Index: head/sys/fs/nfs/nfs_commonport.c =================================================================== --- head/sys/fs/nfs/nfs_commonport.c (revision 281724) +++ head/sys/fs/nfs/nfs_commonport.c (revision 281725) @@ -1,637 +1,637 @@ /*- * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include __FBSDID("$FreeBSD$"); /* * Functions that need to be different for different versions of BSD * kernel should be kept here, along with any global storage specific * to this BSD variant. */ #include #include #include #include #include #include #include #include #include #include extern int nfscl_ticks; extern int nfsrv_nfsuserd; extern struct nfssockreq nfsrv_nfsuserdsock; extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, struct thread *); extern int nfsrv_useacl; struct mount nfsv4root_mnt; int newnfs_numnfsd = 0; struct nfsstats newnfsstats; int nfs_numnfscbd = 0; int nfscl_debuglevel = 0; char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; struct callout newnfsd_callout; void (*nfsd_call_servertimer)(void) = NULL; void (*ncl_call_invalcaches)(struct vnode *) = NULL; static int nfs_realign_test; static int nfs_realign_count; -SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "New NFS filesystem"); +SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem"); SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 0, "Number of realign tests done"); SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 0, "Number of mbuf realignments done"); SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW, nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), "NFSv4 callback addr for server to use"); SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, - 0, "Debug level for new nfs client"); + 0, "Debug level for NFS client"); /* * Defines for malloc * (Here for FreeBSD, since they allocate storage.) */ MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); -MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode"); -MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer"); +MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "NFS vnode"); +MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer"); MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", - "New NFS directory offset data"); + "NFS directory offset data"); MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", - "New NFS local lock rollback"); + "NFS local lock rollback"); MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client"); /* * Definition of mutex locks. * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list * and assorted other nfsd structures. */ struct mtx newnfsd_mtx; struct mtx nfs_sockl_mutex; struct mtx nfs_state_mutex; struct mtx nfs_nameid_mutex; struct mtx nfs_req_mutex; struct mtx nfs_slock_mutex; /* local functions */ static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); #ifdef __NO_STRICT_ALIGNMENT /* * These architectures don't need re-alignment, so just return. */ int newnfs_realign(struct mbuf **pm, int how) { return (0); } #else /* !__NO_STRICT_ALIGNMENT */ /* * newnfs_realign: * * Check for badly aligned mbuf data and realign by copying the unaligned * portion of the data into a new mbuf chain and freeing the portions * of the old chain that were replaced. * * We cannot simply realign the data within the existing mbuf chain * because the underlying buffers may contain other rpc commands and * we cannot afford to overwrite them. * * We would prefer to avoid this situation entirely. The situation does * not occur with NFS/UDP and is supposed to only occassionally occur * with TCP. Use vfs.nfs.realign_count and realign_test to check this. * */ int newnfs_realign(struct mbuf **pm, int how) { struct mbuf *m, *n; int off, space; ++nfs_realign_test; while ((m = *pm) != NULL) { if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { /* * NB: we can't depend on m_pkthdr.len to help us * decide what to do here. May not be worth doing * the m_length calculation as m_copyback will * expand the mbuf chain below as needed. */ space = m_length(m, NULL); if (space >= MINCLSIZE) { /* NB: m_copyback handles space > MCLBYTES */ n = m_getcl(how, MT_DATA, 0); } else n = m_get(how, MT_DATA); if (n == NULL) return (ENOMEM); /* * Align the remainder of the mbuf chain. */ n->m_len = 0; off = 0; while (m != NULL) { m_copyback(n, off, m->m_len, mtod(m, caddr_t)); off += m->m_len; m = m->m_next; } m_freem(*pm); *pm = n; ++nfs_realign_count; break; } pm = &m->m_next; } return (0); } #endif /* __NO_STRICT_ALIGNMENT */ #ifdef notdef static void nfsrv_object_create(struct vnode *vp, struct thread *td) { if (vp == NULL || vp->v_type != VREG) return; (void) vfs_object_create(vp, td, td->td_ucred); } #endif /* * Look up a file name. Basically just initialize stuff and call namei(). */ int nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) { int error; NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, p); error = namei(ndp); if (!error) { NDFREE(ndp, NDF_ONLY_PNBUF); } return (error); } /* * Copy NFS uid, gids to the cred structure. */ void newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) { KASSERT(nfscr->nfsc_ngroups >= 0, ("newnfs_copycred: negative nfsc_ngroups")); cr->cr_uid = nfscr->nfsc_uid; crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); } /* * Map args from nfsmsleep() to msleep(). */ int nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, struct timespec *ts) { u_int64_t nsecval; int error, timeo; if (ts) { timeo = hz * ts->tv_sec; nsecval = (u_int64_t)ts->tv_nsec; nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 1000000000; timeo += (int)nsecval; } else { timeo = 0; } error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); return (error); } /* * Get the file system info for the server. For now, just assume FFS. */ void nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) { int pref; /* * XXX * There should be file system VFS OP(s) to get this information. * For now, assume ufs. */ if (isdgram) pref = NFS_MAXDGRAMDATA; else pref = NFS_SRVMAXIO; sip->fs_rtmax = NFS_SRVMAXIO; sip->fs_rtpref = pref; sip->fs_rtmult = NFS_FABLKSIZE; sip->fs_wtmax = NFS_SRVMAXIO; sip->fs_wtpref = pref; sip->fs_wtmult = NFS_FABLKSIZE; sip->fs_dtpref = pref; sip->fs_maxfilesize = 0xffffffffffffffffull; sip->fs_timedelta.tv_sec = 0; sip->fs_timedelta.tv_nsec = 1; sip->fs_properties = (NFSV3FSINFO_LINK | NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | NFSV3FSINFO_CANSETTIME); } /* * Do the pathconf vnode op. */ int nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, struct ucred *cred, struct thread *p) { int error; error = VOP_PATHCONF(vp, flag, retf); if (error == EOPNOTSUPP || error == EINVAL) { /* * Some file systems return EINVAL for name arguments not * supported and some return EOPNOTSUPP for this case. * So the NFSv3 Pathconf RPC doesn't fail for these cases, * just fake them. */ switch (flag) { case _PC_LINK_MAX: *retf = LINK_MAX; break; case _PC_NAME_MAX: *retf = NAME_MAX; break; case _PC_CHOWN_RESTRICTED: *retf = 1; break; case _PC_NO_TRUNC: *retf = 1; break; default: /* * Only happens if a _PC_xxx is added to the server, * but this isn't updated. */ *retf = 0; printf("nfsrvd pathconf flag=%d not supp\n", flag); }; error = 0; } NFSEXITCODE(error); return (error); } /* Fake nfsrv_atroot. Just return 0 */ int nfsrv_atroot(struct vnode *vp, long *retp) { return (0); } /* * Set the credentials to refer to root. * If only the various BSDen could agree on whether cr_gid is a separate * field or cr_groups[0]... */ void newnfs_setroot(struct ucred *cred) { cred->cr_uid = 0; cred->cr_groups[0] = 0; cred->cr_ngroups = 1; } /* * Get the client credential. Used for Renew and recovery. */ struct ucred * newnfs_getcred(void) { struct ucred *cred; struct thread *td = curthread; cred = crdup(td->td_ucred); newnfs_setroot(cred); return (cred); } /* * Nfs timer routine * Call the nfsd's timer function once/sec. */ void newnfs_timer(void *arg) { static time_t lasttime = 0; /* * Call the server timer, if set up. * The argument indicates if it is the next second and therefore * leases should be checked. */ if (lasttime != NFSD_MONOSEC) { lasttime = NFSD_MONOSEC; if (nfsd_call_servertimer != NULL) (*nfsd_call_servertimer)(); } callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); } /* * Sleep for a short period of time unless errval == NFSERR_GRACE, where * the sleep should be for 5 seconds. * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on * an event that never gets a wakeup. Only return EINTR or 0. */ int nfs_catnap(int prio, int errval, const char *wmesg) { static int non_event; int ret; if (errval == NFSERR_GRACE) ret = tsleep(&non_event, prio, wmesg, 5 * hz); else ret = tsleep(&non_event, prio, wmesg, 1); if (ret != EINTR) ret = 0; return (ret); } /* * Get referral. For now, just fail. */ struct nfsreferral * nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) { return (NULL); } static int nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) { int error; error = nfssvc_call(td, uap, td->td_ucred); NFSEXITCODE(error); return (error); } static int nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) { int error = EINVAL; struct nfsd_idargs nid; if (uap->flag & NFSSVC_IDNAME) { error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid)); if (error) goto out; error = nfssvc_idname(&nid); goto out; } else if (uap->flag & NFSSVC_GETSTATS) { error = copyout(&newnfsstats, CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); if (error == 0) { if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { newnfsstats.attrcache_hits = 0; newnfsstats.attrcache_misses = 0; newnfsstats.lookupcache_hits = 0; newnfsstats.lookupcache_misses = 0; newnfsstats.direofcache_hits = 0; newnfsstats.direofcache_misses = 0; newnfsstats.accesscache_hits = 0; newnfsstats.accesscache_misses = 0; newnfsstats.biocache_reads = 0; newnfsstats.read_bios = 0; newnfsstats.read_physios = 0; newnfsstats.biocache_writes = 0; newnfsstats.write_bios = 0; newnfsstats.write_physios = 0; newnfsstats.biocache_readlinks = 0; newnfsstats.readlink_bios = 0; newnfsstats.biocache_readdirs = 0; newnfsstats.readdir_bios = 0; newnfsstats.rpcretries = 0; newnfsstats.rpcrequests = 0; newnfsstats.rpctimeouts = 0; newnfsstats.rpcunexpected = 0; newnfsstats.rpcinvalid = 0; bzero(newnfsstats.rpccnt, sizeof(newnfsstats.rpccnt)); } if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { newnfsstats.srvrpc_errs = 0; newnfsstats.srv_errs = 0; newnfsstats.srvcache_inproghits = 0; newnfsstats.srvcache_idemdonehits = 0; newnfsstats.srvcache_nonidemdonehits = 0; newnfsstats.srvcache_misses = 0; newnfsstats.srvcache_tcppeak = 0; newnfsstats.srvclients = 0; newnfsstats.srvopenowners = 0; newnfsstats.srvopens = 0; newnfsstats.srvlockowners = 0; newnfsstats.srvlocks = 0; newnfsstats.srvdelegates = 0; newnfsstats.clopenowners = 0; newnfsstats.clopens = 0; newnfsstats.cllockowners = 0; newnfsstats.cllocks = 0; newnfsstats.cldelegates = 0; newnfsstats.cllocalopenowners = 0; newnfsstats.cllocalopens = 0; newnfsstats.cllocallockowners = 0; newnfsstats.cllocallocks = 0; bzero(newnfsstats.srvrpccnt, sizeof(newnfsstats.srvrpccnt)); bzero(newnfsstats.cbrpccnt, sizeof(newnfsstats.cbrpccnt)); } } goto out; } else if (uap->flag & NFSSVC_NFSUSERDPORT) { u_short sockport; error = copyin(uap->argp, (caddr_t)&sockport, sizeof (u_short)); if (!error) error = nfsrv_nfsuserdport(sockport, p); } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { nfsrv_nfsuserddelport(); error = 0; } out: NFSEXITCODE(error); return (error); } /* * called by all three modevent routines, so that it gets things * initialized soon enough. */ void newnfs_portinit(void) { static int inited = 0; if (inited) return; inited = 1; /* Initialize SMP locks used by both client and server. */ mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); } /* * Determine if the file system supports NFSv4 ACLs. * Return 1 if it does, 0 otherwise. */ int nfs_supportsnfsv4acls(struct vnode *vp) { int error; register_t retval; ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); if (nfsrv_useacl == 0) return (0); error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); if (error == 0 && retval != 0) return (1); return (0); } extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); /* * Called once to initialize data structures... */ static int nfscommon_modevent(module_t mod, int type, void *data) { int error = 0; static int loaded = 0; switch (type) { case MOD_LOAD: if (loaded) goto out; newnfs_portinit(); mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, MTX_DEF); callout_init(&newnfsd_callout, CALLOUT_MPSAFE); newnfs_init(); nfsd_call_nfscommon = nfssvc_nfscommon; loaded = 1; break; case MOD_UNLOAD: if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || nfs_numnfscbd != 0) { error = EBUSY; break; } nfsd_call_nfscommon = NULL; callout_drain(&newnfsd_callout); /* and get rid of the mutexes */ mtx_destroy(&nfs_nameid_mutex); mtx_destroy(&newnfsd_mtx); mtx_destroy(&nfs_state_mutex); mtx_destroy(&nfs_sockl_mutex); mtx_destroy(&nfs_slock_mutex); mtx_destroy(&nfs_req_mutex); mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); loaded = 0; break; default: error = EOPNOTSUPP; break; } out: NFSEXITCODE(error); return error; } static moduledata_t nfscommon_mod = { "nfscommon", nfscommon_modevent, NULL, }; DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); /* So that loader and kldload(2) can find us, wherever we are.. */ MODULE_VERSION(nfscommon, 1); MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); Index: head/sys/fs/nfsclient/nfs_clvfsops.c =================================================================== --- head/sys/fs/nfsclient/nfs_clvfsops.c (revision 281724) +++ head/sys/fs/nfsclient/nfs_clvfsops.c (revision 281725) @@ -1,1877 +1,1877 @@ /*- * Copyright (c) 1989, 1993, 1995 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from nfs_vfsops.c 8.12 (Berkeley) 5/20/95 */ #include __FBSDID("$FreeBSD$"); #include "opt_bootp.h" #include "opt_nfsroot.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include FEATURE(nfscl, "NFSv4 client"); extern int nfscl_ticks; extern struct timeval nfsboottime; extern struct nfsstats newnfsstats; extern int nfsrv_useacl; extern int nfscl_debuglevel; extern enum nfsiod_state ncl_iodwant[NFS_MAXASYNCDAEMON]; extern struct nfsmount *ncl_iodmount[NFS_MAXASYNCDAEMON]; extern struct mtx ncl_iod_mutex; NFSCLSTATEMUTEX; -MALLOC_DEFINE(M_NEWNFSREQ, "newnfsclient_req", "New NFS request header"); -MALLOC_DEFINE(M_NEWNFSMNT, "newnfsmnt", "New NFS mount struct"); +MALLOC_DEFINE(M_NEWNFSREQ, "newnfsclient_req", "NFS request header"); +MALLOC_DEFINE(M_NEWNFSMNT, "newnfsmnt", "NFS mount struct"); SYSCTL_DECL(_vfs_nfs); static int nfs_ip_paranoia = 1; SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW, &nfs_ip_paranoia, 0, ""); static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY; SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_INITIAL_DELAY, downdelayinitial, 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_nfs, NFS_TPRINTF_DELAY, downdelayinterval, CTLFLAG_RW, &nfs_tprintf_delay, 0, ""); #ifdef NFS_DEBUG int nfs_debug; SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "Toggle debug flag"); #endif static int nfs_mountroot(struct mount *); static void nfs_sec_name(char *, int *); static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp, const char *, struct ucred *, struct thread *); static int mountnfs(struct nfs_args *, struct mount *, struct sockaddr *, char *, u_char *, int, u_char *, int, u_char *, int, struct vnode **, struct ucred *, struct thread *, int, int, int); static void nfs_getnlminfo(struct vnode *, uint8_t *, size_t *, struct sockaddr_storage *, int *, off_t *, struct timeval *); static vfs_mount_t nfs_mount; static vfs_cmount_t nfs_cmount; static vfs_unmount_t nfs_unmount; static vfs_root_t nfs_root; static vfs_statfs_t nfs_statfs; static vfs_sync_t nfs_sync; static vfs_sysctl_t nfs_sysctl; static vfs_purge_t nfs_purge; /* * nfs vfs operations. */ static struct vfsops nfs_vfsops = { .vfs_init = ncl_init, .vfs_mount = nfs_mount, .vfs_cmount = nfs_cmount, .vfs_root = nfs_root, .vfs_statfs = nfs_statfs, .vfs_sync = nfs_sync, .vfs_uninit = ncl_uninit, .vfs_unmount = nfs_unmount, .vfs_sysctl = nfs_sysctl, .vfs_purge = nfs_purge, }; VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK | VFCF_SBDRY); /* So that loader and kldload(2) can find us, wherever we are.. */ MODULE_VERSION(nfs, 1); MODULE_DEPEND(nfs, nfscommon, 1, 1, 1); MODULE_DEPEND(nfs, krpc, 1, 1, 1); MODULE_DEPEND(nfs, nfssvc, 1, 1, 1); MODULE_DEPEND(nfs, nfslock, 1, 1, 1); /* * This structure is now defined in sys/nfs/nfs_diskless.c so that it * can be shared by both NFS clients. It is declared here so that it * will be defined for kernels built without NFS_ROOT, although it * isn't used in that case. */ #if !defined(NFS_ROOT) struct nfs_diskless nfs_diskless = { { { 0 } } }; struct nfsv3_diskless nfsv3_diskless = { { { 0 } } }; int nfs_diskless_valid = 0; #endif SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD, &nfs_diskless_valid, 0, "Has the diskless struct been filled correctly"); SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD, nfsv3_diskless.root_hostnam, 0, "Path to nfs root"); SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD, &nfsv3_diskless.root_saddr, sizeof(nfsv3_diskless.root_saddr), "%Ssockaddr_in", "Diskless root nfs address"); void newnfsargs_ntoh(struct nfs_args *); static int nfs_mountdiskless(char *, struct sockaddr_in *, struct nfs_args *, struct thread *, struct vnode **, struct mount *); static void nfs_convert_diskless(void); static void nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs); int newnfs_iosize(struct nfsmount *nmp) { int iosize, maxio; /* First, set the upper limit for iosize */ if (nmp->nm_flag & NFSMNT_NFSV4) { maxio = NFS_MAXBSIZE; } else if (nmp->nm_flag & NFSMNT_NFSV3) { if (nmp->nm_sotype == SOCK_DGRAM) maxio = NFS_MAXDGRAMDATA; else maxio = NFS_MAXBSIZE; } else { maxio = NFS_V2MAXDATA; } if (nmp->nm_rsize > maxio || nmp->nm_rsize == 0) nmp->nm_rsize = maxio; if (nmp->nm_rsize > MAXBSIZE) nmp->nm_rsize = MAXBSIZE; if (nmp->nm_readdirsize > maxio || nmp->nm_readdirsize == 0) nmp->nm_readdirsize = maxio; if (nmp->nm_readdirsize > nmp->nm_rsize) nmp->nm_readdirsize = nmp->nm_rsize; if (nmp->nm_wsize > maxio || nmp->nm_wsize == 0) nmp->nm_wsize = maxio; if (nmp->nm_wsize > MAXBSIZE) nmp->nm_wsize = MAXBSIZE; /* * 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. */ iosize = imax(nmp->nm_rsize, nmp->nm_wsize); iosize = imax(iosize, PAGE_SIZE); nmp->nm_mountp->mnt_stat.f_iosize = iosize; return (iosize); } static void nfs_convert_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->readahead = oargs->readahead; args->hostname = oargs->hostname; } static void nfs_convert_diskless(void) { bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif, sizeof(struct ifaliasreq)); bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway, sizeof(struct sockaddr_in)); nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args); if (nfsv3_diskless.root_args.flags & NFSMNT_NFSV3) { nfsv3_diskless.root_fhsize = NFSX_MYFH; bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_MYFH); } else { nfsv3_diskless.root_fhsize = NFSX_V2FH; bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH); } bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr, sizeof(struct sockaddr_in)); bcopy(nfs_diskless.root_hostnam, nfsv3_diskless.root_hostnam, MNAMELEN); nfsv3_diskless.root_time = nfs_diskless.root_time; bcopy(nfs_diskless.my_hostnam, nfsv3_diskless.my_hostnam, MAXHOSTNAMELEN); nfs_diskless_valid = 3; } /* * nfs statfs call */ static int nfs_statfs(struct mount *mp, struct statfs *sbp) { struct vnode *vp; struct thread *td; struct nfsmount *nmp = VFSTONFS(mp); struct nfsvattr nfsva; struct nfsfsinfo fs; struct nfsstatfs sb; int error = 0, attrflag, gotfsinfo = 0, ret; struct nfsnode *np; td = curthread; error = vfs_busy(mp, MBF_NOWAIT); if (error) return (error); error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE); if (error) { vfs_unbusy(mp); return (error); } vp = NFSTOV(np); mtx_lock(&nmp->nm_mtx); if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) { mtx_unlock(&nmp->nm_mtx); error = nfsrpc_fsinfo(vp, &fs, td->td_ucred, td, &nfsva, &attrflag, NULL); if (!error) gotfsinfo = 1; } else mtx_unlock(&nmp->nm_mtx); if (!error) error = nfsrpc_statfs(vp, &sb, &fs, td->td_ucred, td, &nfsva, &attrflag, NULL); if (error != 0) NFSCL_DEBUG(2, "statfs=%d\n", error); if (attrflag == 0) { ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1, td->td_ucred, td, &nfsva, NULL, NULL); if (ret) { /* * Just set default values to get things going. */ NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr)); nfsva.na_vattr.va_type = VDIR; nfsva.na_vattr.va_mode = 0777; nfsva.na_vattr.va_nlink = 100; nfsva.na_vattr.va_uid = (uid_t)0; nfsva.na_vattr.va_gid = (gid_t)0; nfsva.na_vattr.va_fileid = 2; nfsva.na_vattr.va_gen = 1; nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE; nfsva.na_vattr.va_size = 512 * 1024; } } (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1); if (!error) { mtx_lock(&nmp->nm_mtx); if (gotfsinfo || (nmp->nm_flag & NFSMNT_NFSV4)) nfscl_loadfsinfo(nmp, &fs); nfscl_loadsbinfo(nmp, &sb, sbp); sbp->f_iosize = newnfs_iosize(nmp); mtx_unlock(&nmp->nm_mtx); 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); } strncpy(&sbp->f_fstypename[0], mp->mnt_vfc->vfc_name, MFSNAMELEN); } else if (NFS_ISV4(vp)) { error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0); } vput(vp); vfs_unbusy(mp); return (error); } /* * nfs version 3 fsinfo rpc call */ int ncl_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred, struct thread *td) { struct nfsfsinfo fs; struct nfsvattr nfsva; int error, attrflag; error = nfsrpc_fsinfo(vp, &fs, cred, td, &nfsva, &attrflag, NULL); if (!error) { if (attrflag) (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1); mtx_lock(&nmp->nm_mtx); nfscl_loadfsinfo(nmp, &fs); mtx_unlock(&nmp->nm_mtx); } return (error); } /* * Mount a remote root fs via. nfs. This depends on the info in the * nfs_diskless structure that has been filled in properly by some primary * bootstrap. * It goes something like this: * - do enough of "ifconfig" by calling ifioctl() so that the system * can talk to the server * - If nfs_diskless.mygateway is filled in, use that address as * a default gateway. * - build the rootfs mount point and call mountnfs() to do the rest. * * It is assumed to be safe to read, modify, and write the nfsv3_diskless * structure, as well as other global NFS client variables here, as * nfs_mountroot() will be called once in the boot before any other NFS * client activity occurs. */ static int nfs_mountroot(struct mount *mp) { struct thread *td = curthread; struct nfsv3_diskless *nd = &nfsv3_diskless; struct socket *so; struct vnode *vp; struct ifreq ir; int error; u_long l; char buf[128]; char *cp; #if defined(BOOTP_NFSROOT) && defined(BOOTP) bootpc_init(); /* use bootp to get nfs_diskless filled in */ #elif defined(NFS_ROOT) nfs_setup_diskless(); #endif if (nfs_diskless_valid == 0) return (-1); if (nfs_diskless_valid == 1) nfs_convert_diskless(); /* * XXX splnet, so networks will receive... */ splnet(); /* * Do enough of ifconfig(8) so that the critical net interface can * talk to the server. */ error = socreate(nd->myif.ifra_addr.sa_family, &so, nd->root_args.sotype, 0, td->td_ucred, td); if (error) panic("nfs_mountroot: socreate(%04x): %d", nd->myif.ifra_addr.sa_family, error); #if 0 /* XXX Bad idea */ /* * We might not have been told the right interface, so we pass * over the first ten interfaces of the same kind, until we get * one of them configured. */ for (i = strlen(nd->myif.ifra_name) - 1; nd->myif.ifra_name[i] >= '0' && nd->myif.ifra_name[i] <= '9'; nd->myif.ifra_name[i] ++) { error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td); if(!error) break; } #endif error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td); if (error) panic("nfs_mountroot: SIOCAIFADDR: %d", error); if ((cp = kern_getenv("boot.netif.mtu")) != NULL) { ir.ifr_mtu = strtol(cp, NULL, 10); bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ); freeenv(cp); error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td); if (error) printf("nfs_mountroot: SIOCSIFMTU: %d", error); } soclose(so); /* * If the gateway field is filled in, set it as the default route. * Note that pxeboot will set a default route of 0 if the route * is not set by the DHCP server. Check also for a value of 0 * to avoid panicking inappropriately in that situation. */ if (nd->mygateway.sin_len != 0 && nd->mygateway.sin_addr.s_addr != 0) { struct sockaddr_in mask, sin; bzero((caddr_t)&mask, sizeof(mask)); sin = mask; sin.sin_family = AF_INET; sin.sin_len = sizeof(sin); /* XXX MRT use table 0 for this sort of thing */ CURVNET_SET(TD_TO_VNET(td)); error = rtrequest_fib(RTM_ADD, (struct sockaddr *)&sin, (struct sockaddr *)&nd->mygateway, (struct sockaddr *)&mask, RTF_UP | RTF_GATEWAY, NULL, RT_DEFAULT_FIB); CURVNET_RESTORE(); if (error) panic("nfs_mountroot: RTM_ADD: %d", error); } /* * Create the rootfs mount point. */ nd->root_args.fh = nd->root_fh; nd->root_args.fhsize = nd->root_fhsize; l = ntohl(nd->root_saddr.sin_addr.s_addr); snprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s", (l >> 24) & 0xff, (l >> 16) & 0xff, (l >> 8) & 0xff, (l >> 0) & 0xff, nd->root_hostnam); printf("NFS ROOT: %s\n", buf); nd->root_args.hostname = buf; if ((error = nfs_mountdiskless(buf, &nd->root_saddr, &nd->root_args, td, &vp, mp)) != 0) { return (error); } /* * This is not really an nfs issue, but it is much easier to * set hostname here and then let the "/etc/rc.xxx" files * mount the right /var based upon its preset value. */ mtx_lock(&prison0.pr_mtx); strlcpy(prison0.pr_hostname, nd->my_hostnam, sizeof(prison0.pr_hostname)); mtx_unlock(&prison0.pr_mtx); inittodr(ntohl(nd->root_time)); return (0); } /* * Internal version of mount system call for diskless setup. */ static int nfs_mountdiskless(char *path, struct sockaddr_in *sin, struct nfs_args *args, struct thread *td, struct vnode **vpp, struct mount *mp) { struct sockaddr *nam; int dirlen, error; char *dirpath; /* * Find the directory path in "path", which also has the server's * name/ip address in it. */ dirpath = strchr(path, ':'); if (dirpath != NULL) dirlen = strlen(++dirpath); else dirlen = 0; nam = sodupsockaddr((struct sockaddr *)sin, M_WAITOK); if ((error = mountnfs(args, mp, nam, path, NULL, 0, dirpath, dirlen, NULL, 0, vpp, td->td_ucred, td, NFS_DEFAULT_NAMETIMEO, NFS_DEFAULT_NEGNAMETIMEO, 0)) != 0) { printf("nfs_mountroot: mount %s on /: %d\n", path, error); return (error); } return (0); } static void nfs_sec_name(char *sec, int *flagsp) { if (!strcmp(sec, "krb5")) *flagsp |= NFSMNT_KERB; else if (!strcmp(sec, "krb5i")) *flagsp |= (NFSMNT_KERB | NFSMNT_INTEGRITY); else if (!strcmp(sec, "krb5p")) *flagsp |= (NFSMNT_KERB | NFSMNT_PRIVACY); } static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp, const char *hostname, struct ucred *cred, struct thread *td) { int s; int adjsock; char *p; s = splnet(); /* * Set read-only flag if requested; otherwise, clear it if this is * an update. If this is not an update, then either the read-only * flag is already clear, or this is a root mount and it was set * intentionally at some previous point. */ if (vfs_getopt(mp->mnt_optnew, "ro", NULL, NULL) == 0) { MNT_ILOCK(mp); mp->mnt_flag |= MNT_RDONLY; MNT_IUNLOCK(mp); } else if (mp->mnt_flag & MNT_UPDATE) { MNT_ILOCK(mp); mp->mnt_flag &= ~MNT_RDONLY; MNT_IUNLOCK(mp); } /* * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes * no sense in that context. Also, set up appropriate retransmit * and soft timeout behavior. */ if (argp->sotype == SOCK_STREAM) { nmp->nm_flag &= ~NFSMNT_NOCONN; nmp->nm_timeo = NFS_MAXTIMEO; if ((argp->flags & NFSMNT_NFSV4) != 0) nmp->nm_retry = INT_MAX; else nmp->nm_retry = NFS_RETRANS_TCP; } /* Also clear RDIRPLUS if NFSv2, it crashes some servers */ if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) { argp->flags &= ~NFSMNT_RDIRPLUS; nmp->nm_flag &= ~NFSMNT_RDIRPLUS; } /* Re-bind if rsrvd port requested and wasn't on one */ adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT) && (argp->flags & NFSMNT_RESVPORT); /* Also re-bind if we're switching to/from a connected UDP socket */ adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) != (argp->flags & NFSMNT_NOCONN)); /* Update flags atomically. Don't change the lock bits. */ nmp->nm_flag = argp->flags | nmp->nm_flag; splx(s); 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_WSIZE) && argp->wsize > 0) { nmp->nm_wsize = argp->wsize; /* * Clip at the power of 2 below the size. There is an * issue (not isolated) that causes intermittent page * faults if this is not done. */ if (nmp->nm_wsize > NFS_FABLKSIZE) nmp->nm_wsize = 1 << (fls(nmp->nm_wsize) - 1); else nmp->nm_wsize = NFS_FABLKSIZE; } if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) { nmp->nm_rsize = argp->rsize; /* * Clip at the power of 2 below the size. There is an * issue (not isolated) that causes intermittent page * faults if this is not done. */ if (nmp->nm_rsize > NFS_FABLKSIZE) nmp->nm_rsize = 1 << (fls(nmp->nm_rsize) - 1); else nmp->nm_rsize = NFS_FABLKSIZE; } if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) { nmp->nm_readdirsize = argp->readdirsize; } if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0) nmp->nm_acregmin = argp->acregmin; else nmp->nm_acregmin = NFS_MINATTRTIMO; if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0) nmp->nm_acregmax = argp->acregmax; else nmp->nm_acregmax = NFS_MAXATTRTIMO; if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0) nmp->nm_acdirmin = argp->acdirmin; else nmp->nm_acdirmin = NFS_MINDIRATTRTIMO; if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0) nmp->nm_acdirmax = argp->acdirmax; else nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO; if (nmp->nm_acdirmin > nmp->nm_acdirmax) nmp->nm_acdirmin = nmp->nm_acdirmax; if (nmp->nm_acregmin > nmp->nm_acregmax) nmp->nm_acregmin = nmp->nm_acregmax; if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) { if (argp->readahead <= NFS_MAXRAHEAD) nmp->nm_readahead = argp->readahead; else nmp->nm_readahead = NFS_MAXRAHEAD; } if ((argp->flags & NFSMNT_WCOMMITSIZE) && argp->wcommitsize >= 0) { if (argp->wcommitsize < nmp->nm_wsize) nmp->nm_wcommitsize = nmp->nm_wsize; else nmp->nm_wcommitsize = argp->wcommitsize; } adjsock |= ((nmp->nm_sotype != argp->sotype) || (nmp->nm_soproto != argp->proto)); if (nmp->nm_client != NULL && adjsock) { int haslock = 0, error = 0; if (nmp->nm_sotype == SOCK_STREAM) { error = newnfs_sndlock(&nmp->nm_sockreq.nr_lock); if (!error) haslock = 1; } if (!error) { newnfs_disconnect(&nmp->nm_sockreq); if (haslock) newnfs_sndunlock(&nmp->nm_sockreq.nr_lock); nmp->nm_sotype = argp->sotype; nmp->nm_soproto = argp->proto; if (nmp->nm_sotype == SOCK_DGRAM) while (newnfs_connect(nmp, &nmp->nm_sockreq, cred, td, 0)) { printf("newnfs_args: retrying connect\n"); (void) nfs_catnap(PSOCK, 0, "nfscon"); } } } else { nmp->nm_sotype = argp->sotype; nmp->nm_soproto = argp->proto; } if (hostname != NULL) { strlcpy(nmp->nm_hostname, hostname, sizeof(nmp->nm_hostname)); p = strchr(nmp->nm_hostname, ':'); if (p != NULL) *p = '\0'; } } static const char *nfs_opts[] = { "from", "nfs_args", "noac", "noatime", "noexec", "suiddir", "nosuid", "nosymfollow", "union", "noclusterr", "noclusterw", "multilabel", "acls", "force", "update", "async", "noconn", "nolockd", "conn", "lockd", "intr", "rdirplus", "readdirsize", "soft", "hard", "mntudp", "tcp", "udp", "wsize", "rsize", "retrans", "actimeo", "acregmin", "acregmax", "acdirmin", "acdirmax", "resvport", "readahead", "hostname", "timeo", "timeout", "addr", "fh", "nfsv3", "sec", "principal", "nfsv4", "gssname", "allgssname", "dirpath", "minorversion", "nametimeo", "negnametimeo", "nocto", "noncontigwr", "pnfs", "wcommitsize", NULL }; /* * 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. */ /* ARGSUSED */ static int nfs_mount(struct mount *mp) { struct nfs_args args = { .version = NFS_ARGSVERSION, .addr = NULL, .addrlen = sizeof (struct sockaddr_in), .sotype = SOCK_STREAM, .proto = 0, .fh = NULL, .fhsize = 0, .flags = NFSMNT_RESVPORT, .wsize = NFS_WSIZE, .rsize = NFS_RSIZE, .readdirsize = NFS_READDIRSIZE, .timeo = 10, .retrans = NFS_RETRANS, .readahead = NFS_DEFRAHEAD, .wcommitsize = 0, /* was: NQ_DEFLEASE */ .hostname = NULL, .acregmin = NFS_MINATTRTIMO, .acregmax = NFS_MAXATTRTIMO, .acdirmin = NFS_MINDIRATTRTIMO, .acdirmax = NFS_MAXDIRATTRTIMO, }; int error = 0, ret, len; struct sockaddr *nam = NULL; struct vnode *vp; struct thread *td; char hst[MNAMELEN]; u_char nfh[NFSX_FHMAX], krbname[100], dirpath[100], srvkrbname[100]; char *opt, *name, *secname; int nametimeo = NFS_DEFAULT_NAMETIMEO; int negnametimeo = NFS_DEFAULT_NEGNAMETIMEO; int minvers = 0; int dirlen, has_nfs_args_opt, krbnamelen, srvkrbnamelen; size_t hstlen; has_nfs_args_opt = 0; if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) { error = EINVAL; goto out; } td = curthread; if ((mp->mnt_flag & (MNT_ROOTFS | MNT_UPDATE)) == MNT_ROOTFS) { error = nfs_mountroot(mp); goto out; } nfscl_init(); /* * The old mount_nfs program passed the struct nfs_args * from userspace to kernel. The new mount_nfs program * passes string options via nmount() from userspace to kernel * and we populate the struct nfs_args in the kernel. */ if (vfs_getopt(mp->mnt_optnew, "nfs_args", NULL, NULL) == 0) { error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args, sizeof(args)); if (error != 0) goto out; if (args.version != NFS_ARGSVERSION) { error = EPROGMISMATCH; goto out; } has_nfs_args_opt = 1; } /* Handle the new style options. */ if (vfs_getopt(mp->mnt_optnew, "noac", NULL, NULL) == 0) { args.acdirmin = args.acdirmax = args.acregmin = args.acregmax = 0; args.flags |= NFSMNT_ACDIRMIN | NFSMNT_ACDIRMAX | NFSMNT_ACREGMIN | NFSMNT_ACREGMAX; } if (vfs_getopt(mp->mnt_optnew, "noconn", NULL, NULL) == 0) args.flags |= NFSMNT_NOCONN; if (vfs_getopt(mp->mnt_optnew, "conn", NULL, NULL) == 0) args.flags &= ~NFSMNT_NOCONN; if (vfs_getopt(mp->mnt_optnew, "nolockd", NULL, NULL) == 0) args.flags |= NFSMNT_NOLOCKD; if (vfs_getopt(mp->mnt_optnew, "lockd", NULL, NULL) == 0) args.flags &= ~NFSMNT_NOLOCKD; if (vfs_getopt(mp->mnt_optnew, "intr", NULL, NULL) == 0) args.flags |= NFSMNT_INT; if (vfs_getopt(mp->mnt_optnew, "rdirplus", NULL, NULL) == 0) args.flags |= NFSMNT_RDIRPLUS; if (vfs_getopt(mp->mnt_optnew, "resvport", NULL, NULL) == 0) args.flags |= NFSMNT_RESVPORT; if (vfs_getopt(mp->mnt_optnew, "noresvport", NULL, NULL) == 0) args.flags &= ~NFSMNT_RESVPORT; if (vfs_getopt(mp->mnt_optnew, "soft", NULL, NULL) == 0) args.flags |= NFSMNT_SOFT; if (vfs_getopt(mp->mnt_optnew, "hard", NULL, NULL) == 0) args.flags &= ~NFSMNT_SOFT; if (vfs_getopt(mp->mnt_optnew, "mntudp", NULL, NULL) == 0) args.sotype = SOCK_DGRAM; if (vfs_getopt(mp->mnt_optnew, "udp", NULL, NULL) == 0) args.sotype = SOCK_DGRAM; if (vfs_getopt(mp->mnt_optnew, "tcp", NULL, NULL) == 0) args.sotype = SOCK_STREAM; if (vfs_getopt(mp->mnt_optnew, "nfsv3", NULL, NULL) == 0) args.flags |= NFSMNT_NFSV3; if (vfs_getopt(mp->mnt_optnew, "nfsv4", NULL, NULL) == 0) { args.flags |= NFSMNT_NFSV4; args.sotype = SOCK_STREAM; } if (vfs_getopt(mp->mnt_optnew, "allgssname", NULL, NULL) == 0) args.flags |= NFSMNT_ALLGSSNAME; if (vfs_getopt(mp->mnt_optnew, "nocto", NULL, NULL) == 0) args.flags |= NFSMNT_NOCTO; if (vfs_getopt(mp->mnt_optnew, "noncontigwr", NULL, NULL) == 0) args.flags |= NFSMNT_NONCONTIGWR; if (vfs_getopt(mp->mnt_optnew, "pnfs", NULL, NULL) == 0) args.flags |= NFSMNT_PNFS; if (vfs_getopt(mp->mnt_optnew, "readdirsize", (void **)&opt, NULL) == 0) { if (opt == NULL) { vfs_mount_error(mp, "illegal readdirsize"); error = EINVAL; goto out; } ret = sscanf(opt, "%d", &args.readdirsize); if (ret != 1 || args.readdirsize <= 0) { vfs_mount_error(mp, "illegal readdirsize: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_READDIRSIZE; } if (vfs_getopt(mp->mnt_optnew, "readahead", (void **)&opt, NULL) == 0) { if (opt == NULL) { vfs_mount_error(mp, "illegal readahead"); error = EINVAL; goto out; } ret = sscanf(opt, "%d", &args.readahead); if (ret != 1 || args.readahead <= 0) { vfs_mount_error(mp, "illegal readahead: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_READAHEAD; } if (vfs_getopt(mp->mnt_optnew, "wsize", (void **)&opt, NULL) == 0) { if (opt == NULL) { vfs_mount_error(mp, "illegal wsize"); error = EINVAL; goto out; } ret = sscanf(opt, "%d", &args.wsize); if (ret != 1 || args.wsize <= 0) { vfs_mount_error(mp, "illegal wsize: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_WSIZE; } if (vfs_getopt(mp->mnt_optnew, "rsize", (void **)&opt, NULL) == 0) { if (opt == NULL) { vfs_mount_error(mp, "illegal rsize"); error = EINVAL; goto out; } ret = sscanf(opt, "%d", &args.rsize); if (ret != 1 || args.rsize <= 0) { vfs_mount_error(mp, "illegal wsize: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_RSIZE; } if (vfs_getopt(mp->mnt_optnew, "retrans", (void **)&opt, NULL) == 0) { if (opt == NULL) { vfs_mount_error(mp, "illegal retrans"); error = EINVAL; goto out; } ret = sscanf(opt, "%d", &args.retrans); if (ret != 1 || args.retrans <= 0) { vfs_mount_error(mp, "illegal retrans: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_RETRANS; } if (vfs_getopt(mp->mnt_optnew, "actimeo", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.acregmin); if (ret != 1 || args.acregmin < 0) { vfs_mount_error(mp, "illegal actimeo: %s", opt); error = EINVAL; goto out; } args.acdirmin = args.acdirmax = args.acregmax = args.acregmin; args.flags |= NFSMNT_ACDIRMIN | NFSMNT_ACDIRMAX | NFSMNT_ACREGMIN | NFSMNT_ACREGMAX; } if (vfs_getopt(mp->mnt_optnew, "acregmin", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.acregmin); if (ret != 1 || args.acregmin < 0) { vfs_mount_error(mp, "illegal acregmin: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_ACREGMIN; } if (vfs_getopt(mp->mnt_optnew, "acregmax", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.acregmax); if (ret != 1 || args.acregmax < 0) { vfs_mount_error(mp, "illegal acregmax: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_ACREGMAX; } if (vfs_getopt(mp->mnt_optnew, "acdirmin", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.acdirmin); if (ret != 1 || args.acdirmin < 0) { vfs_mount_error(mp, "illegal acdirmin: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_ACDIRMIN; } if (vfs_getopt(mp->mnt_optnew, "acdirmax", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.acdirmax); if (ret != 1 || args.acdirmax < 0) { vfs_mount_error(mp, "illegal acdirmax: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_ACDIRMAX; } if (vfs_getopt(mp->mnt_optnew, "wcommitsize", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.wcommitsize); if (ret != 1 || args.wcommitsize < 0) { vfs_mount_error(mp, "illegal wcommitsize: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_WCOMMITSIZE; } if (vfs_getopt(mp->mnt_optnew, "timeo", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.timeo); if (ret != 1 || args.timeo <= 0) { vfs_mount_error(mp, "illegal timeo: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_TIMEO; } if (vfs_getopt(mp->mnt_optnew, "timeout", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &args.timeo); if (ret != 1 || args.timeo <= 0) { vfs_mount_error(mp, "illegal timeout: %s", opt); error = EINVAL; goto out; } args.flags |= NFSMNT_TIMEO; } if (vfs_getopt(mp->mnt_optnew, "nametimeo", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &nametimeo); if (ret != 1 || nametimeo < 0) { vfs_mount_error(mp, "illegal nametimeo: %s", opt); error = EINVAL; goto out; } } if (vfs_getopt(mp->mnt_optnew, "negnametimeo", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &negnametimeo); if (ret != 1 || negnametimeo < 0) { vfs_mount_error(mp, "illegal negnametimeo: %s", opt); error = EINVAL; goto out; } } if (vfs_getopt(mp->mnt_optnew, "minorversion", (void **)&opt, NULL) == 0) { ret = sscanf(opt, "%d", &minvers); if (ret != 1 || minvers < 0 || minvers > 1 || (args.flags & NFSMNT_NFSV4) == 0) { vfs_mount_error(mp, "illegal minorversion: %s", opt); error = EINVAL; goto out; } } if (vfs_getopt(mp->mnt_optnew, "sec", (void **) &secname, NULL) == 0) nfs_sec_name(secname, &args.flags); if (mp->mnt_flag & MNT_UPDATE) { struct nfsmount *nmp = VFSTONFS(mp); if (nmp == NULL) { error = EIO; goto out; } /* * If a change from TCP->UDP is done and there are thread(s) * that have I/O RPC(s) in progress with a tranfer size * greater than NFS_MAXDGRAMDATA, those thread(s) will be * hung, retrying the RPC(s) forever. Usually these threads * will be seen doing an uninterruptible sleep on wait channel * "nfsreq". */ if (args.sotype == SOCK_DGRAM && nmp->nm_sotype == SOCK_STREAM) tprintf(td->td_proc, LOG_WARNING, "Warning: mount -u that changes TCP->UDP can result in hung threads\n"); /* * When doing an update, we can't change version, * security, switch lockd strategies or change cookie * translation */ args.flags = (args.flags & ~(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_KERB | NFSMNT_INTEGRITY | NFSMNT_PRIVACY | NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) | (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_KERB | NFSMNT_INTEGRITY | NFSMNT_PRIVACY | NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)); nfs_decode_args(mp, nmp, &args, NULL, td->td_ucred, td); goto out; } /* * Make the nfs_ip_paranoia sysctl serve as the default connection * or no-connection mode for those protocols that support * no-connection mode (the flag will be cleared later for protocols * that do not support no-connection mode). This will allow a client * to receive replies from a different IP then the request was * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid), * not 0. */ if (nfs_ip_paranoia == 0) args.flags |= NFSMNT_NOCONN; if (has_nfs_args_opt != 0) { /* * In the 'nfs_args' case, the pointers in the args * structure are in userland - we copy them in here. */ if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX) { vfs_mount_error(mp, "Bad file handle"); error = EINVAL; goto out; } error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize); if (error != 0) goto out; error = copyinstr(args.hostname, hst, MNAMELEN - 1, &hstlen); if (error != 0) goto out; bzero(&hst[hstlen], MNAMELEN - hstlen); args.hostname = hst; /* sockargs() call must be after above copyin() calls */ error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen); if (error != 0) goto out; } else { if (vfs_getopt(mp->mnt_optnew, "fh", (void **)&args.fh, &args.fhsize) == 0) { if (args.fhsize < 0 || args.fhsize > NFSX_FHMAX) { vfs_mount_error(mp, "Bad file handle"); error = EINVAL; goto out; } bcopy(args.fh, nfh, args.fhsize); } else { args.fhsize = 0; } (void) vfs_getopt(mp->mnt_optnew, "hostname", (void **)&args.hostname, &len); if (args.hostname == NULL) { vfs_mount_error(mp, "Invalid hostname"); error = EINVAL; goto out; } bcopy(args.hostname, hst, MNAMELEN); hst[MNAMELEN - 1] = '\0'; } if (vfs_getopt(mp->mnt_optnew, "principal", (void **)&name, NULL) == 0) strlcpy(srvkrbname, name, sizeof (srvkrbname)); else snprintf(srvkrbname, sizeof (srvkrbname), "nfs@%s", hst); srvkrbnamelen = strlen(srvkrbname); if (vfs_getopt(mp->mnt_optnew, "gssname", (void **)&name, NULL) == 0) strlcpy(krbname, name, sizeof (krbname)); else krbname[0] = '\0'; krbnamelen = strlen(krbname); if (vfs_getopt(mp->mnt_optnew, "dirpath", (void **)&name, NULL) == 0) strlcpy(dirpath, name, sizeof (dirpath)); else dirpath[0] = '\0'; dirlen = strlen(dirpath); if (has_nfs_args_opt == 0) { if (vfs_getopt(mp->mnt_optnew, "addr", (void **)&args.addr, &args.addrlen) == 0) { if (args.addrlen > SOCK_MAXADDRLEN) { error = ENAMETOOLONG; goto out; } nam = malloc(args.addrlen, M_SONAME, M_WAITOK); bcopy(args.addr, nam, args.addrlen); nam->sa_len = args.addrlen; } else { vfs_mount_error(mp, "No server address"); error = EINVAL; goto out; } } args.fh = nfh; error = mountnfs(&args, mp, nam, hst, krbname, krbnamelen, dirpath, dirlen, srvkrbname, srvkrbnamelen, &vp, td->td_ucred, td, nametimeo, negnametimeo, minvers); out: if (!error) { MNT_ILOCK(mp); mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_NO_IOPF | MNTK_USES_BCACHE; MNT_IUNLOCK(mp); } return (error); } /* * 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. */ /* ARGSUSED */ static int nfs_cmount(struct mntarg *ma, void *data, uint64_t flags) { int error; struct nfs_args args; error = copyin(data, &args, sizeof (struct nfs_args)); if (error) return error; ma = mount_arg(ma, "nfs_args", &args, sizeof args); error = kernel_mount(ma, flags); return (error); } /* * Common code for mount and mountroot */ static int mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam, char *hst, u_char *krbname, int krbnamelen, u_char *dirpath, int dirlen, u_char *srvkrbname, int srvkrbnamelen, struct vnode **vpp, struct ucred *cred, struct thread *td, int nametimeo, int negnametimeo, int minvers) { struct nfsmount *nmp; struct nfsnode *np; int error, trycnt, ret; struct nfsvattr nfsva; struct nfsclclient *clp; struct nfsclds *dsp, *tdsp; uint32_t lease; static u_int64_t clval = 0; NFSCL_DEBUG(3, "in mnt\n"); clp = NULL; if (mp->mnt_flag & MNT_UPDATE) { nmp = VFSTONFS(mp); printf("%s: MNT_UPDATE is no longer handled here\n", __func__); FREE(nam, M_SONAME); return (0); } else { MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount) + krbnamelen + dirlen + srvkrbnamelen + 2, M_NEWNFSMNT, M_WAITOK | M_ZERO); TAILQ_INIT(&nmp->nm_bufq); if (clval == 0) clval = (u_int64_t)nfsboottime.tv_sec; nmp->nm_clval = clval++; nmp->nm_krbnamelen = krbnamelen; nmp->nm_dirpathlen = dirlen; nmp->nm_srvkrbnamelen = srvkrbnamelen; if (td->td_ucred->cr_uid != (uid_t)0) { /* * nm_uid is used to get KerberosV credentials for * the nfsv4 state handling operations if there is * no host based principal set. Use the uid of * this user if not root, since they are doing the * mount. I don't think setting this for root will * work, since root normally does not have user * credentials in a credentials cache. */ nmp->nm_uid = td->td_ucred->cr_uid; } else { /* * Just set to -1, so it won't be used. */ nmp->nm_uid = (uid_t)-1; } /* Copy and null terminate all the names */ if (nmp->nm_krbnamelen > 0) { bcopy(krbname, nmp->nm_krbname, nmp->nm_krbnamelen); nmp->nm_name[nmp->nm_krbnamelen] = '\0'; } if (nmp->nm_dirpathlen > 0) { bcopy(dirpath, NFSMNT_DIRPATH(nmp), nmp->nm_dirpathlen); nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen + 1] = '\0'; } if (nmp->nm_srvkrbnamelen > 0) { bcopy(srvkrbname, NFSMNT_SRVKRBNAME(nmp), nmp->nm_srvkrbnamelen); nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen + nmp->nm_srvkrbnamelen + 2] = '\0'; } nmp->nm_sockreq.nr_cred = crhold(cred); mtx_init(&nmp->nm_sockreq.nr_mtx, "nfssock", NULL, MTX_DEF); mp->mnt_data = nmp; nmp->nm_getinfo = nfs_getnlminfo; nmp->nm_vinvalbuf = ncl_vinvalbuf; } vfs_getnewfsid(mp); nmp->nm_mountp = mp; mtx_init(&nmp->nm_mtx, "NFSmount lock", NULL, MTX_DEF | MTX_DUPOK); /* * Since nfs_decode_args() might optionally set them, these * need to be set to defaults before the call, so that the * optional settings aren't overwritten. */ nmp->nm_nametimeo = nametimeo; nmp->nm_negnametimeo = negnametimeo; nmp->nm_timeo = NFS_TIMEO; nmp->nm_retry = NFS_RETRANS; nmp->nm_readahead = NFS_DEFRAHEAD; if (desiredvnodes >= 11000) nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000); else nmp->nm_wcommitsize = hibufspace / 10; if ((argp->flags & NFSMNT_NFSV4) != 0) nmp->nm_minorvers = minvers; else nmp->nm_minorvers = 0; nfs_decode_args(mp, nmp, argp, hst, cred, td); /* * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too * high, depending on whether we end up with negative offsets in * the client or server somewhere. 2GB-1 may be safer. * * For V3, ncl_fsinfo will adjust this as necessary. Assume maximum * that we can handle until we find out otherwise. */ if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) nmp->nm_maxfilesize = 0xffffffffLL; else nmp->nm_maxfilesize = OFF_MAX; if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) { nmp->nm_wsize = NFS_WSIZE; nmp->nm_rsize = NFS_RSIZE; nmp->nm_readdirsize = NFS_READDIRSIZE; } nmp->nm_numgrps = NFS_MAXGRPS; 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_fhsize = argp->fhsize; if (nmp->nm_fhsize > 0) bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize); bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN); nmp->nm_nam = nam; /* Set up the sockets and per-host congestion */ nmp->nm_sotype = argp->sotype; nmp->nm_soproto = argp->proto; nmp->nm_sockreq.nr_prog = NFS_PROG; if ((argp->flags & NFSMNT_NFSV4)) nmp->nm_sockreq.nr_vers = NFS_VER4; else if ((argp->flags & NFSMNT_NFSV3)) nmp->nm_sockreq.nr_vers = NFS_VER3; else nmp->nm_sockreq.nr_vers = NFS_VER2; if ((error = newnfs_connect(nmp, &nmp->nm_sockreq, cred, td, 0))) goto bad; /* For NFSv4.1, get the clientid now. */ if (nmp->nm_minorvers > 0) { NFSCL_DEBUG(3, "at getcl\n"); error = nfscl_getcl(mp, cred, td, 0, &clp); NFSCL_DEBUG(3, "aft getcl=%d\n", error); if (error != 0) goto bad; } if (nmp->nm_fhsize == 0 && (nmp->nm_flag & NFSMNT_NFSV4) && nmp->nm_dirpathlen > 0) { NFSCL_DEBUG(3, "in dirp\n"); /* * If the fhsize on the mount point == 0 for V4, the mount * path needs to be looked up. */ trycnt = 3; do { error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp), cred, td); NFSCL_DEBUG(3, "aft dirp=%d\n", error); if (error) (void) nfs_catnap(PZERO, error, "nfsgetdirp"); } while (error && --trycnt > 0); if (error) { error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0); goto bad; } } /* * 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). */ if (nmp->nm_fhsize > 0) { /* * Set f_iosize to NFS_DIRBLKSIZ so that bo_bsize gets set * non-zero for the root vnode. f_iosize will be set correctly * by nfs_statfs() before any I/O occurs. */ mp->mnt_stat.f_iosize = NFS_DIRBLKSIZ; error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE); if (error) goto bad; *vpp = NFSTOV(np); /* * Get file attributes and transfer parameters for the * mountpoint. This has the side effect of filling in * (*vpp)->v_type with the correct value. */ ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1, cred, td, &nfsva, NULL, &lease); if (ret) { /* * Just set default values to get things going. */ NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr)); nfsva.na_vattr.va_type = VDIR; nfsva.na_vattr.va_mode = 0777; nfsva.na_vattr.va_nlink = 100; nfsva.na_vattr.va_uid = (uid_t)0; nfsva.na_vattr.va_gid = (gid_t)0; nfsva.na_vattr.va_fileid = 2; nfsva.na_vattr.va_gen = 1; nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE; nfsva.na_vattr.va_size = 512 * 1024; lease = 60; } (void) nfscl_loadattrcache(vpp, &nfsva, NULL, NULL, 0, 1); if (nmp->nm_minorvers > 0) { NFSCL_DEBUG(3, "lease=%d\n", (int)lease); NFSLOCKCLSTATE(); clp->nfsc_renew = NFSCL_RENEW(lease); clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; clp->nfsc_clientidrev++; if (clp->nfsc_clientidrev == 0) clp->nfsc_clientidrev++; NFSUNLOCKCLSTATE(); /* * Mount will succeed, so the renew thread can be * started now. */ nfscl_start_renewthread(clp); nfscl_clientrelease(clp); } if (argp->flags & NFSMNT_NFSV3) ncl_fsinfo(nmp, *vpp, cred, td); /* Mark if the mount point supports NFSv4 ACLs. */ if ((argp->flags & NFSMNT_NFSV4) != 0 && nfsrv_useacl != 0 && ret == 0 && NFSISSET_ATTRBIT(&nfsva.na_suppattr, NFSATTRBIT_ACL)) { MNT_ILOCK(mp); mp->mnt_flag |= MNT_NFS4ACLS; MNT_IUNLOCK(mp); } /* * Lose the lock but keep the ref. */ NFSVOPUNLOCK(*vpp, 0); return (0); } error = EIO; bad: if (clp != NULL) nfscl_clientrelease(clp); newnfs_disconnect(&nmp->nm_sockreq); crfree(nmp->nm_sockreq.nr_cred); if (nmp->nm_sockreq.nr_auth != NULL) AUTH_DESTROY(nmp->nm_sockreq.nr_auth); mtx_destroy(&nmp->nm_sockreq.nr_mtx); mtx_destroy(&nmp->nm_mtx); if (nmp->nm_clp != NULL) { NFSLOCKCLSTATE(); LIST_REMOVE(nmp->nm_clp, nfsc_list); NFSUNLOCKCLSTATE(); free(nmp->nm_clp, M_NFSCLCLIENT); } TAILQ_FOREACH_SAFE(dsp, &nmp->nm_sess, nfsclds_list, tdsp) nfscl_freenfsclds(dsp); FREE(nmp, M_NEWNFSMNT); FREE(nam, M_SONAME); return (error); } /* * unmount system call */ static int nfs_unmount(struct mount *mp, int mntflags) { struct thread *td; struct nfsmount *nmp; int error, flags = 0, i, trycnt = 0; struct nfsclds *dsp, *tdsp; td = curthread; if (mntflags & MNT_FORCE) flags |= FORCECLOSE; nmp = VFSTONFS(mp); /* * Goes something like this.. * - Call vflush() to clear out vnodes for this filesystem * - Close the socket * - Free up the data structures */ /* In the forced case, cancel any outstanding requests. */ if (mntflags & MNT_FORCE) { error = newnfs_nmcancelreqs(nmp); if (error) goto out; /* For a forced close, get rid of the renew thread now */ nfscl_umount(nmp, td); } /* We hold 1 extra ref on the root vnode; see comment in mountnfs(). */ do { error = vflush(mp, 1, flags, td); if ((mntflags & MNT_FORCE) && error != 0 && ++trycnt < 30) (void) nfs_catnap(PSOCK, error, "newndm"); } while ((mntflags & MNT_FORCE) && error != 0 && trycnt < 30); if (error) goto out; /* * We are now committed to the unmount. */ if ((mntflags & MNT_FORCE) == 0) nfscl_umount(nmp, td); /* Make sure no nfsiods are assigned to this mount. */ mtx_lock(&ncl_iod_mutex); for (i = 0; i < NFS_MAXASYNCDAEMON; i++) if (ncl_iodmount[i] == nmp) { ncl_iodwant[i] = NFSIOD_AVAILABLE; ncl_iodmount[i] = NULL; } mtx_unlock(&ncl_iod_mutex); newnfs_disconnect(&nmp->nm_sockreq); crfree(nmp->nm_sockreq.nr_cred); FREE(nmp->nm_nam, M_SONAME); if (nmp->nm_sockreq.nr_auth != NULL) AUTH_DESTROY(nmp->nm_sockreq.nr_auth); mtx_destroy(&nmp->nm_sockreq.nr_mtx); mtx_destroy(&nmp->nm_mtx); TAILQ_FOREACH_SAFE(dsp, &nmp->nm_sess, nfsclds_list, tdsp) nfscl_freenfsclds(dsp); FREE(nmp, M_NEWNFSMNT); out: return (error); } /* * Return root of a filesystem */ static int nfs_root(struct mount *mp, int flags, struct vnode **vpp) { struct vnode *vp; struct nfsmount *nmp; struct nfsnode *np; int error; nmp = VFSTONFS(mp); error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, flags); if (error) return error; vp = NFSTOV(np); /* * Get transfer parameters and attributes for root vnode once. */ mtx_lock(&nmp->nm_mtx); if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) { mtx_unlock(&nmp->nm_mtx); ncl_fsinfo(nmp, vp, curthread->td_ucred, curthread); } else mtx_unlock(&nmp->nm_mtx); if (vp->v_type == VNON) vp->v_type = VDIR; vp->v_vflag |= VV_ROOT; *vpp = vp; return (0); } /* * Flush out the buffer cache */ /* ARGSUSED */ static int nfs_sync(struct mount *mp, int waitfor) { struct vnode *vp, *mvp; struct thread *td; int error, allerror = 0; td = curthread; MNT_ILOCK(mp); /* * If a forced dismount is in progress, return from here so that * the umount(2) syscall doesn't get stuck in VFS_SYNC() before * calling VFS_UNMOUNT(). */ if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) { MNT_IUNLOCK(mp); return (EBADF); } MNT_IUNLOCK(mp); /* * Force stale buffer cache information to be flushed. */ loop: MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { /* XXX Racy bv_cnt check. */ if (NFSVOPISLOCKED(vp) || vp->v_bufobj.bo_dirty.bv_cnt == 0 || waitfor == MNT_LAZY) { VI_UNLOCK(vp); continue; } if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) { MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); goto loop; } error = VOP_FSYNC(vp, waitfor, td); if (error) allerror = error; NFSVOPUNLOCK(vp, 0); vrele(vp); } return (allerror); } static int nfs_sysctl(struct mount *mp, fsctlop_t op, struct sysctl_req *req) { struct nfsmount *nmp = VFSTONFS(mp); struct vfsquery vq; int error; bzero(&vq, sizeof(vq)); switch (op) { #if 0 case VFS_CTL_NOLOCKS: val = (nmp->nm_flag & NFSMNT_NOLOCKS) ? 1 : 0; if (req->oldptr != NULL) { error = SYSCTL_OUT(req, &val, sizeof(val)); if (error) return (error); } if (req->newptr != NULL) { error = SYSCTL_IN(req, &val, sizeof(val)); if (error) return (error); if (val) nmp->nm_flag |= NFSMNT_NOLOCKS; else nmp->nm_flag &= ~NFSMNT_NOLOCKS; } break; #endif case VFS_CTL_QUERY: mtx_lock(&nmp->nm_mtx); if (nmp->nm_state & NFSSTA_TIMEO) vq.vq_flags |= VQ_NOTRESP; mtx_unlock(&nmp->nm_mtx); #if 0 if (!(nmp->nm_flag & NFSMNT_NOLOCKS) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) vq.vq_flags |= VQ_NOTRESPLOCK; #endif error = SYSCTL_OUT(req, &vq, sizeof(vq)); break; case VFS_CTL_TIMEO: if (req->oldptr != NULL) { error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay, sizeof(nmp->nm_tprintf_initial_delay)); if (error) return (error); } if (req->newptr != NULL) { error = vfs_suser(mp, req->td); if (error) return (error); error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay, sizeof(nmp->nm_tprintf_initial_delay)); if (error) return (error); if (nmp->nm_tprintf_initial_delay < 0) nmp->nm_tprintf_initial_delay = 0; } break; default: return (ENOTSUP); } return (0); } /* * Purge any RPCs in progress, so that they will all return errors. * This allows dounmount() to continue as far as VFS_UNMOUNT() for a * forced dismount. */ static void nfs_purge(struct mount *mp) { struct nfsmount *nmp = VFSTONFS(mp); newnfs_nmcancelreqs(nmp); } /* * Extract the information needed by the nlm from the nfs vnode. */ static void nfs_getnlminfo(struct vnode *vp, uint8_t *fhp, size_t *fhlenp, struct sockaddr_storage *sp, int *is_v3p, off_t *sizep, struct timeval *timeop) { struct nfsmount *nmp; struct nfsnode *np = VTONFS(vp); nmp = VFSTONFS(vp->v_mount); if (fhlenp != NULL) *fhlenp = (size_t)np->n_fhp->nfh_len; if (fhp != NULL) bcopy(np->n_fhp->nfh_fh, fhp, np->n_fhp->nfh_len); if (sp != NULL) bcopy(nmp->nm_nam, sp, min(nmp->nm_nam->sa_len, sizeof(*sp))); if (is_v3p != NULL) *is_v3p = NFS_ISV3(vp); if (sizep != NULL) *sizep = np->n_size; if (timeop != NULL) { timeop->tv_sec = nmp->nm_timeo / NFS_HZ; timeop->tv_usec = (nmp->nm_timeo % NFS_HZ) * (1000000 / NFS_HZ); } } /* * This function prints out an option name, based on the conditional * argument. */ static __inline void nfscl_printopt(struct nfsmount *nmp, int testval, char *opt, char **buf, size_t *blen) { int len; if (testval != 0 && *blen > strlen(opt)) { len = snprintf(*buf, *blen, "%s", opt); if (len != strlen(opt)) printf("EEK!!\n"); *buf += len; *blen -= len; } } /* * This function printf out an options integer value. */ static __inline void nfscl_printoptval(struct nfsmount *nmp, int optval, char *opt, char **buf, size_t *blen) { int len; if (*blen > strlen(opt) + 1) { /* Could result in truncated output string. */ len = snprintf(*buf, *blen, "%s=%d", opt, optval); if (len < *blen) { *buf += len; *blen -= len; } } } /* * Load the option flags and values into the buffer. */ void nfscl_retopts(struct nfsmount *nmp, char *buffer, size_t buflen) { char *buf; size_t blen; buf = buffer; blen = buflen; nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV4) != 0, "nfsv4", &buf, &blen); if ((nmp->nm_flag & NFSMNT_NFSV4) != 0) { nfscl_printoptval(nmp, nmp->nm_minorvers, ",minorversion", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_PNFS) != 0, ",pnfs", &buf, &blen); } nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV3) != 0, "nfsv3", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0, "nfsv2", &buf, &blen); nfscl_printopt(nmp, nmp->nm_sotype == SOCK_STREAM, ",tcp", &buf, &blen); nfscl_printopt(nmp, nmp->nm_sotype != SOCK_STREAM, ",udp", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RESVPORT) != 0, ",resvport", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCONN) != 0, ",noconn", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) == 0, ",hard", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) != 0, ",soft", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_INT) != 0, ",intr", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) == 0, ",cto", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) != 0, ",nocto", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NONCONTIGWR) != 0, ",noncontigwr", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) == 0, ",lockd", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) == NFSMNT_NOLOCKD, ",nolockd", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RDIRPLUS) != 0, ",rdirplus", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_KERB) == 0, ",sec=sys", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY | NFSMNT_PRIVACY)) == NFSMNT_KERB, ",sec=krb5", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY | NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_INTEGRITY), ",sec=krb5i", &buf, &blen); nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY | NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_PRIVACY), ",sec=krb5p", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_acdirmin, ",acdirmin", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_acdirmax, ",acdirmax", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_acregmin, ",acregmin", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_acregmax, ",acregmax", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_nametimeo, ",nametimeo", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_negnametimeo, ",negnametimeo", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_rsize, ",rsize", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_wsize, ",wsize", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_readdirsize, ",readdirsize", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_readahead, ",readahead", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_wcommitsize, ",wcommitsize", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_timeo, ",timeout", &buf, &blen); nfscl_printoptval(nmp, nmp->nm_retry, ",retrans", &buf, &blen); } Index: head/sys/fs/nfsserver/nfs_nfsdport.c =================================================================== --- head/sys/fs/nfsserver/nfs_nfsdport.c (revision 281724) +++ head/sys/fs/nfsserver/nfs_nfsdport.c (revision 281725) @@ -1,3411 +1,3411 @@ /*- * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include __FBSDID("$FreeBSD$"); #include /* * Functions that perform the vfs operations required by the routines in * nfsd_serv.c. It is hoped that this change will make the server more * portable. */ #include #include #include #include #include FEATURE(nfsd, "NFSv4 server"); extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; extern int nfsrv_useacl; extern int newnfs_numnfsd; extern struct mount nfsv4root_mnt; extern struct nfsrv_stablefirst nfsrv_stablefirst; extern void (*nfsd_call_servertimer)(void); extern SVCPOOL *nfsrvd_pool; extern struct nfsv4lock nfsd_suspend_lock; extern struct nfssessionhash nfssessionhash[NFSSESSIONHASHSIZE]; struct vfsoptlist nfsv4root_opt, nfsv4root_newopt; NFSDLOCKMUTEX; struct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE]; struct nfsrchash_bucket nfsrcahash_table[NFSRVCACHE_HASHSIZE]; struct mtx nfsrc_udpmtx; struct mtx nfs_v4root_mutex; struct nfsrvfh nfs_rootfh, nfs_pubfh; int nfs_pubfhset = 0, nfs_rootfhset = 0; struct proc *nfsd_master_proc = NULL; int nfsd_debuglevel = 0; static pid_t nfsd_master_pid = (pid_t)-1; static char nfsd_master_comm[MAXCOMLEN + 1]; static struct timeval nfsd_master_start; static uint32_t nfsv4_sysid = 0; static int nfssvc_srvcall(struct thread *, struct nfssvc_args *, struct ucred *); int nfsrv_enable_crossmntpt = 1; static int nfs_commit_blks; static int nfs_commit_miss; extern int nfsrv_issuedelegs; extern int nfsrv_dolocallocks; extern int nfsd_enable_stringtouid; -SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); +SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "NFS server"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, ""); SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, ""); SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel, - 0, "Debug level for new nfs server"); + 0, "Debug level for NFS server"); SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, CTLFLAG_RW, &nfsd_enable_stringtouid, 0, "Enable nfsd to accept numeric owner_names"); #define MAX_REORDERED_RPC 16 #define NUM_HEURISTIC 1031 #define NHUSE_INIT 64 #define NHUSE_INC 16 #define NHUSE_MAX 2048 static struct nfsheur { struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ off_t nh_nextoff; /* next offset for sequential detection */ int nh_use; /* use count for selection */ int nh_seqcount; /* heuristic */ } nfsheur[NUM_HEURISTIC]; /* * Heuristic to detect sequential operation. */ static struct nfsheur * nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) { struct nfsheur *nh; int hi, try; /* Locate best candidate. */ try = 32; hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; nh = &nfsheur[hi]; while (try--) { if (nfsheur[hi].nh_vp == vp) { nh = &nfsheur[hi]; break; } if (nfsheur[hi].nh_use > 0) --nfsheur[hi].nh_use; hi = (hi + 1) % NUM_HEURISTIC; if (nfsheur[hi].nh_use < nh->nh_use) nh = &nfsheur[hi]; } /* Initialize hint if this is a new file. */ if (nh->nh_vp != vp) { nh->nh_vp = vp; nh->nh_nextoff = uio->uio_offset; nh->nh_use = NHUSE_INIT; if (uio->uio_offset == 0) nh->nh_seqcount = 4; else nh->nh_seqcount = 1; } /* Calculate heuristic. */ if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || uio->uio_offset == nh->nh_nextoff) { /* See comments in vfs_vnops.c:sequential_heuristic(). */ nh->nh_seqcount += howmany(uio->uio_resid, 16384); if (nh->nh_seqcount > IO_SEQMAX) nh->nh_seqcount = IO_SEQMAX; } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { /* Probably a reordered RPC, leave seqcount alone. */ } else if (nh->nh_seqcount > 1) { nh->nh_seqcount /= 2; } else { nh->nh_seqcount = 0; } nh->nh_use += NHUSE_INC; if (nh->nh_use > NHUSE_MAX) nh->nh_use = NHUSE_MAX; return (nh); } /* * Get attributes into nfsvattr structure. */ int nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, struct thread *p, int vpislocked) { int error, lockedit = 0; if (vpislocked == 0) { /* * When vpislocked == 0, the vnode is either exclusively * locked by this thread or not locked by this thread. * As such, shared lock it, if not exclusively locked. */ if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { lockedit = 1; NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); } } error = VOP_GETATTR(vp, &nvap->na_vattr, cred); if (lockedit != 0) NFSVOPUNLOCK(vp, 0); NFSEXITCODE(error); return (error); } /* * Get a file handle for a vnode. */ int nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) { int error; NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; error = VOP_VPTOFH(vp, &fhp->fh_fid); NFSEXITCODE(error); return (error); } /* * Perform access checking for vnodes obtained from file handles that would * refer to files already opened by a Unix client. You cannot just use * vn_writechk() and VOP_ACCESSX() for two reasons. * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write * case. * 2 - The owner is to be given access irrespective of mode bits for some * operations, so that processes that chmod after opening a file don't * break. */ int nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, u_int32_t *supportedtypep) { struct vattr vattr; int error = 0, getret = 0; if (vpislocked == 0) { if (NFSVOPLOCK(vp, LK_SHARED) != 0) { error = EPERM; goto out; } } if (accmode & VWRITE) { /* Just vn_writechk() changed to check rdonly */ /* * Disallow write attempts on read-only file systems; * unless the file is a socket or a block or character * device resident on the file system. */ if (NFSVNO_EXRDONLY(exp) || (vp->v_mount->mnt_flag & MNT_RDONLY)) { switch (vp->v_type) { case VREG: case VDIR: case VLNK: error = EROFS; default: break; } } /* * If there's shared text associated with * the inode, try to free it up once. If * we fail, we can't allow writing. */ if (VOP_IS_TEXT(vp) && error == 0) error = ETXTBSY; } if (error != 0) { if (vpislocked == 0) NFSVOPUNLOCK(vp, 0); goto out; } /* * Should the override still be applied when ACLs are enabled? */ error = VOP_ACCESSX(vp, accmode, cred, p); if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { /* * Try again with VEXPLICIT_DENY, to see if the test for * deletion is supported. */ error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); if (error == 0) { if (vp->v_type == VDIR) { accmode &= ~(VDELETE | VDELETE_CHILD); accmode |= VWRITE; error = VOP_ACCESSX(vp, accmode, cred, p); } else if (supportedtypep != NULL) { *supportedtypep &= ~NFSACCESS_DELETE; } } } /* * Allow certain operations for the owner (reads and writes * on files that are already open). */ if (override != NFSACCCHK_NOOVERRIDE && (error == EPERM || error == EACCES)) { if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) error = 0; else if (override & NFSACCCHK_ALLOWOWNER) { getret = VOP_GETATTR(vp, &vattr, cred); if (getret == 0 && cred->cr_uid == vattr.va_uid) error = 0; } } if (vpislocked == 0) NFSVOPUNLOCK(vp, 0); out: NFSEXITCODE(error); return (error); } /* * Set attribute(s) vnop. */ int nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { int error; error = VOP_SETATTR(vp, &nvap->na_vattr, cred); NFSEXITCODE(error); return (error); } /* * Set up nameidata for a lookup() call and do it. */ int nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, struct vnode **retdirp) { struct componentname *cnp = &ndp->ni_cnd; int i; struct iovec aiov; struct uio auio; int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; int error = 0, crossmnt; char *cp; *retdirp = NULL; cnp->cn_nameptr = cnp->cn_pnbuf; ndp->ni_strictrelative = 0; /* * Extract and set starting directory. */ if (dp->v_type != VDIR) { if (islocked) vput(dp); else vrele(dp); nfsvno_relpathbuf(ndp); error = ENOTDIR; goto out1; } if (islocked) NFSVOPUNLOCK(dp, 0); VREF(dp); *retdirp = dp; if (NFSVNO_EXRDONLY(exp)) cnp->cn_flags |= RDONLY; ndp->ni_segflg = UIO_SYSSPACE; crossmnt = 1; if (nd->nd_flag & ND_PUBLOOKUP) { ndp->ni_loopcnt = 0; if (cnp->cn_pnbuf[0] == '/') { vrele(dp); /* * Check for degenerate pathnames here, since lookup() * panics on them. */ for (i = 1; i < ndp->ni_pathlen; i++) if (cnp->cn_pnbuf[i] != '/') break; if (i == ndp->ni_pathlen) { error = NFSERR_ACCES; goto out; } dp = rootvnode; VREF(dp); } } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || (nd->nd_flag & ND_NFSV4) == 0) { /* * Only cross mount points for NFSv4 when doing a * mount while traversing the file system above * the mount point, unless nfsrv_enable_crossmntpt is set. */ cnp->cn_flags |= NOCROSSMOUNT; crossmnt = 0; } /* * Initialize for scan, set ni_startdir and bump ref on dp again * because lookup() will dereference ni_startdir. */ cnp->cn_thread = p; ndp->ni_startdir = dp; ndp->ni_rootdir = rootvnode; ndp->ni_topdir = NULL; if (!lockleaf) cnp->cn_flags |= LOCKLEAF; for (;;) { cnp->cn_nameptr = cnp->cn_pnbuf; /* * Call lookup() to do the real work. If an error occurs, * ndp->ni_vp and ni_dvp are left uninitialized or NULL and * we do not have to dereference anything before returning. * In either case ni_startdir will be dereferenced and NULLed * out. */ error = lookup(ndp); if (error) break; /* * Check for encountering a symbolic link. Trivial * termination occurs if no symlink encountered. */ if ((cnp->cn_flags & ISSYMLINK) == 0) { if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) nfsvno_relpathbuf(ndp); if (ndp->ni_vp && !lockleaf) NFSVOPUNLOCK(ndp->ni_vp, 0); break; } /* * Validate symlink */ if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) NFSVOPUNLOCK(ndp->ni_dvp, 0); if (!(nd->nd_flag & ND_PUBLOOKUP)) { error = EINVAL; goto badlink2; } if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { error = ELOOP; goto badlink2; } if (ndp->ni_pathlen > 1) cp = uma_zalloc(namei_zone, M_WAITOK); else cp = cnp->cn_pnbuf; aiov.iov_base = cp; aiov.iov_len = MAXPATHLEN; auio.uio_iov = &aiov; auio.uio_iovcnt = 1; auio.uio_offset = 0; auio.uio_rw = UIO_READ; auio.uio_segflg = UIO_SYSSPACE; auio.uio_td = NULL; auio.uio_resid = MAXPATHLEN; error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); if (error) { badlink1: if (ndp->ni_pathlen > 1) uma_zfree(namei_zone, cp); badlink2: vrele(ndp->ni_dvp); vput(ndp->ni_vp); break; } linklen = MAXPATHLEN - auio.uio_resid; if (linklen == 0) { error = ENOENT; goto badlink1; } if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { error = ENAMETOOLONG; goto badlink1; } /* * Adjust or replace path */ if (ndp->ni_pathlen > 1) { NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); uma_zfree(namei_zone, cnp->cn_pnbuf); cnp->cn_pnbuf = cp; } else cnp->cn_pnbuf[linklen] = '\0'; ndp->ni_pathlen += linklen; /* * Cleanup refs for next loop and check if root directory * should replace current directory. Normally ni_dvp * becomes the new base directory and is cleaned up when * we loop. Explicitly null pointers after invalidation * to clarify operation. */ vput(ndp->ni_vp); ndp->ni_vp = NULL; if (cnp->cn_pnbuf[0] == '/') { vrele(ndp->ni_dvp); ndp->ni_dvp = ndp->ni_rootdir; VREF(ndp->ni_dvp); } ndp->ni_startdir = ndp->ni_dvp; ndp->ni_dvp = NULL; } if (!lockleaf) cnp->cn_flags &= ~LOCKLEAF; out: if (error) { nfsvno_relpathbuf(ndp); ndp->ni_vp = NULL; ndp->ni_dvp = NULL; ndp->ni_startdir = NULL; } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { ndp->ni_dvp = NULL; } out1: NFSEXITCODE2(error, nd); return (error); } /* * Set up a pathname buffer and return a pointer to it and, optionally * set a hash pointer. */ void nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) { struct componentname *cnp = &ndp->ni_cnd; cnp->cn_flags |= (NOMACCHECK | HASBUF); cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); if (hashpp != NULL) *hashpp = NULL; *bufpp = cnp->cn_pnbuf; } /* * Release the above path buffer, if not released by nfsvno_namei(). */ void nfsvno_relpathbuf(struct nameidata *ndp) { if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) panic("nfsrelpath"); uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); ndp->ni_cnd.cn_flags &= ~HASBUF; } /* * Readlink vnode op into an mbuf list. */ int nfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, struct mbuf **mpp, struct mbuf **mpendp, int *lenp) { struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; struct iovec *ivp = iv; struct uio io, *uiop = &io; struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; int i, len, tlen, error = 0; len = 0; i = 0; while (len < NFS_MAXPATHLEN) { NFSMGET(mp); MCLGET(mp, M_WAITOK); mp->m_len = M_SIZE(mp); if (len == 0) { mp3 = mp2 = mp; } else { mp2->m_next = mp; mp2 = mp; } if ((len + mp->m_len) > NFS_MAXPATHLEN) { mp->m_len = NFS_MAXPATHLEN - len; len = NFS_MAXPATHLEN; } else { len += mp->m_len; } ivp->iov_base = mtod(mp, caddr_t); ivp->iov_len = mp->m_len; i++; ivp++; } uiop->uio_iov = iv; uiop->uio_iovcnt = i; uiop->uio_offset = 0; uiop->uio_resid = len; uiop->uio_rw = UIO_READ; uiop->uio_segflg = UIO_SYSSPACE; uiop->uio_td = NULL; error = VOP_READLINK(vp, uiop, cred); if (error) { m_freem(mp3); *lenp = 0; goto out; } if (uiop->uio_resid > 0) { len -= uiop->uio_resid; tlen = NFSM_RNDUP(len); nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); } *lenp = len; *mpp = mp3; *mpendp = mp; out: NFSEXITCODE(error); return (error); } /* * Read vnode op call into mbuf list. */ int nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) { struct mbuf *m; int i; struct iovec *iv; struct iovec *iv2; int error = 0, len, left, siz, tlen, ioflag = 0; struct mbuf *m2 = NULL, *m3; struct uio io, *uiop = &io; struct nfsheur *nh; len = left = NFSM_RNDUP(cnt); m3 = NULL; /* * Generate the mbuf list with the uio_iov ref. to it. */ i = 0; while (left > 0) { NFSMGET(m); MCLGET(m, M_WAITOK); m->m_len = 0; siz = min(M_TRAILINGSPACE(m), left); left -= siz; i++; if (m3) m2->m_next = m; else m3 = m; m2 = m; } MALLOC(iv, struct iovec *, i * sizeof (struct iovec), M_TEMP, M_WAITOK); uiop->uio_iov = iv2 = iv; m = m3; left = len; i = 0; while (left > 0) { if (m == NULL) panic("nfsvno_read iov"); siz = min(M_TRAILINGSPACE(m), left); if (siz > 0) { iv->iov_base = mtod(m, caddr_t) + m->m_len; iv->iov_len = siz; m->m_len += siz; left -= siz; iv++; i++; } m = m->m_next; } uiop->uio_iovcnt = i; uiop->uio_offset = off; uiop->uio_resid = len; uiop->uio_rw = UIO_READ; uiop->uio_segflg = UIO_SYSSPACE; uiop->uio_td = NULL; nh = nfsrv_sequential_heuristic(uiop, vp); ioflag |= nh->nh_seqcount << IO_SEQSHIFT; error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); FREE((caddr_t)iv2, M_TEMP); if (error) { m_freem(m3); *mpp = NULL; goto out; } nh->nh_nextoff = uiop->uio_offset; tlen = len - uiop->uio_resid; cnt = cnt < tlen ? cnt : tlen; tlen = NFSM_RNDUP(cnt); if (tlen == 0) { m_freem(m3); m3 = NULL; } else if (len != tlen || tlen != cnt) nfsrv_adj(m3, len - tlen, tlen - cnt); *mpp = m3; *mpendp = m2; out: NFSEXITCODE(error); return (error); } /* * Write vnode op from an mbuf list. */ int nfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) { struct iovec *ivp; int i, len; struct iovec *iv; int ioflags, error; struct uio io, *uiop = &io; struct nfsheur *nh; MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, M_WAITOK); uiop->uio_iov = iv = ivp; uiop->uio_iovcnt = cnt; i = mtod(mp, caddr_t) + mp->m_len - cp; len = retlen; while (len > 0) { if (mp == NULL) panic("nfsvno_write"); if (i > 0) { i = min(i, len); ivp->iov_base = cp; ivp->iov_len = i; ivp++; len -= i; } mp = mp->m_next; if (mp) { i = mp->m_len; cp = mtod(mp, caddr_t); } } if (stable == NFSWRITE_UNSTABLE) ioflags = IO_NODELOCKED; else ioflags = (IO_SYNC | IO_NODELOCKED); uiop->uio_resid = retlen; uiop->uio_rw = UIO_WRITE; uiop->uio_segflg = UIO_SYSSPACE; NFSUIOPROC(uiop, p); uiop->uio_offset = off; nh = nfsrv_sequential_heuristic(uiop, vp); ioflags |= nh->nh_seqcount << IO_SEQSHIFT; error = VOP_WRITE(vp, uiop, ioflags, cred); if (error == 0) nh->nh_nextoff = uiop->uio_offset; FREE((caddr_t)iv, M_TEMP); NFSEXITCODE(error); return (error); } /* * Common code for creating a regular file (plus special files for V2). */ int nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) { u_quad_t tempsize; int error; error = nd->nd_repstat; if (!error && ndp->ni_vp == NULL) { if (nvap->na_type == VREG || nvap->na_type == VSOCK) { vrele(ndp->ni_startdir); error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); if (!error) { if (*exclusive_flagp) { *exclusive_flagp = 0; NFSVNO_ATTRINIT(nvap); nvap->na_atime.tv_sec = cverf[0]; nvap->na_atime.tv_nsec = cverf[1]; error = VOP_SETATTR(ndp->ni_vp, &nvap->na_vattr, nd->nd_cred); } } /* * NFS V2 Only. nfsrvd_mknod() does this for V3. * (This implies, just get out on an error.) */ } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || nvap->na_type == VFIFO) { if (nvap->na_type == VCHR && rdev == 0xffffffff) nvap->na_type = VFIFO; if (nvap->na_type != VFIFO && (error = priv_check_cred(nd->nd_cred, PRIV_VFS_MKNOD_DEV, 0))) { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vput(ndp->ni_dvp); goto out; } nvap->na_rdev = rdev; error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); vrele(ndp->ni_startdir); if (error) goto out; } else { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vput(ndp->ni_dvp); error = ENXIO; goto out; } *vpp = ndp->ni_vp; } else { /* * Handle cases where error is already set and/or * the file exists. * 1 - clean up the lookup * 2 - iff !error and na_size set, truncate it */ vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); *vpp = ndp->ni_vp; if (ndp->ni_dvp == *vpp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); if (!error && nvap->na_size != VNOVAL) { error = nfsvno_accchk(*vpp, VWRITE, nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, NFSACCCHK_VPISLOCKED, NULL); if (!error) { tempsize = nvap->na_size; NFSVNO_ATTRINIT(nvap); nvap->na_size = tempsize; error = VOP_SETATTR(*vpp, &nvap->na_vattr, nd->nd_cred); } } if (error) vput(*vpp); } out: NFSEXITCODE(error); return (error); } /* * Do a mknod vnode op. */ int nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, struct thread *p) { int error = 0; enum vtype vtyp; vtyp = nvap->na_type; /* * Iff doesn't exist, create it. */ if (ndp->ni_vp) { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vput(ndp->ni_dvp); vrele(ndp->ni_vp); error = EEXIST; goto out; } if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vput(ndp->ni_dvp); error = NFSERR_BADTYPE; goto out; } if (vtyp == VSOCK) { vrele(ndp->ni_startdir); error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); } else { if (nvap->na_type != VFIFO && (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vput(ndp->ni_dvp); goto out; } error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); vrele(ndp->ni_startdir); /* * Since VOP_MKNOD returns the ni_vp, I can't * see any reason to do the lookup. */ } out: NFSEXITCODE(error); return (error); } /* * Mkdir vnode op. */ int nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { int error = 0; if (ndp->ni_vp != NULL) { if (ndp->ni_dvp == ndp->ni_vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); vrele(ndp->ni_vp); nfsvno_relpathbuf(ndp); error = EEXIST; goto out; } error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); out: NFSEXITCODE(error); return (error); } /* * symlink vnode op. */ int nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { int error = 0; if (ndp->ni_vp) { vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); if (ndp->ni_dvp == ndp->ni_vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); vrele(ndp->ni_vp); error = EEXIST; goto out; } error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr, pathcp); vput(ndp->ni_dvp); vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); /* * Although FreeBSD still had the lookup code in * it for 7/current, there doesn't seem to be any * point, since VOP_SYMLINK() returns the ni_vp. * Just vput it for v2. */ if (!not_v2 && !error) vput(ndp->ni_vp); out: NFSEXITCODE(error); return (error); } /* * Parse symbolic link arguments. * This function has an ugly side effect. It will MALLOC() an area for * the symlink and set iov_base to point to it, only if it succeeds. * So, if it returns with uiop->uio_iov->iov_base != NULL, that must * be FREE'd later. */ int nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, struct thread *p, char **pathcpp, int *lenp) { u_int32_t *tl; char *pathcp = NULL; int error = 0, len; struct nfsv2_sattr *sp; *pathcpp = NULL; *lenp = 0; if ((nd->nd_flag & ND_NFSV3) && (error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p))) goto nfsmout; NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); len = fxdr_unsigned(int, *tl); if (len > NFS_MAXPATHLEN || len <= 0) { error = EBADRPC; goto nfsmout; } MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); error = nfsrv_mtostr(nd, pathcp, len); if (error) goto nfsmout; if (nd->nd_flag & ND_NFSV2) { NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); } *pathcpp = pathcp; *lenp = len; NFSEXITCODE2(0, nd); return (0); nfsmout: if (pathcp) free(pathcp, M_TEMP); NFSEXITCODE2(error, nd); return (error); } /* * Remove a non-directory object. */ int nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { struct vnode *vp; int error = 0; vp = ndp->ni_vp; if (vp->v_type == VDIR) error = NFSERR_ISDIR; else if (is_v4) error = nfsrv_checkremove(vp, 1, p); if (!error) error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); if (ndp->ni_dvp == vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); vput(vp); if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) nfsvno_relpathbuf(ndp); NFSEXITCODE(error); return (error); } /* * Remove a directory. */ int nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { struct vnode *vp; int error = 0; vp = ndp->ni_vp; if (vp->v_type != VDIR) { error = ENOTDIR; goto out; } /* * No rmdir "." please. */ if (ndp->ni_dvp == vp) { error = EINVAL; goto out; } /* * The root of a mounted filesystem cannot be deleted. */ if (vp->v_vflag & VV_ROOT) error = EBUSY; out: if (!error) error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); if (ndp->ni_dvp == vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); vput(vp); if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) nfsvno_relpathbuf(ndp); NFSEXITCODE(error); return (error); } /* * Rename vnode op. */ int nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) { struct vnode *fvp, *tvp, *tdvp; int error = 0; fvp = fromndp->ni_vp; if (ndstat) { vrele(fromndp->ni_dvp); vrele(fvp); error = ndstat; goto out1; } tdvp = tondp->ni_dvp; tvp = tondp->ni_vp; if (tvp != NULL) { if (fvp->v_type == VDIR && tvp->v_type != VDIR) { error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; goto out; } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; goto out; } if (tvp->v_type == VDIR && tvp->v_mountedhere) { error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; goto out; } /* * A rename to '.' or '..' results in a prematurely * unlocked vnode on FreeBSD5, so I'm just going to fail that * here. */ if ((tondp->ni_cnd.cn_namelen == 1 && tondp->ni_cnd.cn_nameptr[0] == '.') || (tondp->ni_cnd.cn_namelen == 2 && tondp->ni_cnd.cn_nameptr[0] == '.' && tondp->ni_cnd.cn_nameptr[1] == '.')) { error = EINVAL; goto out; } } if (fvp->v_type == VDIR && fvp->v_mountedhere) { error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; goto out; } if (fvp->v_mount != tdvp->v_mount) { error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; goto out; } if (fvp == tdvp) { error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; goto out; } if (fvp == tvp) { /* * If source and destination are the same, there is nothing to * do. Set error to -1 to indicate this. */ error = -1; goto out; } if (ndflag & ND_NFSV4) { if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { error = nfsrv_checkremove(fvp, 0, p); NFSVOPUNLOCK(fvp, 0); } else error = EPERM; if (tvp && !error) error = nfsrv_checkremove(tvp, 1, p); } else { /* * For NFSv2 and NFSv3, try to get rid of the delegation, so * that the NFSv4 client won't be confused by the rename. * Since nfsd_recalldelegation() can only be called on an * unlocked vnode at this point and fvp is the file that will * still exist after the rename, just do fvp. */ nfsd_recalldelegation(fvp, p); } out: if (!error) { error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, &tondp->ni_cnd); } else { if (tdvp == tvp) vrele(tdvp); else vput(tdvp); if (tvp) vput(tvp); vrele(fromndp->ni_dvp); vrele(fvp); if (error == -1) error = 0; } vrele(tondp->ni_startdir); nfsvno_relpathbuf(tondp); out1: vrele(fromndp->ni_startdir); nfsvno_relpathbuf(fromndp); NFSEXITCODE(error); return (error); } /* * Link vnode op. */ int nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, struct thread *p, struct nfsexstuff *exp) { struct vnode *xp; int error = 0; xp = ndp->ni_vp; if (xp != NULL) { error = EEXIST; } else { xp = ndp->ni_dvp; if (vp->v_mount != xp->v_mount) error = EXDEV; } if (!error) { NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); if ((vp->v_iflag & VI_DOOMED) == 0) error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); else error = EPERM; if (ndp->ni_dvp == vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); NFSVOPUNLOCK(vp, 0); } else { if (ndp->ni_dvp == ndp->ni_vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); if (ndp->ni_vp) vrele(ndp->ni_vp); } nfsvno_relpathbuf(ndp); NFSEXITCODE(error); return (error); } /* * Do the fsync() appropriate for the commit. */ int nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, struct thread *td) { int error = 0; /* * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of * file is done. At this time VOP_FSYNC does not accept offset and * byte count parameters so call VOP_FSYNC the whole file for now. * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. * File systems that do not use the buffer cache (as indicated * by MNTK_USES_BCACHE not being set) must use VOP_FSYNC(). */ if (cnt == 0 || cnt > MAX_COMMIT_COUNT || (vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) { /* * Give up and do the whole thing */ if (vp->v_object && (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { VM_OBJECT_WLOCK(vp->v_object); vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); VM_OBJECT_WUNLOCK(vp->v_object); } error = VOP_FSYNC(vp, MNT_WAIT, td); } else { /* * Locate and synchronously write any buffers that fall * into the requested range. Note: we are assuming that * f_iosize is a power of 2. */ int iosize = vp->v_mount->mnt_stat.f_iosize; int iomask = iosize - 1; struct bufobj *bo; daddr_t lblkno; /* * Align to iosize boundry, super-align to page boundry. */ if (off & iomask) { cnt += off & iomask; off &= ~(u_quad_t)iomask; } if (off & PAGE_MASK) { cnt += off & PAGE_MASK; off &= ~(u_quad_t)PAGE_MASK; } lblkno = off / iosize; if (vp->v_object && (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { VM_OBJECT_WLOCK(vp->v_object); vm_object_page_clean(vp->v_object, off, off + cnt, OBJPC_SYNC); VM_OBJECT_WUNLOCK(vp->v_object); } bo = &vp->v_bufobj; BO_LOCK(bo); while (cnt > 0) { struct buf *bp; /* * If we have a buffer and it is marked B_DELWRI we * have to lock and write it. Otherwise the prior * write is assumed to have already been committed. * * gbincore() can return invalid buffers now so we * have to check that bit as well (though B_DELWRI * should not be set if B_INVAL is set there could be * a race here since we haven't locked the buffer). */ if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { BO_LOCK(bo); continue; /* retry */ } if ((bp->b_flags & (B_DELWRI|B_INVAL)) == B_DELWRI) { bremfree(bp); bp->b_flags &= ~B_ASYNC; bwrite(bp); ++nfs_commit_miss; } else BUF_UNLOCK(bp); BO_LOCK(bo); } ++nfs_commit_blks; if (cnt < iosize) break; cnt -= iosize; ++lblkno; } BO_UNLOCK(bo); } NFSEXITCODE(error); return (error); } /* * Statfs vnode op. */ int nfsvno_statfs(struct vnode *vp, struct statfs *sf) { int error; error = VFS_STATFS(vp->v_mount, sf); if (error == 0) { /* * Since NFS handles these values as unsigned on the * wire, there is no way to represent negative values, * so set them to 0. Without this, they will appear * to be very large positive values for clients like * Solaris10. */ if (sf->f_bavail < 0) sf->f_bavail = 0; if (sf->f_ffree < 0) sf->f_ffree = 0; } NFSEXITCODE(error); return (error); } /* * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but * must handle nfsrv_opencheck() calls after any other access checks. */ void nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, struct nfsexstuff *exp, struct vnode **vpp) { struct vnode *vp = NULL; u_quad_t tempsize; struct nfsexstuff nes; if (ndp->ni_vp == NULL) nd->nd_repstat = nfsrv_opencheck(clientid, stateidp, stp, NULL, nd, p, nd->nd_repstat); if (!nd->nd_repstat) { if (ndp->ni_vp == NULL) { vrele(ndp->ni_startdir); nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); vput(ndp->ni_dvp); nfsvno_relpathbuf(ndp); if (!nd->nd_repstat) { if (*exclusive_flagp) { *exclusive_flagp = 0; NFSVNO_ATTRINIT(nvap); nvap->na_atime.tv_sec = cverf[0]; nvap->na_atime.tv_nsec = cverf[1]; nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, &nvap->na_vattr, cred); } else { nfsrv_fixattr(nd, ndp->ni_vp, nvap, aclp, p, attrbitp, exp); } } vp = ndp->ni_vp; } else { if (ndp->ni_startdir) vrele(ndp->ni_startdir); nfsvno_relpathbuf(ndp); vp = ndp->ni_vp; if (create == NFSV4OPEN_CREATE) { if (ndp->ni_dvp == vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); } if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { if (ndp->ni_cnd.cn_flags & RDONLY) NFSVNO_SETEXRDONLY(&nes); else NFSVNO_EXINIT(&nes); nd->nd_repstat = nfsvno_accchk(vp, VWRITE, cred, &nes, p, NFSACCCHK_NOOVERRIDE, NFSACCCHK_VPISLOCKED, NULL); nd->nd_repstat = nfsrv_opencheck(clientid, stateidp, stp, vp, nd, p, nd->nd_repstat); if (!nd->nd_repstat) { tempsize = nvap->na_size; NFSVNO_ATTRINIT(nvap); nvap->na_size = tempsize; nd->nd_repstat = VOP_SETATTR(vp, &nvap->na_vattr, cred); } } else if (vp->v_type == VREG) { nd->nd_repstat = nfsrv_opencheck(clientid, stateidp, stp, vp, nd, p, nd->nd_repstat); } } } else { if (ndp->ni_cnd.cn_flags & HASBUF) nfsvno_relpathbuf(ndp); if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { vrele(ndp->ni_startdir); if (ndp->ni_dvp == ndp->ni_vp) vrele(ndp->ni_dvp); else vput(ndp->ni_dvp); if (ndp->ni_vp) vput(ndp->ni_vp); } } *vpp = vp; NFSEXITCODE2(0, nd); } /* * Updates the file rev and sets the mtime and ctime * to the current clock time, returning the va_filerev and va_Xtime * values. * Return ESTALE to indicate the vnode is VI_DOOMED. */ int nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, struct thread *p) { struct vattr va; VATTR_NULL(&va); vfs_timestamp(&va.va_mtime); if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); if ((vp->v_iflag & VI_DOOMED) != 0) return (ESTALE); } (void) VOP_SETATTR(vp, &va, cred); (void) nfsvno_getattr(vp, nvap, cred, p, 1); return (0); } /* * Glue routine to nfsv4_fillattr(). */ int nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, int isdgram, int reterr, int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) { int error; error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, mounted_on_fileno); NFSEXITCODE2(0, nd); return (error); } /* Since the Readdir vnode ops vary, put the entire functions in here. */ /* * nfs readdir service * - mallocs what it thinks is enough to read * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR * - calls VOP_READDIR() * - loops around building the reply * if the output generated exceeds count break out of loop * The NFSM_CLGET macro is used here so that the reply will be packed * tightly in mbuf clusters. * - it trims out records with d_fileno == 0 * this doesn't matter for Unix clients, but they might confuse clients * for other os'. * - it trims out records with d_type == DT_WHT * these cannot be seen through NFS (unless we extend the protocol) * The alternate call nfsrvd_readdirplus() does lookups as well. * PS: The NFS protocol spec. does not clarify what the "count" byte * argument is a count of.. just name strings and file id's or the * entire reply rpc or ... * I tried just file name and id sizes and it confused the Sun client, * so I am using the full rpc size now. The "paranoia.." comment refers * to including the status longwords that are not a part of the dir. * "entry" structures, but are in the rpc. */ int nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, struct vnode *vp, struct thread *p, struct nfsexstuff *exp) { struct dirent *dp; u_int32_t *tl; int dirlen; char *cpos, *cend, *rbuf; struct nfsvattr at; int nlen, error = 0, getret = 1; int siz, cnt, fullsiz, eofflag, ncookies; u_int64_t off, toff, verf; u_long *cookies = NULL, *cookiep; struct uio io; struct iovec iv; int is_ufs; if (nd->nd_repstat) { nfsrv_postopattr(nd, getret, &at); goto out; } if (nd->nd_flag & ND_NFSV2) { NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); off = fxdr_unsigned(u_quad_t, *tl++); } else { NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); off = fxdr_hyper(tl); tl += 2; verf = fxdr_hyper(tl); tl += 2; } toff = off; cnt = fxdr_unsigned(int, *tl); if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) cnt = NFS_SRVMAXDATA(nd); siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); fullsiz = siz; if (nd->nd_flag & ND_NFSV3) { nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); #if 0 /* * va_filerev is not sufficient as a cookie verifier, * since it is not supposed to change when entries are * removed/added unless that offset cookies returned to * the client are no longer valid. */ if (!nd->nd_repstat && toff && verf != at.na_filerev) nd->nd_repstat = NFSERR_BAD_COOKIE; #endif } if (!nd->nd_repstat && vp->v_type != VDIR) nd->nd_repstat = NFSERR_NOTDIR; if (nd->nd_repstat == 0 && cnt == 0) { if (nd->nd_flag & ND_NFSV2) /* NFSv2 does not have NFSERR_TOOSMALL */ nd->nd_repstat = EPERM; else nd->nd_repstat = NFSERR_TOOSMALL; } if (!nd->nd_repstat) nd->nd_repstat = nfsvno_accchk(vp, VEXEC, nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, NFSACCCHK_VPISLOCKED, NULL); if (nd->nd_repstat) { vput(vp); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); goto out; } is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); again: eofflag = 0; if (cookies) { free((caddr_t)cookies, M_TEMP); cookies = NULL; } iv.iov_base = rbuf; iv.iov_len = siz; io.uio_iov = &iv; io.uio_iovcnt = 1; io.uio_offset = (off_t)off; io.uio_resid = siz; io.uio_segflg = UIO_SYSSPACE; io.uio_rw = UIO_READ; io.uio_td = NULL; nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, &cookies); off = (u_int64_t)io.uio_offset; if (io.uio_resid) siz -= io.uio_resid; if (!cookies && !nd->nd_repstat) nd->nd_repstat = NFSERR_PERM; if (nd->nd_flag & ND_NFSV3) { getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); if (!nd->nd_repstat) nd->nd_repstat = getret; } /* * Handles the failed cases. nd->nd_repstat == 0 past here. */ if (nd->nd_repstat) { vput(vp); free((caddr_t)rbuf, M_TEMP); if (cookies) free((caddr_t)cookies, M_TEMP); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); goto out; } /* * If nothing read, return eof * rpc reply */ if (siz == 0) { vput(vp); if (nd->nd_flag & ND_NFSV2) { NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); } else { nfsrv_postopattr(nd, getret, &at); NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); txdr_hyper(at.na_filerev, tl); tl += 2; } *tl++ = newnfs_false; *tl = newnfs_true; FREE((caddr_t)rbuf, M_TEMP); FREE((caddr_t)cookies, M_TEMP); goto out; } /* * Check for degenerate cases of nothing useful read. * If so go try again */ cpos = rbuf; cend = rbuf + siz; dp = (struct dirent *)cpos; cookiep = cookies; /* * For some reason FreeBSD's ufs_readdir() chooses to back the * directory offset up to a block boundary, so it is necessary to * skip over the records that precede the requested offset. This * requires the assumption that file offset cookies monotonically * increase. */ while (cpos < cend && ncookies > 0 && (dp->d_fileno == 0 || dp->d_type == DT_WHT || (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) { cpos += dp->d_reclen; dp = (struct dirent *)cpos; cookiep++; ncookies--; } if (cpos >= cend || ncookies == 0) { siz = fullsiz; toff = off; goto again; } vput(vp); /* * dirlen is the size of the reply, including all XDR and must * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate * if the XDR should be included in "count", but to be safe, we do. * (Include the two booleans at the end of the reply in dirlen now.) */ if (nd->nd_flag & ND_NFSV3) { nfsrv_postopattr(nd, getret, &at); NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); txdr_hyper(at.na_filerev, tl); dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; } else { dirlen = 2 * NFSX_UNSIGNED; } /* Loop through the records and build reply */ while (cpos < cend && ncookies > 0) { nlen = dp->d_namlen; if (dp->d_fileno != 0 && dp->d_type != DT_WHT && nlen <= NFS_MAXNAMLEN) { if (nd->nd_flag & ND_NFSV3) dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); else dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); if (dirlen > cnt) { eofflag = 0; break; } /* * Build the directory record xdr from * the dirent entry. */ if (nd->nd_flag & ND_NFSV3) { NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); *tl++ = newnfs_true; *tl++ = 0; } else { NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); *tl++ = newnfs_true; } *tl = txdr_unsigned(dp->d_fileno); (void) nfsm_strtom(nd, dp->d_name, nlen); if (nd->nd_flag & ND_NFSV3) { NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); *tl++ = 0; } else NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); *tl = txdr_unsigned(*cookiep); } cpos += dp->d_reclen; dp = (struct dirent *)cpos; cookiep++; ncookies--; } if (cpos < cend) eofflag = 0; NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); *tl++ = newnfs_false; if (eofflag) *tl = newnfs_true; else *tl = newnfs_false; FREE((caddr_t)rbuf, M_TEMP); FREE((caddr_t)cookies, M_TEMP); out: NFSEXITCODE2(0, nd); return (0); nfsmout: vput(vp); NFSEXITCODE2(error, nd); return (error); } /* * Readdirplus for V3 and Readdir for V4. */ int nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, struct vnode *vp, struct thread *p, struct nfsexstuff *exp) { struct dirent *dp; u_int32_t *tl; int dirlen; char *cpos, *cend, *rbuf; struct vnode *nvp; fhandle_t nfh; struct nfsvattr nva, at, *nvap = &nva; struct mbuf *mb0, *mb1; struct nfsreferral *refp; int nlen, r, error = 0, getret = 1, usevget = 1; int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; caddr_t bpos0, bpos1; u_int64_t off, toff, verf; u_long *cookies = NULL, *cookiep; nfsattrbit_t attrbits, rderrbits, savbits; struct uio io; struct iovec iv; struct componentname cn; int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls; struct mount *mp, *new_mp; uint64_t mounted_on_fileno; if (nd->nd_repstat) { nfsrv_postopattr(nd, getret, &at); goto out; } NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); off = fxdr_hyper(tl); toff = off; tl += 2; verf = fxdr_hyper(tl); tl += 2; siz = fxdr_unsigned(int, *tl++); cnt = fxdr_unsigned(int, *tl); /* * Use the server's maximum data transfer size as the upper bound * on reply datalen. */ if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) cnt = NFS_SRVMAXDATA(nd); /* * siz is a "hint" of how much directory information (name, fileid, * cookie) should be in the reply. At least one client "hints" 0, * so I set it to cnt for that case. I also round it up to the * next multiple of DIRBLKSIZ. */ if (siz <= 0) siz = cnt; siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); if (nd->nd_flag & ND_NFSV4) { error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); if (error) goto nfsmout; NFSSET_ATTRBIT(&savbits, &attrbits); NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); NFSZERO_ATTRBIT(&rderrbits); NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); } else { NFSZERO_ATTRBIT(&attrbits); } fullsiz = siz; nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); if (!nd->nd_repstat) { if (off && verf != at.na_filerev) { /* * va_filerev is not sufficient as a cookie verifier, * since it is not supposed to change when entries are * removed/added unless that offset cookies returned to * the client are no longer valid. */ #if 0 if (nd->nd_flag & ND_NFSV4) { nd->nd_repstat = NFSERR_NOTSAME; } else { nd->nd_repstat = NFSERR_BAD_COOKIE; } #endif } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { nd->nd_repstat = NFSERR_BAD_COOKIE; } } if (!nd->nd_repstat && vp->v_type != VDIR) nd->nd_repstat = NFSERR_NOTDIR; if (!nd->nd_repstat && cnt == 0) nd->nd_repstat = NFSERR_TOOSMALL; if (!nd->nd_repstat) nd->nd_repstat = nfsvno_accchk(vp, VEXEC, nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, NFSACCCHK_VPISLOCKED, NULL); if (nd->nd_repstat) { vput(vp); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); goto out; } is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0; MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); again: eofflag = 0; if (cookies) { free((caddr_t)cookies, M_TEMP); cookies = NULL; } iv.iov_base = rbuf; iv.iov_len = siz; io.uio_iov = &iv; io.uio_iovcnt = 1; io.uio_offset = (off_t)off; io.uio_resid = siz; io.uio_segflg = UIO_SYSSPACE; io.uio_rw = UIO_READ; io.uio_td = NULL; nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, &cookies); off = (u_int64_t)io.uio_offset; if (io.uio_resid) siz -= io.uio_resid; getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); if (!cookies && !nd->nd_repstat) nd->nd_repstat = NFSERR_PERM; if (!nd->nd_repstat) nd->nd_repstat = getret; if (nd->nd_repstat) { vput(vp); if (cookies) free((caddr_t)cookies, M_TEMP); free((caddr_t)rbuf, M_TEMP); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); goto out; } /* * If nothing read, return eof * rpc reply */ if (siz == 0) { vput(vp); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); txdr_hyper(at.na_filerev, tl); tl += 2; *tl++ = newnfs_false; *tl = newnfs_true; free((caddr_t)cookies, M_TEMP); free((caddr_t)rbuf, M_TEMP); goto out; } /* * Check for degenerate cases of nothing useful read. * If so go try again */ cpos = rbuf; cend = rbuf + siz; dp = (struct dirent *)cpos; cookiep = cookies; /* * For some reason FreeBSD's ufs_readdir() chooses to back the * directory offset up to a block boundary, so it is necessary to * skip over the records that precede the requested offset. This * requires the assumption that file offset cookies monotonically * increase. */ while (cpos < cend && ncookies > 0 && (dp->d_fileno == 0 || dp->d_type == DT_WHT || (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) || ((nd->nd_flag & ND_NFSV4) && ((dp->d_namlen == 1 && dp->d_name[0] == '.') || (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { cpos += dp->d_reclen; dp = (struct dirent *)cpos; cookiep++; ncookies--; } if (cpos >= cend || ncookies == 0) { siz = fullsiz; toff = off; goto again; } /* * Busy the file system so that the mount point won't go away * and, as such, VFS_VGET() can be used safely. */ mp = vp->v_mount; vfs_ref(mp); NFSVOPUNLOCK(vp, 0); nd->nd_repstat = vfs_busy(mp, 0); vfs_rel(mp); if (nd->nd_repstat != 0) { vrele(vp); free(cookies, M_TEMP); free(rbuf, M_TEMP); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); goto out; } /* * Check to see if entries in this directory can be safely acquired * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. * ZFS snapshot directories need VOP_LOOKUP(), so that any * automount of the snapshot directory that is required will * be done. * This needs to be done here for NFSv4, since NFSv4 never does * a VFS_VGET() for "." or "..". */ if (is_zfs == 1) { r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); if (r == EOPNOTSUPP) { usevget = 0; cn.cn_nameiop = LOOKUP; cn.cn_lkflags = LK_SHARED | LK_RETRY; cn.cn_cred = nd->nd_cred; cn.cn_thread = p; } else if (r == 0) vput(nvp); } /* * Save this position, in case there is an error before one entry * is created. */ mb0 = nd->nd_mb; bpos0 = nd->nd_bpos; /* * Fill in the first part of the reply. * dirlen is the reply length in bytes and cannot exceed cnt. * (Include the two booleans at the end of the reply in dirlen now, * so we recognize when we have exceeded cnt.) */ if (nd->nd_flag & ND_NFSV3) { dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; nfsrv_postopattr(nd, getret, &at); } else { dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; } NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); txdr_hyper(at.na_filerev, tl); /* * Save this position, in case there is an empty reply needed. */ mb1 = nd->nd_mb; bpos1 = nd->nd_bpos; /* Loop through the records and build reply */ entrycnt = 0; while (cpos < cend && ncookies > 0 && dirlen < cnt) { nlen = dp->d_namlen; if (dp->d_fileno != 0 && dp->d_type != DT_WHT && nlen <= NFS_MAXNAMLEN && ((nd->nd_flag & ND_NFSV3) || nlen > 2 || (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) || (nlen == 1 && dp->d_name[0] != '.'))) { /* * Save the current position in the reply, in case * this entry exceeds cnt. */ mb1 = nd->nd_mb; bpos1 = nd->nd_bpos; /* * For readdir_and_lookup get the vnode using * the file number. */ nvp = NULL; refp = NULL; r = 0; at_root = 0; needs_unbusy = 0; new_mp = mp; mounted_on_fileno = (uint64_t)dp->d_fileno; if ((nd->nd_flag & ND_NFSV3) || NFSNONZERO_ATTRBIT(&savbits)) { if (nd->nd_flag & ND_NFSV4) refp = nfsv4root_getreferral(NULL, vp, dp->d_fileno); if (refp == NULL) { if (usevget) r = VFS_VGET(mp, dp->d_fileno, LK_SHARED, &nvp); else r = EOPNOTSUPP; if (r == EOPNOTSUPP) { if (usevget) { usevget = 0; cn.cn_nameiop = LOOKUP; cn.cn_lkflags = LK_SHARED | LK_RETRY; cn.cn_cred = nd->nd_cred; cn.cn_thread = p; } cn.cn_nameptr = dp->d_name; cn.cn_namelen = nlen; cn.cn_flags = ISLASTCN | NOFOLLOW | LOCKLEAF; if (nlen == 2 && dp->d_name[0] == '.' && dp->d_name[1] == '.') cn.cn_flags |= ISDOTDOT; if (NFSVOPLOCK(vp, LK_SHARED) != 0) { nd->nd_repstat = EPERM; break; } if ((vp->v_vflag & VV_ROOT) != 0 && (cn.cn_flags & ISDOTDOT) != 0) { vref(vp); nvp = vp; r = 0; } else { r = VOP_LOOKUP(vp, &nvp, &cn); if (vp != nvp) NFSVOPUNLOCK(vp, 0); } } /* * For NFSv4, check to see if nvp is * a mount point and get the mount * point vnode, as required. */ if (r == 0 && nfsrv_enable_crossmntpt != 0 && (nd->nd_flag & ND_NFSV4) != 0 && nvp->v_type == VDIR && nvp->v_mountedhere != NULL) { new_mp = nvp->v_mountedhere; r = vfs_busy(new_mp, 0); vput(nvp); nvp = NULL; if (r == 0) { r = VFS_ROOT(new_mp, LK_SHARED, &nvp); needs_unbusy = 1; if (r == 0) at_root = 1; } } } if (!r) { if (refp == NULL && ((nd->nd_flag & ND_NFSV3) || NFSNONZERO_ATTRBIT(&attrbits))) { r = nfsvno_getfh(nvp, &nfh, p); if (!r) r = nfsvno_getattr(nvp, nvap, nd->nd_cred, p, 1); if (r == 0 && is_zfs == 1 && nfsrv_enable_crossmntpt != 0 && (nd->nd_flag & ND_NFSV4) != 0 && nvp->v_type == VDIR && vp->v_mount != nvp->v_mount) { /* * For a ZFS snapshot, there is a * pseudo mount that does not set * v_mountedhere, so it needs to * be detected via a different * mount structure. */ at_root = 1; if (new_mp == mp) new_mp = nvp->v_mount; } } } else { nvp = NULL; } if (r) { if (!NFSISSET_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR)) { if (nvp != NULL) vput(nvp); if (needs_unbusy != 0) vfs_unbusy(new_mp); nd->nd_repstat = r; break; } } } /* * Build the directory record xdr */ if (nd->nd_flag & ND_NFSV3) { NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); *tl++ = newnfs_true; *tl++ = 0; *tl = txdr_unsigned(dp->d_fileno); dirlen += nfsm_strtom(nd, dp->d_name, nlen); NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); *tl++ = 0; *tl = txdr_unsigned(*cookiep); nfsrv_postopattr(nd, 0, nvap); dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); if (nvp != NULL) vput(nvp); } else { NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); *tl++ = newnfs_true; *tl++ = 0; *tl = txdr_unsigned(*cookiep); dirlen += nfsm_strtom(nd, dp->d_name, nlen); if (nvp != NULL) { supports_nfsv4acls = nfs_supportsnfsv4acls(nvp); NFSVOPUNLOCK(nvp, 0); } else supports_nfsv4acls = 0; if (refp != NULL) { dirlen += nfsrv_putreferralattr(nd, &savbits, refp, 0, &nd->nd_repstat); if (nd->nd_repstat) { if (nvp != NULL) vrele(nvp); if (needs_unbusy != 0) vfs_unbusy(new_mp); break; } } else if (r) { dirlen += nfsvno_fillattr(nd, new_mp, nvp, nvap, &nfh, r, &rderrbits, nd->nd_cred, p, isdgram, 0, supports_nfsv4acls, at_root, mounted_on_fileno); } else { dirlen += nfsvno_fillattr(nd, new_mp, nvp, nvap, &nfh, r, &attrbits, nd->nd_cred, p, isdgram, 0, supports_nfsv4acls, at_root, mounted_on_fileno); } if (nvp != NULL) vrele(nvp); dirlen += (3 * NFSX_UNSIGNED); } if (needs_unbusy != 0) vfs_unbusy(new_mp); if (dirlen <= cnt) entrycnt++; } cpos += dp->d_reclen; dp = (struct dirent *)cpos; cookiep++; ncookies--; } vrele(vp); vfs_unbusy(mp); /* * If dirlen > cnt, we must strip off the last entry. If that * results in an empty reply, report NFSERR_TOOSMALL. */ if (dirlen > cnt || nd->nd_repstat) { if (!nd->nd_repstat && entrycnt == 0) nd->nd_repstat = NFSERR_TOOSMALL; if (nd->nd_repstat) { newnfs_trimtrailing(nd, mb0, bpos0); if (nd->nd_flag & ND_NFSV3) nfsrv_postopattr(nd, getret, &at); } else newnfs_trimtrailing(nd, mb1, bpos1); eofflag = 0; } else if (cpos < cend) eofflag = 0; if (!nd->nd_repstat) { NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); *tl++ = newnfs_false; if (eofflag) *tl = newnfs_true; else *tl = newnfs_false; } FREE((caddr_t)cookies, M_TEMP); FREE((caddr_t)rbuf, M_TEMP); out: NFSEXITCODE2(0, nd); return (0); nfsmout: vput(vp); NFSEXITCODE2(error, nd); return (error); } /* * Get the settable attributes out of the mbuf list. * (Return 0 or EBADRPC) */ int nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) { u_int32_t *tl; struct nfsv2_sattr *sp; int error = 0, toclient = 0; switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { case ND_NFSV2: NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); /* * Some old clients didn't fill in the high order 16bits. * --> check the low order 2 bytes for 0xffff */ if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) nvap->na_mode = nfstov_mode(sp->sa_mode); if (sp->sa_uid != newnfs_xdrneg1) nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); if (sp->sa_gid != newnfs_xdrneg1) nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); if (sp->sa_size != newnfs_xdrneg1) nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { #ifdef notyet fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); #else nvap->na_atime.tv_sec = fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); nvap->na_atime.tv_nsec = 0; #endif } if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); break; case ND_NFSV3: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (*tl == newnfs_true) { NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); nvap->na_mode = nfstov_mode(*tl); } NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (*tl == newnfs_true) { NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); nvap->na_uid = fxdr_unsigned(uid_t, *tl); } NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (*tl == newnfs_true) { NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); nvap->na_gid = fxdr_unsigned(gid_t, *tl); } NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (*tl == newnfs_true) { NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); nvap->na_size = fxdr_hyper(tl); } NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); switch (fxdr_unsigned(int, *tl)) { case NFSV3SATTRTIME_TOCLIENT: NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); fxdr_nfsv3time(tl, &nvap->na_atime); toclient = 1; break; case NFSV3SATTRTIME_TOSERVER: vfs_timestamp(&nvap->na_atime); nvap->na_vaflags |= VA_UTIMES_NULL; break; }; NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); switch (fxdr_unsigned(int, *tl)) { case NFSV3SATTRTIME_TOCLIENT: NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); fxdr_nfsv3time(tl, &nvap->na_mtime); nvap->na_vaflags &= ~VA_UTIMES_NULL; break; case NFSV3SATTRTIME_TOSERVER: vfs_timestamp(&nvap->na_mtime); if (!toclient) nvap->na_vaflags |= VA_UTIMES_NULL; break; }; break; case ND_NFSV4: error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p); }; nfsmout: NFSEXITCODE2(error, nd); return (error); } /* * Handle the setable attributes for V4. * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. */ int nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) { u_int32_t *tl; int attrsum = 0; int i, j; int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; int toclient = 0; u_char *cp, namestr[NFSV4_SMALLSTR + 1]; uid_t uid; gid_t gid; error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); if (error) goto nfsmout; NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); attrsize = fxdr_unsigned(int, *tl); /* * Loop around getting the setable attributes. If an unsupported * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. */ if (retnotsup) { nd->nd_repstat = NFSERR_ATTRNOTSUPP; bitpos = NFSATTRBIT_MAX; } else { bitpos = 0; } for (; bitpos < NFSATTRBIT_MAX; bitpos++) { if (attrsum > attrsize) { error = NFSERR_BADXDR; goto nfsmout; } if (NFSISSET_ATTRBIT(attrbitp, bitpos)) switch (bitpos) { case NFSATTRBIT_SIZE: NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); if (vp != NULL && vp->v_type != VREG) { error = (vp->v_type == VDIR) ? NFSERR_ISDIR : NFSERR_INVAL; goto nfsmout; } nvap->na_size = fxdr_hyper(tl); attrsum += NFSX_HYPER; break; case NFSATTRBIT_ACL: error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, p); if (error) goto nfsmout; if (aceerr && !nd->nd_repstat) nd->nd_repstat = aceerr; attrsum += aclsize; break; case NFSATTRBIT_ARCHIVE: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += NFSX_UNSIGNED; break; case NFSATTRBIT_HIDDEN: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += NFSX_UNSIGNED; break; case NFSATTRBIT_MIMETYPE: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); i = fxdr_unsigned(int, *tl); error = nfsm_advance(nd, NFSM_RNDUP(i), -1); if (error) goto nfsmout; if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); break; case NFSATTRBIT_MODE: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); nvap->na_mode = nfstov_mode(*tl); attrsum += NFSX_UNSIGNED; break; case NFSATTRBIT_OWNER: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); j = fxdr_unsigned(int, *tl); if (j < 0) { error = NFSERR_BADXDR; goto nfsmout; } if (j > NFSV4_SMALLSTR) cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); else cp = namestr; error = nfsrv_mtostr(nd, cp, j); if (error) { if (j > NFSV4_SMALLSTR) free(cp, M_NFSSTRING); goto nfsmout; } if (!nd->nd_repstat) { nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid, p); if (!nd->nd_repstat) nvap->na_uid = uid; } if (j > NFSV4_SMALLSTR) free(cp, M_NFSSTRING); attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); break; case NFSATTRBIT_OWNERGROUP: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); j = fxdr_unsigned(int, *tl); if (j < 0) { error = NFSERR_BADXDR; goto nfsmout; } if (j > NFSV4_SMALLSTR) cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); else cp = namestr; error = nfsrv_mtostr(nd, cp, j); if (error) { if (j > NFSV4_SMALLSTR) free(cp, M_NFSSTRING); goto nfsmout; } if (!nd->nd_repstat) { nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid, p); if (!nd->nd_repstat) nvap->na_gid = gid; } if (j > NFSV4_SMALLSTR) free(cp, M_NFSSTRING); attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); break; case NFSATTRBIT_SYSTEM: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += NFSX_UNSIGNED; break; case NFSATTRBIT_TIMEACCESSSET: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); attrsum += NFSX_UNSIGNED; if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); fxdr_nfsv4time(tl, &nvap->na_atime); toclient = 1; attrsum += NFSX_V4TIME; } else { vfs_timestamp(&nvap->na_atime); nvap->na_vaflags |= VA_UTIMES_NULL; } break; case NFSATTRBIT_TIMEBACKUP: NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += NFSX_V4TIME; break; case NFSATTRBIT_TIMECREATE: NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); if (!nd->nd_repstat) nd->nd_repstat = NFSERR_ATTRNOTSUPP; attrsum += NFSX_V4TIME; break; case NFSATTRBIT_TIMEMODIFYSET: NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); attrsum += NFSX_UNSIGNED; if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); fxdr_nfsv4time(tl, &nvap->na_mtime); nvap->na_vaflags &= ~VA_UTIMES_NULL; attrsum += NFSX_V4TIME; } else { vfs_timestamp(&nvap->na_mtime); if (!toclient) nvap->na_vaflags |= VA_UTIMES_NULL; } break; default: nd->nd_repstat = NFSERR_ATTRNOTSUPP; /* * set bitpos so we drop out of the loop. */ bitpos = NFSATTRBIT_MAX; break; }; } /* * some clients pad the attrlist, so we need to skip over the * padding. */ if (attrsum > attrsize) { error = NFSERR_BADXDR; } else { attrsize = NFSM_RNDUP(attrsize); if (attrsum < attrsize) error = nfsm_advance(nd, attrsize - attrsum, -1); } nfsmout: NFSEXITCODE2(error, nd); return (error); } /* * Check/setup export credentials. */ int nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, struct ucred *credanon) { int error = 0; /* * Check/setup credentials. */ if (nd->nd_flag & ND_GSS) exp->nes_exflag &= ~MNT_EXPORTANON; /* * Check to see if the operation is allowed for this security flavor. * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. * Also, allow Secinfo, so that it can acquire the correct flavor(s). */ if (nfsvno_testexp(nd, exp) && nd->nd_procnum != NFSV4OP_SECINFO && nd->nd_procnum != NFSPROC_FSINFO) { if (nd->nd_flag & ND_NFSV4) error = NFSERR_WRONGSEC; else error = (NFSERR_AUTHERR | AUTH_TOOWEAK); goto out; } /* * Check to see if the file system is exported V4 only. */ if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { error = NFSERR_PROGNOTV4; goto out; } /* * Now, map the user credentials. * (Note that ND_AUTHNONE will only be set for an NFSv3 * Fsinfo RPC. If set for anything else, this code might need * to change.) */ if (NFSVNO_EXPORTED(exp) && ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || NFSVNO_EXPORTANON(exp) || (nd->nd_flag & ND_AUTHNONE))) { nd->nd_cred->cr_uid = credanon->cr_uid; nd->nd_cred->cr_gid = credanon->cr_gid; crsetgroups(nd->nd_cred, credanon->cr_ngroups, credanon->cr_groups); } out: NFSEXITCODE2(error, nd); return (error); } /* * Check exports. */ int nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, struct ucred **credp) { int i, error, *secflavors; error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, &exp->nes_numsecflavor, &secflavors); if (error) { if (nfs_rootfhset) { exp->nes_exflag = 0; exp->nes_numsecflavor = 0; error = 0; } } else { /* Copy the security flavors. */ for (i = 0; i < exp->nes_numsecflavor; i++) exp->nes_secflavors[i] = secflavors[i]; } NFSEXITCODE(error); return (error); } /* * Get a vnode for a file handle and export stuff. */ int nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, int lktype, struct vnode **vpp, struct nfsexstuff *exp, struct ucred **credp) { int i, error, *secflavors; *credp = NULL; exp->nes_numsecflavor = 0; error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); if (error != 0) /* Make sure the server replies ESTALE to the client. */ error = ESTALE; if (nam && !error) { error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, &exp->nes_numsecflavor, &secflavors); if (error) { if (nfs_rootfhset) { exp->nes_exflag = 0; exp->nes_numsecflavor = 0; error = 0; } else { vput(*vpp); } } else { /* Copy the security flavors. */ for (i = 0; i < exp->nes_numsecflavor; i++) exp->nes_secflavors[i] = secflavors[i]; } } NFSEXITCODE(error); return (error); } /* * nfsd_fhtovp() - convert a fh to a vnode ptr * - look up fsid in mount list (if not found ret error) * - get vp and export rights by calling nfsvno_fhtovp() * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon * for AUTH_SYS * - if mpp != NULL, return the mount point so that it can * be used for vn_finished_write() by the caller */ void nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, struct vnode **vpp, struct nfsexstuff *exp, struct mount **mpp, int startwrite, struct thread *p) { struct mount *mp; struct ucred *credanon; fhandle_t *fhp; fhp = (fhandle_t *)nfp->nfsrvfh_data; /* * Check for the special case of the nfsv4root_fh. */ mp = vfs_busyfs(&fhp->fh_fsid); if (mpp != NULL) *mpp = mp; if (mp == NULL) { *vpp = NULL; nd->nd_repstat = ESTALE; goto out; } if (startwrite) { vn_start_write(NULL, mpp, V_WAIT); if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) lktype = LK_EXCLUSIVE; } nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, &credanon); vfs_unbusy(mp); /* * For NFSv4 without a pseudo root fs, unexported file handles * can be returned, so that Lookup works everywhere. */ if (!nd->nd_repstat && exp->nes_exflag == 0 && !(nd->nd_flag & ND_NFSV4)) { vput(*vpp); nd->nd_repstat = EACCES; } /* * Personally, I've never seen any point in requiring a * reserved port#, since only in the rare case where the * clients are all boxes with secure system priviledges, * does it provide any enhanced security, but... some people * believe it to be useful and keep putting this code back in. * (There is also some "security checker" out there that * complains if the nfs server doesn't enforce this.) * However, note the following: * RFC3530 (NFSv4) specifies that a reserved port# not be * required. * RFC2623 recommends that, if a reserved port# is checked for, * that there be a way to turn that off--> ifdef'd. */ #ifdef NFS_REQRSVPORT if (!nd->nd_repstat) { struct sockaddr_in *saddr; struct sockaddr_in6 *saddr6; saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); if (!(nd->nd_flag & ND_NFSV4) && ((saddr->sin_family == AF_INET && ntohs(saddr->sin_port) >= IPPORT_RESERVED) || (saddr6->sin6_family == AF_INET6 && ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { vput(*vpp); nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); } } #endif /* NFS_REQRSVPORT */ /* * Check/setup credentials. */ if (!nd->nd_repstat) { nd->nd_saveduid = nd->nd_cred->cr_uid; nd->nd_repstat = nfsd_excred(nd, exp, credanon); if (nd->nd_repstat) vput(*vpp); } if (credanon != NULL) crfree(credanon); if (nd->nd_repstat) { if (startwrite) vn_finished_write(mp); *vpp = NULL; if (mpp != NULL) *mpp = NULL; } out: NFSEXITCODE2(0, nd); } /* * glue for fp. */ static int fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) { struct filedesc *fdp; struct file *fp; int error = 0; fdp = p->td_proc->p_fd; if (fd < 0 || fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { error = EBADF; goto out; } *fpp = fp; out: NFSEXITCODE(error); return (error); } /* * Called from nfssvc() to update the exports list. Just call * vfs_export(). This has to be done, since the v4 root fake fs isn't * in the mount list. */ int nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) { struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; int error = 0; struct nameidata nd; fhandle_t fh; error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) nfs_rootfhset = 0; else if (error == 0) { if (nfsexargp->fspec == NULL) { error = EPERM; goto out; } /* * If fspec != NULL, this is the v4root path. */ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, nfsexargp->fspec, p); if ((error = namei(&nd)) != 0) goto out; error = nfsvno_getfh(nd.ni_vp, &fh, p); vrele(nd.ni_vp); if (!error) { nfs_rootfh.nfsrvfh_len = NFSX_MYFH; NFSBCOPY((caddr_t)&fh, nfs_rootfh.nfsrvfh_data, sizeof (fhandle_t)); nfs_rootfhset = 1; } } out: NFSEXITCODE(error); return (error); } /* * This function needs to test to see if the system is near its limit * for memory allocation via malloc() or mget() and return True iff * either of these resources are near their limit. * XXX (For now, this is just a stub.) */ int nfsrv_testmalloclimit = 0; int nfsrv_mallocmget_limit(void) { static int printmesg = 0; static int testval = 1; if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { if ((printmesg++ % 100) == 0) printf("nfsd: malloc/mget near limit\n"); return (1); } return (0); } /* * BSD specific initialization of a mount point. */ void nfsd_mntinit(void) { static int inited = 0; if (inited) return; inited = 1; nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist); nfsv4root_mnt.mnt_export = NULL; TAILQ_INIT(&nfsv4root_opt); TAILQ_INIT(&nfsv4root_newopt); nfsv4root_mnt.mnt_opt = &nfsv4root_opt; nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; nfsv4root_mnt.mnt_nvnodelistsize = 0; nfsv4root_mnt.mnt_activevnodelistsize = 0; } /* * Get a vnode for a file handle, without checking exports, etc. */ struct vnode * nfsvno_getvp(fhandle_t *fhp) { struct mount *mp; struct vnode *vp; int error; mp = vfs_busyfs(&fhp->fh_fsid); if (mp == NULL) return (NULL); error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); vfs_unbusy(mp); if (error) return (NULL); return (vp); } /* * Do a local VOP_ADVLOCK(). */ int nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, u_int64_t end, struct thread *td) { int error = 0; struct flock fl; u_int64_t tlen; if (nfsrv_dolocallocks == 0) goto out; ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked"); fl.l_whence = SEEK_SET; fl.l_type = ftype; fl.l_start = (off_t)first; if (end == NFS64BITSSET) { fl.l_len = 0; } else { tlen = end - first; fl.l_len = (off_t)tlen; } /* * For FreeBSD8, the l_pid and l_sysid must be set to the same * values for all calls, so that all locks will be held by the * nfsd server. (The nfsd server handles conflicts between the * various clients.) * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 * bytes, so it can't be put in l_sysid. */ if (nfsv4_sysid == 0) nfsv4_sysid = nlm_acquire_next_sysid(); fl.l_pid = (pid_t)0; fl.l_sysid = (int)nfsv4_sysid; if (ftype == F_UNLCK) error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, (F_POSIX | F_REMOTE)); else error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, (F_POSIX | F_REMOTE)); out: NFSEXITCODE(error); return (error); } /* * Check the nfsv4 root exports. */ int nfsvno_v4rootexport(struct nfsrv_descript *nd) { struct ucred *credanon; int exflags, error = 0, numsecflavor, *secflavors, i; error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, &credanon, &numsecflavor, &secflavors); if (error) { error = NFSERR_PROGUNAVAIL; goto out; } if (credanon != NULL) crfree(credanon); for (i = 0; i < numsecflavor; i++) { if (secflavors[i] == AUTH_SYS) nd->nd_flag |= ND_EXAUTHSYS; else if (secflavors[i] == RPCSEC_GSS_KRB5) nd->nd_flag |= ND_EXGSS; else if (secflavors[i] == RPCSEC_GSS_KRB5I) nd->nd_flag |= ND_EXGSSINTEGRITY; else if (secflavors[i] == RPCSEC_GSS_KRB5P) nd->nd_flag |= ND_EXGSSPRIVACY; } out: NFSEXITCODE(error); return (error); } /* * Nfs server psuedo system call for the nfsd's */ /* * MPSAFE */ static int nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) { struct file *fp; struct nfsd_addsock_args sockarg; struct nfsd_nfsd_args nfsdarg; cap_rights_t rights; int error; if (uap->flag & NFSSVC_NFSDADDSOCK) { error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); if (error) goto out; /* * Since we don't know what rights might be required, * pretend that we need them all. It is better to be too * careful than too reckless. */ error = fget(td, sockarg.sock, cap_rights_init(&rights, CAP_SOCK_SERVER), &fp); if (error != 0) goto out; if (fp->f_type != DTYPE_SOCKET) { fdrop(fp, td); error = EPERM; goto out; } error = nfsrvd_addsock(fp); fdrop(fp, td); } else if (uap->flag & NFSSVC_NFSDNFSD) { if (uap->argp == NULL) { error = EINVAL; goto out; } error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof (nfsdarg)); if (error) goto out; error = nfsrvd_nfsd(td, &nfsdarg); } else { error = nfssvc_srvcall(td, uap, td->td_ucred); } out: NFSEXITCODE(error); return (error); } static int nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) { struct nfsex_args export; struct file *fp = NULL; int stablefd, len; struct nfsd_clid adminrevoke; struct nfsd_dumplist dumplist; struct nfsd_dumpclients *dumpclients; struct nfsd_dumplocklist dumplocklist; struct nfsd_dumplocks *dumplocks; struct nameidata nd; vnode_t vp; int error = EINVAL, igotlock; struct proc *procp; static int suspend_nfsd = 0; if (uap->flag & NFSSVC_PUBLICFH) { NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); error = copyin(uap->argp, &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); if (!error) nfs_pubfhset = 1; } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { error = copyin(uap->argp,(caddr_t)&export, sizeof (struct nfsex_args)); if (!error) error = nfsrv_v4rootexport(&export, cred, p); } else if (uap->flag & NFSSVC_NOPUBLICFH) { nfs_pubfhset = 0; error = 0; } else if (uap->flag & NFSSVC_STABLERESTART) { error = copyin(uap->argp, (caddr_t)&stablefd, sizeof (int)); if (!error) error = fp_getfvp(p, stablefd, &fp, &vp); if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) error = EBADF; if (!error && newnfs_numnfsd != 0) error = EPERM; if (!error) { nfsrv_stablefirst.nsf_fp = fp; nfsrv_setupstable(p); } } else if (uap->flag & NFSSVC_ADMINREVOKE) { error = copyin(uap->argp, (caddr_t)&adminrevoke, sizeof (struct nfsd_clid)); if (!error) error = nfsrv_adminrevoke(&adminrevoke, p); } else if (uap->flag & NFSSVC_DUMPCLIENTS) { error = copyin(uap->argp, (caddr_t)&dumplist, sizeof (struct nfsd_dumplist)); if (!error && (dumplist.ndl_size < 1 || dumplist.ndl_size > NFSRV_MAXDUMPLIST)) error = EPERM; if (!error) { len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; dumpclients = (struct nfsd_dumpclients *)malloc(len, M_TEMP, M_WAITOK); nfsrv_dumpclients(dumpclients, dumplist.ndl_size); error = copyout(dumpclients, CAST_USER_ADDR_T(dumplist.ndl_list), len); free((caddr_t)dumpclients, M_TEMP); } } else if (uap->flag & NFSSVC_DUMPLOCKS) { error = copyin(uap->argp, (caddr_t)&dumplocklist, sizeof (struct nfsd_dumplocklist)); if (!error && (dumplocklist.ndllck_size < 1 || dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) error = EPERM; if (!error) error = nfsrv_lookupfilename(&nd, dumplocklist.ndllck_fname, p); if (!error) { len = sizeof (struct nfsd_dumplocks) * dumplocklist.ndllck_size; dumplocks = (struct nfsd_dumplocks *)malloc(len, M_TEMP, M_WAITOK); nfsrv_dumplocks(nd.ni_vp, dumplocks, dumplocklist.ndllck_size, p); vput(nd.ni_vp); error = copyout(dumplocks, CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); free((caddr_t)dumplocks, M_TEMP); } } else if (uap->flag & NFSSVC_BACKUPSTABLE) { procp = p->td_proc; PROC_LOCK(procp); nfsd_master_pid = procp->p_pid; bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); nfsd_master_start = procp->p_stats->p_start; nfsd_master_proc = procp; PROC_UNLOCK(procp); } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { NFSLOCKV4ROOTMUTEX(); if (suspend_nfsd == 0) { /* Lock out all nfsd threads */ do { igotlock = nfsv4_lock(&nfsd_suspend_lock, 1, NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); } while (igotlock == 0 && suspend_nfsd == 0); suspend_nfsd = 1; } NFSUNLOCKV4ROOTMUTEX(); error = 0; } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { NFSLOCKV4ROOTMUTEX(); if (suspend_nfsd != 0) { nfsv4_unlock(&nfsd_suspend_lock, 0); suspend_nfsd = 0; } NFSUNLOCKV4ROOTMUTEX(); error = 0; } NFSEXITCODE(error); return (error); } /* * Check exports. * Returns 0 if ok, 1 otherwise. */ int nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) { int i; /* * This seems odd, but allow the case where the security flavor * list is empty. This happens when NFSv4 is traversing non-exported * file systems. Exported file systems should always have a non-empty * security flavor list. */ if (exp->nes_numsecflavor == 0) return (0); for (i = 0; i < exp->nes_numsecflavor; i++) { /* * The tests for privacy and integrity must be first, * since ND_GSS is set for everything but AUTH_SYS. */ if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && (nd->nd_flag & ND_GSSPRIVACY)) return (0); if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && (nd->nd_flag & ND_GSSINTEGRITY)) return (0); if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && (nd->nd_flag & ND_GSS)) return (0); if (exp->nes_secflavors[i] == AUTH_SYS && (nd->nd_flag & ND_GSS) == 0) return (0); } return (1); } /* * Calculate a hash value for the fid in a file handle. */ uint32_t nfsrv_hashfh(fhandle_t *fhp) { uint32_t hashval; hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); return (hashval); } /* * Calculate a hash value for the sessionid. */ uint32_t nfsrv_hashsessionid(uint8_t *sessionid) { uint32_t hashval; hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); return (hashval); } /* * Signal the userland master nfsd to backup the stable restart file. */ void nfsrv_backupstable(void) { struct proc *procp; if (nfsd_master_proc != NULL) { procp = pfind(nfsd_master_pid); /* Try to make sure it is the correct process. */ if (procp == nfsd_master_proc && procp->p_stats->p_start.tv_sec == nfsd_master_start.tv_sec && procp->p_stats->p_start.tv_usec == nfsd_master_start.tv_usec && strcmp(procp->p_comm, nfsd_master_comm) == 0) kern_psignal(procp, SIGUSR2); else nfsd_master_proc = NULL; if (procp != NULL) PROC_UNLOCK(procp); } } extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); /* * Called once to initialize data structures... */ static int nfsd_modevent(module_t mod, int type, void *data) { int error = 0, i; static int loaded = 0; switch (type) { case MOD_LOAD: if (loaded) goto out; newnfs_portinit(); for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { mtx_init(&nfsrchash_table[i].mtx, "nfsrtc", NULL, MTX_DEF); mtx_init(&nfsrcahash_table[i].mtx, "nfsrtca", NULL, MTX_DEF); } mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); mtx_init(&nfsv4root_mnt.mnt_mtx, "nfs4mnt", NULL, MTX_DEF); for (i = 0; i < NFSSESSIONHASHSIZE; i++) mtx_init(&nfssessionhash[i].mtx, "nfssm", NULL, MTX_DEF); lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); nfsrvd_initcache(); nfsd_init(); NFSD_LOCK(); nfsrvd_init(0); NFSD_UNLOCK(); nfsd_mntinit(); #ifdef VV_DISABLEDELEG vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; #endif nfsd_call_servertimer = nfsrv_servertimer; nfsd_call_nfsd = nfssvc_nfsd; loaded = 1; break; case MOD_UNLOAD: if (newnfs_numnfsd != 0) { error = EBUSY; break; } #ifdef VV_DISABLEDELEG vn_deleg_ops.vndeleg_recall = NULL; vn_deleg_ops.vndeleg_disable = NULL; #endif nfsd_call_servertimer = NULL; nfsd_call_nfsd = NULL; /* Clean out all NFSv4 state. */ nfsrv_throwawayallstate(curthread); /* Clean the NFS server reply cache */ nfsrvd_cleancache(); /* Free up the krpc server pool. */ if (nfsrvd_pool != NULL) svcpool_destroy(nfsrvd_pool); /* and get rid of the locks */ for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { mtx_destroy(&nfsrchash_table[i].mtx); mtx_destroy(&nfsrcahash_table[i].mtx); } mtx_destroy(&nfsrc_udpmtx); mtx_destroy(&nfs_v4root_mutex); mtx_destroy(&nfsv4root_mnt.mnt_mtx); for (i = 0; i < NFSSESSIONHASHSIZE; i++) mtx_destroy(&nfssessionhash[i].mtx); lockdestroy(&nfsv4root_mnt.mnt_explock); loaded = 0; break; default: error = EOPNOTSUPP; break; } out: NFSEXITCODE(error); return (error); } static moduledata_t nfsd_mod = { "nfsd", nfsd_modevent, NULL, }; DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); /* So that loader and kldload(2) can find us, wherever we are.. */ MODULE_VERSION(nfsd, 1); MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); MODULE_DEPEND(nfsd, nfslock, 1, 1, 1); MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); MODULE_DEPEND(nfsd, krpc, 1, 1, 1); MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1);