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 2014 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #ifndef _NFS_EXPORT_H 31 #define _NFS_EXPORT_H 32 33 #include <nfs/nfs_sec.h> 34 #include <nfs/auth.h> 35 #include <sys/vnode.h> 36 #include <nfs/nfs4.h> 37 #include <sys/kiconv.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * nfs pseudo flavor number is owned by IANA. Need to make sure the 45 * Solaris specific NFS_FLAVOR_NOMAP number will not overlap with any 46 * new IANA defined pseudo flavor numbers. The chance for the overlap 47 * is very small since the growth of new flavor numbers is expected 48 * to be limited. 49 */ 50 #define NFS_FLAVOR_NOMAP 999999 /* no nfs flavor mapping */ 51 52 /* 53 * As duplicate flavors can be passed into exportfs in the arguments, we 54 * allocate a cleaned up array with non duplicate flavors on the stack. 55 * So we need to know how much to allocate. 56 */ 57 #define MAX_FLAVORS 6 /* none, sys, dh, krb5, krb5i krb5p */ 58 59 /* 60 * Note: exported_lock is currently used to ensure the integrity of 61 * the secinfo fields. 62 */ 63 struct secinfo { 64 seconfig_t s_secinfo; /* /etc/nfssec.conf entry */ 65 unsigned int s_flags; /* flags (see below) */ 66 int32_t s_refcnt; /* reference count for tracking */ 67 /* how many children (self included) */ 68 /* use this flavor. */ 69 int s_window; /* window */ 70 uint_t s_rootid; /* UID to use for authorized roots */ 71 int s_rootcnt; /* count of root names */ 72 caddr_t *s_rootnames; /* array of root names */ 73 /* they are strings for AUTH_DES and */ 74 /* rpc_gss_principal_t for RPCSEC_GSS */ 75 }; 76 77 #ifdef _SYSCALL32 78 struct secinfo32 { 79 seconfig32_t s_secinfo; /* /etc/nfssec.conf entry */ 80 uint32_t s_flags; /* flags (see below) */ 81 int32_t s_refcnt; /* reference count for tracking */ 82 /* how many children (self included) */ 83 /* use this flavor. */ 84 int32_t s_window; /* window */ 85 uint32_t s_rootid; /* UID to use for authorized roots */ 86 int32_t s_rootcnt; /* count of root names */ 87 caddr32_t s_rootnames; /* array of root names */ 88 /* they are strings for AUTH_DES and */ 89 /* rpc_gss_principal_t for RPCSEC_GSS */ 90 }; 91 #endif /* _SYSCALL32 */ 92 93 /* 94 * security negotiation related 95 */ 96 97 #define SEC_QUERY 0x01 /* query sec modes */ 98 99 struct sec_ol { 100 int sec_flags; /* security nego flags */ 101 uint_t sec_index; /* index into sec flavor array */ 102 }; 103 104 /* 105 * Per-mode flags (secinfo.s_flags) 106 */ 107 #define M_RO 0x01 /* exported ro to all */ 108 #define M_ROL 0x02 /* exported ro to all listed */ 109 #define M_RW 0x04 /* exported rw to all */ 110 #define M_RWL 0x08 /* exported ro to all listed */ 111 #define M_ROOT 0x10 /* root list is defined */ 112 #define M_4SEC_EXPORTED 0x20 /* this is an explicitly shared flavor */ 113 #define M_NONE 0x40 /* none list is defined */ 114 #define M_MAP 0x80 /* uidmap and/or gidmap is defined */ 115 116 /* invalid secinfo reference count */ 117 #define SEC_REF_INVALID(p) ((p)->s_refcnt < 1) 118 119 /* last secinfo reference */ 120 #define SEC_REF_LAST(p) ((p)->s_refcnt == 1) 121 122 /* sec flavor explicitly shared for the exported node */ 123 #define SEC_REF_EXPORTED(p) ((p)->s_flags & M_4SEC_EXPORTED) 124 125 /* the only reference count left is for referring itself */ 126 #define SEC_REF_SELF(p) (SEC_REF_LAST(p) && SEC_REF_EXPORTED(p)) 127 128 /* 129 * The export information passed to exportfs() (Version 2) 130 */ 131 #define EX_CURRENT_VERSION 2 /* current version of exportdata struct */ 132 133 struct exportdata { 134 int ex_version; /* structure version */ 135 char *ex_path; /* exported path */ 136 size_t ex_pathlen; /* path length */ 137 int ex_flags; /* flags */ 138 unsigned int ex_anon; /* uid for unauthenticated requests */ 139 int ex_seccnt; /* count of security modes */ 140 struct secinfo *ex_secinfo; /* security mode info */ 141 char *ex_index; /* index file for public filesystem */ 142 char *ex_log_buffer; /* path to logging buffer file */ 143 size_t ex_log_bufferlen; /* buffer file path len */ 144 char *ex_tag; /* tag used to identify log config */ 145 size_t ex_taglen; /* tag length */ 146 }; 147 148 #ifdef _SYSCALL32 149 struct exportdata32 { 150 int32_t ex_version; /* structure version */ 151 caddr32_t ex_path; /* exported path */ 152 int32_t ex_pathlen; /* path length */ 153 int32_t ex_flags; /* flags */ 154 uint32_t ex_anon; /* uid for unauthenticated requests */ 155 int32_t ex_seccnt; /* count of security modes */ 156 caddr32_t ex_secinfo; /* security mode info */ 157 caddr32_t ex_index; /* index file for public filesystem */ 158 caddr32_t ex_log_buffer; /* path to logging buffer file */ 159 int32_t ex_log_bufferlen; /* buffer file path len */ 160 caddr32_t ex_tag; /* tag used to identify log config */ 161 int32_t ex_taglen; /* tag length */ 162 }; 163 #endif /* _SYSCALL32 */ 164 165 /* 166 * exported vfs flags. 167 */ 168 169 #define EX_NOSUID 0x01 /* exported with unsetable set[ug]ids */ 170 #define EX_ACLOK 0x02 /* exported with maximal access if acl exists */ 171 #define EX_PUBLIC 0x04 /* exported with public filehandle */ 172 #define EX_NOSUB 0x08 /* no nfs_getfh or MCL below export point */ 173 #define EX_INDEX 0x10 /* exported with index file specified */ 174 #define EX_LOG 0x20 /* logging enabled */ 175 #define EX_LOG_ALLOPS 0x40 /* logging of all RPC operations enabled */ 176 /* by default only operations which affect */ 177 /* transaction logging are enabled */ 178 #define EX_PSEUDO 0x80 /* pseudo filesystem export */ 179 #ifdef VOLATILE_FH_TEST 180 #define EX_VOLFH 0x100 /* XXX nfsv4 fh may expire anytime */ 181 #define EX_VOLRNM 0x200 /* XXX nfsv4 fh expire at rename */ 182 #define EX_VOLMIG 0x400 /* XXX nfsv4 fh expire at migration */ 183 #define EX_NOEXPOPEN 0x800 /* XXX nfsv4 fh no expire with open */ 184 #endif /* VOLATILE_FH_TEST */ 185 186 #define EX_CHARMAP 0x1000 /* NFS may need a character set conversion */ 187 #define EX_NOACLFAB 0x2000 /* If set, NFSv2 and v3 servers doesn't */ 188 /* fabricate ACL for VOP_GETSECATTR OTW call */ 189 190 #ifdef _KERNEL 191 192 #define RPC_IDEMPOTENT 0x1 /* idempotent or not */ 193 /* 194 * Be very careful about which NFS procedures get the RPC_ALLOWANON bit. 195 * Right now, if this bit is on, we ignore the results of per NFS request 196 * access control. 197 */ 198 #define RPC_ALLOWANON 0x2 /* allow anonymous access */ 199 #define RPC_MAPRESP 0x4 /* use mapped response buffer */ 200 #define RPC_AVOIDWORK 0x8 /* do work avoidance for dups */ 201 #define RPC_PUBLICFH_OK 0x10 /* allow use of public filehandle */ 202 203 /* 204 * RPC_ALL is an or of all above bits to be used with "don't care" 205 * nfsv4 ops. The flags of an nfsv4 request is the bit-AND of the 206 * per-op flags. 207 */ 208 #define RPC_ALL (RPC_IDEMPOTENT|RPC_ALLOWANON|RPC_AVOIDWORK|RPC_PUBLICFH_OK) 209 210 211 #ifdef VOLATILE_FH_TEST 212 struct ex_vol_rename { 213 nfs_fh4_fmt_t vrn_fh_fmt; 214 struct ex_vol_rename *vrn_next; 215 }; 216 #endif /* VOLATILE_FH_TEST */ 217 218 /* 219 * An auth cache entry can exist in 4 active states, with the inactive 220 * state being indicated by no entry in the cache. 221 * 222 * A FRESH entry is one which is either new or has been refreshed at 223 * least once. 224 * 225 * A STALE entry is one which has been detected to be too old. The 226 * transistion from FRESH to STALE prevents multiple threads from 227 * submitting refresh requests. 228 * 229 * A REFRESHING entry is one which is actively engaging the user land 230 * mountd code to re-authenticate the cache entry. 231 * 232 * An INVALID entry was one which was either STALE or REFRESHING 233 * and was deleted out of the encapsulating exi. Since we can't 234 * delete it yet, we mark it as INVALID, which lets the refreshq 235 * know not to work on it. 236 * 237 * Note that the auth state of the entry is always valid, even if the 238 * entry is STALE. Just as you can eat stale bread, you can consume 239 * a stale cache entry. The only time the contents change could be 240 * during the transistion from REFRESHING to FRESH. 241 */ 242 typedef enum auth_state { 243 NFS_AUTH_FRESH, 244 NFS_AUTH_STALE, 245 NFS_AUTH_REFRESHING, 246 NFS_AUTH_INVALID 247 } auth_state_t; 248 249 /* 250 * An authorization cache entry 251 * 252 * Either the state in auth_state will protect the 253 * contents or auth_lock must be held. 254 */ 255 struct auth_cache { 256 struct netbuf auth_addr; 257 int auth_flavor; 258 uid_t auth_clnt_uid; 259 gid_t auth_clnt_gid; 260 uint_t auth_clnt_ngids; 261 gid_t *auth_clnt_gids; 262 uid_t auth_srv_uid; 263 gid_t auth_srv_gid; 264 uint_t auth_srv_ngids; 265 gid_t *auth_srv_gids; 266 int auth_access; 267 time_t auth_time; 268 time_t auth_freshness; 269 auth_state_t auth_state; 270 char *auth_netid; 271 kmutex_t auth_lock; 272 struct auth_cache *auth_next; 273 }; 274 275 #define AUTH_TABLESIZE 32 276 277 /* 278 * Structure containing log file meta-data. 279 */ 280 struct log_file { 281 unsigned int lf_flags; /* flags (see below) */ 282 int lf_writers; /* outstanding writers */ 283 int lf_refcnt; /* references to this struct */ 284 caddr_t lf_path; /* buffer file location */ 285 vnode_t *lf_vp; /* vnode for the buffer file */ 286 kmutex_t lf_lock; 287 kcondvar_t lf_cv_waiters; 288 }; 289 290 /* 291 * log_file and log_buffer flags. 292 */ 293 #define L_WAITING 0x01 /* flush of in-core data to stable */ 294 /* storage in progress */ 295 #define L_PRINTED 0x02 /* error message printed to console */ 296 #define L_ERROR 0x04 /* error condition detected */ 297 298 /* 299 * The logging buffer information. 300 * This structure may be shared by multiple exportinfo structures, 301 * if they share the same buffer file. 302 * This structure contains the basic information about the buffer, such 303 * as it's location in the filesystem. 304 * 305 * 'lb_lock' protects all the fields in this structure except for 'lb_path', 306 * and 'lb_next'. 307 * 'lb_path' is a write-once/read-many field which needs no locking, it is 308 * set before the structure is linked to any exportinfo structure. 309 * 'lb_next' is protected by the log_buffer_list_lock. 310 */ 311 struct log_buffer { 312 unsigned int lb_flags; /* L_ONLIST set? */ 313 int lb_refcnt; /* references to this struct */ 314 unsigned int lb_rec_id; /* used to generate unique id */ 315 caddr_t lb_path; /* buffer file pathname */ 316 struct log_file *lb_logfile; /* points to log_file structure */ 317 kmutex_t lb_lock; 318 struct log_buffer *lb_next; 319 kcondvar_t lb_cv_waiters; 320 caddr_t lb_records; /* linked list of records to write */ 321 int lb_num_recs; /* # of records to write */ 322 ssize_t lb_size_queued; /* number of bytes queued for write */ 323 }; 324 325 #define LOG_BUFFER_HOLD(lbp) { \ 326 mutex_enter(&(lbp)->lb_lock); \ 327 (lbp)->lb_refcnt++; \ 328 mutex_exit(&(lbp)->lb_lock); \ 329 } 330 331 #define LOG_BUFFER_RELE(lbp) { \ 332 log_buffer_rele(lbp); \ 333 } 334 335 /* 336 * Structure for character set conversion mapping based on client address. 337 */ 338 struct charset_cache { 339 struct charset_cache *next; 340 kiconv_t inbound; 341 kiconv_t outbound; 342 struct sockaddr client_addr; 343 }; 344 345 /* Forward declarations */ 346 struct exportinfo; 347 struct exp_visible; 348 struct svc_req; 349 350 /* 351 * Treenodes are used to build tree representing every node which is part 352 * of nfs server pseudo namespace. They are connected with both exportinfo 353 * and exp_visible struct. They were introduced to avoid lookup of ".." 354 * in the underlying file system during unshare, which was failing if the 355 * file system was forcibly unmounted or if the directory was removed. 356 * One exp_visible_t can be shared via several treenode_t, i.e. 357 * different tree_vis can point to the same exp_visible_t. 358 * This will happen if some directory is on two different shared paths: 359 * E.g. after share /tmp/a/b1 and share /tmp/a/b2 there will be two treenodes 360 * corresponding to /tmp/a and both will have same value in tree_vis. 361 * 362 * 363 * 364 * NEW DATA STRUCT ORIGINAL DATA STRUCT 365 * 366 * ns_root +---+ +----------+ 367 * | / | |PSEUDO EXP|-->+---+ +---+ +---+ 368 * +---+--------- ----+----------+ | a |-->| k |-->| b | 369 * /\ +---+ +---+ +---+ 370 * / \ . . . 371 * +---+...\......... ..................... . . 372 * *| a | \ +----------+ . . 373 * +---+-----\------- ----|REAL EXP a| . . 374 * / \ +----------+ . . 375 * / +===+... ............................. . 376 * / *| k | +----------+ . 377 * / +===+--- ----|REAL EXP k| . 378 * / +----------+ . 379 * +===+................ ..................................... 380 * *| b | +----------+ 381 * +===+---------------- ----|REAL EXP b|-->+---+ 382 * \ +----------+ | d | 383 * +===+............. ...................+---+ 384 * | d | +----------+ 385 * +===+------------- ----|PSEUDO EXP|-->+---+ +---+ 386 * / +----------+ | e |-->| g | 387 * +---+................. ...................+---+ +---+ 388 * | e | . 389 * +---+ . 390 * \ . 391 * +---+.............. ............................ 392 * *| g | +----------+ 393 * +---+-------------- ----|REAL EXP g| 394 * +----------+ 395 * 396 * 397 * 398 * +===+ +---+ +---+ 399 * | b |..mountpoint | e |..directory/file *| a |..node is shared 400 * +===+ (VROOT) +---+ +---+ 401 * 402 * 403 * Bi-directional interconnect: 404 * treenode_t::tree_exi --------- exportinfo_t::exi_tree 405 * One-way direction connection: 406 * treenode_t::tree_vis .........> exp_visible_t 407 */ 408 /* Access to treenode_t is under protection of exported_lock RW_LOCK */ 409 typedef struct treenode { 410 /* support for generic n-ary trees */ 411 struct treenode *tree_parent; 412 struct treenode *tree_child_first; 413 struct treenode *tree_sibling; /* next sibling */ 414 /* private, nfs specific part */ 415 struct exportinfo *tree_exi; 416 struct exp_visible *tree_vis; 417 } treenode_t; 418 419 /* 420 * TREE_ROOT checks if the node corresponds to a filesystem root 421 * TREE_EXPORTED checks if the node is explicitly shared 422 */ 423 424 #define TREE_ROOT(t) \ 425 ((t)->tree_exi && (t)->tree_exi->exi_vp->v_flag & VROOT) 426 427 #define TREE_EXPORTED(t) \ 428 ((t)->tree_exi && !PSEUDO((t)->tree_exi)) 429 430 /* Root of nfs pseudo namespace */ 431 extern treenode_t *ns_root; 432 433 #define EXPTABLESIZE 256 434 435 struct exp_hash { 436 struct exportinfo *prev; /* ptr to the previous exportinfo */ 437 struct exportinfo *next; /* ptr to the next exportinfo */ 438 struct exportinfo **bckt; /* backpointer to the hash bucket */ 439 }; 440 441 /* 442 * A node associated with an export entry on the 443 * list of exported filesystems. 444 * 445 * exi_count+exi_lock protects an individual exportinfo from being freed 446 * when in use. 447 * 448 * You must have the writer lock on exported_lock to add/delete an exportinfo 449 * structure to/from the list. 450 * 451 * exi_volatile_dev maps to VSW_VOLATILEDEV. It means that the 452 * underlying fs devno can change on each mount. When set, the server 453 * should not use va_fsid for a GETATTR(FATTR4_FSID) reply. It must 454 * use exi_fsid because it is guaranteed to be persistent. This isn't 455 * in any way related to NFS4 volatile filehandles. 456 */ 457 struct exportinfo { 458 struct exportdata exi_export; 459 fsid_t exi_fsid; 460 struct fid exi_fid; 461 struct exp_hash fid_hash; 462 struct exp_hash path_hash; 463 struct treenode *exi_tree; 464 fhandle_t exi_fh; 465 krwlock_t exi_cache_lock; 466 kmutex_t exi_lock; 467 uint_t exi_count; 468 vnode_t *exi_vp; 469 vnode_t *exi_dvp; 470 struct auth_cache *exi_cache[AUTH_TABLESIZE]; 471 struct log_buffer *exi_logbuffer; 472 struct exp_visible *exi_visible; 473 struct charset_cache *exi_charset; 474 unsigned exi_volatile_dev:1; 475 unsigned exi_moved:1; 476 #ifdef VOLATILE_FH_TEST 477 uint32_t exi_volatile_id; 478 struct ex_vol_rename *exi_vol_rename; 479 kmutex_t exi_vol_rename_lock; 480 #endif /* VOLATILE_FH_TEST */ 481 }; 482 483 typedef struct exportinfo exportinfo_t; 484 typedef struct exportdata exportdata_t; 485 typedef struct secinfo secinfo_t; 486 487 /* 488 * exp_visible is a visible list per filesystem. It is for filesystems 489 * that may need a limited view of its contents. A pseudo export and 490 * a real export at the mount point (VROOT) which has a subtree shared 491 * has a visible list. 492 * 493 * The exi_visible field is NULL for normal, non=pseudo filesystems 494 * which do not have any subtree exported. If the field is non-null, 495 * it points to a list of visible entries, identified by vis_fid and/or 496 * vis_ino. The presence of a "visible" list means that if this export 497 * can only have a limited view, it can only view the entries in the 498 * exp_visible list. The directories in the fid list comprise paths that 499 * lead to exported directories. 500 * 501 * The vis_count field records the number of paths in this filesystem 502 * that use this directory. The vis_exported field is non-zero if the 503 * entry is an exported directory (leaf node). 504 * 505 * exp_visible itself is not reference counted. Each exp_visible is 506 * referenced twice: 507 * 1) from treenode::tree_vis 508 * 2) linked from exportinfo::exi_visible 509 * The 'owner' of exp_visible is the exportinfo structure. exp_visible should 510 * be always freed only from exportinfo_t, never from treenode::tree_vis. 511 */ 512 513 struct exp_visible { 514 vnode_t *vis_vp; 515 fid_t vis_fid; 516 u_longlong_t vis_ino; 517 int vis_count; 518 int vis_exported; 519 struct exp_visible *vis_next; 520 struct secinfo *vis_secinfo; 521 int vis_seccnt; 522 }; 523 typedef struct exp_visible exp_visible_t; 524 525 #define PSEUDO(exi) ((exi)->exi_export.ex_flags & EX_PSEUDO) 526 #define EXP_LINKED(exi) ((exi)->fid_hash.bckt != NULL) 527 528 #define EQFSID(fsidp1, fsidp2) \ 529 (((fsidp1)->val[0] == (fsidp2)->val[0]) && \ 530 ((fsidp1)->val[1] == (fsidp2)->val[1])) 531 532 #define EQFID(fidp1, fidp2) \ 533 ((fidp1)->fid_len == (fidp2)->fid_len && \ 534 bcmp((char *)(fidp1)->fid_data, (char *)(fidp2)->fid_data, \ 535 (uint_t)(fidp1)->fid_len) == 0) 536 537 #define exportmatch(exi, fsid, fid) \ 538 (EQFSID(&(exi)->exi_fsid, (fsid)) && EQFID(&(exi)->exi_fid, (fid))) 539 540 /* 541 * Returns true iff exported filesystem is read-only to the given host. 542 * 543 * Note: this macro should be as fast as possible since it's called 544 * on each NFS modification request. 545 */ 546 #define rdonly(ro, vp) ((ro) || vn_is_readonly(vp)) 547 #define rdonly4(req, cs) \ 548 (vn_is_readonly((cs)->vp) || \ 549 (nfsauth4_access((cs)->exi, (cs)->vp, (req), (cs)->basecr, NULL, \ 550 NULL, NULL, NULL) & (NFSAUTH_RO | NFSAUTH_LIMITED))) 551 552 extern int nfsauth4_access(struct exportinfo *, vnode_t *, 553 struct svc_req *, cred_t *, uid_t *, gid_t *, uint_t *, gid_t **); 554 extern int nfsauth4_secinfo_access(struct exportinfo *, 555 struct svc_req *, int, int, cred_t *); 556 extern int nfs_fhbcmp(char *, char *, int); 557 extern int nfs_exportinit(void); 558 extern void nfs_exportfini(void); 559 extern int chk_clnt_sec(struct exportinfo *, struct svc_req *); 560 extern int makefh(fhandle_t *, struct vnode *, struct exportinfo *); 561 extern int makefh_ol(fhandle_t *, struct exportinfo *, uint_t); 562 extern int makefh3(nfs_fh3 *, struct vnode *, struct exportinfo *); 563 extern int makefh3_ol(nfs_fh3 *, struct exportinfo *, uint_t); 564 extern vnode_t *nfs_fhtovp(fhandle_t *, struct exportinfo *); 565 extern vnode_t *nfs3_fhtovp(nfs_fh3 *, struct exportinfo *); 566 extern struct exportinfo *checkexport(fsid_t *, struct fid *); 567 extern struct exportinfo *checkexport4(fsid_t *, struct fid *, vnode_t *); 568 extern void exi_hold(struct exportinfo *); 569 extern void exi_rele(struct exportinfo *); 570 extern struct exportinfo *nfs_vptoexi(vnode_t *, vnode_t *, cred_t *, int *, 571 int *, bool_t); 572 extern int nfs_check_vpexi(vnode_t *, vnode_t *, cred_t *, 573 struct exportinfo **); 574 extern void export_link(struct exportinfo *); 575 extern void export_unlink(struct exportinfo *); 576 extern vnode_t *untraverse(vnode_t *); 577 extern int vn_is_nfs_reparse(vnode_t *, cred_t *); 578 extern int client_is_downrev(struct svc_req *); 579 extern char *build_symlink(vnode_t *, cred_t *, size_t *); 580 581 /* 582 * Functions that handle the NFSv4 server namespace 583 */ 584 extern exportinfo_t *vis2exi(treenode_t *); 585 extern int treeclimb_export(struct exportinfo *); 586 extern void treeclimb_unexport(struct exportinfo *); 587 extern int nfs_visible(struct exportinfo *, vnode_t *, int *); 588 extern int nfs_visible_inode(struct exportinfo *, ino64_t, int *); 589 extern int has_visible(struct exportinfo *, vnode_t *); 590 extern void free_visible(struct exp_visible *); 591 extern int nfs_exported(struct exportinfo *, vnode_t *); 592 extern struct exportinfo *pseudo_exportfs(vnode_t *, fid_t *, 593 struct exp_visible *, struct exportdata *); 594 extern int vop_fid_pseudo(vnode_t *, fid_t *); 595 extern int nfs4_vget_pseudo(struct exportinfo *, vnode_t **, fid_t *); 596 /* 597 * Functions that handle the NFSv4 server namespace security flavors 598 * information. 599 */ 600 extern void srv_secinfo_exp2pseu(struct exportdata *, struct exportdata *); 601 extern void srv_secinfo_list_free(struct secinfo *, int); 602 603 /* 604 * "public" and default (root) location for public filehandle 605 */ 606 extern struct exportinfo *exi_public, *exi_root; 607 extern fhandle_t nullfh2; /* for comparing V2 filehandles */ 608 extern krwlock_t exported_lock; 609 extern struct exportinfo *exptable[]; 610 611 /* 612 * Two macros for identifying public filehandles. 613 * A v2 public filehandle is 32 zero bytes. 614 * A v3 public filehandle is zero length. 615 */ 616 #define PUBLIC_FH2(fh) \ 617 ((fh)->fh_fsid.val[1] == 0 && \ 618 bcmp((fh), &nullfh2, sizeof (fhandle_t)) == 0) 619 620 #define PUBLIC_FH3(fh) \ 621 ((fh)->fh3_length == 0) 622 623 extern int makefh4(nfs_fh4 *, struct vnode *, struct exportinfo *); 624 extern vnode_t *nfs4_fhtovp(nfs_fh4 *, struct exportinfo *, nfsstat4 *); 625 626 #endif /* _KERNEL */ 627 628 #ifdef __cplusplus 629 } 630 #endif 631 632 #endif /* _NFS_EXPORT_H */ 633