1 /* 2 * Copyright (c) 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mount.h 8.21 (Berkeley) 5/20/95 34 * $FreeBSD: src/sys/sys/mount.h,v 1.89.2.7 2003/04/04 20:35:57 tegge Exp $ 35 * $DragonFly: src/sys/sys/mount.h,v 1.21 2005/07/26 15:43:35 hmp Exp $ 36 */ 37 38 #ifndef _SYS_MOUNT_H_ 39 #define _SYS_MOUNT_H_ 40 41 #include <sys/ucred.h> 42 43 #ifndef _KERNEL 44 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 45 #include <sys/stat.h> 46 #endif /* !_POSIX_C_SOURCE */ 47 #endif /* !_KERNEL */ 48 49 #include <sys/queue.h> 50 #ifdef _KERNEL 51 #include <sys/lock.h> 52 #endif 53 54 struct thread; 55 struct journal; 56 struct vop_ops; 57 struct vop_mountctl_args; 58 59 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 60 61 /* 62 * File identifier. 63 * These are unique per filesystem on a single machine. 64 */ 65 #define MAXFIDSZ 16 66 67 struct fid { 68 u_short fid_len; /* length of data in bytes */ 69 u_short fid_reserved; /* force longword alignment */ 70 char fid_data[MAXFIDSZ]; /* data (variable length) */ 71 }; 72 73 /* 74 * file system statistics 75 */ 76 77 #define MFSNAMELEN 16 /* length of fs type name, including null */ 78 #define MNAMELEN 80 /* length of buffer for returned name */ 79 80 struct statfs { 81 long f_spare2; /* placeholder */ 82 long f_bsize; /* fundamental file system block size */ 83 long f_iosize; /* optimal transfer block size */ 84 long f_blocks; /* total data blocks in file system */ 85 long f_bfree; /* free blocks in fs */ 86 long f_bavail; /* free blocks avail to non-superuser */ 87 long f_files; /* total file nodes in file system */ 88 long f_ffree; /* free file nodes in fs */ 89 fsid_t f_fsid; /* file system id */ 90 uid_t f_owner; /* user that mounted the filesystem */ 91 int f_type; /* type of filesystem */ 92 int f_flags; /* copy of mount exported flags */ 93 long f_syncwrites; /* count of sync writes since mount */ 94 long f_asyncwrites; /* count of async writes since mount */ 95 char f_fstypename[MFSNAMELEN]; /* fs type name */ 96 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 97 long f_syncreads; /* count of sync reads since mount */ 98 long f_asyncreads; /* count of async reads since mount */ 99 short f_spares1; /* unused spare */ 100 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 101 short f_spares2; /* unused spare */ 102 long f_spare[2]; /* unused spare */ 103 }; 104 105 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 106 /* 107 * Structure per mounted file system. Each mounted file system has an 108 * array of operations and an instance record. The file systems are 109 * put on a doubly linked list. 110 * 111 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 112 * are linked into mnt_nvnodelist. At some point in the near future the 113 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 114 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 115 * list. Filesystem kld's syncing code should remain compatible since 116 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 117 * 118 * NOTE: mnt_fsmanage structures. These structures are required by the new 119 * vnode operations vector abstraction. Each one contains its own operations 120 * vector which is registered just like VNODEOP_SET/vnodeopv_desc except it 121 * is done in the mount code rather then on vfs initialization. This 122 * structure is responsible for per-mount management, including vfs threading, 123 * journaling, and so forth. 124 * 125 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that 126 * only take namecache pointers will not be able to find their operations 127 * vector via namecache->nc_mount. 128 */ 129 TAILQ_HEAD(vnodelst, vnode); 130 TAILQ_HEAD(journallst, journal); 131 132 struct mount { 133 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 134 struct vfsops *mnt_op; /* operations on fs */ 135 struct vfsconf *mnt_vfc; /* configuration info */ 136 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 137 struct vnode *mnt_syncer; /* syncer vnode */ 138 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 139 struct lock mnt_lock; /* mount structure lock */ 140 int mnt_flag; /* flags shared with user */ 141 int mnt_kern_flag; /* kernel only flags */ 142 int mnt_maxsymlinklen; /* max size of short symlink */ 143 struct statfs mnt_stat; /* cache of filesystem stats */ 144 qaddr_t mnt_data; /* private data */ 145 time_t mnt_time; /* last time written*/ 146 u_int mnt_iosize_max; /* max IO request size */ 147 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 148 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 149 150 /* 151 * ops vectors have a fixed stacking order. All primary calls run 152 * through mnt_vn_ops. This field is typically assigned to 153 * mnt_vn_norm_ops. If journaling has been enabled this field is 154 * usually assigned to mnt_vn_journal_ops. 155 */ 156 struct vop_ops *mnt_vn_use_ops; /* current ops set */ 157 158 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */ 159 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */ 160 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */ 161 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */ 162 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */ 163 struct namecache *mnt_ncp; /* NCF_MNTPT ncp */ 164 165 struct journallst mnt_jlist; /* list of active journals */ 166 }; 167 168 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 169 170 /* 171 * User specifiable flags. 172 */ 173 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 174 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 175 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 176 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 177 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 178 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 179 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 180 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 181 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 182 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 183 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 184 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 185 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 186 187 /* 188 * NFS export related mount flags. 189 */ 190 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 191 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 192 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 193 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 194 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 195 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 196 197 /* 198 * Flags set by internal operations, 199 * but visible to the user. 200 * XXX some of these are not quite right.. (I've never seen the root flag set) 201 */ 202 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 203 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 204 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 205 #define MNT_USER 0x00008000 /* mounted by a user */ 206 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 207 208 /* 209 * Mask of flags that are visible to statfs() 210 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 211 * but the 'mount' program may need changing to handle this. 212 */ 213 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 214 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 215 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 216 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 217 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 218 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 219 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 220 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 221 /* 222 * External filesystem command modifier flags. 223 * Unmount can use the MNT_FORCE flag. 224 * XXX These are not STATES and really should be somewhere else. 225 */ 226 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 227 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 228 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 229 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 230 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 231 /* 232 * Internal filesystem control flags stored in mnt_kern_flag. 233 * 234 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 235 * past the mount point. This keeps the subtree stable during mounts 236 * and unmounts. 237 * 238 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 239 * dounmount() is still waiting to lock the mountpoint. This allows 240 * the filesystem to cancel operations that might otherwise deadlock 241 * with the unmount attempt (used by NFS). 242 */ 243 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 244 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 245 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 246 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 247 248 /* 249 * mountlist_*() defines 250 */ 251 #define MNTSCAN_FORWARD 0x0001 252 #define MNTSCAN_REVERSE 0x0002 253 #define MNTSCAN_NOBUSY 0x0004 254 255 #define MNTINS_FIRST 0x0001 256 #define MNTINS_LAST 0x0002 257 258 /* 259 * Sysctl CTL_VFS definitions. 260 * 261 * Second level identifier specifies which filesystem. Second level 262 * identifier VFS_VFSCONF returns information about all filesystems. 263 * Second level identifier VFS_GENERIC is non-terminal. 264 */ 265 #define VFS_VFSCONF 0 /* get configured filesystems */ 266 #define VFS_GENERIC 0 /* generic filesystem information */ 267 /* 268 * Third level identifiers for VFS_GENERIC are given below; third 269 * level identifiers for specific filesystems are given in their 270 * mount specific header files. 271 */ 272 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 273 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 274 as next argument */ 275 276 /* 277 * Flags for various system call interfaces. 278 * 279 * waitfor flags to vfs_sync() and getfsstat() 280 */ 281 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 282 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 283 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */ 284 285 /* 286 * Generic file handle 287 */ 288 struct fhandle { 289 fsid_t fh_fsid; /* File system id of mount point */ 290 struct fid fh_fid; /* File sys specific id */ 291 }; 292 typedef struct fhandle fhandle_t; 293 294 /* 295 * Export arguments for local filesystem mount calls. 296 */ 297 struct export_args { 298 int ex_flags; /* export related flags */ 299 uid_t ex_root; /* mapping for root uid */ 300 struct ucred ex_anon; /* mapping for anonymous user */ 301 struct sockaddr *ex_addr; /* net address to which exported */ 302 int ex_addrlen; /* and the net address length */ 303 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 304 int ex_masklen; /* and the smask length */ 305 char *ex_indexfile; /* index file for WebNFS URLs */ 306 }; 307 308 /* 309 * Structure holding information for a publicly exported filesystem 310 * (WebNFS). Currently the specs allow just for one such filesystem. 311 */ 312 struct nfs_public { 313 int np_valid; /* Do we hold valid information */ 314 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 315 struct mount *np_mount; /* Mountpoint of exported fs */ 316 char *np_index; /* Index file */ 317 }; 318 319 /* 320 * Filesystem configuration information. One of these exists for each 321 * type of filesystem supported by the kernel. These are searched at 322 * mount time to identify the requested filesystem. 323 */ 324 struct vfsconf { 325 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 326 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 327 int vfc_typenum; /* historic filesystem type number */ 328 int vfc_refcount; /* number mounted of this type */ 329 int vfc_flags; /* permanent flags */ 330 struct vfsconf *vfc_next; /* next in list */ 331 }; 332 333 struct ovfsconf { 334 void *vfc_vfsops; 335 char vfc_name[32]; 336 int vfc_index; 337 int vfc_refcount; 338 int vfc_flags; 339 }; 340 341 /* 342 * NB: these flags refer to IMPLEMENTATION properties, not properties of 343 * any actual mounts; i.e., it does not make sense to change the flags. 344 */ 345 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 346 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 347 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 348 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 349 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 350 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 351 352 #ifdef _KERNEL 353 354 #ifdef MALLOC_DECLARE 355 MALLOC_DECLARE(M_MOUNT); 356 #endif 357 extern int maxvfsconf; /* highest defined filesystem type */ 358 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 359 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 360 361 #endif 362 363 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 364 365 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 366 367 /* 368 * Operations supported on mounted file system. 369 */ 370 #ifdef __STDC__ 371 struct nlookupdata; 372 struct nlookupdata; 373 struct mbuf; 374 #endif 375 376 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data, 377 struct thread *td); 378 typedef int vfs_start_t(struct mount *mp, int flags, struct thread *td); 379 typedef int vfs_unmount_t(struct mount *mp, int mntflags, 380 struct thread *td); 381 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp); 382 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg, 383 struct thread *td); 384 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp, 385 struct thread *td); 386 typedef int vfs_sync_t(struct mount *mp, int waitfor, struct thread *td); 387 typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp); 388 typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp, 389 struct vnode **vpp); 390 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam, 391 int *extflagsp, struct ucred **credanonp); 392 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp); 393 typedef int vfs_init_t(struct vfsconf *); 394 typedef int vfs_uninit_t(struct vfsconf *); 395 typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname, 396 caddr_t arg, struct thread *td); 397 398 struct vfsops { 399 vfs_mount_t *vfs_mount; 400 vfs_start_t *vfs_start; 401 vfs_unmount_t *vfs_unmount; 402 vfs_root_t *vfs_root; 403 vfs_quotactl_t *vfs_quotactl; 404 vfs_statfs_t *vfs_statfs; 405 vfs_sync_t *vfs_sync; 406 vfs_vget_t *vfs_vget; 407 vfs_fhtovp_t *vfs_fhtovp; 408 vfs_checkexp_t *vfs_checkexp; 409 vfs_vptofh_t *vfs_vptofh; 410 vfs_init_t *vfs_init; 411 vfs_uninit_t *vfs_uninit; 412 vfs_extattrctl_t *vfs_extattrctl; 413 }; 414 415 #define VFS_MOUNT(MP, PATH, DATA, P) \ 416 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, P) 417 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 418 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 419 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 420 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 421 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 422 #define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P) 423 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 424 #define VFS_FHTOVP(MP, FIDP, VPP) \ 425 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 426 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 427 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 428 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 429 #define VFS_EXTATTRCTL(MP, C, N, A, P) \ 430 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, P) 431 432 #endif 433 434 #ifdef _KERNEL 435 436 #include <sys/module.h> 437 438 #define VFS_SET(vfsops, fsname, flags) \ 439 static struct vfsconf fsname ## _vfsconf = { \ 440 &vfsops, \ 441 #fsname, \ 442 -1, \ 443 0, \ 444 flags, \ 445 NULL \ 446 }; \ 447 static moduledata_t fsname ## _mod = { \ 448 #fsname, \ 449 vfs_modevent, \ 450 & fsname ## _vfsconf \ 451 }; \ 452 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 453 454 #endif 455 456 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 457 458 #include <net/radix.h> 459 460 #define AF_MAX 33 /* XXX */ 461 462 /* 463 * Network address lookup element 464 */ 465 struct netcred { 466 struct radix_node netc_rnodes[2]; 467 int netc_exflags; 468 struct ucred netc_anon; 469 }; 470 471 /* 472 * Network export information 473 */ 474 struct netexport { 475 struct netcred ne_defexported; /* Default export */ 476 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 477 }; 478 479 #endif 480 481 #ifdef _KERNEL 482 483 extern char *mountrootfsname; 484 485 /* 486 * exported vnode operations 487 */ 488 int dounmount (struct mount *, int, struct thread *); 489 int vfs_setpublicfs /* set publicly exported fs */ 490 (struct mount *, struct netexport *, struct export_args *); 491 int vfs_lock (struct mount *); /* lock a vfs */ 492 void vfs_msync (struct mount *, int); 493 void vfs_unlock (struct mount *); /* unlock a vfs */ 494 int vfs_busy (struct mount *, int, struct thread *); 495 void vfs_bufstats(void); 496 int vfs_export /* process mount export info */ 497 (struct mount *, struct netexport *, struct export_args *); 498 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 499 (struct mount *, struct netexport *, struct sockaddr *); 500 int vfs_allocate_syncvnode (struct mount *); 501 void vfs_getnewfsid (struct mount *); 502 dev_t vfs_getrootfsid (struct mount *); 503 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 504 int vfs_modevent (module_t, int, void *); 505 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 506 int vfs_rootmountalloc (char *, char *, struct mount **); 507 void vfs_unbusy (struct mount *, struct thread *); 508 void vfs_unmountall (void); 509 int vfs_register (struct vfsconf *); 510 int vfs_unregister (struct vfsconf *); 511 extern struct nfs_public nfs_pub; 512 513 /* 514 * Declarations for these vfs default operations are located in 515 * kern/vfs_default.c, they should be used instead of making "dummy" 516 * functions or casting entries in the VFS op table to "enopnotsupp()". 517 */ 518 vfs_start_t vfs_stdstart; 519 vfs_mount_t vfs_stdmount; 520 vfs_unmount_t vfs_stdunmount; 521 vfs_root_t vfs_stdroot; 522 vfs_quotactl_t vfs_stdquotactl; 523 vfs_statfs_t vfs_stdstatfs; 524 vfs_sync_t vfs_stdsync; 525 vfs_sync_t vfs_stdnosync; 526 vfs_vget_t vfs_stdvget; 527 vfs_fhtovp_t vfs_stdfhtovp; 528 vfs_checkexp_t vfs_stdcheckexp; 529 vfs_vptofh_t vfs_stdvptofh; 530 vfs_init_t vfs_stdinit; 531 vfs_uninit_t vfs_stduninit; 532 vfs_extattrctl_t vfs_stdextattrctl; 533 534 int journal_mountctl(struct vop_mountctl_args *ap); 535 void journal_remove_all_journals(struct mount *mp, int flags); 536 537 void mountlist_insert(struct mount *, int); 538 int mountlist_interlock(int (*callback)(struct mount *), struct mount *); 539 struct mount *mountlist_boot_getfirst(void); 540 void mountlist_remove(struct mount *mp); 541 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int); 542 543 #else /* !_KERNEL */ 544 545 #include <sys/cdefs.h> 546 547 __BEGIN_DECLS 548 int fstatfs (int, struct statfs *); 549 int getfh (const char *, fhandle_t *); 550 int getfsstat (struct statfs *, long, int); 551 int getmntinfo (struct statfs **, int); 552 int mount (const char *, const char *, int, void *); 553 int statfs (const char *, struct statfs *); 554 int unmount (const char *, int); 555 int fhopen (const struct fhandle *, int); 556 int fhstat (const struct fhandle *, struct stat *); 557 int fhstatfs (const struct fhandle *, struct statfs *); 558 559 /* C library stuff */ 560 void endvfsent (void); 561 struct ovfsconf *getvfsbyname (const char *); 562 struct ovfsconf *getvfsbytype (int); 563 struct ovfsconf *getvfsent (void); 564 #define getvfsbyname new_getvfsbyname 565 int new_getvfsbyname (const char *, struct vfsconf *); 566 void setvfsent (int); 567 int vfsisloadable (const char *); 568 int vfsload (const char *); 569 __END_DECLS 570 571 #endif /* _KERNEL */ 572 573 #endif /* !_SYS_MOUNT_H_ */ 574 575