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 1.26 2006/05/21 03:43:47 dillon 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 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 50 #ifndef _SYS_QUEUE_H_ 51 #include <sys/queue.h> 52 #endif 53 #ifndef _SYS_LOCK_H_ 54 #include <sys/lock.h> 55 #endif 56 #endif 57 58 struct thread; 59 struct journal; 60 struct vop_ops; 61 struct vop_mountctl_args; 62 63 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 64 65 /* 66 * File identifier. 67 * These are unique per filesystem on a single machine. 68 */ 69 #define MAXFIDSZ 16 70 71 struct fid { 72 u_short fid_len; /* length of data in bytes */ 73 u_short fid_reserved; /* force longword alignment */ 74 char fid_data[MAXFIDSZ]; /* data (variable length) */ 75 }; 76 77 /* 78 * file system statistics 79 */ 80 81 #define MFSNAMELEN 16 /* length of fs type name, including null */ 82 #define MNAMELEN 80 /* length of buffer for returned name */ 83 84 struct statfs { 85 long f_spare2; /* placeholder */ 86 long f_bsize; /* fundamental file system block size */ 87 long f_iosize; /* optimal transfer block size */ 88 long f_blocks; /* total data blocks in file system */ 89 long f_bfree; /* free blocks in fs */ 90 long f_bavail; /* free blocks avail to non-superuser */ 91 long f_files; /* total file nodes in file system */ 92 long f_ffree; /* free file nodes in fs */ 93 fsid_t f_fsid; /* file system id */ 94 uid_t f_owner; /* user that mounted the filesystem */ 95 int f_type; /* type of filesystem */ 96 int f_flags; /* copy of mount exported flags */ 97 long f_syncwrites; /* count of sync writes since mount */ 98 long f_asyncwrites; /* count of async writes since mount */ 99 char f_fstypename[MFSNAMELEN]; /* fs type name */ 100 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 101 long f_syncreads; /* count of sync reads since mount */ 102 long f_asyncreads; /* count of async reads since mount */ 103 short f_spares1; /* unused spare */ 104 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 105 short f_spares2; /* unused spare */ 106 long f_spare[2]; /* unused spare */ 107 }; 108 109 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 110 /* 111 * Structure per mounted file system. Each mounted file system has an 112 * array of operations and an instance record. The file systems are 113 * put on a doubly linked list. 114 * 115 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 116 * are linked into mnt_nvnodelist. At some point in the near future the 117 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 118 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 119 * list. Filesystem kld's syncing code should remain compatible since 120 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 121 * 122 * NOTE: mnt_fsmanage structures. These structures are required by the new 123 * vnode operations vector abstraction. Each one contains its own operations 124 * vector which is registered just like VNODEOP_SET/vnodeopv_desc except it 125 * is done in the mount code rather then on vfs initialization. This 126 * structure is responsible for per-mount management, including vfs threading, 127 * journaling, and so forth. 128 * 129 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that 130 * only take namecache pointers will not be able to find their operations 131 * vector via namecache->nc_mount. 132 */ 133 TAILQ_HEAD(vnodelst, vnode); 134 TAILQ_HEAD(journallst, journal); 135 136 struct mount { 137 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 138 struct vfsops *mnt_op; /* operations on fs */ 139 struct vfsconf *mnt_vfc; /* configuration info */ 140 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 141 struct vnode *mnt_syncer; /* syncer vnode */ 142 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 143 struct lock mnt_lock; /* mount structure lock */ 144 int mnt_flag; /* flags shared with user */ 145 int mnt_kern_flag; /* kernel only flags */ 146 int mnt_maxsymlinklen; /* max size of short symlink */ 147 struct statfs mnt_stat; /* cache of filesystem stats */ 148 qaddr_t mnt_data; /* private data */ 149 time_t mnt_time; /* last time written*/ 150 u_int mnt_iosize_max; /* max IO request size */ 151 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 152 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 153 154 /* 155 * ops vectors have a fixed stacking order. All primary calls run 156 * through mnt_vn_ops. This field is typically assigned to 157 * mnt_vn_norm_ops. If journaling has been enabled this field is 158 * usually assigned to mnt_vn_journal_ops. 159 */ 160 struct vop_ops *mnt_vn_use_ops; /* current ops set */ 161 162 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */ 163 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */ 164 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */ 165 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */ 166 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */ 167 struct namecache *mnt_ncp; /* NCF_MNTPT ncp */ 168 169 struct journallst mnt_jlist; /* list of active journals */ 170 u_int8_t *mnt_jbitmap; /* streamid bitmap */ 171 int16_t mnt_streamid; /* last streamid */ 172 }; 173 174 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 175 176 /* 177 * User specifiable flags. 178 */ 179 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 180 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 181 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 182 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 183 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 184 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 185 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 186 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 187 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 188 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 189 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 190 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 191 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 192 193 /* 194 * NFS export related mount flags. 195 */ 196 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 197 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 198 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 199 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 200 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 201 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 202 203 /* 204 * Flags set by internal operations, 205 * but visible to the user. 206 * XXX some of these are not quite right.. (I've never seen the root flag set) 207 */ 208 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 209 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 210 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 211 #define MNT_USER 0x00008000 /* mounted by a user */ 212 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 213 214 /* 215 * Mask of flags that are visible to statfs() 216 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 217 * but the 'mount' program may need changing to handle this. 218 */ 219 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 220 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 221 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 222 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 223 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 224 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 225 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 226 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 227 /* 228 * External filesystem command modifier flags. 229 * Unmount can use the MNT_FORCE flag. 230 * XXX These are not STATES and really should be somewhere else. 231 */ 232 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 233 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 234 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 235 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 236 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 237 /* 238 * Internal filesystem control flags stored in mnt_kern_flag. 239 * 240 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 241 * past the mount point. This keeps the subtree stable during mounts 242 * and unmounts. 243 * 244 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 245 * dounmount() is still waiting to lock the mountpoint. This allows 246 * the filesystem to cancel operations that might otherwise deadlock 247 * with the unmount attempt (used by NFS). 248 */ 249 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 250 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 251 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 252 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 253 254 /* 255 * mountlist_*() defines 256 */ 257 #define MNTSCAN_FORWARD 0x0001 258 #define MNTSCAN_REVERSE 0x0002 259 #define MNTSCAN_NOBUSY 0x0004 260 261 #define MNTINS_FIRST 0x0001 262 #define MNTINS_LAST 0x0002 263 264 /* 265 * Sysctl CTL_VFS definitions. 266 * 267 * Second level identifier specifies which filesystem. Second level 268 * identifier VFS_VFSCONF returns information about all filesystems. 269 * Second level identifier VFS_GENERIC is non-terminal. 270 */ 271 #define VFS_VFSCONF 0 /* get configured filesystems */ 272 #define VFS_GENERIC 0 /* generic filesystem information */ 273 /* 274 * Third level identifiers for VFS_GENERIC are given below; third 275 * level identifiers for specific filesystems are given in their 276 * mount specific header files. 277 */ 278 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 279 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 280 as next argument */ 281 282 /* 283 * Flags for various system call interfaces. 284 * 285 * waitfor flags to vfs_sync() and getfsstat() 286 */ 287 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 288 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 289 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */ 290 291 /* 292 * Generic file handle 293 */ 294 struct fhandle { 295 fsid_t fh_fsid; /* File system id of mount point */ 296 struct fid fh_fid; /* File sys specific id */ 297 }; 298 typedef struct fhandle fhandle_t; 299 300 /* 301 * Export arguments for local filesystem mount calls. 302 */ 303 struct export_args { 304 int ex_flags; /* export related flags */ 305 uid_t ex_root; /* mapping for root uid */ 306 struct ucred ex_anon; /* mapping for anonymous user */ 307 struct sockaddr *ex_addr; /* net address to which exported */ 308 int ex_addrlen; /* and the net address length */ 309 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 310 int ex_masklen; /* and the smask length */ 311 char *ex_indexfile; /* index file for WebNFS URLs */ 312 }; 313 314 /* 315 * Structure holding information for a publicly exported filesystem 316 * (WebNFS). Currently the specs allow just for one such filesystem. 317 */ 318 struct nfs_public { 319 int np_valid; /* Do we hold valid information */ 320 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 321 struct mount *np_mount; /* Mountpoint of exported fs */ 322 char *np_index; /* Index file */ 323 }; 324 325 /* 326 * Filesystem configuration information. One of these exists for each 327 * type of filesystem supported by the kernel. These are searched at 328 * mount time to identify the requested filesystem. 329 */ 330 struct vfsconf { 331 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 332 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 333 int vfc_typenum; /* historic filesystem type number */ 334 int vfc_refcount; /* number mounted of this type */ 335 int vfc_flags; /* permanent flags */ 336 struct vfsconf *vfc_next; /* next in list */ 337 }; 338 339 struct ovfsconf { 340 void *vfc_vfsops; 341 char vfc_name[32]; 342 int vfc_index; 343 int vfc_refcount; 344 int vfc_flags; 345 }; 346 347 /* 348 * NB: these flags refer to IMPLEMENTATION properties, not properties of 349 * any actual mounts; i.e., it does not make sense to change the flags. 350 */ 351 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 352 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 353 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 354 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 355 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 356 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 357 358 #ifdef _KERNEL 359 360 #ifdef MALLOC_DECLARE 361 MALLOC_DECLARE(M_MOUNT); 362 #endif 363 extern int maxvfsconf; /* highest defined filesystem type */ 364 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 365 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 366 367 #endif 368 369 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 370 371 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 372 373 /* 374 * Operations supported on mounted file system. 375 */ 376 #ifdef __STDC__ 377 struct nlookupdata; 378 struct nlookupdata; 379 struct mbuf; 380 #endif 381 382 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data, 383 struct ucred *cred); 384 typedef int vfs_start_t(struct mount *mp, int flags); 385 typedef int vfs_unmount_t(struct mount *mp, int mntflags); 386 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp); 387 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg, 388 struct ucred *cred); 389 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp, 390 struct ucred *cred); 391 typedef int vfs_sync_t(struct mount *mp, int waitfor); 392 typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp); 393 typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp, 394 struct vnode **vpp); 395 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam, 396 int *extflagsp, struct ucred **credanonp); 397 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp); 398 typedef int vfs_init_t(struct vfsconf *); 399 typedef int vfs_uninit_t(struct vfsconf *); 400 typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname, 401 caddr_t arg, struct ucred *cred); 402 403 struct vfsops { 404 vfs_mount_t *vfs_mount; 405 vfs_start_t *vfs_start; 406 vfs_unmount_t *vfs_unmount; 407 vfs_root_t *vfs_root; 408 vfs_quotactl_t *vfs_quotactl; 409 vfs_statfs_t *vfs_statfs; 410 vfs_sync_t *vfs_sync; 411 vfs_vget_t *vfs_vget; 412 vfs_fhtovp_t *vfs_fhtovp; 413 vfs_checkexp_t *vfs_checkexp; 414 vfs_vptofh_t *vfs_vptofh; 415 vfs_init_t *vfs_init; 416 vfs_uninit_t *vfs_uninit; 417 vfs_extattrctl_t *vfs_extattrctl; 418 }; 419 420 #define VFS_MOUNT(MP, PATH, DATA, CRED) \ 421 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED) 422 #define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS) 423 #define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE) 424 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 425 #define VFS_QUOTACTL(MP,C,U,A,CRED) \ 426 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED) 427 #define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED) 428 #define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT) 429 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 430 #define VFS_FHTOVP(MP, FIDP, VPP) \ 431 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 432 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 433 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 434 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 435 #define VFS_EXTATTRCTL(MP, C, N, A, CRED) \ 436 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED) 437 438 #endif 439 440 #ifdef _KERNEL 441 442 #include <sys/module.h> 443 444 #define VFS_SET(vfsops, fsname, flags) \ 445 static struct vfsconf fsname ## _vfsconf = { \ 446 &vfsops, \ 447 #fsname, \ 448 -1, \ 449 0, \ 450 flags, \ 451 NULL \ 452 }; \ 453 static moduledata_t fsname ## _mod = { \ 454 #fsname, \ 455 vfs_modevent, \ 456 & fsname ## _vfsconf \ 457 }; \ 458 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 459 460 #endif 461 462 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 463 464 #include <net/radix.h> 465 466 #define AF_MAX 33 /* XXX */ 467 468 /* 469 * Network address lookup element 470 */ 471 struct netcred { 472 struct radix_node netc_rnodes[2]; 473 int netc_exflags; 474 struct ucred netc_anon; 475 }; 476 477 /* 478 * Network export information 479 */ 480 struct netexport { 481 struct netcred ne_defexported; /* Default export */ 482 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 483 }; 484 485 #endif 486 487 #ifdef _KERNEL 488 489 extern char *mountrootfsname; 490 491 /* 492 * exported vnode operations 493 */ 494 int dounmount (struct mount *, int); 495 int vfs_setpublicfs /* set publicly exported fs */ 496 (struct mount *, struct netexport *, struct export_args *); 497 int vfs_lock (struct mount *); /* lock a vfs */ 498 void vfs_msync (struct mount *, int); 499 void vfs_unlock (struct mount *); /* unlock a vfs */ 500 int vfs_busy (struct mount *, int); 501 void vfs_bufstats(void); 502 int vfs_export /* process mount export info */ 503 (struct mount *, struct netexport *, struct export_args *); 504 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 505 (struct mount *, struct netexport *, struct sockaddr *); 506 int vfs_allocate_syncvnode (struct mount *); 507 void vfs_getnewfsid (struct mount *); 508 dev_t vfs_getrootfsid (struct mount *); 509 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 510 int vfs_modevent (module_t, int, void *); 511 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 512 int vfs_rootmountalloc (char *, char *, struct mount **); 513 void vfs_unbusy (struct mount *); 514 void vfs_unmountall (void); 515 int vfs_register (struct vfsconf *); 516 int vfs_unregister (struct vfsconf *); 517 extern struct nfs_public nfs_pub; 518 519 /* 520 * Declarations for these vfs default operations are located in 521 * kern/vfs_default.c, they should be used instead of making "dummy" 522 * functions or casting entries in the VFS op table to "enopnotsupp()". 523 */ 524 vfs_start_t vfs_stdstart; 525 vfs_mount_t vfs_stdmount; 526 vfs_unmount_t vfs_stdunmount; 527 vfs_root_t vfs_stdroot; 528 vfs_quotactl_t vfs_stdquotactl; 529 vfs_statfs_t vfs_stdstatfs; 530 vfs_sync_t vfs_stdsync; 531 vfs_sync_t vfs_stdnosync; 532 vfs_vget_t vfs_stdvget; 533 vfs_fhtovp_t vfs_stdfhtovp; 534 vfs_checkexp_t vfs_stdcheckexp; 535 vfs_vptofh_t vfs_stdvptofh; 536 vfs_init_t vfs_stdinit; 537 vfs_uninit_t vfs_stduninit; 538 vfs_extattrctl_t vfs_stdextattrctl; 539 540 int journal_mountctl(struct vop_mountctl_args *ap); 541 void journal_remove_all_journals(struct mount *mp, int flags); 542 543 void mountlist_insert(struct mount *, int); 544 int mountlist_interlock(int (*callback)(struct mount *), struct mount *); 545 struct mount *mountlist_boot_getfirst(void); 546 void mountlist_remove(struct mount *mp); 547 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int); 548 549 #else /* !_KERNEL */ 550 551 #include <sys/cdefs.h> 552 553 __BEGIN_DECLS 554 int fstatfs (int, struct statfs *); 555 int getfh (const char *, fhandle_t *); 556 int getfsstat (struct statfs *, long, int); 557 int getmntinfo (struct statfs **, int); 558 int mount (const char *, const char *, int, void *); 559 int statfs (const char *, struct statfs *); 560 int unmount (const char *, int); 561 int fhopen (const struct fhandle *, int); 562 int fhstat (const struct fhandle *, struct stat *); 563 int fhstatfs (const struct fhandle *, struct statfs *); 564 565 /* C library stuff */ 566 void endvfsent (void); 567 struct ovfsconf *getvfsbyname (const char *); 568 struct ovfsconf *getvfsbytype (int); 569 struct ovfsconf *getvfsent (void); 570 #define getvfsbyname new_getvfsbyname 571 int new_getvfsbyname (const char *, struct vfsconf *); 572 void setvfsent (int); 573 int vfsisloadable (const char *); 574 int vfsload (const char *); 575 __END_DECLS 576 577 #endif /* _KERNEL */ 578 579 #endif /* !_SYS_MOUNT_H_ */ 580 581