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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 /* 26 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 27 * All Rights Reserved 28 */ 29 30 #include <sys/param.h> 31 #include <sys/types.h> 32 #include <sys/systm.h> 33 #include <sys/cred.h> 34 #include <sys/buf.h> 35 #include <sys/vfs.h> 36 #include <sys/vfs_opreg.h> 37 #include <sys/vnode.h> 38 #include <sys/uio.h> 39 #include <sys/errno.h> 40 #include <sys/sysmacros.h> 41 #include <sys/statvfs.h> 42 #include <sys/kmem.h> 43 #include <sys/dirent.h> 44 #include <sys/cmn_err.h> 45 #include <sys/debug.h> 46 #include <sys/systeminfo.h> 47 #include <sys/flock.h> 48 #include <sys/pathname.h> 49 #include <sys/nbmlock.h> 50 #include <sys/share.h> 51 #include <sys/atomic.h> 52 #include <sys/policy.h> 53 #include <sys/fem.h> 54 #include <sys/sdt.h> 55 #include <sys/ddi.h> 56 #include <sys/zone.h> 57 58 #include <fs/fs_reparse.h> 59 60 #include <rpc/types.h> 61 #include <rpc/auth.h> 62 #include <rpc/rpcsec_gss.h> 63 #include <rpc/svc.h> 64 65 #include <nfs/nfs.h> 66 #include <nfs/export.h> 67 #include <nfs/nfs_cmd.h> 68 #include <nfs/lm.h> 69 #include <nfs/nfs4.h> 70 71 #include <sys/strsubr.h> 72 #include <sys/strsun.h> 73 74 #include <inet/common.h> 75 #include <inet/ip.h> 76 #include <inet/ip6.h> 77 78 #include <sys/tsol/label.h> 79 #include <sys/tsol/tndb.h> 80 81 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 82 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 83 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 84 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 85 extern struct svc_ops rdma_svc_ops; 86 extern int nfs_loaned_buffers; 87 /* End of Tunables */ 88 89 static int rdma_setup_read_data4(READ4args *, READ4res *); 90 91 /* 92 * Used to bump the stateid4.seqid value and show changes in the stateid 93 */ 94 #define next_stateid(sp) (++(sp)->bits.chgseq) 95 96 /* 97 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 98 * This is used to return NFS4ERR_TOOSMALL when clients specify 99 * maxcount that isn't large enough to hold the smallest possible 100 * XDR encoded dirent. 101 * 102 * sizeof cookie (8 bytes) + 103 * sizeof name_len (4 bytes) + 104 * sizeof smallest (padded) name (4 bytes) + 105 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 106 * sizeof attrlist4_len (4 bytes) + 107 * sizeof next boolean (4 bytes) 108 * 109 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 110 * the smallest possible entry4 (assumes no attrs requested). 111 * sizeof nfsstat4 (4 bytes) + 112 * sizeof verifier4 (8 bytes) + 113 * sizeof entry4list bool (4 bytes) + 114 * sizeof entry4 (36 bytes) + 115 * sizeof eof bool (4 bytes) 116 * 117 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 118 * VOP_READDIR. Its value is the size of the maximum possible dirent 119 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 120 * required for a given name length. MAXNAMELEN is the maximum 121 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 122 * macros are to allow for . and .. entries -- just a minor tweak to try 123 * and guarantee that buffer we give to VOP_READDIR will be large enough 124 * to hold ., .., and the largest possible solaris dirent64. 125 */ 126 #define RFS4_MINLEN_ENTRY4 36 127 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 128 #define RFS4_MINLEN_RDDIR_BUF \ 129 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 130 131 /* 132 * It would be better to pad to 4 bytes since that's what XDR would do, 133 * but the dirents UFS gives us are already padded to 8, so just take 134 * what we're given. Dircount is only a hint anyway. Currently the 135 * solaris kernel is ASCII only, so there's no point in calling the 136 * UTF8 functions. 137 * 138 * dirent64: named padded to provide 8 byte struct alignment 139 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 140 * 141 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 142 * 143 */ 144 #define DIRENT64_TO_DIRCOUNT(dp) \ 145 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 146 147 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 148 149 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 150 151 u_longlong_t nfs4_srv_caller_id; 152 uint_t nfs4_srv_vkey = 0; 153 154 verifier4 Write4verf; 155 verifier4 Readdir4verf; 156 157 void rfs4_init_compound_state(struct compound_state *); 158 159 static void nullfree(caddr_t); 160 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 161 struct compound_state *); 162 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 163 struct compound_state *); 164 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_create_free(nfs_resop4 *resop); 171 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 172 struct svc_req *, struct compound_state *); 173 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 174 struct svc_req *, struct compound_state *); 175 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 176 struct compound_state *); 177 static void rfs4_op_getattr_free(nfs_resop4 *); 178 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 179 struct compound_state *); 180 static void rfs4_op_getfh_free(nfs_resop4 *); 181 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 184 struct compound_state *); 185 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void lock_denied_free(nfs_resop4 *); 188 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 197 struct svc_req *req, struct compound_state *cs); 198 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 201 struct compound_state *); 202 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 203 struct svc_req *, struct compound_state *); 204 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 205 struct svc_req *, struct compound_state *); 206 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 207 struct compound_state *); 208 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 209 struct compound_state *); 210 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_read_free(nfs_resop4 *); 215 static void rfs4_op_readdir_free(nfs_resop4 *resop); 216 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 217 struct compound_state *); 218 static void rfs4_op_readlink_free(nfs_resop4 *); 219 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 220 struct svc_req *, struct compound_state *); 221 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 222 struct compound_state *); 223 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 236 struct compound_state *); 237 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 238 struct svc_req *, struct compound_state *); 239 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 240 struct svc_req *req, struct compound_state *); 241 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 242 struct compound_state *); 243 static void rfs4_op_secinfo_free(nfs_resop4 *); 244 245 static nfsstat4 check_open_access(uint32_t, 246 struct compound_state *, struct svc_req *); 247 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 248 void rfs4_ss_clid(rfs4_client_t *); 249 250 /* 251 * translation table for attrs 252 */ 253 struct nfs4_ntov_table { 254 union nfs4_attr_u *na; 255 uint8_t amap[NFS4_MAXNUM_ATTRS]; 256 int attrcnt; 257 bool_t vfsstat; 258 }; 259 260 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 261 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 262 struct nfs4_svgetit_arg *sargp); 263 264 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 265 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 266 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 267 268 fem_t *deleg_rdops; 269 fem_t *deleg_wrops; 270 271 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 272 kmutex_t rfs4_servinst_lock; /* protects linked list */ 273 int rfs4_seen_first_compound; /* set first time we see one */ 274 275 /* 276 * NFS4 op dispatch table 277 */ 278 279 struct rfsv4disp { 280 void (*dis_proc)(); /* proc to call */ 281 void (*dis_resfree)(); /* frees space allocated by proc */ 282 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 283 }; 284 285 static struct rfsv4disp rfsv4disptab[] = { 286 /* 287 * NFS VERSION 4 288 */ 289 290 /* RFS_NULL = 0 */ 291 {rfs4_op_illegal, nullfree, 0}, 292 293 /* UNUSED = 1 */ 294 {rfs4_op_illegal, nullfree, 0}, 295 296 /* UNUSED = 2 */ 297 {rfs4_op_illegal, nullfree, 0}, 298 299 /* OP_ACCESS = 3 */ 300 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 301 302 /* OP_CLOSE = 4 */ 303 {rfs4_op_close, nullfree, 0}, 304 305 /* OP_COMMIT = 5 */ 306 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 307 308 /* OP_CREATE = 6 */ 309 {rfs4_op_create, nullfree, 0}, 310 311 /* OP_DELEGPURGE = 7 */ 312 {rfs4_op_delegpurge, nullfree, 0}, 313 314 /* OP_DELEGRETURN = 8 */ 315 {rfs4_op_delegreturn, nullfree, 0}, 316 317 /* OP_GETATTR = 9 */ 318 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 319 320 /* OP_GETFH = 10 */ 321 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 322 323 /* OP_LINK = 11 */ 324 {rfs4_op_link, nullfree, 0}, 325 326 /* OP_LOCK = 12 */ 327 {rfs4_op_lock, lock_denied_free, 0}, 328 329 /* OP_LOCKT = 13 */ 330 {rfs4_op_lockt, lock_denied_free, 0}, 331 332 /* OP_LOCKU = 14 */ 333 {rfs4_op_locku, nullfree, 0}, 334 335 /* OP_LOOKUP = 15 */ 336 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 337 338 /* OP_LOOKUPP = 16 */ 339 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 340 341 /* OP_NVERIFY = 17 */ 342 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 343 344 /* OP_OPEN = 18 */ 345 {rfs4_op_open, rfs4_free_reply, 0}, 346 347 /* OP_OPENATTR = 19 */ 348 {rfs4_op_openattr, nullfree, 0}, 349 350 /* OP_OPEN_CONFIRM = 20 */ 351 {rfs4_op_open_confirm, nullfree, 0}, 352 353 /* OP_OPEN_DOWNGRADE = 21 */ 354 {rfs4_op_open_downgrade, nullfree, 0}, 355 356 /* OP_OPEN_PUTFH = 22 */ 357 {rfs4_op_putfh, nullfree, RPC_ALL}, 358 359 /* OP_PUTPUBFH = 23 */ 360 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 361 362 /* OP_PUTROOTFH = 24 */ 363 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 364 365 /* OP_READ = 25 */ 366 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 367 368 /* OP_READDIR = 26 */ 369 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 370 371 /* OP_READLINK = 27 */ 372 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 373 374 /* OP_REMOVE = 28 */ 375 {rfs4_op_remove, nullfree, 0}, 376 377 /* OP_RENAME = 29 */ 378 {rfs4_op_rename, nullfree, 0}, 379 380 /* OP_RENEW = 30 */ 381 {rfs4_op_renew, nullfree, 0}, 382 383 /* OP_RESTOREFH = 31 */ 384 {rfs4_op_restorefh, nullfree, RPC_ALL}, 385 386 /* OP_SAVEFH = 32 */ 387 {rfs4_op_savefh, nullfree, RPC_ALL}, 388 389 /* OP_SECINFO = 33 */ 390 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 391 392 /* OP_SETATTR = 34 */ 393 {rfs4_op_setattr, nullfree, 0}, 394 395 /* OP_SETCLIENTID = 35 */ 396 {rfs4_op_setclientid, nullfree, 0}, 397 398 /* OP_SETCLIENTID_CONFIRM = 36 */ 399 {rfs4_op_setclientid_confirm, nullfree, 0}, 400 401 /* OP_VERIFY = 37 */ 402 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 403 404 /* OP_WRITE = 38 */ 405 {rfs4_op_write, nullfree, 0}, 406 407 /* OP_RELEASE_LOCKOWNER = 39 */ 408 {rfs4_op_release_lockowner, nullfree, 0}, 409 }; 410 411 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 412 413 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 414 415 #ifdef DEBUG 416 417 int rfs4_fillone_debug = 0; 418 int rfs4_no_stub_access = 1; 419 int rfs4_rddir_debug = 0; 420 421 static char *rfs4_op_string[] = { 422 "rfs4_op_null", 423 "rfs4_op_1 unused", 424 "rfs4_op_2 unused", 425 "rfs4_op_access", 426 "rfs4_op_close", 427 "rfs4_op_commit", 428 "rfs4_op_create", 429 "rfs4_op_delegpurge", 430 "rfs4_op_delegreturn", 431 "rfs4_op_getattr", 432 "rfs4_op_getfh", 433 "rfs4_op_link", 434 "rfs4_op_lock", 435 "rfs4_op_lockt", 436 "rfs4_op_locku", 437 "rfs4_op_lookup", 438 "rfs4_op_lookupp", 439 "rfs4_op_nverify", 440 "rfs4_op_open", 441 "rfs4_op_openattr", 442 "rfs4_op_open_confirm", 443 "rfs4_op_open_downgrade", 444 "rfs4_op_putfh", 445 "rfs4_op_putpubfh", 446 "rfs4_op_putrootfh", 447 "rfs4_op_read", 448 "rfs4_op_readdir", 449 "rfs4_op_readlink", 450 "rfs4_op_remove", 451 "rfs4_op_rename", 452 "rfs4_op_renew", 453 "rfs4_op_restorefh", 454 "rfs4_op_savefh", 455 "rfs4_op_secinfo", 456 "rfs4_op_setattr", 457 "rfs4_op_setclientid", 458 "rfs4_op_setclient_confirm", 459 "rfs4_op_verify", 460 "rfs4_op_write", 461 "rfs4_op_release_lockowner", 462 "rfs4_op_illegal" 463 }; 464 #endif 465 466 void rfs4_ss_chkclid(rfs4_client_t *); 467 468 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 469 470 extern void rfs4_free_fs_locations4(fs_locations4 *); 471 472 #ifdef nextdp 473 #undef nextdp 474 #endif 475 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 476 477 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 478 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 479 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 480 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 481 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 482 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 483 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 484 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 485 NULL, NULL 486 }; 487 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 488 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 489 VOPNAME_READ, { .femop_read = deleg_wr_read }, 490 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 491 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 492 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 493 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 494 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 495 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 496 NULL, NULL 497 }; 498 499 int 500 rfs4_srvrinit(void) 501 { 502 timespec32_t verf; 503 int error; 504 extern void rfs4_attr_init(); 505 extern krwlock_t rfs4_deleg_policy_lock; 506 507 /* 508 * The following algorithm attempts to find a unique verifier 509 * to be used as the write verifier returned from the server 510 * to the client. It is important that this verifier change 511 * whenever the server reboots. Of secondary importance, it 512 * is important for the verifier to be unique between two 513 * different servers. 514 * 515 * Thus, an attempt is made to use the system hostid and the 516 * current time in seconds when the nfssrv kernel module is 517 * loaded. It is assumed that an NFS server will not be able 518 * to boot and then to reboot in less than a second. If the 519 * hostid has not been set, then the current high resolution 520 * time is used. This will ensure different verifiers each 521 * time the server reboots and minimize the chances that two 522 * different servers will have the same verifier. 523 * XXX - this is broken on LP64 kernels. 524 */ 525 verf.tv_sec = (time_t)zone_get_hostid(NULL); 526 if (verf.tv_sec != 0) { 527 verf.tv_nsec = gethrestime_sec(); 528 } else { 529 timespec_t tverf; 530 531 gethrestime(&tverf); 532 verf.tv_sec = (time_t)tverf.tv_sec; 533 verf.tv_nsec = tverf.tv_nsec; 534 } 535 536 Write4verf = *(uint64_t *)&verf; 537 538 rfs4_attr_init(); 539 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 540 541 /* Used to manage create/destroy of server state */ 542 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 543 544 /* Used to manage access to server instance linked list */ 545 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 546 547 /* Used to manage access to rfs4_deleg_policy */ 548 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 549 550 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 551 if (error != 0) { 552 rfs4_disable_delegation(); 553 } else { 554 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 555 &deleg_wrops); 556 if (error != 0) { 557 rfs4_disable_delegation(); 558 fem_free(deleg_rdops); 559 } 560 } 561 562 nfs4_srv_caller_id = fs_new_caller_id(); 563 564 lockt_sysid = lm_alloc_sysidt(); 565 566 vsd_create(&nfs4_srv_vkey, NULL); 567 568 return (0); 569 } 570 571 void 572 rfs4_srvrfini(void) 573 { 574 extern krwlock_t rfs4_deleg_policy_lock; 575 576 if (lockt_sysid != LM_NOSYSID) { 577 lm_free_sysidt(lockt_sysid); 578 lockt_sysid = LM_NOSYSID; 579 } 580 581 mutex_destroy(&rfs4_deleg_lock); 582 mutex_destroy(&rfs4_state_lock); 583 rw_destroy(&rfs4_deleg_policy_lock); 584 585 fem_free(deleg_rdops); 586 fem_free(deleg_wrops); 587 } 588 589 void 590 rfs4_init_compound_state(struct compound_state *cs) 591 { 592 bzero(cs, sizeof (*cs)); 593 cs->cont = TRUE; 594 cs->access = CS_ACCESS_DENIED; 595 cs->deleg = FALSE; 596 cs->mandlock = FALSE; 597 cs->fh.nfs_fh4_val = cs->fhbuf; 598 } 599 600 void 601 rfs4_grace_start(rfs4_servinst_t *sip) 602 { 603 rw_enter(&sip->rwlock, RW_WRITER); 604 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 605 sip->grace_period = rfs4_grace_period; 606 rw_exit(&sip->rwlock); 607 } 608 609 /* 610 * returns true if the instance's grace period has never been started 611 */ 612 int 613 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 614 { 615 time_t start_time; 616 617 rw_enter(&sip->rwlock, RW_READER); 618 start_time = sip->start_time; 619 rw_exit(&sip->rwlock); 620 621 return (start_time == 0); 622 } 623 624 /* 625 * Indicates if server instance is within the 626 * grace period. 627 */ 628 int 629 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 630 { 631 time_t grace_expiry; 632 633 rw_enter(&sip->rwlock, RW_READER); 634 grace_expiry = sip->start_time + sip->grace_period; 635 rw_exit(&sip->rwlock); 636 637 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 638 } 639 640 int 641 rfs4_clnt_in_grace(rfs4_client_t *cp) 642 { 643 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 644 645 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 646 } 647 648 /* 649 * reset all currently active grace periods 650 */ 651 void 652 rfs4_grace_reset_all(void) 653 { 654 rfs4_servinst_t *sip; 655 656 mutex_enter(&rfs4_servinst_lock); 657 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 658 if (rfs4_servinst_in_grace(sip)) 659 rfs4_grace_start(sip); 660 mutex_exit(&rfs4_servinst_lock); 661 } 662 663 /* 664 * start any new instances' grace periods 665 */ 666 void 667 rfs4_grace_start_new(void) 668 { 669 rfs4_servinst_t *sip; 670 671 mutex_enter(&rfs4_servinst_lock); 672 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 673 if (rfs4_servinst_grace_new(sip)) 674 rfs4_grace_start(sip); 675 mutex_exit(&rfs4_servinst_lock); 676 } 677 678 static rfs4_dss_path_t * 679 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 680 { 681 size_t len; 682 rfs4_dss_path_t *dss_path; 683 684 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 685 686 /* 687 * Take a copy of the string, since the original may be overwritten. 688 * Sadly, no strdup() in the kernel. 689 */ 690 /* allow for NUL */ 691 len = strlen(path) + 1; 692 dss_path->path = kmem_alloc(len, KM_SLEEP); 693 (void) strlcpy(dss_path->path, path, len); 694 695 /* associate with servinst */ 696 dss_path->sip = sip; 697 dss_path->index = index; 698 699 /* 700 * Add to list of served paths. 701 * No locking required, as we're only ever called at startup. 702 */ 703 if (rfs4_dss_pathlist == NULL) { 704 /* this is the first dss_path_t */ 705 706 /* needed for insque/remque */ 707 dss_path->next = dss_path->prev = dss_path; 708 709 rfs4_dss_pathlist = dss_path; 710 } else { 711 insque(dss_path, rfs4_dss_pathlist); 712 } 713 714 return (dss_path); 715 } 716 717 /* 718 * Create a new server instance, and make it the currently active instance. 719 * Note that starting the grace period too early will reduce the clients' 720 * recovery window. 721 */ 722 void 723 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 724 { 725 unsigned i; 726 rfs4_servinst_t *sip; 727 rfs4_oldstate_t *oldstate; 728 729 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 730 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 731 732 sip->start_time = (time_t)0; 733 sip->grace_period = (time_t)0; 734 sip->next = NULL; 735 sip->prev = NULL; 736 737 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 738 /* 739 * This initial dummy entry is required to setup for insque/remque. 740 * It must be skipped over whenever the list is traversed. 741 */ 742 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 743 /* insque/remque require initial list entry to be self-terminated */ 744 oldstate->next = oldstate; 745 oldstate->prev = oldstate; 746 sip->oldstate = oldstate; 747 748 749 sip->dss_npaths = dss_npaths; 750 sip->dss_paths = kmem_alloc(dss_npaths * 751 sizeof (rfs4_dss_path_t *), KM_SLEEP); 752 753 for (i = 0; i < dss_npaths; i++) { 754 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 755 } 756 757 mutex_enter(&rfs4_servinst_lock); 758 if (rfs4_cur_servinst != NULL) { 759 /* add to linked list */ 760 sip->prev = rfs4_cur_servinst; 761 rfs4_cur_servinst->next = sip; 762 } 763 if (start_grace) 764 rfs4_grace_start(sip); 765 /* make the new instance "current" */ 766 rfs4_cur_servinst = sip; 767 768 mutex_exit(&rfs4_servinst_lock); 769 } 770 771 /* 772 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 773 * all instances directly. 774 */ 775 void 776 rfs4_servinst_destroy_all(void) 777 { 778 rfs4_servinst_t *sip, *prev, *current; 779 #ifdef DEBUG 780 int n = 0; 781 #endif 782 783 mutex_enter(&rfs4_servinst_lock); 784 ASSERT(rfs4_cur_servinst != NULL); 785 current = rfs4_cur_servinst; 786 rfs4_cur_servinst = NULL; 787 for (sip = current; sip != NULL; sip = prev) { 788 prev = sip->prev; 789 rw_destroy(&sip->rwlock); 790 if (sip->oldstate) 791 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 792 if (sip->dss_paths) 793 kmem_free(sip->dss_paths, 794 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 795 kmem_free(sip, sizeof (rfs4_servinst_t)); 796 #ifdef DEBUG 797 n++; 798 #endif 799 } 800 mutex_exit(&rfs4_servinst_lock); 801 } 802 803 /* 804 * Assign the current server instance to a client_t. 805 * Should be called with cp->rc_dbe held. 806 */ 807 void 808 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 809 { 810 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 811 812 /* 813 * The lock ensures that if the current instance is in the process 814 * of changing, we will see the new one. 815 */ 816 mutex_enter(&rfs4_servinst_lock); 817 cp->rc_server_instance = sip; 818 mutex_exit(&rfs4_servinst_lock); 819 } 820 821 rfs4_servinst_t * 822 rfs4_servinst(rfs4_client_t *cp) 823 { 824 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 825 826 return (cp->rc_server_instance); 827 } 828 829 /* ARGSUSED */ 830 static void 831 nullfree(caddr_t resop) 832 { 833 } 834 835 /* 836 * This is a fall-through for invalid or not implemented (yet) ops 837 */ 838 /* ARGSUSED */ 839 static void 840 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 841 struct compound_state *cs) 842 { 843 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 844 } 845 846 /* 847 * Check if the security flavor, nfsnum, is in the flavor_list. 848 */ 849 bool_t 850 in_flavor_list(int nfsnum, int *flavor_list, int count) 851 { 852 int i; 853 854 for (i = 0; i < count; i++) { 855 if (nfsnum == flavor_list[i]) 856 return (TRUE); 857 } 858 return (FALSE); 859 } 860 861 /* 862 * Used by rfs4_op_secinfo to get the security information from the 863 * export structure associated with the component. 864 */ 865 /* ARGSUSED */ 866 static nfsstat4 867 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 868 { 869 int error, different_export = 0; 870 vnode_t *dvp, *vp, *tvp; 871 struct exportinfo *exi = NULL; 872 fid_t fid; 873 uint_t count, i; 874 secinfo4 *resok_val; 875 struct secinfo *secp; 876 seconfig_t *si; 877 bool_t did_traverse = FALSE; 878 int dotdot, walk; 879 880 dvp = cs->vp; 881 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 882 883 /* 884 * If dotdotting, then need to check whether it's above the 885 * root of a filesystem, or above an export point. 886 */ 887 if (dotdot) { 888 889 /* 890 * If dotdotting at the root of a filesystem, then 891 * need to traverse back to the mounted-on filesystem 892 * and do the dotdot lookup there. 893 */ 894 if (cs->vp->v_flag & VROOT) { 895 896 /* 897 * If at the system root, then can 898 * go up no further. 899 */ 900 if (VN_CMP(dvp, rootdir)) 901 return (puterrno4(ENOENT)); 902 903 /* 904 * Traverse back to the mounted-on filesystem 905 */ 906 dvp = untraverse(cs->vp); 907 908 /* 909 * Set the different_export flag so we remember 910 * to pick up a new exportinfo entry for 911 * this new filesystem. 912 */ 913 different_export = 1; 914 } else { 915 916 /* 917 * If dotdotting above an export point then set 918 * the different_export to get new export info. 919 */ 920 different_export = nfs_exported(cs->exi, cs->vp); 921 } 922 } 923 924 /* 925 * Get the vnode for the component "nm". 926 */ 927 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 928 NULL, NULL, NULL); 929 if (error) 930 return (puterrno4(error)); 931 932 /* 933 * If the vnode is in a pseudo filesystem, or if the security flavor 934 * used in the request is valid but not an explicitly shared flavor, 935 * or the access bit indicates that this is a limited access, 936 * check whether this vnode is visible. 937 */ 938 if (!different_export && 939 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 940 cs->access & CS_ACCESS_LIMITED)) { 941 if (! nfs_visible(cs->exi, vp, &different_export)) { 942 VN_RELE(vp); 943 return (puterrno4(ENOENT)); 944 } 945 } 946 947 /* 948 * If it's a mountpoint, then traverse it. 949 */ 950 if (vn_ismntpt(vp)) { 951 tvp = vp; 952 if ((error = traverse(&tvp)) != 0) { 953 VN_RELE(vp); 954 return (puterrno4(error)); 955 } 956 /* remember that we had to traverse mountpoint */ 957 did_traverse = TRUE; 958 vp = tvp; 959 different_export = 1; 960 } else if (vp->v_vfsp != dvp->v_vfsp) { 961 /* 962 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 963 * then vp is probably an LOFS object. We don't need the 964 * realvp, we just need to know that we might have crossed 965 * a server fs boundary and need to call checkexport4. 966 * (LOFS lookup hides server fs mountpoints, and actually calls 967 * traverse) 968 */ 969 different_export = 1; 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 1178 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1179 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1180 MAXPATHLEN + 1); 1181 1182 if (name == NULL) { 1183 *cs->statusp = resp->status = NFS4ERR_INVAL; 1184 kmem_free(nm, len); 1185 goto out; 1186 } 1187 1188 1189 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1190 1191 if (name != nm) 1192 kmem_free(name, MAXPATHLEN + 1); 1193 kmem_free(nm, len); 1194 1195 out: 1196 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1197 SECINFO4res *, resp); 1198 } 1199 1200 /* 1201 * Free SECINFO result. 1202 */ 1203 /* ARGSUSED */ 1204 static void 1205 rfs4_op_secinfo_free(nfs_resop4 *resop) 1206 { 1207 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1208 int count, i; 1209 secinfo4 *resok_val; 1210 1211 /* If this is not an Ok result, nothing to free. */ 1212 if (resp->status != NFS4_OK) { 1213 return; 1214 } 1215 1216 count = resp->SECINFO4resok_len; 1217 resok_val = resp->SECINFO4resok_val; 1218 1219 for (i = 0; i < count; i++) { 1220 if (resok_val[i].flavor == RPCSEC_GSS) { 1221 rpcsec_gss_info *info; 1222 1223 info = &resok_val[i].flavor_info; 1224 kmem_free(info->oid.sec_oid4_val, 1225 info->oid.sec_oid4_len); 1226 } 1227 } 1228 kmem_free(resok_val, count * sizeof (secinfo4)); 1229 resp->SECINFO4resok_len = 0; 1230 resp->SECINFO4resok_val = NULL; 1231 } 1232 1233 /* ARGSUSED */ 1234 static void 1235 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1236 struct compound_state *cs) 1237 { 1238 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1239 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1240 int error; 1241 vnode_t *vp; 1242 struct vattr va; 1243 int checkwriteperm; 1244 cred_t *cr = cs->cr; 1245 bslabel_t *clabel, *slabel; 1246 ts_label_t *tslabel; 1247 boolean_t admin_low_client; 1248 1249 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1250 ACCESS4args *, args); 1251 1252 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1253 if (cs->access == CS_ACCESS_DENIED) { 1254 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1255 goto out; 1256 } 1257 #endif 1258 if (cs->vp == NULL) { 1259 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1260 goto out; 1261 } 1262 1263 ASSERT(cr != NULL); 1264 1265 vp = cs->vp; 1266 1267 /* 1268 * If the file system is exported read only, it is not appropriate 1269 * to check write permissions for regular files and directories. 1270 * Special files are interpreted by the client, so the underlying 1271 * permissions are sent back to the client for interpretation. 1272 */ 1273 if (rdonly4(cs->exi, cs->vp, req) && 1274 (vp->v_type == VREG || vp->v_type == VDIR)) 1275 checkwriteperm = 0; 1276 else 1277 checkwriteperm = 1; 1278 1279 /* 1280 * XXX 1281 * We need the mode so that we can correctly determine access 1282 * permissions relative to a mandatory lock file. Access to 1283 * mandatory lock files is denied on the server, so it might 1284 * as well be reflected to the server during the open. 1285 */ 1286 va.va_mask = AT_MODE; 1287 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1288 if (error) { 1289 *cs->statusp = resp->status = puterrno4(error); 1290 goto out; 1291 } 1292 resp->access = 0; 1293 resp->supported = 0; 1294 1295 if (is_system_labeled()) { 1296 ASSERT(req->rq_label != NULL); 1297 clabel = req->rq_label; 1298 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1299 "got client label from request(1)", 1300 struct svc_req *, req); 1301 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1302 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1303 *cs->statusp = resp->status = puterrno4(EACCES); 1304 goto out; 1305 } 1306 slabel = label2bslabel(tslabel); 1307 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1308 char *, "got server label(1) for vp(2)", 1309 bslabel_t *, slabel, vnode_t *, vp); 1310 1311 admin_low_client = B_FALSE; 1312 } else 1313 admin_low_client = B_TRUE; 1314 } 1315 1316 if (args->access & ACCESS4_READ) { 1317 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1318 if (!error && !MANDLOCK(vp, va.va_mode) && 1319 (!is_system_labeled() || admin_low_client || 1320 bldominates(clabel, slabel))) 1321 resp->access |= ACCESS4_READ; 1322 resp->supported |= ACCESS4_READ; 1323 } 1324 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1325 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1326 if (!error && (!is_system_labeled() || admin_low_client || 1327 bldominates(clabel, slabel))) 1328 resp->access |= ACCESS4_LOOKUP; 1329 resp->supported |= ACCESS4_LOOKUP; 1330 } 1331 if (checkwriteperm && 1332 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1333 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1334 if (!error && !MANDLOCK(vp, va.va_mode) && 1335 (!is_system_labeled() || admin_low_client || 1336 blequal(clabel, slabel))) 1337 resp->access |= 1338 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1339 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1340 } 1341 1342 if (checkwriteperm && 1343 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1344 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1345 if (!error && (!is_system_labeled() || admin_low_client || 1346 blequal(clabel, slabel))) 1347 resp->access |= ACCESS4_DELETE; 1348 resp->supported |= ACCESS4_DELETE; 1349 } 1350 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1351 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1352 if (!error && !MANDLOCK(vp, va.va_mode) && 1353 (!is_system_labeled() || admin_low_client || 1354 bldominates(clabel, slabel))) 1355 resp->access |= ACCESS4_EXECUTE; 1356 resp->supported |= ACCESS4_EXECUTE; 1357 } 1358 1359 if (is_system_labeled() && !admin_low_client) 1360 label_rele(tslabel); 1361 1362 *cs->statusp = resp->status = NFS4_OK; 1363 out: 1364 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1365 ACCESS4res *, resp); 1366 } 1367 1368 /* ARGSUSED */ 1369 static void 1370 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1371 struct compound_state *cs) 1372 { 1373 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1374 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1375 int error; 1376 vnode_t *vp = cs->vp; 1377 cred_t *cr = cs->cr; 1378 vattr_t va; 1379 1380 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1381 COMMIT4args *, args); 1382 1383 if (vp == NULL) { 1384 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1385 goto out; 1386 } 1387 if (cs->access == CS_ACCESS_DENIED) { 1388 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1389 goto out; 1390 } 1391 1392 if (args->offset + args->count < args->offset) { 1393 *cs->statusp = resp->status = NFS4ERR_INVAL; 1394 goto out; 1395 } 1396 1397 va.va_mask = AT_UID; 1398 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1399 1400 /* 1401 * If we can't get the attributes, then we can't do the 1402 * right access checking. So, we'll fail the request. 1403 */ 1404 if (error) { 1405 *cs->statusp = resp->status = puterrno4(error); 1406 goto out; 1407 } 1408 if (rdonly4(cs->exi, cs->vp, req)) { 1409 *cs->statusp = resp->status = NFS4ERR_ROFS; 1410 goto out; 1411 } 1412 1413 if (vp->v_type != VREG) { 1414 if (vp->v_type == VDIR) 1415 resp->status = NFS4ERR_ISDIR; 1416 else 1417 resp->status = NFS4ERR_INVAL; 1418 *cs->statusp = resp->status; 1419 goto out; 1420 } 1421 1422 if (crgetuid(cr) != va.va_uid && 1423 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1424 *cs->statusp = resp->status = puterrno4(error); 1425 goto out; 1426 } 1427 1428 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1429 1430 if (error) { 1431 *cs->statusp = resp->status = puterrno4(error); 1432 goto out; 1433 } 1434 1435 *cs->statusp = resp->status = NFS4_OK; 1436 resp->writeverf = Write4verf; 1437 out: 1438 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1439 COMMIT4res *, resp); 1440 } 1441 1442 /* 1443 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1444 * was completed. It does the nfsv4 create for special files. 1445 */ 1446 /* ARGSUSED */ 1447 static vnode_t * 1448 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1449 struct compound_state *cs, vattr_t *vap, char *nm) 1450 { 1451 int error; 1452 cred_t *cr = cs->cr; 1453 vnode_t *dvp = cs->vp; 1454 vnode_t *vp = NULL; 1455 int mode; 1456 enum vcexcl excl; 1457 1458 switch (args->type) { 1459 case NF4CHR: 1460 case NF4BLK: 1461 if (secpolicy_sys_devices(cr) != 0) { 1462 *cs->statusp = resp->status = NFS4ERR_PERM; 1463 return (NULL); 1464 } 1465 if (args->type == NF4CHR) 1466 vap->va_type = VCHR; 1467 else 1468 vap->va_type = VBLK; 1469 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1470 args->ftype4_u.devdata.specdata2); 1471 vap->va_mask |= AT_RDEV; 1472 break; 1473 case NF4SOCK: 1474 vap->va_type = VSOCK; 1475 break; 1476 case NF4FIFO: 1477 vap->va_type = VFIFO; 1478 break; 1479 default: 1480 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1481 return (NULL); 1482 } 1483 1484 /* 1485 * Must specify the mode. 1486 */ 1487 if (!(vap->va_mask & AT_MODE)) { 1488 *cs->statusp = resp->status = NFS4ERR_INVAL; 1489 return (NULL); 1490 } 1491 1492 excl = EXCL; 1493 1494 mode = 0; 1495 1496 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1497 if (error) { 1498 *cs->statusp = resp->status = puterrno4(error); 1499 return (NULL); 1500 } 1501 return (vp); 1502 } 1503 1504 /* 1505 * nfsv4 create is used to create non-regular files. For regular files, 1506 * use nfsv4 open. 1507 */ 1508 /* ARGSUSED */ 1509 static void 1510 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1511 struct compound_state *cs) 1512 { 1513 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1514 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1515 int error; 1516 struct vattr bva, iva, iva2, ava, *vap; 1517 cred_t *cr = cs->cr; 1518 vnode_t *dvp = cs->vp; 1519 vnode_t *vp = NULL; 1520 vnode_t *realvp; 1521 char *nm, *lnm; 1522 uint_t len, llen; 1523 int syncval = 0; 1524 struct nfs4_svgetit_arg sarg; 1525 struct nfs4_ntov_table ntov; 1526 struct statvfs64 sb; 1527 nfsstat4 status; 1528 struct sockaddr *ca; 1529 char *name = NULL; 1530 char *lname = NULL; 1531 1532 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1533 CREATE4args *, args); 1534 1535 resp->attrset = 0; 1536 1537 if (dvp == NULL) { 1538 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1539 goto out; 1540 } 1541 1542 /* 1543 * If there is an unshared filesystem mounted on this vnode, 1544 * do not allow to create an object in this directory. 1545 */ 1546 if (vn_ismntpt(dvp)) { 1547 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1548 goto out; 1549 } 1550 1551 /* Verify that type is correct */ 1552 switch (args->type) { 1553 case NF4LNK: 1554 case NF4BLK: 1555 case NF4CHR: 1556 case NF4SOCK: 1557 case NF4FIFO: 1558 case NF4DIR: 1559 break; 1560 default: 1561 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1562 goto out; 1563 }; 1564 1565 if (cs->access == CS_ACCESS_DENIED) { 1566 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1567 goto out; 1568 } 1569 if (dvp->v_type != VDIR) { 1570 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1571 goto out; 1572 } 1573 if (!utf8_dir_verify(&args->objname)) { 1574 *cs->statusp = resp->status = NFS4ERR_INVAL; 1575 goto out; 1576 } 1577 1578 if (rdonly4(cs->exi, cs->vp, req)) { 1579 *cs->statusp = resp->status = NFS4ERR_ROFS; 1580 goto out; 1581 } 1582 1583 /* 1584 * Name of newly created object 1585 */ 1586 nm = utf8_to_fn(&args->objname, &len, NULL); 1587 if (nm == NULL) { 1588 *cs->statusp = resp->status = NFS4ERR_INVAL; 1589 goto out; 1590 } 1591 1592 if (len > MAXNAMELEN) { 1593 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1594 kmem_free(nm, len); 1595 goto out; 1596 } 1597 1598 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1599 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1600 MAXPATHLEN + 1); 1601 1602 if (name == NULL) { 1603 *cs->statusp = resp->status = NFS4ERR_INVAL; 1604 kmem_free(nm, len); 1605 goto out; 1606 } 1607 1608 resp->attrset = 0; 1609 1610 sarg.sbp = &sb; 1611 sarg.is_referral = B_FALSE; 1612 nfs4_ntov_table_init(&ntov); 1613 1614 status = do_rfs4_set_attrs(&resp->attrset, 1615 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1616 1617 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1618 status = NFS4ERR_INVAL; 1619 1620 if (status != NFS4_OK) { 1621 *cs->statusp = resp->status = status; 1622 if (name != nm) 1623 kmem_free(name, MAXPATHLEN + 1); 1624 kmem_free(nm, len); 1625 nfs4_ntov_table_free(&ntov, &sarg); 1626 resp->attrset = 0; 1627 goto out; 1628 } 1629 1630 /* Get "before" change value */ 1631 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1632 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1633 if (error) { 1634 *cs->statusp = resp->status = puterrno4(error); 1635 if (name != nm) 1636 kmem_free(name, MAXPATHLEN + 1); 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 the default initial values for attributes when the parent 1648 * directory does not have the VSUID/VSGID bit set and they have 1649 * not been specified in createattrs. 1650 */ 1651 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1652 vap->va_uid = crgetuid(cr); 1653 vap->va_mask |= AT_UID; 1654 } 1655 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1656 vap->va_gid = crgetgid(cr); 1657 vap->va_mask |= AT_GID; 1658 } 1659 1660 vap->va_mask |= AT_TYPE; 1661 switch (args->type) { 1662 case NF4DIR: 1663 vap->va_type = VDIR; 1664 if ((vap->va_mask & AT_MODE) == 0) { 1665 vap->va_mode = 0700; /* default: owner rwx only */ 1666 vap->va_mask |= AT_MODE; 1667 } 1668 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1669 if (error) 1670 break; 1671 1672 /* 1673 * Get the initial "after" sequence number, if it fails, 1674 * set to zero 1675 */ 1676 iva.va_mask = AT_SEQ; 1677 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1678 iva.va_seq = 0; 1679 break; 1680 case NF4LNK: 1681 vap->va_type = VLNK; 1682 if ((vap->va_mask & AT_MODE) == 0) { 1683 vap->va_mode = 0700; /* default: owner rwx only */ 1684 vap->va_mask |= AT_MODE; 1685 } 1686 1687 /* 1688 * symlink names must be treated as data 1689 */ 1690 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1691 1692 if (lnm == NULL) { 1693 *cs->statusp = resp->status = NFS4ERR_INVAL; 1694 if (name != nm) 1695 kmem_free(name, MAXPATHLEN + 1); 1696 kmem_free(nm, len); 1697 nfs4_ntov_table_free(&ntov, &sarg); 1698 resp->attrset = 0; 1699 goto out; 1700 } 1701 1702 if (llen > MAXPATHLEN) { 1703 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1704 if (name != nm) 1705 kmem_free(name, MAXPATHLEN + 1); 1706 kmem_free(nm, len); 1707 kmem_free(lnm, llen); 1708 nfs4_ntov_table_free(&ntov, &sarg); 1709 resp->attrset = 0; 1710 goto out; 1711 } 1712 1713 lname = nfscmd_convname(ca, cs->exi, lnm, 1714 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1715 1716 if (lname == NULL) { 1717 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1718 if (name != nm) 1719 kmem_free(name, MAXPATHLEN + 1); 1720 kmem_free(nm, len); 1721 kmem_free(lnm, llen); 1722 nfs4_ntov_table_free(&ntov, &sarg); 1723 resp->attrset = 0; 1724 goto out; 1725 } 1726 1727 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1728 if (lname != lnm) 1729 kmem_free(lname, MAXPATHLEN + 1); 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, name, &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, name); 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, struct svc_req *req, struct compound_state *cs) 2602 { 2603 int error; 2604 int different_export = 0; 2605 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2606 struct exportinfo *exi = NULL, *pre_exi = NULL; 2607 nfsstat4 stat; 2608 fid_t fid; 2609 int attrdir, dotdot, walk; 2610 bool_t is_newvp = FALSE; 2611 2612 if (cs->vp->v_flag & V_XATTRDIR) { 2613 attrdir = 1; 2614 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2615 } else { 2616 attrdir = 0; 2617 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2618 } 2619 2620 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2621 2622 /* 2623 * If dotdotting, then need to check whether it's 2624 * above the root of a filesystem, or above an 2625 * export point. 2626 */ 2627 if (dotdot) { 2628 2629 /* 2630 * If dotdotting at the root of a filesystem, then 2631 * need to traverse back to the mounted-on filesystem 2632 * and do the dotdot lookup there. 2633 */ 2634 if (cs->vp->v_flag & VROOT) { 2635 2636 /* 2637 * If at the system root, then can 2638 * go up no further. 2639 */ 2640 if (VN_CMP(cs->vp, rootdir)) 2641 return (puterrno4(ENOENT)); 2642 2643 /* 2644 * Traverse back to the mounted-on filesystem 2645 */ 2646 cs->vp = untraverse(cs->vp); 2647 2648 /* 2649 * Set the different_export flag so we remember 2650 * to pick up a new exportinfo entry for 2651 * this new filesystem. 2652 */ 2653 different_export = 1; 2654 } else { 2655 2656 /* 2657 * If dotdotting above an export point then set 2658 * the different_export to get new export info. 2659 */ 2660 different_export = nfs_exported(cs->exi, cs->vp); 2661 } 2662 } 2663 2664 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2665 NULL, NULL, NULL); 2666 if (error) 2667 return (puterrno4(error)); 2668 2669 /* 2670 * If the vnode is in a pseudo filesystem, check whether it is visible. 2671 * 2672 * XXX if the vnode is a symlink and it is not visible in 2673 * a pseudo filesystem, return ENOENT (not following symlink). 2674 * V4 client can not mount such symlink. This is a regression 2675 * from V2/V3. 2676 * 2677 * In the same exported filesystem, if the security flavor used 2678 * is not an explicitly shared flavor, limit the view to the visible 2679 * list entries only. This is not a WRONGSEC case because it's already 2680 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2681 */ 2682 if (!different_export && 2683 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2684 cs->access & CS_ACCESS_LIMITED)) { 2685 if (! nfs_visible(cs->exi, vp, &different_export)) { 2686 VN_RELE(vp); 2687 return (puterrno4(ENOENT)); 2688 } 2689 } 2690 2691 /* 2692 * If it's a mountpoint, then traverse it. 2693 */ 2694 if (vn_ismntpt(vp)) { 2695 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2696 pre_tvp = vp; /* save pre-traversed vnode */ 2697 2698 /* 2699 * hold pre_tvp to counteract rele by traverse. We will 2700 * need pre_tvp below if checkexport4 fails 2701 */ 2702 VN_HOLD(pre_tvp); 2703 tvp = vp; 2704 if ((error = traverse(&tvp)) != 0) { 2705 VN_RELE(vp); 2706 VN_RELE(pre_tvp); 2707 return (puterrno4(error)); 2708 } 2709 vp = tvp; 2710 different_export = 1; 2711 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2712 /* 2713 * The vfsp comparison is to handle the case where 2714 * a LOFS mount is shared. lo_lookup traverses mount points, 2715 * and NFS is unaware of local fs transistions because 2716 * v_vfsmountedhere isn't set. For this special LOFS case, 2717 * the dir and the obj returned by lookup will have different 2718 * vfs ptrs. 2719 */ 2720 different_export = 1; 2721 } 2722 2723 if (different_export) { 2724 2725 bzero(&fid, sizeof (fid)); 2726 fid.fid_len = MAXFIDSZ; 2727 error = vop_fid_pseudo(vp, &fid); 2728 if (error) { 2729 VN_RELE(vp); 2730 if (pre_tvp) 2731 VN_RELE(pre_tvp); 2732 return (puterrno4(error)); 2733 } 2734 2735 if (dotdot) 2736 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2737 else 2738 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2739 2740 if (exi == NULL) { 2741 if (pre_tvp) { 2742 /* 2743 * If this vnode is a mounted-on vnode, 2744 * but the mounted-on file system is not 2745 * exported, send back the filehandle for 2746 * the mounted-on vnode, not the root of 2747 * the mounted-on file system. 2748 */ 2749 VN_RELE(vp); 2750 vp = pre_tvp; 2751 exi = pre_exi; 2752 } else { 2753 VN_RELE(vp); 2754 return (puterrno4(EACCES)); 2755 } 2756 } else if (pre_tvp) { 2757 /* we're done with pre_tvp now. release extra hold */ 2758 VN_RELE(pre_tvp); 2759 } 2760 2761 cs->exi = exi; 2762 2763 /* 2764 * Now we do a checkauth4. The reason is that 2765 * this client/user may not have access to the new 2766 * exported file system, and if he does, 2767 * the client/user may be mapped to a different uid. 2768 * 2769 * We start with a new cr, because the checkauth4 done 2770 * in the PUT*FH operation over wrote the cred's uid, 2771 * gid, etc, and we want the real thing before calling 2772 * checkauth4() 2773 */ 2774 crfree(cs->cr); 2775 cs->cr = crdup(cs->basecr); 2776 2777 oldvp = cs->vp; 2778 cs->vp = vp; 2779 is_newvp = TRUE; 2780 2781 stat = call_checkauth4(cs, req); 2782 if (stat != NFS4_OK) { 2783 VN_RELE(cs->vp); 2784 cs->vp = oldvp; 2785 return (stat); 2786 } 2787 } 2788 2789 /* 2790 * After various NFS checks, do a label check on the path 2791 * component. The label on this path should either be the 2792 * global zone's label or a zone's label. We are only 2793 * interested in the zone's label because exported files 2794 * in global zone is accessible (though read-only) to 2795 * clients. The exportability/visibility check is already 2796 * done before reaching this code. 2797 */ 2798 if (is_system_labeled()) { 2799 bslabel_t *clabel; 2800 2801 ASSERT(req->rq_label != NULL); 2802 clabel = req->rq_label; 2803 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2804 "got client label from request(1)", struct svc_req *, req); 2805 2806 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2807 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2808 cs->exi)) { 2809 error = EACCES; 2810 goto err_out; 2811 } 2812 } else { 2813 /* 2814 * We grant access to admin_low label clients 2815 * only if the client is trusted, i.e. also 2816 * running Solaris Trusted Extension. 2817 */ 2818 struct sockaddr *ca; 2819 int addr_type; 2820 void *ipaddr; 2821 tsol_tpc_t *tp; 2822 2823 ca = (struct sockaddr *)svc_getrpccaller( 2824 req->rq_xprt)->buf; 2825 if (ca->sa_family == AF_INET) { 2826 addr_type = IPV4_VERSION; 2827 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2828 } else if (ca->sa_family == AF_INET6) { 2829 addr_type = IPV6_VERSION; 2830 ipaddr = &((struct sockaddr_in6 *) 2831 ca)->sin6_addr; 2832 } 2833 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2834 if (tp == NULL || tp->tpc_tp.tp_doi != 2835 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2836 SUN_CIPSO) { 2837 if (tp != NULL) 2838 TPC_RELE(tp); 2839 error = EACCES; 2840 goto err_out; 2841 } 2842 TPC_RELE(tp); 2843 } 2844 } 2845 2846 error = makefh4(&cs->fh, vp, cs->exi); 2847 2848 err_out: 2849 if (error) { 2850 if (is_newvp) { 2851 VN_RELE(cs->vp); 2852 cs->vp = oldvp; 2853 } else 2854 VN_RELE(vp); 2855 return (puterrno4(error)); 2856 } 2857 2858 if (!is_newvp) { 2859 if (cs->vp) 2860 VN_RELE(cs->vp); 2861 cs->vp = vp; 2862 } else if (oldvp) 2863 VN_RELE(oldvp); 2864 2865 /* 2866 * if did lookup on attrdir and didn't lookup .., set named 2867 * attr fh flag 2868 */ 2869 if (attrdir && ! dotdot) 2870 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2871 2872 /* Assume false for now, open proc will set this */ 2873 cs->mandlock = FALSE; 2874 2875 return (NFS4_OK); 2876 } 2877 2878 /* ARGSUSED */ 2879 static void 2880 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2881 struct compound_state *cs) 2882 { 2883 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2884 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2885 char *nm; 2886 uint_t len; 2887 struct sockaddr *ca; 2888 char *name = NULL; 2889 2890 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2891 LOOKUP4args *, args); 2892 2893 if (cs->vp == NULL) { 2894 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2895 goto out; 2896 } 2897 2898 if (cs->vp->v_type == VLNK) { 2899 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2900 goto out; 2901 } 2902 2903 if (cs->vp->v_type != VDIR) { 2904 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2905 goto out; 2906 } 2907 2908 if (!utf8_dir_verify(&args->objname)) { 2909 *cs->statusp = resp->status = NFS4ERR_INVAL; 2910 goto out; 2911 } 2912 2913 nm = utf8_to_str(&args->objname, &len, NULL); 2914 if (nm == NULL) { 2915 *cs->statusp = resp->status = NFS4ERR_INVAL; 2916 goto out; 2917 } 2918 2919 if (len > MAXNAMELEN) { 2920 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2921 kmem_free(nm, len); 2922 goto out; 2923 } 2924 2925 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2926 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2927 MAXPATHLEN + 1); 2928 2929 if (name == NULL) { 2930 *cs->statusp = resp->status = NFS4ERR_INVAL; 2931 kmem_free(nm, len); 2932 goto out; 2933 } 2934 2935 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2936 2937 if (name != nm) 2938 kmem_free(name, MAXPATHLEN + 1); 2939 kmem_free(nm, len); 2940 2941 out: 2942 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2943 LOOKUP4res *, resp); 2944 } 2945 2946 /* ARGSUSED */ 2947 static void 2948 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2949 struct compound_state *cs) 2950 { 2951 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2952 2953 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2954 2955 if (cs->vp == NULL) { 2956 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2957 goto out; 2958 } 2959 2960 if (cs->vp->v_type != VDIR) { 2961 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2962 goto out; 2963 } 2964 2965 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2966 2967 /* 2968 * From NFSV4 Specification, LOOKUPP should not check for 2969 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2970 */ 2971 if (resp->status == NFS4ERR_WRONGSEC) { 2972 *cs->statusp = resp->status = NFS4_OK; 2973 } 2974 2975 out: 2976 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2977 LOOKUPP4res *, resp); 2978 } 2979 2980 2981 /*ARGSUSED2*/ 2982 static void 2983 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2984 struct compound_state *cs) 2985 { 2986 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2987 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2988 vnode_t *avp = NULL; 2989 int lookup_flags = LOOKUP_XATTR, error; 2990 int exp_ro = 0; 2991 2992 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2993 OPENATTR4args *, args); 2994 2995 if (cs->vp == NULL) { 2996 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2997 goto out; 2998 } 2999 3000 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3001 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3002 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3003 goto out; 3004 } 3005 3006 /* 3007 * If file system supports passing ACE mask to VOP_ACCESS then 3008 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3009 */ 3010 3011 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3012 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3013 V_ACE_MASK, cs->cr, NULL); 3014 else 3015 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3016 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3017 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3018 3019 if (error) { 3020 *cs->statusp = resp->status = puterrno4(EACCES); 3021 goto out; 3022 } 3023 3024 /* 3025 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3026 * the file system is exported read-only -- regardless of 3027 * createdir flag. Otherwise the attrdir would be created 3028 * (assuming server fs isn't mounted readonly locally). If 3029 * VOP_LOOKUP returns ENOENT in this case, the error will 3030 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3031 * because specfs has no VOP_LOOKUP op, so the macro would 3032 * return ENOSYS. EINVAL is returned by all (current) 3033 * Solaris file system implementations when any of their 3034 * restrictions are violated (xattr(dir) can't have xattrdir). 3035 * Returning NOTSUPP is more appropriate in this case 3036 * because the object will never be able to have an attrdir. 3037 */ 3038 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3039 lookup_flags |= CREATE_XATTR_DIR; 3040 3041 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3042 NULL, NULL, NULL); 3043 3044 if (error) { 3045 if (error == ENOENT && args->createdir && exp_ro) 3046 *cs->statusp = resp->status = puterrno4(EROFS); 3047 else if (error == EINVAL || error == ENOSYS) 3048 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3049 else 3050 *cs->statusp = resp->status = puterrno4(error); 3051 goto out; 3052 } 3053 3054 ASSERT(avp->v_flag & V_XATTRDIR); 3055 3056 error = makefh4(&cs->fh, avp, cs->exi); 3057 3058 if (error) { 3059 VN_RELE(avp); 3060 *cs->statusp = resp->status = puterrno4(error); 3061 goto out; 3062 } 3063 3064 VN_RELE(cs->vp); 3065 cs->vp = avp; 3066 3067 /* 3068 * There is no requirement for an attrdir fh flag 3069 * because the attrdir has a vnode flag to distinguish 3070 * it from regular (non-xattr) directories. The 3071 * FH4_ATTRDIR flag is set for future sanity checks. 3072 */ 3073 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3074 *cs->statusp = resp->status = NFS4_OK; 3075 3076 out: 3077 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3078 OPENATTR4res *, resp); 3079 } 3080 3081 static int 3082 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3083 caller_context_t *ct) 3084 { 3085 int error; 3086 int i; 3087 clock_t delaytime; 3088 3089 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3090 3091 /* 3092 * Don't block on mandatory locks. If this routine returns 3093 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3094 */ 3095 uio->uio_fmode = FNONBLOCK; 3096 3097 for (i = 0; i < rfs4_maxlock_tries; i++) { 3098 3099 3100 if (direction == FREAD) { 3101 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3102 error = VOP_READ(vp, uio, ioflag, cred, ct); 3103 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3104 } else { 3105 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3106 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3107 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3108 } 3109 3110 if (error != EAGAIN) 3111 break; 3112 3113 if (i < rfs4_maxlock_tries - 1) { 3114 delay(delaytime); 3115 delaytime *= 2; 3116 } 3117 } 3118 3119 return (error); 3120 } 3121 3122 /* ARGSUSED */ 3123 static void 3124 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3125 struct compound_state *cs) 3126 { 3127 READ4args *args = &argop->nfs_argop4_u.opread; 3128 READ4res *resp = &resop->nfs_resop4_u.opread; 3129 int error; 3130 int verror; 3131 vnode_t *vp; 3132 struct vattr va; 3133 struct iovec iov; 3134 struct uio uio; 3135 u_offset_t offset; 3136 bool_t *deleg = &cs->deleg; 3137 nfsstat4 stat; 3138 int in_crit = 0; 3139 mblk_t *mp = NULL; 3140 int alloc_err = 0; 3141 int rdma_used = 0; 3142 int loaned_buffers; 3143 caller_context_t ct; 3144 struct uio *uiop; 3145 3146 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3147 READ4args, args); 3148 3149 vp = cs->vp; 3150 if (vp == NULL) { 3151 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3152 goto out; 3153 } 3154 if (cs->access == CS_ACCESS_DENIED) { 3155 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3156 goto out; 3157 } 3158 3159 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3160 deleg, TRUE, &ct)) != NFS4_OK) { 3161 *cs->statusp = resp->status = stat; 3162 goto out; 3163 } 3164 3165 /* 3166 * Enter the critical region before calling VOP_RWLOCK 3167 * to avoid a deadlock with write requests. 3168 */ 3169 if (nbl_need_check(vp)) { 3170 nbl_start_crit(vp, RW_READER); 3171 in_crit = 1; 3172 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3173 &ct)) { 3174 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3175 goto out; 3176 } 3177 } 3178 3179 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3180 deleg, TRUE, &ct)) != NFS4_OK) { 3181 *cs->statusp = resp->status = stat; 3182 goto out; 3183 } 3184 3185 if (args->wlist) { 3186 if (args->count > clist_len(args->wlist)) { 3187 *cs->statusp = resp->status = NFS4ERR_INVAL; 3188 goto out; 3189 } 3190 rdma_used = 1; 3191 } 3192 3193 /* use loaned buffers for TCP */ 3194 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3195 3196 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3197 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3198 3199 /* 3200 * If we can't get the attributes, then we can't do the 3201 * right access checking. So, we'll fail the request. 3202 */ 3203 if (verror) { 3204 *cs->statusp = resp->status = puterrno4(verror); 3205 goto out; 3206 } 3207 3208 if (vp->v_type != VREG) { 3209 *cs->statusp = resp->status = 3210 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3211 goto out; 3212 } 3213 3214 if (crgetuid(cs->cr) != va.va_uid && 3215 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3216 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3217 *cs->statusp = resp->status = puterrno4(error); 3218 goto out; 3219 } 3220 3221 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3222 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3223 goto out; 3224 } 3225 3226 offset = args->offset; 3227 if (offset >= va.va_size) { 3228 *cs->statusp = resp->status = NFS4_OK; 3229 resp->eof = TRUE; 3230 resp->data_len = 0; 3231 resp->data_val = NULL; 3232 resp->mblk = NULL; 3233 /* RDMA */ 3234 resp->wlist = args->wlist; 3235 resp->wlist_len = resp->data_len; 3236 *cs->statusp = resp->status = NFS4_OK; 3237 if (resp->wlist) 3238 clist_zero_len(resp->wlist); 3239 goto out; 3240 } 3241 3242 if (args->count == 0) { 3243 *cs->statusp = resp->status = NFS4_OK; 3244 resp->eof = FALSE; 3245 resp->data_len = 0; 3246 resp->data_val = NULL; 3247 resp->mblk = NULL; 3248 /* RDMA */ 3249 resp->wlist = args->wlist; 3250 resp->wlist_len = resp->data_len; 3251 if (resp->wlist) 3252 clist_zero_len(resp->wlist); 3253 goto out; 3254 } 3255 3256 /* 3257 * Do not allocate memory more than maximum allowed 3258 * transfer size 3259 */ 3260 if (args->count > rfs4_tsize(req)) 3261 args->count = rfs4_tsize(req); 3262 3263 if (loaned_buffers) { 3264 uiop = (uio_t *)rfs_setup_xuio(vp); 3265 ASSERT(uiop != NULL); 3266 uiop->uio_segflg = UIO_SYSSPACE; 3267 uiop->uio_loffset = args->offset; 3268 uiop->uio_resid = args->count; 3269 3270 /* Jump to do the read if successful */ 3271 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3272 /* 3273 * Need to hold the vnode until after VOP_RETZCBUF() 3274 * is called. 3275 */ 3276 VN_HOLD(vp); 3277 goto doio_read; 3278 } 3279 3280 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3281 uiop->uio_loffset, int, uiop->uio_resid); 3282 3283 uiop->uio_extflg = 0; 3284 3285 /* failure to setup for zero copy */ 3286 rfs_free_xuio((void *)uiop); 3287 loaned_buffers = 0; 3288 } 3289 3290 /* 3291 * If returning data via RDMA Write, then grab the chunk list. If we 3292 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3293 */ 3294 if (rdma_used) { 3295 mp = NULL; 3296 (void) rdma_get_wchunk(req, &iov, args->wlist); 3297 } else { 3298 /* 3299 * mp will contain the data to be sent out in the read reply. 3300 * It will be freed after the reply has been sent. Let's 3301 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3302 * the call to xdrmblk_putmblk() never fails. If the first 3303 * alloc of the requested size fails, then decrease the size to 3304 * something more reasonable and wait for the allocation to 3305 * occur. 3306 */ 3307 mp = allocb(RNDUP(args->count), BPRI_MED); 3308 if (mp == NULL) { 3309 if (args->count > MAXBSIZE) 3310 args->count = MAXBSIZE; 3311 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3312 STR_NOSIG, &alloc_err); 3313 } 3314 ASSERT(mp != NULL); 3315 ASSERT(alloc_err == 0); 3316 3317 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3318 iov.iov_len = args->count; 3319 } 3320 3321 uio.uio_iov = &iov; 3322 uio.uio_iovcnt = 1; 3323 uio.uio_segflg = UIO_SYSSPACE; 3324 uio.uio_extflg = UIO_COPY_CACHED; 3325 uio.uio_loffset = args->offset; 3326 uio.uio_resid = args->count; 3327 uiop = &uio; 3328 3329 doio_read: 3330 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3331 3332 va.va_mask = AT_SIZE; 3333 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3334 3335 if (error) { 3336 if (mp) 3337 freemsg(mp); 3338 *cs->statusp = resp->status = puterrno4(error); 3339 goto out; 3340 } 3341 3342 /* make mblk using zc buffers */ 3343 if (loaned_buffers) { 3344 mp = uio_to_mblk(uiop); 3345 ASSERT(mp != NULL); 3346 } 3347 3348 *cs->statusp = resp->status = NFS4_OK; 3349 3350 ASSERT(uiop->uio_resid >= 0); 3351 resp->data_len = args->count - uiop->uio_resid; 3352 if (mp) { 3353 resp->data_val = (char *)mp->b_datap->db_base; 3354 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3355 } else { 3356 resp->data_val = (caddr_t)iov.iov_base; 3357 } 3358 3359 resp->mblk = mp; 3360 3361 if (!verror && offset + resp->data_len == va.va_size) 3362 resp->eof = TRUE; 3363 else 3364 resp->eof = FALSE; 3365 3366 if (rdma_used) { 3367 if (!rdma_setup_read_data4(args, resp)) { 3368 *cs->statusp = resp->status = NFS4ERR_INVAL; 3369 } 3370 } else { 3371 resp->wlist = NULL; 3372 } 3373 3374 out: 3375 if (in_crit) 3376 nbl_end_crit(vp); 3377 3378 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3379 READ4res *, resp); 3380 } 3381 3382 static void 3383 rfs4_op_read_free(nfs_resop4 *resop) 3384 { 3385 READ4res *resp = &resop->nfs_resop4_u.opread; 3386 3387 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3388 freemsg(resp->mblk); 3389 resp->mblk = NULL; 3390 resp->data_val = NULL; 3391 resp->data_len = 0; 3392 } 3393 } 3394 3395 static void 3396 rfs4_op_readdir_free(nfs_resop4 * resop) 3397 { 3398 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3399 3400 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3401 freeb(resp->mblk); 3402 resp->mblk = NULL; 3403 resp->data_len = 0; 3404 } 3405 } 3406 3407 3408 /* ARGSUSED */ 3409 static void 3410 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3411 struct compound_state *cs) 3412 { 3413 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3414 int error; 3415 vnode_t *vp; 3416 struct exportinfo *exi, *sav_exi; 3417 nfs_fh4_fmt_t *fh_fmtp; 3418 3419 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3420 3421 if (cs->vp) { 3422 VN_RELE(cs->vp); 3423 cs->vp = NULL; 3424 } 3425 3426 if (cs->cr) 3427 crfree(cs->cr); 3428 3429 cs->cr = crdup(cs->basecr); 3430 3431 vp = exi_public->exi_vp; 3432 if (vp == NULL) { 3433 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3434 goto out; 3435 } 3436 3437 error = makefh4(&cs->fh, vp, exi_public); 3438 if (error != 0) { 3439 *cs->statusp = resp->status = puterrno4(error); 3440 goto out; 3441 } 3442 sav_exi = cs->exi; 3443 if (exi_public == exi_root) { 3444 /* 3445 * No filesystem is actually shared public, so we default 3446 * to exi_root. In this case, we must check whether root 3447 * is exported. 3448 */ 3449 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3450 3451 /* 3452 * if root filesystem is exported, the exportinfo struct that we 3453 * should use is what checkexport4 returns, because root_exi is 3454 * actually a mostly empty struct. 3455 */ 3456 exi = checkexport4(&fh_fmtp->fh4_fsid, 3457 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3458 cs->exi = ((exi != NULL) ? exi : exi_public); 3459 } else { 3460 /* 3461 * it's a properly shared filesystem 3462 */ 3463 cs->exi = exi_public; 3464 } 3465 3466 if (is_system_labeled()) { 3467 bslabel_t *clabel; 3468 3469 ASSERT(req->rq_label != NULL); 3470 clabel = req->rq_label; 3471 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3472 "got client label from request(1)", 3473 struct svc_req *, req); 3474 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3475 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3476 cs->exi)) { 3477 *cs->statusp = resp->status = 3478 NFS4ERR_SERVERFAULT; 3479 goto out; 3480 } 3481 } 3482 } 3483 3484 VN_HOLD(vp); 3485 cs->vp = vp; 3486 3487 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3488 VN_RELE(cs->vp); 3489 cs->vp = NULL; 3490 cs->exi = sav_exi; 3491 goto out; 3492 } 3493 3494 *cs->statusp = resp->status = NFS4_OK; 3495 out: 3496 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3497 PUTPUBFH4res *, resp); 3498 } 3499 3500 /* 3501 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3502 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3503 * or joe have restrictive search permissions, then we shouldn't let 3504 * the client get a file handle. This is easy to enforce. However, we 3505 * don't know what security flavor should be used until we resolve the 3506 * path name. Another complication is uid mapping. If root is 3507 * the user, then it will be mapped to the anonymous user by default, 3508 * but we won't know that till we've resolved the path name. And we won't 3509 * know what the anonymous user is. 3510 * Luckily, SECINFO is specified to take a full filename. 3511 * So what we will have to in rfs4_op_lookup is check that flavor of 3512 * the target object matches that of the request, and if root was the 3513 * caller, check for the root= and anon= options, and if necessary, 3514 * repeat the lookup using the right cred_t. But that's not done yet. 3515 */ 3516 /* ARGSUSED */ 3517 static void 3518 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3519 struct compound_state *cs) 3520 { 3521 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3522 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3523 nfs_fh4_fmt_t *fh_fmtp; 3524 3525 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3526 PUTFH4args *, args); 3527 3528 if (cs->vp) { 3529 VN_RELE(cs->vp); 3530 cs->vp = NULL; 3531 } 3532 3533 if (cs->cr) { 3534 crfree(cs->cr); 3535 cs->cr = NULL; 3536 } 3537 3538 3539 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3540 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3541 goto out; 3542 } 3543 3544 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3545 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3546 NULL); 3547 3548 if (cs->exi == NULL) { 3549 *cs->statusp = resp->status = NFS4ERR_STALE; 3550 goto out; 3551 } 3552 3553 cs->cr = crdup(cs->basecr); 3554 3555 ASSERT(cs->cr != NULL); 3556 3557 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3558 *cs->statusp = resp->status; 3559 goto out; 3560 } 3561 3562 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3563 VN_RELE(cs->vp); 3564 cs->vp = NULL; 3565 goto out; 3566 } 3567 3568 nfs_fh4_copy(&args->object, &cs->fh); 3569 *cs->statusp = resp->status = NFS4_OK; 3570 cs->deleg = FALSE; 3571 3572 out: 3573 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3574 PUTFH4res *, resp); 3575 } 3576 3577 /* ARGSUSED */ 3578 static void 3579 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3580 struct compound_state *cs) 3581 { 3582 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3583 int error; 3584 fid_t fid; 3585 struct exportinfo *exi, *sav_exi; 3586 3587 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3588 3589 if (cs->vp) { 3590 VN_RELE(cs->vp); 3591 cs->vp = NULL; 3592 } 3593 3594 if (cs->cr) 3595 crfree(cs->cr); 3596 3597 cs->cr = crdup(cs->basecr); 3598 3599 /* 3600 * Using rootdir, the system root vnode, 3601 * get its fid. 3602 */ 3603 bzero(&fid, sizeof (fid)); 3604 fid.fid_len = MAXFIDSZ; 3605 error = vop_fid_pseudo(rootdir, &fid); 3606 if (error != 0) { 3607 *cs->statusp = resp->status = puterrno4(error); 3608 goto out; 3609 } 3610 3611 /* 3612 * Then use the root fsid & fid it to find out if it's exported 3613 * 3614 * If the server root isn't exported directly, then 3615 * it should at least be a pseudo export based on 3616 * one or more exports further down in the server's 3617 * file tree. 3618 */ 3619 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3620 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3621 NFS4_DEBUG(rfs4_debug, 3622 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3623 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3624 goto out; 3625 } 3626 3627 /* 3628 * Now make a filehandle based on the root 3629 * export and root vnode. 3630 */ 3631 error = makefh4(&cs->fh, rootdir, exi); 3632 if (error != 0) { 3633 *cs->statusp = resp->status = puterrno4(error); 3634 goto out; 3635 } 3636 3637 sav_exi = cs->exi; 3638 cs->exi = exi; 3639 3640 VN_HOLD(rootdir); 3641 cs->vp = rootdir; 3642 3643 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3644 VN_RELE(rootdir); 3645 cs->vp = NULL; 3646 cs->exi = sav_exi; 3647 goto out; 3648 } 3649 3650 *cs->statusp = resp->status = NFS4_OK; 3651 cs->deleg = FALSE; 3652 out: 3653 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3654 PUTROOTFH4res *, resp); 3655 } 3656 3657 /* 3658 * A directory entry is a valid nfsv4 entry if 3659 * - it has a non-zero ino 3660 * - it is not a dot or dotdot name 3661 * - it is visible in a pseudo export or in a real export that can 3662 * only have a limited view. 3663 */ 3664 static bool_t 3665 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3666 int *expseudo, int check_visible) 3667 { 3668 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3669 *expseudo = 0; 3670 return (FALSE); 3671 } 3672 3673 if (! check_visible) { 3674 *expseudo = 0; 3675 return (TRUE); 3676 } 3677 3678 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3679 } 3680 3681 /* 3682 * set_rdattr_params sets up the variables used to manage what information 3683 * to get for each directory entry. 3684 */ 3685 static nfsstat4 3686 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3687 bitmap4 attrs, bool_t *need_to_lookup) 3688 { 3689 uint_t va_mask; 3690 nfsstat4 status; 3691 bitmap4 objbits; 3692 3693 status = bitmap4_to_attrmask(attrs, sargp); 3694 if (status != NFS4_OK) { 3695 /* 3696 * could not even figure attr mask 3697 */ 3698 return (status); 3699 } 3700 va_mask = sargp->vap->va_mask; 3701 3702 /* 3703 * dirent's d_ino is always correct value for mounted_on_fileid. 3704 * mntdfid_set is set once here, but mounted_on_fileid is 3705 * set in main dirent processing loop for each dirent. 3706 * The mntdfid_set is a simple optimization that lets the 3707 * server attr code avoid work when caller is readdir. 3708 */ 3709 sargp->mntdfid_set = TRUE; 3710 3711 /* 3712 * Lookup entry only if client asked for any of the following: 3713 * a) vattr attrs 3714 * b) vfs attrs 3715 * c) attrs w/per-object scope requested (change, filehandle, etc) 3716 * other than mounted_on_fileid (which we can take from dirent) 3717 */ 3718 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3719 3720 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3721 *need_to_lookup = TRUE; 3722 else 3723 *need_to_lookup = FALSE; 3724 3725 if (sargp->sbp == NULL) 3726 return (NFS4_OK); 3727 3728 /* 3729 * If filesystem attrs are requested, get them now from the 3730 * directory vp, as most entries will have same filesystem. The only 3731 * exception are mounted over entries but we handle 3732 * those as we go (XXX mounted over detection not yet implemented). 3733 */ 3734 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3735 status = bitmap4_get_sysattrs(sargp); 3736 sargp->vap->va_mask = va_mask; 3737 3738 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3739 /* 3740 * Failed to get filesystem attributes. 3741 * Return a rdattr_error for each entry, but don't fail. 3742 * However, don't get any obj-dependent attrs. 3743 */ 3744 sargp->rdattr_error = status; /* for rdattr_error */ 3745 *need_to_lookup = FALSE; 3746 /* 3747 * At least get fileid for regular readdir output 3748 */ 3749 sargp->vap->va_mask &= AT_NODEID; 3750 status = NFS4_OK; 3751 } 3752 3753 return (status); 3754 } 3755 3756 /* 3757 * readlink: args: CURRENT_FH. 3758 * res: status. If success - CURRENT_FH unchanged, return linktext. 3759 */ 3760 3761 /* ARGSUSED */ 3762 static void 3763 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3764 struct compound_state *cs) 3765 { 3766 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3767 int error; 3768 vnode_t *vp; 3769 struct iovec iov; 3770 struct vattr va; 3771 struct uio uio; 3772 char *data; 3773 struct sockaddr *ca; 3774 char *name = NULL; 3775 int is_referral; 3776 3777 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3778 3779 /* CURRENT_FH: directory */ 3780 vp = cs->vp; 3781 if (vp == NULL) { 3782 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3783 goto out; 3784 } 3785 3786 if (cs->access == CS_ACCESS_DENIED) { 3787 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3788 goto out; 3789 } 3790 3791 /* Is it a referral? */ 3792 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3793 3794 is_referral = 1; 3795 3796 } else { 3797 3798 is_referral = 0; 3799 3800 if (vp->v_type == VDIR) { 3801 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3802 goto out; 3803 } 3804 3805 if (vp->v_type != VLNK) { 3806 *cs->statusp = resp->status = NFS4ERR_INVAL; 3807 goto out; 3808 } 3809 3810 } 3811 3812 va.va_mask = AT_MODE; 3813 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3814 if (error) { 3815 *cs->statusp = resp->status = puterrno4(error); 3816 goto out; 3817 } 3818 3819 if (MANDLOCK(vp, va.va_mode)) { 3820 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3821 goto out; 3822 } 3823 3824 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3825 3826 if (is_referral) { 3827 char *s; 3828 size_t strsz; 3829 3830 /* Get an artificial symlink based on a referral */ 3831 s = build_symlink(vp, cs->cr, &strsz); 3832 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3833 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3834 vnode_t *, vp, char *, s); 3835 if (s == NULL) 3836 error = EINVAL; 3837 else { 3838 error = 0; 3839 (void) strlcpy(data, s, MAXPATHLEN + 1); 3840 kmem_free(s, strsz); 3841 } 3842 3843 } else { 3844 3845 iov.iov_base = data; 3846 iov.iov_len = MAXPATHLEN; 3847 uio.uio_iov = &iov; 3848 uio.uio_iovcnt = 1; 3849 uio.uio_segflg = UIO_SYSSPACE; 3850 uio.uio_extflg = UIO_COPY_CACHED; 3851 uio.uio_loffset = 0; 3852 uio.uio_resid = MAXPATHLEN; 3853 3854 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3855 3856 if (!error) 3857 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3858 } 3859 3860 if (error) { 3861 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3862 *cs->statusp = resp->status = puterrno4(error); 3863 goto out; 3864 } 3865 3866 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3867 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3868 MAXPATHLEN + 1); 3869 3870 if (name == NULL) { 3871 /* 3872 * Even though the conversion failed, we return 3873 * something. We just don't translate it. 3874 */ 3875 name = data; 3876 } 3877 3878 /* 3879 * treat link name as data 3880 */ 3881 (void) str_to_utf8(name, &resp->link); 3882 3883 if (name != data) 3884 kmem_free(name, MAXPATHLEN + 1); 3885 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3886 *cs->statusp = resp->status = NFS4_OK; 3887 3888 out: 3889 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3890 READLINK4res *, resp); 3891 } 3892 3893 static void 3894 rfs4_op_readlink_free(nfs_resop4 *resop) 3895 { 3896 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3897 utf8string *symlink = &resp->link; 3898 3899 if (symlink->utf8string_val) { 3900 UTF8STRING_FREE(*symlink) 3901 } 3902 } 3903 3904 /* 3905 * release_lockowner: 3906 * Release any state associated with the supplied 3907 * lockowner. Note if any lo_state is holding locks we will not 3908 * rele that lo_state and thus the lockowner will not be destroyed. 3909 * A client using lock after the lock owner stateid has been released 3910 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3911 * to reissue the lock with new_lock_owner set to TRUE. 3912 * args: lock_owner 3913 * res: status 3914 */ 3915 /* ARGSUSED */ 3916 static void 3917 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3918 struct svc_req *req, struct compound_state *cs) 3919 { 3920 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3921 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3922 rfs4_lockowner_t *lo; 3923 rfs4_openowner_t *oo; 3924 rfs4_state_t *sp; 3925 rfs4_lo_state_t *lsp; 3926 rfs4_client_t *cp; 3927 bool_t create = FALSE; 3928 locklist_t *llist; 3929 sysid_t sysid; 3930 3931 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3932 cs, RELEASE_LOCKOWNER4args *, ap); 3933 3934 /* Make sure there is a clientid around for this request */ 3935 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3936 3937 if (cp == NULL) { 3938 *cs->statusp = resp->status = 3939 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3940 goto out; 3941 } 3942 rfs4_client_rele(cp); 3943 3944 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3945 if (lo == NULL) { 3946 *cs->statusp = resp->status = NFS4_OK; 3947 goto out; 3948 } 3949 ASSERT(lo->rl_client != NULL); 3950 3951 /* 3952 * Check for EXPIRED client. If so will reap state with in a lease 3953 * period or on next set_clientid_confirm step 3954 */ 3955 if (rfs4_lease_expired(lo->rl_client)) { 3956 rfs4_lockowner_rele(lo); 3957 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3958 goto out; 3959 } 3960 3961 /* 3962 * If no sysid has been assigned, then no locks exist; just return. 3963 */ 3964 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3965 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3966 rfs4_lockowner_rele(lo); 3967 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3968 goto out; 3969 } 3970 3971 sysid = lo->rl_client->rc_sysidt; 3972 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3973 3974 /* 3975 * Mark the lockowner invalid. 3976 */ 3977 rfs4_dbe_hide(lo->rl_dbe); 3978 3979 /* 3980 * sysid-pid pair should now not be used since the lockowner is 3981 * invalid. If the client were to instantiate the lockowner again 3982 * it would be assigned a new pid. Thus we can get the list of 3983 * current locks. 3984 */ 3985 3986 llist = flk_get_active_locks(sysid, lo->rl_pid); 3987 /* If we are still holding locks fail */ 3988 if (llist != NULL) { 3989 3990 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3991 3992 flk_free_locklist(llist); 3993 /* 3994 * We need to unhide the lockowner so the client can 3995 * try it again. The bad thing here is if the client 3996 * has a logic error that took it here in the first place 3997 * he probably has lost accounting of the locks that it 3998 * is holding. So we may have dangling state until the 3999 * open owner state is reaped via close. One scenario 4000 * that could possibly occur is that the client has 4001 * sent the unlock request(s) in separate threads 4002 * and has not waited for the replies before sending the 4003 * RELEASE_LOCKOWNER request. Presumably, it would expect 4004 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4005 * reissuing the request. 4006 */ 4007 rfs4_dbe_unhide(lo->rl_dbe); 4008 rfs4_lockowner_rele(lo); 4009 goto out; 4010 } 4011 4012 /* 4013 * For the corresponding client we need to check each open 4014 * owner for any opens that have lockowner state associated 4015 * with this lockowner. 4016 */ 4017 4018 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4019 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4020 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4021 4022 rfs4_dbe_lock(oo->ro_dbe); 4023 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4024 sp = list_next(&oo->ro_statelist, sp)) { 4025 4026 rfs4_dbe_lock(sp->rs_dbe); 4027 for (lsp = list_head(&sp->rs_lostatelist); 4028 lsp != NULL; 4029 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4030 if (lsp->rls_locker == lo) { 4031 rfs4_dbe_lock(lsp->rls_dbe); 4032 rfs4_dbe_invalidate(lsp->rls_dbe); 4033 rfs4_dbe_unlock(lsp->rls_dbe); 4034 } 4035 } 4036 rfs4_dbe_unlock(sp->rs_dbe); 4037 } 4038 rfs4_dbe_unlock(oo->ro_dbe); 4039 } 4040 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4041 4042 rfs4_lockowner_rele(lo); 4043 4044 *cs->statusp = resp->status = NFS4_OK; 4045 4046 out: 4047 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4048 cs, RELEASE_LOCKOWNER4res *, resp); 4049 } 4050 4051 /* 4052 * short utility function to lookup a file and recall the delegation 4053 */ 4054 static rfs4_file_t * 4055 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4056 int *lkup_error, cred_t *cr) 4057 { 4058 vnode_t *vp; 4059 rfs4_file_t *fp = NULL; 4060 bool_t fcreate = FALSE; 4061 int error; 4062 4063 if (vpp) 4064 *vpp = NULL; 4065 4066 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4067 NULL)) == 0) { 4068 if (vp->v_type == VREG) 4069 fp = rfs4_findfile(vp, NULL, &fcreate); 4070 if (vpp) 4071 *vpp = vp; 4072 else 4073 VN_RELE(vp); 4074 } 4075 4076 if (lkup_error) 4077 *lkup_error = error; 4078 4079 return (fp); 4080 } 4081 4082 /* 4083 * remove: args: CURRENT_FH: directory; name. 4084 * res: status. If success - CURRENT_FH unchanged, return change_info 4085 * for directory. 4086 */ 4087 /* ARGSUSED */ 4088 static void 4089 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4090 struct compound_state *cs) 4091 { 4092 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4093 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4094 int error; 4095 vnode_t *dvp, *vp; 4096 struct vattr bdva, idva, adva; 4097 char *nm; 4098 uint_t len; 4099 rfs4_file_t *fp; 4100 int in_crit = 0; 4101 bslabel_t *clabel; 4102 struct sockaddr *ca; 4103 char *name = NULL; 4104 4105 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4106 REMOVE4args *, args); 4107 4108 /* CURRENT_FH: directory */ 4109 dvp = cs->vp; 4110 if (dvp == NULL) { 4111 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4112 goto out; 4113 } 4114 4115 if (cs->access == CS_ACCESS_DENIED) { 4116 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4117 goto out; 4118 } 4119 4120 /* 4121 * If there is an unshared filesystem mounted on this vnode, 4122 * Do not allow to remove anything in this directory. 4123 */ 4124 if (vn_ismntpt(dvp)) { 4125 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4126 goto out; 4127 } 4128 4129 if (dvp->v_type != VDIR) { 4130 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4131 goto out; 4132 } 4133 4134 if (!utf8_dir_verify(&args->target)) { 4135 *cs->statusp = resp->status = NFS4ERR_INVAL; 4136 goto out; 4137 } 4138 4139 /* 4140 * Lookup the file so that we can check if it's a directory 4141 */ 4142 nm = utf8_to_fn(&args->target, &len, NULL); 4143 if (nm == NULL) { 4144 *cs->statusp = resp->status = NFS4ERR_INVAL; 4145 goto out; 4146 } 4147 4148 if (len > MAXNAMELEN) { 4149 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4150 kmem_free(nm, len); 4151 goto out; 4152 } 4153 4154 if (rdonly4(cs->exi, cs->vp, req)) { 4155 *cs->statusp = resp->status = NFS4ERR_ROFS; 4156 kmem_free(nm, len); 4157 goto out; 4158 } 4159 4160 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4161 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4162 MAXPATHLEN + 1); 4163 4164 if (name == NULL) { 4165 *cs->statusp = resp->status = NFS4ERR_INVAL; 4166 kmem_free(nm, len); 4167 goto out; 4168 } 4169 4170 /* 4171 * Lookup the file to determine type and while we are see if 4172 * there is a file struct around and check for delegation. 4173 * We don't need to acquire va_seq before this lookup, if 4174 * it causes an update, cinfo.before will not match, which will 4175 * trigger a cache flush even if atomic is TRUE. 4176 */ 4177 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4178 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4179 NULL)) { 4180 VN_RELE(vp); 4181 rfs4_file_rele(fp); 4182 *cs->statusp = resp->status = NFS4ERR_DELAY; 4183 if (nm != name) 4184 kmem_free(name, MAXPATHLEN + 1); 4185 kmem_free(nm, len); 4186 goto out; 4187 } 4188 } 4189 4190 /* Didn't find anything to remove */ 4191 if (vp == NULL) { 4192 *cs->statusp = resp->status = error; 4193 if (nm != name) 4194 kmem_free(name, MAXPATHLEN + 1); 4195 kmem_free(nm, len); 4196 goto out; 4197 } 4198 4199 if (nbl_need_check(vp)) { 4200 nbl_start_crit(vp, RW_READER); 4201 in_crit = 1; 4202 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4203 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4204 if (nm != name) 4205 kmem_free(name, MAXPATHLEN + 1); 4206 kmem_free(nm, len); 4207 nbl_end_crit(vp); 4208 VN_RELE(vp); 4209 if (fp) { 4210 rfs4_clear_dont_grant(fp); 4211 rfs4_file_rele(fp); 4212 } 4213 goto out; 4214 } 4215 } 4216 4217 /* check label before allowing removal */ 4218 if (is_system_labeled()) { 4219 ASSERT(req->rq_label != NULL); 4220 clabel = req->rq_label; 4221 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4222 "got client label from request(1)", 4223 struct svc_req *, req); 4224 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4225 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4226 cs->exi)) { 4227 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4228 if (name != nm) 4229 kmem_free(name, MAXPATHLEN + 1); 4230 kmem_free(nm, len); 4231 if (in_crit) 4232 nbl_end_crit(vp); 4233 VN_RELE(vp); 4234 if (fp) { 4235 rfs4_clear_dont_grant(fp); 4236 rfs4_file_rele(fp); 4237 } 4238 goto out; 4239 } 4240 } 4241 } 4242 4243 /* Get dir "before" change value */ 4244 bdva.va_mask = AT_CTIME|AT_SEQ; 4245 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4246 if (error) { 4247 *cs->statusp = resp->status = puterrno4(error); 4248 if (nm != name) 4249 kmem_free(name, MAXPATHLEN + 1); 4250 kmem_free(nm, len); 4251 if (in_crit) 4252 nbl_end_crit(vp); 4253 VN_RELE(vp); 4254 if (fp) { 4255 rfs4_clear_dont_grant(fp); 4256 rfs4_file_rele(fp); 4257 } 4258 goto out; 4259 } 4260 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4261 4262 /* Actually do the REMOVE operation */ 4263 if (vp->v_type == VDIR) { 4264 /* 4265 * Can't remove a directory that has a mounted-on filesystem. 4266 */ 4267 if (vn_ismntpt(vp)) { 4268 error = EACCES; 4269 } else { 4270 /* 4271 * System V defines rmdir to return EEXIST, 4272 * not ENOTEMPTY, if the directory is not 4273 * empty. A System V NFS server needs to map 4274 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4275 * transmit over the wire. 4276 */ 4277 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4278 NULL, 0)) == EEXIST) 4279 error = ENOTEMPTY; 4280 } 4281 } else { 4282 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4283 fp != NULL) { 4284 struct vattr va; 4285 vnode_t *tvp; 4286 4287 rfs4_dbe_lock(fp->rf_dbe); 4288 tvp = fp->rf_vp; 4289 if (tvp) 4290 VN_HOLD(tvp); 4291 rfs4_dbe_unlock(fp->rf_dbe); 4292 4293 if (tvp) { 4294 /* 4295 * This is va_seq safe because we are not 4296 * manipulating dvp. 4297 */ 4298 va.va_mask = AT_NLINK; 4299 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4300 va.va_nlink == 0) { 4301 /* Remove state on file remove */ 4302 if (in_crit) { 4303 nbl_end_crit(vp); 4304 in_crit = 0; 4305 } 4306 rfs4_close_all_state(fp); 4307 } 4308 VN_RELE(tvp); 4309 } 4310 } 4311 } 4312 4313 if (in_crit) 4314 nbl_end_crit(vp); 4315 VN_RELE(vp); 4316 4317 if (fp) { 4318 rfs4_clear_dont_grant(fp); 4319 rfs4_file_rele(fp); 4320 } 4321 if (nm != name) 4322 kmem_free(name, MAXPATHLEN + 1); 4323 kmem_free(nm, len); 4324 4325 if (error) { 4326 *cs->statusp = resp->status = puterrno4(error); 4327 goto out; 4328 } 4329 4330 /* 4331 * Get the initial "after" sequence number, if it fails, set to zero 4332 */ 4333 idva.va_mask = AT_SEQ; 4334 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4335 idva.va_seq = 0; 4336 4337 /* 4338 * Force modified data and metadata out to stable storage. 4339 */ 4340 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4341 4342 /* 4343 * Get "after" change value, if it fails, simply return the 4344 * before value. 4345 */ 4346 adva.va_mask = AT_CTIME|AT_SEQ; 4347 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4348 adva.va_ctime = bdva.va_ctime; 4349 adva.va_seq = 0; 4350 } 4351 4352 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4353 4354 /* 4355 * The cinfo.atomic = TRUE only if we have 4356 * non-zero va_seq's, and it has incremented by exactly one 4357 * during the VOP_REMOVE/RMDIR and it didn't change during 4358 * the VOP_FSYNC. 4359 */ 4360 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4361 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4362 resp->cinfo.atomic = TRUE; 4363 else 4364 resp->cinfo.atomic = FALSE; 4365 4366 *cs->statusp = resp->status = NFS4_OK; 4367 4368 out: 4369 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4370 REMOVE4res *, resp); 4371 } 4372 4373 /* 4374 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4375 * oldname and newname. 4376 * res: status. If success - CURRENT_FH unchanged, return change_info 4377 * for both from and target directories. 4378 */ 4379 /* ARGSUSED */ 4380 static void 4381 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4382 struct compound_state *cs) 4383 { 4384 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4385 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4386 int error; 4387 vnode_t *odvp; 4388 vnode_t *ndvp; 4389 vnode_t *srcvp, *targvp; 4390 struct vattr obdva, oidva, oadva; 4391 struct vattr nbdva, nidva, nadva; 4392 char *onm, *nnm; 4393 uint_t olen, nlen; 4394 rfs4_file_t *fp, *sfp; 4395 int in_crit_src, in_crit_targ; 4396 int fp_rele_grant_hold, sfp_rele_grant_hold; 4397 bslabel_t *clabel; 4398 struct sockaddr *ca; 4399 char *converted_onm = NULL; 4400 char *converted_nnm = NULL; 4401 4402 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4403 RENAME4args *, args); 4404 4405 fp = sfp = NULL; 4406 srcvp = targvp = NULL; 4407 in_crit_src = in_crit_targ = 0; 4408 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4409 4410 /* CURRENT_FH: target directory */ 4411 ndvp = cs->vp; 4412 if (ndvp == NULL) { 4413 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4414 goto out; 4415 } 4416 4417 /* SAVED_FH: from directory */ 4418 odvp = cs->saved_vp; 4419 if (odvp == NULL) { 4420 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4421 goto out; 4422 } 4423 4424 if (cs->access == CS_ACCESS_DENIED) { 4425 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4426 goto out; 4427 } 4428 4429 /* 4430 * If there is an unshared filesystem mounted on this vnode, 4431 * do not allow to rename objects in this directory. 4432 */ 4433 if (vn_ismntpt(odvp)) { 4434 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4435 goto out; 4436 } 4437 4438 /* 4439 * If there is an unshared filesystem mounted on this vnode, 4440 * do not allow to rename to this directory. 4441 */ 4442 if (vn_ismntpt(ndvp)) { 4443 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4444 goto out; 4445 } 4446 4447 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4448 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4449 goto out; 4450 } 4451 4452 if (cs->saved_exi != cs->exi) { 4453 *cs->statusp = resp->status = NFS4ERR_XDEV; 4454 goto out; 4455 } 4456 4457 if (!utf8_dir_verify(&args->oldname)) { 4458 *cs->statusp = resp->status = NFS4ERR_INVAL; 4459 goto out; 4460 } 4461 4462 if (!utf8_dir_verify(&args->newname)) { 4463 *cs->statusp = resp->status = NFS4ERR_INVAL; 4464 goto out; 4465 } 4466 4467 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4468 if (onm == NULL) { 4469 *cs->statusp = resp->status = NFS4ERR_INVAL; 4470 goto out; 4471 } 4472 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4473 nlen = MAXPATHLEN + 1; 4474 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4475 nlen); 4476 4477 if (converted_onm == NULL) { 4478 *cs->statusp = resp->status = NFS4ERR_INVAL; 4479 kmem_free(onm, olen); 4480 goto out; 4481 } 4482 4483 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4484 if (nnm == NULL) { 4485 *cs->statusp = resp->status = NFS4ERR_INVAL; 4486 if (onm != converted_onm) 4487 kmem_free(converted_onm, MAXPATHLEN + 1); 4488 kmem_free(onm, olen); 4489 goto out; 4490 } 4491 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4492 MAXPATHLEN + 1); 4493 4494 if (converted_nnm == NULL) { 4495 *cs->statusp = resp->status = NFS4ERR_INVAL; 4496 kmem_free(nnm, nlen); 4497 nnm = NULL; 4498 if (onm != converted_onm) 4499 kmem_free(converted_onm, MAXPATHLEN + 1); 4500 kmem_free(onm, olen); 4501 goto out; 4502 } 4503 4504 4505 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4506 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4507 kmem_free(onm, olen); 4508 kmem_free(nnm, nlen); 4509 goto out; 4510 } 4511 4512 4513 if (rdonly4(cs->exi, cs->vp, req)) { 4514 *cs->statusp = resp->status = NFS4ERR_ROFS; 4515 if (onm != converted_onm) 4516 kmem_free(converted_onm, MAXPATHLEN + 1); 4517 kmem_free(onm, olen); 4518 if (nnm != converted_nnm) 4519 kmem_free(converted_nnm, MAXPATHLEN + 1); 4520 kmem_free(nnm, nlen); 4521 goto out; 4522 } 4523 4524 /* check label of the target dir */ 4525 if (is_system_labeled()) { 4526 ASSERT(req->rq_label != NULL); 4527 clabel = req->rq_label; 4528 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4529 "got client label from request(1)", 4530 struct svc_req *, req); 4531 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4532 if (!do_rfs_label_check(clabel, ndvp, 4533 EQUALITY_CHECK, cs->exi)) { 4534 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4535 goto err_out; 4536 } 4537 } 4538 } 4539 4540 /* 4541 * Is the source a file and have a delegation? 4542 * We don't need to acquire va_seq before these lookups, if 4543 * it causes an update, cinfo.before will not match, which will 4544 * trigger a cache flush even if atomic is TRUE. 4545 */ 4546 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4547 &error, cs->cr)) { 4548 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4549 NULL)) { 4550 *cs->statusp = resp->status = NFS4ERR_DELAY; 4551 goto err_out; 4552 } 4553 } 4554 4555 if (srcvp == NULL) { 4556 *cs->statusp = resp->status = puterrno4(error); 4557 if (onm != converted_onm) 4558 kmem_free(converted_onm, MAXPATHLEN + 1); 4559 kmem_free(onm, olen); 4560 if (nnm != converted_nnm) 4561 kmem_free(converted_nnm, MAXPATHLEN + 1); 4562 kmem_free(nnm, nlen); 4563 goto out; 4564 } 4565 4566 sfp_rele_grant_hold = 1; 4567 4568 /* Does the destination exist and a file and have a delegation? */ 4569 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4570 NULL, cs->cr)) { 4571 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4572 NULL)) { 4573 *cs->statusp = resp->status = NFS4ERR_DELAY; 4574 goto err_out; 4575 } 4576 } 4577 fp_rele_grant_hold = 1; 4578 4579 4580 /* Check for NBMAND lock on both source and target */ 4581 if (nbl_need_check(srcvp)) { 4582 nbl_start_crit(srcvp, RW_READER); 4583 in_crit_src = 1; 4584 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4585 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4586 goto err_out; 4587 } 4588 } 4589 4590 if (targvp && nbl_need_check(targvp)) { 4591 nbl_start_crit(targvp, RW_READER); 4592 in_crit_targ = 1; 4593 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4594 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4595 goto err_out; 4596 } 4597 } 4598 4599 /* Get source "before" change value */ 4600 obdva.va_mask = AT_CTIME|AT_SEQ; 4601 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4602 if (!error) { 4603 nbdva.va_mask = AT_CTIME|AT_SEQ; 4604 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4605 } 4606 if (error) { 4607 *cs->statusp = resp->status = puterrno4(error); 4608 goto err_out; 4609 } 4610 4611 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4612 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4613 4614 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4615 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4616 struct vattr va; 4617 vnode_t *tvp; 4618 4619 rfs4_dbe_lock(fp->rf_dbe); 4620 tvp = fp->rf_vp; 4621 if (tvp) 4622 VN_HOLD(tvp); 4623 rfs4_dbe_unlock(fp->rf_dbe); 4624 4625 if (tvp) { 4626 va.va_mask = AT_NLINK; 4627 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4628 va.va_nlink == 0) { 4629 /* The file is gone and so should the state */ 4630 if (in_crit_targ) { 4631 nbl_end_crit(targvp); 4632 in_crit_targ = 0; 4633 } 4634 rfs4_close_all_state(fp); 4635 } 4636 VN_RELE(tvp); 4637 } 4638 } 4639 if (error == 0) 4640 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4641 4642 if (in_crit_src) 4643 nbl_end_crit(srcvp); 4644 if (srcvp) 4645 VN_RELE(srcvp); 4646 if (in_crit_targ) 4647 nbl_end_crit(targvp); 4648 if (targvp) 4649 VN_RELE(targvp); 4650 4651 if (sfp) { 4652 rfs4_clear_dont_grant(sfp); 4653 rfs4_file_rele(sfp); 4654 } 4655 if (fp) { 4656 rfs4_clear_dont_grant(fp); 4657 rfs4_file_rele(fp); 4658 } 4659 4660 if (converted_onm != onm) 4661 kmem_free(converted_onm, MAXPATHLEN + 1); 4662 kmem_free(onm, olen); 4663 if (converted_nnm != nnm) 4664 kmem_free(converted_nnm, MAXPATHLEN + 1); 4665 kmem_free(nnm, nlen); 4666 4667 /* 4668 * Get the initial "after" sequence number, if it fails, set to zero 4669 */ 4670 oidva.va_mask = AT_SEQ; 4671 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4672 oidva.va_seq = 0; 4673 4674 nidva.va_mask = AT_SEQ; 4675 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4676 nidva.va_seq = 0; 4677 4678 /* 4679 * Force modified data and metadata out to stable storage. 4680 */ 4681 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4682 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4683 4684 if (error) { 4685 *cs->statusp = resp->status = puterrno4(error); 4686 goto out; 4687 } 4688 4689 /* 4690 * Get "after" change values, if it fails, simply return the 4691 * before value. 4692 */ 4693 oadva.va_mask = AT_CTIME|AT_SEQ; 4694 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4695 oadva.va_ctime = obdva.va_ctime; 4696 oadva.va_seq = 0; 4697 } 4698 4699 nadva.va_mask = AT_CTIME|AT_SEQ; 4700 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4701 nadva.va_ctime = nbdva.va_ctime; 4702 nadva.va_seq = 0; 4703 } 4704 4705 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4706 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4707 4708 /* 4709 * The cinfo.atomic = TRUE only if we have 4710 * non-zero va_seq's, and it has incremented by exactly one 4711 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4712 */ 4713 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4714 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4715 resp->source_cinfo.atomic = TRUE; 4716 else 4717 resp->source_cinfo.atomic = FALSE; 4718 4719 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4720 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4721 resp->target_cinfo.atomic = TRUE; 4722 else 4723 resp->target_cinfo.atomic = FALSE; 4724 4725 #ifdef VOLATILE_FH_TEST 4726 { 4727 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4728 4729 /* 4730 * Add the renamed file handle to the volatile rename list 4731 */ 4732 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4733 /* file handles may expire on rename */ 4734 vnode_t *vp; 4735 4736 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4737 /* 4738 * Already know that nnm will be a valid string 4739 */ 4740 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4741 NULL, NULL, NULL); 4742 kmem_free(nnm, nlen); 4743 if (!error) { 4744 add_volrnm_fh(cs->exi, vp); 4745 VN_RELE(vp); 4746 } 4747 } 4748 } 4749 #endif /* VOLATILE_FH_TEST */ 4750 4751 *cs->statusp = resp->status = NFS4_OK; 4752 out: 4753 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4754 RENAME4res *, resp); 4755 return; 4756 4757 err_out: 4758 if (onm != converted_onm) 4759 kmem_free(converted_onm, MAXPATHLEN + 1); 4760 if (onm != NULL) 4761 kmem_free(onm, olen); 4762 if (nnm != converted_nnm) 4763 kmem_free(converted_nnm, MAXPATHLEN + 1); 4764 if (nnm != NULL) 4765 kmem_free(nnm, nlen); 4766 4767 if (in_crit_src) nbl_end_crit(srcvp); 4768 if (in_crit_targ) nbl_end_crit(targvp); 4769 if (targvp) VN_RELE(targvp); 4770 if (srcvp) VN_RELE(srcvp); 4771 if (sfp) { 4772 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4773 rfs4_file_rele(sfp); 4774 } 4775 if (fp) { 4776 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4777 rfs4_file_rele(fp); 4778 } 4779 4780 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4781 RENAME4res *, resp); 4782 } 4783 4784 /* ARGSUSED */ 4785 static void 4786 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4787 struct compound_state *cs) 4788 { 4789 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4790 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4791 rfs4_client_t *cp; 4792 4793 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4794 RENEW4args *, args); 4795 4796 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4797 *cs->statusp = resp->status = 4798 rfs4_check_clientid(&args->clientid, 0); 4799 goto out; 4800 } 4801 4802 if (rfs4_lease_expired(cp)) { 4803 rfs4_client_rele(cp); 4804 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4805 goto out; 4806 } 4807 4808 rfs4_update_lease(cp); 4809 4810 mutex_enter(cp->rc_cbinfo.cb_lock); 4811 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4812 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4813 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4814 } else { 4815 *cs->statusp = resp->status = NFS4_OK; 4816 } 4817 mutex_exit(cp->rc_cbinfo.cb_lock); 4818 4819 rfs4_client_rele(cp); 4820 4821 out: 4822 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4823 RENEW4res *, resp); 4824 } 4825 4826 /* ARGSUSED */ 4827 static void 4828 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4829 struct compound_state *cs) 4830 { 4831 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4832 4833 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4834 4835 /* No need to check cs->access - we are not accessing any object */ 4836 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4837 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4838 goto out; 4839 } 4840 if (cs->vp != NULL) { 4841 VN_RELE(cs->vp); 4842 } 4843 cs->vp = cs->saved_vp; 4844 cs->saved_vp = NULL; 4845 cs->exi = cs->saved_exi; 4846 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4847 *cs->statusp = resp->status = NFS4_OK; 4848 cs->deleg = FALSE; 4849 4850 out: 4851 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4852 RESTOREFH4res *, resp); 4853 } 4854 4855 /* ARGSUSED */ 4856 static void 4857 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4858 struct compound_state *cs) 4859 { 4860 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4861 4862 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4863 4864 /* No need to check cs->access - we are not accessing any object */ 4865 if (cs->vp == NULL) { 4866 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4867 goto out; 4868 } 4869 if (cs->saved_vp != NULL) { 4870 VN_RELE(cs->saved_vp); 4871 } 4872 cs->saved_vp = cs->vp; 4873 VN_HOLD(cs->saved_vp); 4874 cs->saved_exi = cs->exi; 4875 /* 4876 * since SAVEFH is fairly rare, don't alloc space for its fh 4877 * unless necessary. 4878 */ 4879 if (cs->saved_fh.nfs_fh4_val == NULL) { 4880 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4881 } 4882 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4883 *cs->statusp = resp->status = NFS4_OK; 4884 4885 out: 4886 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4887 SAVEFH4res *, resp); 4888 } 4889 4890 /* 4891 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4892 * return the bitmap of attrs that were set successfully. It is also 4893 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4894 * always be called only after rfs4_do_set_attrs(). 4895 * 4896 * Verify that the attributes are same as the expected ones. sargp->vap 4897 * and sargp->sbp contain the input attributes as translated from fattr4. 4898 * 4899 * This function verifies only the attrs that correspond to a vattr or 4900 * vfsstat struct. That is because of the extra step needed to get the 4901 * corresponding system structs. Other attributes have already been set or 4902 * verified by do_rfs4_set_attrs. 4903 * 4904 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4905 */ 4906 static int 4907 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4908 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4909 { 4910 int error, ret_error = 0; 4911 int i, k; 4912 uint_t sva_mask = sargp->vap->va_mask; 4913 uint_t vbit; 4914 union nfs4_attr_u *na; 4915 uint8_t *amap; 4916 bool_t getsb = ntovp->vfsstat; 4917 4918 if (sva_mask != 0) { 4919 /* 4920 * Okay to overwrite sargp->vap because we verify based 4921 * on the incoming values. 4922 */ 4923 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4924 sargp->cs->cr, NULL); 4925 if (ret_error) { 4926 if (resp == NULL) 4927 return (ret_error); 4928 /* 4929 * Must return bitmap of successful attrs 4930 */ 4931 sva_mask = 0; /* to prevent checking vap later */ 4932 } else { 4933 /* 4934 * Some file systems clobber va_mask. it is probably 4935 * wrong of them to do so, nonethless we practice 4936 * defensive coding. 4937 * See bug id 4276830. 4938 */ 4939 sargp->vap->va_mask = sva_mask; 4940 } 4941 } 4942 4943 if (getsb) { 4944 /* 4945 * Now get the superblock and loop on the bitmap, as there is 4946 * no simple way of translating from superblock to bitmap4. 4947 */ 4948 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4949 if (ret_error) { 4950 if (resp == NULL) 4951 goto errout; 4952 getsb = FALSE; 4953 } 4954 } 4955 4956 /* 4957 * Now loop and verify each attribute which getattr returned 4958 * whether it's the same as the input. 4959 */ 4960 if (resp == NULL && !getsb && (sva_mask == 0)) 4961 goto errout; 4962 4963 na = ntovp->na; 4964 amap = ntovp->amap; 4965 k = 0; 4966 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4967 k = *amap; 4968 ASSERT(nfs4_ntov_map[k].nval == k); 4969 vbit = nfs4_ntov_map[k].vbit; 4970 4971 /* 4972 * If vattr attribute but VOP_GETATTR failed, or it's 4973 * superblock attribute but VFS_STATVFS failed, skip 4974 */ 4975 if (vbit) { 4976 if ((vbit & sva_mask) == 0) 4977 continue; 4978 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4979 continue; 4980 } 4981 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4982 if (resp != NULL) { 4983 if (error) 4984 ret_error = -1; /* not all match */ 4985 else /* update response bitmap */ 4986 *resp |= nfs4_ntov_map[k].fbit; 4987 continue; 4988 } 4989 if (error) { 4990 ret_error = -1; /* not all match */ 4991 break; 4992 } 4993 } 4994 errout: 4995 return (ret_error); 4996 } 4997 4998 /* 4999 * Decode the attribute to be set/verified. If the attr requires a sys op 5000 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5001 * call the sv_getit function for it, because the sys op hasn't yet been done. 5002 * Return 0 for success, error code if failed. 5003 * 5004 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5005 */ 5006 static int 5007 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5008 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5009 { 5010 int error = 0; 5011 bool_t set_later; 5012 5013 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5014 5015 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5016 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5017 /* 5018 * don't verify yet if a vattr or sb dependent attr, 5019 * because we don't have their sys values yet. 5020 * Will be done later. 5021 */ 5022 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5023 /* 5024 * ACLs are a special case, since setting the MODE 5025 * conflicts with setting the ACL. We delay setting 5026 * the ACL until all other attributes have been set. 5027 * The ACL gets set in do_rfs4_op_setattr(). 5028 */ 5029 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5030 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5031 sargp, nap); 5032 if (error) { 5033 xdr_free(nfs4_ntov_map[k].xfunc, 5034 (caddr_t)nap); 5035 } 5036 } 5037 } 5038 } else { 5039 #ifdef DEBUG 5040 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5041 "decoding attribute %d\n", k); 5042 #endif 5043 error = EINVAL; 5044 } 5045 if (!error && resp_bval && !set_later) { 5046 *resp_bval |= nfs4_ntov_map[k].fbit; 5047 } 5048 5049 return (error); 5050 } 5051 5052 /* 5053 * Set vattr based on incoming fattr4 attrs - used by setattr. 5054 * Set response mask. Ignore any values that are not writable vattr attrs. 5055 */ 5056 static nfsstat4 5057 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5058 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5059 nfs4_attr_cmd_t cmd) 5060 { 5061 int error = 0; 5062 int i; 5063 char *attrs = fattrp->attrlist4; 5064 uint32_t attrslen = fattrp->attrlist4_len; 5065 XDR xdr; 5066 nfsstat4 status = NFS4_OK; 5067 vnode_t *vp = cs->vp; 5068 union nfs4_attr_u *na; 5069 uint8_t *amap; 5070 5071 #ifndef lint 5072 /* 5073 * Make sure that maximum attribute number can be expressed as an 5074 * 8 bit quantity. 5075 */ 5076 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5077 #endif 5078 5079 if (vp == NULL) { 5080 if (resp) 5081 *resp = 0; 5082 return (NFS4ERR_NOFILEHANDLE); 5083 } 5084 if (cs->access == CS_ACCESS_DENIED) { 5085 if (resp) 5086 *resp = 0; 5087 return (NFS4ERR_ACCESS); 5088 } 5089 5090 sargp->op = cmd; 5091 sargp->cs = cs; 5092 sargp->flag = 0; /* may be set later */ 5093 sargp->vap->va_mask = 0; 5094 sargp->rdattr_error = NFS4_OK; 5095 sargp->rdattr_error_req = FALSE; 5096 /* sargp->sbp is set by the caller */ 5097 5098 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5099 5100 na = ntovp->na; 5101 amap = ntovp->amap; 5102 5103 /* 5104 * The following loop iterates on the nfs4_ntov_map checking 5105 * if the fbit is set in the requested bitmap. 5106 * If set then we process the arguments using the 5107 * rfs4_fattr4 conversion functions to populate the setattr 5108 * vattr and va_mask. Any settable attrs that are not using vattr 5109 * will be set in this loop. 5110 */ 5111 for (i = 0; i < nfs4_ntov_map_size; i++) { 5112 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5113 continue; 5114 } 5115 /* 5116 * If setattr, must be a writable attr. 5117 * If verify/nverify, must be a readable attr. 5118 */ 5119 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5120 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5121 /* 5122 * Client tries to set/verify an 5123 * unsupported attribute, tries to set 5124 * a read only attr or verify a write 5125 * only one - error! 5126 */ 5127 break; 5128 } 5129 /* 5130 * Decode the attribute to set/verify 5131 */ 5132 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5133 &xdr, resp ? resp : NULL, na); 5134 if (error) 5135 break; 5136 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5137 na++; 5138 (ntovp->attrcnt)++; 5139 if (nfs4_ntov_map[i].vfsstat) 5140 ntovp->vfsstat = TRUE; 5141 } 5142 5143 if (error != 0) 5144 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5145 puterrno4(error)); 5146 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5147 return (status); 5148 } 5149 5150 static nfsstat4 5151 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5152 stateid4 *stateid) 5153 { 5154 int error = 0; 5155 struct nfs4_svgetit_arg sarg; 5156 bool_t trunc; 5157 5158 nfsstat4 status = NFS4_OK; 5159 cred_t *cr = cs->cr; 5160 vnode_t *vp = cs->vp; 5161 struct nfs4_ntov_table ntov; 5162 struct statvfs64 sb; 5163 struct vattr bva; 5164 struct flock64 bf; 5165 int in_crit = 0; 5166 uint_t saved_mask = 0; 5167 caller_context_t ct; 5168 5169 *resp = 0; 5170 sarg.sbp = &sb; 5171 sarg.is_referral = B_FALSE; 5172 nfs4_ntov_table_init(&ntov); 5173 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5174 NFS4ATTR_SETIT); 5175 if (status != NFS4_OK) { 5176 /* 5177 * failed set attrs 5178 */ 5179 goto done; 5180 } 5181 if ((sarg.vap->va_mask == 0) && 5182 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5183 /* 5184 * no further work to be done 5185 */ 5186 goto done; 5187 } 5188 5189 /* 5190 * If we got a request to set the ACL and the MODE, only 5191 * allow changing VSUID, VSGID, and VSVTX. Attempting 5192 * to change any other bits, along with setting an ACL, 5193 * gives NFS4ERR_INVAL. 5194 */ 5195 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5196 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5197 vattr_t va; 5198 5199 va.va_mask = AT_MODE; 5200 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5201 if (error) { 5202 status = puterrno4(error); 5203 goto done; 5204 } 5205 if ((sarg.vap->va_mode ^ va.va_mode) & 5206 ~(VSUID | VSGID | VSVTX)) { 5207 status = NFS4ERR_INVAL; 5208 goto done; 5209 } 5210 } 5211 5212 /* Check stateid only if size has been set */ 5213 if (sarg.vap->va_mask & AT_SIZE) { 5214 trunc = (sarg.vap->va_size == 0); 5215 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5216 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5217 if (status != NFS4_OK) 5218 goto done; 5219 } else { 5220 ct.cc_sysid = 0; 5221 ct.cc_pid = 0; 5222 ct.cc_caller_id = nfs4_srv_caller_id; 5223 ct.cc_flags = CC_DONTBLOCK; 5224 } 5225 5226 /* XXX start of possible race with delegations */ 5227 5228 /* 5229 * We need to specially handle size changes because it is 5230 * possible for the client to create a file with read-only 5231 * modes, but with the file opened for writing. If the client 5232 * then tries to set the file size, e.g. ftruncate(3C), 5233 * fcntl(F_FREESP), the normal access checking done in 5234 * VOP_SETATTR would prevent the client from doing it even though 5235 * it should be allowed to do so. To get around this, we do the 5236 * access checking for ourselves and use VOP_SPACE which doesn't 5237 * do the access checking. 5238 * Also the client should not be allowed to change the file 5239 * size if there is a conflicting non-blocking mandatory lock in 5240 * the region of the change. 5241 */ 5242 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5243 u_offset_t offset; 5244 ssize_t length; 5245 5246 /* 5247 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5248 * before returning, sarg.vap->va_mask is used to 5249 * generate the setattr reply bitmap. We also clear 5250 * AT_SIZE below before calling VOP_SPACE. For both 5251 * of these cases, the va_mask needs to be saved here 5252 * and restored after calling VOP_SETATTR. 5253 */ 5254 saved_mask = sarg.vap->va_mask; 5255 5256 /* 5257 * Check any possible conflict due to NBMAND locks. 5258 * Get into critical region before VOP_GETATTR, so the 5259 * size attribute is valid when checking conflicts. 5260 */ 5261 if (nbl_need_check(vp)) { 5262 nbl_start_crit(vp, RW_READER); 5263 in_crit = 1; 5264 } 5265 5266 bva.va_mask = AT_UID|AT_SIZE; 5267 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5268 status = puterrno4(error); 5269 goto done; 5270 } 5271 5272 if (in_crit) { 5273 if (sarg.vap->va_size < bva.va_size) { 5274 offset = sarg.vap->va_size; 5275 length = bva.va_size - sarg.vap->va_size; 5276 } else { 5277 offset = bva.va_size; 5278 length = sarg.vap->va_size - bva.va_size; 5279 } 5280 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5281 &ct)) { 5282 status = NFS4ERR_LOCKED; 5283 goto done; 5284 } 5285 } 5286 5287 if (crgetuid(cr) == bva.va_uid) { 5288 sarg.vap->va_mask &= ~AT_SIZE; 5289 bf.l_type = F_WRLCK; 5290 bf.l_whence = 0; 5291 bf.l_start = (off64_t)sarg.vap->va_size; 5292 bf.l_len = 0; 5293 bf.l_sysid = 0; 5294 bf.l_pid = 0; 5295 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5296 (offset_t)sarg.vap->va_size, cr, &ct); 5297 } 5298 } 5299 5300 if (!error && sarg.vap->va_mask != 0) 5301 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5302 5303 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5304 if (saved_mask & AT_SIZE) 5305 sarg.vap->va_mask |= AT_SIZE; 5306 5307 /* 5308 * If an ACL was being set, it has been delayed until now, 5309 * in order to set the mode (via the VOP_SETATTR() above) first. 5310 */ 5311 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5312 int i; 5313 5314 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5315 if (ntov.amap[i] == FATTR4_ACL) 5316 break; 5317 if (i < NFS4_MAXNUM_ATTRS) { 5318 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5319 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5320 if (error == 0) { 5321 *resp |= FATTR4_ACL_MASK; 5322 } else if (error == ENOTSUP) { 5323 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5324 status = NFS4ERR_ATTRNOTSUPP; 5325 goto done; 5326 } 5327 } else { 5328 NFS4_DEBUG(rfs4_debug, 5329 (CE_NOTE, "do_rfs4_op_setattr: " 5330 "unable to find ACL in fattr4")); 5331 error = EINVAL; 5332 } 5333 } 5334 5335 if (error) { 5336 /* check if a monitor detected a delegation conflict */ 5337 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5338 status = NFS4ERR_DELAY; 5339 else 5340 status = puterrno4(error); 5341 5342 /* 5343 * Set the response bitmap when setattr failed. 5344 * If VOP_SETATTR partially succeeded, test by doing a 5345 * VOP_GETATTR on the object and comparing the data 5346 * to the setattr arguments. 5347 */ 5348 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5349 } else { 5350 /* 5351 * Force modified metadata out to stable storage. 5352 */ 5353 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5354 /* 5355 * Set response bitmap 5356 */ 5357 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5358 } 5359 5360 /* Return early and already have a NFSv4 error */ 5361 done: 5362 /* 5363 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5364 * conversion sets both readable and writeable NFS4 attrs 5365 * for AT_MTIME and AT_ATIME. The line below masks out 5366 * unrequested attrs from the setattr result bitmap. This 5367 * is placed after the done: label to catch the ATTRNOTSUP 5368 * case. 5369 */ 5370 *resp &= fattrp->attrmask; 5371 5372 if (in_crit) 5373 nbl_end_crit(vp); 5374 5375 nfs4_ntov_table_free(&ntov, &sarg); 5376 5377 return (status); 5378 } 5379 5380 /* ARGSUSED */ 5381 static void 5382 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5383 struct compound_state *cs) 5384 { 5385 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5386 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5387 bslabel_t *clabel; 5388 5389 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5390 SETATTR4args *, args); 5391 5392 if (cs->vp == NULL) { 5393 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5394 goto out; 5395 } 5396 5397 /* 5398 * If there is an unshared filesystem mounted on this vnode, 5399 * do not allow to setattr on this vnode. 5400 */ 5401 if (vn_ismntpt(cs->vp)) { 5402 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5403 goto out; 5404 } 5405 5406 resp->attrsset = 0; 5407 5408 if (rdonly4(cs->exi, cs->vp, req)) { 5409 *cs->statusp = resp->status = NFS4ERR_ROFS; 5410 goto out; 5411 } 5412 5413 /* check label before setting attributes */ 5414 if (is_system_labeled()) { 5415 ASSERT(req->rq_label != NULL); 5416 clabel = req->rq_label; 5417 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5418 "got client label from request(1)", 5419 struct svc_req *, req); 5420 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5421 if (!do_rfs_label_check(clabel, cs->vp, 5422 EQUALITY_CHECK, cs->exi)) { 5423 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5424 goto out; 5425 } 5426 } 5427 } 5428 5429 *cs->statusp = resp->status = 5430 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5431 &args->stateid); 5432 5433 out: 5434 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5435 SETATTR4res *, resp); 5436 } 5437 5438 /* ARGSUSED */ 5439 static void 5440 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5441 struct compound_state *cs) 5442 { 5443 /* 5444 * verify and nverify are exactly the same, except that nverify 5445 * succeeds when some argument changed, and verify succeeds when 5446 * when none changed. 5447 */ 5448 5449 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5450 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5451 5452 int error; 5453 struct nfs4_svgetit_arg sarg; 5454 struct statvfs64 sb; 5455 struct nfs4_ntov_table ntov; 5456 5457 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5458 VERIFY4args *, args); 5459 5460 if (cs->vp == NULL) { 5461 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5462 goto out; 5463 } 5464 5465 sarg.sbp = &sb; 5466 sarg.is_referral = B_FALSE; 5467 nfs4_ntov_table_init(&ntov); 5468 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5469 &sarg, &ntov, NFS4ATTR_VERIT); 5470 if (resp->status != NFS4_OK) { 5471 /* 5472 * do_rfs4_set_attrs will try to verify systemwide attrs, 5473 * so could return -1 for "no match". 5474 */ 5475 if (resp->status == -1) 5476 resp->status = NFS4ERR_NOT_SAME; 5477 goto done; 5478 } 5479 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5480 switch (error) { 5481 case 0: 5482 resp->status = NFS4_OK; 5483 break; 5484 case -1: 5485 resp->status = NFS4ERR_NOT_SAME; 5486 break; 5487 default: 5488 resp->status = puterrno4(error); 5489 break; 5490 } 5491 done: 5492 *cs->statusp = resp->status; 5493 nfs4_ntov_table_free(&ntov, &sarg); 5494 out: 5495 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5496 VERIFY4res *, resp); 5497 } 5498 5499 /* ARGSUSED */ 5500 static void 5501 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5502 struct compound_state *cs) 5503 { 5504 /* 5505 * verify and nverify are exactly the same, except that nverify 5506 * succeeds when some argument changed, and verify succeeds when 5507 * when none changed. 5508 */ 5509 5510 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5511 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5512 5513 int error; 5514 struct nfs4_svgetit_arg sarg; 5515 struct statvfs64 sb; 5516 struct nfs4_ntov_table ntov; 5517 5518 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5519 NVERIFY4args *, args); 5520 5521 if (cs->vp == NULL) { 5522 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5523 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5524 NVERIFY4res *, resp); 5525 return; 5526 } 5527 sarg.sbp = &sb; 5528 sarg.is_referral = B_FALSE; 5529 nfs4_ntov_table_init(&ntov); 5530 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5531 &sarg, &ntov, NFS4ATTR_VERIT); 5532 if (resp->status != NFS4_OK) { 5533 /* 5534 * do_rfs4_set_attrs will try to verify systemwide attrs, 5535 * so could return -1 for "no match". 5536 */ 5537 if (resp->status == -1) 5538 resp->status = NFS4_OK; 5539 goto done; 5540 } 5541 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5542 switch (error) { 5543 case 0: 5544 resp->status = NFS4ERR_SAME; 5545 break; 5546 case -1: 5547 resp->status = NFS4_OK; 5548 break; 5549 default: 5550 resp->status = puterrno4(error); 5551 break; 5552 } 5553 done: 5554 *cs->statusp = resp->status; 5555 nfs4_ntov_table_free(&ntov, &sarg); 5556 5557 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5558 NVERIFY4res *, resp); 5559 } 5560 5561 /* 5562 * XXX - This should live in an NFS header file. 5563 */ 5564 #define MAX_IOVECS 12 5565 5566 /* ARGSUSED */ 5567 static void 5568 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5569 struct compound_state *cs) 5570 { 5571 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5572 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5573 int error; 5574 vnode_t *vp; 5575 struct vattr bva; 5576 u_offset_t rlimit; 5577 struct uio uio; 5578 struct iovec iov[MAX_IOVECS]; 5579 struct iovec *iovp; 5580 int iovcnt; 5581 int ioflag; 5582 cred_t *savecred, *cr; 5583 bool_t *deleg = &cs->deleg; 5584 nfsstat4 stat; 5585 int in_crit = 0; 5586 caller_context_t ct; 5587 5588 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5589 WRITE4args *, args); 5590 5591 vp = cs->vp; 5592 if (vp == NULL) { 5593 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5594 goto out; 5595 } 5596 if (cs->access == CS_ACCESS_DENIED) { 5597 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5598 goto out; 5599 } 5600 5601 cr = cs->cr; 5602 5603 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5604 deleg, TRUE, &ct)) != NFS4_OK) { 5605 *cs->statusp = resp->status = stat; 5606 goto out; 5607 } 5608 5609 /* 5610 * We have to enter the critical region before calling VOP_RWLOCK 5611 * to avoid a deadlock with ufs. 5612 */ 5613 if (nbl_need_check(vp)) { 5614 nbl_start_crit(vp, RW_READER); 5615 in_crit = 1; 5616 if (nbl_conflict(vp, NBL_WRITE, 5617 args->offset, args->data_len, 0, &ct)) { 5618 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5619 goto out; 5620 } 5621 } 5622 5623 bva.va_mask = AT_MODE | AT_UID; 5624 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5625 5626 /* 5627 * If we can't get the attributes, then we can't do the 5628 * right access checking. So, we'll fail the request. 5629 */ 5630 if (error) { 5631 *cs->statusp = resp->status = puterrno4(error); 5632 goto out; 5633 } 5634 5635 if (rdonly4(cs->exi, cs->vp, req)) { 5636 *cs->statusp = resp->status = NFS4ERR_ROFS; 5637 goto out; 5638 } 5639 5640 if (vp->v_type != VREG) { 5641 *cs->statusp = resp->status = 5642 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5643 goto out; 5644 } 5645 5646 if (crgetuid(cr) != bva.va_uid && 5647 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5648 *cs->statusp = resp->status = puterrno4(error); 5649 goto out; 5650 } 5651 5652 if (MANDLOCK(vp, bva.va_mode)) { 5653 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5654 goto out; 5655 } 5656 5657 if (args->data_len == 0) { 5658 *cs->statusp = resp->status = NFS4_OK; 5659 resp->count = 0; 5660 resp->committed = args->stable; 5661 resp->writeverf = Write4verf; 5662 goto out; 5663 } 5664 5665 if (args->mblk != NULL) { 5666 mblk_t *m; 5667 uint_t bytes, round_len; 5668 5669 iovcnt = 0; 5670 bytes = 0; 5671 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5672 for (m = args->mblk; 5673 m != NULL && bytes < round_len; 5674 m = m->b_cont) { 5675 iovcnt++; 5676 bytes += MBLKL(m); 5677 } 5678 #ifdef DEBUG 5679 /* should have ended on an mblk boundary */ 5680 if (bytes != round_len) { 5681 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5682 bytes, round_len, args->data_len); 5683 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5684 (void *)args->mblk, (void *)m); 5685 ASSERT(bytes == round_len); 5686 } 5687 #endif 5688 if (iovcnt <= MAX_IOVECS) { 5689 iovp = iov; 5690 } else { 5691 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5692 } 5693 mblk_to_iov(args->mblk, iovcnt, iovp); 5694 } else if (args->rlist != NULL) { 5695 iovcnt = 1; 5696 iovp = iov; 5697 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5698 iovp->iov_len = args->data_len; 5699 } else { 5700 iovcnt = 1; 5701 iovp = iov; 5702 iovp->iov_base = args->data_val; 5703 iovp->iov_len = args->data_len; 5704 } 5705 5706 uio.uio_iov = iovp; 5707 uio.uio_iovcnt = iovcnt; 5708 5709 uio.uio_segflg = UIO_SYSSPACE; 5710 uio.uio_extflg = UIO_COPY_DEFAULT; 5711 uio.uio_loffset = args->offset; 5712 uio.uio_resid = args->data_len; 5713 uio.uio_llimit = curproc->p_fsz_ctl; 5714 rlimit = uio.uio_llimit - args->offset; 5715 if (rlimit < (u_offset_t)uio.uio_resid) 5716 uio.uio_resid = (int)rlimit; 5717 5718 if (args->stable == UNSTABLE4) 5719 ioflag = 0; 5720 else if (args->stable == FILE_SYNC4) 5721 ioflag = FSYNC; 5722 else if (args->stable == DATA_SYNC4) 5723 ioflag = FDSYNC; 5724 else { 5725 if (iovp != iov) 5726 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5727 *cs->statusp = resp->status = NFS4ERR_INVAL; 5728 goto out; 5729 } 5730 5731 /* 5732 * We're changing creds because VM may fault and we need 5733 * the cred of the current thread to be used if quota 5734 * checking is enabled. 5735 */ 5736 savecred = curthread->t_cred; 5737 curthread->t_cred = cr; 5738 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5739 curthread->t_cred = savecred; 5740 5741 if (iovp != iov) 5742 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5743 5744 if (error) { 5745 *cs->statusp = resp->status = puterrno4(error); 5746 goto out; 5747 } 5748 5749 *cs->statusp = resp->status = NFS4_OK; 5750 resp->count = args->data_len - uio.uio_resid; 5751 5752 if (ioflag == 0) 5753 resp->committed = UNSTABLE4; 5754 else 5755 resp->committed = FILE_SYNC4; 5756 5757 resp->writeverf = Write4verf; 5758 5759 out: 5760 if (in_crit) 5761 nbl_end_crit(vp); 5762 5763 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5764 WRITE4res *, resp); 5765 } 5766 5767 5768 /* XXX put in a header file */ 5769 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5770 5771 void 5772 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5773 struct svc_req *req, cred_t *cr, int *rv) 5774 { 5775 uint_t i; 5776 struct compound_state cs; 5777 5778 if (rv != NULL) 5779 *rv = 0; 5780 rfs4_init_compound_state(&cs); 5781 /* 5782 * Form a reply tag by copying over the reqeuest tag. 5783 */ 5784 resp->tag.utf8string_val = 5785 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5786 resp->tag.utf8string_len = args->tag.utf8string_len; 5787 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5788 resp->tag.utf8string_len); 5789 5790 cs.statusp = &resp->status; 5791 cs.req = req; 5792 5793 /* 5794 * XXX for now, minorversion should be zero 5795 */ 5796 if (args->minorversion != NFS4_MINORVERSION) { 5797 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5798 &cs, COMPOUND4args *, args); 5799 resp->array_len = 0; 5800 resp->array = NULL; 5801 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5802 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5803 &cs, COMPOUND4res *, resp); 5804 return; 5805 } 5806 5807 ASSERT(exi == NULL); 5808 ASSERT(cr == NULL); 5809 5810 cr = crget(); 5811 ASSERT(cr != NULL); 5812 5813 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5814 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5815 &cs, COMPOUND4args *, args); 5816 crfree(cr); 5817 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5818 &cs, COMPOUND4res *, resp); 5819 svcerr_badcred(req->rq_xprt); 5820 if (rv != NULL) 5821 *rv = 1; 5822 return; 5823 } 5824 resp->array_len = args->array_len; 5825 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5826 KM_SLEEP); 5827 5828 cs.basecr = cr; 5829 5830 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5831 COMPOUND4args *, args); 5832 5833 /* 5834 * For now, NFS4 compound processing must be protected by 5835 * exported_lock because it can access more than one exportinfo 5836 * per compound and share/unshare can now change multiple 5837 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5838 * per proc (excluding public exinfo), and exi_count design 5839 * is sufficient to protect concurrent execution of NFS2/3 5840 * ops along with unexport. This lock will be removed as 5841 * part of the NFSv4 phase 2 namespace redesign work. 5842 */ 5843 rw_enter(&exported_lock, RW_READER); 5844 5845 /* 5846 * If this is the first compound we've seen, we need to start all 5847 * new instances' grace periods. 5848 */ 5849 if (rfs4_seen_first_compound == 0) { 5850 rfs4_grace_start_new(); 5851 /* 5852 * This must be set after rfs4_grace_start_new(), otherwise 5853 * another thread could proceed past here before the former 5854 * is finished. 5855 */ 5856 rfs4_seen_first_compound = 1; 5857 } 5858 5859 for (i = 0; i < args->array_len && cs.cont; i++) { 5860 nfs_argop4 *argop; 5861 nfs_resop4 *resop; 5862 uint_t op; 5863 5864 argop = &args->array[i]; 5865 resop = &resp->array[i]; 5866 resop->resop = argop->argop; 5867 op = (uint_t)resop->resop; 5868 5869 if (op < rfsv4disp_cnt) { 5870 /* 5871 * Count the individual ops here; NULL and COMPOUND 5872 * are counted in common_dispatch() 5873 */ 5874 rfsproccnt_v4_ptr[op].value.ui64++; 5875 5876 NFS4_DEBUG(rfs4_debug > 1, 5877 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5878 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5879 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5880 rfs4_op_string[op], *cs.statusp)); 5881 if (*cs.statusp != NFS4_OK) 5882 cs.cont = FALSE; 5883 } else { 5884 /* 5885 * This is effectively dead code since XDR code 5886 * will have already returned BADXDR if op doesn't 5887 * decode to legal value. This only done for a 5888 * day when XDR code doesn't verify v4 opcodes. 5889 */ 5890 op = OP_ILLEGAL; 5891 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5892 5893 rfs4_op_illegal(argop, resop, req, &cs); 5894 cs.cont = FALSE; 5895 } 5896 5897 /* 5898 * If not at last op, and if we are to stop, then 5899 * compact the results array. 5900 */ 5901 if ((i + 1) < args->array_len && !cs.cont) { 5902 nfs_resop4 *new_res = kmem_alloc( 5903 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5904 bcopy(resp->array, 5905 new_res, (i+1) * sizeof (nfs_resop4)); 5906 kmem_free(resp->array, 5907 args->array_len * sizeof (nfs_resop4)); 5908 5909 resp->array_len = i + 1; 5910 resp->array = new_res; 5911 } 5912 } 5913 5914 rw_exit(&exported_lock); 5915 5916 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5917 COMPOUND4res *, resp); 5918 5919 if (cs.vp) 5920 VN_RELE(cs.vp); 5921 if (cs.saved_vp) 5922 VN_RELE(cs.saved_vp); 5923 if (cs.saved_fh.nfs_fh4_val) 5924 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5925 5926 if (cs.basecr) 5927 crfree(cs.basecr); 5928 if (cs.cr) 5929 crfree(cs.cr); 5930 /* 5931 * done with this compound request, free the label 5932 */ 5933 5934 if (req->rq_label != NULL) { 5935 kmem_free(req->rq_label, sizeof (bslabel_t)); 5936 req->rq_label = NULL; 5937 } 5938 } 5939 5940 /* 5941 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5942 * XXX zero out the tag and array values. Need to investigate why the 5943 * XXX calls occur, but at least prevent the panic for now. 5944 */ 5945 void 5946 rfs4_compound_free(COMPOUND4res *resp) 5947 { 5948 uint_t i; 5949 5950 if (resp->tag.utf8string_val) { 5951 UTF8STRING_FREE(resp->tag) 5952 } 5953 5954 for (i = 0; i < resp->array_len; i++) { 5955 nfs_resop4 *resop; 5956 uint_t op; 5957 5958 resop = &resp->array[i]; 5959 op = (uint_t)resop->resop; 5960 if (op < rfsv4disp_cnt) { 5961 (*rfsv4disptab[op].dis_resfree)(resop); 5962 } 5963 } 5964 if (resp->array != NULL) { 5965 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5966 } 5967 } 5968 5969 /* 5970 * Process the value of the compound request rpc flags, as a bit-AND 5971 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5972 */ 5973 void 5974 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5975 { 5976 int i; 5977 int flag = RPC_ALL; 5978 5979 for (i = 0; flag && i < args->array_len; i++) { 5980 uint_t op; 5981 5982 op = (uint_t)args->array[i].argop; 5983 5984 if (op < rfsv4disp_cnt) 5985 flag &= rfsv4disptab[op].dis_flags; 5986 else 5987 flag = 0; 5988 } 5989 *flagp = flag; 5990 } 5991 5992 nfsstat4 5993 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5994 { 5995 nfsstat4 e; 5996 5997 rfs4_dbe_lock(cp->rc_dbe); 5998 5999 if (cp->rc_sysidt != LM_NOSYSID) { 6000 *sp = cp->rc_sysidt; 6001 e = NFS4_OK; 6002 6003 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6004 *sp = cp->rc_sysidt; 6005 e = NFS4_OK; 6006 6007 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6008 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6009 } else 6010 e = NFS4ERR_DELAY; 6011 6012 rfs4_dbe_unlock(cp->rc_dbe); 6013 return (e); 6014 } 6015 6016 #if defined(DEBUG) && ! defined(lint) 6017 static void lock_print(char *str, int operation, struct flock64 *flk) 6018 { 6019 char *op, *type; 6020 6021 switch (operation) { 6022 case F_GETLK: op = "F_GETLK"; 6023 break; 6024 case F_SETLK: op = "F_SETLK"; 6025 break; 6026 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6027 break; 6028 default: op = "F_UNKNOWN"; 6029 break; 6030 } 6031 switch (flk->l_type) { 6032 case F_UNLCK: type = "F_UNLCK"; 6033 break; 6034 case F_RDLCK: type = "F_RDLCK"; 6035 break; 6036 case F_WRLCK: type = "F_WRLCK"; 6037 break; 6038 default: type = "F_UNKNOWN"; 6039 break; 6040 } 6041 6042 ASSERT(flk->l_whence == 0); 6043 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6044 str, op, type, (longlong_t)flk->l_start, 6045 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6046 } 6047 6048 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6049 #else 6050 #define LOCK_PRINT(d, s, t, f) 6051 #endif 6052 6053 /*ARGSUSED*/ 6054 static bool_t 6055 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6056 { 6057 return (TRUE); 6058 } 6059 6060 /* 6061 * Look up the pathname using the vp in cs as the directory vnode. 6062 * cs->vp will be the vnode for the file on success 6063 */ 6064 6065 static nfsstat4 6066 rfs4_lookup(component4 *component, struct svc_req *req, 6067 struct compound_state *cs) 6068 { 6069 char *nm; 6070 uint32_t len; 6071 nfsstat4 status; 6072 struct sockaddr *ca; 6073 char *name; 6074 6075 if (cs->vp == NULL) { 6076 return (NFS4ERR_NOFILEHANDLE); 6077 } 6078 if (cs->vp->v_type != VDIR) { 6079 return (NFS4ERR_NOTDIR); 6080 } 6081 6082 if (!utf8_dir_verify(component)) 6083 return (NFS4ERR_INVAL); 6084 6085 nm = utf8_to_fn(component, &len, NULL); 6086 if (nm == NULL) { 6087 return (NFS4ERR_INVAL); 6088 } 6089 6090 if (len > MAXNAMELEN) { 6091 kmem_free(nm, len); 6092 return (NFS4ERR_NAMETOOLONG); 6093 } 6094 6095 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6096 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6097 MAXPATHLEN + 1); 6098 6099 if (name == NULL) { 6100 kmem_free(nm, len); 6101 return (NFS4ERR_INVAL); 6102 } 6103 6104 status = do_rfs4_op_lookup(name, req, cs); 6105 6106 if (name != nm) 6107 kmem_free(name, MAXPATHLEN + 1); 6108 6109 kmem_free(nm, len); 6110 6111 return (status); 6112 } 6113 6114 static nfsstat4 6115 rfs4_lookupfile(component4 *component, struct svc_req *req, 6116 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6117 { 6118 nfsstat4 status; 6119 vnode_t *dvp = cs->vp; 6120 vattr_t bva, ava, fva; 6121 int error; 6122 6123 /* Get "before" change value */ 6124 bva.va_mask = AT_CTIME|AT_SEQ; 6125 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6126 if (error) 6127 return (puterrno4(error)); 6128 6129 /* rfs4_lookup may VN_RELE directory */ 6130 VN_HOLD(dvp); 6131 6132 status = rfs4_lookup(component, req, cs); 6133 if (status != NFS4_OK) { 6134 VN_RELE(dvp); 6135 return (status); 6136 } 6137 6138 /* 6139 * Get "after" change value, if it fails, simply return the 6140 * before value. 6141 */ 6142 ava.va_mask = AT_CTIME|AT_SEQ; 6143 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6144 ava.va_ctime = bva.va_ctime; 6145 ava.va_seq = 0; 6146 } 6147 VN_RELE(dvp); 6148 6149 /* 6150 * Validate the file is a file 6151 */ 6152 fva.va_mask = AT_TYPE|AT_MODE; 6153 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6154 if (error) 6155 return (puterrno4(error)); 6156 6157 if (fva.va_type != VREG) { 6158 if (fva.va_type == VDIR) 6159 return (NFS4ERR_ISDIR); 6160 if (fva.va_type == VLNK) 6161 return (NFS4ERR_SYMLINK); 6162 return (NFS4ERR_INVAL); 6163 } 6164 6165 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6166 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6167 6168 /* 6169 * It is undefined if VOP_LOOKUP will change va_seq, so 6170 * cinfo.atomic = TRUE only if we have 6171 * non-zero va_seq's, and they have not changed. 6172 */ 6173 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6174 cinfo->atomic = TRUE; 6175 else 6176 cinfo->atomic = FALSE; 6177 6178 /* Check for mandatory locking */ 6179 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6180 return (check_open_access(access, cs, req)); 6181 } 6182 6183 static nfsstat4 6184 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6185 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6186 { 6187 int error; 6188 nfsstat4 status = NFS4_OK; 6189 vattr_t va; 6190 6191 tryagain: 6192 6193 /* 6194 * The file open mode used is VWRITE. If the client needs 6195 * some other semantic, then it should do the access checking 6196 * itself. It would have been nice to have the file open mode 6197 * passed as part of the arguments. 6198 */ 6199 6200 *created = TRUE; 6201 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6202 6203 if (error) { 6204 *created = FALSE; 6205 6206 /* 6207 * If we got something other than file already exists 6208 * then just return this error. Otherwise, we got 6209 * EEXIST. If we were doing a GUARDED create, then 6210 * just return this error. Otherwise, we need to 6211 * make sure that this wasn't a duplicate of an 6212 * exclusive create request. 6213 * 6214 * The assumption is made that a non-exclusive create 6215 * request will never return EEXIST. 6216 */ 6217 6218 if (error != EEXIST || mode == GUARDED4) { 6219 status = puterrno4(error); 6220 return (status); 6221 } 6222 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6223 NULL, NULL, NULL); 6224 6225 if (error) { 6226 /* 6227 * We couldn't find the file that we thought that 6228 * we just created. So, we'll just try creating 6229 * it again. 6230 */ 6231 if (error == ENOENT) 6232 goto tryagain; 6233 6234 status = puterrno4(error); 6235 return (status); 6236 } 6237 6238 if (mode == UNCHECKED4) { 6239 /* existing object must be regular file */ 6240 if ((*vpp)->v_type != VREG) { 6241 if ((*vpp)->v_type == VDIR) 6242 status = NFS4ERR_ISDIR; 6243 else if ((*vpp)->v_type == VLNK) 6244 status = NFS4ERR_SYMLINK; 6245 else 6246 status = NFS4ERR_INVAL; 6247 VN_RELE(*vpp); 6248 return (status); 6249 } 6250 6251 return (NFS4_OK); 6252 } 6253 6254 /* Check for duplicate request */ 6255 ASSERT(mtime != 0); 6256 va.va_mask = AT_MTIME; 6257 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6258 if (!error) { 6259 /* We found the file */ 6260 if (va.va_mtime.tv_sec != mtime->tv_sec || 6261 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6262 /* but its not our creation */ 6263 VN_RELE(*vpp); 6264 return (NFS4ERR_EXIST); 6265 } 6266 *created = TRUE; /* retrans of create == created */ 6267 return (NFS4_OK); 6268 } 6269 VN_RELE(*vpp); 6270 return (NFS4ERR_EXIST); 6271 } 6272 6273 return (NFS4_OK); 6274 } 6275 6276 static nfsstat4 6277 check_open_access(uint32_t access, struct compound_state *cs, 6278 struct svc_req *req) 6279 { 6280 int error; 6281 vnode_t *vp; 6282 bool_t readonly; 6283 cred_t *cr = cs->cr; 6284 6285 /* For now we don't allow mandatory locking as per V2/V3 */ 6286 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6287 return (NFS4ERR_ACCESS); 6288 } 6289 6290 vp = cs->vp; 6291 ASSERT(cr != NULL && vp->v_type == VREG); 6292 6293 /* 6294 * If the file system is exported read only and we are trying 6295 * to open for write, then return NFS4ERR_ROFS 6296 */ 6297 6298 readonly = rdonly4(cs->exi, cs->vp, req); 6299 6300 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6301 return (NFS4ERR_ROFS); 6302 6303 if (access & OPEN4_SHARE_ACCESS_READ) { 6304 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6305 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6306 return (NFS4ERR_ACCESS); 6307 } 6308 } 6309 6310 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6311 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6312 if (error) 6313 return (NFS4ERR_ACCESS); 6314 } 6315 6316 return (NFS4_OK); 6317 } 6318 6319 static nfsstat4 6320 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6321 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6322 { 6323 struct nfs4_svgetit_arg sarg; 6324 struct nfs4_ntov_table ntov; 6325 6326 bool_t ntov_table_init = FALSE; 6327 struct statvfs64 sb; 6328 nfsstat4 status; 6329 vnode_t *vp; 6330 vattr_t bva, ava, iva, cva, *vap; 6331 vnode_t *dvp; 6332 timespec32_t *mtime; 6333 char *nm = NULL; 6334 uint_t buflen; 6335 bool_t created; 6336 bool_t setsize = FALSE; 6337 len_t reqsize; 6338 int error; 6339 bool_t trunc; 6340 caller_context_t ct; 6341 component4 *component; 6342 bslabel_t *clabel; 6343 struct sockaddr *ca; 6344 char *name = NULL; 6345 6346 sarg.sbp = &sb; 6347 sarg.is_referral = B_FALSE; 6348 6349 dvp = cs->vp; 6350 6351 /* Check if the file system is read only */ 6352 if (rdonly4(cs->exi, dvp, req)) 6353 return (NFS4ERR_ROFS); 6354 6355 /* check the label of including directory */ 6356 if (is_system_labeled()) { 6357 ASSERT(req->rq_label != NULL); 6358 clabel = req->rq_label; 6359 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6360 "got client label from request(1)", 6361 struct svc_req *, req); 6362 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6363 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6364 cs->exi)) { 6365 return (NFS4ERR_ACCESS); 6366 } 6367 } 6368 } 6369 6370 /* 6371 * Get the last component of path name in nm. cs will reference 6372 * the including directory on success. 6373 */ 6374 component = &args->open_claim4_u.file; 6375 if (!utf8_dir_verify(component)) 6376 return (NFS4ERR_INVAL); 6377 6378 nm = utf8_to_fn(component, &buflen, NULL); 6379 6380 if (nm == NULL) 6381 return (NFS4ERR_RESOURCE); 6382 6383 if (buflen > MAXNAMELEN) { 6384 kmem_free(nm, buflen); 6385 return (NFS4ERR_NAMETOOLONG); 6386 } 6387 6388 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6389 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6390 if (error) { 6391 kmem_free(nm, buflen); 6392 return (puterrno4(error)); 6393 } 6394 6395 if (bva.va_type != VDIR) { 6396 kmem_free(nm, buflen); 6397 return (NFS4ERR_NOTDIR); 6398 } 6399 6400 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6401 6402 switch (args->mode) { 6403 case GUARDED4: 6404 /*FALLTHROUGH*/ 6405 case UNCHECKED4: 6406 nfs4_ntov_table_init(&ntov); 6407 ntov_table_init = TRUE; 6408 6409 *attrset = 0; 6410 status = do_rfs4_set_attrs(attrset, 6411 &args->createhow4_u.createattrs, 6412 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6413 6414 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6415 sarg.vap->va_type != VREG) { 6416 if (sarg.vap->va_type == VDIR) 6417 status = NFS4ERR_ISDIR; 6418 else if (sarg.vap->va_type == VLNK) 6419 status = NFS4ERR_SYMLINK; 6420 else 6421 status = NFS4ERR_INVAL; 6422 } 6423 6424 if (status != NFS4_OK) { 6425 kmem_free(nm, buflen); 6426 nfs4_ntov_table_free(&ntov, &sarg); 6427 *attrset = 0; 6428 return (status); 6429 } 6430 6431 vap = sarg.vap; 6432 vap->va_type = VREG; 6433 vap->va_mask |= AT_TYPE; 6434 6435 if ((vap->va_mask & AT_MODE) == 0) { 6436 vap->va_mask |= AT_MODE; 6437 vap->va_mode = (mode_t)0600; 6438 } 6439 6440 if (vap->va_mask & AT_SIZE) { 6441 6442 /* Disallow create with a non-zero size */ 6443 6444 if ((reqsize = sarg.vap->va_size) != 0) { 6445 kmem_free(nm, buflen); 6446 nfs4_ntov_table_free(&ntov, &sarg); 6447 *attrset = 0; 6448 return (NFS4ERR_INVAL); 6449 } 6450 setsize = TRUE; 6451 } 6452 break; 6453 6454 case EXCLUSIVE4: 6455 /* prohibit EXCL create of named attributes */ 6456 if (dvp->v_flag & V_XATTRDIR) { 6457 kmem_free(nm, buflen); 6458 *attrset = 0; 6459 return (NFS4ERR_INVAL); 6460 } 6461 6462 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6463 cva.va_type = VREG; 6464 /* 6465 * Ensure no time overflows. Assumes underlying 6466 * filesystem supports at least 32 bits. 6467 * Truncate nsec to usec resolution to allow valid 6468 * compares even if the underlying filesystem truncates. 6469 */ 6470 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6471 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6472 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6473 cva.va_mode = (mode_t)0; 6474 vap = &cva; 6475 6476 /* 6477 * For EXCL create, attrset is set to the server attr 6478 * used to cache the client's verifier. 6479 */ 6480 *attrset = FATTR4_TIME_MODIFY_MASK; 6481 break; 6482 } 6483 6484 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6485 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6486 MAXPATHLEN + 1); 6487 6488 if (name == NULL) { 6489 kmem_free(nm, buflen); 6490 return (NFS4ERR_SERVERFAULT); 6491 } 6492 6493 status = create_vnode(dvp, name, vap, args->mode, mtime, 6494 cs->cr, &vp, &created); 6495 if (nm != name) 6496 kmem_free(name, MAXPATHLEN + 1); 6497 kmem_free(nm, buflen); 6498 6499 if (status != NFS4_OK) { 6500 if (ntov_table_init) 6501 nfs4_ntov_table_free(&ntov, &sarg); 6502 *attrset = 0; 6503 return (status); 6504 } 6505 6506 trunc = (setsize && !created); 6507 6508 if (args->mode != EXCLUSIVE4) { 6509 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6510 6511 /* 6512 * True verification that object was created with correct 6513 * attrs is impossible. The attrs could have been changed 6514 * immediately after object creation. If attributes did 6515 * not verify, the only recourse for the server is to 6516 * destroy the object. Maybe if some attrs (like gid) 6517 * are set incorrectly, the object should be destroyed; 6518 * however, seems bad as a default policy. Do we really 6519 * want to destroy an object over one of the times not 6520 * verifying correctly? For these reasons, the server 6521 * currently sets bits in attrset for createattrs 6522 * that were set; however, no verification is done. 6523 * 6524 * vmask_to_nmask accounts for vattr bits set on create 6525 * [do_rfs4_set_attrs() only sets resp bits for 6526 * non-vattr/vfs bits.] 6527 * Mask off any bits we set by default so as not to return 6528 * more attrset bits than were requested in createattrs 6529 */ 6530 if (created) { 6531 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6532 *attrset &= createmask; 6533 } else { 6534 /* 6535 * We did not create the vnode (we tried but it 6536 * already existed). In this case, the only createattr 6537 * that the spec allows the server to set is size, 6538 * and even then, it can only be set if it is 0. 6539 */ 6540 *attrset = 0; 6541 if (trunc) 6542 *attrset = FATTR4_SIZE_MASK; 6543 } 6544 } 6545 if (ntov_table_init) 6546 nfs4_ntov_table_free(&ntov, &sarg); 6547 6548 /* 6549 * Get the initial "after" sequence number, if it fails, 6550 * set to zero, time to before. 6551 */ 6552 iva.va_mask = AT_CTIME|AT_SEQ; 6553 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6554 iva.va_seq = 0; 6555 iva.va_ctime = bva.va_ctime; 6556 } 6557 6558 /* 6559 * create_vnode attempts to create the file exclusive, 6560 * if it already exists the VOP_CREATE will fail and 6561 * may not increase va_seq. It is atomic if 6562 * we haven't changed the directory, but if it has changed 6563 * we don't know what changed it. 6564 */ 6565 if (!created) { 6566 if (bva.va_seq && iva.va_seq && 6567 bva.va_seq == iva.va_seq) 6568 cinfo->atomic = TRUE; 6569 else 6570 cinfo->atomic = FALSE; 6571 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6572 } else { 6573 /* 6574 * The entry was created, we need to sync the 6575 * directory metadata. 6576 */ 6577 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6578 6579 /* 6580 * Get "after" change value, if it fails, simply return the 6581 * before value. 6582 */ 6583 ava.va_mask = AT_CTIME|AT_SEQ; 6584 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6585 ava.va_ctime = bva.va_ctime; 6586 ava.va_seq = 0; 6587 } 6588 6589 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6590 6591 /* 6592 * The cinfo->atomic = TRUE only if we have 6593 * non-zero va_seq's, and it has incremented by exactly one 6594 * during the create_vnode and it didn't 6595 * change during the VOP_FSYNC. 6596 */ 6597 if (bva.va_seq && iva.va_seq && ava.va_seq && 6598 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6599 cinfo->atomic = TRUE; 6600 else 6601 cinfo->atomic = FALSE; 6602 } 6603 6604 /* Check for mandatory locking and that the size gets set. */ 6605 cva.va_mask = AT_MODE; 6606 if (setsize) 6607 cva.va_mask |= AT_SIZE; 6608 6609 /* Assume the worst */ 6610 cs->mandlock = TRUE; 6611 6612 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6613 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6614 6615 /* 6616 * Truncate the file if necessary; this would be 6617 * the case for create over an existing file. 6618 */ 6619 6620 if (trunc) { 6621 int in_crit = 0; 6622 rfs4_file_t *fp; 6623 bool_t create = FALSE; 6624 6625 /* 6626 * We are writing over an existing file. 6627 * Check to see if we need to recall a delegation. 6628 */ 6629 rfs4_hold_deleg_policy(); 6630 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6631 if (rfs4_check_delegated_byfp(FWRITE, fp, 6632 (reqsize == 0), FALSE, FALSE, &clientid)) { 6633 rfs4_file_rele(fp); 6634 rfs4_rele_deleg_policy(); 6635 VN_RELE(vp); 6636 *attrset = 0; 6637 return (NFS4ERR_DELAY); 6638 } 6639 rfs4_file_rele(fp); 6640 } 6641 rfs4_rele_deleg_policy(); 6642 6643 if (nbl_need_check(vp)) { 6644 in_crit = 1; 6645 6646 ASSERT(reqsize == 0); 6647 6648 nbl_start_crit(vp, RW_READER); 6649 if (nbl_conflict(vp, NBL_WRITE, 0, 6650 cva.va_size, 0, NULL)) { 6651 in_crit = 0; 6652 nbl_end_crit(vp); 6653 VN_RELE(vp); 6654 *attrset = 0; 6655 return (NFS4ERR_ACCESS); 6656 } 6657 } 6658 ct.cc_sysid = 0; 6659 ct.cc_pid = 0; 6660 ct.cc_caller_id = nfs4_srv_caller_id; 6661 ct.cc_flags = CC_DONTBLOCK; 6662 6663 cva.va_mask = AT_SIZE; 6664 cva.va_size = reqsize; 6665 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6666 if (in_crit) 6667 nbl_end_crit(vp); 6668 } 6669 } 6670 6671 error = makefh4(&cs->fh, vp, cs->exi); 6672 6673 /* 6674 * Force modified data and metadata out to stable storage. 6675 */ 6676 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6677 6678 if (error) { 6679 VN_RELE(vp); 6680 *attrset = 0; 6681 return (puterrno4(error)); 6682 } 6683 6684 /* if parent dir is attrdir, set namedattr fh flag */ 6685 if (dvp->v_flag & V_XATTRDIR) 6686 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6687 6688 if (cs->vp) 6689 VN_RELE(cs->vp); 6690 6691 cs->vp = vp; 6692 6693 /* 6694 * if we did not create the file, we will need to check 6695 * the access bits on the file 6696 */ 6697 6698 if (!created) { 6699 if (setsize) 6700 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6701 status = check_open_access(args->share_access, cs, req); 6702 if (status != NFS4_OK) 6703 *attrset = 0; 6704 } 6705 return (status); 6706 } 6707 6708 /*ARGSUSED*/ 6709 static void 6710 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6711 rfs4_openowner_t *oo, delegreq_t deleg, 6712 uint32_t access, uint32_t deny, 6713 OPEN4res *resp, int deleg_cur) 6714 { 6715 /* XXX Currently not using req */ 6716 rfs4_state_t *sp; 6717 rfs4_file_t *fp; 6718 bool_t screate = TRUE; 6719 bool_t fcreate = TRUE; 6720 uint32_t open_a, share_a; 6721 uint32_t open_d, share_d; 6722 rfs4_deleg_state_t *dsp; 6723 sysid_t sysid; 6724 nfsstat4 status; 6725 caller_context_t ct; 6726 int fflags = 0; 6727 int recall = 0; 6728 int err; 6729 int first_open; 6730 6731 /* get the file struct and hold a lock on it during initial open */ 6732 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6733 if (fp == NULL) { 6734 resp->status = NFS4ERR_RESOURCE; 6735 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6736 return; 6737 } 6738 6739 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6740 if (sp == NULL) { 6741 resp->status = NFS4ERR_RESOURCE; 6742 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6743 /* No need to keep any reference */ 6744 rw_exit(&fp->rf_file_rwlock); 6745 rfs4_file_rele(fp); 6746 return; 6747 } 6748 6749 /* try to get the sysid before continuing */ 6750 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6751 resp->status = status; 6752 rfs4_file_rele(fp); 6753 /* Not a fully formed open; "close" it */ 6754 if (screate == TRUE) 6755 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6756 rfs4_state_rele(sp); 6757 return; 6758 } 6759 6760 /* Calculate the fflags for this OPEN. */ 6761 if (access & OPEN4_SHARE_ACCESS_READ) 6762 fflags |= FREAD; 6763 if (access & OPEN4_SHARE_ACCESS_WRITE) 6764 fflags |= FWRITE; 6765 6766 rfs4_dbe_lock(sp->rs_dbe); 6767 6768 /* 6769 * Calculate the new deny and access mode that this open is adding to 6770 * the file for this open owner; 6771 */ 6772 open_d = (deny & ~sp->rs_open_deny); 6773 open_a = (access & ~sp->rs_open_access); 6774 6775 /* 6776 * Calculate the new share access and share deny modes that this open 6777 * is adding to the file for this open owner; 6778 */ 6779 share_a = (access & ~sp->rs_share_access); 6780 share_d = (deny & ~sp->rs_share_deny); 6781 6782 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6783 6784 /* 6785 * Check to see the client has already sent an open for this 6786 * open owner on this file with the same share/deny modes. 6787 * If so, we don't need to check for a conflict and we don't 6788 * need to add another shrlock. If not, then we need to 6789 * check for conflicts in deny and access before checking for 6790 * conflicts in delegation. We don't want to recall a 6791 * delegation based on an open that will eventually fail based 6792 * on shares modes. 6793 */ 6794 6795 if (share_a || share_d) { 6796 if ((err = rfs4_share(sp, access, deny)) != 0) { 6797 rfs4_dbe_unlock(sp->rs_dbe); 6798 resp->status = err; 6799 6800 rfs4_file_rele(fp); 6801 /* Not a fully formed open; "close" it */ 6802 if (screate == TRUE) 6803 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6804 rfs4_state_rele(sp); 6805 return; 6806 } 6807 } 6808 6809 rfs4_dbe_lock(fp->rf_dbe); 6810 6811 /* 6812 * Check to see if this file is delegated and if so, if a 6813 * recall needs to be done. 6814 */ 6815 if (rfs4_check_recall(sp, access)) { 6816 rfs4_dbe_unlock(fp->rf_dbe); 6817 rfs4_dbe_unlock(sp->rs_dbe); 6818 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6819 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6820 rfs4_dbe_lock(sp->rs_dbe); 6821 6822 /* if state closed while lock was dropped */ 6823 if (sp->rs_closed) { 6824 if (share_a || share_d) 6825 (void) rfs4_unshare(sp); 6826 rfs4_dbe_unlock(sp->rs_dbe); 6827 rfs4_file_rele(fp); 6828 /* Not a fully formed open; "close" it */ 6829 if (screate == TRUE) 6830 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6831 rfs4_state_rele(sp); 6832 resp->status = NFS4ERR_OLD_STATEID; 6833 return; 6834 } 6835 6836 rfs4_dbe_lock(fp->rf_dbe); 6837 /* Let's see if the delegation was returned */ 6838 if (rfs4_check_recall(sp, access)) { 6839 rfs4_dbe_unlock(fp->rf_dbe); 6840 if (share_a || share_d) 6841 (void) rfs4_unshare(sp); 6842 rfs4_dbe_unlock(sp->rs_dbe); 6843 rfs4_file_rele(fp); 6844 rfs4_update_lease(sp->rs_owner->ro_client); 6845 6846 /* Not a fully formed open; "close" it */ 6847 if (screate == TRUE) 6848 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6849 rfs4_state_rele(sp); 6850 resp->status = NFS4ERR_DELAY; 6851 return; 6852 } 6853 } 6854 /* 6855 * the share check passed and any delegation conflict has been 6856 * taken care of, now call vop_open. 6857 * if this is the first open then call vop_open with fflags. 6858 * if not, call vn_open_upgrade with just the upgrade flags. 6859 * 6860 * if the file has been opened already, it will have the current 6861 * access mode in the state struct. if it has no share access, then 6862 * this is a new open. 6863 * 6864 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6865 * call VOP_OPEN(), just do the open upgrade. 6866 */ 6867 if (first_open && !deleg_cur) { 6868 ct.cc_sysid = sysid; 6869 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6870 ct.cc_caller_id = nfs4_srv_caller_id; 6871 ct.cc_flags = CC_DONTBLOCK; 6872 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6873 if (err) { 6874 rfs4_dbe_unlock(fp->rf_dbe); 6875 if (share_a || share_d) 6876 (void) rfs4_unshare(sp); 6877 rfs4_dbe_unlock(sp->rs_dbe); 6878 rfs4_file_rele(fp); 6879 6880 /* Not a fully formed open; "close" it */ 6881 if (screate == TRUE) 6882 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6883 rfs4_state_rele(sp); 6884 /* check if a monitor detected a delegation conflict */ 6885 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6886 resp->status = NFS4ERR_DELAY; 6887 else 6888 resp->status = NFS4ERR_SERVERFAULT; 6889 return; 6890 } 6891 } else { /* open upgrade */ 6892 /* 6893 * calculate the fflags for the new mode that is being added 6894 * by this upgrade. 6895 */ 6896 fflags = 0; 6897 if (open_a & OPEN4_SHARE_ACCESS_READ) 6898 fflags |= FREAD; 6899 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6900 fflags |= FWRITE; 6901 vn_open_upgrade(cs->vp, fflags); 6902 } 6903 sp->rs_open_access |= access; 6904 sp->rs_open_deny |= deny; 6905 6906 if (open_d & OPEN4_SHARE_DENY_READ) 6907 fp->rf_deny_read++; 6908 if (open_d & OPEN4_SHARE_DENY_WRITE) 6909 fp->rf_deny_write++; 6910 fp->rf_share_deny |= deny; 6911 6912 if (open_a & OPEN4_SHARE_ACCESS_READ) 6913 fp->rf_access_read++; 6914 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6915 fp->rf_access_write++; 6916 fp->rf_share_access |= access; 6917 6918 /* 6919 * Check for delegation here. if the deleg argument is not 6920 * DELEG_ANY, then this is a reclaim from a client and 6921 * we must honor the delegation requested. If necessary we can 6922 * set the recall flag. 6923 */ 6924 6925 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6926 6927 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6928 6929 next_stateid(&sp->rs_stateid); 6930 6931 resp->stateid = sp->rs_stateid.stateid; 6932 6933 rfs4_dbe_unlock(fp->rf_dbe); 6934 rfs4_dbe_unlock(sp->rs_dbe); 6935 6936 if (dsp) { 6937 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6938 rfs4_deleg_state_rele(dsp); 6939 } 6940 6941 rfs4_file_rele(fp); 6942 rfs4_state_rele(sp); 6943 6944 resp->status = NFS4_OK; 6945 } 6946 6947 /*ARGSUSED*/ 6948 static void 6949 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6950 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6951 { 6952 change_info4 *cinfo = &resp->cinfo; 6953 bitmap4 *attrset = &resp->attrset; 6954 6955 if (args->opentype == OPEN4_NOCREATE) 6956 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6957 req, cs, args->share_access, cinfo); 6958 else { 6959 /* inhibit delegation grants during exclusive create */ 6960 6961 if (args->mode == EXCLUSIVE4) 6962 rfs4_disable_delegation(); 6963 6964 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6965 oo->ro_client->rc_clientid); 6966 } 6967 6968 if (resp->status == NFS4_OK) { 6969 6970 /* cs->vp cs->fh now reference the desired file */ 6971 6972 rfs4_do_open(cs, req, oo, 6973 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 6974 args->share_access, args->share_deny, resp, 0); 6975 6976 /* 6977 * If rfs4_createfile set attrset, we must 6978 * clear this attrset before the response is copied. 6979 */ 6980 if (resp->status != NFS4_OK && resp->attrset) { 6981 resp->attrset = 0; 6982 } 6983 } 6984 else 6985 *cs->statusp = resp->status; 6986 6987 if (args->mode == EXCLUSIVE4) 6988 rfs4_enable_delegation(); 6989 } 6990 6991 /*ARGSUSED*/ 6992 static void 6993 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6994 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6995 { 6996 change_info4 *cinfo = &resp->cinfo; 6997 vattr_t va; 6998 vtype_t v_type = cs->vp->v_type; 6999 int error = 0; 7000 7001 /* Verify that we have a regular file */ 7002 if (v_type != VREG) { 7003 if (v_type == VDIR) 7004 resp->status = NFS4ERR_ISDIR; 7005 else if (v_type == VLNK) 7006 resp->status = NFS4ERR_SYMLINK; 7007 else 7008 resp->status = NFS4ERR_INVAL; 7009 return; 7010 } 7011 7012 va.va_mask = AT_MODE|AT_UID; 7013 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7014 if (error) { 7015 resp->status = puterrno4(error); 7016 return; 7017 } 7018 7019 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7020 7021 /* 7022 * Check if we have access to the file, Note the the file 7023 * could have originally been open UNCHECKED or GUARDED 7024 * with mode bits that will now fail, but there is nothing 7025 * we can really do about that except in the case that the 7026 * owner of the file is the one requesting the open. 7027 */ 7028 if (crgetuid(cs->cr) != va.va_uid) { 7029 resp->status = check_open_access(args->share_access, cs, req); 7030 if (resp->status != NFS4_OK) { 7031 return; 7032 } 7033 } 7034 7035 /* 7036 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7037 */ 7038 cinfo->before = 0; 7039 cinfo->after = 0; 7040 cinfo->atomic = FALSE; 7041 7042 rfs4_do_open(cs, req, oo, 7043 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7044 args->share_access, args->share_deny, resp, 0); 7045 } 7046 7047 static void 7048 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7049 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7050 { 7051 int error; 7052 nfsstat4 status; 7053 stateid4 stateid = 7054 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7055 rfs4_deleg_state_t *dsp; 7056 7057 /* 7058 * Find the state info from the stateid and confirm that the 7059 * file is delegated. If the state openowner is the same as 7060 * the supplied openowner we're done. If not, get the file 7061 * info from the found state info. Use that file info to 7062 * create the state for this lock owner. Note solaris doen't 7063 * really need the pathname to find the file. We may want to 7064 * lookup the pathname and make sure that the vp exist and 7065 * matches the vp in the file structure. However it is 7066 * possible that the pathname nolonger exists (local process 7067 * unlinks the file), so this may not be that useful. 7068 */ 7069 7070 status = rfs4_get_deleg_state(&stateid, &dsp); 7071 if (status != NFS4_OK) { 7072 resp->status = status; 7073 return; 7074 } 7075 7076 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7077 7078 /* 7079 * New lock owner, create state. Since this was probably called 7080 * in response to a CB_RECALL we set deleg to DELEG_NONE 7081 */ 7082 7083 ASSERT(cs->vp != NULL); 7084 VN_RELE(cs->vp); 7085 VN_HOLD(dsp->rds_finfo->rf_vp); 7086 cs->vp = dsp->rds_finfo->rf_vp; 7087 7088 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7089 rfs4_deleg_state_rele(dsp); 7090 *cs->statusp = resp->status = puterrno4(error); 7091 return; 7092 } 7093 7094 /* Mark progress for delegation returns */ 7095 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7096 rfs4_deleg_state_rele(dsp); 7097 rfs4_do_open(cs, req, oo, DELEG_NONE, 7098 args->share_access, args->share_deny, resp, 1); 7099 } 7100 7101 /*ARGSUSED*/ 7102 static void 7103 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7104 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7105 { 7106 /* 7107 * Lookup the pathname, it must already exist since this file 7108 * was delegated. 7109 * 7110 * Find the file and state info for this vp and open owner pair. 7111 * check that they are in fact delegated. 7112 * check that the state access and deny modes are the same. 7113 * 7114 * Return the delgation possibly seting the recall flag. 7115 */ 7116 rfs4_file_t *fp; 7117 rfs4_state_t *sp; 7118 bool_t create = FALSE; 7119 bool_t dcreate = FALSE; 7120 rfs4_deleg_state_t *dsp; 7121 nfsace4 *ace; 7122 7123 /* Note we ignore oflags */ 7124 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7125 req, cs, args->share_access, &resp->cinfo); 7126 7127 if (resp->status != NFS4_OK) { 7128 return; 7129 } 7130 7131 /* get the file struct and hold a lock on it during initial open */ 7132 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7133 if (fp == NULL) { 7134 resp->status = NFS4ERR_RESOURCE; 7135 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7136 return; 7137 } 7138 7139 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7140 if (sp == NULL) { 7141 resp->status = NFS4ERR_SERVERFAULT; 7142 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7143 rw_exit(&fp->rf_file_rwlock); 7144 rfs4_file_rele(fp); 7145 return; 7146 } 7147 7148 rfs4_dbe_lock(sp->rs_dbe); 7149 rfs4_dbe_lock(fp->rf_dbe); 7150 if (args->share_access != sp->rs_share_access || 7151 args->share_deny != sp->rs_share_deny || 7152 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7153 NFS4_DEBUG(rfs4_debug, 7154 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7155 rfs4_dbe_unlock(fp->rf_dbe); 7156 rfs4_dbe_unlock(sp->rs_dbe); 7157 rfs4_file_rele(fp); 7158 rfs4_state_rele(sp); 7159 resp->status = NFS4ERR_SERVERFAULT; 7160 return; 7161 } 7162 rfs4_dbe_unlock(fp->rf_dbe); 7163 rfs4_dbe_unlock(sp->rs_dbe); 7164 7165 dsp = rfs4_finddeleg(sp, &dcreate); 7166 if (dsp == NULL) { 7167 rfs4_state_rele(sp); 7168 rfs4_file_rele(fp); 7169 resp->status = NFS4ERR_SERVERFAULT; 7170 return; 7171 } 7172 7173 next_stateid(&sp->rs_stateid); 7174 7175 resp->stateid = sp->rs_stateid.stateid; 7176 7177 resp->delegation.delegation_type = dsp->rds_dtype; 7178 7179 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7180 open_read_delegation4 *rv = 7181 &resp->delegation.open_delegation4_u.read; 7182 7183 rv->stateid = dsp->rds_delegid.stateid; 7184 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7185 ace = &rv->permissions; 7186 } else { 7187 open_write_delegation4 *rv = 7188 &resp->delegation.open_delegation4_u.write; 7189 7190 rv->stateid = dsp->rds_delegid.stateid; 7191 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7192 ace = &rv->permissions; 7193 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7194 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7195 } 7196 7197 /* XXX For now */ 7198 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7199 ace->flag = 0; 7200 ace->access_mask = 0; 7201 ace->who.utf8string_len = 0; 7202 ace->who.utf8string_val = 0; 7203 7204 rfs4_deleg_state_rele(dsp); 7205 rfs4_state_rele(sp); 7206 rfs4_file_rele(fp); 7207 } 7208 7209 typedef enum { 7210 NFS4_CHKSEQ_OKAY = 0, 7211 NFS4_CHKSEQ_REPLAY = 1, 7212 NFS4_CHKSEQ_BAD = 2 7213 } rfs4_chkseq_t; 7214 7215 /* 7216 * Generic function for sequence number checks. 7217 */ 7218 static rfs4_chkseq_t 7219 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7220 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7221 { 7222 /* Same sequence ids and matching operations? */ 7223 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7224 if (copyres == TRUE) { 7225 rfs4_free_reply(resop); 7226 rfs4_copy_reply(resop, lastop); 7227 } 7228 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7229 "Replayed SEQID %d\n", seqid)); 7230 return (NFS4_CHKSEQ_REPLAY); 7231 } 7232 7233 /* If the incoming sequence is not the next expected then it is bad */ 7234 if (rqst_seq != seqid + 1) { 7235 if (rqst_seq == seqid) { 7236 NFS4_DEBUG(rfs4_debug, 7237 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7238 "but last op was %d current op is %d\n", 7239 lastop->resop, resop->resop)); 7240 return (NFS4_CHKSEQ_BAD); 7241 } 7242 NFS4_DEBUG(rfs4_debug, 7243 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7244 rqst_seq, seqid)); 7245 return (NFS4_CHKSEQ_BAD); 7246 } 7247 7248 /* Everything okay -- next expected */ 7249 return (NFS4_CHKSEQ_OKAY); 7250 } 7251 7252 7253 static rfs4_chkseq_t 7254 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7255 { 7256 rfs4_chkseq_t rc; 7257 7258 rfs4_dbe_lock(op->ro_dbe); 7259 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7260 TRUE); 7261 rfs4_dbe_unlock(op->ro_dbe); 7262 7263 if (rc == NFS4_CHKSEQ_OKAY) 7264 rfs4_update_lease(op->ro_client); 7265 7266 return (rc); 7267 } 7268 7269 static rfs4_chkseq_t 7270 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7271 { 7272 rfs4_chkseq_t rc; 7273 7274 rfs4_dbe_lock(op->ro_dbe); 7275 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7276 olo_seqid, resop, FALSE); 7277 rfs4_dbe_unlock(op->ro_dbe); 7278 7279 return (rc); 7280 } 7281 7282 static rfs4_chkseq_t 7283 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7284 { 7285 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7286 7287 rfs4_dbe_lock(lsp->rls_dbe); 7288 if (!lsp->rls_skip_seqid_check) 7289 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7290 resop, TRUE); 7291 rfs4_dbe_unlock(lsp->rls_dbe); 7292 7293 return (rc); 7294 } 7295 7296 static void 7297 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7298 struct svc_req *req, struct compound_state *cs) 7299 { 7300 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7301 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7302 open_owner4 *owner = &args->owner; 7303 open_claim_type4 claim = args->claim; 7304 rfs4_client_t *cp; 7305 rfs4_openowner_t *oo; 7306 bool_t create; 7307 bool_t replay = FALSE; 7308 int can_reclaim; 7309 7310 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7311 OPEN4args *, args); 7312 7313 if (cs->vp == NULL) { 7314 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7315 goto end; 7316 } 7317 7318 /* 7319 * Need to check clientid and lease expiration first based on 7320 * error ordering and incrementing sequence id. 7321 */ 7322 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7323 if (cp == NULL) { 7324 *cs->statusp = resp->status = 7325 rfs4_check_clientid(&owner->clientid, 0); 7326 goto end; 7327 } 7328 7329 if (rfs4_lease_expired(cp)) { 7330 rfs4_client_close(cp); 7331 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7332 goto end; 7333 } 7334 can_reclaim = cp->rc_can_reclaim; 7335 7336 /* 7337 * Find the open_owner for use from this point forward. Take 7338 * care in updating the sequence id based on the type of error 7339 * being returned. 7340 */ 7341 retry: 7342 create = TRUE; 7343 oo = rfs4_findopenowner(owner, &create, args->seqid); 7344 if (oo == NULL) { 7345 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7346 rfs4_client_rele(cp); 7347 goto end; 7348 } 7349 7350 /* Hold off access to the sequence space while the open is done */ 7351 rfs4_sw_enter(&oo->ro_sw); 7352 7353 /* 7354 * If the open_owner existed before at the server, then check 7355 * the sequence id. 7356 */ 7357 if (!create && !oo->ro_postpone_confirm) { 7358 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7359 case NFS4_CHKSEQ_BAD: 7360 if ((args->seqid > oo->ro_open_seqid) && 7361 oo->ro_need_confirm) { 7362 rfs4_free_opens(oo, TRUE, FALSE); 7363 rfs4_sw_exit(&oo->ro_sw); 7364 rfs4_openowner_rele(oo); 7365 goto retry; 7366 } 7367 resp->status = NFS4ERR_BAD_SEQID; 7368 goto out; 7369 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7370 replay = TRUE; 7371 goto out; 7372 default: 7373 break; 7374 } 7375 7376 /* 7377 * Sequence was ok and open owner exists 7378 * check to see if we have yet to see an 7379 * open_confirm. 7380 */ 7381 if (oo->ro_need_confirm) { 7382 rfs4_free_opens(oo, TRUE, FALSE); 7383 rfs4_sw_exit(&oo->ro_sw); 7384 rfs4_openowner_rele(oo); 7385 goto retry; 7386 } 7387 } 7388 /* Grace only applies to regular-type OPENs */ 7389 if (rfs4_clnt_in_grace(cp) && 7390 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7391 *cs->statusp = resp->status = NFS4ERR_GRACE; 7392 goto out; 7393 } 7394 7395 /* 7396 * If previous state at the server existed then can_reclaim 7397 * will be set. If not reply NFS4ERR_NO_GRACE to the 7398 * client. 7399 */ 7400 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7401 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7402 goto out; 7403 } 7404 7405 7406 /* 7407 * Reject the open if the client has missed the grace period 7408 */ 7409 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7410 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7411 goto out; 7412 } 7413 7414 /* Couple of up-front bookkeeping items */ 7415 if (oo->ro_need_confirm) { 7416 /* 7417 * If this is a reclaim OPEN then we should not ask 7418 * for a confirmation of the open_owner per the 7419 * protocol specification. 7420 */ 7421 if (claim == CLAIM_PREVIOUS) 7422 oo->ro_need_confirm = FALSE; 7423 else 7424 resp->rflags |= OPEN4_RESULT_CONFIRM; 7425 } 7426 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7427 7428 /* 7429 * If there is an unshared filesystem mounted on this vnode, 7430 * do not allow to open/create in this directory. 7431 */ 7432 if (vn_ismntpt(cs->vp)) { 7433 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7434 goto out; 7435 } 7436 7437 /* 7438 * access must READ, WRITE, or BOTH. No access is invalid. 7439 * deny can be READ, WRITE, BOTH, or NONE. 7440 * bits not defined for access/deny are invalid. 7441 */ 7442 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7443 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7444 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7445 *cs->statusp = resp->status = NFS4ERR_INVAL; 7446 goto out; 7447 } 7448 7449 7450 /* 7451 * make sure attrset is zero before response is built. 7452 */ 7453 resp->attrset = 0; 7454 7455 switch (claim) { 7456 case CLAIM_NULL: 7457 rfs4_do_opennull(cs, req, args, oo, resp); 7458 break; 7459 case CLAIM_PREVIOUS: 7460 rfs4_do_openprev(cs, req, args, oo, resp); 7461 break; 7462 case CLAIM_DELEGATE_CUR: 7463 rfs4_do_opendelcur(cs, req, args, oo, resp); 7464 break; 7465 case CLAIM_DELEGATE_PREV: 7466 rfs4_do_opendelprev(cs, req, args, oo, resp); 7467 break; 7468 default: 7469 resp->status = NFS4ERR_INVAL; 7470 break; 7471 } 7472 7473 out: 7474 rfs4_client_rele(cp); 7475 7476 /* Catch sequence id handling here to make it a little easier */ 7477 switch (resp->status) { 7478 case NFS4ERR_BADXDR: 7479 case NFS4ERR_BAD_SEQID: 7480 case NFS4ERR_BAD_STATEID: 7481 case NFS4ERR_NOFILEHANDLE: 7482 case NFS4ERR_RESOURCE: 7483 case NFS4ERR_STALE_CLIENTID: 7484 case NFS4ERR_STALE_STATEID: 7485 /* 7486 * The protocol states that if any of these errors are 7487 * being returned, the sequence id should not be 7488 * incremented. Any other return requires an 7489 * increment. 7490 */ 7491 break; 7492 default: 7493 /* Always update the lease in this case */ 7494 rfs4_update_lease(oo->ro_client); 7495 7496 /* Regular response - copy the result */ 7497 if (!replay) 7498 rfs4_update_open_resp(oo, resop, &cs->fh); 7499 7500 /* 7501 * REPLAY case: Only if the previous response was OK 7502 * do we copy the filehandle. If not OK, no 7503 * filehandle to copy. 7504 */ 7505 if (replay == TRUE && 7506 resp->status == NFS4_OK && 7507 oo->ro_reply_fh.nfs_fh4_val) { 7508 /* 7509 * If this is a replay, we must restore the 7510 * current filehandle/vp to that of what was 7511 * returned originally. Try our best to do 7512 * it. 7513 */ 7514 nfs_fh4_fmt_t *fh_fmtp = 7515 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7516 7517 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7518 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7519 7520 if (cs->exi == NULL) { 7521 resp->status = NFS4ERR_STALE; 7522 goto finish; 7523 } 7524 7525 VN_RELE(cs->vp); 7526 7527 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7528 &resp->status); 7529 7530 if (cs->vp == NULL) 7531 goto finish; 7532 7533 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7534 } 7535 7536 /* 7537 * If this was a replay, no need to update the 7538 * sequence id. If the open_owner was not created on 7539 * this pass, then update. The first use of an 7540 * open_owner will not bump the sequence id. 7541 */ 7542 if (replay == FALSE && !create) 7543 rfs4_update_open_sequence(oo); 7544 /* 7545 * If the client is receiving an error and the 7546 * open_owner needs to be confirmed, there is no way 7547 * to notify the client of this fact ignoring the fact 7548 * that the server has no method of returning a 7549 * stateid to confirm. Therefore, the server needs to 7550 * mark this open_owner in a way as to avoid the 7551 * sequence id checking the next time the client uses 7552 * this open_owner. 7553 */ 7554 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7555 oo->ro_postpone_confirm = TRUE; 7556 /* 7557 * If OK response then clear the postpone flag and 7558 * reset the sequence id to keep in sync with the 7559 * client. 7560 */ 7561 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7562 oo->ro_postpone_confirm = FALSE; 7563 oo->ro_open_seqid = args->seqid; 7564 } 7565 break; 7566 } 7567 7568 finish: 7569 *cs->statusp = resp->status; 7570 7571 rfs4_sw_exit(&oo->ro_sw); 7572 rfs4_openowner_rele(oo); 7573 7574 end: 7575 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7576 OPEN4res *, resp); 7577 } 7578 7579 /*ARGSUSED*/ 7580 void 7581 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7582 struct svc_req *req, struct compound_state *cs) 7583 { 7584 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7585 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7586 rfs4_state_t *sp; 7587 nfsstat4 status; 7588 7589 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7590 OPEN_CONFIRM4args *, args); 7591 7592 if (cs->vp == NULL) { 7593 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7594 goto out; 7595 } 7596 7597 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7598 if (status != NFS4_OK) { 7599 *cs->statusp = resp->status = status; 7600 goto out; 7601 } 7602 7603 /* Ensure specified filehandle matches */ 7604 if (cs->vp != sp->rs_finfo->rf_vp) { 7605 rfs4_state_rele(sp); 7606 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7607 goto out; 7608 } 7609 7610 /* hold off other access to open_owner while we tinker */ 7611 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7612 7613 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7614 case NFS4_CHECK_STATEID_OKAY: 7615 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7616 resop) != 0) { 7617 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7618 break; 7619 } 7620 /* 7621 * If it is the appropriate stateid and determined to 7622 * be "OKAY" then this means that the stateid does not 7623 * need to be confirmed and the client is in error for 7624 * sending an OPEN_CONFIRM. 7625 */ 7626 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7627 break; 7628 case NFS4_CHECK_STATEID_OLD: 7629 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7630 break; 7631 case NFS4_CHECK_STATEID_BAD: 7632 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7633 break; 7634 case NFS4_CHECK_STATEID_EXPIRED: 7635 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7636 break; 7637 case NFS4_CHECK_STATEID_CLOSED: 7638 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7639 break; 7640 case NFS4_CHECK_STATEID_REPLAY: 7641 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7642 resop)) { 7643 case NFS4_CHKSEQ_OKAY: 7644 /* 7645 * This is replayed stateid; if seqid matches 7646 * next expected, then client is using wrong seqid. 7647 */ 7648 /* fall through */ 7649 case NFS4_CHKSEQ_BAD: 7650 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7651 break; 7652 case NFS4_CHKSEQ_REPLAY: 7653 /* 7654 * Note this case is the duplicate case so 7655 * resp->status is already set. 7656 */ 7657 *cs->statusp = resp->status; 7658 rfs4_update_lease(sp->rs_owner->ro_client); 7659 break; 7660 } 7661 break; 7662 case NFS4_CHECK_STATEID_UNCONFIRMED: 7663 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7664 resop) != NFS4_CHKSEQ_OKAY) { 7665 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7666 break; 7667 } 7668 *cs->statusp = resp->status = NFS4_OK; 7669 7670 next_stateid(&sp->rs_stateid); 7671 resp->open_stateid = sp->rs_stateid.stateid; 7672 sp->rs_owner->ro_need_confirm = FALSE; 7673 rfs4_update_lease(sp->rs_owner->ro_client); 7674 rfs4_update_open_sequence(sp->rs_owner); 7675 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7676 break; 7677 default: 7678 ASSERT(FALSE); 7679 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7680 break; 7681 } 7682 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7683 rfs4_state_rele(sp); 7684 7685 out: 7686 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7687 OPEN_CONFIRM4res *, resp); 7688 } 7689 7690 /*ARGSUSED*/ 7691 void 7692 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7693 struct svc_req *req, struct compound_state *cs) 7694 { 7695 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7696 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7697 uint32_t access = args->share_access; 7698 uint32_t deny = args->share_deny; 7699 nfsstat4 status; 7700 rfs4_state_t *sp; 7701 rfs4_file_t *fp; 7702 int fflags = 0; 7703 7704 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7705 OPEN_DOWNGRADE4args *, args); 7706 7707 if (cs->vp == NULL) { 7708 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7709 goto out; 7710 } 7711 7712 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7713 if (status != NFS4_OK) { 7714 *cs->statusp = resp->status = status; 7715 goto out; 7716 } 7717 7718 /* Ensure specified filehandle matches */ 7719 if (cs->vp != sp->rs_finfo->rf_vp) { 7720 rfs4_state_rele(sp); 7721 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7722 goto out; 7723 } 7724 7725 /* hold off other access to open_owner while we tinker */ 7726 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7727 7728 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7729 case NFS4_CHECK_STATEID_OKAY: 7730 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7731 resop) != NFS4_CHKSEQ_OKAY) { 7732 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7733 goto end; 7734 } 7735 break; 7736 case NFS4_CHECK_STATEID_OLD: 7737 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7738 goto end; 7739 case NFS4_CHECK_STATEID_BAD: 7740 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7741 goto end; 7742 case NFS4_CHECK_STATEID_EXPIRED: 7743 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7744 goto end; 7745 case NFS4_CHECK_STATEID_CLOSED: 7746 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7747 goto end; 7748 case NFS4_CHECK_STATEID_UNCONFIRMED: 7749 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7750 goto end; 7751 case NFS4_CHECK_STATEID_REPLAY: 7752 /* Check the sequence id for the open owner */ 7753 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7754 resop)) { 7755 case NFS4_CHKSEQ_OKAY: 7756 /* 7757 * This is replayed stateid; if seqid matches 7758 * next expected, then client is using wrong seqid. 7759 */ 7760 /* fall through */ 7761 case NFS4_CHKSEQ_BAD: 7762 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7763 goto end; 7764 case NFS4_CHKSEQ_REPLAY: 7765 /* 7766 * Note this case is the duplicate case so 7767 * resp->status is already set. 7768 */ 7769 *cs->statusp = resp->status; 7770 rfs4_update_lease(sp->rs_owner->ro_client); 7771 goto end; 7772 } 7773 break; 7774 default: 7775 ASSERT(FALSE); 7776 break; 7777 } 7778 7779 rfs4_dbe_lock(sp->rs_dbe); 7780 /* 7781 * Check that the new access modes and deny modes are valid. 7782 * Check that no invalid bits are set. 7783 */ 7784 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7785 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7786 *cs->statusp = resp->status = NFS4ERR_INVAL; 7787 rfs4_update_open_sequence(sp->rs_owner); 7788 rfs4_dbe_unlock(sp->rs_dbe); 7789 goto end; 7790 } 7791 7792 /* 7793 * The new modes must be a subset of the current modes and 7794 * the access must specify at least one mode. To test that 7795 * the new mode is a subset of the current modes we bitwise 7796 * AND them together and check that the result equals the new 7797 * mode. For example: 7798 * New mode, access == R and current mode, sp->rs_open_access == RW 7799 * access & sp->rs_open_access == R == access, so the new access mode 7800 * is valid. Consider access == RW, sp->rs_open_access = R 7801 * access & sp->rs_open_access == R != access, so the new access mode 7802 * is invalid. 7803 */ 7804 if ((access & sp->rs_open_access) != access || 7805 (deny & sp->rs_open_deny) != deny || 7806 (access & 7807 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7808 *cs->statusp = resp->status = NFS4ERR_INVAL; 7809 rfs4_update_open_sequence(sp->rs_owner); 7810 rfs4_dbe_unlock(sp->rs_dbe); 7811 goto end; 7812 } 7813 7814 /* 7815 * Release any share locks associated with this stateID. 7816 * Strictly speaking, this violates the spec because the 7817 * spec effectively requires that open downgrade be atomic. 7818 * At present, fs_shrlock does not have this capability. 7819 */ 7820 (void) rfs4_unshare(sp); 7821 7822 status = rfs4_share(sp, access, deny); 7823 if (status != NFS4_OK) { 7824 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7825 rfs4_update_open_sequence(sp->rs_owner); 7826 rfs4_dbe_unlock(sp->rs_dbe); 7827 goto end; 7828 } 7829 7830 fp = sp->rs_finfo; 7831 rfs4_dbe_lock(fp->rf_dbe); 7832 7833 /* 7834 * If the current mode has deny read and the new mode 7835 * does not, decrement the number of deny read mode bits 7836 * and if it goes to zero turn off the deny read bit 7837 * on the file. 7838 */ 7839 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7840 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7841 fp->rf_deny_read--; 7842 if (fp->rf_deny_read == 0) 7843 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7844 } 7845 7846 /* 7847 * If the current mode has deny write and the new mode 7848 * does not, decrement the number of deny write mode bits 7849 * and if it goes to zero turn off the deny write bit 7850 * on the file. 7851 */ 7852 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7853 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7854 fp->rf_deny_write--; 7855 if (fp->rf_deny_write == 0) 7856 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7857 } 7858 7859 /* 7860 * If the current mode has access read and the new mode 7861 * does not, decrement the number of access read mode bits 7862 * and if it goes to zero turn off the access read bit 7863 * on the file. set fflags to FREAD for the call to 7864 * vn_open_downgrade(). 7865 */ 7866 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7867 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7868 fp->rf_access_read--; 7869 if (fp->rf_access_read == 0) 7870 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7871 fflags |= FREAD; 7872 } 7873 7874 /* 7875 * If the current mode has access write and the new mode 7876 * does not, decrement the number of access write mode bits 7877 * and if it goes to zero turn off the access write bit 7878 * on the file. set fflags to FWRITE for the call to 7879 * vn_open_downgrade(). 7880 */ 7881 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7882 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7883 fp->rf_access_write--; 7884 if (fp->rf_access_write == 0) 7885 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7886 fflags |= FWRITE; 7887 } 7888 7889 /* Check that the file is still accessible */ 7890 ASSERT(fp->rf_share_access); 7891 7892 rfs4_dbe_unlock(fp->rf_dbe); 7893 7894 /* now set the new open access and deny modes */ 7895 sp->rs_open_access = access; 7896 sp->rs_open_deny = deny; 7897 7898 /* 7899 * we successfully downgraded the share lock, now we need to downgrade 7900 * the open. it is possible that the downgrade was only for a deny 7901 * mode and we have nothing else to do. 7902 */ 7903 if ((fflags & (FREAD|FWRITE)) != 0) 7904 vn_open_downgrade(cs->vp, fflags); 7905 7906 /* Update the stateid */ 7907 next_stateid(&sp->rs_stateid); 7908 resp->open_stateid = sp->rs_stateid.stateid; 7909 7910 rfs4_dbe_unlock(sp->rs_dbe); 7911 7912 *cs->statusp = resp->status = NFS4_OK; 7913 /* Update the lease */ 7914 rfs4_update_lease(sp->rs_owner->ro_client); 7915 /* And the sequence */ 7916 rfs4_update_open_sequence(sp->rs_owner); 7917 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7918 7919 end: 7920 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7921 rfs4_state_rele(sp); 7922 out: 7923 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7924 OPEN_DOWNGRADE4res *, resp); 7925 } 7926 7927 /* 7928 * The logic behind this function is detailed in the NFSv4 RFC in the 7929 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7930 * that section for explicit guidance to server behavior for 7931 * SETCLIENTID. 7932 */ 7933 void 7934 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7935 struct svc_req *req, struct compound_state *cs) 7936 { 7937 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7938 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7939 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7940 rfs4_clntip_t *ci; 7941 bool_t create; 7942 char *addr, *netid; 7943 int len; 7944 7945 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7946 SETCLIENTID4args *, args); 7947 retry: 7948 newcp = cp_confirmed = cp_unconfirmed = NULL; 7949 7950 /* 7951 * Save the caller's IP address 7952 */ 7953 args->client.cl_addr = 7954 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7955 7956 /* 7957 * Record if it is a Solaris client that cannot handle referrals. 7958 */ 7959 if (strstr(args->client.id_val, "Solaris") && 7960 !strstr(args->client.id_val, "+referrals")) { 7961 /* Add a "yes, it's downrev" record */ 7962 create = TRUE; 7963 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7964 ASSERT(ci != NULL); 7965 rfs4_dbe_rele(ci->ri_dbe); 7966 } else { 7967 /* Remove any previous record */ 7968 rfs4_invalidate_clntip(args->client.cl_addr); 7969 } 7970 7971 /* 7972 * In search of an EXISTING client matching the incoming 7973 * request to establish a new client identifier at the server 7974 */ 7975 create = TRUE; 7976 cp = rfs4_findclient(&args->client, &create, NULL); 7977 7978 /* Should never happen */ 7979 ASSERT(cp != NULL); 7980 7981 if (cp == NULL) { 7982 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7983 goto out; 7984 } 7985 7986 /* 7987 * Easiest case. Client identifier is newly created and is 7988 * unconfirmed. Also note that for this case, no other 7989 * entries exist for the client identifier. Nothing else to 7990 * check. Just setup the response and respond. 7991 */ 7992 if (create) { 7993 *cs->statusp = res->status = NFS4_OK; 7994 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 7995 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7996 cp->rc_confirm_verf; 7997 /* Setup callback information; CB_NULL confirmation later */ 7998 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7999 8000 rfs4_client_rele(cp); 8001 goto out; 8002 } 8003 8004 /* 8005 * An existing, confirmed client may exist but it may not have 8006 * been active for at least one lease period. If so, then 8007 * "close" the client and create a new client identifier 8008 */ 8009 if (rfs4_lease_expired(cp)) { 8010 rfs4_client_close(cp); 8011 goto retry; 8012 } 8013 8014 if (cp->rc_need_confirm == TRUE) 8015 cp_unconfirmed = cp; 8016 else 8017 cp_confirmed = cp; 8018 8019 cp = NULL; 8020 8021 /* 8022 * We have a confirmed client, now check for an 8023 * unconfimred entry 8024 */ 8025 if (cp_confirmed) { 8026 /* If creds don't match then client identifier is inuse */ 8027 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8028 rfs4_cbinfo_t *cbp; 8029 /* 8030 * Some one else has established this client 8031 * id. Try and say * who they are. We will use 8032 * the call back address supplied by * the 8033 * first client. 8034 */ 8035 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8036 8037 addr = netid = NULL; 8038 8039 cbp = &cp_confirmed->rc_cbinfo; 8040 if (cbp->cb_callback.cb_location.r_addr && 8041 cbp->cb_callback.cb_location.r_netid) { 8042 cb_client4 *cbcp = &cbp->cb_callback; 8043 8044 len = strlen(cbcp->cb_location.r_addr)+1; 8045 addr = kmem_alloc(len, KM_SLEEP); 8046 bcopy(cbcp->cb_location.r_addr, addr, len); 8047 len = strlen(cbcp->cb_location.r_netid)+1; 8048 netid = kmem_alloc(len, KM_SLEEP); 8049 bcopy(cbcp->cb_location.r_netid, netid, len); 8050 } 8051 8052 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8053 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8054 8055 rfs4_client_rele(cp_confirmed); 8056 } 8057 8058 /* 8059 * Confirmed, creds match, and verifier matches; must 8060 * be an update of the callback info 8061 */ 8062 if (cp_confirmed->rc_nfs_client.verifier == 8063 args->client.verifier) { 8064 /* Setup callback information */ 8065 rfs4_client_setcb(cp_confirmed, &args->callback, 8066 args->callback_ident); 8067 8068 /* everything okay -- move ahead */ 8069 *cs->statusp = res->status = NFS4_OK; 8070 res->SETCLIENTID4res_u.resok4.clientid = 8071 cp_confirmed->rc_clientid; 8072 8073 /* update the confirm_verifier and return it */ 8074 rfs4_client_scv_next(cp_confirmed); 8075 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8076 cp_confirmed->rc_confirm_verf; 8077 8078 rfs4_client_rele(cp_confirmed); 8079 goto out; 8080 } 8081 8082 /* 8083 * Creds match but the verifier doesn't. Must search 8084 * for an unconfirmed client that would be replaced by 8085 * this request. 8086 */ 8087 create = FALSE; 8088 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8089 cp_confirmed); 8090 } 8091 8092 /* 8093 * At this point, we have taken care of the brand new client 8094 * struct, INUSE case, update of an existing, and confirmed 8095 * client struct. 8096 */ 8097 8098 /* 8099 * check to see if things have changed while we originally 8100 * picked up the client struct. If they have, then return and 8101 * retry the processing of this SETCLIENTID request. 8102 */ 8103 if (cp_unconfirmed) { 8104 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8105 if (!cp_unconfirmed->rc_need_confirm) { 8106 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8107 rfs4_client_rele(cp_unconfirmed); 8108 if (cp_confirmed) 8109 rfs4_client_rele(cp_confirmed); 8110 goto retry; 8111 } 8112 /* do away with the old unconfirmed one */ 8113 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8114 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8115 rfs4_client_rele(cp_unconfirmed); 8116 cp_unconfirmed = NULL; 8117 } 8118 8119 /* 8120 * This search will temporarily hide the confirmed client 8121 * struct while a new client struct is created as the 8122 * unconfirmed one. 8123 */ 8124 create = TRUE; 8125 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8126 8127 ASSERT(newcp != NULL); 8128 8129 if (newcp == NULL) { 8130 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8131 rfs4_client_rele(cp_confirmed); 8132 goto out; 8133 } 8134 8135 /* 8136 * If one was not created, then a similar request must be in 8137 * process so release and start over with this one 8138 */ 8139 if (create != TRUE) { 8140 rfs4_client_rele(newcp); 8141 if (cp_confirmed) 8142 rfs4_client_rele(cp_confirmed); 8143 goto retry; 8144 } 8145 8146 *cs->statusp = res->status = NFS4_OK; 8147 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8148 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8149 newcp->rc_confirm_verf; 8150 /* Setup callback information; CB_NULL confirmation later */ 8151 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8152 8153 newcp->rc_cp_confirmed = cp_confirmed; 8154 8155 rfs4_client_rele(newcp); 8156 8157 out: 8158 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8159 SETCLIENTID4res *, res); 8160 } 8161 8162 /*ARGSUSED*/ 8163 void 8164 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8165 struct svc_req *req, struct compound_state *cs) 8166 { 8167 SETCLIENTID_CONFIRM4args *args = 8168 &argop->nfs_argop4_u.opsetclientid_confirm; 8169 SETCLIENTID_CONFIRM4res *res = 8170 &resop->nfs_resop4_u.opsetclientid_confirm; 8171 rfs4_client_t *cp, *cptoclose = NULL; 8172 8173 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8174 struct compound_state *, cs, 8175 SETCLIENTID_CONFIRM4args *, args); 8176 8177 *cs->statusp = res->status = NFS4_OK; 8178 8179 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8180 8181 if (cp == NULL) { 8182 *cs->statusp = res->status = 8183 rfs4_check_clientid(&args->clientid, 1); 8184 goto out; 8185 } 8186 8187 if (!creds_ok(cp, req, cs)) { 8188 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8189 rfs4_client_rele(cp); 8190 goto out; 8191 } 8192 8193 /* If the verifier doesn't match, the record doesn't match */ 8194 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8195 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8196 rfs4_client_rele(cp); 8197 goto out; 8198 } 8199 8200 rfs4_dbe_lock(cp->rc_dbe); 8201 cp->rc_need_confirm = FALSE; 8202 if (cp->rc_cp_confirmed) { 8203 cptoclose = cp->rc_cp_confirmed; 8204 cptoclose->rc_ss_remove = 1; 8205 cp->rc_cp_confirmed = NULL; 8206 } 8207 8208 /* 8209 * Update the client's associated server instance, if it's changed 8210 * since the client was created. 8211 */ 8212 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8213 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8214 8215 /* 8216 * Record clientid in stable storage. 8217 * Must be done after server instance has been assigned. 8218 */ 8219 rfs4_ss_clid(cp); 8220 8221 rfs4_dbe_unlock(cp->rc_dbe); 8222 8223 if (cptoclose) 8224 /* don't need to rele, client_close does it */ 8225 rfs4_client_close(cptoclose); 8226 8227 /* If needed, initiate CB_NULL call for callback path */ 8228 rfs4_deleg_cb_check(cp); 8229 rfs4_update_lease(cp); 8230 8231 /* 8232 * Check to see if client can perform reclaims 8233 */ 8234 rfs4_ss_chkclid(cp); 8235 8236 rfs4_client_rele(cp); 8237 8238 out: 8239 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8240 struct compound_state *, cs, 8241 SETCLIENTID_CONFIRM4 *, res); 8242 } 8243 8244 8245 /*ARGSUSED*/ 8246 void 8247 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8248 struct svc_req *req, struct compound_state *cs) 8249 { 8250 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8251 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8252 rfs4_state_t *sp; 8253 nfsstat4 status; 8254 8255 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8256 CLOSE4args *, args); 8257 8258 if (cs->vp == NULL) { 8259 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8260 goto out; 8261 } 8262 8263 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8264 if (status != NFS4_OK) { 8265 *cs->statusp = resp->status = status; 8266 goto out; 8267 } 8268 8269 /* Ensure specified filehandle matches */ 8270 if (cs->vp != sp->rs_finfo->rf_vp) { 8271 rfs4_state_rele(sp); 8272 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8273 goto out; 8274 } 8275 8276 /* hold off other access to open_owner while we tinker */ 8277 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8278 8279 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8280 case NFS4_CHECK_STATEID_OKAY: 8281 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8282 resop) != NFS4_CHKSEQ_OKAY) { 8283 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8284 goto end; 8285 } 8286 break; 8287 case NFS4_CHECK_STATEID_OLD: 8288 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8289 goto end; 8290 case NFS4_CHECK_STATEID_BAD: 8291 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8292 goto end; 8293 case NFS4_CHECK_STATEID_EXPIRED: 8294 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8295 goto end; 8296 case NFS4_CHECK_STATEID_CLOSED: 8297 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8298 goto end; 8299 case NFS4_CHECK_STATEID_UNCONFIRMED: 8300 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8301 goto end; 8302 case NFS4_CHECK_STATEID_REPLAY: 8303 /* Check the sequence id for the open owner */ 8304 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8305 resop)) { 8306 case NFS4_CHKSEQ_OKAY: 8307 /* 8308 * This is replayed stateid; if seqid matches 8309 * next expected, then client is using wrong seqid. 8310 */ 8311 /* FALL THROUGH */ 8312 case NFS4_CHKSEQ_BAD: 8313 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8314 goto end; 8315 case NFS4_CHKSEQ_REPLAY: 8316 /* 8317 * Note this case is the duplicate case so 8318 * resp->status is already set. 8319 */ 8320 *cs->statusp = resp->status; 8321 rfs4_update_lease(sp->rs_owner->ro_client); 8322 goto end; 8323 } 8324 break; 8325 default: 8326 ASSERT(FALSE); 8327 break; 8328 } 8329 8330 rfs4_dbe_lock(sp->rs_dbe); 8331 8332 /* Update the stateid. */ 8333 next_stateid(&sp->rs_stateid); 8334 resp->open_stateid = sp->rs_stateid.stateid; 8335 8336 rfs4_dbe_unlock(sp->rs_dbe); 8337 8338 rfs4_update_lease(sp->rs_owner->ro_client); 8339 rfs4_update_open_sequence(sp->rs_owner); 8340 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8341 8342 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8343 8344 *cs->statusp = resp->status = status; 8345 8346 end: 8347 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8348 rfs4_state_rele(sp); 8349 out: 8350 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8351 CLOSE4res *, resp); 8352 } 8353 8354 /* 8355 * Manage the counts on the file struct and close all file locks 8356 */ 8357 /*ARGSUSED*/ 8358 void 8359 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8360 bool_t close_of_client) 8361 { 8362 rfs4_file_t *fp = sp->rs_finfo; 8363 rfs4_lo_state_t *lsp; 8364 int fflags = 0; 8365 8366 /* 8367 * If this call is part of the larger closing down of client 8368 * state then it is just easier to release all locks 8369 * associated with this client instead of going through each 8370 * individual file and cleaning locks there. 8371 */ 8372 if (close_of_client) { 8373 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8374 !list_is_empty(&sp->rs_lostatelist) && 8375 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8376 /* Is the PxFS kernel module loaded? */ 8377 if (lm_remove_file_locks != NULL) { 8378 int new_sysid; 8379 8380 /* Encode the cluster nodeid in new sysid */ 8381 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8382 lm_set_nlmid_flk(&new_sysid); 8383 8384 /* 8385 * This PxFS routine removes file locks for a 8386 * client over all nodes of a cluster. 8387 */ 8388 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8389 "lm_remove_file_locks(sysid=0x%x)\n", 8390 new_sysid)); 8391 (*lm_remove_file_locks)(new_sysid); 8392 } else { 8393 struct flock64 flk; 8394 8395 /* Release all locks for this client */ 8396 flk.l_type = F_UNLKSYS; 8397 flk.l_whence = 0; 8398 flk.l_start = 0; 8399 flk.l_len = 0; 8400 flk.l_sysid = 8401 sp->rs_owner->ro_client->rc_sysidt; 8402 flk.l_pid = 0; 8403 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8404 &flk, F_REMOTELOCK | FREAD | FWRITE, 8405 (u_offset_t)0, NULL, CRED(), NULL); 8406 } 8407 8408 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8409 } 8410 } 8411 8412 /* 8413 * Release all locks on this file by this lock owner or at 8414 * least mark the locks as having been released 8415 */ 8416 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8417 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8418 lsp->rls_locks_cleaned = TRUE; 8419 8420 /* Was this already taken care of above? */ 8421 if (!close_of_client && 8422 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8423 (void) cleanlocks(sp->rs_finfo->rf_vp, 8424 lsp->rls_locker->rl_pid, 8425 lsp->rls_locker->rl_client->rc_sysidt); 8426 } 8427 8428 /* 8429 * Release any shrlocks associated with this open state ID. 8430 * This must be done before the rfs4_state gets marked closed. 8431 */ 8432 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8433 (void) rfs4_unshare(sp); 8434 8435 if (sp->rs_open_access) { 8436 rfs4_dbe_lock(fp->rf_dbe); 8437 8438 /* 8439 * Decrement the count for each access and deny bit that this 8440 * state has contributed to the file. 8441 * If the file counts go to zero 8442 * clear the appropriate bit in the appropriate mask. 8443 */ 8444 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8445 fp->rf_access_read--; 8446 fflags |= FREAD; 8447 if (fp->rf_access_read == 0) 8448 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8449 } 8450 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8451 fp->rf_access_write--; 8452 fflags |= FWRITE; 8453 if (fp->rf_access_write == 0) 8454 fp->rf_share_access &= 8455 ~OPEN4_SHARE_ACCESS_WRITE; 8456 } 8457 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8458 fp->rf_deny_read--; 8459 if (fp->rf_deny_read == 0) 8460 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8461 } 8462 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8463 fp->rf_deny_write--; 8464 if (fp->rf_deny_write == 0) 8465 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8466 } 8467 8468 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8469 8470 rfs4_dbe_unlock(fp->rf_dbe); 8471 8472 sp->rs_open_access = 0; 8473 sp->rs_open_deny = 0; 8474 } 8475 } 8476 8477 /* 8478 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8479 */ 8480 static nfsstat4 8481 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8482 { 8483 rfs4_lockowner_t *lo; 8484 rfs4_client_t *cp; 8485 uint32_t len; 8486 8487 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8488 if (lo != NULL) { 8489 cp = lo->rl_client; 8490 if (rfs4_lease_expired(cp)) { 8491 rfs4_lockowner_rele(lo); 8492 rfs4_dbe_hold(cp->rc_dbe); 8493 rfs4_client_close(cp); 8494 return (NFS4ERR_EXPIRED); 8495 } 8496 dp->owner.clientid = lo->rl_owner.clientid; 8497 len = lo->rl_owner.owner_len; 8498 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8499 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8500 dp->owner.owner_len = len; 8501 rfs4_lockowner_rele(lo); 8502 goto finish; 8503 } 8504 8505 /* 8506 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8507 * of the client id contain the boot time for a NFS4 lock. So we 8508 * fabricate and identity by setting clientid to the sysid, and 8509 * the lock owner to the pid. 8510 */ 8511 dp->owner.clientid = flk->l_sysid; 8512 len = sizeof (pid_t); 8513 dp->owner.owner_len = len; 8514 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8515 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8516 finish: 8517 dp->offset = flk->l_start; 8518 dp->length = flk->l_len; 8519 8520 if (flk->l_type == F_RDLCK) 8521 dp->locktype = READ_LT; 8522 else if (flk->l_type == F_WRLCK) 8523 dp->locktype = WRITE_LT; 8524 else 8525 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8526 8527 return (NFS4_OK); 8528 } 8529 8530 static int 8531 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8532 { 8533 int error; 8534 struct flock64 flk; 8535 int i; 8536 clock_t delaytime; 8537 int cmd; 8538 8539 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8540 retry: 8541 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8542 8543 for (i = 0; i < rfs4_maxlock_tries; i++) { 8544 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8545 error = VOP_FRLOCK(vp, cmd, 8546 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8547 8548 if (error != EAGAIN && error != EACCES) 8549 break; 8550 8551 if (i < rfs4_maxlock_tries - 1) { 8552 delay(delaytime); 8553 delaytime *= 2; 8554 } 8555 } 8556 8557 if (error == EAGAIN || error == EACCES) { 8558 /* Get the owner of the lock */ 8559 flk = *flock; 8560 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8561 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8562 (u_offset_t)0, NULL, cred, NULL) == 0) { 8563 if (flk.l_type == F_UNLCK) { 8564 /* No longer locked, retry */ 8565 goto retry; 8566 } 8567 *flock = flk; 8568 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8569 F_GETLK, &flk); 8570 } 8571 } 8572 8573 return (error); 8574 } 8575 8576 /*ARGSUSED*/ 8577 static nfsstat4 8578 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8579 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8580 { 8581 nfsstat4 status; 8582 rfs4_lockowner_t *lo = lsp->rls_locker; 8583 rfs4_state_t *sp = lsp->rls_state; 8584 struct flock64 flock; 8585 int16_t ltype; 8586 int flag; 8587 int error; 8588 sysid_t sysid; 8589 LOCK4res *lres; 8590 8591 if (rfs4_lease_expired(lo->rl_client)) { 8592 return (NFS4ERR_EXPIRED); 8593 } 8594 8595 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8596 return (status); 8597 8598 /* Check for zero length. To lock to end of file use all ones for V4 */ 8599 if (length == 0) 8600 return (NFS4ERR_INVAL); 8601 else if (length == (length4)(~0)) 8602 length = 0; /* Posix to end of file */ 8603 8604 retry: 8605 rfs4_dbe_lock(sp->rs_dbe); 8606 if (sp->rs_closed) { 8607 rfs4_dbe_unlock(sp->rs_dbe); 8608 return (NFS4ERR_OLD_STATEID); 8609 } 8610 8611 if (resop->resop != OP_LOCKU) { 8612 switch (locktype) { 8613 case READ_LT: 8614 case READW_LT: 8615 if ((sp->rs_share_access 8616 & OPEN4_SHARE_ACCESS_READ) == 0) { 8617 rfs4_dbe_unlock(sp->rs_dbe); 8618 8619 return (NFS4ERR_OPENMODE); 8620 } 8621 ltype = F_RDLCK; 8622 break; 8623 case WRITE_LT: 8624 case WRITEW_LT: 8625 if ((sp->rs_share_access 8626 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8627 rfs4_dbe_unlock(sp->rs_dbe); 8628 8629 return (NFS4ERR_OPENMODE); 8630 } 8631 ltype = F_WRLCK; 8632 break; 8633 } 8634 } else 8635 ltype = F_UNLCK; 8636 8637 flock.l_type = ltype; 8638 flock.l_whence = 0; /* SEEK_SET */ 8639 flock.l_start = offset; 8640 flock.l_len = length; 8641 flock.l_sysid = sysid; 8642 flock.l_pid = lsp->rls_locker->rl_pid; 8643 8644 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8645 if (flock.l_len < 0 || flock.l_start < 0) { 8646 rfs4_dbe_unlock(sp->rs_dbe); 8647 return (NFS4ERR_INVAL); 8648 } 8649 8650 /* 8651 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8652 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8653 */ 8654 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8655 8656 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8657 if (error == 0) { 8658 rfs4_dbe_lock(lsp->rls_dbe); 8659 next_stateid(&lsp->rls_lockid); 8660 rfs4_dbe_unlock(lsp->rls_dbe); 8661 } 8662 8663 rfs4_dbe_unlock(sp->rs_dbe); 8664 8665 /* 8666 * N.B. We map error values to nfsv4 errors. This is differrent 8667 * than puterrno4 routine. 8668 */ 8669 switch (error) { 8670 case 0: 8671 status = NFS4_OK; 8672 break; 8673 case EAGAIN: 8674 case EACCES: /* Old value */ 8675 /* Can only get here if op is OP_LOCK */ 8676 ASSERT(resop->resop == OP_LOCK); 8677 lres = &resop->nfs_resop4_u.oplock; 8678 status = NFS4ERR_DENIED; 8679 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8680 == NFS4ERR_EXPIRED) 8681 goto retry; 8682 break; 8683 case ENOLCK: 8684 status = NFS4ERR_DELAY; 8685 break; 8686 case EOVERFLOW: 8687 status = NFS4ERR_INVAL; 8688 break; 8689 case EINVAL: 8690 status = NFS4ERR_NOTSUPP; 8691 break; 8692 default: 8693 status = NFS4ERR_SERVERFAULT; 8694 break; 8695 } 8696 8697 return (status); 8698 } 8699 8700 /*ARGSUSED*/ 8701 void 8702 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8703 struct svc_req *req, struct compound_state *cs) 8704 { 8705 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8706 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8707 nfsstat4 status; 8708 stateid4 *stateid; 8709 rfs4_lockowner_t *lo; 8710 rfs4_client_t *cp; 8711 rfs4_state_t *sp = NULL; 8712 rfs4_lo_state_t *lsp = NULL; 8713 bool_t ls_sw_held = FALSE; 8714 bool_t create = TRUE; 8715 bool_t lcreate = TRUE; 8716 bool_t dup_lock = FALSE; 8717 int rc; 8718 8719 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8720 LOCK4args *, args); 8721 8722 if (cs->vp == NULL) { 8723 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8724 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8725 cs, LOCK4res *, resp); 8726 return; 8727 } 8728 8729 if (args->locker.new_lock_owner) { 8730 /* Create a new lockowner for this instance */ 8731 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8732 8733 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8734 8735 stateid = &olo->open_stateid; 8736 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8737 if (status != NFS4_OK) { 8738 NFS4_DEBUG(rfs4_debug, 8739 (CE_NOTE, "Get state failed in lock %d", status)); 8740 *cs->statusp = resp->status = status; 8741 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8742 cs, LOCK4res *, resp); 8743 return; 8744 } 8745 8746 /* Ensure specified filehandle matches */ 8747 if (cs->vp != sp->rs_finfo->rf_vp) { 8748 rfs4_state_rele(sp); 8749 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8750 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8751 cs, LOCK4res *, resp); 8752 return; 8753 } 8754 8755 /* hold off other access to open_owner while we tinker */ 8756 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8757 8758 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8759 case NFS4_CHECK_STATEID_OLD: 8760 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8761 goto end; 8762 case NFS4_CHECK_STATEID_BAD: 8763 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8764 goto end; 8765 case NFS4_CHECK_STATEID_EXPIRED: 8766 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8767 goto end; 8768 case NFS4_CHECK_STATEID_UNCONFIRMED: 8769 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8770 goto end; 8771 case NFS4_CHECK_STATEID_CLOSED: 8772 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8773 goto end; 8774 case NFS4_CHECK_STATEID_OKAY: 8775 case NFS4_CHECK_STATEID_REPLAY: 8776 switch (rfs4_check_olo_seqid(olo->open_seqid, 8777 sp->rs_owner, resop)) { 8778 case NFS4_CHKSEQ_OKAY: 8779 if (rc == NFS4_CHECK_STATEID_OKAY) 8780 break; 8781 /* 8782 * This is replayed stateid; if seqid 8783 * matches next expected, then client 8784 * is using wrong seqid. 8785 */ 8786 /* FALLTHROUGH */ 8787 case NFS4_CHKSEQ_BAD: 8788 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8789 goto end; 8790 case NFS4_CHKSEQ_REPLAY: 8791 /* This is a duplicate LOCK request */ 8792 dup_lock = TRUE; 8793 8794 /* 8795 * For a duplicate we do not want to 8796 * create a new lockowner as it should 8797 * already exist. 8798 * Turn off the lockowner create flag. 8799 */ 8800 lcreate = FALSE; 8801 } 8802 break; 8803 } 8804 8805 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8806 if (lo == NULL) { 8807 NFS4_DEBUG(rfs4_debug, 8808 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8809 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8810 goto end; 8811 } 8812 8813 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8814 if (lsp == NULL) { 8815 rfs4_update_lease(sp->rs_owner->ro_client); 8816 /* 8817 * Only update theh open_seqid if this is not 8818 * a duplicate request 8819 */ 8820 if (dup_lock == FALSE) { 8821 rfs4_update_open_sequence(sp->rs_owner); 8822 } 8823 8824 NFS4_DEBUG(rfs4_debug, 8825 (CE_NOTE, "rfs4_op_lock: no state")); 8826 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8827 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8828 rfs4_lockowner_rele(lo); 8829 goto end; 8830 } 8831 8832 /* 8833 * This is the new_lock_owner branch and the client is 8834 * supposed to be associating a new lock_owner with 8835 * the open file at this point. If we find that a 8836 * lock_owner/state association already exists and a 8837 * successful LOCK request was returned to the client, 8838 * an error is returned to the client since this is 8839 * not appropriate. The client should be using the 8840 * existing lock_owner branch. 8841 */ 8842 if (dup_lock == FALSE && create == FALSE) { 8843 if (lsp->rls_lock_completed == TRUE) { 8844 *cs->statusp = 8845 resp->status = NFS4ERR_BAD_SEQID; 8846 rfs4_lockowner_rele(lo); 8847 goto end; 8848 } 8849 } 8850 8851 rfs4_update_lease(sp->rs_owner->ro_client); 8852 8853 /* 8854 * Only update theh open_seqid if this is not 8855 * a duplicate request 8856 */ 8857 if (dup_lock == FALSE) { 8858 rfs4_update_open_sequence(sp->rs_owner); 8859 } 8860 8861 /* 8862 * If this is a duplicate lock request, just copy the 8863 * previously saved reply and return. 8864 */ 8865 if (dup_lock == TRUE) { 8866 /* verify that lock_seqid's match */ 8867 if (lsp->rls_seqid != olo->lock_seqid) { 8868 NFS4_DEBUG(rfs4_debug, 8869 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8870 "lsp->seqid=%d old->seqid=%d", 8871 lsp->rls_seqid, olo->lock_seqid)); 8872 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8873 } else { 8874 rfs4_copy_reply(resop, &lsp->rls_reply); 8875 /* 8876 * Make sure to copy the just 8877 * retrieved reply status into the 8878 * overall compound status 8879 */ 8880 *cs->statusp = resp->status; 8881 } 8882 rfs4_lockowner_rele(lo); 8883 goto end; 8884 } 8885 8886 rfs4_dbe_lock(lsp->rls_dbe); 8887 8888 /* Make sure to update the lock sequence id */ 8889 lsp->rls_seqid = olo->lock_seqid; 8890 8891 NFS4_DEBUG(rfs4_debug, 8892 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8893 8894 /* 8895 * This is used to signify the newly created lockowner 8896 * stateid and its sequence number. The checks for 8897 * sequence number and increment don't occur on the 8898 * very first lock request for a lockowner. 8899 */ 8900 lsp->rls_skip_seqid_check = TRUE; 8901 8902 /* hold off other access to lsp while we tinker */ 8903 rfs4_sw_enter(&lsp->rls_sw); 8904 ls_sw_held = TRUE; 8905 8906 rfs4_dbe_unlock(lsp->rls_dbe); 8907 8908 rfs4_lockowner_rele(lo); 8909 } else { 8910 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8911 /* get lsp and hold the lock on the underlying file struct */ 8912 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8913 != NFS4_OK) { 8914 *cs->statusp = resp->status = status; 8915 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8916 cs, LOCK4res *, resp); 8917 return; 8918 } 8919 create = FALSE; /* We didn't create lsp */ 8920 8921 /* Ensure specified filehandle matches */ 8922 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 8923 rfs4_lo_state_rele(lsp, TRUE); 8924 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8925 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8926 cs, LOCK4res *, resp); 8927 return; 8928 } 8929 8930 /* hold off other access to lsp while we tinker */ 8931 rfs4_sw_enter(&lsp->rls_sw); 8932 ls_sw_held = TRUE; 8933 8934 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8935 /* 8936 * The stateid looks like it was okay (expected to be 8937 * the next one) 8938 */ 8939 case NFS4_CHECK_STATEID_OKAY: 8940 /* 8941 * The sequence id is now checked. Determine 8942 * if this is a replay or if it is in the 8943 * expected (next) sequence. In the case of a 8944 * replay, there are two replay conditions 8945 * that may occur. The first is the normal 8946 * condition where a LOCK is done with a 8947 * NFS4_OK response and the stateid is 8948 * updated. That case is handled below when 8949 * the stateid is identified as a REPLAY. The 8950 * second is the case where an error is 8951 * returned, like NFS4ERR_DENIED, and the 8952 * sequence number is updated but the stateid 8953 * is not updated. This second case is dealt 8954 * with here. So it may seem odd that the 8955 * stateid is okay but the sequence id is a 8956 * replay but it is okay. 8957 */ 8958 switch (rfs4_check_lock_seqid( 8959 args->locker.locker4_u.lock_owner.lock_seqid, 8960 lsp, resop)) { 8961 case NFS4_CHKSEQ_REPLAY: 8962 if (resp->status != NFS4_OK) { 8963 /* 8964 * Here is our replay and need 8965 * to verify that the last 8966 * response was an error. 8967 */ 8968 *cs->statusp = resp->status; 8969 goto end; 8970 } 8971 /* 8972 * This is done since the sequence id 8973 * looked like a replay but it didn't 8974 * pass our check so a BAD_SEQID is 8975 * returned as a result. 8976 */ 8977 /*FALLTHROUGH*/ 8978 case NFS4_CHKSEQ_BAD: 8979 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8980 goto end; 8981 case NFS4_CHKSEQ_OKAY: 8982 /* Everything looks okay move ahead */ 8983 break; 8984 } 8985 break; 8986 case NFS4_CHECK_STATEID_OLD: 8987 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8988 goto end; 8989 case NFS4_CHECK_STATEID_BAD: 8990 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8991 goto end; 8992 case NFS4_CHECK_STATEID_EXPIRED: 8993 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8994 goto end; 8995 case NFS4_CHECK_STATEID_CLOSED: 8996 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8997 goto end; 8998 case NFS4_CHECK_STATEID_REPLAY: 8999 switch (rfs4_check_lock_seqid( 9000 args->locker.locker4_u.lock_owner.lock_seqid, 9001 lsp, resop)) { 9002 case NFS4_CHKSEQ_OKAY: 9003 /* 9004 * This is a replayed stateid; if 9005 * seqid matches the next expected, 9006 * then client is using wrong seqid. 9007 */ 9008 case NFS4_CHKSEQ_BAD: 9009 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9010 goto end; 9011 case NFS4_CHKSEQ_REPLAY: 9012 rfs4_update_lease(lsp->rls_locker->rl_client); 9013 *cs->statusp = status = resp->status; 9014 goto end; 9015 } 9016 break; 9017 default: 9018 ASSERT(FALSE); 9019 break; 9020 } 9021 9022 rfs4_update_lock_sequence(lsp); 9023 rfs4_update_lease(lsp->rls_locker->rl_client); 9024 } 9025 9026 /* 9027 * NFS4 only allows locking on regular files, so 9028 * verify type of object. 9029 */ 9030 if (cs->vp->v_type != VREG) { 9031 if (cs->vp->v_type == VDIR) 9032 status = NFS4ERR_ISDIR; 9033 else 9034 status = NFS4ERR_INVAL; 9035 goto out; 9036 } 9037 9038 cp = lsp->rls_state->rs_owner->ro_client; 9039 9040 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9041 status = NFS4ERR_GRACE; 9042 goto out; 9043 } 9044 9045 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9046 status = NFS4ERR_NO_GRACE; 9047 goto out; 9048 } 9049 9050 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9051 status = NFS4ERR_NO_GRACE; 9052 goto out; 9053 } 9054 9055 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9056 cs->deleg = TRUE; 9057 9058 status = rfs4_do_lock(lsp, args->locktype, 9059 args->offset, args->length, cs->cr, resop); 9060 9061 out: 9062 lsp->rls_skip_seqid_check = FALSE; 9063 9064 *cs->statusp = resp->status = status; 9065 9066 if (status == NFS4_OK) { 9067 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9068 lsp->rls_lock_completed = TRUE; 9069 } 9070 /* 9071 * Only update the "OPEN" response here if this was a new 9072 * lock_owner 9073 */ 9074 if (sp) 9075 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9076 9077 rfs4_update_lock_resp(lsp, resop); 9078 9079 end: 9080 if (lsp) { 9081 if (ls_sw_held) 9082 rfs4_sw_exit(&lsp->rls_sw); 9083 /* 9084 * If an sp obtained, then the lsp does not represent 9085 * a lock on the file struct. 9086 */ 9087 if (sp != NULL) 9088 rfs4_lo_state_rele(lsp, FALSE); 9089 else 9090 rfs4_lo_state_rele(lsp, TRUE); 9091 } 9092 if (sp) { 9093 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9094 rfs4_state_rele(sp); 9095 } 9096 9097 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9098 LOCK4res *, resp); 9099 } 9100 9101 /* free function for LOCK/LOCKT */ 9102 static void 9103 lock_denied_free(nfs_resop4 *resop) 9104 { 9105 LOCK4denied *dp = NULL; 9106 9107 switch (resop->resop) { 9108 case OP_LOCK: 9109 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9110 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9111 break; 9112 case OP_LOCKT: 9113 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9114 dp = &resop->nfs_resop4_u.oplockt.denied; 9115 break; 9116 default: 9117 break; 9118 } 9119 9120 if (dp) 9121 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9122 } 9123 9124 /*ARGSUSED*/ 9125 void 9126 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9127 struct svc_req *req, struct compound_state *cs) 9128 { 9129 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9130 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9131 nfsstat4 status; 9132 stateid4 *stateid = &args->lock_stateid; 9133 rfs4_lo_state_t *lsp; 9134 9135 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9136 LOCKU4args *, args); 9137 9138 if (cs->vp == NULL) { 9139 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9140 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9141 LOCKU4res *, resp); 9142 return; 9143 } 9144 9145 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9146 *cs->statusp = resp->status = status; 9147 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9148 LOCKU4res *, resp); 9149 return; 9150 } 9151 9152 /* Ensure specified filehandle matches */ 9153 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9154 rfs4_lo_state_rele(lsp, TRUE); 9155 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9156 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9157 LOCKU4res *, resp); 9158 return; 9159 } 9160 9161 /* hold off other access to lsp while we tinker */ 9162 rfs4_sw_enter(&lsp->rls_sw); 9163 9164 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9165 case NFS4_CHECK_STATEID_OKAY: 9166 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9167 != NFS4_CHKSEQ_OKAY) { 9168 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9169 goto end; 9170 } 9171 break; 9172 case NFS4_CHECK_STATEID_OLD: 9173 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9174 goto end; 9175 case NFS4_CHECK_STATEID_BAD: 9176 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9177 goto end; 9178 case NFS4_CHECK_STATEID_EXPIRED: 9179 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9180 goto end; 9181 case NFS4_CHECK_STATEID_CLOSED: 9182 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9183 goto end; 9184 case NFS4_CHECK_STATEID_REPLAY: 9185 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9186 case NFS4_CHKSEQ_OKAY: 9187 /* 9188 * This is a replayed stateid; if 9189 * seqid matches the next expected, 9190 * then client is using wrong seqid. 9191 */ 9192 case NFS4_CHKSEQ_BAD: 9193 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9194 goto end; 9195 case NFS4_CHKSEQ_REPLAY: 9196 rfs4_update_lease(lsp->rls_locker->rl_client); 9197 *cs->statusp = status = resp->status; 9198 goto end; 9199 } 9200 break; 9201 default: 9202 ASSERT(FALSE); 9203 break; 9204 } 9205 9206 rfs4_update_lock_sequence(lsp); 9207 rfs4_update_lease(lsp->rls_locker->rl_client); 9208 9209 /* 9210 * NFS4 only allows locking on regular files, so 9211 * verify type of object. 9212 */ 9213 if (cs->vp->v_type != VREG) { 9214 if (cs->vp->v_type == VDIR) 9215 status = NFS4ERR_ISDIR; 9216 else 9217 status = NFS4ERR_INVAL; 9218 goto out; 9219 } 9220 9221 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9222 status = NFS4ERR_GRACE; 9223 goto out; 9224 } 9225 9226 status = rfs4_do_lock(lsp, args->locktype, 9227 args->offset, args->length, cs->cr, resop); 9228 9229 out: 9230 *cs->statusp = resp->status = status; 9231 9232 if (status == NFS4_OK) 9233 resp->lock_stateid = lsp->rls_lockid.stateid; 9234 9235 rfs4_update_lock_resp(lsp, resop); 9236 9237 end: 9238 rfs4_sw_exit(&lsp->rls_sw); 9239 rfs4_lo_state_rele(lsp, TRUE); 9240 9241 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9242 LOCKU4res *, resp); 9243 } 9244 9245 /* 9246 * LOCKT is a best effort routine, the client can not be guaranteed that 9247 * the status return is still in effect by the time the reply is received. 9248 * They are numerous race conditions in this routine, but we are not required 9249 * and can not be accurate. 9250 */ 9251 /*ARGSUSED*/ 9252 void 9253 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9254 struct svc_req *req, struct compound_state *cs) 9255 { 9256 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9257 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9258 rfs4_lockowner_t *lo; 9259 rfs4_client_t *cp; 9260 bool_t create = FALSE; 9261 struct flock64 flk; 9262 int error; 9263 int flag = FREAD | FWRITE; 9264 int ltype; 9265 length4 posix_length; 9266 sysid_t sysid; 9267 pid_t pid; 9268 9269 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9270 LOCKT4args *, args); 9271 9272 if (cs->vp == NULL) { 9273 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9274 goto out; 9275 } 9276 9277 /* 9278 * NFS4 only allows locking on regular files, so 9279 * verify type of object. 9280 */ 9281 if (cs->vp->v_type != VREG) { 9282 if (cs->vp->v_type == VDIR) 9283 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9284 else 9285 *cs->statusp = resp->status = NFS4ERR_INVAL; 9286 goto out; 9287 } 9288 9289 /* 9290 * Check out the clientid to ensure the server knows about it 9291 * so that we correctly inform the client of a server reboot. 9292 */ 9293 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9294 == NULL) { 9295 *cs->statusp = resp->status = 9296 rfs4_check_clientid(&args->owner.clientid, 0); 9297 goto out; 9298 } 9299 if (rfs4_lease_expired(cp)) { 9300 rfs4_client_close(cp); 9301 /* 9302 * Protocol doesn't allow returning NFS4ERR_STALE as 9303 * other operations do on this check so STALE_CLIENTID 9304 * is returned instead 9305 */ 9306 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9307 goto out; 9308 } 9309 9310 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9311 *cs->statusp = resp->status = NFS4ERR_GRACE; 9312 rfs4_client_rele(cp); 9313 goto out; 9314 } 9315 rfs4_client_rele(cp); 9316 9317 resp->status = NFS4_OK; 9318 9319 switch (args->locktype) { 9320 case READ_LT: 9321 case READW_LT: 9322 ltype = F_RDLCK; 9323 break; 9324 case WRITE_LT: 9325 case WRITEW_LT: 9326 ltype = F_WRLCK; 9327 break; 9328 } 9329 9330 posix_length = args->length; 9331 /* Check for zero length. To lock to end of file use all ones for V4 */ 9332 if (posix_length == 0) { 9333 *cs->statusp = resp->status = NFS4ERR_INVAL; 9334 goto out; 9335 } else if (posix_length == (length4)(~0)) { 9336 posix_length = 0; /* Posix to end of file */ 9337 } 9338 9339 /* Find or create a lockowner */ 9340 lo = rfs4_findlockowner(&args->owner, &create); 9341 9342 if (lo) { 9343 pid = lo->rl_pid; 9344 if ((resp->status = 9345 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9346 goto err; 9347 } else { 9348 pid = 0; 9349 sysid = lockt_sysid; 9350 } 9351 retry: 9352 flk.l_type = ltype; 9353 flk.l_whence = 0; /* SEEK_SET */ 9354 flk.l_start = args->offset; 9355 flk.l_len = posix_length; 9356 flk.l_sysid = sysid; 9357 flk.l_pid = pid; 9358 flag |= F_REMOTELOCK; 9359 9360 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9361 9362 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9363 if (flk.l_len < 0 || flk.l_start < 0) { 9364 resp->status = NFS4ERR_INVAL; 9365 goto err; 9366 } 9367 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9368 NULL, cs->cr, NULL); 9369 9370 /* 9371 * N.B. We map error values to nfsv4 errors. This is differrent 9372 * than puterrno4 routine. 9373 */ 9374 switch (error) { 9375 case 0: 9376 if (flk.l_type == F_UNLCK) 9377 resp->status = NFS4_OK; 9378 else { 9379 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9380 goto retry; 9381 resp->status = NFS4ERR_DENIED; 9382 } 9383 break; 9384 case EOVERFLOW: 9385 resp->status = NFS4ERR_INVAL; 9386 break; 9387 case EINVAL: 9388 resp->status = NFS4ERR_NOTSUPP; 9389 break; 9390 default: 9391 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9392 error); 9393 resp->status = NFS4ERR_SERVERFAULT; 9394 break; 9395 } 9396 9397 err: 9398 if (lo) 9399 rfs4_lockowner_rele(lo); 9400 *cs->statusp = resp->status; 9401 out: 9402 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9403 LOCKT4res *, resp); 9404 } 9405 9406 int 9407 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9408 { 9409 int err; 9410 int cmd; 9411 vnode_t *vp; 9412 struct shrlock shr; 9413 struct shr_locowner shr_loco; 9414 int fflags = 0; 9415 9416 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9417 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9418 9419 if (sp->rs_closed) 9420 return (NFS4ERR_OLD_STATEID); 9421 9422 vp = sp->rs_finfo->rf_vp; 9423 ASSERT(vp); 9424 9425 shr.s_access = shr.s_deny = 0; 9426 9427 if (access & OPEN4_SHARE_ACCESS_READ) { 9428 fflags |= FREAD; 9429 shr.s_access |= F_RDACC; 9430 } 9431 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9432 fflags |= FWRITE; 9433 shr.s_access |= F_WRACC; 9434 } 9435 ASSERT(shr.s_access); 9436 9437 if (deny & OPEN4_SHARE_DENY_READ) 9438 shr.s_deny |= F_RDDNY; 9439 if (deny & OPEN4_SHARE_DENY_WRITE) 9440 shr.s_deny |= F_WRDNY; 9441 9442 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9443 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9444 shr_loco.sl_pid = shr.s_pid; 9445 shr_loco.sl_id = shr.s_sysid; 9446 shr.s_owner = (caddr_t)&shr_loco; 9447 shr.s_own_len = sizeof (shr_loco); 9448 9449 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9450 9451 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9452 if (err != 0) { 9453 if (err == EAGAIN) 9454 err = NFS4ERR_SHARE_DENIED; 9455 else 9456 err = puterrno4(err); 9457 return (err); 9458 } 9459 9460 sp->rs_share_access |= access; 9461 sp->rs_share_deny |= deny; 9462 9463 return (0); 9464 } 9465 9466 int 9467 rfs4_unshare(rfs4_state_t *sp) 9468 { 9469 int err; 9470 struct shrlock shr; 9471 struct shr_locowner shr_loco; 9472 9473 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9474 9475 if (sp->rs_closed || sp->rs_share_access == 0) 9476 return (0); 9477 9478 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9479 ASSERT(sp->rs_finfo->rf_vp); 9480 9481 shr.s_access = shr.s_deny = 0; 9482 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9483 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9484 shr_loco.sl_pid = shr.s_pid; 9485 shr_loco.sl_id = shr.s_sysid; 9486 shr.s_owner = (caddr_t)&shr_loco; 9487 shr.s_own_len = sizeof (shr_loco); 9488 9489 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9490 NULL); 9491 if (err != 0) { 9492 err = puterrno4(err); 9493 return (err); 9494 } 9495 9496 sp->rs_share_access = 0; 9497 sp->rs_share_deny = 0; 9498 9499 return (0); 9500 9501 } 9502 9503 static int 9504 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9505 { 9506 struct clist *wcl; 9507 count4 count = rok->data_len; 9508 int wlist_len; 9509 9510 wcl = args->wlist; 9511 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9512 return (FALSE); 9513 } 9514 wcl = args->wlist; 9515 rok->wlist_len = wlist_len; 9516 rok->wlist = wcl; 9517 return (TRUE); 9518 } 9519 9520 /* tunable to disable server referrals */ 9521 int rfs4_no_referrals = 0; 9522 9523 /* 9524 * Find an NFS record in reparse point data. 9525 * Returns 0 for success and <0 or an errno value on failure. 9526 */ 9527 int 9528 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9529 { 9530 int err; 9531 char *stype, *val; 9532 nvlist_t *nvl; 9533 nvpair_t *curr; 9534 9535 if ((nvl = reparse_init()) == NULL) 9536 return (-1); 9537 9538 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9539 reparse_free(nvl); 9540 return (err); 9541 } 9542 9543 curr = NULL; 9544 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9545 if ((stype = nvpair_name(curr)) == NULL) { 9546 reparse_free(nvl); 9547 return (-2); 9548 } 9549 if (strncasecmp(stype, "NFS", 3) == 0) 9550 break; 9551 } 9552 9553 if ((curr == NULL) || 9554 (nvpair_value_string(curr, &val))) { 9555 reparse_free(nvl); 9556 return (-3); 9557 } 9558 *nvlp = nvl; 9559 *svcp = stype; 9560 *datap = val; 9561 return (0); 9562 } 9563 9564 int 9565 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9566 { 9567 nvlist_t *nvl; 9568 char *s, *d; 9569 9570 if (rfs4_no_referrals != 0) 9571 return (B_FALSE); 9572 9573 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9574 return (B_FALSE); 9575 9576 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9577 return (B_FALSE); 9578 9579 reparse_free(nvl); 9580 9581 return (B_TRUE); 9582 } 9583 9584 /* 9585 * There is a user-level copy of this routine in ref_subr.c. 9586 * Changes should be kept in sync. 9587 */ 9588 static int 9589 nfs4_create_components(char *path, component4 *comp4) 9590 { 9591 int slen, plen, ncomp; 9592 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9593 9594 if (path == NULL) 9595 return (0); 9596 9597 plen = strlen(path) + 1; /* include the terminator */ 9598 ori_path = path; 9599 ncomp = 0; 9600 9601 /* count number of components in the path */ 9602 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9603 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9604 if ((slen = nxtc - path) == 0) { 9605 path = nxtc + 1; 9606 continue; 9607 } 9608 9609 if (comp4 != NULL) { 9610 bcopy(path, buf, slen); 9611 buf[slen] = '\0'; 9612 (void) str_to_utf8(buf, &comp4[ncomp]); 9613 } 9614 9615 ncomp++; /* 1 valid component */ 9616 path = nxtc + 1; 9617 } 9618 if (*nxtc == '\0' || *nxtc == '\n') 9619 break; 9620 } 9621 9622 return (ncomp); 9623 } 9624 9625 /* 9626 * There is a user-level copy of this routine in ref_subr.c. 9627 * Changes should be kept in sync. 9628 */ 9629 static int 9630 make_pathname4(char *path, pathname4 *pathname) 9631 { 9632 int ncomp; 9633 component4 *comp4; 9634 9635 if (pathname == NULL) 9636 return (0); 9637 9638 if (path == NULL) { 9639 pathname->pathname4_val = NULL; 9640 pathname->pathname4_len = 0; 9641 return (0); 9642 } 9643 9644 /* count number of components to alloc buffer */ 9645 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9646 pathname->pathname4_val = NULL; 9647 pathname->pathname4_len = 0; 9648 return (0); 9649 } 9650 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9651 9652 /* copy components into allocated buffer */ 9653 ncomp = nfs4_create_components(path, comp4); 9654 9655 pathname->pathname4_val = comp4; 9656 pathname->pathname4_len = ncomp; 9657 9658 return (ncomp); 9659 } 9660 9661 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9662 9663 fs_locations4 * 9664 fetch_referral(vnode_t *vp, cred_t *cr) 9665 { 9666 nvlist_t *nvl; 9667 char *stype, *sdata; 9668 fs_locations4 *result; 9669 char buf[1024]; 9670 size_t bufsize; 9671 XDR xdr; 9672 int err; 9673 9674 /* 9675 * Check attrs to ensure it's a reparse point 9676 */ 9677 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9678 return (NULL); 9679 9680 /* 9681 * Look for an NFS record and get the type and data 9682 */ 9683 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9684 return (NULL); 9685 9686 /* 9687 * With the type and data, upcall to get the referral 9688 */ 9689 bufsize = sizeof (buf); 9690 bzero(buf, sizeof (buf)); 9691 err = reparse_kderef((const char *)stype, (const char *)sdata, 9692 buf, &bufsize); 9693 reparse_free(nvl); 9694 9695 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9696 char *, stype, char *, sdata, char *, buf, int, err); 9697 if (err) { 9698 cmn_err(CE_NOTE, 9699 "reparsed daemon not running: unable to get referral (%d)", 9700 err); 9701 return (NULL); 9702 } 9703 9704 /* 9705 * We get an XDR'ed record back from the kderef call 9706 */ 9707 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9708 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9709 err = xdr_fs_locations4(&xdr, result); 9710 XDR_DESTROY(&xdr); 9711 if (err != TRUE) { 9712 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9713 int, err); 9714 return (NULL); 9715 } 9716 9717 /* 9718 * Look at path to recover fs_root, ignoring the leading '/' 9719 */ 9720 (void) make_pathname4(vp->v_path, &result->fs_root); 9721 9722 return (result); 9723 } 9724 9725 char * 9726 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9727 { 9728 fs_locations4 *fsl; 9729 fs_location4 *fs; 9730 char *server, *path, *symbuf; 9731 static char *prefix = "/net/"; 9732 int i, size, npaths; 9733 uint_t len; 9734 9735 /* Get the referral */ 9736 if ((fsl = fetch_referral(vp, cr)) == NULL) 9737 return (NULL); 9738 9739 /* Deal with only the first location and first server */ 9740 fs = &fsl->locations_val[0]; 9741 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9742 if (server == NULL) { 9743 rfs4_free_fs_locations4(fsl); 9744 kmem_free(fsl, sizeof (fs_locations4)); 9745 return (NULL); 9746 } 9747 9748 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9749 size = strlen(prefix) + len; 9750 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9751 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9752 9753 /* Allocate the symlink buffer and fill it */ 9754 symbuf = kmem_zalloc(size, KM_SLEEP); 9755 (void) strcat(symbuf, prefix); 9756 (void) strcat(symbuf, server); 9757 kmem_free(server, len); 9758 9759 npaths = 0; 9760 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9761 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9762 if (path == NULL) 9763 continue; 9764 (void) strcat(symbuf, "/"); 9765 (void) strcat(symbuf, path); 9766 npaths++; 9767 kmem_free(path, len); 9768 } 9769 9770 rfs4_free_fs_locations4(fsl); 9771 kmem_free(fsl, sizeof (fs_locations4)); 9772 9773 if (strsz != NULL) 9774 *strsz = size; 9775 return (symbuf); 9776 } 9777 9778 /* 9779 * Check to see if we have a downrev Solaris client, so that we 9780 * can send it a symlink instead of a referral. 9781 */ 9782 int 9783 client_is_downrev(struct svc_req *req) 9784 { 9785 struct sockaddr *ca; 9786 rfs4_clntip_t *ci; 9787 bool_t create = FALSE; 9788 int is_downrev; 9789 9790 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9791 ASSERT(ca); 9792 ci = rfs4_find_clntip(ca, &create); 9793 if (ci == NULL) 9794 return (0); 9795 is_downrev = ci->ri_no_referrals; 9796 rfs4_dbe_rele(ci->ri_dbe); 9797 return (is_downrev); 9798 } 9799