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 1.31 2007/09/03 17:06:22 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 #ifndef _SYS_NAMECACHE_H_ 57 #include <sys/namecache.h> 58 #endif 59 #endif 60 61 struct thread; 62 struct journal; 63 struct vop_ops; 64 struct vop_mountctl_args; 65 66 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 67 68 /* 69 * File identifier. 70 * These are unique per filesystem on a single machine. 71 */ 72 #define MAXFIDSZ 16 73 74 struct fid { 75 u_short fid_len; /* length of data in bytes */ 76 u_short fid_reserved; /* force longword alignment */ 77 char fid_data[MAXFIDSZ]; /* data (variable length) */ 78 }; 79 80 /* 81 * file system statistics 82 */ 83 84 #define MFSNAMELEN 16 /* length of fs type name, including null */ 85 #define MNAMELEN 80 /* length of buffer for returned name */ 86 87 struct statfs { 88 long f_spare2; /* placeholder */ 89 long f_bsize; /* fundamental file system block size */ 90 long f_iosize; /* optimal transfer block size */ 91 long f_blocks; /* total data blocks in file system */ 92 long f_bfree; /* free blocks in fs */ 93 long f_bavail; /* free blocks avail to non-superuser */ 94 long f_files; /* total file nodes in file system */ 95 long f_ffree; /* free file nodes in fs */ 96 fsid_t f_fsid; /* file system id */ 97 uid_t f_owner; /* user that mounted the filesystem */ 98 int f_type; /* type of filesystem */ 99 int f_flags; /* copy of mount exported flags */ 100 long f_syncwrites; /* count of sync writes since mount */ 101 long f_asyncwrites; /* count of async writes since mount */ 102 char f_fstypename[MFSNAMELEN]; /* fs type name */ 103 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 104 long f_syncreads; /* count of sync reads since mount */ 105 long f_asyncreads; /* count of async reads since mount */ 106 short f_spares1; /* unused spare */ 107 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 108 short f_spares2; /* unused spare */ 109 long f_spare[2]; /* unused spare */ 110 }; 111 112 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 113 /* 114 * Structure per mounted file system. Each mounted file system has an 115 * array of operations and an instance record. The file systems are 116 * put on a doubly linked list. 117 * 118 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 119 * are linked into mnt_nvnodelist. At some point in the near future the 120 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 121 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 122 * list. Filesystem kld's syncing code should remain compatible since 123 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 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 void *mnt_unused01; 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 nchandle mnt_ncmountpt; /* mount point */ 164 struct nchandle mnt_ncmounton; /* mounted on */ 165 int mnt_refs; /* nchandle references */ 166 167 struct journallst mnt_jlist; /* list of active journals */ 168 u_int8_t *mnt_jbitmap; /* streamid bitmap */ 169 int16_t mnt_streamid; /* last streamid */ 170 }; 171 172 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 173 174 /* 175 * User specifiable flags. 176 */ 177 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 178 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 179 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 180 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 181 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 182 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 183 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 184 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 185 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 186 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 187 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 188 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 189 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 190 191 /* 192 * NFS export related mount flags. 193 */ 194 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 195 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 196 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 197 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 198 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 199 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 200 201 /* 202 * Flags set by internal operations, 203 * but visible to the user. 204 * XXX some of these are not quite right.. (I've never seen the root flag set) 205 */ 206 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 207 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 208 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 209 #define MNT_USER 0x00008000 /* mounted by a user */ 210 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 211 212 /* 213 * Mask of flags that are visible to statfs() 214 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 215 * but the 'mount' program may need changing to handle this. 216 */ 217 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 218 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 219 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 220 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 221 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 222 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 223 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 224 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 225 /* 226 * External filesystem command modifier flags. 227 * Unmount can use the MNT_FORCE flag. 228 * XXX These are not STATES and really should be somewhere else. 229 */ 230 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 231 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 232 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 233 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 234 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 235 /* 236 * Internal filesystem control flags stored in mnt_kern_flag. 237 * 238 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 239 * past the mount point. This keeps the subtree stable during mounts 240 * and unmounts. 241 * 242 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 243 * dounmount() is still waiting to lock the mountpoint. This allows 244 * the filesystem to cancel operations that might otherwise deadlock 245 * with the unmount attempt (used by NFS). 246 * 247 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one. 248 */ 249 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 250 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */ 251 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 252 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 253 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 254 #define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */ 255 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */ 256 257 /* 258 * mountlist_*() defines 259 */ 260 #define MNTSCAN_FORWARD 0x0001 261 #define MNTSCAN_REVERSE 0x0002 262 #define MNTSCAN_NOBUSY 0x0004 263 264 #define MNTINS_FIRST 0x0001 265 #define MNTINS_LAST 0x0002 266 267 /* 268 * Sysctl CTL_VFS definitions. 269 * 270 * Second level identifier specifies which filesystem. Second level 271 * identifier VFS_VFSCONF returns information about all filesystems. 272 * Second level identifier VFS_GENERIC is non-terminal. 273 */ 274 #define VFS_VFSCONF 0 /* get configured filesystems */ 275 #define VFS_GENERIC 0 /* generic filesystem information */ 276 /* 277 * Third level identifiers for VFS_GENERIC are given below; third 278 * level identifiers for specific filesystems are given in their 279 * mount specific header files. 280 */ 281 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 282 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 283 as next argument */ 284 285 /* 286 * Flags for various system call interfaces. 287 * 288 * waitfor flags to vfs_sync() and getfsstat() 289 */ 290 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 291 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 292 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */ 293 294 /* 295 * Generic file handle 296 */ 297 struct fhandle { 298 fsid_t fh_fsid; /* File system id of mount point */ 299 struct fid fh_fid; /* File sys specific id */ 300 }; 301 typedef struct fhandle fhandle_t; 302 303 /* 304 * Export arguments for local filesystem mount calls. 305 */ 306 struct export_args { 307 int ex_flags; /* export related flags */ 308 uid_t ex_root; /* mapping for root uid */ 309 struct ucred ex_anon; /* mapping for anonymous user */ 310 struct sockaddr *ex_addr; /* net address to which exported */ 311 int ex_addrlen; /* and the net address length */ 312 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 313 int ex_masklen; /* and the smask length */ 314 char *ex_indexfile; /* index file for WebNFS URLs */ 315 }; 316 317 /* 318 * Structure holding information for a publicly exported filesystem 319 * (WebNFS). Currently the specs allow just for one such filesystem. 320 */ 321 struct nfs_public { 322 int np_valid; /* Do we hold valid information */ 323 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 324 struct mount *np_mount; /* Mountpoint of exported fs */ 325 char *np_index; /* Index file */ 326 }; 327 328 /* 329 * Filesystem configuration information. One of these exists for each 330 * type of filesystem supported by the kernel. These are searched at 331 * mount time to identify the requested filesystem. 332 */ 333 struct vfsconf { 334 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 335 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 336 int vfc_typenum; /* historic filesystem type number */ 337 int vfc_refcount; /* number mounted of this type */ 338 int vfc_flags; /* permanent flags */ 339 struct vfsconf *vfc_next; /* next in list */ 340 }; 341 342 struct ovfsconf { 343 void *vfc_vfsops; 344 char vfc_name[32]; 345 int vfc_index; 346 int vfc_refcount; 347 int vfc_flags; 348 }; 349 350 /* 351 * NB: these flags refer to IMPLEMENTATION properties, not properties of 352 * any actual mounts; i.e., it does not make sense to change the flags. 353 */ 354 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 355 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 356 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 357 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 358 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 359 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 360 361 #ifdef _KERNEL 362 363 #ifdef MALLOC_DECLARE 364 MALLOC_DECLARE(M_MOUNT); 365 #endif 366 extern int maxvfsconf; /* highest defined filesystem type */ 367 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 368 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 369 370 #endif 371 372 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 373 374 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 375 376 /* 377 * Operations supported on mounted file system. 378 */ 379 #ifdef __STDC__ 380 struct nlookupdata; 381 struct nlookupdata; 382 struct mbuf; 383 #endif 384 385 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data, 386 struct ucred *cred); 387 typedef int vfs_start_t(struct mount *mp, int flags); 388 typedef int vfs_unmount_t(struct mount *mp, int mntflags); 389 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp); 390 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg, 391 struct ucred *cred); 392 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp, 393 struct ucred *cred); 394 typedef int vfs_sync_t(struct mount *mp, int waitfor); 395 typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp); 396 typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp, 397 struct vnode **vpp); 398 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam, 399 int *extflagsp, struct ucred **credanonp); 400 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp); 401 typedef int vfs_init_t(struct vfsconf *); 402 typedef int vfs_uninit_t(struct vfsconf *); 403 typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname, 404 caddr_t arg, struct ucred *cred); 405 406 struct vfsops { 407 vfs_mount_t *vfs_mount; 408 vfs_start_t *vfs_start; 409 vfs_unmount_t *vfs_unmount; 410 vfs_root_t *vfs_root; 411 vfs_quotactl_t *vfs_quotactl; 412 vfs_statfs_t *vfs_statfs; 413 vfs_sync_t *vfs_sync; 414 vfs_vget_t *vfs_vget; 415 vfs_fhtovp_t *vfs_fhtovp; 416 vfs_checkexp_t *vfs_checkexp; 417 vfs_vptofh_t *vfs_vptofh; 418 vfs_init_t *vfs_init; 419 vfs_uninit_t *vfs_uninit; 420 vfs_extattrctl_t *vfs_extattrctl; 421 }; 422 423 #define VFS_MOUNT(MP, PATH, DATA, CRED) \ 424 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED) 425 #define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS) 426 #define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE) 427 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 428 #define VFS_QUOTACTL(MP,C,U,A,CRED) \ 429 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED) 430 #define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED) 431 #define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT) 432 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 433 #define VFS_FHTOVP(MP, FIDP, VPP) \ 434 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 435 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 436 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 437 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 438 #define VFS_EXTATTRCTL(MP, C, N, A, CRED) \ 439 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED) 440 441 #endif 442 443 #ifdef _KERNEL 444 445 #include <sys/module.h> 446 447 #define VFS_SET(vfsops, fsname, flags) \ 448 static struct vfsconf fsname ## _vfsconf = { \ 449 &vfsops, \ 450 #fsname, \ 451 -1, \ 452 0, \ 453 flags, \ 454 NULL \ 455 }; \ 456 static moduledata_t fsname ## _mod = { \ 457 #fsname, \ 458 vfs_modevent, \ 459 & fsname ## _vfsconf \ 460 }; \ 461 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 462 463 #endif 464 465 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 466 467 #include <net/radix.h> 468 469 #define AF_MAX 33 /* XXX */ 470 471 /* 472 * Network address lookup element 473 */ 474 struct netcred { 475 struct radix_node netc_rnodes[2]; 476 int netc_exflags; 477 struct ucred netc_anon; 478 }; 479 480 /* 481 * Network export information 482 */ 483 struct netexport { 484 struct netcred ne_defexported; /* Default export */ 485 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 486 }; 487 488 #endif 489 490 #ifdef _KERNEL 491 492 extern char *mountrootfsname; 493 494 /* 495 * exported vnode operations 496 */ 497 int dounmount (struct mount *, int); 498 int vfs_setpublicfs /* set publicly exported fs */ 499 (struct mount *, struct netexport *, struct export_args *); 500 int vfs_lock (struct mount *); /* lock a vfs */ 501 void vfs_msync (struct mount *, int); 502 void vfs_unlock (struct mount *); /* unlock a vfs */ 503 int vfs_busy (struct mount *, int); 504 void vfs_bufstats(void); 505 int vfs_export /* process mount export info */ 506 (struct mount *, struct netexport *, struct export_args *); 507 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 508 (struct mount *, struct netexport *, struct sockaddr *); 509 int vfs_allocate_syncvnode (struct mount *); 510 void vfs_getnewfsid (struct mount *); 511 cdev_t vfs_getrootfsid (struct mount *); 512 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 513 int vfs_modevent (module_t, int, void *); 514 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 515 int vfs_rootmountalloc (char *, char *, struct mount **); 516 void vfs_unbusy (struct mount *); 517 void vfs_unmountall (void); 518 int vfs_register (struct vfsconf *); 519 int vfs_unregister (struct vfsconf *); 520 extern struct nfs_public nfs_pub; 521 522 /* 523 * Declarations for these vfs default operations are located in 524 * kern/vfs_default.c, they should be used instead of making "dummy" 525 * functions or casting entries in the VFS op table to "enopnotsupp()". 526 */ 527 vfs_start_t vfs_stdstart; 528 vfs_mount_t vfs_stdmount; 529 vfs_unmount_t vfs_stdunmount; 530 vfs_root_t vfs_stdroot; 531 vfs_quotactl_t vfs_stdquotactl; 532 vfs_statfs_t vfs_stdstatfs; 533 vfs_sync_t vfs_stdsync; 534 vfs_sync_t vfs_stdnosync; 535 vfs_vget_t vfs_stdvget; 536 vfs_fhtovp_t vfs_stdfhtovp; 537 vfs_checkexp_t vfs_stdcheckexp; 538 vfs_vptofh_t vfs_stdvptofh; 539 vfs_init_t vfs_stdinit; 540 vfs_uninit_t vfs_stduninit; 541 vfs_extattrctl_t vfs_stdextattrctl; 542 543 int journal_mountctl(struct vop_mountctl_args *ap); 544 void journal_remove_all_journals(struct mount *mp, int flags); 545 546 void mountlist_insert(struct mount *, int); 547 int mountlist_interlock(int (*callback)(struct mount *), struct mount *); 548 struct mount *mountlist_boot_getfirst(void); 549 void mountlist_remove(struct mount *mp); 550 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int); 551 552 #else /* !_KERNEL */ 553 554 #include <sys/cdefs.h> 555 556 __BEGIN_DECLS 557 int fstatfs (int, struct statfs *); 558 int getfh (const char *, fhandle_t *); 559 int getfsstat (struct statfs *, long, int); 560 int getmntinfo (struct statfs **, int); 561 int mount (const char *, const char *, int, void *); 562 int statfs (const char *, struct statfs *); 563 int unmount (const char *, int); 564 int fhopen (const struct fhandle *, int); 565 int fhstat (const struct fhandle *, struct stat *); 566 int fhstatfs (const struct fhandle *, struct statfs *); 567 568 /* C library stuff */ 569 void endvfsent (void); 570 struct ovfsconf *getvfsbyname (const char *); 571 struct ovfsconf *getvfsbytype (int); 572 struct ovfsconf *getvfsent (void); 573 #define getvfsbyname new_getvfsbyname 574 int new_getvfsbyname (const char *, struct vfsconf *); 575 void setvfsent (int); 576 int vfsisloadable (const char *); 577 int vfsload (const char *); 578 __END_DECLS 579 580 #endif /* _KERNEL */ 581 582 #endif /* !_SYS_MOUNT_H_ */ 583 584