system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-07-22 10:48:02 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity
freebsd-src/sys/fs/nfs/nfs_commonport.c
Rick Macklem 03a39a1708 nfscl: Clear out a lot of cruft related to B_DIRECT 
There is only one place in the unpatched sources where B_DIRECT is
set in the NFS client and this code is never executed. As such, this patch
removes this code that is never executed, since B_DIRECT should never
be set.

During a IETF testing event this week, I saw a crash in ncl_doio_directwrite(),
but this function is only called if B_DIRECT is set.
I cannot explain how ncl_doio_directwrite() got called, but once this patch
was applied to the sources, the crash did not recur. This is not surprising,
since this patch deleted the function.

Reviewed by:	kib, markj
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D44980
2024-04-27 17:10:48 -07:00

970 lines
29 KiB
C
Raw Blame History

/*-
* 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>
/*
* 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 void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
struct thread *);
extern int nfsrv_useacl;
int newnfs_numnfsd = 0;
struct nfsstatsv1 nfsstatsv1;
int nfs_numnfscbd = 0;
int nfscl_debuglevel = 0;
char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
int nfsrv_lughashsize = 100;
struct mtx nfsrv_dslock_mtx;
struct nfsdevicehead nfsrv_devidhead;
volatile int nfsrv_devidcnt = 0;
void (*ncl_call_invalcaches)(struct vnode *) = NULL;
vop_advlock_t *nfs_advlock_p = NULL;
vop_reclaim_t *nfs_reclaim_p = NULL;
uint32_t nfs_srvmaxio = NFS_SRVMAXIO;
NFSD_VNET_DEFINE(struct nfsstatsv1 *, nfsstatsv1_p);
NFSD_VNET_DECLARE(struct nfssockreq, nfsrv_nfsuserdsock);
NFSD_VNET_DECLARE(nfsuserd_state, nfsrv_nfsuserd);
int nfs_pnfsio(task_fn_t *, void *);
static int nfs_realign_test;
static int nfs_realign_count;
static struct ext_nfsstats oldnfsstats;
static struct nfsstatsov1 nfsstatsov1;
SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW | CTLFLAG_MPSAFE, 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_NEWNFSDIROFF, "NFSCL diroff",
"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 __unused)
{
int error;
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname);
error = namei(ndp);
if (!error) {
NDFREE_PNBUF(ndp);
}
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);
}
/*
* 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;
NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td));
error = nfssvc_call(td, uap, td->td_ucred);
NFSD_CURVNET_RESTORE();
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 =
NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
oldnfsstats.attrcache_misses =
NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
oldnfsstats.lookupcache_hits =
NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
oldnfsstats.lookupcache_misses =
NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
oldnfsstats.direofcache_hits =
NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
oldnfsstats.direofcache_misses =
NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
oldnfsstats.accesscache_hits =
NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
oldnfsstats.accesscache_misses =
NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
oldnfsstats.biocache_reads =
NFSD_VNET(nfsstatsv1_p)->biocache_reads;
oldnfsstats.read_bios =
NFSD_VNET(nfsstatsv1_p)->read_bios;
oldnfsstats.read_physios =
NFSD_VNET(nfsstatsv1_p)->read_physios;
oldnfsstats.biocache_writes =
NFSD_VNET(nfsstatsv1_p)->biocache_writes;
oldnfsstats.write_bios =
NFSD_VNET(nfsstatsv1_p)->write_bios;
oldnfsstats.write_physios =
NFSD_VNET(nfsstatsv1_p)->write_physios;
oldnfsstats.biocache_readlinks =
NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
oldnfsstats.readlink_bios =
NFSD_VNET(nfsstatsv1_p)->readlink_bios;
oldnfsstats.biocache_readdirs =
NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
oldnfsstats.readdir_bios =
NFSD_VNET(nfsstatsv1_p)->readdir_bios;
for (i = 0; i < NFSV4_NPROCS; i++)
oldnfsstats.rpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
oldnfsstats.rpcretries =
NFSD_VNET(nfsstatsv1_p)->rpcretries;
for (i = 0; i < NFSV4OP_NOPS; i++)
oldnfsstats.srvrpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
oldnfsstats.srvrpccnt[j] =
NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
oldnfsstats.reserved_0 = 0;
oldnfsstats.reserved_1 = 0;
oldnfsstats.rpcrequests =
NFSD_VNET(nfsstatsv1_p)->rpcrequests;
oldnfsstats.rpctimeouts =
NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
oldnfsstats.rpcunexpected =
NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
oldnfsstats.rpcinvalid =
NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
oldnfsstats.srvcache_inproghits =
NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
oldnfsstats.reserved_2 = 0;
oldnfsstats.srvcache_nonidemdonehits =
NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
oldnfsstats.srvcache_misses =
NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
oldnfsstats.srvcache_tcppeak =
NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
oldnfsstats.srvcache_size =
NFSD_VNET(nfsstatsv1_p)->srvcache_size;
oldnfsstats.srvclients =
NFSD_VNET(nfsstatsv1_p)->srvclients;
oldnfsstats.srvopenowners =
NFSD_VNET(nfsstatsv1_p)->srvopenowners;
oldnfsstats.srvopens =
NFSD_VNET(nfsstatsv1_p)->srvopens;
oldnfsstats.srvlockowners =
NFSD_VNET(nfsstatsv1_p)->srvlockowners;
oldnfsstats.srvlocks =
NFSD_VNET(nfsstatsv1_p)->srvlocks;
oldnfsstats.srvdelegates =
NFSD_VNET(nfsstatsv1_p)->srvdelegates;
for (i = 0; i < NFSV4OP_CBNOPS; i++)
oldnfsstats.cbrpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
oldnfsstats.clopenowners =
NFSD_VNET(nfsstatsv1_p)->clopenowners;
oldnfsstats.clopens = NFSD_VNET(nfsstatsv1_p)->clopens;
oldnfsstats.cllockowners =
NFSD_VNET(nfsstatsv1_p)->cllockowners;
oldnfsstats.cllocks = NFSD_VNET(nfsstatsv1_p)->cllocks;
oldnfsstats.cldelegates =
NFSD_VNET(nfsstatsv1_p)->cldelegates;
oldnfsstats.cllocalopenowners =
NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
oldnfsstats.cllocalopens =
NFSD_VNET(nfsstatsv1_p)->cllocalopens;
oldnfsstats.cllocallockowners =
NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
oldnfsstats.cllocallocks =
NFSD_VNET(nfsstatsv1_p)->cllocallocks;
error = copyout(&oldnfsstats, uap->argp,
sizeof (oldnfsstats));
} else {
error = copyin(uap->argp, &nfsstatver,
sizeof(nfsstatver));
if (error == 0) {
if (nfsstatver.vers == NFSSTATS_OV1) {
/* Copy nfsstatsv1 to nfsstatsov1. */
nfsstatsov1.attrcache_hits =
NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
nfsstatsov1.attrcache_misses =
NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
nfsstatsov1.lookupcache_hits =
NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
nfsstatsov1.lookupcache_misses =
NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
nfsstatsov1.direofcache_hits =
NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
nfsstatsov1.direofcache_misses =
NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
nfsstatsov1.accesscache_hits =
NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
nfsstatsov1.accesscache_misses =
NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
nfsstatsov1.biocache_reads =
NFSD_VNET(nfsstatsv1_p)->biocache_reads;
nfsstatsov1.read_bios =
NFSD_VNET(nfsstatsv1_p)->read_bios;
nfsstatsov1.read_physios =
NFSD_VNET(nfsstatsv1_p)->read_physios;
nfsstatsov1.biocache_writes =
NFSD_VNET(nfsstatsv1_p)->biocache_writes;
nfsstatsov1.write_bios =
NFSD_VNET(nfsstatsv1_p)->write_bios;
nfsstatsov1.write_physios =
NFSD_VNET(nfsstatsv1_p)->write_physios;
nfsstatsov1.biocache_readlinks =
NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
nfsstatsov1.readlink_bios =
NFSD_VNET(nfsstatsv1_p)->readlink_bios;
nfsstatsov1.biocache_readdirs =
NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
nfsstatsov1.readdir_bios =
NFSD_VNET(nfsstatsv1_p)->readdir_bios;
for (i = 0; i < NFSV42_OLDNPROCS; i++)
nfsstatsov1.rpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
nfsstatsov1.rpcretries =
NFSD_VNET(nfsstatsv1_p)->rpcretries;
for (i = 0; i < NFSV42_PURENOPS; i++)
nfsstatsov1.srvrpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
for (i = NFSV42_NOPS,
j = NFSV42_PURENOPS;
i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
i++, j++)
nfsstatsov1.srvrpccnt[j] =
NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
nfsstatsov1.reserved_0 = 0;
nfsstatsov1.reserved_1 = 0;
nfsstatsov1.rpcrequests =
NFSD_VNET(nfsstatsv1_p)->rpcrequests;
nfsstatsov1.rpctimeouts =
NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
nfsstatsov1.rpcunexpected =
NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
nfsstatsov1.rpcinvalid =
NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
nfsstatsov1.srvcache_inproghits =
NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
nfsstatsov1.reserved_2 = 0;
nfsstatsov1.srvcache_nonidemdonehits =
NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
nfsstatsov1.srvcache_misses =
NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
nfsstatsov1.srvcache_tcppeak =
NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
nfsstatsov1.srvcache_size =
NFSD_VNET(nfsstatsv1_p)->srvcache_size;
nfsstatsov1.srvclients =
NFSD_VNET(nfsstatsv1_p)->srvclients;
nfsstatsov1.srvopenowners =
NFSD_VNET(nfsstatsv1_p)->srvopenowners;
nfsstatsov1.srvopens =
NFSD_VNET(nfsstatsv1_p)->srvopens;
nfsstatsov1.srvlockowners =
NFSD_VNET(nfsstatsv1_p)->srvlockowners;
nfsstatsov1.srvlocks =
NFSD_VNET(nfsstatsv1_p)->srvlocks;
nfsstatsov1.srvdelegates =
NFSD_VNET(nfsstatsv1_p)->srvdelegates;
for (i = 0; i < NFSV42_CBNOPS; i++)
nfsstatsov1.cbrpccnt[i] =
NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
nfsstatsov1.clopenowners =
NFSD_VNET(nfsstatsv1_p)->clopenowners;
nfsstatsov1.clopens =
NFSD_VNET(nfsstatsv1_p)->clopens;
nfsstatsov1.cllockowners =
NFSD_VNET(nfsstatsv1_p)->cllockowners;
nfsstatsov1.cllocks =
NFSD_VNET(nfsstatsv1_p)->cllocks;
nfsstatsov1.cldelegates =
NFSD_VNET(nfsstatsv1_p)->cldelegates;
nfsstatsov1.cllocalopenowners =
NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
nfsstatsov1.cllocalopens =
NFSD_VNET(nfsstatsv1_p)->cllocalopens;
nfsstatsov1.cllocallockowners =
NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
nfsstatsov1.cllocallocks =
NFSD_VNET(nfsstatsv1_p)->cllocallocks;
nfsstatsov1.srvstartcnt =
NFSD_VNET(nfsstatsv1_p)->srvstartcnt;
nfsstatsov1.srvdonecnt =
NFSD_VNET(nfsstatsv1_p)->srvdonecnt;
for (i = NFSV42_NOPS,
j = NFSV42_PURENOPS;
i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
i++, j++) {
nfsstatsov1.srvbytes[j] =
NFSD_VNET(nfsstatsv1_p)->srvbytes[i];
nfsstatsov1.srvops[j] =
NFSD_VNET(nfsstatsv1_p)->srvops[i];
nfsstatsov1.srvduration[j] =
NFSD_VNET(nfsstatsv1_p)->srvduration[i];
}
nfsstatsov1.busyfrom =
NFSD_VNET(nfsstatsv1_p)->busyfrom;
nfsstatsov1.busyfrom =
NFSD_VNET(nfsstatsv1_p)->busyfrom;
error = copyout(&nfsstatsov1, uap->argp,
sizeof(nfsstatsov1));
} else if (nfsstatver.vers != NFSSTATS_V1)
error = EPERM;
else
error = copyout(NFSD_VNET(nfsstatsv1_p),
uap->argp, sizeof(nfsstatsv1));
}
}
if (error == 0) {
if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
NFSD_VNET(nfsstatsv1_p)->attrcache_hits = 0;
NFSD_VNET(nfsstatsv1_p)->attrcache_misses = 0;
NFSD_VNET(nfsstatsv1_p)->lookupcache_hits = 0;
NFSD_VNET(nfsstatsv1_p)->lookupcache_misses = 0;
NFSD_VNET(nfsstatsv1_p)->direofcache_hits = 0;
NFSD_VNET(nfsstatsv1_p)->direofcache_misses = 0;
NFSD_VNET(nfsstatsv1_p)->accesscache_hits = 0;
NFSD_VNET(nfsstatsv1_p)->accesscache_misses = 0;
NFSD_VNET(nfsstatsv1_p)->biocache_reads = 0;
NFSD_VNET(nfsstatsv1_p)->read_bios = 0;
NFSD_VNET(nfsstatsv1_p)->read_physios = 0;
NFSD_VNET(nfsstatsv1_p)->biocache_writes = 0;
NFSD_VNET(nfsstatsv1_p)->write_bios = 0;
NFSD_VNET(nfsstatsv1_p)->write_physios = 0;
NFSD_VNET(nfsstatsv1_p)->biocache_readlinks = 0;
NFSD_VNET(nfsstatsv1_p)->readlink_bios = 0;
NFSD_VNET(nfsstatsv1_p)->biocache_readdirs = 0;
NFSD_VNET(nfsstatsv1_p)->readdir_bios = 0;
NFSD_VNET(nfsstatsv1_p)->rpcretries = 0;
NFSD_VNET(nfsstatsv1_p)->rpcrequests = 0;
NFSD_VNET(nfsstatsv1_p)->rpctimeouts = 0;
NFSD_VNET(nfsstatsv1_p)->rpcunexpected = 0;
NFSD_VNET(nfsstatsv1_p)->rpcinvalid = 0;
bzero(NFSD_VNET(nfsstatsv1_p)->rpccnt,
sizeof(NFSD_VNET(nfsstatsv1_p)->rpccnt));
}
if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits = 0;
NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits = 0;
NFSD_VNET(nfsstatsv1_p)->srvcache_misses = 0;
NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak = 0;
bzero(NFSD_VNET(nfsstatsv1_p)->srvrpccnt,
sizeof(NFSD_VNET(nfsstatsv1_p)->srvrpccnt));
bzero(NFSD_VNET(nfsstatsv1_p)->cbrpccnt,
sizeof(NFSD_VNET(nfsstatsv1_p)->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);
}
/*
* Initialize everything that needs to be initialized for a vnet.
*/
static void
nfs_vnetinit(const void *unused __unused)
{
if (IS_DEFAULT_VNET(curvnet))
NFSD_VNET(nfsstatsv1_p) = &nfsstatsv1;
else
NFSD_VNET(nfsstatsv1_p) = malloc(sizeof(struct nfsstatsv1),
M_TEMP, M_WAITOK | M_ZERO);
mtx_init(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx, "nfsuserd",
NULL, MTX_DEF);
}
VNET_SYSINIT(nfs_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
nfs_vnetinit, NULL);
static void
nfs_cleanup(void *unused __unused)
{
mtx_destroy(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx);
if (!IS_DEFAULT_VNET(curvnet)) {
free(NFSD_VNET(nfsstatsv1_p), M_TEMP);
NFSD_VNET(nfsstatsv1_p) = NULL;
}
/* Clean out the name<-->id cache. */
nfsrv_cleanusergroup();
}
VNET_SYSUNINIT(nfs_cleanup, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
nfs_cleanup, NULL);
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_dslock_mtx, "nfs4ds", NULL, MTX_DEF);
TAILQ_INIT(&nfsrv_devidhead);
newnfs_init();
nfsd_call_nfscommon = nfssvc_nfscommon;
loaded = 1;
break;
case MOD_UNLOAD:
if (newnfs_numnfsd != 0 ||
NFSD_VNET(nfsrv_nfsuserd) != NOTRUNNING ||
nfs_numnfscbd != 0) {
error = EBUSY;
break;
}
nfsd_call_nfscommon = NULL;
/* 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_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);
Reference in a new issue View git blame Copy permalink