diff options
Diffstat (limited to 'freebsd/sys/fs/nfs/nfs_commonport.c')
| -rw-r--r-- | freebsd/sys/fs/nfs/nfs_commonport.c | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/freebsd/sys/fs/nfs/nfs_commonport.c b/freebsd/sys/fs/nfs/nfs_commonport.c new file mode 100644 index 00000000..1a1e64cd --- /dev/null +++ b/freebsd/sys/fs/nfs/nfs_commonport.c @@ -0,0 +1,819 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * 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. + * 3. 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 <sys/cdefs.h> +__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 <fs/nfs/nfsport.h> +#include <sys/smp.h> +#include <sys/sysctl.h> +#include <sys/taskqueue.h> +#include <rpc/rpc_com.h> +#include <vm/vm.h> +#include <vm/vm_object.h> +#include <vm/vm_page.h> +#include <vm/vm_param.h> +#include <vm/vm_map.h> +#include <vm/vm_kern.h> +#include <vm/vm_extern.h> +#include <vm/uma.h> + +extern int nfscl_ticks; +extern nfsuserd_state 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 nfsstatsv1 nfsstatsv1; +int nfs_numnfscbd = 0; +int nfscl_debuglevel = 0; +char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; +struct callout newnfsd_callout; +int nfsrv_lughashsize = 100; +struct mtx nfsrv_dslock_mtx; +struct nfsdevicehead nfsrv_devidhead; +volatile int nfsrv_devidcnt = 0; +void (*nfsd_call_servertimer)(void) = NULL; +void (*ncl_call_invalcaches)(struct vnode *) = NULL; + +int nfs_pnfsio(task_fn_t *, void *); + +static int nfs_realign_test; +static int nfs_realign_count; +static struct ext_nfsstats oldnfsstats; + +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 NFS client"); +SYSCTL_INT(_vfs_nfs, OID_AUTO, userhashsize, CTLFLAG_RDTUN, &nfsrv_lughashsize, + 0, "Size of hash tables for uid/name mapping"); +int nfs_pnfsiothreads = -1; +SYSCTL_INT(_vfs_nfs, OID_AUTO, pnfsiothreads, CTLFLAG_RW, &nfs_pnfsiothreads, + 0, "Number of pNFS mirror I/O threads"); + +/* + * 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", "NFS vnode"); +MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer"); +MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", + "NFS directory offset data"); +MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD 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; +struct mtx nfs_clstate_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 occasionally 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, long *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 = NFS_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, uint64_t *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, i, j; + struct nfsd_idargs nid; + struct nfsd_oidargs onid; + struct { + int vers; /* Just the first field of nfsstats. */ + } nfsstatver; + + if (uap->flag & NFSSVC_IDNAME) { + if ((uap->flag & NFSSVC_NEWSTRUCT) != 0) + error = copyin(uap->argp, &nid, sizeof(nid)); + else { + error = copyin(uap->argp, &onid, sizeof(onid)); + if (error == 0) { + nid.nid_flag = onid.nid_flag; + nid.nid_uid = onid.nid_uid; + nid.nid_gid = onid.nid_gid; + nid.nid_usermax = onid.nid_usermax; + nid.nid_usertimeout = onid.nid_usertimeout; + nid.nid_name = onid.nid_name; + nid.nid_namelen = onid.nid_namelen; + nid.nid_ngroup = 0; + nid.nid_grps = NULL; + } + } + if (error) + goto out; + error = nfssvc_idname(&nid); + goto out; + } else if (uap->flag & NFSSVC_GETSTATS) { + if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { + /* Copy fields to the old ext_nfsstat structure. */ + oldnfsstats.attrcache_hits = + nfsstatsv1.attrcache_hits; + oldnfsstats.attrcache_misses = + nfsstatsv1.attrcache_misses; + oldnfsstats.lookupcache_hits = + nfsstatsv1.lookupcache_hits; + oldnfsstats.lookupcache_misses = + nfsstatsv1.lookupcache_misses; + oldnfsstats.direofcache_hits = + nfsstatsv1.direofcache_hits; + oldnfsstats.direofcache_misses = + nfsstatsv1.direofcache_misses; + oldnfsstats.accesscache_hits = + nfsstatsv1.accesscache_hits; + oldnfsstats.accesscache_misses = + nfsstatsv1.accesscache_misses; + oldnfsstats.biocache_reads = + nfsstatsv1.biocache_reads; + oldnfsstats.read_bios = + nfsstatsv1.read_bios; + oldnfsstats.read_physios = + nfsstatsv1.read_physios; + oldnfsstats.biocache_writes = + nfsstatsv1.biocache_writes; + oldnfsstats.write_bios = + nfsstatsv1.write_bios; + oldnfsstats.write_physios = + nfsstatsv1.write_physios; + oldnfsstats.biocache_readlinks = + nfsstatsv1.biocache_readlinks; + oldnfsstats.readlink_bios = + nfsstatsv1.readlink_bios; + oldnfsstats.biocache_readdirs = + nfsstatsv1.biocache_readdirs; + oldnfsstats.readdir_bios = + nfsstatsv1.readdir_bios; + for (i = 0; i < NFSV4_NPROCS; i++) + oldnfsstats.rpccnt[i] = nfsstatsv1.rpccnt[i]; + oldnfsstats.rpcretries = nfsstatsv1.rpcretries; + for (i = 0; i < NFSV4OP_NOPS; i++) + oldnfsstats.srvrpccnt[i] = + nfsstatsv1.srvrpccnt[i]; + for (i = NFSV42_NOPS, j = NFSV4OP_NOPS; + i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++) + oldnfsstats.srvrpccnt[j] = + nfsstatsv1.srvrpccnt[i]; + oldnfsstats.srvrpc_errs = nfsstatsv1.srvrpc_errs; + oldnfsstats.srv_errs = nfsstatsv1.srv_errs; + oldnfsstats.rpcrequests = nfsstatsv1.rpcrequests; + oldnfsstats.rpctimeouts = nfsstatsv1.rpctimeouts; + oldnfsstats.rpcunexpected = nfsstatsv1.rpcunexpected; + oldnfsstats.rpcinvalid = nfsstatsv1.rpcinvalid; + oldnfsstats.srvcache_inproghits = + nfsstatsv1.srvcache_inproghits; + oldnfsstats.srvcache_idemdonehits = + nfsstatsv1.srvcache_idemdonehits; + oldnfsstats.srvcache_nonidemdonehits = + nfsstatsv1.srvcache_nonidemdonehits; + oldnfsstats.srvcache_misses = + nfsstatsv1.srvcache_misses; + oldnfsstats.srvcache_tcppeak = + nfsstatsv1.srvcache_tcppeak; + oldnfsstats.srvcache_size = nfsstatsv1.srvcache_size; + oldnfsstats.srvclients = nfsstatsv1.srvclients; + oldnfsstats.srvopenowners = nfsstatsv1.srvopenowners; + oldnfsstats.srvopens = nfsstatsv1.srvopens; + oldnfsstats.srvlockowners = nfsstatsv1.srvlockowners; + oldnfsstats.srvlocks = nfsstatsv1.srvlocks; + oldnfsstats.srvdelegates = nfsstatsv1.srvdelegates; + for (i = 0; i < NFSV4OP_CBNOPS; i++) + oldnfsstats.cbrpccnt[i] = + nfsstatsv1.cbrpccnt[i]; + oldnfsstats.clopenowners = nfsstatsv1.clopenowners; + oldnfsstats.clopens = nfsstatsv1.clopens; + oldnfsstats.cllockowners = nfsstatsv1.cllockowners; + oldnfsstats.cllocks = nfsstatsv1.cllocks; + oldnfsstats.cldelegates = nfsstatsv1.cldelegates; + oldnfsstats.cllocalopenowners = + nfsstatsv1.cllocalopenowners; + oldnfsstats.cllocalopens = nfsstatsv1.cllocalopens; + oldnfsstats.cllocallockowners = + nfsstatsv1.cllocallockowners; + oldnfsstats.cllocallocks = nfsstatsv1.cllocallocks; + error = copyout(&oldnfsstats, uap->argp, + sizeof (oldnfsstats)); + } else { + error = copyin(uap->argp, &nfsstatver, + sizeof(nfsstatver)); + if (error == 0 && nfsstatver.vers != NFSSTATS_V1) + error = EPERM; + if (error == 0) + error = copyout(&nfsstatsv1, uap->argp, + sizeof (nfsstatsv1)); + } + if (error == 0) { + if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { + nfsstatsv1.attrcache_hits = 0; + nfsstatsv1.attrcache_misses = 0; + nfsstatsv1.lookupcache_hits = 0; + nfsstatsv1.lookupcache_misses = 0; + nfsstatsv1.direofcache_hits = 0; + nfsstatsv1.direofcache_misses = 0; + nfsstatsv1.accesscache_hits = 0; + nfsstatsv1.accesscache_misses = 0; + nfsstatsv1.biocache_reads = 0; + nfsstatsv1.read_bios = 0; + nfsstatsv1.read_physios = 0; + nfsstatsv1.biocache_writes = 0; + nfsstatsv1.write_bios = 0; + nfsstatsv1.write_physios = 0; + nfsstatsv1.biocache_readlinks = 0; + nfsstatsv1.readlink_bios = 0; + nfsstatsv1.biocache_readdirs = 0; + nfsstatsv1.readdir_bios = 0; + nfsstatsv1.rpcretries = 0; + nfsstatsv1.rpcrequests = 0; + nfsstatsv1.rpctimeouts = 0; + nfsstatsv1.rpcunexpected = 0; + nfsstatsv1.rpcinvalid = 0; + bzero(nfsstatsv1.rpccnt, + sizeof(nfsstatsv1.rpccnt)); + } + if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { + nfsstatsv1.srvrpc_errs = 0; + nfsstatsv1.srv_errs = 0; + nfsstatsv1.srvcache_inproghits = 0; + nfsstatsv1.srvcache_idemdonehits = 0; + nfsstatsv1.srvcache_nonidemdonehits = 0; + nfsstatsv1.srvcache_misses = 0; + nfsstatsv1.srvcache_tcppeak = 0; + bzero(nfsstatsv1.srvrpccnt, + sizeof(nfsstatsv1.srvrpccnt)); + bzero(nfsstatsv1.cbrpccnt, + sizeof(nfsstatsv1.cbrpccnt)); + } + } + goto out; + } else if (uap->flag & NFSSVC_NFSUSERDPORT) { + u_short sockport; + struct nfsuserd_args nargs; + + if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { + error = copyin(uap->argp, (caddr_t)&sockport, + sizeof (u_short)); + if (error == 0) { + nargs.nuserd_family = AF_INET; + nargs.nuserd_port = sockport; + } + } else { + /* + * New nfsuserd_args structure, which indicates + * which IP version to use along with the port#. + */ + error = copyin(uap->argp, &nargs, sizeof(nargs)); + } + if (!error) + error = nfsrv_nfsuserdport(&nargs, 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); + mtx_init(&nfs_clstate_mutex, "nfs_clstate_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; + long 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); +} + +/* + * These are the first fields of all the context structures passed into + * nfs_pnfsio(). + */ +struct pnfsio { + int done; + int inprog; + struct task tsk; +}; + +/* + * Do a mirror I/O on a pNFS thread. + */ +int +nfs_pnfsio(task_fn_t *func, void *context) +{ + struct pnfsio *pio; + int ret; + static struct taskqueue *pnfsioq = NULL; + + pio = (struct pnfsio *)context; + if (pnfsioq == NULL) { + if (nfs_pnfsiothreads == 0) + return (EPERM); + if (nfs_pnfsiothreads < 0) + nfs_pnfsiothreads = mp_ncpus * 4; + pnfsioq = taskqueue_create("pnfsioq", M_WAITOK, + taskqueue_thread_enqueue, &pnfsioq); + if (pnfsioq == NULL) + return (ENOMEM); + ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads, + 0, "pnfsiot"); + if (ret != 0) { + taskqueue_free(pnfsioq); + pnfsioq = NULL; + return (ret); + } + } + pio->inprog = 1; + TASK_INIT(&pio->tsk, 0, func, context); + ret = taskqueue_enqueue(pnfsioq, &pio->tsk); + if (ret != 0) + pio->inprog = 0; + return (ret); +} + +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); + mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF); + TAILQ_INIT(&nfsrv_devidhead); + callout_init(&newnfsd_callout, 1); + newnfs_init(); + nfsd_call_nfscommon = nfssvc_nfscommon; + loaded = 1; + break; + + case MOD_UNLOAD: + if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != NOTRUNNING || + nfs_numnfscbd != 0) { + error = EBUSY; + break; + } + + nfsd_call_nfscommon = NULL; + callout_drain(&newnfsd_callout); + /* Clean out the name<-->id cache. */ + nfsrv_cleanusergroup(); + /* and get rid of the mutexes */ + mtx_destroy(&nfs_nameid_mutex); + mtx_destroy(&newnfsd_mtx); + mtx_destroy(&nfs_state_mutex); + mtx_destroy(&nfs_clstate_mutex); + mtx_destroy(&nfs_sockl_mutex); + mtx_destroy(&nfs_slock_mutex); + mtx_destroy(&nfs_req_mutex); + mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); + mtx_destroy(&nfsrv_dslock_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); + |