1664 lines
46 KiB
C
1664 lines
46 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1989, 1991, 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.
|
|
* 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>
|
|
/*
|
|
* Socket operations for use by nfs
|
|
*/
|
|
|
|
#include "opt_kgssapi.h"
|
|
#include "opt_nfs.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/limits.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/vnode.h>
|
|
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/krpc.h>
|
|
|
|
#include <kgssapi/krb5/kcrypto.h>
|
|
|
|
#include <fs/nfs/nfsport.h>
|
|
|
|
#ifdef KDTRACE_HOOKS
|
|
#include <sys/dtrace_bsd.h>
|
|
|
|
dtrace_nfsclient_nfs23_start_probe_func_t
|
|
dtrace_nfscl_nfs234_start_probe;
|
|
|
|
dtrace_nfsclient_nfs23_done_probe_func_t
|
|
dtrace_nfscl_nfs234_done_probe;
|
|
|
|
/*
|
|
* Registered probes by RPC type.
|
|
*/
|
|
uint32_t nfscl_nfs2_start_probes[NFSV41_NPROCS + 1];
|
|
uint32_t nfscl_nfs2_done_probes[NFSV41_NPROCS + 1];
|
|
|
|
uint32_t nfscl_nfs3_start_probes[NFSV41_NPROCS + 1];
|
|
uint32_t nfscl_nfs3_done_probes[NFSV41_NPROCS + 1];
|
|
|
|
uint32_t nfscl_nfs4_start_probes[NFSV41_NPROCS + 1];
|
|
uint32_t nfscl_nfs4_done_probes[NFSV41_NPROCS + 1];
|
|
#endif
|
|
|
|
NFSSTATESPINLOCK;
|
|
NFSREQSPINLOCK;
|
|
NFSDLOCKMUTEX;
|
|
NFSCLSTATEMUTEX;
|
|
extern struct nfsstatsv1 nfsstatsv1;
|
|
extern struct nfsreqhead nfsd_reqq;
|
|
extern int nfscl_ticks;
|
|
extern void (*ncl_call_invalcaches)(struct vnode *);
|
|
extern int nfs_numnfscbd;
|
|
extern int nfscl_debuglevel;
|
|
extern int nfsrv_lease;
|
|
|
|
SVCPOOL *nfscbd_pool;
|
|
int nfs_bufpackets = 4;
|
|
static int nfsrv_gsscallbackson = 0;
|
|
static int nfs_reconnects;
|
|
static int nfs3_jukebox_delay = 10;
|
|
static int nfs_skip_wcc_data_onerr = 1;
|
|
static int nfs_dsretries = 2;
|
|
static struct timespec nfs_trylater_max = {
|
|
.tv_sec = NFS_TRYLATERDEL,
|
|
.tv_nsec = 0,
|
|
};
|
|
|
|
SYSCTL_DECL(_vfs_nfs);
|
|
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0,
|
|
"Buffer reservation size 2 < x < 64");
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0,
|
|
"Number of times the nfs client has had to reconnect");
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0,
|
|
"Number of seconds to delay a retry after receiving EJUKEBOX");
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0,
|
|
"Disable weak cache consistency checking when server returns an error");
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, dsretries, CTLFLAG_RW, &nfs_dsretries, 0,
|
|
"Number of retries for a DS RPC before failure");
|
|
|
|
static void nfs_down(struct nfsmount *, struct thread *, const char *,
|
|
int, int);
|
|
static void nfs_up(struct nfsmount *, struct thread *, const char *,
|
|
int, int);
|
|
static int nfs_msg(struct thread *, const char *, const char *, int);
|
|
|
|
struct nfs_cached_auth {
|
|
int ca_refs; /* refcount, including 1 from the cache */
|
|
uid_t ca_uid; /* uid that corresponds to this auth */
|
|
AUTH *ca_auth; /* RPC auth handle */
|
|
};
|
|
|
|
static int nfsv2_procid[NFS_V3NPROCS] = {
|
|
NFSV2PROC_NULL,
|
|
NFSV2PROC_GETATTR,
|
|
NFSV2PROC_SETATTR,
|
|
NFSV2PROC_LOOKUP,
|
|
NFSV2PROC_NOOP,
|
|
NFSV2PROC_READLINK,
|
|
NFSV2PROC_READ,
|
|
NFSV2PROC_WRITE,
|
|
NFSV2PROC_CREATE,
|
|
NFSV2PROC_MKDIR,
|
|
NFSV2PROC_SYMLINK,
|
|
NFSV2PROC_CREATE,
|
|
NFSV2PROC_REMOVE,
|
|
NFSV2PROC_RMDIR,
|
|
NFSV2PROC_RENAME,
|
|
NFSV2PROC_LINK,
|
|
NFSV2PROC_READDIR,
|
|
NFSV2PROC_NOOP,
|
|
NFSV2PROC_STATFS,
|
|
NFSV2PROC_NOOP,
|
|
NFSV2PROC_NOOP,
|
|
NFSV2PROC_NOOP,
|
|
};
|
|
|
|
/*
|
|
* This static array indicates that a NFSv4 RPC should use
|
|
* RPCSEC_GSS, if the mount indicates that via sec=krb5[ip].
|
|
* System RPCs that do not use file handles will be false
|
|
* in this array so that they will use AUTH_SYS when the
|
|
* "syskrb5" mount option is specified, along with
|
|
* "sec=krb5[ip]".
|
|
*/
|
|
static bool nfscl_use_gss[NFSV42_NPROCS] = {
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false, /* SetClientID */
|
|
false, /* SetClientIDConfirm */
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false, /* Renew */
|
|
true,
|
|
false, /* ReleaseLockOwn */
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false, /* ExchangeID */
|
|
false, /* CreateSession */
|
|
false, /* DestroySession */
|
|
false, /* DestroyClientID */
|
|
false, /* FreeStateID */
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false, /* ReclaimComplete */
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false, /* BindConnectionToSession */
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
};
|
|
|
|
/*
|
|
* Initialize sockets and congestion for a new NFS connection.
|
|
* We do not free the sockaddr if error.
|
|
* Which arguments are set to NULL indicate what kind of call it is.
|
|
* cred == NULL --> a call to connect to a pNFS DS
|
|
* nmp == NULL --> indicates an upcall to userland or a NFSv4.0 callback
|
|
*/
|
|
int
|
|
newnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp,
|
|
struct ucred *cred, NFSPROC_T *p, int callback_retry_mult, bool dotls,
|
|
struct __rpc_client **clipp)
|
|
{
|
|
int rcvreserve, sndreserve;
|
|
int pktscale, pktscalesav;
|
|
struct sockaddr *saddr;
|
|
struct ucred *origcred;
|
|
CLIENT *client;
|
|
struct netconfig *nconf;
|
|
struct socket *so;
|
|
int one = 1, retries, error = 0;
|
|
struct thread *td = curthread;
|
|
SVCXPRT *xprt;
|
|
struct timeval timo;
|
|
uint64_t tval;
|
|
|
|
/*
|
|
* We need to establish the socket using the credentials of
|
|
* the mountpoint. Some parts of this process (such as
|
|
* sobind() and soconnect()) will use the curent thread's
|
|
* credential instead of the socket credential. To work
|
|
* around this, temporarily change the current thread's
|
|
* credential to that of the mountpoint.
|
|
*
|
|
* XXX: It would be better to explicitly pass the correct
|
|
* credential to sobind() and soconnect().
|
|
*/
|
|
origcred = td->td_ucred;
|
|
|
|
/*
|
|
* Use the credential in nr_cred, if not NULL.
|
|
*/
|
|
if (nrp->nr_cred != NULL)
|
|
td->td_ucred = nrp->nr_cred;
|
|
else
|
|
td->td_ucred = cred;
|
|
saddr = nrp->nr_nam;
|
|
|
|
if (saddr->sa_family == AF_INET)
|
|
if (nrp->nr_sotype == SOCK_DGRAM)
|
|
nconf = getnetconfigent("udp");
|
|
else
|
|
nconf = getnetconfigent("tcp");
|
|
else
|
|
if (nrp->nr_sotype == SOCK_DGRAM)
|
|
nconf = getnetconfigent("udp6");
|
|
else
|
|
nconf = getnetconfigent("tcp6");
|
|
|
|
pktscale = nfs_bufpackets;
|
|
if (pktscale < 2)
|
|
pktscale = 2;
|
|
if (pktscale > 64)
|
|
pktscale = 64;
|
|
pktscalesav = pktscale;
|
|
/*
|
|
* soreserve() can fail if sb_max is too small, so shrink pktscale
|
|
* and try again if there is an error.
|
|
* Print a log message suggesting increasing sb_max.
|
|
* Creating a socket and doing this is necessary since, if the
|
|
* reservation sizes are too large and will make soreserve() fail,
|
|
* the connection will work until a large send is attempted and
|
|
* then it will loop in the krpc code.
|
|
*/
|
|
so = NULL;
|
|
saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *);
|
|
error = socreate(saddr->sa_family, &so, nrp->nr_sotype,
|
|
nrp->nr_soproto, td->td_ucred, td);
|
|
if (error != 0)
|
|
goto out;
|
|
do {
|
|
if (error != 0 && pktscale > 2) {
|
|
if (nmp != NULL && nrp->nr_sotype == SOCK_STREAM &&
|
|
pktscale == pktscalesav) {
|
|
/*
|
|
* Suggest vfs.nfs.bufpackets * maximum RPC message,
|
|
* adjusted for the sb_max->sb_max_adj conversion of
|
|
* MCLBYTES / (MSIZE + MCLBYTES) as the minimum setting
|
|
* for kern.ipc.maxsockbuf.
|
|
*/
|
|
tval = (NFS_MAXBSIZE + NFS_MAXXDR) * nfs_bufpackets;
|
|
tval *= MSIZE + MCLBYTES;
|
|
tval += MCLBYTES - 1; /* Round up divide by MCLBYTES. */
|
|
tval /= MCLBYTES;
|
|
printf("Consider increasing kern.ipc.maxsockbuf to a "
|
|
"minimum of %ju to support %ubyte NFS I/O\n",
|
|
(uintmax_t)tval, NFS_MAXBSIZE);
|
|
}
|
|
pktscale--;
|
|
}
|
|
if (nrp->nr_sotype == SOCK_DGRAM) {
|
|
if (nmp != NULL) {
|
|
sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) *
|
|
pktscale;
|
|
rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) *
|
|
pktscale;
|
|
} else {
|
|
sndreserve = rcvreserve = 1024 * pktscale;
|
|
}
|
|
} else {
|
|
if (nrp->nr_sotype != SOCK_STREAM)
|
|
panic("nfscon sotype");
|
|
if (nmp != NULL) {
|
|
sndreserve = (NFS_MAXBSIZE + NFS_MAXXDR) *
|
|
pktscale;
|
|
rcvreserve = (NFS_MAXBSIZE + NFS_MAXXDR) *
|
|
pktscale;
|
|
} else {
|
|
sndreserve = rcvreserve = 1024 * pktscale;
|
|
}
|
|
}
|
|
error = soreserve(so, sndreserve, rcvreserve);
|
|
if (error != 0 && nmp != NULL && nrp->nr_sotype == SOCK_STREAM &&
|
|
pktscale <= 2)
|
|
printf("Must increase kern.ipc.maxsockbuf or reduce"
|
|
" rsize, wsize\n");
|
|
} while (error != 0 && pktscale > 2);
|
|
soclose(so);
|
|
if (error != 0)
|
|
goto out;
|
|
|
|
client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog,
|
|
nrp->nr_vers, sndreserve, rcvreserve);
|
|
CLNT_CONTROL(client, CLSET_WAITCHAN, "nfsreq");
|
|
if (nmp != NULL) {
|
|
if ((nmp->nm_flag & NFSMNT_INT))
|
|
CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one);
|
|
if ((nmp->nm_flag & NFSMNT_RESVPORT))
|
|
CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
|
|
if (NFSHASTLS(nmp)) {
|
|
CLNT_CONTROL(client, CLSET_TLS, &one);
|
|
if (nmp->nm_tlscertname != NULL)
|
|
CLNT_CONTROL(client, CLSET_TLSCERTNAME,
|
|
nmp->nm_tlscertname);
|
|
}
|
|
if (NFSHASSOFT(nmp)) {
|
|
if (nmp->nm_sotype == SOCK_DGRAM)
|
|
/*
|
|
* For UDP, the large timeout for a reconnect
|
|
* will be set to "nm_retry * nm_timeo / 2", so
|
|
* we only want to do 2 reconnect timeout
|
|
* retries.
|
|
*/
|
|
retries = 2;
|
|
else
|
|
retries = nmp->nm_retry;
|
|
} else
|
|
retries = INT_MAX;
|
|
if (NFSHASNFSV4N(nmp)) {
|
|
if (cred != NULL) {
|
|
if (NFSHASSOFT(nmp)) {
|
|
/*
|
|
* This should be a DS mount.
|
|
* Use CLSET_TIMEOUT to set the timeout
|
|
* for connections to DSs instead of
|
|
* specifying a timeout on each RPC.
|
|
* This is done so that SO_SNDTIMEO
|
|
* is set on the TCP socket as well
|
|
* as specifying a time limit when
|
|
* waiting for an RPC reply. Useful
|
|
* if the send queue for the TCP
|
|
* connection has become constipated,
|
|
* due to a failed DS.
|
|
* The choice of lease_duration / 4 is
|
|
* fairly arbitrary, but seems to work
|
|
* ok, with a lower bound of 10sec.
|
|
*/
|
|
timo.tv_sec = nfsrv_lease / 4;
|
|
if (timo.tv_sec < 10)
|
|
timo.tv_sec = 10;
|
|
timo.tv_usec = 0;
|
|
CLNT_CONTROL(client, CLSET_TIMEOUT,
|
|
&timo);
|
|
}
|
|
/*
|
|
* Make sure the nfscbd_pool doesn't get
|
|
* destroyed while doing this.
|
|
*/
|
|
NFSD_LOCK();
|
|
if (nfs_numnfscbd > 0) {
|
|
nfs_numnfscbd++;
|
|
NFSD_UNLOCK();
|
|
xprt = svc_vc_create_backchannel(
|
|
nfscbd_pool);
|
|
CLNT_CONTROL(client, CLSET_BACKCHANNEL,
|
|
xprt);
|
|
NFSD_LOCK();
|
|
nfs_numnfscbd--;
|
|
if (nfs_numnfscbd == 0)
|
|
wakeup(&nfs_numnfscbd);
|
|
}
|
|
NFSD_UNLOCK();
|
|
} else {
|
|
/*
|
|
* cred == NULL for a DS connect.
|
|
* For connects to a DS, set a retry limit
|
|
* so that failed DSs will be detected.
|
|
* This is ok for NFSv4.1, since a DS does
|
|
* not maintain open/lock state and is the
|
|
* only case where using a "soft" mount is
|
|
* recommended for NFSv4.
|
|
* For mounts from the MDS to DS, this is done
|
|
* via mount options, but that is not the case
|
|
* here. The retry limit here can be adjusted
|
|
* via the sysctl vfs.nfs.dsretries.
|
|
* See the comment above w.r.t. timeout.
|
|
*/
|
|
timo.tv_sec = nfsrv_lease / 4;
|
|
if (timo.tv_sec < 10)
|
|
timo.tv_sec = 10;
|
|
timo.tv_usec = 0;
|
|
CLNT_CONTROL(client, CLSET_TIMEOUT, &timo);
|
|
retries = nfs_dsretries;
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* Three cases:
|
|
* - Null RPC callback to client
|
|
* - Non-Null RPC callback to client, wait a little longer
|
|
* - upcalls to nfsuserd and gssd (clp == NULL)
|
|
*/
|
|
if (callback_retry_mult == 0) {
|
|
retries = NFSV4_UPCALLRETRY;
|
|
CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
|
|
} else {
|
|
retries = NFSV4_CALLBACKRETRY * callback_retry_mult;
|
|
}
|
|
if (dotls)
|
|
CLNT_CONTROL(client, CLSET_TLS, &one);
|
|
}
|
|
CLNT_CONTROL(client, CLSET_RETRIES, &retries);
|
|
|
|
if (nmp != NULL) {
|
|
/*
|
|
* For UDP, there are 2 timeouts:
|
|
* - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer
|
|
* that does a retransmit of an RPC request using the same
|
|
* socket and xid. This is what you normally want to do,
|
|
* since NFS servers depend on "same xid" for their
|
|
* Duplicate Request Cache.
|
|
* - timeout specified in CLNT_CALL_MBUF(), which specifies when
|
|
* retransmits on the same socket should fail and a fresh
|
|
* socket created. Each of these timeouts counts as one
|
|
* CLSET_RETRIES as set above.
|
|
* Set the initial retransmit timeout for UDP. This timeout
|
|
* doesn't exist for TCP and the following call just fails,
|
|
* which is ok.
|
|
*/
|
|
timo.tv_sec = nmp->nm_timeo / NFS_HZ;
|
|
timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ;
|
|
CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo);
|
|
}
|
|
|
|
/*
|
|
* *clipp is &nrp->nr_client or &nm_aconn[nmp->nm_nextaconn].
|
|
* The latter case is for additional connections specified by the
|
|
* "nconnect" mount option. nr_mtx etc is used for these additional
|
|
* connections, as well as nr_client in the nfssockreq
|
|
* structure for the mount.
|
|
*/
|
|
mtx_lock(&nrp->nr_mtx);
|
|
if (*clipp != NULL) {
|
|
mtx_unlock(&nrp->nr_mtx);
|
|
/*
|
|
* Someone else already connected.
|
|
*/
|
|
CLNT_RELEASE(client);
|
|
} else {
|
|
*clipp = client;
|
|
/*
|
|
* Protocols that do not require connections may be optionally
|
|
* left unconnected for servers that reply from a port other
|
|
* than NFS_PORT.
|
|
*/
|
|
if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) {
|
|
mtx_unlock(&nrp->nr_mtx);
|
|
CLNT_CONTROL(client, CLSET_CONNECT, &one);
|
|
} else
|
|
mtx_unlock(&nrp->nr_mtx);
|
|
}
|
|
|
|
out:
|
|
/* Restore current thread's credentials. */
|
|
td->td_ucred = origcred;
|
|
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* NFS disconnect. Clean up and unlink.
|
|
*/
|
|
void
|
|
newnfs_disconnect(struct nfsmount *nmp, struct nfssockreq *nrp)
|
|
{
|
|
CLIENT *client, *aconn[NFS_MAXNCONN - 1];
|
|
int i;
|
|
|
|
mtx_lock(&nrp->nr_mtx);
|
|
if (nrp->nr_client != NULL) {
|
|
client = nrp->nr_client;
|
|
nrp->nr_client = NULL;
|
|
if (nmp != NULL && nmp->nm_aconnect > 0) {
|
|
for (i = 0; i < nmp->nm_aconnect; i++) {
|
|
aconn[i] = nmp->nm_aconn[i];
|
|
nmp->nm_aconn[i] = NULL;
|
|
}
|
|
}
|
|
mtx_unlock(&nrp->nr_mtx);
|
|
rpc_gss_secpurge_call(client);
|
|
CLNT_CLOSE(client);
|
|
CLNT_RELEASE(client);
|
|
if (nmp != NULL && nmp->nm_aconnect > 0) {
|
|
for (i = 0; i < nmp->nm_aconnect; i++) {
|
|
if (aconn[i] != NULL) {
|
|
rpc_gss_secpurge_call(aconn[i]);
|
|
CLNT_CLOSE(aconn[i]);
|
|
CLNT_RELEASE(aconn[i]);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
mtx_unlock(&nrp->nr_mtx);
|
|
}
|
|
}
|
|
|
|
static AUTH *
|
|
nfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal,
|
|
char *srv_principal, gss_OID mech_oid, struct ucred *cred)
|
|
{
|
|
rpc_gss_service_t svc;
|
|
AUTH *auth;
|
|
|
|
switch (secflavour) {
|
|
case RPCSEC_GSS_KRB5:
|
|
case RPCSEC_GSS_KRB5I:
|
|
case RPCSEC_GSS_KRB5P:
|
|
if (!mech_oid) {
|
|
if (!rpc_gss_mech_to_oid_call("kerberosv5", &mech_oid))
|
|
return (NULL);
|
|
}
|
|
if (secflavour == RPCSEC_GSS_KRB5)
|
|
svc = rpc_gss_svc_none;
|
|
else if (secflavour == RPCSEC_GSS_KRB5I)
|
|
svc = rpc_gss_svc_integrity;
|
|
else
|
|
svc = rpc_gss_svc_privacy;
|
|
|
|
if (clnt_principal == NULL)
|
|
auth = rpc_gss_secfind_call(nrp->nr_client, cred,
|
|
srv_principal, mech_oid, svc);
|
|
else {
|
|
auth = rpc_gss_seccreate_call(nrp->nr_client, cred,
|
|
clnt_principal, srv_principal, "kerberosv5",
|
|
svc, NULL, NULL, NULL);
|
|
return (auth);
|
|
}
|
|
if (auth != NULL)
|
|
return (auth);
|
|
/* fallthrough */
|
|
case AUTH_SYS:
|
|
default:
|
|
return (authunix_create(cred));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Callback from the RPC code to generate up/down notifications.
|
|
*/
|
|
|
|
struct nfs_feedback_arg {
|
|
struct nfsmount *nf_mount;
|
|
int nf_lastmsg; /* last tprintf */
|
|
int nf_tprintfmsg;
|
|
struct thread *nf_td;
|
|
};
|
|
|
|
static void
|
|
nfs_feedback(int type, int proc, void *arg)
|
|
{
|
|
struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg;
|
|
struct nfsmount *nmp = nf->nf_mount;
|
|
time_t now;
|
|
|
|
switch (type) {
|
|
case FEEDBACK_REXMIT2:
|
|
case FEEDBACK_RECONNECT:
|
|
now = NFSD_MONOSEC;
|
|
if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now) {
|
|
nfs_down(nmp, nf->nf_td,
|
|
"not responding", 0, NFSSTA_TIMEO);
|
|
nf->nf_tprintfmsg = TRUE;
|
|
nf->nf_lastmsg = now;
|
|
}
|
|
break;
|
|
|
|
case FEEDBACK_OK:
|
|
nfs_up(nf->nf_mount, nf->nf_td,
|
|
"is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* newnfs_request - goes something like this
|
|
* - does the rpc by calling the krpc layer
|
|
* - break down rpc header and return with nfs reply
|
|
* nb: always frees up nd_mreq mbuf list
|
|
*/
|
|
int
|
|
newnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp,
|
|
struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp,
|
|
struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers,
|
|
u_char *retsum, int toplevel, u_int64_t *xidp, struct nfsclsession *dssep)
|
|
{
|
|
uint32_t retseq, retval, slotseq, *tl;
|
|
int i = 0, j = 0, opcnt, set_sigset = 0, slot;
|
|
int error = 0, usegssname = 0, secflavour = AUTH_SYS;
|
|
int freeslot, maxslot, reterr, slotpos, timeo;
|
|
u_int16_t procnum;
|
|
u_int nextconn;
|
|
struct nfs_feedback_arg nf;
|
|
struct timeval timo;
|
|
AUTH *auth;
|
|
struct rpc_callextra ext;
|
|
enum clnt_stat stat;
|
|
struct nfsreq *rep = NULL;
|
|
char *srv_principal = NULL, *clnt_principal = NULL;
|
|
sigset_t oldset;
|
|
struct ucred *authcred;
|
|
struct nfsclsession *sep;
|
|
uint8_t sessionid[NFSX_V4SESSIONID];
|
|
bool nextconn_set;
|
|
struct timespec trylater_delay, ts, waituntil;
|
|
|
|
/* Initially 1msec. */
|
|
trylater_delay.tv_sec = 0;
|
|
trylater_delay.tv_nsec = 1000000;
|
|
sep = dssep;
|
|
if (xidp != NULL)
|
|
*xidp = 0;
|
|
/* Reject requests while attempting a forced unmount. */
|
|
if (nmp != NULL && NFSCL_FORCEDISM(nmp->nm_mountp)) {
|
|
m_freem(nd->nd_mreq);
|
|
return (ESTALE);
|
|
}
|
|
|
|
/*
|
|
* Set authcred, which is used to acquire RPC credentials to
|
|
* the cred argument, by default. The crhold() should not be
|
|
* necessary, but will ensure that some future code change
|
|
* doesn't result in the credential being free'd prematurely.
|
|
*/
|
|
authcred = crhold(cred);
|
|
|
|
/* For client side interruptible mounts, mask off the signals. */
|
|
if (nmp != NULL && td != NULL && NFSHASINT(nmp)) {
|
|
newnfs_set_sigmask(td, &oldset);
|
|
set_sigset = 1;
|
|
}
|
|
|
|
/*
|
|
* If not already connected call newnfs_connect now.
|
|
*/
|
|
if (nrp->nr_client == NULL)
|
|
newnfs_connect(nmp, nrp, cred, td, 0, false, &nrp->nr_client);
|
|
|
|
/*
|
|
* If the "nconnect" mount option was specified and this RPC is
|
|
* one that can have a large RPC message and is being done through
|
|
* the NFS/MDS server, use an additional connection. (When the RPC is
|
|
* being done through the server/MDS, nrp == &nmp->nm_sockreq.)
|
|
* The "nconnect" mount option normally has minimal effect when the
|
|
* "pnfs" mount option is specified, since only Readdir RPCs are
|
|
* normally done through the NFS/MDS server.
|
|
*/
|
|
nextconn_set = false;
|
|
if (nmp != NULL && nmp->nm_aconnect > 0 && nrp == &nmp->nm_sockreq &&
|
|
(nd->nd_procnum == NFSPROC_READ ||
|
|
nd->nd_procnum == NFSPROC_READDIR ||
|
|
nd->nd_procnum == NFSPROC_READDIRPLUS ||
|
|
nd->nd_procnum == NFSPROC_WRITE)) {
|
|
nextconn = atomic_fetchadd_int(&nmp->nm_nextaconn, 1);
|
|
nextconn %= nmp->nm_aconnect;
|
|
nextconn_set = true;
|
|
if (nmp->nm_aconn[nextconn] == NULL)
|
|
newnfs_connect(nmp, nrp, cred, td, 0, false,
|
|
&nmp->nm_aconn[nextconn]);
|
|
}
|
|
|
|
/*
|
|
* For a client side mount, nmp is != NULL and clp == NULL. For
|
|
* server calls (callbacks or upcalls), nmp == NULL.
|
|
*/
|
|
if (clp != NULL) {
|
|
NFSLOCKSTATE();
|
|
if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) {
|
|
secflavour = RPCSEC_GSS_KRB5;
|
|
if (nd->nd_procnum != NFSPROC_NULL) {
|
|
if (clp->lc_flags & LCL_GSSINTEGRITY)
|
|
secflavour = RPCSEC_GSS_KRB5I;
|
|
else if (clp->lc_flags & LCL_GSSPRIVACY)
|
|
secflavour = RPCSEC_GSS_KRB5P;
|
|
}
|
|
}
|
|
NFSUNLOCKSTATE();
|
|
} else if (nmp != NULL && NFSHASKERB(nmp) &&
|
|
nd->nd_procnum != NFSPROC_NULL && (!NFSHASSYSKRB5(nmp) ||
|
|
nfscl_use_gss[nd->nd_procnum])) {
|
|
if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0)
|
|
nd->nd_flag |= ND_USEGSSNAME;
|
|
if ((nd->nd_flag & ND_USEGSSNAME) != 0) {
|
|
/*
|
|
* If there is a client side host based credential,
|
|
* use that, otherwise use the system uid, if set.
|
|
* The system uid is in the nmp->nm_sockreq.nr_cred
|
|
* credentials.
|
|
*/
|
|
if (nmp->nm_krbnamelen > 0) {
|
|
usegssname = 1;
|
|
clnt_principal = nmp->nm_krbname;
|
|
} else if (nmp->nm_uid != (uid_t)-1) {
|
|
KASSERT(nmp->nm_sockreq.nr_cred != NULL,
|
|
("newnfs_request: NULL nr_cred"));
|
|
crfree(authcred);
|
|
authcred = crhold(nmp->nm_sockreq.nr_cred);
|
|
}
|
|
} else if (nmp->nm_krbnamelen == 0 &&
|
|
nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) {
|
|
/*
|
|
* If there is no host based principal name and
|
|
* the system uid is set and this is root, use the
|
|
* system uid, since root won't have user
|
|
* credentials in a credentials cache file.
|
|
* The system uid is in the nmp->nm_sockreq.nr_cred
|
|
* credentials.
|
|
*/
|
|
KASSERT(nmp->nm_sockreq.nr_cred != NULL,
|
|
("newnfs_request: NULL nr_cred"));
|
|
crfree(authcred);
|
|
authcred = crhold(nmp->nm_sockreq.nr_cred);
|
|
}
|
|
if (NFSHASINTEGRITY(nmp))
|
|
secflavour = RPCSEC_GSS_KRB5I;
|
|
else if (NFSHASPRIVACY(nmp))
|
|
secflavour = RPCSEC_GSS_KRB5P;
|
|
else
|
|
secflavour = RPCSEC_GSS_KRB5;
|
|
srv_principal = NFSMNT_SRVKRBNAME(nmp);
|
|
} else if (nmp != NULL && (!NFSHASKERB(nmp) || NFSHASSYSKRB5(nmp)) &&
|
|
nd->nd_procnum != NFSPROC_NULL &&
|
|
(nd->nd_flag & ND_USEGSSNAME) != 0) {
|
|
/*
|
|
* Use the uid that did the mount when the RPC is doing
|
|
* NFSv4 system operations, as indicated by the
|
|
* ND_USEGSSNAME flag, for the AUTH_SYS case.
|
|
* The credentials in nm_sockreq.nr_cred were used for the
|
|
* mount.
|
|
*/
|
|
KASSERT(nmp->nm_sockreq.nr_cred != NULL,
|
|
("newnfs_request: NULL nr_cred"));
|
|
crfree(authcred);
|
|
authcred = crhold(nmp->nm_sockreq.nr_cred);
|
|
}
|
|
|
|
if (nmp != NULL) {
|
|
bzero(&nf, sizeof(struct nfs_feedback_arg));
|
|
nf.nf_mount = nmp;
|
|
nf.nf_td = td;
|
|
nf.nf_lastmsg = NFSD_MONOSEC -
|
|
((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay));
|
|
}
|
|
|
|
if (nd->nd_procnum == NFSPROC_NULL)
|
|
auth = authnone_create();
|
|
else if (usegssname) {
|
|
/*
|
|
* For this case, the authenticator is held in the
|
|
* nfssockreq structure, so don't release the reference count
|
|
* held on it. --> Don't AUTH_DESTROY() it in this function.
|
|
*/
|
|
if (nrp->nr_auth == NULL)
|
|
nrp->nr_auth = nfs_getauth(nrp, secflavour,
|
|
clnt_principal, srv_principal, NULL, authcred);
|
|
else
|
|
rpc_gss_refresh_auth_call(nrp->nr_auth);
|
|
auth = nrp->nr_auth;
|
|
} else
|
|
auth = nfs_getauth(nrp, secflavour, NULL,
|
|
srv_principal, NULL, authcred);
|
|
crfree(authcred);
|
|
if (auth == NULL) {
|
|
m_freem(nd->nd_mreq);
|
|
if (set_sigset)
|
|
newnfs_restore_sigmask(td, &oldset);
|
|
return (EACCES);
|
|
}
|
|
bzero(&ext, sizeof(ext));
|
|
ext.rc_auth = auth;
|
|
if (nmp != NULL) {
|
|
ext.rc_feedback = nfs_feedback;
|
|
ext.rc_feedback_arg = &nf;
|
|
}
|
|
|
|
procnum = nd->nd_procnum;
|
|
if ((nd->nd_flag & ND_NFSV4) &&
|
|
nd->nd_procnum != NFSPROC_NULL &&
|
|
nd->nd_procnum != NFSV4PROC_CBCOMPOUND)
|
|
procnum = NFSV4PROC_COMPOUND;
|
|
|
|
if (nmp != NULL) {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpcrequests);
|
|
|
|
/* Map the procnum to the old NFSv2 one, as required. */
|
|
if ((nd->nd_flag & ND_NFSV2) != 0) {
|
|
if (nd->nd_procnum < NFS_V3NPROCS)
|
|
procnum = nfsv2_procid[nd->nd_procnum];
|
|
else
|
|
procnum = NFSV2PROC_NOOP;
|
|
}
|
|
|
|
/*
|
|
* Now only used for the R_DONTRECOVER case, but until that is
|
|
* supported within the krpc code, I need to keep a queue of
|
|
* outstanding RPCs for nfsv4 client requests.
|
|
*/
|
|
if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND)
|
|
rep = malloc(sizeof(struct nfsreq),
|
|
M_NFSDREQ, M_WAITOK);
|
|
#ifdef KDTRACE_HOOKS
|
|
if (dtrace_nfscl_nfs234_start_probe != NULL) {
|
|
uint32_t probe_id;
|
|
int probe_procnum;
|
|
|
|
if (nd->nd_flag & ND_NFSV4) {
|
|
probe_id =
|
|
nfscl_nfs4_start_probes[nd->nd_procnum];
|
|
probe_procnum = nd->nd_procnum;
|
|
} else if (nd->nd_flag & ND_NFSV3) {
|
|
probe_id = nfscl_nfs3_start_probes[procnum];
|
|
probe_procnum = procnum;
|
|
} else {
|
|
probe_id =
|
|
nfscl_nfs2_start_probes[nd->nd_procnum];
|
|
probe_procnum = procnum;
|
|
}
|
|
if (probe_id != 0)
|
|
(dtrace_nfscl_nfs234_start_probe)
|
|
(probe_id, vp, nd->nd_mreq, cred,
|
|
probe_procnum);
|
|
}
|
|
#endif
|
|
}
|
|
freeslot = -1; /* Set to slot that needs to be free'd */
|
|
tryagain:
|
|
slot = -1; /* Slot that needs a sequence# increment. */
|
|
/*
|
|
* This timeout specifies when a new socket should be created,
|
|
* along with new xid values. For UDP, this should be done
|
|
* infrequently, since retransmits of RPC requests should normally
|
|
* use the same xid.
|
|
*/
|
|
if (nmp == NULL) {
|
|
if (clp == NULL) {
|
|
timo.tv_sec = NFSV4_UPCALLTIMEO;
|
|
timo.tv_usec = 0;
|
|
} else {
|
|
timo.tv_sec = NFSV4_CALLBACKTIMEO / 1000;
|
|
timo.tv_usec = NFSV4_CALLBACKTIMEO * 1000;
|
|
}
|
|
} else {
|
|
if (nrp->nr_sotype != SOCK_DGRAM) {
|
|
timo.tv_usec = 0;
|
|
if ((nmp->nm_flag & NFSMNT_NFSV4))
|
|
timo.tv_sec = INT_MAX;
|
|
else
|
|
timo.tv_sec = NFS_TCPTIMEO;
|
|
} else {
|
|
if (NFSHASSOFT(nmp)) {
|
|
/*
|
|
* CLSET_RETRIES is set to 2, so this should be
|
|
* half of the total timeout required.
|
|
*/
|
|
timeo = nmp->nm_retry * nmp->nm_timeo / 2;
|
|
if (timeo < 1)
|
|
timeo = 1;
|
|
timo.tv_sec = timeo / NFS_HZ;
|
|
timo.tv_usec = (timeo % NFS_HZ) * 1000000 /
|
|
NFS_HZ;
|
|
} else {
|
|
/* For UDP hard mounts, use a large value. */
|
|
timo.tv_sec = NFS_MAXTIMEO / NFS_HZ;
|
|
timo.tv_usec = 0;
|
|
}
|
|
}
|
|
|
|
if (rep != NULL) {
|
|
rep->r_flags = 0;
|
|
rep->r_nmp = nmp;
|
|
/*
|
|
* Chain request into list of outstanding requests.
|
|
*/
|
|
NFSLOCKREQ();
|
|
TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain);
|
|
NFSUNLOCKREQ();
|
|
}
|
|
}
|
|
|
|
nd->nd_mrep = NULL;
|
|
if (clp != NULL && sep != NULL)
|
|
stat = clnt_bck_call(nrp->nr_client, &ext, procnum,
|
|
nd->nd_mreq, &nd->nd_mrep, timo, sep->nfsess_xprt);
|
|
else if (nextconn_set)
|
|
/*
|
|
* When there are multiple TCP connections, send the
|
|
* RPCs with large messages on the alternate TCP
|
|
* connection(s) in a round robin fashion.
|
|
* The small RPC messages are sent on the default
|
|
* TCP connection because they do not require much
|
|
* network bandwidth and separating them from the
|
|
* large RPC messages avoids them getting "log jammed"
|
|
* behind several large RPC messages.
|
|
*/
|
|
stat = CLNT_CALL_MBUF(nmp->nm_aconn[nextconn],
|
|
&ext, procnum, nd->nd_mreq, &nd->nd_mrep, timo);
|
|
else
|
|
stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum,
|
|
nd->nd_mreq, &nd->nd_mrep, timo);
|
|
NFSCL_DEBUG(2, "clnt call=%d\n", stat);
|
|
|
|
if (rep != NULL) {
|
|
/*
|
|
* RPC done, unlink the request.
|
|
*/
|
|
NFSLOCKREQ();
|
|
TAILQ_REMOVE(&nfsd_reqq, rep, r_chain);
|
|
NFSUNLOCKREQ();
|
|
}
|
|
|
|
/*
|
|
* If there was a successful reply and a tprintf msg.
|
|
* tprintf a response.
|
|
*/
|
|
if (stat == RPC_SUCCESS) {
|
|
error = 0;
|
|
} else if (stat == RPC_TIMEDOUT) {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpctimeouts);
|
|
error = ETIMEDOUT;
|
|
} else if (stat == RPC_VERSMISMATCH) {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpcinvalid);
|
|
error = EOPNOTSUPP;
|
|
} else if (stat == RPC_PROGVERSMISMATCH) {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpcinvalid);
|
|
error = EPROTONOSUPPORT;
|
|
} else if (stat == RPC_CANTSEND || stat == RPC_CANTRECV ||
|
|
stat == RPC_SYSTEMERROR || stat == RPC_INTR) {
|
|
/* Check for a session slot that needs to be free'd. */
|
|
if ((nd->nd_flag & (ND_NFSV41 | ND_HASSLOTID)) ==
|
|
(ND_NFSV41 | ND_HASSLOTID) && nmp != NULL &&
|
|
nd->nd_procnum != NFSPROC_NULL) {
|
|
/*
|
|
* This should only occur when either the MDS or
|
|
* a client has an RPC against a DS fail.
|
|
* This happens because these cases use "soft"
|
|
* connections that can time out and fail.
|
|
* The slot used for this RPC is now in a
|
|
* non-deterministic state, but if the slot isn't
|
|
* free'd, threads can get stuck waiting for a slot.
|
|
*/
|
|
if (sep == NULL)
|
|
sep = nfsmnt_mdssession(nmp);
|
|
/*
|
|
* Bump the sequence# out of range, so that reuse of
|
|
* this slot will result in an NFSERR_SEQMISORDERED
|
|
* error and not a bogus cached RPC reply.
|
|
*/
|
|
mtx_lock(&sep->nfsess_mtx);
|
|
sep->nfsess_slotseq[nd->nd_slotid] += 10;
|
|
sep->nfsess_badslots |= (0x1ULL << nd->nd_slotid);
|
|
mtx_unlock(&sep->nfsess_mtx);
|
|
/* And free the slot. */
|
|
nfsv4_freeslot(sep, nd->nd_slotid, false);
|
|
}
|
|
if (stat == RPC_INTR)
|
|
error = EINTR;
|
|
else {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpcinvalid);
|
|
error = ENXIO;
|
|
}
|
|
} else {
|
|
NFSINCRGLOBAL(nfsstatsv1.rpcinvalid);
|
|
error = EACCES;
|
|
}
|
|
if (error) {
|
|
m_freem(nd->nd_mreq);
|
|
if (usegssname == 0)
|
|
AUTH_DESTROY(auth);
|
|
if (rep != NULL)
|
|
free(rep, M_NFSDREQ);
|
|
if (set_sigset)
|
|
newnfs_restore_sigmask(td, &oldset);
|
|
return (error);
|
|
}
|
|
|
|
KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n"));
|
|
|
|
/*
|
|
* Search for any mbufs that are not a multiple of 4 bytes long
|
|
* or with m_data not longword aligned.
|
|
* These could cause pointer alignment problems, so copy them to
|
|
* well aligned mbufs.
|
|
*/
|
|
newnfs_realign(&nd->nd_mrep, M_WAITOK);
|
|
nd->nd_md = nd->nd_mrep;
|
|
nd->nd_dpos = mtod(nd->nd_md, caddr_t);
|
|
nd->nd_repstat = 0;
|
|
if (nd->nd_procnum != NFSPROC_NULL &&
|
|
nd->nd_procnum != NFSV4PROC_CBNULL) {
|
|
/* If sep == NULL, set it to the default in nmp. */
|
|
if (sep == NULL && nmp != NULL)
|
|
sep = nfsmnt_mdssession(nmp);
|
|
/*
|
|
* and now the actual NFS xdr.
|
|
*/
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl);
|
|
if (nd->nd_repstat >= 10000)
|
|
NFSCL_DEBUG(1, "proc=%d reps=%d\n", (int)nd->nd_procnum,
|
|
(int)nd->nd_repstat);
|
|
|
|
/*
|
|
* Get rid of the tag, return count and SEQUENCE result for
|
|
* NFSv4.
|
|
*/
|
|
if ((nd->nd_flag & ND_NFSV4) != 0 && nd->nd_repstat !=
|
|
NFSERR_MINORVERMISMATCH) {
|
|
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;
|
|
NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
|
|
opcnt = fxdr_unsigned(int, *tl++);
|
|
i = fxdr_unsigned(int, *tl++);
|
|
j = fxdr_unsigned(int, *tl);
|
|
if (j >= 10000)
|
|
NFSCL_DEBUG(1, "fop=%d fst=%d\n", i, j);
|
|
/*
|
|
* If the first op is Sequence, free up the slot.
|
|
*/
|
|
if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j != 0) ||
|
|
(clp != NULL && i == NFSV4OP_CBSEQUENCE && j != 0)) {
|
|
NFSCL_DEBUG(1, "failed seq=%d\n", j);
|
|
if (sep != NULL && i == NFSV4OP_SEQUENCE &&
|
|
j == NFSERR_SEQMISORDERED) {
|
|
mtx_lock(&sep->nfsess_mtx);
|
|
sep->nfsess_badslots |=
|
|
(0x1ULL << nd->nd_slotid);
|
|
mtx_unlock(&sep->nfsess_mtx);
|
|
}
|
|
}
|
|
if (((nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) ||
|
|
(clp != NULL && i == NFSV4OP_CBSEQUENCE &&
|
|
j == 0)) && sep != NULL) {
|
|
if (i == NFSV4OP_SEQUENCE)
|
|
NFSM_DISSECT(tl, uint32_t *,
|
|
NFSX_V4SESSIONID +
|
|
5 * NFSX_UNSIGNED);
|
|
else
|
|
NFSM_DISSECT(tl, uint32_t *,
|
|
NFSX_V4SESSIONID +
|
|
4 * NFSX_UNSIGNED);
|
|
mtx_lock(&sep->nfsess_mtx);
|
|
if (bcmp(tl, sep->nfsess_sessionid,
|
|
NFSX_V4SESSIONID) == 0) {
|
|
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
|
|
retseq = fxdr_unsigned(uint32_t, *tl++);
|
|
slot = fxdr_unsigned(int, *tl++);
|
|
if ((nd->nd_flag & ND_HASSLOTID) != 0) {
|
|
if (slot >= NFSV4_SLOTS ||
|
|
(i == NFSV4OP_CBSEQUENCE &&
|
|
slot >= NFSV4_CBSLOTS)) {
|
|
printf("newnfs_request:"
|
|
" Bogus slot\n");
|
|
slot = nd->nd_slotid;
|
|
} else if (slot !=
|
|
nd->nd_slotid) {
|
|
printf("newnfs_request:"
|
|
" Wrong session "
|
|
"srvslot=%d "
|
|
"slot=%d\n", slot,
|
|
nd->nd_slotid);
|
|
if (i == NFSV4OP_SEQUENCE) {
|
|
/*
|
|
* Mark both slots as
|
|
* bad, because we do
|
|
* not know if the
|
|
* server has advanced
|
|
* the sequence# for
|
|
* either of them.
|
|
*/
|
|
sep->nfsess_badslots |=
|
|
(0x1ULL << slot);
|
|
sep->nfsess_badslots |=
|
|
(0x1ULL <<
|
|
nd->nd_slotid);
|
|
}
|
|
slot = nd->nd_slotid;
|
|
}
|
|
freeslot = slot;
|
|
} else if (slot != 0) {
|
|
printf("newnfs_request: Bad "
|
|
"session slot=%d\n", slot);
|
|
slot = 0;
|
|
}
|
|
if (retseq != sep->nfsess_slotseq[slot])
|
|
printf("retseq diff 0x%x\n",
|
|
retseq);
|
|
retval = fxdr_unsigned(uint32_t, *++tl);
|
|
if ((retval + 1) < sep->nfsess_foreslots
|
|
)
|
|
sep->nfsess_foreslots = (retval
|
|
+ 1);
|
|
else if ((retval + 1) >
|
|
sep->nfsess_foreslots)
|
|
sep->nfsess_foreslots = (retval
|
|
< 64) ? (retval + 1) : 64;
|
|
}
|
|
mtx_unlock(&sep->nfsess_mtx);
|
|
|
|
/* Grab the op and status for the next one. */
|
|
if (opcnt > 1) {
|
|
NFSM_DISSECT(tl, uint32_t *,
|
|
2 * NFSX_UNSIGNED);
|
|
i = fxdr_unsigned(int, *tl++);
|
|
j = fxdr_unsigned(int, *tl);
|
|
}
|
|
}
|
|
}
|
|
if (nd->nd_repstat != 0) {
|
|
if (nd->nd_repstat == NFSERR_BADSESSION &&
|
|
nmp != NULL && dssep == NULL &&
|
|
(nd->nd_flag & ND_NFSV41) != 0) {
|
|
/*
|
|
* If this is a client side MDS RPC, mark
|
|
* the MDS session defunct and initiate
|
|
* recovery, as required.
|
|
* The nfsess_defunct field is protected by
|
|
* the NFSLOCKMNT()/nm_mtx lock and not the
|
|
* nfsess_mtx lock to simplify its handling,
|
|
* for the MDS session. This lock is also
|
|
* sufficient for nfsess_sessionid, since it
|
|
* never changes in the structure.
|
|
*/
|
|
NFSCL_DEBUG(1, "Got badsession\n");
|
|
NFSLOCKCLSTATE();
|
|
NFSLOCKMNT(nmp);
|
|
sep = NFSMNT_MDSSESSION(nmp);
|
|
if (bcmp(sep->nfsess_sessionid, nd->nd_sequence,
|
|
NFSX_V4SESSIONID) == 0) {
|
|
printf("Initiate recovery. If server "
|
|
"has not rebooted, "
|
|
"check NFS clients for unique "
|
|
"/etc/hostid's\n");
|
|
/* Initiate recovery. */
|
|
sep->nfsess_defunct = 1;
|
|
NFSCL_DEBUG(1, "Marked defunct\n");
|
|
if (nmp->nm_clp != NULL) {
|
|
nmp->nm_clp->nfsc_flags |=
|
|
NFSCLFLAGS_RECOVER;
|
|
wakeup(nmp->nm_clp);
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
/*
|
|
* Sleep for up to 1sec waiting for a new
|
|
* session.
|
|
*/
|
|
mtx_sleep(&nmp->nm_sess, &nmp->nm_mtx, PZERO,
|
|
"nfsbadsess", hz);
|
|
/*
|
|
* Get the session again, in case a new one
|
|
* has been created during the sleep.
|
|
*/
|
|
sep = NFSMNT_MDSSESSION(nmp);
|
|
NFSUNLOCKMNT(nmp);
|
|
if ((nd->nd_flag & ND_LOOPBADSESS) != 0) {
|
|
reterr = nfsv4_sequencelookup(nmp, sep,
|
|
&slotpos, &maxslot, &slotseq,
|
|
sessionid, true);
|
|
if (reterr == 0) {
|
|
/* Fill in new session info. */
|
|
NFSCL_DEBUG(1,
|
|
"Filling in new sequence\n");
|
|
tl = nd->nd_sequence;
|
|
bcopy(sessionid, tl,
|
|
NFSX_V4SESSIONID);
|
|
tl += NFSX_V4SESSIONID /
|
|
NFSX_UNSIGNED;
|
|
*tl++ = txdr_unsigned(slotseq);
|
|
*tl++ = txdr_unsigned(slotpos);
|
|
*tl = txdr_unsigned(maxslot);
|
|
nd->nd_slotid = slotpos;
|
|
nd->nd_flag |= ND_HASSLOTID;
|
|
}
|
|
if (reterr == NFSERR_BADSESSION ||
|
|
reterr == 0) {
|
|
NFSCL_DEBUG(1,
|
|
"Badsession looping\n");
|
|
m_freem(nd->nd_mrep);
|
|
nd->nd_mrep = NULL;
|
|
goto tryagain;
|
|
}
|
|
nd->nd_repstat = reterr;
|
|
NFSCL_DEBUG(1, "Got err=%d\n", reterr);
|
|
}
|
|
}
|
|
/*
|
|
* When clp != NULL, it is a callback and all
|
|
* callback operations can be retried for NFSERR_DELAY.
|
|
*/
|
|
if (((nd->nd_repstat == NFSERR_DELAY ||
|
|
nd->nd_repstat == NFSERR_GRACE) &&
|
|
(nd->nd_flag & ND_NFSV4) && (clp != NULL ||
|
|
(nd->nd_procnum != NFSPROC_DELEGRETURN &&
|
|
nd->nd_procnum != NFSPROC_SETATTR &&
|
|
nd->nd_procnum != NFSPROC_READ &&
|
|
nd->nd_procnum != NFSPROC_READDS &&
|
|
nd->nd_procnum != NFSPROC_WRITE &&
|
|
nd->nd_procnum != NFSPROC_WRITEDS &&
|
|
nd->nd_procnum != NFSPROC_OPEN &&
|
|
nd->nd_procnum != NFSPROC_OPENLAYGET &&
|
|
nd->nd_procnum != NFSPROC_CREATE &&
|
|
nd->nd_procnum != NFSPROC_CREATELAYGET &&
|
|
nd->nd_procnum != NFSPROC_OPENCONFIRM &&
|
|
nd->nd_procnum != NFSPROC_OPENDOWNGRADE &&
|
|
nd->nd_procnum != NFSPROC_CLOSE &&
|
|
nd->nd_procnum != NFSPROC_LOCK &&
|
|
nd->nd_procnum != NFSPROC_LOCKU))) ||
|
|
(nd->nd_repstat == NFSERR_DELAY &&
|
|
(nd->nd_flag & ND_NFSV4) == 0) ||
|
|
nd->nd_repstat == NFSERR_RESOURCE) {
|
|
/* Clip at NFS_TRYLATERDEL. */
|
|
if (timespeccmp(&trylater_delay,
|
|
&nfs_trylater_max, >))
|
|
trylater_delay = nfs_trylater_max;
|
|
getnanouptime(&waituntil);
|
|
timespecadd(&waituntil, &trylater_delay,
|
|
&waituntil);
|
|
do {
|
|
nfs_catnap(PZERO, 0, "nfstry");
|
|
getnanouptime(&ts);
|
|
} while (timespeccmp(&ts, &waituntil, <));
|
|
timespecadd(&trylater_delay, &trylater_delay,
|
|
&trylater_delay); /* Double each time. */
|
|
if (slot != -1) {
|
|
mtx_lock(&sep->nfsess_mtx);
|
|
sep->nfsess_slotseq[slot]++;
|
|
*nd->nd_slotseq = txdr_unsigned(
|
|
sep->nfsess_slotseq[slot]);
|
|
mtx_unlock(&sep->nfsess_mtx);
|
|
}
|
|
m_freem(nd->nd_mrep);
|
|
nd->nd_mrep = NULL;
|
|
goto tryagain;
|
|
}
|
|
|
|
/*
|
|
* If the File Handle was stale, invalidate the
|
|
* lookup cache, just in case.
|
|
* (vp != NULL implies a client side call)
|
|
*/
|
|
if (nd->nd_repstat == ESTALE && vp != NULL) {
|
|
cache_purge(vp);
|
|
if (ncl_call_invalcaches != NULL)
|
|
(*ncl_call_invalcaches)(vp);
|
|
}
|
|
}
|
|
if ((nd->nd_flag & ND_NFSV4) != 0) {
|
|
/* Free the slot, as required. */
|
|
if (freeslot != -1)
|
|
nfsv4_freeslot(sep, freeslot, false);
|
|
/*
|
|
* If this op is Putfh, throw its results away.
|
|
*/
|
|
if (j >= 10000)
|
|
NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j);
|
|
if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) {
|
|
NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED);
|
|
i = fxdr_unsigned(int, *tl++);
|
|
j = fxdr_unsigned(int, *tl);
|
|
if (j >= 10000)
|
|
NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i,
|
|
j);
|
|
/*
|
|
* All Compounds that do an Op that must
|
|
* be in sequence consist of NFSV4OP_PUTFH
|
|
* followed by one of these. As such, we
|
|
* can determine if the seqid# should be
|
|
* incremented, here.
|
|
*/
|
|
if ((i == NFSV4OP_OPEN ||
|
|
i == NFSV4OP_OPENCONFIRM ||
|
|
i == NFSV4OP_OPENDOWNGRADE ||
|
|
i == NFSV4OP_CLOSE ||
|
|
i == NFSV4OP_LOCK ||
|
|
i == NFSV4OP_LOCKU) &&
|
|
(j == 0 ||
|
|
(j != NFSERR_STALECLIENTID &&
|
|
j != NFSERR_STALESTATEID &&
|
|
j != NFSERR_BADSTATEID &&
|
|
j != NFSERR_BADSEQID &&
|
|
j != NFSERR_BADXDR &&
|
|
j != NFSERR_RESOURCE &&
|
|
j != NFSERR_NOFILEHANDLE)))
|
|
nd->nd_flag |= ND_INCRSEQID;
|
|
}
|
|
/*
|
|
* If this op's status is non-zero, mark
|
|
* that there is no more data to process.
|
|
* The exception is Setattr, which always has xdr
|
|
* when it has failed.
|
|
*/
|
|
if (j != 0 && i != NFSV4OP_SETATTR)
|
|
nd->nd_flag |= ND_NOMOREDATA;
|
|
|
|
/*
|
|
* If R_DONTRECOVER is set, replace the stale error
|
|
* reply, so that recovery isn't initiated.
|
|
*/
|
|
if ((nd->nd_repstat == NFSERR_STALECLIENTID ||
|
|
nd->nd_repstat == NFSERR_BADSESSION ||
|
|
nd->nd_repstat == NFSERR_STALESTATEID) &&
|
|
rep != NULL && (rep->r_flags & R_DONTRECOVER))
|
|
nd->nd_repstat = NFSERR_STALEDONTRECOVER;
|
|
}
|
|
}
|
|
|
|
#ifdef KDTRACE_HOOKS
|
|
if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) {
|
|
uint32_t probe_id;
|
|
int probe_procnum;
|
|
|
|
if (nd->nd_flag & ND_NFSV4) {
|
|
probe_id = nfscl_nfs4_done_probes[nd->nd_procnum];
|
|
probe_procnum = nd->nd_procnum;
|
|
} else if (nd->nd_flag & ND_NFSV3) {
|
|
probe_id = nfscl_nfs3_done_probes[procnum];
|
|
probe_procnum = procnum;
|
|
} else {
|
|
probe_id = nfscl_nfs2_done_probes[nd->nd_procnum];
|
|
probe_procnum = procnum;
|
|
}
|
|
if (probe_id != 0)
|
|
(dtrace_nfscl_nfs234_done_probe)(probe_id, vp,
|
|
nd->nd_mreq, cred, probe_procnum, 0);
|
|
}
|
|
#endif
|
|
|
|
m_freem(nd->nd_mreq);
|
|
if (usegssname == 0)
|
|
AUTH_DESTROY(auth);
|
|
if (rep != NULL)
|
|
free(rep, M_NFSDREQ);
|
|
if (set_sigset)
|
|
newnfs_restore_sigmask(td, &oldset);
|
|
return (0);
|
|
nfsmout:
|
|
m_freem(nd->nd_mrep);
|
|
m_freem(nd->nd_mreq);
|
|
if (usegssname == 0)
|
|
AUTH_DESTROY(auth);
|
|
if (rep != NULL)
|
|
free(rep, M_NFSDREQ);
|
|
if (set_sigset)
|
|
newnfs_restore_sigmask(td, &oldset);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Mark all of an nfs mount's outstanding requests with R_SOFTTERM and
|
|
* wait for all requests to complete. This is used by forced unmounts
|
|
* to terminate any outstanding RPCs.
|
|
*/
|
|
int
|
|
newnfs_nmcancelreqs(struct nfsmount *nmp)
|
|
{
|
|
struct nfsclds *dsp;
|
|
struct __rpc_client *cl;
|
|
int i;
|
|
|
|
if (nmp->nm_sockreq.nr_client != NULL)
|
|
CLNT_CLOSE(nmp->nm_sockreq.nr_client);
|
|
for (i = 0; i < nmp->nm_aconnect; i++)
|
|
if (nmp->nm_aconn[i] != NULL)
|
|
CLNT_CLOSE(nmp->nm_aconn[i]);
|
|
lookformore:
|
|
NFSLOCKMNT(nmp);
|
|
TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
|
|
NFSLOCKDS(dsp);
|
|
if (dsp != TAILQ_FIRST(&nmp->nm_sess) &&
|
|
(dsp->nfsclds_flags & NFSCLDS_CLOSED) == 0 &&
|
|
dsp->nfsclds_sockp != NULL &&
|
|
dsp->nfsclds_sockp->nr_client != NULL) {
|
|
dsp->nfsclds_flags |= NFSCLDS_CLOSED;
|
|
cl = dsp->nfsclds_sockp->nr_client;
|
|
NFSUNLOCKDS(dsp);
|
|
NFSUNLOCKMNT(nmp);
|
|
CLNT_CLOSE(cl);
|
|
goto lookformore;
|
|
}
|
|
NFSUNLOCKDS(dsp);
|
|
}
|
|
NFSUNLOCKMNT(nmp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Any signal that can interrupt an NFS operation in an intr mount
|
|
* should be added to this set. SIGSTOP and SIGKILL cannot be masked.
|
|
*/
|
|
int newnfs_sig_set[] = {
|
|
SIGINT,
|
|
SIGTERM,
|
|
SIGHUP,
|
|
SIGKILL,
|
|
SIGQUIT
|
|
};
|
|
|
|
/*
|
|
* Check to see if one of the signals in our subset is pending on
|
|
* the process (in an intr mount).
|
|
*/
|
|
static int
|
|
nfs_sig_pending(sigset_t set)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0 ; i < nitems(newnfs_sig_set); i++)
|
|
if (SIGISMEMBER(set, newnfs_sig_set[i]))
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* The set/restore sigmask functions are used to (temporarily) overwrite
|
|
* the thread td_sigmask during an RPC call (for example). These are also
|
|
* used in other places in the NFS client that might tsleep().
|
|
*/
|
|
void
|
|
newnfs_set_sigmask(struct thread *td, sigset_t *oldset)
|
|
{
|
|
sigset_t newset;
|
|
int i;
|
|
struct proc *p;
|
|
|
|
SIGFILLSET(newset);
|
|
if (td == NULL)
|
|
td = curthread; /* XXX */
|
|
p = td->td_proc;
|
|
/* Remove the NFS set of signals from newset */
|
|
PROC_LOCK(p);
|
|
mtx_lock(&p->p_sigacts->ps_mtx);
|
|
for (i = 0 ; i < nitems(newnfs_sig_set); i++) {
|
|
/*
|
|
* But make sure we leave the ones already masked
|
|
* by the process, ie. remove the signal from the
|
|
* temporary signalmask only if it wasn't already
|
|
* in p_sigmask.
|
|
*/
|
|
if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) &&
|
|
!SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i]))
|
|
SIGDELSET(newset, newnfs_sig_set[i]);
|
|
}
|
|
mtx_unlock(&p->p_sigacts->ps_mtx);
|
|
kern_sigprocmask(td, SIG_SETMASK, &newset, oldset,
|
|
SIGPROCMASK_PROC_LOCKED);
|
|
PROC_UNLOCK(p);
|
|
}
|
|
|
|
void
|
|
newnfs_restore_sigmask(struct thread *td, sigset_t *set)
|
|
{
|
|
if (td == NULL)
|
|
td = curthread; /* XXX */
|
|
kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* NFS wrapper to msleep(), that shoves a new p_sigmask and restores the
|
|
* old one after msleep() returns.
|
|
*/
|
|
int
|
|
newnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo)
|
|
{
|
|
sigset_t oldset;
|
|
int error;
|
|
|
|
if ((priority & PCATCH) == 0)
|
|
return msleep(ident, mtx, priority, wmesg, timo);
|
|
if (td == NULL)
|
|
td = curthread; /* XXX */
|
|
newnfs_set_sigmask(td, &oldset);
|
|
error = msleep(ident, mtx, priority, wmesg, timo);
|
|
newnfs_restore_sigmask(td, &oldset);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Test for a termination condition pending on the process.
|
|
* This is used for NFSMNT_INT mounts.
|
|
*/
|
|
int
|
|
newnfs_sigintr(struct nfsmount *nmp, struct thread *td)
|
|
{
|
|
struct proc *p;
|
|
sigset_t tmpset;
|
|
|
|
/* Terminate all requests while attempting a forced unmount. */
|
|
if (NFSCL_FORCEDISM(nmp->nm_mountp))
|
|
return (EIO);
|
|
if (!(nmp->nm_flag & NFSMNT_INT))
|
|
return (0);
|
|
if (td == NULL)
|
|
return (0);
|
|
p = td->td_proc;
|
|
PROC_LOCK(p);
|
|
tmpset = p->p_siglist;
|
|
SIGSETOR(tmpset, td->td_siglist);
|
|
SIGSETNAND(tmpset, td->td_sigmask);
|
|
mtx_lock(&p->p_sigacts->ps_mtx);
|
|
SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
|
|
mtx_unlock(&p->p_sigacts->ps_mtx);
|
|
if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist))
|
|
&& nfs_sig_pending(tmpset)) {
|
|
PROC_UNLOCK(p);
|
|
return (EINTR);
|
|
}
|
|
PROC_UNLOCK(p);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nfs_msg(struct thread *td, const char *server, const char *msg, int error)
|
|
{
|
|
struct proc *p;
|
|
|
|
p = td ? td->td_proc : NULL;
|
|
if (error) {
|
|
tprintf(p, LOG_INFO, "nfs server %s: %s, error %d\n",
|
|
server, msg, error);
|
|
} else {
|
|
tprintf(p, LOG_INFO, "nfs server %s: %s\n", server, msg);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg,
|
|
int error, int flags)
|
|
{
|
|
if (nmp == NULL)
|
|
return;
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) {
|
|
nmp->nm_state |= NFSSTA_TIMEO;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
|
|
VQ_NOTRESP, 0);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) {
|
|
nmp->nm_state |= NFSSTA_LOCKTIMEO;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
|
|
VQ_NOTRESPLOCK, 0);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error);
|
|
}
|
|
|
|
static void
|
|
nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg,
|
|
int flags, int tprintfmsg)
|
|
{
|
|
if (nmp == NULL)
|
|
return;
|
|
if (tprintfmsg) {
|
|
nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0);
|
|
}
|
|
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) {
|
|
nmp->nm_state &= ~NFSSTA_TIMEO;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
|
|
VQ_NOTRESP, 1);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) {
|
|
nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
|
|
VQ_NOTRESPLOCK, 1);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
}
|