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freebsd-dev/sys/fs/nfs/nfs_commonport.c
Rick Macklem 1a2079d936 Stop "nfsstat -z" from clearing counts of NFSv4 state structures. 
The "-z" option on nfsstats was erroneously zeroing out the counts
of NFSv4 state structures. These counts will normally go back down
to zero as state is released. When zeroed out by "-z", these counts
can go negative. This patch fixes this problem.

MFC after:	2 weeks
2016-11-25 23:28:09 +00:00

742 lines
21 KiB
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/*-
* 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 <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/sysctl.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 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 nfsstatsv1 nfsstatsv1;
int nfs_numnfscbd = 0;
int nfscl_debuglevel = 0;
char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
struct callout newnfsd_callout;
int nfsrv_lughashsize = 100;
void (*nfsd_call_servertimer)(void) = NULL;
void (*ncl_call_invalcaches)(struct vnode *) = NULL;
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");
/*
* 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;
/* 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, 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, 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;
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, 1);
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);
/* 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_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);
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