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 /* 23 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2012, 2016 by Delphix. All rights reserved. 26 */ 27 28 /* 29 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 30 * All Rights Reserved 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 #include <sys/zone.h> 60 61 #include <fs/fs_reparse.h> 62 63 #include <rpc/types.h> 64 #include <rpc/auth.h> 65 #include <rpc/rpcsec_gss.h> 66 #include <rpc/svc.h> 67 68 #include <nfs/nfs.h> 69 #include <nfs/export.h> 70 #include <nfs/nfs_cmd.h> 71 #include <nfs/lm.h> 72 #include <nfs/nfs4.h> 73 74 #include <sys/strsubr.h> 75 #include <sys/strsun.h> 76 77 #include <inet/common.h> 78 #include <inet/ip.h> 79 #include <inet/ip6.h> 80 81 #include <sys/tsol/label.h> 82 #include <sys/tsol/tndb.h> 83 84 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 85 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 86 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 87 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 88 extern struct svc_ops rdma_svc_ops; 89 extern int nfs_loaned_buffers; 90 /* End of Tunables */ 91 92 static int rdma_setup_read_data4(READ4args *, READ4res *); 93 94 /* 95 * Used to bump the stateid4.seqid value and show changes in the stateid 96 */ 97 #define next_stateid(sp) (++(sp)->bits.chgseq) 98 99 /* 100 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 101 * This is used to return NFS4ERR_TOOSMALL when clients specify 102 * maxcount that isn't large enough to hold the smallest possible 103 * XDR encoded dirent. 104 * 105 * sizeof cookie (8 bytes) + 106 * sizeof name_len (4 bytes) + 107 * sizeof smallest (padded) name (4 bytes) + 108 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 109 * sizeof attrlist4_len (4 bytes) + 110 * sizeof next boolean (4 bytes) 111 * 112 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 113 * the smallest possible entry4 (assumes no attrs requested). 114 * sizeof nfsstat4 (4 bytes) + 115 * sizeof verifier4 (8 bytes) + 116 * sizeof entry4list bool (4 bytes) + 117 * sizeof entry4 (36 bytes) + 118 * sizeof eof bool (4 bytes) 119 * 120 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 121 * VOP_READDIR. Its value is the size of the maximum possible dirent 122 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 123 * required for a given name length. MAXNAMELEN is the maximum 124 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 125 * macros are to allow for . and .. entries -- just a minor tweak to try 126 * and guarantee that buffer we give to VOP_READDIR will be large enough 127 * to hold ., .., and the largest possible solaris dirent64. 128 */ 129 #define RFS4_MINLEN_ENTRY4 36 130 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 131 #define RFS4_MINLEN_RDDIR_BUF \ 132 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 133 134 /* 135 * It would be better to pad to 4 bytes since that's what XDR would do, 136 * but the dirents UFS gives us are already padded to 8, so just take 137 * what we're given. Dircount is only a hint anyway. Currently the 138 * solaris kernel is ASCII only, so there's no point in calling the 139 * UTF8 functions. 140 * 141 * dirent64: named padded to provide 8 byte struct alignment 142 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 143 * 144 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 145 * 146 */ 147 #define DIRENT64_TO_DIRCOUNT(dp) \ 148 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 149 150 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 151 152 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 153 154 u_longlong_t nfs4_srv_caller_id; 155 uint_t nfs4_srv_vkey = 0; 156 157 verifier4 Write4verf; 158 verifier4 Readdir4verf; 159 160 void rfs4_init_compound_state(struct compound_state *); 161 162 static void nullfree(caddr_t); 163 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 170 struct compound_state *); 171 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 172 struct compound_state *); 173 static void rfs4_op_create_free(nfs_resop4 *resop); 174 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 175 struct svc_req *, struct compound_state *); 176 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 177 struct svc_req *, struct compound_state *); 178 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 179 struct compound_state *); 180 static void rfs4_op_getattr_free(nfs_resop4 *); 181 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void rfs4_op_getfh_free(nfs_resop4 *); 184 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void lock_denied_free(nfs_resop4 *); 191 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 200 struct svc_req *req, struct compound_state *cs); 201 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 202 struct compound_state *); 203 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 204 struct compound_state *); 205 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 206 struct svc_req *, struct compound_state *); 207 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 208 struct svc_req *, struct compound_state *); 209 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_read_free(nfs_resop4 *); 218 static void rfs4_op_readdir_free(nfs_resop4 *resop); 219 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_readlink_free(nfs_resop4 *); 222 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 223 struct svc_req *, struct compound_state *); 224 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 237 struct compound_state *); 238 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 239 struct compound_state *); 240 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 241 struct svc_req *, struct compound_state *); 242 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 243 struct svc_req *req, struct compound_state *); 244 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 245 struct compound_state *); 246 static void rfs4_op_secinfo_free(nfs_resop4 *); 247 248 static nfsstat4 check_open_access(uint32_t, 249 struct compound_state *, struct svc_req *); 250 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 251 void rfs4_ss_clid(rfs4_client_t *); 252 253 /* 254 * translation table for attrs 255 */ 256 struct nfs4_ntov_table { 257 union nfs4_attr_u *na; 258 uint8_t amap[NFS4_MAXNUM_ATTRS]; 259 int attrcnt; 260 bool_t vfsstat; 261 }; 262 263 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 264 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 265 struct nfs4_svgetit_arg *sargp); 266 267 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 268 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 269 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 270 271 fem_t *deleg_rdops; 272 fem_t *deleg_wrops; 273 274 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 275 kmutex_t rfs4_servinst_lock; /* protects linked list */ 276 int rfs4_seen_first_compound; /* set first time we see one */ 277 278 /* 279 * NFS4 op dispatch table 280 */ 281 282 struct rfsv4disp { 283 void (*dis_proc)(); /* proc to call */ 284 void (*dis_resfree)(); /* frees space allocated by proc */ 285 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 286 }; 287 288 static struct rfsv4disp rfsv4disptab[] = { 289 /* 290 * NFS VERSION 4 291 */ 292 293 /* RFS_NULL = 0 */ 294 {rfs4_op_illegal, nullfree, 0}, 295 296 /* UNUSED = 1 */ 297 {rfs4_op_illegal, nullfree, 0}, 298 299 /* UNUSED = 2 */ 300 {rfs4_op_illegal, nullfree, 0}, 301 302 /* OP_ACCESS = 3 */ 303 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 304 305 /* OP_CLOSE = 4 */ 306 {rfs4_op_close, nullfree, 0}, 307 308 /* OP_COMMIT = 5 */ 309 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 310 311 /* OP_CREATE = 6 */ 312 {rfs4_op_create, nullfree, 0}, 313 314 /* OP_DELEGPURGE = 7 */ 315 {rfs4_op_delegpurge, nullfree, 0}, 316 317 /* OP_DELEGRETURN = 8 */ 318 {rfs4_op_delegreturn, nullfree, 0}, 319 320 /* OP_GETATTR = 9 */ 321 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 322 323 /* OP_GETFH = 10 */ 324 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 325 326 /* OP_LINK = 11 */ 327 {rfs4_op_link, nullfree, 0}, 328 329 /* OP_LOCK = 12 */ 330 {rfs4_op_lock, lock_denied_free, 0}, 331 332 /* OP_LOCKT = 13 */ 333 {rfs4_op_lockt, lock_denied_free, 0}, 334 335 /* OP_LOCKU = 14 */ 336 {rfs4_op_locku, nullfree, 0}, 337 338 /* OP_LOOKUP = 15 */ 339 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 340 341 /* OP_LOOKUPP = 16 */ 342 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 343 344 /* OP_NVERIFY = 17 */ 345 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 346 347 /* OP_OPEN = 18 */ 348 {rfs4_op_open, rfs4_free_reply, 0}, 349 350 /* OP_OPENATTR = 19 */ 351 {rfs4_op_openattr, nullfree, 0}, 352 353 /* OP_OPEN_CONFIRM = 20 */ 354 {rfs4_op_open_confirm, nullfree, 0}, 355 356 /* OP_OPEN_DOWNGRADE = 21 */ 357 {rfs4_op_open_downgrade, nullfree, 0}, 358 359 /* OP_OPEN_PUTFH = 22 */ 360 {rfs4_op_putfh, nullfree, RPC_ALL}, 361 362 /* OP_PUTPUBFH = 23 */ 363 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 364 365 /* OP_PUTROOTFH = 24 */ 366 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 367 368 /* OP_READ = 25 */ 369 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 370 371 /* OP_READDIR = 26 */ 372 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 373 374 /* OP_READLINK = 27 */ 375 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 376 377 /* OP_REMOVE = 28 */ 378 {rfs4_op_remove, nullfree, 0}, 379 380 /* OP_RENAME = 29 */ 381 {rfs4_op_rename, nullfree, 0}, 382 383 /* OP_RENEW = 30 */ 384 {rfs4_op_renew, nullfree, 0}, 385 386 /* OP_RESTOREFH = 31 */ 387 {rfs4_op_restorefh, nullfree, RPC_ALL}, 388 389 /* OP_SAVEFH = 32 */ 390 {rfs4_op_savefh, nullfree, RPC_ALL}, 391 392 /* OP_SECINFO = 33 */ 393 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 394 395 /* OP_SETATTR = 34 */ 396 {rfs4_op_setattr, nullfree, 0}, 397 398 /* OP_SETCLIENTID = 35 */ 399 {rfs4_op_setclientid, nullfree, 0}, 400 401 /* OP_SETCLIENTID_CONFIRM = 36 */ 402 {rfs4_op_setclientid_confirm, nullfree, 0}, 403 404 /* OP_VERIFY = 37 */ 405 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 406 407 /* OP_WRITE = 38 */ 408 {rfs4_op_write, nullfree, 0}, 409 410 /* OP_RELEASE_LOCKOWNER = 39 */ 411 {rfs4_op_release_lockowner, nullfree, 0}, 412 }; 413 414 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 415 416 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 417 418 #ifdef DEBUG 419 420 int rfs4_fillone_debug = 0; 421 int rfs4_no_stub_access = 1; 422 int rfs4_rddir_debug = 0; 423 424 static char *rfs4_op_string[] = { 425 "rfs4_op_null", 426 "rfs4_op_1 unused", 427 "rfs4_op_2 unused", 428 "rfs4_op_access", 429 "rfs4_op_close", 430 "rfs4_op_commit", 431 "rfs4_op_create", 432 "rfs4_op_delegpurge", 433 "rfs4_op_delegreturn", 434 "rfs4_op_getattr", 435 "rfs4_op_getfh", 436 "rfs4_op_link", 437 "rfs4_op_lock", 438 "rfs4_op_lockt", 439 "rfs4_op_locku", 440 "rfs4_op_lookup", 441 "rfs4_op_lookupp", 442 "rfs4_op_nverify", 443 "rfs4_op_open", 444 "rfs4_op_openattr", 445 "rfs4_op_open_confirm", 446 "rfs4_op_open_downgrade", 447 "rfs4_op_putfh", 448 "rfs4_op_putpubfh", 449 "rfs4_op_putrootfh", 450 "rfs4_op_read", 451 "rfs4_op_readdir", 452 "rfs4_op_readlink", 453 "rfs4_op_remove", 454 "rfs4_op_rename", 455 "rfs4_op_renew", 456 "rfs4_op_restorefh", 457 "rfs4_op_savefh", 458 "rfs4_op_secinfo", 459 "rfs4_op_setattr", 460 "rfs4_op_setclientid", 461 "rfs4_op_setclient_confirm", 462 "rfs4_op_verify", 463 "rfs4_op_write", 464 "rfs4_op_release_lockowner", 465 "rfs4_op_illegal" 466 }; 467 #endif 468 469 void rfs4_ss_chkclid(rfs4_client_t *); 470 471 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 472 473 extern void rfs4_free_fs_locations4(fs_locations4 *); 474 475 #ifdef nextdp 476 #undef nextdp 477 #endif 478 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 479 480 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 481 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 482 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 483 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 484 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 485 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 486 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 487 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 488 NULL, NULL 489 }; 490 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 491 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 492 VOPNAME_READ, { .femop_read = deleg_wr_read }, 493 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 494 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 495 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 496 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 497 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 498 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 499 NULL, NULL 500 }; 501 502 int 503 rfs4_srvrinit(void) 504 { 505 timespec32_t verf; 506 int error; 507 extern void rfs4_attr_init(); 508 extern krwlock_t rfs4_deleg_policy_lock; 509 510 /* 511 * The following algorithm attempts to find a unique verifier 512 * to be used as the write verifier returned from the server 513 * to the client. It is important that this verifier change 514 * whenever the server reboots. Of secondary importance, it 515 * is important for the verifier to be unique between two 516 * different servers. 517 * 518 * Thus, an attempt is made to use the system hostid and the 519 * current time in seconds when the nfssrv kernel module is 520 * loaded. It is assumed that an NFS server will not be able 521 * to boot and then to reboot in less than a second. If the 522 * hostid has not been set, then the current high resolution 523 * time is used. This will ensure different verifiers each 524 * time the server reboots and minimize the chances that two 525 * different servers will have the same verifier. 526 * XXX - this is broken on LP64 kernels. 527 */ 528 verf.tv_sec = (time_t)zone_get_hostid(NULL); 529 if (verf.tv_sec != 0) { 530 verf.tv_nsec = gethrestime_sec(); 531 } else { 532 timespec_t tverf; 533 534 gethrestime(&tverf); 535 verf.tv_sec = (time_t)tverf.tv_sec; 536 verf.tv_nsec = tverf.tv_nsec; 537 } 538 539 Write4verf = *(uint64_t *)&verf; 540 541 rfs4_attr_init(); 542 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 543 544 /* Used to manage create/destroy of server state */ 545 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 546 547 /* Used to manage access to server instance linked list */ 548 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 549 550 /* Used to manage access to rfs4_deleg_policy */ 551 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 552 553 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 554 if (error != 0) { 555 rfs4_disable_delegation(); 556 } else { 557 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 558 &deleg_wrops); 559 if (error != 0) { 560 rfs4_disable_delegation(); 561 fem_free(deleg_rdops); 562 } 563 } 564 565 nfs4_srv_caller_id = fs_new_caller_id(); 566 567 lockt_sysid = lm_alloc_sysidt(); 568 569 vsd_create(&nfs4_srv_vkey, NULL); 570 571 return (0); 572 } 573 574 void 575 rfs4_srvrfini(void) 576 { 577 extern krwlock_t rfs4_deleg_policy_lock; 578 579 if (lockt_sysid != LM_NOSYSID) { 580 lm_free_sysidt(lockt_sysid); 581 lockt_sysid = LM_NOSYSID; 582 } 583 584 mutex_destroy(&rfs4_deleg_lock); 585 mutex_destroy(&rfs4_state_lock); 586 rw_destroy(&rfs4_deleg_policy_lock); 587 588 fem_free(deleg_rdops); 589 fem_free(deleg_wrops); 590 } 591 592 void 593 rfs4_init_compound_state(struct compound_state *cs) 594 { 595 bzero(cs, sizeof (*cs)); 596 cs->cont = TRUE; 597 cs->access = CS_ACCESS_DENIED; 598 cs->deleg = FALSE; 599 cs->mandlock = FALSE; 600 cs->fh.nfs_fh4_val = cs->fhbuf; 601 } 602 603 void 604 rfs4_grace_start(rfs4_servinst_t *sip) 605 { 606 rw_enter(&sip->rwlock, RW_WRITER); 607 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 608 sip->grace_period = rfs4_grace_period; 609 rw_exit(&sip->rwlock); 610 } 611 612 /* 613 * returns true if the instance's grace period has never been started 614 */ 615 int 616 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 617 { 618 time_t start_time; 619 620 rw_enter(&sip->rwlock, RW_READER); 621 start_time = sip->start_time; 622 rw_exit(&sip->rwlock); 623 624 return (start_time == 0); 625 } 626 627 /* 628 * Indicates if server instance is within the 629 * grace period. 630 */ 631 int 632 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 633 { 634 time_t grace_expiry; 635 636 rw_enter(&sip->rwlock, RW_READER); 637 grace_expiry = sip->start_time + sip->grace_period; 638 rw_exit(&sip->rwlock); 639 640 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 641 } 642 643 int 644 rfs4_clnt_in_grace(rfs4_client_t *cp) 645 { 646 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 647 648 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 649 } 650 651 /* 652 * reset all currently active grace periods 653 */ 654 void 655 rfs4_grace_reset_all(void) 656 { 657 rfs4_servinst_t *sip; 658 659 mutex_enter(&rfs4_servinst_lock); 660 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 661 if (rfs4_servinst_in_grace(sip)) 662 rfs4_grace_start(sip); 663 mutex_exit(&rfs4_servinst_lock); 664 } 665 666 /* 667 * start any new instances' grace periods 668 */ 669 void 670 rfs4_grace_start_new(void) 671 { 672 rfs4_servinst_t *sip; 673 674 mutex_enter(&rfs4_servinst_lock); 675 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 676 if (rfs4_servinst_grace_new(sip)) 677 rfs4_grace_start(sip); 678 mutex_exit(&rfs4_servinst_lock); 679 } 680 681 static rfs4_dss_path_t * 682 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 683 { 684 size_t len; 685 rfs4_dss_path_t *dss_path; 686 687 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 688 689 /* 690 * Take a copy of the string, since the original may be overwritten. 691 * Sadly, no strdup() in the kernel. 692 */ 693 /* allow for NUL */ 694 len = strlen(path) + 1; 695 dss_path->path = kmem_alloc(len, KM_SLEEP); 696 (void) strlcpy(dss_path->path, path, len); 697 698 /* associate with servinst */ 699 dss_path->sip = sip; 700 dss_path->index = index; 701 702 /* 703 * Add to list of served paths. 704 * No locking required, as we're only ever called at startup. 705 */ 706 if (rfs4_dss_pathlist == NULL) { 707 /* this is the first dss_path_t */ 708 709 /* needed for insque/remque */ 710 dss_path->next = dss_path->prev = dss_path; 711 712 rfs4_dss_pathlist = dss_path; 713 } else { 714 insque(dss_path, rfs4_dss_pathlist); 715 } 716 717 return (dss_path); 718 } 719 720 /* 721 * Create a new server instance, and make it the currently active instance. 722 * Note that starting the grace period too early will reduce the clients' 723 * recovery window. 724 */ 725 void 726 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 727 { 728 unsigned i; 729 rfs4_servinst_t *sip; 730 rfs4_oldstate_t *oldstate; 731 732 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 733 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 734 735 sip->start_time = (time_t)0; 736 sip->grace_period = (time_t)0; 737 sip->next = NULL; 738 sip->prev = NULL; 739 740 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 741 /* 742 * This initial dummy entry is required to setup for insque/remque. 743 * It must be skipped over whenever the list is traversed. 744 */ 745 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 746 /* insque/remque require initial list entry to be self-terminated */ 747 oldstate->next = oldstate; 748 oldstate->prev = oldstate; 749 sip->oldstate = oldstate; 750 751 752 sip->dss_npaths = dss_npaths; 753 sip->dss_paths = kmem_alloc(dss_npaths * 754 sizeof (rfs4_dss_path_t *), KM_SLEEP); 755 756 for (i = 0; i < dss_npaths; i++) { 757 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 758 } 759 760 mutex_enter(&rfs4_servinst_lock); 761 if (rfs4_cur_servinst != NULL) { 762 /* add to linked list */ 763 sip->prev = rfs4_cur_servinst; 764 rfs4_cur_servinst->next = sip; 765 } 766 if (start_grace) 767 rfs4_grace_start(sip); 768 /* make the new instance "current" */ 769 rfs4_cur_servinst = sip; 770 771 mutex_exit(&rfs4_servinst_lock); 772 } 773 774 /* 775 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 776 * all instances directly. 777 */ 778 void 779 rfs4_servinst_destroy_all(void) 780 { 781 rfs4_servinst_t *sip, *prev, *current; 782 #ifdef DEBUG 783 int n = 0; 784 #endif 785 786 mutex_enter(&rfs4_servinst_lock); 787 ASSERT(rfs4_cur_servinst != NULL); 788 current = rfs4_cur_servinst; 789 rfs4_cur_servinst = NULL; 790 for (sip = current; sip != NULL; sip = prev) { 791 prev = sip->prev; 792 rw_destroy(&sip->rwlock); 793 if (sip->oldstate) 794 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 795 if (sip->dss_paths) 796 kmem_free(sip->dss_paths, 797 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 798 kmem_free(sip, sizeof (rfs4_servinst_t)); 799 #ifdef DEBUG 800 n++; 801 #endif 802 } 803 mutex_exit(&rfs4_servinst_lock); 804 } 805 806 /* 807 * Assign the current server instance to a client_t. 808 * Should be called with cp->rc_dbe held. 809 */ 810 void 811 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 812 { 813 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 814 815 /* 816 * The lock ensures that if the current instance is in the process 817 * of changing, we will see the new one. 818 */ 819 mutex_enter(&rfs4_servinst_lock); 820 cp->rc_server_instance = sip; 821 mutex_exit(&rfs4_servinst_lock); 822 } 823 824 rfs4_servinst_t * 825 rfs4_servinst(rfs4_client_t *cp) 826 { 827 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 828 829 return (cp->rc_server_instance); 830 } 831 832 /* ARGSUSED */ 833 static void 834 nullfree(caddr_t resop) 835 { 836 } 837 838 /* 839 * This is a fall-through for invalid or not implemented (yet) ops 840 */ 841 /* ARGSUSED */ 842 static void 843 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 844 struct compound_state *cs) 845 { 846 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 847 } 848 849 /* 850 * Check if the security flavor, nfsnum, is in the flavor_list. 851 */ 852 bool_t 853 in_flavor_list(int nfsnum, int *flavor_list, int count) 854 { 855 int i; 856 857 for (i = 0; i < count; i++) { 858 if (nfsnum == flavor_list[i]) 859 return (TRUE); 860 } 861 return (FALSE); 862 } 863 864 /* 865 * Used by rfs4_op_secinfo to get the security information from the 866 * export structure associated with the component. 867 */ 868 /* ARGSUSED */ 869 static nfsstat4 870 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 871 { 872 int error, different_export = 0; 873 vnode_t *dvp, *vp; 874 struct exportinfo *exi = NULL; 875 fid_t fid; 876 uint_t count, i; 877 secinfo4 *resok_val; 878 struct secinfo *secp; 879 seconfig_t *si; 880 bool_t did_traverse = FALSE; 881 int dotdot, walk; 882 883 dvp = cs->vp; 884 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 885 886 /* 887 * If dotdotting, then need to check whether it's above the 888 * root of a filesystem, or above an export point. 889 */ 890 if (dotdot) { 891 892 /* 893 * If dotdotting at the root of a filesystem, then 894 * need to traverse back to the mounted-on filesystem 895 * and do the dotdot lookup there. 896 */ 897 if (cs->vp->v_flag & VROOT) { 898 899 /* 900 * If at the system root, then can 901 * go up no further. 902 */ 903 if (VN_CMP(dvp, rootdir)) 904 return (puterrno4(ENOENT)); 905 906 /* 907 * Traverse back to the mounted-on filesystem 908 */ 909 dvp = untraverse(cs->vp); 910 911 /* 912 * Set the different_export flag so we remember 913 * to pick up a new exportinfo entry for 914 * this new filesystem. 915 */ 916 different_export = 1; 917 } else { 918 919 /* 920 * If dotdotting above an export point then set 921 * the different_export to get new export info. 922 */ 923 different_export = nfs_exported(cs->exi, cs->vp); 924 } 925 } 926 927 /* 928 * Get the vnode for the component "nm". 929 */ 930 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 931 NULL, NULL, NULL); 932 if (error) 933 return (puterrno4(error)); 934 935 /* 936 * If the vnode is in a pseudo filesystem, or if the security flavor 937 * used in the request is valid but not an explicitly shared flavor, 938 * or the access bit indicates that this is a limited access, 939 * check whether this vnode is visible. 940 */ 941 if (!different_export && 942 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 943 cs->access & CS_ACCESS_LIMITED)) { 944 if (! nfs_visible(cs->exi, vp, &different_export)) { 945 VN_RELE(vp); 946 return (puterrno4(ENOENT)); 947 } 948 } 949 950 /* 951 * If it's a mountpoint, then traverse it. 952 */ 953 if (vn_ismntpt(vp)) { 954 if ((error = traverse(&vp)) != 0) { 955 VN_RELE(vp); 956 return (puterrno4(error)); 957 } 958 /* remember that we had to traverse mountpoint */ 959 did_traverse = TRUE; 960 different_export = 1; 961 } else if (vp->v_vfsp != dvp->v_vfsp) { 962 /* 963 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 964 * then vp is probably an LOFS object. We don't need the 965 * realvp, we just need to know that we might have crossed 966 * a server fs boundary and need to call checkexport4. 967 * (LOFS lookup hides server fs mountpoints, and actually calls 968 * traverse) 969 */ 970 different_export = 1; 971 } 972 973 /* 974 * Get the export information for it. 975 */ 976 if (different_export) { 977 978 bzero(&fid, sizeof (fid)); 979 fid.fid_len = MAXFIDSZ; 980 error = vop_fid_pseudo(vp, &fid); 981 if (error) { 982 VN_RELE(vp); 983 return (puterrno4(error)); 984 } 985 986 if (dotdot) 987 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 988 else 989 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 990 991 if (exi == NULL) { 992 if (did_traverse == TRUE) { 993 /* 994 * If this vnode is a mounted-on vnode, 995 * but the mounted-on file system is not 996 * exported, send back the secinfo for 997 * the exported node that the mounted-on 998 * vnode lives in. 999 */ 1000 exi = cs->exi; 1001 } else { 1002 VN_RELE(vp); 1003 return (puterrno4(EACCES)); 1004 } 1005 } 1006 } else { 1007 exi = cs->exi; 1008 } 1009 ASSERT(exi != NULL); 1010 1011 1012 /* 1013 * Create the secinfo result based on the security information 1014 * from the exportinfo structure (exi). 1015 * 1016 * Return all flavors for a pseudo node. 1017 * For a real export node, return the flavor that the client 1018 * has access with. 1019 */ 1020 ASSERT(RW_LOCK_HELD(&exported_lock)); 1021 if (PSEUDO(exi)) { 1022 count = exi->exi_export.ex_seccnt; /* total sec count */ 1023 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1024 secp = exi->exi_export.ex_secinfo; 1025 1026 for (i = 0; i < count; i++) { 1027 si = &secp[i].s_secinfo; 1028 resok_val[i].flavor = si->sc_rpcnum; 1029 if (resok_val[i].flavor == RPCSEC_GSS) { 1030 rpcsec_gss_info *info; 1031 1032 info = &resok_val[i].flavor_info; 1033 info->qop = si->sc_qop; 1034 info->service = (rpc_gss_svc_t)si->sc_service; 1035 1036 /* get oid opaque data */ 1037 info->oid.sec_oid4_len = 1038 si->sc_gss_mech_type->length; 1039 info->oid.sec_oid4_val = kmem_alloc( 1040 si->sc_gss_mech_type->length, KM_SLEEP); 1041 bcopy( 1042 si->sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, 1044 info->oid.sec_oid4_len); 1045 } 1046 } 1047 resp->SECINFO4resok_len = count; 1048 resp->SECINFO4resok_val = resok_val; 1049 } else { 1050 int ret_cnt = 0, k = 0; 1051 int *flavor_list; 1052 1053 count = exi->exi_export.ex_seccnt; /* total sec count */ 1054 secp = exi->exi_export.ex_secinfo; 1055 1056 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1057 /* find out which flavors to return */ 1058 for (i = 0; i < count; i ++) { 1059 int access, flavor, perm; 1060 1061 flavor = secp[i].s_secinfo.sc_nfsnum; 1062 perm = secp[i].s_flags; 1063 1064 access = nfsauth4_secinfo_access(exi, cs->req, 1065 flavor, perm, cs->basecr); 1066 1067 if (! (access & NFSAUTH_DENIED) && 1068 ! (access & NFSAUTH_WRONGSEC)) { 1069 flavor_list[ret_cnt] = flavor; 1070 ret_cnt++; 1071 } 1072 } 1073 1074 /* Create the returning SECINFO value */ 1075 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1076 1077 for (i = 0; i < count; i++) { 1078 /* 1079 * If the flavor is in the flavor list, 1080 * fill in resok_val. 1081 */ 1082 si = &secp[i].s_secinfo; 1083 if (in_flavor_list(si->sc_nfsnum, 1084 flavor_list, ret_cnt)) { 1085 resok_val[k].flavor = si->sc_rpcnum; 1086 if (resok_val[k].flavor == RPCSEC_GSS) { 1087 rpcsec_gss_info *info; 1088 1089 info = &resok_val[k].flavor_info; 1090 info->qop = si->sc_qop; 1091 info->service = (rpc_gss_svc_t) 1092 si->sc_service; 1093 1094 /* get oid opaque data */ 1095 info->oid.sec_oid4_len = 1096 si->sc_gss_mech_type->length; 1097 info->oid.sec_oid4_val = kmem_alloc( 1098 si->sc_gss_mech_type->length, 1099 KM_SLEEP); 1100 bcopy(si->sc_gss_mech_type->elements, 1101 info->oid.sec_oid4_val, 1102 info->oid.sec_oid4_len); 1103 } 1104 k++; 1105 } 1106 if (k >= ret_cnt) 1107 break; 1108 } 1109 resp->SECINFO4resok_len = ret_cnt; 1110 resp->SECINFO4resok_val = resok_val; 1111 kmem_free(flavor_list, count * sizeof (int)); 1112 } 1113 1114 VN_RELE(vp); 1115 return (NFS4_OK); 1116 } 1117 1118 /* 1119 * SECINFO (Operation 33): Obtain required security information on 1120 * the component name in the format of (security-mechanism-oid, qop, service) 1121 * triplets. 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1126 struct compound_state *cs) 1127 { 1128 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1129 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1130 utf8string *utfnm = &args->name; 1131 uint_t len; 1132 char *nm; 1133 struct sockaddr *ca; 1134 char *name = NULL; 1135 nfsstat4 status = NFS4_OK; 1136 1137 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1138 SECINFO4args *, args); 1139 1140 /* 1141 * Current file handle (cfh) should have been set before getting 1142 * into this function. If not, return error. 1143 */ 1144 if (cs->vp == NULL) { 1145 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1146 goto out; 1147 } 1148 1149 if (cs->vp->v_type != VDIR) { 1150 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1151 goto out; 1152 } 1153 1154 /* 1155 * Verify the component name. If failed, error out, but 1156 * do not error out if the component name is a "..". 1157 * SECINFO will return its parents secinfo data for SECINFO "..". 1158 */ 1159 status = utf8_dir_verify(utfnm); 1160 if (status != NFS4_OK) { 1161 if (utfnm->utf8string_len != 2 || 1162 utfnm->utf8string_val[0] != '.' || 1163 utfnm->utf8string_val[1] != '.') { 1164 *cs->statusp = resp->status = status; 1165 goto out; 1166 } 1167 } 1168 1169 nm = utf8_to_str(utfnm, &len, NULL); 1170 if (nm == NULL) { 1171 *cs->statusp = resp->status = NFS4ERR_INVAL; 1172 goto out; 1173 } 1174 1175 if (len > MAXNAMELEN) { 1176 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1177 kmem_free(nm, len); 1178 goto out; 1179 } 1180 1181 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1182 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1183 MAXPATHLEN + 1); 1184 1185 if (name == NULL) { 1186 *cs->statusp = resp->status = NFS4ERR_INVAL; 1187 kmem_free(nm, len); 1188 goto out; 1189 } 1190 1191 1192 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1193 1194 if (name != nm) 1195 kmem_free(name, MAXPATHLEN + 1); 1196 kmem_free(nm, len); 1197 1198 out: 1199 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1200 SECINFO4res *, resp); 1201 } 1202 1203 /* 1204 * Free SECINFO result. 1205 */ 1206 /* ARGSUSED */ 1207 static void 1208 rfs4_op_secinfo_free(nfs_resop4 *resop) 1209 { 1210 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1211 int count, i; 1212 secinfo4 *resok_val; 1213 1214 /* If this is not an Ok result, nothing to free. */ 1215 if (resp->status != NFS4_OK) { 1216 return; 1217 } 1218 1219 count = resp->SECINFO4resok_len; 1220 resok_val = resp->SECINFO4resok_val; 1221 1222 for (i = 0; i < count; i++) { 1223 if (resok_val[i].flavor == RPCSEC_GSS) { 1224 rpcsec_gss_info *info; 1225 1226 info = &resok_val[i].flavor_info; 1227 kmem_free(info->oid.sec_oid4_val, 1228 info->oid.sec_oid4_len); 1229 } 1230 } 1231 kmem_free(resok_val, count * sizeof (secinfo4)); 1232 resp->SECINFO4resok_len = 0; 1233 resp->SECINFO4resok_val = NULL; 1234 } 1235 1236 /* ARGSUSED */ 1237 static void 1238 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1239 struct compound_state *cs) 1240 { 1241 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1242 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1243 int error; 1244 vnode_t *vp; 1245 struct vattr va; 1246 int checkwriteperm; 1247 cred_t *cr = cs->cr; 1248 bslabel_t *clabel, *slabel; 1249 ts_label_t *tslabel; 1250 boolean_t admin_low_client; 1251 1252 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1253 ACCESS4args *, args); 1254 1255 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1256 if (cs->access == CS_ACCESS_DENIED) { 1257 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1258 goto out; 1259 } 1260 #endif 1261 if (cs->vp == NULL) { 1262 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1263 goto out; 1264 } 1265 1266 ASSERT(cr != NULL); 1267 1268 vp = cs->vp; 1269 1270 /* 1271 * If the file system is exported read only, it is not appropriate 1272 * to check write permissions for regular files and directories. 1273 * Special files are interpreted by the client, so the underlying 1274 * permissions are sent back to the client for interpretation. 1275 */ 1276 if (rdonly4(req, cs) && 1277 (vp->v_type == VREG || vp->v_type == VDIR)) 1278 checkwriteperm = 0; 1279 else 1280 checkwriteperm = 1; 1281 1282 /* 1283 * XXX 1284 * We need the mode so that we can correctly determine access 1285 * permissions relative to a mandatory lock file. Access to 1286 * mandatory lock files is denied on the server, so it might 1287 * as well be reflected to the server during the open. 1288 */ 1289 va.va_mask = AT_MODE; 1290 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1291 if (error) { 1292 *cs->statusp = resp->status = puterrno4(error); 1293 goto out; 1294 } 1295 resp->access = 0; 1296 resp->supported = 0; 1297 1298 if (is_system_labeled()) { 1299 ASSERT(req->rq_label != NULL); 1300 clabel = req->rq_label; 1301 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1302 "got client label from request(1)", 1303 struct svc_req *, req); 1304 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1305 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1306 *cs->statusp = resp->status = puterrno4(EACCES); 1307 goto out; 1308 } 1309 slabel = label2bslabel(tslabel); 1310 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1311 char *, "got server label(1) for vp(2)", 1312 bslabel_t *, slabel, vnode_t *, vp); 1313 1314 admin_low_client = B_FALSE; 1315 } else 1316 admin_low_client = B_TRUE; 1317 } 1318 1319 if (args->access & ACCESS4_READ) { 1320 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1321 if (!error && !MANDLOCK(vp, va.va_mode) && 1322 (!is_system_labeled() || admin_low_client || 1323 bldominates(clabel, slabel))) 1324 resp->access |= ACCESS4_READ; 1325 resp->supported |= ACCESS4_READ; 1326 } 1327 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1328 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1329 if (!error && (!is_system_labeled() || admin_low_client || 1330 bldominates(clabel, slabel))) 1331 resp->access |= ACCESS4_LOOKUP; 1332 resp->supported |= ACCESS4_LOOKUP; 1333 } 1334 if (checkwriteperm && 1335 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1336 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1337 if (!error && !MANDLOCK(vp, va.va_mode) && 1338 (!is_system_labeled() || admin_low_client || 1339 blequal(clabel, slabel))) 1340 resp->access |= 1341 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1342 resp->supported |= 1343 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1344 } 1345 1346 if (checkwriteperm && 1347 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1348 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1349 if (!error && (!is_system_labeled() || admin_low_client || 1350 blequal(clabel, slabel))) 1351 resp->access |= ACCESS4_DELETE; 1352 resp->supported |= ACCESS4_DELETE; 1353 } 1354 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1355 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1356 if (!error && !MANDLOCK(vp, va.va_mode) && 1357 (!is_system_labeled() || admin_low_client || 1358 bldominates(clabel, slabel))) 1359 resp->access |= ACCESS4_EXECUTE; 1360 resp->supported |= ACCESS4_EXECUTE; 1361 } 1362 1363 if (is_system_labeled() && !admin_low_client) 1364 label_rele(tslabel); 1365 1366 *cs->statusp = resp->status = NFS4_OK; 1367 out: 1368 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1369 ACCESS4res *, resp); 1370 } 1371 1372 /* ARGSUSED */ 1373 static void 1374 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1375 struct compound_state *cs) 1376 { 1377 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1378 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1379 int error; 1380 vnode_t *vp = cs->vp; 1381 cred_t *cr = cs->cr; 1382 vattr_t va; 1383 1384 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1385 COMMIT4args *, args); 1386 1387 if (vp == NULL) { 1388 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1389 goto out; 1390 } 1391 if (cs->access == CS_ACCESS_DENIED) { 1392 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1393 goto out; 1394 } 1395 1396 if (args->offset + args->count < args->offset) { 1397 *cs->statusp = resp->status = NFS4ERR_INVAL; 1398 goto out; 1399 } 1400 1401 va.va_mask = AT_UID; 1402 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1403 1404 /* 1405 * If we can't get the attributes, then we can't do the 1406 * right access checking. So, we'll fail the request. 1407 */ 1408 if (error) { 1409 *cs->statusp = resp->status = puterrno4(error); 1410 goto out; 1411 } 1412 if (rdonly4(req, cs)) { 1413 *cs->statusp = resp->status = NFS4ERR_ROFS; 1414 goto out; 1415 } 1416 1417 if (vp->v_type != VREG) { 1418 if (vp->v_type == VDIR) 1419 resp->status = NFS4ERR_ISDIR; 1420 else 1421 resp->status = NFS4ERR_INVAL; 1422 *cs->statusp = resp->status; 1423 goto out; 1424 } 1425 1426 if (crgetuid(cr) != va.va_uid && 1427 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1428 *cs->statusp = resp->status = puterrno4(error); 1429 goto out; 1430 } 1431 1432 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1433 1434 if (error) { 1435 *cs->statusp = resp->status = puterrno4(error); 1436 goto out; 1437 } 1438 1439 *cs->statusp = resp->status = NFS4_OK; 1440 resp->writeverf = Write4verf; 1441 out: 1442 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1443 COMMIT4res *, resp); 1444 } 1445 1446 /* 1447 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1448 * was completed. It does the nfsv4 create for special files. 1449 */ 1450 /* ARGSUSED */ 1451 static vnode_t * 1452 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1453 struct compound_state *cs, vattr_t *vap, char *nm) 1454 { 1455 int error; 1456 cred_t *cr = cs->cr; 1457 vnode_t *dvp = cs->vp; 1458 vnode_t *vp = NULL; 1459 int mode; 1460 enum vcexcl excl; 1461 1462 switch (args->type) { 1463 case NF4CHR: 1464 case NF4BLK: 1465 if (secpolicy_sys_devices(cr) != 0) { 1466 *cs->statusp = resp->status = NFS4ERR_PERM; 1467 return (NULL); 1468 } 1469 if (args->type == NF4CHR) 1470 vap->va_type = VCHR; 1471 else 1472 vap->va_type = VBLK; 1473 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1474 args->ftype4_u.devdata.specdata2); 1475 vap->va_mask |= AT_RDEV; 1476 break; 1477 case NF4SOCK: 1478 vap->va_type = VSOCK; 1479 break; 1480 case NF4FIFO: 1481 vap->va_type = VFIFO; 1482 break; 1483 default: 1484 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1485 return (NULL); 1486 } 1487 1488 /* 1489 * Must specify the mode. 1490 */ 1491 if (!(vap->va_mask & AT_MODE)) { 1492 *cs->statusp = resp->status = NFS4ERR_INVAL; 1493 return (NULL); 1494 } 1495 1496 excl = EXCL; 1497 1498 mode = 0; 1499 1500 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1501 if (error) { 1502 *cs->statusp = resp->status = puterrno4(error); 1503 return (NULL); 1504 } 1505 return (vp); 1506 } 1507 1508 /* 1509 * nfsv4 create is used to create non-regular files. For regular files, 1510 * use nfsv4 open. 1511 */ 1512 /* ARGSUSED */ 1513 static void 1514 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1515 struct compound_state *cs) 1516 { 1517 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1518 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1519 int error; 1520 struct vattr bva, iva, iva2, ava, *vap; 1521 cred_t *cr = cs->cr; 1522 vnode_t *dvp = cs->vp; 1523 vnode_t *vp = NULL; 1524 vnode_t *realvp; 1525 char *nm, *lnm; 1526 uint_t len, llen; 1527 int syncval = 0; 1528 struct nfs4_svgetit_arg sarg; 1529 struct nfs4_ntov_table ntov; 1530 struct statvfs64 sb; 1531 nfsstat4 status; 1532 struct sockaddr *ca; 1533 char *name = NULL; 1534 char *lname = NULL; 1535 1536 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1537 CREATE4args *, args); 1538 1539 resp->attrset = 0; 1540 1541 if (dvp == NULL) { 1542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1543 goto out; 1544 } 1545 1546 /* 1547 * If there is an unshared filesystem mounted on this vnode, 1548 * do not allow to create an object in this directory. 1549 */ 1550 if (vn_ismntpt(dvp)) { 1551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1552 goto out; 1553 } 1554 1555 /* Verify that type is correct */ 1556 switch (args->type) { 1557 case NF4LNK: 1558 case NF4BLK: 1559 case NF4CHR: 1560 case NF4SOCK: 1561 case NF4FIFO: 1562 case NF4DIR: 1563 break; 1564 default: 1565 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1566 goto out; 1567 }; 1568 1569 if (cs->access == CS_ACCESS_DENIED) { 1570 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1571 goto out; 1572 } 1573 if (dvp->v_type != VDIR) { 1574 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1575 goto out; 1576 } 1577 status = utf8_dir_verify(&args->objname); 1578 if (status != NFS4_OK) { 1579 *cs->statusp = resp->status = status; 1580 goto out; 1581 } 1582 1583 if (rdonly4(req, cs)) { 1584 *cs->statusp = resp->status = NFS4ERR_ROFS; 1585 goto out; 1586 } 1587 1588 /* 1589 * Name of newly created object 1590 */ 1591 nm = utf8_to_fn(&args->objname, &len, NULL); 1592 if (nm == NULL) { 1593 *cs->statusp = resp->status = NFS4ERR_INVAL; 1594 goto out; 1595 } 1596 1597 if (len > MAXNAMELEN) { 1598 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1599 kmem_free(nm, len); 1600 goto out; 1601 } 1602 1603 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1604 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1605 MAXPATHLEN + 1); 1606 1607 if (name == NULL) { 1608 *cs->statusp = resp->status = NFS4ERR_INVAL; 1609 kmem_free(nm, len); 1610 goto out; 1611 } 1612 1613 resp->attrset = 0; 1614 1615 sarg.sbp = &sb; 1616 sarg.is_referral = B_FALSE; 1617 nfs4_ntov_table_init(&ntov); 1618 1619 status = do_rfs4_set_attrs(&resp->attrset, 1620 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1621 1622 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1623 status = NFS4ERR_INVAL; 1624 1625 if (status != NFS4_OK) { 1626 *cs->statusp = resp->status = status; 1627 if (name != nm) 1628 kmem_free(name, MAXPATHLEN + 1); 1629 kmem_free(nm, len); 1630 nfs4_ntov_table_free(&ntov, &sarg); 1631 resp->attrset = 0; 1632 goto out; 1633 } 1634 1635 /* Get "before" change value */ 1636 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1637 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1638 if (error) { 1639 *cs->statusp = resp->status = puterrno4(error); 1640 if (name != nm) 1641 kmem_free(name, MAXPATHLEN + 1); 1642 kmem_free(nm, len); 1643 nfs4_ntov_table_free(&ntov, &sarg); 1644 resp->attrset = 0; 1645 goto out; 1646 } 1647 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1648 1649 vap = sarg.vap; 1650 1651 /* 1652 * Set the default initial values for attributes when the parent 1653 * directory does not have the VSUID/VSGID bit set and they have 1654 * not been specified in createattrs. 1655 */ 1656 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1657 vap->va_uid = crgetuid(cr); 1658 vap->va_mask |= AT_UID; 1659 } 1660 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1661 vap->va_gid = crgetgid(cr); 1662 vap->va_mask |= AT_GID; 1663 } 1664 1665 vap->va_mask |= AT_TYPE; 1666 switch (args->type) { 1667 case NF4DIR: 1668 vap->va_type = VDIR; 1669 if ((vap->va_mask & AT_MODE) == 0) { 1670 vap->va_mode = 0700; /* default: owner rwx only */ 1671 vap->va_mask |= AT_MODE; 1672 } 1673 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1674 if (error) 1675 break; 1676 1677 /* 1678 * Get the initial "after" sequence number, if it fails, 1679 * set to zero 1680 */ 1681 iva.va_mask = AT_SEQ; 1682 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1683 iva.va_seq = 0; 1684 break; 1685 case NF4LNK: 1686 vap->va_type = VLNK; 1687 if ((vap->va_mask & AT_MODE) == 0) { 1688 vap->va_mode = 0700; /* default: owner rwx only */ 1689 vap->va_mask |= AT_MODE; 1690 } 1691 1692 /* 1693 * symlink names must be treated as data 1694 */ 1695 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1696 &llen, NULL); 1697 1698 if (lnm == NULL) { 1699 *cs->statusp = resp->status = NFS4ERR_INVAL; 1700 if (name != nm) 1701 kmem_free(name, MAXPATHLEN + 1); 1702 kmem_free(nm, len); 1703 nfs4_ntov_table_free(&ntov, &sarg); 1704 resp->attrset = 0; 1705 goto out; 1706 } 1707 1708 if (llen > MAXPATHLEN) { 1709 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1710 if (name != nm) 1711 kmem_free(name, MAXPATHLEN + 1); 1712 kmem_free(nm, len); 1713 kmem_free(lnm, llen); 1714 nfs4_ntov_table_free(&ntov, &sarg); 1715 resp->attrset = 0; 1716 goto out; 1717 } 1718 1719 lname = nfscmd_convname(ca, cs->exi, lnm, 1720 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1721 1722 if (lname == NULL) { 1723 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1724 if (name != nm) 1725 kmem_free(name, MAXPATHLEN + 1); 1726 kmem_free(nm, len); 1727 kmem_free(lnm, llen); 1728 nfs4_ntov_table_free(&ntov, &sarg); 1729 resp->attrset = 0; 1730 goto out; 1731 } 1732 1733 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1734 if (lname != lnm) 1735 kmem_free(lname, MAXPATHLEN + 1); 1736 kmem_free(lnm, llen); 1737 if (error) 1738 break; 1739 1740 /* 1741 * Get the initial "after" sequence number, if it fails, 1742 * set to zero 1743 */ 1744 iva.va_mask = AT_SEQ; 1745 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1746 iva.va_seq = 0; 1747 1748 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1749 NULL, NULL, NULL); 1750 if (error) 1751 break; 1752 1753 /* 1754 * va_seq is not safe over VOP calls, check it again 1755 * if it has changed zero out iva to force atomic = FALSE. 1756 */ 1757 iva2.va_mask = AT_SEQ; 1758 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1759 iva2.va_seq != iva.va_seq) 1760 iva.va_seq = 0; 1761 break; 1762 default: 1763 /* 1764 * probably a special file. 1765 */ 1766 if ((vap->va_mask & AT_MODE) == 0) { 1767 vap->va_mode = 0600; /* default: owner rw only */ 1768 vap->va_mask |= AT_MODE; 1769 } 1770 syncval = FNODSYNC; 1771 /* 1772 * We know this will only generate one VOP call 1773 */ 1774 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1775 1776 if (vp == NULL) { 1777 if (name != nm) 1778 kmem_free(name, MAXPATHLEN + 1); 1779 kmem_free(nm, len); 1780 nfs4_ntov_table_free(&ntov, &sarg); 1781 resp->attrset = 0; 1782 goto out; 1783 } 1784 1785 /* 1786 * Get the initial "after" sequence number, if it fails, 1787 * set to zero 1788 */ 1789 iva.va_mask = AT_SEQ; 1790 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1791 iva.va_seq = 0; 1792 1793 break; 1794 } 1795 if (name != nm) 1796 kmem_free(name, MAXPATHLEN + 1); 1797 kmem_free(nm, len); 1798 1799 if (error) { 1800 *cs->statusp = resp->status = puterrno4(error); 1801 } 1802 1803 /* 1804 * Force modified data and metadata out to stable storage. 1805 */ 1806 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1807 1808 if (resp->status != NFS4_OK) { 1809 if (vp != NULL) 1810 VN_RELE(vp); 1811 nfs4_ntov_table_free(&ntov, &sarg); 1812 resp->attrset = 0; 1813 goto out; 1814 } 1815 1816 /* 1817 * Finish setup of cinfo response, "before" value already set. 1818 * Get "after" change value, if it fails, simply return the 1819 * before value. 1820 */ 1821 ava.va_mask = AT_CTIME|AT_SEQ; 1822 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1823 ava.va_ctime = bva.va_ctime; 1824 ava.va_seq = 0; 1825 } 1826 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1827 1828 /* 1829 * True verification that object was created with correct 1830 * attrs is impossible. The attrs could have been changed 1831 * immediately after object creation. If attributes did 1832 * not verify, the only recourse for the server is to 1833 * destroy the object. Maybe if some attrs (like gid) 1834 * are set incorrectly, the object should be destroyed; 1835 * however, seems bad as a default policy. Do we really 1836 * want to destroy an object over one of the times not 1837 * verifying correctly? For these reasons, the server 1838 * currently sets bits in attrset for createattrs 1839 * that were set; however, no verification is done. 1840 * 1841 * vmask_to_nmask accounts for vattr bits set on create 1842 * [do_rfs4_set_attrs() only sets resp bits for 1843 * non-vattr/vfs bits.] 1844 * Mask off any bits set by default so as not to return 1845 * more attrset bits than were requested in createattrs 1846 */ 1847 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1848 resp->attrset &= args->createattrs.attrmask; 1849 nfs4_ntov_table_free(&ntov, &sarg); 1850 1851 error = makefh4(&cs->fh, vp, cs->exi); 1852 if (error) { 1853 *cs->statusp = resp->status = puterrno4(error); 1854 } 1855 1856 /* 1857 * The cinfo.atomic = TRUE only if we got no errors, we have 1858 * non-zero va_seq's, and it has incremented by exactly one 1859 * during the creation and it didn't change during the VOP_LOOKUP 1860 * or VOP_FSYNC. 1861 */ 1862 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1863 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1864 resp->cinfo.atomic = TRUE; 1865 else 1866 resp->cinfo.atomic = FALSE; 1867 1868 /* 1869 * Force modified metadata out to stable storage. 1870 * 1871 * if a underlying vp exists, pass it to VOP_FSYNC 1872 */ 1873 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1874 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1875 else 1876 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1877 1878 if (resp->status != NFS4_OK) { 1879 VN_RELE(vp); 1880 goto out; 1881 } 1882 if (cs->vp) 1883 VN_RELE(cs->vp); 1884 1885 cs->vp = vp; 1886 *cs->statusp = resp->status = NFS4_OK; 1887 out: 1888 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1889 CREATE4res *, resp); 1890 } 1891 1892 /*ARGSUSED*/ 1893 static void 1894 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1895 struct compound_state *cs) 1896 { 1897 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1898 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1899 1900 rfs4_op_inval(argop, resop, req, cs); 1901 1902 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1903 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1904 } 1905 1906 /*ARGSUSED*/ 1907 static void 1908 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1909 struct compound_state *cs) 1910 { 1911 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1912 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1913 rfs4_deleg_state_t *dsp; 1914 nfsstat4 status; 1915 1916 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1917 DELEGRETURN4args *, args); 1918 1919 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1920 resp->status = *cs->statusp = status; 1921 if (status != NFS4_OK) 1922 goto out; 1923 1924 /* Ensure specified filehandle matches */ 1925 if (cs->vp != dsp->rds_finfo->rf_vp) { 1926 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1927 } else 1928 rfs4_return_deleg(dsp, FALSE); 1929 1930 rfs4_update_lease(dsp->rds_client); 1931 1932 rfs4_deleg_state_rele(dsp); 1933 out: 1934 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1935 DELEGRETURN4res *, resp); 1936 } 1937 1938 /* 1939 * Check to see if a given "flavor" is an explicitly shared flavor. 1940 * The assumption of this routine is the "flavor" is already a valid 1941 * flavor in the secinfo list of "exi". 1942 * 1943 * e.g. 1944 * # share -o sec=flavor1 /export 1945 * # share -o sec=flavor2 /export/home 1946 * 1947 * flavor2 is not an explicitly shared flavor for /export, 1948 * however it is in the secinfo list for /export thru the 1949 * server namespace setup. 1950 */ 1951 int 1952 is_exported_sec(int flavor, struct exportinfo *exi) 1953 { 1954 int i; 1955 struct secinfo *sp; 1956 1957 sp = exi->exi_export.ex_secinfo; 1958 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1959 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1960 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1961 return (SEC_REF_EXPORTED(&sp[i])); 1962 } 1963 } 1964 1965 /* Should not reach this point based on the assumption */ 1966 return (0); 1967 } 1968 1969 /* 1970 * Check if the security flavor used in the request matches what is 1971 * required at the export point or at the root pseudo node (exi_root). 1972 * 1973 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1974 * 1975 */ 1976 static int 1977 secinfo_match_or_authnone(struct compound_state *cs) 1978 { 1979 int i; 1980 struct secinfo *sp; 1981 1982 /* 1983 * Check cs->nfsflavor (from the request) against 1984 * the current export data in cs->exi. 1985 */ 1986 sp = cs->exi->exi_export.ex_secinfo; 1987 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1988 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1989 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1990 return (1); 1991 } 1992 1993 return (0); 1994 } 1995 1996 /* 1997 * Check the access authority for the client and return the correct error. 1998 */ 1999 nfsstat4 2000 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2001 { 2002 int authres; 2003 2004 /* 2005 * First, check if the security flavor used in the request 2006 * are among the flavors set in the server namespace. 2007 */ 2008 if (!secinfo_match_or_authnone(cs)) { 2009 *cs->statusp = NFS4ERR_WRONGSEC; 2010 return (*cs->statusp); 2011 } 2012 2013 authres = checkauth4(cs, req); 2014 2015 if (authres > 0) { 2016 *cs->statusp = NFS4_OK; 2017 if (! (cs->access & CS_ACCESS_LIMITED)) 2018 cs->access = CS_ACCESS_OK; 2019 } else if (authres == 0) { 2020 *cs->statusp = NFS4ERR_ACCESS; 2021 } else if (authres == -2) { 2022 *cs->statusp = NFS4ERR_WRONGSEC; 2023 } else { 2024 *cs->statusp = NFS4ERR_DELAY; 2025 } 2026 return (*cs->statusp); 2027 } 2028 2029 /* 2030 * bitmap4_to_attrmask is called by getattr and readdir. 2031 * It sets up the vattr mask and determines whether vfsstat call is needed 2032 * based on the input bitmap. 2033 * Returns nfsv4 status. 2034 */ 2035 static nfsstat4 2036 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2037 { 2038 int i; 2039 uint_t va_mask; 2040 struct statvfs64 *sbp = sargp->sbp; 2041 2042 sargp->sbp = NULL; 2043 sargp->flag = 0; 2044 sargp->rdattr_error = NFS4_OK; 2045 sargp->mntdfid_set = FALSE; 2046 if (sargp->cs->vp) 2047 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2048 FH4_ATTRDIR | FH4_NAMEDATTR); 2049 else 2050 sargp->xattr = 0; 2051 2052 /* 2053 * Set rdattr_error_req to true if return error per 2054 * failed entry rather than fail the readdir. 2055 */ 2056 if (breq & FATTR4_RDATTR_ERROR_MASK) 2057 sargp->rdattr_error_req = 1; 2058 else 2059 sargp->rdattr_error_req = 0; 2060 2061 /* 2062 * generate the va_mask 2063 * Handle the easy cases first 2064 */ 2065 switch (breq) { 2066 case NFS4_NTOV_ATTR_MASK: 2067 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2068 return (NFS4_OK); 2069 2070 case NFS4_FS_ATTR_MASK: 2071 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2072 sargp->sbp = sbp; 2073 return (NFS4_OK); 2074 2075 case NFS4_NTOV_ATTR_CACHE_MASK: 2076 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2077 return (NFS4_OK); 2078 2079 case FATTR4_LEASE_TIME_MASK: 2080 sargp->vap->va_mask = 0; 2081 return (NFS4_OK); 2082 2083 default: 2084 va_mask = 0; 2085 for (i = 0; i < nfs4_ntov_map_size; i++) { 2086 if ((breq & nfs4_ntov_map[i].fbit) && 2087 nfs4_ntov_map[i].vbit) 2088 va_mask |= nfs4_ntov_map[i].vbit; 2089 } 2090 2091 /* 2092 * Check is vfsstat is needed 2093 */ 2094 if (breq & NFS4_FS_ATTR_MASK) 2095 sargp->sbp = sbp; 2096 2097 sargp->vap->va_mask = va_mask; 2098 return (NFS4_OK); 2099 } 2100 /* NOTREACHED */ 2101 } 2102 2103 /* 2104 * bitmap4_get_sysattrs is called by getattr and readdir. 2105 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2106 * Returns nfsv4 status. 2107 */ 2108 static nfsstat4 2109 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2110 { 2111 int error; 2112 struct compound_state *cs = sargp->cs; 2113 vnode_t *vp = cs->vp; 2114 2115 if (sargp->sbp != NULL) { 2116 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2117 sargp->sbp = NULL; /* to identify error */ 2118 return (puterrno4(error)); 2119 } 2120 } 2121 2122 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2123 } 2124 2125 static void 2126 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2127 { 2128 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2129 KM_SLEEP); 2130 ntovp->attrcnt = 0; 2131 ntovp->vfsstat = FALSE; 2132 } 2133 2134 static void 2135 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2136 struct nfs4_svgetit_arg *sargp) 2137 { 2138 int i; 2139 union nfs4_attr_u *na; 2140 uint8_t *amap; 2141 2142 /* 2143 * XXX Should do the same checks for whether the bit is set 2144 */ 2145 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2146 i < ntovp->attrcnt; i++, na++, amap++) { 2147 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2148 NFS4ATTR_FREEIT, sargp, na); 2149 } 2150 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2151 /* 2152 * xdr_free for getattr will be done later 2153 */ 2154 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2155 i < ntovp->attrcnt; i++, na++, amap++) { 2156 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2157 } 2158 } 2159 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2160 } 2161 2162 /* 2163 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2164 */ 2165 static nfsstat4 2166 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2167 struct nfs4_svgetit_arg *sargp) 2168 { 2169 int error = 0; 2170 int i, k; 2171 struct nfs4_ntov_table ntov; 2172 XDR xdr; 2173 ulong_t xdr_size; 2174 char *xdr_attrs; 2175 nfsstat4 status = NFS4_OK; 2176 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2177 union nfs4_attr_u *na; 2178 uint8_t *amap; 2179 2180 sargp->op = NFS4ATTR_GETIT; 2181 sargp->flag = 0; 2182 2183 fattrp->attrmask = 0; 2184 /* if no bits requested, then return empty fattr4 */ 2185 if (breq == 0) { 2186 fattrp->attrlist4_len = 0; 2187 fattrp->attrlist4 = NULL; 2188 return (NFS4_OK); 2189 } 2190 2191 /* 2192 * return NFS4ERR_INVAL when client requests write-only attrs 2193 */ 2194 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2195 return (NFS4ERR_INVAL); 2196 2197 nfs4_ntov_table_init(&ntov); 2198 na = ntov.na; 2199 amap = ntov.amap; 2200 2201 /* 2202 * Now loop to get or verify the attrs 2203 */ 2204 for (i = 0; i < nfs4_ntov_map_size; i++) { 2205 if (breq & nfs4_ntov_map[i].fbit) { 2206 if ((*nfs4_ntov_map[i].sv_getit)( 2207 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2208 2209 error = (*nfs4_ntov_map[i].sv_getit)( 2210 NFS4ATTR_GETIT, sargp, na); 2211 2212 /* 2213 * Possible error values: 2214 * >0 if sv_getit failed to 2215 * get the attr; 0 if succeeded; 2216 * <0 if rdattr_error and the 2217 * attribute cannot be returned. 2218 */ 2219 if (error && !(sargp->rdattr_error_req)) 2220 goto done; 2221 /* 2222 * If error then just for entry 2223 */ 2224 if (error == 0) { 2225 fattrp->attrmask |= 2226 nfs4_ntov_map[i].fbit; 2227 *amap++ = 2228 (uint8_t)nfs4_ntov_map[i].nval; 2229 na++; 2230 (ntov.attrcnt)++; 2231 } else if ((error > 0) && 2232 (sargp->rdattr_error == NFS4_OK)) { 2233 sargp->rdattr_error = puterrno4(error); 2234 } 2235 error = 0; 2236 } 2237 } 2238 } 2239 2240 /* 2241 * If rdattr_error was set after the return value for it was assigned, 2242 * update it. 2243 */ 2244 if (prev_rdattr_error != sargp->rdattr_error) { 2245 na = ntov.na; 2246 amap = ntov.amap; 2247 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2248 k = *amap; 2249 if (k < FATTR4_RDATTR_ERROR) { 2250 continue; 2251 } 2252 if ((k == FATTR4_RDATTR_ERROR) && 2253 ((*nfs4_ntov_map[k].sv_getit)( 2254 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2255 2256 (void) (*nfs4_ntov_map[k].sv_getit)( 2257 NFS4ATTR_GETIT, sargp, na); 2258 } 2259 break; 2260 } 2261 } 2262 2263 xdr_size = 0; 2264 na = ntov.na; 2265 amap = ntov.amap; 2266 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2267 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2268 } 2269 2270 fattrp->attrlist4_len = xdr_size; 2271 if (xdr_size) { 2272 /* freed by rfs4_op_getattr_free() */ 2273 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2274 2275 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2276 2277 na = ntov.na; 2278 amap = ntov.amap; 2279 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2280 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2281 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2282 int, *amap); 2283 status = NFS4ERR_SERVERFAULT; 2284 break; 2285 } 2286 } 2287 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2288 } else { 2289 fattrp->attrlist4 = NULL; 2290 } 2291 done: 2292 2293 nfs4_ntov_table_free(&ntov, sargp); 2294 2295 if (error != 0) 2296 status = puterrno4(error); 2297 2298 return (status); 2299 } 2300 2301 /* ARGSUSED */ 2302 static void 2303 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2304 struct compound_state *cs) 2305 { 2306 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2307 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2308 struct nfs4_svgetit_arg sarg; 2309 struct statvfs64 sb; 2310 nfsstat4 status; 2311 2312 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2313 GETATTR4args *, args); 2314 2315 if (cs->vp == NULL) { 2316 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2317 goto out; 2318 } 2319 2320 if (cs->access == CS_ACCESS_DENIED) { 2321 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2322 goto out; 2323 } 2324 2325 sarg.sbp = &sb; 2326 sarg.cs = cs; 2327 sarg.is_referral = B_FALSE; 2328 2329 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2330 if (status == NFS4_OK) { 2331 2332 status = bitmap4_get_sysattrs(&sarg); 2333 if (status == NFS4_OK) { 2334 2335 /* Is this a referral? */ 2336 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2337 /* Older V4 Solaris client sees a link */ 2338 if (client_is_downrev(req)) 2339 sarg.vap->va_type = VLNK; 2340 else 2341 sarg.is_referral = B_TRUE; 2342 } 2343 2344 status = do_rfs4_op_getattr(args->attr_request, 2345 &resp->obj_attributes, &sarg); 2346 } 2347 } 2348 *cs->statusp = resp->status = status; 2349 out: 2350 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2351 GETATTR4res *, resp); 2352 } 2353 2354 static void 2355 rfs4_op_getattr_free(nfs_resop4 *resop) 2356 { 2357 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2358 2359 nfs4_fattr4_free(&resp->obj_attributes); 2360 } 2361 2362 /* ARGSUSED */ 2363 static void 2364 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2365 struct compound_state *cs) 2366 { 2367 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2368 2369 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2370 2371 if (cs->vp == NULL) { 2372 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2373 goto out; 2374 } 2375 if (cs->access == CS_ACCESS_DENIED) { 2376 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2377 goto out; 2378 } 2379 2380 /* check for reparse point at the share point */ 2381 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2382 /* it's all bad */ 2383 cs->exi->exi_moved = 1; 2384 *cs->statusp = resp->status = NFS4ERR_MOVED; 2385 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2386 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2387 return; 2388 } 2389 2390 /* check for reparse point at vp */ 2391 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2392 /* it's not all bad */ 2393 *cs->statusp = resp->status = NFS4ERR_MOVED; 2394 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2395 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2396 return; 2397 } 2398 2399 resp->object.nfs_fh4_val = 2400 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2401 nfs_fh4_copy(&cs->fh, &resp->object); 2402 *cs->statusp = resp->status = NFS4_OK; 2403 out: 2404 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2405 GETFH4res *, resp); 2406 } 2407 2408 static void 2409 rfs4_op_getfh_free(nfs_resop4 *resop) 2410 { 2411 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2412 2413 if (resp->status == NFS4_OK && 2414 resp->object.nfs_fh4_val != NULL) { 2415 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2416 resp->object.nfs_fh4_val = NULL; 2417 resp->object.nfs_fh4_len = 0; 2418 } 2419 } 2420 2421 /* 2422 * illegal: args: void 2423 * res : status (NFS4ERR_OP_ILLEGAL) 2424 */ 2425 /* ARGSUSED */ 2426 static void 2427 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2428 struct svc_req *req, struct compound_state *cs) 2429 { 2430 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2431 2432 resop->resop = OP_ILLEGAL; 2433 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2434 } 2435 2436 /* 2437 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2438 * res: status. If success - CURRENT_FH unchanged, return change_info 2439 */ 2440 /* ARGSUSED */ 2441 static void 2442 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2443 struct compound_state *cs) 2444 { 2445 LINK4args *args = &argop->nfs_argop4_u.oplink; 2446 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2447 int error; 2448 vnode_t *vp; 2449 vnode_t *dvp; 2450 struct vattr bdva, idva, adva; 2451 char *nm; 2452 uint_t len; 2453 struct sockaddr *ca; 2454 char *name = NULL; 2455 nfsstat4 status; 2456 2457 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2458 LINK4args *, args); 2459 2460 /* SAVED_FH: source object */ 2461 vp = cs->saved_vp; 2462 if (vp == NULL) { 2463 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2464 goto out; 2465 } 2466 2467 /* CURRENT_FH: target directory */ 2468 dvp = cs->vp; 2469 if (dvp == NULL) { 2470 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2471 goto out; 2472 } 2473 2474 /* 2475 * If there is a non-shared filesystem mounted on this vnode, 2476 * do not allow to link any file in this directory. 2477 */ 2478 if (vn_ismntpt(dvp)) { 2479 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2480 goto out; 2481 } 2482 2483 if (cs->access == CS_ACCESS_DENIED) { 2484 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2485 goto out; 2486 } 2487 2488 /* Check source object's type validity */ 2489 if (vp->v_type == VDIR) { 2490 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2491 goto out; 2492 } 2493 2494 /* Check target directory's type */ 2495 if (dvp->v_type != VDIR) { 2496 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2497 goto out; 2498 } 2499 2500 if (cs->saved_exi != cs->exi) { 2501 *cs->statusp = resp->status = NFS4ERR_XDEV; 2502 goto out; 2503 } 2504 2505 status = utf8_dir_verify(&args->newname); 2506 if (status != NFS4_OK) { 2507 *cs->statusp = resp->status = status; 2508 goto out; 2509 } 2510 2511 nm = utf8_to_fn(&args->newname, &len, NULL); 2512 if (nm == NULL) { 2513 *cs->statusp = resp->status = NFS4ERR_INVAL; 2514 goto out; 2515 } 2516 2517 if (len > MAXNAMELEN) { 2518 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2519 kmem_free(nm, len); 2520 goto out; 2521 } 2522 2523 if (rdonly4(req, cs)) { 2524 *cs->statusp = resp->status = NFS4ERR_ROFS; 2525 kmem_free(nm, len); 2526 goto out; 2527 } 2528 2529 /* Get "before" change value */ 2530 bdva.va_mask = AT_CTIME|AT_SEQ; 2531 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2532 if (error) { 2533 *cs->statusp = resp->status = puterrno4(error); 2534 kmem_free(nm, len); 2535 goto out; 2536 } 2537 2538 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2539 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2540 MAXPATHLEN + 1); 2541 2542 if (name == NULL) { 2543 *cs->statusp = resp->status = NFS4ERR_INVAL; 2544 kmem_free(nm, len); 2545 goto out; 2546 } 2547 2548 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2549 2550 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2551 2552 if (nm != name) 2553 kmem_free(name, MAXPATHLEN + 1); 2554 kmem_free(nm, len); 2555 2556 /* 2557 * Get the initial "after" sequence number, if it fails, set to zero 2558 */ 2559 idva.va_mask = AT_SEQ; 2560 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2561 idva.va_seq = 0; 2562 2563 /* 2564 * Force modified data and metadata out to stable storage. 2565 */ 2566 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2567 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2568 2569 if (error) { 2570 *cs->statusp = resp->status = puterrno4(error); 2571 goto out; 2572 } 2573 2574 /* 2575 * Get "after" change value, if it fails, simply return the 2576 * before value. 2577 */ 2578 adva.va_mask = AT_CTIME|AT_SEQ; 2579 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2580 adva.va_ctime = bdva.va_ctime; 2581 adva.va_seq = 0; 2582 } 2583 2584 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2585 2586 /* 2587 * The cinfo.atomic = TRUE only if we have 2588 * non-zero va_seq's, and it has incremented by exactly one 2589 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2590 */ 2591 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2592 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2593 resp->cinfo.atomic = TRUE; 2594 else 2595 resp->cinfo.atomic = FALSE; 2596 2597 *cs->statusp = resp->status = NFS4_OK; 2598 out: 2599 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2600 LINK4res *, resp); 2601 } 2602 2603 /* 2604 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2605 */ 2606 2607 /* ARGSUSED */ 2608 static nfsstat4 2609 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2610 { 2611 int error; 2612 int different_export = 0; 2613 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2614 struct exportinfo *exi = NULL, *pre_exi = NULL; 2615 nfsstat4 stat; 2616 fid_t fid; 2617 int attrdir, dotdot, walk; 2618 bool_t is_newvp = FALSE; 2619 2620 if (cs->vp->v_flag & V_XATTRDIR) { 2621 attrdir = 1; 2622 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2623 } else { 2624 attrdir = 0; 2625 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2626 } 2627 2628 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2629 2630 /* 2631 * If dotdotting, then need to check whether it's 2632 * above the root of a filesystem, or above an 2633 * export point. 2634 */ 2635 if (dotdot) { 2636 2637 /* 2638 * If dotdotting at the root of a filesystem, then 2639 * need to traverse back to the mounted-on filesystem 2640 * and do the dotdot lookup there. 2641 */ 2642 if (cs->vp->v_flag & VROOT) { 2643 2644 /* 2645 * If at the system root, then can 2646 * go up no further. 2647 */ 2648 if (VN_CMP(cs->vp, rootdir)) 2649 return (puterrno4(ENOENT)); 2650 2651 /* 2652 * Traverse back to the mounted-on filesystem 2653 */ 2654 cs->vp = untraverse(cs->vp); 2655 2656 /* 2657 * Set the different_export flag so we remember 2658 * to pick up a new exportinfo entry for 2659 * this new filesystem. 2660 */ 2661 different_export = 1; 2662 } else { 2663 2664 /* 2665 * If dotdotting above an export point then set 2666 * the different_export to get new export info. 2667 */ 2668 different_export = nfs_exported(cs->exi, cs->vp); 2669 } 2670 } 2671 2672 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2673 NULL, NULL, NULL); 2674 if (error) 2675 return (puterrno4(error)); 2676 2677 /* 2678 * If the vnode is in a pseudo filesystem, check whether it is visible. 2679 * 2680 * XXX if the vnode is a symlink and it is not visible in 2681 * a pseudo filesystem, return ENOENT (not following symlink). 2682 * V4 client can not mount such symlink. This is a regression 2683 * from V2/V3. 2684 * 2685 * In the same exported filesystem, if the security flavor used 2686 * is not an explicitly shared flavor, limit the view to the visible 2687 * list entries only. This is not a WRONGSEC case because it's already 2688 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2689 */ 2690 if (!different_export && 2691 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2692 cs->access & CS_ACCESS_LIMITED)) { 2693 if (! nfs_visible(cs->exi, vp, &different_export)) { 2694 VN_RELE(vp); 2695 return (puterrno4(ENOENT)); 2696 } 2697 } 2698 2699 /* 2700 * If it's a mountpoint, then traverse it. 2701 */ 2702 if (vn_ismntpt(vp)) { 2703 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2704 pre_tvp = vp; /* save pre-traversed vnode */ 2705 2706 /* 2707 * hold pre_tvp to counteract rele by traverse. We will 2708 * need pre_tvp below if checkexport4 fails 2709 */ 2710 VN_HOLD(pre_tvp); 2711 if ((error = traverse(&vp)) != 0) { 2712 VN_RELE(vp); 2713 VN_RELE(pre_tvp); 2714 return (puterrno4(error)); 2715 } 2716 different_export = 1; 2717 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2718 /* 2719 * The vfsp comparison is to handle the case where 2720 * a LOFS mount is shared. lo_lookup traverses mount points, 2721 * and NFS is unaware of local fs transistions because 2722 * v_vfsmountedhere isn't set. For this special LOFS case, 2723 * the dir and the obj returned by lookup will have different 2724 * vfs ptrs. 2725 */ 2726 different_export = 1; 2727 } 2728 2729 if (different_export) { 2730 2731 bzero(&fid, sizeof (fid)); 2732 fid.fid_len = MAXFIDSZ; 2733 error = vop_fid_pseudo(vp, &fid); 2734 if (error) { 2735 VN_RELE(vp); 2736 if (pre_tvp) 2737 VN_RELE(pre_tvp); 2738 return (puterrno4(error)); 2739 } 2740 2741 if (dotdot) 2742 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2743 else 2744 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2745 2746 if (exi == NULL) { 2747 if (pre_tvp) { 2748 /* 2749 * If this vnode is a mounted-on vnode, 2750 * but the mounted-on file system is not 2751 * exported, send back the filehandle for 2752 * the mounted-on vnode, not the root of 2753 * the mounted-on file system. 2754 */ 2755 VN_RELE(vp); 2756 vp = pre_tvp; 2757 exi = pre_exi; 2758 } else { 2759 VN_RELE(vp); 2760 return (puterrno4(EACCES)); 2761 } 2762 } else if (pre_tvp) { 2763 /* we're done with pre_tvp now. release extra hold */ 2764 VN_RELE(pre_tvp); 2765 } 2766 2767 cs->exi = exi; 2768 2769 /* 2770 * Now we do a checkauth4. The reason is that 2771 * this client/user may not have access to the new 2772 * exported file system, and if they do, 2773 * the client/user may be mapped to a different uid. 2774 * 2775 * We start with a new cr, because the checkauth4 done 2776 * in the PUT*FH operation over wrote the cred's uid, 2777 * gid, etc, and we want the real thing before calling 2778 * checkauth4() 2779 */ 2780 crfree(cs->cr); 2781 cs->cr = crdup(cs->basecr); 2782 2783 oldvp = cs->vp; 2784 cs->vp = vp; 2785 is_newvp = TRUE; 2786 2787 stat = call_checkauth4(cs, req); 2788 if (stat != NFS4_OK) { 2789 VN_RELE(cs->vp); 2790 cs->vp = oldvp; 2791 return (stat); 2792 } 2793 } 2794 2795 /* 2796 * After various NFS checks, do a label check on the path 2797 * component. The label on this path should either be the 2798 * global zone's label or a zone's label. We are only 2799 * interested in the zone's label because exported files 2800 * in global zone is accessible (though read-only) to 2801 * clients. The exportability/visibility check is already 2802 * done before reaching this code. 2803 */ 2804 if (is_system_labeled()) { 2805 bslabel_t *clabel; 2806 2807 ASSERT(req->rq_label != NULL); 2808 clabel = req->rq_label; 2809 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2810 "got client label from request(1)", struct svc_req *, req); 2811 2812 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2813 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2814 cs->exi)) { 2815 error = EACCES; 2816 goto err_out; 2817 } 2818 } else { 2819 /* 2820 * We grant access to admin_low label clients 2821 * only if the client is trusted, i.e. also 2822 * running Solaris Trusted Extension. 2823 */ 2824 struct sockaddr *ca; 2825 int addr_type; 2826 void *ipaddr; 2827 tsol_tpc_t *tp; 2828 2829 ca = (struct sockaddr *)svc_getrpccaller( 2830 req->rq_xprt)->buf; 2831 if (ca->sa_family == AF_INET) { 2832 addr_type = IPV4_VERSION; 2833 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2834 } else if (ca->sa_family == AF_INET6) { 2835 addr_type = IPV6_VERSION; 2836 ipaddr = &((struct sockaddr_in6 *) 2837 ca)->sin6_addr; 2838 } 2839 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2840 if (tp == NULL || tp->tpc_tp.tp_doi != 2841 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2842 SUN_CIPSO) { 2843 if (tp != NULL) 2844 TPC_RELE(tp); 2845 error = EACCES; 2846 goto err_out; 2847 } 2848 TPC_RELE(tp); 2849 } 2850 } 2851 2852 error = makefh4(&cs->fh, vp, cs->exi); 2853 2854 err_out: 2855 if (error) { 2856 if (is_newvp) { 2857 VN_RELE(cs->vp); 2858 cs->vp = oldvp; 2859 } else 2860 VN_RELE(vp); 2861 return (puterrno4(error)); 2862 } 2863 2864 if (!is_newvp) { 2865 if (cs->vp) 2866 VN_RELE(cs->vp); 2867 cs->vp = vp; 2868 } else if (oldvp) 2869 VN_RELE(oldvp); 2870 2871 /* 2872 * if did lookup on attrdir and didn't lookup .., set named 2873 * attr fh flag 2874 */ 2875 if (attrdir && ! dotdot) 2876 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2877 2878 /* Assume false for now, open proc will set this */ 2879 cs->mandlock = FALSE; 2880 2881 return (NFS4_OK); 2882 } 2883 2884 /* ARGSUSED */ 2885 static void 2886 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2887 struct compound_state *cs) 2888 { 2889 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2890 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2891 char *nm; 2892 uint_t len; 2893 struct sockaddr *ca; 2894 char *name = NULL; 2895 nfsstat4 status; 2896 2897 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2898 LOOKUP4args *, args); 2899 2900 if (cs->vp == NULL) { 2901 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2902 goto out; 2903 } 2904 2905 if (cs->vp->v_type == VLNK) { 2906 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2907 goto out; 2908 } 2909 2910 if (cs->vp->v_type != VDIR) { 2911 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2912 goto out; 2913 } 2914 2915 status = utf8_dir_verify(&args->objname); 2916 if (status != NFS4_OK) { 2917 *cs->statusp = resp->status = status; 2918 goto out; 2919 } 2920 2921 nm = utf8_to_str(&args->objname, &len, NULL); 2922 if (nm == NULL) { 2923 *cs->statusp = resp->status = NFS4ERR_INVAL; 2924 goto out; 2925 } 2926 2927 if (len > MAXNAMELEN) { 2928 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2929 kmem_free(nm, len); 2930 goto out; 2931 } 2932 2933 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2934 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2935 MAXPATHLEN + 1); 2936 2937 if (name == NULL) { 2938 *cs->statusp = resp->status = NFS4ERR_INVAL; 2939 kmem_free(nm, len); 2940 goto out; 2941 } 2942 2943 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2944 2945 if (name != nm) 2946 kmem_free(name, MAXPATHLEN + 1); 2947 kmem_free(nm, len); 2948 2949 out: 2950 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2951 LOOKUP4res *, resp); 2952 } 2953 2954 /* ARGSUSED */ 2955 static void 2956 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2957 struct compound_state *cs) 2958 { 2959 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2960 2961 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2962 2963 if (cs->vp == NULL) { 2964 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2965 goto out; 2966 } 2967 2968 if (cs->vp->v_type != VDIR) { 2969 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2970 goto out; 2971 } 2972 2973 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2974 2975 /* 2976 * From NFSV4 Specification, LOOKUPP should not check for 2977 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2978 */ 2979 if (resp->status == NFS4ERR_WRONGSEC) { 2980 *cs->statusp = resp->status = NFS4_OK; 2981 } 2982 2983 out: 2984 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2985 LOOKUPP4res *, resp); 2986 } 2987 2988 2989 /*ARGSUSED2*/ 2990 static void 2991 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2992 struct compound_state *cs) 2993 { 2994 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2995 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2996 vnode_t *avp = NULL; 2997 int lookup_flags = LOOKUP_XATTR, error; 2998 int exp_ro = 0; 2999 3000 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3001 OPENATTR4args *, args); 3002 3003 if (cs->vp == NULL) { 3004 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3005 goto out; 3006 } 3007 3008 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3009 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3010 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3011 goto out; 3012 } 3013 3014 /* 3015 * If file system supports passing ACE mask to VOP_ACCESS then 3016 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3017 */ 3018 3019 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3020 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3021 V_ACE_MASK, cs->cr, NULL); 3022 else 3023 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3024 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3025 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3026 3027 if (error) { 3028 *cs->statusp = resp->status = puterrno4(EACCES); 3029 goto out; 3030 } 3031 3032 /* 3033 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3034 * the file system is exported read-only -- regardless of 3035 * createdir flag. Otherwise the attrdir would be created 3036 * (assuming server fs isn't mounted readonly locally). If 3037 * VOP_LOOKUP returns ENOENT in this case, the error will 3038 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3039 * because specfs has no VOP_LOOKUP op, so the macro would 3040 * return ENOSYS. EINVAL is returned by all (current) 3041 * Solaris file system implementations when any of their 3042 * restrictions are violated (xattr(dir) can't have xattrdir). 3043 * Returning NOTSUPP is more appropriate in this case 3044 * because the object will never be able to have an attrdir. 3045 */ 3046 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3047 lookup_flags |= CREATE_XATTR_DIR; 3048 3049 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3050 NULL, NULL, NULL); 3051 3052 if (error) { 3053 if (error == ENOENT && args->createdir && exp_ro) 3054 *cs->statusp = resp->status = puterrno4(EROFS); 3055 else if (error == EINVAL || error == ENOSYS) 3056 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3057 else 3058 *cs->statusp = resp->status = puterrno4(error); 3059 goto out; 3060 } 3061 3062 ASSERT(avp->v_flag & V_XATTRDIR); 3063 3064 error = makefh4(&cs->fh, avp, cs->exi); 3065 3066 if (error) { 3067 VN_RELE(avp); 3068 *cs->statusp = resp->status = puterrno4(error); 3069 goto out; 3070 } 3071 3072 VN_RELE(cs->vp); 3073 cs->vp = avp; 3074 3075 /* 3076 * There is no requirement for an attrdir fh flag 3077 * because the attrdir has a vnode flag to distinguish 3078 * it from regular (non-xattr) directories. The 3079 * FH4_ATTRDIR flag is set for future sanity checks. 3080 */ 3081 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3082 *cs->statusp = resp->status = NFS4_OK; 3083 3084 out: 3085 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3086 OPENATTR4res *, resp); 3087 } 3088 3089 static int 3090 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3091 caller_context_t *ct) 3092 { 3093 int error; 3094 int i; 3095 clock_t delaytime; 3096 3097 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3098 3099 /* 3100 * Don't block on mandatory locks. If this routine returns 3101 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3102 */ 3103 uio->uio_fmode = FNONBLOCK; 3104 3105 for (i = 0; i < rfs4_maxlock_tries; i++) { 3106 3107 3108 if (direction == FREAD) { 3109 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3110 error = VOP_READ(vp, uio, ioflag, cred, ct); 3111 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3112 } else { 3113 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3114 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3115 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3116 } 3117 3118 if (error != EAGAIN) 3119 break; 3120 3121 if (i < rfs4_maxlock_tries - 1) { 3122 delay(delaytime); 3123 delaytime *= 2; 3124 } 3125 } 3126 3127 return (error); 3128 } 3129 3130 /* ARGSUSED */ 3131 static void 3132 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3133 struct compound_state *cs) 3134 { 3135 READ4args *args = &argop->nfs_argop4_u.opread; 3136 READ4res *resp = &resop->nfs_resop4_u.opread; 3137 int error; 3138 int verror; 3139 vnode_t *vp; 3140 struct vattr va; 3141 struct iovec iov, *iovp = NULL; 3142 int iovcnt; 3143 struct uio uio; 3144 u_offset_t offset; 3145 bool_t *deleg = &cs->deleg; 3146 nfsstat4 stat; 3147 int in_crit = 0; 3148 mblk_t *mp = NULL; 3149 int alloc_err = 0; 3150 int rdma_used = 0; 3151 int loaned_buffers; 3152 caller_context_t ct; 3153 struct uio *uiop; 3154 3155 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3156 READ4args, args); 3157 3158 vp = cs->vp; 3159 if (vp == NULL) { 3160 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3161 goto out; 3162 } 3163 if (cs->access == CS_ACCESS_DENIED) { 3164 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3165 goto out; 3166 } 3167 3168 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3169 deleg, TRUE, &ct)) != NFS4_OK) { 3170 *cs->statusp = resp->status = stat; 3171 goto out; 3172 } 3173 3174 /* 3175 * Enter the critical region before calling VOP_RWLOCK 3176 * to avoid a deadlock with write requests. 3177 */ 3178 if (nbl_need_check(vp)) { 3179 nbl_start_crit(vp, RW_READER); 3180 in_crit = 1; 3181 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3182 &ct)) { 3183 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3184 goto out; 3185 } 3186 } 3187 3188 if (args->wlist) { 3189 if (args->count > clist_len(args->wlist)) { 3190 *cs->statusp = resp->status = NFS4ERR_INVAL; 3191 goto out; 3192 } 3193 rdma_used = 1; 3194 } 3195 3196 /* use loaned buffers for TCP */ 3197 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3198 3199 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3200 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3201 3202 /* 3203 * If we can't get the attributes, then we can't do the 3204 * right access checking. So, we'll fail the request. 3205 */ 3206 if (verror) { 3207 *cs->statusp = resp->status = puterrno4(verror); 3208 goto out; 3209 } 3210 3211 if (vp->v_type != VREG) { 3212 *cs->statusp = resp->status = 3213 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3214 goto out; 3215 } 3216 3217 if (crgetuid(cs->cr) != va.va_uid && 3218 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3219 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3220 *cs->statusp = resp->status = puterrno4(error); 3221 goto out; 3222 } 3223 3224 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3225 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3226 goto out; 3227 } 3228 3229 offset = args->offset; 3230 if (offset >= va.va_size) { 3231 *cs->statusp = resp->status = NFS4_OK; 3232 resp->eof = TRUE; 3233 resp->data_len = 0; 3234 resp->data_val = NULL; 3235 resp->mblk = NULL; 3236 /* RDMA */ 3237 resp->wlist = args->wlist; 3238 resp->wlist_len = resp->data_len; 3239 *cs->statusp = resp->status = NFS4_OK; 3240 if (resp->wlist) 3241 clist_zero_len(resp->wlist); 3242 goto out; 3243 } 3244 3245 if (args->count == 0) { 3246 *cs->statusp = resp->status = NFS4_OK; 3247 resp->eof = FALSE; 3248 resp->data_len = 0; 3249 resp->data_val = NULL; 3250 resp->mblk = NULL; 3251 /* RDMA */ 3252 resp->wlist = args->wlist; 3253 resp->wlist_len = resp->data_len; 3254 if (resp->wlist) 3255 clist_zero_len(resp->wlist); 3256 goto out; 3257 } 3258 3259 /* 3260 * Do not allocate memory more than maximum allowed 3261 * transfer size 3262 */ 3263 if (args->count > rfs4_tsize(req)) 3264 args->count = rfs4_tsize(req); 3265 3266 if (loaned_buffers) { 3267 uiop = (uio_t *)rfs_setup_xuio(vp); 3268 ASSERT(uiop != NULL); 3269 uiop->uio_segflg = UIO_SYSSPACE; 3270 uiop->uio_loffset = args->offset; 3271 uiop->uio_resid = args->count; 3272 3273 /* Jump to do the read if successful */ 3274 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3275 /* 3276 * Need to hold the vnode until after VOP_RETZCBUF() 3277 * is called. 3278 */ 3279 VN_HOLD(vp); 3280 goto doio_read; 3281 } 3282 3283 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3284 uiop->uio_loffset, int, uiop->uio_resid); 3285 3286 uiop->uio_extflg = 0; 3287 3288 /* failure to setup for zero copy */ 3289 rfs_free_xuio((void *)uiop); 3290 loaned_buffers = 0; 3291 } 3292 3293 /* 3294 * If returning data via RDMA Write, then grab the chunk list. If we 3295 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3296 */ 3297 if (rdma_used) { 3298 mp = NULL; 3299 (void) rdma_get_wchunk(req, &iov, args->wlist); 3300 uio.uio_iov = &iov; 3301 uio.uio_iovcnt = 1; 3302 } else { 3303 /* 3304 * mp will contain the data to be sent out in the read reply. 3305 * It will be freed after the reply has been sent. 3306 */ 3307 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3308 ASSERT(mp != NULL); 3309 ASSERT(alloc_err == 0); 3310 uio.uio_iov = iovp; 3311 uio.uio_iovcnt = iovcnt; 3312 } 3313 3314 uio.uio_segflg = UIO_SYSSPACE; 3315 uio.uio_extflg = UIO_COPY_CACHED; 3316 uio.uio_loffset = args->offset; 3317 uio.uio_resid = args->count; 3318 uiop = &uio; 3319 3320 doio_read: 3321 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3322 3323 va.va_mask = AT_SIZE; 3324 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3325 3326 if (error) { 3327 if (mp) 3328 freemsg(mp); 3329 *cs->statusp = resp->status = puterrno4(error); 3330 goto out; 3331 } 3332 3333 /* make mblk using zc buffers */ 3334 if (loaned_buffers) { 3335 mp = uio_to_mblk(uiop); 3336 ASSERT(mp != NULL); 3337 } 3338 3339 *cs->statusp = resp->status = NFS4_OK; 3340 3341 ASSERT(uiop->uio_resid >= 0); 3342 resp->data_len = args->count - uiop->uio_resid; 3343 if (mp) { 3344 resp->data_val = (char *)mp->b_datap->db_base; 3345 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3346 } else { 3347 resp->data_val = (caddr_t)iov.iov_base; 3348 } 3349 3350 resp->mblk = mp; 3351 3352 if (!verror && offset + resp->data_len == va.va_size) 3353 resp->eof = TRUE; 3354 else 3355 resp->eof = FALSE; 3356 3357 if (rdma_used) { 3358 if (!rdma_setup_read_data4(args, resp)) { 3359 *cs->statusp = resp->status = NFS4ERR_INVAL; 3360 } 3361 } else { 3362 resp->wlist = NULL; 3363 } 3364 3365 out: 3366 if (in_crit) 3367 nbl_end_crit(vp); 3368 3369 if (iovp != NULL) 3370 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3371 3372 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3373 READ4res *, resp); 3374 } 3375 3376 static void 3377 rfs4_op_read_free(nfs_resop4 *resop) 3378 { 3379 READ4res *resp = &resop->nfs_resop4_u.opread; 3380 3381 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3382 freemsg(resp->mblk); 3383 resp->mblk = NULL; 3384 resp->data_val = NULL; 3385 resp->data_len = 0; 3386 } 3387 } 3388 3389 static void 3390 rfs4_op_readdir_free(nfs_resop4 * resop) 3391 { 3392 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3393 3394 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3395 freeb(resp->mblk); 3396 resp->mblk = NULL; 3397 resp->data_len = 0; 3398 } 3399 } 3400 3401 3402 /* ARGSUSED */ 3403 static void 3404 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3405 struct compound_state *cs) 3406 { 3407 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3408 int error; 3409 vnode_t *vp; 3410 struct exportinfo *exi, *sav_exi; 3411 nfs_fh4_fmt_t *fh_fmtp; 3412 3413 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3414 3415 if (cs->vp) { 3416 VN_RELE(cs->vp); 3417 cs->vp = NULL; 3418 } 3419 3420 if (cs->cr) 3421 crfree(cs->cr); 3422 3423 cs->cr = crdup(cs->basecr); 3424 3425 vp = exi_public->exi_vp; 3426 if (vp == NULL) { 3427 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3428 goto out; 3429 } 3430 3431 error = makefh4(&cs->fh, vp, exi_public); 3432 if (error != 0) { 3433 *cs->statusp = resp->status = puterrno4(error); 3434 goto out; 3435 } 3436 sav_exi = cs->exi; 3437 if (exi_public == exi_root) { 3438 /* 3439 * No filesystem is actually shared public, so we default 3440 * to exi_root. In this case, we must check whether root 3441 * is exported. 3442 */ 3443 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3444 3445 /* 3446 * if root filesystem is exported, the exportinfo struct that we 3447 * should use is what checkexport4 returns, because root_exi is 3448 * actually a mostly empty struct. 3449 */ 3450 exi = checkexport4(&fh_fmtp->fh4_fsid, 3451 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3452 cs->exi = ((exi != NULL) ? exi : exi_public); 3453 } else { 3454 /* 3455 * it's a properly shared filesystem 3456 */ 3457 cs->exi = exi_public; 3458 } 3459 3460 if (is_system_labeled()) { 3461 bslabel_t *clabel; 3462 3463 ASSERT(req->rq_label != NULL); 3464 clabel = req->rq_label; 3465 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3466 "got client label from request(1)", 3467 struct svc_req *, req); 3468 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3469 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3470 cs->exi)) { 3471 *cs->statusp = resp->status = 3472 NFS4ERR_SERVERFAULT; 3473 goto out; 3474 } 3475 } 3476 } 3477 3478 VN_HOLD(vp); 3479 cs->vp = vp; 3480 3481 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3482 VN_RELE(cs->vp); 3483 cs->vp = NULL; 3484 cs->exi = sav_exi; 3485 goto out; 3486 } 3487 3488 *cs->statusp = resp->status = NFS4_OK; 3489 out: 3490 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3491 PUTPUBFH4res *, resp); 3492 } 3493 3494 /* 3495 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3496 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3497 * or joe have restrictive search permissions, then we shouldn't let 3498 * the client get a file handle. This is easy to enforce. However, we 3499 * don't know what security flavor should be used until we resolve the 3500 * path name. Another complication is uid mapping. If root is 3501 * the user, then it will be mapped to the anonymous user by default, 3502 * but we won't know that till we've resolved the path name. And we won't 3503 * know what the anonymous user is. 3504 * Luckily, SECINFO is specified to take a full filename. 3505 * So what we will have to in rfs4_op_lookup is check that flavor of 3506 * the target object matches that of the request, and if root was the 3507 * caller, check for the root= and anon= options, and if necessary, 3508 * repeat the lookup using the right cred_t. But that's not done yet. 3509 */ 3510 /* ARGSUSED */ 3511 static void 3512 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3513 struct compound_state *cs) 3514 { 3515 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3516 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3517 nfs_fh4_fmt_t *fh_fmtp; 3518 3519 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3520 PUTFH4args *, args); 3521 3522 if (cs->vp) { 3523 VN_RELE(cs->vp); 3524 cs->vp = NULL; 3525 } 3526 3527 if (cs->cr) { 3528 crfree(cs->cr); 3529 cs->cr = NULL; 3530 } 3531 3532 3533 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3534 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3535 goto out; 3536 } 3537 3538 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3539 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3540 NULL); 3541 3542 if (cs->exi == NULL) { 3543 *cs->statusp = resp->status = NFS4ERR_STALE; 3544 goto out; 3545 } 3546 3547 cs->cr = crdup(cs->basecr); 3548 3549 ASSERT(cs->cr != NULL); 3550 3551 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3552 *cs->statusp = resp->status; 3553 goto out; 3554 } 3555 3556 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3557 VN_RELE(cs->vp); 3558 cs->vp = NULL; 3559 goto out; 3560 } 3561 3562 nfs_fh4_copy(&args->object, &cs->fh); 3563 *cs->statusp = resp->status = NFS4_OK; 3564 cs->deleg = FALSE; 3565 3566 out: 3567 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3568 PUTFH4res *, resp); 3569 } 3570 3571 /* ARGSUSED */ 3572 static void 3573 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3574 struct compound_state *cs) 3575 { 3576 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3577 int error; 3578 fid_t fid; 3579 struct exportinfo *exi, *sav_exi; 3580 3581 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3582 3583 if (cs->vp) { 3584 VN_RELE(cs->vp); 3585 cs->vp = NULL; 3586 } 3587 3588 if (cs->cr) 3589 crfree(cs->cr); 3590 3591 cs->cr = crdup(cs->basecr); 3592 3593 /* 3594 * Using rootdir, the system root vnode, 3595 * get its fid. 3596 */ 3597 bzero(&fid, sizeof (fid)); 3598 fid.fid_len = MAXFIDSZ; 3599 error = vop_fid_pseudo(rootdir, &fid); 3600 if (error != 0) { 3601 *cs->statusp = resp->status = puterrno4(error); 3602 goto out; 3603 } 3604 3605 /* 3606 * Then use the root fsid & fid it to find out if it's exported 3607 * 3608 * If the server root isn't exported directly, then 3609 * it should at least be a pseudo export based on 3610 * one or more exports further down in the server's 3611 * file tree. 3612 */ 3613 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3614 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3615 NFS4_DEBUG(rfs4_debug, 3616 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3617 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3618 goto out; 3619 } 3620 3621 /* 3622 * Now make a filehandle based on the root 3623 * export and root vnode. 3624 */ 3625 error = makefh4(&cs->fh, rootdir, exi); 3626 if (error != 0) { 3627 *cs->statusp = resp->status = puterrno4(error); 3628 goto out; 3629 } 3630 3631 sav_exi = cs->exi; 3632 cs->exi = exi; 3633 3634 VN_HOLD(rootdir); 3635 cs->vp = rootdir; 3636 3637 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3638 VN_RELE(rootdir); 3639 cs->vp = NULL; 3640 cs->exi = sav_exi; 3641 goto out; 3642 } 3643 3644 *cs->statusp = resp->status = NFS4_OK; 3645 cs->deleg = FALSE; 3646 out: 3647 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3648 PUTROOTFH4res *, resp); 3649 } 3650 3651 /* 3652 * set_rdattr_params sets up the variables used to manage what information 3653 * to get for each directory entry. 3654 */ 3655 static nfsstat4 3656 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3657 bitmap4 attrs, bool_t *need_to_lookup) 3658 { 3659 uint_t va_mask; 3660 nfsstat4 status; 3661 bitmap4 objbits; 3662 3663 status = bitmap4_to_attrmask(attrs, sargp); 3664 if (status != NFS4_OK) { 3665 /* 3666 * could not even figure attr mask 3667 */ 3668 return (status); 3669 } 3670 va_mask = sargp->vap->va_mask; 3671 3672 /* 3673 * dirent's d_ino is always correct value for mounted_on_fileid. 3674 * mntdfid_set is set once here, but mounted_on_fileid is 3675 * set in main dirent processing loop for each dirent. 3676 * The mntdfid_set is a simple optimization that lets the 3677 * server attr code avoid work when caller is readdir. 3678 */ 3679 sargp->mntdfid_set = TRUE; 3680 3681 /* 3682 * Lookup entry only if client asked for any of the following: 3683 * a) vattr attrs 3684 * b) vfs attrs 3685 * c) attrs w/per-object scope requested (change, filehandle, etc) 3686 * other than mounted_on_fileid (which we can take from dirent) 3687 */ 3688 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3689 3690 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3691 *need_to_lookup = TRUE; 3692 else 3693 *need_to_lookup = FALSE; 3694 3695 if (sargp->sbp == NULL) 3696 return (NFS4_OK); 3697 3698 /* 3699 * If filesystem attrs are requested, get them now from the 3700 * directory vp, as most entries will have same filesystem. The only 3701 * exception are mounted over entries but we handle 3702 * those as we go (XXX mounted over detection not yet implemented). 3703 */ 3704 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3705 status = bitmap4_get_sysattrs(sargp); 3706 sargp->vap->va_mask = va_mask; 3707 3708 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3709 /* 3710 * Failed to get filesystem attributes. 3711 * Return a rdattr_error for each entry, but don't fail. 3712 * However, don't get any obj-dependent attrs. 3713 */ 3714 sargp->rdattr_error = status; /* for rdattr_error */ 3715 *need_to_lookup = FALSE; 3716 /* 3717 * At least get fileid for regular readdir output 3718 */ 3719 sargp->vap->va_mask &= AT_NODEID; 3720 status = NFS4_OK; 3721 } 3722 3723 return (status); 3724 } 3725 3726 /* 3727 * readlink: args: CURRENT_FH. 3728 * res: status. If success - CURRENT_FH unchanged, return linktext. 3729 */ 3730 3731 /* ARGSUSED */ 3732 static void 3733 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3734 struct compound_state *cs) 3735 { 3736 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3737 int error; 3738 vnode_t *vp; 3739 struct iovec iov; 3740 struct vattr va; 3741 struct uio uio; 3742 char *data; 3743 struct sockaddr *ca; 3744 char *name = NULL; 3745 int is_referral; 3746 3747 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3748 3749 /* CURRENT_FH: directory */ 3750 vp = cs->vp; 3751 if (vp == NULL) { 3752 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3753 goto out; 3754 } 3755 3756 if (cs->access == CS_ACCESS_DENIED) { 3757 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3758 goto out; 3759 } 3760 3761 /* Is it a referral? */ 3762 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3763 3764 is_referral = 1; 3765 3766 } else { 3767 3768 is_referral = 0; 3769 3770 if (vp->v_type == VDIR) { 3771 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3772 goto out; 3773 } 3774 3775 if (vp->v_type != VLNK) { 3776 *cs->statusp = resp->status = NFS4ERR_INVAL; 3777 goto out; 3778 } 3779 3780 } 3781 3782 va.va_mask = AT_MODE; 3783 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3784 if (error) { 3785 *cs->statusp = resp->status = puterrno4(error); 3786 goto out; 3787 } 3788 3789 if (MANDLOCK(vp, va.va_mode)) { 3790 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3791 goto out; 3792 } 3793 3794 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3795 3796 if (is_referral) { 3797 char *s; 3798 size_t strsz; 3799 3800 /* Get an artificial symlink based on a referral */ 3801 s = build_symlink(vp, cs->cr, &strsz); 3802 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3803 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3804 vnode_t *, vp, char *, s); 3805 if (s == NULL) 3806 error = EINVAL; 3807 else { 3808 error = 0; 3809 (void) strlcpy(data, s, MAXPATHLEN + 1); 3810 kmem_free(s, strsz); 3811 } 3812 3813 } else { 3814 3815 iov.iov_base = data; 3816 iov.iov_len = MAXPATHLEN; 3817 uio.uio_iov = &iov; 3818 uio.uio_iovcnt = 1; 3819 uio.uio_segflg = UIO_SYSSPACE; 3820 uio.uio_extflg = UIO_COPY_CACHED; 3821 uio.uio_loffset = 0; 3822 uio.uio_resid = MAXPATHLEN; 3823 3824 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3825 3826 if (!error) 3827 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3828 } 3829 3830 if (error) { 3831 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3832 *cs->statusp = resp->status = puterrno4(error); 3833 goto out; 3834 } 3835 3836 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3837 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3838 MAXPATHLEN + 1); 3839 3840 if (name == NULL) { 3841 /* 3842 * Even though the conversion failed, we return 3843 * something. We just don't translate it. 3844 */ 3845 name = data; 3846 } 3847 3848 /* 3849 * treat link name as data 3850 */ 3851 (void) str_to_utf8(name, (utf8string *)&resp->link); 3852 3853 if (name != data) 3854 kmem_free(name, MAXPATHLEN + 1); 3855 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3856 *cs->statusp = resp->status = NFS4_OK; 3857 3858 out: 3859 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3860 READLINK4res *, resp); 3861 } 3862 3863 static void 3864 rfs4_op_readlink_free(nfs_resop4 *resop) 3865 { 3866 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3867 utf8string *symlink = (utf8string *)&resp->link; 3868 3869 if (symlink->utf8string_val) { 3870 UTF8STRING_FREE(*symlink) 3871 } 3872 } 3873 3874 /* 3875 * release_lockowner: 3876 * Release any state associated with the supplied 3877 * lockowner. Note if any lo_state is holding locks we will not 3878 * rele that lo_state and thus the lockowner will not be destroyed. 3879 * A client using lock after the lock owner stateid has been released 3880 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3881 * to reissue the lock with new_lock_owner set to TRUE. 3882 * args: lock_owner 3883 * res: status 3884 */ 3885 /* ARGSUSED */ 3886 static void 3887 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3888 struct svc_req *req, struct compound_state *cs) 3889 { 3890 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3891 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3892 rfs4_lockowner_t *lo; 3893 rfs4_openowner_t *oo; 3894 rfs4_state_t *sp; 3895 rfs4_lo_state_t *lsp; 3896 rfs4_client_t *cp; 3897 bool_t create = FALSE; 3898 locklist_t *llist; 3899 sysid_t sysid; 3900 3901 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3902 cs, RELEASE_LOCKOWNER4args *, ap); 3903 3904 /* Make sure there is a clientid around for this request */ 3905 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3906 3907 if (cp == NULL) { 3908 *cs->statusp = resp->status = 3909 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3910 goto out; 3911 } 3912 rfs4_client_rele(cp); 3913 3914 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3915 if (lo == NULL) { 3916 *cs->statusp = resp->status = NFS4_OK; 3917 goto out; 3918 } 3919 ASSERT(lo->rl_client != NULL); 3920 3921 /* 3922 * Check for EXPIRED client. If so will reap state with in a lease 3923 * period or on next set_clientid_confirm step 3924 */ 3925 if (rfs4_lease_expired(lo->rl_client)) { 3926 rfs4_lockowner_rele(lo); 3927 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3928 goto out; 3929 } 3930 3931 /* 3932 * If no sysid has been assigned, then no locks exist; just return. 3933 */ 3934 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3935 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3936 rfs4_lockowner_rele(lo); 3937 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3938 goto out; 3939 } 3940 3941 sysid = lo->rl_client->rc_sysidt; 3942 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3943 3944 /* 3945 * Mark the lockowner invalid. 3946 */ 3947 rfs4_dbe_hide(lo->rl_dbe); 3948 3949 /* 3950 * sysid-pid pair should now not be used since the lockowner is 3951 * invalid. If the client were to instantiate the lockowner again 3952 * it would be assigned a new pid. Thus we can get the list of 3953 * current locks. 3954 */ 3955 3956 llist = flk_get_active_locks(sysid, lo->rl_pid); 3957 /* If we are still holding locks fail */ 3958 if (llist != NULL) { 3959 3960 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3961 3962 flk_free_locklist(llist); 3963 /* 3964 * We need to unhide the lockowner so the client can 3965 * try it again. The bad thing here is if the client 3966 * has a logic error that took it here in the first place 3967 * they probably have lost accounting of the locks that it 3968 * is holding. So we may have dangling state until the 3969 * open owner state is reaped via close. One scenario 3970 * that could possibly occur is that the client has 3971 * sent the unlock request(s) in separate threads 3972 * and has not waited for the replies before sending the 3973 * RELEASE_LOCKOWNER request. Presumably, it would expect 3974 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3975 * reissuing the request. 3976 */ 3977 rfs4_dbe_unhide(lo->rl_dbe); 3978 rfs4_lockowner_rele(lo); 3979 goto out; 3980 } 3981 3982 /* 3983 * For the corresponding client we need to check each open 3984 * owner for any opens that have lockowner state associated 3985 * with this lockowner. 3986 */ 3987 3988 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3989 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 3990 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 3991 3992 rfs4_dbe_lock(oo->ro_dbe); 3993 for (sp = list_head(&oo->ro_statelist); sp != NULL; 3994 sp = list_next(&oo->ro_statelist, sp)) { 3995 3996 rfs4_dbe_lock(sp->rs_dbe); 3997 for (lsp = list_head(&sp->rs_lostatelist); 3998 lsp != NULL; 3999 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4000 if (lsp->rls_locker == lo) { 4001 rfs4_dbe_lock(lsp->rls_dbe); 4002 rfs4_dbe_invalidate(lsp->rls_dbe); 4003 rfs4_dbe_unlock(lsp->rls_dbe); 4004 } 4005 } 4006 rfs4_dbe_unlock(sp->rs_dbe); 4007 } 4008 rfs4_dbe_unlock(oo->ro_dbe); 4009 } 4010 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4011 4012 rfs4_lockowner_rele(lo); 4013 4014 *cs->statusp = resp->status = NFS4_OK; 4015 4016 out: 4017 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4018 cs, RELEASE_LOCKOWNER4res *, resp); 4019 } 4020 4021 /* 4022 * short utility function to lookup a file and recall the delegation 4023 */ 4024 static rfs4_file_t * 4025 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4026 int *lkup_error, cred_t *cr) 4027 { 4028 vnode_t *vp; 4029 rfs4_file_t *fp = NULL; 4030 bool_t fcreate = FALSE; 4031 int error; 4032 4033 if (vpp) 4034 *vpp = NULL; 4035 4036 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4037 NULL)) == 0) { 4038 if (vp->v_type == VREG) 4039 fp = rfs4_findfile(vp, NULL, &fcreate); 4040 if (vpp) 4041 *vpp = vp; 4042 else 4043 VN_RELE(vp); 4044 } 4045 4046 if (lkup_error) 4047 *lkup_error = error; 4048 4049 return (fp); 4050 } 4051 4052 /* 4053 * remove: args: CURRENT_FH: directory; name. 4054 * res: status. If success - CURRENT_FH unchanged, return change_info 4055 * for directory. 4056 */ 4057 /* ARGSUSED */ 4058 static void 4059 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4060 struct compound_state *cs) 4061 { 4062 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4063 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4064 int error; 4065 vnode_t *dvp, *vp; 4066 struct vattr bdva, idva, adva; 4067 char *nm; 4068 uint_t len; 4069 rfs4_file_t *fp; 4070 int in_crit = 0; 4071 bslabel_t *clabel; 4072 struct sockaddr *ca; 4073 char *name = NULL; 4074 nfsstat4 status; 4075 4076 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4077 REMOVE4args *, args); 4078 4079 /* CURRENT_FH: directory */ 4080 dvp = cs->vp; 4081 if (dvp == NULL) { 4082 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4083 goto out; 4084 } 4085 4086 if (cs->access == CS_ACCESS_DENIED) { 4087 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4088 goto out; 4089 } 4090 4091 /* 4092 * If there is an unshared filesystem mounted on this vnode, 4093 * Do not allow to remove anything in this directory. 4094 */ 4095 if (vn_ismntpt(dvp)) { 4096 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4097 goto out; 4098 } 4099 4100 if (dvp->v_type != VDIR) { 4101 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4102 goto out; 4103 } 4104 4105 status = utf8_dir_verify(&args->target); 4106 if (status != NFS4_OK) { 4107 *cs->statusp = resp->status = status; 4108 goto out; 4109 } 4110 4111 /* 4112 * Lookup the file so that we can check if it's a directory 4113 */ 4114 nm = utf8_to_fn(&args->target, &len, NULL); 4115 if (nm == NULL) { 4116 *cs->statusp = resp->status = NFS4ERR_INVAL; 4117 goto out; 4118 } 4119 4120 if (len > MAXNAMELEN) { 4121 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4122 kmem_free(nm, len); 4123 goto out; 4124 } 4125 4126 if (rdonly4(req, cs)) { 4127 *cs->statusp = resp->status = NFS4ERR_ROFS; 4128 kmem_free(nm, len); 4129 goto out; 4130 } 4131 4132 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4133 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4134 MAXPATHLEN + 1); 4135 4136 if (name == NULL) { 4137 *cs->statusp = resp->status = NFS4ERR_INVAL; 4138 kmem_free(nm, len); 4139 goto out; 4140 } 4141 4142 /* 4143 * Lookup the file to determine type and while we are see if 4144 * there is a file struct around and check for delegation. 4145 * We don't need to acquire va_seq before this lookup, if 4146 * it causes an update, cinfo.before will not match, which will 4147 * trigger a cache flush even if atomic is TRUE. 4148 */ 4149 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4150 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4151 NULL)) { 4152 VN_RELE(vp); 4153 rfs4_file_rele(fp); 4154 *cs->statusp = resp->status = NFS4ERR_DELAY; 4155 if (nm != name) 4156 kmem_free(name, MAXPATHLEN + 1); 4157 kmem_free(nm, len); 4158 goto out; 4159 } 4160 } 4161 4162 /* Didn't find anything to remove */ 4163 if (vp == NULL) { 4164 *cs->statusp = resp->status = error; 4165 if (nm != name) 4166 kmem_free(name, MAXPATHLEN + 1); 4167 kmem_free(nm, len); 4168 goto out; 4169 } 4170 4171 if (nbl_need_check(vp)) { 4172 nbl_start_crit(vp, RW_READER); 4173 in_crit = 1; 4174 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4175 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4176 if (nm != name) 4177 kmem_free(name, MAXPATHLEN + 1); 4178 kmem_free(nm, len); 4179 nbl_end_crit(vp); 4180 VN_RELE(vp); 4181 if (fp) { 4182 rfs4_clear_dont_grant(fp); 4183 rfs4_file_rele(fp); 4184 } 4185 goto out; 4186 } 4187 } 4188 4189 /* check label before allowing removal */ 4190 if (is_system_labeled()) { 4191 ASSERT(req->rq_label != NULL); 4192 clabel = req->rq_label; 4193 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4194 "got client label from request(1)", 4195 struct svc_req *, req); 4196 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4197 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4198 cs->exi)) { 4199 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4200 if (name != nm) 4201 kmem_free(name, MAXPATHLEN + 1); 4202 kmem_free(nm, len); 4203 if (in_crit) 4204 nbl_end_crit(vp); 4205 VN_RELE(vp); 4206 if (fp) { 4207 rfs4_clear_dont_grant(fp); 4208 rfs4_file_rele(fp); 4209 } 4210 goto out; 4211 } 4212 } 4213 } 4214 4215 /* Get dir "before" change value */ 4216 bdva.va_mask = AT_CTIME|AT_SEQ; 4217 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4218 if (error) { 4219 *cs->statusp = resp->status = puterrno4(error); 4220 if (nm != name) 4221 kmem_free(name, MAXPATHLEN + 1); 4222 kmem_free(nm, len); 4223 if (in_crit) 4224 nbl_end_crit(vp); 4225 VN_RELE(vp); 4226 if (fp) { 4227 rfs4_clear_dont_grant(fp); 4228 rfs4_file_rele(fp); 4229 } 4230 goto out; 4231 } 4232 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4233 4234 /* Actually do the REMOVE operation */ 4235 if (vp->v_type == VDIR) { 4236 /* 4237 * Can't remove a directory that has a mounted-on filesystem. 4238 */ 4239 if (vn_ismntpt(vp)) { 4240 error = EACCES; 4241 } else { 4242 /* 4243 * System V defines rmdir to return EEXIST, 4244 * not ENOTEMPTY, if the directory is not 4245 * empty. A System V NFS server needs to map 4246 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4247 * transmit over the wire. 4248 */ 4249 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4250 NULL, 0)) == EEXIST) 4251 error = ENOTEMPTY; 4252 } 4253 } else { 4254 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4255 fp != NULL) { 4256 struct vattr va; 4257 vnode_t *tvp; 4258 4259 rfs4_dbe_lock(fp->rf_dbe); 4260 tvp = fp->rf_vp; 4261 if (tvp) 4262 VN_HOLD(tvp); 4263 rfs4_dbe_unlock(fp->rf_dbe); 4264 4265 if (tvp) { 4266 /* 4267 * This is va_seq safe because we are not 4268 * manipulating dvp. 4269 */ 4270 va.va_mask = AT_NLINK; 4271 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4272 va.va_nlink == 0) { 4273 /* Remove state on file remove */ 4274 if (in_crit) { 4275 nbl_end_crit(vp); 4276 in_crit = 0; 4277 } 4278 rfs4_close_all_state(fp); 4279 } 4280 VN_RELE(tvp); 4281 } 4282 } 4283 } 4284 4285 if (in_crit) 4286 nbl_end_crit(vp); 4287 VN_RELE(vp); 4288 4289 if (fp) { 4290 rfs4_clear_dont_grant(fp); 4291 rfs4_file_rele(fp); 4292 } 4293 if (nm != name) 4294 kmem_free(name, MAXPATHLEN + 1); 4295 kmem_free(nm, len); 4296 4297 if (error) { 4298 *cs->statusp = resp->status = puterrno4(error); 4299 goto out; 4300 } 4301 4302 /* 4303 * Get the initial "after" sequence number, if it fails, set to zero 4304 */ 4305 idva.va_mask = AT_SEQ; 4306 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4307 idva.va_seq = 0; 4308 4309 /* 4310 * Force modified data and metadata out to stable storage. 4311 */ 4312 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4313 4314 /* 4315 * Get "after" change value, if it fails, simply return the 4316 * before value. 4317 */ 4318 adva.va_mask = AT_CTIME|AT_SEQ; 4319 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4320 adva.va_ctime = bdva.va_ctime; 4321 adva.va_seq = 0; 4322 } 4323 4324 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4325 4326 /* 4327 * The cinfo.atomic = TRUE only if we have 4328 * non-zero va_seq's, and it has incremented by exactly one 4329 * during the VOP_REMOVE/RMDIR and it didn't change during 4330 * the VOP_FSYNC. 4331 */ 4332 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4333 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4334 resp->cinfo.atomic = TRUE; 4335 else 4336 resp->cinfo.atomic = FALSE; 4337 4338 *cs->statusp = resp->status = NFS4_OK; 4339 4340 out: 4341 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4342 REMOVE4res *, resp); 4343 } 4344 4345 /* 4346 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4347 * oldname and newname. 4348 * res: status. If success - CURRENT_FH unchanged, return change_info 4349 * for both from and target directories. 4350 */ 4351 /* ARGSUSED */ 4352 static void 4353 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4354 struct compound_state *cs) 4355 { 4356 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4357 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4358 int error; 4359 vnode_t *odvp; 4360 vnode_t *ndvp; 4361 vnode_t *srcvp, *targvp; 4362 struct vattr obdva, oidva, oadva; 4363 struct vattr nbdva, nidva, nadva; 4364 char *onm, *nnm; 4365 uint_t olen, nlen; 4366 rfs4_file_t *fp, *sfp; 4367 int in_crit_src, in_crit_targ; 4368 int fp_rele_grant_hold, sfp_rele_grant_hold; 4369 bslabel_t *clabel; 4370 struct sockaddr *ca; 4371 char *converted_onm = NULL; 4372 char *converted_nnm = NULL; 4373 nfsstat4 status; 4374 4375 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4376 RENAME4args *, args); 4377 4378 fp = sfp = NULL; 4379 srcvp = targvp = NULL; 4380 in_crit_src = in_crit_targ = 0; 4381 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4382 4383 /* CURRENT_FH: target directory */ 4384 ndvp = cs->vp; 4385 if (ndvp == NULL) { 4386 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4387 goto out; 4388 } 4389 4390 /* SAVED_FH: from directory */ 4391 odvp = cs->saved_vp; 4392 if (odvp == NULL) { 4393 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4394 goto out; 4395 } 4396 4397 if (cs->access == CS_ACCESS_DENIED) { 4398 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4399 goto out; 4400 } 4401 4402 /* 4403 * If there is an unshared filesystem mounted on this vnode, 4404 * do not allow to rename objects in this directory. 4405 */ 4406 if (vn_ismntpt(odvp)) { 4407 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4408 goto out; 4409 } 4410 4411 /* 4412 * If there is an unshared filesystem mounted on this vnode, 4413 * do not allow to rename to this directory. 4414 */ 4415 if (vn_ismntpt(ndvp)) { 4416 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4417 goto out; 4418 } 4419 4420 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4421 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4422 goto out; 4423 } 4424 4425 if (cs->saved_exi != cs->exi) { 4426 *cs->statusp = resp->status = NFS4ERR_XDEV; 4427 goto out; 4428 } 4429 4430 status = utf8_dir_verify(&args->oldname); 4431 if (status != NFS4_OK) { 4432 *cs->statusp = resp->status = status; 4433 goto out; 4434 } 4435 4436 status = utf8_dir_verify(&args->newname); 4437 if (status != NFS4_OK) { 4438 *cs->statusp = resp->status = status; 4439 goto out; 4440 } 4441 4442 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4443 if (onm == NULL) { 4444 *cs->statusp = resp->status = NFS4ERR_INVAL; 4445 goto out; 4446 } 4447 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4448 nlen = MAXPATHLEN + 1; 4449 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4450 nlen); 4451 4452 if (converted_onm == NULL) { 4453 *cs->statusp = resp->status = NFS4ERR_INVAL; 4454 kmem_free(onm, olen); 4455 goto out; 4456 } 4457 4458 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4459 if (nnm == NULL) { 4460 *cs->statusp = resp->status = NFS4ERR_INVAL; 4461 if (onm != converted_onm) 4462 kmem_free(converted_onm, MAXPATHLEN + 1); 4463 kmem_free(onm, olen); 4464 goto out; 4465 } 4466 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4467 MAXPATHLEN + 1); 4468 4469 if (converted_nnm == NULL) { 4470 *cs->statusp = resp->status = NFS4ERR_INVAL; 4471 kmem_free(nnm, nlen); 4472 nnm = NULL; 4473 if (onm != converted_onm) 4474 kmem_free(converted_onm, MAXPATHLEN + 1); 4475 kmem_free(onm, olen); 4476 goto out; 4477 } 4478 4479 4480 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4481 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4482 kmem_free(onm, olen); 4483 kmem_free(nnm, nlen); 4484 goto out; 4485 } 4486 4487 4488 if (rdonly4(req, cs)) { 4489 *cs->statusp = resp->status = NFS4ERR_ROFS; 4490 if (onm != converted_onm) 4491 kmem_free(converted_onm, MAXPATHLEN + 1); 4492 kmem_free(onm, olen); 4493 if (nnm != converted_nnm) 4494 kmem_free(converted_nnm, MAXPATHLEN + 1); 4495 kmem_free(nnm, nlen); 4496 goto out; 4497 } 4498 4499 /* check label of the target dir */ 4500 if (is_system_labeled()) { 4501 ASSERT(req->rq_label != NULL); 4502 clabel = req->rq_label; 4503 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4504 "got client label from request(1)", 4505 struct svc_req *, req); 4506 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4507 if (!do_rfs_label_check(clabel, ndvp, 4508 EQUALITY_CHECK, cs->exi)) { 4509 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4510 goto err_out; 4511 } 4512 } 4513 } 4514 4515 /* 4516 * Is the source a file and have a delegation? 4517 * We don't need to acquire va_seq before these lookups, if 4518 * it causes an update, cinfo.before will not match, which will 4519 * trigger a cache flush even if atomic is TRUE. 4520 */ 4521 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4522 &error, cs->cr)) { 4523 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4524 NULL)) { 4525 *cs->statusp = resp->status = NFS4ERR_DELAY; 4526 goto err_out; 4527 } 4528 } 4529 4530 if (srcvp == NULL) { 4531 *cs->statusp = resp->status = puterrno4(error); 4532 if (onm != converted_onm) 4533 kmem_free(converted_onm, MAXPATHLEN + 1); 4534 kmem_free(onm, olen); 4535 if (nnm != converted_nnm) 4536 kmem_free(converted_nnm, MAXPATHLEN + 1); 4537 kmem_free(nnm, nlen); 4538 goto out; 4539 } 4540 4541 sfp_rele_grant_hold = 1; 4542 4543 /* Does the destination exist and a file and have a delegation? */ 4544 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4545 NULL, cs->cr)) { 4546 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4547 NULL)) { 4548 *cs->statusp = resp->status = NFS4ERR_DELAY; 4549 goto err_out; 4550 } 4551 } 4552 fp_rele_grant_hold = 1; 4553 4554 4555 /* Check for NBMAND lock on both source and target */ 4556 if (nbl_need_check(srcvp)) { 4557 nbl_start_crit(srcvp, RW_READER); 4558 in_crit_src = 1; 4559 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4560 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4561 goto err_out; 4562 } 4563 } 4564 4565 if (targvp && nbl_need_check(targvp)) { 4566 nbl_start_crit(targvp, RW_READER); 4567 in_crit_targ = 1; 4568 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4569 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4570 goto err_out; 4571 } 4572 } 4573 4574 /* Get source "before" change value */ 4575 obdva.va_mask = AT_CTIME|AT_SEQ; 4576 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4577 if (!error) { 4578 nbdva.va_mask = AT_CTIME|AT_SEQ; 4579 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4580 } 4581 if (error) { 4582 *cs->statusp = resp->status = puterrno4(error); 4583 goto err_out; 4584 } 4585 4586 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4587 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4588 4589 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4590 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4591 struct vattr va; 4592 vnode_t *tvp; 4593 4594 rfs4_dbe_lock(fp->rf_dbe); 4595 tvp = fp->rf_vp; 4596 if (tvp) 4597 VN_HOLD(tvp); 4598 rfs4_dbe_unlock(fp->rf_dbe); 4599 4600 if (tvp) { 4601 va.va_mask = AT_NLINK; 4602 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4603 va.va_nlink == 0) { 4604 /* The file is gone and so should the state */ 4605 if (in_crit_targ) { 4606 nbl_end_crit(targvp); 4607 in_crit_targ = 0; 4608 } 4609 rfs4_close_all_state(fp); 4610 } 4611 VN_RELE(tvp); 4612 } 4613 } 4614 if (error == 0) 4615 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4616 4617 if (in_crit_src) 4618 nbl_end_crit(srcvp); 4619 if (srcvp) 4620 VN_RELE(srcvp); 4621 if (in_crit_targ) 4622 nbl_end_crit(targvp); 4623 if (targvp) 4624 VN_RELE(targvp); 4625 4626 if (sfp) { 4627 rfs4_clear_dont_grant(sfp); 4628 rfs4_file_rele(sfp); 4629 } 4630 if (fp) { 4631 rfs4_clear_dont_grant(fp); 4632 rfs4_file_rele(fp); 4633 } 4634 4635 if (converted_onm != onm) 4636 kmem_free(converted_onm, MAXPATHLEN + 1); 4637 kmem_free(onm, olen); 4638 if (converted_nnm != nnm) 4639 kmem_free(converted_nnm, MAXPATHLEN + 1); 4640 kmem_free(nnm, nlen); 4641 4642 /* 4643 * Get the initial "after" sequence number, if it fails, set to zero 4644 */ 4645 oidva.va_mask = AT_SEQ; 4646 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4647 oidva.va_seq = 0; 4648 4649 nidva.va_mask = AT_SEQ; 4650 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4651 nidva.va_seq = 0; 4652 4653 /* 4654 * Force modified data and metadata out to stable storage. 4655 */ 4656 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4657 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4658 4659 if (error) { 4660 *cs->statusp = resp->status = puterrno4(error); 4661 goto out; 4662 } 4663 4664 /* 4665 * Get "after" change values, if it fails, simply return the 4666 * before value. 4667 */ 4668 oadva.va_mask = AT_CTIME|AT_SEQ; 4669 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4670 oadva.va_ctime = obdva.va_ctime; 4671 oadva.va_seq = 0; 4672 } 4673 4674 nadva.va_mask = AT_CTIME|AT_SEQ; 4675 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4676 nadva.va_ctime = nbdva.va_ctime; 4677 nadva.va_seq = 0; 4678 } 4679 4680 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4681 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4682 4683 /* 4684 * The cinfo.atomic = TRUE only if we have 4685 * non-zero va_seq's, and it has incremented by exactly one 4686 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4687 */ 4688 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4689 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4690 resp->source_cinfo.atomic = TRUE; 4691 else 4692 resp->source_cinfo.atomic = FALSE; 4693 4694 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4695 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4696 resp->target_cinfo.atomic = TRUE; 4697 else 4698 resp->target_cinfo.atomic = FALSE; 4699 4700 #ifdef VOLATILE_FH_TEST 4701 { 4702 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4703 4704 /* 4705 * Add the renamed file handle to the volatile rename list 4706 */ 4707 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4708 /* file handles may expire on rename */ 4709 vnode_t *vp; 4710 4711 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4712 /* 4713 * Already know that nnm will be a valid string 4714 */ 4715 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4716 NULL, NULL, NULL); 4717 kmem_free(nnm, nlen); 4718 if (!error) { 4719 add_volrnm_fh(cs->exi, vp); 4720 VN_RELE(vp); 4721 } 4722 } 4723 } 4724 #endif /* VOLATILE_FH_TEST */ 4725 4726 *cs->statusp = resp->status = NFS4_OK; 4727 out: 4728 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4729 RENAME4res *, resp); 4730 return; 4731 4732 err_out: 4733 if (onm != converted_onm) 4734 kmem_free(converted_onm, MAXPATHLEN + 1); 4735 if (onm != NULL) 4736 kmem_free(onm, olen); 4737 if (nnm != converted_nnm) 4738 kmem_free(converted_nnm, MAXPATHLEN + 1); 4739 if (nnm != NULL) 4740 kmem_free(nnm, nlen); 4741 4742 if (in_crit_src) nbl_end_crit(srcvp); 4743 if (in_crit_targ) nbl_end_crit(targvp); 4744 if (targvp) VN_RELE(targvp); 4745 if (srcvp) VN_RELE(srcvp); 4746 if (sfp) { 4747 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4748 rfs4_file_rele(sfp); 4749 } 4750 if (fp) { 4751 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4752 rfs4_file_rele(fp); 4753 } 4754 4755 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4756 RENAME4res *, resp); 4757 } 4758 4759 /* ARGSUSED */ 4760 static void 4761 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4762 struct compound_state *cs) 4763 { 4764 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4765 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4766 rfs4_client_t *cp; 4767 4768 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4769 RENEW4args *, args); 4770 4771 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4772 *cs->statusp = resp->status = 4773 rfs4_check_clientid(&args->clientid, 0); 4774 goto out; 4775 } 4776 4777 if (rfs4_lease_expired(cp)) { 4778 rfs4_client_rele(cp); 4779 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4780 goto out; 4781 } 4782 4783 rfs4_update_lease(cp); 4784 4785 mutex_enter(cp->rc_cbinfo.cb_lock); 4786 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4787 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4788 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4789 } else { 4790 *cs->statusp = resp->status = NFS4_OK; 4791 } 4792 mutex_exit(cp->rc_cbinfo.cb_lock); 4793 4794 rfs4_client_rele(cp); 4795 4796 out: 4797 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4798 RENEW4res *, resp); 4799 } 4800 4801 /* ARGSUSED */ 4802 static void 4803 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4804 struct compound_state *cs) 4805 { 4806 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4807 4808 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4809 4810 /* No need to check cs->access - we are not accessing any object */ 4811 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4812 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4813 goto out; 4814 } 4815 if (cs->vp != NULL) { 4816 VN_RELE(cs->vp); 4817 } 4818 cs->vp = cs->saved_vp; 4819 cs->saved_vp = NULL; 4820 cs->exi = cs->saved_exi; 4821 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4822 *cs->statusp = resp->status = NFS4_OK; 4823 cs->deleg = FALSE; 4824 4825 out: 4826 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4827 RESTOREFH4res *, resp); 4828 } 4829 4830 /* ARGSUSED */ 4831 static void 4832 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4833 struct compound_state *cs) 4834 { 4835 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4836 4837 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4838 4839 /* No need to check cs->access - we are not accessing any object */ 4840 if (cs->vp == NULL) { 4841 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4842 goto out; 4843 } 4844 if (cs->saved_vp != NULL) { 4845 VN_RELE(cs->saved_vp); 4846 } 4847 cs->saved_vp = cs->vp; 4848 VN_HOLD(cs->saved_vp); 4849 cs->saved_exi = cs->exi; 4850 /* 4851 * since SAVEFH is fairly rare, don't alloc space for its fh 4852 * unless necessary. 4853 */ 4854 if (cs->saved_fh.nfs_fh4_val == NULL) { 4855 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4856 } 4857 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4858 *cs->statusp = resp->status = NFS4_OK; 4859 4860 out: 4861 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4862 SAVEFH4res *, resp); 4863 } 4864 4865 /* 4866 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4867 * return the bitmap of attrs that were set successfully. It is also 4868 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4869 * always be called only after rfs4_do_set_attrs(). 4870 * 4871 * Verify that the attributes are same as the expected ones. sargp->vap 4872 * and sargp->sbp contain the input attributes as translated from fattr4. 4873 * 4874 * This function verifies only the attrs that correspond to a vattr or 4875 * vfsstat struct. That is because of the extra step needed to get the 4876 * corresponding system structs. Other attributes have already been set or 4877 * verified by do_rfs4_set_attrs. 4878 * 4879 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4880 */ 4881 static int 4882 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4883 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4884 { 4885 int error, ret_error = 0; 4886 int i, k; 4887 uint_t sva_mask = sargp->vap->va_mask; 4888 uint_t vbit; 4889 union nfs4_attr_u *na; 4890 uint8_t *amap; 4891 bool_t getsb = ntovp->vfsstat; 4892 4893 if (sva_mask != 0) { 4894 /* 4895 * Okay to overwrite sargp->vap because we verify based 4896 * on the incoming values. 4897 */ 4898 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4899 sargp->cs->cr, NULL); 4900 if (ret_error) { 4901 if (resp == NULL) 4902 return (ret_error); 4903 /* 4904 * Must return bitmap of successful attrs 4905 */ 4906 sva_mask = 0; /* to prevent checking vap later */ 4907 } else { 4908 /* 4909 * Some file systems clobber va_mask. it is probably 4910 * wrong of them to do so, nonethless we practice 4911 * defensive coding. 4912 * See bug id 4276830. 4913 */ 4914 sargp->vap->va_mask = sva_mask; 4915 } 4916 } 4917 4918 if (getsb) { 4919 /* 4920 * Now get the superblock and loop on the bitmap, as there is 4921 * no simple way of translating from superblock to bitmap4. 4922 */ 4923 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4924 if (ret_error) { 4925 if (resp == NULL) 4926 goto errout; 4927 getsb = FALSE; 4928 } 4929 } 4930 4931 /* 4932 * Now loop and verify each attribute which getattr returned 4933 * whether it's the same as the input. 4934 */ 4935 if (resp == NULL && !getsb && (sva_mask == 0)) 4936 goto errout; 4937 4938 na = ntovp->na; 4939 amap = ntovp->amap; 4940 k = 0; 4941 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4942 k = *amap; 4943 ASSERT(nfs4_ntov_map[k].nval == k); 4944 vbit = nfs4_ntov_map[k].vbit; 4945 4946 /* 4947 * If vattr attribute but VOP_GETATTR failed, or it's 4948 * superblock attribute but VFS_STATVFS failed, skip 4949 */ 4950 if (vbit) { 4951 if ((vbit & sva_mask) == 0) 4952 continue; 4953 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4954 continue; 4955 } 4956 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4957 if (resp != NULL) { 4958 if (error) 4959 ret_error = -1; /* not all match */ 4960 else /* update response bitmap */ 4961 *resp |= nfs4_ntov_map[k].fbit; 4962 continue; 4963 } 4964 if (error) { 4965 ret_error = -1; /* not all match */ 4966 break; 4967 } 4968 } 4969 errout: 4970 return (ret_error); 4971 } 4972 4973 /* 4974 * Decode the attribute to be set/verified. If the attr requires a sys op 4975 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4976 * call the sv_getit function for it, because the sys op hasn't yet been done. 4977 * Return 0 for success, error code if failed. 4978 * 4979 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4980 */ 4981 static int 4982 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4983 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4984 { 4985 int error = 0; 4986 bool_t set_later; 4987 4988 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4989 4990 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4991 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4992 /* 4993 * don't verify yet if a vattr or sb dependent attr, 4994 * because we don't have their sys values yet. 4995 * Will be done later. 4996 */ 4997 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4998 /* 4999 * ACLs are a special case, since setting the MODE 5000 * conflicts with setting the ACL. We delay setting 5001 * the ACL until all other attributes have been set. 5002 * The ACL gets set in do_rfs4_op_setattr(). 5003 */ 5004 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5005 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5006 sargp, nap); 5007 if (error) { 5008 xdr_free(nfs4_ntov_map[k].xfunc, 5009 (caddr_t)nap); 5010 } 5011 } 5012 } 5013 } else { 5014 #ifdef DEBUG 5015 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5016 "decoding attribute %d\n", k); 5017 #endif 5018 error = EINVAL; 5019 } 5020 if (!error && resp_bval && !set_later) { 5021 *resp_bval |= nfs4_ntov_map[k].fbit; 5022 } 5023 5024 return (error); 5025 } 5026 5027 /* 5028 * Set vattr based on incoming fattr4 attrs - used by setattr. 5029 * Set response mask. Ignore any values that are not writable vattr attrs. 5030 */ 5031 static nfsstat4 5032 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5033 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5034 nfs4_attr_cmd_t cmd) 5035 { 5036 int error = 0; 5037 int i; 5038 char *attrs = fattrp->attrlist4; 5039 uint32_t attrslen = fattrp->attrlist4_len; 5040 XDR xdr; 5041 nfsstat4 status = NFS4_OK; 5042 vnode_t *vp = cs->vp; 5043 union nfs4_attr_u *na; 5044 uint8_t *amap; 5045 5046 #ifndef lint 5047 /* 5048 * Make sure that maximum attribute number can be expressed as an 5049 * 8 bit quantity. 5050 */ 5051 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5052 #endif 5053 5054 if (vp == NULL) { 5055 if (resp) 5056 *resp = 0; 5057 return (NFS4ERR_NOFILEHANDLE); 5058 } 5059 if (cs->access == CS_ACCESS_DENIED) { 5060 if (resp) 5061 *resp = 0; 5062 return (NFS4ERR_ACCESS); 5063 } 5064 5065 sargp->op = cmd; 5066 sargp->cs = cs; 5067 sargp->flag = 0; /* may be set later */ 5068 sargp->vap->va_mask = 0; 5069 sargp->rdattr_error = NFS4_OK; 5070 sargp->rdattr_error_req = FALSE; 5071 /* sargp->sbp is set by the caller */ 5072 5073 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5074 5075 na = ntovp->na; 5076 amap = ntovp->amap; 5077 5078 /* 5079 * The following loop iterates on the nfs4_ntov_map checking 5080 * if the fbit is set in the requested bitmap. 5081 * If set then we process the arguments using the 5082 * rfs4_fattr4 conversion functions to populate the setattr 5083 * vattr and va_mask. Any settable attrs that are not using vattr 5084 * will be set in this loop. 5085 */ 5086 for (i = 0; i < nfs4_ntov_map_size; i++) { 5087 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5088 continue; 5089 } 5090 /* 5091 * If setattr, must be a writable attr. 5092 * If verify/nverify, must be a readable attr. 5093 */ 5094 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5095 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5096 /* 5097 * Client tries to set/verify an 5098 * unsupported attribute, tries to set 5099 * a read only attr or verify a write 5100 * only one - error! 5101 */ 5102 break; 5103 } 5104 /* 5105 * Decode the attribute to set/verify 5106 */ 5107 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5108 &xdr, resp ? resp : NULL, na); 5109 if (error) 5110 break; 5111 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5112 na++; 5113 (ntovp->attrcnt)++; 5114 if (nfs4_ntov_map[i].vfsstat) 5115 ntovp->vfsstat = TRUE; 5116 } 5117 5118 if (error != 0) 5119 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5120 puterrno4(error)); 5121 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5122 return (status); 5123 } 5124 5125 static nfsstat4 5126 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5127 stateid4 *stateid) 5128 { 5129 int error = 0; 5130 struct nfs4_svgetit_arg sarg; 5131 bool_t trunc; 5132 5133 nfsstat4 status = NFS4_OK; 5134 cred_t *cr = cs->cr; 5135 vnode_t *vp = cs->vp; 5136 struct nfs4_ntov_table ntov; 5137 struct statvfs64 sb; 5138 struct vattr bva; 5139 struct flock64 bf; 5140 int in_crit = 0; 5141 uint_t saved_mask = 0; 5142 caller_context_t ct; 5143 5144 *resp = 0; 5145 sarg.sbp = &sb; 5146 sarg.is_referral = B_FALSE; 5147 nfs4_ntov_table_init(&ntov); 5148 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5149 NFS4ATTR_SETIT); 5150 if (status != NFS4_OK) { 5151 /* 5152 * failed set attrs 5153 */ 5154 goto done; 5155 } 5156 if ((sarg.vap->va_mask == 0) && 5157 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5158 /* 5159 * no further work to be done 5160 */ 5161 goto done; 5162 } 5163 5164 /* 5165 * If we got a request to set the ACL and the MODE, only 5166 * allow changing VSUID, VSGID, and VSVTX. Attempting 5167 * to change any other bits, along with setting an ACL, 5168 * gives NFS4ERR_INVAL. 5169 */ 5170 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5171 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5172 vattr_t va; 5173 5174 va.va_mask = AT_MODE; 5175 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5176 if (error) { 5177 status = puterrno4(error); 5178 goto done; 5179 } 5180 if ((sarg.vap->va_mode ^ va.va_mode) & 5181 ~(VSUID | VSGID | VSVTX)) { 5182 status = NFS4ERR_INVAL; 5183 goto done; 5184 } 5185 } 5186 5187 /* Check stateid only if size has been set */ 5188 if (sarg.vap->va_mask & AT_SIZE) { 5189 trunc = (sarg.vap->va_size == 0); 5190 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5191 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5192 if (status != NFS4_OK) 5193 goto done; 5194 } else { 5195 ct.cc_sysid = 0; 5196 ct.cc_pid = 0; 5197 ct.cc_caller_id = nfs4_srv_caller_id; 5198 ct.cc_flags = CC_DONTBLOCK; 5199 } 5200 5201 /* XXX start of possible race with delegations */ 5202 5203 /* 5204 * We need to specially handle size changes because it is 5205 * possible for the client to create a file with read-only 5206 * modes, but with the file opened for writing. If the client 5207 * then tries to set the file size, e.g. ftruncate(3C), 5208 * fcntl(F_FREESP), the normal access checking done in 5209 * VOP_SETATTR would prevent the client from doing it even though 5210 * it should be allowed to do so. To get around this, we do the 5211 * access checking for ourselves and use VOP_SPACE which doesn't 5212 * do the access checking. 5213 * Also the client should not be allowed to change the file 5214 * size if there is a conflicting non-blocking mandatory lock in 5215 * the region of the change. 5216 */ 5217 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5218 u_offset_t offset; 5219 ssize_t length; 5220 5221 /* 5222 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5223 * before returning, sarg.vap->va_mask is used to 5224 * generate the setattr reply bitmap. We also clear 5225 * AT_SIZE below before calling VOP_SPACE. For both 5226 * of these cases, the va_mask needs to be saved here 5227 * and restored after calling VOP_SETATTR. 5228 */ 5229 saved_mask = sarg.vap->va_mask; 5230 5231 /* 5232 * Check any possible conflict due to NBMAND locks. 5233 * Get into critical region before VOP_GETATTR, so the 5234 * size attribute is valid when checking conflicts. 5235 */ 5236 if (nbl_need_check(vp)) { 5237 nbl_start_crit(vp, RW_READER); 5238 in_crit = 1; 5239 } 5240 5241 bva.va_mask = AT_UID|AT_SIZE; 5242 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5243 status = puterrno4(error); 5244 goto done; 5245 } 5246 5247 if (in_crit) { 5248 if (sarg.vap->va_size < bva.va_size) { 5249 offset = sarg.vap->va_size; 5250 length = bva.va_size - sarg.vap->va_size; 5251 } else { 5252 offset = bva.va_size; 5253 length = sarg.vap->va_size - bva.va_size; 5254 } 5255 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5256 &ct)) { 5257 status = NFS4ERR_LOCKED; 5258 goto done; 5259 } 5260 } 5261 5262 if (crgetuid(cr) == bva.va_uid) { 5263 sarg.vap->va_mask &= ~AT_SIZE; 5264 bf.l_type = F_WRLCK; 5265 bf.l_whence = 0; 5266 bf.l_start = (off64_t)sarg.vap->va_size; 5267 bf.l_len = 0; 5268 bf.l_sysid = 0; 5269 bf.l_pid = 0; 5270 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5271 (offset_t)sarg.vap->va_size, cr, &ct); 5272 } 5273 } 5274 5275 if (!error && sarg.vap->va_mask != 0) 5276 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5277 5278 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5279 if (saved_mask & AT_SIZE) 5280 sarg.vap->va_mask |= AT_SIZE; 5281 5282 /* 5283 * If an ACL was being set, it has been delayed until now, 5284 * in order to set the mode (via the VOP_SETATTR() above) first. 5285 */ 5286 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5287 int i; 5288 5289 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5290 if (ntov.amap[i] == FATTR4_ACL) 5291 break; 5292 if (i < NFS4_MAXNUM_ATTRS) { 5293 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5294 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5295 if (error == 0) { 5296 *resp |= FATTR4_ACL_MASK; 5297 } else if (error == ENOTSUP) { 5298 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5299 status = NFS4ERR_ATTRNOTSUPP; 5300 goto done; 5301 } 5302 } else { 5303 NFS4_DEBUG(rfs4_debug, 5304 (CE_NOTE, "do_rfs4_op_setattr: " 5305 "unable to find ACL in fattr4")); 5306 error = EINVAL; 5307 } 5308 } 5309 5310 if (error) { 5311 /* check if a monitor detected a delegation conflict */ 5312 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5313 status = NFS4ERR_DELAY; 5314 else 5315 status = puterrno4(error); 5316 5317 /* 5318 * Set the response bitmap when setattr failed. 5319 * If VOP_SETATTR partially succeeded, test by doing a 5320 * VOP_GETATTR on the object and comparing the data 5321 * to the setattr arguments. 5322 */ 5323 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5324 } else { 5325 /* 5326 * Force modified metadata out to stable storage. 5327 */ 5328 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5329 /* 5330 * Set response bitmap 5331 */ 5332 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5333 } 5334 5335 /* Return early and already have a NFSv4 error */ 5336 done: 5337 /* 5338 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5339 * conversion sets both readable and writeable NFS4 attrs 5340 * for AT_MTIME and AT_ATIME. The line below masks out 5341 * unrequested attrs from the setattr result bitmap. This 5342 * is placed after the done: label to catch the ATTRNOTSUP 5343 * case. 5344 */ 5345 *resp &= fattrp->attrmask; 5346 5347 if (in_crit) 5348 nbl_end_crit(vp); 5349 5350 nfs4_ntov_table_free(&ntov, &sarg); 5351 5352 return (status); 5353 } 5354 5355 /* ARGSUSED */ 5356 static void 5357 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5358 struct compound_state *cs) 5359 { 5360 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5361 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5362 bslabel_t *clabel; 5363 5364 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5365 SETATTR4args *, args); 5366 5367 if (cs->vp == NULL) { 5368 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5369 goto out; 5370 } 5371 5372 /* 5373 * If there is an unshared filesystem mounted on this vnode, 5374 * do not allow to setattr on this vnode. 5375 */ 5376 if (vn_ismntpt(cs->vp)) { 5377 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5378 goto out; 5379 } 5380 5381 resp->attrsset = 0; 5382 5383 if (rdonly4(req, cs)) { 5384 *cs->statusp = resp->status = NFS4ERR_ROFS; 5385 goto out; 5386 } 5387 5388 /* check label before setting attributes */ 5389 if (is_system_labeled()) { 5390 ASSERT(req->rq_label != NULL); 5391 clabel = req->rq_label; 5392 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5393 "got client label from request(1)", 5394 struct svc_req *, req); 5395 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5396 if (!do_rfs_label_check(clabel, cs->vp, 5397 EQUALITY_CHECK, cs->exi)) { 5398 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5399 goto out; 5400 } 5401 } 5402 } 5403 5404 *cs->statusp = resp->status = 5405 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5406 &args->stateid); 5407 5408 out: 5409 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5410 SETATTR4res *, resp); 5411 } 5412 5413 /* ARGSUSED */ 5414 static void 5415 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5416 struct compound_state *cs) 5417 { 5418 /* 5419 * verify and nverify are exactly the same, except that nverify 5420 * succeeds when some argument changed, and verify succeeds when 5421 * when none changed. 5422 */ 5423 5424 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5425 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5426 5427 int error; 5428 struct nfs4_svgetit_arg sarg; 5429 struct statvfs64 sb; 5430 struct nfs4_ntov_table ntov; 5431 5432 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5433 VERIFY4args *, args); 5434 5435 if (cs->vp == NULL) { 5436 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5437 goto out; 5438 } 5439 5440 sarg.sbp = &sb; 5441 sarg.is_referral = B_FALSE; 5442 nfs4_ntov_table_init(&ntov); 5443 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5444 &sarg, &ntov, NFS4ATTR_VERIT); 5445 if (resp->status != NFS4_OK) { 5446 /* 5447 * do_rfs4_set_attrs will try to verify systemwide attrs, 5448 * so could return -1 for "no match". 5449 */ 5450 if (resp->status == -1) 5451 resp->status = NFS4ERR_NOT_SAME; 5452 goto done; 5453 } 5454 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5455 switch (error) { 5456 case 0: 5457 resp->status = NFS4_OK; 5458 break; 5459 case -1: 5460 resp->status = NFS4ERR_NOT_SAME; 5461 break; 5462 default: 5463 resp->status = puterrno4(error); 5464 break; 5465 } 5466 done: 5467 *cs->statusp = resp->status; 5468 nfs4_ntov_table_free(&ntov, &sarg); 5469 out: 5470 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5471 VERIFY4res *, resp); 5472 } 5473 5474 /* ARGSUSED */ 5475 static void 5476 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5477 struct compound_state *cs) 5478 { 5479 /* 5480 * verify and nverify are exactly the same, except that nverify 5481 * succeeds when some argument changed, and verify succeeds when 5482 * when none changed. 5483 */ 5484 5485 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5486 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5487 5488 int error; 5489 struct nfs4_svgetit_arg sarg; 5490 struct statvfs64 sb; 5491 struct nfs4_ntov_table ntov; 5492 5493 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5494 NVERIFY4args *, args); 5495 5496 if (cs->vp == NULL) { 5497 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5498 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5499 NVERIFY4res *, resp); 5500 return; 5501 } 5502 sarg.sbp = &sb; 5503 sarg.is_referral = B_FALSE; 5504 nfs4_ntov_table_init(&ntov); 5505 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5506 &sarg, &ntov, NFS4ATTR_VERIT); 5507 if (resp->status != NFS4_OK) { 5508 /* 5509 * do_rfs4_set_attrs will try to verify systemwide attrs, 5510 * so could return -1 for "no match". 5511 */ 5512 if (resp->status == -1) 5513 resp->status = NFS4_OK; 5514 goto done; 5515 } 5516 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5517 switch (error) { 5518 case 0: 5519 resp->status = NFS4ERR_SAME; 5520 break; 5521 case -1: 5522 resp->status = NFS4_OK; 5523 break; 5524 default: 5525 resp->status = puterrno4(error); 5526 break; 5527 } 5528 done: 5529 *cs->statusp = resp->status; 5530 nfs4_ntov_table_free(&ntov, &sarg); 5531 5532 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5533 NVERIFY4res *, resp); 5534 } 5535 5536 /* 5537 * XXX - This should live in an NFS header file. 5538 */ 5539 #define MAX_IOVECS 12 5540 5541 /* ARGSUSED */ 5542 static void 5543 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5544 struct compound_state *cs) 5545 { 5546 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5547 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5548 int error; 5549 vnode_t *vp; 5550 struct vattr bva; 5551 u_offset_t rlimit; 5552 struct uio uio; 5553 struct iovec iov[MAX_IOVECS]; 5554 struct iovec *iovp; 5555 int iovcnt; 5556 int ioflag; 5557 cred_t *savecred, *cr; 5558 bool_t *deleg = &cs->deleg; 5559 nfsstat4 stat; 5560 int in_crit = 0; 5561 caller_context_t ct; 5562 5563 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5564 WRITE4args *, args); 5565 5566 vp = cs->vp; 5567 if (vp == NULL) { 5568 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5569 goto out; 5570 } 5571 if (cs->access == CS_ACCESS_DENIED) { 5572 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5573 goto out; 5574 } 5575 5576 cr = cs->cr; 5577 5578 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5579 deleg, TRUE, &ct)) != NFS4_OK) { 5580 *cs->statusp = resp->status = stat; 5581 goto out; 5582 } 5583 5584 /* 5585 * We have to enter the critical region before calling VOP_RWLOCK 5586 * to avoid a deadlock with ufs. 5587 */ 5588 if (nbl_need_check(vp)) { 5589 nbl_start_crit(vp, RW_READER); 5590 in_crit = 1; 5591 if (nbl_conflict(vp, NBL_WRITE, 5592 args->offset, args->data_len, 0, &ct)) { 5593 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5594 goto out; 5595 } 5596 } 5597 5598 bva.va_mask = AT_MODE | AT_UID; 5599 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5600 5601 /* 5602 * If we can't get the attributes, then we can't do the 5603 * right access checking. So, we'll fail the request. 5604 */ 5605 if (error) { 5606 *cs->statusp = resp->status = puterrno4(error); 5607 goto out; 5608 } 5609 5610 if (rdonly4(req, cs)) { 5611 *cs->statusp = resp->status = NFS4ERR_ROFS; 5612 goto out; 5613 } 5614 5615 if (vp->v_type != VREG) { 5616 *cs->statusp = resp->status = 5617 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5618 goto out; 5619 } 5620 5621 if (crgetuid(cr) != bva.va_uid && 5622 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5623 *cs->statusp = resp->status = puterrno4(error); 5624 goto out; 5625 } 5626 5627 if (MANDLOCK(vp, bva.va_mode)) { 5628 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5629 goto out; 5630 } 5631 5632 if (args->data_len == 0) { 5633 *cs->statusp = resp->status = NFS4_OK; 5634 resp->count = 0; 5635 resp->committed = args->stable; 5636 resp->writeverf = Write4verf; 5637 goto out; 5638 } 5639 5640 if (args->mblk != NULL) { 5641 mblk_t *m; 5642 uint_t bytes, round_len; 5643 5644 iovcnt = 0; 5645 bytes = 0; 5646 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5647 for (m = args->mblk; 5648 m != NULL && bytes < round_len; 5649 m = m->b_cont) { 5650 iovcnt++; 5651 bytes += MBLKL(m); 5652 } 5653 #ifdef DEBUG 5654 /* should have ended on an mblk boundary */ 5655 if (bytes != round_len) { 5656 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5657 bytes, round_len, args->data_len); 5658 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5659 (void *)args->mblk, (void *)m); 5660 ASSERT(bytes == round_len); 5661 } 5662 #endif 5663 if (iovcnt <= MAX_IOVECS) { 5664 iovp = iov; 5665 } else { 5666 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5667 } 5668 mblk_to_iov(args->mblk, iovcnt, iovp); 5669 } else if (args->rlist != NULL) { 5670 iovcnt = 1; 5671 iovp = iov; 5672 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5673 iovp->iov_len = args->data_len; 5674 } else { 5675 iovcnt = 1; 5676 iovp = iov; 5677 iovp->iov_base = args->data_val; 5678 iovp->iov_len = args->data_len; 5679 } 5680 5681 uio.uio_iov = iovp; 5682 uio.uio_iovcnt = iovcnt; 5683 5684 uio.uio_segflg = UIO_SYSSPACE; 5685 uio.uio_extflg = UIO_COPY_DEFAULT; 5686 uio.uio_loffset = args->offset; 5687 uio.uio_resid = args->data_len; 5688 uio.uio_llimit = curproc->p_fsz_ctl; 5689 rlimit = uio.uio_llimit - args->offset; 5690 if (rlimit < (u_offset_t)uio.uio_resid) 5691 uio.uio_resid = (int)rlimit; 5692 5693 if (args->stable == UNSTABLE4) 5694 ioflag = 0; 5695 else if (args->stable == FILE_SYNC4) 5696 ioflag = FSYNC; 5697 else if (args->stable == DATA_SYNC4) 5698 ioflag = FDSYNC; 5699 else { 5700 if (iovp != iov) 5701 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5702 *cs->statusp = resp->status = NFS4ERR_INVAL; 5703 goto out; 5704 } 5705 5706 /* 5707 * We're changing creds because VM may fault and we need 5708 * the cred of the current thread to be used if quota 5709 * checking is enabled. 5710 */ 5711 savecred = curthread->t_cred; 5712 curthread->t_cred = cr; 5713 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5714 curthread->t_cred = savecred; 5715 5716 if (iovp != iov) 5717 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5718 5719 if (error) { 5720 *cs->statusp = resp->status = puterrno4(error); 5721 goto out; 5722 } 5723 5724 *cs->statusp = resp->status = NFS4_OK; 5725 resp->count = args->data_len - uio.uio_resid; 5726 5727 if (ioflag == 0) 5728 resp->committed = UNSTABLE4; 5729 else 5730 resp->committed = FILE_SYNC4; 5731 5732 resp->writeverf = Write4verf; 5733 5734 out: 5735 if (in_crit) 5736 nbl_end_crit(vp); 5737 5738 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5739 WRITE4res *, resp); 5740 } 5741 5742 5743 /* XXX put in a header file */ 5744 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5745 5746 void 5747 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5748 struct svc_req *req, cred_t *cr, int *rv) 5749 { 5750 uint_t i; 5751 struct compound_state cs; 5752 5753 if (rv != NULL) 5754 *rv = 0; 5755 rfs4_init_compound_state(&cs); 5756 /* 5757 * Form a reply tag by copying over the reqeuest tag. 5758 */ 5759 resp->tag.utf8string_val = 5760 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5761 resp->tag.utf8string_len = args->tag.utf8string_len; 5762 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5763 resp->tag.utf8string_len); 5764 5765 cs.statusp = &resp->status; 5766 cs.req = req; 5767 resp->array = NULL; 5768 resp->array_len = 0; 5769 5770 /* 5771 * XXX for now, minorversion should be zero 5772 */ 5773 if (args->minorversion != NFS4_MINORVERSION) { 5774 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5775 &cs, COMPOUND4args *, args); 5776 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5777 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5778 &cs, COMPOUND4res *, resp); 5779 return; 5780 } 5781 5782 if (args->array_len == 0) { 5783 resp->status = NFS4_OK; 5784 return; 5785 } 5786 5787 ASSERT(exi == NULL); 5788 ASSERT(cr == NULL); 5789 5790 cr = crget(); 5791 ASSERT(cr != NULL); 5792 5793 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5794 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5795 &cs, COMPOUND4args *, args); 5796 crfree(cr); 5797 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5798 &cs, COMPOUND4res *, resp); 5799 svcerr_badcred(req->rq_xprt); 5800 if (rv != NULL) 5801 *rv = 1; 5802 return; 5803 } 5804 resp->array_len = args->array_len; 5805 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5806 KM_SLEEP); 5807 5808 cs.basecr = cr; 5809 5810 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5811 COMPOUND4args *, args); 5812 5813 /* 5814 * For now, NFS4 compound processing must be protected by 5815 * exported_lock because it can access more than one exportinfo 5816 * per compound and share/unshare can now change multiple 5817 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5818 * per proc (excluding public exinfo), and exi_count design 5819 * is sufficient to protect concurrent execution of NFS2/3 5820 * ops along with unexport. This lock will be removed as 5821 * part of the NFSv4 phase 2 namespace redesign work. 5822 */ 5823 rw_enter(&exported_lock, RW_READER); 5824 5825 /* 5826 * If this is the first compound we've seen, we need to start all 5827 * new instances' grace periods. 5828 */ 5829 if (rfs4_seen_first_compound == 0) { 5830 rfs4_grace_start_new(); 5831 /* 5832 * This must be set after rfs4_grace_start_new(), otherwise 5833 * another thread could proceed past here before the former 5834 * is finished. 5835 */ 5836 rfs4_seen_first_compound = 1; 5837 } 5838 5839 for (i = 0; i < args->array_len && cs.cont; i++) { 5840 nfs_argop4 *argop; 5841 nfs_resop4 *resop; 5842 uint_t op; 5843 5844 argop = &args->array[i]; 5845 resop = &resp->array[i]; 5846 resop->resop = argop->argop; 5847 op = (uint_t)resop->resop; 5848 5849 if (op < rfsv4disp_cnt) { 5850 /* 5851 * Count the individual ops here; NULL and COMPOUND 5852 * are counted in common_dispatch() 5853 */ 5854 rfsproccnt_v4_ptr[op].value.ui64++; 5855 5856 NFS4_DEBUG(rfs4_debug > 1, 5857 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5858 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5859 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5860 rfs4_op_string[op], *cs.statusp)); 5861 if (*cs.statusp != NFS4_OK) 5862 cs.cont = FALSE; 5863 } else { 5864 /* 5865 * This is effectively dead code since XDR code 5866 * will have already returned BADXDR if op doesn't 5867 * decode to legal value. This only done for a 5868 * day when XDR code doesn't verify v4 opcodes. 5869 */ 5870 op = OP_ILLEGAL; 5871 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5872 5873 rfs4_op_illegal(argop, resop, req, &cs); 5874 cs.cont = FALSE; 5875 } 5876 5877 /* 5878 * If not at last op, and if we are to stop, then 5879 * compact the results array. 5880 */ 5881 if ((i + 1) < args->array_len && !cs.cont) { 5882 nfs_resop4 *new_res = kmem_alloc( 5883 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5884 bcopy(resp->array, 5885 new_res, (i+1) * sizeof (nfs_resop4)); 5886 kmem_free(resp->array, 5887 args->array_len * sizeof (nfs_resop4)); 5888 5889 resp->array_len = i + 1; 5890 resp->array = new_res; 5891 } 5892 } 5893 5894 rw_exit(&exported_lock); 5895 5896 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5897 COMPOUND4res *, resp); 5898 5899 if (cs.vp) 5900 VN_RELE(cs.vp); 5901 if (cs.saved_vp) 5902 VN_RELE(cs.saved_vp); 5903 if (cs.saved_fh.nfs_fh4_val) 5904 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5905 5906 if (cs.basecr) 5907 crfree(cs.basecr); 5908 if (cs.cr) 5909 crfree(cs.cr); 5910 /* 5911 * done with this compound request, free the label 5912 */ 5913 5914 if (req->rq_label != NULL) { 5915 kmem_free(req->rq_label, sizeof (bslabel_t)); 5916 req->rq_label = NULL; 5917 } 5918 } 5919 5920 /* 5921 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5922 * XXX zero out the tag and array values. Need to investigate why the 5923 * XXX calls occur, but at least prevent the panic for now. 5924 */ 5925 void 5926 rfs4_compound_free(COMPOUND4res *resp) 5927 { 5928 uint_t i; 5929 5930 if (resp->tag.utf8string_val) { 5931 UTF8STRING_FREE(resp->tag) 5932 } 5933 5934 for (i = 0; i < resp->array_len; i++) { 5935 nfs_resop4 *resop; 5936 uint_t op; 5937 5938 resop = &resp->array[i]; 5939 op = (uint_t)resop->resop; 5940 if (op < rfsv4disp_cnt) { 5941 (*rfsv4disptab[op].dis_resfree)(resop); 5942 } 5943 } 5944 if (resp->array != NULL) { 5945 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5946 } 5947 } 5948 5949 /* 5950 * Process the value of the compound request rpc flags, as a bit-AND 5951 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5952 */ 5953 void 5954 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5955 { 5956 int i; 5957 int flag = RPC_ALL; 5958 5959 for (i = 0; flag && i < args->array_len; i++) { 5960 uint_t op; 5961 5962 op = (uint_t)args->array[i].argop; 5963 5964 if (op < rfsv4disp_cnt) 5965 flag &= rfsv4disptab[op].dis_flags; 5966 else 5967 flag = 0; 5968 } 5969 *flagp = flag; 5970 } 5971 5972 nfsstat4 5973 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5974 { 5975 nfsstat4 e; 5976 5977 rfs4_dbe_lock(cp->rc_dbe); 5978 5979 if (cp->rc_sysidt != LM_NOSYSID) { 5980 *sp = cp->rc_sysidt; 5981 e = NFS4_OK; 5982 5983 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5984 *sp = cp->rc_sysidt; 5985 e = NFS4_OK; 5986 5987 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5988 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5989 } else 5990 e = NFS4ERR_DELAY; 5991 5992 rfs4_dbe_unlock(cp->rc_dbe); 5993 return (e); 5994 } 5995 5996 #if defined(DEBUG) && ! defined(lint) 5997 static void lock_print(char *str, int operation, struct flock64 *flk) 5998 { 5999 char *op, *type; 6000 6001 switch (operation) { 6002 case F_GETLK: op = "F_GETLK"; 6003 break; 6004 case F_SETLK: op = "F_SETLK"; 6005 break; 6006 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6007 break; 6008 default: op = "F_UNKNOWN"; 6009 break; 6010 } 6011 switch (flk->l_type) { 6012 case F_UNLCK: type = "F_UNLCK"; 6013 break; 6014 case F_RDLCK: type = "F_RDLCK"; 6015 break; 6016 case F_WRLCK: type = "F_WRLCK"; 6017 break; 6018 default: type = "F_UNKNOWN"; 6019 break; 6020 } 6021 6022 ASSERT(flk->l_whence == 0); 6023 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6024 str, op, type, (longlong_t)flk->l_start, 6025 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6026 } 6027 6028 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6029 #else 6030 #define LOCK_PRINT(d, s, t, f) 6031 #endif 6032 6033 /*ARGSUSED*/ 6034 static bool_t 6035 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6036 { 6037 return (TRUE); 6038 } 6039 6040 /* 6041 * Look up the pathname using the vp in cs as the directory vnode. 6042 * cs->vp will be the vnode for the file on success 6043 */ 6044 6045 static nfsstat4 6046 rfs4_lookup(component4 *component, struct svc_req *req, 6047 struct compound_state *cs) 6048 { 6049 char *nm; 6050 uint32_t len; 6051 nfsstat4 status; 6052 struct sockaddr *ca; 6053 char *name; 6054 6055 if (cs->vp == NULL) { 6056 return (NFS4ERR_NOFILEHANDLE); 6057 } 6058 if (cs->vp->v_type != VDIR) { 6059 return (NFS4ERR_NOTDIR); 6060 } 6061 6062 status = utf8_dir_verify(component); 6063 if (status != NFS4_OK) 6064 return (status); 6065 6066 nm = utf8_to_fn(component, &len, NULL); 6067 if (nm == NULL) { 6068 return (NFS4ERR_INVAL); 6069 } 6070 6071 if (len > MAXNAMELEN) { 6072 kmem_free(nm, len); 6073 return (NFS4ERR_NAMETOOLONG); 6074 } 6075 6076 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6077 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6078 MAXPATHLEN + 1); 6079 6080 if (name == NULL) { 6081 kmem_free(nm, len); 6082 return (NFS4ERR_INVAL); 6083 } 6084 6085 status = do_rfs4_op_lookup(name, req, cs); 6086 6087 if (name != nm) 6088 kmem_free(name, MAXPATHLEN + 1); 6089 6090 kmem_free(nm, len); 6091 6092 return (status); 6093 } 6094 6095 static nfsstat4 6096 rfs4_lookupfile(component4 *component, struct svc_req *req, 6097 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6098 { 6099 nfsstat4 status; 6100 vnode_t *dvp = cs->vp; 6101 vattr_t bva, ava, fva; 6102 int error; 6103 6104 /* Get "before" change value */ 6105 bva.va_mask = AT_CTIME|AT_SEQ; 6106 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6107 if (error) 6108 return (puterrno4(error)); 6109 6110 /* rfs4_lookup may VN_RELE directory */ 6111 VN_HOLD(dvp); 6112 6113 status = rfs4_lookup(component, req, cs); 6114 if (status != NFS4_OK) { 6115 VN_RELE(dvp); 6116 return (status); 6117 } 6118 6119 /* 6120 * Get "after" change value, if it fails, simply return the 6121 * before value. 6122 */ 6123 ava.va_mask = AT_CTIME|AT_SEQ; 6124 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6125 ava.va_ctime = bva.va_ctime; 6126 ava.va_seq = 0; 6127 } 6128 VN_RELE(dvp); 6129 6130 /* 6131 * Validate the file is a file 6132 */ 6133 fva.va_mask = AT_TYPE|AT_MODE; 6134 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6135 if (error) 6136 return (puterrno4(error)); 6137 6138 if (fva.va_type != VREG) { 6139 if (fva.va_type == VDIR) 6140 return (NFS4ERR_ISDIR); 6141 if (fva.va_type == VLNK) 6142 return (NFS4ERR_SYMLINK); 6143 return (NFS4ERR_INVAL); 6144 } 6145 6146 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6147 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6148 6149 /* 6150 * It is undefined if VOP_LOOKUP will change va_seq, so 6151 * cinfo.atomic = TRUE only if we have 6152 * non-zero va_seq's, and they have not changed. 6153 */ 6154 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6155 cinfo->atomic = TRUE; 6156 else 6157 cinfo->atomic = FALSE; 6158 6159 /* Check for mandatory locking */ 6160 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6161 return (check_open_access(access, cs, req)); 6162 } 6163 6164 static nfsstat4 6165 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6166 cred_t *cr, vnode_t **vpp, bool_t *created) 6167 { 6168 int error; 6169 nfsstat4 status = NFS4_OK; 6170 vattr_t va; 6171 6172 tryagain: 6173 6174 /* 6175 * The file open mode used is VWRITE. If the client needs 6176 * some other semantic, then it should do the access checking 6177 * itself. It would have been nice to have the file open mode 6178 * passed as part of the arguments. 6179 */ 6180 6181 *created = TRUE; 6182 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6183 6184 if (error) { 6185 *created = FALSE; 6186 6187 /* 6188 * If we got something other than file already exists 6189 * then just return this error. Otherwise, we got 6190 * EEXIST. If we were doing a GUARDED create, then 6191 * just return this error. Otherwise, we need to 6192 * make sure that this wasn't a duplicate of an 6193 * exclusive create request. 6194 * 6195 * The assumption is made that a non-exclusive create 6196 * request will never return EEXIST. 6197 */ 6198 6199 if (error != EEXIST || mode == GUARDED4) { 6200 status = puterrno4(error); 6201 return (status); 6202 } 6203 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6204 NULL, NULL, NULL); 6205 6206 if (error) { 6207 /* 6208 * We couldn't find the file that we thought that 6209 * we just created. So, we'll just try creating 6210 * it again. 6211 */ 6212 if (error == ENOENT) 6213 goto tryagain; 6214 6215 status = puterrno4(error); 6216 return (status); 6217 } 6218 6219 if (mode == UNCHECKED4) { 6220 /* existing object must be regular file */ 6221 if ((*vpp)->v_type != VREG) { 6222 if ((*vpp)->v_type == VDIR) 6223 status = NFS4ERR_ISDIR; 6224 else if ((*vpp)->v_type == VLNK) 6225 status = NFS4ERR_SYMLINK; 6226 else 6227 status = NFS4ERR_INVAL; 6228 VN_RELE(*vpp); 6229 return (status); 6230 } 6231 6232 return (NFS4_OK); 6233 } 6234 6235 /* Check for duplicate request */ 6236 va.va_mask = AT_MTIME; 6237 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6238 if (!error) { 6239 /* We found the file */ 6240 const timestruc_t *mtime = &vap->va_mtime; 6241 6242 if (va.va_mtime.tv_sec != mtime->tv_sec || 6243 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6244 /* but its not our creation */ 6245 VN_RELE(*vpp); 6246 return (NFS4ERR_EXIST); 6247 } 6248 *created = TRUE; /* retrans of create == created */ 6249 return (NFS4_OK); 6250 } 6251 VN_RELE(*vpp); 6252 return (NFS4ERR_EXIST); 6253 } 6254 6255 return (NFS4_OK); 6256 } 6257 6258 static nfsstat4 6259 check_open_access(uint32_t access, struct compound_state *cs, 6260 struct svc_req *req) 6261 { 6262 int error; 6263 vnode_t *vp; 6264 bool_t readonly; 6265 cred_t *cr = cs->cr; 6266 6267 /* For now we don't allow mandatory locking as per V2/V3 */ 6268 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6269 return (NFS4ERR_ACCESS); 6270 } 6271 6272 vp = cs->vp; 6273 ASSERT(cr != NULL && vp->v_type == VREG); 6274 6275 /* 6276 * If the file system is exported read only and we are trying 6277 * to open for write, then return NFS4ERR_ROFS 6278 */ 6279 6280 readonly = rdonly4(req, cs); 6281 6282 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6283 return (NFS4ERR_ROFS); 6284 6285 if (access & OPEN4_SHARE_ACCESS_READ) { 6286 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6287 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6288 return (NFS4ERR_ACCESS); 6289 } 6290 } 6291 6292 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6293 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6294 if (error) 6295 return (NFS4ERR_ACCESS); 6296 } 6297 6298 return (NFS4_OK); 6299 } 6300 6301 static nfsstat4 6302 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6303 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6304 { 6305 struct nfs4_svgetit_arg sarg; 6306 struct nfs4_ntov_table ntov; 6307 6308 bool_t ntov_table_init = FALSE; 6309 struct statvfs64 sb; 6310 nfsstat4 status; 6311 vnode_t *vp; 6312 vattr_t bva, ava, iva, cva, *vap; 6313 vnode_t *dvp; 6314 timespec32_t *mtime; 6315 char *nm = NULL; 6316 uint_t buflen; 6317 bool_t created; 6318 bool_t setsize = FALSE; 6319 len_t reqsize; 6320 int error; 6321 bool_t trunc; 6322 caller_context_t ct; 6323 component4 *component; 6324 bslabel_t *clabel; 6325 struct sockaddr *ca; 6326 char *name = NULL; 6327 6328 sarg.sbp = &sb; 6329 sarg.is_referral = B_FALSE; 6330 6331 dvp = cs->vp; 6332 6333 /* Check if the file system is read only */ 6334 if (rdonly4(req, cs)) 6335 return (NFS4ERR_ROFS); 6336 6337 /* check the label of including directory */ 6338 if (is_system_labeled()) { 6339 ASSERT(req->rq_label != NULL); 6340 clabel = req->rq_label; 6341 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6342 "got client label from request(1)", 6343 struct svc_req *, req); 6344 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6345 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6346 cs->exi)) { 6347 return (NFS4ERR_ACCESS); 6348 } 6349 } 6350 } 6351 6352 /* 6353 * Get the last component of path name in nm. cs will reference 6354 * the including directory on success. 6355 */ 6356 component = &args->open_claim4_u.file; 6357 status = utf8_dir_verify(component); 6358 if (status != NFS4_OK) 6359 return (status); 6360 6361 nm = utf8_to_fn(component, &buflen, NULL); 6362 6363 if (nm == NULL) 6364 return (NFS4ERR_RESOURCE); 6365 6366 if (buflen > MAXNAMELEN) { 6367 kmem_free(nm, buflen); 6368 return (NFS4ERR_NAMETOOLONG); 6369 } 6370 6371 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6372 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6373 if (error) { 6374 kmem_free(nm, buflen); 6375 return (puterrno4(error)); 6376 } 6377 6378 if (bva.va_type != VDIR) { 6379 kmem_free(nm, buflen); 6380 return (NFS4ERR_NOTDIR); 6381 } 6382 6383 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6384 6385 switch (args->mode) { 6386 case GUARDED4: 6387 /*FALLTHROUGH*/ 6388 case UNCHECKED4: 6389 nfs4_ntov_table_init(&ntov); 6390 ntov_table_init = TRUE; 6391 6392 *attrset = 0; 6393 status = do_rfs4_set_attrs(attrset, 6394 &args->createhow4_u.createattrs, 6395 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6396 6397 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6398 sarg.vap->va_type != VREG) { 6399 if (sarg.vap->va_type == VDIR) 6400 status = NFS4ERR_ISDIR; 6401 else if (sarg.vap->va_type == VLNK) 6402 status = NFS4ERR_SYMLINK; 6403 else 6404 status = NFS4ERR_INVAL; 6405 } 6406 6407 if (status != NFS4_OK) { 6408 kmem_free(nm, buflen); 6409 nfs4_ntov_table_free(&ntov, &sarg); 6410 *attrset = 0; 6411 return (status); 6412 } 6413 6414 vap = sarg.vap; 6415 vap->va_type = VREG; 6416 vap->va_mask |= AT_TYPE; 6417 6418 if ((vap->va_mask & AT_MODE) == 0) { 6419 vap->va_mask |= AT_MODE; 6420 vap->va_mode = (mode_t)0600; 6421 } 6422 6423 if (vap->va_mask & AT_SIZE) { 6424 6425 /* Disallow create with a non-zero size */ 6426 6427 if ((reqsize = sarg.vap->va_size) != 0) { 6428 kmem_free(nm, buflen); 6429 nfs4_ntov_table_free(&ntov, &sarg); 6430 *attrset = 0; 6431 return (NFS4ERR_INVAL); 6432 } 6433 setsize = TRUE; 6434 } 6435 break; 6436 6437 case EXCLUSIVE4: 6438 /* prohibit EXCL create of named attributes */ 6439 if (dvp->v_flag & V_XATTRDIR) { 6440 kmem_free(nm, buflen); 6441 *attrset = 0; 6442 return (NFS4ERR_INVAL); 6443 } 6444 6445 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6446 cva.va_type = VREG; 6447 /* 6448 * Ensure no time overflows. Assumes underlying 6449 * filesystem supports at least 32 bits. 6450 * Truncate nsec to usec resolution to allow valid 6451 * compares even if the underlying filesystem truncates. 6452 */ 6453 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6454 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6455 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6456 cva.va_mode = (mode_t)0; 6457 vap = &cva; 6458 6459 /* 6460 * For EXCL create, attrset is set to the server attr 6461 * used to cache the client's verifier. 6462 */ 6463 *attrset = FATTR4_TIME_MODIFY_MASK; 6464 break; 6465 } 6466 6467 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6468 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6469 MAXPATHLEN + 1); 6470 6471 if (name == NULL) { 6472 kmem_free(nm, buflen); 6473 return (NFS4ERR_SERVERFAULT); 6474 } 6475 6476 status = create_vnode(dvp, name, vap, args->mode, 6477 cs->cr, &vp, &created); 6478 if (nm != name) 6479 kmem_free(name, MAXPATHLEN + 1); 6480 kmem_free(nm, buflen); 6481 6482 if (status != NFS4_OK) { 6483 if (ntov_table_init) 6484 nfs4_ntov_table_free(&ntov, &sarg); 6485 *attrset = 0; 6486 return (status); 6487 } 6488 6489 trunc = (setsize && !created); 6490 6491 if (args->mode != EXCLUSIVE4) { 6492 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6493 6494 /* 6495 * True verification that object was created with correct 6496 * attrs is impossible. The attrs could have been changed 6497 * immediately after object creation. If attributes did 6498 * not verify, the only recourse for the server is to 6499 * destroy the object. Maybe if some attrs (like gid) 6500 * are set incorrectly, the object should be destroyed; 6501 * however, seems bad as a default policy. Do we really 6502 * want to destroy an object over one of the times not 6503 * verifying correctly? For these reasons, the server 6504 * currently sets bits in attrset for createattrs 6505 * that were set; however, no verification is done. 6506 * 6507 * vmask_to_nmask accounts for vattr bits set on create 6508 * [do_rfs4_set_attrs() only sets resp bits for 6509 * non-vattr/vfs bits.] 6510 * Mask off any bits we set by default so as not to return 6511 * more attrset bits than were requested in createattrs 6512 */ 6513 if (created) { 6514 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6515 *attrset &= createmask; 6516 } else { 6517 /* 6518 * We did not create the vnode (we tried but it 6519 * already existed). In this case, the only createattr 6520 * that the spec allows the server to set is size, 6521 * and even then, it can only be set if it is 0. 6522 */ 6523 *attrset = 0; 6524 if (trunc) 6525 *attrset = FATTR4_SIZE_MASK; 6526 } 6527 } 6528 if (ntov_table_init) 6529 nfs4_ntov_table_free(&ntov, &sarg); 6530 6531 /* 6532 * Get the initial "after" sequence number, if it fails, 6533 * set to zero, time to before. 6534 */ 6535 iva.va_mask = AT_CTIME|AT_SEQ; 6536 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6537 iva.va_seq = 0; 6538 iva.va_ctime = bva.va_ctime; 6539 } 6540 6541 /* 6542 * create_vnode attempts to create the file exclusive, 6543 * if it already exists the VOP_CREATE will fail and 6544 * may not increase va_seq. It is atomic if 6545 * we haven't changed the directory, but if it has changed 6546 * we don't know what changed it. 6547 */ 6548 if (!created) { 6549 if (bva.va_seq && iva.va_seq && 6550 bva.va_seq == iva.va_seq) 6551 cinfo->atomic = TRUE; 6552 else 6553 cinfo->atomic = FALSE; 6554 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6555 } else { 6556 /* 6557 * The entry was created, we need to sync the 6558 * directory metadata. 6559 */ 6560 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6561 6562 /* 6563 * Get "after" change value, if it fails, simply return the 6564 * before value. 6565 */ 6566 ava.va_mask = AT_CTIME|AT_SEQ; 6567 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6568 ava.va_ctime = bva.va_ctime; 6569 ava.va_seq = 0; 6570 } 6571 6572 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6573 6574 /* 6575 * The cinfo->atomic = TRUE only if we have 6576 * non-zero va_seq's, and it has incremented by exactly one 6577 * during the create_vnode and it didn't 6578 * change during the VOP_FSYNC. 6579 */ 6580 if (bva.va_seq && iva.va_seq && ava.va_seq && 6581 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6582 cinfo->atomic = TRUE; 6583 else 6584 cinfo->atomic = FALSE; 6585 } 6586 6587 /* Check for mandatory locking and that the size gets set. */ 6588 cva.va_mask = AT_MODE; 6589 if (setsize) 6590 cva.va_mask |= AT_SIZE; 6591 6592 /* Assume the worst */ 6593 cs->mandlock = TRUE; 6594 6595 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6596 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6597 6598 /* 6599 * Truncate the file if necessary; this would be 6600 * the case for create over an existing file. 6601 */ 6602 6603 if (trunc) { 6604 int in_crit = 0; 6605 rfs4_file_t *fp; 6606 bool_t create = FALSE; 6607 6608 /* 6609 * We are writing over an existing file. 6610 * Check to see if we need to recall a delegation. 6611 */ 6612 rfs4_hold_deleg_policy(); 6613 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6614 if (rfs4_check_delegated_byfp(FWRITE, fp, 6615 (reqsize == 0), FALSE, FALSE, &clientid)) { 6616 rfs4_file_rele(fp); 6617 rfs4_rele_deleg_policy(); 6618 VN_RELE(vp); 6619 *attrset = 0; 6620 return (NFS4ERR_DELAY); 6621 } 6622 rfs4_file_rele(fp); 6623 } 6624 rfs4_rele_deleg_policy(); 6625 6626 if (nbl_need_check(vp)) { 6627 in_crit = 1; 6628 6629 ASSERT(reqsize == 0); 6630 6631 nbl_start_crit(vp, RW_READER); 6632 if (nbl_conflict(vp, NBL_WRITE, 0, 6633 cva.va_size, 0, NULL)) { 6634 in_crit = 0; 6635 nbl_end_crit(vp); 6636 VN_RELE(vp); 6637 *attrset = 0; 6638 return (NFS4ERR_ACCESS); 6639 } 6640 } 6641 ct.cc_sysid = 0; 6642 ct.cc_pid = 0; 6643 ct.cc_caller_id = nfs4_srv_caller_id; 6644 ct.cc_flags = CC_DONTBLOCK; 6645 6646 cva.va_mask = AT_SIZE; 6647 cva.va_size = reqsize; 6648 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6649 if (in_crit) 6650 nbl_end_crit(vp); 6651 } 6652 } 6653 6654 error = makefh4(&cs->fh, vp, cs->exi); 6655 6656 /* 6657 * Force modified data and metadata out to stable storage. 6658 */ 6659 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6660 6661 if (error) { 6662 VN_RELE(vp); 6663 *attrset = 0; 6664 return (puterrno4(error)); 6665 } 6666 6667 /* if parent dir is attrdir, set namedattr fh flag */ 6668 if (dvp->v_flag & V_XATTRDIR) 6669 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6670 6671 if (cs->vp) 6672 VN_RELE(cs->vp); 6673 6674 cs->vp = vp; 6675 6676 /* 6677 * if we did not create the file, we will need to check 6678 * the access bits on the file 6679 */ 6680 6681 if (!created) { 6682 if (setsize) 6683 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6684 status = check_open_access(args->share_access, cs, req); 6685 if (status != NFS4_OK) 6686 *attrset = 0; 6687 } 6688 return (status); 6689 } 6690 6691 /*ARGSUSED*/ 6692 static void 6693 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6694 rfs4_openowner_t *oo, delegreq_t deleg, 6695 uint32_t access, uint32_t deny, 6696 OPEN4res *resp, int deleg_cur) 6697 { 6698 /* XXX Currently not using req */ 6699 rfs4_state_t *sp; 6700 rfs4_file_t *fp; 6701 bool_t screate = TRUE; 6702 bool_t fcreate = TRUE; 6703 uint32_t open_a, share_a; 6704 uint32_t open_d, share_d; 6705 rfs4_deleg_state_t *dsp; 6706 sysid_t sysid; 6707 nfsstat4 status; 6708 caller_context_t ct; 6709 int fflags = 0; 6710 int recall = 0; 6711 int err; 6712 int first_open; 6713 6714 /* get the file struct and hold a lock on it during initial open */ 6715 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6716 if (fp == NULL) { 6717 resp->status = NFS4ERR_RESOURCE; 6718 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6719 return; 6720 } 6721 6722 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6723 if (sp == NULL) { 6724 resp->status = NFS4ERR_RESOURCE; 6725 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6726 /* No need to keep any reference */ 6727 rw_exit(&fp->rf_file_rwlock); 6728 rfs4_file_rele(fp); 6729 return; 6730 } 6731 6732 /* try to get the sysid before continuing */ 6733 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6734 resp->status = status; 6735 rfs4_file_rele(fp); 6736 /* Not a fully formed open; "close" it */ 6737 if (screate == TRUE) 6738 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6739 rfs4_state_rele(sp); 6740 return; 6741 } 6742 6743 /* Calculate the fflags for this OPEN. */ 6744 if (access & OPEN4_SHARE_ACCESS_READ) 6745 fflags |= FREAD; 6746 if (access & OPEN4_SHARE_ACCESS_WRITE) 6747 fflags |= FWRITE; 6748 6749 rfs4_dbe_lock(sp->rs_dbe); 6750 6751 /* 6752 * Calculate the new deny and access mode that this open is adding to 6753 * the file for this open owner; 6754 */ 6755 open_d = (deny & ~sp->rs_open_deny); 6756 open_a = (access & ~sp->rs_open_access); 6757 6758 /* 6759 * Calculate the new share access and share deny modes that this open 6760 * is adding to the file for this open owner; 6761 */ 6762 share_a = (access & ~sp->rs_share_access); 6763 share_d = (deny & ~sp->rs_share_deny); 6764 6765 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6766 6767 /* 6768 * Check to see the client has already sent an open for this 6769 * open owner on this file with the same share/deny modes. 6770 * If so, we don't need to check for a conflict and we don't 6771 * need to add another shrlock. If not, then we need to 6772 * check for conflicts in deny and access before checking for 6773 * conflicts in delegation. We don't want to recall a 6774 * delegation based on an open that will eventually fail based 6775 * on shares modes. 6776 */ 6777 6778 if (share_a || share_d) { 6779 if ((err = rfs4_share(sp, access, deny)) != 0) { 6780 rfs4_dbe_unlock(sp->rs_dbe); 6781 resp->status = err; 6782 6783 rfs4_file_rele(fp); 6784 /* Not a fully formed open; "close" it */ 6785 if (screate == TRUE) 6786 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6787 rfs4_state_rele(sp); 6788 return; 6789 } 6790 } 6791 6792 rfs4_dbe_lock(fp->rf_dbe); 6793 6794 /* 6795 * Check to see if this file is delegated and if so, if a 6796 * recall needs to be done. 6797 */ 6798 if (rfs4_check_recall(sp, access)) { 6799 rfs4_dbe_unlock(fp->rf_dbe); 6800 rfs4_dbe_unlock(sp->rs_dbe); 6801 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6802 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6803 rfs4_dbe_lock(sp->rs_dbe); 6804 6805 /* if state closed while lock was dropped */ 6806 if (sp->rs_closed) { 6807 if (share_a || share_d) 6808 (void) rfs4_unshare(sp); 6809 rfs4_dbe_unlock(sp->rs_dbe); 6810 rfs4_file_rele(fp); 6811 /* Not a fully formed open; "close" it */ 6812 if (screate == TRUE) 6813 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6814 rfs4_state_rele(sp); 6815 resp->status = NFS4ERR_OLD_STATEID; 6816 return; 6817 } 6818 6819 rfs4_dbe_lock(fp->rf_dbe); 6820 /* Let's see if the delegation was returned */ 6821 if (rfs4_check_recall(sp, access)) { 6822 rfs4_dbe_unlock(fp->rf_dbe); 6823 if (share_a || share_d) 6824 (void) rfs4_unshare(sp); 6825 rfs4_dbe_unlock(sp->rs_dbe); 6826 rfs4_file_rele(fp); 6827 rfs4_update_lease(sp->rs_owner->ro_client); 6828 6829 /* Not a fully formed open; "close" it */ 6830 if (screate == TRUE) 6831 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6832 rfs4_state_rele(sp); 6833 resp->status = NFS4ERR_DELAY; 6834 return; 6835 } 6836 } 6837 /* 6838 * the share check passed and any delegation conflict has been 6839 * taken care of, now call vop_open. 6840 * if this is the first open then call vop_open with fflags. 6841 * if not, call vn_open_upgrade with just the upgrade flags. 6842 * 6843 * if the file has been opened already, it will have the current 6844 * access mode in the state struct. if it has no share access, then 6845 * this is a new open. 6846 * 6847 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6848 * call VOP_OPEN(), just do the open upgrade. 6849 */ 6850 if (first_open && !deleg_cur) { 6851 ct.cc_sysid = sysid; 6852 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6853 ct.cc_caller_id = nfs4_srv_caller_id; 6854 ct.cc_flags = CC_DONTBLOCK; 6855 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6856 if (err) { 6857 rfs4_dbe_unlock(fp->rf_dbe); 6858 if (share_a || share_d) 6859 (void) rfs4_unshare(sp); 6860 rfs4_dbe_unlock(sp->rs_dbe); 6861 rfs4_file_rele(fp); 6862 6863 /* Not a fully formed open; "close" it */ 6864 if (screate == TRUE) 6865 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6866 rfs4_state_rele(sp); 6867 /* check if a monitor detected a delegation conflict */ 6868 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6869 resp->status = NFS4ERR_DELAY; 6870 else 6871 resp->status = NFS4ERR_SERVERFAULT; 6872 return; 6873 } 6874 } else { /* open upgrade */ 6875 /* 6876 * calculate the fflags for the new mode that is being added 6877 * by this upgrade. 6878 */ 6879 fflags = 0; 6880 if (open_a & OPEN4_SHARE_ACCESS_READ) 6881 fflags |= FREAD; 6882 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6883 fflags |= FWRITE; 6884 vn_open_upgrade(cs->vp, fflags); 6885 } 6886 sp->rs_open_access |= access; 6887 sp->rs_open_deny |= deny; 6888 6889 if (open_d & OPEN4_SHARE_DENY_READ) 6890 fp->rf_deny_read++; 6891 if (open_d & OPEN4_SHARE_DENY_WRITE) 6892 fp->rf_deny_write++; 6893 fp->rf_share_deny |= deny; 6894 6895 if (open_a & OPEN4_SHARE_ACCESS_READ) 6896 fp->rf_access_read++; 6897 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6898 fp->rf_access_write++; 6899 fp->rf_share_access |= access; 6900 6901 /* 6902 * Check for delegation here. if the deleg argument is not 6903 * DELEG_ANY, then this is a reclaim from a client and 6904 * we must honor the delegation requested. If necessary we can 6905 * set the recall flag. 6906 */ 6907 6908 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6909 6910 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6911 6912 next_stateid(&sp->rs_stateid); 6913 6914 resp->stateid = sp->rs_stateid.stateid; 6915 6916 rfs4_dbe_unlock(fp->rf_dbe); 6917 rfs4_dbe_unlock(sp->rs_dbe); 6918 6919 if (dsp) { 6920 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6921 rfs4_deleg_state_rele(dsp); 6922 } 6923 6924 rfs4_file_rele(fp); 6925 rfs4_state_rele(sp); 6926 6927 resp->status = NFS4_OK; 6928 } 6929 6930 /*ARGSUSED*/ 6931 static void 6932 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6933 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6934 { 6935 change_info4 *cinfo = &resp->cinfo; 6936 bitmap4 *attrset = &resp->attrset; 6937 6938 if (args->opentype == OPEN4_NOCREATE) 6939 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6940 req, cs, args->share_access, cinfo); 6941 else { 6942 /* inhibit delegation grants during exclusive create */ 6943 6944 if (args->mode == EXCLUSIVE4) 6945 rfs4_disable_delegation(); 6946 6947 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6948 oo->ro_client->rc_clientid); 6949 } 6950 6951 if (resp->status == NFS4_OK) { 6952 6953 /* cs->vp cs->fh now reference the desired file */ 6954 6955 rfs4_do_open(cs, req, oo, 6956 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 6957 args->share_access, args->share_deny, resp, 0); 6958 6959 /* 6960 * If rfs4_createfile set attrset, we must 6961 * clear this attrset before the response is copied. 6962 */ 6963 if (resp->status != NFS4_OK && resp->attrset) { 6964 resp->attrset = 0; 6965 } 6966 } 6967 else 6968 *cs->statusp = resp->status; 6969 6970 if (args->mode == EXCLUSIVE4) 6971 rfs4_enable_delegation(); 6972 } 6973 6974 /*ARGSUSED*/ 6975 static void 6976 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6977 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6978 { 6979 change_info4 *cinfo = &resp->cinfo; 6980 vattr_t va; 6981 vtype_t v_type = cs->vp->v_type; 6982 int error = 0; 6983 6984 /* Verify that we have a regular file */ 6985 if (v_type != VREG) { 6986 if (v_type == VDIR) 6987 resp->status = NFS4ERR_ISDIR; 6988 else if (v_type == VLNK) 6989 resp->status = NFS4ERR_SYMLINK; 6990 else 6991 resp->status = NFS4ERR_INVAL; 6992 return; 6993 } 6994 6995 va.va_mask = AT_MODE|AT_UID; 6996 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6997 if (error) { 6998 resp->status = puterrno4(error); 6999 return; 7000 } 7001 7002 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7003 7004 /* 7005 * Check if we have access to the file, Note the the file 7006 * could have originally been open UNCHECKED or GUARDED 7007 * with mode bits that will now fail, but there is nothing 7008 * we can really do about that except in the case that the 7009 * owner of the file is the one requesting the open. 7010 */ 7011 if (crgetuid(cs->cr) != va.va_uid) { 7012 resp->status = check_open_access(args->share_access, cs, req); 7013 if (resp->status != NFS4_OK) { 7014 return; 7015 } 7016 } 7017 7018 /* 7019 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7020 */ 7021 cinfo->before = 0; 7022 cinfo->after = 0; 7023 cinfo->atomic = FALSE; 7024 7025 rfs4_do_open(cs, req, oo, 7026 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7027 args->share_access, args->share_deny, resp, 0); 7028 } 7029 7030 static void 7031 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7032 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7033 { 7034 int error; 7035 nfsstat4 status; 7036 stateid4 stateid = 7037 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7038 rfs4_deleg_state_t *dsp; 7039 7040 /* 7041 * Find the state info from the stateid and confirm that the 7042 * file is delegated. If the state openowner is the same as 7043 * the supplied openowner we're done. If not, get the file 7044 * info from the found state info. Use that file info to 7045 * create the state for this lock owner. Note solaris doen't 7046 * really need the pathname to find the file. We may want to 7047 * lookup the pathname and make sure that the vp exist and 7048 * matches the vp in the file structure. However it is 7049 * possible that the pathname nolonger exists (local process 7050 * unlinks the file), so this may not be that useful. 7051 */ 7052 7053 status = rfs4_get_deleg_state(&stateid, &dsp); 7054 if (status != NFS4_OK) { 7055 resp->status = status; 7056 return; 7057 } 7058 7059 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7060 7061 /* 7062 * New lock owner, create state. Since this was probably called 7063 * in response to a CB_RECALL we set deleg to DELEG_NONE 7064 */ 7065 7066 ASSERT(cs->vp != NULL); 7067 VN_RELE(cs->vp); 7068 VN_HOLD(dsp->rds_finfo->rf_vp); 7069 cs->vp = dsp->rds_finfo->rf_vp; 7070 7071 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7072 rfs4_deleg_state_rele(dsp); 7073 *cs->statusp = resp->status = puterrno4(error); 7074 return; 7075 } 7076 7077 /* Mark progress for delegation returns */ 7078 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7079 rfs4_deleg_state_rele(dsp); 7080 rfs4_do_open(cs, req, oo, DELEG_NONE, 7081 args->share_access, args->share_deny, resp, 1); 7082 } 7083 7084 /*ARGSUSED*/ 7085 static void 7086 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7087 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7088 { 7089 /* 7090 * Lookup the pathname, it must already exist since this file 7091 * was delegated. 7092 * 7093 * Find the file and state info for this vp and open owner pair. 7094 * check that they are in fact delegated. 7095 * check that the state access and deny modes are the same. 7096 * 7097 * Return the delgation possibly seting the recall flag. 7098 */ 7099 rfs4_file_t *fp; 7100 rfs4_state_t *sp; 7101 bool_t create = FALSE; 7102 bool_t dcreate = FALSE; 7103 rfs4_deleg_state_t *dsp; 7104 nfsace4 *ace; 7105 7106 /* Note we ignore oflags */ 7107 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7108 req, cs, args->share_access, &resp->cinfo); 7109 7110 if (resp->status != NFS4_OK) { 7111 return; 7112 } 7113 7114 /* get the file struct and hold a lock on it during initial open */ 7115 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7116 if (fp == NULL) { 7117 resp->status = NFS4ERR_RESOURCE; 7118 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7119 return; 7120 } 7121 7122 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7123 if (sp == NULL) { 7124 resp->status = NFS4ERR_SERVERFAULT; 7125 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7126 rw_exit(&fp->rf_file_rwlock); 7127 rfs4_file_rele(fp); 7128 return; 7129 } 7130 7131 rfs4_dbe_lock(sp->rs_dbe); 7132 rfs4_dbe_lock(fp->rf_dbe); 7133 if (args->share_access != sp->rs_share_access || 7134 args->share_deny != sp->rs_share_deny || 7135 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7136 NFS4_DEBUG(rfs4_debug, 7137 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7138 rfs4_dbe_unlock(fp->rf_dbe); 7139 rfs4_dbe_unlock(sp->rs_dbe); 7140 rfs4_file_rele(fp); 7141 rfs4_state_rele(sp); 7142 resp->status = NFS4ERR_SERVERFAULT; 7143 return; 7144 } 7145 rfs4_dbe_unlock(fp->rf_dbe); 7146 rfs4_dbe_unlock(sp->rs_dbe); 7147 7148 dsp = rfs4_finddeleg(sp, &dcreate); 7149 if (dsp == NULL) { 7150 rfs4_state_rele(sp); 7151 rfs4_file_rele(fp); 7152 resp->status = NFS4ERR_SERVERFAULT; 7153 return; 7154 } 7155 7156 next_stateid(&sp->rs_stateid); 7157 7158 resp->stateid = sp->rs_stateid.stateid; 7159 7160 resp->delegation.delegation_type = dsp->rds_dtype; 7161 7162 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7163 open_read_delegation4 *rv = 7164 &resp->delegation.open_delegation4_u.read; 7165 7166 rv->stateid = dsp->rds_delegid.stateid; 7167 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7168 ace = &rv->permissions; 7169 } else { 7170 open_write_delegation4 *rv = 7171 &resp->delegation.open_delegation4_u.write; 7172 7173 rv->stateid = dsp->rds_delegid.stateid; 7174 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7175 ace = &rv->permissions; 7176 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7177 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7178 } 7179 7180 /* XXX For now */ 7181 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7182 ace->flag = 0; 7183 ace->access_mask = 0; 7184 ace->who.utf8string_len = 0; 7185 ace->who.utf8string_val = 0; 7186 7187 rfs4_deleg_state_rele(dsp); 7188 rfs4_state_rele(sp); 7189 rfs4_file_rele(fp); 7190 } 7191 7192 typedef enum { 7193 NFS4_CHKSEQ_OKAY = 0, 7194 NFS4_CHKSEQ_REPLAY = 1, 7195 NFS4_CHKSEQ_BAD = 2 7196 } rfs4_chkseq_t; 7197 7198 /* 7199 * Generic function for sequence number checks. 7200 */ 7201 static rfs4_chkseq_t 7202 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7203 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7204 { 7205 /* Same sequence ids and matching operations? */ 7206 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7207 if (copyres == TRUE) { 7208 rfs4_free_reply(resop); 7209 rfs4_copy_reply(resop, lastop); 7210 } 7211 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7212 "Replayed SEQID %d\n", seqid)); 7213 return (NFS4_CHKSEQ_REPLAY); 7214 } 7215 7216 /* If the incoming sequence is not the next expected then it is bad */ 7217 if (rqst_seq != seqid + 1) { 7218 if (rqst_seq == seqid) { 7219 NFS4_DEBUG(rfs4_debug, 7220 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7221 "but last op was %d current op is %d\n", 7222 lastop->resop, resop->resop)); 7223 return (NFS4_CHKSEQ_BAD); 7224 } 7225 NFS4_DEBUG(rfs4_debug, 7226 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7227 rqst_seq, seqid)); 7228 return (NFS4_CHKSEQ_BAD); 7229 } 7230 7231 /* Everything okay -- next expected */ 7232 return (NFS4_CHKSEQ_OKAY); 7233 } 7234 7235 7236 static rfs4_chkseq_t 7237 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7238 { 7239 rfs4_chkseq_t rc; 7240 7241 rfs4_dbe_lock(op->ro_dbe); 7242 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7243 TRUE); 7244 rfs4_dbe_unlock(op->ro_dbe); 7245 7246 if (rc == NFS4_CHKSEQ_OKAY) 7247 rfs4_update_lease(op->ro_client); 7248 7249 return (rc); 7250 } 7251 7252 static rfs4_chkseq_t 7253 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7254 { 7255 rfs4_chkseq_t rc; 7256 7257 rfs4_dbe_lock(op->ro_dbe); 7258 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7259 olo_seqid, resop, FALSE); 7260 rfs4_dbe_unlock(op->ro_dbe); 7261 7262 return (rc); 7263 } 7264 7265 static rfs4_chkseq_t 7266 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7267 { 7268 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7269 7270 rfs4_dbe_lock(lsp->rls_dbe); 7271 if (!lsp->rls_skip_seqid_check) 7272 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7273 resop, TRUE); 7274 rfs4_dbe_unlock(lsp->rls_dbe); 7275 7276 return (rc); 7277 } 7278 7279 static void 7280 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7281 struct svc_req *req, struct compound_state *cs) 7282 { 7283 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7284 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7285 open_owner4 *owner = &args->owner; 7286 open_claim_type4 claim = args->claim; 7287 rfs4_client_t *cp; 7288 rfs4_openowner_t *oo; 7289 bool_t create; 7290 bool_t replay = FALSE; 7291 int can_reclaim; 7292 7293 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7294 OPEN4args *, args); 7295 7296 if (cs->vp == NULL) { 7297 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7298 goto end; 7299 } 7300 7301 /* 7302 * Need to check clientid and lease expiration first based on 7303 * error ordering and incrementing sequence id. 7304 */ 7305 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7306 if (cp == NULL) { 7307 *cs->statusp = resp->status = 7308 rfs4_check_clientid(&owner->clientid, 0); 7309 goto end; 7310 } 7311 7312 if (rfs4_lease_expired(cp)) { 7313 rfs4_client_close(cp); 7314 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7315 goto end; 7316 } 7317 can_reclaim = cp->rc_can_reclaim; 7318 7319 /* 7320 * Find the open_owner for use from this point forward. Take 7321 * care in updating the sequence id based on the type of error 7322 * being returned. 7323 */ 7324 retry: 7325 create = TRUE; 7326 oo = rfs4_findopenowner(owner, &create, args->seqid); 7327 if (oo == NULL) { 7328 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7329 rfs4_client_rele(cp); 7330 goto end; 7331 } 7332 7333 /* Hold off access to the sequence space while the open is done */ 7334 rfs4_sw_enter(&oo->ro_sw); 7335 7336 /* 7337 * If the open_owner existed before at the server, then check 7338 * the sequence id. 7339 */ 7340 if (!create && !oo->ro_postpone_confirm) { 7341 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7342 case NFS4_CHKSEQ_BAD: 7343 if ((args->seqid > oo->ro_open_seqid) && 7344 oo->ro_need_confirm) { 7345 rfs4_free_opens(oo, TRUE, FALSE); 7346 rfs4_sw_exit(&oo->ro_sw); 7347 rfs4_openowner_rele(oo); 7348 goto retry; 7349 } 7350 resp->status = NFS4ERR_BAD_SEQID; 7351 goto out; 7352 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7353 replay = TRUE; 7354 goto out; 7355 default: 7356 break; 7357 } 7358 7359 /* 7360 * Sequence was ok and open owner exists 7361 * check to see if we have yet to see an 7362 * open_confirm. 7363 */ 7364 if (oo->ro_need_confirm) { 7365 rfs4_free_opens(oo, TRUE, FALSE); 7366 rfs4_sw_exit(&oo->ro_sw); 7367 rfs4_openowner_rele(oo); 7368 goto retry; 7369 } 7370 } 7371 /* Grace only applies to regular-type OPENs */ 7372 if (rfs4_clnt_in_grace(cp) && 7373 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7374 *cs->statusp = resp->status = NFS4ERR_GRACE; 7375 goto out; 7376 } 7377 7378 /* 7379 * If previous state at the server existed then can_reclaim 7380 * will be set. If not reply NFS4ERR_NO_GRACE to the 7381 * client. 7382 */ 7383 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7384 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7385 goto out; 7386 } 7387 7388 7389 /* 7390 * Reject the open if the client has missed the grace period 7391 */ 7392 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7393 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7394 goto out; 7395 } 7396 7397 /* Couple of up-front bookkeeping items */ 7398 if (oo->ro_need_confirm) { 7399 /* 7400 * If this is a reclaim OPEN then we should not ask 7401 * for a confirmation of the open_owner per the 7402 * protocol specification. 7403 */ 7404 if (claim == CLAIM_PREVIOUS) 7405 oo->ro_need_confirm = FALSE; 7406 else 7407 resp->rflags |= OPEN4_RESULT_CONFIRM; 7408 } 7409 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7410 7411 /* 7412 * If there is an unshared filesystem mounted on this vnode, 7413 * do not allow to open/create in this directory. 7414 */ 7415 if (vn_ismntpt(cs->vp)) { 7416 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7417 goto out; 7418 } 7419 7420 /* 7421 * access must READ, WRITE, or BOTH. No access is invalid. 7422 * deny can be READ, WRITE, BOTH, or NONE. 7423 * bits not defined for access/deny are invalid. 7424 */ 7425 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7426 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7427 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7428 *cs->statusp = resp->status = NFS4ERR_INVAL; 7429 goto out; 7430 } 7431 7432 7433 /* 7434 * make sure attrset is zero before response is built. 7435 */ 7436 resp->attrset = 0; 7437 7438 switch (claim) { 7439 case CLAIM_NULL: 7440 rfs4_do_opennull(cs, req, args, oo, resp); 7441 break; 7442 case CLAIM_PREVIOUS: 7443 rfs4_do_openprev(cs, req, args, oo, resp); 7444 break; 7445 case CLAIM_DELEGATE_CUR: 7446 rfs4_do_opendelcur(cs, req, args, oo, resp); 7447 break; 7448 case CLAIM_DELEGATE_PREV: 7449 rfs4_do_opendelprev(cs, req, args, oo, resp); 7450 break; 7451 default: 7452 resp->status = NFS4ERR_INVAL; 7453 break; 7454 } 7455 7456 out: 7457 rfs4_client_rele(cp); 7458 7459 /* Catch sequence id handling here to make it a little easier */ 7460 switch (resp->status) { 7461 case NFS4ERR_BADXDR: 7462 case NFS4ERR_BAD_SEQID: 7463 case NFS4ERR_BAD_STATEID: 7464 case NFS4ERR_NOFILEHANDLE: 7465 case NFS4ERR_RESOURCE: 7466 case NFS4ERR_STALE_CLIENTID: 7467 case NFS4ERR_STALE_STATEID: 7468 /* 7469 * The protocol states that if any of these errors are 7470 * being returned, the sequence id should not be 7471 * incremented. Any other return requires an 7472 * increment. 7473 */ 7474 break; 7475 default: 7476 /* Always update the lease in this case */ 7477 rfs4_update_lease(oo->ro_client); 7478 7479 /* Regular response - copy the result */ 7480 if (!replay) 7481 rfs4_update_open_resp(oo, resop, &cs->fh); 7482 7483 /* 7484 * REPLAY case: Only if the previous response was OK 7485 * do we copy the filehandle. If not OK, no 7486 * filehandle to copy. 7487 */ 7488 if (replay == TRUE && 7489 resp->status == NFS4_OK && 7490 oo->ro_reply_fh.nfs_fh4_val) { 7491 /* 7492 * If this is a replay, we must restore the 7493 * current filehandle/vp to that of what was 7494 * returned originally. Try our best to do 7495 * it. 7496 */ 7497 nfs_fh4_fmt_t *fh_fmtp = 7498 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7499 7500 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7501 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7502 7503 if (cs->exi == NULL) { 7504 resp->status = NFS4ERR_STALE; 7505 goto finish; 7506 } 7507 7508 VN_RELE(cs->vp); 7509 7510 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7511 &resp->status); 7512 7513 if (cs->vp == NULL) 7514 goto finish; 7515 7516 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7517 } 7518 7519 /* 7520 * If this was a replay, no need to update the 7521 * sequence id. If the open_owner was not created on 7522 * this pass, then update. The first use of an 7523 * open_owner will not bump the sequence id. 7524 */ 7525 if (replay == FALSE && !create) 7526 rfs4_update_open_sequence(oo); 7527 /* 7528 * If the client is receiving an error and the 7529 * open_owner needs to be confirmed, there is no way 7530 * to notify the client of this fact ignoring the fact 7531 * that the server has no method of returning a 7532 * stateid to confirm. Therefore, the server needs to 7533 * mark this open_owner in a way as to avoid the 7534 * sequence id checking the next time the client uses 7535 * this open_owner. 7536 */ 7537 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7538 oo->ro_postpone_confirm = TRUE; 7539 /* 7540 * If OK response then clear the postpone flag and 7541 * reset the sequence id to keep in sync with the 7542 * client. 7543 */ 7544 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7545 oo->ro_postpone_confirm = FALSE; 7546 oo->ro_open_seqid = args->seqid; 7547 } 7548 break; 7549 } 7550 7551 finish: 7552 *cs->statusp = resp->status; 7553 7554 rfs4_sw_exit(&oo->ro_sw); 7555 rfs4_openowner_rele(oo); 7556 7557 end: 7558 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7559 OPEN4res *, resp); 7560 } 7561 7562 /*ARGSUSED*/ 7563 void 7564 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7565 struct svc_req *req, struct compound_state *cs) 7566 { 7567 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7568 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7569 rfs4_state_t *sp; 7570 nfsstat4 status; 7571 7572 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7573 OPEN_CONFIRM4args *, args); 7574 7575 if (cs->vp == NULL) { 7576 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7577 goto out; 7578 } 7579 7580 if (cs->vp->v_type != VREG) { 7581 *cs->statusp = resp->status = 7582 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7583 return; 7584 } 7585 7586 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7587 if (status != NFS4_OK) { 7588 *cs->statusp = resp->status = status; 7589 goto out; 7590 } 7591 7592 /* Ensure specified filehandle matches */ 7593 if (cs->vp != sp->rs_finfo->rf_vp) { 7594 rfs4_state_rele(sp); 7595 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7596 goto out; 7597 } 7598 7599 /* hold off other access to open_owner while we tinker */ 7600 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7601 7602 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7603 case NFS4_CHECK_STATEID_OKAY: 7604 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7605 resop) != 0) { 7606 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7607 break; 7608 } 7609 /* 7610 * If it is the appropriate stateid and determined to 7611 * be "OKAY" then this means that the stateid does not 7612 * need to be confirmed and the client is in error for 7613 * sending an OPEN_CONFIRM. 7614 */ 7615 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7616 break; 7617 case NFS4_CHECK_STATEID_OLD: 7618 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7619 break; 7620 case NFS4_CHECK_STATEID_BAD: 7621 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7622 break; 7623 case NFS4_CHECK_STATEID_EXPIRED: 7624 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7625 break; 7626 case NFS4_CHECK_STATEID_CLOSED: 7627 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7628 break; 7629 case NFS4_CHECK_STATEID_REPLAY: 7630 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7631 resop)) { 7632 case NFS4_CHKSEQ_OKAY: 7633 /* 7634 * This is replayed stateid; if seqid matches 7635 * next expected, then client is using wrong seqid. 7636 */ 7637 /* fall through */ 7638 case NFS4_CHKSEQ_BAD: 7639 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7640 break; 7641 case NFS4_CHKSEQ_REPLAY: 7642 /* 7643 * Note this case is the duplicate case so 7644 * resp->status is already set. 7645 */ 7646 *cs->statusp = resp->status; 7647 rfs4_update_lease(sp->rs_owner->ro_client); 7648 break; 7649 } 7650 break; 7651 case NFS4_CHECK_STATEID_UNCONFIRMED: 7652 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7653 resop) != NFS4_CHKSEQ_OKAY) { 7654 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7655 break; 7656 } 7657 *cs->statusp = resp->status = NFS4_OK; 7658 7659 next_stateid(&sp->rs_stateid); 7660 resp->open_stateid = sp->rs_stateid.stateid; 7661 sp->rs_owner->ro_need_confirm = FALSE; 7662 rfs4_update_lease(sp->rs_owner->ro_client); 7663 rfs4_update_open_sequence(sp->rs_owner); 7664 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7665 break; 7666 default: 7667 ASSERT(FALSE); 7668 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7669 break; 7670 } 7671 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7672 rfs4_state_rele(sp); 7673 7674 out: 7675 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7676 OPEN_CONFIRM4res *, resp); 7677 } 7678 7679 /*ARGSUSED*/ 7680 void 7681 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7682 struct svc_req *req, struct compound_state *cs) 7683 { 7684 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7685 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7686 uint32_t access = args->share_access; 7687 uint32_t deny = args->share_deny; 7688 nfsstat4 status; 7689 rfs4_state_t *sp; 7690 rfs4_file_t *fp; 7691 int fflags = 0; 7692 7693 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7694 OPEN_DOWNGRADE4args *, args); 7695 7696 if (cs->vp == NULL) { 7697 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7698 goto out; 7699 } 7700 7701 if (cs->vp->v_type != VREG) { 7702 *cs->statusp = resp->status = NFS4ERR_INVAL; 7703 return; 7704 } 7705 7706 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7707 if (status != NFS4_OK) { 7708 *cs->statusp = resp->status = status; 7709 goto out; 7710 } 7711 7712 /* Ensure specified filehandle matches */ 7713 if (cs->vp != sp->rs_finfo->rf_vp) { 7714 rfs4_state_rele(sp); 7715 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7716 goto out; 7717 } 7718 7719 /* hold off other access to open_owner while we tinker */ 7720 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7721 7722 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7723 case NFS4_CHECK_STATEID_OKAY: 7724 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7725 resop) != NFS4_CHKSEQ_OKAY) { 7726 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7727 goto end; 7728 } 7729 break; 7730 case NFS4_CHECK_STATEID_OLD: 7731 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7732 goto end; 7733 case NFS4_CHECK_STATEID_BAD: 7734 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7735 goto end; 7736 case NFS4_CHECK_STATEID_EXPIRED: 7737 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7738 goto end; 7739 case NFS4_CHECK_STATEID_CLOSED: 7740 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7741 goto end; 7742 case NFS4_CHECK_STATEID_UNCONFIRMED: 7743 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7744 goto end; 7745 case NFS4_CHECK_STATEID_REPLAY: 7746 /* Check the sequence id for the open owner */ 7747 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7748 resop)) { 7749 case NFS4_CHKSEQ_OKAY: 7750 /* 7751 * This is replayed stateid; if seqid matches 7752 * next expected, then client is using wrong seqid. 7753 */ 7754 /* fall through */ 7755 case NFS4_CHKSEQ_BAD: 7756 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7757 goto end; 7758 case NFS4_CHKSEQ_REPLAY: 7759 /* 7760 * Note this case is the duplicate case so 7761 * resp->status is already set. 7762 */ 7763 *cs->statusp = resp->status; 7764 rfs4_update_lease(sp->rs_owner->ro_client); 7765 goto end; 7766 } 7767 break; 7768 default: 7769 ASSERT(FALSE); 7770 break; 7771 } 7772 7773 rfs4_dbe_lock(sp->rs_dbe); 7774 /* 7775 * Check that the new access modes and deny modes are valid. 7776 * Check that no invalid bits are set. 7777 */ 7778 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7779 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7780 *cs->statusp = resp->status = NFS4ERR_INVAL; 7781 rfs4_update_open_sequence(sp->rs_owner); 7782 rfs4_dbe_unlock(sp->rs_dbe); 7783 goto end; 7784 } 7785 7786 /* 7787 * The new modes must be a subset of the current modes and 7788 * the access must specify at least one mode. To test that 7789 * the new mode is a subset of the current modes we bitwise 7790 * AND them together and check that the result equals the new 7791 * mode. For example: 7792 * New mode, access == R and current mode, sp->rs_open_access == RW 7793 * access & sp->rs_open_access == R == access, so the new access mode 7794 * is valid. Consider access == RW, sp->rs_open_access = R 7795 * access & sp->rs_open_access == R != access, so the new access mode 7796 * is invalid. 7797 */ 7798 if ((access & sp->rs_open_access) != access || 7799 (deny & sp->rs_open_deny) != deny || 7800 (access & 7801 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7802 *cs->statusp = resp->status = NFS4ERR_INVAL; 7803 rfs4_update_open_sequence(sp->rs_owner); 7804 rfs4_dbe_unlock(sp->rs_dbe); 7805 goto end; 7806 } 7807 7808 /* 7809 * Release any share locks associated with this stateID. 7810 * Strictly speaking, this violates the spec because the 7811 * spec effectively requires that open downgrade be atomic. 7812 * At present, fs_shrlock does not have this capability. 7813 */ 7814 (void) rfs4_unshare(sp); 7815 7816 status = rfs4_share(sp, access, deny); 7817 if (status != NFS4_OK) { 7818 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7819 rfs4_update_open_sequence(sp->rs_owner); 7820 rfs4_dbe_unlock(sp->rs_dbe); 7821 goto end; 7822 } 7823 7824 fp = sp->rs_finfo; 7825 rfs4_dbe_lock(fp->rf_dbe); 7826 7827 /* 7828 * If the current mode has deny read and the new mode 7829 * does not, decrement the number of deny read mode bits 7830 * and if it goes to zero turn off the deny read bit 7831 * on the file. 7832 */ 7833 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7834 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7835 fp->rf_deny_read--; 7836 if (fp->rf_deny_read == 0) 7837 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7838 } 7839 7840 /* 7841 * If the current mode has deny write and the new mode 7842 * does not, decrement the number of deny write mode bits 7843 * and if it goes to zero turn off the deny write bit 7844 * on the file. 7845 */ 7846 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7847 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7848 fp->rf_deny_write--; 7849 if (fp->rf_deny_write == 0) 7850 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7851 } 7852 7853 /* 7854 * If the current mode has access read and the new mode 7855 * does not, decrement the number of access read mode bits 7856 * and if it goes to zero turn off the access read bit 7857 * on the file. set fflags to FREAD for the call to 7858 * vn_open_downgrade(). 7859 */ 7860 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7861 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7862 fp->rf_access_read--; 7863 if (fp->rf_access_read == 0) 7864 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7865 fflags |= FREAD; 7866 } 7867 7868 /* 7869 * If the current mode has access write and the new mode 7870 * does not, decrement the number of access write mode bits 7871 * and if it goes to zero turn off the access write bit 7872 * on the file. set fflags to FWRITE for the call to 7873 * vn_open_downgrade(). 7874 */ 7875 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7876 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7877 fp->rf_access_write--; 7878 if (fp->rf_access_write == 0) 7879 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7880 fflags |= FWRITE; 7881 } 7882 7883 /* Check that the file is still accessible */ 7884 ASSERT(fp->rf_share_access); 7885 7886 rfs4_dbe_unlock(fp->rf_dbe); 7887 7888 /* now set the new open access and deny modes */ 7889 sp->rs_open_access = access; 7890 sp->rs_open_deny = deny; 7891 7892 /* 7893 * we successfully downgraded the share lock, now we need to downgrade 7894 * the open. it is possible that the downgrade was only for a deny 7895 * mode and we have nothing else to do. 7896 */ 7897 if ((fflags & (FREAD|FWRITE)) != 0) 7898 vn_open_downgrade(cs->vp, fflags); 7899 7900 /* Update the stateid */ 7901 next_stateid(&sp->rs_stateid); 7902 resp->open_stateid = sp->rs_stateid.stateid; 7903 7904 rfs4_dbe_unlock(sp->rs_dbe); 7905 7906 *cs->statusp = resp->status = NFS4_OK; 7907 /* Update the lease */ 7908 rfs4_update_lease(sp->rs_owner->ro_client); 7909 /* And the sequence */ 7910 rfs4_update_open_sequence(sp->rs_owner); 7911 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7912 7913 end: 7914 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7915 rfs4_state_rele(sp); 7916 out: 7917 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7918 OPEN_DOWNGRADE4res *, resp); 7919 } 7920 7921 static void * 7922 memstr(const void *s1, const char *s2, size_t n) 7923 { 7924 size_t l = strlen(s2); 7925 char *p = (char *)s1; 7926 7927 while (n >= l) { 7928 if (bcmp(p, s2, l) == 0) 7929 return (p); 7930 p++; 7931 n--; 7932 } 7933 7934 return (NULL); 7935 } 7936 7937 /* 7938 * The logic behind this function is detailed in the NFSv4 RFC in the 7939 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7940 * that section for explicit guidance to server behavior for 7941 * SETCLIENTID. 7942 */ 7943 void 7944 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7945 struct svc_req *req, struct compound_state *cs) 7946 { 7947 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7948 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7949 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7950 rfs4_clntip_t *ci; 7951 bool_t create; 7952 char *addr, *netid; 7953 int len; 7954 7955 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7956 SETCLIENTID4args *, args); 7957 retry: 7958 newcp = cp_confirmed = cp_unconfirmed = NULL; 7959 7960 /* 7961 * Save the caller's IP address 7962 */ 7963 args->client.cl_addr = 7964 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7965 7966 /* 7967 * Record if it is a Solaris client that cannot handle referrals. 7968 */ 7969 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 7970 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 7971 /* Add a "yes, it's downrev" record */ 7972 create = TRUE; 7973 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7974 ASSERT(ci != NULL); 7975 rfs4_dbe_rele(ci->ri_dbe); 7976 } else { 7977 /* Remove any previous record */ 7978 rfs4_invalidate_clntip(args->client.cl_addr); 7979 } 7980 7981 /* 7982 * In search of an EXISTING client matching the incoming 7983 * request to establish a new client identifier at the server 7984 */ 7985 create = TRUE; 7986 cp = rfs4_findclient(&args->client, &create, NULL); 7987 7988 /* Should never happen */ 7989 ASSERT(cp != NULL); 7990 7991 if (cp == NULL) { 7992 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7993 goto out; 7994 } 7995 7996 /* 7997 * Easiest case. Client identifier is newly created and is 7998 * unconfirmed. Also note that for this case, no other 7999 * entries exist for the client identifier. Nothing else to 8000 * check. Just setup the response and respond. 8001 */ 8002 if (create) { 8003 *cs->statusp = res->status = NFS4_OK; 8004 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8005 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8006 cp->rc_confirm_verf; 8007 /* Setup callback information; CB_NULL confirmation later */ 8008 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8009 8010 rfs4_client_rele(cp); 8011 goto out; 8012 } 8013 8014 /* 8015 * An existing, confirmed client may exist but it may not have 8016 * been active for at least one lease period. If so, then 8017 * "close" the client and create a new client identifier 8018 */ 8019 if (rfs4_lease_expired(cp)) { 8020 rfs4_client_close(cp); 8021 goto retry; 8022 } 8023 8024 if (cp->rc_need_confirm == TRUE) 8025 cp_unconfirmed = cp; 8026 else 8027 cp_confirmed = cp; 8028 8029 cp = NULL; 8030 8031 /* 8032 * We have a confirmed client, now check for an 8033 * unconfimred entry 8034 */ 8035 if (cp_confirmed) { 8036 /* If creds don't match then client identifier is inuse */ 8037 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8038 rfs4_cbinfo_t *cbp; 8039 /* 8040 * Some one else has established this client 8041 * id. Try and say * who they are. We will use 8042 * the call back address supplied by * the 8043 * first client. 8044 */ 8045 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8046 8047 addr = netid = NULL; 8048 8049 cbp = &cp_confirmed->rc_cbinfo; 8050 if (cbp->cb_callback.cb_location.r_addr && 8051 cbp->cb_callback.cb_location.r_netid) { 8052 cb_client4 *cbcp = &cbp->cb_callback; 8053 8054 len = strlen(cbcp->cb_location.r_addr)+1; 8055 addr = kmem_alloc(len, KM_SLEEP); 8056 bcopy(cbcp->cb_location.r_addr, addr, len); 8057 len = strlen(cbcp->cb_location.r_netid)+1; 8058 netid = kmem_alloc(len, KM_SLEEP); 8059 bcopy(cbcp->cb_location.r_netid, netid, len); 8060 } 8061 8062 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8063 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8064 8065 rfs4_client_rele(cp_confirmed); 8066 } 8067 8068 /* 8069 * Confirmed, creds match, and verifier matches; must 8070 * be an update of the callback info 8071 */ 8072 if (cp_confirmed->rc_nfs_client.verifier == 8073 args->client.verifier) { 8074 /* Setup callback information */ 8075 rfs4_client_setcb(cp_confirmed, &args->callback, 8076 args->callback_ident); 8077 8078 /* everything okay -- move ahead */ 8079 *cs->statusp = res->status = NFS4_OK; 8080 res->SETCLIENTID4res_u.resok4.clientid = 8081 cp_confirmed->rc_clientid; 8082 8083 /* update the confirm_verifier and return it */ 8084 rfs4_client_scv_next(cp_confirmed); 8085 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8086 cp_confirmed->rc_confirm_verf; 8087 8088 rfs4_client_rele(cp_confirmed); 8089 goto out; 8090 } 8091 8092 /* 8093 * Creds match but the verifier doesn't. Must search 8094 * for an unconfirmed client that would be replaced by 8095 * this request. 8096 */ 8097 create = FALSE; 8098 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8099 cp_confirmed); 8100 } 8101 8102 /* 8103 * At this point, we have taken care of the brand new client 8104 * struct, INUSE case, update of an existing, and confirmed 8105 * client struct. 8106 */ 8107 8108 /* 8109 * check to see if things have changed while we originally 8110 * picked up the client struct. If they have, then return and 8111 * retry the processing of this SETCLIENTID request. 8112 */ 8113 if (cp_unconfirmed) { 8114 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8115 if (!cp_unconfirmed->rc_need_confirm) { 8116 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8117 rfs4_client_rele(cp_unconfirmed); 8118 if (cp_confirmed) 8119 rfs4_client_rele(cp_confirmed); 8120 goto retry; 8121 } 8122 /* do away with the old unconfirmed one */ 8123 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8124 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8125 rfs4_client_rele(cp_unconfirmed); 8126 cp_unconfirmed = NULL; 8127 } 8128 8129 /* 8130 * This search will temporarily hide the confirmed client 8131 * struct while a new client struct is created as the 8132 * unconfirmed one. 8133 */ 8134 create = TRUE; 8135 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8136 8137 ASSERT(newcp != NULL); 8138 8139 if (newcp == NULL) { 8140 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8141 rfs4_client_rele(cp_confirmed); 8142 goto out; 8143 } 8144 8145 /* 8146 * If one was not created, then a similar request must be in 8147 * process so release and start over with this one 8148 */ 8149 if (create != TRUE) { 8150 rfs4_client_rele(newcp); 8151 if (cp_confirmed) 8152 rfs4_client_rele(cp_confirmed); 8153 goto retry; 8154 } 8155 8156 *cs->statusp = res->status = NFS4_OK; 8157 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8158 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8159 newcp->rc_confirm_verf; 8160 /* Setup callback information; CB_NULL confirmation later */ 8161 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8162 8163 newcp->rc_cp_confirmed = cp_confirmed; 8164 8165 rfs4_client_rele(newcp); 8166 8167 out: 8168 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8169 SETCLIENTID4res *, res); 8170 } 8171 8172 /*ARGSUSED*/ 8173 void 8174 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8175 struct svc_req *req, struct compound_state *cs) 8176 { 8177 SETCLIENTID_CONFIRM4args *args = 8178 &argop->nfs_argop4_u.opsetclientid_confirm; 8179 SETCLIENTID_CONFIRM4res *res = 8180 &resop->nfs_resop4_u.opsetclientid_confirm; 8181 rfs4_client_t *cp, *cptoclose = NULL; 8182 8183 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8184 struct compound_state *, cs, 8185 SETCLIENTID_CONFIRM4args *, args); 8186 8187 *cs->statusp = res->status = NFS4_OK; 8188 8189 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8190 8191 if (cp == NULL) { 8192 *cs->statusp = res->status = 8193 rfs4_check_clientid(&args->clientid, 1); 8194 goto out; 8195 } 8196 8197 if (!creds_ok(cp, req, cs)) { 8198 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8199 rfs4_client_rele(cp); 8200 goto out; 8201 } 8202 8203 /* If the verifier doesn't match, the record doesn't match */ 8204 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8205 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8206 rfs4_client_rele(cp); 8207 goto out; 8208 } 8209 8210 rfs4_dbe_lock(cp->rc_dbe); 8211 cp->rc_need_confirm = FALSE; 8212 if (cp->rc_cp_confirmed) { 8213 cptoclose = cp->rc_cp_confirmed; 8214 cptoclose->rc_ss_remove = 1; 8215 cp->rc_cp_confirmed = NULL; 8216 } 8217 8218 /* 8219 * Update the client's associated server instance, if it's changed 8220 * since the client was created. 8221 */ 8222 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8223 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8224 8225 /* 8226 * Record clientid in stable storage. 8227 * Must be done after server instance has been assigned. 8228 */ 8229 rfs4_ss_clid(cp); 8230 8231 rfs4_dbe_unlock(cp->rc_dbe); 8232 8233 if (cptoclose) 8234 /* don't need to rele, client_close does it */ 8235 rfs4_client_close(cptoclose); 8236 8237 /* If needed, initiate CB_NULL call for callback path */ 8238 rfs4_deleg_cb_check(cp); 8239 rfs4_update_lease(cp); 8240 8241 /* 8242 * Check to see if client can perform reclaims 8243 */ 8244 rfs4_ss_chkclid(cp); 8245 8246 rfs4_client_rele(cp); 8247 8248 out: 8249 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8250 struct compound_state *, cs, 8251 SETCLIENTID_CONFIRM4 *, res); 8252 } 8253 8254 8255 /*ARGSUSED*/ 8256 void 8257 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8258 struct svc_req *req, struct compound_state *cs) 8259 { 8260 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8261 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8262 rfs4_state_t *sp; 8263 nfsstat4 status; 8264 8265 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8266 CLOSE4args *, args); 8267 8268 if (cs->vp == NULL) { 8269 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8270 goto out; 8271 } 8272 8273 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8274 if (status != NFS4_OK) { 8275 *cs->statusp = resp->status = status; 8276 goto out; 8277 } 8278 8279 /* Ensure specified filehandle matches */ 8280 if (cs->vp != sp->rs_finfo->rf_vp) { 8281 rfs4_state_rele(sp); 8282 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8283 goto out; 8284 } 8285 8286 /* hold off other access to open_owner while we tinker */ 8287 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8288 8289 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8290 case NFS4_CHECK_STATEID_OKAY: 8291 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8292 resop) != NFS4_CHKSEQ_OKAY) { 8293 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8294 goto end; 8295 } 8296 break; 8297 case NFS4_CHECK_STATEID_OLD: 8298 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8299 goto end; 8300 case NFS4_CHECK_STATEID_BAD: 8301 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8302 goto end; 8303 case NFS4_CHECK_STATEID_EXPIRED: 8304 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8305 goto end; 8306 case NFS4_CHECK_STATEID_CLOSED: 8307 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8308 goto end; 8309 case NFS4_CHECK_STATEID_UNCONFIRMED: 8310 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8311 goto end; 8312 case NFS4_CHECK_STATEID_REPLAY: 8313 /* Check the sequence id for the open owner */ 8314 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8315 resop)) { 8316 case NFS4_CHKSEQ_OKAY: 8317 /* 8318 * This is replayed stateid; if seqid matches 8319 * next expected, then client is using wrong seqid. 8320 */ 8321 /* FALL THROUGH */ 8322 case NFS4_CHKSEQ_BAD: 8323 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8324 goto end; 8325 case NFS4_CHKSEQ_REPLAY: 8326 /* 8327 * Note this case is the duplicate case so 8328 * resp->status is already set. 8329 */ 8330 *cs->statusp = resp->status; 8331 rfs4_update_lease(sp->rs_owner->ro_client); 8332 goto end; 8333 } 8334 break; 8335 default: 8336 ASSERT(FALSE); 8337 break; 8338 } 8339 8340 rfs4_dbe_lock(sp->rs_dbe); 8341 8342 /* Update the stateid. */ 8343 next_stateid(&sp->rs_stateid); 8344 resp->open_stateid = sp->rs_stateid.stateid; 8345 8346 rfs4_dbe_unlock(sp->rs_dbe); 8347 8348 rfs4_update_lease(sp->rs_owner->ro_client); 8349 rfs4_update_open_sequence(sp->rs_owner); 8350 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8351 8352 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8353 8354 *cs->statusp = resp->status = status; 8355 8356 end: 8357 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8358 rfs4_state_rele(sp); 8359 out: 8360 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8361 CLOSE4res *, resp); 8362 } 8363 8364 /* 8365 * Manage the counts on the file struct and close all file locks 8366 */ 8367 /*ARGSUSED*/ 8368 void 8369 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8370 bool_t close_of_client) 8371 { 8372 rfs4_file_t *fp = sp->rs_finfo; 8373 rfs4_lo_state_t *lsp; 8374 int fflags = 0; 8375 8376 /* 8377 * If this call is part of the larger closing down of client 8378 * state then it is just easier to release all locks 8379 * associated with this client instead of going through each 8380 * individual file and cleaning locks there. 8381 */ 8382 if (close_of_client) { 8383 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8384 !list_is_empty(&sp->rs_lostatelist) && 8385 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8386 /* Is the PxFS kernel module loaded? */ 8387 if (lm_remove_file_locks != NULL) { 8388 int new_sysid; 8389 8390 /* Encode the cluster nodeid in new sysid */ 8391 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8392 lm_set_nlmid_flk(&new_sysid); 8393 8394 /* 8395 * This PxFS routine removes file locks for a 8396 * client over all nodes of a cluster. 8397 */ 8398 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8399 "lm_remove_file_locks(sysid=0x%x)\n", 8400 new_sysid)); 8401 (*lm_remove_file_locks)(new_sysid); 8402 } else { 8403 struct flock64 flk; 8404 8405 /* Release all locks for this client */ 8406 flk.l_type = F_UNLKSYS; 8407 flk.l_whence = 0; 8408 flk.l_start = 0; 8409 flk.l_len = 0; 8410 flk.l_sysid = 8411 sp->rs_owner->ro_client->rc_sysidt; 8412 flk.l_pid = 0; 8413 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8414 &flk, F_REMOTELOCK | FREAD | FWRITE, 8415 (u_offset_t)0, NULL, CRED(), NULL); 8416 } 8417 8418 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8419 } 8420 } 8421 8422 /* 8423 * Release all locks on this file by this lock owner or at 8424 * least mark the locks as having been released 8425 */ 8426 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8427 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8428 lsp->rls_locks_cleaned = TRUE; 8429 8430 /* Was this already taken care of above? */ 8431 if (!close_of_client && 8432 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8433 (void) cleanlocks(sp->rs_finfo->rf_vp, 8434 lsp->rls_locker->rl_pid, 8435 lsp->rls_locker->rl_client->rc_sysidt); 8436 } 8437 8438 /* 8439 * Release any shrlocks associated with this open state ID. 8440 * This must be done before the rfs4_state gets marked closed. 8441 */ 8442 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8443 (void) rfs4_unshare(sp); 8444 8445 if (sp->rs_open_access) { 8446 rfs4_dbe_lock(fp->rf_dbe); 8447 8448 /* 8449 * Decrement the count for each access and deny bit that this 8450 * state has contributed to the file. 8451 * If the file counts go to zero 8452 * clear the appropriate bit in the appropriate mask. 8453 */ 8454 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8455 fp->rf_access_read--; 8456 fflags |= FREAD; 8457 if (fp->rf_access_read == 0) 8458 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8459 } 8460 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8461 fp->rf_access_write--; 8462 fflags |= FWRITE; 8463 if (fp->rf_access_write == 0) 8464 fp->rf_share_access &= 8465 ~OPEN4_SHARE_ACCESS_WRITE; 8466 } 8467 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8468 fp->rf_deny_read--; 8469 if (fp->rf_deny_read == 0) 8470 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8471 } 8472 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8473 fp->rf_deny_write--; 8474 if (fp->rf_deny_write == 0) 8475 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8476 } 8477 8478 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8479 8480 rfs4_dbe_unlock(fp->rf_dbe); 8481 8482 sp->rs_open_access = 0; 8483 sp->rs_open_deny = 0; 8484 } 8485 } 8486 8487 /* 8488 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8489 */ 8490 static nfsstat4 8491 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8492 { 8493 rfs4_lockowner_t *lo; 8494 rfs4_client_t *cp; 8495 uint32_t len; 8496 8497 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8498 if (lo != NULL) { 8499 cp = lo->rl_client; 8500 if (rfs4_lease_expired(cp)) { 8501 rfs4_lockowner_rele(lo); 8502 rfs4_dbe_hold(cp->rc_dbe); 8503 rfs4_client_close(cp); 8504 return (NFS4ERR_EXPIRED); 8505 } 8506 dp->owner.clientid = lo->rl_owner.clientid; 8507 len = lo->rl_owner.owner_len; 8508 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8509 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8510 dp->owner.owner_len = len; 8511 rfs4_lockowner_rele(lo); 8512 goto finish; 8513 } 8514 8515 /* 8516 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8517 * of the client id contain the boot time for a NFS4 lock. So we 8518 * fabricate and identity by setting clientid to the sysid, and 8519 * the lock owner to the pid. 8520 */ 8521 dp->owner.clientid = flk->l_sysid; 8522 len = sizeof (pid_t); 8523 dp->owner.owner_len = len; 8524 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8525 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8526 finish: 8527 dp->offset = flk->l_start; 8528 dp->length = flk->l_len; 8529 8530 if (flk->l_type == F_RDLCK) 8531 dp->locktype = READ_LT; 8532 else if (flk->l_type == F_WRLCK) 8533 dp->locktype = WRITE_LT; 8534 else 8535 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8536 8537 return (NFS4_OK); 8538 } 8539 8540 /* 8541 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8542 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8543 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8544 * for that (obviously); they are sending the LOCK requests with some delays 8545 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8546 * locking and delay implementation at the client side. 8547 * 8548 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8549 * fast retries on its own (the for loop below) in a hope the lock will be 8550 * available soon. And if not, the client won't need to resend the LOCK 8551 * requests so fast to check the lock availability. This basically saves some 8552 * network traffic and tries to make sure the client gets the lock ASAP. 8553 */ 8554 static int 8555 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8556 { 8557 int error; 8558 struct flock64 flk; 8559 int i; 8560 clock_t delaytime; 8561 int cmd; 8562 int spin_cnt = 0; 8563 8564 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8565 retry: 8566 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8567 8568 for (i = 0; i < rfs4_maxlock_tries; i++) { 8569 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8570 error = VOP_FRLOCK(vp, cmd, 8571 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8572 8573 if (error != EAGAIN && error != EACCES) 8574 break; 8575 8576 if (i < rfs4_maxlock_tries - 1) { 8577 delay(delaytime); 8578 delaytime *= 2; 8579 } 8580 } 8581 8582 if (error == EAGAIN || error == EACCES) { 8583 /* Get the owner of the lock */ 8584 flk = *flock; 8585 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8586 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8587 NULL) == 0) { 8588 /* 8589 * There's a race inherent in the current VOP_FRLOCK 8590 * design where: 8591 * a: "other guy" takes a lock that conflicts with a 8592 * lock we want 8593 * b: we attempt to take our lock (non-blocking) and 8594 * the attempt fails. 8595 * c: "other guy" releases the conflicting lock 8596 * d: we ask what lock conflicts with the lock we want, 8597 * getting F_UNLCK (no lock blocks us) 8598 * 8599 * If we retry the non-blocking lock attempt in this 8600 * case (restart at step 'b') there's some possibility 8601 * that many such attempts might fail. However a test 8602 * designed to actually provoke this race shows that 8603 * the vast majority of cases require no retry, and 8604 * only a few took as many as three retries. Here's 8605 * the test outcome: 8606 * 8607 * number of retries how many times we needed 8608 * that many retries 8609 * 0 79461 8610 * 1 862 8611 * 2 49 8612 * 3 5 8613 * 8614 * Given those empirical results, we arbitrarily limit 8615 * the retry count to ten. 8616 * 8617 * If we actually make to ten retries and give up, 8618 * nothing catastrophic happens, but we're unable to 8619 * return the information about the conflicting lock to 8620 * the NFS client. That's an acceptable trade off vs. 8621 * letting this retry loop run forever. 8622 */ 8623 if (flk.l_type == F_UNLCK) { 8624 if (spin_cnt++ < 10) { 8625 /* No longer locked, retry */ 8626 goto retry; 8627 } 8628 } else { 8629 *flock = flk; 8630 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8631 F_GETLK, &flk); 8632 } 8633 } 8634 } 8635 8636 return (error); 8637 } 8638 8639 /*ARGSUSED*/ 8640 static nfsstat4 8641 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8642 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8643 { 8644 nfsstat4 status; 8645 rfs4_lockowner_t *lo = lsp->rls_locker; 8646 rfs4_state_t *sp = lsp->rls_state; 8647 struct flock64 flock; 8648 int16_t ltype; 8649 int flag; 8650 int error; 8651 sysid_t sysid; 8652 LOCK4res *lres; 8653 vnode_t *vp; 8654 8655 if (rfs4_lease_expired(lo->rl_client)) { 8656 return (NFS4ERR_EXPIRED); 8657 } 8658 8659 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8660 return (status); 8661 8662 /* Check for zero length. To lock to end of file use all ones for V4 */ 8663 if (length == 0) 8664 return (NFS4ERR_INVAL); 8665 else if (length == (length4)(~0)) 8666 length = 0; /* Posix to end of file */ 8667 8668 retry: 8669 rfs4_dbe_lock(sp->rs_dbe); 8670 if (sp->rs_closed == TRUE) { 8671 rfs4_dbe_unlock(sp->rs_dbe); 8672 return (NFS4ERR_OLD_STATEID); 8673 } 8674 8675 if (resop->resop != OP_LOCKU) { 8676 switch (locktype) { 8677 case READ_LT: 8678 case READW_LT: 8679 if ((sp->rs_share_access 8680 & OPEN4_SHARE_ACCESS_READ) == 0) { 8681 rfs4_dbe_unlock(sp->rs_dbe); 8682 8683 return (NFS4ERR_OPENMODE); 8684 } 8685 ltype = F_RDLCK; 8686 break; 8687 case WRITE_LT: 8688 case WRITEW_LT: 8689 if ((sp->rs_share_access 8690 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8691 rfs4_dbe_unlock(sp->rs_dbe); 8692 8693 return (NFS4ERR_OPENMODE); 8694 } 8695 ltype = F_WRLCK; 8696 break; 8697 } 8698 } else 8699 ltype = F_UNLCK; 8700 8701 flock.l_type = ltype; 8702 flock.l_whence = 0; /* SEEK_SET */ 8703 flock.l_start = offset; 8704 flock.l_len = length; 8705 flock.l_sysid = sysid; 8706 flock.l_pid = lsp->rls_locker->rl_pid; 8707 8708 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8709 if (flock.l_len < 0 || flock.l_start < 0) { 8710 rfs4_dbe_unlock(sp->rs_dbe); 8711 return (NFS4ERR_INVAL); 8712 } 8713 8714 /* 8715 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8716 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8717 */ 8718 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8719 8720 vp = sp->rs_finfo->rf_vp; 8721 VN_HOLD(vp); 8722 8723 /* 8724 * We need to unlock sp before we call the underlying filesystem to 8725 * acquire the file lock. 8726 */ 8727 rfs4_dbe_unlock(sp->rs_dbe); 8728 8729 error = setlock(vp, &flock, flag, cred); 8730 8731 /* 8732 * Make sure the file is still open. In a case the file was closed in 8733 * the meantime, clean the lock we acquired using the setlock() call 8734 * above, and return the appropriate error. 8735 */ 8736 rfs4_dbe_lock(sp->rs_dbe); 8737 if (sp->rs_closed == TRUE) { 8738 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 8739 rfs4_dbe_unlock(sp->rs_dbe); 8740 8741 VN_RELE(vp); 8742 8743 return (NFS4ERR_OLD_STATEID); 8744 } 8745 rfs4_dbe_unlock(sp->rs_dbe); 8746 8747 VN_RELE(vp); 8748 8749 if (error == 0) { 8750 rfs4_dbe_lock(lsp->rls_dbe); 8751 next_stateid(&lsp->rls_lockid); 8752 rfs4_dbe_unlock(lsp->rls_dbe); 8753 } 8754 8755 /* 8756 * N.B. We map error values to nfsv4 errors. This is differrent 8757 * than puterrno4 routine. 8758 */ 8759 switch (error) { 8760 case 0: 8761 status = NFS4_OK; 8762 break; 8763 case EAGAIN: 8764 case EACCES: /* Old value */ 8765 /* Can only get here if op is OP_LOCK */ 8766 ASSERT(resop->resop == OP_LOCK); 8767 lres = &resop->nfs_resop4_u.oplock; 8768 status = NFS4ERR_DENIED; 8769 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8770 == NFS4ERR_EXPIRED) 8771 goto retry; 8772 break; 8773 case ENOLCK: 8774 status = NFS4ERR_DELAY; 8775 break; 8776 case EOVERFLOW: 8777 status = NFS4ERR_INVAL; 8778 break; 8779 case EINVAL: 8780 status = NFS4ERR_NOTSUPP; 8781 break; 8782 default: 8783 status = NFS4ERR_SERVERFAULT; 8784 break; 8785 } 8786 8787 return (status); 8788 } 8789 8790 /*ARGSUSED*/ 8791 void 8792 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8793 struct svc_req *req, struct compound_state *cs) 8794 { 8795 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8796 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8797 nfsstat4 status; 8798 stateid4 *stateid; 8799 rfs4_lockowner_t *lo; 8800 rfs4_client_t *cp; 8801 rfs4_state_t *sp = NULL; 8802 rfs4_lo_state_t *lsp = NULL; 8803 bool_t ls_sw_held = FALSE; 8804 bool_t create = TRUE; 8805 bool_t lcreate = TRUE; 8806 bool_t dup_lock = FALSE; 8807 int rc; 8808 8809 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8810 LOCK4args *, args); 8811 8812 if (cs->vp == NULL) { 8813 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8814 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8815 cs, LOCK4res *, resp); 8816 return; 8817 } 8818 8819 if (args->locker.new_lock_owner) { 8820 /* Create a new lockowner for this instance */ 8821 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8822 8823 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8824 8825 stateid = &olo->open_stateid; 8826 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8827 if (status != NFS4_OK) { 8828 NFS4_DEBUG(rfs4_debug, 8829 (CE_NOTE, "Get state failed in lock %d", status)); 8830 *cs->statusp = resp->status = status; 8831 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8832 cs, LOCK4res *, resp); 8833 return; 8834 } 8835 8836 /* Ensure specified filehandle matches */ 8837 if (cs->vp != sp->rs_finfo->rf_vp) { 8838 rfs4_state_rele(sp); 8839 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8840 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8841 cs, LOCK4res *, resp); 8842 return; 8843 } 8844 8845 /* hold off other access to open_owner while we tinker */ 8846 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8847 8848 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8849 case NFS4_CHECK_STATEID_OLD: 8850 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8851 goto end; 8852 case NFS4_CHECK_STATEID_BAD: 8853 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8854 goto end; 8855 case NFS4_CHECK_STATEID_EXPIRED: 8856 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8857 goto end; 8858 case NFS4_CHECK_STATEID_UNCONFIRMED: 8859 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8860 goto end; 8861 case NFS4_CHECK_STATEID_CLOSED: 8862 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8863 goto end; 8864 case NFS4_CHECK_STATEID_OKAY: 8865 case NFS4_CHECK_STATEID_REPLAY: 8866 switch (rfs4_check_olo_seqid(olo->open_seqid, 8867 sp->rs_owner, resop)) { 8868 case NFS4_CHKSEQ_OKAY: 8869 if (rc == NFS4_CHECK_STATEID_OKAY) 8870 break; 8871 /* 8872 * This is replayed stateid; if seqid 8873 * matches next expected, then client 8874 * is using wrong seqid. 8875 */ 8876 /* FALLTHROUGH */ 8877 case NFS4_CHKSEQ_BAD: 8878 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8879 goto end; 8880 case NFS4_CHKSEQ_REPLAY: 8881 /* This is a duplicate LOCK request */ 8882 dup_lock = TRUE; 8883 8884 /* 8885 * For a duplicate we do not want to 8886 * create a new lockowner as it should 8887 * already exist. 8888 * Turn off the lockowner create flag. 8889 */ 8890 lcreate = FALSE; 8891 } 8892 break; 8893 } 8894 8895 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8896 if (lo == NULL) { 8897 NFS4_DEBUG(rfs4_debug, 8898 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8899 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8900 goto end; 8901 } 8902 8903 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8904 if (lsp == NULL) { 8905 rfs4_update_lease(sp->rs_owner->ro_client); 8906 /* 8907 * Only update theh open_seqid if this is not 8908 * a duplicate request 8909 */ 8910 if (dup_lock == FALSE) { 8911 rfs4_update_open_sequence(sp->rs_owner); 8912 } 8913 8914 NFS4_DEBUG(rfs4_debug, 8915 (CE_NOTE, "rfs4_op_lock: no state")); 8916 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8917 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8918 rfs4_lockowner_rele(lo); 8919 goto end; 8920 } 8921 8922 /* 8923 * This is the new_lock_owner branch and the client is 8924 * supposed to be associating a new lock_owner with 8925 * the open file at this point. If we find that a 8926 * lock_owner/state association already exists and a 8927 * successful LOCK request was returned to the client, 8928 * an error is returned to the client since this is 8929 * not appropriate. The client should be using the 8930 * existing lock_owner branch. 8931 */ 8932 if (dup_lock == FALSE && create == FALSE) { 8933 if (lsp->rls_lock_completed == TRUE) { 8934 *cs->statusp = 8935 resp->status = NFS4ERR_BAD_SEQID; 8936 rfs4_lockowner_rele(lo); 8937 goto end; 8938 } 8939 } 8940 8941 rfs4_update_lease(sp->rs_owner->ro_client); 8942 8943 /* 8944 * Only update theh open_seqid if this is not 8945 * a duplicate request 8946 */ 8947 if (dup_lock == FALSE) { 8948 rfs4_update_open_sequence(sp->rs_owner); 8949 } 8950 8951 /* 8952 * If this is a duplicate lock request, just copy the 8953 * previously saved reply and return. 8954 */ 8955 if (dup_lock == TRUE) { 8956 /* verify that lock_seqid's match */ 8957 if (lsp->rls_seqid != olo->lock_seqid) { 8958 NFS4_DEBUG(rfs4_debug, 8959 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8960 "lsp->seqid=%d old->seqid=%d", 8961 lsp->rls_seqid, olo->lock_seqid)); 8962 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8963 } else { 8964 rfs4_copy_reply(resop, &lsp->rls_reply); 8965 /* 8966 * Make sure to copy the just 8967 * retrieved reply status into the 8968 * overall compound status 8969 */ 8970 *cs->statusp = resp->status; 8971 } 8972 rfs4_lockowner_rele(lo); 8973 goto end; 8974 } 8975 8976 rfs4_dbe_lock(lsp->rls_dbe); 8977 8978 /* Make sure to update the lock sequence id */ 8979 lsp->rls_seqid = olo->lock_seqid; 8980 8981 NFS4_DEBUG(rfs4_debug, 8982 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8983 8984 /* 8985 * This is used to signify the newly created lockowner 8986 * stateid and its sequence number. The checks for 8987 * sequence number and increment don't occur on the 8988 * very first lock request for a lockowner. 8989 */ 8990 lsp->rls_skip_seqid_check = TRUE; 8991 8992 /* hold off other access to lsp while we tinker */ 8993 rfs4_sw_enter(&lsp->rls_sw); 8994 ls_sw_held = TRUE; 8995 8996 rfs4_dbe_unlock(lsp->rls_dbe); 8997 8998 rfs4_lockowner_rele(lo); 8999 } else { 9000 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9001 /* get lsp and hold the lock on the underlying file struct */ 9002 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9003 != NFS4_OK) { 9004 *cs->statusp = resp->status = status; 9005 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9006 cs, LOCK4res *, resp); 9007 return; 9008 } 9009 create = FALSE; /* We didn't create lsp */ 9010 9011 /* Ensure specified filehandle matches */ 9012 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9013 rfs4_lo_state_rele(lsp, TRUE); 9014 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9015 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9016 cs, LOCK4res *, resp); 9017 return; 9018 } 9019 9020 /* hold off other access to lsp while we tinker */ 9021 rfs4_sw_enter(&lsp->rls_sw); 9022 ls_sw_held = TRUE; 9023 9024 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9025 /* 9026 * The stateid looks like it was okay (expected to be 9027 * the next one) 9028 */ 9029 case NFS4_CHECK_STATEID_OKAY: 9030 /* 9031 * The sequence id is now checked. Determine 9032 * if this is a replay or if it is in the 9033 * expected (next) sequence. In the case of a 9034 * replay, there are two replay conditions 9035 * that may occur. The first is the normal 9036 * condition where a LOCK is done with a 9037 * NFS4_OK response and the stateid is 9038 * updated. That case is handled below when 9039 * the stateid is identified as a REPLAY. The 9040 * second is the case where an error is 9041 * returned, like NFS4ERR_DENIED, and the 9042 * sequence number is updated but the stateid 9043 * is not updated. This second case is dealt 9044 * with here. So it may seem odd that the 9045 * stateid is okay but the sequence id is a 9046 * replay but it is okay. 9047 */ 9048 switch (rfs4_check_lock_seqid( 9049 args->locker.locker4_u.lock_owner.lock_seqid, 9050 lsp, resop)) { 9051 case NFS4_CHKSEQ_REPLAY: 9052 if (resp->status != NFS4_OK) { 9053 /* 9054 * Here is our replay and need 9055 * to verify that the last 9056 * response was an error. 9057 */ 9058 *cs->statusp = resp->status; 9059 goto end; 9060 } 9061 /* 9062 * This is done since the sequence id 9063 * looked like a replay but it didn't 9064 * pass our check so a BAD_SEQID is 9065 * returned as a result. 9066 */ 9067 /*FALLTHROUGH*/ 9068 case NFS4_CHKSEQ_BAD: 9069 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9070 goto end; 9071 case NFS4_CHKSEQ_OKAY: 9072 /* Everything looks okay move ahead */ 9073 break; 9074 } 9075 break; 9076 case NFS4_CHECK_STATEID_OLD: 9077 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9078 goto end; 9079 case NFS4_CHECK_STATEID_BAD: 9080 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9081 goto end; 9082 case NFS4_CHECK_STATEID_EXPIRED: 9083 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9084 goto end; 9085 case NFS4_CHECK_STATEID_CLOSED: 9086 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9087 goto end; 9088 case NFS4_CHECK_STATEID_REPLAY: 9089 switch (rfs4_check_lock_seqid( 9090 args->locker.locker4_u.lock_owner.lock_seqid, 9091 lsp, resop)) { 9092 case NFS4_CHKSEQ_OKAY: 9093 /* 9094 * This is a replayed stateid; if 9095 * seqid matches the next expected, 9096 * then client is using wrong seqid. 9097 */ 9098 case NFS4_CHKSEQ_BAD: 9099 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9100 goto end; 9101 case NFS4_CHKSEQ_REPLAY: 9102 rfs4_update_lease(lsp->rls_locker->rl_client); 9103 *cs->statusp = status = resp->status; 9104 goto end; 9105 } 9106 break; 9107 default: 9108 ASSERT(FALSE); 9109 break; 9110 } 9111 9112 rfs4_update_lock_sequence(lsp); 9113 rfs4_update_lease(lsp->rls_locker->rl_client); 9114 } 9115 9116 /* 9117 * NFS4 only allows locking on regular files, so 9118 * verify type of object. 9119 */ 9120 if (cs->vp->v_type != VREG) { 9121 if (cs->vp->v_type == VDIR) 9122 status = NFS4ERR_ISDIR; 9123 else 9124 status = NFS4ERR_INVAL; 9125 goto out; 9126 } 9127 9128 cp = lsp->rls_state->rs_owner->ro_client; 9129 9130 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9131 status = NFS4ERR_GRACE; 9132 goto out; 9133 } 9134 9135 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9136 status = NFS4ERR_NO_GRACE; 9137 goto out; 9138 } 9139 9140 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9141 status = NFS4ERR_NO_GRACE; 9142 goto out; 9143 } 9144 9145 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9146 cs->deleg = TRUE; 9147 9148 status = rfs4_do_lock(lsp, args->locktype, 9149 args->offset, args->length, cs->cr, resop); 9150 9151 out: 9152 lsp->rls_skip_seqid_check = FALSE; 9153 9154 *cs->statusp = resp->status = status; 9155 9156 if (status == NFS4_OK) { 9157 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9158 lsp->rls_lock_completed = TRUE; 9159 } 9160 /* 9161 * Only update the "OPEN" response here if this was a new 9162 * lock_owner 9163 */ 9164 if (sp) 9165 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9166 9167 rfs4_update_lock_resp(lsp, resop); 9168 9169 end: 9170 if (lsp) { 9171 if (ls_sw_held) 9172 rfs4_sw_exit(&lsp->rls_sw); 9173 /* 9174 * If an sp obtained, then the lsp does not represent 9175 * a lock on the file struct. 9176 */ 9177 if (sp != NULL) 9178 rfs4_lo_state_rele(lsp, FALSE); 9179 else 9180 rfs4_lo_state_rele(lsp, TRUE); 9181 } 9182 if (sp) { 9183 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9184 rfs4_state_rele(sp); 9185 } 9186 9187 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9188 LOCK4res *, resp); 9189 } 9190 9191 /* free function for LOCK/LOCKT */ 9192 static void 9193 lock_denied_free(nfs_resop4 *resop) 9194 { 9195 LOCK4denied *dp = NULL; 9196 9197 switch (resop->resop) { 9198 case OP_LOCK: 9199 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9200 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9201 break; 9202 case OP_LOCKT: 9203 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9204 dp = &resop->nfs_resop4_u.oplockt.denied; 9205 break; 9206 default: 9207 break; 9208 } 9209 9210 if (dp) 9211 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9212 } 9213 9214 /*ARGSUSED*/ 9215 void 9216 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9217 struct svc_req *req, struct compound_state *cs) 9218 { 9219 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9220 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9221 nfsstat4 status; 9222 stateid4 *stateid = &args->lock_stateid; 9223 rfs4_lo_state_t *lsp; 9224 9225 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9226 LOCKU4args *, args); 9227 9228 if (cs->vp == NULL) { 9229 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9230 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9231 LOCKU4res *, resp); 9232 return; 9233 } 9234 9235 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9236 *cs->statusp = resp->status = status; 9237 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9238 LOCKU4res *, resp); 9239 return; 9240 } 9241 9242 /* Ensure specified filehandle matches */ 9243 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9244 rfs4_lo_state_rele(lsp, TRUE); 9245 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9246 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9247 LOCKU4res *, resp); 9248 return; 9249 } 9250 9251 /* hold off other access to lsp while we tinker */ 9252 rfs4_sw_enter(&lsp->rls_sw); 9253 9254 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9255 case NFS4_CHECK_STATEID_OKAY: 9256 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9257 != NFS4_CHKSEQ_OKAY) { 9258 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9259 goto end; 9260 } 9261 break; 9262 case NFS4_CHECK_STATEID_OLD: 9263 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9264 goto end; 9265 case NFS4_CHECK_STATEID_BAD: 9266 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9267 goto end; 9268 case NFS4_CHECK_STATEID_EXPIRED: 9269 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9270 goto end; 9271 case NFS4_CHECK_STATEID_CLOSED: 9272 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9273 goto end; 9274 case NFS4_CHECK_STATEID_REPLAY: 9275 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9276 case NFS4_CHKSEQ_OKAY: 9277 /* 9278 * This is a replayed stateid; if 9279 * seqid matches the next expected, 9280 * then client is using wrong seqid. 9281 */ 9282 case NFS4_CHKSEQ_BAD: 9283 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9284 goto end; 9285 case NFS4_CHKSEQ_REPLAY: 9286 rfs4_update_lease(lsp->rls_locker->rl_client); 9287 *cs->statusp = status = resp->status; 9288 goto end; 9289 } 9290 break; 9291 default: 9292 ASSERT(FALSE); 9293 break; 9294 } 9295 9296 rfs4_update_lock_sequence(lsp); 9297 rfs4_update_lease(lsp->rls_locker->rl_client); 9298 9299 /* 9300 * NFS4 only allows locking on regular files, so 9301 * verify type of object. 9302 */ 9303 if (cs->vp->v_type != VREG) { 9304 if (cs->vp->v_type == VDIR) 9305 status = NFS4ERR_ISDIR; 9306 else 9307 status = NFS4ERR_INVAL; 9308 goto out; 9309 } 9310 9311 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9312 status = NFS4ERR_GRACE; 9313 goto out; 9314 } 9315 9316 status = rfs4_do_lock(lsp, args->locktype, 9317 args->offset, args->length, cs->cr, resop); 9318 9319 out: 9320 *cs->statusp = resp->status = status; 9321 9322 if (status == NFS4_OK) 9323 resp->lock_stateid = lsp->rls_lockid.stateid; 9324 9325 rfs4_update_lock_resp(lsp, resop); 9326 9327 end: 9328 rfs4_sw_exit(&lsp->rls_sw); 9329 rfs4_lo_state_rele(lsp, TRUE); 9330 9331 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9332 LOCKU4res *, resp); 9333 } 9334 9335 /* 9336 * LOCKT is a best effort routine, the client can not be guaranteed that 9337 * the status return is still in effect by the time the reply is received. 9338 * They are numerous race conditions in this routine, but we are not required 9339 * and can not be accurate. 9340 */ 9341 /*ARGSUSED*/ 9342 void 9343 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9344 struct svc_req *req, struct compound_state *cs) 9345 { 9346 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9347 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9348 rfs4_lockowner_t *lo; 9349 rfs4_client_t *cp; 9350 bool_t create = FALSE; 9351 struct flock64 flk; 9352 int error; 9353 int flag = FREAD | FWRITE; 9354 int ltype; 9355 length4 posix_length; 9356 sysid_t sysid; 9357 pid_t pid; 9358 9359 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9360 LOCKT4args *, args); 9361 9362 if (cs->vp == NULL) { 9363 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9364 goto out; 9365 } 9366 9367 /* 9368 * NFS4 only allows locking on regular files, so 9369 * verify type of object. 9370 */ 9371 if (cs->vp->v_type != VREG) { 9372 if (cs->vp->v_type == VDIR) 9373 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9374 else 9375 *cs->statusp = resp->status = NFS4ERR_INVAL; 9376 goto out; 9377 } 9378 9379 /* 9380 * Check out the clientid to ensure the server knows about it 9381 * so that we correctly inform the client of a server reboot. 9382 */ 9383 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9384 == NULL) { 9385 *cs->statusp = resp->status = 9386 rfs4_check_clientid(&args->owner.clientid, 0); 9387 goto out; 9388 } 9389 if (rfs4_lease_expired(cp)) { 9390 rfs4_client_close(cp); 9391 /* 9392 * Protocol doesn't allow returning NFS4ERR_STALE as 9393 * other operations do on this check so STALE_CLIENTID 9394 * is returned instead 9395 */ 9396 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9397 goto out; 9398 } 9399 9400 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9401 *cs->statusp = resp->status = NFS4ERR_GRACE; 9402 rfs4_client_rele(cp); 9403 goto out; 9404 } 9405 rfs4_client_rele(cp); 9406 9407 resp->status = NFS4_OK; 9408 9409 switch (args->locktype) { 9410 case READ_LT: 9411 case READW_LT: 9412 ltype = F_RDLCK; 9413 break; 9414 case WRITE_LT: 9415 case WRITEW_LT: 9416 ltype = F_WRLCK; 9417 break; 9418 } 9419 9420 posix_length = args->length; 9421 /* Check for zero length. To lock to end of file use all ones for V4 */ 9422 if (posix_length == 0) { 9423 *cs->statusp = resp->status = NFS4ERR_INVAL; 9424 goto out; 9425 } else if (posix_length == (length4)(~0)) { 9426 posix_length = 0; /* Posix to end of file */ 9427 } 9428 9429 /* Find or create a lockowner */ 9430 lo = rfs4_findlockowner(&args->owner, &create); 9431 9432 if (lo) { 9433 pid = lo->rl_pid; 9434 if ((resp->status = 9435 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9436 goto err; 9437 } else { 9438 pid = 0; 9439 sysid = lockt_sysid; 9440 } 9441 retry: 9442 flk.l_type = ltype; 9443 flk.l_whence = 0; /* SEEK_SET */ 9444 flk.l_start = args->offset; 9445 flk.l_len = posix_length; 9446 flk.l_sysid = sysid; 9447 flk.l_pid = pid; 9448 flag |= F_REMOTELOCK; 9449 9450 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9451 9452 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9453 if (flk.l_len < 0 || flk.l_start < 0) { 9454 resp->status = NFS4ERR_INVAL; 9455 goto err; 9456 } 9457 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9458 NULL, cs->cr, NULL); 9459 9460 /* 9461 * N.B. We map error values to nfsv4 errors. This is differrent 9462 * than puterrno4 routine. 9463 */ 9464 switch (error) { 9465 case 0: 9466 if (flk.l_type == F_UNLCK) 9467 resp->status = NFS4_OK; 9468 else { 9469 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9470 goto retry; 9471 resp->status = NFS4ERR_DENIED; 9472 } 9473 break; 9474 case EOVERFLOW: 9475 resp->status = NFS4ERR_INVAL; 9476 break; 9477 case EINVAL: 9478 resp->status = NFS4ERR_NOTSUPP; 9479 break; 9480 default: 9481 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9482 error); 9483 resp->status = NFS4ERR_SERVERFAULT; 9484 break; 9485 } 9486 9487 err: 9488 if (lo) 9489 rfs4_lockowner_rele(lo); 9490 *cs->statusp = resp->status; 9491 out: 9492 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9493 LOCKT4res *, resp); 9494 } 9495 9496 int 9497 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9498 { 9499 int err; 9500 int cmd; 9501 vnode_t *vp; 9502 struct shrlock shr; 9503 struct shr_locowner shr_loco; 9504 int fflags = 0; 9505 9506 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9507 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9508 9509 if (sp->rs_closed) 9510 return (NFS4ERR_OLD_STATEID); 9511 9512 vp = sp->rs_finfo->rf_vp; 9513 ASSERT(vp); 9514 9515 shr.s_access = shr.s_deny = 0; 9516 9517 if (access & OPEN4_SHARE_ACCESS_READ) { 9518 fflags |= FREAD; 9519 shr.s_access |= F_RDACC; 9520 } 9521 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9522 fflags |= FWRITE; 9523 shr.s_access |= F_WRACC; 9524 } 9525 ASSERT(shr.s_access); 9526 9527 if (deny & OPEN4_SHARE_DENY_READ) 9528 shr.s_deny |= F_RDDNY; 9529 if (deny & OPEN4_SHARE_DENY_WRITE) 9530 shr.s_deny |= F_WRDNY; 9531 9532 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9533 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9534 shr_loco.sl_pid = shr.s_pid; 9535 shr_loco.sl_id = shr.s_sysid; 9536 shr.s_owner = (caddr_t)&shr_loco; 9537 shr.s_own_len = sizeof (shr_loco); 9538 9539 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9540 9541 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9542 if (err != 0) { 9543 if (err == EAGAIN) 9544 err = NFS4ERR_SHARE_DENIED; 9545 else 9546 err = puterrno4(err); 9547 return (err); 9548 } 9549 9550 sp->rs_share_access |= access; 9551 sp->rs_share_deny |= deny; 9552 9553 return (0); 9554 } 9555 9556 int 9557 rfs4_unshare(rfs4_state_t *sp) 9558 { 9559 int err; 9560 struct shrlock shr; 9561 struct shr_locowner shr_loco; 9562 9563 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9564 9565 if (sp->rs_closed || sp->rs_share_access == 0) 9566 return (0); 9567 9568 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9569 ASSERT(sp->rs_finfo->rf_vp); 9570 9571 shr.s_access = shr.s_deny = 0; 9572 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9573 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9574 shr_loco.sl_pid = shr.s_pid; 9575 shr_loco.sl_id = shr.s_sysid; 9576 shr.s_owner = (caddr_t)&shr_loco; 9577 shr.s_own_len = sizeof (shr_loco); 9578 9579 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9580 NULL); 9581 if (err != 0) { 9582 err = puterrno4(err); 9583 return (err); 9584 } 9585 9586 sp->rs_share_access = 0; 9587 sp->rs_share_deny = 0; 9588 9589 return (0); 9590 9591 } 9592 9593 static int 9594 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9595 { 9596 struct clist *wcl; 9597 count4 count = rok->data_len; 9598 int wlist_len; 9599 9600 wcl = args->wlist; 9601 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9602 return (FALSE); 9603 } 9604 wcl = args->wlist; 9605 rok->wlist_len = wlist_len; 9606 rok->wlist = wcl; 9607 return (TRUE); 9608 } 9609 9610 /* tunable to disable server referrals */ 9611 int rfs4_no_referrals = 0; 9612 9613 /* 9614 * Find an NFS record in reparse point data. 9615 * Returns 0 for success and <0 or an errno value on failure. 9616 */ 9617 int 9618 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9619 { 9620 int err; 9621 char *stype, *val; 9622 nvlist_t *nvl; 9623 nvpair_t *curr; 9624 9625 if ((nvl = reparse_init()) == NULL) 9626 return (-1); 9627 9628 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9629 reparse_free(nvl); 9630 return (err); 9631 } 9632 9633 curr = NULL; 9634 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9635 if ((stype = nvpair_name(curr)) == NULL) { 9636 reparse_free(nvl); 9637 return (-2); 9638 } 9639 if (strncasecmp(stype, "NFS", 3) == 0) 9640 break; 9641 } 9642 9643 if ((curr == NULL) || 9644 (nvpair_value_string(curr, &val))) { 9645 reparse_free(nvl); 9646 return (-3); 9647 } 9648 *nvlp = nvl; 9649 *svcp = stype; 9650 *datap = val; 9651 return (0); 9652 } 9653 9654 int 9655 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9656 { 9657 nvlist_t *nvl; 9658 char *s, *d; 9659 9660 if (rfs4_no_referrals != 0) 9661 return (B_FALSE); 9662 9663 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9664 return (B_FALSE); 9665 9666 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9667 return (B_FALSE); 9668 9669 reparse_free(nvl); 9670 9671 return (B_TRUE); 9672 } 9673 9674 /* 9675 * There is a user-level copy of this routine in ref_subr.c. 9676 * Changes should be kept in sync. 9677 */ 9678 static int 9679 nfs4_create_components(char *path, component4 *comp4) 9680 { 9681 int slen, plen, ncomp; 9682 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9683 9684 if (path == NULL) 9685 return (0); 9686 9687 plen = strlen(path) + 1; /* include the terminator */ 9688 ori_path = path; 9689 ncomp = 0; 9690 9691 /* count number of components in the path */ 9692 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9693 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9694 if ((slen = nxtc - path) == 0) { 9695 path = nxtc + 1; 9696 continue; 9697 } 9698 9699 if (comp4 != NULL) { 9700 bcopy(path, buf, slen); 9701 buf[slen] = '\0'; 9702 (void) str_to_utf8(buf, &comp4[ncomp]); 9703 } 9704 9705 ncomp++; /* 1 valid component */ 9706 path = nxtc + 1; 9707 } 9708 if (*nxtc == '\0' || *nxtc == '\n') 9709 break; 9710 } 9711 9712 return (ncomp); 9713 } 9714 9715 /* 9716 * There is a user-level copy of this routine in ref_subr.c. 9717 * Changes should be kept in sync. 9718 */ 9719 static int 9720 make_pathname4(char *path, pathname4 *pathname) 9721 { 9722 int ncomp; 9723 component4 *comp4; 9724 9725 if (pathname == NULL) 9726 return (0); 9727 9728 if (path == NULL) { 9729 pathname->pathname4_val = NULL; 9730 pathname->pathname4_len = 0; 9731 return (0); 9732 } 9733 9734 /* count number of components to alloc buffer */ 9735 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9736 pathname->pathname4_val = NULL; 9737 pathname->pathname4_len = 0; 9738 return (0); 9739 } 9740 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9741 9742 /* copy components into allocated buffer */ 9743 ncomp = nfs4_create_components(path, comp4); 9744 9745 pathname->pathname4_val = comp4; 9746 pathname->pathname4_len = ncomp; 9747 9748 return (ncomp); 9749 } 9750 9751 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9752 9753 fs_locations4 * 9754 fetch_referral(vnode_t *vp, cred_t *cr) 9755 { 9756 nvlist_t *nvl; 9757 char *stype, *sdata; 9758 fs_locations4 *result; 9759 char buf[1024]; 9760 size_t bufsize; 9761 XDR xdr; 9762 int err; 9763 9764 /* 9765 * Check attrs to ensure it's a reparse point 9766 */ 9767 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9768 return (NULL); 9769 9770 /* 9771 * Look for an NFS record and get the type and data 9772 */ 9773 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9774 return (NULL); 9775 9776 /* 9777 * With the type and data, upcall to get the referral 9778 */ 9779 bufsize = sizeof (buf); 9780 bzero(buf, sizeof (buf)); 9781 err = reparse_kderef((const char *)stype, (const char *)sdata, 9782 buf, &bufsize); 9783 reparse_free(nvl); 9784 9785 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9786 char *, stype, char *, sdata, char *, buf, int, err); 9787 if (err) { 9788 cmn_err(CE_NOTE, 9789 "reparsed daemon not running: unable to get referral (%d)", 9790 err); 9791 return (NULL); 9792 } 9793 9794 /* 9795 * We get an XDR'ed record back from the kderef call 9796 */ 9797 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9798 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9799 err = xdr_fs_locations4(&xdr, result); 9800 XDR_DESTROY(&xdr); 9801 if (err != TRUE) { 9802 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9803 int, err); 9804 return (NULL); 9805 } 9806 9807 /* 9808 * Look at path to recover fs_root, ignoring the leading '/' 9809 */ 9810 (void) make_pathname4(vp->v_path, &result->fs_root); 9811 9812 return (result); 9813 } 9814 9815 char * 9816 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9817 { 9818 fs_locations4 *fsl; 9819 fs_location4 *fs; 9820 char *server, *path, *symbuf; 9821 static char *prefix = "/net/"; 9822 int i, size, npaths; 9823 uint_t len; 9824 9825 /* Get the referral */ 9826 if ((fsl = fetch_referral(vp, cr)) == NULL) 9827 return (NULL); 9828 9829 /* Deal with only the first location and first server */ 9830 fs = &fsl->locations_val[0]; 9831 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9832 if (server == NULL) { 9833 rfs4_free_fs_locations4(fsl); 9834 kmem_free(fsl, sizeof (fs_locations4)); 9835 return (NULL); 9836 } 9837 9838 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9839 size = strlen(prefix) + len; 9840 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9841 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9842 9843 /* Allocate the symlink buffer and fill it */ 9844 symbuf = kmem_zalloc(size, KM_SLEEP); 9845 (void) strcat(symbuf, prefix); 9846 (void) strcat(symbuf, server); 9847 kmem_free(server, len); 9848 9849 npaths = 0; 9850 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9851 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9852 if (path == NULL) 9853 continue; 9854 (void) strcat(symbuf, "/"); 9855 (void) strcat(symbuf, path); 9856 npaths++; 9857 kmem_free(path, len); 9858 } 9859 9860 rfs4_free_fs_locations4(fsl); 9861 kmem_free(fsl, sizeof (fs_locations4)); 9862 9863 if (strsz != NULL) 9864 *strsz = size; 9865 return (symbuf); 9866 } 9867 9868 /* 9869 * Check to see if we have a downrev Solaris client, so that we 9870 * can send it a symlink instead of a referral. 9871 */ 9872 int 9873 client_is_downrev(struct svc_req *req) 9874 { 9875 struct sockaddr *ca; 9876 rfs4_clntip_t *ci; 9877 bool_t create = FALSE; 9878 int is_downrev; 9879 9880 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9881 ASSERT(ca); 9882 ci = rfs4_find_clntip(ca, &create); 9883 if (ci == NULL) 9884 return (0); 9885 is_downrev = ci->ri_no_referrals; 9886 rfs4_dbe_rele(ci->ri_dbe); 9887 return (is_downrev); 9888 } 9889