+ bcopy(nmp->nm_saddr, saddr, min(sizeof(ss), nmp->nm_saddr->sa_len));
+ }
}
- if (nmp->nm_readdirsize > maxio)
- nmp->nm_readdirsize = maxio;
- if (nmp->nm_readdirsize > nmp->nm_rsize)
- nmp->nm_readdirsize = nmp->nm_rsize;
+ nfsmout_if(!mntport);
+
+ /* MOUNT protocol UNMOUNT request */
+ path = &vfs_statfs(nmp->nm_mountp)->f_mntfromname[0];
+ while (*path && (*path != '/'))
+ path++;
+ slen = strlen(path);
+ nfsm_chain_build_alloc_init(error, &nmreq, NFSX_UNSIGNED + nfsm_rndup(slen));
+ nfsm_chain_add_name(error, &nmreq, path, slen, nmp);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsmout_if(error);
+ error = nfsm_rpchead2(nmp, (mntproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM,
+ RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMOUNT,
+ RPCAUTH_SYS, cred, NULL, nmreq.nmc_mhead, &xid, &mreq);
+ nfsmout_if(error);
+ nmreq.nmc_mhead = NULL;
+ error = nfs_aux_request(nmp, thd, saddr, NULL,
+ ((mntproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM),
+ mreq, R_XID32(xid), 1, timeo, &nmrep);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+}
- if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0 &&
- argp->maxgrouplist <= NFS_MAXGRPS)
- nmp->nm_numgrps = argp->maxgrouplist;
- if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0 &&
- argp->readahead <= NFS_MAXRAHEAD)
- nmp->nm_readahead = argp->readahead;
- if ((argp->flags & NFSMNT_LEASETERM) && argp->leaseterm >= 2 &&
- argp->leaseterm <= NQ_MAXLEASE)
- nmp->nm_leaseterm = argp->leaseterm;
- if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 1 &&
- argp->deadthresh <= NQ_NEVERDEAD)
- nmp->nm_deadthresh = argp->deadthresh;
- /* Set up the sockets and per-host congestion */
- nmp->nm_sotype = argp->sotype;
- nmp->nm_soproto = argp->proto;
+/*
+ * unmount system call
+ */
+int
+nfs_vfs_unmount(
+ mount_t mp,
+ int mntflags,
+ __unused vfs_context_t ctx)
+{
+ struct nfsmount *nmp;
+ vnode_t vp;
+ int error, flags = 0;
+ struct timespec ts = { 1, 0 };
+ nmp = VFSTONFS(mp);
+ lck_mtx_lock(&nmp->nm_lock);
+ /*
+ * Set the flag indicating that an unmount attempt is in progress.
+ */
+ nmp->nm_state |= NFSSTA_UNMOUNTING;
+ /*
+ * During a force unmount we want to...
+ * Mark that we are doing a force unmount.
+ * Make the mountpoint soft.
+ */
+ if (mntflags & MNT_FORCE) {
+ flags |= FORCECLOSE;
+ nmp->nm_state |= NFSSTA_FORCE;
+ NFS_BITMAP_SET(nmp->nm_flags, NFS_MFLAG_SOFT);
+ }
/*
- * For Connection based sockets (TCP,...) defer the connect until
- * the first request, in case the server is not responding.
+ * Wait for any in-progress monitored node scan to complete.
*/
- if (nmp->nm_sotype == SOCK_DGRAM &&
- (error = nfs_connect(nmp, (struct nfsreq *)0)))
- goto bad;
+ while (nmp->nm_state & NFSSTA_MONITOR_SCAN)
+ msleep(&nmp->nm_state, &nmp->nm_lock, PZERO-1, "nfswaitmonscan", &ts);
+ /*
+ * Goes something like this..
+ * - Call vflush() to clear out vnodes for this file system,
+ * except for the swap files. Deal with them in 2nd pass.
+ * - Decrement reference on the vnode representing remote root.
+ * - Clean up the NFS mount structure.
+ */
+ vp = NFSTOV(nmp->nm_dnp);
+ lck_mtx_unlock(&nmp->nm_lock);
/*
- * A reference count is needed on the nfsnode representing the
- * remote root. If this object is not persistent, then backward
- * traversals of the mount point (i.e. "..") will not work if
- * the nfsnode gets flushed out of the cache. UFS does not have
- * this problem, because one can identify root inodes by their
- * number == ROOTINO (2).
+ * vflush will check for busy vnodes on mountpoint.
+ * Will do the right thing for MNT_FORCE. That is, we should
+ * not get EBUSY back.
*/
- error = nfs_nget(mp, (nfsfh_t *)argp->fh, argp->fhsize, &np);
- if (error)
- goto bad;
+ error = vflush(mp, vp, SKIPSWAP | flags);
+ if (mntflags & MNT_FORCE) {
+ error = vflush(mp, NULLVP, flags); /* locks vp in the process */
+ } else {
+ if (vnode_isinuse(vp, 1))
+ error = EBUSY;
+ else
+ error = vflush(mp, vp, flags);
+ }
+ if (error) {
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state &= ~NFSSTA_UNMOUNTING;
+ lck_mtx_unlock(&nmp->nm_lock);
+ return (error);
+ }
+
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_dnp = NULL;
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /*
+ * Release the root vnode reference held by mountnfs()
+ */
+ error = vnode_get(vp);
+ vnode_rele(vp);
+ if (!error)
+ vnode_put(vp);
+
+ vflush(mp, NULLVP, FORCECLOSE);
+
+ /* Wait for all other references to be released and free the mount */
+ nfs_mount_drain_and_cleanup(nmp);
+
+ return (0);
+}
+
+/*
+ * cleanup/destroy NFS fs locations structure
+ */
+void
+nfs_fs_locations_cleanup(struct nfs_fs_locations *nfslsp)
+{
+ struct nfs_fs_location *fsl;
+ struct nfs_fs_server *fss;
+ struct nfs_fs_path *fsp;
+ uint32_t loc, serv, addr, comp;
+
+ /* free up fs locations */
+ if (!nfslsp->nl_numlocs || !nfslsp->nl_locations)
+ return;
+
+ for (loc = 0; loc < nfslsp->nl_numlocs; loc++) {
+ fsl = nfslsp->nl_locations[loc];
+ if (!fsl)
+ continue;
+ if ((fsl->nl_servcount > 0) && fsl->nl_servers) {
+ for (serv = 0; serv < fsl->nl_servcount; serv++) {
+ fss = fsl->nl_servers[serv];
+ if (!fss)
+ continue;
+ if ((fss->ns_addrcount > 0) && fss->ns_addresses) {
+ for (addr = 0; addr < fss->ns_addrcount; addr++)
+ FREE(fss->ns_addresses[addr], M_TEMP);
+ FREE(fss->ns_addresses, M_TEMP);
+ }
+ FREE(fss->ns_name, M_TEMP);
+ FREE(fss, M_TEMP);
+ }
+ FREE(fsl->nl_servers, M_TEMP);
+ }
+ fsp = &fsl->nl_path;
+ if (fsp->np_compcount && fsp->np_components) {
+ for (comp = 0; comp < fsp->np_compcount; comp++)
+ if (fsp->np_components[comp])
+ FREE(fsp->np_components[comp], M_TEMP);
+ FREE(fsp->np_components, M_TEMP);
+ }
+ FREE(fsl, M_TEMP);
+ }
+ FREE(nfslsp->nl_locations, M_TEMP);
+ nfslsp->nl_numlocs = 0;
+ nfslsp->nl_locations = NULL;
+}
+
+void
+nfs_mount_rele(struct nfsmount *nmp)
+{
+ int wup = 0;
+
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_ref < 1)
+ panic("nfs zombie mount underflow\n");
+ nmp->nm_ref--;
+ if (nmp->nm_ref == 0)
+ wup = nmp->nm_state & NFSSTA_MOUNT_DRAIN;
+ lck_mtx_unlock(&nmp->nm_lock);
+ if (wup)
+ wakeup(&nmp->nm_ref);
+}
+
+void
+nfs_mount_drain_and_cleanup(struct nfsmount *nmp)
+{
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state |= NFSSTA_MOUNT_DRAIN;
+ while (nmp->nm_ref > 0) {
+ msleep(&nmp->nm_ref, &nmp->nm_lock, PZERO-1, "nfs_mount_drain", NULL);
+ }
+ assert(nmp->nm_ref == 0);
+ lck_mtx_unlock(&nmp->nm_lock);
+ nfs_mount_cleanup(nmp);
+}
+
+/*
+ * nfs_mount_zombie
+ */
+void
+nfs_mount_zombie(struct nfsmount *nmp, int nm_state_flags)
+{
+ struct nfsreq *req, *treq;
+ struct nfs_reqqhead iodq, resendq;
+ struct timespec ts = { 1, 0 };
+ struct nfs_open_owner *noop, *nextnoop;
+ nfsnode_t np;
+ int docallback;
+
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state |= nm_state_flags;
+ nmp->nm_ref++;
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /* stop callbacks */
+ if ((nmp->nm_vers >= NFS_VER4) && !NMFLAG(nmp, NOCALLBACK) && nmp->nm_cbid)
+ nfs4_mount_callback_shutdown(nmp);
+
+ /* Destroy any RPCSEC_GSS contexts */
+ nfs_gss_clnt_ctx_unmount(nmp);
+
+ /* mark the socket for termination */
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_sockflags |= NMSOCK_UNMOUNT;
+
+ /* Have the socket thread send the unmount RPC, if requested/appropriate. */
+ if ((nmp->nm_vers < NFS_VER4) && (nmp->nm_state & NFSSTA_MOUNTED) &&
+ !(nmp->nm_state & (NFSSTA_FORCE|NFSSTA_DEAD)) && NMFLAG(nmp, CALLUMNT))
+ nfs_mount_sock_thread_wake(nmp);
+
+ /* wait for the socket thread to terminate */
+ while (nmp->nm_sockthd && current_thread() != nmp->nm_sockthd) {
+ wakeup(&nmp->nm_sockthd);
+ msleep(&nmp->nm_sockthd, &nmp->nm_lock, PZERO-1, "nfswaitsockthd", &ts);
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /* tear down the socket */
+ nfs_disconnect(nmp);
+
+ lck_mtx_lock(&nmp->nm_lock);
+
+ if ((nmp->nm_vers >= NFS_VER4) && !NMFLAG(nmp, NOCALLBACK) && nmp->nm_cbid) {
+ /* clear out any pending delegation return requests */
+ while ((np = TAILQ_FIRST(&nmp->nm_dreturnq))) {
+ TAILQ_REMOVE(&nmp->nm_dreturnq, np, n_dreturn);
+ np->n_dreturn.tqe_next = NFSNOLIST;
+ }
+ }
+
+ /* cancel any renew timer */
+ if ((nmp->nm_vers >= NFS_VER4) && nmp->nm_renew_timer) {
+ thread_call_cancel(nmp->nm_renew_timer);
+ thread_call_free(nmp->nm_renew_timer);
+ }
+
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ if (nmp->nm_state & NFSSTA_MOUNTED)
+ switch (nmp->nm_lockmode) {
+ case NFS_LOCK_MODE_DISABLED:
+ case NFS_LOCK_MODE_LOCAL:
+ break;
+ case NFS_LOCK_MODE_ENABLED:
+ default:
+ if (nmp->nm_vers <= NFS_VER3) {
+ nfs_lockd_mount_unregister(nmp);
+ nmp->nm_lockmode = NFS_LOCK_MODE_DISABLED;
+ }
+ break;
+ }
+
+ if ((nmp->nm_vers >= NFS_VER4) && nmp->nm_longid) {
+ /* remove/deallocate the client ID data */
+ lck_mtx_lock(nfs_global_mutex);
+ TAILQ_REMOVE(&nfsclientids, nmp->nm_longid, nci_link);
+ if (nmp->nm_longid->nci_id)
+ FREE(nmp->nm_longid->nci_id, M_TEMP);
+ FREE(nmp->nm_longid, M_TEMP);
+ lck_mtx_unlock(nfs_global_mutex);
+ }
/*
- * save this vnode pointer. That way nfs_unmount()
- * does not need to call nfs_net() just get it to drop
- * this vnode reference.
+ * Be sure all requests for this mount are completed
+ * and removed from the resend queue.
*/
- nmp->nm_dvp = *vpp = NFSTOV(np);
+ TAILQ_INIT(&resendq);
+ lck_mtx_lock(nfs_request_mutex);
+ TAILQ_FOREACH(req, &nfs_reqq, r_chain) {
+ if (req->r_nmp == nmp) {
+ lck_mtx_lock(&req->r_mtx);
+ if (!req->r_error && req->r_nmrep.nmc_mhead == NULL)
+ req->r_error = EIO;
+ if (req->r_flags & R_RESENDQ) {
+ lck_mtx_lock(&nmp->nm_lock);
+ req->r_flags &= ~R_RESENDQ;
+ if (req->r_rchain.tqe_next != NFSREQNOLIST) {
+ TAILQ_REMOVE(&nmp->nm_resendq, req, r_rchain);
+ /*
+ * Queue up the request so that we can unreference them
+ * with out holding nfs_request_mutex
+ */
+ TAILQ_INSERT_TAIL(&resendq, req, r_rchain);
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ wakeup(req);
+ lck_mtx_unlock(&req->r_mtx);
+ }
+ }
+ lck_mtx_unlock(nfs_request_mutex);
+
+ /* Since we've drop the request mutex we can now safely unreference the request */
+ TAILQ_FOREACH_SAFE(req, &resendq, r_rchain, treq) {
+ TAILQ_REMOVE(&resendq, req, r_rchain);
+ nfs_request_rele(req);
+ }
/*
- * Get file attributes for the mountpoint. This has the side
- * effect of filling in (*vpp)->v_type with the correct value.
+ * Now handle and outstanding async requests. We need to walk the
+ * request queue again this time with the nfsiod_mutex held. No
+ * other iods can grab our requests until we've put them on our own
+ * local iod queue for processing.
*/
- curproc = current_proc();
- error = VOP_GETATTR(*vpp, &attrs, curproc->p_ucred, curproc);
- if (error) {
- /*
- * we got problems... we couldn't get the attributes
- * from the NFS server... so the mount fails.
- */
- vput(*vpp);
- goto bad;
+ TAILQ_INIT(&iodq);
+ lck_mtx_lock(nfs_request_mutex);
+ lck_mtx_lock(nfsiod_mutex);
+ TAILQ_FOREACH(req, &nfs_reqq, r_chain) {
+ if (req->r_nmp == nmp) {
+ lck_mtx_lock(&req->r_mtx);
+ if (req->r_callback.rcb_func
+ && !(req->r_flags & R_WAITSENT) && !(req->r_flags & R_IOD)) {
+ /*
+ * Since R_IOD is not set then we need to handle it. If
+ * we're not on a list add it to our iod queue. Otherwise
+ * we must already be on nm_iodq which is added to our
+ * local queue below.
+ * %%% We should really keep a back pointer to our iod queue
+ * that we're on.
+ */
+ req->r_flags |= R_IOD;
+ if (req->r_achain.tqe_next == NFSREQNOLIST) {
+ TAILQ_INSERT_TAIL(&iodq, req, r_achain);
+ }
+ }
+ lck_mtx_unlock(&req->r_mtx);
+ }
+ }
+
+ /* finish any async I/O RPCs queued up */
+ if (nmp->nm_iodlink.tqe_next != NFSNOLIST)
+ TAILQ_REMOVE(&nfsiodmounts, nmp, nm_iodlink);
+ TAILQ_CONCAT(&iodq, &nmp->nm_iodq, r_achain);
+ lck_mtx_unlock(nfsiod_mutex);
+ lck_mtx_unlock(nfs_request_mutex);
+
+ TAILQ_FOREACH_SAFE(req, &iodq, r_achain, treq) {
+ TAILQ_REMOVE(&iodq, req, r_achain);
+ req->r_achain.tqe_next = NFSREQNOLIST;
+ lck_mtx_lock(&req->r_mtx);
+ docallback = !(req->r_flags & R_WAITSENT);
+ lck_mtx_unlock(&req->r_mtx);
+ if (docallback)
+ req->r_callback.rcb_func(req);
+ }
+
+ /* clean up common state */
+ lck_mtx_lock(&nmp->nm_lock);
+ while ((np = LIST_FIRST(&nmp->nm_monlist))) {
+ LIST_REMOVE(np, n_monlink);
+ np->n_monlink.le_next = NFSNOLIST;
+ }
+ TAILQ_FOREACH_SAFE(noop, &nmp->nm_open_owners, noo_link, nextnoop) {
+ TAILQ_REMOVE(&nmp->nm_open_owners, noop, noo_link);
+ noop->noo_flags &= ~NFS_OPEN_OWNER_LINK;
+ if (noop->noo_refcnt)
+ continue;
+ nfs_open_owner_destroy(noop);
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /* clean up NFSv4 state */
+ if (nmp->nm_vers >= NFS_VER4) {
+ lck_mtx_lock(&nmp->nm_lock);
+ while ((np = TAILQ_FIRST(&nmp->nm_delegations))) {
+ TAILQ_REMOVE(&nmp->nm_delegations, np, n_dlink);
+ np->n_dlink.tqe_next = NFSNOLIST;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+
+ nfs_mount_rele(nmp);
+}
+
+/*
+ * cleanup/destroy an nfsmount
+ */
+void
+nfs_mount_cleanup(struct nfsmount *nmp)
+{
+ if (!nmp)
+ return;
+
+ nfs_mount_zombie(nmp, 0);
+
+ NFS_VFS_DBG("Unmounting %s from %s\n",
+ vfs_statfs(nmp->nm_mountp)->f_mntfromname,
+ vfs_statfs(nmp->nm_mountp)->f_mntonname);
+ NFS_VFS_DBG("nfs state = 0x%8.8x\n", nmp->nm_state);
+ NFS_VFS_DBG("nfs socket flags = 0x%8.8x\n", nmp->nm_sockflags);
+ NFS_VFS_DBG("nfs mount ref count is %d\n", nmp->nm_ref);
+ NFS_VFS_DBG("mount ref count is %d\n", nmp->nm_mountp->mnt_count);
+
+ if (nmp->nm_mountp)
+ vfs_setfsprivate(nmp->nm_mountp, NULL);
+
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_ref)
+ panic("Some one has grabbed a ref %d state flags = 0x%8.8x\n", nmp->nm_ref, nmp->nm_state);
+
+ if (nmp->nm_saddr)
+ FREE(nmp->nm_saddr, M_SONAME);
+ if ((nmp->nm_vers < NFS_VER4) && nmp->nm_rqsaddr)
+ FREE(nmp->nm_rqsaddr, M_SONAME);
+
+ if (IS_VALID_CRED(nmp->nm_mcred))
+ kauth_cred_unref(&nmp->nm_mcred);
+
+ nfs_fs_locations_cleanup(&nmp->nm_locations);
+
+ if (nmp->nm_realm)
+ FREE(nmp->nm_realm, M_TEMP);
+ if (nmp->nm_principal)
+ FREE(nmp->nm_principal, M_TEMP);
+ if (nmp->nm_sprinc)
+ FREE(nmp->nm_sprinc, M_TEMP);
+
+ if (nmp->nm_args)
+ xb_free(nmp->nm_args);
+
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ lck_mtx_destroy(&nmp->nm_lock, nfs_mount_grp);
+ if (nmp->nm_fh)
+ FREE(nmp->nm_fh, M_TEMP);
+ FREE_ZONE((caddr_t)nmp, sizeof (struct nfsmount), M_NFSMNT);
+}
+
+/*
+ * Return root of a filesystem
+ */
+int
+nfs_vfs_root(mount_t mp, vnode_t *vpp, __unused vfs_context_t ctx)
+{
+ vnode_t vp;
+ struct nfsmount *nmp;
+ int error;
+ u_int32_t vpid;
+
+ nmp = VFSTONFS(mp);
+ if (!nmp || !nmp->nm_dnp)
+ return (ENXIO);
+ vp = NFSTOV(nmp->nm_dnp);
+ vpid = vnode_vid(vp);
+ while ((error = vnode_getwithvid(vp, vpid))) {
+ /* vnode_get() may return ENOENT if the dir changes. */
+ /* If that happens, just try it again, else return the error. */
+ if ((error != ENOENT) || (vnode_vid(vp) == vpid))
+ return (error);
+ vpid = vnode_vid(vp);
}
+ *vpp = vp;
+ return (0);
+}
+
+/*
+ * Do operations associated with quotas
+ */
+#if !QUOTA
+int
+nfs_vfs_quotactl(
+ __unused mount_t mp,
+ __unused int cmds,
+ __unused uid_t uid,
+ __unused caddr_t datap,
+ __unused vfs_context_t context)
+{
+ return (ENOTSUP);
+}
+#else
+
+static int
+nfs_sa_getport(struct sockaddr *sa, int *error)
+{
+ int port = 0;
+
+ if (sa->sa_family == AF_INET6)
+ port = ntohs(((struct sockaddr_in6*)sa)->sin6_port);
+ else if (sa->sa_family == AF_INET)
+ port = ntohs(((struct sockaddr_in*)sa)->sin_port);
+ else if (error)
+ *error = EIO;
+
+ return port;
+}
+
+static void
+nfs_sa_setport(struct sockaddr *sa, int port)
+{
+ if (sa->sa_family == AF_INET6)
+ ((struct sockaddr_in6*)sa)->sin6_port = htons(port);
+ else if (sa->sa_family == AF_INET)
+ ((struct sockaddr_in*)sa)->sin_port = htons(port);
+}
+
+int
+nfs3_getquota(struct nfsmount *nmp, vfs_context_t ctx, uid_t id, int type, struct dqblk *dqb)
+{
+ int error = 0, slen, timeo;
+ int rqport = 0, rqproto, rqvers = (type == GRPQUOTA) ? RPCRQUOTA_EXT_VER : RPCRQUOTA_VER;
+ thread_t thd = vfs_context_thread(ctx);
+ kauth_cred_t cred = vfs_context_ucred(ctx);
+ char *path;
+ uint64_t xid = 0;
+ struct nfsm_chain nmreq, nmrep;
+ mbuf_t mreq;
+ uint32_t val = 0, bsize = 0;
+ struct sockaddr *rqsaddr;
+ struct timeval now;
+ struct timespec ts = { 1, 0 };
+
+ if (!nmp->nm_saddr)
+ return (ENXIO);
+
+ if (NMFLAG(nmp, NOQUOTA))
+ return (ENOTSUP);
/*
- * Set the mount point's block I/O size.
- * We really need to do this after we get info back from
- * the server about what its preferred I/O sizes are.
+ * Allocate an address for rquotad if needed
*/
- if (nmp->nm_flag & NFSMNT_NFSV3)
- nfs_fsinfo(nmp, *vpp, curproc->p_ucred, curproc);
- mp->mnt_stat.f_iosize = nfs_iosize(nmp);
+ if (!nmp->nm_rqsaddr) {
+ int need_free = 0;
+
+ MALLOC(rqsaddr, struct sockaddr *, sizeof(struct sockaddr_storage), M_SONAME, M_WAITOK|M_ZERO);
+ bcopy(nmp->nm_saddr, rqsaddr, min(sizeof(struct sockaddr_storage), nmp->nm_saddr->sa_len));
+ /* Set the port to zero, will call rpcbind to get the port below */
+ nfs_sa_setport(rqsaddr, 0);
+ microuptime(&now);
+
+ lck_mtx_lock(&nmp->nm_lock);
+ if (!nmp->nm_rqsaddr) {
+ nmp->nm_rqsaddr = rqsaddr;
+ nmp->nm_rqsaddrstamp = now.tv_sec;
+ } else {
+ need_free = 1;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ if (need_free)
+ FREE(rqsaddr, M_SONAME);
+ }
+
+ timeo = NMFLAG(nmp, SOFT) ? 10 : 60;
+ rqproto = IPPROTO_UDP; /* XXX should prefer TCP if mount is TCP */
+
+ /* check if we have a recently cached rquota port */
+ microuptime(&now);
+ lck_mtx_lock(&nmp->nm_lock);
+ rqsaddr = nmp->nm_rqsaddr;
+ rqport = nfs_sa_getport(rqsaddr, &error);
+ while (!error && (!rqport || ((nmp->nm_rqsaddrstamp + 60) <= (uint32_t)now.tv_sec))) {
+ error = nfs_sigintr(nmp, NULL, thd, 1);
+ if (error) {
+ lck_mtx_unlock(&nmp->nm_lock);
+ return (error);
+ }
+ if (nmp->nm_state & NFSSTA_RQUOTAINPROG) {
+ nmp->nm_state |= NFSSTA_WANTRQUOTA;
+ msleep(&nmp->nm_rqsaddr, &nmp->nm_lock, PZERO-1, "nfswaitrquotaaddr", &ts);
+ rqport = nfs_sa_getport(rqsaddr, &error);
+ continue;
+ }
+ nmp->nm_state |= NFSSTA_RQUOTAINPROG;
+ lck_mtx_unlock(&nmp->nm_lock);
+
+ /* send portmap request to get rquota port */
+ error = nfs_portmap_lookup(nmp, ctx, rqsaddr, NULL, RPCPROG_RQUOTA, rqvers, rqproto, timeo);
+ if (error)
+ goto out;
+ rqport = nfs_sa_getport(rqsaddr, &error);
+ if (error)
+ goto out;
+
+ if (!rqport) {
+ /*
+ * We overload PMAPPORT for the port if rquotad is not
+ * currently registered or up at the server. In the
+ * while loop above, port will be set and we will defer
+ * for a bit. Perhaps the service isn't online yet.
+ *
+ * Note that precludes using indirect, but we're not doing
+ * that here.
+ */
+ rqport = PMAPPORT;
+ nfs_sa_setport(rqsaddr, rqport);
+ }
+ microuptime(&now);
+ nmp->nm_rqsaddrstamp = now.tv_sec;
+ out:
+ lck_mtx_lock(&nmp->nm_lock);
+ nmp->nm_state &= ~NFSSTA_RQUOTAINPROG;
+ if (nmp->nm_state & NFSSTA_WANTRQUOTA) {
+ nmp->nm_state &= ~NFSSTA_WANTRQUOTA;
+ wakeup(&nmp->nm_rqsaddr);
+ }
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ if (error)
+ return (error);
- /*
- * Lose the lock but keep the ref.
- */
- VOP_UNLOCK(*vpp, 0, curproc);
+ /* Using PMAPPORT for unavailabe rquota service */
+ if (rqport == PMAPPORT)
+ return (ENOTSUP);
- if (nmp->nm_flag & NFSMNT_RESVPORT)
- nfs_resv_mounts++;
- nmp->nm_state |= NFSSTA_MOUNTED;
- return (0);
-bad:
- nfs_disconnect(nmp);
- FREE_ZONE((caddr_t)nmp, sizeof (struct nfsmount), M_NFSMNT);
-bad2:
- m_freem(nam);
+ /* rquota request */
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
+ path = &vfs_statfs(nmp->nm_mountp)->f_mntfromname[0];
+ while (*path && (*path != '/'))
+ path++;
+ slen = strlen(path);
+ nfsm_chain_build_alloc_init(error, &nmreq, 3 * NFSX_UNSIGNED + nfsm_rndup(slen));
+ nfsm_chain_add_name(error, &nmreq, path, slen, nmp);
+ if (type == GRPQUOTA)
+ nfsm_chain_add_32(error, &nmreq, type);
+ nfsm_chain_add_32(error, &nmreq, id);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsmout_if(error);
+ error = nfsm_rpchead2(nmp, (rqproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM,
+ RPCPROG_RQUOTA, rqvers, RPCRQUOTA_GET,
+ RPCAUTH_SYS, cred, NULL, nmreq.nmc_mhead, &xid, &mreq);
+ nfsmout_if(error);
+ nmreq.nmc_mhead = NULL;
+ error = nfs_aux_request(nmp, thd, rqsaddr, NULL,
+ (rqproto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM,
+ mreq, R_XID32(xid), 0, timeo, &nmrep);
+ nfsmout_if(error);
+
+ /* parse rquota response */
+ nfsm_chain_get_32(error, &nmrep, val);
+ if (!error && (val != RQUOTA_STAT_OK)) {
+ if (val == RQUOTA_STAT_NOQUOTA)
+ error = ENOENT;
+ else if (val == RQUOTA_STAT_EPERM)
+ error = EPERM;
+ else
+ error = EIO;
+ }
+ nfsm_chain_get_32(error, &nmrep, bsize);
+ nfsm_chain_adv(error, &nmrep, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ dqb->dqb_bhardlimit = (uint64_t)val * bsize;
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ dqb->dqb_bsoftlimit = (uint64_t)val * bsize;
+ nfsm_chain_get_32(error, &nmrep, val);
+ nfsmout_if(error);
+ dqb->dqb_curbytes = (uint64_t)val * bsize;
+ nfsm_chain_get_32(error, &nmrep, dqb->dqb_ihardlimit);
+ nfsm_chain_get_32(error, &nmrep, dqb->dqb_isoftlimit);
+ nfsm_chain_get_32(error, &nmrep, dqb->dqb_curinodes);
+ nfsm_chain_get_32(error, &nmrep, dqb->dqb_btime);
+ nfsm_chain_get_32(error, &nmrep, dqb->dqb_itime);
+ nfsmout_if(error);
+ dqb->dqb_id = id;
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
return (error);
}
-
-/*
- * unmount system call
- */
-static int
-nfs_unmount(mp, mntflags, p)
- struct mount *mp;
- int mntflags;
- struct proc *p;
+int
+nfs4_getquota(struct nfsmount *nmp, vfs_context_t ctx, uid_t id, int type, struct dqblk *dqb)
{
- register struct nfsmount *nmp;
- struct vnode *vp;
- int error, flags = 0;
+ nfsnode_t np;
+ int error = 0, status, nfsvers, numops;
+ u_int64_t xid;
+ struct nfsm_chain nmreq, nmrep;
+ uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
+ thread_t thd = vfs_context_thread(ctx);
+ kauth_cred_t cred = vfs_context_ucred(ctx);
+ struct nfsreq_secinfo_args si;
- nmp = VFSTONFS(mp);
- /*
- * During a force unmount we want to...
- * Mark that we are doing a force unmount.
- * Make the mountpoint soft.
- */
- if (mntflags & MNT_FORCE) {
- flags |= FORCECLOSE;
- nmp->nm_state |= NFSSTA_FORCE;
- nmp->nm_flag |= NFSMNT_SOFT;
- }
- /*
- * Goes something like this..
- * - Call vflush() to clear out vnodes for this file system,
- * except for the swap files. Deal with them in 2nd pass.
- * It will do vgone making the vnode VBAD at that time.
- * - Decrement reference on the vnode representing remote root.
- * - Close the socket
- * - Free up the data structures
- */
- vp = nmp->nm_dvp;
-
- /*
- * Must handshake with nqnfs_clientd() if it is active.
- */
- nmp->nm_state |= NFSSTA_DISMINPROG;
- while (nmp->nm_inprog != NULLVP)
- (void) tsleep((caddr_t)&lbolt, PSOCK, "nfsdism", 0);
- /*
- * vflush will check for busy vnodes on mountpoint.
- * Will do the right thing for MNT_FORCE. That is, we should
- * not get EBUSY back.
- */
- error = vflush(mp, vp, SKIPSWAP | flags);
- if (mntflags & MNT_FORCE) {
- error = vflush(mp, NULLVP, flags); /* locks vp in the process */
- } else {
- if (vp->v_usecount > 1) {
- nmp->nm_state &= ~NFSSTA_DISMINPROG;
- return (EBUSY);
- }
- error = vflush(mp, vp, flags);
- }
+ if (type != USRQUOTA) /* NFSv4 only supports user quotas */
+ return (ENOTSUP);
- if (error) {
- nmp->nm_state &= ~NFSSTA_DISMINPROG;
- return (error);
- }
+ /* first check that the server supports any of the quota attributes */
+ if (!NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_AVAIL_HARD) &&
+ !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_AVAIL_SOFT) &&
+ !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_USED))
+ return (ENOTSUP);
/*
- * We are now committed to the unmount.
- * For NQNFS, let the server daemon free the nfsmount structure.
+ * The credential passed to the server needs to have
+ * an effective uid that matches the given uid.
*/
- if (nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_KERB))
- nmp->nm_state |= NFSSTA_DISMNT;
- nmp->nm_state &= ~NFSSTA_MOUNTED;
- if (nmp->nm_flag & NFSMNT_RESVPORT) {
- if (--nfs_resv_mounts == 0)
- nfs_bind_resv_thread_wake();
+ if (id != kauth_cred_getuid(cred)) {
+ struct posix_cred temp_pcred;
+ posix_cred_t pcred = posix_cred_get(cred);
+ bzero(&temp_pcred, sizeof(temp_pcred));
+ temp_pcred.cr_uid = id;
+ temp_pcred.cr_ngroups = pcred->cr_ngroups;
+ bcopy(pcred->cr_groups, temp_pcred.cr_groups, sizeof(temp_pcred.cr_groups));
+ cred = posix_cred_create(&temp_pcred);
+ if (!IS_VALID_CRED(cred))
+ return (ENOMEM);
+ } else {
+ kauth_cred_ref(cred);
}
- /*
- * Release the root vnode reference held by mountnfs()
- * vflush did the vgone for us when we didn't skip over
- * it in the MNT_FORCE case. (Thus vp can't be locked when
- * called vflush in non-skip vp case.)
- */
- vrele(vp);
- if (!(mntflags & MNT_FORCE))
- vgone(vp);
- mp->mnt_data = 0; /* don't want to end up using stale vp */
- nfs_disconnect(nmp);
- m_freem(nmp->nm_nam);
+ nfsvers = nmp->nm_vers;
+ np = nmp->nm_dnp;
+ if (!np)
+ error = ENXIO;
+ if (error || ((error = vnode_get(NFSTOV(np))))) {
+ kauth_cred_unref(&cred);
+ return(error);
+ }
- if ((nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_KERB)) == 0) {
- register struct nfsreq *rp;
- /*
- * Loop through outstanding request list and remove dangling
- * references to defunct nfsmount struct
- */
-#if NFSDIAG && 0
- if (hw_atomic_add(&nfsreqqusers, 1) != 1)
- nfsatompanic("unmount add");
- nfsbtlen = backtrace(&nfsbt, sizeof(nfsbt));
- nfsbtcpu = cpu_number();
- nfsbtthread = (int)(current_thread());
-#endif
+ NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
+ nfsm_chain_null(&nmreq);
+ nfsm_chain_null(&nmrep);
- for (rp = nfs_reqq.tqh_first; rp; rp = rp->r_chain.tqe_next)
- if (rp->r_nmp == nmp)
- rp->r_nmp = (struct nfsmount *)0;
-#if NFSDIAG && 0
- if (hw_atomic_sub(&nfsreqqusers, 1) != 0)
- nfsatompanic("unmount sub");
-#endif
- FREE_ZONE((caddr_t)nmp, sizeof (struct nfsmount), M_NFSMNT);
- }
- return (0);
+ // PUTFH + GETATTR
+ numops = 2;
+ nfsm_chain_build_alloc_init(error, &nmreq, 15 * NFSX_UNSIGNED);
+ nfsm_chain_add_compound_header(error, &nmreq, "quota", nmp->nm_minor_vers, numops);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
+ nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
+ numops--;
+ nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
+ NFS_CLEAR_ATTRIBUTES(bitmap);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_QUOTA_AVAIL_HARD);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_QUOTA_AVAIL_SOFT);
+ NFS_BITMAP_SET(bitmap, NFS_FATTR_QUOTA_USED);
+ nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, NULL);
+ nfsm_chain_build_done(error, &nmreq);
+ nfsm_assert(error, (numops == 0), EPROTO);
+ nfsmout_if(error);
+ error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, &nmrep, &xid, &status);
+ nfsm_chain_skip_tag(error, &nmrep);
+ nfsm_chain_get_32(error, &nmrep, numops);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
+ nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
+ nfsm_assert(error, NFSTONMP(np), ENXIO);
+ nfsmout_if(error);
+ error = nfs4_parsefattr(&nmrep, NULL, NULL, NULL, dqb, NULL);
+ nfsmout_if(error);
+ nfsm_assert(error, NFSTONMP(np), ENXIO);
+nfsmout:
+ nfsm_chain_cleanup(&nmreq);
+ nfsm_chain_cleanup(&nmrep);
+ vnode_put(NFSTOV(np));
+ kauth_cred_unref(&cred);
+ return (error);
}
-/*
- * Return root of a filesystem
- */
-static int
-nfs_root(mp, vpp)
- struct mount *mp;
- struct vnode **vpp;
+int
+nfs_vfs_quotactl(mount_t mp, int cmds, uid_t uid, caddr_t datap, vfs_context_t ctx)
{
- register struct vnode *vp;
struct nfsmount *nmp;
- int error, vpid;
+ int cmd, type, error, nfsvers;
+ uid_t euid = kauth_cred_getuid(vfs_context_ucred(ctx));
+ struct dqblk *dqb = (struct dqblk*)datap;
nmp = VFSTONFS(mp);
- vp = nmp->nm_dvp;
- vpid = vp->v_id;
- while (error = vget(vp, LK_EXCLUSIVE, current_proc())) {
- /* vget may return ENOENT if the dir changes while in vget */
- /* If that happens, try vget again, else return the error */
- if ((error != ENOENT) || (vp->v_id == vpid))
- return (error);
- vpid = vp->v_id;
+ if (nfs_mount_gone(nmp))
+ return (ENXIO);
+ nfsvers = nmp->nm_vers;
+
+ if (uid == ~0U)
+ uid = euid;
+
+ /* we can only support Q_GETQUOTA */
+ cmd = cmds >> SUBCMDSHIFT;
+ switch (cmd) {
+ case Q_GETQUOTA:
+ break;
+ case Q_QUOTAON:
+ case Q_QUOTAOFF:
+ case Q_SETQUOTA:
+ case Q_SETUSE:
+ case Q_SYNC:
+ case Q_QUOTASTAT:
+ return (ENOTSUP);
+ default:
+ return (EINVAL);
}
- if (vp->v_type == VNON)
- vp->v_type = VDIR;
- vp->v_flag |= VROOT;
- *vpp = vp;
- return (0);
-}
-extern int syncprt;
+ type = cmds & SUBCMDMASK;
+ if ((u_int)type >= MAXQUOTAS)
+ return (EINVAL);
+ if ((uid != euid) && ((error = vfs_context_suser(ctx))))
+ return (error);
+
+ if (vfs_busy(mp, LK_NOWAIT))
+ return (0);
+ bzero(dqb, sizeof(*dqb));
+ error = nmp->nm_funcs->nf_getquota(nmp, ctx, uid, type, dqb);
+ vfs_unbusy(mp);
+ return (error);
+}
+#endif
/*
* Flush out the buffer cache
*/
-/* ARGSUSED */
-static int
-nfs_sync(mp, waitfor, cred, p)
- struct mount *mp;
- int waitfor;
- struct ucred *cred;
- struct proc *p;
+int nfs_sync_callout(vnode_t, void *);
+
+struct nfs_sync_cargs {
+ vfs_context_t ctx;
+ int waitfor;
+ int error;
+};
+
+int
+nfs_sync_callout(vnode_t vp, void *arg)
{
- register struct vnode *vp;
- int error, allerror = 0;
+ struct nfs_sync_cargs *cargs = (struct nfs_sync_cargs*)arg;
+ nfsnode_t np = VTONFS(vp);
+ int error;
- /*
- * Force stale buffer cache information to be flushed.
- */
-loop:
- LIST_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) {
- int didhold;
- /*
- * If the vnode that we are about to sync is no longer
- * associated with this mount point, start over.
- */
- if (vp->v_mount != mp)
- goto loop;
- if (VOP_ISLOCKED(vp) || LIST_FIRST(&VTONFS(vp)->n_dirtyblkhd) == NULL)
- continue;
- if (vget(vp, LK_EXCLUSIVE, p))
- goto loop;
- didhold = ubc_hold(vp);
- error = VOP_FSYNC(vp, cred, waitfor, p);
- if (error)
- allerror = error;
- VOP_UNLOCK(vp, 0, p);
- if (didhold)
- ubc_rele(vp);
- vrele(vp);
+ if (np->n_flag & NREVOKE) {
+ vn_revoke(vp, REVOKEALL, cargs->ctx);
+ return (VNODE_RETURNED);
}
- return (allerror);
+
+ if (LIST_EMPTY(&np->n_dirtyblkhd))
+ return (VNODE_RETURNED);
+ if (np->n_wrbusy > 0)
+ return (VNODE_RETURNED);
+ if (np->n_bflag & (NBFLUSHINPROG|NBINVALINPROG))
+ return (VNODE_RETURNED);
+
+ error = nfs_flush(np, cargs->waitfor, vfs_context_thread(cargs->ctx), 0);
+ if (error)
+ cargs->error = error;
+
+ return (VNODE_RETURNED);
+}
+
+int
+nfs_vfs_sync(mount_t mp, int waitfor, vfs_context_t ctx)
+{
+ struct nfs_sync_cargs cargs;
+
+ cargs.waitfor = waitfor;
+ cargs.ctx = ctx;
+ cargs.error = 0;
+
+ vnode_iterate(mp, 0, nfs_sync_callout, &cargs);
+
+ return (cargs.error);
}
/*
* NFS flat namespace lookup.
* Currently unsupported.
*/
-/* ARGSUSED */
-static int
-nfs_vget(mp, ino, vpp)
- struct mount *mp;
- void *ino; /* XXX void* or ino_t? */
- struct vnode **vpp;
+/*ARGSUSED*/
+int
+nfs_vfs_vget(
+ __unused mount_t mp,
+ __unused ino64_t ino,
+ __unused vnode_t *vpp,
+ __unused vfs_context_t ctx)
{
- return (EOPNOTSUPP);
+ return (ENOTSUP);
}
/*
* At this point, this should never happen
*/
-/* ARGSUSED */
-static int
-nfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp)
- register struct mount *mp;
- struct fid *fhp;
- struct mbuf *nam;
- struct vnode **vpp;
- int *exflagsp;
- struct ucred **credanonp;
+/*ARGSUSED*/
+int
+nfs_vfs_fhtovp(
+ __unused mount_t mp,
+ __unused int fhlen,
+ __unused unsigned char *fhp,
+ __unused vnode_t *vpp,
+ __unused vfs_context_t ctx)
{
- return (EINVAL);
+ return (ENOTSUP);
}
/*
* Vnode pointer to File handle, should never happen either
*/
-/* ARGSUSED */
-static int
-nfs_vptofh(vp, fhp)
- struct vnode *vp;
- struct fid *fhp;
+/*ARGSUSED*/
+int
+nfs_vfs_vptofh(
+ __unused vnode_t vp,
+ __unused int *fhlenp,
+ __unused unsigned char *fhp,
+ __unused vfs_context_t ctx)
{
- return (EINVAL);
+ return (ENOTSUP);
}
/*
* Vfs start routine, a no-op.
*/
-/* ARGSUSED */
-static int
-nfs_start(mp, flags, p)
- struct mount *mp;
- int flags;
- struct proc *p;
+/*ARGSUSED*/
+int
+nfs_vfs_start(
+ __unused mount_t mp,
+ __unused int flags,
+ __unused vfs_context_t ctx)
{
return (0);
}
/*
- * Do operations associated with quotas, not supported
+ * Build the mount info buffer for NFS_MOUNTINFO.
*/
-/* ARGSUSED */
-static int
-nfs_quotactl(mp, cmd, uid, arg, p)
- struct mount *mp;
- int cmd;
- uid_t uid;
- caddr_t arg;
- struct proc *p;
+int
+nfs_mountinfo_assemble(struct nfsmount *nmp, struct xdrbuf *xb)
{
+ struct xdrbuf xbinfo, xborig;
+ char sotype[6];
+ uint32_t origargsvers, origargslength;
+ uint32_t infolength_offset, curargsopaquelength_offset, curargslength_offset, attrslength_offset, curargs_end_offset, end_offset;
+ uint32_t miattrs[NFS_MIATTR_BITMAP_LEN];
+ uint32_t miflags_mask[NFS_MIFLAG_BITMAP_LEN];
+ uint32_t miflags[NFS_MIFLAG_BITMAP_LEN];
+ uint32_t mattrs[NFS_MATTR_BITMAP_LEN];
+ uint32_t mflags_mask[NFS_MFLAG_BITMAP_LEN];
+ uint32_t mflags[NFS_MFLAG_BITMAP_LEN];
+ uint32_t loc, serv, addr, comp;
+ int i, timeo, error = 0;
+
+ /* set up mount info attr and flag bitmaps */
+ NFS_BITMAP_ZERO(miattrs, NFS_MIATTR_BITMAP_LEN);
+ NFS_BITMAP_SET(miattrs, NFS_MIATTR_FLAGS);
+ NFS_BITMAP_SET(miattrs, NFS_MIATTR_ORIG_ARGS);
+ NFS_BITMAP_SET(miattrs, NFS_MIATTR_CUR_ARGS);
+ NFS_BITMAP_SET(miattrs, NFS_MIATTR_CUR_LOC_INDEX);
+ NFS_BITMAP_ZERO(miflags_mask, NFS_MIFLAG_BITMAP_LEN);
+ NFS_BITMAP_ZERO(miflags, NFS_MIFLAG_BITMAP_LEN);
+ NFS_BITMAP_SET(miflags_mask, NFS_MIFLAG_DEAD);
+ NFS_BITMAP_SET(miflags_mask, NFS_MIFLAG_NOTRESP);
+ NFS_BITMAP_SET(miflags_mask, NFS_MIFLAG_RECOVERY);
+ if (nmp->nm_state & NFSSTA_DEAD)
+ NFS_BITMAP_SET(miflags, NFS_MIFLAG_DEAD);
+ if ((nmp->nm_state & (NFSSTA_TIMEO|NFSSTA_JUKEBOXTIMEO)) ||
+ ((nmp->nm_state & NFSSTA_LOCKTIMEO) && (nmp->nm_lockmode == NFS_LOCK_MODE_ENABLED)))
+ NFS_BITMAP_SET(miflags, NFS_MIFLAG_NOTRESP);
+ if (nmp->nm_state & NFSSTA_RECOVER)
+ NFS_BITMAP_SET(miflags, NFS_MIFLAG_RECOVERY);
+
+ /* get original mount args length */
+ xb_init_buffer(&xborig, nmp->nm_args, 2*XDRWORD);
+ xb_get_32(error, &xborig, origargsvers); /* version */
+ xb_get_32(error, &xborig, origargslength); /* args length */
+ nfsmerr_if(error);
+
+ /* set up current mount attributes bitmap */
+ NFS_BITMAP_ZERO(mattrs, NFS_MATTR_BITMAP_LEN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FLAGS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_VERSION);
+ if (nmp->nm_vers >= NFS_VER4)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_MINOR_VERSION);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READ_SIZE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_WRITE_SIZE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READDIR_SIZE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_READAHEAD);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_REG_MIN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_REG_MAX);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MIN);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_ATTRCACHE_DIR_MAX);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_LOCK_MODE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SECURITY);
+ if (nmp->nm_etype.selected < nmp->nm_etype.count)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_KERB_ETYPE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MAX_GROUP_LIST);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOCKET_TYPE);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_NFS_PORT);
+ if ((nmp->nm_vers < NFS_VER4) && nmp->nm_mountport)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MOUNT_PORT);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_REQUEST_TIMEOUT);
+ if (NMFLAG(nmp, SOFT))
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SOFT_RETRY_COUNT);
+ if (nmp->nm_deadtimeout)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_DEAD_TIMEOUT);
+ if (nmp->nm_fh)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FH);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_FS_LOCATIONS);
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFLAGS);
+ if (origargsvers < NFS_ARGSVERSION_XDR)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_MNTFROM);
+ if (nmp->nm_realm)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_REALM);
+ if (nmp->nm_principal)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_PRINCIPAL);
+ if (nmp->nm_sprinc)
+ NFS_BITMAP_SET(mattrs, NFS_MATTR_SVCPRINCIPAL);
+
+ /* set up current mount flags bitmap */
+ /* first set the flags that we will be setting - either on OR off */
+ NFS_BITMAP_ZERO(mflags_mask, NFS_MFLAG_BITMAP_LEN);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_SOFT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_INTR);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RESVPORT);
+ if (nmp->nm_sotype == SOCK_DGRAM)
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOCONNECT);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_DUMBTIMER);
+ if (nmp->nm_vers < NFS_VER4)
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_CALLUMNT);
+ if (nmp->nm_vers >= NFS_VER3)
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_RDIRPLUS);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NONEGNAMECACHE);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_MUTEJUKEBOX);
+ if (nmp->nm_vers >= NFS_VER4) {
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_EPHEMERAL);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOCALLBACK);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NAMEDATTR);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOACL);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_ACLONLY);
+ }
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NFC);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_NOQUOTA);
+ if (nmp->nm_vers < NFS_VER4)
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_MNTUDP);
+ NFS_BITMAP_SET(mflags_mask, NFS_MFLAG_MNTQUICK);
+ /* now set the flags that should be set */
+ NFS_BITMAP_ZERO(mflags, NFS_MFLAG_BITMAP_LEN);
+ if (NMFLAG(nmp, SOFT))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_SOFT);
+ if (NMFLAG(nmp, INTR))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_INTR);
+ if (NMFLAG(nmp, RESVPORT))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RESVPORT);
+ if ((nmp->nm_sotype == SOCK_DGRAM) && NMFLAG(nmp, NOCONNECT))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOCONNECT);
+ if (NMFLAG(nmp, DUMBTIMER))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_DUMBTIMER);
+ if ((nmp->nm_vers < NFS_VER4) && NMFLAG(nmp, CALLUMNT))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_CALLUMNT);
+ if ((nmp->nm_vers >= NFS_VER3) && NMFLAG(nmp, RDIRPLUS))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_RDIRPLUS);
+ if (NMFLAG(nmp, NONEGNAMECACHE))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NONEGNAMECACHE);
+ if (NMFLAG(nmp, MUTEJUKEBOX))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_MUTEJUKEBOX);
+ if (nmp->nm_vers >= NFS_VER4) {
+ if (NMFLAG(nmp, EPHEMERAL))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_EPHEMERAL);
+ if (NMFLAG(nmp, NOCALLBACK))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOCALLBACK);
+ if (NMFLAG(nmp, NAMEDATTR))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NAMEDATTR);
+ if (NMFLAG(nmp, NOACL))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOACL);
+ if (NMFLAG(nmp, ACLONLY))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_ACLONLY);
+ }
+ if (NMFLAG(nmp, NFC))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NFC);
+ if (NMFLAG(nmp, NOQUOTA) || ((nmp->nm_vers >= NFS_VER4) &&
+ !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_AVAIL_HARD) &&
+ !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_AVAIL_SOFT) &&
+ !NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_supp_attr, NFS_FATTR_QUOTA_USED)))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_NOQUOTA);
+ if ((nmp->nm_vers < NFS_VER4) && NMFLAG(nmp, MNTUDP))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_MNTUDP);
+ if (NMFLAG(nmp, MNTQUICK))
+ NFS_BITMAP_SET(mflags, NFS_MFLAG_MNTQUICK);
+
+ /* assemble info buffer: */
+ xb_init_buffer(&xbinfo, NULL, 0);
+ xb_add_32(error, &xbinfo, NFS_MOUNT_INFO_VERSION);
+ infolength_offset = xb_offset(&xbinfo);
+ xb_add_32(error, &xbinfo, 0);
+ xb_add_bitmap(error, &xbinfo, miattrs, NFS_MIATTR_BITMAP_LEN);
+ xb_add_bitmap(error, &xbinfo, miflags, NFS_MIFLAG_BITMAP_LEN);
+ xb_add_32(error, &xbinfo, origargslength);
+ if (!error)
+ error = xb_add_bytes(&xbinfo, nmp->nm_args, origargslength, 0);
- return (EOPNOTSUPP);
+ /* the opaque byte count for the current mount args values: */
+ curargsopaquelength_offset = xb_offset(&xbinfo);
+ xb_add_32(error, &xbinfo, 0);
+
+ /* Encode current mount args values */
+ xb_add_32(error, &xbinfo, NFS_ARGSVERSION_XDR);
+ curargslength_offset = xb_offset(&xbinfo);
+ xb_add_32(error, &xbinfo, 0);
+ xb_add_32(error, &xbinfo, NFS_XDRARGS_VERSION_0);
+ xb_add_bitmap(error, &xbinfo, mattrs, NFS_MATTR_BITMAP_LEN);
+ attrslength_offset = xb_offset(&xbinfo);
+ xb_add_32(error, &xbinfo, 0);
+ xb_add_bitmap(error, &xbinfo, mflags_mask, NFS_MFLAG_BITMAP_LEN);
+ xb_add_bitmap(error, &xbinfo, mflags, NFS_MFLAG_BITMAP_LEN);
+ xb_add_32(error, &xbinfo, nmp->nm_vers); /* NFS_VERSION */
+ if (nmp->nm_vers >= NFS_VER4)
+ xb_add_32(error, &xbinfo, nmp->nm_minor_vers); /* NFS_MINOR_VERSION */
+ xb_add_32(error, &xbinfo, nmp->nm_rsize); /* READ_SIZE */
+ xb_add_32(error, &xbinfo, nmp->nm_wsize); /* WRITE_SIZE */
+ xb_add_32(error, &xbinfo, nmp->nm_readdirsize); /* READDIR_SIZE */
+ xb_add_32(error, &xbinfo, nmp->nm_readahead); /* READAHEAD */
+ xb_add_32(error, &xbinfo, nmp->nm_acregmin); /* ATTRCACHE_REG_MIN */
+ xb_add_32(error, &xbinfo, 0); /* ATTRCACHE_REG_MIN */
+ xb_add_32(error, &xbinfo, nmp->nm_acregmax); /* ATTRCACHE_REG_MAX */
+ xb_add_32(error, &xbinfo, 0); /* ATTRCACHE_REG_MAX */
+ xb_add_32(error, &xbinfo, nmp->nm_acdirmin); /* ATTRCACHE_DIR_MIN */
+ xb_add_32(error, &xbinfo, 0); /* ATTRCACHE_DIR_MIN */
+ xb_add_32(error, &xbinfo, nmp->nm_acdirmax); /* ATTRCACHE_DIR_MAX */
+ xb_add_32(error, &xbinfo, 0); /* ATTRCACHE_DIR_MAX */
+ xb_add_32(error, &xbinfo, nmp->nm_lockmode); /* LOCK_MODE */
+ if (nmp->nm_sec.count) {
+ xb_add_32(error, &xbinfo, nmp->nm_sec.count); /* SECURITY */
+ nfsmerr_if(error);
+ for (i=0; i < nmp->nm_sec.count; i++)
+ xb_add_32(error, &xbinfo, nmp->nm_sec.flavors[i]);
+ } else if (nmp->nm_servsec.count) {
+ xb_add_32(error, &xbinfo, nmp->nm_servsec.count); /* SECURITY */
+ nfsmerr_if(error);
+ for (i=0; i < nmp->nm_servsec.count; i++)
+ xb_add_32(error, &xbinfo, nmp->nm_servsec.flavors[i]);
+ } else {
+ xb_add_32(error, &xbinfo, 1); /* SECURITY */
+ xb_add_32(error, &xbinfo, nmp->nm_auth);
+ }
+ if (nmp->nm_etype.selected < nmp->nm_etype.count) {
+ xb_add_32(error, &xbinfo, nmp->nm_etype.count);
+ xb_add_32(error, &xbinfo, nmp->nm_etype.selected);
+ for (uint32_t j=0; j < nmp->nm_etype.count; j++)
+ xb_add_32(error, &xbinfo, nmp->nm_etype.etypes[j]);
+ nfsmerr_if(error);
+ }
+ xb_add_32(error, &xbinfo, nmp->nm_numgrps); /* MAX_GROUP_LIST */
+ nfsmerr_if(error);
+ snprintf(sotype, sizeof(sotype), "%s%s", (nmp->nm_sotype == SOCK_DGRAM) ? "udp" : "tcp",
+ nmp->nm_sofamily ? (nmp->nm_sofamily == AF_INET) ? "4" : "6" : "");
+ xb_add_string(error, &xbinfo, sotype, strlen(sotype)); /* SOCKET_TYPE */
+ xb_add_32(error, &xbinfo, ntohs(((struct sockaddr_in*)nmp->nm_saddr)->sin_port)); /* NFS_PORT */
+ if ((nmp->nm_vers < NFS_VER4) && nmp->nm_mountport)
+ xb_add_32(error, &xbinfo, nmp->nm_mountport); /* MOUNT_PORT */
+ timeo = (nmp->nm_timeo * 10) / NFS_HZ;
+ xb_add_32(error, &xbinfo, timeo/10); /* REQUEST_TIMEOUT */
+ xb_add_32(error, &xbinfo, (timeo%10)*100000000); /* REQUEST_TIMEOUT */
+ if (NMFLAG(nmp, SOFT))
+ xb_add_32(error, &xbinfo, nmp->nm_retry); /* SOFT_RETRY_COUNT */
+ if (nmp->nm_deadtimeout) {
+ xb_add_32(error, &xbinfo, nmp->nm_deadtimeout); /* DEAD_TIMEOUT */
+ xb_add_32(error, &xbinfo, 0); /* DEAD_TIMEOUT */
+ }
+ if (nmp->nm_fh)
+ xb_add_fh(error, &xbinfo, &nmp->nm_fh->fh_data[0], nmp->nm_fh->fh_len); /* FH */
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_numlocs); /* FS_LOCATIONS */
+ for (loc = 0; !error && (loc < nmp->nm_locations.nl_numlocs); loc++) {
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_servcount);
+ for (serv = 0; !error && (serv < nmp->nm_locations.nl_locations[loc]->nl_servcount); serv++) {
+ xb_add_string(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_name,
+ strlen(nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_name));
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_addrcount);
+ for (addr = 0; !error && (addr < nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_addrcount); addr++)
+ xb_add_string(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_addresses[addr],
+ strlen(nmp->nm_locations.nl_locations[loc]->nl_servers[serv]->ns_addresses[addr]));
+ xb_add_32(error, &xbinfo, 0); /* empty server info */
+ }
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_path.np_compcount);
+ for (comp = 0; !error && (comp < nmp->nm_locations.nl_locations[loc]->nl_path.np_compcount); comp++)
+ xb_add_string(error, &xbinfo, nmp->nm_locations.nl_locations[loc]->nl_path.np_components[comp],
+ strlen(nmp->nm_locations.nl_locations[loc]->nl_path.np_components[comp]));
+ xb_add_32(error, &xbinfo, 0); /* empty fs location info */
+ }
+ xb_add_32(error, &xbinfo, vfs_flags(nmp->nm_mountp)); /* MNTFLAGS */
+ if (origargsvers < NFS_ARGSVERSION_XDR)
+ xb_add_string(error, &xbinfo, vfs_statfs(nmp->nm_mountp)->f_mntfromname,
+ strlen(vfs_statfs(nmp->nm_mountp)->f_mntfromname)); /* MNTFROM */
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_REALM))
+ xb_add_string(error, &xbinfo, nmp->nm_realm, strlen(nmp->nm_realm));
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_PRINCIPAL))
+ xb_add_string(error, &xbinfo, nmp->nm_principal, strlen(nmp->nm_principal));
+ if (NFS_BITMAP_ISSET(mattrs, NFS_MATTR_SVCPRINCIPAL))
+ xb_add_string(error, &xbinfo, nmp->nm_sprinc, strlen(nmp->nm_sprinc));
+
+ curargs_end_offset = xb_offset(&xbinfo);
+
+ /* NFS_MIATTR_CUR_LOC_INDEX */
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_current.nli_flags);
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_current.nli_loc);
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_current.nli_serv);
+ xb_add_32(error, &xbinfo, nmp->nm_locations.nl_current.nli_addr);
+
+ xb_build_done(error, &xbinfo);
+
+ /* update opaque counts */
+ end_offset = xb_offset(&xbinfo);
+ if (!error) {
+ error = xb_seek(&xbinfo, attrslength_offset);
+ xb_add_32(error, &xbinfo, curargs_end_offset - attrslength_offset - XDRWORD/*don't include length field*/);
+ }
+ if (!error) {
+ error = xb_seek(&xbinfo, curargslength_offset);
+ xb_add_32(error, &xbinfo, curargs_end_offset - curargslength_offset + XDRWORD/*version*/);
+ }
+ if (!error) {
+ error = xb_seek(&xbinfo, curargsopaquelength_offset);
+ xb_add_32(error, &xbinfo, curargs_end_offset - curargslength_offset + XDRWORD/*version*/);
+ }
+ if (!error) {
+ error = xb_seek(&xbinfo, infolength_offset);
+ xb_add_32(error, &xbinfo, end_offset - infolength_offset + XDRWORD/*version*/);
+ }
+ nfsmerr_if(error);
+
+ /* copy result xdrbuf to caller */
+ *xb = xbinfo;
+
+ /* and mark the local copy as not needing cleanup */
+ xbinfo.xb_flags &= ~XB_CLEANUP;
+nfsmerr:
+ xb_cleanup(&xbinfo);
+ return (error);
}
/*
* Do that sysctl thang...
*/
-static int
-nfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
- size_t newlen, struct proc *p)
+int
+nfs_vfs_sysctl(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp,
+ user_addr_t newp, size_t newlen, vfs_context_t ctx)
{
- int error;
- struct sysctl_req *req;
- struct vfsidctl vc;
- struct mount *mp;
- struct nfsmount *nmp;
+ int error = 0, val;
+#ifndef CONFIG_EMBEDDED
+ int softnobrowse;
+#endif
+ struct sysctl_req *req = NULL;
+ union union_vfsidctl vc;
+ mount_t mp;
+ struct nfsmount *nmp = NULL;
struct vfsquery vq;
+ struct nfsreq *rq;
+ boolean_t is_64_bit;
+ fsid_t fsid;
+ struct xdrbuf xb;
+ struct netfs_status *nsp = NULL;
+ int timeoutmask;
+ uint pos, totlen, count, numThreads;
+#if NFSSERVER
+ struct nfs_exportfs *nxfs;
+ struct nfs_export *nx;
+ struct nfs_active_user_list *ulist;
+ struct nfs_export_stat_desc stat_desc = {};
+ struct nfs_export_stat_rec statrec;
+ struct nfs_user_stat_node *unode, *unode_next;
+ struct nfs_user_stat_desc ustat_desc = {};
+ struct nfs_user_stat_user_rec ustat_rec;
+ struct nfs_user_stat_path_rec upath_rec;
+ uint bytes_avail, bytes_total, recs_copied;
+ uint numExports, numRecs;
+#endif /* NFSSERVER */
/*
* All names at this level are terminal.
*/
- if(namelen > 1)
- return ENOTDIR; /* overloaded */
+ if (namelen > 1)
+ return (ENOTDIR); /* overloaded */
+
+ is_64_bit = vfs_context_is64bit(ctx);
/* common code for "new style" VFS_CTL sysctl, get the mount. */
switch (name[0]) {
case VFS_CTL_TIMEO:
+ case VFS_CTL_NOLOCKS:
+ case VFS_CTL_NSTATUS:
+#ifndef CONFIG_EMBEDDED
case VFS_CTL_QUERY:
- req = oldp;
- error = SYSCTL_IN(req, &vc, sizeof(vc));
+#endif
+ req = CAST_DOWN(struct sysctl_req *, oldp);
+ if (req == NULL) {
+ return EFAULT;
+ }
+ error = SYSCTL_IN(req, &vc, is_64_bit? sizeof(vc.vc64):sizeof(vc.vc32));
if (error)
return (error);
- mp = vfs_getvfs(&vc.vc_fsid);
+ mp = vfs_getvfs(&vc.vc32.vc_fsid); /* works for 32 and 64 */
if (mp == NULL)
return (ENOENT);
nmp = VFSTONFS(mp);
- if (nmp == NULL)
+ if (!nmp)
return (ENOENT);
bzero(&vq, sizeof(vq));
- VCTLTOREQ(&vc, req);
+ req->newidx = 0;
+ if (is_64_bit) {
+ req->newptr = vc.vc64.vc_ptr;
+ req->newlen = (size_t)vc.vc64.vc_len;
+ } else {
+ req->newptr = CAST_USER_ADDR_T(vc.vc32.vc_ptr);
+ req->newlen = vc.vc32.vc_len;
+ }
+ break;
+#if CONFIG_EMBEDDED
+ case VFS_CTL_QUERY:
+ return EPERM;
+#endif
}
switch(name[0]) {
case NFS_NFSSTATS:
- if(!oldp) {
+ if (!oldp) {
*oldlenp = sizeof nfsstats;
- return 0;
+ return (0);
}
- if(*oldlenp < sizeof nfsstats) {
+ if (*oldlenp < sizeof nfsstats) {
*oldlenp = sizeof nfsstats;
- return ENOMEM;
+ return (ENOMEM);
}
error = copyout(&nfsstats, oldp, sizeof nfsstats);
if (error)
return (error);
- if(newp && newlen != sizeof nfsstats)
- return EINVAL;
+ if (newp && newlen != sizeof nfsstats)
+ return (EINVAL);
- if(newp) {
+ if (newp)
return copyin(newp, &nfsstats, sizeof nfsstats);
+ return (0);
+ case NFS_MOUNTINFO:
+ /* read in the fsid */
+ if (*oldlenp < sizeof(fsid))
+ return (EINVAL);
+ if ((error = copyin(oldp, &fsid, sizeof(fsid))))
+ return (error);
+ /* swizzle it back to host order */
+ fsid.val[0] = ntohl(fsid.val[0]);
+ fsid.val[1] = ntohl(fsid.val[1]);
+ /* find mount and make sure it's NFS */
+ if (((mp = vfs_getvfs(&fsid))) == NULL)
+ return (ENOENT);
+ if (strcmp(mp->mnt_vfsstat.f_fstypename, "nfs"))
+ return (EINVAL);
+ if (((nmp = VFSTONFS(mp))) == NULL)
+ return (ENOENT);
+ xb_init(&xb, 0);
+ if ((error = nfs_mountinfo_assemble(nmp, &xb)))
+ return (error);
+ if (*oldlenp < xb.xb_u.xb_buffer.xbb_len)
+ error = ENOMEM;
+ else
+ error = copyout(xb_buffer_base(&xb), oldp, xb.xb_u.xb_buffer.xbb_len);
+ *oldlenp = xb.xb_u.xb_buffer.xbb_len;
+ xb_cleanup(&xb);
+ break;
+#if NFSSERVER
+ case NFS_EXPORTSTATS:
+ /* setup export stat descriptor */
+ stat_desc.rec_vers = NFS_EXPORT_STAT_REC_VERSION;
+
+ if (!nfsrv_is_initialized()) {
+ stat_desc.rec_count = 0;
+ if (oldp && (*oldlenp >= sizeof(struct nfs_export_stat_desc)))
+ error = copyout(&stat_desc, oldp, sizeof(struct nfs_export_stat_desc));
+ *oldlenp = sizeof(struct nfs_export_stat_desc);
+ return (error);
+ }
+
+ /* Count the number of exported directories */
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ numExports = 0;
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next)
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next)
+ numExports += 1;
+
+ /* update stat descriptor's export record count */
+ stat_desc.rec_count = numExports;
+
+ /* calculate total size of required buffer */
+ totlen = sizeof(struct nfs_export_stat_desc) + (numExports * sizeof(struct nfs_export_stat_rec));
+
+ /* Check caller's buffer */
+ if (oldp == 0) {
+ lck_rw_done(&nfsrv_export_rwlock);
+ /* indicate required buffer len */
+ *oldlenp = totlen;
+ return (0);
+ }
+
+ /* We require the caller's buffer to be at least large enough to hold the descriptor */
+ if (*oldlenp < sizeof(struct nfs_export_stat_desc)) {
+ lck_rw_done(&nfsrv_export_rwlock);
+ /* indicate required buffer len */
+ *oldlenp = totlen;
+ return (ENOMEM);
+ }
+
+ /* indicate required buffer len */
+ *oldlenp = totlen;
+
+ /* check if export table is empty */
+ if (!numExports) {
+ lck_rw_done(&nfsrv_export_rwlock);
+ error = copyout(&stat_desc, oldp, sizeof(struct nfs_export_stat_desc));
+ return (error);
+ }
+
+ /* calculate how many actual export stat records fit into caller's buffer */
+ numRecs = (*oldlenp - sizeof(struct nfs_export_stat_desc)) / sizeof(struct nfs_export_stat_rec);
+
+ if (!numRecs) {
+ /* caller's buffer can only accomodate descriptor */
+ lck_rw_done(&nfsrv_export_rwlock);
+ stat_desc.rec_count = 0;
+ error = copyout(&stat_desc, oldp, sizeof(struct nfs_export_stat_desc));
+ return (error);
+ }
+
+ /* adjust to actual number of records to copyout to caller's buffer */
+ if (numRecs > numExports)
+ numRecs = numExports;
+
+ /* set actual number of records we are returning */
+ stat_desc.rec_count = numRecs;
+
+ /* first copy out the stat descriptor */
+ pos = 0;
+ error = copyout(&stat_desc, oldp + pos, sizeof(struct nfs_export_stat_desc));
+ if (error) {
+ lck_rw_done(&nfsrv_export_rwlock);
+ return (error);
+ }
+ pos += sizeof(struct nfs_export_stat_desc);
+
+ /* Loop through exported directories */
+ count = 0;
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+
+ if (count >= numRecs)
+ break;
+
+ /* build exported filesystem path */
+ memset(statrec.path, 0, sizeof(statrec.path));
+ snprintf(statrec.path, sizeof(statrec.path), "%s%s%s",
+ nxfs->nxfs_path, ((nxfs->nxfs_path[1] && nx->nx_path[0]) ? "/" : ""),
+ nx->nx_path);
+
+ /* build the 64-bit export stat counters */
+ statrec.ops = ((uint64_t)nx->nx_stats.ops.hi << 32) |
+ nx->nx_stats.ops.lo;
+ statrec.bytes_read = ((uint64_t)nx->nx_stats.bytes_read.hi << 32) |
+ nx->nx_stats.bytes_read.lo;
+ statrec.bytes_written = ((uint64_t)nx->nx_stats.bytes_written.hi << 32) |
+ nx->nx_stats.bytes_written.lo;
+ error = copyout(&statrec, oldp + pos, sizeof(statrec));
+ if (error) {
+ lck_rw_done(&nfsrv_export_rwlock);
+ return (error);
+ }
+ /* advance buffer position */
+ pos += sizeof(statrec);
+ }
+ }
+ lck_rw_done(&nfsrv_export_rwlock);
+ break;
+ case NFS_USERSTATS:
+ /* init structures used for copying out of kernel */
+ ustat_desc.rec_vers = NFS_USER_STAT_REC_VERSION;
+ ustat_rec.rec_type = NFS_USER_STAT_USER_REC;
+ upath_rec.rec_type = NFS_USER_STAT_PATH_REC;
+
+ /* initialize counters */
+ bytes_total = sizeof(struct nfs_user_stat_desc);
+ bytes_avail = *oldlenp;
+ recs_copied = 0;
+
+ if (!nfsrv_is_initialized()) /* NFS server not initialized, so no stats */
+ goto ustat_skip;
+
+ /* reclaim old expired user nodes */
+ nfsrv_active_user_list_reclaim();
+
+ /* reserve space for the buffer descriptor */
+ if (bytes_avail >= sizeof(struct nfs_user_stat_desc))
+ bytes_avail -= sizeof(struct nfs_user_stat_desc);
+ else
+ bytes_avail = 0;
+
+ /* put buffer position past the buffer descriptor */
+ pos = sizeof(struct nfs_user_stat_desc);
+
+ /* Loop through exported directories */
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ /* copy out path */
+ if (bytes_avail >= sizeof(struct nfs_user_stat_path_rec)) {
+ memset(upath_rec.path, 0, sizeof(upath_rec.path));
+ snprintf(upath_rec.path, sizeof(upath_rec.path), "%s%s%s",
+ nxfs->nxfs_path, ((nxfs->nxfs_path[1] && nx->nx_path[0]) ? "/" : ""),
+ nx->nx_path);
+
+ error = copyout(&upath_rec, oldp + pos, sizeof(struct nfs_user_stat_path_rec));
+ if (error) {
+ /* punt */
+ goto ustat_done;
+ }
+
+ pos += sizeof(struct nfs_user_stat_path_rec);
+ bytes_avail -= sizeof(struct nfs_user_stat_path_rec);
+ recs_copied++;
+ }
+ else {
+ /* Caller's buffer is exhausted */
+ bytes_avail = 0;
+ }
+
+ bytes_total += sizeof(struct nfs_user_stat_path_rec);
+
+ /* 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);
+
+ /* copy out node if there is space */
+ if (bytes_avail >= sizeof(struct nfs_user_stat_user_rec)) {
+ /* prepare a user stat rec for copying out */
+ ustat_rec.uid = unode->uid;
+ memset(&ustat_rec.sock, 0, sizeof(ustat_rec.sock));
+ bcopy(&unode->sock, &ustat_rec.sock, unode->sock.ss_len);
+ ustat_rec.ops = unode->ops;
+ ustat_rec.bytes_read = unode->bytes_read;
+ ustat_rec.bytes_written = unode->bytes_written;
+ ustat_rec.tm_start = unode->tm_start;
+ ustat_rec.tm_last = unode->tm_last;
+
+ error = copyout(&ustat_rec, oldp + pos, sizeof(struct nfs_user_stat_user_rec));
+
+ if (error) {
+ /* punt */
+ lck_mtx_unlock(&ulist->user_mutex);
+ goto ustat_done;
+ }
+
+ pos += sizeof(struct nfs_user_stat_user_rec);
+ bytes_avail -= sizeof(struct nfs_user_stat_user_rec);
+ recs_copied++;
+ }
+ else {
+ /* Caller's buffer is exhausted */
+ bytes_avail = 0;
+ }
+ bytes_total += sizeof(struct nfs_user_stat_user_rec);
+ }
+ /* can unlock this export's list now */
+ lck_mtx_unlock(&ulist->user_mutex);
+ }
+ }
+
+ustat_done:
+ /* unlock the export table */
+ lck_rw_done(&nfsrv_export_rwlock);
+
+ustat_skip:
+ /* indicate number of actual records copied */
+ ustat_desc.rec_count = recs_copied;
+
+ if (!error) {
+ /* check if there was enough room for the buffer descriptor */
+ if (*oldlenp >= sizeof(struct nfs_user_stat_desc))
+ error = copyout(&ustat_desc, oldp, sizeof(struct nfs_user_stat_desc));
+ else
+ error = ENOMEM;
+
+ /* always indicate required buffer size */
+ *oldlenp = bytes_total;
}
- return 0;
+ break;
+ case NFS_USERCOUNT:
+ if (!oldp) {
+ *oldlenp = sizeof(nfsrv_user_stat_node_count);
+ return (0);
+ }
+
+ if (*oldlenp < sizeof(nfsrv_user_stat_node_count)) {
+ *oldlenp = sizeof(nfsrv_user_stat_node_count);
+ return (ENOMEM);
+ }
+
+ if (nfsrv_is_initialized()) {
+ /* reclaim old expired user nodes */
+ nfsrv_active_user_list_reclaim();
+ }
+
+ error = copyout(&nfsrv_user_stat_node_count, oldp, sizeof(nfsrv_user_stat_node_count));
+ break;
+#endif /* NFSSERVER */
+ case VFS_CTL_NOLOCKS:
+ if (req->oldptr != USER_ADDR_NULL) {
+ lck_mtx_lock(&nmp->nm_lock);
+ val = (nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED) ? 1 : 0;
+ lck_mtx_unlock(&nmp->nm_lock);
+ error = SYSCTL_OUT(req, &val, sizeof(val));
+ if (error)
+ return (error);
+ }
+ if (req->newptr != USER_ADDR_NULL) {
+ error = SYSCTL_IN(req, &val, sizeof(val));
+ if (error)
+ return (error);
+ lck_mtx_lock(&nmp->nm_lock);
+ if (nmp->nm_lockmode == NFS_LOCK_MODE_LOCAL) {
+ /* can't toggle locks when using local locks */
+ error = EINVAL;
+ } else if ((nmp->nm_vers >= NFS_VER4) && val) {
+ /* can't disable locks for NFSv4 */
+ error = EINVAL;
+ } else if (val) {
+ if ((nmp->nm_vers <= NFS_VER3) && (nmp->nm_lockmode == NFS_LOCK_MODE_ENABLED))
+ nfs_lockd_mount_unregister(nmp);
+ nmp->nm_lockmode = NFS_LOCK_MODE_DISABLED;
+ nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
+ } else {
+ if ((nmp->nm_vers <= NFS_VER3) && (nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED))
+ nfs_lockd_mount_register(nmp);
+ nmp->nm_lockmode = NFS_LOCK_MODE_ENABLED;
+ }
+ lck_mtx_unlock(&nmp->nm_lock);
+ }
+ break;
+#ifndef CONFIG_EMBEDDED
case VFS_CTL_QUERY:
- if ((nmp->nm_state & NFSSTA_TIMEO))
+ lck_mtx_lock(&nmp->nm_lock);
+ /* XXX don't allow users to know about/disconnect unresponsive, soft, nobrowse mounts */
+ softnobrowse = (NMFLAG(nmp, SOFT) && (vfs_flags(nmp->nm_mountp) & MNT_DONTBROWSE));
+ if (!softnobrowse && (nmp->nm_state & NFSSTA_TIMEO))
+ vq.vq_flags |= VQ_NOTRESP;
+ if (!softnobrowse && (nmp->nm_state & NFSSTA_JUKEBOXTIMEO) && !NMFLAG(nmp, MUTEJUKEBOX))
vq.vq_flags |= VQ_NOTRESP;
+ if (!softnobrowse && (nmp->nm_state & NFSSTA_LOCKTIMEO) &&
+ (nmp->nm_lockmode == NFS_LOCK_MODE_ENABLED))
+ vq.vq_flags |= VQ_NOTRESP;
+ if (nmp->nm_state & NFSSTA_DEAD)
+ vq.vq_flags |= VQ_DEAD;
+ lck_mtx_unlock(&nmp->nm_lock);
error = SYSCTL_OUT(req, &vq, sizeof(vq));
break;
+#endif
case VFS_CTL_TIMEO:
- if (req->oldptr != NULL) {
- error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay,
- sizeof(nmp->nm_tprintf_initial_delay));
+ if (req->oldptr != USER_ADDR_NULL) {
+ lck_mtx_lock(&nmp->nm_lock);
+ val = nmp->nm_tprintf_initial_delay;
+ lck_mtx_unlock(&nmp->nm_lock);
+ error = SYSCTL_OUT(req, &val, sizeof(val));
if (error)
return (error);
}
- if (req->newptr != NULL) {
- error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay,
- sizeof(nmp->nm_tprintf_initial_delay));
+ if (req->newptr != USER_ADDR_NULL) {
+ error = SYSCTL_IN(req, &val, sizeof(val));
if (error)
return (error);
- if (nmp->nm_tprintf_initial_delay < 0)
+ lck_mtx_lock(&nmp->nm_lock);
+ if (val < 0)
nmp->nm_tprintf_initial_delay = 0;
+ else
+ nmp->nm_tprintf_initial_delay = val;
+ lck_mtx_unlock(&nmp->nm_lock);
}
break;
+ case VFS_CTL_NSTATUS:
+ /*
+ * Return the status of this mount. This is much more
+ * information than VFS_CTL_QUERY. In addition to the
+ * vq_flags return the significant mount options along
+ * with the list of threads blocked on the mount and
+ * how long the threads have been waiting.
+ */
+
+ lck_mtx_lock(nfs_request_mutex);
+ lck_mtx_lock(&nmp->nm_lock);
+
+ /*
+ * Count the number of requests waiting for a reply.
+ * Note: there could be multiple requests from the same thread.
+ */
+ numThreads = 0;
+ TAILQ_FOREACH(rq, &nfs_reqq, r_chain) {
+ if (rq->r_nmp == nmp)
+ numThreads++;
+ }
+
+ /* Calculate total size of result buffer */
+ totlen = sizeof(struct netfs_status) + (numThreads * sizeof(uint64_t));
+
+ if (req->oldptr == USER_ADDR_NULL) { // Caller is querying buffer size
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_unlock(nfs_request_mutex);
+ return SYSCTL_OUT(req, NULL, totlen);
+ }
+ if (req->oldlen < totlen) { // Check if caller's buffer is big enough
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_unlock(nfs_request_mutex);
+ return (ERANGE);
+ }
+
+ MALLOC(nsp, struct netfs_status *, totlen, M_TEMP, M_WAITOK|M_ZERO);
+ if (nsp == NULL) {
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_unlock(nfs_request_mutex);
+ return (ENOMEM);
+ }
+ timeoutmask = NFSSTA_TIMEO | NFSSTA_LOCKTIMEO | NFSSTA_JUKEBOXTIMEO;
+ if (nmp->nm_state & timeoutmask)
+ nsp->ns_status |= VQ_NOTRESP;
+ if (nmp->nm_state & NFSSTA_DEAD)
+ nsp->ns_status |= VQ_DEAD;
+
+ (void) nfs_mountopts(nmp, nsp->ns_mountopts, sizeof(nsp->ns_mountopts));
+ nsp->ns_threadcount = numThreads;
+
+ /*
+ * Get the thread ids of threads waiting for a reply
+ * and find the longest wait time.
+ */
+ if (numThreads > 0) {
+ struct timeval now;
+ time_t sendtime;
+
+ microuptime(&now);
+ count = 0;
+ sendtime = now.tv_sec;
+ TAILQ_FOREACH(rq, &nfs_reqq, r_chain) {
+ if (rq->r_nmp == nmp) {
+ if (rq->r_start < sendtime)
+ sendtime = rq->r_start;
+ // A thread_id of zero is used to represent an async I/O request.
+ nsp->ns_threadids[count] =
+ rq->r_thread ? thread_tid(rq->r_thread) : 0;
+ if (++count >= numThreads)
+ break;
+ }
+ }
+ nsp->ns_waittime = now.tv_sec - sendtime;
+ }
+
+ lck_mtx_unlock(&nmp->nm_lock);
+ lck_mtx_unlock(nfs_request_mutex);
+
+ error = SYSCTL_OUT(req, nsp, totlen);
+ FREE(nsp, M_TEMP);
+ break;
default:
return (ENOTSUP);
}
return (error);
}
-
projects / apple / xnu.git / blobdiff