1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/cred.h> 35 #include <sys/buf.h> 36 #include <sys/vfs.h> 37 #include <sys/vfs_opreg.h> 38 #include <sys/vnode.h> 39 #include <sys/uio.h> 40 #include <sys/errno.h> 41 #include <sys/sysmacros.h> 42 #include <sys/statvfs.h> 43 #include <sys/kmem.h> 44 #include <sys/dirent.h> 45 #include <sys/cmn_err.h> 46 #include <sys/debug.h> 47 #include <sys/systeminfo.h> 48 #include <sys/flock.h> 49 #include <sys/pathname.h> 50 #include <sys/nbmlock.h> 51 #include <sys/share.h> 52 #include <sys/atomic.h> 53 #include <sys/policy.h> 54 #include <sys/fem.h> 55 #include <sys/sdt.h> 56 #include <sys/ddi.h> 57 #include <sys/zone.h> 58 59 #include <fs/fs_reparse.h> 60 61 #include <rpc/types.h> 62 #include <rpc/auth.h> 63 #include <rpc/rpcsec_gss.h> 64 #include <rpc/svc.h> 65 66 #include <nfs/nfs.h> 67 #include <nfs/export.h> 68 #include <nfs/nfs_cmd.h> 69 #include <nfs/lm.h> 70 #include <nfs/nfs4.h> 71 72 #include <sys/strsubr.h> 73 #include <sys/strsun.h> 74 75 #include <inet/common.h> 76 #include <inet/ip.h> 77 #include <inet/ip6.h> 78 79 #include <sys/tsol/label.h> 80 #include <sys/tsol/tndb.h> 81 82 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 83 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 84 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 85 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 86 extern struct svc_ops rdma_svc_ops; 87 88 static int rdma_setup_read_data4(READ4args *, READ4res *); 89 90 /* 91 * Used to bump the stateid4.seqid value and show changes in the stateid 92 */ 93 #define next_stateid(sp) (++(sp)->bits.chgseq) 94 95 /* 96 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 97 * This is used to return NFS4ERR_TOOSMALL when clients specify 98 * maxcount that isn't large enough to hold the smallest possible 99 * XDR encoded dirent. 100 * 101 * sizeof cookie (8 bytes) + 102 * sizeof name_len (4 bytes) + 103 * sizeof smallest (padded) name (4 bytes) + 104 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 105 * sizeof attrlist4_len (4 bytes) + 106 * sizeof next boolean (4 bytes) 107 * 108 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 109 * the smallest possible entry4 (assumes no attrs requested). 110 * sizeof nfsstat4 (4 bytes) + 111 * sizeof verifier4 (8 bytes) + 112 * sizeof entry4list bool (4 bytes) + 113 * sizeof entry4 (36 bytes) + 114 * sizeof eof bool (4 bytes) 115 * 116 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 117 * VOP_READDIR. Its value is the size of the maximum possible dirent 118 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 119 * required for a given name length. MAXNAMELEN is the maximum 120 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 121 * macros are to allow for . and .. entries -- just a minor tweak to try 122 * and guarantee that buffer we give to VOP_READDIR will be large enough 123 * to hold ., .., and the largest possible solaris dirent64. 124 */ 125 #define RFS4_MINLEN_ENTRY4 36 126 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 127 #define RFS4_MINLEN_RDDIR_BUF \ 128 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 129 130 /* 131 * It would be better to pad to 4 bytes since that's what XDR would do, 132 * but the dirents UFS gives us are already padded to 8, so just take 133 * what we're given. Dircount is only a hint anyway. Currently the 134 * solaris kernel is ASCII only, so there's no point in calling the 135 * UTF8 functions. 136 * 137 * dirent64: named padded to provide 8 byte struct alignment 138 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 139 * 140 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 141 * 142 */ 143 #define DIRENT64_TO_DIRCOUNT(dp) \ 144 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 145 146 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 147 148 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 149 150 u_longlong_t nfs4_srv_caller_id; 151 uint_t nfs4_srv_vkey = 0; 152 153 verifier4 Write4verf; 154 verifier4 Readdir4verf; 155 156 void rfs4_init_compound_state(struct compound_state *); 157 158 static void nullfree(caddr_t); 159 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 160 struct compound_state *); 161 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 162 struct compound_state *); 163 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_create_free(nfs_resop4 *resop); 170 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 171 struct svc_req *, struct compound_state *); 172 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 173 struct svc_req *, struct compound_state *); 174 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 175 struct compound_state *); 176 static void rfs4_op_getattr_free(nfs_resop4 *); 177 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 178 struct compound_state *); 179 static void rfs4_op_getfh_free(nfs_resop4 *); 180 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 181 struct compound_state *); 182 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void lock_denied_free(nfs_resop4 *); 187 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 196 struct svc_req *req, struct compound_state *cs); 197 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 200 struct compound_state *); 201 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 202 struct svc_req *, struct compound_state *); 203 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 204 struct svc_req *, struct compound_state *); 205 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 206 struct compound_state *); 207 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 208 struct compound_state *); 209 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_read_free(nfs_resop4 *); 214 static void rfs4_op_readdir_free(nfs_resop4 *resop); 215 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_readlink_free(nfs_resop4 *); 218 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 219 struct svc_req *, struct compound_state *); 220 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 223 struct compound_state *); 224 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 237 struct svc_req *, struct compound_state *); 238 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 239 struct svc_req *req, struct compound_state *); 240 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 241 struct compound_state *); 242 static void rfs4_op_secinfo_free(nfs_resop4 *); 243 244 static nfsstat4 check_open_access(uint32_t, 245 struct compound_state *, struct svc_req *); 246 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 247 void rfs4_ss_clid(rfs4_client_t *); 248 249 /* 250 * translation table for attrs 251 */ 252 struct nfs4_ntov_table { 253 union nfs4_attr_u *na; 254 uint8_t amap[NFS4_MAXNUM_ATTRS]; 255 int attrcnt; 256 bool_t vfsstat; 257 }; 258 259 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 260 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 261 struct nfs4_svgetit_arg *sargp); 262 263 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 264 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 265 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 266 267 fem_t *deleg_rdops; 268 fem_t *deleg_wrops; 269 270 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 271 kmutex_t rfs4_servinst_lock; /* protects linked list */ 272 int rfs4_seen_first_compound; /* set first time we see one */ 273 274 /* 275 * NFS4 op dispatch table 276 */ 277 278 struct rfsv4disp { 279 void (*dis_proc)(); /* proc to call */ 280 void (*dis_resfree)(); /* frees space allocated by proc */ 281 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 282 }; 283 284 static struct rfsv4disp rfsv4disptab[] = { 285 /* 286 * NFS VERSION 4 287 */ 288 289 /* RFS_NULL = 0 */ 290 {rfs4_op_illegal, nullfree, 0}, 291 292 /* UNUSED = 1 */ 293 {rfs4_op_illegal, nullfree, 0}, 294 295 /* UNUSED = 2 */ 296 {rfs4_op_illegal, nullfree, 0}, 297 298 /* OP_ACCESS = 3 */ 299 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 300 301 /* OP_CLOSE = 4 */ 302 {rfs4_op_close, nullfree, 0}, 303 304 /* OP_COMMIT = 5 */ 305 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 306 307 /* OP_CREATE = 6 */ 308 {rfs4_op_create, nullfree, 0}, 309 310 /* OP_DELEGPURGE = 7 */ 311 {rfs4_op_delegpurge, nullfree, 0}, 312 313 /* OP_DELEGRETURN = 8 */ 314 {rfs4_op_delegreturn, nullfree, 0}, 315 316 /* OP_GETATTR = 9 */ 317 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 318 319 /* OP_GETFH = 10 */ 320 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 321 322 /* OP_LINK = 11 */ 323 {rfs4_op_link, nullfree, 0}, 324 325 /* OP_LOCK = 12 */ 326 {rfs4_op_lock, lock_denied_free, 0}, 327 328 /* OP_LOCKT = 13 */ 329 {rfs4_op_lockt, lock_denied_free, 0}, 330 331 /* OP_LOCKU = 14 */ 332 {rfs4_op_locku, nullfree, 0}, 333 334 /* OP_LOOKUP = 15 */ 335 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 336 337 /* OP_LOOKUPP = 16 */ 338 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 339 340 /* OP_NVERIFY = 17 */ 341 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 342 343 /* OP_OPEN = 18 */ 344 {rfs4_op_open, rfs4_free_reply, 0}, 345 346 /* OP_OPENATTR = 19 */ 347 {rfs4_op_openattr, nullfree, 0}, 348 349 /* OP_OPEN_CONFIRM = 20 */ 350 {rfs4_op_open_confirm, nullfree, 0}, 351 352 /* OP_OPEN_DOWNGRADE = 21 */ 353 {rfs4_op_open_downgrade, nullfree, 0}, 354 355 /* OP_OPEN_PUTFH = 22 */ 356 {rfs4_op_putfh, nullfree, RPC_ALL}, 357 358 /* OP_PUTPUBFH = 23 */ 359 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 360 361 /* OP_PUTROOTFH = 24 */ 362 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 363 364 /* OP_READ = 25 */ 365 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 366 367 /* OP_READDIR = 26 */ 368 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 369 370 /* OP_READLINK = 27 */ 371 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 372 373 /* OP_REMOVE = 28 */ 374 {rfs4_op_remove, nullfree, 0}, 375 376 /* OP_RENAME = 29 */ 377 {rfs4_op_rename, nullfree, 0}, 378 379 /* OP_RENEW = 30 */ 380 {rfs4_op_renew, nullfree, 0}, 381 382 /* OP_RESTOREFH = 31 */ 383 {rfs4_op_restorefh, nullfree, RPC_ALL}, 384 385 /* OP_SAVEFH = 32 */ 386 {rfs4_op_savefh, nullfree, RPC_ALL}, 387 388 /* OP_SECINFO = 33 */ 389 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 390 391 /* OP_SETATTR = 34 */ 392 {rfs4_op_setattr, nullfree, 0}, 393 394 /* OP_SETCLIENTID = 35 */ 395 {rfs4_op_setclientid, nullfree, 0}, 396 397 /* OP_SETCLIENTID_CONFIRM = 36 */ 398 {rfs4_op_setclientid_confirm, nullfree, 0}, 399 400 /* OP_VERIFY = 37 */ 401 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 402 403 /* OP_WRITE = 38 */ 404 {rfs4_op_write, nullfree, 0}, 405 406 /* OP_RELEASE_LOCKOWNER = 39 */ 407 {rfs4_op_release_lockowner, nullfree, 0}, 408 }; 409 410 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 411 412 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 413 414 #ifdef DEBUG 415 416 int rfs4_fillone_debug = 0; 417 int rfs4_no_stub_access = 1; 418 int rfs4_rddir_debug = 0; 419 420 static char *rfs4_op_string[] = { 421 "rfs4_op_null", 422 "rfs4_op_1 unused", 423 "rfs4_op_2 unused", 424 "rfs4_op_access", 425 "rfs4_op_close", 426 "rfs4_op_commit", 427 "rfs4_op_create", 428 "rfs4_op_delegpurge", 429 "rfs4_op_delegreturn", 430 "rfs4_op_getattr", 431 "rfs4_op_getfh", 432 "rfs4_op_link", 433 "rfs4_op_lock", 434 "rfs4_op_lockt", 435 "rfs4_op_locku", 436 "rfs4_op_lookup", 437 "rfs4_op_lookupp", 438 "rfs4_op_nverify", 439 "rfs4_op_open", 440 "rfs4_op_openattr", 441 "rfs4_op_open_confirm", 442 "rfs4_op_open_downgrade", 443 "rfs4_op_putfh", 444 "rfs4_op_putpubfh", 445 "rfs4_op_putrootfh", 446 "rfs4_op_read", 447 "rfs4_op_readdir", 448 "rfs4_op_readlink", 449 "rfs4_op_remove", 450 "rfs4_op_rename", 451 "rfs4_op_renew", 452 "rfs4_op_restorefh", 453 "rfs4_op_savefh", 454 "rfs4_op_secinfo", 455 "rfs4_op_setattr", 456 "rfs4_op_setclientid", 457 "rfs4_op_setclient_confirm", 458 "rfs4_op_verify", 459 "rfs4_op_write", 460 "rfs4_op_release_lockowner", 461 "rfs4_op_illegal" 462 }; 463 #endif 464 465 void rfs4_ss_chkclid(rfs4_client_t *); 466 467 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 468 469 extern void rfs4_free_fs_locations4(fs_locations4 *); 470 471 #ifdef nextdp 472 #undef nextdp 473 #endif 474 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 475 476 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 477 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 478 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 479 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 480 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 481 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 482 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 483 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 484 NULL, NULL 485 }; 486 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 487 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 488 VOPNAME_READ, { .femop_read = deleg_wr_read }, 489 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 490 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 491 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 492 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 493 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 494 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 495 NULL, NULL 496 }; 497 498 int 499 rfs4_srvrinit(void) 500 { 501 timespec32_t verf; 502 int error; 503 extern void rfs4_attr_init(); 504 extern krwlock_t rfs4_deleg_policy_lock; 505 506 /* 507 * The following algorithm attempts to find a unique verifier 508 * to be used as the write verifier returned from the server 509 * to the client. It is important that this verifier change 510 * whenever the server reboots. Of secondary importance, it 511 * is important for the verifier to be unique between two 512 * different servers. 513 * 514 * Thus, an attempt is made to use the system hostid and the 515 * current time in seconds when the nfssrv kernel module is 516 * loaded. It is assumed that an NFS server will not be able 517 * to boot and then to reboot in less than a second. If the 518 * hostid has not been set, then the current high resolution 519 * time is used. This will ensure different verifiers each 520 * time the server reboots and minimize the chances that two 521 * different servers will have the same verifier. 522 * XXX - this is broken on LP64 kernels. 523 */ 524 verf.tv_sec = (time_t)zone_get_hostid(NULL); 525 if (verf.tv_sec != 0) { 526 verf.tv_nsec = gethrestime_sec(); 527 } else { 528 timespec_t tverf; 529 530 gethrestime(&tverf); 531 verf.tv_sec = (time_t)tverf.tv_sec; 532 verf.tv_nsec = tverf.tv_nsec; 533 } 534 535 Write4verf = *(uint64_t *)&verf; 536 537 rfs4_attr_init(); 538 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 539 540 /* Used to manage create/destroy of server state */ 541 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 542 543 /* Used to manage access to server instance linked list */ 544 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 545 546 /* Used to manage access to rfs4_deleg_policy */ 547 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 548 549 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 550 if (error != 0) { 551 rfs4_disable_delegation(); 552 } else { 553 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 554 &deleg_wrops); 555 if (error != 0) { 556 rfs4_disable_delegation(); 557 fem_free(deleg_rdops); 558 } 559 } 560 561 nfs4_srv_caller_id = fs_new_caller_id(); 562 563 lockt_sysid = lm_alloc_sysidt(); 564 565 vsd_create(&nfs4_srv_vkey, NULL); 566 567 return (0); 568 } 569 570 void 571 rfs4_srvrfini(void) 572 { 573 extern krwlock_t rfs4_deleg_policy_lock; 574 575 if (lockt_sysid != LM_NOSYSID) { 576 lm_free_sysidt(lockt_sysid); 577 lockt_sysid = LM_NOSYSID; 578 } 579 580 mutex_destroy(&rfs4_deleg_lock); 581 mutex_destroy(&rfs4_state_lock); 582 rw_destroy(&rfs4_deleg_policy_lock); 583 584 fem_free(deleg_rdops); 585 fem_free(deleg_wrops); 586 } 587 588 void 589 rfs4_init_compound_state(struct compound_state *cs) 590 { 591 bzero(cs, sizeof (*cs)); 592 cs->cont = TRUE; 593 cs->access = CS_ACCESS_DENIED; 594 cs->deleg = FALSE; 595 cs->mandlock = FALSE; 596 cs->fh.nfs_fh4_val = cs->fhbuf; 597 } 598 599 void 600 rfs4_grace_start(rfs4_servinst_t *sip) 601 { 602 rw_enter(&sip->rwlock, RW_WRITER); 603 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 604 sip->grace_period = rfs4_grace_period; 605 rw_exit(&sip->rwlock); 606 } 607 608 /* 609 * returns true if the instance's grace period has never been started 610 */ 611 int 612 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 613 { 614 time_t start_time; 615 616 rw_enter(&sip->rwlock, RW_READER); 617 start_time = sip->start_time; 618 rw_exit(&sip->rwlock); 619 620 return (start_time == 0); 621 } 622 623 /* 624 * Indicates if server instance is within the 625 * grace period. 626 */ 627 int 628 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 629 { 630 time_t grace_expiry; 631 632 rw_enter(&sip->rwlock, RW_READER); 633 grace_expiry = sip->start_time + sip->grace_period; 634 rw_exit(&sip->rwlock); 635 636 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 637 } 638 639 int 640 rfs4_clnt_in_grace(rfs4_client_t *cp) 641 { 642 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 643 644 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 645 } 646 647 /* 648 * reset all currently active grace periods 649 */ 650 void 651 rfs4_grace_reset_all(void) 652 { 653 rfs4_servinst_t *sip; 654 655 mutex_enter(&rfs4_servinst_lock); 656 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 657 if (rfs4_servinst_in_grace(sip)) 658 rfs4_grace_start(sip); 659 mutex_exit(&rfs4_servinst_lock); 660 } 661 662 /* 663 * start any new instances' grace periods 664 */ 665 void 666 rfs4_grace_start_new(void) 667 { 668 rfs4_servinst_t *sip; 669 670 mutex_enter(&rfs4_servinst_lock); 671 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 672 if (rfs4_servinst_grace_new(sip)) 673 rfs4_grace_start(sip); 674 mutex_exit(&rfs4_servinst_lock); 675 } 676 677 static rfs4_dss_path_t * 678 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 679 { 680 size_t len; 681 rfs4_dss_path_t *dss_path; 682 683 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 684 685 /* 686 * Take a copy of the string, since the original may be overwritten. 687 * Sadly, no strdup() in the kernel. 688 */ 689 /* allow for NUL */ 690 len = strlen(path) + 1; 691 dss_path->path = kmem_alloc(len, KM_SLEEP); 692 (void) strlcpy(dss_path->path, path, len); 693 694 /* associate with servinst */ 695 dss_path->sip = sip; 696 dss_path->index = index; 697 698 /* 699 * Add to list of served paths. 700 * No locking required, as we're only ever called at startup. 701 */ 702 if (rfs4_dss_pathlist == NULL) { 703 /* this is the first dss_path_t */ 704 705 /* needed for insque/remque */ 706 dss_path->next = dss_path->prev = dss_path; 707 708 rfs4_dss_pathlist = dss_path; 709 } else { 710 insque(dss_path, rfs4_dss_pathlist); 711 } 712 713 return (dss_path); 714 } 715 716 /* 717 * Create a new server instance, and make it the currently active instance. 718 * Note that starting the grace period too early will reduce the clients' 719 * recovery window. 720 */ 721 void 722 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 723 { 724 unsigned i; 725 rfs4_servinst_t *sip; 726 rfs4_oldstate_t *oldstate; 727 728 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 729 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 730 731 sip->start_time = (time_t)0; 732 sip->grace_period = (time_t)0; 733 sip->next = NULL; 734 sip->prev = NULL; 735 736 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 737 /* 738 * This initial dummy entry is required to setup for insque/remque. 739 * It must be skipped over whenever the list is traversed. 740 */ 741 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 742 /* insque/remque require initial list entry to be self-terminated */ 743 oldstate->next = oldstate; 744 oldstate->prev = oldstate; 745 sip->oldstate = oldstate; 746 747 748 sip->dss_npaths = dss_npaths; 749 sip->dss_paths = kmem_alloc(dss_npaths * 750 sizeof (rfs4_dss_path_t *), KM_SLEEP); 751 752 for (i = 0; i < dss_npaths; i++) { 753 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 754 } 755 756 mutex_enter(&rfs4_servinst_lock); 757 if (rfs4_cur_servinst != NULL) { 758 /* add to linked list */ 759 sip->prev = rfs4_cur_servinst; 760 rfs4_cur_servinst->next = sip; 761 } 762 if (start_grace) 763 rfs4_grace_start(sip); 764 /* make the new instance "current" */ 765 rfs4_cur_servinst = sip; 766 767 mutex_exit(&rfs4_servinst_lock); 768 } 769 770 /* 771 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 772 * all instances directly. 773 */ 774 void 775 rfs4_servinst_destroy_all(void) 776 { 777 rfs4_servinst_t *sip, *prev, *current; 778 #ifdef DEBUG 779 int n = 0; 780 #endif 781 782 mutex_enter(&rfs4_servinst_lock); 783 ASSERT(rfs4_cur_servinst != NULL); 784 current = rfs4_cur_servinst; 785 rfs4_cur_servinst = NULL; 786 for (sip = current; sip != NULL; sip = prev) { 787 prev = sip->prev; 788 rw_destroy(&sip->rwlock); 789 if (sip->oldstate) 790 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 791 if (sip->dss_paths) 792 kmem_free(sip->dss_paths, 793 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 794 kmem_free(sip, sizeof (rfs4_servinst_t)); 795 #ifdef DEBUG 796 n++; 797 #endif 798 } 799 mutex_exit(&rfs4_servinst_lock); 800 } 801 802 /* 803 * Assign the current server instance to a client_t. 804 * Should be called with cp->rc_dbe held. 805 */ 806 void 807 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 808 { 809 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 810 811 /* 812 * The lock ensures that if the current instance is in the process 813 * of changing, we will see the new one. 814 */ 815 mutex_enter(&rfs4_servinst_lock); 816 cp->rc_server_instance = sip; 817 mutex_exit(&rfs4_servinst_lock); 818 } 819 820 rfs4_servinst_t * 821 rfs4_servinst(rfs4_client_t *cp) 822 { 823 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 824 825 return (cp->rc_server_instance); 826 } 827 828 /* ARGSUSED */ 829 static void 830 nullfree(caddr_t resop) 831 { 832 } 833 834 /* 835 * This is a fall-through for invalid or not implemented (yet) ops 836 */ 837 /* ARGSUSED */ 838 static void 839 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 840 struct compound_state *cs) 841 { 842 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 843 } 844 845 /* 846 * Check if the security flavor, nfsnum, is in the flavor_list. 847 */ 848 bool_t 849 in_flavor_list(int nfsnum, int *flavor_list, int count) 850 { 851 int i; 852 853 for (i = 0; i < count; i++) { 854 if (nfsnum == flavor_list[i]) 855 return (TRUE); 856 } 857 return (FALSE); 858 } 859 860 /* 861 * Used by rfs4_op_secinfo to get the security information from the 862 * export structure associated with the component. 863 */ 864 /* ARGSUSED */ 865 static nfsstat4 866 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 867 { 868 int error, different_export = 0; 869 vnode_t *dvp, *vp, *tvp; 870 struct exportinfo *exi = NULL; 871 fid_t fid; 872 uint_t count, i; 873 secinfo4 *resok_val; 874 struct secinfo *secp; 875 seconfig_t *si; 876 bool_t did_traverse; 877 int dotdot, walk; 878 879 dvp = cs->vp; 880 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 881 882 /* 883 * If dotdotting, then need to check whether it's above the 884 * root of a filesystem, or above an export point. 885 */ 886 if (dotdot) { 887 888 /* 889 * If dotdotting at the root of a filesystem, then 890 * need to traverse back to the mounted-on filesystem 891 * and do the dotdot lookup there. 892 */ 893 if (cs->vp->v_flag & VROOT) { 894 895 /* 896 * If at the system root, then can 897 * go up no further. 898 */ 899 if (VN_CMP(dvp, rootdir)) 900 return (puterrno4(ENOENT)); 901 902 /* 903 * Traverse back to the mounted-on filesystem 904 */ 905 dvp = untraverse(cs->vp); 906 907 /* 908 * Set the different_export flag so we remember 909 * to pick up a new exportinfo entry for 910 * this new filesystem. 911 */ 912 different_export = 1; 913 } else { 914 915 /* 916 * If dotdotting above an export point then set 917 * the different_export to get new export info. 918 */ 919 different_export = nfs_exported(cs->exi, cs->vp); 920 } 921 } 922 923 /* 924 * Get the vnode for the component "nm". 925 */ 926 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 927 NULL, NULL, NULL); 928 if (error) 929 return (puterrno4(error)); 930 931 /* 932 * If the vnode is in a pseudo filesystem, or if the security flavor 933 * used in the request is valid but not an explicitly shared flavor, 934 * or the access bit indicates that this is a limited access, 935 * check whether this vnode is visible. 936 */ 937 if (!different_export && 938 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 939 cs->access & CS_ACCESS_LIMITED)) { 940 if (! nfs_visible(cs->exi, vp, &different_export)) { 941 VN_RELE(vp); 942 return (puterrno4(ENOENT)); 943 } 944 } 945 946 /* 947 * If it's a mountpoint, then traverse it. 948 */ 949 if (vn_ismntpt(vp)) { 950 tvp = vp; 951 if ((error = traverse(&tvp)) != 0) { 952 VN_RELE(vp); 953 return (puterrno4(error)); 954 } 955 /* remember that we had to traverse mountpoint */ 956 did_traverse = TRUE; 957 vp = tvp; 958 different_export = 1; 959 } else if (vp->v_vfsp != dvp->v_vfsp) { 960 /* 961 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 962 * then vp is probably an LOFS object. We don't need the 963 * realvp, we just need to know that we might have crossed 964 * a server fs boundary and need to call checkexport4. 965 * (LOFS lookup hides server fs mountpoints, and actually calls 966 * traverse) 967 */ 968 different_export = 1; 969 did_traverse = FALSE; 970 } 971 972 /* 973 * Get the export information for it. 974 */ 975 if (different_export) { 976 977 bzero(&fid, sizeof (fid)); 978 fid.fid_len = MAXFIDSZ; 979 error = vop_fid_pseudo(vp, &fid); 980 if (error) { 981 VN_RELE(vp); 982 return (puterrno4(error)); 983 } 984 985 if (dotdot) 986 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 987 else 988 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 989 990 if (exi == NULL) { 991 if (did_traverse == TRUE) { 992 /* 993 * If this vnode is a mounted-on vnode, 994 * but the mounted-on file system is not 995 * exported, send back the secinfo for 996 * the exported node that the mounted-on 997 * vnode lives in. 998 */ 999 exi = cs->exi; 1000 } else { 1001 VN_RELE(vp); 1002 return (puterrno4(EACCES)); 1003 } 1004 } 1005 } else { 1006 exi = cs->exi; 1007 } 1008 ASSERT(exi != NULL); 1009 1010 1011 /* 1012 * Create the secinfo result based on the security information 1013 * from the exportinfo structure (exi). 1014 * 1015 * Return all flavors for a pseudo node. 1016 * For a real export node, return the flavor that the client 1017 * has access with. 1018 */ 1019 ASSERT(RW_LOCK_HELD(&exported_lock)); 1020 if (PSEUDO(exi)) { 1021 count = exi->exi_export.ex_seccnt; /* total sec count */ 1022 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1023 secp = exi->exi_export.ex_secinfo; 1024 1025 for (i = 0; i < count; i++) { 1026 si = &secp[i].s_secinfo; 1027 resok_val[i].flavor = si->sc_rpcnum; 1028 if (resok_val[i].flavor == RPCSEC_GSS) { 1029 rpcsec_gss_info *info; 1030 1031 info = &resok_val[i].flavor_info; 1032 info->qop = si->sc_qop; 1033 info->service = (rpc_gss_svc_t)si->sc_service; 1034 1035 /* get oid opaque data */ 1036 info->oid.sec_oid4_len = 1037 si->sc_gss_mech_type->length; 1038 info->oid.sec_oid4_val = kmem_alloc( 1039 si->sc_gss_mech_type->length, KM_SLEEP); 1040 bcopy( 1041 si->sc_gss_mech_type->elements, 1042 info->oid.sec_oid4_val, 1043 info->oid.sec_oid4_len); 1044 } 1045 } 1046 resp->SECINFO4resok_len = count; 1047 resp->SECINFO4resok_val = resok_val; 1048 } else { 1049 int ret_cnt = 0, k = 0; 1050 int *flavor_list; 1051 1052 count = exi->exi_export.ex_seccnt; /* total sec count */ 1053 secp = exi->exi_export.ex_secinfo; 1054 1055 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1056 /* find out which flavors to return */ 1057 for (i = 0; i < count; i ++) { 1058 int access, flavor, perm; 1059 1060 flavor = secp[i].s_secinfo.sc_nfsnum; 1061 perm = secp[i].s_flags; 1062 1063 access = nfsauth4_secinfo_access(exi, cs->req, 1064 flavor, perm); 1065 1066 if (! (access & NFSAUTH_DENIED) && 1067 ! (access & NFSAUTH_WRONGSEC)) { 1068 flavor_list[ret_cnt] = flavor; 1069 ret_cnt++; 1070 } 1071 } 1072 1073 /* Create the returning SECINFO value */ 1074 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1075 1076 for (i = 0; i < count; i++) { 1077 /* 1078 * If the flavor is in the flavor list, 1079 * fill in resok_val. 1080 */ 1081 si = &secp[i].s_secinfo; 1082 if (in_flavor_list(si->sc_nfsnum, 1083 flavor_list, ret_cnt)) { 1084 resok_val[k].flavor = si->sc_rpcnum; 1085 if (resok_val[k].flavor == RPCSEC_GSS) { 1086 rpcsec_gss_info *info; 1087 1088 info = &resok_val[k].flavor_info; 1089 info->qop = si->sc_qop; 1090 info->service = (rpc_gss_svc_t) 1091 si->sc_service; 1092 1093 /* get oid opaque data */ 1094 info->oid.sec_oid4_len = 1095 si->sc_gss_mech_type->length; 1096 info->oid.sec_oid4_val = kmem_alloc( 1097 si->sc_gss_mech_type->length, 1098 KM_SLEEP); 1099 bcopy(si->sc_gss_mech_type->elements, 1100 info->oid.sec_oid4_val, 1101 info->oid.sec_oid4_len); 1102 } 1103 k++; 1104 } 1105 if (k >= ret_cnt) 1106 break; 1107 } 1108 resp->SECINFO4resok_len = ret_cnt; 1109 resp->SECINFO4resok_val = resok_val; 1110 kmem_free(flavor_list, count * sizeof (int)); 1111 } 1112 1113 VN_RELE(vp); 1114 return (NFS4_OK); 1115 } 1116 1117 /* 1118 * SECINFO (Operation 33): Obtain required security information on 1119 * the component name in the format of (security-mechanism-oid, qop, service) 1120 * triplets. 1121 */ 1122 /* ARGSUSED */ 1123 static void 1124 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1125 struct compound_state *cs) 1126 { 1127 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1128 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1129 utf8string *utfnm = &args->name; 1130 uint_t len; 1131 char *nm; 1132 struct sockaddr *ca; 1133 char *name = NULL; 1134 1135 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1136 SECINFO4args *, args); 1137 1138 /* 1139 * Current file handle (cfh) should have been set before getting 1140 * into this function. If not, return error. 1141 */ 1142 if (cs->vp == NULL) { 1143 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1144 goto out; 1145 } 1146 1147 if (cs->vp->v_type != VDIR) { 1148 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1149 goto out; 1150 } 1151 1152 /* 1153 * Verify the component name. If failed, error out, but 1154 * do not error out if the component name is a "..". 1155 * SECINFO will return its parents secinfo data for SECINFO "..". 1156 */ 1157 if (!utf8_dir_verify(utfnm)) { 1158 if (utfnm->utf8string_len != 2 || 1159 utfnm->utf8string_val[0] != '.' || 1160 utfnm->utf8string_val[1] != '.') { 1161 *cs->statusp = resp->status = NFS4ERR_INVAL; 1162 goto out; 1163 } 1164 } 1165 1166 nm = utf8_to_str(utfnm, &len, NULL); 1167 if (nm == NULL) { 1168 *cs->statusp = resp->status = NFS4ERR_INVAL; 1169 goto out; 1170 } 1171 1172 if (len > MAXNAMELEN) { 1173 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1174 kmem_free(nm, len); 1175 goto out; 1176 } 1177 /* If necessary, convert to UTF-8 for illbehaved clients */ 1178 1179 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1180 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1181 MAXPATHLEN + 1); 1182 1183 if (name == NULL) { 1184 *cs->statusp = resp->status = NFS4ERR_INVAL; 1185 kmem_free(nm, len); 1186 goto out; 1187 } 1188 1189 1190 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1191 1192 if (name != nm) 1193 kmem_free(name, MAXPATHLEN + 1); 1194 kmem_free(nm, len); 1195 1196 out: 1197 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1198 SECINFO4res *, resp); 1199 } 1200 1201 /* 1202 * Free SECINFO result. 1203 */ 1204 /* ARGSUSED */ 1205 static void 1206 rfs4_op_secinfo_free(nfs_resop4 *resop) 1207 { 1208 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1209 int count, i; 1210 secinfo4 *resok_val; 1211 1212 /* If this is not an Ok result, nothing to free. */ 1213 if (resp->status != NFS4_OK) { 1214 return; 1215 } 1216 1217 count = resp->SECINFO4resok_len; 1218 resok_val = resp->SECINFO4resok_val; 1219 1220 for (i = 0; i < count; i++) { 1221 if (resok_val[i].flavor == RPCSEC_GSS) { 1222 rpcsec_gss_info *info; 1223 1224 info = &resok_val[i].flavor_info; 1225 kmem_free(info->oid.sec_oid4_val, 1226 info->oid.sec_oid4_len); 1227 } 1228 } 1229 kmem_free(resok_val, count * sizeof (secinfo4)); 1230 resp->SECINFO4resok_len = 0; 1231 resp->SECINFO4resok_val = NULL; 1232 } 1233 1234 /* ARGSUSED */ 1235 static void 1236 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1237 struct compound_state *cs) 1238 { 1239 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1240 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1241 int error; 1242 vnode_t *vp; 1243 struct vattr va; 1244 int checkwriteperm; 1245 cred_t *cr = cs->cr; 1246 bslabel_t *clabel, *slabel; 1247 ts_label_t *tslabel; 1248 boolean_t admin_low_client; 1249 1250 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1251 ACCESS4args *, args); 1252 1253 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1254 if (cs->access == CS_ACCESS_DENIED) { 1255 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1256 goto out; 1257 } 1258 #endif 1259 if (cs->vp == NULL) { 1260 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1261 goto out; 1262 } 1263 1264 ASSERT(cr != NULL); 1265 1266 vp = cs->vp; 1267 1268 /* 1269 * If the file system is exported read only, it is not appropriate 1270 * to check write permissions for regular files and directories. 1271 * Special files are interpreted by the client, so the underlying 1272 * permissions are sent back to the client for interpretation. 1273 */ 1274 if (rdonly4(cs->exi, cs->vp, req) && 1275 (vp->v_type == VREG || vp->v_type == VDIR)) 1276 checkwriteperm = 0; 1277 else 1278 checkwriteperm = 1; 1279 1280 /* 1281 * XXX 1282 * We need the mode so that we can correctly determine access 1283 * permissions relative to a mandatory lock file. Access to 1284 * mandatory lock files is denied on the server, so it might 1285 * as well be reflected to the server during the open. 1286 */ 1287 va.va_mask = AT_MODE; 1288 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1289 if (error) { 1290 *cs->statusp = resp->status = puterrno4(error); 1291 goto out; 1292 } 1293 resp->access = 0; 1294 resp->supported = 0; 1295 1296 if (is_system_labeled()) { 1297 ASSERT(req->rq_label != NULL); 1298 clabel = req->rq_label; 1299 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1300 "got client label from request(1)", 1301 struct svc_req *, req); 1302 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1303 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1304 *cs->statusp = resp->status = puterrno4(EACCES); 1305 goto out; 1306 } 1307 slabel = label2bslabel(tslabel); 1308 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1309 char *, "got server label(1) for vp(2)", 1310 bslabel_t *, slabel, vnode_t *, vp); 1311 1312 admin_low_client = B_FALSE; 1313 } else 1314 admin_low_client = B_TRUE; 1315 } 1316 1317 if (args->access & ACCESS4_READ) { 1318 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1319 if (!error && !MANDLOCK(vp, va.va_mode) && 1320 (!is_system_labeled() || admin_low_client || 1321 bldominates(clabel, slabel))) 1322 resp->access |= ACCESS4_READ; 1323 resp->supported |= ACCESS4_READ; 1324 } 1325 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1326 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1327 if (!error && (!is_system_labeled() || admin_low_client || 1328 bldominates(clabel, slabel))) 1329 resp->access |= ACCESS4_LOOKUP; 1330 resp->supported |= ACCESS4_LOOKUP; 1331 } 1332 if (checkwriteperm && 1333 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1334 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1335 if (!error && !MANDLOCK(vp, va.va_mode) && 1336 (!is_system_labeled() || admin_low_client || 1337 blequal(clabel, slabel))) 1338 resp->access |= 1339 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1340 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1341 } 1342 1343 if (checkwriteperm && 1344 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1345 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1346 if (!error && (!is_system_labeled() || admin_low_client || 1347 blequal(clabel, slabel))) 1348 resp->access |= ACCESS4_DELETE; 1349 resp->supported |= ACCESS4_DELETE; 1350 } 1351 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1352 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1353 if (!error && !MANDLOCK(vp, va.va_mode) && 1354 (!is_system_labeled() || admin_low_client || 1355 bldominates(clabel, slabel))) 1356 resp->access |= ACCESS4_EXECUTE; 1357 resp->supported |= ACCESS4_EXECUTE; 1358 } 1359 1360 if (is_system_labeled() && !admin_low_client) 1361 label_rele(tslabel); 1362 1363 *cs->statusp = resp->status = NFS4_OK; 1364 out: 1365 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1366 ACCESS4res *, resp); 1367 } 1368 1369 /* ARGSUSED */ 1370 static void 1371 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1372 struct compound_state *cs) 1373 { 1374 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1375 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1376 int error; 1377 vnode_t *vp = cs->vp; 1378 cred_t *cr = cs->cr; 1379 vattr_t va; 1380 1381 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1382 COMMIT4args *, args); 1383 1384 if (vp == NULL) { 1385 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1386 goto out; 1387 } 1388 if (cs->access == CS_ACCESS_DENIED) { 1389 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1390 goto out; 1391 } 1392 1393 if (args->offset + args->count < args->offset) { 1394 *cs->statusp = resp->status = NFS4ERR_INVAL; 1395 goto out; 1396 } 1397 1398 va.va_mask = AT_UID; 1399 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1400 1401 /* 1402 * If we can't get the attributes, then we can't do the 1403 * right access checking. So, we'll fail the request. 1404 */ 1405 if (error) { 1406 *cs->statusp = resp->status = puterrno4(error); 1407 goto out; 1408 } 1409 if (rdonly4(cs->exi, cs->vp, req)) { 1410 *cs->statusp = resp->status = NFS4ERR_ROFS; 1411 goto out; 1412 } 1413 1414 if (vp->v_type != VREG) { 1415 if (vp->v_type == VDIR) 1416 resp->status = NFS4ERR_ISDIR; 1417 else 1418 resp->status = NFS4ERR_INVAL; 1419 *cs->statusp = resp->status; 1420 goto out; 1421 } 1422 1423 if (crgetuid(cr) != va.va_uid && 1424 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1425 *cs->statusp = resp->status = puterrno4(error); 1426 goto out; 1427 } 1428 1429 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr, NULL); 1430 if (!error) 1431 error = VOP_FSYNC(vp, FNODSYNC, cr, NULL); 1432 1433 if (error) { 1434 *cs->statusp = resp->status = puterrno4(error); 1435 goto out; 1436 } 1437 1438 *cs->statusp = resp->status = NFS4_OK; 1439 resp->writeverf = Write4verf; 1440 out: 1441 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1442 COMMIT4res *, resp); 1443 } 1444 1445 /* 1446 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1447 * was completed. It does the nfsv4 create for special files. 1448 */ 1449 /* ARGSUSED */ 1450 static vnode_t * 1451 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1452 struct compound_state *cs, vattr_t *vap, char *nm) 1453 { 1454 int error; 1455 cred_t *cr = cs->cr; 1456 vnode_t *dvp = cs->vp; 1457 vnode_t *vp = NULL; 1458 int mode; 1459 enum vcexcl excl; 1460 1461 switch (args->type) { 1462 case NF4CHR: 1463 case NF4BLK: 1464 if (secpolicy_sys_devices(cr) != 0) { 1465 *cs->statusp = resp->status = NFS4ERR_PERM; 1466 return (NULL); 1467 } 1468 if (args->type == NF4CHR) 1469 vap->va_type = VCHR; 1470 else 1471 vap->va_type = VBLK; 1472 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1473 args->ftype4_u.devdata.specdata2); 1474 vap->va_mask |= AT_RDEV; 1475 break; 1476 case NF4SOCK: 1477 vap->va_type = VSOCK; 1478 break; 1479 case NF4FIFO: 1480 vap->va_type = VFIFO; 1481 break; 1482 default: 1483 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1484 return (NULL); 1485 } 1486 1487 /* 1488 * Must specify the mode. 1489 */ 1490 if (!(vap->va_mask & AT_MODE)) { 1491 *cs->statusp = resp->status = NFS4ERR_INVAL; 1492 return (NULL); 1493 } 1494 1495 excl = EXCL; 1496 1497 mode = 0; 1498 1499 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1500 if (error) { 1501 *cs->statusp = resp->status = puterrno4(error); 1502 return (NULL); 1503 } 1504 return (vp); 1505 } 1506 1507 /* 1508 * nfsv4 create is used to create non-regular files. For regular files, 1509 * use nfsv4 open. 1510 */ 1511 /* ARGSUSED */ 1512 static void 1513 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1514 struct compound_state *cs) 1515 { 1516 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1517 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1518 int error; 1519 struct vattr bva, iva, iva2, ava, *vap; 1520 cred_t *cr = cs->cr; 1521 vnode_t *dvp = cs->vp; 1522 vnode_t *vp = NULL; 1523 vnode_t *realvp; 1524 char *nm, *lnm; 1525 uint_t len, llen; 1526 int syncval = 0; 1527 struct nfs4_svgetit_arg sarg; 1528 struct nfs4_ntov_table ntov; 1529 struct statvfs64 sb; 1530 nfsstat4 status; 1531 struct sockaddr *ca; 1532 char *name = NULL; 1533 char *lname = NULL; 1534 1535 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1536 CREATE4args *, args); 1537 1538 resp->attrset = 0; 1539 1540 if (dvp == NULL) { 1541 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1542 goto out; 1543 } 1544 1545 /* 1546 * If there is an unshared filesystem mounted on this vnode, 1547 * do not allow to create an object in this directory. 1548 */ 1549 if (vn_ismntpt(dvp)) { 1550 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1551 goto out; 1552 } 1553 1554 /* Verify that type is correct */ 1555 switch (args->type) { 1556 case NF4LNK: 1557 case NF4BLK: 1558 case NF4CHR: 1559 case NF4SOCK: 1560 case NF4FIFO: 1561 case NF4DIR: 1562 break; 1563 default: 1564 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1565 goto out; 1566 }; 1567 1568 if (cs->access == CS_ACCESS_DENIED) { 1569 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1570 goto out; 1571 } 1572 if (dvp->v_type != VDIR) { 1573 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1574 goto out; 1575 } 1576 if (!utf8_dir_verify(&args->objname)) { 1577 *cs->statusp = resp->status = NFS4ERR_INVAL; 1578 goto out; 1579 } 1580 1581 if (rdonly4(cs->exi, cs->vp, req)) { 1582 *cs->statusp = resp->status = NFS4ERR_ROFS; 1583 goto out; 1584 } 1585 1586 /* 1587 * Name of newly created object 1588 */ 1589 nm = utf8_to_fn(&args->objname, &len, NULL); 1590 if (nm == NULL) { 1591 *cs->statusp = resp->status = NFS4ERR_INVAL; 1592 goto out; 1593 } 1594 1595 if (len > MAXNAMELEN) { 1596 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1597 kmem_free(nm, len); 1598 goto out; 1599 } 1600 1601 /* If necessary, convert to UTF-8 for poorly behaved clients */ 1602 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1603 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1604 MAXPATHLEN + 1); 1605 1606 if (name == NULL) { 1607 *cs->statusp = resp->status = NFS4ERR_INVAL; 1608 kmem_free(nm, len); 1609 goto out; 1610 } 1611 1612 resp->attrset = 0; 1613 1614 sarg.sbp = &sb; 1615 sarg.is_referral = B_FALSE; 1616 nfs4_ntov_table_init(&ntov); 1617 1618 status = do_rfs4_set_attrs(&resp->attrset, 1619 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1620 1621 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1622 status = NFS4ERR_INVAL; 1623 1624 if (status != NFS4_OK) { 1625 *cs->statusp = resp->status = status; 1626 kmem_free(nm, len); 1627 nfs4_ntov_table_free(&ntov, &sarg); 1628 resp->attrset = 0; 1629 goto out; 1630 } 1631 1632 /* Get "before" change value */ 1633 bva.va_mask = AT_CTIME|AT_SEQ; 1634 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1635 if (error) { 1636 *cs->statusp = resp->status = puterrno4(error); 1637 kmem_free(nm, len); 1638 nfs4_ntov_table_free(&ntov, &sarg); 1639 resp->attrset = 0; 1640 goto out; 1641 } 1642 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1643 1644 vap = sarg.vap; 1645 1646 /* 1647 * Set default initial values for attributes when not specified 1648 * in createattrs. 1649 */ 1650 if ((vap->va_mask & AT_UID) == 0) { 1651 vap->va_uid = crgetuid(cr); 1652 vap->va_mask |= AT_UID; 1653 } 1654 if ((vap->va_mask & AT_GID) == 0) { 1655 vap->va_gid = crgetgid(cr); 1656 vap->va_mask |= AT_GID; 1657 } 1658 1659 vap->va_mask |= AT_TYPE; 1660 switch (args->type) { 1661 case NF4DIR: 1662 vap->va_type = VDIR; 1663 if ((vap->va_mask & AT_MODE) == 0) { 1664 vap->va_mode = 0700; /* default: owner rwx only */ 1665 vap->va_mask |= AT_MODE; 1666 } 1667 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1668 if (error) 1669 break; 1670 1671 /* 1672 * Get the initial "after" sequence number, if it fails, 1673 * set to zero 1674 */ 1675 iva.va_mask = AT_SEQ; 1676 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1677 iva.va_seq = 0; 1678 break; 1679 case NF4LNK: 1680 vap->va_type = VLNK; 1681 if ((vap->va_mask & AT_MODE) == 0) { 1682 vap->va_mode = 0700; /* default: owner rwx only */ 1683 vap->va_mask |= AT_MODE; 1684 } 1685 1686 /* 1687 * symlink names must be treated as data 1688 */ 1689 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1690 1691 if (lnm == NULL) { 1692 *cs->statusp = resp->status = NFS4ERR_INVAL; 1693 if (name != nm) 1694 kmem_free(name, MAXPATHLEN + 1); 1695 kmem_free(nm, len); 1696 nfs4_ntov_table_free(&ntov, &sarg); 1697 resp->attrset = 0; 1698 goto out; 1699 } 1700 1701 if (llen > MAXPATHLEN) { 1702 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1703 if (name != nm) 1704 kmem_free(name, MAXPATHLEN + 1); 1705 kmem_free(nm, len); 1706 kmem_free(lnm, llen); 1707 nfs4_ntov_table_free(&ntov, &sarg); 1708 resp->attrset = 0; 1709 goto out; 1710 } 1711 1712 lname = nfscmd_convname(ca, cs->exi, lnm, 1713 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1714 1715 if (lname == NULL) { 1716 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1717 if (name != nm) 1718 kmem_free(name, MAXPATHLEN + 1); 1719 kmem_free(nm, len); 1720 kmem_free(lnm, llen); 1721 nfs4_ntov_table_free(&ntov, &sarg); 1722 resp->attrset = 0; 1723 goto out; 1724 } 1725 1726 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1727 if (lname != lnm) 1728 kmem_free(lname, MAXPATHLEN + 1); 1729 if (lnm != NULL) 1730 kmem_free(lnm, llen); 1731 if (error) 1732 break; 1733 1734 /* 1735 * Get the initial "after" sequence number, if it fails, 1736 * set to zero 1737 */ 1738 iva.va_mask = AT_SEQ; 1739 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1740 iva.va_seq = 0; 1741 1742 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1743 NULL, NULL, NULL); 1744 if (error) 1745 break; 1746 1747 /* 1748 * va_seq is not safe over VOP calls, check it again 1749 * if it has changed zero out iva to force atomic = FALSE. 1750 */ 1751 iva2.va_mask = AT_SEQ; 1752 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1753 iva2.va_seq != iva.va_seq) 1754 iva.va_seq = 0; 1755 break; 1756 default: 1757 /* 1758 * probably a special file. 1759 */ 1760 if ((vap->va_mask & AT_MODE) == 0) { 1761 vap->va_mode = 0600; /* default: owner rw only */ 1762 vap->va_mask |= AT_MODE; 1763 } 1764 syncval = FNODSYNC; 1765 /* 1766 * We know this will only generate one VOP call 1767 */ 1768 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1769 1770 if (vp == NULL) { 1771 if (name != nm) 1772 kmem_free(name, MAXPATHLEN + 1); 1773 kmem_free(nm, len); 1774 nfs4_ntov_table_free(&ntov, &sarg); 1775 resp->attrset = 0; 1776 goto out; 1777 } 1778 1779 /* 1780 * Get the initial "after" sequence number, if it fails, 1781 * set to zero 1782 */ 1783 iva.va_mask = AT_SEQ; 1784 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1785 iva.va_seq = 0; 1786 1787 break; 1788 } 1789 if (name != nm) 1790 kmem_free(name, MAXPATHLEN + 1); 1791 kmem_free(nm, len); 1792 1793 if (error) { 1794 *cs->statusp = resp->status = puterrno4(error); 1795 } 1796 1797 /* 1798 * Force modified data and metadata out to stable storage. 1799 */ 1800 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1801 1802 if (resp->status != NFS4_OK) { 1803 if (vp != NULL) 1804 VN_RELE(vp); 1805 nfs4_ntov_table_free(&ntov, &sarg); 1806 resp->attrset = 0; 1807 goto out; 1808 } 1809 1810 /* 1811 * Finish setup of cinfo response, "before" value already set. 1812 * Get "after" change value, if it fails, simply return the 1813 * before value. 1814 */ 1815 ava.va_mask = AT_CTIME|AT_SEQ; 1816 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1817 ava.va_ctime = bva.va_ctime; 1818 ava.va_seq = 0; 1819 } 1820 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1821 1822 /* 1823 * True verification that object was created with correct 1824 * attrs is impossible. The attrs could have been changed 1825 * immediately after object creation. If attributes did 1826 * not verify, the only recourse for the server is to 1827 * destroy the object. Maybe if some attrs (like gid) 1828 * are set incorrectly, the object should be destroyed; 1829 * however, seems bad as a default policy. Do we really 1830 * want to destroy an object over one of the times not 1831 * verifying correctly? For these reasons, the server 1832 * currently sets bits in attrset for createattrs 1833 * that were set; however, no verification is done. 1834 * 1835 * vmask_to_nmask accounts for vattr bits set on create 1836 * [do_rfs4_set_attrs() only sets resp bits for 1837 * non-vattr/vfs bits.] 1838 * Mask off any bits set by default so as not to return 1839 * more attrset bits than were requested in createattrs 1840 */ 1841 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1842 resp->attrset &= args->createattrs.attrmask; 1843 nfs4_ntov_table_free(&ntov, &sarg); 1844 1845 error = makefh4(&cs->fh, vp, cs->exi); 1846 if (error) { 1847 *cs->statusp = resp->status = puterrno4(error); 1848 } 1849 1850 /* 1851 * The cinfo.atomic = TRUE only if we got no errors, we have 1852 * non-zero va_seq's, and it has incremented by exactly one 1853 * during the creation and it didn't change during the VOP_LOOKUP 1854 * or VOP_FSYNC. 1855 */ 1856 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1857 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1858 resp->cinfo.atomic = TRUE; 1859 else 1860 resp->cinfo.atomic = FALSE; 1861 1862 /* 1863 * Force modified metadata out to stable storage. 1864 * 1865 * if a underlying vp exists, pass it to VOP_FSYNC 1866 */ 1867 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1868 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1869 else 1870 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1871 1872 if (resp->status != NFS4_OK) { 1873 VN_RELE(vp); 1874 goto out; 1875 } 1876 if (cs->vp) 1877 VN_RELE(cs->vp); 1878 1879 cs->vp = vp; 1880 *cs->statusp = resp->status = NFS4_OK; 1881 out: 1882 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1883 CREATE4res *, resp); 1884 } 1885 1886 /*ARGSUSED*/ 1887 static void 1888 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1889 struct compound_state *cs) 1890 { 1891 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1892 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1893 1894 rfs4_op_inval(argop, resop, req, cs); 1895 1896 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1897 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1898 } 1899 1900 /*ARGSUSED*/ 1901 static void 1902 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1903 struct compound_state *cs) 1904 { 1905 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1906 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1907 rfs4_deleg_state_t *dsp; 1908 nfsstat4 status; 1909 1910 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1911 DELEGRETURN4args *, args); 1912 1913 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1914 resp->status = *cs->statusp = status; 1915 if (status != NFS4_OK) 1916 goto out; 1917 1918 /* Ensure specified filehandle matches */ 1919 if (cs->vp != dsp->rds_finfo->rf_vp) { 1920 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1921 } else 1922 rfs4_return_deleg(dsp, FALSE); 1923 1924 rfs4_update_lease(dsp->rds_client); 1925 1926 rfs4_deleg_state_rele(dsp); 1927 out: 1928 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1929 DELEGRETURN4res *, resp); 1930 } 1931 1932 /* 1933 * Check to see if a given "flavor" is an explicitly shared flavor. 1934 * The assumption of this routine is the "flavor" is already a valid 1935 * flavor in the secinfo list of "exi". 1936 * 1937 * e.g. 1938 * # share -o sec=flavor1 /export 1939 * # share -o sec=flavor2 /export/home 1940 * 1941 * flavor2 is not an explicitly shared flavor for /export, 1942 * however it is in the secinfo list for /export thru the 1943 * server namespace setup. 1944 */ 1945 int 1946 is_exported_sec(int flavor, struct exportinfo *exi) 1947 { 1948 int i; 1949 struct secinfo *sp; 1950 1951 sp = exi->exi_export.ex_secinfo; 1952 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1953 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1954 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1955 return (SEC_REF_EXPORTED(&sp[i])); 1956 } 1957 } 1958 1959 /* Should not reach this point based on the assumption */ 1960 return (0); 1961 } 1962 1963 /* 1964 * Check if the security flavor used in the request matches what is 1965 * required at the export point or at the root pseudo node (exi_root). 1966 * 1967 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1968 * 1969 */ 1970 static int 1971 secinfo_match_or_authnone(struct compound_state *cs) 1972 { 1973 int i; 1974 struct secinfo *sp; 1975 1976 /* 1977 * Check cs->nfsflavor (from the request) against 1978 * the current export data in cs->exi. 1979 */ 1980 sp = cs->exi->exi_export.ex_secinfo; 1981 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1982 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1983 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1984 return (1); 1985 } 1986 1987 return (0); 1988 } 1989 1990 /* 1991 * Check the access authority for the client and return the correct error. 1992 */ 1993 nfsstat4 1994 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1995 { 1996 int authres; 1997 1998 /* 1999 * First, check if the security flavor used in the request 2000 * are among the flavors set in the server namespace. 2001 */ 2002 if (!secinfo_match_or_authnone(cs)) { 2003 *cs->statusp = NFS4ERR_WRONGSEC; 2004 return (*cs->statusp); 2005 } 2006 2007 authres = checkauth4(cs, req); 2008 2009 if (authres > 0) { 2010 *cs->statusp = NFS4_OK; 2011 if (! (cs->access & CS_ACCESS_LIMITED)) 2012 cs->access = CS_ACCESS_OK; 2013 } else if (authres == 0) { 2014 *cs->statusp = NFS4ERR_ACCESS; 2015 } else if (authres == -2) { 2016 *cs->statusp = NFS4ERR_WRONGSEC; 2017 } else { 2018 *cs->statusp = NFS4ERR_DELAY; 2019 } 2020 return (*cs->statusp); 2021 } 2022 2023 /* 2024 * bitmap4_to_attrmask is called by getattr and readdir. 2025 * It sets up the vattr mask and determines whether vfsstat call is needed 2026 * based on the input bitmap. 2027 * Returns nfsv4 status. 2028 */ 2029 static nfsstat4 2030 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2031 { 2032 int i; 2033 uint_t va_mask; 2034 struct statvfs64 *sbp = sargp->sbp; 2035 2036 sargp->sbp = NULL; 2037 sargp->flag = 0; 2038 sargp->rdattr_error = NFS4_OK; 2039 sargp->mntdfid_set = FALSE; 2040 if (sargp->cs->vp) 2041 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2042 FH4_ATTRDIR | FH4_NAMEDATTR); 2043 else 2044 sargp->xattr = 0; 2045 2046 /* 2047 * Set rdattr_error_req to true if return error per 2048 * failed entry rather than fail the readdir. 2049 */ 2050 if (breq & FATTR4_RDATTR_ERROR_MASK) 2051 sargp->rdattr_error_req = 1; 2052 else 2053 sargp->rdattr_error_req = 0; 2054 2055 /* 2056 * generate the va_mask 2057 * Handle the easy cases first 2058 */ 2059 switch (breq) { 2060 case NFS4_NTOV_ATTR_MASK: 2061 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2062 return (NFS4_OK); 2063 2064 case NFS4_FS_ATTR_MASK: 2065 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2066 sargp->sbp = sbp; 2067 return (NFS4_OK); 2068 2069 case NFS4_NTOV_ATTR_CACHE_MASK: 2070 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2071 return (NFS4_OK); 2072 2073 case FATTR4_LEASE_TIME_MASK: 2074 sargp->vap->va_mask = 0; 2075 return (NFS4_OK); 2076 2077 default: 2078 va_mask = 0; 2079 for (i = 0; i < nfs4_ntov_map_size; i++) { 2080 if ((breq & nfs4_ntov_map[i].fbit) && 2081 nfs4_ntov_map[i].vbit) 2082 va_mask |= nfs4_ntov_map[i].vbit; 2083 } 2084 2085 /* 2086 * Check is vfsstat is needed 2087 */ 2088 if (breq & NFS4_FS_ATTR_MASK) 2089 sargp->sbp = sbp; 2090 2091 sargp->vap->va_mask = va_mask; 2092 return (NFS4_OK); 2093 } 2094 /* NOTREACHED */ 2095 } 2096 2097 /* 2098 * bitmap4_get_sysattrs is called by getattr and readdir. 2099 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2100 * Returns nfsv4 status. 2101 */ 2102 static nfsstat4 2103 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2104 { 2105 int error; 2106 struct compound_state *cs = sargp->cs; 2107 vnode_t *vp = cs->vp; 2108 2109 if (sargp->sbp != NULL) { 2110 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2111 sargp->sbp = NULL; /* to identify error */ 2112 return (puterrno4(error)); 2113 } 2114 } 2115 2116 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2117 } 2118 2119 static void 2120 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2121 { 2122 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2123 KM_SLEEP); 2124 ntovp->attrcnt = 0; 2125 ntovp->vfsstat = FALSE; 2126 } 2127 2128 static void 2129 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2130 struct nfs4_svgetit_arg *sargp) 2131 { 2132 int i; 2133 union nfs4_attr_u *na; 2134 uint8_t *amap; 2135 2136 /* 2137 * XXX Should do the same checks for whether the bit is set 2138 */ 2139 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2140 i < ntovp->attrcnt; i++, na++, amap++) { 2141 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2142 NFS4ATTR_FREEIT, sargp, na); 2143 } 2144 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2145 /* 2146 * xdr_free for getattr will be done later 2147 */ 2148 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2149 i < ntovp->attrcnt; i++, na++, amap++) { 2150 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2151 } 2152 } 2153 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2154 } 2155 2156 /* 2157 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2158 */ 2159 static nfsstat4 2160 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2161 struct nfs4_svgetit_arg *sargp) 2162 { 2163 int error = 0; 2164 int i, k; 2165 struct nfs4_ntov_table ntov; 2166 XDR xdr; 2167 ulong_t xdr_size; 2168 char *xdr_attrs; 2169 nfsstat4 status = NFS4_OK; 2170 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2171 union nfs4_attr_u *na; 2172 uint8_t *amap; 2173 2174 sargp->op = NFS4ATTR_GETIT; 2175 sargp->flag = 0; 2176 2177 fattrp->attrmask = 0; 2178 /* if no bits requested, then return empty fattr4 */ 2179 if (breq == 0) { 2180 fattrp->attrlist4_len = 0; 2181 fattrp->attrlist4 = NULL; 2182 return (NFS4_OK); 2183 } 2184 2185 /* 2186 * return NFS4ERR_INVAL when client requests write-only attrs 2187 */ 2188 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2189 return (NFS4ERR_INVAL); 2190 2191 nfs4_ntov_table_init(&ntov); 2192 na = ntov.na; 2193 amap = ntov.amap; 2194 2195 /* 2196 * Now loop to get or verify the attrs 2197 */ 2198 for (i = 0; i < nfs4_ntov_map_size; i++) { 2199 if (breq & nfs4_ntov_map[i].fbit) { 2200 if ((*nfs4_ntov_map[i].sv_getit)( 2201 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2202 2203 error = (*nfs4_ntov_map[i].sv_getit)( 2204 NFS4ATTR_GETIT, sargp, na); 2205 2206 /* 2207 * Possible error values: 2208 * >0 if sv_getit failed to 2209 * get the attr; 0 if succeeded; 2210 * <0 if rdattr_error and the 2211 * attribute cannot be returned. 2212 */ 2213 if (error && !(sargp->rdattr_error_req)) 2214 goto done; 2215 /* 2216 * If error then just for entry 2217 */ 2218 if (error == 0) { 2219 fattrp->attrmask |= 2220 nfs4_ntov_map[i].fbit; 2221 *amap++ = 2222 (uint8_t)nfs4_ntov_map[i].nval; 2223 na++; 2224 (ntov.attrcnt)++; 2225 } else if ((error > 0) && 2226 (sargp->rdattr_error == NFS4_OK)) { 2227 sargp->rdattr_error = puterrno4(error); 2228 } 2229 error = 0; 2230 } 2231 } 2232 } 2233 2234 /* 2235 * If rdattr_error was set after the return value for it was assigned, 2236 * update it. 2237 */ 2238 if (prev_rdattr_error != sargp->rdattr_error) { 2239 na = ntov.na; 2240 amap = ntov.amap; 2241 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2242 k = *amap; 2243 if (k < FATTR4_RDATTR_ERROR) { 2244 continue; 2245 } 2246 if ((k == FATTR4_RDATTR_ERROR) && 2247 ((*nfs4_ntov_map[k].sv_getit)( 2248 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2249 2250 (void) (*nfs4_ntov_map[k].sv_getit)( 2251 NFS4ATTR_GETIT, sargp, na); 2252 } 2253 break; 2254 } 2255 } 2256 2257 xdr_size = 0; 2258 na = ntov.na; 2259 amap = ntov.amap; 2260 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2261 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2262 } 2263 2264 fattrp->attrlist4_len = xdr_size; 2265 if (xdr_size) { 2266 /* freed by rfs4_op_getattr_free() */ 2267 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2268 2269 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2270 2271 na = ntov.na; 2272 amap = ntov.amap; 2273 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2274 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2275 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2276 int, *amap); 2277 status = NFS4ERR_SERVERFAULT; 2278 break; 2279 } 2280 } 2281 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2282 } else { 2283 fattrp->attrlist4 = NULL; 2284 } 2285 done: 2286 2287 nfs4_ntov_table_free(&ntov, sargp); 2288 2289 if (error != 0) 2290 status = puterrno4(error); 2291 2292 return (status); 2293 } 2294 2295 /* ARGSUSED */ 2296 static void 2297 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2298 struct compound_state *cs) 2299 { 2300 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2301 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2302 struct nfs4_svgetit_arg sarg; 2303 struct statvfs64 sb; 2304 nfsstat4 status; 2305 2306 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2307 GETATTR4args *, args); 2308 2309 if (cs->vp == NULL) { 2310 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2311 goto out; 2312 } 2313 2314 if (cs->access == CS_ACCESS_DENIED) { 2315 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2316 goto out; 2317 } 2318 2319 sarg.sbp = &sb; 2320 sarg.cs = cs; 2321 sarg.is_referral = B_FALSE; 2322 2323 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2324 if (status == NFS4_OK) { 2325 2326 status = bitmap4_get_sysattrs(&sarg); 2327 if (status == NFS4_OK) { 2328 2329 /* Is this a referral? */ 2330 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2331 /* Older V4 Solaris client sees a link */ 2332 if (client_is_downrev(req)) 2333 sarg.vap->va_type = VLNK; 2334 else 2335 sarg.is_referral = B_TRUE; 2336 } 2337 2338 status = do_rfs4_op_getattr(args->attr_request, 2339 &resp->obj_attributes, &sarg); 2340 } 2341 } 2342 *cs->statusp = resp->status = status; 2343 out: 2344 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2345 GETATTR4res *, resp); 2346 } 2347 2348 static void 2349 rfs4_op_getattr_free(nfs_resop4 *resop) 2350 { 2351 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2352 2353 nfs4_fattr4_free(&resp->obj_attributes); 2354 } 2355 2356 /* ARGSUSED */ 2357 static void 2358 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2359 struct compound_state *cs) 2360 { 2361 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2362 2363 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2364 2365 if (cs->vp == NULL) { 2366 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2367 goto out; 2368 } 2369 if (cs->access == CS_ACCESS_DENIED) { 2370 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2371 goto out; 2372 } 2373 2374 /* check for reparse point at the share point */ 2375 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2376 /* it's all bad */ 2377 cs->exi->exi_moved = 1; 2378 *cs->statusp = resp->status = NFS4ERR_MOVED; 2379 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2380 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2381 return; 2382 } 2383 2384 /* check for reparse point at vp */ 2385 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2386 /* it's not all bad */ 2387 *cs->statusp = resp->status = NFS4ERR_MOVED; 2388 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2389 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2390 return; 2391 } 2392 2393 resp->object.nfs_fh4_val = 2394 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2395 nfs_fh4_copy(&cs->fh, &resp->object); 2396 *cs->statusp = resp->status = NFS4_OK; 2397 out: 2398 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2399 GETFH4res *, resp); 2400 } 2401 2402 static void 2403 rfs4_op_getfh_free(nfs_resop4 *resop) 2404 { 2405 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2406 2407 if (resp->status == NFS4_OK && 2408 resp->object.nfs_fh4_val != NULL) { 2409 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2410 resp->object.nfs_fh4_val = NULL; 2411 resp->object.nfs_fh4_len = 0; 2412 } 2413 } 2414 2415 /* 2416 * illegal: args: void 2417 * res : status (NFS4ERR_OP_ILLEGAL) 2418 */ 2419 /* ARGSUSED */ 2420 static void 2421 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2422 struct svc_req *req, struct compound_state *cs) 2423 { 2424 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2425 2426 resop->resop = OP_ILLEGAL; 2427 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2428 } 2429 2430 /* 2431 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2432 * res: status. If success - CURRENT_FH unchanged, return change_info 2433 */ 2434 /* ARGSUSED */ 2435 static void 2436 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2437 struct compound_state *cs) 2438 { 2439 LINK4args *args = &argop->nfs_argop4_u.oplink; 2440 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2441 int error; 2442 vnode_t *vp; 2443 vnode_t *dvp; 2444 struct vattr bdva, idva, adva; 2445 char *nm; 2446 uint_t len; 2447 struct sockaddr *ca; 2448 char *name = NULL; 2449 2450 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2451 LINK4args *, args); 2452 2453 /* SAVED_FH: source object */ 2454 vp = cs->saved_vp; 2455 if (vp == NULL) { 2456 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2457 goto out; 2458 } 2459 2460 /* CURRENT_FH: target directory */ 2461 dvp = cs->vp; 2462 if (dvp == NULL) { 2463 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2464 goto out; 2465 } 2466 2467 /* 2468 * If there is a non-shared filesystem mounted on this vnode, 2469 * do not allow to link any file in this directory. 2470 */ 2471 if (vn_ismntpt(dvp)) { 2472 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2473 goto out; 2474 } 2475 2476 if (cs->access == CS_ACCESS_DENIED) { 2477 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2478 goto out; 2479 } 2480 2481 /* Check source object's type validity */ 2482 if (vp->v_type == VDIR) { 2483 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2484 goto out; 2485 } 2486 2487 /* Check target directory's type */ 2488 if (dvp->v_type != VDIR) { 2489 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2490 goto out; 2491 } 2492 2493 if (cs->saved_exi != cs->exi) { 2494 *cs->statusp = resp->status = NFS4ERR_XDEV; 2495 goto out; 2496 } 2497 2498 if (!utf8_dir_verify(&args->newname)) { 2499 *cs->statusp = resp->status = NFS4ERR_INVAL; 2500 goto out; 2501 } 2502 2503 nm = utf8_to_fn(&args->newname, &len, NULL); 2504 if (nm == NULL) { 2505 *cs->statusp = resp->status = NFS4ERR_INVAL; 2506 goto out; 2507 } 2508 2509 if (len > MAXNAMELEN) { 2510 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2511 kmem_free(nm, len); 2512 goto out; 2513 } 2514 2515 if (rdonly4(cs->exi, cs->vp, req)) { 2516 *cs->statusp = resp->status = NFS4ERR_ROFS; 2517 kmem_free(nm, len); 2518 goto out; 2519 } 2520 2521 /* Get "before" change value */ 2522 bdva.va_mask = AT_CTIME|AT_SEQ; 2523 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2524 if (error) { 2525 *cs->statusp = resp->status = puterrno4(error); 2526 kmem_free(nm, len); 2527 goto out; 2528 } 2529 2530 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2531 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2532 MAXPATHLEN + 1); 2533 2534 if (name == NULL) { 2535 *cs->statusp = resp->status = NFS4ERR_INVAL; 2536 kmem_free(nm, len); 2537 goto out; 2538 } 2539 2540 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2541 2542 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2543 2544 if (nm != name) 2545 kmem_free(name, MAXPATHLEN + 1); 2546 kmem_free(nm, len); 2547 2548 /* 2549 * Get the initial "after" sequence number, if it fails, set to zero 2550 */ 2551 idva.va_mask = AT_SEQ; 2552 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2553 idva.va_seq = 0; 2554 2555 /* 2556 * Force modified data and metadata out to stable storage. 2557 */ 2558 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2559 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2560 2561 if (error) { 2562 *cs->statusp = resp->status = puterrno4(error); 2563 goto out; 2564 } 2565 2566 /* 2567 * Get "after" change value, if it fails, simply return the 2568 * before value. 2569 */ 2570 adva.va_mask = AT_CTIME|AT_SEQ; 2571 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2572 adva.va_ctime = bdva.va_ctime; 2573 adva.va_seq = 0; 2574 } 2575 2576 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2577 2578 /* 2579 * The cinfo.atomic = TRUE only if we have 2580 * non-zero va_seq's, and it has incremented by exactly one 2581 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2582 */ 2583 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2584 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2585 resp->cinfo.atomic = TRUE; 2586 else 2587 resp->cinfo.atomic = FALSE; 2588 2589 *cs->statusp = resp->status = NFS4_OK; 2590 out: 2591 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2592 LINK4res *, resp); 2593 } 2594 2595 /* 2596 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2597 */ 2598 2599 /* ARGSUSED */ 2600 static nfsstat4 2601 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2602 struct compound_state *cs) 2603 { 2604 int error; 2605 int different_export = 0; 2606 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2607 struct exportinfo *exi = NULL, *pre_exi = NULL; 2608 nfsstat4 stat; 2609 fid_t fid; 2610 int attrdir, dotdot, walk; 2611 bool_t is_newvp = FALSE; 2612 2613 if (cs->vp->v_flag & V_XATTRDIR) { 2614 attrdir = 1; 2615 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2616 } else { 2617 attrdir = 0; 2618 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2619 } 2620 2621 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2622 2623 /* 2624 * If dotdotting, then need to check whether it's 2625 * above the root of a filesystem, or above an 2626 * export point. 2627 */ 2628 if (dotdot) { 2629 2630 /* 2631 * If dotdotting at the root of a filesystem, then 2632 * need to traverse back to the mounted-on filesystem 2633 * and do the dotdot lookup there. 2634 */ 2635 if (cs->vp->v_flag & VROOT) { 2636 2637 /* 2638 * If at the system root, then can 2639 * go up no further. 2640 */ 2641 if (VN_CMP(cs->vp, rootdir)) 2642 return (puterrno4(ENOENT)); 2643 2644 /* 2645 * Traverse back to the mounted-on filesystem 2646 */ 2647 cs->vp = untraverse(cs->vp); 2648 2649 /* 2650 * Set the different_export flag so we remember 2651 * to pick up a new exportinfo entry for 2652 * this new filesystem. 2653 */ 2654 different_export = 1; 2655 } else { 2656 2657 /* 2658 * If dotdotting above an export point then set 2659 * the different_export to get new export info. 2660 */ 2661 different_export = nfs_exported(cs->exi, cs->vp); 2662 } 2663 } 2664 2665 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2666 NULL, NULL, NULL); 2667 if (error) 2668 return (puterrno4(error)); 2669 2670 /* 2671 * If the vnode is in a pseudo filesystem, check whether it is visible. 2672 * 2673 * XXX if the vnode is a symlink and it is not visible in 2674 * a pseudo filesystem, return ENOENT (not following symlink). 2675 * V4 client can not mount such symlink. This is a regression 2676 * from V2/V3. 2677 * 2678 * In the same exported filesystem, if the security flavor used 2679 * is not an explicitly shared flavor, limit the view to the visible 2680 * list entries only. This is not a WRONGSEC case because it's already 2681 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2682 */ 2683 if (!different_export && 2684 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2685 cs->access & CS_ACCESS_LIMITED)) { 2686 if (! nfs_visible(cs->exi, vp, &different_export)) { 2687 VN_RELE(vp); 2688 return (puterrno4(ENOENT)); 2689 } 2690 } 2691 2692 /* 2693 * If it's a mountpoint, then traverse it. 2694 */ 2695 if (vn_ismntpt(vp)) { 2696 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2697 pre_tvp = vp; /* save pre-traversed vnode */ 2698 2699 /* 2700 * hold pre_tvp to counteract rele by traverse. We will 2701 * need pre_tvp below if checkexport4 fails 2702 */ 2703 VN_HOLD(pre_tvp); 2704 tvp = vp; 2705 if ((error = traverse(&tvp)) != 0) { 2706 VN_RELE(vp); 2707 VN_RELE(pre_tvp); 2708 return (puterrno4(error)); 2709 } 2710 vp = tvp; 2711 different_export = 1; 2712 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2713 /* 2714 * The vfsp comparison is to handle the case where 2715 * a LOFS mount is shared. lo_lookup traverses mount points, 2716 * and NFS is unaware of local fs transistions because 2717 * v_vfsmountedhere isn't set. For this special LOFS case, 2718 * the dir and the obj returned by lookup will have different 2719 * vfs ptrs. 2720 */ 2721 different_export = 1; 2722 } 2723 2724 if (different_export) { 2725 2726 bzero(&fid, sizeof (fid)); 2727 fid.fid_len = MAXFIDSZ; 2728 error = vop_fid_pseudo(vp, &fid); 2729 if (error) { 2730 VN_RELE(vp); 2731 if (pre_tvp) 2732 VN_RELE(pre_tvp); 2733 return (puterrno4(error)); 2734 } 2735 2736 if (dotdot) 2737 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2738 else 2739 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2740 2741 if (exi == NULL) { 2742 if (pre_tvp) { 2743 /* 2744 * If this vnode is a mounted-on vnode, 2745 * but the mounted-on file system is not 2746 * exported, send back the filehandle for 2747 * the mounted-on vnode, not the root of 2748 * the mounted-on file system. 2749 */ 2750 VN_RELE(vp); 2751 vp = pre_tvp; 2752 exi = pre_exi; 2753 } else { 2754 VN_RELE(vp); 2755 return (puterrno4(EACCES)); 2756 } 2757 } else if (pre_tvp) { 2758 /* we're done with pre_tvp now. release extra hold */ 2759 VN_RELE(pre_tvp); 2760 } 2761 2762 cs->exi = exi; 2763 2764 /* 2765 * Now we do a checkauth4. The reason is that 2766 * this client/user may not have access to the new 2767 * exported file system, and if he does, 2768 * the client/user may be mapped to a different uid. 2769 * 2770 * We start with a new cr, because the checkauth4 done 2771 * in the PUT*FH operation over wrote the cred's uid, 2772 * gid, etc, and we want the real thing before calling 2773 * checkauth4() 2774 */ 2775 crfree(cs->cr); 2776 cs->cr = crdup(cs->basecr); 2777 2778 if (cs->vp) 2779 oldvp = cs->vp; 2780 cs->vp = vp; 2781 is_newvp = TRUE; 2782 2783 stat = call_checkauth4(cs, req); 2784 if (stat != NFS4_OK) { 2785 VN_RELE(cs->vp); 2786 cs->vp = oldvp; 2787 return (stat); 2788 } 2789 } 2790 2791 /* 2792 * After various NFS checks, do a label check on the path 2793 * component. The label on this path should either be the 2794 * global zone's label or a zone's label. We are only 2795 * interested in the zone's label because exported files 2796 * in global zone is accessible (though read-only) to 2797 * clients. The exportability/visibility check is already 2798 * done before reaching this code. 2799 */ 2800 if (is_system_labeled()) { 2801 bslabel_t *clabel; 2802 2803 ASSERT(req->rq_label != NULL); 2804 clabel = req->rq_label; 2805 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2806 "got client label from request(1)", struct svc_req *, req); 2807 2808 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2809 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2810 cs->exi)) { 2811 error = EACCES; 2812 goto err_out; 2813 } 2814 } else { 2815 /* 2816 * We grant access to admin_low label clients 2817 * only if the client is trusted, i.e. also 2818 * running Solaris Trusted Extension. 2819 */ 2820 struct sockaddr *ca; 2821 int addr_type; 2822 void *ipaddr; 2823 tsol_tpc_t *tp; 2824 2825 ca = (struct sockaddr *)svc_getrpccaller( 2826 req->rq_xprt)->buf; 2827 if (ca->sa_family == AF_INET) { 2828 addr_type = IPV4_VERSION; 2829 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2830 } else if (ca->sa_family == AF_INET6) { 2831 addr_type = IPV6_VERSION; 2832 ipaddr = &((struct sockaddr_in6 *) 2833 ca)->sin6_addr; 2834 } 2835 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2836 if (tp == NULL || tp->tpc_tp.tp_doi != 2837 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2838 SUN_CIPSO) { 2839 if (tp != NULL) 2840 TPC_RELE(tp); 2841 error = EACCES; 2842 goto err_out; 2843 } 2844 TPC_RELE(tp); 2845 } 2846 } 2847 2848 error = makefh4(&cs->fh, vp, cs->exi); 2849 2850 err_out: 2851 if (error) { 2852 if (is_newvp) { 2853 VN_RELE(cs->vp); 2854 cs->vp = oldvp; 2855 } else 2856 VN_RELE(vp); 2857 return (puterrno4(error)); 2858 } 2859 2860 if (!is_newvp) { 2861 if (cs->vp) 2862 VN_RELE(cs->vp); 2863 cs->vp = vp; 2864 } else if (oldvp) 2865 VN_RELE(oldvp); 2866 2867 /* 2868 * if did lookup on attrdir and didn't lookup .., set named 2869 * attr fh flag 2870 */ 2871 if (attrdir && ! dotdot) 2872 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2873 2874 /* Assume false for now, open proc will set this */ 2875 cs->mandlock = FALSE; 2876 2877 return (NFS4_OK); 2878 } 2879 2880 /* ARGSUSED */ 2881 static void 2882 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2883 struct compound_state *cs) 2884 { 2885 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2886 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2887 char *nm; 2888 uint_t len; 2889 struct sockaddr *ca; 2890 char *name = NULL; 2891 2892 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2893 LOOKUP4args *, args); 2894 2895 if (cs->vp == NULL) { 2896 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2897 goto out; 2898 } 2899 2900 if (cs->vp->v_type == VLNK) { 2901 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2902 goto out; 2903 } 2904 2905 if (cs->vp->v_type != VDIR) { 2906 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2907 goto out; 2908 } 2909 2910 if (!utf8_dir_verify(&args->objname)) { 2911 *cs->statusp = resp->status = NFS4ERR_INVAL; 2912 goto out; 2913 } 2914 2915 nm = utf8_to_str(&args->objname, &len, NULL); 2916 if (nm == NULL) { 2917 *cs->statusp = resp->status = NFS4ERR_INVAL; 2918 goto out; 2919 } 2920 2921 if (len > MAXNAMELEN) { 2922 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2923 kmem_free(nm, len); 2924 goto out; 2925 } 2926 2927 /* If necessary, convert to UTF-8 for illbehaved clients */ 2928 2929 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2930 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2931 MAXPATHLEN + 1); 2932 2933 if (name == NULL) { 2934 *cs->statusp = resp->status = NFS4ERR_INVAL; 2935 kmem_free(nm, len); 2936 goto out; 2937 } 2938 2939 *cs->statusp = resp->status = do_rfs4_op_lookup(name, len, req, cs); 2940 2941 if (name != nm) 2942 kmem_free(name, MAXPATHLEN + 1); 2943 kmem_free(nm, len); 2944 2945 out: 2946 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2947 LOOKUP4res *, resp); 2948 } 2949 2950 /* ARGSUSED */ 2951 static void 2952 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2953 struct compound_state *cs) 2954 { 2955 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2956 2957 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2958 2959 if (cs->vp == NULL) { 2960 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2961 goto out; 2962 } 2963 2964 if (cs->vp->v_type != VDIR) { 2965 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2966 goto out; 2967 } 2968 2969 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2970 2971 /* 2972 * From NFSV4 Specification, LOOKUPP should not check for 2973 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2974 */ 2975 if (resp->status == NFS4ERR_WRONGSEC) { 2976 *cs->statusp = resp->status = NFS4_OK; 2977 } 2978 2979 out: 2980 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2981 LOOKUPP4res *, resp); 2982 } 2983 2984 2985 /*ARGSUSED2*/ 2986 static void 2987 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2988 struct compound_state *cs) 2989 { 2990 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2991 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2992 vnode_t *avp = NULL; 2993 int lookup_flags = LOOKUP_XATTR, error; 2994 int exp_ro = 0; 2995 2996 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2997 OPENATTR4args *, args); 2998 2999 if (cs->vp == NULL) { 3000 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3001 goto out; 3002 } 3003 3004 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3005 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3006 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3007 goto out; 3008 } 3009 3010 /* 3011 * If file system supports passing ACE mask to VOP_ACCESS then 3012 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3013 */ 3014 3015 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3016 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3017 V_ACE_MASK, cs->cr, NULL); 3018 else 3019 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3020 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3021 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3022 3023 if (error) { 3024 *cs->statusp = resp->status = puterrno4(EACCES); 3025 goto out; 3026 } 3027 3028 /* 3029 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3030 * the file system is exported read-only -- regardless of 3031 * createdir flag. Otherwise the attrdir would be created 3032 * (assuming server fs isn't mounted readonly locally). If 3033 * VOP_LOOKUP returns ENOENT in this case, the error will 3034 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3035 * because specfs has no VOP_LOOKUP op, so the macro would 3036 * return ENOSYS. EINVAL is returned by all (current) 3037 * Solaris file system implementations when any of their 3038 * restrictions are violated (xattr(dir) can't have xattrdir). 3039 * Returning NOTSUPP is more appropriate in this case 3040 * because the object will never be able to have an attrdir. 3041 */ 3042 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3043 lookup_flags |= CREATE_XATTR_DIR; 3044 3045 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3046 NULL, NULL, NULL); 3047 3048 if (error) { 3049 if (error == ENOENT && args->createdir && exp_ro) 3050 *cs->statusp = resp->status = puterrno4(EROFS); 3051 else if (error == EINVAL || error == ENOSYS) 3052 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3053 else 3054 *cs->statusp = resp->status = puterrno4(error); 3055 goto out; 3056 } 3057 3058 ASSERT(avp->v_flag & V_XATTRDIR); 3059 3060 error = makefh4(&cs->fh, avp, cs->exi); 3061 3062 if (error) { 3063 VN_RELE(avp); 3064 *cs->statusp = resp->status = puterrno4(error); 3065 goto out; 3066 } 3067 3068 VN_RELE(cs->vp); 3069 cs->vp = avp; 3070 3071 /* 3072 * There is no requirement for an attrdir fh flag 3073 * because the attrdir has a vnode flag to distinguish 3074 * it from regular (non-xattr) directories. The 3075 * FH4_ATTRDIR flag is set for future sanity checks. 3076 */ 3077 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3078 *cs->statusp = resp->status = NFS4_OK; 3079 3080 out: 3081 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3082 OPENATTR4res *, resp); 3083 } 3084 3085 static int 3086 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3087 caller_context_t *ct) 3088 { 3089 int error; 3090 int i; 3091 clock_t delaytime; 3092 3093 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3094 3095 /* 3096 * Don't block on mandatory locks. If this routine returns 3097 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3098 */ 3099 uio->uio_fmode = FNONBLOCK; 3100 3101 for (i = 0; i < rfs4_maxlock_tries; i++) { 3102 3103 3104 if (direction == FREAD) { 3105 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3106 error = VOP_READ(vp, uio, ioflag, cred, ct); 3107 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3108 } else { 3109 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3110 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3111 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3112 } 3113 3114 if (error != EAGAIN) 3115 break; 3116 3117 if (i < rfs4_maxlock_tries - 1) { 3118 delay(delaytime); 3119 delaytime *= 2; 3120 } 3121 } 3122 3123 return (error); 3124 } 3125 3126 /* ARGSUSED */ 3127 static void 3128 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3129 struct compound_state *cs) 3130 { 3131 READ4args *args = &argop->nfs_argop4_u.opread; 3132 READ4res *resp = &resop->nfs_resop4_u.opread; 3133 int error; 3134 int verror; 3135 vnode_t *vp; 3136 struct vattr va; 3137 struct iovec iov; 3138 struct uio uio; 3139 u_offset_t offset; 3140 bool_t *deleg = &cs->deleg; 3141 nfsstat4 stat; 3142 int in_crit = 0; 3143 mblk_t *mp; 3144 int alloc_err = 0; 3145 caller_context_t ct; 3146 3147 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3148 READ4args, args); 3149 3150 vp = cs->vp; 3151 if (vp == NULL) { 3152 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3153 goto out; 3154 } 3155 if (cs->access == CS_ACCESS_DENIED) { 3156 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3157 goto out; 3158 } 3159 3160 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3161 deleg, TRUE, &ct)) != NFS4_OK) { 3162 *cs->statusp = resp->status = stat; 3163 goto out; 3164 } 3165 3166 /* 3167 * Enter the critical region before calling VOP_RWLOCK 3168 * to avoid a deadlock with write requests. 3169 */ 3170 if (nbl_need_check(vp)) { 3171 nbl_start_crit(vp, RW_READER); 3172 in_crit = 1; 3173 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3174 &ct)) { 3175 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3176 goto out; 3177 } 3178 } 3179 3180 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3181 deleg, TRUE, &ct)) != NFS4_OK) { 3182 *cs->statusp = resp->status = stat; 3183 goto out; 3184 } 3185 3186 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3187 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3188 3189 /* 3190 * If we can't get the attributes, then we can't do the 3191 * right access checking. So, we'll fail the request. 3192 */ 3193 if (verror) { 3194 *cs->statusp = resp->status = puterrno4(verror); 3195 goto out; 3196 } 3197 3198 if (vp->v_type != VREG) { 3199 *cs->statusp = resp->status = 3200 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3201 goto out; 3202 } 3203 3204 if (crgetuid(cs->cr) != va.va_uid && 3205 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3206 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3207 *cs->statusp = resp->status = puterrno4(error); 3208 goto out; 3209 } 3210 3211 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3212 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3213 goto out; 3214 } 3215 3216 offset = args->offset; 3217 if (offset >= va.va_size) { 3218 *cs->statusp = resp->status = NFS4_OK; 3219 resp->eof = TRUE; 3220 resp->data_len = 0; 3221 resp->data_val = NULL; 3222 resp->mblk = NULL; 3223 /* RDMA */ 3224 resp->wlist = args->wlist; 3225 resp->wlist_len = resp->data_len; 3226 *cs->statusp = resp->status = NFS4_OK; 3227 if (resp->wlist) 3228 clist_zero_len(resp->wlist); 3229 goto out; 3230 } 3231 3232 if (args->count == 0) { 3233 *cs->statusp = resp->status = NFS4_OK; 3234 resp->eof = FALSE; 3235 resp->data_len = 0; 3236 resp->data_val = NULL; 3237 resp->mblk = NULL; 3238 /* RDMA */ 3239 resp->wlist = args->wlist; 3240 resp->wlist_len = resp->data_len; 3241 if (resp->wlist) 3242 clist_zero_len(resp->wlist); 3243 goto out; 3244 } 3245 3246 /* 3247 * Do not allocate memory more than maximum allowed 3248 * transfer size 3249 */ 3250 if (args->count > rfs4_tsize(req)) 3251 args->count = rfs4_tsize(req); 3252 3253 /* 3254 * If returning data via RDMA Write, then grab the chunk list. If we 3255 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3256 */ 3257 if (args->wlist) { 3258 mp = NULL; 3259 (void) rdma_get_wchunk(req, &iov, args->wlist); 3260 } else { 3261 /* 3262 * mp will contain the data to be sent out in the read reply. 3263 * It will be freed after the reply has been sent. Let's 3264 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3265 * the call to xdrmblk_putmblk() never fails. If the first 3266 * alloc of the requested size fails, then decrease the size to 3267 * something more reasonable and wait for the allocation to 3268 * occur. 3269 */ 3270 mp = allocb(RNDUP(args->count), BPRI_MED); 3271 if (mp == NULL) { 3272 if (args->count > MAXBSIZE) 3273 args->count = MAXBSIZE; 3274 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3275 STR_NOSIG, &alloc_err); 3276 } 3277 ASSERT(mp != NULL); 3278 ASSERT(alloc_err == 0); 3279 3280 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3281 iov.iov_len = args->count; 3282 } 3283 3284 uio.uio_iov = &iov; 3285 uio.uio_iovcnt = 1; 3286 uio.uio_segflg = UIO_SYSSPACE; 3287 uio.uio_extflg = UIO_COPY_CACHED; 3288 uio.uio_loffset = args->offset; 3289 uio.uio_resid = args->count; 3290 3291 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3292 3293 va.va_mask = AT_SIZE; 3294 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3295 3296 if (error) { 3297 freeb(mp); 3298 *cs->statusp = resp->status = puterrno4(error); 3299 goto out; 3300 } 3301 3302 *cs->statusp = resp->status = NFS4_OK; 3303 3304 ASSERT(uio.uio_resid >= 0); 3305 resp->data_len = args->count - uio.uio_resid; 3306 if (mp) { 3307 resp->data_val = (char *)mp->b_datap->db_base; 3308 } else { 3309 resp->data_val = (caddr_t)iov.iov_base; 3310 } 3311 resp->mblk = mp; 3312 3313 if (!verror && offset + resp->data_len == va.va_size) 3314 resp->eof = TRUE; 3315 else 3316 resp->eof = FALSE; 3317 3318 if (args->wlist) { 3319 if (!rdma_setup_read_data4(args, resp)) { 3320 *cs->statusp = resp->status = NFS4ERR_INVAL; 3321 } 3322 } else { 3323 resp->wlist = NULL; 3324 } 3325 3326 out: 3327 if (in_crit) 3328 nbl_end_crit(vp); 3329 3330 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3331 READ4res *, resp); 3332 } 3333 3334 static void 3335 rfs4_op_read_free(nfs_resop4 *resop) 3336 { 3337 READ4res *resp = &resop->nfs_resop4_u.opread; 3338 3339 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3340 freeb(resp->mblk); 3341 resp->mblk = NULL; 3342 resp->data_val = NULL; 3343 resp->data_len = 0; 3344 } 3345 } 3346 3347 static void 3348 rfs4_op_readdir_free(nfs_resop4 * resop) 3349 { 3350 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3351 3352 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3353 freeb(resp->mblk); 3354 resp->mblk = NULL; 3355 resp->data_len = 0; 3356 } 3357 } 3358 3359 3360 /* ARGSUSED */ 3361 static void 3362 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3363 struct compound_state *cs) 3364 { 3365 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3366 int error; 3367 vnode_t *vp; 3368 struct exportinfo *exi, *sav_exi; 3369 nfs_fh4_fmt_t *fh_fmtp; 3370 3371 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3372 3373 if (cs->vp) { 3374 VN_RELE(cs->vp); 3375 cs->vp = NULL; 3376 } 3377 3378 if (cs->cr) 3379 crfree(cs->cr); 3380 3381 cs->cr = crdup(cs->basecr); 3382 3383 vp = exi_public->exi_vp; 3384 if (vp == NULL) { 3385 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3386 goto out; 3387 } 3388 3389 error = makefh4(&cs->fh, vp, exi_public); 3390 if (error != 0) { 3391 *cs->statusp = resp->status = puterrno4(error); 3392 goto out; 3393 } 3394 sav_exi = cs->exi; 3395 if (exi_public == exi_root) { 3396 /* 3397 * No filesystem is actually shared public, so we default 3398 * to exi_root. In this case, we must check whether root 3399 * is exported. 3400 */ 3401 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3402 3403 /* 3404 * if root filesystem is exported, the exportinfo struct that we 3405 * should use is what checkexport4 returns, because root_exi is 3406 * actually a mostly empty struct. 3407 */ 3408 exi = checkexport4(&fh_fmtp->fh4_fsid, 3409 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3410 cs->exi = ((exi != NULL) ? exi : exi_public); 3411 } else { 3412 /* 3413 * it's a properly shared filesystem 3414 */ 3415 cs->exi = exi_public; 3416 } 3417 3418 if (is_system_labeled()) { 3419 bslabel_t *clabel; 3420 3421 ASSERT(req->rq_label != NULL); 3422 clabel = req->rq_label; 3423 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3424 "got client label from request(1)", 3425 struct svc_req *, req); 3426 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3427 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3428 cs->exi)) { 3429 *cs->statusp = resp->status = 3430 NFS4ERR_SERVERFAULT; 3431 goto out; 3432 } 3433 } 3434 } 3435 3436 VN_HOLD(vp); 3437 cs->vp = vp; 3438 3439 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3440 VN_RELE(cs->vp); 3441 cs->vp = NULL; 3442 cs->exi = sav_exi; 3443 goto out; 3444 } 3445 3446 *cs->statusp = resp->status = NFS4_OK; 3447 out: 3448 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3449 PUTPUBFH4res *, resp); 3450 } 3451 3452 /* 3453 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3454 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3455 * or joe have restrictive search permissions, then we shouldn't let 3456 * the client get a file handle. This is easy to enforce. However, we 3457 * don't know what security flavor should be used until we resolve the 3458 * path name. Another complication is uid mapping. If root is 3459 * the user, then it will be mapped to the anonymous user by default, 3460 * but we won't know that till we've resolved the path name. And we won't 3461 * know what the anonymous user is. 3462 * Luckily, SECINFO is specified to take a full filename. 3463 * So what we will have to in rfs4_op_lookup is check that flavor of 3464 * the target object matches that of the request, and if root was the 3465 * caller, check for the root= and anon= options, and if necessary, 3466 * repeat the lookup using the right cred_t. But that's not done yet. 3467 */ 3468 /* ARGSUSED */ 3469 static void 3470 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3471 struct compound_state *cs) 3472 { 3473 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3474 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3475 nfs_fh4_fmt_t *fh_fmtp; 3476 3477 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3478 PUTFH4args *, args); 3479 3480 if (cs->vp) { 3481 VN_RELE(cs->vp); 3482 cs->vp = NULL; 3483 } 3484 3485 if (cs->cr) { 3486 crfree(cs->cr); 3487 cs->cr = NULL; 3488 } 3489 3490 3491 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3492 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3493 goto out; 3494 } 3495 3496 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3497 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3498 NULL); 3499 3500 if (cs->exi == NULL) { 3501 *cs->statusp = resp->status = NFS4ERR_STALE; 3502 goto out; 3503 } 3504 3505 cs->cr = crdup(cs->basecr); 3506 3507 ASSERT(cs->cr != NULL); 3508 3509 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3510 *cs->statusp = resp->status; 3511 goto out; 3512 } 3513 3514 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3515 VN_RELE(cs->vp); 3516 cs->vp = NULL; 3517 goto out; 3518 } 3519 3520 nfs_fh4_copy(&args->object, &cs->fh); 3521 *cs->statusp = resp->status = NFS4_OK; 3522 cs->deleg = FALSE; 3523 3524 out: 3525 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3526 PUTFH4res *, resp); 3527 } 3528 3529 /* ARGSUSED */ 3530 static void 3531 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3532 struct compound_state *cs) 3533 { 3534 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3535 int error; 3536 fid_t fid; 3537 struct exportinfo *exi, *sav_exi; 3538 3539 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3540 3541 if (cs->vp) { 3542 VN_RELE(cs->vp); 3543 cs->vp = NULL; 3544 } 3545 3546 if (cs->cr) 3547 crfree(cs->cr); 3548 3549 cs->cr = crdup(cs->basecr); 3550 3551 /* 3552 * Using rootdir, the system root vnode, 3553 * get its fid. 3554 */ 3555 bzero(&fid, sizeof (fid)); 3556 fid.fid_len = MAXFIDSZ; 3557 error = vop_fid_pseudo(rootdir, &fid); 3558 if (error != 0) { 3559 *cs->statusp = resp->status = puterrno4(error); 3560 goto out; 3561 } 3562 3563 /* 3564 * Then use the root fsid & fid it to find out if it's exported 3565 * 3566 * If the server root isn't exported directly, then 3567 * it should at least be a pseudo export based on 3568 * one or more exports further down in the server's 3569 * file tree. 3570 */ 3571 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3572 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3573 NFS4_DEBUG(rfs4_debug, 3574 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3575 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3576 goto out; 3577 } 3578 3579 /* 3580 * Now make a filehandle based on the root 3581 * export and root vnode. 3582 */ 3583 error = makefh4(&cs->fh, rootdir, exi); 3584 if (error != 0) { 3585 *cs->statusp = resp->status = puterrno4(error); 3586 goto out; 3587 } 3588 3589 sav_exi = cs->exi; 3590 cs->exi = exi; 3591 3592 VN_HOLD(rootdir); 3593 cs->vp = rootdir; 3594 3595 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3596 VN_RELE(rootdir); 3597 cs->vp = NULL; 3598 cs->exi = sav_exi; 3599 goto out; 3600 } 3601 3602 *cs->statusp = resp->status = NFS4_OK; 3603 cs->deleg = FALSE; 3604 out: 3605 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3606 PUTROOTFH4res *, resp); 3607 } 3608 3609 /* 3610 * A directory entry is a valid nfsv4 entry if 3611 * - it has a non-zero ino 3612 * - it is not a dot or dotdot name 3613 * - it is visible in a pseudo export or in a real export that can 3614 * only have a limited view. 3615 */ 3616 static bool_t 3617 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3618 int *expseudo, int check_visible) 3619 { 3620 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3621 *expseudo = 0; 3622 return (FALSE); 3623 } 3624 3625 if (! check_visible) { 3626 *expseudo = 0; 3627 return (TRUE); 3628 } 3629 3630 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3631 } 3632 3633 /* 3634 * set_rdattr_params sets up the variables used to manage what information 3635 * to get for each directory entry. 3636 */ 3637 static nfsstat4 3638 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3639 bitmap4 attrs, bool_t *need_to_lookup) 3640 { 3641 uint_t va_mask; 3642 nfsstat4 status; 3643 bitmap4 objbits; 3644 3645 status = bitmap4_to_attrmask(attrs, sargp); 3646 if (status != NFS4_OK) { 3647 /* 3648 * could not even figure attr mask 3649 */ 3650 return (status); 3651 } 3652 va_mask = sargp->vap->va_mask; 3653 3654 /* 3655 * dirent's d_ino is always correct value for mounted_on_fileid. 3656 * mntdfid_set is set once here, but mounted_on_fileid is 3657 * set in main dirent processing loop for each dirent. 3658 * The mntdfid_set is a simple optimization that lets the 3659 * server attr code avoid work when caller is readdir. 3660 */ 3661 sargp->mntdfid_set = TRUE; 3662 3663 /* 3664 * Lookup entry only if client asked for any of the following: 3665 * a) vattr attrs 3666 * b) vfs attrs 3667 * c) attrs w/per-object scope requested (change, filehandle, etc) 3668 * other than mounted_on_fileid (which we can take from dirent) 3669 */ 3670 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3671 3672 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3673 *need_to_lookup = TRUE; 3674 else 3675 *need_to_lookup = FALSE; 3676 3677 if (sargp->sbp == NULL) 3678 return (NFS4_OK); 3679 3680 /* 3681 * If filesystem attrs are requested, get them now from the 3682 * directory vp, as most entries will have same filesystem. The only 3683 * exception are mounted over entries but we handle 3684 * those as we go (XXX mounted over detection not yet implemented). 3685 */ 3686 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3687 status = bitmap4_get_sysattrs(sargp); 3688 sargp->vap->va_mask = va_mask; 3689 3690 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3691 /* 3692 * Failed to get filesystem attributes. 3693 * Return a rdattr_error for each entry, but don't fail. 3694 * However, don't get any obj-dependent attrs. 3695 */ 3696 sargp->rdattr_error = status; /* for rdattr_error */ 3697 *need_to_lookup = FALSE; 3698 /* 3699 * At least get fileid for regular readdir output 3700 */ 3701 sargp->vap->va_mask &= AT_NODEID; 3702 status = NFS4_OK; 3703 } 3704 3705 return (status); 3706 } 3707 3708 /* 3709 * readlink: args: CURRENT_FH. 3710 * res: status. If success - CURRENT_FH unchanged, return linktext. 3711 */ 3712 3713 /* ARGSUSED */ 3714 static void 3715 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3716 struct compound_state *cs) 3717 { 3718 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3719 int error; 3720 vnode_t *vp; 3721 struct iovec iov; 3722 struct vattr va; 3723 struct uio uio; 3724 char *data; 3725 struct sockaddr *ca; 3726 char *name = NULL; 3727 int is_referral; 3728 3729 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3730 3731 /* CURRENT_FH: directory */ 3732 vp = cs->vp; 3733 if (vp == NULL) { 3734 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3735 goto out; 3736 } 3737 3738 if (cs->access == CS_ACCESS_DENIED) { 3739 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3740 goto out; 3741 } 3742 3743 /* Is it a referral? */ 3744 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3745 3746 is_referral = 1; 3747 3748 } else { 3749 3750 is_referral = 0; 3751 3752 if (vp->v_type == VDIR) { 3753 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3754 goto out; 3755 } 3756 3757 if (vp->v_type != VLNK) { 3758 *cs->statusp = resp->status = NFS4ERR_INVAL; 3759 goto out; 3760 } 3761 3762 } 3763 3764 va.va_mask = AT_MODE; 3765 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3766 if (error) { 3767 *cs->statusp = resp->status = puterrno4(error); 3768 goto out; 3769 } 3770 3771 if (MANDLOCK(vp, va.va_mode)) { 3772 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3773 goto out; 3774 } 3775 3776 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3777 3778 if (is_referral) { 3779 char *s; 3780 size_t strsz; 3781 3782 /* Get an artificial symlink based on a referral */ 3783 s = build_symlink(vp, cs->cr, &strsz); 3784 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3785 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3786 vnode_t *, vp, char *, s); 3787 if (s == NULL) 3788 error = EINVAL; 3789 else { 3790 error = 0; 3791 (void) strlcpy(data, s, MAXPATHLEN + 1); 3792 kmem_free(s, strsz); 3793 } 3794 3795 } else { 3796 3797 iov.iov_base = data; 3798 iov.iov_len = MAXPATHLEN; 3799 uio.uio_iov = &iov; 3800 uio.uio_iovcnt = 1; 3801 uio.uio_segflg = UIO_SYSSPACE; 3802 uio.uio_extflg = UIO_COPY_CACHED; 3803 uio.uio_loffset = 0; 3804 uio.uio_resid = MAXPATHLEN; 3805 3806 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3807 3808 if (!error) 3809 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3810 } 3811 3812 if (error) { 3813 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3814 *cs->statusp = resp->status = puterrno4(error); 3815 goto out; 3816 } 3817 3818 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3819 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3820 MAXPATHLEN + 1); 3821 3822 if (name == NULL) { 3823 /* 3824 * Even though the conversion failed, we return 3825 * something. We just don't translate it. 3826 */ 3827 name = data; 3828 } 3829 3830 /* 3831 * treat link name as data 3832 */ 3833 (void) str_to_utf8(name, &resp->link); 3834 3835 if (name != data) 3836 kmem_free(name, MAXPATHLEN + 1); 3837 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3838 *cs->statusp = resp->status = NFS4_OK; 3839 3840 out: 3841 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3842 READLINK4res *, resp); 3843 } 3844 3845 static void 3846 rfs4_op_readlink_free(nfs_resop4 *resop) 3847 { 3848 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3849 utf8string *symlink = &resp->link; 3850 3851 if (symlink->utf8string_val) { 3852 UTF8STRING_FREE(*symlink) 3853 } 3854 } 3855 3856 /* 3857 * release_lockowner: 3858 * Release any state associated with the supplied 3859 * lockowner. Note if any lo_state is holding locks we will not 3860 * rele that lo_state and thus the lockowner will not be destroyed. 3861 * A client using lock after the lock owner stateid has been released 3862 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3863 * to reissue the lock with new_lock_owner set to TRUE. 3864 * args: lock_owner 3865 * res: status 3866 */ 3867 /* ARGSUSED */ 3868 static void 3869 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3870 struct svc_req *req, struct compound_state *cs) 3871 { 3872 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3873 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3874 rfs4_lockowner_t *lo; 3875 rfs4_openowner_t *oo; 3876 rfs4_state_t *sp; 3877 rfs4_lo_state_t *lsp; 3878 rfs4_client_t *cp; 3879 bool_t create = FALSE; 3880 locklist_t *llist; 3881 sysid_t sysid; 3882 3883 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3884 cs, RELEASE_LOCKOWNER4args *, ap); 3885 3886 /* Make sure there is a clientid around for this request */ 3887 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3888 3889 if (cp == NULL) { 3890 *cs->statusp = resp->status = 3891 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3892 goto out; 3893 } 3894 rfs4_client_rele(cp); 3895 3896 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3897 if (lo == NULL) { 3898 *cs->statusp = resp->status = NFS4_OK; 3899 goto out; 3900 } 3901 ASSERT(lo->rl_client != NULL); 3902 3903 /* 3904 * Check for EXPIRED client. If so will reap state with in a lease 3905 * period or on next set_clientid_confirm step 3906 */ 3907 if (rfs4_lease_expired(lo->rl_client)) { 3908 rfs4_lockowner_rele(lo); 3909 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3910 goto out; 3911 } 3912 3913 /* 3914 * If no sysid has been assigned, then no locks exist; just return. 3915 */ 3916 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3917 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3918 rfs4_lockowner_rele(lo); 3919 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3920 goto out; 3921 } 3922 3923 sysid = lo->rl_client->rc_sysidt; 3924 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3925 3926 /* 3927 * Mark the lockowner invalid. 3928 */ 3929 rfs4_dbe_hide(lo->rl_dbe); 3930 3931 /* 3932 * sysid-pid pair should now not be used since the lockowner is 3933 * invalid. If the client were to instantiate the lockowner again 3934 * it would be assigned a new pid. Thus we can get the list of 3935 * current locks. 3936 */ 3937 3938 llist = flk_get_active_locks(sysid, lo->rl_pid); 3939 /* If we are still holding locks fail */ 3940 if (llist != NULL) { 3941 3942 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3943 3944 flk_free_locklist(llist); 3945 /* 3946 * We need to unhide the lockowner so the client can 3947 * try it again. The bad thing here is if the client 3948 * has a logic error that took it here in the first place 3949 * he probably has lost accounting of the locks that it 3950 * is holding. So we may have dangling state until the 3951 * open owner state is reaped via close. One scenario 3952 * that could possibly occur is that the client has 3953 * sent the unlock request(s) in separate threads 3954 * and has not waited for the replies before sending the 3955 * RELEASE_LOCKOWNER request. Presumably, it would expect 3956 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3957 * reissuing the request. 3958 */ 3959 rfs4_dbe_unhide(lo->rl_dbe); 3960 rfs4_lockowner_rele(lo); 3961 goto out; 3962 } 3963 3964 /* 3965 * For the corresponding client we need to check each open 3966 * owner for any opens that have lockowner state associated 3967 * with this lockowner. 3968 */ 3969 3970 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3971 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 3972 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 3973 3974 rfs4_dbe_lock(oo->ro_dbe); 3975 for (sp = list_head(&oo->ro_statelist); sp != NULL; 3976 sp = list_next(&oo->ro_statelist, sp)) { 3977 3978 rfs4_dbe_lock(sp->rs_dbe); 3979 for (lsp = list_head(&sp->rs_lostatelist); 3980 lsp != NULL; 3981 lsp = list_next(&sp->rs_lostatelist, lsp)) { 3982 if (lsp->rls_locker == lo) { 3983 rfs4_dbe_lock(lsp->rls_dbe); 3984 rfs4_dbe_invalidate(lsp->rls_dbe); 3985 rfs4_dbe_unlock(lsp->rls_dbe); 3986 } 3987 } 3988 rfs4_dbe_unlock(sp->rs_dbe); 3989 } 3990 rfs4_dbe_unlock(oo->ro_dbe); 3991 } 3992 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3993 3994 rfs4_lockowner_rele(lo); 3995 3996 *cs->statusp = resp->status = NFS4_OK; 3997 3998 out: 3999 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4000 cs, RELEASE_LOCKOWNER4res *, resp); 4001 } 4002 4003 /* 4004 * short utility function to lookup a file and recall the delegation 4005 */ 4006 static rfs4_file_t * 4007 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4008 int *lkup_error, cred_t *cr) 4009 { 4010 vnode_t *vp; 4011 rfs4_file_t *fp = NULL; 4012 bool_t fcreate = FALSE; 4013 int error; 4014 4015 if (vpp) 4016 *vpp = NULL; 4017 4018 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4019 NULL)) == 0) { 4020 if (vp->v_type == VREG) 4021 fp = rfs4_findfile(vp, NULL, &fcreate); 4022 if (vpp) 4023 *vpp = vp; 4024 else 4025 VN_RELE(vp); 4026 } 4027 4028 if (lkup_error) 4029 *lkup_error = error; 4030 4031 return (fp); 4032 } 4033 4034 /* 4035 * remove: args: CURRENT_FH: directory; name. 4036 * res: status. If success - CURRENT_FH unchanged, return change_info 4037 * for directory. 4038 */ 4039 /* ARGSUSED */ 4040 static void 4041 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4042 struct compound_state *cs) 4043 { 4044 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4045 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4046 int error; 4047 vnode_t *dvp, *vp; 4048 struct vattr bdva, idva, adva; 4049 char *nm; 4050 uint_t len; 4051 rfs4_file_t *fp; 4052 int in_crit = 0; 4053 bslabel_t *clabel; 4054 struct sockaddr *ca; 4055 char *name = NULL; 4056 4057 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4058 REMOVE4args *, args); 4059 4060 /* CURRENT_FH: directory */ 4061 dvp = cs->vp; 4062 if (dvp == NULL) { 4063 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4064 goto out; 4065 } 4066 4067 if (cs->access == CS_ACCESS_DENIED) { 4068 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4069 goto out; 4070 } 4071 4072 /* 4073 * If there is an unshared filesystem mounted on this vnode, 4074 * Do not allow to remove anything in this directory. 4075 */ 4076 if (vn_ismntpt(dvp)) { 4077 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4078 goto out; 4079 } 4080 4081 if (dvp->v_type != VDIR) { 4082 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4083 goto out; 4084 } 4085 4086 if (!utf8_dir_verify(&args->target)) { 4087 *cs->statusp = resp->status = NFS4ERR_INVAL; 4088 goto out; 4089 } 4090 4091 /* 4092 * Lookup the file so that we can check if it's a directory 4093 */ 4094 nm = utf8_to_fn(&args->target, &len, NULL); 4095 if (nm == NULL) { 4096 *cs->statusp = resp->status = NFS4ERR_INVAL; 4097 goto out; 4098 } 4099 4100 if (len > MAXNAMELEN) { 4101 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4102 kmem_free(nm, len); 4103 goto out; 4104 } 4105 4106 if (rdonly4(cs->exi, cs->vp, req)) { 4107 *cs->statusp = resp->status = NFS4ERR_ROFS; 4108 kmem_free(nm, len); 4109 goto out; 4110 } 4111 4112 /* If necessary, convert to UTF-8 for illbehaved clients */ 4113 4114 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4115 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4116 MAXPATHLEN + 1); 4117 4118 if (name == NULL) { 4119 *cs->statusp = resp->status = NFS4ERR_INVAL; 4120 kmem_free(nm, len); 4121 goto out; 4122 } 4123 4124 /* 4125 * Lookup the file to determine type and while we are see if 4126 * there is a file struct around and check for delegation. 4127 * We don't need to acquire va_seq before this lookup, if 4128 * it causes an update, cinfo.before will not match, which will 4129 * trigger a cache flush even if atomic is TRUE. 4130 */ 4131 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4132 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4133 NULL)) { 4134 VN_RELE(vp); 4135 rfs4_file_rele(fp); 4136 *cs->statusp = resp->status = NFS4ERR_DELAY; 4137 if (nm != name) 4138 kmem_free(name, MAXPATHLEN + 1); 4139 kmem_free(nm, len); 4140 goto out; 4141 } 4142 } 4143 4144 /* Didn't find anything to remove */ 4145 if (vp == NULL) { 4146 *cs->statusp = resp->status = error; 4147 if (nm != name) 4148 kmem_free(name, MAXPATHLEN + 1); 4149 kmem_free(nm, len); 4150 goto out; 4151 } 4152 4153 if (nbl_need_check(vp)) { 4154 nbl_start_crit(vp, RW_READER); 4155 in_crit = 1; 4156 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4157 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4158 if (nm != name) 4159 kmem_free(name, MAXPATHLEN + 1); 4160 kmem_free(nm, len); 4161 nbl_end_crit(vp); 4162 VN_RELE(vp); 4163 if (fp) { 4164 rfs4_clear_dont_grant(fp); 4165 rfs4_file_rele(fp); 4166 } 4167 goto out; 4168 } 4169 } 4170 4171 /* check label before allowing removal */ 4172 if (is_system_labeled()) { 4173 ASSERT(req->rq_label != NULL); 4174 clabel = req->rq_label; 4175 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4176 "got client label from request(1)", 4177 struct svc_req *, req); 4178 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4179 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4180 cs->exi)) { 4181 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4182 if (name != nm) 4183 kmem_free(name, MAXPATHLEN + 1); 4184 kmem_free(nm, len); 4185 if (in_crit) 4186 nbl_end_crit(vp); 4187 VN_RELE(vp); 4188 if (fp) { 4189 rfs4_clear_dont_grant(fp); 4190 rfs4_file_rele(fp); 4191 } 4192 goto out; 4193 } 4194 } 4195 } 4196 4197 /* Get dir "before" change value */ 4198 bdva.va_mask = AT_CTIME|AT_SEQ; 4199 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4200 if (error) { 4201 *cs->statusp = resp->status = puterrno4(error); 4202 if (nm != name) 4203 kmem_free(name, MAXPATHLEN + 1); 4204 kmem_free(nm, len); 4205 if (in_crit) 4206 nbl_end_crit(vp); 4207 VN_RELE(vp); 4208 if (fp) { 4209 rfs4_clear_dont_grant(fp); 4210 rfs4_file_rele(fp); 4211 } 4212 goto out; 4213 } 4214 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4215 4216 /* Actually do the REMOVE operation */ 4217 if (vp->v_type == VDIR) { 4218 /* 4219 * Can't remove a directory that has a mounted-on filesystem. 4220 */ 4221 if (vn_ismntpt(vp)) { 4222 error = EACCES; 4223 } else { 4224 /* 4225 * System V defines rmdir to return EEXIST, 4226 * not * ENOTEMPTY, if the directory is not 4227 * empty. A System V NFS server needs to map 4228 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4229 * transmit over the wire. 4230 */ 4231 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4232 NULL, 0)) == EEXIST) 4233 error = ENOTEMPTY; 4234 } 4235 } else { 4236 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4237 fp != NULL) { 4238 struct vattr va; 4239 vnode_t *tvp; 4240 4241 rfs4_dbe_lock(fp->rf_dbe); 4242 tvp = fp->rf_vp; 4243 if (tvp) 4244 VN_HOLD(tvp); 4245 rfs4_dbe_unlock(fp->rf_dbe); 4246 4247 if (tvp) { 4248 /* 4249 * This is va_seq safe because we are not 4250 * manipulating dvp. 4251 */ 4252 va.va_mask = AT_NLINK; 4253 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4254 va.va_nlink == 0) { 4255 /* Remove state on file remove */ 4256 if (in_crit) { 4257 nbl_end_crit(vp); 4258 in_crit = 0; 4259 } 4260 rfs4_close_all_state(fp); 4261 } 4262 VN_RELE(tvp); 4263 } 4264 } 4265 } 4266 4267 if (in_crit) 4268 nbl_end_crit(vp); 4269 VN_RELE(vp); 4270 4271 if (fp) { 4272 rfs4_clear_dont_grant(fp); 4273 rfs4_file_rele(fp); 4274 } 4275 if (nm != name) 4276 kmem_free(name, MAXPATHLEN + 1); 4277 kmem_free(nm, len); 4278 4279 if (error) { 4280 *cs->statusp = resp->status = puterrno4(error); 4281 goto out; 4282 } 4283 4284 /* 4285 * Get the initial "after" sequence number, if it fails, set to zero 4286 */ 4287 idva.va_mask = AT_SEQ; 4288 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4289 idva.va_seq = 0; 4290 4291 /* 4292 * Force modified data and metadata out to stable storage. 4293 */ 4294 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4295 4296 /* 4297 * Get "after" change value, if it fails, simply return the 4298 * before value. 4299 */ 4300 adva.va_mask = AT_CTIME|AT_SEQ; 4301 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4302 adva.va_ctime = bdva.va_ctime; 4303 adva.va_seq = 0; 4304 } 4305 4306 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4307 4308 /* 4309 * The cinfo.atomic = TRUE only if we have 4310 * non-zero va_seq's, and it has incremented by exactly one 4311 * during the VOP_REMOVE/RMDIR and it didn't change during 4312 * the VOP_FSYNC. 4313 */ 4314 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4315 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4316 resp->cinfo.atomic = TRUE; 4317 else 4318 resp->cinfo.atomic = FALSE; 4319 4320 *cs->statusp = resp->status = NFS4_OK; 4321 4322 out: 4323 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4324 REMOVE4res *, resp); 4325 } 4326 4327 /* 4328 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4329 * oldname and newname. 4330 * res: status. If success - CURRENT_FH unchanged, return change_info 4331 * for both from and target directories. 4332 */ 4333 /* ARGSUSED */ 4334 static void 4335 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4336 struct compound_state *cs) 4337 { 4338 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4339 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4340 int error; 4341 vnode_t *odvp; 4342 vnode_t *ndvp; 4343 vnode_t *srcvp, *targvp; 4344 struct vattr obdva, oidva, oadva; 4345 struct vattr nbdva, nidva, nadva; 4346 char *onm, *nnm; 4347 uint_t olen, nlen; 4348 rfs4_file_t *fp, *sfp; 4349 int in_crit_src, in_crit_targ; 4350 int fp_rele_grant_hold, sfp_rele_grant_hold; 4351 bslabel_t *clabel; 4352 struct sockaddr *ca; 4353 char *converted_onm = NULL; 4354 char *converted_nnm = NULL; 4355 4356 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4357 RENAME4args *, args); 4358 4359 fp = sfp = NULL; 4360 srcvp = targvp = NULL; 4361 in_crit_src = in_crit_targ = 0; 4362 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4363 4364 /* CURRENT_FH: target directory */ 4365 ndvp = cs->vp; 4366 if (ndvp == NULL) { 4367 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4368 goto out; 4369 } 4370 4371 /* SAVED_FH: from directory */ 4372 odvp = cs->saved_vp; 4373 if (odvp == NULL) { 4374 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4375 goto out; 4376 } 4377 4378 if (cs->access == CS_ACCESS_DENIED) { 4379 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4380 goto out; 4381 } 4382 4383 /* 4384 * If there is an unshared filesystem mounted on this vnode, 4385 * do not allow to rename objects in this directory. 4386 */ 4387 if (vn_ismntpt(odvp)) { 4388 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4389 goto out; 4390 } 4391 4392 /* 4393 * If there is an unshared filesystem mounted on this vnode, 4394 * do not allow to rename to this directory. 4395 */ 4396 if (vn_ismntpt(ndvp)) { 4397 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4398 goto out; 4399 } 4400 4401 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4402 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4403 goto out; 4404 } 4405 4406 if (cs->saved_exi != cs->exi) { 4407 *cs->statusp = resp->status = NFS4ERR_XDEV; 4408 goto out; 4409 } 4410 4411 if (!utf8_dir_verify(&args->oldname)) { 4412 *cs->statusp = resp->status = NFS4ERR_INVAL; 4413 goto out; 4414 } 4415 4416 if (!utf8_dir_verify(&args->newname)) { 4417 *cs->statusp = resp->status = NFS4ERR_INVAL; 4418 goto out; 4419 } 4420 4421 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4422 if (onm == NULL) { 4423 *cs->statusp = resp->status = NFS4ERR_INVAL; 4424 goto out; 4425 } 4426 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4427 nlen = MAXPATHLEN + 1; 4428 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4429 nlen); 4430 4431 if (converted_onm == NULL) { 4432 *cs->statusp = resp->status = NFS4ERR_INVAL; 4433 kmem_free(onm, olen); 4434 goto out; 4435 } 4436 4437 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4438 if (nnm == NULL) { 4439 *cs->statusp = resp->status = NFS4ERR_INVAL; 4440 if (onm != converted_onm) 4441 kmem_free(converted_onm, MAXPATHLEN + 1); 4442 kmem_free(onm, olen); 4443 goto out; 4444 } 4445 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4446 MAXPATHLEN + 1); 4447 4448 if (converted_nnm == NULL) { 4449 *cs->statusp = resp->status = NFS4ERR_INVAL; 4450 kmem_free(nnm, nlen); 4451 nnm = NULL; 4452 if (onm != converted_onm) 4453 kmem_free(converted_onm, MAXPATHLEN + 1); 4454 kmem_free(onm, olen); 4455 goto out; 4456 } 4457 4458 4459 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4460 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4461 kmem_free(onm, olen); 4462 kmem_free(nnm, nlen); 4463 goto out; 4464 } 4465 4466 4467 if (rdonly4(cs->exi, cs->vp, req)) { 4468 *cs->statusp = resp->status = NFS4ERR_ROFS; 4469 if (onm != converted_onm) 4470 kmem_free(converted_onm, MAXPATHLEN + 1); 4471 kmem_free(onm, olen); 4472 if (nnm != converted_nnm) 4473 kmem_free(converted_nnm, MAXPATHLEN + 1); 4474 kmem_free(nnm, nlen); 4475 goto out; 4476 } 4477 4478 /* check label of the target dir */ 4479 if (is_system_labeled()) { 4480 ASSERT(req->rq_label != NULL); 4481 clabel = req->rq_label; 4482 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4483 "got client label from request(1)", 4484 struct svc_req *, req); 4485 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4486 if (!do_rfs_label_check(clabel, ndvp, 4487 EQUALITY_CHECK, cs->exi)) { 4488 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4489 goto err_out; 4490 } 4491 } 4492 } 4493 4494 /* 4495 * Is the source a file and have a delegation? 4496 * We don't need to acquire va_seq before these lookups, if 4497 * it causes an update, cinfo.before will not match, which will 4498 * trigger a cache flush even if atomic is TRUE. 4499 */ 4500 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4501 &error, cs->cr)) { 4502 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4503 NULL)) { 4504 *cs->statusp = resp->status = NFS4ERR_DELAY; 4505 goto err_out; 4506 } 4507 } 4508 4509 if (srcvp == NULL) { 4510 *cs->statusp = resp->status = puterrno4(error); 4511 if (onm != converted_onm) 4512 kmem_free(converted_onm, MAXPATHLEN + 1); 4513 kmem_free(onm, olen); 4514 if (nnm != converted_nnm) 4515 kmem_free(converted_onm, MAXPATHLEN + 1); 4516 kmem_free(nnm, nlen); 4517 goto out; 4518 } 4519 4520 sfp_rele_grant_hold = 1; 4521 4522 /* Does the destination exist and a file and have a delegation? */ 4523 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4524 NULL, cs->cr)) { 4525 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4526 NULL)) { 4527 *cs->statusp = resp->status = NFS4ERR_DELAY; 4528 goto err_out; 4529 } 4530 } 4531 fp_rele_grant_hold = 1; 4532 4533 4534 /* Check for NBMAND lock on both source and target */ 4535 if (nbl_need_check(srcvp)) { 4536 nbl_start_crit(srcvp, RW_READER); 4537 in_crit_src = 1; 4538 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4539 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4540 goto err_out; 4541 } 4542 } 4543 4544 if (targvp && nbl_need_check(targvp)) { 4545 nbl_start_crit(targvp, RW_READER); 4546 in_crit_targ = 1; 4547 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4548 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4549 goto err_out; 4550 } 4551 } 4552 4553 /* Get source "before" change value */ 4554 obdva.va_mask = AT_CTIME|AT_SEQ; 4555 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4556 if (!error) { 4557 nbdva.va_mask = AT_CTIME|AT_SEQ; 4558 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4559 } 4560 if (error) { 4561 *cs->statusp = resp->status = puterrno4(error); 4562 goto err_out; 4563 } 4564 4565 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4566 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4567 4568 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4569 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4570 struct vattr va; 4571 vnode_t *tvp; 4572 4573 rfs4_dbe_lock(fp->rf_dbe); 4574 tvp = fp->rf_vp; 4575 if (tvp) 4576 VN_HOLD(tvp); 4577 rfs4_dbe_unlock(fp->rf_dbe); 4578 4579 if (tvp) { 4580 va.va_mask = AT_NLINK; 4581 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4582 va.va_nlink == 0) { 4583 /* The file is gone and so should the state */ 4584 if (in_crit_targ) { 4585 nbl_end_crit(targvp); 4586 in_crit_targ = 0; 4587 } 4588 rfs4_close_all_state(fp); 4589 } 4590 VN_RELE(tvp); 4591 } 4592 } 4593 if (error == 0) 4594 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4595 4596 if (in_crit_src) 4597 nbl_end_crit(srcvp); 4598 if (srcvp) 4599 VN_RELE(srcvp); 4600 if (in_crit_targ) 4601 nbl_end_crit(targvp); 4602 if (targvp) 4603 VN_RELE(targvp); 4604 4605 if (sfp) { 4606 rfs4_clear_dont_grant(sfp); 4607 rfs4_file_rele(sfp); 4608 } 4609 if (fp) { 4610 rfs4_clear_dont_grant(fp); 4611 rfs4_file_rele(fp); 4612 } 4613 4614 if (converted_onm != onm) 4615 kmem_free(converted_onm, MAXPATHLEN + 1); 4616 kmem_free(onm, olen); 4617 if (converted_nnm != nnm) 4618 kmem_free(converted_nnm, MAXPATHLEN + 1); 4619 kmem_free(nnm, nlen); 4620 4621 /* 4622 * Get the initial "after" sequence number, if it fails, set to zero 4623 */ 4624 oidva.va_mask = AT_SEQ; 4625 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4626 oidva.va_seq = 0; 4627 4628 nidva.va_mask = AT_SEQ; 4629 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4630 nidva.va_seq = 0; 4631 4632 /* 4633 * Force modified data and metadata out to stable storage. 4634 */ 4635 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4636 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4637 4638 if (error) { 4639 *cs->statusp = resp->status = puterrno4(error); 4640 goto out; 4641 } 4642 4643 /* 4644 * Get "after" change values, if it fails, simply return the 4645 * before value. 4646 */ 4647 oadva.va_mask = AT_CTIME|AT_SEQ; 4648 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4649 oadva.va_ctime = obdva.va_ctime; 4650 oadva.va_seq = 0; 4651 } 4652 4653 nadva.va_mask = AT_CTIME|AT_SEQ; 4654 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4655 nadva.va_ctime = nbdva.va_ctime; 4656 nadva.va_seq = 0; 4657 } 4658 4659 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4660 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4661 4662 /* 4663 * The cinfo.atomic = TRUE only if we have 4664 * non-zero va_seq's, and it has incremented by exactly one 4665 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4666 */ 4667 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4668 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4669 resp->source_cinfo.atomic = TRUE; 4670 else 4671 resp->source_cinfo.atomic = FALSE; 4672 4673 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4674 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4675 resp->target_cinfo.atomic = TRUE; 4676 else 4677 resp->target_cinfo.atomic = FALSE; 4678 4679 #ifdef VOLATILE_FH_TEST 4680 { 4681 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4682 4683 /* 4684 * Add the renamed file handle to the volatile rename list 4685 */ 4686 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4687 /* file handles may expire on rename */ 4688 vnode_t *vp; 4689 4690 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4691 /* 4692 * Already know that nnm will be a valid string 4693 */ 4694 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4695 NULL, NULL, NULL); 4696 kmem_free(nnm, nlen); 4697 if (!error) { 4698 add_volrnm_fh(cs->exi, vp); 4699 VN_RELE(vp); 4700 } 4701 } 4702 } 4703 #endif /* VOLATILE_FH_TEST */ 4704 4705 *cs->statusp = resp->status = NFS4_OK; 4706 out: 4707 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4708 RENAME4res *, resp); 4709 return; 4710 4711 err_out: 4712 if (onm != converted_onm) 4713 kmem_free(converted_onm, MAXPATHLEN + 1); 4714 if (onm != NULL) 4715 kmem_free(onm, olen); 4716 if (nnm != converted_nnm) 4717 kmem_free(converted_nnm, MAXPATHLEN + 1); 4718 if (nnm != NULL) 4719 kmem_free(nnm, nlen); 4720 4721 if (in_crit_src) nbl_end_crit(srcvp); 4722 if (in_crit_targ) nbl_end_crit(targvp); 4723 if (targvp) VN_RELE(targvp); 4724 if (srcvp) VN_RELE(srcvp); 4725 if (sfp) { 4726 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4727 rfs4_file_rele(sfp); 4728 } 4729 if (fp) { 4730 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4731 rfs4_file_rele(fp); 4732 } 4733 4734 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4735 RENAME4res *, resp); 4736 } 4737 4738 /* ARGSUSED */ 4739 static void 4740 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4741 struct compound_state *cs) 4742 { 4743 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4744 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4745 rfs4_client_t *cp; 4746 4747 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4748 RENEW4args *, args); 4749 4750 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4751 *cs->statusp = resp->status = 4752 rfs4_check_clientid(&args->clientid, 0); 4753 goto out; 4754 } 4755 4756 if (rfs4_lease_expired(cp)) { 4757 rfs4_client_rele(cp); 4758 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4759 goto out; 4760 } 4761 4762 rfs4_update_lease(cp); 4763 4764 mutex_enter(cp->rc_cbinfo.cb_lock); 4765 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4766 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4767 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4768 } else { 4769 *cs->statusp = resp->status = NFS4_OK; 4770 } 4771 mutex_exit(cp->rc_cbinfo.cb_lock); 4772 4773 rfs4_client_rele(cp); 4774 4775 out: 4776 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4777 RENEW4res *, resp); 4778 } 4779 4780 /* ARGSUSED */ 4781 static void 4782 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4783 struct compound_state *cs) 4784 { 4785 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4786 4787 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4788 4789 /* No need to check cs->access - we are not accessing any object */ 4790 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4791 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4792 goto out; 4793 } 4794 if (cs->vp != NULL) { 4795 VN_RELE(cs->vp); 4796 } 4797 cs->vp = cs->saved_vp; 4798 cs->saved_vp = NULL; 4799 cs->exi = cs->saved_exi; 4800 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4801 *cs->statusp = resp->status = NFS4_OK; 4802 cs->deleg = FALSE; 4803 4804 out: 4805 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4806 RESTOREFH4res *, resp); 4807 } 4808 4809 /* ARGSUSED */ 4810 static void 4811 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4812 struct compound_state *cs) 4813 { 4814 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4815 4816 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4817 4818 /* No need to check cs->access - we are not accessing any object */ 4819 if (cs->vp == NULL) { 4820 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4821 goto out; 4822 } 4823 if (cs->saved_vp != NULL) { 4824 VN_RELE(cs->saved_vp); 4825 } 4826 cs->saved_vp = cs->vp; 4827 VN_HOLD(cs->saved_vp); 4828 cs->saved_exi = cs->exi; 4829 /* 4830 * since SAVEFH is fairly rare, don't alloc space for its fh 4831 * unless necessary. 4832 */ 4833 if (cs->saved_fh.nfs_fh4_val == NULL) { 4834 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4835 } 4836 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4837 *cs->statusp = resp->status = NFS4_OK; 4838 4839 out: 4840 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4841 SAVEFH4res *, resp); 4842 } 4843 4844 /* 4845 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4846 * return the bitmap of attrs that were set successfully. It is also 4847 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4848 * always be called only after rfs4_do_set_attrs(). 4849 * 4850 * Verify that the attributes are same as the expected ones. sargp->vap 4851 * and sargp->sbp contain the input attributes as translated from fattr4. 4852 * 4853 * This function verifies only the attrs that correspond to a vattr or 4854 * vfsstat struct. That is because of the extra step needed to get the 4855 * corresponding system structs. Other attributes have already been set or 4856 * verified by do_rfs4_set_attrs. 4857 * 4858 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4859 */ 4860 static int 4861 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4862 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4863 { 4864 int error, ret_error = 0; 4865 int i, k; 4866 uint_t sva_mask = sargp->vap->va_mask; 4867 uint_t vbit; 4868 union nfs4_attr_u *na; 4869 uint8_t *amap; 4870 bool_t getsb = ntovp->vfsstat; 4871 4872 if (sva_mask != 0) { 4873 /* 4874 * Okay to overwrite sargp->vap because we verify based 4875 * on the incoming values. 4876 */ 4877 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4878 sargp->cs->cr, NULL); 4879 if (ret_error) { 4880 if (resp == NULL) 4881 return (ret_error); 4882 /* 4883 * Must return bitmap of successful attrs 4884 */ 4885 sva_mask = 0; /* to prevent checking vap later */ 4886 } else { 4887 /* 4888 * Some file systems clobber va_mask. it is probably 4889 * wrong of them to do so, nonethless we practice 4890 * defensive coding. 4891 * See bug id 4276830. 4892 */ 4893 sargp->vap->va_mask = sva_mask; 4894 } 4895 } 4896 4897 if (getsb) { 4898 /* 4899 * Now get the superblock and loop on the bitmap, as there is 4900 * no simple way of translating from superblock to bitmap4. 4901 */ 4902 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4903 if (ret_error) { 4904 if (resp == NULL) 4905 goto errout; 4906 getsb = FALSE; 4907 } 4908 } 4909 4910 /* 4911 * Now loop and verify each attribute which getattr returned 4912 * whether it's the same as the input. 4913 */ 4914 if (resp == NULL && !getsb && (sva_mask == 0)) 4915 goto errout; 4916 4917 na = ntovp->na; 4918 amap = ntovp->amap; 4919 k = 0; 4920 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4921 k = *amap; 4922 ASSERT(nfs4_ntov_map[k].nval == k); 4923 vbit = nfs4_ntov_map[k].vbit; 4924 4925 /* 4926 * If vattr attribute but VOP_GETATTR failed, or it's 4927 * superblock attribute but VFS_STATVFS failed, skip 4928 */ 4929 if (vbit) { 4930 if ((vbit & sva_mask) == 0) 4931 continue; 4932 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4933 continue; 4934 } 4935 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4936 if (resp != NULL) { 4937 if (error) 4938 ret_error = -1; /* not all match */ 4939 else /* update response bitmap */ 4940 *resp |= nfs4_ntov_map[k].fbit; 4941 continue; 4942 } 4943 if (error) { 4944 ret_error = -1; /* not all match */ 4945 break; 4946 } 4947 } 4948 errout: 4949 return (ret_error); 4950 } 4951 4952 /* 4953 * Decode the attribute to be set/verified. If the attr requires a sys op 4954 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4955 * call the sv_getit function for it, because the sys op hasn't yet been done. 4956 * Return 0 for success, error code if failed. 4957 * 4958 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4959 */ 4960 static int 4961 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4962 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4963 { 4964 int error = 0; 4965 bool_t set_later; 4966 4967 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4968 4969 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4970 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4971 /* 4972 * don't verify yet if a vattr or sb dependent attr, 4973 * because we don't have their sys values yet. 4974 * Will be done later. 4975 */ 4976 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4977 /* 4978 * ACLs are a special case, since setting the MODE 4979 * conflicts with setting the ACL. We delay setting 4980 * the ACL until all other attributes have been set. 4981 * The ACL gets set in do_rfs4_op_setattr(). 4982 */ 4983 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4984 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4985 sargp, nap); 4986 if (error) { 4987 xdr_free(nfs4_ntov_map[k].xfunc, 4988 (caddr_t)nap); 4989 } 4990 } 4991 } 4992 } else { 4993 #ifdef DEBUG 4994 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4995 "decoding attribute %d\n", k); 4996 #endif 4997 error = EINVAL; 4998 } 4999 if (!error && resp_bval && !set_later) { 5000 *resp_bval |= nfs4_ntov_map[k].fbit; 5001 } 5002 5003 return (error); 5004 } 5005 5006 /* 5007 * Set vattr based on incoming fattr4 attrs - used by setattr. 5008 * Set response mask. Ignore any values that are not writable vattr attrs. 5009 */ 5010 static nfsstat4 5011 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5012 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5013 nfs4_attr_cmd_t cmd) 5014 { 5015 int error = 0; 5016 int i; 5017 char *attrs = fattrp->attrlist4; 5018 uint32_t attrslen = fattrp->attrlist4_len; 5019 XDR xdr; 5020 nfsstat4 status = NFS4_OK; 5021 vnode_t *vp = cs->vp; 5022 union nfs4_attr_u *na; 5023 uint8_t *amap; 5024 5025 #ifndef lint 5026 /* 5027 * Make sure that maximum attribute number can be expressed as an 5028 * 8 bit quantity. 5029 */ 5030 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5031 #endif 5032 5033 if (vp == NULL) { 5034 if (resp) 5035 *resp = 0; 5036 return (NFS4ERR_NOFILEHANDLE); 5037 } 5038 if (cs->access == CS_ACCESS_DENIED) { 5039 if (resp) 5040 *resp = 0; 5041 return (NFS4ERR_ACCESS); 5042 } 5043 5044 sargp->op = cmd; 5045 sargp->cs = cs; 5046 sargp->flag = 0; /* may be set later */ 5047 sargp->vap->va_mask = 0; 5048 sargp->rdattr_error = NFS4_OK; 5049 sargp->rdattr_error_req = FALSE; 5050 /* sargp->sbp is set by the caller */ 5051 5052 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5053 5054 na = ntovp->na; 5055 amap = ntovp->amap; 5056 5057 /* 5058 * The following loop iterates on the nfs4_ntov_map checking 5059 * if the fbit is set in the requested bitmap. 5060 * If set then we process the arguments using the 5061 * rfs4_fattr4 conversion functions to populate the setattr 5062 * vattr and va_mask. Any settable attrs that are not using vattr 5063 * will be set in this loop. 5064 */ 5065 for (i = 0; i < nfs4_ntov_map_size; i++) { 5066 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5067 continue; 5068 } 5069 /* 5070 * If setattr, must be a writable attr. 5071 * If verify/nverify, must be a readable attr. 5072 */ 5073 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5074 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5075 /* 5076 * Client tries to set/verify an 5077 * unsupported attribute, tries to set 5078 * a read only attr or verify a write 5079 * only one - error! 5080 */ 5081 break; 5082 } 5083 /* 5084 * Decode the attribute to set/verify 5085 */ 5086 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5087 &xdr, resp ? resp : NULL, na); 5088 if (error) 5089 break; 5090 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5091 na++; 5092 (ntovp->attrcnt)++; 5093 if (nfs4_ntov_map[i].vfsstat) 5094 ntovp->vfsstat = TRUE; 5095 } 5096 5097 if (error != 0) 5098 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5099 puterrno4(error)); 5100 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5101 return (status); 5102 } 5103 5104 static nfsstat4 5105 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5106 stateid4 *stateid) 5107 { 5108 int error = 0; 5109 struct nfs4_svgetit_arg sarg; 5110 bool_t trunc; 5111 5112 nfsstat4 status = NFS4_OK; 5113 cred_t *cr = cs->cr; 5114 vnode_t *vp = cs->vp; 5115 struct nfs4_ntov_table ntov; 5116 struct statvfs64 sb; 5117 struct vattr bva; 5118 struct flock64 bf; 5119 int in_crit = 0; 5120 uint_t saved_mask = 0; 5121 caller_context_t ct; 5122 5123 *resp = 0; 5124 sarg.sbp = &sb; 5125 sarg.is_referral = B_FALSE; 5126 nfs4_ntov_table_init(&ntov); 5127 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5128 NFS4ATTR_SETIT); 5129 if (status != NFS4_OK) { 5130 /* 5131 * failed set attrs 5132 */ 5133 goto done; 5134 } 5135 if ((sarg.vap->va_mask == 0) && 5136 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5137 /* 5138 * no further work to be done 5139 */ 5140 goto done; 5141 } 5142 5143 /* 5144 * If we got a request to set the ACL and the MODE, only 5145 * allow changing VSUID, VSGID, and VSVTX. Attempting 5146 * to change any other bits, along with setting an ACL, 5147 * gives NFS4ERR_INVAL. 5148 */ 5149 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5150 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5151 vattr_t va; 5152 5153 va.va_mask = AT_MODE; 5154 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5155 if (error) { 5156 status = puterrno4(error); 5157 goto done; 5158 } 5159 if ((sarg.vap->va_mode ^ va.va_mode) & 5160 ~(VSUID | VSGID | VSVTX)) { 5161 status = NFS4ERR_INVAL; 5162 goto done; 5163 } 5164 } 5165 5166 /* Check stateid only if size has been set */ 5167 if (sarg.vap->va_mask & AT_SIZE) { 5168 trunc = (sarg.vap->va_size == 0); 5169 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5170 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5171 if (status != NFS4_OK) 5172 goto done; 5173 } else { 5174 ct.cc_sysid = 0; 5175 ct.cc_pid = 0; 5176 ct.cc_caller_id = nfs4_srv_caller_id; 5177 ct.cc_flags = CC_DONTBLOCK; 5178 } 5179 5180 /* XXX start of possible race with delegations */ 5181 5182 /* 5183 * We need to specially handle size changes because it is 5184 * possible for the client to create a file with read-only 5185 * modes, but with the file opened for writing. If the client 5186 * then tries to set the file size, e.g. ftruncate(3C), 5187 * fcntl(F_FREESP), the normal access checking done in 5188 * VOP_SETATTR would prevent the client from doing it even though 5189 * it should be allowed to do so. To get around this, we do the 5190 * access checking for ourselves and use VOP_SPACE which doesn't 5191 * do the access checking. 5192 * Also the client should not be allowed to change the file 5193 * size if there is a conflicting non-blocking mandatory lock in 5194 * the region of the change. 5195 */ 5196 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5197 u_offset_t offset; 5198 ssize_t length; 5199 5200 /* 5201 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5202 * before returning, sarg.vap->va_mask is used to 5203 * generate the setattr reply bitmap. We also clear 5204 * AT_SIZE below before calling VOP_SPACE. For both 5205 * of these cases, the va_mask needs to be saved here 5206 * and restored after calling VOP_SETATTR. 5207 */ 5208 saved_mask = sarg.vap->va_mask; 5209 5210 /* 5211 * Check any possible conflict due to NBMAND locks. 5212 * Get into critical region before VOP_GETATTR, so the 5213 * size attribute is valid when checking conflicts. 5214 */ 5215 if (nbl_need_check(vp)) { 5216 nbl_start_crit(vp, RW_READER); 5217 in_crit = 1; 5218 } 5219 5220 bva.va_mask = AT_UID|AT_SIZE; 5221 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5222 status = puterrno4(error); 5223 goto done; 5224 } 5225 5226 if (in_crit) { 5227 if (sarg.vap->va_size < bva.va_size) { 5228 offset = sarg.vap->va_size; 5229 length = bva.va_size - sarg.vap->va_size; 5230 } else { 5231 offset = bva.va_size; 5232 length = sarg.vap->va_size - bva.va_size; 5233 } 5234 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5235 &ct)) { 5236 status = NFS4ERR_LOCKED; 5237 goto done; 5238 } 5239 } 5240 5241 if (crgetuid(cr) == bva.va_uid) { 5242 sarg.vap->va_mask &= ~AT_SIZE; 5243 bf.l_type = F_WRLCK; 5244 bf.l_whence = 0; 5245 bf.l_start = (off64_t)sarg.vap->va_size; 5246 bf.l_len = 0; 5247 bf.l_sysid = 0; 5248 bf.l_pid = 0; 5249 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5250 (offset_t)sarg.vap->va_size, cr, &ct); 5251 } 5252 } 5253 5254 if (!error && sarg.vap->va_mask != 0) 5255 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5256 5257 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5258 if (saved_mask & AT_SIZE) 5259 sarg.vap->va_mask |= AT_SIZE; 5260 5261 /* 5262 * If an ACL was being set, it has been delayed until now, 5263 * in order to set the mode (via the VOP_SETATTR() above) first. 5264 */ 5265 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5266 int i; 5267 5268 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5269 if (ntov.amap[i] == FATTR4_ACL) 5270 break; 5271 if (i < NFS4_MAXNUM_ATTRS) { 5272 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5273 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5274 if (error == 0) { 5275 *resp |= FATTR4_ACL_MASK; 5276 } else if (error == ENOTSUP) { 5277 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5278 status = NFS4ERR_ATTRNOTSUPP; 5279 goto done; 5280 } 5281 } else { 5282 NFS4_DEBUG(rfs4_debug, 5283 (CE_NOTE, "do_rfs4_op_setattr: " 5284 "unable to find ACL in fattr4")); 5285 error = EINVAL; 5286 } 5287 } 5288 5289 if (error) { 5290 /* check if a monitor detected a delegation conflict */ 5291 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5292 status = NFS4ERR_DELAY; 5293 else 5294 status = puterrno4(error); 5295 5296 /* 5297 * Set the response bitmap when setattr failed. 5298 * If VOP_SETATTR partially succeeded, test by doing a 5299 * VOP_GETATTR on the object and comparing the data 5300 * to the setattr arguments. 5301 */ 5302 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5303 } else { 5304 /* 5305 * Force modified metadata out to stable storage. 5306 */ 5307 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5308 /* 5309 * Set response bitmap 5310 */ 5311 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5312 } 5313 5314 /* Return early and already have a NFSv4 error */ 5315 done: 5316 /* 5317 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5318 * conversion sets both readable and writeable NFS4 attrs 5319 * for AT_MTIME and AT_ATIME. The line below masks out 5320 * unrequested attrs from the setattr result bitmap. This 5321 * is placed after the done: label to catch the ATTRNOTSUP 5322 * case. 5323 */ 5324 *resp &= fattrp->attrmask; 5325 5326 if (in_crit) 5327 nbl_end_crit(vp); 5328 5329 nfs4_ntov_table_free(&ntov, &sarg); 5330 5331 return (status); 5332 } 5333 5334 /* ARGSUSED */ 5335 static void 5336 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5337 struct compound_state *cs) 5338 { 5339 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5340 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5341 bslabel_t *clabel; 5342 5343 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5344 SETATTR4args *, args); 5345 5346 if (cs->vp == NULL) { 5347 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5348 goto out; 5349 } 5350 5351 /* 5352 * If there is an unshared filesystem mounted on this vnode, 5353 * do not allow to setattr on this vnode. 5354 */ 5355 if (vn_ismntpt(cs->vp)) { 5356 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5357 goto out; 5358 } 5359 5360 resp->attrsset = 0; 5361 5362 if (rdonly4(cs->exi, cs->vp, req)) { 5363 *cs->statusp = resp->status = NFS4ERR_ROFS; 5364 goto out; 5365 } 5366 5367 /* check label before setting attributes */ 5368 if (is_system_labeled()) { 5369 ASSERT(req->rq_label != NULL); 5370 clabel = req->rq_label; 5371 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5372 "got client label from request(1)", 5373 struct svc_req *, req); 5374 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5375 if (!do_rfs_label_check(clabel, cs->vp, 5376 EQUALITY_CHECK, cs->exi)) { 5377 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5378 goto out; 5379 } 5380 } 5381 } 5382 5383 *cs->statusp = resp->status = 5384 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5385 &args->stateid); 5386 5387 out: 5388 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5389 SETATTR4res *, resp); 5390 } 5391 5392 /* ARGSUSED */ 5393 static void 5394 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5395 struct compound_state *cs) 5396 { 5397 /* 5398 * verify and nverify are exactly the same, except that nverify 5399 * succeeds when some argument changed, and verify succeeds when 5400 * when none changed. 5401 */ 5402 5403 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5404 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5405 5406 int error; 5407 struct nfs4_svgetit_arg sarg; 5408 struct statvfs64 sb; 5409 struct nfs4_ntov_table ntov; 5410 5411 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5412 VERIFY4args *, args); 5413 5414 if (cs->vp == NULL) { 5415 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5416 goto out; 5417 } 5418 5419 sarg.sbp = &sb; 5420 sarg.is_referral = B_FALSE; 5421 nfs4_ntov_table_init(&ntov); 5422 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5423 &sarg, &ntov, NFS4ATTR_VERIT); 5424 if (resp->status != NFS4_OK) { 5425 /* 5426 * do_rfs4_set_attrs will try to verify systemwide attrs, 5427 * so could return -1 for "no match". 5428 */ 5429 if (resp->status == -1) 5430 resp->status = NFS4ERR_NOT_SAME; 5431 goto done; 5432 } 5433 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5434 switch (error) { 5435 case 0: 5436 resp->status = NFS4_OK; 5437 break; 5438 case -1: 5439 resp->status = NFS4ERR_NOT_SAME; 5440 break; 5441 default: 5442 resp->status = puterrno4(error); 5443 break; 5444 } 5445 done: 5446 *cs->statusp = resp->status; 5447 nfs4_ntov_table_free(&ntov, &sarg); 5448 out: 5449 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5450 VERIFY4res *, resp); 5451 } 5452 5453 /* ARGSUSED */ 5454 static void 5455 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5456 struct compound_state *cs) 5457 { 5458 /* 5459 * verify and nverify are exactly the same, except that nverify 5460 * succeeds when some argument changed, and verify succeeds when 5461 * when none changed. 5462 */ 5463 5464 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5465 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5466 5467 int error; 5468 struct nfs4_svgetit_arg sarg; 5469 struct statvfs64 sb; 5470 struct nfs4_ntov_table ntov; 5471 5472 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5473 NVERIFY4args *, args); 5474 5475 if (cs->vp == NULL) { 5476 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5477 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5478 NVERIFY4res *, resp); 5479 return; 5480 } 5481 sarg.sbp = &sb; 5482 sarg.is_referral = B_FALSE; 5483 nfs4_ntov_table_init(&ntov); 5484 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5485 &sarg, &ntov, NFS4ATTR_VERIT); 5486 if (resp->status != NFS4_OK) { 5487 /* 5488 * do_rfs4_set_attrs will try to verify systemwide attrs, 5489 * so could return -1 for "no match". 5490 */ 5491 if (resp->status == -1) 5492 resp->status = NFS4_OK; 5493 goto done; 5494 } 5495 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5496 switch (error) { 5497 case 0: 5498 resp->status = NFS4ERR_SAME; 5499 break; 5500 case -1: 5501 resp->status = NFS4_OK; 5502 break; 5503 default: 5504 resp->status = puterrno4(error); 5505 break; 5506 } 5507 done: 5508 *cs->statusp = resp->status; 5509 nfs4_ntov_table_free(&ntov, &sarg); 5510 5511 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5512 NVERIFY4res *, resp); 5513 } 5514 5515 /* 5516 * XXX - This should live in an NFS header file. 5517 */ 5518 #define MAX_IOVECS 12 5519 5520 /* ARGSUSED */ 5521 static void 5522 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5523 struct compound_state *cs) 5524 { 5525 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5526 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5527 int error; 5528 vnode_t *vp; 5529 struct vattr bva; 5530 u_offset_t rlimit; 5531 struct uio uio; 5532 struct iovec iov[MAX_IOVECS]; 5533 struct iovec *iovp; 5534 int iovcnt; 5535 int ioflag; 5536 cred_t *savecred, *cr; 5537 bool_t *deleg = &cs->deleg; 5538 nfsstat4 stat; 5539 int in_crit = 0; 5540 caller_context_t ct; 5541 5542 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5543 WRITE4args *, args); 5544 5545 vp = cs->vp; 5546 if (vp == NULL) { 5547 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5548 goto out; 5549 } 5550 if (cs->access == CS_ACCESS_DENIED) { 5551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5552 goto out; 5553 } 5554 5555 cr = cs->cr; 5556 5557 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5558 deleg, TRUE, &ct)) != NFS4_OK) { 5559 *cs->statusp = resp->status = stat; 5560 goto out; 5561 } 5562 5563 /* 5564 * We have to enter the critical region before calling VOP_RWLOCK 5565 * to avoid a deadlock with ufs. 5566 */ 5567 if (nbl_need_check(vp)) { 5568 nbl_start_crit(vp, RW_READER); 5569 in_crit = 1; 5570 if (nbl_conflict(vp, NBL_WRITE, 5571 args->offset, args->data_len, 0, &ct)) { 5572 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5573 goto out; 5574 } 5575 } 5576 5577 bva.va_mask = AT_MODE | AT_UID; 5578 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5579 5580 /* 5581 * If we can't get the attributes, then we can't do the 5582 * right access checking. So, we'll fail the request. 5583 */ 5584 if (error) { 5585 *cs->statusp = resp->status = puterrno4(error); 5586 goto out; 5587 } 5588 5589 if (rdonly4(cs->exi, cs->vp, req)) { 5590 *cs->statusp = resp->status = NFS4ERR_ROFS; 5591 goto out; 5592 } 5593 5594 if (vp->v_type != VREG) { 5595 *cs->statusp = resp->status = 5596 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5597 goto out; 5598 } 5599 5600 if (crgetuid(cr) != bva.va_uid && 5601 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5602 *cs->statusp = resp->status = puterrno4(error); 5603 goto out; 5604 } 5605 5606 if (MANDLOCK(vp, bva.va_mode)) { 5607 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5608 goto out; 5609 } 5610 5611 if (args->data_len == 0) { 5612 *cs->statusp = resp->status = NFS4_OK; 5613 resp->count = 0; 5614 resp->committed = args->stable; 5615 resp->writeverf = Write4verf; 5616 goto out; 5617 } 5618 5619 if (args->mblk != NULL) { 5620 mblk_t *m; 5621 uint_t bytes, round_len; 5622 5623 iovcnt = 0; 5624 bytes = 0; 5625 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5626 for (m = args->mblk; 5627 m != NULL && bytes < round_len; 5628 m = m->b_cont) { 5629 iovcnt++; 5630 bytes += MBLKL(m); 5631 } 5632 #ifdef DEBUG 5633 /* should have ended on an mblk boundary */ 5634 if (bytes != round_len) { 5635 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5636 bytes, round_len, args->data_len); 5637 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5638 (void *)args->mblk, (void *)m); 5639 ASSERT(bytes == round_len); 5640 } 5641 #endif 5642 if (iovcnt <= MAX_IOVECS) { 5643 iovp = iov; 5644 } else { 5645 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5646 } 5647 mblk_to_iov(args->mblk, iovcnt, iovp); 5648 } else if (args->rlist != NULL) { 5649 iovcnt = 1; 5650 iovp = iov; 5651 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5652 iovp->iov_len = args->data_len; 5653 } else { 5654 iovcnt = 1; 5655 iovp = iov; 5656 iovp->iov_base = args->data_val; 5657 iovp->iov_len = args->data_len; 5658 } 5659 5660 uio.uio_iov = iovp; 5661 uio.uio_iovcnt = iovcnt; 5662 5663 uio.uio_segflg = UIO_SYSSPACE; 5664 uio.uio_extflg = UIO_COPY_DEFAULT; 5665 uio.uio_loffset = args->offset; 5666 uio.uio_resid = args->data_len; 5667 uio.uio_llimit = curproc->p_fsz_ctl; 5668 rlimit = uio.uio_llimit - args->offset; 5669 if (rlimit < (u_offset_t)uio.uio_resid) 5670 uio.uio_resid = (int)rlimit; 5671 5672 if (args->stable == UNSTABLE4) 5673 ioflag = 0; 5674 else if (args->stable == FILE_SYNC4) 5675 ioflag = FSYNC; 5676 else if (args->stable == DATA_SYNC4) 5677 ioflag = FDSYNC; 5678 else { 5679 if (iovp != iov) 5680 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5681 *cs->statusp = resp->status = NFS4ERR_INVAL; 5682 goto out; 5683 } 5684 5685 /* 5686 * We're changing creds because VM may fault and we need 5687 * the cred of the current thread to be used if quota 5688 * checking is enabled. 5689 */ 5690 savecred = curthread->t_cred; 5691 curthread->t_cred = cr; 5692 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5693 curthread->t_cred = savecred; 5694 5695 if (iovp != iov) 5696 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5697 5698 if (error) { 5699 *cs->statusp = resp->status = puterrno4(error); 5700 goto out; 5701 } 5702 5703 *cs->statusp = resp->status = NFS4_OK; 5704 resp->count = args->data_len - uio.uio_resid; 5705 5706 if (ioflag == 0) 5707 resp->committed = UNSTABLE4; 5708 else 5709 resp->committed = FILE_SYNC4; 5710 5711 resp->writeverf = Write4verf; 5712 5713 out: 5714 if (in_crit) 5715 nbl_end_crit(vp); 5716 5717 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5718 WRITE4res *, resp); 5719 } 5720 5721 5722 /* XXX put in a header file */ 5723 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5724 5725 void 5726 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5727 struct svc_req *req, cred_t *cr, int *rv) 5728 { 5729 uint_t i; 5730 struct compound_state cs; 5731 5732 if (rv != NULL) 5733 *rv = 0; 5734 rfs4_init_compound_state(&cs); 5735 /* 5736 * Form a reply tag by copying over the reqeuest tag. 5737 */ 5738 resp->tag.utf8string_val = 5739 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5740 resp->tag.utf8string_len = args->tag.utf8string_len; 5741 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5742 resp->tag.utf8string_len); 5743 5744 cs.statusp = &resp->status; 5745 cs.req = req; 5746 5747 /* 5748 * XXX for now, minorversion should be zero 5749 */ 5750 if (args->minorversion != NFS4_MINORVERSION) { 5751 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5752 &cs, COMPOUND4args *, args); 5753 resp->array_len = 0; 5754 resp->array = NULL; 5755 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5756 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5757 &cs, COMPOUND4res *, resp); 5758 return; 5759 } 5760 5761 ASSERT(exi == NULL); 5762 ASSERT(cr == NULL); 5763 5764 cr = crget(); 5765 ASSERT(cr != NULL); 5766 5767 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5768 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5769 &cs, COMPOUND4args *, args); 5770 crfree(cr); 5771 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5772 &cs, COMPOUND4res *, resp); 5773 svcerr_badcred(req->rq_xprt); 5774 if (rv != NULL) 5775 *rv = 1; 5776 return; 5777 } 5778 resp->array_len = args->array_len; 5779 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5780 KM_SLEEP); 5781 5782 cs.basecr = cr; 5783 5784 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5785 COMPOUND4args *, args); 5786 5787 /* 5788 * For now, NFS4 compound processing must be protected by 5789 * exported_lock because it can access more than one exportinfo 5790 * per compound and share/unshare can now change multiple 5791 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5792 * per proc (excluding public exinfo), and exi_count design 5793 * is sufficient to protect concurrent execution of NFS2/3 5794 * ops along with unexport. This lock will be removed as 5795 * part of the NFSv4 phase 2 namespace redesign work. 5796 */ 5797 rw_enter(&exported_lock, RW_READER); 5798 5799 /* 5800 * If this is the first compound we've seen, we need to start all 5801 * new instances' grace periods. 5802 */ 5803 if (rfs4_seen_first_compound == 0) { 5804 rfs4_grace_start_new(); 5805 /* 5806 * This must be set after rfs4_grace_start_new(), otherwise 5807 * another thread could proceed past here before the former 5808 * is finished. 5809 */ 5810 rfs4_seen_first_compound = 1; 5811 } 5812 5813 for (i = 0; i < args->array_len && cs.cont; i++) { 5814 nfs_argop4 *argop; 5815 nfs_resop4 *resop; 5816 uint_t op; 5817 5818 argop = &args->array[i]; 5819 resop = &resp->array[i]; 5820 resop->resop = argop->argop; 5821 op = (uint_t)resop->resop; 5822 5823 if (op < rfsv4disp_cnt) { 5824 /* 5825 * Count the individual ops here; NULL and COMPOUND 5826 * are counted in common_dispatch() 5827 */ 5828 rfsproccnt_v4_ptr[op].value.ui64++; 5829 5830 NFS4_DEBUG(rfs4_debug > 1, 5831 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5832 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5833 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5834 rfs4_op_string[op], *cs.statusp)); 5835 if (*cs.statusp != NFS4_OK) 5836 cs.cont = FALSE; 5837 } else { 5838 /* 5839 * This is effectively dead code since XDR code 5840 * will have already returned BADXDR if op doesn't 5841 * decode to legal value. This only done for a 5842 * day when XDR code doesn't verify v4 opcodes. 5843 */ 5844 op = OP_ILLEGAL; 5845 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5846 5847 rfs4_op_illegal(argop, resop, req, &cs); 5848 cs.cont = FALSE; 5849 } 5850 5851 /* 5852 * If not at last op, and if we are to stop, then 5853 * compact the results array. 5854 */ 5855 if ((i + 1) < args->array_len && !cs.cont) { 5856 nfs_resop4 *new_res = kmem_alloc( 5857 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5858 bcopy(resp->array, 5859 new_res, (i+1) * sizeof (nfs_resop4)); 5860 kmem_free(resp->array, 5861 args->array_len * sizeof (nfs_resop4)); 5862 5863 resp->array_len = i + 1; 5864 resp->array = new_res; 5865 } 5866 } 5867 5868 rw_exit(&exported_lock); 5869 5870 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5871 COMPOUND4res *, resp); 5872 5873 if (cs.vp) 5874 VN_RELE(cs.vp); 5875 if (cs.saved_vp) 5876 VN_RELE(cs.saved_vp); 5877 if (cs.saved_fh.nfs_fh4_val) 5878 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5879 5880 if (cs.basecr) 5881 crfree(cs.basecr); 5882 if (cs.cr) 5883 crfree(cs.cr); 5884 /* 5885 * done with this compound request, free the label 5886 */ 5887 5888 if (req->rq_label != NULL) { 5889 kmem_free(req->rq_label, sizeof (bslabel_t)); 5890 req->rq_label = NULL; 5891 } 5892 } 5893 5894 /* 5895 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5896 * XXX zero out the tag and array values. Need to investigate why the 5897 * XXX calls occur, but at least prevent the panic for now. 5898 */ 5899 void 5900 rfs4_compound_free(COMPOUND4res *resp) 5901 { 5902 uint_t i; 5903 5904 if (resp->tag.utf8string_val) { 5905 UTF8STRING_FREE(resp->tag) 5906 } 5907 5908 for (i = 0; i < resp->array_len; i++) { 5909 nfs_resop4 *resop; 5910 uint_t op; 5911 5912 resop = &resp->array[i]; 5913 op = (uint_t)resop->resop; 5914 if (op < rfsv4disp_cnt) { 5915 (*rfsv4disptab[op].dis_resfree)(resop); 5916 } 5917 } 5918 if (resp->array != NULL) { 5919 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5920 } 5921 } 5922 5923 /* 5924 * Process the value of the compound request rpc flags, as a bit-AND 5925 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5926 */ 5927 void 5928 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5929 { 5930 int i; 5931 int flag = RPC_ALL; 5932 5933 for (i = 0; flag && i < args->array_len; i++) { 5934 uint_t op; 5935 5936 op = (uint_t)args->array[i].argop; 5937 5938 if (op < rfsv4disp_cnt) 5939 flag &= rfsv4disptab[op].dis_flags; 5940 else 5941 flag = 0; 5942 } 5943 *flagp = flag; 5944 } 5945 5946 nfsstat4 5947 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5948 { 5949 nfsstat4 e; 5950 5951 rfs4_dbe_lock(cp->rc_dbe); 5952 5953 if (cp->rc_sysidt != LM_NOSYSID) { 5954 *sp = cp->rc_sysidt; 5955 e = NFS4_OK; 5956 5957 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5958 *sp = cp->rc_sysidt; 5959 e = NFS4_OK; 5960 5961 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5962 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5963 } else 5964 e = NFS4ERR_DELAY; 5965 5966 rfs4_dbe_unlock(cp->rc_dbe); 5967 return (e); 5968 } 5969 5970 #if defined(DEBUG) && ! defined(lint) 5971 static void lock_print(char *str, int operation, struct flock64 *flk) 5972 { 5973 char *op, *type; 5974 5975 switch (operation) { 5976 case F_GETLK: op = "F_GETLK"; 5977 break; 5978 case F_SETLK: op = "F_SETLK"; 5979 break; 5980 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5981 break; 5982 default: op = "F_UNKNOWN"; 5983 break; 5984 } 5985 switch (flk->l_type) { 5986 case F_UNLCK: type = "F_UNLCK"; 5987 break; 5988 case F_RDLCK: type = "F_RDLCK"; 5989 break; 5990 case F_WRLCK: type = "F_WRLCK"; 5991 break; 5992 default: type = "F_UNKNOWN"; 5993 break; 5994 } 5995 5996 ASSERT(flk->l_whence == 0); 5997 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5998 str, op, type, (longlong_t)flk->l_start, 5999 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6000 } 6001 6002 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6003 #else 6004 #define LOCK_PRINT(d, s, t, f) 6005 #endif 6006 6007 /*ARGSUSED*/ 6008 static bool_t 6009 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6010 { 6011 return (TRUE); 6012 } 6013 6014 /* 6015 * Look up the pathname using the vp in cs as the directory vnode. 6016 * cs->vp will be the vnode for the file on success 6017 */ 6018 6019 static nfsstat4 6020 rfs4_lookup(component4 *component, struct svc_req *req, 6021 struct compound_state *cs) 6022 { 6023 char *nm; 6024 uint32_t len; 6025 nfsstat4 status; 6026 6027 if (cs->vp == NULL) { 6028 return (NFS4ERR_NOFILEHANDLE); 6029 } 6030 if (cs->vp->v_type != VDIR) { 6031 return (NFS4ERR_NOTDIR); 6032 } 6033 6034 if (!utf8_dir_verify(component)) 6035 return (NFS4ERR_INVAL); 6036 6037 nm = utf8_to_fn(component, &len, NULL); 6038 if (nm == NULL) { 6039 return (NFS4ERR_INVAL); 6040 } 6041 6042 if (len > MAXNAMELEN) { 6043 kmem_free(nm, len); 6044 return (NFS4ERR_NAMETOOLONG); 6045 } 6046 6047 status = do_rfs4_op_lookup(nm, len, req, cs); 6048 6049 kmem_free(nm, len); 6050 6051 return (status); 6052 } 6053 6054 static nfsstat4 6055 rfs4_lookupfile(component4 *component, struct svc_req *req, 6056 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6057 { 6058 nfsstat4 status; 6059 vnode_t *dvp = cs->vp; 6060 vattr_t bva, ava, fva; 6061 int error; 6062 6063 /* Get "before" change value */ 6064 bva.va_mask = AT_CTIME|AT_SEQ; 6065 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6066 if (error) 6067 return (puterrno4(error)); 6068 6069 /* rfs4_lookup may VN_RELE directory */ 6070 VN_HOLD(dvp); 6071 6072 status = rfs4_lookup(component, req, cs); 6073 if (status != NFS4_OK) { 6074 VN_RELE(dvp); 6075 return (status); 6076 } 6077 6078 /* 6079 * Get "after" change value, if it fails, simply return the 6080 * before value. 6081 */ 6082 ava.va_mask = AT_CTIME|AT_SEQ; 6083 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6084 ava.va_ctime = bva.va_ctime; 6085 ava.va_seq = 0; 6086 } 6087 VN_RELE(dvp); 6088 6089 /* 6090 * Validate the file is a file 6091 */ 6092 fva.va_mask = AT_TYPE|AT_MODE; 6093 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6094 if (error) 6095 return (puterrno4(error)); 6096 6097 if (fva.va_type != VREG) { 6098 if (fva.va_type == VDIR) 6099 return (NFS4ERR_ISDIR); 6100 if (fva.va_type == VLNK) 6101 return (NFS4ERR_SYMLINK); 6102 return (NFS4ERR_INVAL); 6103 } 6104 6105 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6106 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6107 6108 /* 6109 * It is undefined if VOP_LOOKUP will change va_seq, so 6110 * cinfo.atomic = TRUE only if we have 6111 * non-zero va_seq's, and they have not changed. 6112 */ 6113 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6114 cinfo->atomic = TRUE; 6115 else 6116 cinfo->atomic = FALSE; 6117 6118 /* Check for mandatory locking */ 6119 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6120 return (check_open_access(access, cs, req)); 6121 } 6122 6123 static nfsstat4 6124 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6125 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6126 { 6127 int error; 6128 nfsstat4 status = NFS4_OK; 6129 vattr_t va; 6130 6131 tryagain: 6132 6133 /* 6134 * The file open mode used is VWRITE. If the client needs 6135 * some other semantic, then it should do the access checking 6136 * itself. It would have been nice to have the file open mode 6137 * passed as part of the arguments. 6138 */ 6139 6140 *created = TRUE; 6141 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6142 6143 if (error) { 6144 *created = FALSE; 6145 6146 /* 6147 * If we got something other than file already exists 6148 * then just return this error. Otherwise, we got 6149 * EEXIST. If we were doing a GUARDED create, then 6150 * just return this error. Otherwise, we need to 6151 * make sure that this wasn't a duplicate of an 6152 * exclusive create request. 6153 * 6154 * The assumption is made that a non-exclusive create 6155 * request will never return EEXIST. 6156 */ 6157 6158 if (error != EEXIST || mode == GUARDED4) { 6159 status = puterrno4(error); 6160 return (status); 6161 } 6162 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6163 NULL, NULL, NULL); 6164 6165 if (error) { 6166 /* 6167 * We couldn't find the file that we thought that 6168 * we just created. So, we'll just try creating 6169 * it again. 6170 */ 6171 if (error == ENOENT) 6172 goto tryagain; 6173 6174 status = puterrno4(error); 6175 return (status); 6176 } 6177 6178 if (mode == UNCHECKED4) { 6179 /* existing object must be regular file */ 6180 if ((*vpp)->v_type != VREG) { 6181 if ((*vpp)->v_type == VDIR) 6182 status = NFS4ERR_ISDIR; 6183 else if ((*vpp)->v_type == VLNK) 6184 status = NFS4ERR_SYMLINK; 6185 else 6186 status = NFS4ERR_INVAL; 6187 VN_RELE(*vpp); 6188 return (status); 6189 } 6190 6191 return (NFS4_OK); 6192 } 6193 6194 /* Check for duplicate request */ 6195 ASSERT(mtime != 0); 6196 va.va_mask = AT_MTIME; 6197 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6198 if (!error) { 6199 /* We found the file */ 6200 if (va.va_mtime.tv_sec != mtime->tv_sec || 6201 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6202 /* but its not our creation */ 6203 VN_RELE(*vpp); 6204 return (NFS4ERR_EXIST); 6205 } 6206 *created = TRUE; /* retrans of create == created */ 6207 return (NFS4_OK); 6208 } 6209 VN_RELE(*vpp); 6210 return (NFS4ERR_EXIST); 6211 } 6212 6213 return (NFS4_OK); 6214 } 6215 6216 static nfsstat4 6217 check_open_access(uint32_t access, struct compound_state *cs, 6218 struct svc_req *req) 6219 { 6220 int error; 6221 vnode_t *vp; 6222 bool_t readonly; 6223 cred_t *cr = cs->cr; 6224 6225 /* For now we don't allow mandatory locking as per V2/V3 */ 6226 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6227 return (NFS4ERR_ACCESS); 6228 } 6229 6230 vp = cs->vp; 6231 ASSERT(cr != NULL && vp->v_type == VREG); 6232 6233 /* 6234 * If the file system is exported read only and we are trying 6235 * to open for write, then return NFS4ERR_ROFS 6236 */ 6237 6238 readonly = rdonly4(cs->exi, cs->vp, req); 6239 6240 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6241 return (NFS4ERR_ROFS); 6242 6243 if (access & OPEN4_SHARE_ACCESS_READ) { 6244 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6245 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6246 return (NFS4ERR_ACCESS); 6247 } 6248 } 6249 6250 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6251 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6252 if (error) 6253 return (NFS4ERR_ACCESS); 6254 } 6255 6256 return (NFS4_OK); 6257 } 6258 6259 static nfsstat4 6260 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6261 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6262 { 6263 struct nfs4_svgetit_arg sarg; 6264 struct nfs4_ntov_table ntov; 6265 6266 bool_t ntov_table_init = FALSE; 6267 struct statvfs64 sb; 6268 nfsstat4 status; 6269 vnode_t *vp; 6270 vattr_t bva, ava, iva, cva, *vap; 6271 vnode_t *dvp; 6272 timespec32_t *mtime; 6273 char *nm = NULL; 6274 uint_t buflen; 6275 bool_t created; 6276 bool_t setsize = FALSE; 6277 len_t reqsize; 6278 int error; 6279 bool_t trunc; 6280 caller_context_t ct; 6281 component4 *component; 6282 bslabel_t *clabel; 6283 struct sockaddr *ca; 6284 char *name = NULL; 6285 6286 sarg.sbp = &sb; 6287 sarg.is_referral = B_FALSE; 6288 6289 dvp = cs->vp; 6290 6291 /* Check if the file system is read only */ 6292 if (rdonly4(cs->exi, dvp, req)) 6293 return (NFS4ERR_ROFS); 6294 6295 /* check the label of including directory */ 6296 if (is_system_labeled()) { 6297 ASSERT(req->rq_label != NULL); 6298 clabel = req->rq_label; 6299 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6300 "got client label from request(1)", 6301 struct svc_req *, req); 6302 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6303 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6304 cs->exi)) { 6305 return (NFS4ERR_ACCESS); 6306 } 6307 } 6308 } 6309 6310 /* 6311 * Get the last component of path name in nm. cs will reference 6312 * the including directory on success. 6313 */ 6314 component = &args->open_claim4_u.file; 6315 if (!utf8_dir_verify(component)) 6316 return (NFS4ERR_INVAL); 6317 6318 nm = utf8_to_fn(component, &buflen, NULL); 6319 6320 if (nm == NULL) 6321 return (NFS4ERR_RESOURCE); 6322 6323 if (buflen > MAXNAMELEN) { 6324 kmem_free(nm, buflen); 6325 return (NFS4ERR_NAMETOOLONG); 6326 } 6327 6328 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6329 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6330 if (error) { 6331 kmem_free(nm, buflen); 6332 return (puterrno4(error)); 6333 } 6334 6335 if (bva.va_type != VDIR) { 6336 kmem_free(nm, buflen); 6337 return (NFS4ERR_NOTDIR); 6338 } 6339 6340 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6341 6342 switch (args->mode) { 6343 case GUARDED4: 6344 /*FALLTHROUGH*/ 6345 case UNCHECKED4: 6346 nfs4_ntov_table_init(&ntov); 6347 ntov_table_init = TRUE; 6348 6349 *attrset = 0; 6350 status = do_rfs4_set_attrs(attrset, 6351 &args->createhow4_u.createattrs, 6352 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6353 6354 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6355 sarg.vap->va_type != VREG) { 6356 if (sarg.vap->va_type == VDIR) 6357 status = NFS4ERR_ISDIR; 6358 else if (sarg.vap->va_type == VLNK) 6359 status = NFS4ERR_SYMLINK; 6360 else 6361 status = NFS4ERR_INVAL; 6362 } 6363 6364 if (status != NFS4_OK) { 6365 kmem_free(nm, buflen); 6366 nfs4_ntov_table_free(&ntov, &sarg); 6367 *attrset = 0; 6368 return (status); 6369 } 6370 6371 vap = sarg.vap; 6372 vap->va_type = VREG; 6373 vap->va_mask |= AT_TYPE; 6374 6375 if ((vap->va_mask & AT_MODE) == 0) { 6376 vap->va_mask |= AT_MODE; 6377 vap->va_mode = (mode_t)0600; 6378 } 6379 6380 if (vap->va_mask & AT_SIZE) { 6381 6382 /* Disallow create with a non-zero size */ 6383 6384 if ((reqsize = sarg.vap->va_size) != 0) { 6385 kmem_free(nm, buflen); 6386 nfs4_ntov_table_free(&ntov, &sarg); 6387 *attrset = 0; 6388 return (NFS4ERR_INVAL); 6389 } 6390 setsize = TRUE; 6391 } 6392 break; 6393 6394 case EXCLUSIVE4: 6395 /* prohibit EXCL create of named attributes */ 6396 if (dvp->v_flag & V_XATTRDIR) { 6397 kmem_free(nm, buflen); 6398 *attrset = 0; 6399 return (NFS4ERR_INVAL); 6400 } 6401 6402 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6403 cva.va_type = VREG; 6404 /* 6405 * Ensure no time overflows. Assumes underlying 6406 * filesystem supports at least 32 bits. 6407 * Truncate nsec to usec resolution to allow valid 6408 * compares even if the underlying filesystem truncates. 6409 */ 6410 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6411 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6412 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6413 cva.va_mode = (mode_t)0; 6414 vap = &cva; 6415 6416 /* 6417 * For EXCL create, attrset is set to the server attr 6418 * used to cache the client's verifier. 6419 */ 6420 *attrset = FATTR4_TIME_MODIFY_MASK; 6421 break; 6422 } 6423 6424 /* If necessary, convert to UTF-8 for illbehaved clients */ 6425 6426 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6427 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6428 MAXPATHLEN + 1); 6429 6430 if (name == NULL) { 6431 kmem_free(nm, buflen); 6432 return (NFS4ERR_SERVERFAULT); 6433 } 6434 6435 status = create_vnode(dvp, name, vap, args->mode, mtime, 6436 cs->cr, &vp, &created); 6437 if (nm != name) 6438 kmem_free(name, MAXPATHLEN + 1); 6439 kmem_free(nm, buflen); 6440 6441 if (status != NFS4_OK) { 6442 if (ntov_table_init) 6443 nfs4_ntov_table_free(&ntov, &sarg); 6444 *attrset = 0; 6445 return (status); 6446 } 6447 6448 trunc = (setsize && !created); 6449 6450 if (args->mode != EXCLUSIVE4) { 6451 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6452 6453 /* 6454 * True verification that object was created with correct 6455 * attrs is impossible. The attrs could have been changed 6456 * immediately after object creation. If attributes did 6457 * not verify, the only recourse for the server is to 6458 * destroy the object. Maybe if some attrs (like gid) 6459 * are set incorrectly, the object should be destroyed; 6460 * however, seems bad as a default policy. Do we really 6461 * want to destroy an object over one of the times not 6462 * verifying correctly? For these reasons, the server 6463 * currently sets bits in attrset for createattrs 6464 * that were set; however, no verification is done. 6465 * 6466 * vmask_to_nmask accounts for vattr bits set on create 6467 * [do_rfs4_set_attrs() only sets resp bits for 6468 * non-vattr/vfs bits.] 6469 * Mask off any bits we set by default so as not to return 6470 * more attrset bits than were requested in createattrs 6471 */ 6472 if (created) { 6473 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6474 *attrset &= createmask; 6475 } else { 6476 /* 6477 * We did not create the vnode (we tried but it 6478 * already existed). In this case, the only createattr 6479 * that the spec allows the server to set is size, 6480 * and even then, it can only be set if it is 0. 6481 */ 6482 *attrset = 0; 6483 if (trunc) 6484 *attrset = FATTR4_SIZE_MASK; 6485 } 6486 } 6487 if (ntov_table_init) 6488 nfs4_ntov_table_free(&ntov, &sarg); 6489 6490 /* 6491 * Get the initial "after" sequence number, if it fails, 6492 * set to zero, time to before. 6493 */ 6494 iva.va_mask = AT_CTIME|AT_SEQ; 6495 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6496 iva.va_seq = 0; 6497 iva.va_ctime = bva.va_ctime; 6498 } 6499 6500 /* 6501 * create_vnode attempts to create the file exclusive, 6502 * if it already exists the VOP_CREATE will fail and 6503 * may not increase va_seq. It is atomic if 6504 * we haven't changed the directory, but if it has changed 6505 * we don't know what changed it. 6506 */ 6507 if (!created) { 6508 if (bva.va_seq && iva.va_seq && 6509 bva.va_seq == iva.va_seq) 6510 cinfo->atomic = TRUE; 6511 else 6512 cinfo->atomic = FALSE; 6513 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6514 } else { 6515 /* 6516 * The entry was created, we need to sync the 6517 * directory metadata. 6518 */ 6519 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6520 6521 /* 6522 * Get "after" change value, if it fails, simply return the 6523 * before value. 6524 */ 6525 ava.va_mask = AT_CTIME|AT_SEQ; 6526 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6527 ava.va_ctime = bva.va_ctime; 6528 ava.va_seq = 0; 6529 } 6530 6531 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6532 6533 /* 6534 * The cinfo->atomic = TRUE only if we have 6535 * non-zero va_seq's, and it has incremented by exactly one 6536 * during the create_vnode and it didn't 6537 * change during the VOP_FSYNC. 6538 */ 6539 if (bva.va_seq && iva.va_seq && ava.va_seq && 6540 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6541 cinfo->atomic = TRUE; 6542 else 6543 cinfo->atomic = FALSE; 6544 } 6545 6546 /* Check for mandatory locking and that the size gets set. */ 6547 cva.va_mask = AT_MODE; 6548 if (setsize) 6549 cva.va_mask |= AT_SIZE; 6550 6551 /* Assume the worst */ 6552 cs->mandlock = TRUE; 6553 6554 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6555 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6556 6557 /* 6558 * Truncate the file if necessary; this would be 6559 * the case for create over an existing file. 6560 */ 6561 6562 if (trunc) { 6563 int in_crit = 0; 6564 rfs4_file_t *fp; 6565 bool_t create = FALSE; 6566 6567 /* 6568 * We are writing over an existing file. 6569 * Check to see if we need to recall a delegation. 6570 */ 6571 rfs4_hold_deleg_policy(); 6572 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6573 if (rfs4_check_delegated_byfp(FWRITE, fp, 6574 (reqsize == 0), FALSE, FALSE, &clientid)) { 6575 rfs4_file_rele(fp); 6576 rfs4_rele_deleg_policy(); 6577 VN_RELE(vp); 6578 *attrset = 0; 6579 return (NFS4ERR_DELAY); 6580 } 6581 rfs4_file_rele(fp); 6582 } 6583 rfs4_rele_deleg_policy(); 6584 6585 if (nbl_need_check(vp)) { 6586 in_crit = 1; 6587 6588 ASSERT(reqsize == 0); 6589 6590 nbl_start_crit(vp, RW_READER); 6591 if (nbl_conflict(vp, NBL_WRITE, 0, 6592 cva.va_size, 0, NULL)) { 6593 in_crit = 0; 6594 nbl_end_crit(vp); 6595 VN_RELE(vp); 6596 *attrset = 0; 6597 return (NFS4ERR_ACCESS); 6598 } 6599 } 6600 ct.cc_sysid = 0; 6601 ct.cc_pid = 0; 6602 ct.cc_caller_id = nfs4_srv_caller_id; 6603 ct.cc_flags = CC_DONTBLOCK; 6604 6605 cva.va_mask = AT_SIZE; 6606 cva.va_size = reqsize; 6607 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6608 if (in_crit) 6609 nbl_end_crit(vp); 6610 } 6611 } 6612 6613 error = makefh4(&cs->fh, vp, cs->exi); 6614 6615 /* 6616 * Force modified data and metadata out to stable storage. 6617 */ 6618 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6619 6620 if (error) { 6621 VN_RELE(vp); 6622 *attrset = 0; 6623 return (puterrno4(error)); 6624 } 6625 6626 /* if parent dir is attrdir, set namedattr fh flag */ 6627 if (dvp->v_flag & V_XATTRDIR) 6628 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6629 6630 if (cs->vp) 6631 VN_RELE(cs->vp); 6632 6633 cs->vp = vp; 6634 6635 /* 6636 * if we did not create the file, we will need to check 6637 * the access bits on the file 6638 */ 6639 6640 if (!created) { 6641 if (setsize) 6642 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6643 status = check_open_access(args->share_access, cs, req); 6644 if (status != NFS4_OK) 6645 *attrset = 0; 6646 } 6647 return (status); 6648 } 6649 6650 /*ARGSUSED*/ 6651 static void 6652 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6653 rfs4_openowner_t *oo, delegreq_t deleg, 6654 uint32_t access, uint32_t deny, 6655 OPEN4res *resp, int deleg_cur) 6656 { 6657 /* XXX Currently not using req */ 6658 rfs4_state_t *sp; 6659 rfs4_file_t *fp; 6660 bool_t screate = TRUE; 6661 bool_t fcreate = TRUE; 6662 uint32_t open_a, share_a; 6663 uint32_t open_d, share_d; 6664 rfs4_deleg_state_t *dsp; 6665 sysid_t sysid; 6666 nfsstat4 status; 6667 caller_context_t ct; 6668 int fflags = 0; 6669 int recall = 0; 6670 int err; 6671 int first_open; 6672 6673 /* get the file struct and hold a lock on it during initial open */ 6674 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6675 if (fp == NULL) { 6676 resp->status = NFS4ERR_RESOURCE; 6677 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6678 return; 6679 } 6680 6681 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6682 if (sp == NULL) { 6683 resp->status = NFS4ERR_RESOURCE; 6684 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6685 /* No need to keep any reference */ 6686 rw_exit(&fp->rf_file_rwlock); 6687 rfs4_file_rele(fp); 6688 return; 6689 } 6690 6691 /* try to get the sysid before continuing */ 6692 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6693 resp->status = status; 6694 rfs4_file_rele(fp); 6695 /* Not a fully formed open; "close" it */ 6696 if (screate == TRUE) 6697 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6698 rfs4_state_rele(sp); 6699 return; 6700 } 6701 6702 /* Calculate the fflags for this OPEN. */ 6703 if (access & OPEN4_SHARE_ACCESS_READ) 6704 fflags |= FREAD; 6705 if (access & OPEN4_SHARE_ACCESS_WRITE) 6706 fflags |= FWRITE; 6707 6708 rfs4_dbe_lock(sp->rs_dbe); 6709 6710 /* 6711 * Calculate the new deny and access mode that this open is adding to 6712 * the file for this open owner; 6713 */ 6714 open_d = (deny & ~sp->rs_open_deny); 6715 open_a = (access & ~sp->rs_open_access); 6716 6717 /* 6718 * Calculate the new share access and share deny modes that this open 6719 * is adding to the file for this open owner; 6720 */ 6721 share_a = (access & ~sp->rs_share_access); 6722 share_d = (deny & ~sp->rs_share_deny); 6723 6724 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6725 6726 /* 6727 * Check to see the client has already sent an open for this 6728 * open owner on this file with the same share/deny modes. 6729 * If so, we don't need to check for a conflict and we don't 6730 * need to add another shrlock. If not, then we need to 6731 * check for conflicts in deny and access before checking for 6732 * conflicts in delegation. We don't want to recall a 6733 * delegation based on an open that will eventually fail based 6734 * on shares modes. 6735 */ 6736 6737 if (share_a || share_d) { 6738 if ((err = rfs4_share(sp, access, deny)) != 0) { 6739 rfs4_dbe_unlock(sp->rs_dbe); 6740 resp->status = err; 6741 6742 rfs4_file_rele(fp); 6743 /* Not a fully formed open; "close" it */ 6744 if (screate == TRUE) 6745 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6746 rfs4_state_rele(sp); 6747 return; 6748 } 6749 } 6750 6751 rfs4_dbe_lock(fp->rf_dbe); 6752 6753 /* 6754 * Check to see if this file is delegated and if so, if a 6755 * recall needs to be done. 6756 */ 6757 if (rfs4_check_recall(sp, access)) { 6758 rfs4_dbe_unlock(fp->rf_dbe); 6759 rfs4_dbe_unlock(sp->rs_dbe); 6760 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6761 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6762 rfs4_dbe_lock(sp->rs_dbe); 6763 6764 /* if state closed while lock was dropped */ 6765 if (sp->rs_closed) { 6766 if (share_a || share_d) 6767 (void) rfs4_unshare(sp); 6768 rfs4_dbe_unlock(sp->rs_dbe); 6769 rfs4_file_rele(fp); 6770 /* Not a fully formed open; "close" it */ 6771 if (screate == TRUE) 6772 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6773 rfs4_state_rele(sp); 6774 resp->status = NFS4ERR_OLD_STATEID; 6775 return; 6776 } 6777 6778 rfs4_dbe_lock(fp->rf_dbe); 6779 /* Let's see if the delegation was returned */ 6780 if (rfs4_check_recall(sp, access)) { 6781 rfs4_dbe_unlock(fp->rf_dbe); 6782 if (share_a || share_d) 6783 (void) rfs4_unshare(sp); 6784 rfs4_dbe_unlock(sp->rs_dbe); 6785 rfs4_file_rele(fp); 6786 rfs4_update_lease(sp->rs_owner->ro_client); 6787 6788 /* Not a fully formed open; "close" it */ 6789 if (screate == TRUE) 6790 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6791 rfs4_state_rele(sp); 6792 resp->status = NFS4ERR_DELAY; 6793 return; 6794 } 6795 } 6796 /* 6797 * the share check passed and any delegation conflict has been 6798 * taken care of, now call vop_open. 6799 * if this is the first open then call vop_open with fflags. 6800 * if not, call vn_open_upgrade with just the upgrade flags. 6801 * 6802 * if the file has been opened already, it will have the current 6803 * access mode in the state struct. if it has no share access, then 6804 * this is a new open. 6805 * 6806 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6807 * call VOP_OPEN(), just do the open upgrade. 6808 */ 6809 if (first_open && !deleg_cur) { 6810 ct.cc_sysid = sysid; 6811 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6812 ct.cc_caller_id = nfs4_srv_caller_id; 6813 ct.cc_flags = CC_DONTBLOCK; 6814 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6815 if (err) { 6816 rfs4_dbe_unlock(fp->rf_dbe); 6817 if (share_a || share_d) 6818 (void) rfs4_unshare(sp); 6819 rfs4_dbe_unlock(sp->rs_dbe); 6820 rfs4_file_rele(fp); 6821 6822 /* Not a fully formed open; "close" it */ 6823 if (screate == TRUE) 6824 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6825 rfs4_state_rele(sp); 6826 /* check if a monitor detected a delegation conflict */ 6827 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6828 resp->status = NFS4ERR_DELAY; 6829 else 6830 resp->status = NFS4ERR_SERVERFAULT; 6831 return; 6832 } 6833 } else { /* open upgrade */ 6834 /* 6835 * calculate the fflags for the new mode that is being added 6836 * by this upgrade. 6837 */ 6838 fflags = 0; 6839 if (open_a & OPEN4_SHARE_ACCESS_READ) 6840 fflags |= FREAD; 6841 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6842 fflags |= FWRITE; 6843 vn_open_upgrade(cs->vp, fflags); 6844 } 6845 sp->rs_open_access |= access; 6846 sp->rs_open_deny |= deny; 6847 6848 if (open_d & OPEN4_SHARE_DENY_READ) 6849 fp->rf_deny_read++; 6850 if (open_d & OPEN4_SHARE_DENY_WRITE) 6851 fp->rf_deny_write++; 6852 fp->rf_share_deny |= deny; 6853 6854 if (open_a & OPEN4_SHARE_ACCESS_READ) 6855 fp->rf_access_read++; 6856 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6857 fp->rf_access_write++; 6858 fp->rf_share_access |= access; 6859 6860 /* 6861 * Check for delegation here. if the deleg argument is not 6862 * DELEG_ANY, then this is a reclaim from a client and 6863 * we must honor the delegation requested. If necessary we can 6864 * set the recall flag. 6865 */ 6866 6867 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6868 6869 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6870 6871 next_stateid(&sp->rs_stateid); 6872 6873 resp->stateid = sp->rs_stateid.stateid; 6874 6875 rfs4_dbe_unlock(fp->rf_dbe); 6876 rfs4_dbe_unlock(sp->rs_dbe); 6877 6878 if (dsp) { 6879 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6880 rfs4_deleg_state_rele(dsp); 6881 } 6882 6883 rfs4_file_rele(fp); 6884 rfs4_state_rele(sp); 6885 6886 resp->status = NFS4_OK; 6887 } 6888 6889 /*ARGSUSED*/ 6890 static void 6891 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6892 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6893 { 6894 change_info4 *cinfo = &resp->cinfo; 6895 bitmap4 *attrset = &resp->attrset; 6896 6897 if (args->opentype == OPEN4_NOCREATE) 6898 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6899 req, cs, args->share_access, cinfo); 6900 else { 6901 /* inhibit delegation grants during exclusive create */ 6902 6903 if (args->mode == EXCLUSIVE4) 6904 rfs4_disable_delegation(); 6905 6906 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6907 oo->ro_client->rc_clientid); 6908 } 6909 6910 if (resp->status == NFS4_OK) { 6911 6912 /* cs->vp cs->fh now reference the desired file */ 6913 6914 rfs4_do_open(cs, req, oo, 6915 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 6916 args->share_access, args->share_deny, resp, 0); 6917 6918 /* 6919 * If rfs4_createfile set attrset, we must 6920 * clear this attrset before the response is copied. 6921 */ 6922 if (resp->status != NFS4_OK && resp->attrset) { 6923 resp->attrset = 0; 6924 } 6925 } 6926 else 6927 *cs->statusp = resp->status; 6928 6929 if (args->mode == EXCLUSIVE4) 6930 rfs4_enable_delegation(); 6931 } 6932 6933 /*ARGSUSED*/ 6934 static void 6935 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6936 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6937 { 6938 change_info4 *cinfo = &resp->cinfo; 6939 vattr_t va; 6940 vtype_t v_type = cs->vp->v_type; 6941 int error = 0; 6942 6943 /* Verify that we have a regular file */ 6944 if (v_type != VREG) { 6945 if (v_type == VDIR) 6946 resp->status = NFS4ERR_ISDIR; 6947 else if (v_type == VLNK) 6948 resp->status = NFS4ERR_SYMLINK; 6949 else 6950 resp->status = NFS4ERR_INVAL; 6951 return; 6952 } 6953 6954 va.va_mask = AT_MODE|AT_UID; 6955 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6956 if (error) { 6957 resp->status = puterrno4(error); 6958 return; 6959 } 6960 6961 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6962 6963 /* 6964 * Check if we have access to the file, Note the the file 6965 * could have originally been open UNCHECKED or GUARDED 6966 * with mode bits that will now fail, but there is nothing 6967 * we can really do about that except in the case that the 6968 * owner of the file is the one requesting the open. 6969 */ 6970 if (crgetuid(cs->cr) != va.va_uid) { 6971 resp->status = check_open_access(args->share_access, cs, req); 6972 if (resp->status != NFS4_OK) { 6973 return; 6974 } 6975 } 6976 6977 /* 6978 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6979 */ 6980 cinfo->before = 0; 6981 cinfo->after = 0; 6982 cinfo->atomic = FALSE; 6983 6984 rfs4_do_open(cs, req, oo, 6985 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6986 args->share_access, args->share_deny, resp, 0); 6987 } 6988 6989 static void 6990 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6991 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6992 { 6993 int error; 6994 nfsstat4 status; 6995 stateid4 stateid = 6996 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6997 rfs4_deleg_state_t *dsp; 6998 6999 /* 7000 * Find the state info from the stateid and confirm that the 7001 * file is delegated. If the state openowner is the same as 7002 * the supplied openowner we're done. If not, get the file 7003 * info from the found state info. Use that file info to 7004 * create the state for this lock owner. Note solaris doen't 7005 * really need the pathname to find the file. We may want to 7006 * lookup the pathname and make sure that the vp exist and 7007 * matches the vp in the file structure. However it is 7008 * possible that the pathname nolonger exists (local process 7009 * unlinks the file), so this may not be that useful. 7010 */ 7011 7012 status = rfs4_get_deleg_state(&stateid, &dsp); 7013 if (status != NFS4_OK) { 7014 resp->status = status; 7015 return; 7016 } 7017 7018 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7019 7020 /* 7021 * New lock owner, create state. Since this was probably called 7022 * in response to a CB_RECALL we set deleg to DELEG_NONE 7023 */ 7024 7025 ASSERT(cs->vp != NULL); 7026 VN_RELE(cs->vp); 7027 VN_HOLD(dsp->rds_finfo->rf_vp); 7028 cs->vp = dsp->rds_finfo->rf_vp; 7029 7030 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7031 rfs4_deleg_state_rele(dsp); 7032 *cs->statusp = resp->status = puterrno4(error); 7033 return; 7034 } 7035 7036 /* Mark progress for delegation returns */ 7037 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7038 rfs4_deleg_state_rele(dsp); 7039 rfs4_do_open(cs, req, oo, DELEG_NONE, 7040 args->share_access, args->share_deny, resp, 1); 7041 } 7042 7043 /*ARGSUSED*/ 7044 static void 7045 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7046 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7047 { 7048 /* 7049 * Lookup the pathname, it must already exist since this file 7050 * was delegated. 7051 * 7052 * Find the file and state info for this vp and open owner pair. 7053 * check that they are in fact delegated. 7054 * check that the state access and deny modes are the same. 7055 * 7056 * Return the delgation possibly seting the recall flag. 7057 */ 7058 rfs4_file_t *fp; 7059 rfs4_state_t *sp; 7060 bool_t create = FALSE; 7061 bool_t dcreate = FALSE; 7062 rfs4_deleg_state_t *dsp; 7063 nfsace4 *ace; 7064 7065 /* Note we ignore oflags */ 7066 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7067 req, cs, args->share_access, &resp->cinfo); 7068 7069 if (resp->status != NFS4_OK) { 7070 return; 7071 } 7072 7073 /* get the file struct and hold a lock on it during initial open */ 7074 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7075 if (fp == NULL) { 7076 resp->status = NFS4ERR_RESOURCE; 7077 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7078 return; 7079 } 7080 7081 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7082 if (sp == NULL) { 7083 resp->status = NFS4ERR_SERVERFAULT; 7084 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7085 rw_exit(&fp->rf_file_rwlock); 7086 rfs4_file_rele(fp); 7087 return; 7088 } 7089 7090 rfs4_dbe_lock(sp->rs_dbe); 7091 rfs4_dbe_lock(fp->rf_dbe); 7092 if (args->share_access != sp->rs_share_access || 7093 args->share_deny != sp->rs_share_deny || 7094 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7095 NFS4_DEBUG(rfs4_debug, 7096 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7097 rfs4_dbe_unlock(fp->rf_dbe); 7098 rfs4_dbe_unlock(sp->rs_dbe); 7099 rfs4_file_rele(fp); 7100 rfs4_state_rele(sp); 7101 resp->status = NFS4ERR_SERVERFAULT; 7102 return; 7103 } 7104 rfs4_dbe_unlock(fp->rf_dbe); 7105 rfs4_dbe_unlock(sp->rs_dbe); 7106 7107 dsp = rfs4_finddeleg(sp, &dcreate); 7108 if (dsp == NULL) { 7109 rfs4_state_rele(sp); 7110 rfs4_file_rele(fp); 7111 resp->status = NFS4ERR_SERVERFAULT; 7112 return; 7113 } 7114 7115 next_stateid(&sp->rs_stateid); 7116 7117 resp->stateid = sp->rs_stateid.stateid; 7118 7119 resp->delegation.delegation_type = dsp->rds_dtype; 7120 7121 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7122 open_read_delegation4 *rv = 7123 &resp->delegation.open_delegation4_u.read; 7124 7125 rv->stateid = dsp->rds_delegid.stateid; 7126 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7127 ace = &rv->permissions; 7128 } else { 7129 open_write_delegation4 *rv = 7130 &resp->delegation.open_delegation4_u.write; 7131 7132 rv->stateid = dsp->rds_delegid.stateid; 7133 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7134 ace = &rv->permissions; 7135 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7136 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7137 } 7138 7139 /* XXX For now */ 7140 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7141 ace->flag = 0; 7142 ace->access_mask = 0; 7143 ace->who.utf8string_len = 0; 7144 ace->who.utf8string_val = 0; 7145 7146 rfs4_deleg_state_rele(dsp); 7147 rfs4_state_rele(sp); 7148 rfs4_file_rele(fp); 7149 } 7150 7151 typedef enum { 7152 NFS4_CHKSEQ_OKAY = 0, 7153 NFS4_CHKSEQ_REPLAY = 1, 7154 NFS4_CHKSEQ_BAD = 2 7155 } rfs4_chkseq_t; 7156 7157 /* 7158 * Generic function for sequence number checks. 7159 */ 7160 static rfs4_chkseq_t 7161 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7162 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7163 { 7164 /* Same sequence ids and matching operations? */ 7165 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7166 if (copyres == TRUE) { 7167 rfs4_free_reply(resop); 7168 rfs4_copy_reply(resop, lastop); 7169 } 7170 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7171 "Replayed SEQID %d\n", seqid)); 7172 return (NFS4_CHKSEQ_REPLAY); 7173 } 7174 7175 /* If the incoming sequence is not the next expected then it is bad */ 7176 if (rqst_seq != seqid + 1) { 7177 if (rqst_seq == seqid) { 7178 NFS4_DEBUG(rfs4_debug, 7179 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7180 "but last op was %d current op is %d\n", 7181 lastop->resop, resop->resop)); 7182 return (NFS4_CHKSEQ_BAD); 7183 } 7184 NFS4_DEBUG(rfs4_debug, 7185 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7186 rqst_seq, seqid)); 7187 return (NFS4_CHKSEQ_BAD); 7188 } 7189 7190 /* Everything okay -- next expected */ 7191 return (NFS4_CHKSEQ_OKAY); 7192 } 7193 7194 7195 static rfs4_chkseq_t 7196 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7197 { 7198 rfs4_chkseq_t rc; 7199 7200 rfs4_dbe_lock(op->ro_dbe); 7201 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7202 TRUE); 7203 rfs4_dbe_unlock(op->ro_dbe); 7204 7205 if (rc == NFS4_CHKSEQ_OKAY) 7206 rfs4_update_lease(op->ro_client); 7207 7208 return (rc); 7209 } 7210 7211 static rfs4_chkseq_t 7212 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7213 { 7214 rfs4_chkseq_t rc; 7215 7216 rfs4_dbe_lock(op->ro_dbe); 7217 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7218 olo_seqid, resop, FALSE); 7219 rfs4_dbe_unlock(op->ro_dbe); 7220 7221 return (rc); 7222 } 7223 7224 static rfs4_chkseq_t 7225 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7226 { 7227 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7228 7229 rfs4_dbe_lock(lsp->rls_dbe); 7230 if (!lsp->rls_skip_seqid_check) 7231 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7232 resop, TRUE); 7233 rfs4_dbe_unlock(lsp->rls_dbe); 7234 7235 return (rc); 7236 } 7237 7238 static void 7239 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7240 struct svc_req *req, struct compound_state *cs) 7241 { 7242 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7243 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7244 open_owner4 *owner = &args->owner; 7245 open_claim_type4 claim = args->claim; 7246 rfs4_client_t *cp; 7247 rfs4_openowner_t *oo; 7248 bool_t create; 7249 bool_t replay = FALSE; 7250 int can_reclaim; 7251 7252 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7253 OPEN4args *, args); 7254 7255 if (cs->vp == NULL) { 7256 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7257 goto end; 7258 } 7259 7260 /* 7261 * Need to check clientid and lease expiration first based on 7262 * error ordering and incrementing sequence id. 7263 */ 7264 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7265 if (cp == NULL) { 7266 *cs->statusp = resp->status = 7267 rfs4_check_clientid(&owner->clientid, 0); 7268 goto end; 7269 } 7270 7271 if (rfs4_lease_expired(cp)) { 7272 rfs4_client_close(cp); 7273 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7274 goto end; 7275 } 7276 can_reclaim = cp->rc_can_reclaim; 7277 7278 /* 7279 * Find the open_owner for use from this point forward. Take 7280 * care in updating the sequence id based on the type of error 7281 * being returned. 7282 */ 7283 retry: 7284 create = TRUE; 7285 oo = rfs4_findopenowner(owner, &create, args->seqid); 7286 if (oo == NULL) { 7287 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7288 rfs4_client_rele(cp); 7289 goto end; 7290 } 7291 7292 /* Hold off access to the sequence space while the open is done */ 7293 rfs4_sw_enter(&oo->ro_sw); 7294 7295 /* 7296 * If the open_owner existed before at the server, then check 7297 * the sequence id. 7298 */ 7299 if (!create && !oo->ro_postpone_confirm) { 7300 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7301 case NFS4_CHKSEQ_BAD: 7302 if ((args->seqid > oo->ro_open_seqid) && 7303 oo->ro_need_confirm) { 7304 rfs4_free_opens(oo, TRUE, FALSE); 7305 rfs4_sw_exit(&oo->ro_sw); 7306 rfs4_openowner_rele(oo); 7307 goto retry; 7308 } 7309 resp->status = NFS4ERR_BAD_SEQID; 7310 goto out; 7311 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7312 replay = TRUE; 7313 goto out; 7314 default: 7315 break; 7316 } 7317 7318 /* 7319 * Sequence was ok and open owner exists 7320 * check to see if we have yet to see an 7321 * open_confirm. 7322 */ 7323 if (oo->ro_need_confirm) { 7324 rfs4_free_opens(oo, TRUE, FALSE); 7325 rfs4_sw_exit(&oo->ro_sw); 7326 rfs4_openowner_rele(oo); 7327 goto retry; 7328 } 7329 } 7330 /* Grace only applies to regular-type OPENs */ 7331 if (rfs4_clnt_in_grace(cp) && 7332 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7333 *cs->statusp = resp->status = NFS4ERR_GRACE; 7334 goto out; 7335 } 7336 7337 /* 7338 * If previous state at the server existed then can_reclaim 7339 * will be set. If not reply NFS4ERR_NO_GRACE to the 7340 * client. 7341 */ 7342 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7343 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7344 goto out; 7345 } 7346 7347 7348 /* 7349 * Reject the open if the client has missed the grace period 7350 */ 7351 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7352 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7353 goto out; 7354 } 7355 7356 /* Couple of up-front bookkeeping items */ 7357 if (oo->ro_need_confirm) { 7358 /* 7359 * If this is a reclaim OPEN then we should not ask 7360 * for a confirmation of the open_owner per the 7361 * protocol specification. 7362 */ 7363 if (claim == CLAIM_PREVIOUS) 7364 oo->ro_need_confirm = FALSE; 7365 else 7366 resp->rflags |= OPEN4_RESULT_CONFIRM; 7367 } 7368 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7369 7370 /* 7371 * If there is an unshared filesystem mounted on this vnode, 7372 * do not allow to open/create in this directory. 7373 */ 7374 if (vn_ismntpt(cs->vp)) { 7375 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7376 goto out; 7377 } 7378 7379 /* 7380 * access must READ, WRITE, or BOTH. No access is invalid. 7381 * deny can be READ, WRITE, BOTH, or NONE. 7382 * bits not defined for access/deny are invalid. 7383 */ 7384 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7385 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7386 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7387 *cs->statusp = resp->status = NFS4ERR_INVAL; 7388 goto out; 7389 } 7390 7391 7392 /* 7393 * make sure attrset is zero before response is built. 7394 */ 7395 resp->attrset = 0; 7396 7397 switch (claim) { 7398 case CLAIM_NULL: 7399 rfs4_do_opennull(cs, req, args, oo, resp); 7400 break; 7401 case CLAIM_PREVIOUS: 7402 rfs4_do_openprev(cs, req, args, oo, resp); 7403 break; 7404 case CLAIM_DELEGATE_CUR: 7405 rfs4_do_opendelcur(cs, req, args, oo, resp); 7406 break; 7407 case CLAIM_DELEGATE_PREV: 7408 rfs4_do_opendelprev(cs, req, args, oo, resp); 7409 break; 7410 default: 7411 resp->status = NFS4ERR_INVAL; 7412 break; 7413 } 7414 7415 out: 7416 rfs4_client_rele(cp); 7417 7418 /* Catch sequence id handling here to make it a little easier */ 7419 switch (resp->status) { 7420 case NFS4ERR_BADXDR: 7421 case NFS4ERR_BAD_SEQID: 7422 case NFS4ERR_BAD_STATEID: 7423 case NFS4ERR_NOFILEHANDLE: 7424 case NFS4ERR_RESOURCE: 7425 case NFS4ERR_STALE_CLIENTID: 7426 case NFS4ERR_STALE_STATEID: 7427 /* 7428 * The protocol states that if any of these errors are 7429 * being returned, the sequence id should not be 7430 * incremented. Any other return requires an 7431 * increment. 7432 */ 7433 break; 7434 default: 7435 /* Always update the lease in this case */ 7436 rfs4_update_lease(oo->ro_client); 7437 7438 /* Regular response - copy the result */ 7439 if (!replay) 7440 rfs4_update_open_resp(oo, resop, &cs->fh); 7441 7442 /* 7443 * REPLAY case: Only if the previous response was OK 7444 * do we copy the filehandle. If not OK, no 7445 * filehandle to copy. 7446 */ 7447 if (replay == TRUE && 7448 resp->status == NFS4_OK && 7449 oo->ro_reply_fh.nfs_fh4_val) { 7450 /* 7451 * If this is a replay, we must restore the 7452 * current filehandle/vp to that of what was 7453 * returned originally. Try our best to do 7454 * it. 7455 */ 7456 nfs_fh4_fmt_t *fh_fmtp = 7457 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7458 7459 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7460 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7461 7462 if (cs->exi == NULL) { 7463 resp->status = NFS4ERR_STALE; 7464 goto finish; 7465 } 7466 7467 VN_RELE(cs->vp); 7468 7469 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7470 &resp->status); 7471 7472 if (cs->vp == NULL) 7473 goto finish; 7474 7475 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7476 } 7477 7478 /* 7479 * If this was a replay, no need to update the 7480 * sequence id. If the open_owner was not created on 7481 * this pass, then update. The first use of an 7482 * open_owner will not bump the sequence id. 7483 */ 7484 if (replay == FALSE && !create) 7485 rfs4_update_open_sequence(oo); 7486 /* 7487 * If the client is receiving an error and the 7488 * open_owner needs to be confirmed, there is no way 7489 * to notify the client of this fact ignoring the fact 7490 * that the server has no method of returning a 7491 * stateid to confirm. Therefore, the server needs to 7492 * mark this open_owner in a way as to avoid the 7493 * sequence id checking the next time the client uses 7494 * this open_owner. 7495 */ 7496 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7497 oo->ro_postpone_confirm = TRUE; 7498 /* 7499 * If OK response then clear the postpone flag and 7500 * reset the sequence id to keep in sync with the 7501 * client. 7502 */ 7503 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7504 oo->ro_postpone_confirm = FALSE; 7505 oo->ro_open_seqid = args->seqid; 7506 } 7507 break; 7508 } 7509 7510 finish: 7511 *cs->statusp = resp->status; 7512 7513 rfs4_sw_exit(&oo->ro_sw); 7514 rfs4_openowner_rele(oo); 7515 7516 end: 7517 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7518 OPEN4res *, resp); 7519 } 7520 7521 /*ARGSUSED*/ 7522 void 7523 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7524 struct svc_req *req, struct compound_state *cs) 7525 { 7526 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7527 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7528 rfs4_state_t *sp; 7529 nfsstat4 status; 7530 7531 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7532 OPEN_CONFIRM4args *, args); 7533 7534 if (cs->vp == NULL) { 7535 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7536 goto out; 7537 } 7538 7539 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7540 if (status != NFS4_OK) { 7541 *cs->statusp = resp->status = status; 7542 goto out; 7543 } 7544 7545 /* Ensure specified filehandle matches */ 7546 if (cs->vp != sp->rs_finfo->rf_vp) { 7547 rfs4_state_rele(sp); 7548 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7549 goto out; 7550 } 7551 7552 /* hold off other access to open_owner while we tinker */ 7553 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7554 7555 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7556 case NFS4_CHECK_STATEID_OKAY: 7557 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7558 resop) != 0) { 7559 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7560 break; 7561 } 7562 /* 7563 * If it is the appropriate stateid and determined to 7564 * be "OKAY" then this means that the stateid does not 7565 * need to be confirmed and the client is in error for 7566 * sending an OPEN_CONFIRM. 7567 */ 7568 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7569 break; 7570 case NFS4_CHECK_STATEID_OLD: 7571 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7572 break; 7573 case NFS4_CHECK_STATEID_BAD: 7574 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7575 break; 7576 case NFS4_CHECK_STATEID_EXPIRED: 7577 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7578 break; 7579 case NFS4_CHECK_STATEID_CLOSED: 7580 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7581 break; 7582 case NFS4_CHECK_STATEID_REPLAY: 7583 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7584 resop)) { 7585 case NFS4_CHKSEQ_OKAY: 7586 /* 7587 * This is replayed stateid; if seqid matches 7588 * next expected, then client is using wrong seqid. 7589 */ 7590 /* fall through */ 7591 case NFS4_CHKSEQ_BAD: 7592 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7593 break; 7594 case NFS4_CHKSEQ_REPLAY: 7595 /* 7596 * Note this case is the duplicate case so 7597 * resp->status is already set. 7598 */ 7599 *cs->statusp = resp->status; 7600 rfs4_update_lease(sp->rs_owner->ro_client); 7601 break; 7602 } 7603 break; 7604 case NFS4_CHECK_STATEID_UNCONFIRMED: 7605 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7606 resop) != NFS4_CHKSEQ_OKAY) { 7607 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7608 break; 7609 } 7610 *cs->statusp = resp->status = NFS4_OK; 7611 7612 next_stateid(&sp->rs_stateid); 7613 resp->open_stateid = sp->rs_stateid.stateid; 7614 sp->rs_owner->ro_need_confirm = FALSE; 7615 rfs4_update_lease(sp->rs_owner->ro_client); 7616 rfs4_update_open_sequence(sp->rs_owner); 7617 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7618 break; 7619 default: 7620 ASSERT(FALSE); 7621 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7622 break; 7623 } 7624 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7625 rfs4_state_rele(sp); 7626 7627 out: 7628 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7629 OPEN_CONFIRM4res *, resp); 7630 } 7631 7632 /*ARGSUSED*/ 7633 void 7634 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7635 struct svc_req *req, struct compound_state *cs) 7636 { 7637 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7638 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7639 uint32_t access = args->share_access; 7640 uint32_t deny = args->share_deny; 7641 nfsstat4 status; 7642 rfs4_state_t *sp; 7643 rfs4_file_t *fp; 7644 int fflags = 0; 7645 7646 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7647 OPEN_DOWNGRADE4args *, args); 7648 7649 if (cs->vp == NULL) { 7650 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7651 goto out; 7652 } 7653 7654 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7655 if (status != NFS4_OK) { 7656 *cs->statusp = resp->status = status; 7657 goto out; 7658 } 7659 7660 /* Ensure specified filehandle matches */ 7661 if (cs->vp != sp->rs_finfo->rf_vp) { 7662 rfs4_state_rele(sp); 7663 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7664 goto out; 7665 } 7666 7667 /* hold off other access to open_owner while we tinker */ 7668 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7669 7670 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7671 case NFS4_CHECK_STATEID_OKAY: 7672 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7673 resop) != NFS4_CHKSEQ_OKAY) { 7674 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7675 goto end; 7676 } 7677 break; 7678 case NFS4_CHECK_STATEID_OLD: 7679 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7680 goto end; 7681 case NFS4_CHECK_STATEID_BAD: 7682 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7683 goto end; 7684 case NFS4_CHECK_STATEID_EXPIRED: 7685 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7686 goto end; 7687 case NFS4_CHECK_STATEID_CLOSED: 7688 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7689 goto end; 7690 case NFS4_CHECK_STATEID_UNCONFIRMED: 7691 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7692 goto end; 7693 case NFS4_CHECK_STATEID_REPLAY: 7694 /* Check the sequence id for the open owner */ 7695 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7696 resop)) { 7697 case NFS4_CHKSEQ_OKAY: 7698 /* 7699 * This is replayed stateid; if seqid matches 7700 * next expected, then client is using wrong seqid. 7701 */ 7702 /* fall through */ 7703 case NFS4_CHKSEQ_BAD: 7704 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7705 goto end; 7706 case NFS4_CHKSEQ_REPLAY: 7707 /* 7708 * Note this case is the duplicate case so 7709 * resp->status is already set. 7710 */ 7711 *cs->statusp = resp->status; 7712 rfs4_update_lease(sp->rs_owner->ro_client); 7713 goto end; 7714 } 7715 break; 7716 default: 7717 ASSERT(FALSE); 7718 break; 7719 } 7720 7721 rfs4_dbe_lock(sp->rs_dbe); 7722 /* 7723 * Check that the new access modes and deny modes are valid. 7724 * Check that no invalid bits are set. 7725 */ 7726 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7727 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7728 *cs->statusp = resp->status = NFS4ERR_INVAL; 7729 rfs4_update_open_sequence(sp->rs_owner); 7730 rfs4_dbe_unlock(sp->rs_dbe); 7731 goto end; 7732 } 7733 7734 /* 7735 * The new modes must be a subset of the current modes and 7736 * the access must specify at least one mode. To test that 7737 * the new mode is a subset of the current modes we bitwise 7738 * AND them together and check that the result equals the new 7739 * mode. For example: 7740 * New mode, access == R and current mode, sp->rs_open_access == RW 7741 * access & sp->rs_open_access == R == access, so the new access mode 7742 * is valid. Consider access == RW, sp->rs_open_access = R 7743 * access & sp->rs_open_access == R != access, so the new access mode 7744 * is invalid. 7745 */ 7746 if ((access & sp->rs_open_access) != access || 7747 (deny & sp->rs_open_deny) != deny || 7748 (access & 7749 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7750 *cs->statusp = resp->status = NFS4ERR_INVAL; 7751 rfs4_update_open_sequence(sp->rs_owner); 7752 rfs4_dbe_unlock(sp->rs_dbe); 7753 goto end; 7754 } 7755 7756 /* 7757 * Release any share locks associated with this stateID. 7758 * Strictly speaking, this violates the spec because the 7759 * spec effectively requires that open downgrade be atomic. 7760 * At present, fs_shrlock does not have this capability. 7761 */ 7762 (void) rfs4_unshare(sp); 7763 7764 status = rfs4_share(sp, access, deny); 7765 if (status != NFS4_OK) { 7766 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7767 rfs4_update_open_sequence(sp->rs_owner); 7768 rfs4_dbe_unlock(sp->rs_dbe); 7769 goto end; 7770 } 7771 7772 fp = sp->rs_finfo; 7773 rfs4_dbe_lock(fp->rf_dbe); 7774 7775 /* 7776 * If the current mode has deny read and the new mode 7777 * does not, decrement the number of deny read mode bits 7778 * and if it goes to zero turn off the deny read bit 7779 * on the file. 7780 */ 7781 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7782 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7783 fp->rf_deny_read--; 7784 if (fp->rf_deny_read == 0) 7785 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7786 } 7787 7788 /* 7789 * If the current mode has deny write and the new mode 7790 * does not, decrement the number of deny write mode bits 7791 * and if it goes to zero turn off the deny write bit 7792 * on the file. 7793 */ 7794 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7795 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7796 fp->rf_deny_write--; 7797 if (fp->rf_deny_write == 0) 7798 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7799 } 7800 7801 /* 7802 * If the current mode has access read and the new mode 7803 * does not, decrement the number of access read mode bits 7804 * and if it goes to zero turn off the access read bit 7805 * on the file. set fflags to FREAD for the call to 7806 * vn_open_downgrade(). 7807 */ 7808 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7809 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7810 fp->rf_access_read--; 7811 if (fp->rf_access_read == 0) 7812 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7813 fflags |= FREAD; 7814 } 7815 7816 /* 7817 * If the current mode has access write and the new mode 7818 * does not, decrement the number of access write mode bits 7819 * and if it goes to zero turn off the access write bit 7820 * on the file. set fflags to FWRITE for the call to 7821 * vn_open_downgrade(). 7822 */ 7823 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7824 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7825 fp->rf_access_write--; 7826 if (fp->rf_access_write == 0) 7827 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7828 fflags |= FWRITE; 7829 } 7830 7831 /* Check that the file is still accessible */ 7832 ASSERT(fp->rf_share_access); 7833 7834 rfs4_dbe_unlock(fp->rf_dbe); 7835 7836 /* now set the new open access and deny modes */ 7837 sp->rs_open_access = access; 7838 sp->rs_open_deny = deny; 7839 7840 /* 7841 * we successfully downgraded the share lock, now we need to downgrade 7842 * the open. it is possible that the downgrade was only for a deny 7843 * mode and we have nothing else to do. 7844 */ 7845 if ((fflags & (FREAD|FWRITE)) != 0) 7846 vn_open_downgrade(cs->vp, fflags); 7847 7848 /* Update the stateid */ 7849 next_stateid(&sp->rs_stateid); 7850 resp->open_stateid = sp->rs_stateid.stateid; 7851 7852 rfs4_dbe_unlock(sp->rs_dbe); 7853 7854 *cs->statusp = resp->status = NFS4_OK; 7855 /* Update the lease */ 7856 rfs4_update_lease(sp->rs_owner->ro_client); 7857 /* And the sequence */ 7858 rfs4_update_open_sequence(sp->rs_owner); 7859 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7860 7861 end: 7862 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7863 rfs4_state_rele(sp); 7864 out: 7865 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7866 OPEN_DOWNGRADE4res *, resp); 7867 } 7868 7869 /* 7870 * The logic behind this function is detailed in the NFSv4 RFC in the 7871 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7872 * that section for explicit guidance to server behavior for 7873 * SETCLIENTID. 7874 */ 7875 void 7876 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7877 struct svc_req *req, struct compound_state *cs) 7878 { 7879 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7880 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7881 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7882 rfs4_clntip_t *ci; 7883 bool_t create; 7884 char *addr, *netid; 7885 int len; 7886 7887 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7888 SETCLIENTID4args *, args); 7889 retry: 7890 newcp = cp_confirmed = cp_unconfirmed = NULL; 7891 7892 /* 7893 * Save the caller's IP address 7894 */ 7895 args->client.cl_addr = 7896 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7897 7898 /* 7899 * Record if it is a Solaris client that cannot handle referrals. 7900 */ 7901 if (strstr(args->client.id_val, "Solaris") && 7902 !strstr(args->client.id_val, "+referrals")) { 7903 /* Add a "yes, it's downrev" record */ 7904 create = TRUE; 7905 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7906 ASSERT(ci != NULL); 7907 rfs4_dbe_rele(ci->ri_dbe); 7908 } else { 7909 /* Remove any previous record */ 7910 rfs4_invalidate_clntip(args->client.cl_addr); 7911 } 7912 7913 /* 7914 * In search of an EXISTING client matching the incoming 7915 * request to establish a new client identifier at the server 7916 */ 7917 create = TRUE; 7918 cp = rfs4_findclient(&args->client, &create, NULL); 7919 7920 /* Should never happen */ 7921 ASSERT(cp != NULL); 7922 7923 if (cp == NULL) { 7924 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7925 goto out; 7926 } 7927 7928 /* 7929 * Easiest case. Client identifier is newly created and is 7930 * unconfirmed. Also note that for this case, no other 7931 * entries exist for the client identifier. Nothing else to 7932 * check. Just setup the response and respond. 7933 */ 7934 if (create) { 7935 *cs->statusp = res->status = NFS4_OK; 7936 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 7937 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7938 cp->rc_confirm_verf; 7939 /* Setup callback information; CB_NULL confirmation later */ 7940 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7941 7942 rfs4_client_rele(cp); 7943 goto out; 7944 } 7945 7946 /* 7947 * An existing, confirmed client may exist but it may not have 7948 * been active for at least one lease period. If so, then 7949 * "close" the client and create a new client identifier 7950 */ 7951 if (rfs4_lease_expired(cp)) { 7952 rfs4_client_close(cp); 7953 goto retry; 7954 } 7955 7956 if (cp->rc_need_confirm == TRUE) 7957 cp_unconfirmed = cp; 7958 else 7959 cp_confirmed = cp; 7960 7961 cp = NULL; 7962 7963 /* 7964 * We have a confirmed client, now check for an 7965 * unconfimred entry 7966 */ 7967 if (cp_confirmed) { 7968 /* If creds don't match then client identifier is inuse */ 7969 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 7970 rfs4_cbinfo_t *cbp; 7971 /* 7972 * Some one else has established this client 7973 * id. Try and say * who they are. We will use 7974 * the call back address supplied by * the 7975 * first client. 7976 */ 7977 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7978 7979 addr = netid = NULL; 7980 7981 cbp = &cp_confirmed->rc_cbinfo; 7982 if (cbp->cb_callback.cb_location.r_addr && 7983 cbp->cb_callback.cb_location.r_netid) { 7984 cb_client4 *cbcp = &cbp->cb_callback; 7985 7986 len = strlen(cbcp->cb_location.r_addr)+1; 7987 addr = kmem_alloc(len, KM_SLEEP); 7988 bcopy(cbcp->cb_location.r_addr, addr, len); 7989 len = strlen(cbcp->cb_location.r_netid)+1; 7990 netid = kmem_alloc(len, KM_SLEEP); 7991 bcopy(cbcp->cb_location.r_netid, netid, len); 7992 } 7993 7994 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7995 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7996 7997 rfs4_client_rele(cp_confirmed); 7998 } 7999 8000 /* 8001 * Confirmed, creds match, and verifier matches; must 8002 * be an update of the callback info 8003 */ 8004 if (cp_confirmed->rc_nfs_client.verifier == 8005 args->client.verifier) { 8006 /* Setup callback information */ 8007 rfs4_client_setcb(cp_confirmed, &args->callback, 8008 args->callback_ident); 8009 8010 /* everything okay -- move ahead */ 8011 *cs->statusp = res->status = NFS4_OK; 8012 res->SETCLIENTID4res_u.resok4.clientid = 8013 cp_confirmed->rc_clientid; 8014 8015 /* update the confirm_verifier and return it */ 8016 rfs4_client_scv_next(cp_confirmed); 8017 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8018 cp_confirmed->rc_confirm_verf; 8019 8020 rfs4_client_rele(cp_confirmed); 8021 goto out; 8022 } 8023 8024 /* 8025 * Creds match but the verifier doesn't. Must search 8026 * for an unconfirmed client that would be replaced by 8027 * this request. 8028 */ 8029 create = FALSE; 8030 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8031 cp_confirmed); 8032 } 8033 8034 /* 8035 * At this point, we have taken care of the brand new client 8036 * struct, INUSE case, update of an existing, and confirmed 8037 * client struct. 8038 */ 8039 8040 /* 8041 * check to see if things have changed while we originally 8042 * picked up the client struct. If they have, then return and 8043 * retry the processing of this SETCLIENTID request. 8044 */ 8045 if (cp_unconfirmed) { 8046 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8047 if (!cp_unconfirmed->rc_need_confirm) { 8048 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8049 rfs4_client_rele(cp_unconfirmed); 8050 if (cp_confirmed) 8051 rfs4_client_rele(cp_confirmed); 8052 goto retry; 8053 } 8054 /* do away with the old unconfirmed one */ 8055 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8056 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8057 rfs4_client_rele(cp_unconfirmed); 8058 cp_unconfirmed = NULL; 8059 } 8060 8061 /* 8062 * This search will temporarily hide the confirmed client 8063 * struct while a new client struct is created as the 8064 * unconfirmed one. 8065 */ 8066 create = TRUE; 8067 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8068 8069 ASSERT(newcp != NULL); 8070 8071 if (newcp == NULL) { 8072 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8073 rfs4_client_rele(cp_confirmed); 8074 goto out; 8075 } 8076 8077 /* 8078 * If one was not created, then a similar request must be in 8079 * process so release and start over with this one 8080 */ 8081 if (create != TRUE) { 8082 rfs4_client_rele(newcp); 8083 if (cp_confirmed) 8084 rfs4_client_rele(cp_confirmed); 8085 goto retry; 8086 } 8087 8088 *cs->statusp = res->status = NFS4_OK; 8089 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8090 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8091 newcp->rc_confirm_verf; 8092 /* Setup callback information; CB_NULL confirmation later */ 8093 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8094 8095 newcp->rc_cp_confirmed = cp_confirmed; 8096 8097 rfs4_client_rele(newcp); 8098 8099 out: 8100 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8101 SETCLIENTID4res *, res); 8102 } 8103 8104 /*ARGSUSED*/ 8105 void 8106 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8107 struct svc_req *req, struct compound_state *cs) 8108 { 8109 SETCLIENTID_CONFIRM4args *args = 8110 &argop->nfs_argop4_u.opsetclientid_confirm; 8111 SETCLIENTID_CONFIRM4res *res = 8112 &resop->nfs_resop4_u.opsetclientid_confirm; 8113 rfs4_client_t *cp, *cptoclose = NULL; 8114 8115 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8116 struct compound_state *, cs, 8117 SETCLIENTID_CONFIRM4args *, args); 8118 8119 *cs->statusp = res->status = NFS4_OK; 8120 8121 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8122 8123 if (cp == NULL) { 8124 *cs->statusp = res->status = 8125 rfs4_check_clientid(&args->clientid, 1); 8126 goto out; 8127 } 8128 8129 if (!creds_ok(cp, req, cs)) { 8130 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8131 rfs4_client_rele(cp); 8132 goto out; 8133 } 8134 8135 /* If the verifier doesn't match, the record doesn't match */ 8136 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8137 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8138 rfs4_client_rele(cp); 8139 goto out; 8140 } 8141 8142 rfs4_dbe_lock(cp->rc_dbe); 8143 cp->rc_need_confirm = FALSE; 8144 if (cp->rc_cp_confirmed) { 8145 cptoclose = cp->rc_cp_confirmed; 8146 cptoclose->rc_ss_remove = 1; 8147 cp->rc_cp_confirmed = NULL; 8148 } 8149 8150 /* 8151 * Update the client's associated server instance, if it's changed 8152 * since the client was created. 8153 */ 8154 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8155 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8156 8157 /* 8158 * Record clientid in stable storage. 8159 * Must be done after server instance has been assigned. 8160 */ 8161 rfs4_ss_clid(cp); 8162 8163 rfs4_dbe_unlock(cp->rc_dbe); 8164 8165 if (cptoclose) 8166 /* don't need to rele, client_close does it */ 8167 rfs4_client_close(cptoclose); 8168 8169 /* If needed, initiate CB_NULL call for callback path */ 8170 rfs4_deleg_cb_check(cp); 8171 rfs4_update_lease(cp); 8172 8173 /* 8174 * Check to see if client can perform reclaims 8175 */ 8176 rfs4_ss_chkclid(cp); 8177 8178 rfs4_client_rele(cp); 8179 8180 out: 8181 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8182 struct compound_state *, cs, 8183 SETCLIENTID_CONFIRM4 *, res); 8184 } 8185 8186 8187 /*ARGSUSED*/ 8188 void 8189 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8190 struct svc_req *req, struct compound_state *cs) 8191 { 8192 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8193 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8194 rfs4_state_t *sp; 8195 nfsstat4 status; 8196 8197 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8198 CLOSE4args *, args); 8199 8200 if (cs->vp == NULL) { 8201 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8202 goto out; 8203 } 8204 8205 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8206 if (status != NFS4_OK) { 8207 *cs->statusp = resp->status = status; 8208 goto out; 8209 } 8210 8211 /* Ensure specified filehandle matches */ 8212 if (cs->vp != sp->rs_finfo->rf_vp) { 8213 rfs4_state_rele(sp); 8214 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8215 goto out; 8216 } 8217 8218 /* hold off other access to open_owner while we tinker */ 8219 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8220 8221 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8222 case NFS4_CHECK_STATEID_OKAY: 8223 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8224 resop) != NFS4_CHKSEQ_OKAY) { 8225 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8226 goto end; 8227 } 8228 break; 8229 case NFS4_CHECK_STATEID_OLD: 8230 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8231 goto end; 8232 case NFS4_CHECK_STATEID_BAD: 8233 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8234 goto end; 8235 case NFS4_CHECK_STATEID_EXPIRED: 8236 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8237 goto end; 8238 case NFS4_CHECK_STATEID_CLOSED: 8239 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8240 goto end; 8241 case NFS4_CHECK_STATEID_UNCONFIRMED: 8242 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8243 goto end; 8244 case NFS4_CHECK_STATEID_REPLAY: 8245 /* Check the sequence id for the open owner */ 8246 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8247 resop)) { 8248 case NFS4_CHKSEQ_OKAY: 8249 /* 8250 * This is replayed stateid; if seqid matches 8251 * next expected, then client is using wrong seqid. 8252 */ 8253 /* FALL THROUGH */ 8254 case NFS4_CHKSEQ_BAD: 8255 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8256 goto end; 8257 case NFS4_CHKSEQ_REPLAY: 8258 /* 8259 * Note this case is the duplicate case so 8260 * resp->status is already set. 8261 */ 8262 *cs->statusp = resp->status; 8263 rfs4_update_lease(sp->rs_owner->ro_client); 8264 goto end; 8265 } 8266 break; 8267 default: 8268 ASSERT(FALSE); 8269 break; 8270 } 8271 8272 rfs4_dbe_lock(sp->rs_dbe); 8273 8274 /* Update the stateid. */ 8275 next_stateid(&sp->rs_stateid); 8276 resp->open_stateid = sp->rs_stateid.stateid; 8277 8278 rfs4_dbe_unlock(sp->rs_dbe); 8279 8280 rfs4_update_lease(sp->rs_owner->ro_client); 8281 rfs4_update_open_sequence(sp->rs_owner); 8282 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8283 8284 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8285 8286 *cs->statusp = resp->status = status; 8287 8288 end: 8289 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8290 rfs4_state_rele(sp); 8291 out: 8292 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8293 CLOSE4res *, resp); 8294 } 8295 8296 /* 8297 * Manage the counts on the file struct and close all file locks 8298 */ 8299 /*ARGSUSED*/ 8300 void 8301 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8302 bool_t close_of_client) 8303 { 8304 rfs4_file_t *fp = sp->rs_finfo; 8305 rfs4_lo_state_t *lsp; 8306 int fflags = 0; 8307 8308 /* 8309 * If this call is part of the larger closing down of client 8310 * state then it is just easier to release all locks 8311 * associated with this client instead of going through each 8312 * individual file and cleaning locks there. 8313 */ 8314 if (close_of_client) { 8315 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8316 !list_is_empty(&sp->rs_lostatelist) && 8317 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8318 /* Is the PxFS kernel module loaded? */ 8319 if (lm_remove_file_locks != NULL) { 8320 int new_sysid; 8321 8322 /* Encode the cluster nodeid in new sysid */ 8323 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8324 lm_set_nlmid_flk(&new_sysid); 8325 8326 /* 8327 * This PxFS routine removes file locks for a 8328 * client over all nodes of a cluster. 8329 */ 8330 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8331 "lm_remove_file_locks(sysid=0x%x)\n", 8332 new_sysid)); 8333 (*lm_remove_file_locks)(new_sysid); 8334 } else { 8335 struct flock64 flk; 8336 8337 /* Release all locks for this client */ 8338 flk.l_type = F_UNLKSYS; 8339 flk.l_whence = 0; 8340 flk.l_start = 0; 8341 flk.l_len = 0; 8342 flk.l_sysid = 8343 sp->rs_owner->ro_client->rc_sysidt; 8344 flk.l_pid = 0; 8345 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8346 &flk, F_REMOTELOCK | FREAD | FWRITE, 8347 (u_offset_t)0, NULL, CRED(), NULL); 8348 } 8349 8350 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8351 } 8352 } 8353 8354 /* 8355 * Release all locks on this file by this lock owner or at 8356 * least mark the locks as having been released 8357 */ 8358 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8359 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8360 lsp->rls_locks_cleaned = TRUE; 8361 8362 /* Was this already taken care of above? */ 8363 if (!close_of_client && 8364 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8365 (void) cleanlocks(sp->rs_finfo->rf_vp, 8366 lsp->rls_locker->rl_pid, 8367 lsp->rls_locker->rl_client->rc_sysidt); 8368 } 8369 8370 /* 8371 * Release any shrlocks associated with this open state ID. 8372 * This must be done before the rfs4_state gets marked closed. 8373 */ 8374 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8375 (void) rfs4_unshare(sp); 8376 8377 if (sp->rs_open_access) { 8378 rfs4_dbe_lock(fp->rf_dbe); 8379 8380 /* 8381 * Decrement the count for each access and deny bit that this 8382 * state has contributed to the file. 8383 * If the file counts go to zero 8384 * clear the appropriate bit in the appropriate mask. 8385 */ 8386 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8387 fp->rf_access_read--; 8388 fflags |= FREAD; 8389 if (fp->rf_access_read == 0) 8390 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8391 } 8392 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8393 fp->rf_access_write--; 8394 fflags |= FWRITE; 8395 if (fp->rf_access_write == 0) 8396 fp->rf_share_access &= 8397 ~OPEN4_SHARE_ACCESS_WRITE; 8398 } 8399 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8400 fp->rf_deny_read--; 8401 if (fp->rf_deny_read == 0) 8402 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8403 } 8404 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8405 fp->rf_deny_write--; 8406 if (fp->rf_deny_write == 0) 8407 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8408 } 8409 8410 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8411 8412 rfs4_dbe_unlock(fp->rf_dbe); 8413 8414 sp->rs_open_access = 0; 8415 sp->rs_open_deny = 0; 8416 } 8417 } 8418 8419 /* 8420 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8421 */ 8422 static nfsstat4 8423 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8424 { 8425 rfs4_lockowner_t *lo; 8426 rfs4_client_t *cp; 8427 uint32_t len; 8428 8429 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8430 if (lo != NULL) { 8431 cp = lo->rl_client; 8432 if (rfs4_lease_expired(cp)) { 8433 rfs4_lockowner_rele(lo); 8434 rfs4_dbe_hold(cp->rc_dbe); 8435 rfs4_client_close(cp); 8436 return (NFS4ERR_EXPIRED); 8437 } 8438 dp->owner.clientid = lo->rl_owner.clientid; 8439 len = lo->rl_owner.owner_len; 8440 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8441 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8442 dp->owner.owner_len = len; 8443 rfs4_lockowner_rele(lo); 8444 goto finish; 8445 } 8446 8447 /* 8448 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8449 * of the client id contain the boot time for a NFS4 lock. So we 8450 * fabricate and identity by setting clientid to the sysid, and 8451 * the lock owner to the pid. 8452 */ 8453 dp->owner.clientid = flk->l_sysid; 8454 len = sizeof (pid_t); 8455 dp->owner.owner_len = len; 8456 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8457 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8458 finish: 8459 dp->offset = flk->l_start; 8460 dp->length = flk->l_len; 8461 8462 if (flk->l_type == F_RDLCK) 8463 dp->locktype = READ_LT; 8464 else if (flk->l_type == F_WRLCK) 8465 dp->locktype = WRITE_LT; 8466 else 8467 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8468 8469 return (NFS4_OK); 8470 } 8471 8472 static int 8473 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8474 { 8475 int error; 8476 struct flock64 flk; 8477 int i; 8478 clock_t delaytime; 8479 int cmd; 8480 8481 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8482 retry: 8483 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8484 8485 for (i = 0; i < rfs4_maxlock_tries; i++) { 8486 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8487 error = VOP_FRLOCK(vp, cmd, 8488 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8489 8490 if (error != EAGAIN && error != EACCES) 8491 break; 8492 8493 if (i < rfs4_maxlock_tries - 1) { 8494 delay(delaytime); 8495 delaytime *= 2; 8496 } 8497 } 8498 8499 if (error == EAGAIN || error == EACCES) { 8500 /* Get the owner of the lock */ 8501 flk = *flock; 8502 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8503 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8504 (u_offset_t)0, NULL, cred, NULL) == 0) { 8505 if (flk.l_type == F_UNLCK) { 8506 /* No longer locked, retry */ 8507 goto retry; 8508 } 8509 *flock = flk; 8510 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8511 F_GETLK, &flk); 8512 } 8513 } 8514 8515 return (error); 8516 } 8517 8518 /*ARGSUSED*/ 8519 static nfsstat4 8520 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8521 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8522 { 8523 nfsstat4 status; 8524 rfs4_lockowner_t *lo = lsp->rls_locker; 8525 rfs4_state_t *sp = lsp->rls_state; 8526 struct flock64 flock; 8527 int16_t ltype; 8528 int flag; 8529 int error; 8530 sysid_t sysid; 8531 LOCK4res *lres; 8532 8533 if (rfs4_lease_expired(lo->rl_client)) { 8534 return (NFS4ERR_EXPIRED); 8535 } 8536 8537 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8538 return (status); 8539 8540 /* Check for zero length. To lock to end of file use all ones for V4 */ 8541 if (length == 0) 8542 return (NFS4ERR_INVAL); 8543 else if (length == (length4)(~0)) 8544 length = 0; /* Posix to end of file */ 8545 8546 retry: 8547 rfs4_dbe_lock(sp->rs_dbe); 8548 if (sp->rs_closed) { 8549 rfs4_dbe_unlock(sp->rs_dbe); 8550 return (NFS4ERR_OLD_STATEID); 8551 } 8552 8553 if (resop->resop != OP_LOCKU) { 8554 switch (locktype) { 8555 case READ_LT: 8556 case READW_LT: 8557 if ((sp->rs_share_access 8558 & OPEN4_SHARE_ACCESS_READ) == 0) { 8559 rfs4_dbe_unlock(sp->rs_dbe); 8560 8561 return (NFS4ERR_OPENMODE); 8562 } 8563 ltype = F_RDLCK; 8564 break; 8565 case WRITE_LT: 8566 case WRITEW_LT: 8567 if ((sp->rs_share_access 8568 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8569 rfs4_dbe_unlock(sp->rs_dbe); 8570 8571 return (NFS4ERR_OPENMODE); 8572 } 8573 ltype = F_WRLCK; 8574 break; 8575 } 8576 } else 8577 ltype = F_UNLCK; 8578 8579 flock.l_type = ltype; 8580 flock.l_whence = 0; /* SEEK_SET */ 8581 flock.l_start = offset; 8582 flock.l_len = length; 8583 flock.l_sysid = sysid; 8584 flock.l_pid = lsp->rls_locker->rl_pid; 8585 8586 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8587 if (flock.l_len < 0 || flock.l_start < 0) { 8588 rfs4_dbe_unlock(sp->rs_dbe); 8589 return (NFS4ERR_INVAL); 8590 } 8591 8592 /* 8593 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8594 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8595 */ 8596 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8597 8598 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8599 if (error == 0) { 8600 rfs4_dbe_lock(lsp->rls_dbe); 8601 next_stateid(&lsp->rls_lockid); 8602 rfs4_dbe_unlock(lsp->rls_dbe); 8603 } 8604 8605 rfs4_dbe_unlock(sp->rs_dbe); 8606 8607 /* 8608 * N.B. We map error values to nfsv4 errors. This is differrent 8609 * than puterrno4 routine. 8610 */ 8611 switch (error) { 8612 case 0: 8613 status = NFS4_OK; 8614 break; 8615 case EAGAIN: 8616 case EACCES: /* Old value */ 8617 /* Can only get here if op is OP_LOCK */ 8618 ASSERT(resop->resop == OP_LOCK); 8619 lres = &resop->nfs_resop4_u.oplock; 8620 status = NFS4ERR_DENIED; 8621 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8622 == NFS4ERR_EXPIRED) 8623 goto retry; 8624 break; 8625 case ENOLCK: 8626 status = NFS4ERR_DELAY; 8627 break; 8628 case EOVERFLOW: 8629 status = NFS4ERR_INVAL; 8630 break; 8631 case EINVAL: 8632 status = NFS4ERR_NOTSUPP; 8633 break; 8634 default: 8635 status = NFS4ERR_SERVERFAULT; 8636 break; 8637 } 8638 8639 return (status); 8640 } 8641 8642 /*ARGSUSED*/ 8643 void 8644 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8645 struct svc_req *req, struct compound_state *cs) 8646 { 8647 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8648 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8649 nfsstat4 status; 8650 stateid4 *stateid; 8651 rfs4_lockowner_t *lo; 8652 rfs4_client_t *cp; 8653 rfs4_state_t *sp = NULL; 8654 rfs4_lo_state_t *lsp = NULL; 8655 bool_t ls_sw_held = FALSE; 8656 bool_t create = TRUE; 8657 bool_t lcreate = TRUE; 8658 bool_t dup_lock = FALSE; 8659 int rc; 8660 8661 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8662 LOCK4args *, args); 8663 8664 if (cs->vp == NULL) { 8665 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8666 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8667 cs, LOCK4res *, resp); 8668 return; 8669 } 8670 8671 if (args->locker.new_lock_owner) { 8672 /* Create a new lockowner for this instance */ 8673 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8674 8675 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8676 8677 stateid = &olo->open_stateid; 8678 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8679 if (status != NFS4_OK) { 8680 NFS4_DEBUG(rfs4_debug, 8681 (CE_NOTE, "Get state failed in lock %d", status)); 8682 *cs->statusp = resp->status = status; 8683 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8684 cs, LOCK4res *, resp); 8685 return; 8686 } 8687 8688 /* Ensure specified filehandle matches */ 8689 if (cs->vp != sp->rs_finfo->rf_vp) { 8690 rfs4_state_rele(sp); 8691 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8692 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8693 cs, LOCK4res *, resp); 8694 return; 8695 } 8696 8697 /* hold off other access to open_owner while we tinker */ 8698 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8699 8700 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8701 case NFS4_CHECK_STATEID_OLD: 8702 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8703 goto end; 8704 case NFS4_CHECK_STATEID_BAD: 8705 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8706 goto end; 8707 case NFS4_CHECK_STATEID_EXPIRED: 8708 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8709 goto end; 8710 case NFS4_CHECK_STATEID_UNCONFIRMED: 8711 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8712 goto end; 8713 case NFS4_CHECK_STATEID_CLOSED: 8714 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8715 goto end; 8716 case NFS4_CHECK_STATEID_OKAY: 8717 case NFS4_CHECK_STATEID_REPLAY: 8718 switch (rfs4_check_olo_seqid(olo->open_seqid, 8719 sp->rs_owner, resop)) { 8720 case NFS4_CHKSEQ_OKAY: 8721 if (rc == NFS4_CHECK_STATEID_OKAY) 8722 break; 8723 /* 8724 * This is replayed stateid; if seqid 8725 * matches next expected, then client 8726 * is using wrong seqid. 8727 */ 8728 /* FALLTHROUGH */ 8729 case NFS4_CHKSEQ_BAD: 8730 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8731 goto end; 8732 case NFS4_CHKSEQ_REPLAY: 8733 /* This is a duplicate LOCK request */ 8734 dup_lock = TRUE; 8735 8736 /* 8737 * For a duplicate we do not want to 8738 * create a new lockowner as it should 8739 * already exist. 8740 * Turn off the lockowner create flag. 8741 */ 8742 lcreate = FALSE; 8743 } 8744 break; 8745 } 8746 8747 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8748 if (lo == NULL) { 8749 NFS4_DEBUG(rfs4_debug, 8750 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8751 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8752 goto end; 8753 } 8754 8755 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8756 if (lsp == NULL) { 8757 rfs4_update_lease(sp->rs_owner->ro_client); 8758 /* 8759 * Only update theh open_seqid if this is not 8760 * a duplicate request 8761 */ 8762 if (dup_lock == FALSE) { 8763 rfs4_update_open_sequence(sp->rs_owner); 8764 } 8765 8766 NFS4_DEBUG(rfs4_debug, 8767 (CE_NOTE, "rfs4_op_lock: no state")); 8768 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8769 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8770 rfs4_lockowner_rele(lo); 8771 goto end; 8772 } 8773 8774 /* 8775 * This is the new_lock_owner branch and the client is 8776 * supposed to be associating a new lock_owner with 8777 * the open file at this point. If we find that a 8778 * lock_owner/state association already exists and a 8779 * successful LOCK request was returned to the client, 8780 * an error is returned to the client since this is 8781 * not appropriate. The client should be using the 8782 * existing lock_owner branch. 8783 */ 8784 if (dup_lock == FALSE && create == FALSE) { 8785 if (lsp->rls_lock_completed == TRUE) { 8786 *cs->statusp = 8787 resp->status = NFS4ERR_BAD_SEQID; 8788 rfs4_lockowner_rele(lo); 8789 goto end; 8790 } 8791 } 8792 8793 rfs4_update_lease(sp->rs_owner->ro_client); 8794 8795 /* 8796 * Only update theh open_seqid if this is not 8797 * a duplicate request 8798 */ 8799 if (dup_lock == FALSE) { 8800 rfs4_update_open_sequence(sp->rs_owner); 8801 } 8802 8803 /* 8804 * If this is a duplicate lock request, just copy the 8805 * previously saved reply and return. 8806 */ 8807 if (dup_lock == TRUE) { 8808 /* verify that lock_seqid's match */ 8809 if (lsp->rls_seqid != olo->lock_seqid) { 8810 NFS4_DEBUG(rfs4_debug, 8811 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8812 "lsp->seqid=%d old->seqid=%d", 8813 lsp->rls_seqid, olo->lock_seqid)); 8814 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8815 } else { 8816 rfs4_copy_reply(resop, &lsp->rls_reply); 8817 /* 8818 * Make sure to copy the just 8819 * retrieved reply status into the 8820 * overall compound status 8821 */ 8822 *cs->statusp = resp->status; 8823 } 8824 rfs4_lockowner_rele(lo); 8825 goto end; 8826 } 8827 8828 rfs4_dbe_lock(lsp->rls_dbe); 8829 8830 /* Make sure to update the lock sequence id */ 8831 lsp->rls_seqid = olo->lock_seqid; 8832 8833 NFS4_DEBUG(rfs4_debug, 8834 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8835 8836 /* 8837 * This is used to signify the newly created lockowner 8838 * stateid and its sequence number. The checks for 8839 * sequence number and increment don't occur on the 8840 * very first lock request for a lockowner. 8841 */ 8842 lsp->rls_skip_seqid_check = TRUE; 8843 8844 /* hold off other access to lsp while we tinker */ 8845 rfs4_sw_enter(&lsp->rls_sw); 8846 ls_sw_held = TRUE; 8847 8848 rfs4_dbe_unlock(lsp->rls_dbe); 8849 8850 rfs4_lockowner_rele(lo); 8851 } else { 8852 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8853 /* get lsp and hold the lock on the underlying file struct */ 8854 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8855 != NFS4_OK) { 8856 *cs->statusp = resp->status = status; 8857 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8858 cs, LOCK4res *, resp); 8859 return; 8860 } 8861 create = FALSE; /* We didn't create lsp */ 8862 8863 /* Ensure specified filehandle matches */ 8864 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 8865 rfs4_lo_state_rele(lsp, TRUE); 8866 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8867 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8868 cs, LOCK4res *, resp); 8869 return; 8870 } 8871 8872 /* hold off other access to lsp while we tinker */ 8873 rfs4_sw_enter(&lsp->rls_sw); 8874 ls_sw_held = TRUE; 8875 8876 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8877 /* 8878 * The stateid looks like it was okay (expected to be 8879 * the next one) 8880 */ 8881 case NFS4_CHECK_STATEID_OKAY: 8882 /* 8883 * The sequence id is now checked. Determine 8884 * if this is a replay or if it is in the 8885 * expected (next) sequence. In the case of a 8886 * replay, there are two replay conditions 8887 * that may occur. The first is the normal 8888 * condition where a LOCK is done with a 8889 * NFS4_OK response and the stateid is 8890 * updated. That case is handled below when 8891 * the stateid is identified as a REPLAY. The 8892 * second is the case where an error is 8893 * returned, like NFS4ERR_DENIED, and the 8894 * sequence number is updated but the stateid 8895 * is not updated. This second case is dealt 8896 * with here. So it may seem odd that the 8897 * stateid is okay but the sequence id is a 8898 * replay but it is okay. 8899 */ 8900 switch (rfs4_check_lock_seqid( 8901 args->locker.locker4_u.lock_owner.lock_seqid, 8902 lsp, resop)) { 8903 case NFS4_CHKSEQ_REPLAY: 8904 if (resp->status != NFS4_OK) { 8905 /* 8906 * Here is our replay and need 8907 * to verify that the last 8908 * response was an error. 8909 */ 8910 *cs->statusp = resp->status; 8911 goto end; 8912 } 8913 /* 8914 * This is done since the sequence id 8915 * looked like a replay but it didn't 8916 * pass our check so a BAD_SEQID is 8917 * returned as a result. 8918 */ 8919 /*FALLTHROUGH*/ 8920 case NFS4_CHKSEQ_BAD: 8921 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8922 goto end; 8923 case NFS4_CHKSEQ_OKAY: 8924 /* Everything looks okay move ahead */ 8925 break; 8926 } 8927 break; 8928 case NFS4_CHECK_STATEID_OLD: 8929 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8930 goto end; 8931 case NFS4_CHECK_STATEID_BAD: 8932 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8933 goto end; 8934 case NFS4_CHECK_STATEID_EXPIRED: 8935 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8936 goto end; 8937 case NFS4_CHECK_STATEID_CLOSED: 8938 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8939 goto end; 8940 case NFS4_CHECK_STATEID_REPLAY: 8941 switch (rfs4_check_lock_seqid( 8942 args->locker.locker4_u.lock_owner.lock_seqid, 8943 lsp, resop)) { 8944 case NFS4_CHKSEQ_OKAY: 8945 /* 8946 * This is a replayed stateid; if 8947 * seqid matches the next expected, 8948 * then client is using wrong seqid. 8949 */ 8950 case NFS4_CHKSEQ_BAD: 8951 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8952 goto end; 8953 case NFS4_CHKSEQ_REPLAY: 8954 rfs4_update_lease(lsp->rls_locker->rl_client); 8955 *cs->statusp = status = resp->status; 8956 goto end; 8957 } 8958 break; 8959 default: 8960 ASSERT(FALSE); 8961 break; 8962 } 8963 8964 rfs4_update_lock_sequence(lsp); 8965 rfs4_update_lease(lsp->rls_locker->rl_client); 8966 } 8967 8968 /* 8969 * NFS4 only allows locking on regular files, so 8970 * verify type of object. 8971 */ 8972 if (cs->vp->v_type != VREG) { 8973 if (cs->vp->v_type == VDIR) 8974 status = NFS4ERR_ISDIR; 8975 else 8976 status = NFS4ERR_INVAL; 8977 goto out; 8978 } 8979 8980 cp = lsp->rls_state->rs_owner->ro_client; 8981 8982 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8983 status = NFS4ERR_GRACE; 8984 goto out; 8985 } 8986 8987 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 8988 status = NFS4ERR_NO_GRACE; 8989 goto out; 8990 } 8991 8992 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8993 status = NFS4ERR_NO_GRACE; 8994 goto out; 8995 } 8996 8997 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 8998 cs->deleg = TRUE; 8999 9000 status = rfs4_do_lock(lsp, args->locktype, 9001 args->offset, args->length, cs->cr, resop); 9002 9003 out: 9004 lsp->rls_skip_seqid_check = FALSE; 9005 9006 *cs->statusp = resp->status = status; 9007 9008 if (status == NFS4_OK) { 9009 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9010 lsp->rls_lock_completed = TRUE; 9011 } 9012 /* 9013 * Only update the "OPEN" response here if this was a new 9014 * lock_owner 9015 */ 9016 if (sp) 9017 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9018 9019 rfs4_update_lock_resp(lsp, resop); 9020 9021 end: 9022 if (lsp) { 9023 if (ls_sw_held) 9024 rfs4_sw_exit(&lsp->rls_sw); 9025 /* 9026 * If an sp obtained, then the lsp does not represent 9027 * a lock on the file struct. 9028 */ 9029 if (sp != NULL) 9030 rfs4_lo_state_rele(lsp, FALSE); 9031 else 9032 rfs4_lo_state_rele(lsp, TRUE); 9033 } 9034 if (sp) { 9035 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9036 rfs4_state_rele(sp); 9037 } 9038 9039 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9040 LOCK4res *, resp); 9041 } 9042 9043 /* free function for LOCK/LOCKT */ 9044 static void 9045 lock_denied_free(nfs_resop4 *resop) 9046 { 9047 LOCK4denied *dp = NULL; 9048 9049 switch (resop->resop) { 9050 case OP_LOCK: 9051 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9052 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9053 break; 9054 case OP_LOCKT: 9055 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9056 dp = &resop->nfs_resop4_u.oplockt.denied; 9057 break; 9058 default: 9059 break; 9060 } 9061 9062 if (dp) 9063 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9064 } 9065 9066 /*ARGSUSED*/ 9067 void 9068 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9069 struct svc_req *req, struct compound_state *cs) 9070 { 9071 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9072 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9073 nfsstat4 status; 9074 stateid4 *stateid = &args->lock_stateid; 9075 rfs4_lo_state_t *lsp; 9076 9077 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9078 LOCKU4args *, args); 9079 9080 if (cs->vp == NULL) { 9081 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9082 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9083 LOCKU4res *, resp); 9084 return; 9085 } 9086 9087 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9088 *cs->statusp = resp->status = status; 9089 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9090 LOCKU4res *, resp); 9091 return; 9092 } 9093 9094 /* Ensure specified filehandle matches */ 9095 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9096 rfs4_lo_state_rele(lsp, TRUE); 9097 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9098 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9099 LOCKU4res *, resp); 9100 return; 9101 } 9102 9103 /* hold off other access to lsp while we tinker */ 9104 rfs4_sw_enter(&lsp->rls_sw); 9105 9106 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9107 case NFS4_CHECK_STATEID_OKAY: 9108 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9109 != NFS4_CHKSEQ_OKAY) { 9110 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9111 goto end; 9112 } 9113 break; 9114 case NFS4_CHECK_STATEID_OLD: 9115 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9116 goto end; 9117 case NFS4_CHECK_STATEID_BAD: 9118 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9119 goto end; 9120 case NFS4_CHECK_STATEID_EXPIRED: 9121 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9122 goto end; 9123 case NFS4_CHECK_STATEID_CLOSED: 9124 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9125 goto end; 9126 case NFS4_CHECK_STATEID_REPLAY: 9127 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9128 case NFS4_CHKSEQ_OKAY: 9129 /* 9130 * This is a replayed stateid; if 9131 * seqid matches the next expected, 9132 * then client is using wrong seqid. 9133 */ 9134 case NFS4_CHKSEQ_BAD: 9135 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9136 goto end; 9137 case NFS4_CHKSEQ_REPLAY: 9138 rfs4_update_lease(lsp->rls_locker->rl_client); 9139 *cs->statusp = status = resp->status; 9140 goto end; 9141 } 9142 break; 9143 default: 9144 ASSERT(FALSE); 9145 break; 9146 } 9147 9148 rfs4_update_lock_sequence(lsp); 9149 rfs4_update_lease(lsp->rls_locker->rl_client); 9150 9151 /* 9152 * NFS4 only allows locking on regular files, so 9153 * verify type of object. 9154 */ 9155 if (cs->vp->v_type != VREG) { 9156 if (cs->vp->v_type == VDIR) 9157 status = NFS4ERR_ISDIR; 9158 else 9159 status = NFS4ERR_INVAL; 9160 goto out; 9161 } 9162 9163 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9164 status = NFS4ERR_GRACE; 9165 goto out; 9166 } 9167 9168 status = rfs4_do_lock(lsp, args->locktype, 9169 args->offset, args->length, cs->cr, resop); 9170 9171 out: 9172 *cs->statusp = resp->status = status; 9173 9174 if (status == NFS4_OK) 9175 resp->lock_stateid = lsp->rls_lockid.stateid; 9176 9177 rfs4_update_lock_resp(lsp, resop); 9178 9179 end: 9180 rfs4_sw_exit(&lsp->rls_sw); 9181 rfs4_lo_state_rele(lsp, TRUE); 9182 9183 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9184 LOCKU4res *, resp); 9185 } 9186 9187 /* 9188 * LOCKT is a best effort routine, the client can not be guaranteed that 9189 * the status return is still in effect by the time the reply is received. 9190 * They are numerous race conditions in this routine, but we are not required 9191 * and can not be accurate. 9192 */ 9193 /*ARGSUSED*/ 9194 void 9195 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9196 struct svc_req *req, struct compound_state *cs) 9197 { 9198 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9199 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9200 rfs4_lockowner_t *lo; 9201 rfs4_client_t *cp; 9202 bool_t create = FALSE; 9203 struct flock64 flk; 9204 int error; 9205 int flag = FREAD | FWRITE; 9206 int ltype; 9207 length4 posix_length; 9208 sysid_t sysid; 9209 pid_t pid; 9210 9211 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9212 LOCKT4args *, args); 9213 9214 if (cs->vp == NULL) { 9215 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9216 goto out; 9217 } 9218 9219 /* 9220 * NFS4 only allows locking on regular files, so 9221 * verify type of object. 9222 */ 9223 if (cs->vp->v_type != VREG) { 9224 if (cs->vp->v_type == VDIR) 9225 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9226 else 9227 *cs->statusp = resp->status = NFS4ERR_INVAL; 9228 goto out; 9229 } 9230 9231 /* 9232 * Check out the clientid to ensure the server knows about it 9233 * so that we correctly inform the client of a server reboot. 9234 */ 9235 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9236 == NULL) { 9237 *cs->statusp = resp->status = 9238 rfs4_check_clientid(&args->owner.clientid, 0); 9239 goto out; 9240 } 9241 if (rfs4_lease_expired(cp)) { 9242 rfs4_client_close(cp); 9243 /* 9244 * Protocol doesn't allow returning NFS4ERR_STALE as 9245 * other operations do on this check so STALE_CLIENTID 9246 * is returned instead 9247 */ 9248 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9249 goto out; 9250 } 9251 9252 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9253 *cs->statusp = resp->status = NFS4ERR_GRACE; 9254 rfs4_client_rele(cp); 9255 goto out; 9256 } 9257 rfs4_client_rele(cp); 9258 9259 resp->status = NFS4_OK; 9260 9261 switch (args->locktype) { 9262 case READ_LT: 9263 case READW_LT: 9264 ltype = F_RDLCK; 9265 break; 9266 case WRITE_LT: 9267 case WRITEW_LT: 9268 ltype = F_WRLCK; 9269 break; 9270 } 9271 9272 posix_length = args->length; 9273 /* Check for zero length. To lock to end of file use all ones for V4 */ 9274 if (posix_length == 0) { 9275 *cs->statusp = resp->status = NFS4ERR_INVAL; 9276 goto out; 9277 } else if (posix_length == (length4)(~0)) { 9278 posix_length = 0; /* Posix to end of file */ 9279 } 9280 9281 /* Find or create a lockowner */ 9282 lo = rfs4_findlockowner(&args->owner, &create); 9283 9284 if (lo) { 9285 pid = lo->rl_pid; 9286 if ((resp->status = 9287 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9288 goto err; 9289 } else { 9290 pid = 0; 9291 sysid = lockt_sysid; 9292 } 9293 retry: 9294 flk.l_type = ltype; 9295 flk.l_whence = 0; /* SEEK_SET */ 9296 flk.l_start = args->offset; 9297 flk.l_len = posix_length; 9298 flk.l_sysid = sysid; 9299 flk.l_pid = pid; 9300 flag |= F_REMOTELOCK; 9301 9302 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9303 9304 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9305 if (flk.l_len < 0 || flk.l_start < 0) { 9306 resp->status = NFS4ERR_INVAL; 9307 goto err; 9308 } 9309 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9310 NULL, cs->cr, NULL); 9311 9312 /* 9313 * N.B. We map error values to nfsv4 errors. This is differrent 9314 * than puterrno4 routine. 9315 */ 9316 switch (error) { 9317 case 0: 9318 if (flk.l_type == F_UNLCK) 9319 resp->status = NFS4_OK; 9320 else { 9321 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9322 goto retry; 9323 resp->status = NFS4ERR_DENIED; 9324 } 9325 break; 9326 case EOVERFLOW: 9327 resp->status = NFS4ERR_INVAL; 9328 break; 9329 case EINVAL: 9330 resp->status = NFS4ERR_NOTSUPP; 9331 break; 9332 default: 9333 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9334 error); 9335 resp->status = NFS4ERR_SERVERFAULT; 9336 break; 9337 } 9338 9339 err: 9340 if (lo) 9341 rfs4_lockowner_rele(lo); 9342 *cs->statusp = resp->status; 9343 out: 9344 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9345 LOCKT4res *, resp); 9346 } 9347 9348 int 9349 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9350 { 9351 int err; 9352 int cmd; 9353 vnode_t *vp; 9354 struct shrlock shr; 9355 struct shr_locowner shr_loco; 9356 int fflags = 0; 9357 9358 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9359 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9360 9361 if (sp->rs_closed) 9362 return (NFS4ERR_OLD_STATEID); 9363 9364 vp = sp->rs_finfo->rf_vp; 9365 ASSERT(vp); 9366 9367 shr.s_access = shr.s_deny = 0; 9368 9369 if (access & OPEN4_SHARE_ACCESS_READ) { 9370 fflags |= FREAD; 9371 shr.s_access |= F_RDACC; 9372 } 9373 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9374 fflags |= FWRITE; 9375 shr.s_access |= F_WRACC; 9376 } 9377 ASSERT(shr.s_access); 9378 9379 if (deny & OPEN4_SHARE_DENY_READ) 9380 shr.s_deny |= F_RDDNY; 9381 if (deny & OPEN4_SHARE_DENY_WRITE) 9382 shr.s_deny |= F_WRDNY; 9383 9384 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9385 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9386 shr_loco.sl_pid = shr.s_pid; 9387 shr_loco.sl_id = shr.s_sysid; 9388 shr.s_owner = (caddr_t)&shr_loco; 9389 shr.s_own_len = sizeof (shr_loco); 9390 9391 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9392 9393 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9394 if (err != 0) { 9395 if (err == EAGAIN) 9396 err = NFS4ERR_SHARE_DENIED; 9397 else 9398 err = puterrno4(err); 9399 return (err); 9400 } 9401 9402 sp->rs_share_access |= access; 9403 sp->rs_share_deny |= deny; 9404 9405 return (0); 9406 } 9407 9408 int 9409 rfs4_unshare(rfs4_state_t *sp) 9410 { 9411 int err; 9412 struct shrlock shr; 9413 struct shr_locowner shr_loco; 9414 9415 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9416 9417 if (sp->rs_closed || sp->rs_share_access == 0) 9418 return (0); 9419 9420 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9421 ASSERT(sp->rs_finfo->rf_vp); 9422 9423 shr.s_access = shr.s_deny = 0; 9424 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9425 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9426 shr_loco.sl_pid = shr.s_pid; 9427 shr_loco.sl_id = shr.s_sysid; 9428 shr.s_owner = (caddr_t)&shr_loco; 9429 shr.s_own_len = sizeof (shr_loco); 9430 9431 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9432 NULL); 9433 if (err != 0) { 9434 err = puterrno4(err); 9435 return (err); 9436 } 9437 9438 sp->rs_share_access = 0; 9439 sp->rs_share_deny = 0; 9440 9441 return (0); 9442 9443 } 9444 9445 static int 9446 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9447 { 9448 struct clist *wcl; 9449 count4 count = rok->data_len; 9450 int wlist_len; 9451 9452 wcl = args->wlist; 9453 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9454 return (FALSE); 9455 } 9456 wcl = args->wlist; 9457 rok->wlist_len = wlist_len; 9458 rok->wlist = wcl; 9459 return (TRUE); 9460 } 9461 9462 /* tunable to disable server referrals */ 9463 int rfs4_no_referrals = 0; 9464 9465 /* 9466 * Find an NFS record in reparse point data. 9467 * Returns 0 for success and <0 or an errno value on failure. 9468 */ 9469 int 9470 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9471 { 9472 int err; 9473 char *stype, *val; 9474 nvlist_t *nvl; 9475 nvpair_t *curr; 9476 9477 if ((nvl = reparse_init()) == NULL) 9478 return (-1); 9479 9480 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9481 reparse_free(nvl); 9482 return (err); 9483 } 9484 9485 curr = NULL; 9486 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9487 if ((stype = nvpair_name(curr)) == NULL) { 9488 reparse_free(nvl); 9489 return (-2); 9490 } 9491 if (strncasecmp(stype, "NFS", 3) == 0) 9492 break; 9493 } 9494 9495 if ((curr == NULL) || 9496 (nvpair_value_string(curr, &val))) { 9497 reparse_free(nvl); 9498 return (-3); 9499 } 9500 *nvlp = nvl; 9501 *svcp = stype; 9502 *datap = val; 9503 return (0); 9504 } 9505 9506 int 9507 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9508 { 9509 nvlist_t *nvl; 9510 char *s, *d; 9511 9512 if (rfs4_no_referrals != 0) 9513 return (B_FALSE); 9514 9515 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9516 return (B_FALSE); 9517 9518 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9519 return (B_FALSE); 9520 9521 reparse_free(nvl); 9522 9523 return (B_TRUE); 9524 } 9525 9526 /* 9527 * There is a user-level copy of this routine in ref_subr.c. 9528 * Changes should be kept in sync. 9529 */ 9530 static int 9531 nfs4_create_components(char *path, component4 *comp4) 9532 { 9533 int slen, plen, ncomp; 9534 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9535 9536 if (path == NULL) 9537 return (0); 9538 9539 plen = strlen(path) + 1; /* include the terminator */ 9540 ori_path = path; 9541 ncomp = 0; 9542 9543 /* count number of components in the path */ 9544 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9545 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9546 if ((slen = nxtc - path) == 0) { 9547 path = nxtc + 1; 9548 continue; 9549 } 9550 9551 if (comp4 != NULL) { 9552 bcopy(path, buf, slen); 9553 buf[slen] = '\0'; 9554 (void) str_to_utf8(buf, &comp4[ncomp]); 9555 } 9556 9557 ncomp++; /* 1 valid component */ 9558 path = nxtc + 1; 9559 } 9560 if (*nxtc == '\0' || *nxtc == '\n') 9561 break; 9562 } 9563 9564 return (ncomp); 9565 } 9566 9567 /* 9568 * There is a user-level copy of this routine in ref_subr.c. 9569 * Changes should be kept in sync. 9570 */ 9571 static int 9572 make_pathname4(char *path, pathname4 *pathname) 9573 { 9574 int ncomp; 9575 component4 *comp4; 9576 9577 if (pathname == NULL) 9578 return (0); 9579 9580 if (path == NULL) { 9581 pathname->pathname4_val = NULL; 9582 pathname->pathname4_len = 0; 9583 return (0); 9584 } 9585 9586 /* count number of components to alloc buffer */ 9587 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9588 pathname->pathname4_val = NULL; 9589 pathname->pathname4_len = 0; 9590 return (0); 9591 } 9592 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9593 9594 /* copy components into allocated buffer */ 9595 ncomp = nfs4_create_components(path, comp4); 9596 9597 pathname->pathname4_val = comp4; 9598 pathname->pathname4_len = ncomp; 9599 9600 return (ncomp); 9601 } 9602 9603 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9604 9605 fs_locations4 * 9606 fetch_referral(vnode_t *vp, cred_t *cr) 9607 { 9608 nvlist_t *nvl; 9609 char *stype, *sdata; 9610 fs_locations4 *result; 9611 char buf[1024]; 9612 size_t bufsize; 9613 XDR xdr; 9614 int err; 9615 9616 /* 9617 * Check attrs to ensure it's a reparse point 9618 */ 9619 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9620 return (NULL); 9621 9622 /* 9623 * Look for an NFS record and get the type and data 9624 */ 9625 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9626 return (NULL); 9627 9628 /* 9629 * With the type and data, upcall to get the referral 9630 */ 9631 bufsize = sizeof (buf); 9632 bzero(buf, sizeof (buf)); 9633 err = reparse_kderef((const char *)stype, (const char *)sdata, 9634 buf, &bufsize); 9635 reparse_free(nvl); 9636 9637 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9638 char *, stype, char *, sdata, char *, buf, int, err); 9639 if (err) { 9640 cmn_err(CE_NOTE, 9641 "reparsed daemon not running: unable to get referral (%d)", 9642 err); 9643 return (NULL); 9644 } 9645 9646 /* 9647 * We get an XDR'ed record back from the kderef call 9648 */ 9649 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9650 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9651 err = xdr_fs_locations4(&xdr, result); 9652 XDR_DESTROY(&xdr); 9653 if (err != TRUE) { 9654 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9655 int, err); 9656 return (NULL); 9657 } 9658 9659 /* 9660 * Look at path to recover fs_root, ignoring the leading '/' 9661 */ 9662 (void) make_pathname4(vp->v_path, &result->fs_root); 9663 9664 return (result); 9665 } 9666 9667 char * 9668 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9669 { 9670 fs_locations4 *fsl; 9671 fs_location4 *fs; 9672 char *server, *path, *symbuf; 9673 static char *prefix = "/net/"; 9674 int i, size, npaths; 9675 uint_t len; 9676 9677 /* Get the referral */ 9678 if ((fsl = fetch_referral(vp, cr)) == NULL) 9679 return (NULL); 9680 9681 /* Deal with only the first location and first server */ 9682 fs = &fsl->locations_val[0]; 9683 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9684 if (server == NULL) { 9685 rfs4_free_fs_locations4(fsl); 9686 kmem_free(fsl, sizeof (fs_locations4)); 9687 return (NULL); 9688 } 9689 9690 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9691 size = strlen(prefix) + len; 9692 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9693 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9694 9695 /* Allocate the symlink buffer and fill it */ 9696 symbuf = kmem_zalloc(size, KM_SLEEP); 9697 (void) strcat(symbuf, prefix); 9698 (void) strcat(symbuf, server); 9699 kmem_free(server, len); 9700 9701 npaths = 0; 9702 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9703 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9704 if (path == NULL) 9705 continue; 9706 (void) strcat(symbuf, "/"); 9707 (void) strcat(symbuf, path); 9708 npaths++; 9709 kmem_free(path, len); 9710 } 9711 9712 rfs4_free_fs_locations4(fsl); 9713 kmem_free(fsl, sizeof (fs_locations4)); 9714 9715 if (strsz != NULL) 9716 *strsz = size; 9717 return (symbuf); 9718 } 9719 9720 /* 9721 * Check to see if we have a downrev Solaris client, so that we 9722 * can send it a symlink instead of a referral. 9723 */ 9724 int 9725 client_is_downrev(struct svc_req *req) 9726 { 9727 struct sockaddr *ca; 9728 rfs4_clntip_t *ci; 9729 bool_t create = FALSE; 9730 int is_downrev; 9731 9732 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9733 ASSERT(ca); 9734 ci = rfs4_find_clntip(ca, &create); 9735 if (ci == NULL) 9736 return (0); 9737 is_downrev = ci->ri_no_referrals; 9738 rfs4_dbe_rele(ci->ri_dbe); 9739 return (is_downrev); 9740 } 9741