1191783Srmacklem/*- 2191783Srmacklem * Copyright (c) 1989, 1991, 1993, 1995 3191783Srmacklem * The Regents of the University of California. All rights reserved. 4191783Srmacklem * 5191783Srmacklem * This code is derived from software contributed to Berkeley by 6191783Srmacklem * Rick Macklem at The University of Guelph. 7191783Srmacklem * 8191783Srmacklem * Redistribution and use in source and binary forms, with or without 9191783Srmacklem * modification, are permitted provided that the following conditions 10191783Srmacklem * are met: 11191783Srmacklem * 1. Redistributions of source code must retain the above copyright 12191783Srmacklem * notice, this list of conditions and the following disclaimer. 13191783Srmacklem * 2. Redistributions in binary form must reproduce the above copyright 14191783Srmacklem * notice, this list of conditions and the following disclaimer in the 15191783Srmacklem * documentation and/or other materials provided with the distribution. 16191783Srmacklem * 4. Neither the name of the University nor the names of its contributors 17191783Srmacklem * may be used to endorse or promote products derived from this software 18191783Srmacklem * without specific prior written permission. 19191783Srmacklem * 20191783Srmacklem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21191783Srmacklem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22191783Srmacklem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23191783Srmacklem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24191783Srmacklem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25191783Srmacklem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26191783Srmacklem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27191783Srmacklem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28191783Srmacklem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29191783Srmacklem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30191783Srmacklem * SUCH DAMAGE. 31191783Srmacklem * 32191783Srmacklem */ 33191783Srmacklem 34191783Srmacklem#include <sys/cdefs.h> 35191783Srmacklem__FBSDID("$FreeBSD: stable/10/sys/fs/nfs/nfs_commonkrpc.c 338308 2018-08-24 22:48:19Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Socket operations for use by nfs 39191783Srmacklem */ 40191783Srmacklem 41223280Srmacklem#include "opt_kdtrace.h" 42191783Srmacklem#include "opt_kgssapi.h" 43191783Srmacklem#include "opt_nfs.h" 44191783Srmacklem 45191783Srmacklem#include <sys/param.h> 46191783Srmacklem#include <sys/systm.h> 47191783Srmacklem#include <sys/kernel.h> 48191783Srmacklem#include <sys/limits.h> 49191783Srmacklem#include <sys/lock.h> 50191783Srmacklem#include <sys/malloc.h> 51191783Srmacklem#include <sys/mbuf.h> 52191783Srmacklem#include <sys/mount.h> 53191783Srmacklem#include <sys/mutex.h> 54191783Srmacklem#include <sys/proc.h> 55191783Srmacklem#include <sys/signalvar.h> 56191783Srmacklem#include <sys/syscallsubr.h> 57191783Srmacklem#include <sys/sysctl.h> 58191783Srmacklem#include <sys/syslog.h> 59191783Srmacklem#include <sys/vnode.h> 60191783Srmacklem 61191783Srmacklem#include <rpc/rpc.h> 62269398Srmacklem#include <rpc/krpc.h> 63191783Srmacklem 64191783Srmacklem#include <kgssapi/krb5/kcrypto.h> 65191783Srmacklem 66191783Srmacklem#include <fs/nfs/nfsport.h> 67191783Srmacklem 68223280Srmacklem#ifdef KDTRACE_HOOKS 69223280Srmacklem#include <sys/dtrace_bsd.h> 70223280Srmacklem 71223280Srmacklemdtrace_nfsclient_nfs23_start_probe_func_t 72223280Srmacklem dtrace_nfscl_nfs234_start_probe; 73223280Srmacklem 74223280Srmacklemdtrace_nfsclient_nfs23_done_probe_func_t 75223280Srmacklem dtrace_nfscl_nfs234_done_probe; 76223280Srmacklem 77223280Srmacklem/* 78223280Srmacklem * Registered probes by RPC type. 79223280Srmacklem */ 80244042Srmacklemuint32_t nfscl_nfs2_start_probes[NFSV41_NPROCS + 1]; 81244042Srmacklemuint32_t nfscl_nfs2_done_probes[NFSV41_NPROCS + 1]; 82223280Srmacklem 83244042Srmacklemuint32_t nfscl_nfs3_start_probes[NFSV41_NPROCS + 1]; 84244042Srmacklemuint32_t nfscl_nfs3_done_probes[NFSV41_NPROCS + 1]; 85223280Srmacklem 86244042Srmacklemuint32_t nfscl_nfs4_start_probes[NFSV41_NPROCS + 1]; 87244042Srmacklemuint32_t nfscl_nfs4_done_probes[NFSV41_NPROCS + 1]; 88223280Srmacklem#endif 89223280Srmacklem 90191783SrmacklemNFSSTATESPINLOCK; 91191783SrmacklemNFSREQSPINLOCK; 92244042SrmacklemNFSDLOCKMUTEX; 93317404SrmacklemNFSCLSTATEMUTEX; 94306663Srmacklemextern struct nfsstats newnfsstats; 95191783Srmacklemextern struct nfsreqhead nfsd_reqq; 96191783Srmacklemextern int nfscl_ticks; 97191783Srmacklemextern void (*ncl_call_invalcaches)(struct vnode *); 98244042Srmacklemextern int nfs_numnfscbd; 99244042Srmacklemextern int nfscl_debuglevel; 100191783Srmacklem 101244042SrmacklemSVCPOOL *nfscbd_pool; 102191783Srmacklemstatic int nfsrv_gsscallbackson = 0; 103191783Srmacklemstatic int nfs_bufpackets = 4; 104191783Srmacklemstatic int nfs_reconnects; 105191783Srmacklemstatic int nfs3_jukebox_delay = 10; 106191783Srmacklemstatic int nfs_skip_wcc_data_onerr = 1; 107191783Srmacklem 108221973SrmacklemSYSCTL_DECL(_vfs_nfs); 109191783Srmacklem 110221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0, 111191783Srmacklem "Buffer reservation size 2 < x < 64"); 112221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0, 113191783Srmacklem "Number of times the nfs client has had to reconnect"); 114221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0, 115191783Srmacklem "Number of seconds to delay a retry after receiving EJUKEBOX"); 116221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0, 117191783Srmacklem "Disable weak cache consistency checking when server returns an error"); 118191783Srmacklem 119191783Srmacklemstatic void nfs_down(struct nfsmount *, struct thread *, const char *, 120191783Srmacklem int, int); 121191783Srmacklemstatic void nfs_up(struct nfsmount *, struct thread *, const char *, 122191783Srmacklem int, int); 123191783Srmacklemstatic int nfs_msg(struct thread *, const char *, const char *, int); 124191783Srmacklem 125191783Srmacklemstruct nfs_cached_auth { 126191783Srmacklem int ca_refs; /* refcount, including 1 from the cache */ 127191783Srmacklem uid_t ca_uid; /* uid that corresponds to this auth */ 128191783Srmacklem AUTH *ca_auth; /* RPC auth handle */ 129191783Srmacklem}; 130191783Srmacklem 131207764Srmacklemstatic int nfsv2_procid[NFS_V3NPROCS] = { 132207764Srmacklem NFSV2PROC_NULL, 133207764Srmacklem NFSV2PROC_GETATTR, 134207764Srmacklem NFSV2PROC_SETATTR, 135207764Srmacklem NFSV2PROC_LOOKUP, 136207764Srmacklem NFSV2PROC_NOOP, 137207764Srmacklem NFSV2PROC_READLINK, 138207764Srmacklem NFSV2PROC_READ, 139207764Srmacklem NFSV2PROC_WRITE, 140207764Srmacklem NFSV2PROC_CREATE, 141207764Srmacklem NFSV2PROC_MKDIR, 142207764Srmacklem NFSV2PROC_SYMLINK, 143207764Srmacklem NFSV2PROC_CREATE, 144207764Srmacklem NFSV2PROC_REMOVE, 145207764Srmacklem NFSV2PROC_RMDIR, 146207764Srmacklem NFSV2PROC_RENAME, 147207764Srmacklem NFSV2PROC_LINK, 148207764Srmacklem NFSV2PROC_READDIR, 149207764Srmacklem NFSV2PROC_NOOP, 150207764Srmacklem NFSV2PROC_STATFS, 151207764Srmacklem NFSV2PROC_NOOP, 152207764Srmacklem NFSV2PROC_NOOP, 153207764Srmacklem NFSV2PROC_NOOP, 154207764Srmacklem}; 155207764Srmacklem 156191783Srmacklem/* 157191783Srmacklem * Initialize sockets and congestion for a new NFS connection. 158191783Srmacklem * We do not free the sockaddr if error. 159191783Srmacklem */ 160191783Srmacklemint 161191783Srmacklemnewnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp, 162191783Srmacklem struct ucred *cred, NFSPROC_T *p, int callback_retry_mult) 163191783Srmacklem{ 164191783Srmacklem int rcvreserve, sndreserve; 165320637Srmacklem int pktscale, pktscalesav; 166191783Srmacklem struct sockaddr *saddr; 167191783Srmacklem struct ucred *origcred; 168191783Srmacklem CLIENT *client; 169191783Srmacklem struct netconfig *nconf; 170191783Srmacklem struct socket *so; 171224086Szack int one = 1, retries, error = 0; 172191783Srmacklem struct thread *td = curthread; 173244042Srmacklem SVCXPRT *xprt; 174228757Srmacklem struct timeval timo; 175191783Srmacklem 176191783Srmacklem /* 177191783Srmacklem * We need to establish the socket using the credentials of 178191783Srmacklem * the mountpoint. Some parts of this process (such as 179191783Srmacklem * sobind() and soconnect()) will use the curent thread's 180191783Srmacklem * credential instead of the socket credential. To work 181191783Srmacklem * around this, temporarily change the current thread's 182191783Srmacklem * credential to that of the mountpoint. 183191783Srmacklem * 184191783Srmacklem * XXX: It would be better to explicitly pass the correct 185191783Srmacklem * credential to sobind() and soconnect(). 186191783Srmacklem */ 187191783Srmacklem origcred = td->td_ucred; 188191783Srmacklem 189191783Srmacklem /* 190191783Srmacklem * Use the credential in nr_cred, if not NULL. 191191783Srmacklem */ 192191783Srmacklem if (nrp->nr_cred != NULL) 193191783Srmacklem td->td_ucred = nrp->nr_cred; 194191783Srmacklem else 195191783Srmacklem td->td_ucred = cred; 196191783Srmacklem saddr = nrp->nr_nam; 197191783Srmacklem 198191783Srmacklem if (saddr->sa_family == AF_INET) 199191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 200191783Srmacklem nconf = getnetconfigent("udp"); 201191783Srmacklem else 202191783Srmacklem nconf = getnetconfigent("tcp"); 203191783Srmacklem else 204191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 205191783Srmacklem nconf = getnetconfigent("udp6"); 206191783Srmacklem else 207191783Srmacklem nconf = getnetconfigent("tcp6"); 208191783Srmacklem 209191783Srmacklem pktscale = nfs_bufpackets; 210191783Srmacklem if (pktscale < 2) 211191783Srmacklem pktscale = 2; 212191783Srmacklem if (pktscale > 64) 213191783Srmacklem pktscale = 64; 214320637Srmacklem pktscalesav = pktscale; 215191783Srmacklem /* 216191783Srmacklem * soreserve() can fail if sb_max is too small, so shrink pktscale 217191783Srmacklem * and try again if there is an error. 218191783Srmacklem * Print a log message suggesting increasing sb_max. 219191783Srmacklem * Creating a socket and doing this is necessary since, if the 220191783Srmacklem * reservation sizes are too large and will make soreserve() fail, 221191783Srmacklem * the connection will work until a large send is attempted and 222191783Srmacklem * then it will loop in the krpc code. 223191783Srmacklem */ 224191783Srmacklem so = NULL; 225191783Srmacklem saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *); 226191783Srmacklem error = socreate(saddr->sa_family, &so, nrp->nr_sotype, 227191783Srmacklem nrp->nr_soproto, td->td_ucred, td); 228191783Srmacklem if (error) { 229191783Srmacklem td->td_ucred = origcred; 230224086Szack goto out; 231191783Srmacklem } 232191783Srmacklem do { 233320637Srmacklem if (error != 0 && pktscale > 2) { 234320637Srmacklem if (nmp != NULL && nrp->nr_sotype == SOCK_STREAM && 235320637Srmacklem pktscale == pktscalesav) 236320637Srmacklem printf("Consider increasing kern.ipc.maxsockbuf\n"); 237191783Srmacklem pktscale--; 238320637Srmacklem } 239191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) { 240191783Srmacklem if (nmp != NULL) { 241191783Srmacklem sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 242191783Srmacklem pktscale; 243191783Srmacklem rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 244191783Srmacklem pktscale; 245191783Srmacklem } else { 246191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 247191783Srmacklem } 248191783Srmacklem } else { 249191783Srmacklem if (nrp->nr_sotype != SOCK_STREAM) 250191783Srmacklem panic("nfscon sotype"); 251191783Srmacklem if (nmp != NULL) { 252320637Srmacklem sndreserve = (NFS_MAXBSIZE + NFS_MAXXDR + 253191783Srmacklem sizeof (u_int32_t)) * pktscale; 254320637Srmacklem rcvreserve = (NFS_MAXBSIZE + NFS_MAXXDR + 255191783Srmacklem sizeof (u_int32_t)) * pktscale; 256191783Srmacklem } else { 257191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 258191783Srmacklem } 259191783Srmacklem } 260191783Srmacklem error = soreserve(so, sndreserve, rcvreserve); 261320637Srmacklem if (error != 0 && nmp != NULL && nrp->nr_sotype == SOCK_STREAM && 262320637Srmacklem pktscale <= 2) 263320637Srmacklem printf("Must increase kern.ipc.maxsockbuf or reduce" 264320637Srmacklem " rsize, wsize\n"); 265191783Srmacklem } while (error != 0 && pktscale > 2); 266191783Srmacklem soclose(so); 267191783Srmacklem if (error) { 268191783Srmacklem td->td_ucred = origcred; 269224086Szack goto out; 270191783Srmacklem } 271191783Srmacklem 272191783Srmacklem client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog, 273191783Srmacklem nrp->nr_vers, sndreserve, rcvreserve); 274191783Srmacklem CLNT_CONTROL(client, CLSET_WAITCHAN, "newnfsreq"); 275191783Srmacklem if (nmp != NULL) { 276191783Srmacklem if ((nmp->nm_flag & NFSMNT_INT)) 277191783Srmacklem CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one); 278191783Srmacklem if ((nmp->nm_flag & NFSMNT_RESVPORT)) 279191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 280228757Srmacklem if (NFSHASSOFT(nmp)) { 281228757Srmacklem if (nmp->nm_sotype == SOCK_DGRAM) 282228757Srmacklem /* 283228757Srmacklem * For UDP, the large timeout for a reconnect 284228757Srmacklem * will be set to "nm_retry * nm_timeo / 2", so 285228757Srmacklem * we only want to do 2 reconnect timeout 286228757Srmacklem * retries. 287228757Srmacklem */ 288228757Srmacklem retries = 2; 289228757Srmacklem else 290228757Srmacklem retries = nmp->nm_retry; 291228757Srmacklem } else 292191783Srmacklem retries = INT_MAX; 293317927Srmacklem /* cred == NULL for DS connects. */ 294317927Srmacklem if (NFSHASNFSV4N(nmp) && cred != NULL) { 295244042Srmacklem /* 296244042Srmacklem * Make sure the nfscbd_pool doesn't get destroyed 297244042Srmacklem * while doing this. 298244042Srmacklem */ 299244042Srmacklem NFSD_LOCK(); 300244042Srmacklem if (nfs_numnfscbd > 0) { 301244042Srmacklem nfs_numnfscbd++; 302244042Srmacklem NFSD_UNLOCK(); 303244042Srmacklem xprt = svc_vc_create_backchannel(nfscbd_pool); 304244042Srmacklem CLNT_CONTROL(client, CLSET_BACKCHANNEL, xprt); 305244042Srmacklem NFSD_LOCK(); 306244042Srmacklem nfs_numnfscbd--; 307244042Srmacklem if (nfs_numnfscbd == 0) 308244042Srmacklem wakeup(&nfs_numnfscbd); 309244042Srmacklem } 310244042Srmacklem NFSD_UNLOCK(); 311244042Srmacklem } 312191783Srmacklem } else { 313191783Srmacklem /* 314191783Srmacklem * Three cases: 315191783Srmacklem * - Null RPC callback to client 316191783Srmacklem * - Non-Null RPC callback to client, wait a little longer 317191783Srmacklem * - upcalls to nfsuserd and gssd (clp == NULL) 318191783Srmacklem */ 319191783Srmacklem if (callback_retry_mult == 0) { 320191783Srmacklem retries = NFSV4_UPCALLRETRY; 321191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 322191783Srmacklem } else { 323191783Srmacklem retries = NFSV4_CALLBACKRETRY * callback_retry_mult; 324191783Srmacklem } 325191783Srmacklem } 326191783Srmacklem CLNT_CONTROL(client, CLSET_RETRIES, &retries); 327191783Srmacklem 328228757Srmacklem if (nmp != NULL) { 329228757Srmacklem /* 330228757Srmacklem * For UDP, there are 2 timeouts: 331228757Srmacklem * - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer 332228757Srmacklem * that does a retransmit of an RPC request using the same 333228757Srmacklem * socket and xid. This is what you normally want to do, 334228757Srmacklem * since NFS servers depend on "same xid" for their 335228757Srmacklem * Duplicate Request Cache. 336228757Srmacklem * - timeout specified in CLNT_CALL_MBUF(), which specifies when 337228757Srmacklem * retransmits on the same socket should fail and a fresh 338228757Srmacklem * socket created. Each of these timeouts counts as one 339228757Srmacklem * CLSET_RETRIES as set above. 340228757Srmacklem * Set the initial retransmit timeout for UDP. This timeout 341228757Srmacklem * doesn't exist for TCP and the following call just fails, 342228757Srmacklem * which is ok. 343228757Srmacklem */ 344228757Srmacklem timo.tv_sec = nmp->nm_timeo / NFS_HZ; 345228757Srmacklem timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ; 346228757Srmacklem CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo); 347228757Srmacklem } 348228757Srmacklem 349191783Srmacklem mtx_lock(&nrp->nr_mtx); 350191783Srmacklem if (nrp->nr_client != NULL) { 351259207Srmacklem mtx_unlock(&nrp->nr_mtx); 352191783Srmacklem /* 353191783Srmacklem * Someone else already connected. 354191783Srmacklem */ 355191783Srmacklem CLNT_RELEASE(client); 356191783Srmacklem } else { 357191783Srmacklem nrp->nr_client = client; 358259207Srmacklem /* 359259207Srmacklem * Protocols that do not require connections may be optionally 360259207Srmacklem * left unconnected for servers that reply from a port other 361259207Srmacklem * than NFS_PORT. 362259207Srmacklem */ 363259207Srmacklem if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) { 364259207Srmacklem mtx_unlock(&nrp->nr_mtx); 365259207Srmacklem CLNT_CONTROL(client, CLSET_CONNECT, &one); 366259207Srmacklem } else 367259207Srmacklem mtx_unlock(&nrp->nr_mtx); 368191783Srmacklem } 369191783Srmacklem 370191783Srmacklem 371191783Srmacklem /* Restore current thread's credentials. */ 372191783Srmacklem td->td_ucred = origcred; 373224086Szack 374224086Szackout: 375224086Szack NFSEXITCODE(error); 376224086Szack return (error); 377191783Srmacklem} 378191783Srmacklem 379191783Srmacklem/* 380191783Srmacklem * NFS disconnect. Clean up and unlink. 381191783Srmacklem */ 382191783Srmacklemvoid 383191783Srmacklemnewnfs_disconnect(struct nfssockreq *nrp) 384191783Srmacklem{ 385191783Srmacklem CLIENT *client; 386191783Srmacklem 387191783Srmacklem mtx_lock(&nrp->nr_mtx); 388191783Srmacklem if (nrp->nr_client != NULL) { 389191783Srmacklem client = nrp->nr_client; 390191783Srmacklem nrp->nr_client = NULL; 391191783Srmacklem mtx_unlock(&nrp->nr_mtx); 392223309Srmacklem rpc_gss_secpurge_call(client); 393191783Srmacklem CLNT_CLOSE(client); 394191783Srmacklem CLNT_RELEASE(client); 395191783Srmacklem } else { 396191783Srmacklem mtx_unlock(&nrp->nr_mtx); 397191783Srmacklem } 398191783Srmacklem} 399191783Srmacklem 400191783Srmacklemstatic AUTH * 401191783Srmacklemnfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal, 402191783Srmacklem char *srv_principal, gss_OID mech_oid, struct ucred *cred) 403191783Srmacklem{ 404191783Srmacklem rpc_gss_service_t svc; 405191783Srmacklem AUTH *auth; 406191783Srmacklem 407191783Srmacklem switch (secflavour) { 408191783Srmacklem case RPCSEC_GSS_KRB5: 409191783Srmacklem case RPCSEC_GSS_KRB5I: 410191783Srmacklem case RPCSEC_GSS_KRB5P: 411191783Srmacklem if (!mech_oid) { 412223309Srmacklem if (!rpc_gss_mech_to_oid_call("kerberosv5", &mech_oid)) 413191783Srmacklem return (NULL); 414191783Srmacklem } 415191783Srmacklem if (secflavour == RPCSEC_GSS_KRB5) 416191783Srmacklem svc = rpc_gss_svc_none; 417191783Srmacklem else if (secflavour == RPCSEC_GSS_KRB5I) 418191783Srmacklem svc = rpc_gss_svc_integrity; 419191783Srmacklem else 420191783Srmacklem svc = rpc_gss_svc_privacy; 421191783Srmacklem 422192616Srmacklem if (clnt_principal == NULL) 423223309Srmacklem auth = rpc_gss_secfind_call(nrp->nr_client, cred, 424192616Srmacklem srv_principal, mech_oid, svc); 425253049Srmacklem else { 426253049Srmacklem auth = rpc_gss_seccreate_call(nrp->nr_client, cred, 427253049Srmacklem clnt_principal, srv_principal, "kerberosv5", 428253049Srmacklem svc, NULL, NULL, NULL); 429253049Srmacklem return (auth); 430253049Srmacklem } 431192675Srmacklem if (auth != NULL) 432192675Srmacklem return (auth); 433192675Srmacklem /* fallthrough */ 434191783Srmacklem case AUTH_SYS: 435191783Srmacklem default: 436191783Srmacklem return (authunix_create(cred)); 437191783Srmacklem 438191783Srmacklem } 439191783Srmacklem} 440191783Srmacklem 441191783Srmacklem/* 442191783Srmacklem * Callback from the RPC code to generate up/down notifications. 443191783Srmacklem */ 444191783Srmacklem 445191783Srmacklemstruct nfs_feedback_arg { 446191783Srmacklem struct nfsmount *nf_mount; 447191783Srmacklem int nf_lastmsg; /* last tprintf */ 448191783Srmacklem int nf_tprintfmsg; 449191783Srmacklem struct thread *nf_td; 450191783Srmacklem}; 451191783Srmacklem 452191783Srmacklemstatic void 453191783Srmacklemnfs_feedback(int type, int proc, void *arg) 454191783Srmacklem{ 455191783Srmacklem struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg; 456191783Srmacklem struct nfsmount *nmp = nf->nf_mount; 457245909Sjhb time_t now; 458191783Srmacklem 459191783Srmacklem switch (type) { 460191783Srmacklem case FEEDBACK_REXMIT2: 461191783Srmacklem case FEEDBACK_RECONNECT: 462245909Sjhb now = NFSD_MONOSEC; 463245909Sjhb if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now) { 464191783Srmacklem nfs_down(nmp, nf->nf_td, 465191783Srmacklem "not responding", 0, NFSSTA_TIMEO); 466191783Srmacklem nf->nf_tprintfmsg = TRUE; 467245909Sjhb nf->nf_lastmsg = now; 468191783Srmacklem } 469191783Srmacklem break; 470191783Srmacklem 471191783Srmacklem case FEEDBACK_OK: 472191783Srmacklem nfs_up(nf->nf_mount, nf->nf_td, 473191783Srmacklem "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg); 474191783Srmacklem break; 475191783Srmacklem } 476191783Srmacklem} 477191783Srmacklem 478191783Srmacklem/* 479191783Srmacklem * newnfs_request - goes something like this 480191783Srmacklem * - does the rpc by calling the krpc layer 481191783Srmacklem * - break down rpc header and return with nfs reply 482191783Srmacklem * nb: always frees up nd_mreq mbuf list 483191783Srmacklem */ 484191783Srmacklemint 485191783Srmacklemnewnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, 486191783Srmacklem struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp, 487191783Srmacklem struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers, 488317404Srmacklem u_char *retsum, int toplevel, u_int64_t *xidp, struct nfsclsession *dssep) 489191783Srmacklem{ 490317404Srmacklem uint32_t retseq, retval, slotseq, *tl; 491191783Srmacklem time_t waituntil; 492244042Srmacklem int i = 0, j = 0, opcnt, set_sigset = 0, slot; 493191783Srmacklem int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS; 494317404Srmacklem int freeslot, maxslot, reterr, slotpos, timeo; 495191783Srmacklem u_int16_t procnum; 496191783Srmacklem u_int trylater_delay = 1; 497191783Srmacklem struct nfs_feedback_arg nf; 498245909Sjhb struct timeval timo; 499191783Srmacklem AUTH *auth; 500191783Srmacklem struct rpc_callextra ext; 501191783Srmacklem enum clnt_stat stat; 502191783Srmacklem struct nfsreq *rep = NULL; 503253049Srmacklem char *srv_principal = NULL, *clnt_principal = NULL; 504195642Srmacklem sigset_t oldset; 505230345Srmacklem struct ucred *authcred; 506317404Srmacklem struct nfsclsession *sep; 507317404Srmacklem uint8_t sessionid[NFSX_V4SESSIONID]; 508191783Srmacklem 509317404Srmacklem sep = dssep; 510191783Srmacklem if (xidp != NULL) 511191783Srmacklem *xidp = 0; 512191783Srmacklem /* Reject requests while attempting a forced unmount. */ 513191783Srmacklem if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) { 514191783Srmacklem m_freem(nd->nd_mreq); 515191783Srmacklem return (ESTALE); 516191783Srmacklem } 517191783Srmacklem 518230345Srmacklem /* 519230345Srmacklem * Set authcred, which is used to acquire RPC credentials to 520230345Srmacklem * the cred argument, by default. The crhold() should not be 521230345Srmacklem * necessary, but will ensure that some future code change 522230345Srmacklem * doesn't result in the credential being free'd prematurely. 523230345Srmacklem */ 524230345Srmacklem authcred = crhold(cred); 525230345Srmacklem 526195642Srmacklem /* For client side interruptible mounts, mask off the signals. */ 527195642Srmacklem if (nmp != NULL && td != NULL && NFSHASINT(nmp)) { 528195642Srmacklem newnfs_set_sigmask(td, &oldset); 529195642Srmacklem set_sigset = 1; 530195642Srmacklem } 531195642Srmacklem 532191783Srmacklem /* 533192675Srmacklem * XXX if not already connected call nfs_connect now. Longer 534192675Srmacklem * term, change nfs_mount to call nfs_connect unconditionally 535192675Srmacklem * and let clnt_reconnect_create handle reconnects. 536192675Srmacklem */ 537192675Srmacklem if (nrp->nr_client == NULL) 538192675Srmacklem newnfs_connect(nmp, nrp, cred, td, 0); 539192675Srmacklem 540192675Srmacklem /* 541191783Srmacklem * For a client side mount, nmp is != NULL and clp == NULL. For 542191783Srmacklem * server calls (callbacks or upcalls), nmp == NULL. 543191783Srmacklem */ 544191783Srmacklem if (clp != NULL) { 545191783Srmacklem NFSLOCKSTATE(); 546191783Srmacklem if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) { 547191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 548191783Srmacklem if (nd->nd_procnum != NFSPROC_NULL) { 549191783Srmacklem if (clp->lc_flags & LCL_GSSINTEGRITY) 550191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 551191783Srmacklem else if (clp->lc_flags & LCL_GSSPRIVACY) 552191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 553191783Srmacklem } 554191783Srmacklem } 555191783Srmacklem NFSUNLOCKSTATE(); 556191783Srmacklem } else if (nmp != NULL && NFSHASKERB(nmp) && 557191783Srmacklem nd->nd_procnum != NFSPROC_NULL) { 558191783Srmacklem if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0) 559191783Srmacklem nd->nd_flag |= ND_USEGSSNAME; 560192675Srmacklem if ((nd->nd_flag & ND_USEGSSNAME) != 0) { 561192675Srmacklem /* 562192675Srmacklem * If there is a client side host based credential, 563192675Srmacklem * use that, otherwise use the system uid, if set. 564230345Srmacklem * The system uid is in the nmp->nm_sockreq.nr_cred 565230345Srmacklem * credentials. 566192675Srmacklem */ 567192675Srmacklem if (nmp->nm_krbnamelen > 0) { 568192675Srmacklem usegssname = 1; 569253049Srmacklem clnt_principal = nmp->nm_krbname; 570192675Srmacklem } else if (nmp->nm_uid != (uid_t)-1) { 571230345Srmacklem KASSERT(nmp->nm_sockreq.nr_cred != NULL, 572230345Srmacklem ("newnfs_request: NULL nr_cred")); 573230345Srmacklem crfree(authcred); 574230345Srmacklem authcred = crhold(nmp->nm_sockreq.nr_cred); 575192675Srmacklem } 576192675Srmacklem } else if (nmp->nm_krbnamelen == 0 && 577192675Srmacklem nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) { 578192675Srmacklem /* 579192675Srmacklem * If there is no host based principal name and 580192675Srmacklem * the system uid is set and this is root, use the 581192675Srmacklem * system uid, since root won't have user 582192675Srmacklem * credentials in a credentials cache file. 583230345Srmacklem * The system uid is in the nmp->nm_sockreq.nr_cred 584230345Srmacklem * credentials. 585192675Srmacklem */ 586230345Srmacklem KASSERT(nmp->nm_sockreq.nr_cred != NULL, 587230345Srmacklem ("newnfs_request: NULL nr_cred")); 588230345Srmacklem crfree(authcred); 589230345Srmacklem authcred = crhold(nmp->nm_sockreq.nr_cred); 590192675Srmacklem } 591191783Srmacklem if (NFSHASINTEGRITY(nmp)) 592191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 593191783Srmacklem else if (NFSHASPRIVACY(nmp)) 594191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 595191783Srmacklem else 596191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 597191783Srmacklem srv_principal = NFSMNT_SRVKRBNAME(nmp); 598223436Srmacklem } else if (nmp != NULL && !NFSHASKERB(nmp) && 599223436Srmacklem nd->nd_procnum != NFSPROC_NULL && 600223436Srmacklem (nd->nd_flag & ND_USEGSSNAME) != 0) { 601223436Srmacklem /* 602223436Srmacklem * Use the uid that did the mount when the RPC is doing 603223436Srmacklem * NFSv4 system operations, as indicated by the 604223436Srmacklem * ND_USEGSSNAME flag, for the AUTH_SYS case. 605230345Srmacklem * The credentials in nm_sockreq.nr_cred were used for the 606230345Srmacklem * mount. 607223436Srmacklem */ 608230345Srmacklem KASSERT(nmp->nm_sockreq.nr_cred != NULL, 609230345Srmacklem ("newnfs_request: NULL nr_cred")); 610230345Srmacklem crfree(authcred); 611230345Srmacklem authcred = crhold(nmp->nm_sockreq.nr_cred); 612191783Srmacklem } 613191783Srmacklem 614191783Srmacklem if (nmp != NULL) { 615191783Srmacklem bzero(&nf, sizeof(struct nfs_feedback_arg)); 616191783Srmacklem nf.nf_mount = nmp; 617191783Srmacklem nf.nf_td = td; 618245909Sjhb nf.nf_lastmsg = NFSD_MONOSEC - 619191783Srmacklem ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay)); 620191783Srmacklem } 621191783Srmacklem 622192181Srmacklem if (nd->nd_procnum == NFSPROC_NULL) 623192181Srmacklem auth = authnone_create(); 624253049Srmacklem else if (usegssname) { 625253049Srmacklem /* 626253049Srmacklem * For this case, the authenticator is held in the 627253049Srmacklem * nfssockreq structure, so don't release the reference count 628253049Srmacklem * held on it. --> Don't AUTH_DESTROY() it in this function. 629253049Srmacklem */ 630253049Srmacklem if (nrp->nr_auth == NULL) 631253049Srmacklem nrp->nr_auth = nfs_getauth(nrp, secflavour, 632253049Srmacklem clnt_principal, srv_principal, NULL, authcred); 633253049Srmacklem else 634253049Srmacklem rpc_gss_refresh_auth_call(nrp->nr_auth); 635253049Srmacklem auth = nrp->nr_auth; 636253049Srmacklem } else 637191783Srmacklem auth = nfs_getauth(nrp, secflavour, NULL, 638230345Srmacklem srv_principal, NULL, authcred); 639230345Srmacklem crfree(authcred); 640191783Srmacklem if (auth == NULL) { 641191783Srmacklem m_freem(nd->nd_mreq); 642195642Srmacklem if (set_sigset) 643195642Srmacklem newnfs_restore_sigmask(td, &oldset); 644191783Srmacklem return (EACCES); 645191783Srmacklem } 646191783Srmacklem bzero(&ext, sizeof(ext)); 647191783Srmacklem ext.rc_auth = auth; 648191783Srmacklem if (nmp != NULL) { 649191783Srmacklem ext.rc_feedback = nfs_feedback; 650191783Srmacklem ext.rc_feedback_arg = &nf; 651191783Srmacklem } 652191783Srmacklem 653191783Srmacklem procnum = nd->nd_procnum; 654191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && 655192181Srmacklem nd->nd_procnum != NFSPROC_NULL && 656191783Srmacklem nd->nd_procnum != NFSV4PROC_CBCOMPOUND) 657191783Srmacklem procnum = NFSV4PROC_COMPOUND; 658191783Srmacklem 659191783Srmacklem if (nmp != NULL) { 660306663Srmacklem NFSINCRGLOBAL(newnfsstats.rpcrequests); 661207764Srmacklem 662207764Srmacklem /* Map the procnum to the old NFSv2 one, as required. */ 663207764Srmacklem if ((nd->nd_flag & ND_NFSV2) != 0) { 664207764Srmacklem if (nd->nd_procnum < NFS_V3NPROCS) 665207764Srmacklem procnum = nfsv2_procid[nd->nd_procnum]; 666207764Srmacklem else 667207764Srmacklem procnum = NFSV2PROC_NOOP; 668207764Srmacklem } 669207764Srmacklem 670191783Srmacklem /* 671191783Srmacklem * Now only used for the R_DONTRECOVER case, but until that is 672191783Srmacklem * supported within the krpc code, I need to keep a queue of 673191783Srmacklem * outstanding RPCs for nfsv4 client requests. 674191783Srmacklem */ 675191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND) 676191783Srmacklem MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq), 677191783Srmacklem M_NFSDREQ, M_WAITOK); 678223280Srmacklem#ifdef KDTRACE_HOOKS 679223280Srmacklem if (dtrace_nfscl_nfs234_start_probe != NULL) { 680223280Srmacklem uint32_t probe_id; 681223280Srmacklem int probe_procnum; 682223280Srmacklem 683223280Srmacklem if (nd->nd_flag & ND_NFSV4) { 684223280Srmacklem probe_id = 685223280Srmacklem nfscl_nfs4_start_probes[nd->nd_procnum]; 686223280Srmacklem probe_procnum = nd->nd_procnum; 687223280Srmacklem } else if (nd->nd_flag & ND_NFSV3) { 688223280Srmacklem probe_id = nfscl_nfs3_start_probes[procnum]; 689223280Srmacklem probe_procnum = procnum; 690223280Srmacklem } else { 691223280Srmacklem probe_id = 692223280Srmacklem nfscl_nfs2_start_probes[nd->nd_procnum]; 693223280Srmacklem probe_procnum = procnum; 694223280Srmacklem } 695223280Srmacklem if (probe_id != 0) 696223280Srmacklem (dtrace_nfscl_nfs234_start_probe) 697223280Srmacklem (probe_id, vp, nd->nd_mreq, cred, 698223280Srmacklem probe_procnum); 699223280Srmacklem } 700223280Srmacklem#endif 701191783Srmacklem } 702191783Srmacklem trycnt = 0; 703244042Srmacklem freeslot = -1; /* Set to slot that needs to be free'd */ 704191783Srmacklemtryagain: 705244042Srmacklem slot = -1; /* Slot that needs a sequence# increment. */ 706228757Srmacklem /* 707228757Srmacklem * This timeout specifies when a new socket should be created, 708228757Srmacklem * along with new xid values. For UDP, this should be done 709228757Srmacklem * infrequently, since retransmits of RPC requests should normally 710228757Srmacklem * use the same xid. 711228757Srmacklem */ 712191783Srmacklem if (nmp == NULL) { 713191783Srmacklem timo.tv_usec = 0; 714191783Srmacklem if (clp == NULL) 715191783Srmacklem timo.tv_sec = NFSV4_UPCALLTIMEO; 716191783Srmacklem else 717191783Srmacklem timo.tv_sec = NFSV4_CALLBACKTIMEO; 718191783Srmacklem } else { 719191783Srmacklem if (nrp->nr_sotype != SOCK_DGRAM) { 720191783Srmacklem timo.tv_usec = 0; 721191783Srmacklem if ((nmp->nm_flag & NFSMNT_NFSV4)) 722191783Srmacklem timo.tv_sec = INT_MAX; 723191783Srmacklem else 724191783Srmacklem timo.tv_sec = NFS_TCPTIMEO; 725191783Srmacklem } else { 726228757Srmacklem if (NFSHASSOFT(nmp)) { 727228757Srmacklem /* 728228757Srmacklem * CLSET_RETRIES is set to 2, so this should be 729228757Srmacklem * half of the total timeout required. 730228757Srmacklem */ 731228757Srmacklem timeo = nmp->nm_retry * nmp->nm_timeo / 2; 732228757Srmacklem if (timeo < 1) 733228757Srmacklem timeo = 1; 734228757Srmacklem timo.tv_sec = timeo / NFS_HZ; 735228757Srmacklem timo.tv_usec = (timeo % NFS_HZ) * 1000000 / 736228757Srmacklem NFS_HZ; 737228757Srmacklem } else { 738228757Srmacklem /* For UDP hard mounts, use a large value. */ 739228757Srmacklem timo.tv_sec = NFS_MAXTIMEO / NFS_HZ; 740228757Srmacklem timo.tv_usec = 0; 741228757Srmacklem } 742191783Srmacklem } 743191783Srmacklem 744191783Srmacklem if (rep != NULL) { 745191783Srmacklem rep->r_flags = 0; 746191783Srmacklem rep->r_nmp = nmp; 747191783Srmacklem /* 748191783Srmacklem * Chain request into list of outstanding requests. 749191783Srmacklem */ 750191783Srmacklem NFSLOCKREQ(); 751191783Srmacklem TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain); 752191783Srmacklem NFSUNLOCKREQ(); 753191783Srmacklem } 754191783Srmacklem } 755191783Srmacklem 756191783Srmacklem nd->nd_mrep = NULL; 757269398Srmacklem if (clp != NULL && sep != NULL) 758269398Srmacklem stat = clnt_bck_call(nrp->nr_client, &ext, procnum, 759269398Srmacklem nd->nd_mreq, &nd->nd_mrep, timo, sep->nfsess_xprt); 760269398Srmacklem else 761269398Srmacklem stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, 762269398Srmacklem nd->nd_mreq, &nd->nd_mrep, timo); 763191783Srmacklem 764191783Srmacklem if (rep != NULL) { 765191783Srmacklem /* 766191783Srmacklem * RPC done, unlink the request. 767191783Srmacklem */ 768191783Srmacklem NFSLOCKREQ(); 769191783Srmacklem TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 770191783Srmacklem NFSUNLOCKREQ(); 771191783Srmacklem } 772191783Srmacklem 773191783Srmacklem /* 774191783Srmacklem * If there was a successful reply and a tprintf msg. 775191783Srmacklem * tprintf a response. 776191783Srmacklem */ 777191783Srmacklem if (stat == RPC_SUCCESS) { 778191783Srmacklem error = 0; 779191783Srmacklem } else if (stat == RPC_TIMEDOUT) { 780306663Srmacklem NFSINCRGLOBAL(newnfsstats.rpctimeouts); 781191783Srmacklem error = ETIMEDOUT; 782191783Srmacklem } else if (stat == RPC_VERSMISMATCH) { 783306663Srmacklem NFSINCRGLOBAL(newnfsstats.rpcinvalid); 784191783Srmacklem error = EOPNOTSUPP; 785191783Srmacklem } else if (stat == RPC_PROGVERSMISMATCH) { 786306663Srmacklem NFSINCRGLOBAL(newnfsstats.rpcinvalid); 787191783Srmacklem error = EPROTONOSUPPORT; 788245476Sjhb } else if (stat == RPC_INTR) { 789245476Sjhb error = EINTR; 790191783Srmacklem } else { 791306663Srmacklem NFSINCRGLOBAL(newnfsstats.rpcinvalid); 792191783Srmacklem error = EACCES; 793191783Srmacklem } 794191783Srmacklem if (error) { 795191783Srmacklem m_freem(nd->nd_mreq); 796253049Srmacklem if (usegssname == 0) 797253049Srmacklem AUTH_DESTROY(auth); 798191783Srmacklem if (rep != NULL) 799191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 800195642Srmacklem if (set_sigset) 801195642Srmacklem newnfs_restore_sigmask(td, &oldset); 802191783Srmacklem return (error); 803191783Srmacklem } 804191783Srmacklem 805191783Srmacklem KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 806191783Srmacklem 807192695Srmacklem /* 808192695Srmacklem * Search for any mbufs that are not a multiple of 4 bytes long 809192695Srmacklem * or with m_data not longword aligned. 810192695Srmacklem * These could cause pointer alignment problems, so copy them to 811192695Srmacklem * well aligned mbufs. 812192695Srmacklem */ 813249592Sken newnfs_realign(&nd->nd_mrep, M_WAITOK); 814191783Srmacklem nd->nd_md = nd->nd_mrep; 815191783Srmacklem nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 816191783Srmacklem nd->nd_repstat = 0; 817269398Srmacklem if (nd->nd_procnum != NFSPROC_NULL && 818269398Srmacklem nd->nd_procnum != NFSV4PROC_CBNULL) { 819244042Srmacklem /* If sep == NULL, set it to the default in nmp. */ 820244042Srmacklem if (sep == NULL && nmp != NULL) 821317404Srmacklem sep = nfsmnt_mdssession(nmp); 822191783Srmacklem /* 823191783Srmacklem * and now the actual NFS xdr. 824191783Srmacklem */ 825191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 826191783Srmacklem nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl); 827244042Srmacklem if (nd->nd_repstat >= 10000) 828244042Srmacklem NFSCL_DEBUG(1, "proc=%d reps=%d\n", (int)nd->nd_procnum, 829244042Srmacklem (int)nd->nd_repstat); 830244042Srmacklem 831244042Srmacklem /* 832244042Srmacklem * Get rid of the tag, return count and SEQUENCE result for 833244042Srmacklem * NFSv4. 834244042Srmacklem */ 835244042Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) { 836244042Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 837244042Srmacklem i = fxdr_unsigned(int, *tl); 838244042Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 839244042Srmacklem if (error) 840244042Srmacklem goto nfsmout; 841244042Srmacklem NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 842244042Srmacklem opcnt = fxdr_unsigned(int, *tl++); 843244042Srmacklem i = fxdr_unsigned(int, *tl++); 844244042Srmacklem j = fxdr_unsigned(int, *tl); 845244042Srmacklem if (j >= 10000) 846244042Srmacklem NFSCL_DEBUG(1, "fop=%d fst=%d\n", i, j); 847244042Srmacklem /* 848244042Srmacklem * If the first op is Sequence, free up the slot. 849244042Srmacklem */ 850269398Srmacklem if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j != 0) || 851269398Srmacklem (clp != NULL && i == NFSV4OP_CBSEQUENCE && j != 0)) 852244042Srmacklem NFSCL_DEBUG(1, "failed seq=%d\n", j); 853336899Srmacklem if (((nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) || 854336899Srmacklem (clp != NULL && i == NFSV4OP_CBSEQUENCE && 855336899Srmacklem j == 0)) && sep != NULL) { 856269398Srmacklem if (i == NFSV4OP_SEQUENCE) 857269398Srmacklem NFSM_DISSECT(tl, uint32_t *, 858269398Srmacklem NFSX_V4SESSIONID + 859269398Srmacklem 5 * NFSX_UNSIGNED); 860269398Srmacklem else 861269398Srmacklem NFSM_DISSECT(tl, uint32_t *, 862269398Srmacklem NFSX_V4SESSIONID + 863269398Srmacklem 4 * NFSX_UNSIGNED); 864244042Srmacklem mtx_lock(&sep->nfsess_mtx); 865317404Srmacklem if (bcmp(tl, sep->nfsess_sessionid, 866317404Srmacklem NFSX_V4SESSIONID) == 0) { 867317404Srmacklem tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 868317404Srmacklem retseq = fxdr_unsigned(uint32_t, *tl++); 869317404Srmacklem slot = fxdr_unsigned(int, *tl++); 870317404Srmacklem freeslot = slot; 871317404Srmacklem if (retseq != sep->nfsess_slotseq[slot]) 872317404Srmacklem printf("retseq diff 0x%x\n", 873317404Srmacklem retseq); 874317404Srmacklem retval = fxdr_unsigned(uint32_t, *++tl); 875317404Srmacklem if ((retval + 1) < sep->nfsess_foreslots 876317404Srmacklem ) 877317404Srmacklem sep->nfsess_foreslots = (retval 878317404Srmacklem + 1); 879317404Srmacklem else if ((retval + 1) > 880317404Srmacklem sep->nfsess_foreslots) 881317404Srmacklem sep->nfsess_foreslots = (retval 882317404Srmacklem < 64) ? (retval + 1) : 64; 883317404Srmacklem } 884244042Srmacklem mtx_unlock(&sep->nfsess_mtx); 885244042Srmacklem 886244042Srmacklem /* Grab the op and status for the next one. */ 887244042Srmacklem if (opcnt > 1) { 888244042Srmacklem NFSM_DISSECT(tl, uint32_t *, 889244042Srmacklem 2 * NFSX_UNSIGNED); 890244042Srmacklem i = fxdr_unsigned(int, *tl++); 891244042Srmacklem j = fxdr_unsigned(int, *tl); 892244042Srmacklem } 893244042Srmacklem } 894244042Srmacklem } 895191783Srmacklem if (nd->nd_repstat != 0) { 896317404Srmacklem if (nd->nd_repstat == NFSERR_BADSESSION && 897336899Srmacklem nmp != NULL && dssep == NULL && 898336899Srmacklem (nd->nd_flag & ND_NFSV41) != 0) { 899317404Srmacklem /* 900317404Srmacklem * If this is a client side MDS RPC, mark 901317404Srmacklem * the MDS session defunct and initiate 902317404Srmacklem * recovery, as required. 903317404Srmacklem * The nfsess_defunct field is protected by 904317404Srmacklem * the NFSLOCKMNT()/nm_mtx lock and not the 905317404Srmacklem * nfsess_mtx lock to simplify its handling, 906317404Srmacklem * for the MDS session. This lock is also 907317404Srmacklem * sufficient for nfsess_sessionid, since it 908317404Srmacklem * never changes in the structure. 909317404Srmacklem */ 910317404Srmacklem NFSCL_DEBUG(1, "Got badsession\n"); 911317404Srmacklem NFSLOCKCLSTATE(); 912317404Srmacklem NFSLOCKMNT(nmp); 913317404Srmacklem sep = NFSMNT_MDSSESSION(nmp); 914317404Srmacklem if (bcmp(sep->nfsess_sessionid, nd->nd_sequence, 915317404Srmacklem NFSX_V4SESSIONID) == 0) { 916317404Srmacklem /* Initiate recovery. */ 917317404Srmacklem sep->nfsess_defunct = 1; 918317404Srmacklem NFSCL_DEBUG(1, "Marked defunct\n"); 919317404Srmacklem if (nmp->nm_clp != NULL) { 920317404Srmacklem nmp->nm_clp->nfsc_flags |= 921317404Srmacklem NFSCLFLAGS_RECOVER; 922317404Srmacklem wakeup(nmp->nm_clp); 923317404Srmacklem } 924317404Srmacklem } 925317404Srmacklem NFSUNLOCKCLSTATE(); 926317404Srmacklem /* 927317404Srmacklem * Sleep for up to 1sec waiting for a new 928317404Srmacklem * session. 929317404Srmacklem */ 930317404Srmacklem mtx_sleep(&nmp->nm_sess, &nmp->nm_mtx, PZERO, 931317404Srmacklem "nfsbadsess", hz); 932317404Srmacklem /* 933317404Srmacklem * Get the session again, in case a new one 934317404Srmacklem * has been created during the sleep. 935317404Srmacklem */ 936317404Srmacklem sep = NFSMNT_MDSSESSION(nmp); 937317404Srmacklem NFSUNLOCKMNT(nmp); 938317404Srmacklem if ((nd->nd_flag & ND_LOOPBADSESS) != 0) { 939317404Srmacklem reterr = nfsv4_sequencelookup(nmp, sep, 940317404Srmacklem &slotpos, &maxslot, &slotseq, 941317404Srmacklem sessionid); 942317404Srmacklem if (reterr == 0) { 943317404Srmacklem /* Fill in new session info. */ 944317404Srmacklem NFSCL_DEBUG(1, 945317404Srmacklem "Filling in new sequence\n"); 946317404Srmacklem tl = nd->nd_sequence; 947317404Srmacklem bcopy(sessionid, tl, 948317404Srmacklem NFSX_V4SESSIONID); 949317404Srmacklem tl += NFSX_V4SESSIONID / 950317404Srmacklem NFSX_UNSIGNED; 951317404Srmacklem *tl++ = txdr_unsigned(slotseq); 952317404Srmacklem *tl++ = txdr_unsigned(slotpos); 953317404Srmacklem *tl = txdr_unsigned(maxslot); 954317404Srmacklem } 955317404Srmacklem if (reterr == NFSERR_BADSESSION || 956317404Srmacklem reterr == 0) { 957317404Srmacklem NFSCL_DEBUG(1, 958317404Srmacklem "Badsession looping\n"); 959317404Srmacklem m_freem(nd->nd_mrep); 960317404Srmacklem nd->nd_mrep = NULL; 961317404Srmacklem goto tryagain; 962317404Srmacklem } 963317404Srmacklem nd->nd_repstat = reterr; 964317404Srmacklem NFSCL_DEBUG(1, "Got err=%d\n", reterr); 965317404Srmacklem } 966317404Srmacklem } 967338308Srmacklem /* 968338308Srmacklem * When clp != NULL, it is a callback and all 969338308Srmacklem * callback operations can be retried for NFSERR_DELAY. 970338308Srmacklem */ 971224117Srmacklem if (((nd->nd_repstat == NFSERR_DELAY || 972224117Srmacklem nd->nd_repstat == NFSERR_GRACE) && 973338308Srmacklem (nd->nd_flag & ND_NFSV4) && (clp != NULL || 974338308Srmacklem (nd->nd_procnum != NFSPROC_DELEGRETURN && 975191783Srmacklem nd->nd_procnum != NFSPROC_SETATTR && 976191783Srmacklem nd->nd_procnum != NFSPROC_READ && 977244042Srmacklem nd->nd_procnum != NFSPROC_READDS && 978191783Srmacklem nd->nd_procnum != NFSPROC_WRITE && 979244042Srmacklem nd->nd_procnum != NFSPROC_WRITEDS && 980191783Srmacklem nd->nd_procnum != NFSPROC_OPEN && 981191783Srmacklem nd->nd_procnum != NFSPROC_CREATE && 982191783Srmacklem nd->nd_procnum != NFSPROC_OPENCONFIRM && 983191783Srmacklem nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 984191783Srmacklem nd->nd_procnum != NFSPROC_CLOSE && 985191783Srmacklem nd->nd_procnum != NFSPROC_LOCK && 986338308Srmacklem nd->nd_procnum != NFSPROC_LOCKU))) || 987191783Srmacklem (nd->nd_repstat == NFSERR_DELAY && 988191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) || 989191783Srmacklem nd->nd_repstat == NFSERR_RESOURCE) { 990191783Srmacklem if (trylater_delay > NFS_TRYLATERDEL) 991191783Srmacklem trylater_delay = NFS_TRYLATERDEL; 992191783Srmacklem waituntil = NFSD_MONOSEC + trylater_delay; 993191783Srmacklem while (NFSD_MONOSEC < waituntil) 994207170Srmacklem (void) nfs_catnap(PZERO, 0, "nfstry"); 995191783Srmacklem trylater_delay *= 2; 996244042Srmacklem if (slot != -1) { 997244042Srmacklem mtx_lock(&sep->nfsess_mtx); 998244042Srmacklem sep->nfsess_slotseq[slot]++; 999244042Srmacklem *nd->nd_slotseq = txdr_unsigned( 1000244042Srmacklem sep->nfsess_slotseq[slot]); 1001244042Srmacklem mtx_unlock(&sep->nfsess_mtx); 1002244042Srmacklem } 1003223441Srmacklem m_freem(nd->nd_mrep); 1004223441Srmacklem nd->nd_mrep = NULL; 1005191783Srmacklem goto tryagain; 1006191783Srmacklem } 1007191783Srmacklem 1008191783Srmacklem /* 1009191783Srmacklem * If the File Handle was stale, invalidate the 1010191783Srmacklem * lookup cache, just in case. 1011191783Srmacklem * (vp != NULL implies a client side call) 1012191783Srmacklem */ 1013191783Srmacklem if (nd->nd_repstat == ESTALE && vp != NULL) { 1014191783Srmacklem cache_purge(vp); 1015191783Srmacklem if (ncl_call_invalcaches != NULL) 1016191783Srmacklem (*ncl_call_invalcaches)(vp); 1017191783Srmacklem } 1018191783Srmacklem } 1019244042Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) { 1020244042Srmacklem /* Free the slot, as required. */ 1021244042Srmacklem if (freeslot != -1) 1022244042Srmacklem nfsv4_freeslot(sep, freeslot); 1023191783Srmacklem /* 1024244042Srmacklem * If this op is Putfh, throw its results away. 1025191783Srmacklem */ 1026244042Srmacklem if (j >= 10000) 1027244042Srmacklem NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j); 1028244042Srmacklem if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) { 1029191783Srmacklem NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 1030191783Srmacklem i = fxdr_unsigned(int, *tl++); 1031191783Srmacklem j = fxdr_unsigned(int, *tl); 1032244042Srmacklem if (j >= 10000) 1033244042Srmacklem NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i, 1034244042Srmacklem j); 1035191783Srmacklem /* 1036191783Srmacklem * All Compounds that do an Op that must 1037191783Srmacklem * be in sequence consist of NFSV4OP_PUTFH 1038191783Srmacklem * followed by one of these. As such, we 1039191783Srmacklem * can determine if the seqid# should be 1040191783Srmacklem * incremented, here. 1041191783Srmacklem */ 1042191783Srmacklem if ((i == NFSV4OP_OPEN || 1043191783Srmacklem i == NFSV4OP_OPENCONFIRM || 1044191783Srmacklem i == NFSV4OP_OPENDOWNGRADE || 1045191783Srmacklem i == NFSV4OP_CLOSE || 1046191783Srmacklem i == NFSV4OP_LOCK || 1047191783Srmacklem i == NFSV4OP_LOCKU) && 1048191783Srmacklem (j == 0 || 1049191783Srmacklem (j != NFSERR_STALECLIENTID && 1050191783Srmacklem j != NFSERR_STALESTATEID && 1051191783Srmacklem j != NFSERR_BADSTATEID && 1052191783Srmacklem j != NFSERR_BADSEQID && 1053191783Srmacklem j != NFSERR_BADXDR && 1054191783Srmacklem j != NFSERR_RESOURCE && 1055191783Srmacklem j != NFSERR_NOFILEHANDLE))) 1056191783Srmacklem nd->nd_flag |= ND_INCRSEQID; 1057191783Srmacklem } 1058244042Srmacklem /* 1059244042Srmacklem * If this op's status is non-zero, mark 1060244042Srmacklem * that there is no more data to process. 1061317930Srmacklem * The exception is Setattr, which always has xdr 1062317930Srmacklem * when it has failed. 1063244042Srmacklem */ 1064317930Srmacklem if (j != 0 && i != NFSV4OP_SETATTR) 1065244042Srmacklem nd->nd_flag |= ND_NOMOREDATA; 1066191783Srmacklem 1067191783Srmacklem /* 1068191783Srmacklem * If R_DONTRECOVER is set, replace the stale error 1069191783Srmacklem * reply, so that recovery isn't initiated. 1070191783Srmacklem */ 1071191783Srmacklem if ((nd->nd_repstat == NFSERR_STALECLIENTID || 1072244042Srmacklem nd->nd_repstat == NFSERR_BADSESSION || 1073191783Srmacklem nd->nd_repstat == NFSERR_STALESTATEID) && 1074191783Srmacklem rep != NULL && (rep->r_flags & R_DONTRECOVER)) 1075191783Srmacklem nd->nd_repstat = NFSERR_STALEDONTRECOVER; 1076191783Srmacklem } 1077192181Srmacklem } 1078191783Srmacklem 1079223280Srmacklem#ifdef KDTRACE_HOOKS 1080223280Srmacklem if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) { 1081223280Srmacklem uint32_t probe_id; 1082223280Srmacklem int probe_procnum; 1083223280Srmacklem 1084223280Srmacklem if (nd->nd_flag & ND_NFSV4) { 1085223280Srmacklem probe_id = nfscl_nfs4_done_probes[nd->nd_procnum]; 1086223280Srmacklem probe_procnum = nd->nd_procnum; 1087223280Srmacklem } else if (nd->nd_flag & ND_NFSV3) { 1088223280Srmacklem probe_id = nfscl_nfs3_done_probes[procnum]; 1089223280Srmacklem probe_procnum = procnum; 1090223280Srmacklem } else { 1091223280Srmacklem probe_id = nfscl_nfs2_done_probes[nd->nd_procnum]; 1092223280Srmacklem probe_procnum = procnum; 1093223280Srmacklem } 1094223280Srmacklem if (probe_id != 0) 1095223280Srmacklem (dtrace_nfscl_nfs234_done_probe)(probe_id, vp, 1096223280Srmacklem nd->nd_mreq, cred, probe_procnum, 0); 1097223280Srmacklem } 1098223280Srmacklem#endif 1099223280Srmacklem 1100192181Srmacklem m_freem(nd->nd_mreq); 1101253049Srmacklem if (usegssname == 0) 1102253049Srmacklem AUTH_DESTROY(auth); 1103192181Srmacklem if (rep != NULL) 1104192181Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 1105195642Srmacklem if (set_sigset) 1106195642Srmacklem newnfs_restore_sigmask(td, &oldset); 1107192181Srmacklem return (0); 1108191783Srmacklemnfsmout: 1109191783Srmacklem mbuf_freem(nd->nd_mrep); 1110191783Srmacklem mbuf_freem(nd->nd_mreq); 1111253049Srmacklem if (usegssname == 0) 1112253049Srmacklem AUTH_DESTROY(auth); 1113191783Srmacklem if (rep != NULL) 1114191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 1115195642Srmacklem if (set_sigset) 1116195642Srmacklem newnfs_restore_sigmask(td, &oldset); 1117191783Srmacklem return (error); 1118191783Srmacklem} 1119191783Srmacklem 1120191783Srmacklem/* 1121191783Srmacklem * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 1122191783Srmacklem * wait for all requests to complete. This is used by forced unmounts 1123191783Srmacklem * to terminate any outstanding RPCs. 1124191783Srmacklem */ 1125191783Srmacklemint 1126191783Srmacklemnewnfs_nmcancelreqs(struct nfsmount *nmp) 1127191783Srmacklem{ 1128325407Srmacklem struct nfsclds *dsp; 1129325407Srmacklem struct __rpc_client *cl; 1130191783Srmacklem 1131191783Srmacklem if (nmp->nm_sockreq.nr_client != NULL) 1132191783Srmacklem CLNT_CLOSE(nmp->nm_sockreq.nr_client); 1133325407Srmacklemlookformore: 1134325407Srmacklem NFSLOCKMNT(nmp); 1135325407Srmacklem TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 1136325407Srmacklem NFSLOCKDS(dsp); 1137325407Srmacklem if (dsp != TAILQ_FIRST(&nmp->nm_sess) && 1138325407Srmacklem (dsp->nfsclds_flags & NFSCLDS_CLOSED) == 0 && 1139325407Srmacklem dsp->nfsclds_sockp != NULL && 1140325407Srmacklem dsp->nfsclds_sockp->nr_client != NULL) { 1141325407Srmacklem dsp->nfsclds_flags |= NFSCLDS_CLOSED; 1142325407Srmacklem cl = dsp->nfsclds_sockp->nr_client; 1143325407Srmacklem NFSUNLOCKDS(dsp); 1144325407Srmacklem NFSUNLOCKMNT(nmp); 1145325407Srmacklem CLNT_CLOSE(cl); 1146325407Srmacklem goto lookformore; 1147325407Srmacklem } 1148325407Srmacklem NFSUNLOCKDS(dsp); 1149325407Srmacklem } 1150325407Srmacklem NFSUNLOCKMNT(nmp); 1151191783Srmacklem return (0); 1152191783Srmacklem} 1153191783Srmacklem 1154191783Srmacklem/* 1155191783Srmacklem * Any signal that can interrupt an NFS operation in an intr mount 1156191783Srmacklem * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 1157191783Srmacklem */ 1158191783Srmacklemint newnfs_sig_set[] = { 1159191783Srmacklem SIGINT, 1160191783Srmacklem SIGTERM, 1161191783Srmacklem SIGHUP, 1162191783Srmacklem SIGKILL, 1163191783Srmacklem SIGQUIT 1164191783Srmacklem}; 1165191783Srmacklem 1166191783Srmacklem/* 1167191783Srmacklem * Check to see if one of the signals in our subset is pending on 1168191783Srmacklem * the process (in an intr mount). 1169191783Srmacklem */ 1170191783Srmacklemstatic int 1171191783Srmacklemnfs_sig_pending(sigset_t set) 1172191783Srmacklem{ 1173191783Srmacklem int i; 1174191783Srmacklem 1175191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) 1176191783Srmacklem if (SIGISMEMBER(set, newnfs_sig_set[i])) 1177191783Srmacklem return (1); 1178191783Srmacklem return (0); 1179191783Srmacklem} 1180191783Srmacklem 1181191783Srmacklem/* 1182191783Srmacklem * The set/restore sigmask functions are used to (temporarily) overwrite 1183246417Sjhb * the thread td_sigmask during an RPC call (for example). These are also 1184191783Srmacklem * used in other places in the NFS client that might tsleep(). 1185191783Srmacklem */ 1186191783Srmacklemvoid 1187191783Srmacklemnewnfs_set_sigmask(struct thread *td, sigset_t *oldset) 1188191783Srmacklem{ 1189191783Srmacklem sigset_t newset; 1190191783Srmacklem int i; 1191191783Srmacklem struct proc *p; 1192191783Srmacklem 1193191783Srmacklem SIGFILLSET(newset); 1194191783Srmacklem if (td == NULL) 1195191783Srmacklem td = curthread; /* XXX */ 1196191783Srmacklem p = td->td_proc; 1197191783Srmacklem /* Remove the NFS set of signals from newset */ 1198191783Srmacklem PROC_LOCK(p); 1199191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 1200191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) { 1201191783Srmacklem /* 1202191783Srmacklem * But make sure we leave the ones already masked 1203191783Srmacklem * by the process, ie. remove the signal from the 1204191783Srmacklem * temporary signalmask only if it wasn't already 1205191783Srmacklem * in p_sigmask. 1206191783Srmacklem */ 1207191783Srmacklem if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 1208191783Srmacklem !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 1209191783Srmacklem SIGDELSET(newset, newnfs_sig_set[i]); 1210191783Srmacklem } 1211191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 1212246417Sjhb kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 1213246417Sjhb SIGPROCMASK_PROC_LOCKED); 1214191783Srmacklem PROC_UNLOCK(p); 1215191783Srmacklem} 1216191783Srmacklem 1217191783Srmacklemvoid 1218191783Srmacklemnewnfs_restore_sigmask(struct thread *td, sigset_t *set) 1219191783Srmacklem{ 1220191783Srmacklem if (td == NULL) 1221191783Srmacklem td = curthread; /* XXX */ 1222191783Srmacklem kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 1223191783Srmacklem} 1224191783Srmacklem 1225191783Srmacklem/* 1226191783Srmacklem * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 1227191783Srmacklem * old one after msleep() returns. 1228191783Srmacklem */ 1229191783Srmacklemint 1230191783Srmacklemnewnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 1231191783Srmacklem{ 1232191783Srmacklem sigset_t oldset; 1233191783Srmacklem int error; 1234191783Srmacklem struct proc *p; 1235191783Srmacklem 1236191783Srmacklem if ((priority & PCATCH) == 0) 1237191783Srmacklem return msleep(ident, mtx, priority, wmesg, timo); 1238191783Srmacklem if (td == NULL) 1239191783Srmacklem td = curthread; /* XXX */ 1240191783Srmacklem newnfs_set_sigmask(td, &oldset); 1241191783Srmacklem error = msleep(ident, mtx, priority, wmesg, timo); 1242191783Srmacklem newnfs_restore_sigmask(td, &oldset); 1243191783Srmacklem p = td->td_proc; 1244191783Srmacklem return (error); 1245191783Srmacklem} 1246191783Srmacklem 1247191783Srmacklem/* 1248191783Srmacklem * Test for a termination condition pending on the process. 1249191783Srmacklem * This is used for NFSMNT_INT mounts. 1250191783Srmacklem */ 1251191783Srmacklemint 1252191783Srmacklemnewnfs_sigintr(struct nfsmount *nmp, struct thread *td) 1253191783Srmacklem{ 1254191783Srmacklem struct proc *p; 1255191783Srmacklem sigset_t tmpset; 1256191783Srmacklem 1257191783Srmacklem /* Terminate all requests while attempting a forced unmount. */ 1258191783Srmacklem if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 1259191783Srmacklem return (EIO); 1260191783Srmacklem if (!(nmp->nm_flag & NFSMNT_INT)) 1261191783Srmacklem return (0); 1262191783Srmacklem if (td == NULL) 1263191783Srmacklem return (0); 1264191783Srmacklem p = td->td_proc; 1265191783Srmacklem PROC_LOCK(p); 1266191783Srmacklem tmpset = p->p_siglist; 1267191783Srmacklem SIGSETOR(tmpset, td->td_siglist); 1268191783Srmacklem SIGSETNAND(tmpset, td->td_sigmask); 1269191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 1270191783Srmacklem SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 1271191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 1272191783Srmacklem if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 1273191783Srmacklem && nfs_sig_pending(tmpset)) { 1274191783Srmacklem PROC_UNLOCK(p); 1275191783Srmacklem return (EINTR); 1276191783Srmacklem } 1277191783Srmacklem PROC_UNLOCK(p); 1278191783Srmacklem return (0); 1279191783Srmacklem} 1280191783Srmacklem 1281191783Srmacklemstatic int 1282191783Srmacklemnfs_msg(struct thread *td, const char *server, const char *msg, int error) 1283191783Srmacklem{ 1284191783Srmacklem struct proc *p; 1285191783Srmacklem 1286191783Srmacklem p = td ? td->td_proc : NULL; 1287191783Srmacklem if (error) { 1288191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n", 1289191783Srmacklem server, msg, error); 1290191783Srmacklem } else { 1291191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg); 1292191783Srmacklem } 1293191783Srmacklem return (0); 1294191783Srmacklem} 1295191783Srmacklem 1296191783Srmacklemstatic void 1297191783Srmacklemnfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 1298191783Srmacklem int error, int flags) 1299191783Srmacklem{ 1300191783Srmacklem if (nmp == NULL) 1301191783Srmacklem return; 1302191783Srmacklem mtx_lock(&nmp->nm_mtx); 1303191783Srmacklem if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 1304191783Srmacklem nmp->nm_state |= NFSSTA_TIMEO; 1305191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1306191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1307191783Srmacklem VQ_NOTRESP, 0); 1308191783Srmacklem } else 1309191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1310191783Srmacklem mtx_lock(&nmp->nm_mtx); 1311191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1312191783Srmacklem nmp->nm_state |= NFSSTA_LOCKTIMEO; 1313191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1314191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1315191783Srmacklem VQ_NOTRESPLOCK, 0); 1316191783Srmacklem } else 1317191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1318191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 1319191783Srmacklem} 1320191783Srmacklem 1321191783Srmacklemstatic void 1322191783Srmacklemnfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 1323191783Srmacklem int flags, int tprintfmsg) 1324191783Srmacklem{ 1325191783Srmacklem if (nmp == NULL) 1326191783Srmacklem return; 1327191783Srmacklem if (tprintfmsg) { 1328191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 1329191783Srmacklem } 1330191783Srmacklem 1331191783Srmacklem mtx_lock(&nmp->nm_mtx); 1332191783Srmacklem if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 1333191783Srmacklem nmp->nm_state &= ~NFSSTA_TIMEO; 1334191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1335191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1336191783Srmacklem VQ_NOTRESP, 1); 1337191783Srmacklem } else 1338191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1339191783Srmacklem 1340191783Srmacklem mtx_lock(&nmp->nm_mtx); 1341191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1342191783Srmacklem nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 1343191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1344191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1345191783Srmacklem VQ_NOTRESPLOCK, 1); 1346191783Srmacklem } else 1347191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1348191783Srmacklem} 1349191783Srmacklem 1350