nfs_commonkrpc.c revision 220752
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: head/sys/fs/nfs/nfs_commonkrpc.c 220752 2011-04-17 20:01:32Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Socket operations for use by nfs 39191783Srmacklem */ 40191783Srmacklem 41191783Srmacklem#include "opt_inet6.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> 62191783Srmacklem 63191783Srmacklem#include <kgssapi/krb5/kcrypto.h> 64191783Srmacklem 65191783Srmacklem#include <fs/nfs/nfsport.h> 66191783Srmacklem 67191783SrmacklemNFSSTATESPINLOCK; 68191783SrmacklemNFSREQSPINLOCK; 69191783Srmacklemextern struct nfsstats newnfsstats; 70191783Srmacklemextern struct nfsreqhead nfsd_reqq; 71191783Srmacklemextern int nfscl_ticks; 72191783Srmacklemextern void (*ncl_call_invalcaches)(struct vnode *); 73191783Srmacklem 74191783Srmacklemstatic int nfsrv_gsscallbackson = 0; 75191783Srmacklemstatic int nfs_bufpackets = 4; 76191783Srmacklemstatic int nfs_reconnects; 77191783Srmacklemstatic int nfs3_jukebox_delay = 10; 78191783Srmacklemstatic int nfs_skip_wcc_data_onerr = 1; 79191783Srmacklemstatic int nfs_keytab_enctype = ETYPE_DES_CBC_CRC; 80191783Srmacklem 81191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 82191783Srmacklem 83191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0, 84191783Srmacklem "Buffer reservation size 2 < x < 64"); 85191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0, 86191783Srmacklem "Number of times the nfs client has had to reconnect"); 87191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0, 88191783Srmacklem "Number of seconds to delay a retry after receiving EJUKEBOX"); 89191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0, 90191783Srmacklem "Disable weak cache consistency checking when server returns an error"); 91191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, keytab_enctype, CTLFLAG_RW, &nfs_keytab_enctype, 0, 92191783Srmacklem "Encryption type for the keytab entry used by nfs"); 93191783Srmacklem 94191783Srmacklemstatic void nfs_down(struct nfsmount *, struct thread *, const char *, 95191783Srmacklem int, int); 96191783Srmacklemstatic void nfs_up(struct nfsmount *, struct thread *, const char *, 97191783Srmacklem int, int); 98191783Srmacklemstatic int nfs_msg(struct thread *, const char *, const char *, int); 99191783Srmacklem 100191783Srmacklemstruct nfs_cached_auth { 101191783Srmacklem int ca_refs; /* refcount, including 1 from the cache */ 102191783Srmacklem uid_t ca_uid; /* uid that corresponds to this auth */ 103191783Srmacklem AUTH *ca_auth; /* RPC auth handle */ 104191783Srmacklem}; 105191783Srmacklem 106207764Srmacklemstatic int nfsv2_procid[NFS_V3NPROCS] = { 107207764Srmacklem NFSV2PROC_NULL, 108207764Srmacklem NFSV2PROC_GETATTR, 109207764Srmacklem NFSV2PROC_SETATTR, 110207764Srmacklem NFSV2PROC_LOOKUP, 111207764Srmacklem NFSV2PROC_NOOP, 112207764Srmacklem NFSV2PROC_READLINK, 113207764Srmacklem NFSV2PROC_READ, 114207764Srmacklem NFSV2PROC_WRITE, 115207764Srmacklem NFSV2PROC_CREATE, 116207764Srmacklem NFSV2PROC_MKDIR, 117207764Srmacklem NFSV2PROC_SYMLINK, 118207764Srmacklem NFSV2PROC_CREATE, 119207764Srmacklem NFSV2PROC_REMOVE, 120207764Srmacklem NFSV2PROC_RMDIR, 121207764Srmacklem NFSV2PROC_RENAME, 122207764Srmacklem NFSV2PROC_LINK, 123207764Srmacklem NFSV2PROC_READDIR, 124207764Srmacklem NFSV2PROC_NOOP, 125207764Srmacklem NFSV2PROC_STATFS, 126207764Srmacklem NFSV2PROC_NOOP, 127207764Srmacklem NFSV2PROC_NOOP, 128207764Srmacklem NFSV2PROC_NOOP, 129207764Srmacklem}; 130207764Srmacklem 131191783Srmacklem/* 132191783Srmacklem * Initialize sockets and congestion for a new NFS connection. 133191783Srmacklem * We do not free the sockaddr if error. 134191783Srmacklem */ 135191783Srmacklemint 136191783Srmacklemnewnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp, 137191783Srmacklem struct ucred *cred, NFSPROC_T *p, int callback_retry_mult) 138191783Srmacklem{ 139191783Srmacklem int rcvreserve, sndreserve; 140191783Srmacklem int pktscale; 141191783Srmacklem struct sockaddr *saddr; 142191783Srmacklem struct ucred *origcred; 143191783Srmacklem CLIENT *client; 144191783Srmacklem struct netconfig *nconf; 145191783Srmacklem struct socket *so; 146220752Srmacklem int one = 1, retries, error; 147191783Srmacklem struct thread *td = curthread; 148191783Srmacklem 149191783Srmacklem /* 150191783Srmacklem * We need to establish the socket using the credentials of 151191783Srmacklem * the mountpoint. Some parts of this process (such as 152191783Srmacklem * sobind() and soconnect()) will use the curent thread's 153191783Srmacklem * credential instead of the socket credential. To work 154191783Srmacklem * around this, temporarily change the current thread's 155191783Srmacklem * credential to that of the mountpoint. 156191783Srmacklem * 157191783Srmacklem * XXX: It would be better to explicitly pass the correct 158191783Srmacklem * credential to sobind() and soconnect(). 159191783Srmacklem */ 160191783Srmacklem origcred = td->td_ucred; 161191783Srmacklem 162191783Srmacklem /* 163191783Srmacklem * Use the credential in nr_cred, if not NULL. 164191783Srmacklem */ 165191783Srmacklem if (nrp->nr_cred != NULL) 166191783Srmacklem td->td_ucred = nrp->nr_cred; 167191783Srmacklem else 168191783Srmacklem td->td_ucred = cred; 169191783Srmacklem saddr = nrp->nr_nam; 170191783Srmacklem 171191783Srmacklem if (saddr->sa_family == AF_INET) 172191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 173191783Srmacklem nconf = getnetconfigent("udp"); 174191783Srmacklem else 175191783Srmacklem nconf = getnetconfigent("tcp"); 176191783Srmacklem else 177191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 178191783Srmacklem nconf = getnetconfigent("udp6"); 179191783Srmacklem else 180191783Srmacklem nconf = getnetconfigent("tcp6"); 181191783Srmacklem 182191783Srmacklem pktscale = nfs_bufpackets; 183191783Srmacklem if (pktscale < 2) 184191783Srmacklem pktscale = 2; 185191783Srmacklem if (pktscale > 64) 186191783Srmacklem pktscale = 64; 187191783Srmacklem /* 188191783Srmacklem * soreserve() can fail if sb_max is too small, so shrink pktscale 189191783Srmacklem * and try again if there is an error. 190191783Srmacklem * Print a log message suggesting increasing sb_max. 191191783Srmacklem * Creating a socket and doing this is necessary since, if the 192191783Srmacklem * reservation sizes are too large and will make soreserve() fail, 193191783Srmacklem * the connection will work until a large send is attempted and 194191783Srmacklem * then it will loop in the krpc code. 195191783Srmacklem */ 196191783Srmacklem so = NULL; 197191783Srmacklem saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *); 198191783Srmacklem error = socreate(saddr->sa_family, &so, nrp->nr_sotype, 199191783Srmacklem nrp->nr_soproto, td->td_ucred, td); 200191783Srmacklem if (error) { 201191783Srmacklem td->td_ucred = origcred; 202191783Srmacklem return (error); 203191783Srmacklem } 204191783Srmacklem do { 205220752Srmacklem if (error != 0 && pktscale > 2) 206191783Srmacklem pktscale--; 207191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) { 208191783Srmacklem if (nmp != NULL) { 209191783Srmacklem sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 210191783Srmacklem pktscale; 211191783Srmacklem rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 212191783Srmacklem pktscale; 213191783Srmacklem } else { 214191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 215191783Srmacklem } 216191783Srmacklem } else { 217191783Srmacklem if (nrp->nr_sotype != SOCK_STREAM) 218191783Srmacklem panic("nfscon sotype"); 219191783Srmacklem if (nmp != NULL) { 220191783Srmacklem sndreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 221191783Srmacklem sizeof (u_int32_t)) * pktscale; 222191783Srmacklem rcvreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 223191783Srmacklem sizeof (u_int32_t)) * pktscale; 224191783Srmacklem } else { 225191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 226191783Srmacklem } 227191783Srmacklem } 228191783Srmacklem error = soreserve(so, sndreserve, rcvreserve); 229191783Srmacklem } while (error != 0 && pktscale > 2); 230191783Srmacklem soclose(so); 231191783Srmacklem if (error) { 232191783Srmacklem td->td_ucred = origcred; 233191783Srmacklem return (error); 234191783Srmacklem } 235191783Srmacklem 236191783Srmacklem client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog, 237191783Srmacklem nrp->nr_vers, sndreserve, rcvreserve); 238191783Srmacklem CLNT_CONTROL(client, CLSET_WAITCHAN, "newnfsreq"); 239191783Srmacklem if (nmp != NULL) { 240191783Srmacklem if ((nmp->nm_flag & NFSMNT_INT)) 241191783Srmacklem CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one); 242191783Srmacklem if ((nmp->nm_flag & NFSMNT_RESVPORT)) 243191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 244191783Srmacklem if (NFSHASSOFT(nmp)) 245191783Srmacklem retries = nmp->nm_retry; 246191783Srmacklem else 247191783Srmacklem retries = INT_MAX; 248191783Srmacklem } else { 249191783Srmacklem /* 250191783Srmacklem * Three cases: 251191783Srmacklem * - Null RPC callback to client 252191783Srmacklem * - Non-Null RPC callback to client, wait a little longer 253191783Srmacklem * - upcalls to nfsuserd and gssd (clp == NULL) 254191783Srmacklem */ 255191783Srmacklem if (callback_retry_mult == 0) { 256191783Srmacklem retries = NFSV4_UPCALLRETRY; 257191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 258191783Srmacklem } else { 259191783Srmacklem retries = NFSV4_CALLBACKRETRY * callback_retry_mult; 260191783Srmacklem } 261191783Srmacklem } 262191783Srmacklem CLNT_CONTROL(client, CLSET_RETRIES, &retries); 263191783Srmacklem 264191783Srmacklem mtx_lock(&nrp->nr_mtx); 265191783Srmacklem if (nrp->nr_client != NULL) { 266191783Srmacklem /* 267191783Srmacklem * Someone else already connected. 268191783Srmacklem */ 269191783Srmacklem CLNT_RELEASE(client); 270191783Srmacklem } else { 271191783Srmacklem nrp->nr_client = client; 272191783Srmacklem } 273191783Srmacklem 274191783Srmacklem /* 275191783Srmacklem * Protocols that do not require connections may be optionally left 276191783Srmacklem * unconnected for servers that reply from a port other than NFS_PORT. 277191783Srmacklem */ 278191783Srmacklem if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) { 279191783Srmacklem mtx_unlock(&nrp->nr_mtx); 280191783Srmacklem CLNT_CONTROL(client, CLSET_CONNECT, &one); 281191783Srmacklem } else { 282191783Srmacklem mtx_unlock(&nrp->nr_mtx); 283191783Srmacklem } 284191783Srmacklem 285191783Srmacklem /* Restore current thread's credentials. */ 286191783Srmacklem td->td_ucred = origcred; 287191783Srmacklem return (0); 288191783Srmacklem} 289191783Srmacklem 290191783Srmacklem/* 291191783Srmacklem * NFS disconnect. Clean up and unlink. 292191783Srmacklem */ 293191783Srmacklemvoid 294191783Srmacklemnewnfs_disconnect(struct nfssockreq *nrp) 295191783Srmacklem{ 296191783Srmacklem CLIENT *client; 297191783Srmacklem 298191783Srmacklem mtx_lock(&nrp->nr_mtx); 299191783Srmacklem if (nrp->nr_client != NULL) { 300191783Srmacklem client = nrp->nr_client; 301191783Srmacklem nrp->nr_client = NULL; 302191783Srmacklem mtx_unlock(&nrp->nr_mtx); 303191783Srmacklem#ifdef KGSSAPI 304191783Srmacklem rpc_gss_secpurge(client); 305191783Srmacklem#endif 306191783Srmacklem CLNT_CLOSE(client); 307191783Srmacklem CLNT_RELEASE(client); 308191783Srmacklem } else { 309191783Srmacklem mtx_unlock(&nrp->nr_mtx); 310191783Srmacklem } 311191783Srmacklem} 312191783Srmacklem 313191783Srmacklemstatic AUTH * 314191783Srmacklemnfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal, 315191783Srmacklem char *srv_principal, gss_OID mech_oid, struct ucred *cred) 316191783Srmacklem{ 317191783Srmacklem#ifdef KGSSAPI 318191783Srmacklem rpc_gss_service_t svc; 319191783Srmacklem AUTH *auth; 320192616Srmacklem#ifdef notyet 321191783Srmacklem rpc_gss_options_req_t req_options; 322191783Srmacklem#endif 323192616Srmacklem#endif 324191783Srmacklem 325191783Srmacklem switch (secflavour) { 326191783Srmacklem#ifdef KGSSAPI 327191783Srmacklem case RPCSEC_GSS_KRB5: 328191783Srmacklem case RPCSEC_GSS_KRB5I: 329191783Srmacklem case RPCSEC_GSS_KRB5P: 330191783Srmacklem if (!mech_oid) { 331191783Srmacklem if (!rpc_gss_mech_to_oid("kerberosv5", &mech_oid)) 332191783Srmacklem return (NULL); 333191783Srmacklem } 334191783Srmacklem if (secflavour == RPCSEC_GSS_KRB5) 335191783Srmacklem svc = rpc_gss_svc_none; 336191783Srmacklem else if (secflavour == RPCSEC_GSS_KRB5I) 337191783Srmacklem svc = rpc_gss_svc_integrity; 338191783Srmacklem else 339191783Srmacklem svc = rpc_gss_svc_privacy; 340192616Srmacklem#ifdef notyet 341191783Srmacklem req_options.req_flags = GSS_C_MUTUAL_FLAG; 342191783Srmacklem req_options.time_req = 0; 343191783Srmacklem req_options.my_cred = GSS_C_NO_CREDENTIAL; 344191783Srmacklem req_options.input_channel_bindings = NULL; 345191783Srmacklem req_options.enc_type = nfs_keytab_enctype; 346191783Srmacklem 347191783Srmacklem auth = rpc_gss_secfind(nrp->nr_client, cred, 348191783Srmacklem clnt_principal, srv_principal, mech_oid, svc, 349191783Srmacklem &req_options); 350192616Srmacklem#else 351192616Srmacklem /* 352192616Srmacklem * Until changes to the rpcsec_gss code are committed, 353192616Srmacklem * there is no support for host based initiator 354192616Srmacklem * principals. As such, that case cannot yet be handled. 355192616Srmacklem */ 356192616Srmacklem if (clnt_principal == NULL) 357192616Srmacklem auth = rpc_gss_secfind(nrp->nr_client, cred, 358192616Srmacklem srv_principal, mech_oid, svc); 359192616Srmacklem else 360192616Srmacklem auth = NULL; 361192616Srmacklem#endif 362192675Srmacklem if (auth != NULL) 363192675Srmacklem return (auth); 364192675Srmacklem /* fallthrough */ 365192616Srmacklem#endif /* KGSSAPI */ 366191783Srmacklem case AUTH_SYS: 367191783Srmacklem default: 368191783Srmacklem return (authunix_create(cred)); 369191783Srmacklem 370191783Srmacklem } 371191783Srmacklem} 372191783Srmacklem 373191783Srmacklem/* 374191783Srmacklem * Callback from the RPC code to generate up/down notifications. 375191783Srmacklem */ 376191783Srmacklem 377191783Srmacklemstruct nfs_feedback_arg { 378191783Srmacklem struct nfsmount *nf_mount; 379191783Srmacklem int nf_lastmsg; /* last tprintf */ 380191783Srmacklem int nf_tprintfmsg; 381191783Srmacklem struct thread *nf_td; 382191783Srmacklem}; 383191783Srmacklem 384191783Srmacklemstatic void 385191783Srmacklemnfs_feedback(int type, int proc, void *arg) 386191783Srmacklem{ 387191783Srmacklem struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg; 388191783Srmacklem struct nfsmount *nmp = nf->nf_mount; 389191783Srmacklem struct timeval now; 390191783Srmacklem 391191783Srmacklem getmicrouptime(&now); 392191783Srmacklem 393191783Srmacklem switch (type) { 394191783Srmacklem case FEEDBACK_REXMIT2: 395191783Srmacklem case FEEDBACK_RECONNECT: 396191783Srmacklem if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now.tv_sec) { 397191783Srmacklem nfs_down(nmp, nf->nf_td, 398191783Srmacklem "not responding", 0, NFSSTA_TIMEO); 399191783Srmacklem nf->nf_tprintfmsg = TRUE; 400191783Srmacklem nf->nf_lastmsg = now.tv_sec; 401191783Srmacklem } 402191783Srmacklem break; 403191783Srmacklem 404191783Srmacklem case FEEDBACK_OK: 405191783Srmacklem nfs_up(nf->nf_mount, nf->nf_td, 406191783Srmacklem "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg); 407191783Srmacklem break; 408191783Srmacklem } 409191783Srmacklem} 410191783Srmacklem 411191783Srmacklem/* 412191783Srmacklem * newnfs_request - goes something like this 413191783Srmacklem * - does the rpc by calling the krpc layer 414191783Srmacklem * - break down rpc header and return with nfs reply 415191783Srmacklem * nb: always frees up nd_mreq mbuf list 416191783Srmacklem */ 417191783Srmacklemint 418191783Srmacklemnewnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, 419191783Srmacklem struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp, 420191783Srmacklem struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers, 421191783Srmacklem u_char *retsum, int toplevel, u_int64_t *xidp) 422191783Srmacklem{ 423191783Srmacklem u_int32_t *tl; 424191783Srmacklem time_t waituntil; 425195642Srmacklem int i, j, set_uid = 0, set_sigset = 0; 426191783Srmacklem int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS; 427191783Srmacklem u_int16_t procnum; 428191783Srmacklem u_int trylater_delay = 1; 429191783Srmacklem struct nfs_feedback_arg nf; 430191783Srmacklem struct timeval timo, now; 431191783Srmacklem AUTH *auth; 432191783Srmacklem struct rpc_callextra ext; 433191783Srmacklem enum clnt_stat stat; 434191783Srmacklem struct nfsreq *rep = NULL; 435191783Srmacklem char *srv_principal = NULL; 436192675Srmacklem uid_t saved_uid = (uid_t)-1; 437195642Srmacklem sigset_t oldset; 438191783Srmacklem 439191783Srmacklem if (xidp != NULL) 440191783Srmacklem *xidp = 0; 441191783Srmacklem /* Reject requests while attempting a forced unmount. */ 442191783Srmacklem if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) { 443191783Srmacklem m_freem(nd->nd_mreq); 444191783Srmacklem return (ESTALE); 445191783Srmacklem } 446191783Srmacklem 447195642Srmacklem /* For client side interruptible mounts, mask off the signals. */ 448195642Srmacklem if (nmp != NULL && td != NULL && NFSHASINT(nmp)) { 449195642Srmacklem newnfs_set_sigmask(td, &oldset); 450195642Srmacklem set_sigset = 1; 451195642Srmacklem } 452195642Srmacklem 453191783Srmacklem /* 454192675Srmacklem * XXX if not already connected call nfs_connect now. Longer 455192675Srmacklem * term, change nfs_mount to call nfs_connect unconditionally 456192675Srmacklem * and let clnt_reconnect_create handle reconnects. 457192675Srmacklem */ 458192675Srmacklem if (nrp->nr_client == NULL) 459192675Srmacklem newnfs_connect(nmp, nrp, cred, td, 0); 460192675Srmacklem 461192675Srmacklem /* 462191783Srmacklem * For a client side mount, nmp is != NULL and clp == NULL. For 463191783Srmacklem * server calls (callbacks or upcalls), nmp == NULL. 464191783Srmacklem */ 465191783Srmacklem if (clp != NULL) { 466191783Srmacklem NFSLOCKSTATE(); 467191783Srmacklem if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) { 468191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 469191783Srmacklem if (nd->nd_procnum != NFSPROC_NULL) { 470191783Srmacklem if (clp->lc_flags & LCL_GSSINTEGRITY) 471191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 472191783Srmacklem else if (clp->lc_flags & LCL_GSSPRIVACY) 473191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 474191783Srmacklem } 475191783Srmacklem } 476191783Srmacklem NFSUNLOCKSTATE(); 477191783Srmacklem } else if (nmp != NULL && NFSHASKERB(nmp) && 478191783Srmacklem nd->nd_procnum != NFSPROC_NULL) { 479191783Srmacklem if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0) 480191783Srmacklem nd->nd_flag |= ND_USEGSSNAME; 481192675Srmacklem if ((nd->nd_flag & ND_USEGSSNAME) != 0) { 482192675Srmacklem /* 483192675Srmacklem * If there is a client side host based credential, 484192675Srmacklem * use that, otherwise use the system uid, if set. 485192675Srmacklem */ 486192675Srmacklem if (nmp->nm_krbnamelen > 0) { 487192675Srmacklem usegssname = 1; 488192675Srmacklem } else if (nmp->nm_uid != (uid_t)-1) { 489192675Srmacklem saved_uid = cred->cr_uid; 490192675Srmacklem cred->cr_uid = nmp->nm_uid; 491192675Srmacklem set_uid = 1; 492192675Srmacklem } 493192675Srmacklem } else if (nmp->nm_krbnamelen == 0 && 494192675Srmacklem nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) { 495192675Srmacklem /* 496192675Srmacklem * If there is no host based principal name and 497192675Srmacklem * the system uid is set and this is root, use the 498192675Srmacklem * system uid, since root won't have user 499192675Srmacklem * credentials in a credentials cache file. 500192675Srmacklem */ 501192675Srmacklem saved_uid = cred->cr_uid; 502192675Srmacklem cred->cr_uid = nmp->nm_uid; 503192675Srmacklem set_uid = 1; 504192675Srmacklem } 505191783Srmacklem if (NFSHASINTEGRITY(nmp)) 506191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 507191783Srmacklem else if (NFSHASPRIVACY(nmp)) 508191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 509191783Srmacklem else 510191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 511191783Srmacklem srv_principal = NFSMNT_SRVKRBNAME(nmp); 512191783Srmacklem } 513191783Srmacklem 514191783Srmacklem if (nmp != NULL) { 515191783Srmacklem bzero(&nf, sizeof(struct nfs_feedback_arg)); 516191783Srmacklem nf.nf_mount = nmp; 517191783Srmacklem nf.nf_td = td; 518191783Srmacklem getmicrouptime(&now); 519191783Srmacklem nf.nf_lastmsg = now.tv_sec - 520191783Srmacklem ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay)); 521191783Srmacklem } 522191783Srmacklem 523192181Srmacklem if (nd->nd_procnum == NFSPROC_NULL) 524192181Srmacklem auth = authnone_create(); 525192181Srmacklem else if (usegssname) 526191783Srmacklem auth = nfs_getauth(nrp, secflavour, nmp->nm_krbname, 527191783Srmacklem srv_principal, NULL, cred); 528191783Srmacklem else 529191783Srmacklem auth = nfs_getauth(nrp, secflavour, NULL, 530191783Srmacklem srv_principal, NULL, cred); 531192675Srmacklem if (set_uid) 532192675Srmacklem cred->cr_uid = saved_uid; 533191783Srmacklem if (auth == NULL) { 534191783Srmacklem m_freem(nd->nd_mreq); 535195642Srmacklem if (set_sigset) 536195642Srmacklem newnfs_restore_sigmask(td, &oldset); 537191783Srmacklem return (EACCES); 538191783Srmacklem } 539191783Srmacklem bzero(&ext, sizeof(ext)); 540191783Srmacklem ext.rc_auth = auth; 541191783Srmacklem if (nmp != NULL) { 542191783Srmacklem ext.rc_feedback = nfs_feedback; 543191783Srmacklem ext.rc_feedback_arg = &nf; 544191783Srmacklem } 545191783Srmacklem 546191783Srmacklem procnum = nd->nd_procnum; 547191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && 548192181Srmacklem nd->nd_procnum != NFSPROC_NULL && 549191783Srmacklem nd->nd_procnum != NFSV4PROC_CBCOMPOUND) 550191783Srmacklem procnum = NFSV4PROC_COMPOUND; 551191783Srmacklem 552191783Srmacklem if (nmp != NULL) { 553191783Srmacklem NFSINCRGLOBAL(newnfsstats.rpcrequests); 554207764Srmacklem 555207764Srmacklem /* Map the procnum to the old NFSv2 one, as required. */ 556207764Srmacklem if ((nd->nd_flag & ND_NFSV2) != 0) { 557207764Srmacklem if (nd->nd_procnum < NFS_V3NPROCS) 558207764Srmacklem procnum = nfsv2_procid[nd->nd_procnum]; 559207764Srmacklem else 560207764Srmacklem procnum = NFSV2PROC_NOOP; 561207764Srmacklem } 562207764Srmacklem 563191783Srmacklem /* 564191783Srmacklem * Now only used for the R_DONTRECOVER case, but until that is 565191783Srmacklem * supported within the krpc code, I need to keep a queue of 566191783Srmacklem * outstanding RPCs for nfsv4 client requests. 567191783Srmacklem */ 568191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND) 569191783Srmacklem MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq), 570191783Srmacklem M_NFSDREQ, M_WAITOK); 571191783Srmacklem } 572191783Srmacklem trycnt = 0; 573191783Srmacklemtryagain: 574191783Srmacklem if (nmp == NULL) { 575191783Srmacklem timo.tv_usec = 0; 576191783Srmacklem if (clp == NULL) 577191783Srmacklem timo.tv_sec = NFSV4_UPCALLTIMEO; 578191783Srmacklem else 579191783Srmacklem timo.tv_sec = NFSV4_CALLBACKTIMEO; 580191783Srmacklem } else { 581191783Srmacklem if (nrp->nr_sotype != SOCK_DGRAM) { 582191783Srmacklem timo.tv_usec = 0; 583191783Srmacklem if ((nmp->nm_flag & NFSMNT_NFSV4)) 584191783Srmacklem timo.tv_sec = INT_MAX; 585191783Srmacklem else 586191783Srmacklem timo.tv_sec = NFS_TCPTIMEO; 587191783Srmacklem } else { 588191783Srmacklem timo.tv_sec = nmp->nm_timeo / NFS_HZ; 589191783Srmacklem timo.tv_usec = (nmp->nm_timeo * 1000000) / NFS_HZ; 590191783Srmacklem } 591191783Srmacklem 592191783Srmacklem if (rep != NULL) { 593191783Srmacklem rep->r_flags = 0; 594191783Srmacklem rep->r_nmp = nmp; 595191783Srmacklem /* 596191783Srmacklem * Chain request into list of outstanding requests. 597191783Srmacklem */ 598191783Srmacklem NFSLOCKREQ(); 599191783Srmacklem TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain); 600191783Srmacklem NFSUNLOCKREQ(); 601191783Srmacklem } 602191783Srmacklem } 603191783Srmacklem 604191783Srmacklem nd->nd_mrep = NULL; 605191783Srmacklem stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, nd->nd_mreq, 606191783Srmacklem &nd->nd_mrep, timo); 607191783Srmacklem 608191783Srmacklem if (rep != NULL) { 609191783Srmacklem /* 610191783Srmacklem * RPC done, unlink the request. 611191783Srmacklem */ 612191783Srmacklem NFSLOCKREQ(); 613191783Srmacklem TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 614191783Srmacklem NFSUNLOCKREQ(); 615191783Srmacklem } 616191783Srmacklem 617191783Srmacklem /* 618191783Srmacklem * If there was a successful reply and a tprintf msg. 619191783Srmacklem * tprintf a response. 620191783Srmacklem */ 621191783Srmacklem if (stat == RPC_SUCCESS) { 622191783Srmacklem error = 0; 623191783Srmacklem } else if (stat == RPC_TIMEDOUT) { 624191783Srmacklem error = ETIMEDOUT; 625191783Srmacklem } else if (stat == RPC_VERSMISMATCH) { 626191783Srmacklem error = EOPNOTSUPP; 627191783Srmacklem } else if (stat == RPC_PROGVERSMISMATCH) { 628191783Srmacklem error = EPROTONOSUPPORT; 629191783Srmacklem } else { 630191783Srmacklem error = EACCES; 631191783Srmacklem } 632191783Srmacklem if (error) { 633191783Srmacklem m_freem(nd->nd_mreq); 634191783Srmacklem AUTH_DESTROY(auth); 635191783Srmacklem if (rep != NULL) 636191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 637195642Srmacklem if (set_sigset) 638195642Srmacklem newnfs_restore_sigmask(td, &oldset); 639191783Srmacklem return (error); 640191783Srmacklem } 641191783Srmacklem 642191783Srmacklem KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 643191783Srmacklem 644192695Srmacklem /* 645192695Srmacklem * Search for any mbufs that are not a multiple of 4 bytes long 646192695Srmacklem * or with m_data not longword aligned. 647192695Srmacklem * These could cause pointer alignment problems, so copy them to 648192695Srmacklem * well aligned mbufs. 649192695Srmacklem */ 650192695Srmacklem newnfs_realign(&nd->nd_mrep); 651191783Srmacklem nd->nd_md = nd->nd_mrep; 652191783Srmacklem nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 653191783Srmacklem nd->nd_repstat = 0; 654191783Srmacklem if (nd->nd_procnum != NFSPROC_NULL) { 655191783Srmacklem /* 656191783Srmacklem * and now the actual NFS xdr. 657191783Srmacklem */ 658191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 659191783Srmacklem nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl); 660191783Srmacklem if (nd->nd_repstat != 0) { 661191783Srmacklem if ((nd->nd_repstat == NFSERR_DELAY && 662191783Srmacklem (nd->nd_flag & ND_NFSV4) && 663191783Srmacklem nd->nd_procnum != NFSPROC_SETATTR && 664191783Srmacklem nd->nd_procnum != NFSPROC_READ && 665191783Srmacklem nd->nd_procnum != NFSPROC_WRITE && 666191783Srmacklem nd->nd_procnum != NFSPROC_OPEN && 667191783Srmacklem nd->nd_procnum != NFSPROC_CREATE && 668191783Srmacklem nd->nd_procnum != NFSPROC_OPENCONFIRM && 669191783Srmacklem nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 670191783Srmacklem nd->nd_procnum != NFSPROC_CLOSE && 671191783Srmacklem nd->nd_procnum != NFSPROC_LOCK && 672191783Srmacklem nd->nd_procnum != NFSPROC_LOCKU) || 673191783Srmacklem (nd->nd_repstat == NFSERR_DELAY && 674191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) || 675191783Srmacklem nd->nd_repstat == NFSERR_RESOURCE) { 676191783Srmacklem if (trylater_delay > NFS_TRYLATERDEL) 677191783Srmacklem trylater_delay = NFS_TRYLATERDEL; 678191783Srmacklem waituntil = NFSD_MONOSEC + trylater_delay; 679191783Srmacklem while (NFSD_MONOSEC < waituntil) 680207170Srmacklem (void) nfs_catnap(PZERO, 0, "nfstry"); 681191783Srmacklem trylater_delay *= 2; 682191783Srmacklem goto tryagain; 683191783Srmacklem } 684191783Srmacklem 685191783Srmacklem /* 686191783Srmacklem * If the File Handle was stale, invalidate the 687191783Srmacklem * lookup cache, just in case. 688191783Srmacklem * (vp != NULL implies a client side call) 689191783Srmacklem */ 690191783Srmacklem if (nd->nd_repstat == ESTALE && vp != NULL) { 691191783Srmacklem cache_purge(vp); 692191783Srmacklem if (ncl_call_invalcaches != NULL) 693191783Srmacklem (*ncl_call_invalcaches)(vp); 694191783Srmacklem } 695191783Srmacklem } 696191783Srmacklem 697191783Srmacklem /* 698191783Srmacklem * Get rid of the tag, return count, and PUTFH result for V4. 699191783Srmacklem */ 700191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 701191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 702191783Srmacklem i = fxdr_unsigned(int, *tl); 703191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 704191783Srmacklem if (error) 705191783Srmacklem goto nfsmout; 706191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 707191783Srmacklem i = fxdr_unsigned(int, *++tl); 708191783Srmacklem 709191783Srmacklem /* 710191783Srmacklem * If the first op's status is non-zero, mark that 711191783Srmacklem * there is no more data to process. 712191783Srmacklem */ 713191783Srmacklem if (*++tl) 714191783Srmacklem nd->nd_flag |= ND_NOMOREDATA; 715191783Srmacklem 716191783Srmacklem /* 717191783Srmacklem * If the first op is Putfh, throw its results away 718191783Srmacklem * and toss the op# and status for the first op. 719191783Srmacklem */ 720191783Srmacklem if (nmp != NULL && i == NFSV4OP_PUTFH && *tl == 0) { 721191783Srmacklem NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 722191783Srmacklem i = fxdr_unsigned(int, *tl++); 723191783Srmacklem j = fxdr_unsigned(int, *tl); 724191783Srmacklem /* 725191783Srmacklem * All Compounds that do an Op that must 726191783Srmacklem * be in sequence consist of NFSV4OP_PUTFH 727191783Srmacklem * followed by one of these. As such, we 728191783Srmacklem * can determine if the seqid# should be 729191783Srmacklem * incremented, here. 730191783Srmacklem */ 731191783Srmacklem if ((i == NFSV4OP_OPEN || 732191783Srmacklem i == NFSV4OP_OPENCONFIRM || 733191783Srmacklem i == NFSV4OP_OPENDOWNGRADE || 734191783Srmacklem i == NFSV4OP_CLOSE || 735191783Srmacklem i == NFSV4OP_LOCK || 736191783Srmacklem i == NFSV4OP_LOCKU) && 737191783Srmacklem (j == 0 || 738191783Srmacklem (j != NFSERR_STALECLIENTID && 739191783Srmacklem j != NFSERR_STALESTATEID && 740191783Srmacklem j != NFSERR_BADSTATEID && 741191783Srmacklem j != NFSERR_BADSEQID && 742191783Srmacklem j != NFSERR_BADXDR && 743191783Srmacklem j != NFSERR_RESOURCE && 744191783Srmacklem j != NFSERR_NOFILEHANDLE))) 745191783Srmacklem nd->nd_flag |= ND_INCRSEQID; 746191783Srmacklem /* 747191783Srmacklem * If the first op's status is non-zero, mark 748191783Srmacklem * that there is no more data to process. 749191783Srmacklem */ 750191783Srmacklem if (j) 751191783Srmacklem nd->nd_flag |= ND_NOMOREDATA; 752191783Srmacklem } 753191783Srmacklem 754191783Srmacklem /* 755191783Srmacklem * If R_DONTRECOVER is set, replace the stale error 756191783Srmacklem * reply, so that recovery isn't initiated. 757191783Srmacklem */ 758191783Srmacklem if ((nd->nd_repstat == NFSERR_STALECLIENTID || 759191783Srmacklem nd->nd_repstat == NFSERR_STALESTATEID) && 760191783Srmacklem rep != NULL && (rep->r_flags & R_DONTRECOVER)) 761191783Srmacklem nd->nd_repstat = NFSERR_STALEDONTRECOVER; 762191783Srmacklem } 763192181Srmacklem } 764191783Srmacklem 765192181Srmacklem m_freem(nd->nd_mreq); 766192181Srmacklem AUTH_DESTROY(auth); 767192181Srmacklem if (rep != NULL) 768192181Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 769195642Srmacklem if (set_sigset) 770195642Srmacklem newnfs_restore_sigmask(td, &oldset); 771192181Srmacklem return (0); 772191783Srmacklemnfsmout: 773191783Srmacklem mbuf_freem(nd->nd_mrep); 774191783Srmacklem mbuf_freem(nd->nd_mreq); 775191783Srmacklem AUTH_DESTROY(auth); 776191783Srmacklem if (rep != NULL) 777191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 778195642Srmacklem if (set_sigset) 779195642Srmacklem newnfs_restore_sigmask(td, &oldset); 780191783Srmacklem return (error); 781191783Srmacklem} 782191783Srmacklem 783191783Srmacklem/* 784191783Srmacklem * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 785191783Srmacklem * wait for all requests to complete. This is used by forced unmounts 786191783Srmacklem * to terminate any outstanding RPCs. 787191783Srmacklem */ 788191783Srmacklemint 789191783Srmacklemnewnfs_nmcancelreqs(struct nfsmount *nmp) 790191783Srmacklem{ 791191783Srmacklem 792191783Srmacklem if (nmp->nm_sockreq.nr_client != NULL) 793191783Srmacklem CLNT_CLOSE(nmp->nm_sockreq.nr_client); 794191783Srmacklem return (0); 795191783Srmacklem} 796191783Srmacklem 797191783Srmacklem/* 798191783Srmacklem * Any signal that can interrupt an NFS operation in an intr mount 799191783Srmacklem * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 800191783Srmacklem */ 801191783Srmacklemint newnfs_sig_set[] = { 802191783Srmacklem SIGINT, 803191783Srmacklem SIGTERM, 804191783Srmacklem SIGHUP, 805191783Srmacklem SIGKILL, 806191783Srmacklem SIGSTOP, 807191783Srmacklem SIGQUIT 808191783Srmacklem}; 809191783Srmacklem 810191783Srmacklem/* 811191783Srmacklem * Check to see if one of the signals in our subset is pending on 812191783Srmacklem * the process (in an intr mount). 813191783Srmacklem */ 814191783Srmacklemstatic int 815191783Srmacklemnfs_sig_pending(sigset_t set) 816191783Srmacklem{ 817191783Srmacklem int i; 818191783Srmacklem 819191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) 820191783Srmacklem if (SIGISMEMBER(set, newnfs_sig_set[i])) 821191783Srmacklem return (1); 822191783Srmacklem return (0); 823191783Srmacklem} 824191783Srmacklem 825191783Srmacklem/* 826191783Srmacklem * The set/restore sigmask functions are used to (temporarily) overwrite 827191783Srmacklem * the process p_sigmask during an RPC call (for example). These are also 828191783Srmacklem * used in other places in the NFS client that might tsleep(). 829191783Srmacklem */ 830191783Srmacklemvoid 831191783Srmacklemnewnfs_set_sigmask(struct thread *td, sigset_t *oldset) 832191783Srmacklem{ 833191783Srmacklem sigset_t newset; 834191783Srmacklem int i; 835191783Srmacklem struct proc *p; 836191783Srmacklem 837191783Srmacklem SIGFILLSET(newset); 838191783Srmacklem if (td == NULL) 839191783Srmacklem td = curthread; /* XXX */ 840191783Srmacklem p = td->td_proc; 841191783Srmacklem /* Remove the NFS set of signals from newset */ 842191783Srmacklem PROC_LOCK(p); 843191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 844191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) { 845191783Srmacklem /* 846191783Srmacklem * But make sure we leave the ones already masked 847191783Srmacklem * by the process, ie. remove the signal from the 848191783Srmacklem * temporary signalmask only if it wasn't already 849191783Srmacklem * in p_sigmask. 850191783Srmacklem */ 851191783Srmacklem if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 852191783Srmacklem !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 853191783Srmacklem SIGDELSET(newset, newnfs_sig_set[i]); 854191783Srmacklem } 855191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 856191783Srmacklem PROC_UNLOCK(p); 857191783Srmacklem kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 0); 858191783Srmacklem} 859191783Srmacklem 860191783Srmacklemvoid 861191783Srmacklemnewnfs_restore_sigmask(struct thread *td, sigset_t *set) 862191783Srmacklem{ 863191783Srmacklem if (td == NULL) 864191783Srmacklem td = curthread; /* XXX */ 865191783Srmacklem kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 866191783Srmacklem} 867191783Srmacklem 868191783Srmacklem/* 869191783Srmacklem * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 870191783Srmacklem * old one after msleep() returns. 871191783Srmacklem */ 872191783Srmacklemint 873191783Srmacklemnewnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 874191783Srmacklem{ 875191783Srmacklem sigset_t oldset; 876191783Srmacklem int error; 877191783Srmacklem struct proc *p; 878191783Srmacklem 879191783Srmacklem if ((priority & PCATCH) == 0) 880191783Srmacklem return msleep(ident, mtx, priority, wmesg, timo); 881191783Srmacklem if (td == NULL) 882191783Srmacklem td = curthread; /* XXX */ 883191783Srmacklem newnfs_set_sigmask(td, &oldset); 884191783Srmacklem error = msleep(ident, mtx, priority, wmesg, timo); 885191783Srmacklem newnfs_restore_sigmask(td, &oldset); 886191783Srmacklem p = td->td_proc; 887191783Srmacklem return (error); 888191783Srmacklem} 889191783Srmacklem 890191783Srmacklem/* 891191783Srmacklem * Test for a termination condition pending on the process. 892191783Srmacklem * This is used for NFSMNT_INT mounts. 893191783Srmacklem */ 894191783Srmacklemint 895191783Srmacklemnewnfs_sigintr(struct nfsmount *nmp, struct thread *td) 896191783Srmacklem{ 897191783Srmacklem struct proc *p; 898191783Srmacklem sigset_t tmpset; 899191783Srmacklem 900191783Srmacklem /* Terminate all requests while attempting a forced unmount. */ 901191783Srmacklem if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 902191783Srmacklem return (EIO); 903191783Srmacklem if (!(nmp->nm_flag & NFSMNT_INT)) 904191783Srmacklem return (0); 905191783Srmacklem if (td == NULL) 906191783Srmacklem return (0); 907191783Srmacklem p = td->td_proc; 908191783Srmacklem PROC_LOCK(p); 909191783Srmacklem tmpset = p->p_siglist; 910191783Srmacklem SIGSETOR(tmpset, td->td_siglist); 911191783Srmacklem SIGSETNAND(tmpset, td->td_sigmask); 912191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 913191783Srmacklem SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 914191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 915191783Srmacklem if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 916191783Srmacklem && nfs_sig_pending(tmpset)) { 917191783Srmacklem PROC_UNLOCK(p); 918191783Srmacklem return (EINTR); 919191783Srmacklem } 920191783Srmacklem PROC_UNLOCK(p); 921191783Srmacklem return (0); 922191783Srmacklem} 923191783Srmacklem 924191783Srmacklemstatic int 925191783Srmacklemnfs_msg(struct thread *td, const char *server, const char *msg, int error) 926191783Srmacklem{ 927191783Srmacklem struct proc *p; 928191783Srmacklem 929191783Srmacklem p = td ? td->td_proc : NULL; 930191783Srmacklem if (error) { 931191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n", 932191783Srmacklem server, msg, error); 933191783Srmacklem } else { 934191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg); 935191783Srmacklem } 936191783Srmacklem return (0); 937191783Srmacklem} 938191783Srmacklem 939191783Srmacklemstatic void 940191783Srmacklemnfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 941191783Srmacklem int error, int flags) 942191783Srmacklem{ 943191783Srmacklem if (nmp == NULL) 944191783Srmacklem return; 945191783Srmacklem mtx_lock(&nmp->nm_mtx); 946191783Srmacklem if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 947191783Srmacklem nmp->nm_state |= NFSSTA_TIMEO; 948191783Srmacklem mtx_unlock(&nmp->nm_mtx); 949191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 950191783Srmacklem VQ_NOTRESP, 0); 951191783Srmacklem } else 952191783Srmacklem mtx_unlock(&nmp->nm_mtx); 953191783Srmacklem mtx_lock(&nmp->nm_mtx); 954191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 955191783Srmacklem nmp->nm_state |= NFSSTA_LOCKTIMEO; 956191783Srmacklem mtx_unlock(&nmp->nm_mtx); 957191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 958191783Srmacklem VQ_NOTRESPLOCK, 0); 959191783Srmacklem } else 960191783Srmacklem mtx_unlock(&nmp->nm_mtx); 961191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 962191783Srmacklem} 963191783Srmacklem 964191783Srmacklemstatic void 965191783Srmacklemnfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 966191783Srmacklem int flags, int tprintfmsg) 967191783Srmacklem{ 968191783Srmacklem if (nmp == NULL) 969191783Srmacklem return; 970191783Srmacklem if (tprintfmsg) { 971191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 972191783Srmacklem } 973191783Srmacklem 974191783Srmacklem mtx_lock(&nmp->nm_mtx); 975191783Srmacklem if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 976191783Srmacklem nmp->nm_state &= ~NFSSTA_TIMEO; 977191783Srmacklem mtx_unlock(&nmp->nm_mtx); 978191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 979191783Srmacklem VQ_NOTRESP, 1); 980191783Srmacklem } else 981191783Srmacklem mtx_unlock(&nmp->nm_mtx); 982191783Srmacklem 983191783Srmacklem mtx_lock(&nmp->nm_mtx); 984191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 985191783Srmacklem nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 986191783Srmacklem mtx_unlock(&nmp->nm_mtx); 987191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 988191783Srmacklem VQ_NOTRESPLOCK, 1); 989191783Srmacklem } else 990191783Srmacklem mtx_unlock(&nmp->nm_mtx); 991191783Srmacklem} 992191783Srmacklem 993