1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2012 by Delphix. All rights reserved. 26 */ 27 28 /* 29 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 30 * All Rights Reserved 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 #include <sys/zone.h> 60 #include <sys/kstat.h> 61 62 #include <fs/fs_reparse.h> 63 64 #include <rpc/types.h> 65 #include <rpc/auth.h> 66 #include <rpc/rpcsec_gss.h> 67 #include <rpc/svc.h> 68 69 #include <nfs/nfs.h> 70 #include <nfs/export.h> 71 #include <nfs/nfs_cmd.h> 72 #include <nfs/lm.h> 73 #include <nfs/nfs4.h> 74 75 #include <sys/strsubr.h> 76 #include <sys/strsun.h> 77 78 #include <inet/common.h> 79 #include <inet/ip.h> 80 #include <inet/ip6.h> 81 82 #include <sys/tsol/label.h> 83 #include <sys/tsol/tndb.h> 84 85 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 86 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 87 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 88 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 89 extern struct svc_ops rdma_svc_ops; 90 extern int nfs_loaned_buffers; 91 /* End of Tunables */ 92 93 static int rdma_setup_read_data4(READ4args *, READ4res *); 94 95 /* 96 * Used to bump the stateid4.seqid value and show changes in the stateid 97 */ 98 #define next_stateid(sp) (++(sp)->bits.chgseq) 99 100 /* 101 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 102 * This is used to return NFS4ERR_TOOSMALL when clients specify 103 * maxcount that isn't large enough to hold the smallest possible 104 * XDR encoded dirent. 105 * 106 * sizeof cookie (8 bytes) + 107 * sizeof name_len (4 bytes) + 108 * sizeof smallest (padded) name (4 bytes) + 109 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 110 * sizeof attrlist4_len (4 bytes) + 111 * sizeof next boolean (4 bytes) 112 * 113 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 114 * the smallest possible entry4 (assumes no attrs requested). 115 * sizeof nfsstat4 (4 bytes) + 116 * sizeof verifier4 (8 bytes) + 117 * sizeof entry4list bool (4 bytes) + 118 * sizeof entry4 (36 bytes) + 119 * sizeof eof bool (4 bytes) 120 * 121 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 122 * VOP_READDIR. Its value is the size of the maximum possible dirent 123 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 124 * required for a given name length. MAXNAMELEN is the maximum 125 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 126 * macros are to allow for . and .. entries -- just a minor tweak to try 127 * and guarantee that buffer we give to VOP_READDIR will be large enough 128 * to hold ., .., and the largest possible solaris dirent64. 129 */ 130 #define RFS4_MINLEN_ENTRY4 36 131 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 132 #define RFS4_MINLEN_RDDIR_BUF \ 133 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 134 135 /* 136 * It would be better to pad to 4 bytes since that's what XDR would do, 137 * but the dirents UFS gives us are already padded to 8, so just take 138 * what we're given. Dircount is only a hint anyway. Currently the 139 * solaris kernel is ASCII only, so there's no point in calling the 140 * UTF8 functions. 141 * 142 * dirent64: named padded to provide 8 byte struct alignment 143 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 144 * 145 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 146 * 147 */ 148 #define DIRENT64_TO_DIRCOUNT(dp) \ 149 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 150 151 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 152 153 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 154 155 u_longlong_t nfs4_srv_caller_id; 156 uint_t nfs4_srv_vkey = 0; 157 158 verifier4 Write4verf; 159 verifier4 Readdir4verf; 160 161 void rfs4_init_compound_state(struct compound_state *); 162 163 static void nullfree(caddr_t); 164 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 171 struct compound_state *); 172 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 173 struct compound_state *); 174 static void rfs4_op_create_free(nfs_resop4 *resop); 175 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 176 struct svc_req *, struct compound_state *); 177 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 178 struct svc_req *, struct compound_state *); 179 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_getattr_free(nfs_resop4 *); 182 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_getfh_free(nfs_resop4 *); 185 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void lock_denied_free(nfs_resop4 *); 192 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 201 struct svc_req *req, struct compound_state *cs); 202 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 203 struct compound_state *); 204 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 207 struct svc_req *, struct compound_state *); 208 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 209 struct svc_req *, struct compound_state *); 210 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 217 struct compound_state *); 218 static void rfs4_op_read_free(nfs_resop4 *); 219 static void rfs4_op_readdir_free(nfs_resop4 *resop); 220 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_readlink_free(nfs_resop4 *); 223 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 224 struct svc_req *, struct compound_state *); 225 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 236 struct compound_state *); 237 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 238 struct compound_state *); 239 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 240 struct compound_state *); 241 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 242 struct svc_req *, struct compound_state *); 243 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 244 struct svc_req *req, struct compound_state *); 245 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 246 struct compound_state *); 247 static void rfs4_op_secinfo_free(nfs_resop4 *); 248 249 static nfsstat4 check_open_access(uint32_t, 250 struct compound_state *, struct svc_req *); 251 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 252 void rfs4_ss_clid(rfs4_client_t *); 253 254 /* 255 * translation table for attrs 256 */ 257 struct nfs4_ntov_table { 258 union nfs4_attr_u *na; 259 uint8_t amap[NFS4_MAXNUM_ATTRS]; 260 int attrcnt; 261 bool_t vfsstat; 262 }; 263 264 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 265 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 266 struct nfs4_svgetit_arg *sargp); 267 268 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 269 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 270 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 271 272 fem_t *deleg_rdops; 273 fem_t *deleg_wrops; 274 275 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 276 kmutex_t rfs4_servinst_lock; /* protects linked list */ 277 int rfs4_seen_first_compound; /* set first time we see one */ 278 279 /* 280 * NFS4 op dispatch table 281 */ 282 283 struct rfsv4disp { 284 void (*dis_proc)(); /* proc to call */ 285 void (*dis_resfree)(); /* frees space allocated by proc */ 286 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 287 int op_type; /* operation type, see below */ 288 }; 289 290 /* 291 * operation types; used primarily for the per-exportinfo kstat implementation 292 */ 293 #define NFS4_OP_NOFH 0 /* The operation does not operate with any */ 294 /* particular filehandle; we cannot associate */ 295 /* it with any exportinfo. */ 296 297 #define NFS4_OP_CFH 1 /* The operation works with the current */ 298 /* filehandle; we associate the operation */ 299 /* with the exportinfo related to the current */ 300 /* filehandle (as set before the operation is */ 301 /* executed). */ 302 303 #define NFS4_OP_SFH 2 /* The operation works with the saved */ 304 /* filehandle; we associate the operation */ 305 /* with the exportinfo related to the saved */ 306 /* filehandle (as set before the operation is */ 307 /* executed). */ 308 309 #define NFS4_OP_POSTCFH 3 /* The operation ignores the current */ 310 /* filehandle, but sets the new current */ 311 /* filehandle instead; we associate the */ 312 /* operation with the exportinfo related to */ 313 /* the current filehandle as set after the */ 314 /* operation is successfuly executed. Since */ 315 /* we do not know the particular exportinfo */ 316 /* (and thus the kstat) before the operation */ 317 /* is done, there is no simple way how to */ 318 /* update some I/O kstat statistics related */ 319 /* to kstat_queue(9F). */ 320 321 static struct rfsv4disp rfsv4disptab[] = { 322 /* 323 * NFS VERSION 4 324 */ 325 326 /* RFS_NULL = 0 */ 327 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 328 329 /* UNUSED = 1 */ 330 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 331 332 /* UNUSED = 2 */ 333 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 334 335 /* OP_ACCESS = 3 */ 336 {rfs4_op_access, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 337 338 /* OP_CLOSE = 4 */ 339 {rfs4_op_close, nullfree, 0, NFS4_OP_CFH}, 340 341 /* OP_COMMIT = 5 */ 342 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 343 344 /* OP_CREATE = 6 */ 345 {rfs4_op_create, nullfree, 0, NFS4_OP_CFH}, 346 347 /* OP_DELEGPURGE = 7 */ 348 {rfs4_op_delegpurge, nullfree, 0, NFS4_OP_NOFH}, 349 350 /* OP_DELEGRETURN = 8 */ 351 {rfs4_op_delegreturn, nullfree, 0, NFS4_OP_CFH}, 352 353 /* OP_GETATTR = 9 */ 354 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 355 356 /* OP_GETFH = 10 */ 357 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL, NFS4_OP_CFH}, 358 359 /* OP_LINK = 11 */ 360 {rfs4_op_link, nullfree, 0, NFS4_OP_CFH}, 361 362 /* OP_LOCK = 12 */ 363 {rfs4_op_lock, lock_denied_free, 0, NFS4_OP_CFH}, 364 365 /* OP_LOCKT = 13 */ 366 {rfs4_op_lockt, lock_denied_free, 0, NFS4_OP_CFH}, 367 368 /* OP_LOCKU = 14 */ 369 {rfs4_op_locku, nullfree, 0, NFS4_OP_CFH}, 370 371 /* OP_LOOKUP = 15 */ 372 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 373 NFS4_OP_CFH}, 374 375 /* OP_LOOKUPP = 16 */ 376 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 377 NFS4_OP_CFH}, 378 379 /* OP_NVERIFY = 17 */ 380 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 381 382 /* OP_OPEN = 18 */ 383 {rfs4_op_open, rfs4_free_reply, 0, NFS4_OP_CFH}, 384 385 /* OP_OPENATTR = 19 */ 386 {rfs4_op_openattr, nullfree, 0, NFS4_OP_CFH}, 387 388 /* OP_OPEN_CONFIRM = 20 */ 389 {rfs4_op_open_confirm, nullfree, 0, NFS4_OP_CFH}, 390 391 /* OP_OPEN_DOWNGRADE = 21 */ 392 {rfs4_op_open_downgrade, nullfree, 0, NFS4_OP_CFH}, 393 394 /* OP_OPEN_PUTFH = 22 */ 395 {rfs4_op_putfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 396 397 /* OP_PUTPUBFH = 23 */ 398 {rfs4_op_putpubfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 399 400 /* OP_PUTROOTFH = 24 */ 401 {rfs4_op_putrootfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 402 403 /* OP_READ = 25 */ 404 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 405 406 /* OP_READDIR = 26 */ 407 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 408 409 /* OP_READLINK = 27 */ 410 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 411 412 /* OP_REMOVE = 28 */ 413 {rfs4_op_remove, nullfree, 0, NFS4_OP_CFH}, 414 415 /* OP_RENAME = 29 */ 416 {rfs4_op_rename, nullfree, 0, NFS4_OP_CFH}, 417 418 /* OP_RENEW = 30 */ 419 {rfs4_op_renew, nullfree, 0, NFS4_OP_NOFH}, 420 421 /* OP_RESTOREFH = 31 */ 422 {rfs4_op_restorefh, nullfree, RPC_ALL, NFS4_OP_SFH}, 423 424 /* OP_SAVEFH = 32 */ 425 {rfs4_op_savefh, nullfree, RPC_ALL, NFS4_OP_CFH}, 426 427 /* OP_SECINFO = 33 */ 428 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0, NFS4_OP_CFH}, 429 430 /* OP_SETATTR = 34 */ 431 {rfs4_op_setattr, nullfree, 0, NFS4_OP_CFH}, 432 433 /* OP_SETCLIENTID = 35 */ 434 {rfs4_op_setclientid, nullfree, 0, NFS4_OP_NOFH}, 435 436 /* OP_SETCLIENTID_CONFIRM = 36 */ 437 {rfs4_op_setclientid_confirm, nullfree, 0, NFS4_OP_NOFH}, 438 439 /* OP_VERIFY = 37 */ 440 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 441 442 /* OP_WRITE = 38 */ 443 {rfs4_op_write, nullfree, 0, NFS4_OP_CFH}, 444 445 /* OP_RELEASE_LOCKOWNER = 39 */ 446 {rfs4_op_release_lockowner, nullfree, 0, NFS4_OP_NOFH}, 447 }; 448 449 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 450 451 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 452 453 #ifdef DEBUG 454 455 int rfs4_fillone_debug = 0; 456 int rfs4_no_stub_access = 1; 457 int rfs4_rddir_debug = 0; 458 459 static char *rfs4_op_string[] = { 460 "rfs4_op_null", 461 "rfs4_op_1 unused", 462 "rfs4_op_2 unused", 463 "rfs4_op_access", 464 "rfs4_op_close", 465 "rfs4_op_commit", 466 "rfs4_op_create", 467 "rfs4_op_delegpurge", 468 "rfs4_op_delegreturn", 469 "rfs4_op_getattr", 470 "rfs4_op_getfh", 471 "rfs4_op_link", 472 "rfs4_op_lock", 473 "rfs4_op_lockt", 474 "rfs4_op_locku", 475 "rfs4_op_lookup", 476 "rfs4_op_lookupp", 477 "rfs4_op_nverify", 478 "rfs4_op_open", 479 "rfs4_op_openattr", 480 "rfs4_op_open_confirm", 481 "rfs4_op_open_downgrade", 482 "rfs4_op_putfh", 483 "rfs4_op_putpubfh", 484 "rfs4_op_putrootfh", 485 "rfs4_op_read", 486 "rfs4_op_readdir", 487 "rfs4_op_readlink", 488 "rfs4_op_remove", 489 "rfs4_op_rename", 490 "rfs4_op_renew", 491 "rfs4_op_restorefh", 492 "rfs4_op_savefh", 493 "rfs4_op_secinfo", 494 "rfs4_op_setattr", 495 "rfs4_op_setclientid", 496 "rfs4_op_setclient_confirm", 497 "rfs4_op_verify", 498 "rfs4_op_write", 499 "rfs4_op_release_lockowner", 500 "rfs4_op_illegal" 501 }; 502 #endif 503 504 void rfs4_ss_chkclid(rfs4_client_t *); 505 506 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 507 508 extern void rfs4_free_fs_locations4(fs_locations4 *); 509 510 #ifdef nextdp 511 #undef nextdp 512 #endif 513 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 514 515 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 516 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 517 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 518 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 519 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 520 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 521 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 522 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 523 NULL, NULL 524 }; 525 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 526 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 527 VOPNAME_READ, { .femop_read = deleg_wr_read }, 528 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 529 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 530 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 531 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 532 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 533 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 534 NULL, NULL 535 }; 536 537 int 538 rfs4_srvrinit(void) 539 { 540 timespec32_t verf; 541 int error; 542 extern void rfs4_attr_init(); 543 extern krwlock_t rfs4_deleg_policy_lock; 544 545 /* 546 * The following algorithm attempts to find a unique verifier 547 * to be used as the write verifier returned from the server 548 * to the client. It is important that this verifier change 549 * whenever the server reboots. Of secondary importance, it 550 * is important for the verifier to be unique between two 551 * different servers. 552 * 553 * Thus, an attempt is made to use the system hostid and the 554 * current time in seconds when the nfssrv kernel module is 555 * loaded. It is assumed that an NFS server will not be able 556 * to boot and then to reboot in less than a second. If the 557 * hostid has not been set, then the current high resolution 558 * time is used. This will ensure different verifiers each 559 * time the server reboots and minimize the chances that two 560 * different servers will have the same verifier. 561 * XXX - this is broken on LP64 kernels. 562 */ 563 verf.tv_sec = (time_t)zone_get_hostid(NULL); 564 if (verf.tv_sec != 0) { 565 verf.tv_nsec = gethrestime_sec(); 566 } else { 567 timespec_t tverf; 568 569 gethrestime(&tverf); 570 verf.tv_sec = (time_t)tverf.tv_sec; 571 verf.tv_nsec = tverf.tv_nsec; 572 } 573 574 Write4verf = *(uint64_t *)&verf; 575 576 rfs4_attr_init(); 577 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 578 579 /* Used to manage create/destroy of server state */ 580 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 581 582 /* Used to manage access to server instance linked list */ 583 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 584 585 /* Used to manage access to rfs4_deleg_policy */ 586 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 587 588 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 589 if (error != 0) { 590 rfs4_disable_delegation(); 591 } else { 592 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 593 &deleg_wrops); 594 if (error != 0) { 595 rfs4_disable_delegation(); 596 fem_free(deleg_rdops); 597 } 598 } 599 600 nfs4_srv_caller_id = fs_new_caller_id(); 601 602 lockt_sysid = lm_alloc_sysidt(); 603 604 vsd_create(&nfs4_srv_vkey, NULL); 605 606 return (0); 607 } 608 609 void 610 rfs4_srvrfini(void) 611 { 612 extern krwlock_t rfs4_deleg_policy_lock; 613 614 if (lockt_sysid != LM_NOSYSID) { 615 lm_free_sysidt(lockt_sysid); 616 lockt_sysid = LM_NOSYSID; 617 } 618 619 mutex_destroy(&rfs4_deleg_lock); 620 mutex_destroy(&rfs4_state_lock); 621 rw_destroy(&rfs4_deleg_policy_lock); 622 623 fem_free(deleg_rdops); 624 fem_free(deleg_wrops); 625 } 626 627 void 628 rfs4_init_compound_state(struct compound_state *cs) 629 { 630 bzero(cs, sizeof (*cs)); 631 cs->cont = TRUE; 632 cs->access = CS_ACCESS_DENIED; 633 cs->deleg = FALSE; 634 cs->mandlock = FALSE; 635 cs->fh.nfs_fh4_val = cs->fhbuf; 636 } 637 638 void 639 rfs4_grace_start(rfs4_servinst_t *sip) 640 { 641 rw_enter(&sip->rwlock, RW_WRITER); 642 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 643 sip->grace_period = rfs4_grace_period; 644 rw_exit(&sip->rwlock); 645 } 646 647 /* 648 * returns true if the instance's grace period has never been started 649 */ 650 int 651 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 652 { 653 time_t start_time; 654 655 rw_enter(&sip->rwlock, RW_READER); 656 start_time = sip->start_time; 657 rw_exit(&sip->rwlock); 658 659 return (start_time == 0); 660 } 661 662 /* 663 * Indicates if server instance is within the 664 * grace period. 665 */ 666 int 667 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 668 { 669 time_t grace_expiry; 670 671 rw_enter(&sip->rwlock, RW_READER); 672 grace_expiry = sip->start_time + sip->grace_period; 673 rw_exit(&sip->rwlock); 674 675 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 676 } 677 678 int 679 rfs4_clnt_in_grace(rfs4_client_t *cp) 680 { 681 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 682 683 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 684 } 685 686 /* 687 * reset all currently active grace periods 688 */ 689 void 690 rfs4_grace_reset_all(void) 691 { 692 rfs4_servinst_t *sip; 693 694 mutex_enter(&rfs4_servinst_lock); 695 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 696 if (rfs4_servinst_in_grace(sip)) 697 rfs4_grace_start(sip); 698 mutex_exit(&rfs4_servinst_lock); 699 } 700 701 /* 702 * start any new instances' grace periods 703 */ 704 void 705 rfs4_grace_start_new(void) 706 { 707 rfs4_servinst_t *sip; 708 709 mutex_enter(&rfs4_servinst_lock); 710 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 711 if (rfs4_servinst_grace_new(sip)) 712 rfs4_grace_start(sip); 713 mutex_exit(&rfs4_servinst_lock); 714 } 715 716 static rfs4_dss_path_t * 717 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 718 { 719 size_t len; 720 rfs4_dss_path_t *dss_path; 721 722 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 723 724 /* 725 * Take a copy of the string, since the original may be overwritten. 726 * Sadly, no strdup() in the kernel. 727 */ 728 /* allow for NUL */ 729 len = strlen(path) + 1; 730 dss_path->path = kmem_alloc(len, KM_SLEEP); 731 (void) strlcpy(dss_path->path, path, len); 732 733 /* associate with servinst */ 734 dss_path->sip = sip; 735 dss_path->index = index; 736 737 /* 738 * Add to list of served paths. 739 * No locking required, as we're only ever called at startup. 740 */ 741 if (rfs4_dss_pathlist == NULL) { 742 /* this is the first dss_path_t */ 743 744 /* needed for insque/remque */ 745 dss_path->next = dss_path->prev = dss_path; 746 747 rfs4_dss_pathlist = dss_path; 748 } else { 749 insque(dss_path, rfs4_dss_pathlist); 750 } 751 752 return (dss_path); 753 } 754 755 /* 756 * Create a new server instance, and make it the currently active instance. 757 * Note that starting the grace period too early will reduce the clients' 758 * recovery window. 759 */ 760 void 761 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 762 { 763 unsigned i; 764 rfs4_servinst_t *sip; 765 rfs4_oldstate_t *oldstate; 766 767 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 768 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 769 770 sip->start_time = (time_t)0; 771 sip->grace_period = (time_t)0; 772 sip->next = NULL; 773 sip->prev = NULL; 774 775 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 776 /* 777 * This initial dummy entry is required to setup for insque/remque. 778 * It must be skipped over whenever the list is traversed. 779 */ 780 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 781 /* insque/remque require initial list entry to be self-terminated */ 782 oldstate->next = oldstate; 783 oldstate->prev = oldstate; 784 sip->oldstate = oldstate; 785 786 787 sip->dss_npaths = dss_npaths; 788 sip->dss_paths = kmem_alloc(dss_npaths * 789 sizeof (rfs4_dss_path_t *), KM_SLEEP); 790 791 for (i = 0; i < dss_npaths; i++) { 792 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 793 } 794 795 mutex_enter(&rfs4_servinst_lock); 796 if (rfs4_cur_servinst != NULL) { 797 /* add to linked list */ 798 sip->prev = rfs4_cur_servinst; 799 rfs4_cur_servinst->next = sip; 800 } 801 if (start_grace) 802 rfs4_grace_start(sip); 803 /* make the new instance "current" */ 804 rfs4_cur_servinst = sip; 805 806 mutex_exit(&rfs4_servinst_lock); 807 } 808 809 /* 810 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 811 * all instances directly. 812 */ 813 void 814 rfs4_servinst_destroy_all(void) 815 { 816 rfs4_servinst_t *sip, *prev, *current; 817 #ifdef DEBUG 818 int n = 0; 819 #endif 820 821 mutex_enter(&rfs4_servinst_lock); 822 ASSERT(rfs4_cur_servinst != NULL); 823 current = rfs4_cur_servinst; 824 rfs4_cur_servinst = NULL; 825 for (sip = current; sip != NULL; sip = prev) { 826 prev = sip->prev; 827 rw_destroy(&sip->rwlock); 828 if (sip->oldstate) 829 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 830 if (sip->dss_paths) 831 kmem_free(sip->dss_paths, 832 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 833 kmem_free(sip, sizeof (rfs4_servinst_t)); 834 #ifdef DEBUG 835 n++; 836 #endif 837 } 838 mutex_exit(&rfs4_servinst_lock); 839 } 840 841 /* 842 * Assign the current server instance to a client_t. 843 * Should be called with cp->rc_dbe held. 844 */ 845 void 846 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 847 { 848 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 849 850 /* 851 * The lock ensures that if the current instance is in the process 852 * of changing, we will see the new one. 853 */ 854 mutex_enter(&rfs4_servinst_lock); 855 cp->rc_server_instance = sip; 856 mutex_exit(&rfs4_servinst_lock); 857 } 858 859 rfs4_servinst_t * 860 rfs4_servinst(rfs4_client_t *cp) 861 { 862 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 863 864 return (cp->rc_server_instance); 865 } 866 867 /* ARGSUSED */ 868 static void 869 nullfree(caddr_t resop) 870 { 871 } 872 873 /* 874 * This is a fall-through for invalid or not implemented (yet) ops 875 */ 876 /* ARGSUSED */ 877 static void 878 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 879 struct compound_state *cs) 880 { 881 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 882 } 883 884 /* 885 * Check if the security flavor, nfsnum, is in the flavor_list. 886 */ 887 bool_t 888 in_flavor_list(int nfsnum, int *flavor_list, int count) 889 { 890 int i; 891 892 for (i = 0; i < count; i++) { 893 if (nfsnum == flavor_list[i]) 894 return (TRUE); 895 } 896 return (FALSE); 897 } 898 899 /* 900 * Used by rfs4_op_secinfo to get the security information from the 901 * export structure associated with the component. 902 */ 903 /* ARGSUSED */ 904 static nfsstat4 905 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 906 { 907 int error, different_export = 0; 908 vnode_t *dvp, *vp; 909 struct exportinfo *exi = NULL; 910 fid_t fid; 911 uint_t count, i; 912 secinfo4 *resok_val; 913 struct secinfo *secp; 914 seconfig_t *si; 915 bool_t did_traverse = FALSE; 916 int dotdot, walk; 917 918 dvp = cs->vp; 919 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 920 921 /* 922 * If dotdotting, then need to check whether it's above the 923 * root of a filesystem, or above an export point. 924 */ 925 if (dotdot) { 926 927 /* 928 * If dotdotting at the root of a filesystem, then 929 * need to traverse back to the mounted-on filesystem 930 * and do the dotdot lookup there. 931 */ 932 if (cs->vp->v_flag & VROOT) { 933 934 /* 935 * If at the system root, then can 936 * go up no further. 937 */ 938 if (VN_CMP(dvp, rootdir)) 939 return (puterrno4(ENOENT)); 940 941 /* 942 * Traverse back to the mounted-on filesystem 943 */ 944 dvp = untraverse(cs->vp); 945 946 /* 947 * Set the different_export flag so we remember 948 * to pick up a new exportinfo entry for 949 * this new filesystem. 950 */ 951 different_export = 1; 952 } else { 953 954 /* 955 * If dotdotting above an export point then set 956 * the different_export to get new export info. 957 */ 958 different_export = nfs_exported(cs->exi, cs->vp); 959 } 960 } 961 962 /* 963 * Get the vnode for the component "nm". 964 */ 965 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 966 NULL, NULL, NULL); 967 if (error) 968 return (puterrno4(error)); 969 970 /* 971 * If the vnode is in a pseudo filesystem, or if the security flavor 972 * used in the request is valid but not an explicitly shared flavor, 973 * or the access bit indicates that this is a limited access, 974 * check whether this vnode is visible. 975 */ 976 if (!different_export && 977 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 978 cs->access & CS_ACCESS_LIMITED)) { 979 if (! nfs_visible(cs->exi, vp, &different_export)) { 980 VN_RELE(vp); 981 return (puterrno4(ENOENT)); 982 } 983 } 984 985 /* 986 * If it's a mountpoint, then traverse it. 987 */ 988 if (vn_ismntpt(vp)) { 989 if ((error = traverse(&vp)) != 0) { 990 VN_RELE(vp); 991 return (puterrno4(error)); 992 } 993 /* remember that we had to traverse mountpoint */ 994 did_traverse = TRUE; 995 different_export = 1; 996 } else if (vp->v_vfsp != dvp->v_vfsp) { 997 /* 998 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 999 * then vp is probably an LOFS object. We don't need the 1000 * realvp, we just need to know that we might have crossed 1001 * a server fs boundary and need to call checkexport4. 1002 * (LOFS lookup hides server fs mountpoints, and actually calls 1003 * traverse) 1004 */ 1005 different_export = 1; 1006 } 1007 1008 /* 1009 * Get the export information for it. 1010 */ 1011 if (different_export) { 1012 1013 bzero(&fid, sizeof (fid)); 1014 fid.fid_len = MAXFIDSZ; 1015 error = vop_fid_pseudo(vp, &fid); 1016 if (error) { 1017 VN_RELE(vp); 1018 return (puterrno4(error)); 1019 } 1020 1021 if (dotdot) 1022 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 1023 else 1024 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 1025 1026 if (exi == NULL) { 1027 if (did_traverse == TRUE) { 1028 /* 1029 * If this vnode is a mounted-on vnode, 1030 * but the mounted-on file system is not 1031 * exported, send back the secinfo for 1032 * the exported node that the mounted-on 1033 * vnode lives in. 1034 */ 1035 exi = cs->exi; 1036 } else { 1037 VN_RELE(vp); 1038 return (puterrno4(EACCES)); 1039 } 1040 } 1041 } else { 1042 exi = cs->exi; 1043 } 1044 ASSERT(exi != NULL); 1045 1046 1047 /* 1048 * Create the secinfo result based on the security information 1049 * from the exportinfo structure (exi). 1050 * 1051 * Return all flavors for a pseudo node. 1052 * For a real export node, return the flavor that the client 1053 * has access with. 1054 */ 1055 ASSERT(RW_LOCK_HELD(&exported_lock)); 1056 if (PSEUDO(exi)) { 1057 count = exi->exi_export.ex_seccnt; /* total sec count */ 1058 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1059 secp = exi->exi_export.ex_secinfo; 1060 1061 for (i = 0; i < count; i++) { 1062 si = &secp[i].s_secinfo; 1063 resok_val[i].flavor = si->sc_rpcnum; 1064 if (resok_val[i].flavor == RPCSEC_GSS) { 1065 rpcsec_gss_info *info; 1066 1067 info = &resok_val[i].flavor_info; 1068 info->qop = si->sc_qop; 1069 info->service = (rpc_gss_svc_t)si->sc_service; 1070 1071 /* get oid opaque data */ 1072 info->oid.sec_oid4_len = 1073 si->sc_gss_mech_type->length; 1074 info->oid.sec_oid4_val = kmem_alloc( 1075 si->sc_gss_mech_type->length, KM_SLEEP); 1076 bcopy( 1077 si->sc_gss_mech_type->elements, 1078 info->oid.sec_oid4_val, 1079 info->oid.sec_oid4_len); 1080 } 1081 } 1082 resp->SECINFO4resok_len = count; 1083 resp->SECINFO4resok_val = resok_val; 1084 } else { 1085 int ret_cnt = 0, k = 0; 1086 int *flavor_list; 1087 1088 count = exi->exi_export.ex_seccnt; /* total sec count */ 1089 secp = exi->exi_export.ex_secinfo; 1090 1091 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1092 /* find out which flavors to return */ 1093 for (i = 0; i < count; i ++) { 1094 int access, flavor, perm; 1095 1096 flavor = secp[i].s_secinfo.sc_nfsnum; 1097 perm = secp[i].s_flags; 1098 1099 access = nfsauth4_secinfo_access(exi, cs->req, 1100 flavor, perm, cs->basecr); 1101 1102 if (! (access & NFSAUTH_DENIED) && 1103 ! (access & NFSAUTH_WRONGSEC)) { 1104 flavor_list[ret_cnt] = flavor; 1105 ret_cnt++; 1106 } 1107 } 1108 1109 /* Create the returning SECINFO value */ 1110 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1111 1112 for (i = 0; i < count; i++) { 1113 /* 1114 * If the flavor is in the flavor list, 1115 * fill in resok_val. 1116 */ 1117 si = &secp[i].s_secinfo; 1118 if (in_flavor_list(si->sc_nfsnum, 1119 flavor_list, ret_cnt)) { 1120 resok_val[k].flavor = si->sc_rpcnum; 1121 if (resok_val[k].flavor == RPCSEC_GSS) { 1122 rpcsec_gss_info *info; 1123 1124 info = &resok_val[k].flavor_info; 1125 info->qop = si->sc_qop; 1126 info->service = (rpc_gss_svc_t) 1127 si->sc_service; 1128 1129 /* get oid opaque data */ 1130 info->oid.sec_oid4_len = 1131 si->sc_gss_mech_type->length; 1132 info->oid.sec_oid4_val = kmem_alloc( 1133 si->sc_gss_mech_type->length, 1134 KM_SLEEP); 1135 bcopy(si->sc_gss_mech_type->elements, 1136 info->oid.sec_oid4_val, 1137 info->oid.sec_oid4_len); 1138 } 1139 k++; 1140 } 1141 if (k >= ret_cnt) 1142 break; 1143 } 1144 resp->SECINFO4resok_len = ret_cnt; 1145 resp->SECINFO4resok_val = resok_val; 1146 kmem_free(flavor_list, count * sizeof (int)); 1147 } 1148 1149 VN_RELE(vp); 1150 return (NFS4_OK); 1151 } 1152 1153 /* 1154 * SECINFO (Operation 33): Obtain required security information on 1155 * the component name in the format of (security-mechanism-oid, qop, service) 1156 * triplets. 1157 */ 1158 /* ARGSUSED */ 1159 static void 1160 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1161 struct compound_state *cs) 1162 { 1163 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1164 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1165 utf8string *utfnm = &args->name; 1166 uint_t len; 1167 char *nm; 1168 struct sockaddr *ca; 1169 char *name = NULL; 1170 nfsstat4 status = NFS4_OK; 1171 1172 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1173 SECINFO4args *, args); 1174 1175 /* 1176 * Current file handle (cfh) should have been set before getting 1177 * into this function. If not, return error. 1178 */ 1179 if (cs->vp == NULL) { 1180 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1181 goto out; 1182 } 1183 1184 if (cs->vp->v_type != VDIR) { 1185 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1186 goto out; 1187 } 1188 1189 /* 1190 * Verify the component name. If failed, error out, but 1191 * do not error out if the component name is a "..". 1192 * SECINFO will return its parents secinfo data for SECINFO "..". 1193 */ 1194 status = utf8_dir_verify(utfnm); 1195 if (status != NFS4_OK) { 1196 if (utfnm->utf8string_len != 2 || 1197 utfnm->utf8string_val[0] != '.' || 1198 utfnm->utf8string_val[1] != '.') { 1199 *cs->statusp = resp->status = status; 1200 goto out; 1201 } 1202 } 1203 1204 nm = utf8_to_str(utfnm, &len, NULL); 1205 if (nm == NULL) { 1206 *cs->statusp = resp->status = NFS4ERR_INVAL; 1207 goto out; 1208 } 1209 1210 if (len > MAXNAMELEN) { 1211 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1212 kmem_free(nm, len); 1213 goto out; 1214 } 1215 1216 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1217 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1218 MAXPATHLEN + 1); 1219 1220 if (name == NULL) { 1221 *cs->statusp = resp->status = NFS4ERR_INVAL; 1222 kmem_free(nm, len); 1223 goto out; 1224 } 1225 1226 1227 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1228 1229 if (name != nm) 1230 kmem_free(name, MAXPATHLEN + 1); 1231 kmem_free(nm, len); 1232 1233 out: 1234 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1235 SECINFO4res *, resp); 1236 } 1237 1238 /* 1239 * Free SECINFO result. 1240 */ 1241 /* ARGSUSED */ 1242 static void 1243 rfs4_op_secinfo_free(nfs_resop4 *resop) 1244 { 1245 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1246 int count, i; 1247 secinfo4 *resok_val; 1248 1249 /* If this is not an Ok result, nothing to free. */ 1250 if (resp->status != NFS4_OK) { 1251 return; 1252 } 1253 1254 count = resp->SECINFO4resok_len; 1255 resok_val = resp->SECINFO4resok_val; 1256 1257 for (i = 0; i < count; i++) { 1258 if (resok_val[i].flavor == RPCSEC_GSS) { 1259 rpcsec_gss_info *info; 1260 1261 info = &resok_val[i].flavor_info; 1262 kmem_free(info->oid.sec_oid4_val, 1263 info->oid.sec_oid4_len); 1264 } 1265 } 1266 kmem_free(resok_val, count * sizeof (secinfo4)); 1267 resp->SECINFO4resok_len = 0; 1268 resp->SECINFO4resok_val = NULL; 1269 } 1270 1271 /* ARGSUSED */ 1272 static void 1273 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1274 struct compound_state *cs) 1275 { 1276 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1277 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1278 int error; 1279 vnode_t *vp; 1280 struct vattr va; 1281 int checkwriteperm; 1282 cred_t *cr = cs->cr; 1283 bslabel_t *clabel, *slabel; 1284 ts_label_t *tslabel; 1285 boolean_t admin_low_client; 1286 1287 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1288 ACCESS4args *, args); 1289 1290 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1291 if (cs->access == CS_ACCESS_DENIED) { 1292 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1293 goto out; 1294 } 1295 #endif 1296 if (cs->vp == NULL) { 1297 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1298 goto out; 1299 } 1300 1301 ASSERT(cr != NULL); 1302 1303 vp = cs->vp; 1304 1305 /* 1306 * If the file system is exported read only, it is not appropriate 1307 * to check write permissions for regular files and directories. 1308 * Special files are interpreted by the client, so the underlying 1309 * permissions are sent back to the client for interpretation. 1310 */ 1311 if (rdonly4(req, cs) && 1312 (vp->v_type == VREG || vp->v_type == VDIR)) 1313 checkwriteperm = 0; 1314 else 1315 checkwriteperm = 1; 1316 1317 /* 1318 * XXX 1319 * We need the mode so that we can correctly determine access 1320 * permissions relative to a mandatory lock file. Access to 1321 * mandatory lock files is denied on the server, so it might 1322 * as well be reflected to the server during the open. 1323 */ 1324 va.va_mask = AT_MODE; 1325 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1326 if (error) { 1327 *cs->statusp = resp->status = puterrno4(error); 1328 goto out; 1329 } 1330 resp->access = 0; 1331 resp->supported = 0; 1332 1333 if (is_system_labeled()) { 1334 ASSERT(req->rq_label != NULL); 1335 clabel = req->rq_label; 1336 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1337 "got client label from request(1)", 1338 struct svc_req *, req); 1339 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1340 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1341 *cs->statusp = resp->status = puterrno4(EACCES); 1342 goto out; 1343 } 1344 slabel = label2bslabel(tslabel); 1345 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1346 char *, "got server label(1) for vp(2)", 1347 bslabel_t *, slabel, vnode_t *, vp); 1348 1349 admin_low_client = B_FALSE; 1350 } else 1351 admin_low_client = B_TRUE; 1352 } 1353 1354 if (args->access & ACCESS4_READ) { 1355 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1356 if (!error && !MANDLOCK(vp, va.va_mode) && 1357 (!is_system_labeled() || admin_low_client || 1358 bldominates(clabel, slabel))) 1359 resp->access |= ACCESS4_READ; 1360 resp->supported |= ACCESS4_READ; 1361 } 1362 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1363 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1364 if (!error && (!is_system_labeled() || admin_low_client || 1365 bldominates(clabel, slabel))) 1366 resp->access |= ACCESS4_LOOKUP; 1367 resp->supported |= ACCESS4_LOOKUP; 1368 } 1369 if (checkwriteperm && 1370 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1371 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1372 if (!error && !MANDLOCK(vp, va.va_mode) && 1373 (!is_system_labeled() || admin_low_client || 1374 blequal(clabel, slabel))) 1375 resp->access |= 1376 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1377 resp->supported |= 1378 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1379 } 1380 1381 if (checkwriteperm && 1382 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1383 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1384 if (!error && (!is_system_labeled() || admin_low_client || 1385 blequal(clabel, slabel))) 1386 resp->access |= ACCESS4_DELETE; 1387 resp->supported |= ACCESS4_DELETE; 1388 } 1389 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1390 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1391 if (!error && !MANDLOCK(vp, va.va_mode) && 1392 (!is_system_labeled() || admin_low_client || 1393 bldominates(clabel, slabel))) 1394 resp->access |= ACCESS4_EXECUTE; 1395 resp->supported |= ACCESS4_EXECUTE; 1396 } 1397 1398 if (is_system_labeled() && !admin_low_client) 1399 label_rele(tslabel); 1400 1401 *cs->statusp = resp->status = NFS4_OK; 1402 out: 1403 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1404 ACCESS4res *, resp); 1405 } 1406 1407 /* ARGSUSED */ 1408 static void 1409 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1410 struct compound_state *cs) 1411 { 1412 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1413 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1414 int error; 1415 vnode_t *vp = cs->vp; 1416 cred_t *cr = cs->cr; 1417 vattr_t va; 1418 1419 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1420 COMMIT4args *, args); 1421 1422 if (vp == NULL) { 1423 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1424 goto out; 1425 } 1426 if (cs->access == CS_ACCESS_DENIED) { 1427 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1428 goto out; 1429 } 1430 1431 if (args->offset + args->count < args->offset) { 1432 *cs->statusp = resp->status = NFS4ERR_INVAL; 1433 goto out; 1434 } 1435 1436 va.va_mask = AT_UID; 1437 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1438 1439 /* 1440 * If we can't get the attributes, then we can't do the 1441 * right access checking. So, we'll fail the request. 1442 */ 1443 if (error) { 1444 *cs->statusp = resp->status = puterrno4(error); 1445 goto out; 1446 } 1447 if (rdonly4(req, cs)) { 1448 *cs->statusp = resp->status = NFS4ERR_ROFS; 1449 goto out; 1450 } 1451 1452 if (vp->v_type != VREG) { 1453 if (vp->v_type == VDIR) 1454 resp->status = NFS4ERR_ISDIR; 1455 else 1456 resp->status = NFS4ERR_INVAL; 1457 *cs->statusp = resp->status; 1458 goto out; 1459 } 1460 1461 if (crgetuid(cr) != va.va_uid && 1462 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1463 *cs->statusp = resp->status = puterrno4(error); 1464 goto out; 1465 } 1466 1467 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1468 1469 if (error) { 1470 *cs->statusp = resp->status = puterrno4(error); 1471 goto out; 1472 } 1473 1474 *cs->statusp = resp->status = NFS4_OK; 1475 resp->writeverf = Write4verf; 1476 out: 1477 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1478 COMMIT4res *, resp); 1479 } 1480 1481 /* 1482 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1483 * was completed. It does the nfsv4 create for special files. 1484 */ 1485 /* ARGSUSED */ 1486 static vnode_t * 1487 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1488 struct compound_state *cs, vattr_t *vap, char *nm) 1489 { 1490 int error; 1491 cred_t *cr = cs->cr; 1492 vnode_t *dvp = cs->vp; 1493 vnode_t *vp = NULL; 1494 int mode; 1495 enum vcexcl excl; 1496 1497 switch (args->type) { 1498 case NF4CHR: 1499 case NF4BLK: 1500 if (secpolicy_sys_devices(cr) != 0) { 1501 *cs->statusp = resp->status = NFS4ERR_PERM; 1502 return (NULL); 1503 } 1504 if (args->type == NF4CHR) 1505 vap->va_type = VCHR; 1506 else 1507 vap->va_type = VBLK; 1508 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1509 args->ftype4_u.devdata.specdata2); 1510 vap->va_mask |= AT_RDEV; 1511 break; 1512 case NF4SOCK: 1513 vap->va_type = VSOCK; 1514 break; 1515 case NF4FIFO: 1516 vap->va_type = VFIFO; 1517 break; 1518 default: 1519 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1520 return (NULL); 1521 } 1522 1523 /* 1524 * Must specify the mode. 1525 */ 1526 if (!(vap->va_mask & AT_MODE)) { 1527 *cs->statusp = resp->status = NFS4ERR_INVAL; 1528 return (NULL); 1529 } 1530 1531 excl = EXCL; 1532 1533 mode = 0; 1534 1535 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1536 if (error) { 1537 *cs->statusp = resp->status = puterrno4(error); 1538 return (NULL); 1539 } 1540 return (vp); 1541 } 1542 1543 /* 1544 * nfsv4 create is used to create non-regular files. For regular files, 1545 * use nfsv4 open. 1546 */ 1547 /* ARGSUSED */ 1548 static void 1549 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1550 struct compound_state *cs) 1551 { 1552 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1553 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1554 int error; 1555 struct vattr bva, iva, iva2, ava, *vap; 1556 cred_t *cr = cs->cr; 1557 vnode_t *dvp = cs->vp; 1558 vnode_t *vp = NULL; 1559 vnode_t *realvp; 1560 char *nm, *lnm; 1561 uint_t len, llen; 1562 int syncval = 0; 1563 struct nfs4_svgetit_arg sarg; 1564 struct nfs4_ntov_table ntov; 1565 struct statvfs64 sb; 1566 nfsstat4 status; 1567 struct sockaddr *ca; 1568 char *name = NULL; 1569 char *lname = NULL; 1570 1571 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1572 CREATE4args *, args); 1573 1574 resp->attrset = 0; 1575 1576 if (dvp == NULL) { 1577 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1578 goto out; 1579 } 1580 1581 /* 1582 * If there is an unshared filesystem mounted on this vnode, 1583 * do not allow to create an object in this directory. 1584 */ 1585 if (vn_ismntpt(dvp)) { 1586 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1587 goto out; 1588 } 1589 1590 /* Verify that type is correct */ 1591 switch (args->type) { 1592 case NF4LNK: 1593 case NF4BLK: 1594 case NF4CHR: 1595 case NF4SOCK: 1596 case NF4FIFO: 1597 case NF4DIR: 1598 break; 1599 default: 1600 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1601 goto out; 1602 }; 1603 1604 if (cs->access == CS_ACCESS_DENIED) { 1605 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1606 goto out; 1607 } 1608 if (dvp->v_type != VDIR) { 1609 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1610 goto out; 1611 } 1612 status = utf8_dir_verify(&args->objname); 1613 if (status != NFS4_OK) { 1614 *cs->statusp = resp->status = status; 1615 goto out; 1616 } 1617 1618 if (rdonly4(req, cs)) { 1619 *cs->statusp = resp->status = NFS4ERR_ROFS; 1620 goto out; 1621 } 1622 1623 /* 1624 * Name of newly created object 1625 */ 1626 nm = utf8_to_fn(&args->objname, &len, NULL); 1627 if (nm == NULL) { 1628 *cs->statusp = resp->status = NFS4ERR_INVAL; 1629 goto out; 1630 } 1631 1632 if (len > MAXNAMELEN) { 1633 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1634 kmem_free(nm, len); 1635 goto out; 1636 } 1637 1638 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1639 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1640 MAXPATHLEN + 1); 1641 1642 if (name == NULL) { 1643 *cs->statusp = resp->status = NFS4ERR_INVAL; 1644 kmem_free(nm, len); 1645 goto out; 1646 } 1647 1648 resp->attrset = 0; 1649 1650 sarg.sbp = &sb; 1651 sarg.is_referral = B_FALSE; 1652 nfs4_ntov_table_init(&ntov); 1653 1654 status = do_rfs4_set_attrs(&resp->attrset, 1655 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1656 1657 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1658 status = NFS4ERR_INVAL; 1659 1660 if (status != NFS4_OK) { 1661 *cs->statusp = resp->status = status; 1662 if (name != nm) 1663 kmem_free(name, MAXPATHLEN + 1); 1664 kmem_free(nm, len); 1665 nfs4_ntov_table_free(&ntov, &sarg); 1666 resp->attrset = 0; 1667 goto out; 1668 } 1669 1670 /* Get "before" change value */ 1671 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1672 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1673 if (error) { 1674 *cs->statusp = resp->status = puterrno4(error); 1675 if (name != nm) 1676 kmem_free(name, MAXPATHLEN + 1); 1677 kmem_free(nm, len); 1678 nfs4_ntov_table_free(&ntov, &sarg); 1679 resp->attrset = 0; 1680 goto out; 1681 } 1682 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1683 1684 vap = sarg.vap; 1685 1686 /* 1687 * Set the default initial values for attributes when the parent 1688 * directory does not have the VSUID/VSGID bit set and they have 1689 * not been specified in createattrs. 1690 */ 1691 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1692 vap->va_uid = crgetuid(cr); 1693 vap->va_mask |= AT_UID; 1694 } 1695 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1696 vap->va_gid = crgetgid(cr); 1697 vap->va_mask |= AT_GID; 1698 } 1699 1700 vap->va_mask |= AT_TYPE; 1701 switch (args->type) { 1702 case NF4DIR: 1703 vap->va_type = VDIR; 1704 if ((vap->va_mask & AT_MODE) == 0) { 1705 vap->va_mode = 0700; /* default: owner rwx only */ 1706 vap->va_mask |= AT_MODE; 1707 } 1708 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1709 if (error) 1710 break; 1711 1712 /* 1713 * Get the initial "after" sequence number, if it fails, 1714 * set to zero 1715 */ 1716 iva.va_mask = AT_SEQ; 1717 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1718 iva.va_seq = 0; 1719 break; 1720 case NF4LNK: 1721 vap->va_type = VLNK; 1722 if ((vap->va_mask & AT_MODE) == 0) { 1723 vap->va_mode = 0700; /* default: owner rwx only */ 1724 vap->va_mask |= AT_MODE; 1725 } 1726 1727 /* 1728 * symlink names must be treated as data 1729 */ 1730 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1731 &llen, NULL); 1732 1733 if (lnm == NULL) { 1734 *cs->statusp = resp->status = NFS4ERR_INVAL; 1735 if (name != nm) 1736 kmem_free(name, MAXPATHLEN + 1); 1737 kmem_free(nm, len); 1738 nfs4_ntov_table_free(&ntov, &sarg); 1739 resp->attrset = 0; 1740 goto out; 1741 } 1742 1743 if (llen > MAXPATHLEN) { 1744 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1745 if (name != nm) 1746 kmem_free(name, MAXPATHLEN + 1); 1747 kmem_free(nm, len); 1748 kmem_free(lnm, llen); 1749 nfs4_ntov_table_free(&ntov, &sarg); 1750 resp->attrset = 0; 1751 goto out; 1752 } 1753 1754 lname = nfscmd_convname(ca, cs->exi, lnm, 1755 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1756 1757 if (lname == NULL) { 1758 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1759 if (name != nm) 1760 kmem_free(name, MAXPATHLEN + 1); 1761 kmem_free(nm, len); 1762 kmem_free(lnm, llen); 1763 nfs4_ntov_table_free(&ntov, &sarg); 1764 resp->attrset = 0; 1765 goto out; 1766 } 1767 1768 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1769 if (lname != lnm) 1770 kmem_free(lname, MAXPATHLEN + 1); 1771 kmem_free(lnm, llen); 1772 if (error) 1773 break; 1774 1775 /* 1776 * Get the initial "after" sequence number, if it fails, 1777 * set to zero 1778 */ 1779 iva.va_mask = AT_SEQ; 1780 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1781 iva.va_seq = 0; 1782 1783 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1784 NULL, NULL, NULL); 1785 if (error) 1786 break; 1787 1788 /* 1789 * va_seq is not safe over VOP calls, check it again 1790 * if it has changed zero out iva to force atomic = FALSE. 1791 */ 1792 iva2.va_mask = AT_SEQ; 1793 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1794 iva2.va_seq != iva.va_seq) 1795 iva.va_seq = 0; 1796 break; 1797 default: 1798 /* 1799 * probably a special file. 1800 */ 1801 if ((vap->va_mask & AT_MODE) == 0) { 1802 vap->va_mode = 0600; /* default: owner rw only */ 1803 vap->va_mask |= AT_MODE; 1804 } 1805 syncval = FNODSYNC; 1806 /* 1807 * We know this will only generate one VOP call 1808 */ 1809 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1810 1811 if (vp == NULL) { 1812 if (name != nm) 1813 kmem_free(name, MAXPATHLEN + 1); 1814 kmem_free(nm, len); 1815 nfs4_ntov_table_free(&ntov, &sarg); 1816 resp->attrset = 0; 1817 goto out; 1818 } 1819 1820 /* 1821 * Get the initial "after" sequence number, if it fails, 1822 * set to zero 1823 */ 1824 iva.va_mask = AT_SEQ; 1825 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1826 iva.va_seq = 0; 1827 1828 break; 1829 } 1830 if (name != nm) 1831 kmem_free(name, MAXPATHLEN + 1); 1832 kmem_free(nm, len); 1833 1834 if (error) { 1835 *cs->statusp = resp->status = puterrno4(error); 1836 } 1837 1838 /* 1839 * Force modified data and metadata out to stable storage. 1840 */ 1841 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1842 1843 if (resp->status != NFS4_OK) { 1844 if (vp != NULL) 1845 VN_RELE(vp); 1846 nfs4_ntov_table_free(&ntov, &sarg); 1847 resp->attrset = 0; 1848 goto out; 1849 } 1850 1851 /* 1852 * Finish setup of cinfo response, "before" value already set. 1853 * Get "after" change value, if it fails, simply return the 1854 * before value. 1855 */ 1856 ava.va_mask = AT_CTIME|AT_SEQ; 1857 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1858 ava.va_ctime = bva.va_ctime; 1859 ava.va_seq = 0; 1860 } 1861 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1862 1863 /* 1864 * True verification that object was created with correct 1865 * attrs is impossible. The attrs could have been changed 1866 * immediately after object creation. If attributes did 1867 * not verify, the only recourse for the server is to 1868 * destroy the object. Maybe if some attrs (like gid) 1869 * are set incorrectly, the object should be destroyed; 1870 * however, seems bad as a default policy. Do we really 1871 * want to destroy an object over one of the times not 1872 * verifying correctly? For these reasons, the server 1873 * currently sets bits in attrset for createattrs 1874 * that were set; however, no verification is done. 1875 * 1876 * vmask_to_nmask accounts for vattr bits set on create 1877 * [do_rfs4_set_attrs() only sets resp bits for 1878 * non-vattr/vfs bits.] 1879 * Mask off any bits set by default so as not to return 1880 * more attrset bits than were requested in createattrs 1881 */ 1882 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1883 resp->attrset &= args->createattrs.attrmask; 1884 nfs4_ntov_table_free(&ntov, &sarg); 1885 1886 error = makefh4(&cs->fh, vp, cs->exi); 1887 if (error) { 1888 *cs->statusp = resp->status = puterrno4(error); 1889 } 1890 1891 /* 1892 * The cinfo.atomic = TRUE only if we got no errors, we have 1893 * non-zero va_seq's, and it has incremented by exactly one 1894 * during the creation and it didn't change during the VOP_LOOKUP 1895 * or VOP_FSYNC. 1896 */ 1897 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1898 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1899 resp->cinfo.atomic = TRUE; 1900 else 1901 resp->cinfo.atomic = FALSE; 1902 1903 /* 1904 * Force modified metadata out to stable storage. 1905 * 1906 * if a underlying vp exists, pass it to VOP_FSYNC 1907 */ 1908 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1909 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1910 else 1911 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1912 1913 if (resp->status != NFS4_OK) { 1914 VN_RELE(vp); 1915 goto out; 1916 } 1917 if (cs->vp) 1918 VN_RELE(cs->vp); 1919 1920 cs->vp = vp; 1921 *cs->statusp = resp->status = NFS4_OK; 1922 out: 1923 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1924 CREATE4res *, resp); 1925 } 1926 1927 /*ARGSUSED*/ 1928 static void 1929 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1930 struct compound_state *cs) 1931 { 1932 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1933 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1934 1935 rfs4_op_inval(argop, resop, req, cs); 1936 1937 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1938 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1939 } 1940 1941 /*ARGSUSED*/ 1942 static void 1943 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1944 struct compound_state *cs) 1945 { 1946 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1947 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1948 rfs4_deleg_state_t *dsp; 1949 nfsstat4 status; 1950 1951 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1952 DELEGRETURN4args *, args); 1953 1954 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1955 resp->status = *cs->statusp = status; 1956 if (status != NFS4_OK) 1957 goto out; 1958 1959 /* Ensure specified filehandle matches */ 1960 if (cs->vp != dsp->rds_finfo->rf_vp) { 1961 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1962 } else 1963 rfs4_return_deleg(dsp, FALSE); 1964 1965 rfs4_update_lease(dsp->rds_client); 1966 1967 rfs4_deleg_state_rele(dsp); 1968 out: 1969 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1970 DELEGRETURN4res *, resp); 1971 } 1972 1973 /* 1974 * Check to see if a given "flavor" is an explicitly shared flavor. 1975 * The assumption of this routine is the "flavor" is already a valid 1976 * flavor in the secinfo list of "exi". 1977 * 1978 * e.g. 1979 * # share -o sec=flavor1 /export 1980 * # share -o sec=flavor2 /export/home 1981 * 1982 * flavor2 is not an explicitly shared flavor for /export, 1983 * however it is in the secinfo list for /export thru the 1984 * server namespace setup. 1985 */ 1986 int 1987 is_exported_sec(int flavor, struct exportinfo *exi) 1988 { 1989 int i; 1990 struct secinfo *sp; 1991 1992 sp = exi->exi_export.ex_secinfo; 1993 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1994 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1995 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1996 return (SEC_REF_EXPORTED(&sp[i])); 1997 } 1998 } 1999 2000 /* Should not reach this point based on the assumption */ 2001 return (0); 2002 } 2003 2004 /* 2005 * Check if the security flavor used in the request matches what is 2006 * required at the export point or at the root pseudo node (exi_root). 2007 * 2008 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 2009 * 2010 */ 2011 static int 2012 secinfo_match_or_authnone(struct compound_state *cs) 2013 { 2014 int i; 2015 struct secinfo *sp; 2016 2017 /* 2018 * Check cs->nfsflavor (from the request) against 2019 * the current export data in cs->exi. 2020 */ 2021 sp = cs->exi->exi_export.ex_secinfo; 2022 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 2023 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2024 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 2025 return (1); 2026 } 2027 2028 return (0); 2029 } 2030 2031 /* 2032 * Check the access authority for the client and return the correct error. 2033 */ 2034 nfsstat4 2035 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2036 { 2037 int authres; 2038 2039 /* 2040 * First, check if the security flavor used in the request 2041 * are among the flavors set in the server namespace. 2042 */ 2043 if (!secinfo_match_or_authnone(cs)) { 2044 *cs->statusp = NFS4ERR_WRONGSEC; 2045 return (*cs->statusp); 2046 } 2047 2048 authres = checkauth4(cs, req); 2049 2050 if (authres > 0) { 2051 *cs->statusp = NFS4_OK; 2052 if (! (cs->access & CS_ACCESS_LIMITED)) 2053 cs->access = CS_ACCESS_OK; 2054 } else if (authres == 0) { 2055 *cs->statusp = NFS4ERR_ACCESS; 2056 } else if (authres == -2) { 2057 *cs->statusp = NFS4ERR_WRONGSEC; 2058 } else { 2059 *cs->statusp = NFS4ERR_DELAY; 2060 } 2061 return (*cs->statusp); 2062 } 2063 2064 /* 2065 * bitmap4_to_attrmask is called by getattr and readdir. 2066 * It sets up the vattr mask and determines whether vfsstat call is needed 2067 * based on the input bitmap. 2068 * Returns nfsv4 status. 2069 */ 2070 static nfsstat4 2071 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2072 { 2073 int i; 2074 uint_t va_mask; 2075 struct statvfs64 *sbp = sargp->sbp; 2076 2077 sargp->sbp = NULL; 2078 sargp->flag = 0; 2079 sargp->rdattr_error = NFS4_OK; 2080 sargp->mntdfid_set = FALSE; 2081 if (sargp->cs->vp) 2082 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2083 FH4_ATTRDIR | FH4_NAMEDATTR); 2084 else 2085 sargp->xattr = 0; 2086 2087 /* 2088 * Set rdattr_error_req to true if return error per 2089 * failed entry rather than fail the readdir. 2090 */ 2091 if (breq & FATTR4_RDATTR_ERROR_MASK) 2092 sargp->rdattr_error_req = 1; 2093 else 2094 sargp->rdattr_error_req = 0; 2095 2096 /* 2097 * generate the va_mask 2098 * Handle the easy cases first 2099 */ 2100 switch (breq) { 2101 case NFS4_NTOV_ATTR_MASK: 2102 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2103 return (NFS4_OK); 2104 2105 case NFS4_FS_ATTR_MASK: 2106 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2107 sargp->sbp = sbp; 2108 return (NFS4_OK); 2109 2110 case NFS4_NTOV_ATTR_CACHE_MASK: 2111 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2112 return (NFS4_OK); 2113 2114 case FATTR4_LEASE_TIME_MASK: 2115 sargp->vap->va_mask = 0; 2116 return (NFS4_OK); 2117 2118 default: 2119 va_mask = 0; 2120 for (i = 0; i < nfs4_ntov_map_size; i++) { 2121 if ((breq & nfs4_ntov_map[i].fbit) && 2122 nfs4_ntov_map[i].vbit) 2123 va_mask |= nfs4_ntov_map[i].vbit; 2124 } 2125 2126 /* 2127 * Check is vfsstat is needed 2128 */ 2129 if (breq & NFS4_FS_ATTR_MASK) 2130 sargp->sbp = sbp; 2131 2132 sargp->vap->va_mask = va_mask; 2133 return (NFS4_OK); 2134 } 2135 /* NOTREACHED */ 2136 } 2137 2138 /* 2139 * bitmap4_get_sysattrs is called by getattr and readdir. 2140 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2141 * Returns nfsv4 status. 2142 */ 2143 static nfsstat4 2144 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2145 { 2146 int error; 2147 struct compound_state *cs = sargp->cs; 2148 vnode_t *vp = cs->vp; 2149 2150 if (sargp->sbp != NULL) { 2151 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2152 sargp->sbp = NULL; /* to identify error */ 2153 return (puterrno4(error)); 2154 } 2155 } 2156 2157 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2158 } 2159 2160 static void 2161 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2162 { 2163 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2164 KM_SLEEP); 2165 ntovp->attrcnt = 0; 2166 ntovp->vfsstat = FALSE; 2167 } 2168 2169 static void 2170 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2171 struct nfs4_svgetit_arg *sargp) 2172 { 2173 int i; 2174 union nfs4_attr_u *na; 2175 uint8_t *amap; 2176 2177 /* 2178 * XXX Should do the same checks for whether the bit is set 2179 */ 2180 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2181 i < ntovp->attrcnt; i++, na++, amap++) { 2182 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2183 NFS4ATTR_FREEIT, sargp, na); 2184 } 2185 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2186 /* 2187 * xdr_free for getattr will be done later 2188 */ 2189 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2190 i < ntovp->attrcnt; i++, na++, amap++) { 2191 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2192 } 2193 } 2194 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2195 } 2196 2197 /* 2198 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2199 */ 2200 static nfsstat4 2201 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2202 struct nfs4_svgetit_arg *sargp) 2203 { 2204 int error = 0; 2205 int i, k; 2206 struct nfs4_ntov_table ntov; 2207 XDR xdr; 2208 ulong_t xdr_size; 2209 char *xdr_attrs; 2210 nfsstat4 status = NFS4_OK; 2211 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2212 union nfs4_attr_u *na; 2213 uint8_t *amap; 2214 2215 sargp->op = NFS4ATTR_GETIT; 2216 sargp->flag = 0; 2217 2218 fattrp->attrmask = 0; 2219 /* if no bits requested, then return empty fattr4 */ 2220 if (breq == 0) { 2221 fattrp->attrlist4_len = 0; 2222 fattrp->attrlist4 = NULL; 2223 return (NFS4_OK); 2224 } 2225 2226 /* 2227 * return NFS4ERR_INVAL when client requests write-only attrs 2228 */ 2229 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2230 return (NFS4ERR_INVAL); 2231 2232 nfs4_ntov_table_init(&ntov); 2233 na = ntov.na; 2234 amap = ntov.amap; 2235 2236 /* 2237 * Now loop to get or verify the attrs 2238 */ 2239 for (i = 0; i < nfs4_ntov_map_size; i++) { 2240 if (breq & nfs4_ntov_map[i].fbit) { 2241 if ((*nfs4_ntov_map[i].sv_getit)( 2242 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2243 2244 error = (*nfs4_ntov_map[i].sv_getit)( 2245 NFS4ATTR_GETIT, sargp, na); 2246 2247 /* 2248 * Possible error values: 2249 * >0 if sv_getit failed to 2250 * get the attr; 0 if succeeded; 2251 * <0 if rdattr_error and the 2252 * attribute cannot be returned. 2253 */ 2254 if (error && !(sargp->rdattr_error_req)) 2255 goto done; 2256 /* 2257 * If error then just for entry 2258 */ 2259 if (error == 0) { 2260 fattrp->attrmask |= 2261 nfs4_ntov_map[i].fbit; 2262 *amap++ = 2263 (uint8_t)nfs4_ntov_map[i].nval; 2264 na++; 2265 (ntov.attrcnt)++; 2266 } else if ((error > 0) && 2267 (sargp->rdattr_error == NFS4_OK)) { 2268 sargp->rdattr_error = puterrno4(error); 2269 } 2270 error = 0; 2271 } 2272 } 2273 } 2274 2275 /* 2276 * If rdattr_error was set after the return value for it was assigned, 2277 * update it. 2278 */ 2279 if (prev_rdattr_error != sargp->rdattr_error) { 2280 na = ntov.na; 2281 amap = ntov.amap; 2282 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2283 k = *amap; 2284 if (k < FATTR4_RDATTR_ERROR) { 2285 continue; 2286 } 2287 if ((k == FATTR4_RDATTR_ERROR) && 2288 ((*nfs4_ntov_map[k].sv_getit)( 2289 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2290 2291 (void) (*nfs4_ntov_map[k].sv_getit)( 2292 NFS4ATTR_GETIT, sargp, na); 2293 } 2294 break; 2295 } 2296 } 2297 2298 xdr_size = 0; 2299 na = ntov.na; 2300 amap = ntov.amap; 2301 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2302 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2303 } 2304 2305 fattrp->attrlist4_len = xdr_size; 2306 if (xdr_size) { 2307 /* freed by rfs4_op_getattr_free() */ 2308 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2309 2310 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2311 2312 na = ntov.na; 2313 amap = ntov.amap; 2314 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2315 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2316 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2317 int, *amap); 2318 status = NFS4ERR_SERVERFAULT; 2319 break; 2320 } 2321 } 2322 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2323 } else { 2324 fattrp->attrlist4 = NULL; 2325 } 2326 done: 2327 2328 nfs4_ntov_table_free(&ntov, sargp); 2329 2330 if (error != 0) 2331 status = puterrno4(error); 2332 2333 return (status); 2334 } 2335 2336 /* ARGSUSED */ 2337 static void 2338 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2339 struct compound_state *cs) 2340 { 2341 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2342 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2343 struct nfs4_svgetit_arg sarg; 2344 struct statvfs64 sb; 2345 nfsstat4 status; 2346 2347 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2348 GETATTR4args *, args); 2349 2350 if (cs->vp == NULL) { 2351 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2352 goto out; 2353 } 2354 2355 if (cs->access == CS_ACCESS_DENIED) { 2356 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2357 goto out; 2358 } 2359 2360 sarg.sbp = &sb; 2361 sarg.cs = cs; 2362 sarg.is_referral = B_FALSE; 2363 2364 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2365 if (status == NFS4_OK) { 2366 2367 status = bitmap4_get_sysattrs(&sarg); 2368 if (status == NFS4_OK) { 2369 2370 /* Is this a referral? */ 2371 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2372 /* Older V4 Solaris client sees a link */ 2373 if (client_is_downrev(req)) 2374 sarg.vap->va_type = VLNK; 2375 else 2376 sarg.is_referral = B_TRUE; 2377 } 2378 2379 status = do_rfs4_op_getattr(args->attr_request, 2380 &resp->obj_attributes, &sarg); 2381 } 2382 } 2383 *cs->statusp = resp->status = status; 2384 out: 2385 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2386 GETATTR4res *, resp); 2387 } 2388 2389 static void 2390 rfs4_op_getattr_free(nfs_resop4 *resop) 2391 { 2392 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2393 2394 nfs4_fattr4_free(&resp->obj_attributes); 2395 } 2396 2397 /* ARGSUSED */ 2398 static void 2399 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2400 struct compound_state *cs) 2401 { 2402 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2403 2404 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2405 2406 if (cs->vp == NULL) { 2407 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2408 goto out; 2409 } 2410 if (cs->access == CS_ACCESS_DENIED) { 2411 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2412 goto out; 2413 } 2414 2415 /* check for reparse point at the share point */ 2416 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2417 /* it's all bad */ 2418 cs->exi->exi_moved = 1; 2419 *cs->statusp = resp->status = NFS4ERR_MOVED; 2420 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2421 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2422 return; 2423 } 2424 2425 /* check for reparse point at vp */ 2426 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2427 /* it's not all bad */ 2428 *cs->statusp = resp->status = NFS4ERR_MOVED; 2429 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2430 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2431 return; 2432 } 2433 2434 resp->object.nfs_fh4_val = 2435 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2436 nfs_fh4_copy(&cs->fh, &resp->object); 2437 *cs->statusp = resp->status = NFS4_OK; 2438 out: 2439 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2440 GETFH4res *, resp); 2441 } 2442 2443 static void 2444 rfs4_op_getfh_free(nfs_resop4 *resop) 2445 { 2446 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2447 2448 if (resp->status == NFS4_OK && 2449 resp->object.nfs_fh4_val != NULL) { 2450 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2451 resp->object.nfs_fh4_val = NULL; 2452 resp->object.nfs_fh4_len = 0; 2453 } 2454 } 2455 2456 /* 2457 * illegal: args: void 2458 * res : status (NFS4ERR_OP_ILLEGAL) 2459 */ 2460 /* ARGSUSED */ 2461 static void 2462 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2463 struct svc_req *req, struct compound_state *cs) 2464 { 2465 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2466 2467 resop->resop = OP_ILLEGAL; 2468 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2469 } 2470 2471 /* 2472 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2473 * res: status. If success - CURRENT_FH unchanged, return change_info 2474 */ 2475 /* ARGSUSED */ 2476 static void 2477 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2478 struct compound_state *cs) 2479 { 2480 LINK4args *args = &argop->nfs_argop4_u.oplink; 2481 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2482 int error; 2483 vnode_t *vp; 2484 vnode_t *dvp; 2485 struct vattr bdva, idva, adva; 2486 char *nm; 2487 uint_t len; 2488 struct sockaddr *ca; 2489 char *name = NULL; 2490 nfsstat4 status; 2491 2492 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2493 LINK4args *, args); 2494 2495 /* SAVED_FH: source object */ 2496 vp = cs->saved_vp; 2497 if (vp == NULL) { 2498 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2499 goto out; 2500 } 2501 2502 /* CURRENT_FH: target directory */ 2503 dvp = cs->vp; 2504 if (dvp == NULL) { 2505 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2506 goto out; 2507 } 2508 2509 /* 2510 * If there is a non-shared filesystem mounted on this vnode, 2511 * do not allow to link any file in this directory. 2512 */ 2513 if (vn_ismntpt(dvp)) { 2514 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2515 goto out; 2516 } 2517 2518 if (cs->access == CS_ACCESS_DENIED) { 2519 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2520 goto out; 2521 } 2522 2523 /* Check source object's type validity */ 2524 if (vp->v_type == VDIR) { 2525 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2526 goto out; 2527 } 2528 2529 /* Check target directory's type */ 2530 if (dvp->v_type != VDIR) { 2531 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2532 goto out; 2533 } 2534 2535 if (cs->saved_exi != cs->exi) { 2536 *cs->statusp = resp->status = NFS4ERR_XDEV; 2537 goto out; 2538 } 2539 2540 status = utf8_dir_verify(&args->newname); 2541 if (status != NFS4_OK) { 2542 *cs->statusp = resp->status = status; 2543 goto out; 2544 } 2545 2546 nm = utf8_to_fn(&args->newname, &len, NULL); 2547 if (nm == NULL) { 2548 *cs->statusp = resp->status = NFS4ERR_INVAL; 2549 goto out; 2550 } 2551 2552 if (len > MAXNAMELEN) { 2553 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2554 kmem_free(nm, len); 2555 goto out; 2556 } 2557 2558 if (rdonly4(req, cs)) { 2559 *cs->statusp = resp->status = NFS4ERR_ROFS; 2560 kmem_free(nm, len); 2561 goto out; 2562 } 2563 2564 /* Get "before" change value */ 2565 bdva.va_mask = AT_CTIME|AT_SEQ; 2566 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2567 if (error) { 2568 *cs->statusp = resp->status = puterrno4(error); 2569 kmem_free(nm, len); 2570 goto out; 2571 } 2572 2573 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2574 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2575 MAXPATHLEN + 1); 2576 2577 if (name == NULL) { 2578 *cs->statusp = resp->status = NFS4ERR_INVAL; 2579 kmem_free(nm, len); 2580 goto out; 2581 } 2582 2583 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2584 2585 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2586 2587 if (nm != name) 2588 kmem_free(name, MAXPATHLEN + 1); 2589 kmem_free(nm, len); 2590 2591 /* 2592 * Get the initial "after" sequence number, if it fails, set to zero 2593 */ 2594 idva.va_mask = AT_SEQ; 2595 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2596 idva.va_seq = 0; 2597 2598 /* 2599 * Force modified data and metadata out to stable storage. 2600 */ 2601 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2602 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2603 2604 if (error) { 2605 *cs->statusp = resp->status = puterrno4(error); 2606 goto out; 2607 } 2608 2609 /* 2610 * Get "after" change value, if it fails, simply return the 2611 * before value. 2612 */ 2613 adva.va_mask = AT_CTIME|AT_SEQ; 2614 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2615 adva.va_ctime = bdva.va_ctime; 2616 adva.va_seq = 0; 2617 } 2618 2619 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2620 2621 /* 2622 * The cinfo.atomic = TRUE only if we have 2623 * non-zero va_seq's, and it has incremented by exactly one 2624 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2625 */ 2626 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2627 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2628 resp->cinfo.atomic = TRUE; 2629 else 2630 resp->cinfo.atomic = FALSE; 2631 2632 *cs->statusp = resp->status = NFS4_OK; 2633 out: 2634 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2635 LINK4res *, resp); 2636 } 2637 2638 /* 2639 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2640 */ 2641 2642 /* ARGSUSED */ 2643 static nfsstat4 2644 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2645 { 2646 int error; 2647 int different_export = 0; 2648 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2649 struct exportinfo *exi = NULL, *pre_exi = NULL; 2650 nfsstat4 stat; 2651 fid_t fid; 2652 int attrdir, dotdot, walk; 2653 bool_t is_newvp = FALSE; 2654 2655 if (cs->vp->v_flag & V_XATTRDIR) { 2656 attrdir = 1; 2657 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2658 } else { 2659 attrdir = 0; 2660 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2661 } 2662 2663 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2664 2665 /* 2666 * If dotdotting, then need to check whether it's 2667 * above the root of a filesystem, or above an 2668 * export point. 2669 */ 2670 if (dotdot) { 2671 2672 /* 2673 * If dotdotting at the root of a filesystem, then 2674 * need to traverse back to the mounted-on filesystem 2675 * and do the dotdot lookup there. 2676 */ 2677 if (cs->vp->v_flag & VROOT) { 2678 2679 /* 2680 * If at the system root, then can 2681 * go up no further. 2682 */ 2683 if (VN_CMP(cs->vp, rootdir)) 2684 return (puterrno4(ENOENT)); 2685 2686 /* 2687 * Traverse back to the mounted-on filesystem 2688 */ 2689 cs->vp = untraverse(cs->vp); 2690 2691 /* 2692 * Set the different_export flag so we remember 2693 * to pick up a new exportinfo entry for 2694 * this new filesystem. 2695 */ 2696 different_export = 1; 2697 } else { 2698 2699 /* 2700 * If dotdotting above an export point then set 2701 * the different_export to get new export info. 2702 */ 2703 different_export = nfs_exported(cs->exi, cs->vp); 2704 } 2705 } 2706 2707 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2708 NULL, NULL, NULL); 2709 if (error) 2710 return (puterrno4(error)); 2711 2712 /* 2713 * If the vnode is in a pseudo filesystem, check whether it is visible. 2714 * 2715 * XXX if the vnode is a symlink and it is not visible in 2716 * a pseudo filesystem, return ENOENT (not following symlink). 2717 * V4 client can not mount such symlink. This is a regression 2718 * from V2/V3. 2719 * 2720 * In the same exported filesystem, if the security flavor used 2721 * is not an explicitly shared flavor, limit the view to the visible 2722 * list entries only. This is not a WRONGSEC case because it's already 2723 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2724 */ 2725 if (!different_export && 2726 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2727 cs->access & CS_ACCESS_LIMITED)) { 2728 if (! nfs_visible(cs->exi, vp, &different_export)) { 2729 VN_RELE(vp); 2730 return (puterrno4(ENOENT)); 2731 } 2732 } 2733 2734 /* 2735 * If it's a mountpoint, then traverse it. 2736 */ 2737 if (vn_ismntpt(vp)) { 2738 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2739 pre_tvp = vp; /* save pre-traversed vnode */ 2740 2741 /* 2742 * hold pre_tvp to counteract rele by traverse. We will 2743 * need pre_tvp below if checkexport4 fails 2744 */ 2745 VN_HOLD(pre_tvp); 2746 if ((error = traverse(&vp)) != 0) { 2747 VN_RELE(vp); 2748 VN_RELE(pre_tvp); 2749 return (puterrno4(error)); 2750 } 2751 different_export = 1; 2752 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2753 /* 2754 * The vfsp comparison is to handle the case where 2755 * a LOFS mount is shared. lo_lookup traverses mount points, 2756 * and NFS is unaware of local fs transistions because 2757 * v_vfsmountedhere isn't set. For this special LOFS case, 2758 * the dir and the obj returned by lookup will have different 2759 * vfs ptrs. 2760 */ 2761 different_export = 1; 2762 } 2763 2764 if (different_export) { 2765 2766 bzero(&fid, sizeof (fid)); 2767 fid.fid_len = MAXFIDSZ; 2768 error = vop_fid_pseudo(vp, &fid); 2769 if (error) { 2770 VN_RELE(vp); 2771 if (pre_tvp) 2772 VN_RELE(pre_tvp); 2773 return (puterrno4(error)); 2774 } 2775 2776 if (dotdot) 2777 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2778 else 2779 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2780 2781 if (exi == NULL) { 2782 if (pre_tvp) { 2783 /* 2784 * If this vnode is a mounted-on vnode, 2785 * but the mounted-on file system is not 2786 * exported, send back the filehandle for 2787 * the mounted-on vnode, not the root of 2788 * the mounted-on file system. 2789 */ 2790 VN_RELE(vp); 2791 vp = pre_tvp; 2792 exi = pre_exi; 2793 } else { 2794 VN_RELE(vp); 2795 return (puterrno4(EACCES)); 2796 } 2797 } else if (pre_tvp) { 2798 /* we're done with pre_tvp now. release extra hold */ 2799 VN_RELE(pre_tvp); 2800 } 2801 2802 cs->exi = exi; 2803 2804 /* 2805 * Now we do a checkauth4. The reason is that 2806 * this client/user may not have access to the new 2807 * exported file system, and if he does, 2808 * the client/user may be mapped to a different uid. 2809 * 2810 * We start with a new cr, because the checkauth4 done 2811 * in the PUT*FH operation over wrote the cred's uid, 2812 * gid, etc, and we want the real thing before calling 2813 * checkauth4() 2814 */ 2815 crfree(cs->cr); 2816 cs->cr = crdup(cs->basecr); 2817 2818 oldvp = cs->vp; 2819 cs->vp = vp; 2820 is_newvp = TRUE; 2821 2822 stat = call_checkauth4(cs, req); 2823 if (stat != NFS4_OK) { 2824 VN_RELE(cs->vp); 2825 cs->vp = oldvp; 2826 return (stat); 2827 } 2828 } 2829 2830 /* 2831 * After various NFS checks, do a label check on the path 2832 * component. The label on this path should either be the 2833 * global zone's label or a zone's label. We are only 2834 * interested in the zone's label because exported files 2835 * in global zone is accessible (though read-only) to 2836 * clients. The exportability/visibility check is already 2837 * done before reaching this code. 2838 */ 2839 if (is_system_labeled()) { 2840 bslabel_t *clabel; 2841 2842 ASSERT(req->rq_label != NULL); 2843 clabel = req->rq_label; 2844 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2845 "got client label from request(1)", struct svc_req *, req); 2846 2847 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2848 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2849 cs->exi)) { 2850 error = EACCES; 2851 goto err_out; 2852 } 2853 } else { 2854 /* 2855 * We grant access to admin_low label clients 2856 * only if the client is trusted, i.e. also 2857 * running Solaris Trusted Extension. 2858 */ 2859 struct sockaddr *ca; 2860 int addr_type; 2861 void *ipaddr; 2862 tsol_tpc_t *tp; 2863 2864 ca = (struct sockaddr *)svc_getrpccaller( 2865 req->rq_xprt)->buf; 2866 if (ca->sa_family == AF_INET) { 2867 addr_type = IPV4_VERSION; 2868 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2869 } else if (ca->sa_family == AF_INET6) { 2870 addr_type = IPV6_VERSION; 2871 ipaddr = &((struct sockaddr_in6 *) 2872 ca)->sin6_addr; 2873 } 2874 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2875 if (tp == NULL || tp->tpc_tp.tp_doi != 2876 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2877 SUN_CIPSO) { 2878 if (tp != NULL) 2879 TPC_RELE(tp); 2880 error = EACCES; 2881 goto err_out; 2882 } 2883 TPC_RELE(tp); 2884 } 2885 } 2886 2887 error = makefh4(&cs->fh, vp, cs->exi); 2888 2889 err_out: 2890 if (error) { 2891 if (is_newvp) { 2892 VN_RELE(cs->vp); 2893 cs->vp = oldvp; 2894 } else 2895 VN_RELE(vp); 2896 return (puterrno4(error)); 2897 } 2898 2899 if (!is_newvp) { 2900 if (cs->vp) 2901 VN_RELE(cs->vp); 2902 cs->vp = vp; 2903 } else if (oldvp) 2904 VN_RELE(oldvp); 2905 2906 /* 2907 * if did lookup on attrdir and didn't lookup .., set named 2908 * attr fh flag 2909 */ 2910 if (attrdir && ! dotdot) 2911 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2912 2913 /* Assume false for now, open proc will set this */ 2914 cs->mandlock = FALSE; 2915 2916 return (NFS4_OK); 2917 } 2918 2919 /* ARGSUSED */ 2920 static void 2921 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2922 struct compound_state *cs) 2923 { 2924 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2925 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2926 char *nm; 2927 uint_t len; 2928 struct sockaddr *ca; 2929 char *name = NULL; 2930 nfsstat4 status; 2931 2932 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2933 LOOKUP4args *, args); 2934 2935 if (cs->vp == NULL) { 2936 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2937 goto out; 2938 } 2939 2940 if (cs->vp->v_type == VLNK) { 2941 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2942 goto out; 2943 } 2944 2945 if (cs->vp->v_type != VDIR) { 2946 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2947 goto out; 2948 } 2949 2950 status = utf8_dir_verify(&args->objname); 2951 if (status != NFS4_OK) { 2952 *cs->statusp = resp->status = status; 2953 goto out; 2954 } 2955 2956 nm = utf8_to_str(&args->objname, &len, NULL); 2957 if (nm == NULL) { 2958 *cs->statusp = resp->status = NFS4ERR_INVAL; 2959 goto out; 2960 } 2961 2962 if (len > MAXNAMELEN) { 2963 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2964 kmem_free(nm, len); 2965 goto out; 2966 } 2967 2968 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2969 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2970 MAXPATHLEN + 1); 2971 2972 if (name == NULL) { 2973 *cs->statusp = resp->status = NFS4ERR_INVAL; 2974 kmem_free(nm, len); 2975 goto out; 2976 } 2977 2978 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2979 2980 if (name != nm) 2981 kmem_free(name, MAXPATHLEN + 1); 2982 kmem_free(nm, len); 2983 2984 out: 2985 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2986 LOOKUP4res *, resp); 2987 } 2988 2989 /* ARGSUSED */ 2990 static void 2991 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2992 struct compound_state *cs) 2993 { 2994 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2995 2996 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2997 2998 if (cs->vp == NULL) { 2999 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3000 goto out; 3001 } 3002 3003 if (cs->vp->v_type != VDIR) { 3004 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3005 goto out; 3006 } 3007 3008 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3009 3010 /* 3011 * From NFSV4 Specification, LOOKUPP should not check for 3012 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3013 */ 3014 if (resp->status == NFS4ERR_WRONGSEC) { 3015 *cs->statusp = resp->status = NFS4_OK; 3016 } 3017 3018 out: 3019 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3020 LOOKUPP4res *, resp); 3021 } 3022 3023 3024 /*ARGSUSED2*/ 3025 static void 3026 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3027 struct compound_state *cs) 3028 { 3029 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3030 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3031 vnode_t *avp = NULL; 3032 int lookup_flags = LOOKUP_XATTR, error; 3033 int exp_ro = 0; 3034 3035 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3036 OPENATTR4args *, args); 3037 3038 if (cs->vp == NULL) { 3039 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3040 goto out; 3041 } 3042 3043 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3044 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3045 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3046 goto out; 3047 } 3048 3049 /* 3050 * If file system supports passing ACE mask to VOP_ACCESS then 3051 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3052 */ 3053 3054 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3055 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3056 V_ACE_MASK, cs->cr, NULL); 3057 else 3058 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3059 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3060 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3061 3062 if (error) { 3063 *cs->statusp = resp->status = puterrno4(EACCES); 3064 goto out; 3065 } 3066 3067 /* 3068 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3069 * the file system is exported read-only -- regardless of 3070 * createdir flag. Otherwise the attrdir would be created 3071 * (assuming server fs isn't mounted readonly locally). If 3072 * VOP_LOOKUP returns ENOENT in this case, the error will 3073 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3074 * because specfs has no VOP_LOOKUP op, so the macro would 3075 * return ENOSYS. EINVAL is returned by all (current) 3076 * Solaris file system implementations when any of their 3077 * restrictions are violated (xattr(dir) can't have xattrdir). 3078 * Returning NOTSUPP is more appropriate in this case 3079 * because the object will never be able to have an attrdir. 3080 */ 3081 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3082 lookup_flags |= CREATE_XATTR_DIR; 3083 3084 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3085 NULL, NULL, NULL); 3086 3087 if (error) { 3088 if (error == ENOENT && args->createdir && exp_ro) 3089 *cs->statusp = resp->status = puterrno4(EROFS); 3090 else if (error == EINVAL || error == ENOSYS) 3091 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3092 else 3093 *cs->statusp = resp->status = puterrno4(error); 3094 goto out; 3095 } 3096 3097 ASSERT(avp->v_flag & V_XATTRDIR); 3098 3099 error = makefh4(&cs->fh, avp, cs->exi); 3100 3101 if (error) { 3102 VN_RELE(avp); 3103 *cs->statusp = resp->status = puterrno4(error); 3104 goto out; 3105 } 3106 3107 VN_RELE(cs->vp); 3108 cs->vp = avp; 3109 3110 /* 3111 * There is no requirement for an attrdir fh flag 3112 * because the attrdir has a vnode flag to distinguish 3113 * it from regular (non-xattr) directories. The 3114 * FH4_ATTRDIR flag is set for future sanity checks. 3115 */ 3116 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3117 *cs->statusp = resp->status = NFS4_OK; 3118 3119 out: 3120 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3121 OPENATTR4res *, resp); 3122 } 3123 3124 static int 3125 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3126 caller_context_t *ct) 3127 { 3128 int error; 3129 int i; 3130 clock_t delaytime; 3131 3132 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3133 3134 /* 3135 * Don't block on mandatory locks. If this routine returns 3136 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3137 */ 3138 uio->uio_fmode = FNONBLOCK; 3139 3140 for (i = 0; i < rfs4_maxlock_tries; i++) { 3141 3142 3143 if (direction == FREAD) { 3144 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3145 error = VOP_READ(vp, uio, ioflag, cred, ct); 3146 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3147 } else { 3148 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3149 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3150 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3151 } 3152 3153 if (error != EAGAIN) 3154 break; 3155 3156 if (i < rfs4_maxlock_tries - 1) { 3157 delay(delaytime); 3158 delaytime *= 2; 3159 } 3160 } 3161 3162 return (error); 3163 } 3164 3165 /* ARGSUSED */ 3166 static void 3167 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3168 struct compound_state *cs) 3169 { 3170 READ4args *args = &argop->nfs_argop4_u.opread; 3171 READ4res *resp = &resop->nfs_resop4_u.opread; 3172 int error; 3173 int verror; 3174 vnode_t *vp; 3175 struct vattr va; 3176 struct iovec iov, *iovp = NULL; 3177 int iovcnt; 3178 struct uio uio; 3179 u_offset_t offset; 3180 bool_t *deleg = &cs->deleg; 3181 nfsstat4 stat; 3182 int in_crit = 0; 3183 mblk_t *mp = NULL; 3184 int alloc_err = 0; 3185 int rdma_used = 0; 3186 int loaned_buffers; 3187 caller_context_t ct; 3188 struct uio *uiop; 3189 3190 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3191 READ4args, args); 3192 3193 vp = cs->vp; 3194 if (vp == NULL) { 3195 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3196 goto out; 3197 } 3198 if (cs->access == CS_ACCESS_DENIED) { 3199 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3200 goto out; 3201 } 3202 3203 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3204 deleg, TRUE, &ct)) != NFS4_OK) { 3205 *cs->statusp = resp->status = stat; 3206 goto out; 3207 } 3208 3209 /* 3210 * Enter the critical region before calling VOP_RWLOCK 3211 * to avoid a deadlock with write requests. 3212 */ 3213 if (nbl_need_check(vp)) { 3214 nbl_start_crit(vp, RW_READER); 3215 in_crit = 1; 3216 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3217 &ct)) { 3218 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3219 goto out; 3220 } 3221 } 3222 3223 if (args->wlist) { 3224 if (args->count > clist_len(args->wlist)) { 3225 *cs->statusp = resp->status = NFS4ERR_INVAL; 3226 goto out; 3227 } 3228 rdma_used = 1; 3229 } 3230 3231 /* use loaned buffers for TCP */ 3232 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3233 3234 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3235 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3236 3237 /* 3238 * If we can't get the attributes, then we can't do the 3239 * right access checking. So, we'll fail the request. 3240 */ 3241 if (verror) { 3242 *cs->statusp = resp->status = puterrno4(verror); 3243 goto out; 3244 } 3245 3246 if (vp->v_type != VREG) { 3247 *cs->statusp = resp->status = 3248 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3249 goto out; 3250 } 3251 3252 if (crgetuid(cs->cr) != va.va_uid && 3253 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3254 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3255 *cs->statusp = resp->status = puterrno4(error); 3256 goto out; 3257 } 3258 3259 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3260 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3261 goto out; 3262 } 3263 3264 offset = args->offset; 3265 if (offset >= va.va_size) { 3266 *cs->statusp = resp->status = NFS4_OK; 3267 resp->eof = TRUE; 3268 resp->data_len = 0; 3269 resp->data_val = NULL; 3270 resp->mblk = NULL; 3271 /* RDMA */ 3272 resp->wlist = args->wlist; 3273 resp->wlist_len = resp->data_len; 3274 *cs->statusp = resp->status = NFS4_OK; 3275 if (resp->wlist) 3276 clist_zero_len(resp->wlist); 3277 goto out; 3278 } 3279 3280 if (args->count == 0) { 3281 *cs->statusp = resp->status = NFS4_OK; 3282 resp->eof = FALSE; 3283 resp->data_len = 0; 3284 resp->data_val = NULL; 3285 resp->mblk = NULL; 3286 /* RDMA */ 3287 resp->wlist = args->wlist; 3288 resp->wlist_len = resp->data_len; 3289 if (resp->wlist) 3290 clist_zero_len(resp->wlist); 3291 goto out; 3292 } 3293 3294 /* 3295 * Do not allocate memory more than maximum allowed 3296 * transfer size 3297 */ 3298 if (args->count > rfs4_tsize(req)) 3299 args->count = rfs4_tsize(req); 3300 3301 if (loaned_buffers) { 3302 uiop = (uio_t *)rfs_setup_xuio(vp); 3303 ASSERT(uiop != NULL); 3304 uiop->uio_segflg = UIO_SYSSPACE; 3305 uiop->uio_loffset = args->offset; 3306 uiop->uio_resid = args->count; 3307 3308 /* Jump to do the read if successful */ 3309 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3310 /* 3311 * Need to hold the vnode until after VOP_RETZCBUF() 3312 * is called. 3313 */ 3314 VN_HOLD(vp); 3315 goto doio_read; 3316 } 3317 3318 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3319 uiop->uio_loffset, int, uiop->uio_resid); 3320 3321 uiop->uio_extflg = 0; 3322 3323 /* failure to setup for zero copy */ 3324 rfs_free_xuio((void *)uiop); 3325 loaned_buffers = 0; 3326 } 3327 3328 /* 3329 * If returning data via RDMA Write, then grab the chunk list. If we 3330 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3331 */ 3332 if (rdma_used) { 3333 mp = NULL; 3334 (void) rdma_get_wchunk(req, &iov, args->wlist); 3335 uio.uio_iov = &iov; 3336 uio.uio_iovcnt = 1; 3337 } else { 3338 /* 3339 * mp will contain the data to be sent out in the read reply. 3340 * It will be freed after the reply has been sent. 3341 */ 3342 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3343 ASSERT(mp != NULL); 3344 ASSERT(alloc_err == 0); 3345 uio.uio_iov = iovp; 3346 uio.uio_iovcnt = iovcnt; 3347 } 3348 3349 uio.uio_segflg = UIO_SYSSPACE; 3350 uio.uio_extflg = UIO_COPY_CACHED; 3351 uio.uio_loffset = args->offset; 3352 uio.uio_resid = args->count; 3353 uiop = &uio; 3354 3355 doio_read: 3356 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3357 3358 va.va_mask = AT_SIZE; 3359 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3360 3361 if (error) { 3362 if (mp) 3363 freemsg(mp); 3364 *cs->statusp = resp->status = puterrno4(error); 3365 goto out; 3366 } 3367 3368 /* make mblk using zc buffers */ 3369 if (loaned_buffers) { 3370 mp = uio_to_mblk(uiop); 3371 ASSERT(mp != NULL); 3372 } 3373 3374 *cs->statusp = resp->status = NFS4_OK; 3375 3376 ASSERT(uiop->uio_resid >= 0); 3377 resp->data_len = args->count - uiop->uio_resid; 3378 if (mp) { 3379 resp->data_val = (char *)mp->b_datap->db_base; 3380 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3381 } else { 3382 resp->data_val = (caddr_t)iov.iov_base; 3383 } 3384 3385 resp->mblk = mp; 3386 3387 if (!verror && offset + resp->data_len == va.va_size) 3388 resp->eof = TRUE; 3389 else 3390 resp->eof = FALSE; 3391 3392 if (rdma_used) { 3393 if (!rdma_setup_read_data4(args, resp)) { 3394 *cs->statusp = resp->status = NFS4ERR_INVAL; 3395 } 3396 } else { 3397 resp->wlist = NULL; 3398 } 3399 3400 out: 3401 if (in_crit) 3402 nbl_end_crit(vp); 3403 3404 if (iovp != NULL) 3405 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3406 3407 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3408 READ4res *, resp); 3409 } 3410 3411 static void 3412 rfs4_op_read_free(nfs_resop4 *resop) 3413 { 3414 READ4res *resp = &resop->nfs_resop4_u.opread; 3415 3416 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3417 freemsg(resp->mblk); 3418 resp->mblk = NULL; 3419 resp->data_val = NULL; 3420 resp->data_len = 0; 3421 } 3422 } 3423 3424 static void 3425 rfs4_op_readdir_free(nfs_resop4 * resop) 3426 { 3427 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3428 3429 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3430 freeb(resp->mblk); 3431 resp->mblk = NULL; 3432 resp->data_len = 0; 3433 } 3434 } 3435 3436 3437 /* ARGSUSED */ 3438 static void 3439 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3440 struct compound_state *cs) 3441 { 3442 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3443 int error; 3444 vnode_t *vp; 3445 struct exportinfo *exi, *sav_exi; 3446 nfs_fh4_fmt_t *fh_fmtp; 3447 3448 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3449 3450 if (cs->vp) { 3451 VN_RELE(cs->vp); 3452 cs->vp = NULL; 3453 } 3454 3455 if (cs->cr) 3456 crfree(cs->cr); 3457 3458 cs->cr = crdup(cs->basecr); 3459 3460 vp = exi_public->exi_vp; 3461 if (vp == NULL) { 3462 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3463 goto out; 3464 } 3465 3466 error = makefh4(&cs->fh, vp, exi_public); 3467 if (error != 0) { 3468 *cs->statusp = resp->status = puterrno4(error); 3469 goto out; 3470 } 3471 sav_exi = cs->exi; 3472 if (exi_public == exi_root) { 3473 /* 3474 * No filesystem is actually shared public, so we default 3475 * to exi_root. In this case, we must check whether root 3476 * is exported. 3477 */ 3478 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3479 3480 /* 3481 * if root filesystem is exported, the exportinfo struct that we 3482 * should use is what checkexport4 returns, because root_exi is 3483 * actually a mostly empty struct. 3484 */ 3485 exi = checkexport4(&fh_fmtp->fh4_fsid, 3486 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3487 cs->exi = ((exi != NULL) ? exi : exi_public); 3488 } else { 3489 /* 3490 * it's a properly shared filesystem 3491 */ 3492 cs->exi = exi_public; 3493 } 3494 3495 if (is_system_labeled()) { 3496 bslabel_t *clabel; 3497 3498 ASSERT(req->rq_label != NULL); 3499 clabel = req->rq_label; 3500 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3501 "got client label from request(1)", 3502 struct svc_req *, req); 3503 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3504 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3505 cs->exi)) { 3506 *cs->statusp = resp->status = 3507 NFS4ERR_SERVERFAULT; 3508 goto out; 3509 } 3510 } 3511 } 3512 3513 VN_HOLD(vp); 3514 cs->vp = vp; 3515 3516 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3517 VN_RELE(cs->vp); 3518 cs->vp = NULL; 3519 cs->exi = sav_exi; 3520 goto out; 3521 } 3522 3523 *cs->statusp = resp->status = NFS4_OK; 3524 out: 3525 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3526 PUTPUBFH4res *, resp); 3527 } 3528 3529 /* 3530 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3531 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3532 * or joe have restrictive search permissions, then we shouldn't let 3533 * the client get a file handle. This is easy to enforce. However, we 3534 * don't know what security flavor should be used until we resolve the 3535 * path name. Another complication is uid mapping. If root is 3536 * the user, then it will be mapped to the anonymous user by default, 3537 * but we won't know that till we've resolved the path name. And we won't 3538 * know what the anonymous user is. 3539 * Luckily, SECINFO is specified to take a full filename. 3540 * So what we will have to in rfs4_op_lookup is check that flavor of 3541 * the target object matches that of the request, and if root was the 3542 * caller, check for the root= and anon= options, and if necessary, 3543 * repeat the lookup using the right cred_t. But that's not done yet. 3544 */ 3545 /* ARGSUSED */ 3546 static void 3547 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3548 struct compound_state *cs) 3549 { 3550 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3551 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3552 nfs_fh4_fmt_t *fh_fmtp; 3553 3554 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3555 PUTFH4args *, args); 3556 3557 if (cs->vp) { 3558 VN_RELE(cs->vp); 3559 cs->vp = NULL; 3560 } 3561 3562 if (cs->cr) { 3563 crfree(cs->cr); 3564 cs->cr = NULL; 3565 } 3566 3567 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3568 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3569 goto out; 3570 } 3571 3572 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3573 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3574 NULL); 3575 3576 if (cs->exi == NULL) { 3577 *cs->statusp = resp->status = NFS4ERR_STALE; 3578 goto out; 3579 } 3580 3581 cs->cr = crdup(cs->basecr); 3582 3583 ASSERT(cs->cr != NULL); 3584 3585 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3586 *cs->statusp = resp->status; 3587 goto out; 3588 } 3589 3590 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3591 VN_RELE(cs->vp); 3592 cs->vp = NULL; 3593 goto out; 3594 } 3595 3596 nfs_fh4_copy(&args->object, &cs->fh); 3597 *cs->statusp = resp->status = NFS4_OK; 3598 cs->deleg = FALSE; 3599 3600 out: 3601 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3602 PUTFH4res *, resp); 3603 } 3604 3605 /* ARGSUSED */ 3606 static void 3607 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3608 struct compound_state *cs) 3609 { 3610 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3611 int error; 3612 fid_t fid; 3613 struct exportinfo *exi, *sav_exi; 3614 3615 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3616 3617 if (cs->vp) { 3618 VN_RELE(cs->vp); 3619 cs->vp = NULL; 3620 } 3621 3622 if (cs->cr) 3623 crfree(cs->cr); 3624 3625 cs->cr = crdup(cs->basecr); 3626 3627 /* 3628 * Using rootdir, the system root vnode, 3629 * get its fid. 3630 */ 3631 bzero(&fid, sizeof (fid)); 3632 fid.fid_len = MAXFIDSZ; 3633 error = vop_fid_pseudo(rootdir, &fid); 3634 if (error != 0) { 3635 *cs->statusp = resp->status = puterrno4(error); 3636 goto out; 3637 } 3638 3639 /* 3640 * Then use the root fsid & fid it to find out if it's exported 3641 * 3642 * If the server root isn't exported directly, then 3643 * it should at least be a pseudo export based on 3644 * one or more exports further down in the server's 3645 * file tree. 3646 */ 3647 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3648 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3649 NFS4_DEBUG(rfs4_debug, 3650 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3651 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3652 goto out; 3653 } 3654 3655 /* 3656 * Now make a filehandle based on the root 3657 * export and root vnode. 3658 */ 3659 error = makefh4(&cs->fh, rootdir, exi); 3660 if (error != 0) { 3661 *cs->statusp = resp->status = puterrno4(error); 3662 goto out; 3663 } 3664 3665 sav_exi = cs->exi; 3666 cs->exi = exi; 3667 3668 VN_HOLD(rootdir); 3669 cs->vp = rootdir; 3670 3671 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3672 VN_RELE(rootdir); 3673 cs->vp = NULL; 3674 cs->exi = sav_exi; 3675 goto out; 3676 } 3677 3678 *cs->statusp = resp->status = NFS4_OK; 3679 cs->deleg = FALSE; 3680 out: 3681 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3682 PUTROOTFH4res *, resp); 3683 } 3684 3685 /* 3686 * set_rdattr_params sets up the variables used to manage what information 3687 * to get for each directory entry. 3688 */ 3689 static nfsstat4 3690 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3691 bitmap4 attrs, bool_t *need_to_lookup) 3692 { 3693 uint_t va_mask; 3694 nfsstat4 status; 3695 bitmap4 objbits; 3696 3697 status = bitmap4_to_attrmask(attrs, sargp); 3698 if (status != NFS4_OK) { 3699 /* 3700 * could not even figure attr mask 3701 */ 3702 return (status); 3703 } 3704 va_mask = sargp->vap->va_mask; 3705 3706 /* 3707 * dirent's d_ino is always correct value for mounted_on_fileid. 3708 * mntdfid_set is set once here, but mounted_on_fileid is 3709 * set in main dirent processing loop for each dirent. 3710 * The mntdfid_set is a simple optimization that lets the 3711 * server attr code avoid work when caller is readdir. 3712 */ 3713 sargp->mntdfid_set = TRUE; 3714 3715 /* 3716 * Lookup entry only if client asked for any of the following: 3717 * a) vattr attrs 3718 * b) vfs attrs 3719 * c) attrs w/per-object scope requested (change, filehandle, etc) 3720 * other than mounted_on_fileid (which we can take from dirent) 3721 */ 3722 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3723 3724 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3725 *need_to_lookup = TRUE; 3726 else 3727 *need_to_lookup = FALSE; 3728 3729 if (sargp->sbp == NULL) 3730 return (NFS4_OK); 3731 3732 /* 3733 * If filesystem attrs are requested, get them now from the 3734 * directory vp, as most entries will have same filesystem. The only 3735 * exception are mounted over entries but we handle 3736 * those as we go (XXX mounted over detection not yet implemented). 3737 */ 3738 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3739 status = bitmap4_get_sysattrs(sargp); 3740 sargp->vap->va_mask = va_mask; 3741 3742 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3743 /* 3744 * Failed to get filesystem attributes. 3745 * Return a rdattr_error for each entry, but don't fail. 3746 * However, don't get any obj-dependent attrs. 3747 */ 3748 sargp->rdattr_error = status; /* for rdattr_error */ 3749 *need_to_lookup = FALSE; 3750 /* 3751 * At least get fileid for regular readdir output 3752 */ 3753 sargp->vap->va_mask &= AT_NODEID; 3754 status = NFS4_OK; 3755 } 3756 3757 return (status); 3758 } 3759 3760 /* 3761 * readlink: args: CURRENT_FH. 3762 * res: status. If success - CURRENT_FH unchanged, return linktext. 3763 */ 3764 3765 /* ARGSUSED */ 3766 static void 3767 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3768 struct compound_state *cs) 3769 { 3770 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3771 int error; 3772 vnode_t *vp; 3773 struct iovec iov; 3774 struct vattr va; 3775 struct uio uio; 3776 char *data; 3777 struct sockaddr *ca; 3778 char *name = NULL; 3779 int is_referral; 3780 3781 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3782 3783 /* CURRENT_FH: directory */ 3784 vp = cs->vp; 3785 if (vp == NULL) { 3786 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3787 goto out; 3788 } 3789 3790 if (cs->access == CS_ACCESS_DENIED) { 3791 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3792 goto out; 3793 } 3794 3795 /* Is it a referral? */ 3796 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3797 3798 is_referral = 1; 3799 3800 } else { 3801 3802 is_referral = 0; 3803 3804 if (vp->v_type == VDIR) { 3805 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3806 goto out; 3807 } 3808 3809 if (vp->v_type != VLNK) { 3810 *cs->statusp = resp->status = NFS4ERR_INVAL; 3811 goto out; 3812 } 3813 3814 } 3815 3816 va.va_mask = AT_MODE; 3817 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3818 if (error) { 3819 *cs->statusp = resp->status = puterrno4(error); 3820 goto out; 3821 } 3822 3823 if (MANDLOCK(vp, va.va_mode)) { 3824 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3825 goto out; 3826 } 3827 3828 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3829 3830 if (is_referral) { 3831 char *s; 3832 size_t strsz; 3833 3834 /* Get an artificial symlink based on a referral */ 3835 s = build_symlink(vp, cs->cr, &strsz); 3836 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3837 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3838 vnode_t *, vp, char *, s); 3839 if (s == NULL) 3840 error = EINVAL; 3841 else { 3842 error = 0; 3843 (void) strlcpy(data, s, MAXPATHLEN + 1); 3844 kmem_free(s, strsz); 3845 } 3846 3847 } else { 3848 3849 iov.iov_base = data; 3850 iov.iov_len = MAXPATHLEN; 3851 uio.uio_iov = &iov; 3852 uio.uio_iovcnt = 1; 3853 uio.uio_segflg = UIO_SYSSPACE; 3854 uio.uio_extflg = UIO_COPY_CACHED; 3855 uio.uio_loffset = 0; 3856 uio.uio_resid = MAXPATHLEN; 3857 3858 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3859 3860 if (!error) 3861 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3862 } 3863 3864 if (error) { 3865 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3866 *cs->statusp = resp->status = puterrno4(error); 3867 goto out; 3868 } 3869 3870 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3871 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3872 MAXPATHLEN + 1); 3873 3874 if (name == NULL) { 3875 /* 3876 * Even though the conversion failed, we return 3877 * something. We just don't translate it. 3878 */ 3879 name = data; 3880 } 3881 3882 /* 3883 * treat link name as data 3884 */ 3885 (void) str_to_utf8(name, (utf8string *)&resp->link); 3886 3887 if (name != data) 3888 kmem_free(name, MAXPATHLEN + 1); 3889 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3890 *cs->statusp = resp->status = NFS4_OK; 3891 3892 out: 3893 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3894 READLINK4res *, resp); 3895 } 3896 3897 static void 3898 rfs4_op_readlink_free(nfs_resop4 *resop) 3899 { 3900 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3901 utf8string *symlink = (utf8string *)&resp->link; 3902 3903 if (symlink->utf8string_val) { 3904 UTF8STRING_FREE(*symlink) 3905 } 3906 } 3907 3908 /* 3909 * release_lockowner: 3910 * Release any state associated with the supplied 3911 * lockowner. Note if any lo_state is holding locks we will not 3912 * rele that lo_state and thus the lockowner will not be destroyed. 3913 * A client using lock after the lock owner stateid has been released 3914 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3915 * to reissue the lock with new_lock_owner set to TRUE. 3916 * args: lock_owner 3917 * res: status 3918 */ 3919 /* ARGSUSED */ 3920 static void 3921 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3922 struct svc_req *req, struct compound_state *cs) 3923 { 3924 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3925 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3926 rfs4_lockowner_t *lo; 3927 rfs4_openowner_t *oo; 3928 rfs4_state_t *sp; 3929 rfs4_lo_state_t *lsp; 3930 rfs4_client_t *cp; 3931 bool_t create = FALSE; 3932 locklist_t *llist; 3933 sysid_t sysid; 3934 3935 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3936 cs, RELEASE_LOCKOWNER4args *, ap); 3937 3938 /* Make sure there is a clientid around for this request */ 3939 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3940 3941 if (cp == NULL) { 3942 *cs->statusp = resp->status = 3943 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3944 goto out; 3945 } 3946 rfs4_client_rele(cp); 3947 3948 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3949 if (lo == NULL) { 3950 *cs->statusp = resp->status = NFS4_OK; 3951 goto out; 3952 } 3953 ASSERT(lo->rl_client != NULL); 3954 3955 /* 3956 * Check for EXPIRED client. If so will reap state with in a lease 3957 * period or on next set_clientid_confirm step 3958 */ 3959 if (rfs4_lease_expired(lo->rl_client)) { 3960 rfs4_lockowner_rele(lo); 3961 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3962 goto out; 3963 } 3964 3965 /* 3966 * If no sysid has been assigned, then no locks exist; just return. 3967 */ 3968 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3969 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3970 rfs4_lockowner_rele(lo); 3971 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3972 goto out; 3973 } 3974 3975 sysid = lo->rl_client->rc_sysidt; 3976 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3977 3978 /* 3979 * Mark the lockowner invalid. 3980 */ 3981 rfs4_dbe_hide(lo->rl_dbe); 3982 3983 /* 3984 * sysid-pid pair should now not be used since the lockowner is 3985 * invalid. If the client were to instantiate the lockowner again 3986 * it would be assigned a new pid. Thus we can get the list of 3987 * current locks. 3988 */ 3989 3990 llist = flk_get_active_locks(sysid, lo->rl_pid); 3991 /* If we are still holding locks fail */ 3992 if (llist != NULL) { 3993 3994 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3995 3996 flk_free_locklist(llist); 3997 /* 3998 * We need to unhide the lockowner so the client can 3999 * try it again. The bad thing here is if the client 4000 * has a logic error that took it here in the first place 4001 * he probably has lost accounting of the locks that it 4002 * is holding. So we may have dangling state until the 4003 * open owner state is reaped via close. One scenario 4004 * that could possibly occur is that the client has 4005 * sent the unlock request(s) in separate threads 4006 * and has not waited for the replies before sending the 4007 * RELEASE_LOCKOWNER request. Presumably, it would expect 4008 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4009 * reissuing the request. 4010 */ 4011 rfs4_dbe_unhide(lo->rl_dbe); 4012 rfs4_lockowner_rele(lo); 4013 goto out; 4014 } 4015 4016 /* 4017 * For the corresponding client we need to check each open 4018 * owner for any opens that have lockowner state associated 4019 * with this lockowner. 4020 */ 4021 4022 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4023 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4024 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4025 4026 rfs4_dbe_lock(oo->ro_dbe); 4027 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4028 sp = list_next(&oo->ro_statelist, sp)) { 4029 4030 rfs4_dbe_lock(sp->rs_dbe); 4031 for (lsp = list_head(&sp->rs_lostatelist); 4032 lsp != NULL; 4033 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4034 if (lsp->rls_locker == lo) { 4035 rfs4_dbe_lock(lsp->rls_dbe); 4036 rfs4_dbe_invalidate(lsp->rls_dbe); 4037 rfs4_dbe_unlock(lsp->rls_dbe); 4038 } 4039 } 4040 rfs4_dbe_unlock(sp->rs_dbe); 4041 } 4042 rfs4_dbe_unlock(oo->ro_dbe); 4043 } 4044 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4045 4046 rfs4_lockowner_rele(lo); 4047 4048 *cs->statusp = resp->status = NFS4_OK; 4049 4050 out: 4051 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4052 cs, RELEASE_LOCKOWNER4res *, resp); 4053 } 4054 4055 /* 4056 * short utility function to lookup a file and recall the delegation 4057 */ 4058 static rfs4_file_t * 4059 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4060 int *lkup_error, cred_t *cr) 4061 { 4062 vnode_t *vp; 4063 rfs4_file_t *fp = NULL; 4064 bool_t fcreate = FALSE; 4065 int error; 4066 4067 if (vpp) 4068 *vpp = NULL; 4069 4070 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4071 NULL)) == 0) { 4072 if (vp->v_type == VREG) 4073 fp = rfs4_findfile(vp, NULL, &fcreate); 4074 if (vpp) 4075 *vpp = vp; 4076 else 4077 VN_RELE(vp); 4078 } 4079 4080 if (lkup_error) 4081 *lkup_error = error; 4082 4083 return (fp); 4084 } 4085 4086 /* 4087 * remove: args: CURRENT_FH: directory; name. 4088 * res: status. If success - CURRENT_FH unchanged, return change_info 4089 * for directory. 4090 */ 4091 /* ARGSUSED */ 4092 static void 4093 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4094 struct compound_state *cs) 4095 { 4096 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4097 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4098 int error; 4099 vnode_t *dvp, *vp; 4100 struct vattr bdva, idva, adva; 4101 char *nm; 4102 uint_t len; 4103 rfs4_file_t *fp; 4104 int in_crit = 0; 4105 bslabel_t *clabel; 4106 struct sockaddr *ca; 4107 char *name = NULL; 4108 nfsstat4 status; 4109 4110 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4111 REMOVE4args *, args); 4112 4113 /* CURRENT_FH: directory */ 4114 dvp = cs->vp; 4115 if (dvp == NULL) { 4116 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4117 goto out; 4118 } 4119 4120 if (cs->access == CS_ACCESS_DENIED) { 4121 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4122 goto out; 4123 } 4124 4125 /* 4126 * If there is an unshared filesystem mounted on this vnode, 4127 * Do not allow to remove anything in this directory. 4128 */ 4129 if (vn_ismntpt(dvp)) { 4130 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4131 goto out; 4132 } 4133 4134 if (dvp->v_type != VDIR) { 4135 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4136 goto out; 4137 } 4138 4139 status = utf8_dir_verify(&args->target); 4140 if (status != NFS4_OK) { 4141 *cs->statusp = resp->status = status; 4142 goto out; 4143 } 4144 4145 /* 4146 * Lookup the file so that we can check if it's a directory 4147 */ 4148 nm = utf8_to_fn(&args->target, &len, NULL); 4149 if (nm == NULL) { 4150 *cs->statusp = resp->status = NFS4ERR_INVAL; 4151 goto out; 4152 } 4153 4154 if (len > MAXNAMELEN) { 4155 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4156 kmem_free(nm, len); 4157 goto out; 4158 } 4159 4160 if (rdonly4(req, cs)) { 4161 *cs->statusp = resp->status = NFS4ERR_ROFS; 4162 kmem_free(nm, len); 4163 goto out; 4164 } 4165 4166 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4167 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4168 MAXPATHLEN + 1); 4169 4170 if (name == NULL) { 4171 *cs->statusp = resp->status = NFS4ERR_INVAL; 4172 kmem_free(nm, len); 4173 goto out; 4174 } 4175 4176 /* 4177 * Lookup the file to determine type and while we are see if 4178 * there is a file struct around and check for delegation. 4179 * We don't need to acquire va_seq before this lookup, if 4180 * it causes an update, cinfo.before will not match, which will 4181 * trigger a cache flush even if atomic is TRUE. 4182 */ 4183 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4184 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4185 NULL)) { 4186 VN_RELE(vp); 4187 rfs4_file_rele(fp); 4188 *cs->statusp = resp->status = NFS4ERR_DELAY; 4189 if (nm != name) 4190 kmem_free(name, MAXPATHLEN + 1); 4191 kmem_free(nm, len); 4192 goto out; 4193 } 4194 } 4195 4196 /* Didn't find anything to remove */ 4197 if (vp == NULL) { 4198 *cs->statusp = resp->status = error; 4199 if (nm != name) 4200 kmem_free(name, MAXPATHLEN + 1); 4201 kmem_free(nm, len); 4202 goto out; 4203 } 4204 4205 if (nbl_need_check(vp)) { 4206 nbl_start_crit(vp, RW_READER); 4207 in_crit = 1; 4208 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4209 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4210 if (nm != name) 4211 kmem_free(name, MAXPATHLEN + 1); 4212 kmem_free(nm, len); 4213 nbl_end_crit(vp); 4214 VN_RELE(vp); 4215 if (fp) { 4216 rfs4_clear_dont_grant(fp); 4217 rfs4_file_rele(fp); 4218 } 4219 goto out; 4220 } 4221 } 4222 4223 /* check label before allowing removal */ 4224 if (is_system_labeled()) { 4225 ASSERT(req->rq_label != NULL); 4226 clabel = req->rq_label; 4227 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4228 "got client label from request(1)", 4229 struct svc_req *, req); 4230 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4231 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4232 cs->exi)) { 4233 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4234 if (name != nm) 4235 kmem_free(name, MAXPATHLEN + 1); 4236 kmem_free(nm, len); 4237 if (in_crit) 4238 nbl_end_crit(vp); 4239 VN_RELE(vp); 4240 if (fp) { 4241 rfs4_clear_dont_grant(fp); 4242 rfs4_file_rele(fp); 4243 } 4244 goto out; 4245 } 4246 } 4247 } 4248 4249 /* Get dir "before" change value */ 4250 bdva.va_mask = AT_CTIME|AT_SEQ; 4251 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4252 if (error) { 4253 *cs->statusp = resp->status = puterrno4(error); 4254 if (nm != name) 4255 kmem_free(name, MAXPATHLEN + 1); 4256 kmem_free(nm, len); 4257 if (in_crit) 4258 nbl_end_crit(vp); 4259 VN_RELE(vp); 4260 if (fp) { 4261 rfs4_clear_dont_grant(fp); 4262 rfs4_file_rele(fp); 4263 } 4264 goto out; 4265 } 4266 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4267 4268 /* Actually do the REMOVE operation */ 4269 if (vp->v_type == VDIR) { 4270 /* 4271 * Can't remove a directory that has a mounted-on filesystem. 4272 */ 4273 if (vn_ismntpt(vp)) { 4274 error = EACCES; 4275 } else { 4276 /* 4277 * System V defines rmdir to return EEXIST, 4278 * not ENOTEMPTY, if the directory is not 4279 * empty. A System V NFS server needs to map 4280 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4281 * transmit over the wire. 4282 */ 4283 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4284 NULL, 0)) == EEXIST) 4285 error = ENOTEMPTY; 4286 } 4287 } else { 4288 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4289 fp != NULL) { 4290 struct vattr va; 4291 vnode_t *tvp; 4292 4293 rfs4_dbe_lock(fp->rf_dbe); 4294 tvp = fp->rf_vp; 4295 if (tvp) 4296 VN_HOLD(tvp); 4297 rfs4_dbe_unlock(fp->rf_dbe); 4298 4299 if (tvp) { 4300 /* 4301 * This is va_seq safe because we are not 4302 * manipulating dvp. 4303 */ 4304 va.va_mask = AT_NLINK; 4305 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4306 va.va_nlink == 0) { 4307 /* Remove state on file remove */ 4308 if (in_crit) { 4309 nbl_end_crit(vp); 4310 in_crit = 0; 4311 } 4312 rfs4_close_all_state(fp); 4313 } 4314 VN_RELE(tvp); 4315 } 4316 } 4317 } 4318 4319 if (in_crit) 4320 nbl_end_crit(vp); 4321 VN_RELE(vp); 4322 4323 if (fp) { 4324 rfs4_clear_dont_grant(fp); 4325 rfs4_file_rele(fp); 4326 } 4327 if (nm != name) 4328 kmem_free(name, MAXPATHLEN + 1); 4329 kmem_free(nm, len); 4330 4331 if (error) { 4332 *cs->statusp = resp->status = puterrno4(error); 4333 goto out; 4334 } 4335 4336 /* 4337 * Get the initial "after" sequence number, if it fails, set to zero 4338 */ 4339 idva.va_mask = AT_SEQ; 4340 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4341 idva.va_seq = 0; 4342 4343 /* 4344 * Force modified data and metadata out to stable storage. 4345 */ 4346 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4347 4348 /* 4349 * Get "after" change value, if it fails, simply return the 4350 * before value. 4351 */ 4352 adva.va_mask = AT_CTIME|AT_SEQ; 4353 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4354 adva.va_ctime = bdva.va_ctime; 4355 adva.va_seq = 0; 4356 } 4357 4358 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4359 4360 /* 4361 * The cinfo.atomic = TRUE only if we have 4362 * non-zero va_seq's, and it has incremented by exactly one 4363 * during the VOP_REMOVE/RMDIR and it didn't change during 4364 * the VOP_FSYNC. 4365 */ 4366 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4367 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4368 resp->cinfo.atomic = TRUE; 4369 else 4370 resp->cinfo.atomic = FALSE; 4371 4372 *cs->statusp = resp->status = NFS4_OK; 4373 4374 out: 4375 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4376 REMOVE4res *, resp); 4377 } 4378 4379 /* 4380 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4381 * oldname and newname. 4382 * res: status. If success - CURRENT_FH unchanged, return change_info 4383 * for both from and target directories. 4384 */ 4385 /* ARGSUSED */ 4386 static void 4387 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4388 struct compound_state *cs) 4389 { 4390 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4391 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4392 int error; 4393 vnode_t *odvp; 4394 vnode_t *ndvp; 4395 vnode_t *srcvp, *targvp; 4396 struct vattr obdva, oidva, oadva; 4397 struct vattr nbdva, nidva, nadva; 4398 char *onm, *nnm; 4399 uint_t olen, nlen; 4400 rfs4_file_t *fp, *sfp; 4401 int in_crit_src, in_crit_targ; 4402 int fp_rele_grant_hold, sfp_rele_grant_hold; 4403 bslabel_t *clabel; 4404 struct sockaddr *ca; 4405 char *converted_onm = NULL; 4406 char *converted_nnm = NULL; 4407 nfsstat4 status; 4408 4409 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4410 RENAME4args *, args); 4411 4412 fp = sfp = NULL; 4413 srcvp = targvp = NULL; 4414 in_crit_src = in_crit_targ = 0; 4415 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4416 4417 /* CURRENT_FH: target directory */ 4418 ndvp = cs->vp; 4419 if (ndvp == NULL) { 4420 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4421 goto out; 4422 } 4423 4424 /* SAVED_FH: from directory */ 4425 odvp = cs->saved_vp; 4426 if (odvp == NULL) { 4427 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4428 goto out; 4429 } 4430 4431 if (cs->access == CS_ACCESS_DENIED) { 4432 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4433 goto out; 4434 } 4435 4436 /* 4437 * If there is an unshared filesystem mounted on this vnode, 4438 * do not allow to rename objects in this directory. 4439 */ 4440 if (vn_ismntpt(odvp)) { 4441 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4442 goto out; 4443 } 4444 4445 /* 4446 * If there is an unshared filesystem mounted on this vnode, 4447 * do not allow to rename to this directory. 4448 */ 4449 if (vn_ismntpt(ndvp)) { 4450 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4451 goto out; 4452 } 4453 4454 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4455 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4456 goto out; 4457 } 4458 4459 if (cs->saved_exi != cs->exi) { 4460 *cs->statusp = resp->status = NFS4ERR_XDEV; 4461 goto out; 4462 } 4463 4464 status = utf8_dir_verify(&args->oldname); 4465 if (status != NFS4_OK) { 4466 *cs->statusp = resp->status = status; 4467 goto out; 4468 } 4469 4470 status = utf8_dir_verify(&args->newname); 4471 if (status != NFS4_OK) { 4472 *cs->statusp = resp->status = status; 4473 goto out; 4474 } 4475 4476 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4477 if (onm == NULL) { 4478 *cs->statusp = resp->status = NFS4ERR_INVAL; 4479 goto out; 4480 } 4481 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4482 nlen = MAXPATHLEN + 1; 4483 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4484 nlen); 4485 4486 if (converted_onm == NULL) { 4487 *cs->statusp = resp->status = NFS4ERR_INVAL; 4488 kmem_free(onm, olen); 4489 goto out; 4490 } 4491 4492 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4493 if (nnm == NULL) { 4494 *cs->statusp = resp->status = NFS4ERR_INVAL; 4495 if (onm != converted_onm) 4496 kmem_free(converted_onm, MAXPATHLEN + 1); 4497 kmem_free(onm, olen); 4498 goto out; 4499 } 4500 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4501 MAXPATHLEN + 1); 4502 4503 if (converted_nnm == NULL) { 4504 *cs->statusp = resp->status = NFS4ERR_INVAL; 4505 kmem_free(nnm, nlen); 4506 nnm = NULL; 4507 if (onm != converted_onm) 4508 kmem_free(converted_onm, MAXPATHLEN + 1); 4509 kmem_free(onm, olen); 4510 goto out; 4511 } 4512 4513 4514 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4515 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4516 kmem_free(onm, olen); 4517 kmem_free(nnm, nlen); 4518 goto out; 4519 } 4520 4521 4522 if (rdonly4(req, cs)) { 4523 *cs->statusp = resp->status = NFS4ERR_ROFS; 4524 if (onm != converted_onm) 4525 kmem_free(converted_onm, MAXPATHLEN + 1); 4526 kmem_free(onm, olen); 4527 if (nnm != converted_nnm) 4528 kmem_free(converted_nnm, MAXPATHLEN + 1); 4529 kmem_free(nnm, nlen); 4530 goto out; 4531 } 4532 4533 /* check label of the target dir */ 4534 if (is_system_labeled()) { 4535 ASSERT(req->rq_label != NULL); 4536 clabel = req->rq_label; 4537 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4538 "got client label from request(1)", 4539 struct svc_req *, req); 4540 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4541 if (!do_rfs_label_check(clabel, ndvp, 4542 EQUALITY_CHECK, cs->exi)) { 4543 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4544 goto err_out; 4545 } 4546 } 4547 } 4548 4549 /* 4550 * Is the source a file and have a delegation? 4551 * We don't need to acquire va_seq before these lookups, if 4552 * it causes an update, cinfo.before will not match, which will 4553 * trigger a cache flush even if atomic is TRUE. 4554 */ 4555 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4556 &error, cs->cr)) { 4557 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4558 NULL)) { 4559 *cs->statusp = resp->status = NFS4ERR_DELAY; 4560 goto err_out; 4561 } 4562 } 4563 4564 if (srcvp == NULL) { 4565 *cs->statusp = resp->status = puterrno4(error); 4566 if (onm != converted_onm) 4567 kmem_free(converted_onm, MAXPATHLEN + 1); 4568 kmem_free(onm, olen); 4569 if (nnm != converted_nnm) 4570 kmem_free(converted_nnm, MAXPATHLEN + 1); 4571 kmem_free(nnm, nlen); 4572 goto out; 4573 } 4574 4575 sfp_rele_grant_hold = 1; 4576 4577 /* Does the destination exist and a file and have a delegation? */ 4578 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4579 NULL, cs->cr)) { 4580 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4581 NULL)) { 4582 *cs->statusp = resp->status = NFS4ERR_DELAY; 4583 goto err_out; 4584 } 4585 } 4586 fp_rele_grant_hold = 1; 4587 4588 4589 /* Check for NBMAND lock on both source and target */ 4590 if (nbl_need_check(srcvp)) { 4591 nbl_start_crit(srcvp, RW_READER); 4592 in_crit_src = 1; 4593 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4594 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4595 goto err_out; 4596 } 4597 } 4598 4599 if (targvp && nbl_need_check(targvp)) { 4600 nbl_start_crit(targvp, RW_READER); 4601 in_crit_targ = 1; 4602 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4603 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4604 goto err_out; 4605 } 4606 } 4607 4608 /* Get source "before" change value */ 4609 obdva.va_mask = AT_CTIME|AT_SEQ; 4610 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4611 if (!error) { 4612 nbdva.va_mask = AT_CTIME|AT_SEQ; 4613 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4614 } 4615 if (error) { 4616 *cs->statusp = resp->status = puterrno4(error); 4617 goto err_out; 4618 } 4619 4620 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4621 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4622 4623 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4624 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4625 struct vattr va; 4626 vnode_t *tvp; 4627 4628 rfs4_dbe_lock(fp->rf_dbe); 4629 tvp = fp->rf_vp; 4630 if (tvp) 4631 VN_HOLD(tvp); 4632 rfs4_dbe_unlock(fp->rf_dbe); 4633 4634 if (tvp) { 4635 va.va_mask = AT_NLINK; 4636 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4637 va.va_nlink == 0) { 4638 /* The file is gone and so should the state */ 4639 if (in_crit_targ) { 4640 nbl_end_crit(targvp); 4641 in_crit_targ = 0; 4642 } 4643 rfs4_close_all_state(fp); 4644 } 4645 VN_RELE(tvp); 4646 } 4647 } 4648 if (error == 0) 4649 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4650 4651 if (in_crit_src) 4652 nbl_end_crit(srcvp); 4653 if (srcvp) 4654 VN_RELE(srcvp); 4655 if (in_crit_targ) 4656 nbl_end_crit(targvp); 4657 if (targvp) 4658 VN_RELE(targvp); 4659 4660 if (sfp) { 4661 rfs4_clear_dont_grant(sfp); 4662 rfs4_file_rele(sfp); 4663 } 4664 if (fp) { 4665 rfs4_clear_dont_grant(fp); 4666 rfs4_file_rele(fp); 4667 } 4668 4669 if (converted_onm != onm) 4670 kmem_free(converted_onm, MAXPATHLEN + 1); 4671 kmem_free(onm, olen); 4672 if (converted_nnm != nnm) 4673 kmem_free(converted_nnm, MAXPATHLEN + 1); 4674 kmem_free(nnm, nlen); 4675 4676 /* 4677 * Get the initial "after" sequence number, if it fails, set to zero 4678 */ 4679 oidva.va_mask = AT_SEQ; 4680 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4681 oidva.va_seq = 0; 4682 4683 nidva.va_mask = AT_SEQ; 4684 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4685 nidva.va_seq = 0; 4686 4687 /* 4688 * Force modified data and metadata out to stable storage. 4689 */ 4690 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4691 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4692 4693 if (error) { 4694 *cs->statusp = resp->status = puterrno4(error); 4695 goto out; 4696 } 4697 4698 /* 4699 * Get "after" change values, if it fails, simply return the 4700 * before value. 4701 */ 4702 oadva.va_mask = AT_CTIME|AT_SEQ; 4703 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4704 oadva.va_ctime = obdva.va_ctime; 4705 oadva.va_seq = 0; 4706 } 4707 4708 nadva.va_mask = AT_CTIME|AT_SEQ; 4709 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4710 nadva.va_ctime = nbdva.va_ctime; 4711 nadva.va_seq = 0; 4712 } 4713 4714 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4715 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4716 4717 /* 4718 * The cinfo.atomic = TRUE only if we have 4719 * non-zero va_seq's, and it has incremented by exactly one 4720 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4721 */ 4722 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4723 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4724 resp->source_cinfo.atomic = TRUE; 4725 else 4726 resp->source_cinfo.atomic = FALSE; 4727 4728 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4729 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4730 resp->target_cinfo.atomic = TRUE; 4731 else 4732 resp->target_cinfo.atomic = FALSE; 4733 4734 #ifdef VOLATILE_FH_TEST 4735 { 4736 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4737 4738 /* 4739 * Add the renamed file handle to the volatile rename list 4740 */ 4741 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4742 /* file handles may expire on rename */ 4743 vnode_t *vp; 4744 4745 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4746 /* 4747 * Already know that nnm will be a valid string 4748 */ 4749 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4750 NULL, NULL, NULL); 4751 kmem_free(nnm, nlen); 4752 if (!error) { 4753 add_volrnm_fh(cs->exi, vp); 4754 VN_RELE(vp); 4755 } 4756 } 4757 } 4758 #endif /* VOLATILE_FH_TEST */ 4759 4760 *cs->statusp = resp->status = NFS4_OK; 4761 out: 4762 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4763 RENAME4res *, resp); 4764 return; 4765 4766 err_out: 4767 if (onm != converted_onm) 4768 kmem_free(converted_onm, MAXPATHLEN + 1); 4769 if (onm != NULL) 4770 kmem_free(onm, olen); 4771 if (nnm != converted_nnm) 4772 kmem_free(converted_nnm, MAXPATHLEN + 1); 4773 if (nnm != NULL) 4774 kmem_free(nnm, nlen); 4775 4776 if (in_crit_src) nbl_end_crit(srcvp); 4777 if (in_crit_targ) nbl_end_crit(targvp); 4778 if (targvp) VN_RELE(targvp); 4779 if (srcvp) VN_RELE(srcvp); 4780 if (sfp) { 4781 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4782 rfs4_file_rele(sfp); 4783 } 4784 if (fp) { 4785 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4786 rfs4_file_rele(fp); 4787 } 4788 4789 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4790 RENAME4res *, resp); 4791 } 4792 4793 /* ARGSUSED */ 4794 static void 4795 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4796 struct compound_state *cs) 4797 { 4798 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4799 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4800 rfs4_client_t *cp; 4801 4802 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4803 RENEW4args *, args); 4804 4805 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4806 *cs->statusp = resp->status = 4807 rfs4_check_clientid(&args->clientid, 0); 4808 goto out; 4809 } 4810 4811 if (rfs4_lease_expired(cp)) { 4812 rfs4_client_rele(cp); 4813 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4814 goto out; 4815 } 4816 4817 rfs4_update_lease(cp); 4818 4819 mutex_enter(cp->rc_cbinfo.cb_lock); 4820 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4821 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4822 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4823 } else { 4824 *cs->statusp = resp->status = NFS4_OK; 4825 } 4826 mutex_exit(cp->rc_cbinfo.cb_lock); 4827 4828 rfs4_client_rele(cp); 4829 4830 out: 4831 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4832 RENEW4res *, resp); 4833 } 4834 4835 /* ARGSUSED */ 4836 static void 4837 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4838 struct compound_state *cs) 4839 { 4840 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4841 4842 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4843 4844 /* No need to check cs->access - we are not accessing any object */ 4845 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4846 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4847 goto out; 4848 } 4849 if (cs->vp != NULL) { 4850 VN_RELE(cs->vp); 4851 } 4852 cs->vp = cs->saved_vp; 4853 cs->saved_vp = NULL; 4854 cs->exi = cs->saved_exi; 4855 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4856 *cs->statusp = resp->status = NFS4_OK; 4857 cs->deleg = FALSE; 4858 4859 out: 4860 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4861 RESTOREFH4res *, resp); 4862 } 4863 4864 /* ARGSUSED */ 4865 static void 4866 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4867 struct compound_state *cs) 4868 { 4869 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4870 4871 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4872 4873 /* No need to check cs->access - we are not accessing any object */ 4874 if (cs->vp == NULL) { 4875 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4876 goto out; 4877 } 4878 if (cs->saved_vp != NULL) { 4879 VN_RELE(cs->saved_vp); 4880 } 4881 cs->saved_vp = cs->vp; 4882 VN_HOLD(cs->saved_vp); 4883 cs->saved_exi = cs->exi; 4884 /* 4885 * since SAVEFH is fairly rare, don't alloc space for its fh 4886 * unless necessary. 4887 */ 4888 if (cs->saved_fh.nfs_fh4_val == NULL) { 4889 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4890 } 4891 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4892 *cs->statusp = resp->status = NFS4_OK; 4893 4894 out: 4895 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4896 SAVEFH4res *, resp); 4897 } 4898 4899 /* 4900 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4901 * return the bitmap of attrs that were set successfully. It is also 4902 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4903 * always be called only after rfs4_do_set_attrs(). 4904 * 4905 * Verify that the attributes are same as the expected ones. sargp->vap 4906 * and sargp->sbp contain the input attributes as translated from fattr4. 4907 * 4908 * This function verifies only the attrs that correspond to a vattr or 4909 * vfsstat struct. That is because of the extra step needed to get the 4910 * corresponding system structs. Other attributes have already been set or 4911 * verified by do_rfs4_set_attrs. 4912 * 4913 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4914 */ 4915 static int 4916 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4917 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4918 { 4919 int error, ret_error = 0; 4920 int i, k; 4921 uint_t sva_mask = sargp->vap->va_mask; 4922 uint_t vbit; 4923 union nfs4_attr_u *na; 4924 uint8_t *amap; 4925 bool_t getsb = ntovp->vfsstat; 4926 4927 if (sva_mask != 0) { 4928 /* 4929 * Okay to overwrite sargp->vap because we verify based 4930 * on the incoming values. 4931 */ 4932 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4933 sargp->cs->cr, NULL); 4934 if (ret_error) { 4935 if (resp == NULL) 4936 return (ret_error); 4937 /* 4938 * Must return bitmap of successful attrs 4939 */ 4940 sva_mask = 0; /* to prevent checking vap later */ 4941 } else { 4942 /* 4943 * Some file systems clobber va_mask. it is probably 4944 * wrong of them to do so, nonethless we practice 4945 * defensive coding. 4946 * See bug id 4276830. 4947 */ 4948 sargp->vap->va_mask = sva_mask; 4949 } 4950 } 4951 4952 if (getsb) { 4953 /* 4954 * Now get the superblock and loop on the bitmap, as there is 4955 * no simple way of translating from superblock to bitmap4. 4956 */ 4957 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4958 if (ret_error) { 4959 if (resp == NULL) 4960 goto errout; 4961 getsb = FALSE; 4962 } 4963 } 4964 4965 /* 4966 * Now loop and verify each attribute which getattr returned 4967 * whether it's the same as the input. 4968 */ 4969 if (resp == NULL && !getsb && (sva_mask == 0)) 4970 goto errout; 4971 4972 na = ntovp->na; 4973 amap = ntovp->amap; 4974 k = 0; 4975 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4976 k = *amap; 4977 ASSERT(nfs4_ntov_map[k].nval == k); 4978 vbit = nfs4_ntov_map[k].vbit; 4979 4980 /* 4981 * If vattr attribute but VOP_GETATTR failed, or it's 4982 * superblock attribute but VFS_STATVFS failed, skip 4983 */ 4984 if (vbit) { 4985 if ((vbit & sva_mask) == 0) 4986 continue; 4987 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4988 continue; 4989 } 4990 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4991 if (resp != NULL) { 4992 if (error) 4993 ret_error = -1; /* not all match */ 4994 else /* update response bitmap */ 4995 *resp |= nfs4_ntov_map[k].fbit; 4996 continue; 4997 } 4998 if (error) { 4999 ret_error = -1; /* not all match */ 5000 break; 5001 } 5002 } 5003 errout: 5004 return (ret_error); 5005 } 5006 5007 /* 5008 * Decode the attribute to be set/verified. If the attr requires a sys op 5009 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5010 * call the sv_getit function for it, because the sys op hasn't yet been done. 5011 * Return 0 for success, error code if failed. 5012 * 5013 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5014 */ 5015 static int 5016 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5017 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5018 { 5019 int error = 0; 5020 bool_t set_later; 5021 5022 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5023 5024 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5025 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5026 /* 5027 * don't verify yet if a vattr or sb dependent attr, 5028 * because we don't have their sys values yet. 5029 * Will be done later. 5030 */ 5031 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5032 /* 5033 * ACLs are a special case, since setting the MODE 5034 * conflicts with setting the ACL. We delay setting 5035 * the ACL until all other attributes have been set. 5036 * The ACL gets set in do_rfs4_op_setattr(). 5037 */ 5038 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5039 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5040 sargp, nap); 5041 if (error) { 5042 xdr_free(nfs4_ntov_map[k].xfunc, 5043 (caddr_t)nap); 5044 } 5045 } 5046 } 5047 } else { 5048 #ifdef DEBUG 5049 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5050 "decoding attribute %d\n", k); 5051 #endif 5052 error = EINVAL; 5053 } 5054 if (!error && resp_bval && !set_later) { 5055 *resp_bval |= nfs4_ntov_map[k].fbit; 5056 } 5057 5058 return (error); 5059 } 5060 5061 /* 5062 * Set vattr based on incoming fattr4 attrs - used by setattr. 5063 * Set response mask. Ignore any values that are not writable vattr attrs. 5064 */ 5065 static nfsstat4 5066 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5067 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5068 nfs4_attr_cmd_t cmd) 5069 { 5070 int error = 0; 5071 int i; 5072 char *attrs = fattrp->attrlist4; 5073 uint32_t attrslen = fattrp->attrlist4_len; 5074 XDR xdr; 5075 nfsstat4 status = NFS4_OK; 5076 vnode_t *vp = cs->vp; 5077 union nfs4_attr_u *na; 5078 uint8_t *amap; 5079 5080 #ifndef lint 5081 /* 5082 * Make sure that maximum attribute number can be expressed as an 5083 * 8 bit quantity. 5084 */ 5085 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5086 #endif 5087 5088 if (vp == NULL) { 5089 if (resp) 5090 *resp = 0; 5091 return (NFS4ERR_NOFILEHANDLE); 5092 } 5093 if (cs->access == CS_ACCESS_DENIED) { 5094 if (resp) 5095 *resp = 0; 5096 return (NFS4ERR_ACCESS); 5097 } 5098 5099 sargp->op = cmd; 5100 sargp->cs = cs; 5101 sargp->flag = 0; /* may be set later */ 5102 sargp->vap->va_mask = 0; 5103 sargp->rdattr_error = NFS4_OK; 5104 sargp->rdattr_error_req = FALSE; 5105 /* sargp->sbp is set by the caller */ 5106 5107 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5108 5109 na = ntovp->na; 5110 amap = ntovp->amap; 5111 5112 /* 5113 * The following loop iterates on the nfs4_ntov_map checking 5114 * if the fbit is set in the requested bitmap. 5115 * If set then we process the arguments using the 5116 * rfs4_fattr4 conversion functions to populate the setattr 5117 * vattr and va_mask. Any settable attrs that are not using vattr 5118 * will be set in this loop. 5119 */ 5120 for (i = 0; i < nfs4_ntov_map_size; i++) { 5121 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5122 continue; 5123 } 5124 /* 5125 * If setattr, must be a writable attr. 5126 * If verify/nverify, must be a readable attr. 5127 */ 5128 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5129 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5130 /* 5131 * Client tries to set/verify an 5132 * unsupported attribute, tries to set 5133 * a read only attr or verify a write 5134 * only one - error! 5135 */ 5136 break; 5137 } 5138 /* 5139 * Decode the attribute to set/verify 5140 */ 5141 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5142 &xdr, resp ? resp : NULL, na); 5143 if (error) 5144 break; 5145 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5146 na++; 5147 (ntovp->attrcnt)++; 5148 if (nfs4_ntov_map[i].vfsstat) 5149 ntovp->vfsstat = TRUE; 5150 } 5151 5152 if (error != 0) 5153 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5154 puterrno4(error)); 5155 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5156 return (status); 5157 } 5158 5159 static nfsstat4 5160 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5161 stateid4 *stateid) 5162 { 5163 int error = 0; 5164 struct nfs4_svgetit_arg sarg; 5165 bool_t trunc; 5166 5167 nfsstat4 status = NFS4_OK; 5168 cred_t *cr = cs->cr; 5169 vnode_t *vp = cs->vp; 5170 struct nfs4_ntov_table ntov; 5171 struct statvfs64 sb; 5172 struct vattr bva; 5173 struct flock64 bf; 5174 int in_crit = 0; 5175 uint_t saved_mask = 0; 5176 caller_context_t ct; 5177 5178 *resp = 0; 5179 sarg.sbp = &sb; 5180 sarg.is_referral = B_FALSE; 5181 nfs4_ntov_table_init(&ntov); 5182 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5183 NFS4ATTR_SETIT); 5184 if (status != NFS4_OK) { 5185 /* 5186 * failed set attrs 5187 */ 5188 goto done; 5189 } 5190 if ((sarg.vap->va_mask == 0) && 5191 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5192 /* 5193 * no further work to be done 5194 */ 5195 goto done; 5196 } 5197 5198 /* 5199 * If we got a request to set the ACL and the MODE, only 5200 * allow changing VSUID, VSGID, and VSVTX. Attempting 5201 * to change any other bits, along with setting an ACL, 5202 * gives NFS4ERR_INVAL. 5203 */ 5204 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5205 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5206 vattr_t va; 5207 5208 va.va_mask = AT_MODE; 5209 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5210 if (error) { 5211 status = puterrno4(error); 5212 goto done; 5213 } 5214 if ((sarg.vap->va_mode ^ va.va_mode) & 5215 ~(VSUID | VSGID | VSVTX)) { 5216 status = NFS4ERR_INVAL; 5217 goto done; 5218 } 5219 } 5220 5221 /* Check stateid only if size has been set */ 5222 if (sarg.vap->va_mask & AT_SIZE) { 5223 trunc = (sarg.vap->va_size == 0); 5224 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5225 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5226 if (status != NFS4_OK) 5227 goto done; 5228 } else { 5229 ct.cc_sysid = 0; 5230 ct.cc_pid = 0; 5231 ct.cc_caller_id = nfs4_srv_caller_id; 5232 ct.cc_flags = CC_DONTBLOCK; 5233 } 5234 5235 /* XXX start of possible race with delegations */ 5236 5237 /* 5238 * We need to specially handle size changes because it is 5239 * possible for the client to create a file with read-only 5240 * modes, but with the file opened for writing. If the client 5241 * then tries to set the file size, e.g. ftruncate(3C), 5242 * fcntl(F_FREESP), the normal access checking done in 5243 * VOP_SETATTR would prevent the client from doing it even though 5244 * it should be allowed to do so. To get around this, we do the 5245 * access checking for ourselves and use VOP_SPACE which doesn't 5246 * do the access checking. 5247 * Also the client should not be allowed to change the file 5248 * size if there is a conflicting non-blocking mandatory lock in 5249 * the region of the change. 5250 */ 5251 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5252 u_offset_t offset; 5253 ssize_t length; 5254 5255 /* 5256 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5257 * before returning, sarg.vap->va_mask is used to 5258 * generate the setattr reply bitmap. We also clear 5259 * AT_SIZE below before calling VOP_SPACE. For both 5260 * of these cases, the va_mask needs to be saved here 5261 * and restored after calling VOP_SETATTR. 5262 */ 5263 saved_mask = sarg.vap->va_mask; 5264 5265 /* 5266 * Check any possible conflict due to NBMAND locks. 5267 * Get into critical region before VOP_GETATTR, so the 5268 * size attribute is valid when checking conflicts. 5269 */ 5270 if (nbl_need_check(vp)) { 5271 nbl_start_crit(vp, RW_READER); 5272 in_crit = 1; 5273 } 5274 5275 bva.va_mask = AT_UID|AT_SIZE; 5276 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5277 status = puterrno4(error); 5278 goto done; 5279 } 5280 5281 if (in_crit) { 5282 if (sarg.vap->va_size < bva.va_size) { 5283 offset = sarg.vap->va_size; 5284 length = bva.va_size - sarg.vap->va_size; 5285 } else { 5286 offset = bva.va_size; 5287 length = sarg.vap->va_size - bva.va_size; 5288 } 5289 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5290 &ct)) { 5291 status = NFS4ERR_LOCKED; 5292 goto done; 5293 } 5294 } 5295 5296 if (crgetuid(cr) == bva.va_uid) { 5297 sarg.vap->va_mask &= ~AT_SIZE; 5298 bf.l_type = F_WRLCK; 5299 bf.l_whence = 0; 5300 bf.l_start = (off64_t)sarg.vap->va_size; 5301 bf.l_len = 0; 5302 bf.l_sysid = 0; 5303 bf.l_pid = 0; 5304 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5305 (offset_t)sarg.vap->va_size, cr, &ct); 5306 } 5307 } 5308 5309 if (!error && sarg.vap->va_mask != 0) 5310 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5311 5312 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5313 if (saved_mask & AT_SIZE) 5314 sarg.vap->va_mask |= AT_SIZE; 5315 5316 /* 5317 * If an ACL was being set, it has been delayed until now, 5318 * in order to set the mode (via the VOP_SETATTR() above) first. 5319 */ 5320 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5321 int i; 5322 5323 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5324 if (ntov.amap[i] == FATTR4_ACL) 5325 break; 5326 if (i < NFS4_MAXNUM_ATTRS) { 5327 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5328 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5329 if (error == 0) { 5330 *resp |= FATTR4_ACL_MASK; 5331 } else if (error == ENOTSUP) { 5332 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5333 status = NFS4ERR_ATTRNOTSUPP; 5334 goto done; 5335 } 5336 } else { 5337 NFS4_DEBUG(rfs4_debug, 5338 (CE_NOTE, "do_rfs4_op_setattr: " 5339 "unable to find ACL in fattr4")); 5340 error = EINVAL; 5341 } 5342 } 5343 5344 if (error) { 5345 /* check if a monitor detected a delegation conflict */ 5346 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5347 status = NFS4ERR_DELAY; 5348 else 5349 status = puterrno4(error); 5350 5351 /* 5352 * Set the response bitmap when setattr failed. 5353 * If VOP_SETATTR partially succeeded, test by doing a 5354 * VOP_GETATTR on the object and comparing the data 5355 * to the setattr arguments. 5356 */ 5357 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5358 } else { 5359 /* 5360 * Force modified metadata out to stable storage. 5361 */ 5362 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5363 /* 5364 * Set response bitmap 5365 */ 5366 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5367 } 5368 5369 /* Return early and already have a NFSv4 error */ 5370 done: 5371 /* 5372 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5373 * conversion sets both readable and writeable NFS4 attrs 5374 * for AT_MTIME and AT_ATIME. The line below masks out 5375 * unrequested attrs from the setattr result bitmap. This 5376 * is placed after the done: label to catch the ATTRNOTSUP 5377 * case. 5378 */ 5379 *resp &= fattrp->attrmask; 5380 5381 if (in_crit) 5382 nbl_end_crit(vp); 5383 5384 nfs4_ntov_table_free(&ntov, &sarg); 5385 5386 return (status); 5387 } 5388 5389 /* ARGSUSED */ 5390 static void 5391 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5392 struct compound_state *cs) 5393 { 5394 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5395 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5396 bslabel_t *clabel; 5397 5398 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5399 SETATTR4args *, args); 5400 5401 if (cs->vp == NULL) { 5402 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5403 goto out; 5404 } 5405 5406 /* 5407 * If there is an unshared filesystem mounted on this vnode, 5408 * do not allow to setattr on this vnode. 5409 */ 5410 if (vn_ismntpt(cs->vp)) { 5411 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5412 goto out; 5413 } 5414 5415 resp->attrsset = 0; 5416 5417 if (rdonly4(req, cs)) { 5418 *cs->statusp = resp->status = NFS4ERR_ROFS; 5419 goto out; 5420 } 5421 5422 /* check label before setting attributes */ 5423 if (is_system_labeled()) { 5424 ASSERT(req->rq_label != NULL); 5425 clabel = req->rq_label; 5426 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5427 "got client label from request(1)", 5428 struct svc_req *, req); 5429 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5430 if (!do_rfs_label_check(clabel, cs->vp, 5431 EQUALITY_CHECK, cs->exi)) { 5432 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5433 goto out; 5434 } 5435 } 5436 } 5437 5438 *cs->statusp = resp->status = 5439 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5440 &args->stateid); 5441 5442 out: 5443 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5444 SETATTR4res *, resp); 5445 } 5446 5447 /* ARGSUSED */ 5448 static void 5449 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5450 struct compound_state *cs) 5451 { 5452 /* 5453 * verify and nverify are exactly the same, except that nverify 5454 * succeeds when some argument changed, and verify succeeds when 5455 * when none changed. 5456 */ 5457 5458 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5459 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5460 5461 int error; 5462 struct nfs4_svgetit_arg sarg; 5463 struct statvfs64 sb; 5464 struct nfs4_ntov_table ntov; 5465 5466 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5467 VERIFY4args *, args); 5468 5469 if (cs->vp == NULL) { 5470 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5471 goto out; 5472 } 5473 5474 sarg.sbp = &sb; 5475 sarg.is_referral = B_FALSE; 5476 nfs4_ntov_table_init(&ntov); 5477 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5478 &sarg, &ntov, NFS4ATTR_VERIT); 5479 if (resp->status != NFS4_OK) { 5480 /* 5481 * do_rfs4_set_attrs will try to verify systemwide attrs, 5482 * so could return -1 for "no match". 5483 */ 5484 if (resp->status == -1) 5485 resp->status = NFS4ERR_NOT_SAME; 5486 goto done; 5487 } 5488 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5489 switch (error) { 5490 case 0: 5491 resp->status = NFS4_OK; 5492 break; 5493 case -1: 5494 resp->status = NFS4ERR_NOT_SAME; 5495 break; 5496 default: 5497 resp->status = puterrno4(error); 5498 break; 5499 } 5500 done: 5501 *cs->statusp = resp->status; 5502 nfs4_ntov_table_free(&ntov, &sarg); 5503 out: 5504 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5505 VERIFY4res *, resp); 5506 } 5507 5508 /* ARGSUSED */ 5509 static void 5510 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5511 struct compound_state *cs) 5512 { 5513 /* 5514 * verify and nverify are exactly the same, except that nverify 5515 * succeeds when some argument changed, and verify succeeds when 5516 * when none changed. 5517 */ 5518 5519 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5520 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5521 5522 int error; 5523 struct nfs4_svgetit_arg sarg; 5524 struct statvfs64 sb; 5525 struct nfs4_ntov_table ntov; 5526 5527 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5528 NVERIFY4args *, args); 5529 5530 if (cs->vp == NULL) { 5531 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5532 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5533 NVERIFY4res *, resp); 5534 return; 5535 } 5536 sarg.sbp = &sb; 5537 sarg.is_referral = B_FALSE; 5538 nfs4_ntov_table_init(&ntov); 5539 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5540 &sarg, &ntov, NFS4ATTR_VERIT); 5541 if (resp->status != NFS4_OK) { 5542 /* 5543 * do_rfs4_set_attrs will try to verify systemwide attrs, 5544 * so could return -1 for "no match". 5545 */ 5546 if (resp->status == -1) 5547 resp->status = NFS4_OK; 5548 goto done; 5549 } 5550 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5551 switch (error) { 5552 case 0: 5553 resp->status = NFS4ERR_SAME; 5554 break; 5555 case -1: 5556 resp->status = NFS4_OK; 5557 break; 5558 default: 5559 resp->status = puterrno4(error); 5560 break; 5561 } 5562 done: 5563 *cs->statusp = resp->status; 5564 nfs4_ntov_table_free(&ntov, &sarg); 5565 5566 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5567 NVERIFY4res *, resp); 5568 } 5569 5570 /* 5571 * XXX - This should live in an NFS header file. 5572 */ 5573 #define MAX_IOVECS 12 5574 5575 /* ARGSUSED */ 5576 static void 5577 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5578 struct compound_state *cs) 5579 { 5580 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5581 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5582 int error; 5583 vnode_t *vp; 5584 struct vattr bva; 5585 u_offset_t rlimit; 5586 struct uio uio; 5587 struct iovec iov[MAX_IOVECS]; 5588 struct iovec *iovp; 5589 int iovcnt; 5590 int ioflag; 5591 cred_t *savecred, *cr; 5592 bool_t *deleg = &cs->deleg; 5593 nfsstat4 stat; 5594 int in_crit = 0; 5595 caller_context_t ct; 5596 5597 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5598 WRITE4args *, args); 5599 5600 vp = cs->vp; 5601 if (vp == NULL) { 5602 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5603 goto out; 5604 } 5605 if (cs->access == CS_ACCESS_DENIED) { 5606 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5607 goto out; 5608 } 5609 5610 cr = cs->cr; 5611 5612 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5613 deleg, TRUE, &ct)) != NFS4_OK) { 5614 *cs->statusp = resp->status = stat; 5615 goto out; 5616 } 5617 5618 /* 5619 * We have to enter the critical region before calling VOP_RWLOCK 5620 * to avoid a deadlock with ufs. 5621 */ 5622 if (nbl_need_check(vp)) { 5623 nbl_start_crit(vp, RW_READER); 5624 in_crit = 1; 5625 if (nbl_conflict(vp, NBL_WRITE, 5626 args->offset, args->data_len, 0, &ct)) { 5627 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5628 goto out; 5629 } 5630 } 5631 5632 bva.va_mask = AT_MODE | AT_UID; 5633 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5634 5635 /* 5636 * If we can't get the attributes, then we can't do the 5637 * right access checking. So, we'll fail the request. 5638 */ 5639 if (error) { 5640 *cs->statusp = resp->status = puterrno4(error); 5641 goto out; 5642 } 5643 5644 if (rdonly4(req, cs)) { 5645 *cs->statusp = resp->status = NFS4ERR_ROFS; 5646 goto out; 5647 } 5648 5649 if (vp->v_type != VREG) { 5650 *cs->statusp = resp->status = 5651 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5652 goto out; 5653 } 5654 5655 if (crgetuid(cr) != bva.va_uid && 5656 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5657 *cs->statusp = resp->status = puterrno4(error); 5658 goto out; 5659 } 5660 5661 if (MANDLOCK(vp, bva.va_mode)) { 5662 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5663 goto out; 5664 } 5665 5666 if (args->data_len == 0) { 5667 *cs->statusp = resp->status = NFS4_OK; 5668 resp->count = 0; 5669 resp->committed = args->stable; 5670 resp->writeverf = Write4verf; 5671 goto out; 5672 } 5673 5674 if (args->mblk != NULL) { 5675 mblk_t *m; 5676 uint_t bytes, round_len; 5677 5678 iovcnt = 0; 5679 bytes = 0; 5680 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5681 for (m = args->mblk; 5682 m != NULL && bytes < round_len; 5683 m = m->b_cont) { 5684 iovcnt++; 5685 bytes += MBLKL(m); 5686 } 5687 #ifdef DEBUG 5688 /* should have ended on an mblk boundary */ 5689 if (bytes != round_len) { 5690 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5691 bytes, round_len, args->data_len); 5692 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5693 (void *)args->mblk, (void *)m); 5694 ASSERT(bytes == round_len); 5695 } 5696 #endif 5697 if (iovcnt <= MAX_IOVECS) { 5698 iovp = iov; 5699 } else { 5700 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5701 } 5702 mblk_to_iov(args->mblk, iovcnt, iovp); 5703 } else if (args->rlist != NULL) { 5704 iovcnt = 1; 5705 iovp = iov; 5706 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5707 iovp->iov_len = args->data_len; 5708 } else { 5709 iovcnt = 1; 5710 iovp = iov; 5711 iovp->iov_base = args->data_val; 5712 iovp->iov_len = args->data_len; 5713 } 5714 5715 uio.uio_iov = iovp; 5716 uio.uio_iovcnt = iovcnt; 5717 5718 uio.uio_segflg = UIO_SYSSPACE; 5719 uio.uio_extflg = UIO_COPY_DEFAULT; 5720 uio.uio_loffset = args->offset; 5721 uio.uio_resid = args->data_len; 5722 uio.uio_llimit = curproc->p_fsz_ctl; 5723 rlimit = uio.uio_llimit - args->offset; 5724 if (rlimit < (u_offset_t)uio.uio_resid) 5725 uio.uio_resid = (int)rlimit; 5726 5727 if (args->stable == UNSTABLE4) 5728 ioflag = 0; 5729 else if (args->stable == FILE_SYNC4) 5730 ioflag = FSYNC; 5731 else if (args->stable == DATA_SYNC4) 5732 ioflag = FDSYNC; 5733 else { 5734 if (iovp != iov) 5735 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5736 *cs->statusp = resp->status = NFS4ERR_INVAL; 5737 goto out; 5738 } 5739 5740 /* 5741 * We're changing creds because VM may fault and we need 5742 * the cred of the current thread to be used if quota 5743 * checking is enabled. 5744 */ 5745 savecred = curthread->t_cred; 5746 curthread->t_cred = cr; 5747 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5748 curthread->t_cred = savecred; 5749 5750 if (iovp != iov) 5751 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5752 5753 if (error) { 5754 *cs->statusp = resp->status = puterrno4(error); 5755 goto out; 5756 } 5757 5758 *cs->statusp = resp->status = NFS4_OK; 5759 resp->count = args->data_len - uio.uio_resid; 5760 5761 if (ioflag == 0) 5762 resp->committed = UNSTABLE4; 5763 else 5764 resp->committed = FILE_SYNC4; 5765 5766 resp->writeverf = Write4verf; 5767 5768 out: 5769 if (in_crit) 5770 nbl_end_crit(vp); 5771 5772 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5773 WRITE4res *, resp); 5774 } 5775 5776 5777 /* XXX put in a header file */ 5778 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5779 5780 void 5781 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5782 struct svc_req *req, cred_t *cr, int *rv) 5783 { 5784 uint_t i; 5785 struct compound_state cs; 5786 5787 if (rv != NULL) 5788 *rv = 0; 5789 rfs4_init_compound_state(&cs); 5790 /* 5791 * Form a reply tag by copying over the reqeuest tag. 5792 */ 5793 resp->tag.utf8string_val = 5794 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5795 resp->tag.utf8string_len = args->tag.utf8string_len; 5796 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5797 resp->tag.utf8string_len); 5798 5799 cs.statusp = &resp->status; 5800 cs.req = req; 5801 resp->array = NULL; 5802 resp->array_len = 0; 5803 5804 /* 5805 * XXX for now, minorversion should be zero 5806 */ 5807 if (args->minorversion != NFS4_MINORVERSION) { 5808 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5809 &cs, COMPOUND4args *, args); 5810 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5811 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5812 &cs, COMPOUND4res *, resp); 5813 return; 5814 } 5815 5816 if (args->array_len == 0) { 5817 resp->status = NFS4_OK; 5818 return; 5819 } 5820 5821 ASSERT(exi == NULL); 5822 ASSERT(cr == NULL); 5823 5824 cr = crget(); 5825 ASSERT(cr != NULL); 5826 5827 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5828 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5829 &cs, COMPOUND4args *, args); 5830 crfree(cr); 5831 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5832 &cs, COMPOUND4res *, resp); 5833 svcerr_badcred(req->rq_xprt); 5834 if (rv != NULL) 5835 *rv = 1; 5836 return; 5837 } 5838 resp->array_len = args->array_len; 5839 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5840 KM_SLEEP); 5841 5842 cs.basecr = cr; 5843 5844 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5845 COMPOUND4args *, args); 5846 5847 /* 5848 * For now, NFS4 compound processing must be protected by 5849 * exported_lock because it can access more than one exportinfo 5850 * per compound and share/unshare can now change multiple 5851 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5852 * per proc (excluding public exinfo), and exi_count design 5853 * is sufficient to protect concurrent execution of NFS2/3 5854 * ops along with unexport. This lock will be removed as 5855 * part of the NFSv4 phase 2 namespace redesign work. 5856 */ 5857 rw_enter(&exported_lock, RW_READER); 5858 5859 /* 5860 * If this is the first compound we've seen, we need to start all 5861 * new instances' grace periods. 5862 */ 5863 if (rfs4_seen_first_compound == 0) { 5864 rfs4_grace_start_new(); 5865 /* 5866 * This must be set after rfs4_grace_start_new(), otherwise 5867 * another thread could proceed past here before the former 5868 * is finished. 5869 */ 5870 rfs4_seen_first_compound = 1; 5871 } 5872 5873 for (i = 0; i < args->array_len && cs.cont; i++) { 5874 nfs_argop4 *argop; 5875 nfs_resop4 *resop; 5876 uint_t op; 5877 5878 argop = &args->array[i]; 5879 resop = &resp->array[i]; 5880 resop->resop = argop->argop; 5881 op = (uint_t)resop->resop; 5882 5883 if (op < rfsv4disp_cnt) { 5884 kstat_t *ksp = rfsprocio_v4_ptr[op]; 5885 kstat_t *exi_ksp = NULL; 5886 5887 /* 5888 * Count the individual ops here; NULL and COMPOUND 5889 * are counted in common_dispatch() 5890 */ 5891 rfsproccnt_v4_ptr[op].value.ui64++; 5892 5893 if (ksp != NULL) { 5894 mutex_enter(ksp->ks_lock); 5895 kstat_runq_enter(KSTAT_IO_PTR(ksp)); 5896 mutex_exit(ksp->ks_lock); 5897 } 5898 5899 switch (rfsv4disptab[op].op_type) { 5900 case NFS4_OP_CFH: 5901 resop->exi = cs.exi; 5902 break; 5903 case NFS4_OP_SFH: 5904 resop->exi = cs.saved_exi; 5905 break; 5906 default: 5907 ASSERT(resop->exi == NULL); 5908 break; 5909 } 5910 5911 if (resop->exi != NULL) { 5912 exi_ksp = resop->exi->exi_kstats-> 5913 rfsprocio_v4_ptr[op]; 5914 if (exi_ksp != NULL) { 5915 mutex_enter(exi_ksp->ks_lock); 5916 kstat_runq_enter(KSTAT_IO_PTR(exi_ksp)); 5917 mutex_exit(exi_ksp->ks_lock); 5918 } 5919 } 5920 5921 NFS4_DEBUG(rfs4_debug > 1, 5922 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5923 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5924 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5925 rfs4_op_string[op], *cs.statusp)); 5926 if (*cs.statusp != NFS4_OK) 5927 cs.cont = FALSE; 5928 5929 if (rfsv4disptab[op].op_type == NFS4_OP_POSTCFH && 5930 *cs.statusp == NFS4_OK && 5931 (resop->exi = cs.exi) != NULL) { 5932 exi_ksp = resop->exi->exi_kstats-> 5933 rfsprocio_v4_ptr[op]; 5934 } 5935 5936 if (exi_ksp != NULL) { 5937 mutex_enter(exi_ksp->ks_lock); 5938 KSTAT_IO_PTR(exi_ksp)->nwritten += 5939 argop->opsize; 5940 KSTAT_IO_PTR(exi_ksp)->writes++; 5941 if (rfsv4disptab[op].op_type != NFS4_OP_POSTCFH) 5942 kstat_runq_exit(KSTAT_IO_PTR(exi_ksp)); 5943 mutex_exit(exi_ksp->ks_lock); 5944 5945 exi_hold(resop->exi); 5946 } else { 5947 resop->exi = NULL; 5948 } 5949 5950 if (ksp != NULL) { 5951 mutex_enter(ksp->ks_lock); 5952 kstat_runq_exit(KSTAT_IO_PTR(ksp)); 5953 mutex_exit(ksp->ks_lock); 5954 } 5955 } else { 5956 /* 5957 * This is effectively dead code since XDR code 5958 * will have already returned BADXDR if op doesn't 5959 * decode to legal value. This only done for a 5960 * day when XDR code doesn't verify v4 opcodes. 5961 */ 5962 op = OP_ILLEGAL; 5963 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5964 5965 rfs4_op_illegal(argop, resop, req, &cs); 5966 cs.cont = FALSE; 5967 } 5968 5969 /* 5970 * If not at last op, and if we are to stop, then 5971 * compact the results array. 5972 */ 5973 if ((i + 1) < args->array_len && !cs.cont) { 5974 nfs_resop4 *new_res = kmem_alloc( 5975 (i + 1) * sizeof (nfs_resop4), KM_SLEEP); 5976 bcopy(resp->array, 5977 new_res, (i + 1) * sizeof (nfs_resop4)); 5978 kmem_free(resp->array, 5979 args->array_len * sizeof (nfs_resop4)); 5980 5981 resp->array_len = i + 1; 5982 resp->array = new_res; 5983 } 5984 } 5985 5986 rw_exit(&exported_lock); 5987 5988 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5989 COMPOUND4res *, resp); 5990 5991 if (cs.vp) 5992 VN_RELE(cs.vp); 5993 if (cs.saved_vp) 5994 VN_RELE(cs.saved_vp); 5995 if (cs.saved_fh.nfs_fh4_val) 5996 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5997 5998 if (cs.basecr) 5999 crfree(cs.basecr); 6000 if (cs.cr) 6001 crfree(cs.cr); 6002 /* 6003 * done with this compound request, free the label 6004 */ 6005 6006 if (req->rq_label != NULL) { 6007 kmem_free(req->rq_label, sizeof (bslabel_t)); 6008 req->rq_label = NULL; 6009 } 6010 } 6011 6012 /* 6013 * XXX because of what appears to be duplicate calls to rfs4_compound_free 6014 * XXX zero out the tag and array values. Need to investigate why the 6015 * XXX calls occur, but at least prevent the panic for now. 6016 */ 6017 void 6018 rfs4_compound_free(COMPOUND4res *resp) 6019 { 6020 uint_t i; 6021 6022 if (resp->tag.utf8string_val) { 6023 UTF8STRING_FREE(resp->tag) 6024 } 6025 6026 for (i = 0; i < resp->array_len; i++) { 6027 nfs_resop4 *resop; 6028 uint_t op; 6029 6030 resop = &resp->array[i]; 6031 op = (uint_t)resop->resop; 6032 if (op < rfsv4disp_cnt) { 6033 (*rfsv4disptab[op].dis_resfree)(resop); 6034 } 6035 } 6036 if (resp->array != NULL) { 6037 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6038 } 6039 } 6040 6041 /* 6042 * Process the value of the compound request rpc flags, as a bit-AND 6043 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6044 */ 6045 void 6046 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6047 { 6048 int i; 6049 int flag = RPC_ALL; 6050 6051 for (i = 0; flag && i < args->array_len; i++) { 6052 uint_t op; 6053 6054 op = (uint_t)args->array[i].argop; 6055 6056 if (op < rfsv4disp_cnt) 6057 flag &= rfsv4disptab[op].dis_flags; 6058 else 6059 flag = 0; 6060 } 6061 *flagp = flag; 6062 } 6063 6064 void 6065 rfs4_compound_kstat_args(COMPOUND4args *args) 6066 { 6067 int i; 6068 6069 for (i = 0; i < args->array_len; i++) { 6070 uint_t op = (uint_t)args->array[i].argop; 6071 6072 if (op < rfsv4disp_cnt) { 6073 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6074 6075 if (ksp != NULL) { 6076 mutex_enter(ksp->ks_lock); 6077 KSTAT_IO_PTR(ksp)->nwritten += 6078 args->array[i].opsize; 6079 KSTAT_IO_PTR(ksp)->writes++; 6080 mutex_exit(ksp->ks_lock); 6081 } 6082 } 6083 } 6084 } 6085 6086 void 6087 rfs4_compound_kstat_res(COMPOUND4res *res) 6088 { 6089 int i; 6090 6091 for (i = 0; i < res->array_len; i++) { 6092 uint_t op = (uint_t)res->array[i].resop; 6093 6094 if (op < rfsv4disp_cnt) { 6095 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6096 struct exportinfo *exi = res->array[i].exi; 6097 6098 if (ksp != NULL) { 6099 mutex_enter(ksp->ks_lock); 6100 KSTAT_IO_PTR(ksp)->nread += 6101 res->array[i].opsize; 6102 KSTAT_IO_PTR(ksp)->reads++; 6103 mutex_exit(ksp->ks_lock); 6104 } 6105 6106 if (exi != NULL) { 6107 kstat_t *exi_ksp; 6108 6109 rw_enter(&exported_lock, RW_READER); 6110 6111 exi_ksp = exi->exi_kstats->rfsprocio_v4_ptr[op]; 6112 if (exi_ksp != NULL) { 6113 mutex_enter(exi_ksp->ks_lock); 6114 KSTAT_IO_PTR(exi_ksp)->nread += 6115 res->array[i].opsize; 6116 KSTAT_IO_PTR(exi_ksp)->reads++; 6117 mutex_exit(exi_ksp->ks_lock); 6118 } 6119 6120 rw_exit(&exported_lock); 6121 6122 exi_rele(exi); 6123 } 6124 } 6125 } 6126 } 6127 6128 nfsstat4 6129 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6130 { 6131 nfsstat4 e; 6132 6133 rfs4_dbe_lock(cp->rc_dbe); 6134 6135 if (cp->rc_sysidt != LM_NOSYSID) { 6136 *sp = cp->rc_sysidt; 6137 e = NFS4_OK; 6138 6139 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6140 *sp = cp->rc_sysidt; 6141 e = NFS4_OK; 6142 6143 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6144 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6145 } else 6146 e = NFS4ERR_DELAY; 6147 6148 rfs4_dbe_unlock(cp->rc_dbe); 6149 return (e); 6150 } 6151 6152 #if defined(DEBUG) && ! defined(lint) 6153 static void lock_print(char *str, int operation, struct flock64 *flk) 6154 { 6155 char *op, *type; 6156 6157 switch (operation) { 6158 case F_GETLK: op = "F_GETLK"; 6159 break; 6160 case F_SETLK: op = "F_SETLK"; 6161 break; 6162 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6163 break; 6164 default: op = "F_UNKNOWN"; 6165 break; 6166 } 6167 switch (flk->l_type) { 6168 case F_UNLCK: type = "F_UNLCK"; 6169 break; 6170 case F_RDLCK: type = "F_RDLCK"; 6171 break; 6172 case F_WRLCK: type = "F_WRLCK"; 6173 break; 6174 default: type = "F_UNKNOWN"; 6175 break; 6176 } 6177 6178 ASSERT(flk->l_whence == 0); 6179 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6180 str, op, type, (longlong_t)flk->l_start, 6181 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6182 } 6183 6184 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6185 #else 6186 #define LOCK_PRINT(d, s, t, f) 6187 #endif 6188 6189 /*ARGSUSED*/ 6190 static bool_t 6191 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6192 { 6193 return (TRUE); 6194 } 6195 6196 /* 6197 * Look up the pathname using the vp in cs as the directory vnode. 6198 * cs->vp will be the vnode for the file on success 6199 */ 6200 6201 static nfsstat4 6202 rfs4_lookup(component4 *component, struct svc_req *req, 6203 struct compound_state *cs) 6204 { 6205 char *nm; 6206 uint32_t len; 6207 nfsstat4 status; 6208 struct sockaddr *ca; 6209 char *name; 6210 6211 if (cs->vp == NULL) { 6212 return (NFS4ERR_NOFILEHANDLE); 6213 } 6214 if (cs->vp->v_type != VDIR) { 6215 return (NFS4ERR_NOTDIR); 6216 } 6217 6218 status = utf8_dir_verify(component); 6219 if (status != NFS4_OK) 6220 return (status); 6221 6222 nm = utf8_to_fn(component, &len, NULL); 6223 if (nm == NULL) { 6224 return (NFS4ERR_INVAL); 6225 } 6226 6227 if (len > MAXNAMELEN) { 6228 kmem_free(nm, len); 6229 return (NFS4ERR_NAMETOOLONG); 6230 } 6231 6232 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6233 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6234 MAXPATHLEN + 1); 6235 6236 if (name == NULL) { 6237 kmem_free(nm, len); 6238 return (NFS4ERR_INVAL); 6239 } 6240 6241 status = do_rfs4_op_lookup(name, req, cs); 6242 6243 if (name != nm) 6244 kmem_free(name, MAXPATHLEN + 1); 6245 6246 kmem_free(nm, len); 6247 6248 return (status); 6249 } 6250 6251 static nfsstat4 6252 rfs4_lookupfile(component4 *component, struct svc_req *req, 6253 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6254 { 6255 nfsstat4 status; 6256 vnode_t *dvp = cs->vp; 6257 vattr_t bva, ava, fva; 6258 int error; 6259 6260 /* Get "before" change value */ 6261 bva.va_mask = AT_CTIME|AT_SEQ; 6262 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6263 if (error) 6264 return (puterrno4(error)); 6265 6266 /* rfs4_lookup may VN_RELE directory */ 6267 VN_HOLD(dvp); 6268 6269 status = rfs4_lookup(component, req, cs); 6270 if (status != NFS4_OK) { 6271 VN_RELE(dvp); 6272 return (status); 6273 } 6274 6275 /* 6276 * Get "after" change value, if it fails, simply return the 6277 * before value. 6278 */ 6279 ava.va_mask = AT_CTIME|AT_SEQ; 6280 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6281 ava.va_ctime = bva.va_ctime; 6282 ava.va_seq = 0; 6283 } 6284 VN_RELE(dvp); 6285 6286 /* 6287 * Validate the file is a file 6288 */ 6289 fva.va_mask = AT_TYPE|AT_MODE; 6290 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6291 if (error) 6292 return (puterrno4(error)); 6293 6294 if (fva.va_type != VREG) { 6295 if (fva.va_type == VDIR) 6296 return (NFS4ERR_ISDIR); 6297 if (fva.va_type == VLNK) 6298 return (NFS4ERR_SYMLINK); 6299 return (NFS4ERR_INVAL); 6300 } 6301 6302 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6303 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6304 6305 /* 6306 * It is undefined if VOP_LOOKUP will change va_seq, so 6307 * cinfo.atomic = TRUE only if we have 6308 * non-zero va_seq's, and they have not changed. 6309 */ 6310 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6311 cinfo->atomic = TRUE; 6312 else 6313 cinfo->atomic = FALSE; 6314 6315 /* Check for mandatory locking */ 6316 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6317 return (check_open_access(access, cs, req)); 6318 } 6319 6320 static nfsstat4 6321 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6322 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6323 { 6324 int error; 6325 nfsstat4 status = NFS4_OK; 6326 vattr_t va; 6327 6328 tryagain: 6329 6330 /* 6331 * The file open mode used is VWRITE. If the client needs 6332 * some other semantic, then it should do the access checking 6333 * itself. It would have been nice to have the file open mode 6334 * passed as part of the arguments. 6335 */ 6336 6337 *created = TRUE; 6338 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6339 6340 if (error) { 6341 *created = FALSE; 6342 6343 /* 6344 * If we got something other than file already exists 6345 * then just return this error. Otherwise, we got 6346 * EEXIST. If we were doing a GUARDED create, then 6347 * just return this error. Otherwise, we need to 6348 * make sure that this wasn't a duplicate of an 6349 * exclusive create request. 6350 * 6351 * The assumption is made that a non-exclusive create 6352 * request will never return EEXIST. 6353 */ 6354 6355 if (error != EEXIST || mode == GUARDED4) { 6356 status = puterrno4(error); 6357 return (status); 6358 } 6359 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6360 NULL, NULL, NULL); 6361 6362 if (error) { 6363 /* 6364 * We couldn't find the file that we thought that 6365 * we just created. So, we'll just try creating 6366 * it again. 6367 */ 6368 if (error == ENOENT) 6369 goto tryagain; 6370 6371 status = puterrno4(error); 6372 return (status); 6373 } 6374 6375 if (mode == UNCHECKED4) { 6376 /* existing object must be regular file */ 6377 if ((*vpp)->v_type != VREG) { 6378 if ((*vpp)->v_type == VDIR) 6379 status = NFS4ERR_ISDIR; 6380 else if ((*vpp)->v_type == VLNK) 6381 status = NFS4ERR_SYMLINK; 6382 else 6383 status = NFS4ERR_INVAL; 6384 VN_RELE(*vpp); 6385 return (status); 6386 } 6387 6388 return (NFS4_OK); 6389 } 6390 6391 /* Check for duplicate request */ 6392 ASSERT(mtime != 0); 6393 va.va_mask = AT_MTIME; 6394 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6395 if (!error) { 6396 /* We found the file */ 6397 if (va.va_mtime.tv_sec != mtime->tv_sec || 6398 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6399 /* but its not our creation */ 6400 VN_RELE(*vpp); 6401 return (NFS4ERR_EXIST); 6402 } 6403 *created = TRUE; /* retrans of create == created */ 6404 return (NFS4_OK); 6405 } 6406 VN_RELE(*vpp); 6407 return (NFS4ERR_EXIST); 6408 } 6409 6410 return (NFS4_OK); 6411 } 6412 6413 static nfsstat4 6414 check_open_access(uint32_t access, struct compound_state *cs, 6415 struct svc_req *req) 6416 { 6417 int error; 6418 vnode_t *vp; 6419 bool_t readonly; 6420 cred_t *cr = cs->cr; 6421 6422 /* For now we don't allow mandatory locking as per V2/V3 */ 6423 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6424 return (NFS4ERR_ACCESS); 6425 } 6426 6427 vp = cs->vp; 6428 ASSERT(cr != NULL && vp->v_type == VREG); 6429 6430 /* 6431 * If the file system is exported read only and we are trying 6432 * to open for write, then return NFS4ERR_ROFS 6433 */ 6434 6435 readonly = rdonly4(req, cs); 6436 6437 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6438 return (NFS4ERR_ROFS); 6439 6440 if (access & OPEN4_SHARE_ACCESS_READ) { 6441 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6442 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6443 return (NFS4ERR_ACCESS); 6444 } 6445 } 6446 6447 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6448 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6449 if (error) 6450 return (NFS4ERR_ACCESS); 6451 } 6452 6453 return (NFS4_OK); 6454 } 6455 6456 static nfsstat4 6457 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6458 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6459 { 6460 struct nfs4_svgetit_arg sarg; 6461 struct nfs4_ntov_table ntov; 6462 6463 bool_t ntov_table_init = FALSE; 6464 struct statvfs64 sb; 6465 nfsstat4 status; 6466 vnode_t *vp; 6467 vattr_t bva, ava, iva, cva, *vap; 6468 vnode_t *dvp; 6469 timespec32_t *mtime; 6470 char *nm = NULL; 6471 uint_t buflen; 6472 bool_t created; 6473 bool_t setsize = FALSE; 6474 len_t reqsize; 6475 int error; 6476 bool_t trunc; 6477 caller_context_t ct; 6478 component4 *component; 6479 bslabel_t *clabel; 6480 struct sockaddr *ca; 6481 char *name = NULL; 6482 6483 sarg.sbp = &sb; 6484 sarg.is_referral = B_FALSE; 6485 6486 dvp = cs->vp; 6487 6488 /* Check if the file system is read only */ 6489 if (rdonly4(req, cs)) 6490 return (NFS4ERR_ROFS); 6491 6492 /* check the label of including directory */ 6493 if (is_system_labeled()) { 6494 ASSERT(req->rq_label != NULL); 6495 clabel = req->rq_label; 6496 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6497 "got client label from request(1)", 6498 struct svc_req *, req); 6499 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6500 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6501 cs->exi)) { 6502 return (NFS4ERR_ACCESS); 6503 } 6504 } 6505 } 6506 6507 /* 6508 * Get the last component of path name in nm. cs will reference 6509 * the including directory on success. 6510 */ 6511 component = &args->open_claim4_u.file; 6512 status = utf8_dir_verify(component); 6513 if (status != NFS4_OK) 6514 return (status); 6515 6516 nm = utf8_to_fn(component, &buflen, NULL); 6517 6518 if (nm == NULL) 6519 return (NFS4ERR_RESOURCE); 6520 6521 if (buflen > MAXNAMELEN) { 6522 kmem_free(nm, buflen); 6523 return (NFS4ERR_NAMETOOLONG); 6524 } 6525 6526 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6527 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6528 if (error) { 6529 kmem_free(nm, buflen); 6530 return (puterrno4(error)); 6531 } 6532 6533 if (bva.va_type != VDIR) { 6534 kmem_free(nm, buflen); 6535 return (NFS4ERR_NOTDIR); 6536 } 6537 6538 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6539 6540 switch (args->mode) { 6541 case GUARDED4: 6542 /*FALLTHROUGH*/ 6543 case UNCHECKED4: 6544 nfs4_ntov_table_init(&ntov); 6545 ntov_table_init = TRUE; 6546 6547 *attrset = 0; 6548 status = do_rfs4_set_attrs(attrset, 6549 &args->createhow4_u.createattrs, 6550 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6551 6552 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6553 sarg.vap->va_type != VREG) { 6554 if (sarg.vap->va_type == VDIR) 6555 status = NFS4ERR_ISDIR; 6556 else if (sarg.vap->va_type == VLNK) 6557 status = NFS4ERR_SYMLINK; 6558 else 6559 status = NFS4ERR_INVAL; 6560 } 6561 6562 if (status != NFS4_OK) { 6563 kmem_free(nm, buflen); 6564 nfs4_ntov_table_free(&ntov, &sarg); 6565 *attrset = 0; 6566 return (status); 6567 } 6568 6569 vap = sarg.vap; 6570 vap->va_type = VREG; 6571 vap->va_mask |= AT_TYPE; 6572 6573 if ((vap->va_mask & AT_MODE) == 0) { 6574 vap->va_mask |= AT_MODE; 6575 vap->va_mode = (mode_t)0600; 6576 } 6577 6578 if (vap->va_mask & AT_SIZE) { 6579 6580 /* Disallow create with a non-zero size */ 6581 6582 if ((reqsize = sarg.vap->va_size) != 0) { 6583 kmem_free(nm, buflen); 6584 nfs4_ntov_table_free(&ntov, &sarg); 6585 *attrset = 0; 6586 return (NFS4ERR_INVAL); 6587 } 6588 setsize = TRUE; 6589 } 6590 break; 6591 6592 case EXCLUSIVE4: 6593 /* prohibit EXCL create of named attributes */ 6594 if (dvp->v_flag & V_XATTRDIR) { 6595 kmem_free(nm, buflen); 6596 *attrset = 0; 6597 return (NFS4ERR_INVAL); 6598 } 6599 6600 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6601 cva.va_type = VREG; 6602 /* 6603 * Ensure no time overflows. Assumes underlying 6604 * filesystem supports at least 32 bits. 6605 * Truncate nsec to usec resolution to allow valid 6606 * compares even if the underlying filesystem truncates. 6607 */ 6608 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6609 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6610 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6611 cva.va_mode = (mode_t)0; 6612 vap = &cva; 6613 6614 /* 6615 * For EXCL create, attrset is set to the server attr 6616 * used to cache the client's verifier. 6617 */ 6618 *attrset = FATTR4_TIME_MODIFY_MASK; 6619 break; 6620 } 6621 6622 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6623 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6624 MAXPATHLEN + 1); 6625 6626 if (name == NULL) { 6627 kmem_free(nm, buflen); 6628 return (NFS4ERR_SERVERFAULT); 6629 } 6630 6631 status = create_vnode(dvp, name, vap, args->mode, mtime, 6632 cs->cr, &vp, &created); 6633 if (nm != name) 6634 kmem_free(name, MAXPATHLEN + 1); 6635 kmem_free(nm, buflen); 6636 6637 if (status != NFS4_OK) { 6638 if (ntov_table_init) 6639 nfs4_ntov_table_free(&ntov, &sarg); 6640 *attrset = 0; 6641 return (status); 6642 } 6643 6644 trunc = (setsize && !created); 6645 6646 if (args->mode != EXCLUSIVE4) { 6647 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6648 6649 /* 6650 * True verification that object was created with correct 6651 * attrs is impossible. The attrs could have been changed 6652 * immediately after object creation. If attributes did 6653 * not verify, the only recourse for the server is to 6654 * destroy the object. Maybe if some attrs (like gid) 6655 * are set incorrectly, the object should be destroyed; 6656 * however, seems bad as a default policy. Do we really 6657 * want to destroy an object over one of the times not 6658 * verifying correctly? For these reasons, the server 6659 * currently sets bits in attrset for createattrs 6660 * that were set; however, no verification is done. 6661 * 6662 * vmask_to_nmask accounts for vattr bits set on create 6663 * [do_rfs4_set_attrs() only sets resp bits for 6664 * non-vattr/vfs bits.] 6665 * Mask off any bits we set by default so as not to return 6666 * more attrset bits than were requested in createattrs 6667 */ 6668 if (created) { 6669 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6670 *attrset &= createmask; 6671 } else { 6672 /* 6673 * We did not create the vnode (we tried but it 6674 * already existed). In this case, the only createattr 6675 * that the spec allows the server to set is size, 6676 * and even then, it can only be set if it is 0. 6677 */ 6678 *attrset = 0; 6679 if (trunc) 6680 *attrset = FATTR4_SIZE_MASK; 6681 } 6682 } 6683 if (ntov_table_init) 6684 nfs4_ntov_table_free(&ntov, &sarg); 6685 6686 /* 6687 * Get the initial "after" sequence number, if it fails, 6688 * set to zero, time to before. 6689 */ 6690 iva.va_mask = AT_CTIME|AT_SEQ; 6691 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6692 iva.va_seq = 0; 6693 iva.va_ctime = bva.va_ctime; 6694 } 6695 6696 /* 6697 * create_vnode attempts to create the file exclusive, 6698 * if it already exists the VOP_CREATE will fail and 6699 * may not increase va_seq. It is atomic if 6700 * we haven't changed the directory, but if it has changed 6701 * we don't know what changed it. 6702 */ 6703 if (!created) { 6704 if (bva.va_seq && iva.va_seq && 6705 bva.va_seq == iva.va_seq) 6706 cinfo->atomic = TRUE; 6707 else 6708 cinfo->atomic = FALSE; 6709 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6710 } else { 6711 /* 6712 * The entry was created, we need to sync the 6713 * directory metadata. 6714 */ 6715 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6716 6717 /* 6718 * Get "after" change value, if it fails, simply return the 6719 * before value. 6720 */ 6721 ava.va_mask = AT_CTIME|AT_SEQ; 6722 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6723 ava.va_ctime = bva.va_ctime; 6724 ava.va_seq = 0; 6725 } 6726 6727 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6728 6729 /* 6730 * The cinfo->atomic = TRUE only if we have 6731 * non-zero va_seq's, and it has incremented by exactly one 6732 * during the create_vnode and it didn't 6733 * change during the VOP_FSYNC. 6734 */ 6735 if (bva.va_seq && iva.va_seq && ava.va_seq && 6736 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6737 cinfo->atomic = TRUE; 6738 else 6739 cinfo->atomic = FALSE; 6740 } 6741 6742 /* Check for mandatory locking and that the size gets set. */ 6743 cva.va_mask = AT_MODE; 6744 if (setsize) 6745 cva.va_mask |= AT_SIZE; 6746 6747 /* Assume the worst */ 6748 cs->mandlock = TRUE; 6749 6750 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6751 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6752 6753 /* 6754 * Truncate the file if necessary; this would be 6755 * the case for create over an existing file. 6756 */ 6757 6758 if (trunc) { 6759 int in_crit = 0; 6760 rfs4_file_t *fp; 6761 bool_t create = FALSE; 6762 6763 /* 6764 * We are writing over an existing file. 6765 * Check to see if we need to recall a delegation. 6766 */ 6767 rfs4_hold_deleg_policy(); 6768 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6769 if (rfs4_check_delegated_byfp(FWRITE, fp, 6770 (reqsize == 0), FALSE, FALSE, &clientid)) { 6771 rfs4_file_rele(fp); 6772 rfs4_rele_deleg_policy(); 6773 VN_RELE(vp); 6774 *attrset = 0; 6775 return (NFS4ERR_DELAY); 6776 } 6777 rfs4_file_rele(fp); 6778 } 6779 rfs4_rele_deleg_policy(); 6780 6781 if (nbl_need_check(vp)) { 6782 in_crit = 1; 6783 6784 ASSERT(reqsize == 0); 6785 6786 nbl_start_crit(vp, RW_READER); 6787 if (nbl_conflict(vp, NBL_WRITE, 0, 6788 cva.va_size, 0, NULL)) { 6789 in_crit = 0; 6790 nbl_end_crit(vp); 6791 VN_RELE(vp); 6792 *attrset = 0; 6793 return (NFS4ERR_ACCESS); 6794 } 6795 } 6796 ct.cc_sysid = 0; 6797 ct.cc_pid = 0; 6798 ct.cc_caller_id = nfs4_srv_caller_id; 6799 ct.cc_flags = CC_DONTBLOCK; 6800 6801 cva.va_mask = AT_SIZE; 6802 cva.va_size = reqsize; 6803 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6804 if (in_crit) 6805 nbl_end_crit(vp); 6806 } 6807 } 6808 6809 error = makefh4(&cs->fh, vp, cs->exi); 6810 6811 /* 6812 * Force modified data and metadata out to stable storage. 6813 */ 6814 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6815 6816 if (error) { 6817 VN_RELE(vp); 6818 *attrset = 0; 6819 return (puterrno4(error)); 6820 } 6821 6822 /* if parent dir is attrdir, set namedattr fh flag */ 6823 if (dvp->v_flag & V_XATTRDIR) 6824 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6825 6826 if (cs->vp) 6827 VN_RELE(cs->vp); 6828 6829 cs->vp = vp; 6830 6831 /* 6832 * if we did not create the file, we will need to check 6833 * the access bits on the file 6834 */ 6835 6836 if (!created) { 6837 if (setsize) 6838 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6839 status = check_open_access(args->share_access, cs, req); 6840 if (status != NFS4_OK) 6841 *attrset = 0; 6842 } 6843 return (status); 6844 } 6845 6846 /*ARGSUSED*/ 6847 static void 6848 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6849 rfs4_openowner_t *oo, delegreq_t deleg, 6850 uint32_t access, uint32_t deny, 6851 OPEN4res *resp, int deleg_cur) 6852 { 6853 /* XXX Currently not using req */ 6854 rfs4_state_t *sp; 6855 rfs4_file_t *fp; 6856 bool_t screate = TRUE; 6857 bool_t fcreate = TRUE; 6858 uint32_t open_a, share_a; 6859 uint32_t open_d, share_d; 6860 rfs4_deleg_state_t *dsp; 6861 sysid_t sysid; 6862 nfsstat4 status; 6863 caller_context_t ct; 6864 int fflags = 0; 6865 int recall = 0; 6866 int err; 6867 int first_open; 6868 6869 /* get the file struct and hold a lock on it during initial open */ 6870 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6871 if (fp == NULL) { 6872 resp->status = NFS4ERR_RESOURCE; 6873 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6874 return; 6875 } 6876 6877 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6878 if (sp == NULL) { 6879 resp->status = NFS4ERR_RESOURCE; 6880 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6881 /* No need to keep any reference */ 6882 rw_exit(&fp->rf_file_rwlock); 6883 rfs4_file_rele(fp); 6884 return; 6885 } 6886 6887 /* try to get the sysid before continuing */ 6888 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6889 resp->status = status; 6890 rfs4_file_rele(fp); 6891 /* Not a fully formed open; "close" it */ 6892 if (screate == TRUE) 6893 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6894 rfs4_state_rele(sp); 6895 return; 6896 } 6897 6898 /* Calculate the fflags for this OPEN. */ 6899 if (access & OPEN4_SHARE_ACCESS_READ) 6900 fflags |= FREAD; 6901 if (access & OPEN4_SHARE_ACCESS_WRITE) 6902 fflags |= FWRITE; 6903 6904 rfs4_dbe_lock(sp->rs_dbe); 6905 6906 /* 6907 * Calculate the new deny and access mode that this open is adding to 6908 * the file for this open owner; 6909 */ 6910 open_d = (deny & ~sp->rs_open_deny); 6911 open_a = (access & ~sp->rs_open_access); 6912 6913 /* 6914 * Calculate the new share access and share deny modes that this open 6915 * is adding to the file for this open owner; 6916 */ 6917 share_a = (access & ~sp->rs_share_access); 6918 share_d = (deny & ~sp->rs_share_deny); 6919 6920 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6921 6922 /* 6923 * Check to see the client has already sent an open for this 6924 * open owner on this file with the same share/deny modes. 6925 * If so, we don't need to check for a conflict and we don't 6926 * need to add another shrlock. If not, then we need to 6927 * check for conflicts in deny and access before checking for 6928 * conflicts in delegation. We don't want to recall a 6929 * delegation based on an open that will eventually fail based 6930 * on shares modes. 6931 */ 6932 6933 if (share_a || share_d) { 6934 if ((err = rfs4_share(sp, access, deny)) != 0) { 6935 rfs4_dbe_unlock(sp->rs_dbe); 6936 resp->status = err; 6937 6938 rfs4_file_rele(fp); 6939 /* Not a fully formed open; "close" it */ 6940 if (screate == TRUE) 6941 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6942 rfs4_state_rele(sp); 6943 return; 6944 } 6945 } 6946 6947 rfs4_dbe_lock(fp->rf_dbe); 6948 6949 /* 6950 * Check to see if this file is delegated and if so, if a 6951 * recall needs to be done. 6952 */ 6953 if (rfs4_check_recall(sp, access)) { 6954 rfs4_dbe_unlock(fp->rf_dbe); 6955 rfs4_dbe_unlock(sp->rs_dbe); 6956 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6957 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6958 rfs4_dbe_lock(sp->rs_dbe); 6959 6960 /* if state closed while lock was dropped */ 6961 if (sp->rs_closed) { 6962 if (share_a || share_d) 6963 (void) rfs4_unshare(sp); 6964 rfs4_dbe_unlock(sp->rs_dbe); 6965 rfs4_file_rele(fp); 6966 /* Not a fully formed open; "close" it */ 6967 if (screate == TRUE) 6968 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6969 rfs4_state_rele(sp); 6970 resp->status = NFS4ERR_OLD_STATEID; 6971 return; 6972 } 6973 6974 rfs4_dbe_lock(fp->rf_dbe); 6975 /* Let's see if the delegation was returned */ 6976 if (rfs4_check_recall(sp, access)) { 6977 rfs4_dbe_unlock(fp->rf_dbe); 6978 if (share_a || share_d) 6979 (void) rfs4_unshare(sp); 6980 rfs4_dbe_unlock(sp->rs_dbe); 6981 rfs4_file_rele(fp); 6982 rfs4_update_lease(sp->rs_owner->ro_client); 6983 6984 /* Not a fully formed open; "close" it */ 6985 if (screate == TRUE) 6986 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6987 rfs4_state_rele(sp); 6988 resp->status = NFS4ERR_DELAY; 6989 return; 6990 } 6991 } 6992 /* 6993 * the share check passed and any delegation conflict has been 6994 * taken care of, now call vop_open. 6995 * if this is the first open then call vop_open with fflags. 6996 * if not, call vn_open_upgrade with just the upgrade flags. 6997 * 6998 * if the file has been opened already, it will have the current 6999 * access mode in the state struct. if it has no share access, then 7000 * this is a new open. 7001 * 7002 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 7003 * call VOP_OPEN(), just do the open upgrade. 7004 */ 7005 if (first_open && !deleg_cur) { 7006 ct.cc_sysid = sysid; 7007 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 7008 ct.cc_caller_id = nfs4_srv_caller_id; 7009 ct.cc_flags = CC_DONTBLOCK; 7010 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 7011 if (err) { 7012 rfs4_dbe_unlock(fp->rf_dbe); 7013 if (share_a || share_d) 7014 (void) rfs4_unshare(sp); 7015 rfs4_dbe_unlock(sp->rs_dbe); 7016 rfs4_file_rele(fp); 7017 7018 /* Not a fully formed open; "close" it */ 7019 if (screate == TRUE) 7020 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7021 rfs4_state_rele(sp); 7022 /* check if a monitor detected a delegation conflict */ 7023 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 7024 resp->status = NFS4ERR_DELAY; 7025 else 7026 resp->status = NFS4ERR_SERVERFAULT; 7027 return; 7028 } 7029 } else { /* open upgrade */ 7030 /* 7031 * calculate the fflags for the new mode that is being added 7032 * by this upgrade. 7033 */ 7034 fflags = 0; 7035 if (open_a & OPEN4_SHARE_ACCESS_READ) 7036 fflags |= FREAD; 7037 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7038 fflags |= FWRITE; 7039 vn_open_upgrade(cs->vp, fflags); 7040 } 7041 sp->rs_open_access |= access; 7042 sp->rs_open_deny |= deny; 7043 7044 if (open_d & OPEN4_SHARE_DENY_READ) 7045 fp->rf_deny_read++; 7046 if (open_d & OPEN4_SHARE_DENY_WRITE) 7047 fp->rf_deny_write++; 7048 fp->rf_share_deny |= deny; 7049 7050 if (open_a & OPEN4_SHARE_ACCESS_READ) 7051 fp->rf_access_read++; 7052 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7053 fp->rf_access_write++; 7054 fp->rf_share_access |= access; 7055 7056 /* 7057 * Check for delegation here. if the deleg argument is not 7058 * DELEG_ANY, then this is a reclaim from a client and 7059 * we must honor the delegation requested. If necessary we can 7060 * set the recall flag. 7061 */ 7062 7063 dsp = rfs4_grant_delegation(deleg, sp, &recall); 7064 7065 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 7066 7067 next_stateid(&sp->rs_stateid); 7068 7069 resp->stateid = sp->rs_stateid.stateid; 7070 7071 rfs4_dbe_unlock(fp->rf_dbe); 7072 rfs4_dbe_unlock(sp->rs_dbe); 7073 7074 if (dsp) { 7075 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 7076 rfs4_deleg_state_rele(dsp); 7077 } 7078 7079 rfs4_file_rele(fp); 7080 rfs4_state_rele(sp); 7081 7082 resp->status = NFS4_OK; 7083 } 7084 7085 /*ARGSUSED*/ 7086 static void 7087 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 7088 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7089 { 7090 change_info4 *cinfo = &resp->cinfo; 7091 bitmap4 *attrset = &resp->attrset; 7092 7093 if (args->opentype == OPEN4_NOCREATE) 7094 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 7095 req, cs, args->share_access, cinfo); 7096 else { 7097 /* inhibit delegation grants during exclusive create */ 7098 7099 if (args->mode == EXCLUSIVE4) 7100 rfs4_disable_delegation(); 7101 7102 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7103 oo->ro_client->rc_clientid); 7104 } 7105 7106 if (resp->status == NFS4_OK) { 7107 7108 /* cs->vp cs->fh now reference the desired file */ 7109 7110 rfs4_do_open(cs, req, oo, 7111 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7112 args->share_access, args->share_deny, resp, 0); 7113 7114 /* 7115 * If rfs4_createfile set attrset, we must 7116 * clear this attrset before the response is copied. 7117 */ 7118 if (resp->status != NFS4_OK && resp->attrset) { 7119 resp->attrset = 0; 7120 } 7121 } 7122 else 7123 *cs->statusp = resp->status; 7124 7125 if (args->mode == EXCLUSIVE4) 7126 rfs4_enable_delegation(); 7127 } 7128 7129 /*ARGSUSED*/ 7130 static void 7131 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7132 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7133 { 7134 change_info4 *cinfo = &resp->cinfo; 7135 vattr_t va; 7136 vtype_t v_type = cs->vp->v_type; 7137 int error = 0; 7138 7139 /* Verify that we have a regular file */ 7140 if (v_type != VREG) { 7141 if (v_type == VDIR) 7142 resp->status = NFS4ERR_ISDIR; 7143 else if (v_type == VLNK) 7144 resp->status = NFS4ERR_SYMLINK; 7145 else 7146 resp->status = NFS4ERR_INVAL; 7147 return; 7148 } 7149 7150 va.va_mask = AT_MODE|AT_UID; 7151 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7152 if (error) { 7153 resp->status = puterrno4(error); 7154 return; 7155 } 7156 7157 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7158 7159 /* 7160 * Check if we have access to the file, Note the the file 7161 * could have originally been open UNCHECKED or GUARDED 7162 * with mode bits that will now fail, but there is nothing 7163 * we can really do about that except in the case that the 7164 * owner of the file is the one requesting the open. 7165 */ 7166 if (crgetuid(cs->cr) != va.va_uid) { 7167 resp->status = check_open_access(args->share_access, cs, req); 7168 if (resp->status != NFS4_OK) { 7169 return; 7170 } 7171 } 7172 7173 /* 7174 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7175 */ 7176 cinfo->before = 0; 7177 cinfo->after = 0; 7178 cinfo->atomic = FALSE; 7179 7180 rfs4_do_open(cs, req, oo, 7181 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7182 args->share_access, args->share_deny, resp, 0); 7183 } 7184 7185 static void 7186 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7187 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7188 { 7189 int error; 7190 nfsstat4 status; 7191 stateid4 stateid = 7192 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7193 rfs4_deleg_state_t *dsp; 7194 7195 /* 7196 * Find the state info from the stateid and confirm that the 7197 * file is delegated. If the state openowner is the same as 7198 * the supplied openowner we're done. If not, get the file 7199 * info from the found state info. Use that file info to 7200 * create the state for this lock owner. Note solaris doen't 7201 * really need the pathname to find the file. We may want to 7202 * lookup the pathname and make sure that the vp exist and 7203 * matches the vp in the file structure. However it is 7204 * possible that the pathname nolonger exists (local process 7205 * unlinks the file), so this may not be that useful. 7206 */ 7207 7208 status = rfs4_get_deleg_state(&stateid, &dsp); 7209 if (status != NFS4_OK) { 7210 resp->status = status; 7211 return; 7212 } 7213 7214 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7215 7216 /* 7217 * New lock owner, create state. Since this was probably called 7218 * in response to a CB_RECALL we set deleg to DELEG_NONE 7219 */ 7220 7221 ASSERT(cs->vp != NULL); 7222 VN_RELE(cs->vp); 7223 VN_HOLD(dsp->rds_finfo->rf_vp); 7224 cs->vp = dsp->rds_finfo->rf_vp; 7225 7226 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7227 rfs4_deleg_state_rele(dsp); 7228 *cs->statusp = resp->status = puterrno4(error); 7229 return; 7230 } 7231 7232 /* Mark progress for delegation returns */ 7233 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7234 rfs4_deleg_state_rele(dsp); 7235 rfs4_do_open(cs, req, oo, DELEG_NONE, 7236 args->share_access, args->share_deny, resp, 1); 7237 } 7238 7239 /*ARGSUSED*/ 7240 static void 7241 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7242 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7243 { 7244 /* 7245 * Lookup the pathname, it must already exist since this file 7246 * was delegated. 7247 * 7248 * Find the file and state info for this vp and open owner pair. 7249 * check that they are in fact delegated. 7250 * check that the state access and deny modes are the same. 7251 * 7252 * Return the delgation possibly seting the recall flag. 7253 */ 7254 rfs4_file_t *fp; 7255 rfs4_state_t *sp; 7256 bool_t create = FALSE; 7257 bool_t dcreate = FALSE; 7258 rfs4_deleg_state_t *dsp; 7259 nfsace4 *ace; 7260 7261 /* Note we ignore oflags */ 7262 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7263 req, cs, args->share_access, &resp->cinfo); 7264 7265 if (resp->status != NFS4_OK) { 7266 return; 7267 } 7268 7269 /* get the file struct and hold a lock on it during initial open */ 7270 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7271 if (fp == NULL) { 7272 resp->status = NFS4ERR_RESOURCE; 7273 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7274 return; 7275 } 7276 7277 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7278 if (sp == NULL) { 7279 resp->status = NFS4ERR_SERVERFAULT; 7280 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7281 rw_exit(&fp->rf_file_rwlock); 7282 rfs4_file_rele(fp); 7283 return; 7284 } 7285 7286 rfs4_dbe_lock(sp->rs_dbe); 7287 rfs4_dbe_lock(fp->rf_dbe); 7288 if (args->share_access != sp->rs_share_access || 7289 args->share_deny != sp->rs_share_deny || 7290 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7291 NFS4_DEBUG(rfs4_debug, 7292 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7293 rfs4_dbe_unlock(fp->rf_dbe); 7294 rfs4_dbe_unlock(sp->rs_dbe); 7295 rfs4_file_rele(fp); 7296 rfs4_state_rele(sp); 7297 resp->status = NFS4ERR_SERVERFAULT; 7298 return; 7299 } 7300 rfs4_dbe_unlock(fp->rf_dbe); 7301 rfs4_dbe_unlock(sp->rs_dbe); 7302 7303 dsp = rfs4_finddeleg(sp, &dcreate); 7304 if (dsp == NULL) { 7305 rfs4_state_rele(sp); 7306 rfs4_file_rele(fp); 7307 resp->status = NFS4ERR_SERVERFAULT; 7308 return; 7309 } 7310 7311 next_stateid(&sp->rs_stateid); 7312 7313 resp->stateid = sp->rs_stateid.stateid; 7314 7315 resp->delegation.delegation_type = dsp->rds_dtype; 7316 7317 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7318 open_read_delegation4 *rv = 7319 &resp->delegation.open_delegation4_u.read; 7320 7321 rv->stateid = dsp->rds_delegid.stateid; 7322 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7323 ace = &rv->permissions; 7324 } else { 7325 open_write_delegation4 *rv = 7326 &resp->delegation.open_delegation4_u.write; 7327 7328 rv->stateid = dsp->rds_delegid.stateid; 7329 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7330 ace = &rv->permissions; 7331 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7332 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7333 } 7334 7335 /* XXX For now */ 7336 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7337 ace->flag = 0; 7338 ace->access_mask = 0; 7339 ace->who.utf8string_len = 0; 7340 ace->who.utf8string_val = 0; 7341 7342 rfs4_deleg_state_rele(dsp); 7343 rfs4_state_rele(sp); 7344 rfs4_file_rele(fp); 7345 } 7346 7347 typedef enum { 7348 NFS4_CHKSEQ_OKAY = 0, 7349 NFS4_CHKSEQ_REPLAY = 1, 7350 NFS4_CHKSEQ_BAD = 2 7351 } rfs4_chkseq_t; 7352 7353 /* 7354 * Generic function for sequence number checks. 7355 */ 7356 static rfs4_chkseq_t 7357 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7358 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7359 { 7360 /* Same sequence ids and matching operations? */ 7361 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7362 if (copyres == TRUE) { 7363 rfs4_free_reply(resop); 7364 rfs4_copy_reply(resop, lastop); 7365 } 7366 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7367 "Replayed SEQID %d\n", seqid)); 7368 return (NFS4_CHKSEQ_REPLAY); 7369 } 7370 7371 /* If the incoming sequence is not the next expected then it is bad */ 7372 if (rqst_seq != seqid + 1) { 7373 if (rqst_seq == seqid) { 7374 NFS4_DEBUG(rfs4_debug, 7375 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7376 "but last op was %d current op is %d\n", 7377 lastop->resop, resop->resop)); 7378 return (NFS4_CHKSEQ_BAD); 7379 } 7380 NFS4_DEBUG(rfs4_debug, 7381 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7382 rqst_seq, seqid)); 7383 return (NFS4_CHKSEQ_BAD); 7384 } 7385 7386 /* Everything okay -- next expected */ 7387 return (NFS4_CHKSEQ_OKAY); 7388 } 7389 7390 7391 static rfs4_chkseq_t 7392 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7393 { 7394 rfs4_chkseq_t rc; 7395 7396 rfs4_dbe_lock(op->ro_dbe); 7397 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7398 TRUE); 7399 rfs4_dbe_unlock(op->ro_dbe); 7400 7401 if (rc == NFS4_CHKSEQ_OKAY) 7402 rfs4_update_lease(op->ro_client); 7403 7404 return (rc); 7405 } 7406 7407 static rfs4_chkseq_t 7408 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7409 { 7410 rfs4_chkseq_t rc; 7411 7412 rfs4_dbe_lock(op->ro_dbe); 7413 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7414 olo_seqid, resop, FALSE); 7415 rfs4_dbe_unlock(op->ro_dbe); 7416 7417 return (rc); 7418 } 7419 7420 static rfs4_chkseq_t 7421 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7422 { 7423 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7424 7425 rfs4_dbe_lock(lsp->rls_dbe); 7426 if (!lsp->rls_skip_seqid_check) 7427 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7428 resop, TRUE); 7429 rfs4_dbe_unlock(lsp->rls_dbe); 7430 7431 return (rc); 7432 } 7433 7434 static void 7435 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7436 struct svc_req *req, struct compound_state *cs) 7437 { 7438 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7439 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7440 open_owner4 *owner = &args->owner; 7441 open_claim_type4 claim = args->claim; 7442 rfs4_client_t *cp; 7443 rfs4_openowner_t *oo; 7444 bool_t create; 7445 bool_t replay = FALSE; 7446 int can_reclaim; 7447 7448 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7449 OPEN4args *, args); 7450 7451 if (cs->vp == NULL) { 7452 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7453 goto end; 7454 } 7455 7456 /* 7457 * Need to check clientid and lease expiration first based on 7458 * error ordering and incrementing sequence id. 7459 */ 7460 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7461 if (cp == NULL) { 7462 *cs->statusp = resp->status = 7463 rfs4_check_clientid(&owner->clientid, 0); 7464 goto end; 7465 } 7466 7467 if (rfs4_lease_expired(cp)) { 7468 rfs4_client_close(cp); 7469 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7470 goto end; 7471 } 7472 can_reclaim = cp->rc_can_reclaim; 7473 7474 /* 7475 * Find the open_owner for use from this point forward. Take 7476 * care in updating the sequence id based on the type of error 7477 * being returned. 7478 */ 7479 retry: 7480 create = TRUE; 7481 oo = rfs4_findopenowner(owner, &create, args->seqid); 7482 if (oo == NULL) { 7483 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7484 rfs4_client_rele(cp); 7485 goto end; 7486 } 7487 7488 /* Hold off access to the sequence space while the open is done */ 7489 rfs4_sw_enter(&oo->ro_sw); 7490 7491 /* 7492 * If the open_owner existed before at the server, then check 7493 * the sequence id. 7494 */ 7495 if (!create && !oo->ro_postpone_confirm) { 7496 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7497 case NFS4_CHKSEQ_BAD: 7498 if ((args->seqid > oo->ro_open_seqid) && 7499 oo->ro_need_confirm) { 7500 rfs4_free_opens(oo, TRUE, FALSE); 7501 rfs4_sw_exit(&oo->ro_sw); 7502 rfs4_openowner_rele(oo); 7503 goto retry; 7504 } 7505 resp->status = NFS4ERR_BAD_SEQID; 7506 goto out; 7507 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7508 replay = TRUE; 7509 goto out; 7510 default: 7511 break; 7512 } 7513 7514 /* 7515 * Sequence was ok and open owner exists 7516 * check to see if we have yet to see an 7517 * open_confirm. 7518 */ 7519 if (oo->ro_need_confirm) { 7520 rfs4_free_opens(oo, TRUE, FALSE); 7521 rfs4_sw_exit(&oo->ro_sw); 7522 rfs4_openowner_rele(oo); 7523 goto retry; 7524 } 7525 } 7526 /* Grace only applies to regular-type OPENs */ 7527 if (rfs4_clnt_in_grace(cp) && 7528 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7529 *cs->statusp = resp->status = NFS4ERR_GRACE; 7530 goto out; 7531 } 7532 7533 /* 7534 * If previous state at the server existed then can_reclaim 7535 * will be set. If not reply NFS4ERR_NO_GRACE to the 7536 * client. 7537 */ 7538 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7539 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7540 goto out; 7541 } 7542 7543 7544 /* 7545 * Reject the open if the client has missed the grace period 7546 */ 7547 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7548 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7549 goto out; 7550 } 7551 7552 /* Couple of up-front bookkeeping items */ 7553 if (oo->ro_need_confirm) { 7554 /* 7555 * If this is a reclaim OPEN then we should not ask 7556 * for a confirmation of the open_owner per the 7557 * protocol specification. 7558 */ 7559 if (claim == CLAIM_PREVIOUS) 7560 oo->ro_need_confirm = FALSE; 7561 else 7562 resp->rflags |= OPEN4_RESULT_CONFIRM; 7563 } 7564 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7565 7566 /* 7567 * If there is an unshared filesystem mounted on this vnode, 7568 * do not allow to open/create in this directory. 7569 */ 7570 if (vn_ismntpt(cs->vp)) { 7571 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7572 goto out; 7573 } 7574 7575 /* 7576 * access must READ, WRITE, or BOTH. No access is invalid. 7577 * deny can be READ, WRITE, BOTH, or NONE. 7578 * bits not defined for access/deny are invalid. 7579 */ 7580 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7581 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7582 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7583 *cs->statusp = resp->status = NFS4ERR_INVAL; 7584 goto out; 7585 } 7586 7587 7588 /* 7589 * make sure attrset is zero before response is built. 7590 */ 7591 resp->attrset = 0; 7592 7593 switch (claim) { 7594 case CLAIM_NULL: 7595 rfs4_do_opennull(cs, req, args, oo, resp); 7596 break; 7597 case CLAIM_PREVIOUS: 7598 rfs4_do_openprev(cs, req, args, oo, resp); 7599 break; 7600 case CLAIM_DELEGATE_CUR: 7601 rfs4_do_opendelcur(cs, req, args, oo, resp); 7602 break; 7603 case CLAIM_DELEGATE_PREV: 7604 rfs4_do_opendelprev(cs, req, args, oo, resp); 7605 break; 7606 default: 7607 resp->status = NFS4ERR_INVAL; 7608 break; 7609 } 7610 7611 out: 7612 rfs4_client_rele(cp); 7613 7614 /* Catch sequence id handling here to make it a little easier */ 7615 switch (resp->status) { 7616 case NFS4ERR_BADXDR: 7617 case NFS4ERR_BAD_SEQID: 7618 case NFS4ERR_BAD_STATEID: 7619 case NFS4ERR_NOFILEHANDLE: 7620 case NFS4ERR_RESOURCE: 7621 case NFS4ERR_STALE_CLIENTID: 7622 case NFS4ERR_STALE_STATEID: 7623 /* 7624 * The protocol states that if any of these errors are 7625 * being returned, the sequence id should not be 7626 * incremented. Any other return requires an 7627 * increment. 7628 */ 7629 break; 7630 default: 7631 /* Always update the lease in this case */ 7632 rfs4_update_lease(oo->ro_client); 7633 7634 /* Regular response - copy the result */ 7635 if (!replay) 7636 rfs4_update_open_resp(oo, resop, &cs->fh); 7637 7638 /* 7639 * REPLAY case: Only if the previous response was OK 7640 * do we copy the filehandle. If not OK, no 7641 * filehandle to copy. 7642 */ 7643 if (replay == TRUE && 7644 resp->status == NFS4_OK && 7645 oo->ro_reply_fh.nfs_fh4_val) { 7646 /* 7647 * If this is a replay, we must restore the 7648 * current filehandle/vp to that of what was 7649 * returned originally. Try our best to do 7650 * it. 7651 */ 7652 nfs_fh4_fmt_t *fh_fmtp = 7653 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7654 7655 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7656 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7657 7658 if (cs->exi == NULL) { 7659 resp->status = NFS4ERR_STALE; 7660 goto finish; 7661 } 7662 7663 VN_RELE(cs->vp); 7664 7665 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7666 &resp->status); 7667 7668 if (cs->vp == NULL) 7669 goto finish; 7670 7671 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7672 } 7673 7674 /* 7675 * If this was a replay, no need to update the 7676 * sequence id. If the open_owner was not created on 7677 * this pass, then update. The first use of an 7678 * open_owner will not bump the sequence id. 7679 */ 7680 if (replay == FALSE && !create) 7681 rfs4_update_open_sequence(oo); 7682 /* 7683 * If the client is receiving an error and the 7684 * open_owner needs to be confirmed, there is no way 7685 * to notify the client of this fact ignoring the fact 7686 * that the server has no method of returning a 7687 * stateid to confirm. Therefore, the server needs to 7688 * mark this open_owner in a way as to avoid the 7689 * sequence id checking the next time the client uses 7690 * this open_owner. 7691 */ 7692 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7693 oo->ro_postpone_confirm = TRUE; 7694 /* 7695 * If OK response then clear the postpone flag and 7696 * reset the sequence id to keep in sync with the 7697 * client. 7698 */ 7699 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7700 oo->ro_postpone_confirm = FALSE; 7701 oo->ro_open_seqid = args->seqid; 7702 } 7703 break; 7704 } 7705 7706 finish: 7707 *cs->statusp = resp->status; 7708 7709 rfs4_sw_exit(&oo->ro_sw); 7710 rfs4_openowner_rele(oo); 7711 7712 end: 7713 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7714 OPEN4res *, resp); 7715 } 7716 7717 /*ARGSUSED*/ 7718 void 7719 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7720 struct svc_req *req, struct compound_state *cs) 7721 { 7722 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7723 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7724 rfs4_state_t *sp; 7725 nfsstat4 status; 7726 7727 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7728 OPEN_CONFIRM4args *, args); 7729 7730 if (cs->vp == NULL) { 7731 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7732 goto out; 7733 } 7734 7735 if (cs->vp->v_type != VREG) { 7736 *cs->statusp = resp->status = 7737 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7738 return; 7739 } 7740 7741 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7742 if (status != NFS4_OK) { 7743 *cs->statusp = resp->status = status; 7744 goto out; 7745 } 7746 7747 /* Ensure specified filehandle matches */ 7748 if (cs->vp != sp->rs_finfo->rf_vp) { 7749 rfs4_state_rele(sp); 7750 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7751 goto out; 7752 } 7753 7754 /* hold off other access to open_owner while we tinker */ 7755 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7756 7757 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7758 case NFS4_CHECK_STATEID_OKAY: 7759 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7760 resop) != 0) { 7761 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7762 break; 7763 } 7764 /* 7765 * If it is the appropriate stateid and determined to 7766 * be "OKAY" then this means that the stateid does not 7767 * need to be confirmed and the client is in error for 7768 * sending an OPEN_CONFIRM. 7769 */ 7770 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7771 break; 7772 case NFS4_CHECK_STATEID_OLD: 7773 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7774 break; 7775 case NFS4_CHECK_STATEID_BAD: 7776 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7777 break; 7778 case NFS4_CHECK_STATEID_EXPIRED: 7779 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7780 break; 7781 case NFS4_CHECK_STATEID_CLOSED: 7782 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7783 break; 7784 case NFS4_CHECK_STATEID_REPLAY: 7785 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7786 resop)) { 7787 case NFS4_CHKSEQ_OKAY: 7788 /* 7789 * This is replayed stateid; if seqid matches 7790 * next expected, then client is using wrong seqid. 7791 */ 7792 /* fall through */ 7793 case NFS4_CHKSEQ_BAD: 7794 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7795 break; 7796 case NFS4_CHKSEQ_REPLAY: 7797 /* 7798 * Note this case is the duplicate case so 7799 * resp->status is already set. 7800 */ 7801 *cs->statusp = resp->status; 7802 rfs4_update_lease(sp->rs_owner->ro_client); 7803 break; 7804 } 7805 break; 7806 case NFS4_CHECK_STATEID_UNCONFIRMED: 7807 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7808 resop) != NFS4_CHKSEQ_OKAY) { 7809 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7810 break; 7811 } 7812 *cs->statusp = resp->status = NFS4_OK; 7813 7814 next_stateid(&sp->rs_stateid); 7815 resp->open_stateid = sp->rs_stateid.stateid; 7816 sp->rs_owner->ro_need_confirm = FALSE; 7817 rfs4_update_lease(sp->rs_owner->ro_client); 7818 rfs4_update_open_sequence(sp->rs_owner); 7819 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7820 break; 7821 default: 7822 ASSERT(FALSE); 7823 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7824 break; 7825 } 7826 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7827 rfs4_state_rele(sp); 7828 7829 out: 7830 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7831 OPEN_CONFIRM4res *, resp); 7832 } 7833 7834 /*ARGSUSED*/ 7835 void 7836 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7837 struct svc_req *req, struct compound_state *cs) 7838 { 7839 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7840 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7841 uint32_t access = args->share_access; 7842 uint32_t deny = args->share_deny; 7843 nfsstat4 status; 7844 rfs4_state_t *sp; 7845 rfs4_file_t *fp; 7846 int fflags = 0; 7847 7848 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7849 OPEN_DOWNGRADE4args *, args); 7850 7851 if (cs->vp == NULL) { 7852 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7853 goto out; 7854 } 7855 7856 if (cs->vp->v_type != VREG) { 7857 *cs->statusp = resp->status = NFS4ERR_INVAL; 7858 return; 7859 } 7860 7861 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7862 if (status != NFS4_OK) { 7863 *cs->statusp = resp->status = status; 7864 goto out; 7865 } 7866 7867 /* Ensure specified filehandle matches */ 7868 if (cs->vp != sp->rs_finfo->rf_vp) { 7869 rfs4_state_rele(sp); 7870 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7871 goto out; 7872 } 7873 7874 /* hold off other access to open_owner while we tinker */ 7875 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7876 7877 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7878 case NFS4_CHECK_STATEID_OKAY: 7879 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7880 resop) != NFS4_CHKSEQ_OKAY) { 7881 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7882 goto end; 7883 } 7884 break; 7885 case NFS4_CHECK_STATEID_OLD: 7886 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7887 goto end; 7888 case NFS4_CHECK_STATEID_BAD: 7889 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7890 goto end; 7891 case NFS4_CHECK_STATEID_EXPIRED: 7892 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7893 goto end; 7894 case NFS4_CHECK_STATEID_CLOSED: 7895 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7896 goto end; 7897 case NFS4_CHECK_STATEID_UNCONFIRMED: 7898 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7899 goto end; 7900 case NFS4_CHECK_STATEID_REPLAY: 7901 /* Check the sequence id for the open owner */ 7902 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7903 resop)) { 7904 case NFS4_CHKSEQ_OKAY: 7905 /* 7906 * This is replayed stateid; if seqid matches 7907 * next expected, then client is using wrong seqid. 7908 */ 7909 /* fall through */ 7910 case NFS4_CHKSEQ_BAD: 7911 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7912 goto end; 7913 case NFS4_CHKSEQ_REPLAY: 7914 /* 7915 * Note this case is the duplicate case so 7916 * resp->status is already set. 7917 */ 7918 *cs->statusp = resp->status; 7919 rfs4_update_lease(sp->rs_owner->ro_client); 7920 goto end; 7921 } 7922 break; 7923 default: 7924 ASSERT(FALSE); 7925 break; 7926 } 7927 7928 rfs4_dbe_lock(sp->rs_dbe); 7929 /* 7930 * Check that the new access modes and deny modes are valid. 7931 * Check that no invalid bits are set. 7932 */ 7933 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7934 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7935 *cs->statusp = resp->status = NFS4ERR_INVAL; 7936 rfs4_update_open_sequence(sp->rs_owner); 7937 rfs4_dbe_unlock(sp->rs_dbe); 7938 goto end; 7939 } 7940 7941 /* 7942 * The new modes must be a subset of the current modes and 7943 * the access must specify at least one mode. To test that 7944 * the new mode is a subset of the current modes we bitwise 7945 * AND them together and check that the result equals the new 7946 * mode. For example: 7947 * New mode, access == R and current mode, sp->rs_open_access == RW 7948 * access & sp->rs_open_access == R == access, so the new access mode 7949 * is valid. Consider access == RW, sp->rs_open_access = R 7950 * access & sp->rs_open_access == R != access, so the new access mode 7951 * is invalid. 7952 */ 7953 if ((access & sp->rs_open_access) != access || 7954 (deny & sp->rs_open_deny) != deny || 7955 (access & 7956 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7957 *cs->statusp = resp->status = NFS4ERR_INVAL; 7958 rfs4_update_open_sequence(sp->rs_owner); 7959 rfs4_dbe_unlock(sp->rs_dbe); 7960 goto end; 7961 } 7962 7963 /* 7964 * Release any share locks associated with this stateID. 7965 * Strictly speaking, this violates the spec because the 7966 * spec effectively requires that open downgrade be atomic. 7967 * At present, fs_shrlock does not have this capability. 7968 */ 7969 (void) rfs4_unshare(sp); 7970 7971 status = rfs4_share(sp, access, deny); 7972 if (status != NFS4_OK) { 7973 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7974 rfs4_update_open_sequence(sp->rs_owner); 7975 rfs4_dbe_unlock(sp->rs_dbe); 7976 goto end; 7977 } 7978 7979 fp = sp->rs_finfo; 7980 rfs4_dbe_lock(fp->rf_dbe); 7981 7982 /* 7983 * If the current mode has deny read and the new mode 7984 * does not, decrement the number of deny read mode bits 7985 * and if it goes to zero turn off the deny read bit 7986 * on the file. 7987 */ 7988 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7989 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7990 fp->rf_deny_read--; 7991 if (fp->rf_deny_read == 0) 7992 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7993 } 7994 7995 /* 7996 * If the current mode has deny write and the new mode 7997 * does not, decrement the number of deny write mode bits 7998 * and if it goes to zero turn off the deny write bit 7999 * on the file. 8000 */ 8001 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 8002 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 8003 fp->rf_deny_write--; 8004 if (fp->rf_deny_write == 0) 8005 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8006 } 8007 8008 /* 8009 * If the current mode has access read and the new mode 8010 * does not, decrement the number of access read mode bits 8011 * and if it goes to zero turn off the access read bit 8012 * on the file. set fflags to FREAD for the call to 8013 * vn_open_downgrade(). 8014 */ 8015 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 8016 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 8017 fp->rf_access_read--; 8018 if (fp->rf_access_read == 0) 8019 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8020 fflags |= FREAD; 8021 } 8022 8023 /* 8024 * If the current mode has access write and the new mode 8025 * does not, decrement the number of access write mode bits 8026 * and if it goes to zero turn off the access write bit 8027 * on the file. set fflags to FWRITE for the call to 8028 * vn_open_downgrade(). 8029 */ 8030 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 8031 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8032 fp->rf_access_write--; 8033 if (fp->rf_access_write == 0) 8034 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 8035 fflags |= FWRITE; 8036 } 8037 8038 /* Check that the file is still accessible */ 8039 ASSERT(fp->rf_share_access); 8040 8041 rfs4_dbe_unlock(fp->rf_dbe); 8042 8043 /* now set the new open access and deny modes */ 8044 sp->rs_open_access = access; 8045 sp->rs_open_deny = deny; 8046 8047 /* 8048 * we successfully downgraded the share lock, now we need to downgrade 8049 * the open. it is possible that the downgrade was only for a deny 8050 * mode and we have nothing else to do. 8051 */ 8052 if ((fflags & (FREAD|FWRITE)) != 0) 8053 vn_open_downgrade(cs->vp, fflags); 8054 8055 /* Update the stateid */ 8056 next_stateid(&sp->rs_stateid); 8057 resp->open_stateid = sp->rs_stateid.stateid; 8058 8059 rfs4_dbe_unlock(sp->rs_dbe); 8060 8061 *cs->statusp = resp->status = NFS4_OK; 8062 /* Update the lease */ 8063 rfs4_update_lease(sp->rs_owner->ro_client); 8064 /* And the sequence */ 8065 rfs4_update_open_sequence(sp->rs_owner); 8066 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8067 8068 end: 8069 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8070 rfs4_state_rele(sp); 8071 out: 8072 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 8073 OPEN_DOWNGRADE4res *, resp); 8074 } 8075 8076 static void * 8077 memstr(const void *s1, const char *s2, size_t n) 8078 { 8079 size_t l = strlen(s2); 8080 char *p = (char *)s1; 8081 8082 while (n >= l) { 8083 if (bcmp(p, s2, l) == 0) 8084 return (p); 8085 p++; 8086 n--; 8087 } 8088 8089 return (NULL); 8090 } 8091 8092 /* 8093 * The logic behind this function is detailed in the NFSv4 RFC in the 8094 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8095 * that section for explicit guidance to server behavior for 8096 * SETCLIENTID. 8097 */ 8098 void 8099 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8100 struct svc_req *req, struct compound_state *cs) 8101 { 8102 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8103 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8104 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8105 rfs4_clntip_t *ci; 8106 bool_t create; 8107 char *addr, *netid; 8108 int len; 8109 8110 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8111 SETCLIENTID4args *, args); 8112 retry: 8113 newcp = cp_confirmed = cp_unconfirmed = NULL; 8114 8115 /* 8116 * Save the caller's IP address 8117 */ 8118 args->client.cl_addr = 8119 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8120 8121 /* 8122 * Record if it is a Solaris client that cannot handle referrals. 8123 */ 8124 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8125 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8126 /* Add a "yes, it's downrev" record */ 8127 create = TRUE; 8128 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8129 ASSERT(ci != NULL); 8130 rfs4_dbe_rele(ci->ri_dbe); 8131 } else { 8132 /* Remove any previous record */ 8133 rfs4_invalidate_clntip(args->client.cl_addr); 8134 } 8135 8136 /* 8137 * In search of an EXISTING client matching the incoming 8138 * request to establish a new client identifier at the server 8139 */ 8140 create = TRUE; 8141 cp = rfs4_findclient(&args->client, &create, NULL); 8142 8143 /* Should never happen */ 8144 ASSERT(cp != NULL); 8145 8146 if (cp == NULL) { 8147 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8148 goto out; 8149 } 8150 8151 /* 8152 * Easiest case. Client identifier is newly created and is 8153 * unconfirmed. Also note that for this case, no other 8154 * entries exist for the client identifier. Nothing else to 8155 * check. Just setup the response and respond. 8156 */ 8157 if (create) { 8158 *cs->statusp = res->status = NFS4_OK; 8159 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8160 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8161 cp->rc_confirm_verf; 8162 /* Setup callback information; CB_NULL confirmation later */ 8163 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8164 8165 rfs4_client_rele(cp); 8166 goto out; 8167 } 8168 8169 /* 8170 * An existing, confirmed client may exist but it may not have 8171 * been active for at least one lease period. If so, then 8172 * "close" the client and create a new client identifier 8173 */ 8174 if (rfs4_lease_expired(cp)) { 8175 rfs4_client_close(cp); 8176 goto retry; 8177 } 8178 8179 if (cp->rc_need_confirm == TRUE) 8180 cp_unconfirmed = cp; 8181 else 8182 cp_confirmed = cp; 8183 8184 cp = NULL; 8185 8186 /* 8187 * We have a confirmed client, now check for an 8188 * unconfimred entry 8189 */ 8190 if (cp_confirmed) { 8191 /* If creds don't match then client identifier is inuse */ 8192 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8193 rfs4_cbinfo_t *cbp; 8194 /* 8195 * Some one else has established this client 8196 * id. Try and say * who they are. We will use 8197 * the call back address supplied by * the 8198 * first client. 8199 */ 8200 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8201 8202 addr = netid = NULL; 8203 8204 cbp = &cp_confirmed->rc_cbinfo; 8205 if (cbp->cb_callback.cb_location.r_addr && 8206 cbp->cb_callback.cb_location.r_netid) { 8207 cb_client4 *cbcp = &cbp->cb_callback; 8208 8209 len = strlen(cbcp->cb_location.r_addr)+1; 8210 addr = kmem_alloc(len, KM_SLEEP); 8211 bcopy(cbcp->cb_location.r_addr, addr, len); 8212 len = strlen(cbcp->cb_location.r_netid)+1; 8213 netid = kmem_alloc(len, KM_SLEEP); 8214 bcopy(cbcp->cb_location.r_netid, netid, len); 8215 } 8216 8217 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8218 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8219 8220 rfs4_client_rele(cp_confirmed); 8221 } 8222 8223 /* 8224 * Confirmed, creds match, and verifier matches; must 8225 * be an update of the callback info 8226 */ 8227 if (cp_confirmed->rc_nfs_client.verifier == 8228 args->client.verifier) { 8229 /* Setup callback information */ 8230 rfs4_client_setcb(cp_confirmed, &args->callback, 8231 args->callback_ident); 8232 8233 /* everything okay -- move ahead */ 8234 *cs->statusp = res->status = NFS4_OK; 8235 res->SETCLIENTID4res_u.resok4.clientid = 8236 cp_confirmed->rc_clientid; 8237 8238 /* update the confirm_verifier and return it */ 8239 rfs4_client_scv_next(cp_confirmed); 8240 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8241 cp_confirmed->rc_confirm_verf; 8242 8243 rfs4_client_rele(cp_confirmed); 8244 goto out; 8245 } 8246 8247 /* 8248 * Creds match but the verifier doesn't. Must search 8249 * for an unconfirmed client that would be replaced by 8250 * this request. 8251 */ 8252 create = FALSE; 8253 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8254 cp_confirmed); 8255 } 8256 8257 /* 8258 * At this point, we have taken care of the brand new client 8259 * struct, INUSE case, update of an existing, and confirmed 8260 * client struct. 8261 */ 8262 8263 /* 8264 * check to see if things have changed while we originally 8265 * picked up the client struct. If they have, then return and 8266 * retry the processing of this SETCLIENTID request. 8267 */ 8268 if (cp_unconfirmed) { 8269 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8270 if (!cp_unconfirmed->rc_need_confirm) { 8271 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8272 rfs4_client_rele(cp_unconfirmed); 8273 if (cp_confirmed) 8274 rfs4_client_rele(cp_confirmed); 8275 goto retry; 8276 } 8277 /* do away with the old unconfirmed one */ 8278 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8279 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8280 rfs4_client_rele(cp_unconfirmed); 8281 cp_unconfirmed = NULL; 8282 } 8283 8284 /* 8285 * This search will temporarily hide the confirmed client 8286 * struct while a new client struct is created as the 8287 * unconfirmed one. 8288 */ 8289 create = TRUE; 8290 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8291 8292 ASSERT(newcp != NULL); 8293 8294 if (newcp == NULL) { 8295 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8296 rfs4_client_rele(cp_confirmed); 8297 goto out; 8298 } 8299 8300 /* 8301 * If one was not created, then a similar request must be in 8302 * process so release and start over with this one 8303 */ 8304 if (create != TRUE) { 8305 rfs4_client_rele(newcp); 8306 if (cp_confirmed) 8307 rfs4_client_rele(cp_confirmed); 8308 goto retry; 8309 } 8310 8311 *cs->statusp = res->status = NFS4_OK; 8312 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8313 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8314 newcp->rc_confirm_verf; 8315 /* Setup callback information; CB_NULL confirmation later */ 8316 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8317 8318 newcp->rc_cp_confirmed = cp_confirmed; 8319 8320 rfs4_client_rele(newcp); 8321 8322 out: 8323 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8324 SETCLIENTID4res *, res); 8325 } 8326 8327 /*ARGSUSED*/ 8328 void 8329 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8330 struct svc_req *req, struct compound_state *cs) 8331 { 8332 SETCLIENTID_CONFIRM4args *args = 8333 &argop->nfs_argop4_u.opsetclientid_confirm; 8334 SETCLIENTID_CONFIRM4res *res = 8335 &resop->nfs_resop4_u.opsetclientid_confirm; 8336 rfs4_client_t *cp, *cptoclose = NULL; 8337 8338 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8339 struct compound_state *, cs, 8340 SETCLIENTID_CONFIRM4args *, args); 8341 8342 *cs->statusp = res->status = NFS4_OK; 8343 8344 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8345 8346 if (cp == NULL) { 8347 *cs->statusp = res->status = 8348 rfs4_check_clientid(&args->clientid, 1); 8349 goto out; 8350 } 8351 8352 if (!creds_ok(cp, req, cs)) { 8353 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8354 rfs4_client_rele(cp); 8355 goto out; 8356 } 8357 8358 /* If the verifier doesn't match, the record doesn't match */ 8359 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8360 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8361 rfs4_client_rele(cp); 8362 goto out; 8363 } 8364 8365 rfs4_dbe_lock(cp->rc_dbe); 8366 cp->rc_need_confirm = FALSE; 8367 if (cp->rc_cp_confirmed) { 8368 cptoclose = cp->rc_cp_confirmed; 8369 cptoclose->rc_ss_remove = 1; 8370 cp->rc_cp_confirmed = NULL; 8371 } 8372 8373 /* 8374 * Update the client's associated server instance, if it's changed 8375 * since the client was created. 8376 */ 8377 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8378 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8379 8380 /* 8381 * Record clientid in stable storage. 8382 * Must be done after server instance has been assigned. 8383 */ 8384 rfs4_ss_clid(cp); 8385 8386 rfs4_dbe_unlock(cp->rc_dbe); 8387 8388 if (cptoclose) 8389 /* don't need to rele, client_close does it */ 8390 rfs4_client_close(cptoclose); 8391 8392 /* If needed, initiate CB_NULL call for callback path */ 8393 rfs4_deleg_cb_check(cp); 8394 rfs4_update_lease(cp); 8395 8396 /* 8397 * Check to see if client can perform reclaims 8398 */ 8399 rfs4_ss_chkclid(cp); 8400 8401 rfs4_client_rele(cp); 8402 8403 out: 8404 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8405 struct compound_state *, cs, 8406 SETCLIENTID_CONFIRM4 *, res); 8407 } 8408 8409 8410 /*ARGSUSED*/ 8411 void 8412 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8413 struct svc_req *req, struct compound_state *cs) 8414 { 8415 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8416 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8417 rfs4_state_t *sp; 8418 nfsstat4 status; 8419 8420 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8421 CLOSE4args *, args); 8422 8423 if (cs->vp == NULL) { 8424 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8425 goto out; 8426 } 8427 8428 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8429 if (status != NFS4_OK) { 8430 *cs->statusp = resp->status = status; 8431 goto out; 8432 } 8433 8434 /* Ensure specified filehandle matches */ 8435 if (cs->vp != sp->rs_finfo->rf_vp) { 8436 rfs4_state_rele(sp); 8437 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8438 goto out; 8439 } 8440 8441 /* hold off other access to open_owner while we tinker */ 8442 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8443 8444 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8445 case NFS4_CHECK_STATEID_OKAY: 8446 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8447 resop) != NFS4_CHKSEQ_OKAY) { 8448 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8449 goto end; 8450 } 8451 break; 8452 case NFS4_CHECK_STATEID_OLD: 8453 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8454 goto end; 8455 case NFS4_CHECK_STATEID_BAD: 8456 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8457 goto end; 8458 case NFS4_CHECK_STATEID_EXPIRED: 8459 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8460 goto end; 8461 case NFS4_CHECK_STATEID_CLOSED: 8462 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8463 goto end; 8464 case NFS4_CHECK_STATEID_UNCONFIRMED: 8465 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8466 goto end; 8467 case NFS4_CHECK_STATEID_REPLAY: 8468 /* Check the sequence id for the open owner */ 8469 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8470 resop)) { 8471 case NFS4_CHKSEQ_OKAY: 8472 /* 8473 * This is replayed stateid; if seqid matches 8474 * next expected, then client is using wrong seqid. 8475 */ 8476 /* FALL THROUGH */ 8477 case NFS4_CHKSEQ_BAD: 8478 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8479 goto end; 8480 case NFS4_CHKSEQ_REPLAY: 8481 /* 8482 * Note this case is the duplicate case so 8483 * resp->status is already set. 8484 */ 8485 *cs->statusp = resp->status; 8486 rfs4_update_lease(sp->rs_owner->ro_client); 8487 goto end; 8488 } 8489 break; 8490 default: 8491 ASSERT(FALSE); 8492 break; 8493 } 8494 8495 rfs4_dbe_lock(sp->rs_dbe); 8496 8497 /* Update the stateid. */ 8498 next_stateid(&sp->rs_stateid); 8499 resp->open_stateid = sp->rs_stateid.stateid; 8500 8501 rfs4_dbe_unlock(sp->rs_dbe); 8502 8503 rfs4_update_lease(sp->rs_owner->ro_client); 8504 rfs4_update_open_sequence(sp->rs_owner); 8505 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8506 8507 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8508 8509 *cs->statusp = resp->status = status; 8510 8511 end: 8512 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8513 rfs4_state_rele(sp); 8514 out: 8515 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8516 CLOSE4res *, resp); 8517 } 8518 8519 /* 8520 * Manage the counts on the file struct and close all file locks 8521 */ 8522 /*ARGSUSED*/ 8523 void 8524 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8525 bool_t close_of_client) 8526 { 8527 rfs4_file_t *fp = sp->rs_finfo; 8528 rfs4_lo_state_t *lsp; 8529 int fflags = 0; 8530 8531 /* 8532 * If this call is part of the larger closing down of client 8533 * state then it is just easier to release all locks 8534 * associated with this client instead of going through each 8535 * individual file and cleaning locks there. 8536 */ 8537 if (close_of_client) { 8538 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8539 !list_is_empty(&sp->rs_lostatelist) && 8540 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8541 /* Is the PxFS kernel module loaded? */ 8542 if (lm_remove_file_locks != NULL) { 8543 int new_sysid; 8544 8545 /* Encode the cluster nodeid in new sysid */ 8546 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8547 lm_set_nlmid_flk(&new_sysid); 8548 8549 /* 8550 * This PxFS routine removes file locks for a 8551 * client over all nodes of a cluster. 8552 */ 8553 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8554 "lm_remove_file_locks(sysid=0x%x)\n", 8555 new_sysid)); 8556 (*lm_remove_file_locks)(new_sysid); 8557 } else { 8558 struct flock64 flk; 8559 8560 /* Release all locks for this client */ 8561 flk.l_type = F_UNLKSYS; 8562 flk.l_whence = 0; 8563 flk.l_start = 0; 8564 flk.l_len = 0; 8565 flk.l_sysid = 8566 sp->rs_owner->ro_client->rc_sysidt; 8567 flk.l_pid = 0; 8568 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8569 &flk, F_REMOTELOCK | FREAD | FWRITE, 8570 (u_offset_t)0, NULL, CRED(), NULL); 8571 } 8572 8573 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8574 } 8575 } 8576 8577 /* 8578 * Release all locks on this file by this lock owner or at 8579 * least mark the locks as having been released 8580 */ 8581 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8582 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8583 lsp->rls_locks_cleaned = TRUE; 8584 8585 /* Was this already taken care of above? */ 8586 if (!close_of_client && 8587 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8588 (void) cleanlocks(sp->rs_finfo->rf_vp, 8589 lsp->rls_locker->rl_pid, 8590 lsp->rls_locker->rl_client->rc_sysidt); 8591 } 8592 8593 /* 8594 * Release any shrlocks associated with this open state ID. 8595 * This must be done before the rfs4_state gets marked closed. 8596 */ 8597 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8598 (void) rfs4_unshare(sp); 8599 8600 if (sp->rs_open_access) { 8601 rfs4_dbe_lock(fp->rf_dbe); 8602 8603 /* 8604 * Decrement the count for each access and deny bit that this 8605 * state has contributed to the file. 8606 * If the file counts go to zero 8607 * clear the appropriate bit in the appropriate mask. 8608 */ 8609 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8610 fp->rf_access_read--; 8611 fflags |= FREAD; 8612 if (fp->rf_access_read == 0) 8613 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8614 } 8615 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8616 fp->rf_access_write--; 8617 fflags |= FWRITE; 8618 if (fp->rf_access_write == 0) 8619 fp->rf_share_access &= 8620 ~OPEN4_SHARE_ACCESS_WRITE; 8621 } 8622 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8623 fp->rf_deny_read--; 8624 if (fp->rf_deny_read == 0) 8625 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8626 } 8627 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8628 fp->rf_deny_write--; 8629 if (fp->rf_deny_write == 0) 8630 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8631 } 8632 8633 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8634 8635 rfs4_dbe_unlock(fp->rf_dbe); 8636 8637 sp->rs_open_access = 0; 8638 sp->rs_open_deny = 0; 8639 } 8640 } 8641 8642 /* 8643 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8644 */ 8645 static nfsstat4 8646 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8647 { 8648 rfs4_lockowner_t *lo; 8649 rfs4_client_t *cp; 8650 uint32_t len; 8651 8652 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8653 if (lo != NULL) { 8654 cp = lo->rl_client; 8655 if (rfs4_lease_expired(cp)) { 8656 rfs4_lockowner_rele(lo); 8657 rfs4_dbe_hold(cp->rc_dbe); 8658 rfs4_client_close(cp); 8659 return (NFS4ERR_EXPIRED); 8660 } 8661 dp->owner.clientid = lo->rl_owner.clientid; 8662 len = lo->rl_owner.owner_len; 8663 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8664 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8665 dp->owner.owner_len = len; 8666 rfs4_lockowner_rele(lo); 8667 goto finish; 8668 } 8669 8670 /* 8671 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8672 * of the client id contain the boot time for a NFS4 lock. So we 8673 * fabricate and identity by setting clientid to the sysid, and 8674 * the lock owner to the pid. 8675 */ 8676 dp->owner.clientid = flk->l_sysid; 8677 len = sizeof (pid_t); 8678 dp->owner.owner_len = len; 8679 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8680 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8681 finish: 8682 dp->offset = flk->l_start; 8683 dp->length = flk->l_len; 8684 8685 if (flk->l_type == F_RDLCK) 8686 dp->locktype = READ_LT; 8687 else if (flk->l_type == F_WRLCK) 8688 dp->locktype = WRITE_LT; 8689 else 8690 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8691 8692 return (NFS4_OK); 8693 } 8694 8695 /* 8696 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8697 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8698 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8699 * for that (obviously); they are sending the LOCK requests with some delays 8700 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8701 * locking and delay implementation at the client side. 8702 * 8703 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8704 * fast retries on its own (the for loop below) in a hope the lock will be 8705 * available soon. And if not, the client won't need to resend the LOCK 8706 * requests so fast to check the lock availability. This basically saves some 8707 * network traffic and tries to make sure the client gets the lock ASAP. 8708 */ 8709 static int 8710 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8711 { 8712 int error; 8713 struct flock64 flk; 8714 int i; 8715 clock_t delaytime; 8716 int cmd; 8717 int spin_cnt = 0; 8718 8719 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8720 retry: 8721 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8722 8723 for (i = 0; i < rfs4_maxlock_tries; i++) { 8724 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8725 error = VOP_FRLOCK(vp, cmd, 8726 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8727 8728 if (error != EAGAIN && error != EACCES) 8729 break; 8730 8731 if (i < rfs4_maxlock_tries - 1) { 8732 delay(delaytime); 8733 delaytime *= 2; 8734 } 8735 } 8736 8737 if (error == EAGAIN || error == EACCES) { 8738 /* Get the owner of the lock */ 8739 flk = *flock; 8740 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8741 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8742 NULL) == 0) { 8743 /* 8744 * There's a race inherent in the current VOP_FRLOCK 8745 * design where: 8746 * a: "other guy" takes a lock that conflicts with a 8747 * lock we want 8748 * b: we attempt to take our lock (non-blocking) and 8749 * the attempt fails. 8750 * c: "other guy" releases the conflicting lock 8751 * d: we ask what lock conflicts with the lock we want, 8752 * getting F_UNLCK (no lock blocks us) 8753 * 8754 * If we retry the non-blocking lock attempt in this 8755 * case (restart at step 'b') there's some possibility 8756 * that many such attempts might fail. However a test 8757 * designed to actually provoke this race shows that 8758 * the vast majority of cases require no retry, and 8759 * only a few took as many as three retries. Here's 8760 * the test outcome: 8761 * 8762 * number of retries how many times we needed 8763 * that many retries 8764 * 0 79461 8765 * 1 862 8766 * 2 49 8767 * 3 5 8768 * 8769 * Given those empirical results, we arbitrarily limit 8770 * the retry count to ten. 8771 * 8772 * If we actually make to ten retries and give up, 8773 * nothing catastrophic happens, but we're unable to 8774 * return the information about the conflicting lock to 8775 * the NFS client. That's an acceptable trade off vs. 8776 * letting this retry loop run forever. 8777 */ 8778 if (flk.l_type == F_UNLCK) { 8779 if (spin_cnt++ < 10) { 8780 /* No longer locked, retry */ 8781 goto retry; 8782 } 8783 } else { 8784 *flock = flk; 8785 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8786 F_GETLK, &flk); 8787 } 8788 } 8789 } 8790 8791 return (error); 8792 } 8793 8794 /*ARGSUSED*/ 8795 static nfsstat4 8796 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8797 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8798 { 8799 nfsstat4 status; 8800 rfs4_lockowner_t *lo = lsp->rls_locker; 8801 rfs4_state_t *sp = lsp->rls_state; 8802 struct flock64 flock; 8803 int16_t ltype; 8804 int flag; 8805 int error; 8806 sysid_t sysid; 8807 LOCK4res *lres; 8808 vnode_t *vp; 8809 8810 if (rfs4_lease_expired(lo->rl_client)) { 8811 return (NFS4ERR_EXPIRED); 8812 } 8813 8814 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8815 return (status); 8816 8817 /* Check for zero length. To lock to end of file use all ones for V4 */ 8818 if (length == 0) 8819 return (NFS4ERR_INVAL); 8820 else if (length == (length4)(~0)) 8821 length = 0; /* Posix to end of file */ 8822 8823 retry: 8824 rfs4_dbe_lock(sp->rs_dbe); 8825 if (sp->rs_closed == TRUE) { 8826 rfs4_dbe_unlock(sp->rs_dbe); 8827 return (NFS4ERR_OLD_STATEID); 8828 } 8829 8830 if (resop->resop != OP_LOCKU) { 8831 switch (locktype) { 8832 case READ_LT: 8833 case READW_LT: 8834 if ((sp->rs_share_access 8835 & OPEN4_SHARE_ACCESS_READ) == 0) { 8836 rfs4_dbe_unlock(sp->rs_dbe); 8837 8838 return (NFS4ERR_OPENMODE); 8839 } 8840 ltype = F_RDLCK; 8841 break; 8842 case WRITE_LT: 8843 case WRITEW_LT: 8844 if ((sp->rs_share_access 8845 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8846 rfs4_dbe_unlock(sp->rs_dbe); 8847 8848 return (NFS4ERR_OPENMODE); 8849 } 8850 ltype = F_WRLCK; 8851 break; 8852 } 8853 } else 8854 ltype = F_UNLCK; 8855 8856 flock.l_type = ltype; 8857 flock.l_whence = 0; /* SEEK_SET */ 8858 flock.l_start = offset; 8859 flock.l_len = length; 8860 flock.l_sysid = sysid; 8861 flock.l_pid = lsp->rls_locker->rl_pid; 8862 8863 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8864 if (flock.l_len < 0 || flock.l_start < 0) { 8865 rfs4_dbe_unlock(sp->rs_dbe); 8866 return (NFS4ERR_INVAL); 8867 } 8868 8869 /* 8870 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8871 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8872 */ 8873 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8874 8875 vp = sp->rs_finfo->rf_vp; 8876 VN_HOLD(vp); 8877 8878 /* 8879 * We need to unlock sp before we call the underlying filesystem to 8880 * acquire the file lock. 8881 */ 8882 rfs4_dbe_unlock(sp->rs_dbe); 8883 8884 error = setlock(vp, &flock, flag, cred); 8885 8886 /* 8887 * Make sure the file is still open. In a case the file was closed in 8888 * the meantime, clean the lock we acquired using the setlock() call 8889 * above, and return the appropriate error. 8890 */ 8891 rfs4_dbe_lock(sp->rs_dbe); 8892 if (sp->rs_closed == TRUE) { 8893 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 8894 rfs4_dbe_unlock(sp->rs_dbe); 8895 8896 VN_RELE(vp); 8897 8898 return (NFS4ERR_OLD_STATEID); 8899 } 8900 rfs4_dbe_unlock(sp->rs_dbe); 8901 8902 VN_RELE(vp); 8903 8904 if (error == 0) { 8905 rfs4_dbe_lock(lsp->rls_dbe); 8906 next_stateid(&lsp->rls_lockid); 8907 rfs4_dbe_unlock(lsp->rls_dbe); 8908 } 8909 8910 /* 8911 * N.B. We map error values to nfsv4 errors. This is differrent 8912 * than puterrno4 routine. 8913 */ 8914 switch (error) { 8915 case 0: 8916 status = NFS4_OK; 8917 break; 8918 case EAGAIN: 8919 case EACCES: /* Old value */ 8920 /* Can only get here if op is OP_LOCK */ 8921 ASSERT(resop->resop == OP_LOCK); 8922 lres = &resop->nfs_resop4_u.oplock; 8923 status = NFS4ERR_DENIED; 8924 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8925 == NFS4ERR_EXPIRED) 8926 goto retry; 8927 break; 8928 case ENOLCK: 8929 status = NFS4ERR_DELAY; 8930 break; 8931 case EOVERFLOW: 8932 status = NFS4ERR_INVAL; 8933 break; 8934 case EINVAL: 8935 status = NFS4ERR_NOTSUPP; 8936 break; 8937 default: 8938 status = NFS4ERR_SERVERFAULT; 8939 break; 8940 } 8941 8942 return (status); 8943 } 8944 8945 /*ARGSUSED*/ 8946 void 8947 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8948 struct svc_req *req, struct compound_state *cs) 8949 { 8950 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8951 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8952 nfsstat4 status; 8953 stateid4 *stateid; 8954 rfs4_lockowner_t *lo; 8955 rfs4_client_t *cp; 8956 rfs4_state_t *sp = NULL; 8957 rfs4_lo_state_t *lsp = NULL; 8958 bool_t ls_sw_held = FALSE; 8959 bool_t create = TRUE; 8960 bool_t lcreate = TRUE; 8961 bool_t dup_lock = FALSE; 8962 int rc; 8963 8964 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8965 LOCK4args *, args); 8966 8967 if (cs->vp == NULL) { 8968 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8969 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8970 cs, LOCK4res *, resp); 8971 return; 8972 } 8973 8974 if (args->locker.new_lock_owner) { 8975 /* Create a new lockowner for this instance */ 8976 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8977 8978 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8979 8980 stateid = &olo->open_stateid; 8981 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8982 if (status != NFS4_OK) { 8983 NFS4_DEBUG(rfs4_debug, 8984 (CE_NOTE, "Get state failed in lock %d", status)); 8985 *cs->statusp = resp->status = status; 8986 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8987 cs, LOCK4res *, resp); 8988 return; 8989 } 8990 8991 /* Ensure specified filehandle matches */ 8992 if (cs->vp != sp->rs_finfo->rf_vp) { 8993 rfs4_state_rele(sp); 8994 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8995 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8996 cs, LOCK4res *, resp); 8997 return; 8998 } 8999 9000 /* hold off other access to open_owner while we tinker */ 9001 rfs4_sw_enter(&sp->rs_owner->ro_sw); 9002 9003 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 9004 case NFS4_CHECK_STATEID_OLD: 9005 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9006 goto end; 9007 case NFS4_CHECK_STATEID_BAD: 9008 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9009 goto end; 9010 case NFS4_CHECK_STATEID_EXPIRED: 9011 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9012 goto end; 9013 case NFS4_CHECK_STATEID_UNCONFIRMED: 9014 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9015 goto end; 9016 case NFS4_CHECK_STATEID_CLOSED: 9017 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9018 goto end; 9019 case NFS4_CHECK_STATEID_OKAY: 9020 case NFS4_CHECK_STATEID_REPLAY: 9021 switch (rfs4_check_olo_seqid(olo->open_seqid, 9022 sp->rs_owner, resop)) { 9023 case NFS4_CHKSEQ_OKAY: 9024 if (rc == NFS4_CHECK_STATEID_OKAY) 9025 break; 9026 /* 9027 * This is replayed stateid; if seqid 9028 * matches next expected, then client 9029 * is using wrong seqid. 9030 */ 9031 /* FALLTHROUGH */ 9032 case NFS4_CHKSEQ_BAD: 9033 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9034 goto end; 9035 case NFS4_CHKSEQ_REPLAY: 9036 /* This is a duplicate LOCK request */ 9037 dup_lock = TRUE; 9038 9039 /* 9040 * For a duplicate we do not want to 9041 * create a new lockowner as it should 9042 * already exist. 9043 * Turn off the lockowner create flag. 9044 */ 9045 lcreate = FALSE; 9046 } 9047 break; 9048 } 9049 9050 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 9051 if (lo == NULL) { 9052 NFS4_DEBUG(rfs4_debug, 9053 (CE_NOTE, "rfs4_op_lock: no lock owner")); 9054 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 9055 goto end; 9056 } 9057 9058 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 9059 if (lsp == NULL) { 9060 rfs4_update_lease(sp->rs_owner->ro_client); 9061 /* 9062 * Only update theh open_seqid if this is not 9063 * a duplicate request 9064 */ 9065 if (dup_lock == FALSE) { 9066 rfs4_update_open_sequence(sp->rs_owner); 9067 } 9068 9069 NFS4_DEBUG(rfs4_debug, 9070 (CE_NOTE, "rfs4_op_lock: no state")); 9071 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 9072 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9073 rfs4_lockowner_rele(lo); 9074 goto end; 9075 } 9076 9077 /* 9078 * This is the new_lock_owner branch and the client is 9079 * supposed to be associating a new lock_owner with 9080 * the open file at this point. If we find that a 9081 * lock_owner/state association already exists and a 9082 * successful LOCK request was returned to the client, 9083 * an error is returned to the client since this is 9084 * not appropriate. The client should be using the 9085 * existing lock_owner branch. 9086 */ 9087 if (dup_lock == FALSE && create == FALSE) { 9088 if (lsp->rls_lock_completed == TRUE) { 9089 *cs->statusp = 9090 resp->status = NFS4ERR_BAD_SEQID; 9091 rfs4_lockowner_rele(lo); 9092 goto end; 9093 } 9094 } 9095 9096 rfs4_update_lease(sp->rs_owner->ro_client); 9097 9098 /* 9099 * Only update theh open_seqid if this is not 9100 * a duplicate request 9101 */ 9102 if (dup_lock == FALSE) { 9103 rfs4_update_open_sequence(sp->rs_owner); 9104 } 9105 9106 /* 9107 * If this is a duplicate lock request, just copy the 9108 * previously saved reply and return. 9109 */ 9110 if (dup_lock == TRUE) { 9111 /* verify that lock_seqid's match */ 9112 if (lsp->rls_seqid != olo->lock_seqid) { 9113 NFS4_DEBUG(rfs4_debug, 9114 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9115 "lsp->seqid=%d old->seqid=%d", 9116 lsp->rls_seqid, olo->lock_seqid)); 9117 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9118 } else { 9119 rfs4_copy_reply(resop, &lsp->rls_reply); 9120 /* 9121 * Make sure to copy the just 9122 * retrieved reply status into the 9123 * overall compound status 9124 */ 9125 *cs->statusp = resp->status; 9126 } 9127 rfs4_lockowner_rele(lo); 9128 goto end; 9129 } 9130 9131 rfs4_dbe_lock(lsp->rls_dbe); 9132 9133 /* Make sure to update the lock sequence id */ 9134 lsp->rls_seqid = olo->lock_seqid; 9135 9136 NFS4_DEBUG(rfs4_debug, 9137 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9138 9139 /* 9140 * This is used to signify the newly created lockowner 9141 * stateid and its sequence number. The checks for 9142 * sequence number and increment don't occur on the 9143 * very first lock request for a lockowner. 9144 */ 9145 lsp->rls_skip_seqid_check = TRUE; 9146 9147 /* hold off other access to lsp while we tinker */ 9148 rfs4_sw_enter(&lsp->rls_sw); 9149 ls_sw_held = TRUE; 9150 9151 rfs4_dbe_unlock(lsp->rls_dbe); 9152 9153 rfs4_lockowner_rele(lo); 9154 } else { 9155 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9156 /* get lsp and hold the lock on the underlying file struct */ 9157 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9158 != NFS4_OK) { 9159 *cs->statusp = resp->status = status; 9160 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9161 cs, LOCK4res *, resp); 9162 return; 9163 } 9164 create = FALSE; /* We didn't create lsp */ 9165 9166 /* Ensure specified filehandle matches */ 9167 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9168 rfs4_lo_state_rele(lsp, TRUE); 9169 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9170 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9171 cs, LOCK4res *, resp); 9172 return; 9173 } 9174 9175 /* hold off other access to lsp while we tinker */ 9176 rfs4_sw_enter(&lsp->rls_sw); 9177 ls_sw_held = TRUE; 9178 9179 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9180 /* 9181 * The stateid looks like it was okay (expected to be 9182 * the next one) 9183 */ 9184 case NFS4_CHECK_STATEID_OKAY: 9185 /* 9186 * The sequence id is now checked. Determine 9187 * if this is a replay or if it is in the 9188 * expected (next) sequence. In the case of a 9189 * replay, there are two replay conditions 9190 * that may occur. The first is the normal 9191 * condition where a LOCK is done with a 9192 * NFS4_OK response and the stateid is 9193 * updated. That case is handled below when 9194 * the stateid is identified as a REPLAY. The 9195 * second is the case where an error is 9196 * returned, like NFS4ERR_DENIED, and the 9197 * sequence number is updated but the stateid 9198 * is not updated. This second case is dealt 9199 * with here. So it may seem odd that the 9200 * stateid is okay but the sequence id is a 9201 * replay but it is okay. 9202 */ 9203 switch (rfs4_check_lock_seqid( 9204 args->locker.locker4_u.lock_owner.lock_seqid, 9205 lsp, resop)) { 9206 case NFS4_CHKSEQ_REPLAY: 9207 if (resp->status != NFS4_OK) { 9208 /* 9209 * Here is our replay and need 9210 * to verify that the last 9211 * response was an error. 9212 */ 9213 *cs->statusp = resp->status; 9214 goto end; 9215 } 9216 /* 9217 * This is done since the sequence id 9218 * looked like a replay but it didn't 9219 * pass our check so a BAD_SEQID is 9220 * returned as a result. 9221 */ 9222 /*FALLTHROUGH*/ 9223 case NFS4_CHKSEQ_BAD: 9224 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9225 goto end; 9226 case NFS4_CHKSEQ_OKAY: 9227 /* Everything looks okay move ahead */ 9228 break; 9229 } 9230 break; 9231 case NFS4_CHECK_STATEID_OLD: 9232 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9233 goto end; 9234 case NFS4_CHECK_STATEID_BAD: 9235 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9236 goto end; 9237 case NFS4_CHECK_STATEID_EXPIRED: 9238 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9239 goto end; 9240 case NFS4_CHECK_STATEID_CLOSED: 9241 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9242 goto end; 9243 case NFS4_CHECK_STATEID_REPLAY: 9244 switch (rfs4_check_lock_seqid( 9245 args->locker.locker4_u.lock_owner.lock_seqid, 9246 lsp, resop)) { 9247 case NFS4_CHKSEQ_OKAY: 9248 /* 9249 * This is a replayed stateid; if 9250 * seqid matches the next expected, 9251 * then client is using wrong seqid. 9252 */ 9253 case NFS4_CHKSEQ_BAD: 9254 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9255 goto end; 9256 case NFS4_CHKSEQ_REPLAY: 9257 rfs4_update_lease(lsp->rls_locker->rl_client); 9258 *cs->statusp = status = resp->status; 9259 goto end; 9260 } 9261 break; 9262 default: 9263 ASSERT(FALSE); 9264 break; 9265 } 9266 9267 rfs4_update_lock_sequence(lsp); 9268 rfs4_update_lease(lsp->rls_locker->rl_client); 9269 } 9270 9271 /* 9272 * NFS4 only allows locking on regular files, so 9273 * verify type of object. 9274 */ 9275 if (cs->vp->v_type != VREG) { 9276 if (cs->vp->v_type == VDIR) 9277 status = NFS4ERR_ISDIR; 9278 else 9279 status = NFS4ERR_INVAL; 9280 goto out; 9281 } 9282 9283 cp = lsp->rls_state->rs_owner->ro_client; 9284 9285 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9286 status = NFS4ERR_GRACE; 9287 goto out; 9288 } 9289 9290 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9291 status = NFS4ERR_NO_GRACE; 9292 goto out; 9293 } 9294 9295 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9296 status = NFS4ERR_NO_GRACE; 9297 goto out; 9298 } 9299 9300 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9301 cs->deleg = TRUE; 9302 9303 status = rfs4_do_lock(lsp, args->locktype, 9304 args->offset, args->length, cs->cr, resop); 9305 9306 out: 9307 lsp->rls_skip_seqid_check = FALSE; 9308 9309 *cs->statusp = resp->status = status; 9310 9311 if (status == NFS4_OK) { 9312 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9313 lsp->rls_lock_completed = TRUE; 9314 } 9315 /* 9316 * Only update the "OPEN" response here if this was a new 9317 * lock_owner 9318 */ 9319 if (sp) 9320 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9321 9322 rfs4_update_lock_resp(lsp, resop); 9323 9324 end: 9325 if (lsp) { 9326 if (ls_sw_held) 9327 rfs4_sw_exit(&lsp->rls_sw); 9328 /* 9329 * If an sp obtained, then the lsp does not represent 9330 * a lock on the file struct. 9331 */ 9332 if (sp != NULL) 9333 rfs4_lo_state_rele(lsp, FALSE); 9334 else 9335 rfs4_lo_state_rele(lsp, TRUE); 9336 } 9337 if (sp) { 9338 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9339 rfs4_state_rele(sp); 9340 } 9341 9342 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9343 LOCK4res *, resp); 9344 } 9345 9346 /* free function for LOCK/LOCKT */ 9347 static void 9348 lock_denied_free(nfs_resop4 *resop) 9349 { 9350 LOCK4denied *dp = NULL; 9351 9352 switch (resop->resop) { 9353 case OP_LOCK: 9354 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9355 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9356 break; 9357 case OP_LOCKT: 9358 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9359 dp = &resop->nfs_resop4_u.oplockt.denied; 9360 break; 9361 default: 9362 break; 9363 } 9364 9365 if (dp) 9366 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9367 } 9368 9369 /*ARGSUSED*/ 9370 void 9371 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9372 struct svc_req *req, struct compound_state *cs) 9373 { 9374 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9375 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9376 nfsstat4 status; 9377 stateid4 *stateid = &args->lock_stateid; 9378 rfs4_lo_state_t *lsp; 9379 9380 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9381 LOCKU4args *, args); 9382 9383 if (cs->vp == NULL) { 9384 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9385 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9386 LOCKU4res *, resp); 9387 return; 9388 } 9389 9390 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9391 *cs->statusp = resp->status = status; 9392 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9393 LOCKU4res *, resp); 9394 return; 9395 } 9396 9397 /* Ensure specified filehandle matches */ 9398 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9399 rfs4_lo_state_rele(lsp, TRUE); 9400 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9401 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9402 LOCKU4res *, resp); 9403 return; 9404 } 9405 9406 /* hold off other access to lsp while we tinker */ 9407 rfs4_sw_enter(&lsp->rls_sw); 9408 9409 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9410 case NFS4_CHECK_STATEID_OKAY: 9411 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9412 != NFS4_CHKSEQ_OKAY) { 9413 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9414 goto end; 9415 } 9416 break; 9417 case NFS4_CHECK_STATEID_OLD: 9418 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9419 goto end; 9420 case NFS4_CHECK_STATEID_BAD: 9421 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9422 goto end; 9423 case NFS4_CHECK_STATEID_EXPIRED: 9424 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9425 goto end; 9426 case NFS4_CHECK_STATEID_CLOSED: 9427 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9428 goto end; 9429 case NFS4_CHECK_STATEID_REPLAY: 9430 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9431 case NFS4_CHKSEQ_OKAY: 9432 /* 9433 * This is a replayed stateid; if 9434 * seqid matches the next expected, 9435 * then client is using wrong seqid. 9436 */ 9437 case NFS4_CHKSEQ_BAD: 9438 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9439 goto end; 9440 case NFS4_CHKSEQ_REPLAY: 9441 rfs4_update_lease(lsp->rls_locker->rl_client); 9442 *cs->statusp = status = resp->status; 9443 goto end; 9444 } 9445 break; 9446 default: 9447 ASSERT(FALSE); 9448 break; 9449 } 9450 9451 rfs4_update_lock_sequence(lsp); 9452 rfs4_update_lease(lsp->rls_locker->rl_client); 9453 9454 /* 9455 * NFS4 only allows locking on regular files, so 9456 * verify type of object. 9457 */ 9458 if (cs->vp->v_type != VREG) { 9459 if (cs->vp->v_type == VDIR) 9460 status = NFS4ERR_ISDIR; 9461 else 9462 status = NFS4ERR_INVAL; 9463 goto out; 9464 } 9465 9466 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9467 status = NFS4ERR_GRACE; 9468 goto out; 9469 } 9470 9471 status = rfs4_do_lock(lsp, args->locktype, 9472 args->offset, args->length, cs->cr, resop); 9473 9474 out: 9475 *cs->statusp = resp->status = status; 9476 9477 if (status == NFS4_OK) 9478 resp->lock_stateid = lsp->rls_lockid.stateid; 9479 9480 rfs4_update_lock_resp(lsp, resop); 9481 9482 end: 9483 rfs4_sw_exit(&lsp->rls_sw); 9484 rfs4_lo_state_rele(lsp, TRUE); 9485 9486 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9487 LOCKU4res *, resp); 9488 } 9489 9490 /* 9491 * LOCKT is a best effort routine, the client can not be guaranteed that 9492 * the status return is still in effect by the time the reply is received. 9493 * They are numerous race conditions in this routine, but we are not required 9494 * and can not be accurate. 9495 */ 9496 /*ARGSUSED*/ 9497 void 9498 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9499 struct svc_req *req, struct compound_state *cs) 9500 { 9501 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9502 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9503 rfs4_lockowner_t *lo; 9504 rfs4_client_t *cp; 9505 bool_t create = FALSE; 9506 struct flock64 flk; 9507 int error; 9508 int flag = FREAD | FWRITE; 9509 int ltype; 9510 length4 posix_length; 9511 sysid_t sysid; 9512 pid_t pid; 9513 9514 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9515 LOCKT4args *, args); 9516 9517 if (cs->vp == NULL) { 9518 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9519 goto out; 9520 } 9521 9522 /* 9523 * NFS4 only allows locking on regular files, so 9524 * verify type of object. 9525 */ 9526 if (cs->vp->v_type != VREG) { 9527 if (cs->vp->v_type == VDIR) 9528 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9529 else 9530 *cs->statusp = resp->status = NFS4ERR_INVAL; 9531 goto out; 9532 } 9533 9534 /* 9535 * Check out the clientid to ensure the server knows about it 9536 * so that we correctly inform the client of a server reboot. 9537 */ 9538 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9539 == NULL) { 9540 *cs->statusp = resp->status = 9541 rfs4_check_clientid(&args->owner.clientid, 0); 9542 goto out; 9543 } 9544 if (rfs4_lease_expired(cp)) { 9545 rfs4_client_close(cp); 9546 /* 9547 * Protocol doesn't allow returning NFS4ERR_STALE as 9548 * other operations do on this check so STALE_CLIENTID 9549 * is returned instead 9550 */ 9551 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9552 goto out; 9553 } 9554 9555 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9556 *cs->statusp = resp->status = NFS4ERR_GRACE; 9557 rfs4_client_rele(cp); 9558 goto out; 9559 } 9560 rfs4_client_rele(cp); 9561 9562 resp->status = NFS4_OK; 9563 9564 switch (args->locktype) { 9565 case READ_LT: 9566 case READW_LT: 9567 ltype = F_RDLCK; 9568 break; 9569 case WRITE_LT: 9570 case WRITEW_LT: 9571 ltype = F_WRLCK; 9572 break; 9573 } 9574 9575 posix_length = args->length; 9576 /* Check for zero length. To lock to end of file use all ones for V4 */ 9577 if (posix_length == 0) { 9578 *cs->statusp = resp->status = NFS4ERR_INVAL; 9579 goto out; 9580 } else if (posix_length == (length4)(~0)) { 9581 posix_length = 0; /* Posix to end of file */ 9582 } 9583 9584 /* Find or create a lockowner */ 9585 lo = rfs4_findlockowner(&args->owner, &create); 9586 9587 if (lo) { 9588 pid = lo->rl_pid; 9589 if ((resp->status = 9590 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9591 goto err; 9592 } else { 9593 pid = 0; 9594 sysid = lockt_sysid; 9595 } 9596 retry: 9597 flk.l_type = ltype; 9598 flk.l_whence = 0; /* SEEK_SET */ 9599 flk.l_start = args->offset; 9600 flk.l_len = posix_length; 9601 flk.l_sysid = sysid; 9602 flk.l_pid = pid; 9603 flag |= F_REMOTELOCK; 9604 9605 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9606 9607 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9608 if (flk.l_len < 0 || flk.l_start < 0) { 9609 resp->status = NFS4ERR_INVAL; 9610 goto err; 9611 } 9612 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9613 NULL, cs->cr, NULL); 9614 9615 /* 9616 * N.B. We map error values to nfsv4 errors. This is differrent 9617 * than puterrno4 routine. 9618 */ 9619 switch (error) { 9620 case 0: 9621 if (flk.l_type == F_UNLCK) 9622 resp->status = NFS4_OK; 9623 else { 9624 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9625 goto retry; 9626 resp->status = NFS4ERR_DENIED; 9627 } 9628 break; 9629 case EOVERFLOW: 9630 resp->status = NFS4ERR_INVAL; 9631 break; 9632 case EINVAL: 9633 resp->status = NFS4ERR_NOTSUPP; 9634 break; 9635 default: 9636 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9637 error); 9638 resp->status = NFS4ERR_SERVERFAULT; 9639 break; 9640 } 9641 9642 err: 9643 if (lo) 9644 rfs4_lockowner_rele(lo); 9645 *cs->statusp = resp->status; 9646 out: 9647 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9648 LOCKT4res *, resp); 9649 } 9650 9651 int 9652 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9653 { 9654 int err; 9655 int cmd; 9656 vnode_t *vp; 9657 struct shrlock shr; 9658 struct shr_locowner shr_loco; 9659 int fflags = 0; 9660 9661 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9662 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9663 9664 if (sp->rs_closed) 9665 return (NFS4ERR_OLD_STATEID); 9666 9667 vp = sp->rs_finfo->rf_vp; 9668 ASSERT(vp); 9669 9670 shr.s_access = shr.s_deny = 0; 9671 9672 if (access & OPEN4_SHARE_ACCESS_READ) { 9673 fflags |= FREAD; 9674 shr.s_access |= F_RDACC; 9675 } 9676 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9677 fflags |= FWRITE; 9678 shr.s_access |= F_WRACC; 9679 } 9680 ASSERT(shr.s_access); 9681 9682 if (deny & OPEN4_SHARE_DENY_READ) 9683 shr.s_deny |= F_RDDNY; 9684 if (deny & OPEN4_SHARE_DENY_WRITE) 9685 shr.s_deny |= F_WRDNY; 9686 9687 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9688 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9689 shr_loco.sl_pid = shr.s_pid; 9690 shr_loco.sl_id = shr.s_sysid; 9691 shr.s_owner = (caddr_t)&shr_loco; 9692 shr.s_own_len = sizeof (shr_loco); 9693 9694 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9695 9696 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9697 if (err != 0) { 9698 if (err == EAGAIN) 9699 err = NFS4ERR_SHARE_DENIED; 9700 else 9701 err = puterrno4(err); 9702 return (err); 9703 } 9704 9705 sp->rs_share_access |= access; 9706 sp->rs_share_deny |= deny; 9707 9708 return (0); 9709 } 9710 9711 int 9712 rfs4_unshare(rfs4_state_t *sp) 9713 { 9714 int err; 9715 struct shrlock shr; 9716 struct shr_locowner shr_loco; 9717 9718 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9719 9720 if (sp->rs_closed || sp->rs_share_access == 0) 9721 return (0); 9722 9723 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9724 ASSERT(sp->rs_finfo->rf_vp); 9725 9726 shr.s_access = shr.s_deny = 0; 9727 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9728 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9729 shr_loco.sl_pid = shr.s_pid; 9730 shr_loco.sl_id = shr.s_sysid; 9731 shr.s_owner = (caddr_t)&shr_loco; 9732 shr.s_own_len = sizeof (shr_loco); 9733 9734 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9735 NULL); 9736 if (err != 0) { 9737 err = puterrno4(err); 9738 return (err); 9739 } 9740 9741 sp->rs_share_access = 0; 9742 sp->rs_share_deny = 0; 9743 9744 return (0); 9745 9746 } 9747 9748 static int 9749 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9750 { 9751 struct clist *wcl; 9752 count4 count = rok->data_len; 9753 int wlist_len; 9754 9755 wcl = args->wlist; 9756 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9757 return (FALSE); 9758 } 9759 wcl = args->wlist; 9760 rok->wlist_len = wlist_len; 9761 rok->wlist = wcl; 9762 return (TRUE); 9763 } 9764 9765 /* tunable to disable server referrals */ 9766 int rfs4_no_referrals = 0; 9767 9768 /* 9769 * Find an NFS record in reparse point data. 9770 * Returns 0 for success and <0 or an errno value on failure. 9771 */ 9772 int 9773 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9774 { 9775 int err; 9776 char *stype, *val; 9777 nvlist_t *nvl; 9778 nvpair_t *curr; 9779 9780 if ((nvl = reparse_init()) == NULL) 9781 return (-1); 9782 9783 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9784 reparse_free(nvl); 9785 return (err); 9786 } 9787 9788 curr = NULL; 9789 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9790 if ((stype = nvpair_name(curr)) == NULL) { 9791 reparse_free(nvl); 9792 return (-2); 9793 } 9794 if (strncasecmp(stype, "NFS", 3) == 0) 9795 break; 9796 } 9797 9798 if ((curr == NULL) || 9799 (nvpair_value_string(curr, &val))) { 9800 reparse_free(nvl); 9801 return (-3); 9802 } 9803 *nvlp = nvl; 9804 *svcp = stype; 9805 *datap = val; 9806 return (0); 9807 } 9808 9809 int 9810 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9811 { 9812 nvlist_t *nvl; 9813 char *s, *d; 9814 9815 if (rfs4_no_referrals != 0) 9816 return (B_FALSE); 9817 9818 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9819 return (B_FALSE); 9820 9821 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9822 return (B_FALSE); 9823 9824 reparse_free(nvl); 9825 9826 return (B_TRUE); 9827 } 9828 9829 /* 9830 * There is a user-level copy of this routine in ref_subr.c. 9831 * Changes should be kept in sync. 9832 */ 9833 static int 9834 nfs4_create_components(char *path, component4 *comp4) 9835 { 9836 int slen, plen, ncomp; 9837 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9838 9839 if (path == NULL) 9840 return (0); 9841 9842 plen = strlen(path) + 1; /* include the terminator */ 9843 ori_path = path; 9844 ncomp = 0; 9845 9846 /* count number of components in the path */ 9847 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9848 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9849 if ((slen = nxtc - path) == 0) { 9850 path = nxtc + 1; 9851 continue; 9852 } 9853 9854 if (comp4 != NULL) { 9855 bcopy(path, buf, slen); 9856 buf[slen] = '\0'; 9857 (void) str_to_utf8(buf, &comp4[ncomp]); 9858 } 9859 9860 ncomp++; /* 1 valid component */ 9861 path = nxtc + 1; 9862 } 9863 if (*nxtc == '\0' || *nxtc == '\n') 9864 break; 9865 } 9866 9867 return (ncomp); 9868 } 9869 9870 /* 9871 * There is a user-level copy of this routine in ref_subr.c. 9872 * Changes should be kept in sync. 9873 */ 9874 static int 9875 make_pathname4(char *path, pathname4 *pathname) 9876 { 9877 int ncomp; 9878 component4 *comp4; 9879 9880 if (pathname == NULL) 9881 return (0); 9882 9883 if (path == NULL) { 9884 pathname->pathname4_val = NULL; 9885 pathname->pathname4_len = 0; 9886 return (0); 9887 } 9888 9889 /* count number of components to alloc buffer */ 9890 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9891 pathname->pathname4_val = NULL; 9892 pathname->pathname4_len = 0; 9893 return (0); 9894 } 9895 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9896 9897 /* copy components into allocated buffer */ 9898 ncomp = nfs4_create_components(path, comp4); 9899 9900 pathname->pathname4_val = comp4; 9901 pathname->pathname4_len = ncomp; 9902 9903 return (ncomp); 9904 } 9905 9906 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9907 9908 fs_locations4 * 9909 fetch_referral(vnode_t *vp, cred_t *cr) 9910 { 9911 nvlist_t *nvl; 9912 char *stype, *sdata; 9913 fs_locations4 *result; 9914 char buf[1024]; 9915 size_t bufsize; 9916 XDR xdr; 9917 int err; 9918 9919 /* 9920 * Check attrs to ensure it's a reparse point 9921 */ 9922 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9923 return (NULL); 9924 9925 /* 9926 * Look for an NFS record and get the type and data 9927 */ 9928 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9929 return (NULL); 9930 9931 /* 9932 * With the type and data, upcall to get the referral 9933 */ 9934 bufsize = sizeof (buf); 9935 bzero(buf, sizeof (buf)); 9936 err = reparse_kderef((const char *)stype, (const char *)sdata, 9937 buf, &bufsize); 9938 reparse_free(nvl); 9939 9940 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9941 char *, stype, char *, sdata, char *, buf, int, err); 9942 if (err) { 9943 cmn_err(CE_NOTE, 9944 "reparsed daemon not running: unable to get referral (%d)", 9945 err); 9946 return (NULL); 9947 } 9948 9949 /* 9950 * We get an XDR'ed record back from the kderef call 9951 */ 9952 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9953 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9954 err = xdr_fs_locations4(&xdr, result); 9955 XDR_DESTROY(&xdr); 9956 if (err != TRUE) { 9957 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9958 int, err); 9959 return (NULL); 9960 } 9961 9962 /* 9963 * Look at path to recover fs_root, ignoring the leading '/' 9964 */ 9965 (void) make_pathname4(vp->v_path, &result->fs_root); 9966 9967 return (result); 9968 } 9969 9970 char * 9971 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9972 { 9973 fs_locations4 *fsl; 9974 fs_location4 *fs; 9975 char *server, *path, *symbuf; 9976 static char *prefix = "/net/"; 9977 int i, size, npaths; 9978 uint_t len; 9979 9980 /* Get the referral */ 9981 if ((fsl = fetch_referral(vp, cr)) == NULL) 9982 return (NULL); 9983 9984 /* Deal with only the first location and first server */ 9985 fs = &fsl->locations_val[0]; 9986 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9987 if (server == NULL) { 9988 rfs4_free_fs_locations4(fsl); 9989 kmem_free(fsl, sizeof (fs_locations4)); 9990 return (NULL); 9991 } 9992 9993 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9994 size = strlen(prefix) + len; 9995 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9996 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9997 9998 /* Allocate the symlink buffer and fill it */ 9999 symbuf = kmem_zalloc(size, KM_SLEEP); 10000 (void) strcat(symbuf, prefix); 10001 (void) strcat(symbuf, server); 10002 kmem_free(server, len); 10003 10004 npaths = 0; 10005 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 10006 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 10007 if (path == NULL) 10008 continue; 10009 (void) strcat(symbuf, "/"); 10010 (void) strcat(symbuf, path); 10011 npaths++; 10012 kmem_free(path, len); 10013 } 10014 10015 rfs4_free_fs_locations4(fsl); 10016 kmem_free(fsl, sizeof (fs_locations4)); 10017 10018 if (strsz != NULL) 10019 *strsz = size; 10020 return (symbuf); 10021 } 10022 10023 /* 10024 * Check to see if we have a downrev Solaris client, so that we 10025 * can send it a symlink instead of a referral. 10026 */ 10027 int 10028 client_is_downrev(struct svc_req *req) 10029 { 10030 struct sockaddr *ca; 10031 rfs4_clntip_t *ci; 10032 bool_t create = FALSE; 10033 int is_downrev; 10034 10035 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 10036 ASSERT(ca); 10037 ci = rfs4_find_clntip(ca, &create); 10038 if (ci == NULL) 10039 return (0); 10040 is_downrev = ci->ri_no_referrals; 10041 rfs4_dbe_rele(ci->ri_dbe); 10042 return (is_downrev); 10043 } 10044