nfs_commonkrpc.c revision 224117
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 224117 2011-07-16 20:53:27Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Socket operations for use by nfs 39191783Srmacklem */ 40191783Srmacklem 41191783Srmacklem#include "opt_inet6.h" 42223280Srmacklem#include "opt_kdtrace.h" 43191783Srmacklem#include "opt_kgssapi.h" 44191783Srmacklem#include "opt_nfs.h" 45191783Srmacklem 46191783Srmacklem#include <sys/param.h> 47191783Srmacklem#include <sys/systm.h> 48191783Srmacklem#include <sys/kernel.h> 49191783Srmacklem#include <sys/limits.h> 50191783Srmacklem#include <sys/lock.h> 51191783Srmacklem#include <sys/malloc.h> 52191783Srmacklem#include <sys/mbuf.h> 53191783Srmacklem#include <sys/mount.h> 54191783Srmacklem#include <sys/mutex.h> 55191783Srmacklem#include <sys/proc.h> 56191783Srmacklem#include <sys/signalvar.h> 57191783Srmacklem#include <sys/syscallsubr.h> 58191783Srmacklem#include <sys/sysctl.h> 59191783Srmacklem#include <sys/syslog.h> 60191783Srmacklem#include <sys/vnode.h> 61191783Srmacklem 62191783Srmacklem#include <rpc/rpc.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 */ 80223280Srmacklemuint32_t nfscl_nfs2_start_probes[NFS_NPROCS + 1]; 81223280Srmacklemuint32_t nfscl_nfs2_done_probes[NFS_NPROCS + 1]; 82223280Srmacklem 83223280Srmacklemuint32_t nfscl_nfs3_start_probes[NFS_NPROCS + 1]; 84223280Srmacklemuint32_t nfscl_nfs3_done_probes[NFS_NPROCS + 1]; 85223280Srmacklem 86223280Srmacklemuint32_t nfscl_nfs4_start_probes[NFS_NPROCS + 1]; 87223280Srmacklemuint32_t nfscl_nfs4_done_probes[NFS_NPROCS + 1]; 88223280Srmacklem#endif 89223280Srmacklem 90191783SrmacklemNFSSTATESPINLOCK; 91191783SrmacklemNFSREQSPINLOCK; 92191783Srmacklemextern struct nfsstats newnfsstats; 93191783Srmacklemextern struct nfsreqhead nfsd_reqq; 94191783Srmacklemextern int nfscl_ticks; 95191783Srmacklemextern void (*ncl_call_invalcaches)(struct vnode *); 96191783Srmacklem 97191783Srmacklemstatic int nfsrv_gsscallbackson = 0; 98191783Srmacklemstatic int nfs_bufpackets = 4; 99191783Srmacklemstatic int nfs_reconnects; 100191783Srmacklemstatic int nfs3_jukebox_delay = 10; 101191783Srmacklemstatic int nfs_skip_wcc_data_onerr = 1; 102191783Srmacklemstatic int nfs_keytab_enctype = ETYPE_DES_CBC_CRC; 103191783Srmacklem 104221973SrmacklemSYSCTL_DECL(_vfs_nfs); 105191783Srmacklem 106221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0, 107191783Srmacklem "Buffer reservation size 2 < x < 64"); 108221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0, 109191783Srmacklem "Number of times the nfs client has had to reconnect"); 110221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0, 111191783Srmacklem "Number of seconds to delay a retry after receiving EJUKEBOX"); 112221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0, 113191783Srmacklem "Disable weak cache consistency checking when server returns an error"); 114221973SrmacklemSYSCTL_INT(_vfs_nfs, OID_AUTO, keytab_enctype, CTLFLAG_RW, &nfs_keytab_enctype, 0, 115191783Srmacklem "Encryption type for the keytab entry used by nfs"); 116191783Srmacklem 117191783Srmacklemstatic void nfs_down(struct nfsmount *, struct thread *, const char *, 118191783Srmacklem int, int); 119191783Srmacklemstatic void nfs_up(struct nfsmount *, struct thread *, const char *, 120191783Srmacklem int, int); 121191783Srmacklemstatic int nfs_msg(struct thread *, const char *, const char *, int); 122191783Srmacklem 123191783Srmacklemstruct nfs_cached_auth { 124191783Srmacklem int ca_refs; /* refcount, including 1 from the cache */ 125191783Srmacklem uid_t ca_uid; /* uid that corresponds to this auth */ 126191783Srmacklem AUTH *ca_auth; /* RPC auth handle */ 127191783Srmacklem}; 128191783Srmacklem 129207764Srmacklemstatic int nfsv2_procid[NFS_V3NPROCS] = { 130207764Srmacklem NFSV2PROC_NULL, 131207764Srmacklem NFSV2PROC_GETATTR, 132207764Srmacklem NFSV2PROC_SETATTR, 133207764Srmacklem NFSV2PROC_LOOKUP, 134207764Srmacklem NFSV2PROC_NOOP, 135207764Srmacklem NFSV2PROC_READLINK, 136207764Srmacklem NFSV2PROC_READ, 137207764Srmacklem NFSV2PROC_WRITE, 138207764Srmacklem NFSV2PROC_CREATE, 139207764Srmacklem NFSV2PROC_MKDIR, 140207764Srmacklem NFSV2PROC_SYMLINK, 141207764Srmacklem NFSV2PROC_CREATE, 142207764Srmacklem NFSV2PROC_REMOVE, 143207764Srmacklem NFSV2PROC_RMDIR, 144207764Srmacklem NFSV2PROC_RENAME, 145207764Srmacklem NFSV2PROC_LINK, 146207764Srmacklem NFSV2PROC_READDIR, 147207764Srmacklem NFSV2PROC_NOOP, 148207764Srmacklem NFSV2PROC_STATFS, 149207764Srmacklem NFSV2PROC_NOOP, 150207764Srmacklem NFSV2PROC_NOOP, 151207764Srmacklem NFSV2PROC_NOOP, 152207764Srmacklem}; 153207764Srmacklem 154191783Srmacklem/* 155191783Srmacklem * Initialize sockets and congestion for a new NFS connection. 156191783Srmacklem * We do not free the sockaddr if error. 157191783Srmacklem */ 158191783Srmacklemint 159191783Srmacklemnewnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp, 160191783Srmacklem struct ucred *cred, NFSPROC_T *p, int callback_retry_mult) 161191783Srmacklem{ 162191783Srmacklem int rcvreserve, sndreserve; 163191783Srmacklem int pktscale; 164191783Srmacklem struct sockaddr *saddr; 165191783Srmacklem struct ucred *origcred; 166191783Srmacklem CLIENT *client; 167191783Srmacklem struct netconfig *nconf; 168191783Srmacklem struct socket *so; 169224086Szack int one = 1, retries, error = 0; 170191783Srmacklem struct thread *td = curthread; 171191783Srmacklem 172191783Srmacklem /* 173191783Srmacklem * We need to establish the socket using the credentials of 174191783Srmacklem * the mountpoint. Some parts of this process (such as 175191783Srmacklem * sobind() and soconnect()) will use the curent thread's 176191783Srmacklem * credential instead of the socket credential. To work 177191783Srmacklem * around this, temporarily change the current thread's 178191783Srmacklem * credential to that of the mountpoint. 179191783Srmacklem * 180191783Srmacklem * XXX: It would be better to explicitly pass the correct 181191783Srmacklem * credential to sobind() and soconnect(). 182191783Srmacklem */ 183191783Srmacklem origcred = td->td_ucred; 184191783Srmacklem 185191783Srmacklem /* 186191783Srmacklem * Use the credential in nr_cred, if not NULL. 187191783Srmacklem */ 188191783Srmacklem if (nrp->nr_cred != NULL) 189191783Srmacklem td->td_ucred = nrp->nr_cred; 190191783Srmacklem else 191191783Srmacklem td->td_ucred = cred; 192191783Srmacklem saddr = nrp->nr_nam; 193191783Srmacklem 194191783Srmacklem if (saddr->sa_family == AF_INET) 195191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 196191783Srmacklem nconf = getnetconfigent("udp"); 197191783Srmacklem else 198191783Srmacklem nconf = getnetconfigent("tcp"); 199191783Srmacklem else 200191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) 201191783Srmacklem nconf = getnetconfigent("udp6"); 202191783Srmacklem else 203191783Srmacklem nconf = getnetconfigent("tcp6"); 204191783Srmacklem 205191783Srmacklem pktscale = nfs_bufpackets; 206191783Srmacklem if (pktscale < 2) 207191783Srmacklem pktscale = 2; 208191783Srmacklem if (pktscale > 64) 209191783Srmacklem pktscale = 64; 210191783Srmacklem /* 211191783Srmacklem * soreserve() can fail if sb_max is too small, so shrink pktscale 212191783Srmacklem * and try again if there is an error. 213191783Srmacklem * Print a log message suggesting increasing sb_max. 214191783Srmacklem * Creating a socket and doing this is necessary since, if the 215191783Srmacklem * reservation sizes are too large and will make soreserve() fail, 216191783Srmacklem * the connection will work until a large send is attempted and 217191783Srmacklem * then it will loop in the krpc code. 218191783Srmacklem */ 219191783Srmacklem so = NULL; 220191783Srmacklem saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *); 221191783Srmacklem error = socreate(saddr->sa_family, &so, nrp->nr_sotype, 222191783Srmacklem nrp->nr_soproto, td->td_ucred, td); 223191783Srmacklem if (error) { 224191783Srmacklem td->td_ucred = origcred; 225224086Szack goto out; 226191783Srmacklem } 227191783Srmacklem do { 228220752Srmacklem if (error != 0 && pktscale > 2) 229191783Srmacklem pktscale--; 230191783Srmacklem if (nrp->nr_sotype == SOCK_DGRAM) { 231191783Srmacklem if (nmp != NULL) { 232191783Srmacklem sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 233191783Srmacklem pktscale; 234191783Srmacklem rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 235191783Srmacklem pktscale; 236191783Srmacklem } else { 237191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 238191783Srmacklem } 239191783Srmacklem } else { 240191783Srmacklem if (nrp->nr_sotype != SOCK_STREAM) 241191783Srmacklem panic("nfscon sotype"); 242191783Srmacklem if (nmp != NULL) { 243191783Srmacklem sndreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 244191783Srmacklem sizeof (u_int32_t)) * pktscale; 245191783Srmacklem rcvreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 246191783Srmacklem sizeof (u_int32_t)) * pktscale; 247191783Srmacklem } else { 248191783Srmacklem sndreserve = rcvreserve = 1024 * pktscale; 249191783Srmacklem } 250191783Srmacklem } 251191783Srmacklem error = soreserve(so, sndreserve, rcvreserve); 252191783Srmacklem } while (error != 0 && pktscale > 2); 253191783Srmacklem soclose(so); 254191783Srmacklem if (error) { 255191783Srmacklem td->td_ucred = origcred; 256224086Szack goto out; 257191783Srmacklem } 258191783Srmacklem 259191783Srmacklem client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog, 260191783Srmacklem nrp->nr_vers, sndreserve, rcvreserve); 261191783Srmacklem CLNT_CONTROL(client, CLSET_WAITCHAN, "newnfsreq"); 262191783Srmacklem if (nmp != NULL) { 263191783Srmacklem if ((nmp->nm_flag & NFSMNT_INT)) 264191783Srmacklem CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one); 265191783Srmacklem if ((nmp->nm_flag & NFSMNT_RESVPORT)) 266191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 267191783Srmacklem if (NFSHASSOFT(nmp)) 268191783Srmacklem retries = nmp->nm_retry; 269191783Srmacklem else 270191783Srmacklem retries = INT_MAX; 271191783Srmacklem } else { 272191783Srmacklem /* 273191783Srmacklem * Three cases: 274191783Srmacklem * - Null RPC callback to client 275191783Srmacklem * - Non-Null RPC callback to client, wait a little longer 276191783Srmacklem * - upcalls to nfsuserd and gssd (clp == NULL) 277191783Srmacklem */ 278191783Srmacklem if (callback_retry_mult == 0) { 279191783Srmacklem retries = NFSV4_UPCALLRETRY; 280191783Srmacklem CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 281191783Srmacklem } else { 282191783Srmacklem retries = NFSV4_CALLBACKRETRY * callback_retry_mult; 283191783Srmacklem } 284191783Srmacklem } 285191783Srmacklem CLNT_CONTROL(client, CLSET_RETRIES, &retries); 286191783Srmacklem 287191783Srmacklem mtx_lock(&nrp->nr_mtx); 288191783Srmacklem if (nrp->nr_client != NULL) { 289191783Srmacklem /* 290191783Srmacklem * Someone else already connected. 291191783Srmacklem */ 292191783Srmacklem CLNT_RELEASE(client); 293191783Srmacklem } else { 294191783Srmacklem nrp->nr_client = client; 295191783Srmacklem } 296191783Srmacklem 297191783Srmacklem /* 298191783Srmacklem * Protocols that do not require connections may be optionally left 299191783Srmacklem * unconnected for servers that reply from a port other than NFS_PORT. 300191783Srmacklem */ 301191783Srmacklem if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) { 302191783Srmacklem mtx_unlock(&nrp->nr_mtx); 303191783Srmacklem CLNT_CONTROL(client, CLSET_CONNECT, &one); 304191783Srmacklem } else { 305191783Srmacklem mtx_unlock(&nrp->nr_mtx); 306191783Srmacklem } 307191783Srmacklem 308191783Srmacklem /* Restore current thread's credentials. */ 309191783Srmacklem td->td_ucred = origcred; 310224086Szack 311224086Szackout: 312224086Szack NFSEXITCODE(error); 313224086Szack return (error); 314191783Srmacklem} 315191783Srmacklem 316191783Srmacklem/* 317191783Srmacklem * NFS disconnect. Clean up and unlink. 318191783Srmacklem */ 319191783Srmacklemvoid 320191783Srmacklemnewnfs_disconnect(struct nfssockreq *nrp) 321191783Srmacklem{ 322191783Srmacklem CLIENT *client; 323191783Srmacklem 324191783Srmacklem mtx_lock(&nrp->nr_mtx); 325191783Srmacklem if (nrp->nr_client != NULL) { 326191783Srmacklem client = nrp->nr_client; 327191783Srmacklem nrp->nr_client = NULL; 328191783Srmacklem mtx_unlock(&nrp->nr_mtx); 329223309Srmacklem rpc_gss_secpurge_call(client); 330191783Srmacklem CLNT_CLOSE(client); 331191783Srmacklem CLNT_RELEASE(client); 332191783Srmacklem } else { 333191783Srmacklem mtx_unlock(&nrp->nr_mtx); 334191783Srmacklem } 335191783Srmacklem} 336191783Srmacklem 337191783Srmacklemstatic AUTH * 338191783Srmacklemnfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal, 339191783Srmacklem char *srv_principal, gss_OID mech_oid, struct ucred *cred) 340191783Srmacklem{ 341191783Srmacklem rpc_gss_service_t svc; 342191783Srmacklem AUTH *auth; 343192616Srmacklem#ifdef notyet 344191783Srmacklem rpc_gss_options_req_t req_options; 345191783Srmacklem#endif 346191783Srmacklem 347191783Srmacklem switch (secflavour) { 348191783Srmacklem case RPCSEC_GSS_KRB5: 349191783Srmacklem case RPCSEC_GSS_KRB5I: 350191783Srmacklem case RPCSEC_GSS_KRB5P: 351191783Srmacklem if (!mech_oid) { 352223309Srmacklem if (!rpc_gss_mech_to_oid_call("kerberosv5", &mech_oid)) 353191783Srmacklem return (NULL); 354191783Srmacklem } 355191783Srmacklem if (secflavour == RPCSEC_GSS_KRB5) 356191783Srmacklem svc = rpc_gss_svc_none; 357191783Srmacklem else if (secflavour == RPCSEC_GSS_KRB5I) 358191783Srmacklem svc = rpc_gss_svc_integrity; 359191783Srmacklem else 360191783Srmacklem svc = rpc_gss_svc_privacy; 361192616Srmacklem#ifdef notyet 362191783Srmacklem req_options.req_flags = GSS_C_MUTUAL_FLAG; 363191783Srmacklem req_options.time_req = 0; 364191783Srmacklem req_options.my_cred = GSS_C_NO_CREDENTIAL; 365191783Srmacklem req_options.input_channel_bindings = NULL; 366191783Srmacklem req_options.enc_type = nfs_keytab_enctype; 367191783Srmacklem 368223309Srmacklem auth = rpc_gss_secfind_call(nrp->nr_client, cred, 369191783Srmacklem clnt_principal, srv_principal, mech_oid, svc, 370191783Srmacklem &req_options); 371192616Srmacklem#else 372192616Srmacklem /* 373192616Srmacklem * Until changes to the rpcsec_gss code are committed, 374192616Srmacklem * there is no support for host based initiator 375192616Srmacklem * principals. As such, that case cannot yet be handled. 376192616Srmacklem */ 377192616Srmacklem if (clnt_principal == NULL) 378223309Srmacklem auth = rpc_gss_secfind_call(nrp->nr_client, cred, 379192616Srmacklem srv_principal, mech_oid, svc); 380192616Srmacklem else 381192616Srmacklem auth = NULL; 382192616Srmacklem#endif 383192675Srmacklem if (auth != NULL) 384192675Srmacklem return (auth); 385192675Srmacklem /* fallthrough */ 386191783Srmacklem case AUTH_SYS: 387191783Srmacklem default: 388191783Srmacklem return (authunix_create(cred)); 389191783Srmacklem 390191783Srmacklem } 391191783Srmacklem} 392191783Srmacklem 393191783Srmacklem/* 394191783Srmacklem * Callback from the RPC code to generate up/down notifications. 395191783Srmacklem */ 396191783Srmacklem 397191783Srmacklemstruct nfs_feedback_arg { 398191783Srmacklem struct nfsmount *nf_mount; 399191783Srmacklem int nf_lastmsg; /* last tprintf */ 400191783Srmacklem int nf_tprintfmsg; 401191783Srmacklem struct thread *nf_td; 402191783Srmacklem}; 403191783Srmacklem 404191783Srmacklemstatic void 405191783Srmacklemnfs_feedback(int type, int proc, void *arg) 406191783Srmacklem{ 407191783Srmacklem struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg; 408191783Srmacklem struct nfsmount *nmp = nf->nf_mount; 409191783Srmacklem struct timeval now; 410191783Srmacklem 411191783Srmacklem getmicrouptime(&now); 412191783Srmacklem 413191783Srmacklem switch (type) { 414191783Srmacklem case FEEDBACK_REXMIT2: 415191783Srmacklem case FEEDBACK_RECONNECT: 416191783Srmacklem if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now.tv_sec) { 417191783Srmacklem nfs_down(nmp, nf->nf_td, 418191783Srmacklem "not responding", 0, NFSSTA_TIMEO); 419191783Srmacklem nf->nf_tprintfmsg = TRUE; 420191783Srmacklem nf->nf_lastmsg = now.tv_sec; 421191783Srmacklem } 422191783Srmacklem break; 423191783Srmacklem 424191783Srmacklem case FEEDBACK_OK: 425191783Srmacklem nfs_up(nf->nf_mount, nf->nf_td, 426191783Srmacklem "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg); 427191783Srmacklem break; 428191783Srmacklem } 429191783Srmacklem} 430191783Srmacklem 431191783Srmacklem/* 432191783Srmacklem * newnfs_request - goes something like this 433191783Srmacklem * - does the rpc by calling the krpc layer 434191783Srmacklem * - break down rpc header and return with nfs reply 435191783Srmacklem * nb: always frees up nd_mreq mbuf list 436191783Srmacklem */ 437191783Srmacklemint 438191783Srmacklemnewnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, 439191783Srmacklem struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp, 440191783Srmacklem struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers, 441191783Srmacklem u_char *retsum, int toplevel, u_int64_t *xidp) 442191783Srmacklem{ 443191783Srmacklem u_int32_t *tl; 444191783Srmacklem time_t waituntil; 445195642Srmacklem int i, j, set_uid = 0, set_sigset = 0; 446191783Srmacklem int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS; 447191783Srmacklem u_int16_t procnum; 448191783Srmacklem u_int trylater_delay = 1; 449191783Srmacklem struct nfs_feedback_arg nf; 450191783Srmacklem struct timeval timo, now; 451191783Srmacklem AUTH *auth; 452191783Srmacklem struct rpc_callextra ext; 453191783Srmacklem enum clnt_stat stat; 454191783Srmacklem struct nfsreq *rep = NULL; 455191783Srmacklem char *srv_principal = NULL; 456192675Srmacklem uid_t saved_uid = (uid_t)-1; 457195642Srmacklem sigset_t oldset; 458191783Srmacklem 459191783Srmacklem if (xidp != NULL) 460191783Srmacklem *xidp = 0; 461191783Srmacklem /* Reject requests while attempting a forced unmount. */ 462191783Srmacklem if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) { 463191783Srmacklem m_freem(nd->nd_mreq); 464191783Srmacklem return (ESTALE); 465191783Srmacklem } 466191783Srmacklem 467195642Srmacklem /* For client side interruptible mounts, mask off the signals. */ 468195642Srmacklem if (nmp != NULL && td != NULL && NFSHASINT(nmp)) { 469195642Srmacklem newnfs_set_sigmask(td, &oldset); 470195642Srmacklem set_sigset = 1; 471195642Srmacklem } 472195642Srmacklem 473191783Srmacklem /* 474192675Srmacklem * XXX if not already connected call nfs_connect now. Longer 475192675Srmacklem * term, change nfs_mount to call nfs_connect unconditionally 476192675Srmacklem * and let clnt_reconnect_create handle reconnects. 477192675Srmacklem */ 478192675Srmacklem if (nrp->nr_client == NULL) 479192675Srmacklem newnfs_connect(nmp, nrp, cred, td, 0); 480192675Srmacklem 481192675Srmacklem /* 482191783Srmacklem * For a client side mount, nmp is != NULL and clp == NULL. For 483191783Srmacklem * server calls (callbacks or upcalls), nmp == NULL. 484191783Srmacklem */ 485191783Srmacklem if (clp != NULL) { 486191783Srmacklem NFSLOCKSTATE(); 487191783Srmacklem if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) { 488191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 489191783Srmacklem if (nd->nd_procnum != NFSPROC_NULL) { 490191783Srmacklem if (clp->lc_flags & LCL_GSSINTEGRITY) 491191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 492191783Srmacklem else if (clp->lc_flags & LCL_GSSPRIVACY) 493191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 494191783Srmacklem } 495191783Srmacklem } 496191783Srmacklem NFSUNLOCKSTATE(); 497191783Srmacklem } else if (nmp != NULL && NFSHASKERB(nmp) && 498191783Srmacklem nd->nd_procnum != NFSPROC_NULL) { 499191783Srmacklem if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0) 500191783Srmacklem nd->nd_flag |= ND_USEGSSNAME; 501192675Srmacklem if ((nd->nd_flag & ND_USEGSSNAME) != 0) { 502192675Srmacklem /* 503192675Srmacklem * If there is a client side host based credential, 504192675Srmacklem * use that, otherwise use the system uid, if set. 505192675Srmacklem */ 506192675Srmacklem if (nmp->nm_krbnamelen > 0) { 507192675Srmacklem usegssname = 1; 508192675Srmacklem } else if (nmp->nm_uid != (uid_t)-1) { 509192675Srmacklem saved_uid = cred->cr_uid; 510192675Srmacklem cred->cr_uid = nmp->nm_uid; 511192675Srmacklem set_uid = 1; 512192675Srmacklem } 513192675Srmacklem } else if (nmp->nm_krbnamelen == 0 && 514192675Srmacklem nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) { 515192675Srmacklem /* 516192675Srmacklem * If there is no host based principal name and 517192675Srmacklem * the system uid is set and this is root, use the 518192675Srmacklem * system uid, since root won't have user 519192675Srmacklem * credentials in a credentials cache file. 520192675Srmacklem */ 521192675Srmacklem saved_uid = cred->cr_uid; 522192675Srmacklem cred->cr_uid = nmp->nm_uid; 523192675Srmacklem set_uid = 1; 524192675Srmacklem } 525191783Srmacklem if (NFSHASINTEGRITY(nmp)) 526191783Srmacklem secflavour = RPCSEC_GSS_KRB5I; 527191783Srmacklem else if (NFSHASPRIVACY(nmp)) 528191783Srmacklem secflavour = RPCSEC_GSS_KRB5P; 529191783Srmacklem else 530191783Srmacklem secflavour = RPCSEC_GSS_KRB5; 531191783Srmacklem srv_principal = NFSMNT_SRVKRBNAME(nmp); 532223436Srmacklem } else if (nmp != NULL && !NFSHASKERB(nmp) && 533223436Srmacklem nd->nd_procnum != NFSPROC_NULL && 534223436Srmacklem (nd->nd_flag & ND_USEGSSNAME) != 0) { 535223436Srmacklem /* 536223436Srmacklem * Use the uid that did the mount when the RPC is doing 537223436Srmacklem * NFSv4 system operations, as indicated by the 538223436Srmacklem * ND_USEGSSNAME flag, for the AUTH_SYS case. 539223436Srmacklem */ 540223436Srmacklem saved_uid = cred->cr_uid; 541223436Srmacklem if (nmp->nm_uid != (uid_t)-1) 542223436Srmacklem cred->cr_uid = nmp->nm_uid; 543223436Srmacklem else 544223436Srmacklem cred->cr_uid = 0; 545223436Srmacklem set_uid = 1; 546191783Srmacklem } 547191783Srmacklem 548191783Srmacklem if (nmp != NULL) { 549191783Srmacklem bzero(&nf, sizeof(struct nfs_feedback_arg)); 550191783Srmacklem nf.nf_mount = nmp; 551191783Srmacklem nf.nf_td = td; 552191783Srmacklem getmicrouptime(&now); 553191783Srmacklem nf.nf_lastmsg = now.tv_sec - 554191783Srmacklem ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay)); 555191783Srmacklem } 556191783Srmacklem 557192181Srmacklem if (nd->nd_procnum == NFSPROC_NULL) 558192181Srmacklem auth = authnone_create(); 559192181Srmacklem else if (usegssname) 560191783Srmacklem auth = nfs_getauth(nrp, secflavour, nmp->nm_krbname, 561191783Srmacklem srv_principal, NULL, cred); 562191783Srmacklem else 563191783Srmacklem auth = nfs_getauth(nrp, secflavour, NULL, 564191783Srmacklem srv_principal, NULL, cred); 565192675Srmacklem if (set_uid) 566192675Srmacklem cred->cr_uid = saved_uid; 567191783Srmacklem if (auth == NULL) { 568191783Srmacklem m_freem(nd->nd_mreq); 569195642Srmacklem if (set_sigset) 570195642Srmacklem newnfs_restore_sigmask(td, &oldset); 571191783Srmacklem return (EACCES); 572191783Srmacklem } 573191783Srmacklem bzero(&ext, sizeof(ext)); 574191783Srmacklem ext.rc_auth = auth; 575191783Srmacklem if (nmp != NULL) { 576191783Srmacklem ext.rc_feedback = nfs_feedback; 577191783Srmacklem ext.rc_feedback_arg = &nf; 578191783Srmacklem } 579191783Srmacklem 580191783Srmacklem procnum = nd->nd_procnum; 581191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && 582192181Srmacklem nd->nd_procnum != NFSPROC_NULL && 583191783Srmacklem nd->nd_procnum != NFSV4PROC_CBCOMPOUND) 584191783Srmacklem procnum = NFSV4PROC_COMPOUND; 585191783Srmacklem 586191783Srmacklem if (nmp != NULL) { 587191783Srmacklem NFSINCRGLOBAL(newnfsstats.rpcrequests); 588207764Srmacklem 589207764Srmacklem /* Map the procnum to the old NFSv2 one, as required. */ 590207764Srmacklem if ((nd->nd_flag & ND_NFSV2) != 0) { 591207764Srmacklem if (nd->nd_procnum < NFS_V3NPROCS) 592207764Srmacklem procnum = nfsv2_procid[nd->nd_procnum]; 593207764Srmacklem else 594207764Srmacklem procnum = NFSV2PROC_NOOP; 595207764Srmacklem } 596207764Srmacklem 597191783Srmacklem /* 598191783Srmacklem * Now only used for the R_DONTRECOVER case, but until that is 599191783Srmacklem * supported within the krpc code, I need to keep a queue of 600191783Srmacklem * outstanding RPCs for nfsv4 client requests. 601191783Srmacklem */ 602191783Srmacklem if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND) 603191783Srmacklem MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq), 604191783Srmacklem M_NFSDREQ, M_WAITOK); 605223280Srmacklem#ifdef KDTRACE_HOOKS 606223280Srmacklem if (dtrace_nfscl_nfs234_start_probe != NULL) { 607223280Srmacklem uint32_t probe_id; 608223280Srmacklem int probe_procnum; 609223280Srmacklem 610223280Srmacklem if (nd->nd_flag & ND_NFSV4) { 611223280Srmacklem probe_id = 612223280Srmacklem nfscl_nfs4_start_probes[nd->nd_procnum]; 613223280Srmacklem probe_procnum = nd->nd_procnum; 614223280Srmacklem } else if (nd->nd_flag & ND_NFSV3) { 615223280Srmacklem probe_id = nfscl_nfs3_start_probes[procnum]; 616223280Srmacklem probe_procnum = procnum; 617223280Srmacklem } else { 618223280Srmacklem probe_id = 619223280Srmacklem nfscl_nfs2_start_probes[nd->nd_procnum]; 620223280Srmacklem probe_procnum = procnum; 621223280Srmacklem } 622223280Srmacklem if (probe_id != 0) 623223280Srmacklem (dtrace_nfscl_nfs234_start_probe) 624223280Srmacklem (probe_id, vp, nd->nd_mreq, cred, 625223280Srmacklem probe_procnum); 626223280Srmacklem } 627223280Srmacklem#endif 628191783Srmacklem } 629191783Srmacklem trycnt = 0; 630191783Srmacklemtryagain: 631191783Srmacklem if (nmp == NULL) { 632191783Srmacklem timo.tv_usec = 0; 633191783Srmacklem if (clp == NULL) 634191783Srmacklem timo.tv_sec = NFSV4_UPCALLTIMEO; 635191783Srmacklem else 636191783Srmacklem timo.tv_sec = NFSV4_CALLBACKTIMEO; 637191783Srmacklem } else { 638191783Srmacklem if (nrp->nr_sotype != SOCK_DGRAM) { 639191783Srmacklem timo.tv_usec = 0; 640191783Srmacklem if ((nmp->nm_flag & NFSMNT_NFSV4)) 641191783Srmacklem timo.tv_sec = INT_MAX; 642191783Srmacklem else 643191783Srmacklem timo.tv_sec = NFS_TCPTIMEO; 644191783Srmacklem } else { 645191783Srmacklem timo.tv_sec = nmp->nm_timeo / NFS_HZ; 646191783Srmacklem timo.tv_usec = (nmp->nm_timeo * 1000000) / NFS_HZ; 647191783Srmacklem } 648191783Srmacklem 649191783Srmacklem if (rep != NULL) { 650191783Srmacklem rep->r_flags = 0; 651191783Srmacklem rep->r_nmp = nmp; 652191783Srmacklem /* 653191783Srmacklem * Chain request into list of outstanding requests. 654191783Srmacklem */ 655191783Srmacklem NFSLOCKREQ(); 656191783Srmacklem TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain); 657191783Srmacklem NFSUNLOCKREQ(); 658191783Srmacklem } 659191783Srmacklem } 660191783Srmacklem 661191783Srmacklem nd->nd_mrep = NULL; 662191783Srmacklem stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, nd->nd_mreq, 663191783Srmacklem &nd->nd_mrep, timo); 664191783Srmacklem 665191783Srmacklem if (rep != NULL) { 666191783Srmacklem /* 667191783Srmacklem * RPC done, unlink the request. 668191783Srmacklem */ 669191783Srmacklem NFSLOCKREQ(); 670191783Srmacklem TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 671191783Srmacklem NFSUNLOCKREQ(); 672191783Srmacklem } 673191783Srmacklem 674191783Srmacklem /* 675191783Srmacklem * If there was a successful reply and a tprintf msg. 676191783Srmacklem * tprintf a response. 677191783Srmacklem */ 678191783Srmacklem if (stat == RPC_SUCCESS) { 679191783Srmacklem error = 0; 680191783Srmacklem } else if (stat == RPC_TIMEDOUT) { 681191783Srmacklem error = ETIMEDOUT; 682191783Srmacklem } else if (stat == RPC_VERSMISMATCH) { 683191783Srmacklem error = EOPNOTSUPP; 684191783Srmacklem } else if (stat == RPC_PROGVERSMISMATCH) { 685191783Srmacklem error = EPROTONOSUPPORT; 686191783Srmacklem } else { 687191783Srmacklem error = EACCES; 688191783Srmacklem } 689191783Srmacklem if (error) { 690191783Srmacklem m_freem(nd->nd_mreq); 691191783Srmacklem AUTH_DESTROY(auth); 692191783Srmacklem if (rep != NULL) 693191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 694195642Srmacklem if (set_sigset) 695195642Srmacklem newnfs_restore_sigmask(td, &oldset); 696191783Srmacklem return (error); 697191783Srmacklem } 698191783Srmacklem 699191783Srmacklem KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 700191783Srmacklem 701192695Srmacklem /* 702192695Srmacklem * Search for any mbufs that are not a multiple of 4 bytes long 703192695Srmacklem * or with m_data not longword aligned. 704192695Srmacklem * These could cause pointer alignment problems, so copy them to 705192695Srmacklem * well aligned mbufs. 706192695Srmacklem */ 707192695Srmacklem newnfs_realign(&nd->nd_mrep); 708191783Srmacklem nd->nd_md = nd->nd_mrep; 709191783Srmacklem nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 710191783Srmacklem nd->nd_repstat = 0; 711191783Srmacklem if (nd->nd_procnum != NFSPROC_NULL) { 712191783Srmacklem /* 713191783Srmacklem * and now the actual NFS xdr. 714191783Srmacklem */ 715191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 716191783Srmacklem nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl); 717191783Srmacklem if (nd->nd_repstat != 0) { 718224117Srmacklem if (((nd->nd_repstat == NFSERR_DELAY || 719224117Srmacklem nd->nd_repstat == NFSERR_GRACE) && 720191783Srmacklem (nd->nd_flag & ND_NFSV4) && 721224117Srmacklem nd->nd_procnum != NFSPROC_DELEGRETURN && 722191783Srmacklem nd->nd_procnum != NFSPROC_SETATTR && 723191783Srmacklem nd->nd_procnum != NFSPROC_READ && 724191783Srmacklem nd->nd_procnum != NFSPROC_WRITE && 725191783Srmacklem nd->nd_procnum != NFSPROC_OPEN && 726191783Srmacklem nd->nd_procnum != NFSPROC_CREATE && 727191783Srmacklem nd->nd_procnum != NFSPROC_OPENCONFIRM && 728191783Srmacklem nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 729191783Srmacklem nd->nd_procnum != NFSPROC_CLOSE && 730191783Srmacklem nd->nd_procnum != NFSPROC_LOCK && 731191783Srmacklem nd->nd_procnum != NFSPROC_LOCKU) || 732191783Srmacklem (nd->nd_repstat == NFSERR_DELAY && 733191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) || 734191783Srmacklem nd->nd_repstat == NFSERR_RESOURCE) { 735191783Srmacklem if (trylater_delay > NFS_TRYLATERDEL) 736191783Srmacklem trylater_delay = NFS_TRYLATERDEL; 737191783Srmacklem waituntil = NFSD_MONOSEC + trylater_delay; 738191783Srmacklem while (NFSD_MONOSEC < waituntil) 739207170Srmacklem (void) nfs_catnap(PZERO, 0, "nfstry"); 740191783Srmacklem trylater_delay *= 2; 741223441Srmacklem m_freem(nd->nd_mrep); 742223441Srmacklem nd->nd_mrep = NULL; 743191783Srmacklem goto tryagain; 744191783Srmacklem } 745191783Srmacklem 746191783Srmacklem /* 747191783Srmacklem * If the File Handle was stale, invalidate the 748191783Srmacklem * lookup cache, just in case. 749191783Srmacklem * (vp != NULL implies a client side call) 750191783Srmacklem */ 751191783Srmacklem if (nd->nd_repstat == ESTALE && vp != NULL) { 752191783Srmacklem cache_purge(vp); 753191783Srmacklem if (ncl_call_invalcaches != NULL) 754191783Srmacklem (*ncl_call_invalcaches)(vp); 755191783Srmacklem } 756191783Srmacklem } 757191783Srmacklem 758191783Srmacklem /* 759191783Srmacklem * Get rid of the tag, return count, and PUTFH result for V4. 760191783Srmacklem */ 761191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 762191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 763191783Srmacklem i = fxdr_unsigned(int, *tl); 764191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 765191783Srmacklem if (error) 766191783Srmacklem goto nfsmout; 767191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 768191783Srmacklem i = fxdr_unsigned(int, *++tl); 769191783Srmacklem 770191783Srmacklem /* 771191783Srmacklem * If the first op's status is non-zero, mark that 772191783Srmacklem * there is no more data to process. 773191783Srmacklem */ 774191783Srmacklem if (*++tl) 775191783Srmacklem nd->nd_flag |= ND_NOMOREDATA; 776191783Srmacklem 777191783Srmacklem /* 778191783Srmacklem * If the first op is Putfh, throw its results away 779191783Srmacklem * and toss the op# and status for the first op. 780191783Srmacklem */ 781191783Srmacklem if (nmp != NULL && i == NFSV4OP_PUTFH && *tl == 0) { 782191783Srmacklem NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 783191783Srmacklem i = fxdr_unsigned(int, *tl++); 784191783Srmacklem j = fxdr_unsigned(int, *tl); 785191783Srmacklem /* 786191783Srmacklem * All Compounds that do an Op that must 787191783Srmacklem * be in sequence consist of NFSV4OP_PUTFH 788191783Srmacklem * followed by one of these. As such, we 789191783Srmacklem * can determine if the seqid# should be 790191783Srmacklem * incremented, here. 791191783Srmacklem */ 792191783Srmacklem if ((i == NFSV4OP_OPEN || 793191783Srmacklem i == NFSV4OP_OPENCONFIRM || 794191783Srmacklem i == NFSV4OP_OPENDOWNGRADE || 795191783Srmacklem i == NFSV4OP_CLOSE || 796191783Srmacklem i == NFSV4OP_LOCK || 797191783Srmacklem i == NFSV4OP_LOCKU) && 798191783Srmacklem (j == 0 || 799191783Srmacklem (j != NFSERR_STALECLIENTID && 800191783Srmacklem j != NFSERR_STALESTATEID && 801191783Srmacklem j != NFSERR_BADSTATEID && 802191783Srmacklem j != NFSERR_BADSEQID && 803191783Srmacklem j != NFSERR_BADXDR && 804191783Srmacklem j != NFSERR_RESOURCE && 805191783Srmacklem j != NFSERR_NOFILEHANDLE))) 806191783Srmacklem nd->nd_flag |= ND_INCRSEQID; 807191783Srmacklem /* 808191783Srmacklem * If the first op's status is non-zero, mark 809191783Srmacklem * that there is no more data to process. 810191783Srmacklem */ 811191783Srmacklem if (j) 812191783Srmacklem nd->nd_flag |= ND_NOMOREDATA; 813191783Srmacklem } 814191783Srmacklem 815191783Srmacklem /* 816191783Srmacklem * If R_DONTRECOVER is set, replace the stale error 817191783Srmacklem * reply, so that recovery isn't initiated. 818191783Srmacklem */ 819191783Srmacklem if ((nd->nd_repstat == NFSERR_STALECLIENTID || 820191783Srmacklem nd->nd_repstat == NFSERR_STALESTATEID) && 821191783Srmacklem rep != NULL && (rep->r_flags & R_DONTRECOVER)) 822191783Srmacklem nd->nd_repstat = NFSERR_STALEDONTRECOVER; 823191783Srmacklem } 824192181Srmacklem } 825191783Srmacklem 826223280Srmacklem#ifdef KDTRACE_HOOKS 827223280Srmacklem if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) { 828223280Srmacklem uint32_t probe_id; 829223280Srmacklem int probe_procnum; 830223280Srmacklem 831223280Srmacklem if (nd->nd_flag & ND_NFSV4) { 832223280Srmacklem probe_id = nfscl_nfs4_done_probes[nd->nd_procnum]; 833223280Srmacklem probe_procnum = nd->nd_procnum; 834223280Srmacklem } else if (nd->nd_flag & ND_NFSV3) { 835223280Srmacklem probe_id = nfscl_nfs3_done_probes[procnum]; 836223280Srmacklem probe_procnum = procnum; 837223280Srmacklem } else { 838223280Srmacklem probe_id = nfscl_nfs2_done_probes[nd->nd_procnum]; 839223280Srmacklem probe_procnum = procnum; 840223280Srmacklem } 841223280Srmacklem if (probe_id != 0) 842223280Srmacklem (dtrace_nfscl_nfs234_done_probe)(probe_id, vp, 843223280Srmacklem nd->nd_mreq, cred, probe_procnum, 0); 844223280Srmacklem } 845223280Srmacklem#endif 846223280Srmacklem 847192181Srmacklem m_freem(nd->nd_mreq); 848192181Srmacklem AUTH_DESTROY(auth); 849192181Srmacklem if (rep != NULL) 850192181Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 851195642Srmacklem if (set_sigset) 852195642Srmacklem newnfs_restore_sigmask(td, &oldset); 853192181Srmacklem return (0); 854191783Srmacklemnfsmout: 855191783Srmacklem mbuf_freem(nd->nd_mrep); 856191783Srmacklem mbuf_freem(nd->nd_mreq); 857191783Srmacklem AUTH_DESTROY(auth); 858191783Srmacklem if (rep != NULL) 859191783Srmacklem FREE((caddr_t)rep, M_NFSDREQ); 860195642Srmacklem if (set_sigset) 861195642Srmacklem newnfs_restore_sigmask(td, &oldset); 862191783Srmacklem return (error); 863191783Srmacklem} 864191783Srmacklem 865191783Srmacklem/* 866191783Srmacklem * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 867191783Srmacklem * wait for all requests to complete. This is used by forced unmounts 868191783Srmacklem * to terminate any outstanding RPCs. 869191783Srmacklem */ 870191783Srmacklemint 871191783Srmacklemnewnfs_nmcancelreqs(struct nfsmount *nmp) 872191783Srmacklem{ 873191783Srmacklem 874191783Srmacklem if (nmp->nm_sockreq.nr_client != NULL) 875191783Srmacklem CLNT_CLOSE(nmp->nm_sockreq.nr_client); 876191783Srmacklem return (0); 877191783Srmacklem} 878191783Srmacklem 879191783Srmacklem/* 880191783Srmacklem * Any signal that can interrupt an NFS operation in an intr mount 881191783Srmacklem * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 882191783Srmacklem */ 883191783Srmacklemint newnfs_sig_set[] = { 884191783Srmacklem SIGINT, 885191783Srmacklem SIGTERM, 886191783Srmacklem SIGHUP, 887191783Srmacklem SIGKILL, 888191783Srmacklem SIGSTOP, 889191783Srmacklem SIGQUIT 890191783Srmacklem}; 891191783Srmacklem 892191783Srmacklem/* 893191783Srmacklem * Check to see if one of the signals in our subset is pending on 894191783Srmacklem * the process (in an intr mount). 895191783Srmacklem */ 896191783Srmacklemstatic int 897191783Srmacklemnfs_sig_pending(sigset_t set) 898191783Srmacklem{ 899191783Srmacklem int i; 900191783Srmacklem 901191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) 902191783Srmacklem if (SIGISMEMBER(set, newnfs_sig_set[i])) 903191783Srmacklem return (1); 904191783Srmacklem return (0); 905191783Srmacklem} 906191783Srmacklem 907191783Srmacklem/* 908191783Srmacklem * The set/restore sigmask functions are used to (temporarily) overwrite 909191783Srmacklem * the process p_sigmask during an RPC call (for example). These are also 910191783Srmacklem * used in other places in the NFS client that might tsleep(). 911191783Srmacklem */ 912191783Srmacklemvoid 913191783Srmacklemnewnfs_set_sigmask(struct thread *td, sigset_t *oldset) 914191783Srmacklem{ 915191783Srmacklem sigset_t newset; 916191783Srmacklem int i; 917191783Srmacklem struct proc *p; 918191783Srmacklem 919191783Srmacklem SIGFILLSET(newset); 920191783Srmacklem if (td == NULL) 921191783Srmacklem td = curthread; /* XXX */ 922191783Srmacklem p = td->td_proc; 923191783Srmacklem /* Remove the NFS set of signals from newset */ 924191783Srmacklem PROC_LOCK(p); 925191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 926191783Srmacklem for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) { 927191783Srmacklem /* 928191783Srmacklem * But make sure we leave the ones already masked 929191783Srmacklem * by the process, ie. remove the signal from the 930191783Srmacklem * temporary signalmask only if it wasn't already 931191783Srmacklem * in p_sigmask. 932191783Srmacklem */ 933191783Srmacklem if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 934191783Srmacklem !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 935191783Srmacklem SIGDELSET(newset, newnfs_sig_set[i]); 936191783Srmacklem } 937191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 938191783Srmacklem PROC_UNLOCK(p); 939191783Srmacklem kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 0); 940191783Srmacklem} 941191783Srmacklem 942191783Srmacklemvoid 943191783Srmacklemnewnfs_restore_sigmask(struct thread *td, sigset_t *set) 944191783Srmacklem{ 945191783Srmacklem if (td == NULL) 946191783Srmacklem td = curthread; /* XXX */ 947191783Srmacklem kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 948191783Srmacklem} 949191783Srmacklem 950191783Srmacklem/* 951191783Srmacklem * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 952191783Srmacklem * old one after msleep() returns. 953191783Srmacklem */ 954191783Srmacklemint 955191783Srmacklemnewnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 956191783Srmacklem{ 957191783Srmacklem sigset_t oldset; 958191783Srmacklem int error; 959191783Srmacklem struct proc *p; 960191783Srmacklem 961191783Srmacklem if ((priority & PCATCH) == 0) 962191783Srmacklem return msleep(ident, mtx, priority, wmesg, timo); 963191783Srmacklem if (td == NULL) 964191783Srmacklem td = curthread; /* XXX */ 965191783Srmacklem newnfs_set_sigmask(td, &oldset); 966191783Srmacklem error = msleep(ident, mtx, priority, wmesg, timo); 967191783Srmacklem newnfs_restore_sigmask(td, &oldset); 968191783Srmacklem p = td->td_proc; 969191783Srmacklem return (error); 970191783Srmacklem} 971191783Srmacklem 972191783Srmacklem/* 973191783Srmacklem * Test for a termination condition pending on the process. 974191783Srmacklem * This is used for NFSMNT_INT mounts. 975191783Srmacklem */ 976191783Srmacklemint 977191783Srmacklemnewnfs_sigintr(struct nfsmount *nmp, struct thread *td) 978191783Srmacklem{ 979191783Srmacklem struct proc *p; 980191783Srmacklem sigset_t tmpset; 981191783Srmacklem 982191783Srmacklem /* Terminate all requests while attempting a forced unmount. */ 983191783Srmacklem if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 984191783Srmacklem return (EIO); 985191783Srmacklem if (!(nmp->nm_flag & NFSMNT_INT)) 986191783Srmacklem return (0); 987191783Srmacklem if (td == NULL) 988191783Srmacklem return (0); 989191783Srmacklem p = td->td_proc; 990191783Srmacklem PROC_LOCK(p); 991191783Srmacklem tmpset = p->p_siglist; 992191783Srmacklem SIGSETOR(tmpset, td->td_siglist); 993191783Srmacklem SIGSETNAND(tmpset, td->td_sigmask); 994191783Srmacklem mtx_lock(&p->p_sigacts->ps_mtx); 995191783Srmacklem SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 996191783Srmacklem mtx_unlock(&p->p_sigacts->ps_mtx); 997191783Srmacklem if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 998191783Srmacklem && nfs_sig_pending(tmpset)) { 999191783Srmacklem PROC_UNLOCK(p); 1000191783Srmacklem return (EINTR); 1001191783Srmacklem } 1002191783Srmacklem PROC_UNLOCK(p); 1003191783Srmacklem return (0); 1004191783Srmacklem} 1005191783Srmacklem 1006191783Srmacklemstatic int 1007191783Srmacklemnfs_msg(struct thread *td, const char *server, const char *msg, int error) 1008191783Srmacklem{ 1009191783Srmacklem struct proc *p; 1010191783Srmacklem 1011191783Srmacklem p = td ? td->td_proc : NULL; 1012191783Srmacklem if (error) { 1013191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n", 1014191783Srmacklem server, msg, error); 1015191783Srmacklem } else { 1016191783Srmacklem tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg); 1017191783Srmacklem } 1018191783Srmacklem return (0); 1019191783Srmacklem} 1020191783Srmacklem 1021191783Srmacklemstatic void 1022191783Srmacklemnfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 1023191783Srmacklem int error, int flags) 1024191783Srmacklem{ 1025191783Srmacklem if (nmp == NULL) 1026191783Srmacklem return; 1027191783Srmacklem mtx_lock(&nmp->nm_mtx); 1028191783Srmacklem if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 1029191783Srmacklem nmp->nm_state |= NFSSTA_TIMEO; 1030191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1031191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1032191783Srmacklem VQ_NOTRESP, 0); 1033191783Srmacklem } else 1034191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1035191783Srmacklem mtx_lock(&nmp->nm_mtx); 1036191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1037191783Srmacklem nmp->nm_state |= NFSSTA_LOCKTIMEO; 1038191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1039191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1040191783Srmacklem VQ_NOTRESPLOCK, 0); 1041191783Srmacklem } else 1042191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1043191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 1044191783Srmacklem} 1045191783Srmacklem 1046191783Srmacklemstatic void 1047191783Srmacklemnfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 1048191783Srmacklem int flags, int tprintfmsg) 1049191783Srmacklem{ 1050191783Srmacklem if (nmp == NULL) 1051191783Srmacklem return; 1052191783Srmacklem if (tprintfmsg) { 1053191783Srmacklem nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 1054191783Srmacklem } 1055191783Srmacklem 1056191783Srmacklem mtx_lock(&nmp->nm_mtx); 1057191783Srmacklem if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 1058191783Srmacklem nmp->nm_state &= ~NFSSTA_TIMEO; 1059191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1060191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1061191783Srmacklem VQ_NOTRESP, 1); 1062191783Srmacklem } else 1063191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1064191783Srmacklem 1065191783Srmacklem mtx_lock(&nmp->nm_mtx); 1066191783Srmacklem if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1067191783Srmacklem nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 1068191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1069191783Srmacklem vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1070191783Srmacklem VQ_NOTRESPLOCK, 1); 1071191783Srmacklem } else 1072191783Srmacklem mtx_unlock(&nmp->nm_mtx); 1073191783Srmacklem} 1074191783Srmacklem 1075