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