2 * Copyright (c) 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * @(#)mount.h 8.21 (Berkeley) 5/20/95
30 * $FreeBSD: src/sys/sys/mount.h,v 1.89.2.7 2003/04/04 20:35:57 tegge Exp $
36 #include <sys/queue.h>
38 #include <sys/ucred.h>
41 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
43 #endif /* !_POSIX_C_SOURCE */
46 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
50 #ifndef _SYS_NAMECACHE_H_
51 #include <sys/namecache.h>
53 #ifndef _SYS_STATVFS_H_
54 #include <sys/statvfs.h>
56 #ifndef _SYS_THREAD_H_
57 #include <sys/thread.h>
59 #include <sys/vfs_quota.h>
60 #include <sys/mplock2.h>
66 struct vop_mountctl_args;
68 struct vmntvnodescan_info;
70 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
72 #define fsidcmp(a, b) memcmp((a), (b), sizeof(fsid_t))
75 * File identifier. These are unique per filesystem on a single machine.
77 * fix_ext is also used by HAMMER.
82 u_short fid_len; /* length of data in bytes */
83 u_short fid_ext; /* extended data */
84 char fid_data[MAXFIDSZ]; /* data (variable length) */
88 * file system statistics
91 #define MFSNAMELEN 16 /* length of fs type name, including null */
92 #define MNAMELEN 80 /* length of buffer for returned name */
95 long f_spare2; /* placeholder */
96 long f_bsize; /* fundamental file system block size */
97 long f_iosize; /* optimal transfer block size */
98 long f_blocks; /* total data blocks in file system */
99 long f_bfree; /* free blocks in fs */
100 long f_bavail; /* free blocks avail to non-superuser */
101 long f_files; /* total file nodes in file system */
102 long f_ffree; /* free file nodes in fs */
103 fsid_t f_fsid; /* file system id */
104 uid_t f_owner; /* user that mounted the filesystem */
105 int f_type; /* type of filesystem */
106 int f_flags; /* copy of mount exported flags */
107 long f_syncwrites; /* count of sync writes since mount */
108 long f_asyncwrites; /* count of async writes since mount */
109 char f_fstypename[MFSNAMELEN]; /* fs type name */
110 char f_mntonname[MNAMELEN]; /* directory on which mounted */
111 long f_syncreads; /* count of sync reads since mount */
112 long f_asyncreads; /* count of async reads since mount */
113 short f_spares1; /* unused spare */
114 char f_mntfromname[MNAMELEN];/* mounted filesystem */
115 short f_spares2; /* unused spare */
116 long f_spare[2]; /* unused spare */
119 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
122 * bio_ops are associated with the mount structure and used in conjuction
123 * with the b_dep field in a buffer. Currently softupdates and HAMMER
124 * utilize this field.
126 * All bio_ops callbacks must be MPSAFE and could be called without
132 TAILQ_ENTRY(bio_ops) entry;
133 void (*io_start) (struct buf *);
134 void (*io_complete) (struct buf *);
135 void (*io_deallocate) (struct buf *);
136 int (*io_fsync) (struct vnode *);
137 int (*io_sync) (struct mount *);
138 void (*io_movedeps) (struct buf *, struct buf *);
139 int (*io_countdeps) (struct buf *, int);
140 int (*io_checkread) (struct buf *);
141 int (*io_checkwrite) (struct buf *);
147 * vfs quota accounting
149 * uids and gids often come in contiguous blocks; use a small linear
150 * array as the basic in-memory accounting allocation unit
152 #define ACCT_CHUNK_BITS 5
153 #define ACCT_CHUNK_NIDS (1<<ACCT_CHUNK_BITS)
154 #define ACCT_CHUNK_MASK (ACCT_CHUNK_NIDS - 1)
162 RB_ENTRY(ac_unode) rb_entry;
164 struct ac_counters uid_chunk[ACCT_CHUNK_NIDS];
168 RB_ENTRY(ac_gnode) rb_entry;
170 struct ac_counters gid_chunk[ACCT_CHUNK_NIDS];
173 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
176 RB_HEAD(ac_utree,ac_unode) ac_uroot;
177 RB_HEAD(ac_gtree,ac_gnode) ac_groot;
178 uint64_t ac_bytes; /* total bytes used */
180 struct spinlock ac_spin; /* protective spinlock */
185 * Structure per mounted file system. Each mounted file system has an
186 * array of operations and an instance record. The file systems are
187 * put on a doubly linked list.
189 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
190 * are linked into mnt_nvnodelist. At some point in the near future the
191 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
192 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
193 * list. Filesystem kld's syncing code should remain compatible since
194 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
196 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
197 * only take namecache pointers will not be able to find their operations
198 * vector via namecache->nc_mount.
200 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
202 * mnt_token interlocks operations which adjust the mount
203 * structure and will also be held through VFS operations
204 * for VFSes not flagged MPSAFE.
206 * The VFS should pre-set VFCF_MPSAFE in the VFS_SET() to
207 * avoid use of the mplock during mounting. This will also
208 * cause MNTK_ALL_MPSAFE to be set in mnt_kern_flags. If the
209 * VFS does not set VFCF_MPSAFE then it can set individual
210 * MNTK_*_MPSAFE flags in mnt_kern_flags.
212 TAILQ_HEAD(vnodelst, vnode);
213 TAILQ_HEAD(journallst, journal);
216 TAILQ_ENTRY(mount) mnt_list; /* mount list */
217 struct vfsops *mnt_op; /* operations on fs */
218 struct vfsconf *mnt_vfc; /* configuration info */
219 u_int mnt_namecache_gen; /* ++ to clear negative hits */
220 u_int mnt_pbuf_count; /* pbuf usage limit */
221 struct vnode *mnt_syncer; /* syncer vnode */
222 struct syncer_ctx *mnt_syncer_ctx; /* syncer process context */
223 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
224 TAILQ_HEAD(,vmntvnodescan_info) mnt_vnodescan_list;
225 struct lock mnt_lock; /* mount structure lock */
226 int mnt_flag; /* flags shared with user */
227 int mnt_kern_flag; /* kernel only flags */
228 int mnt_maxsymlinklen; /* max size of short symlink */
229 struct statfs mnt_stat; /* cache of filesystem stats */
230 struct statvfs mnt_vstat; /* extended stats */
231 qaddr_t mnt_data; /* private data */
232 time_t mnt_time; /* last time written*/
233 u_int mnt_iosize_max; /* max IO request size */
234 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
235 int mnt_nvnodelistsize; /* # of vnodes on this mount */
238 * ops vectors have a fixed stacking order. All primary calls run
239 * through mnt_vn_ops. This field is typically assigned to
240 * mnt_vn_norm_ops. If journaling has been enabled this field is
241 * usually assigned to mnt_vn_journal_ops.
243 struct vop_ops *mnt_vn_use_ops; /* current ops set */
245 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
246 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
247 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
248 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
249 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
250 struct nchandle mnt_ncmountpt; /* mount point */
251 struct nchandle mnt_ncmounton; /* mounted on */
252 char mnt_pad[16]; /* (try to cache-align refs) */
253 struct ucred *mnt_cred; /* for cr_prison */
254 int mnt_refs; /* nchandle references */
255 int mnt_hold; /* prevent kfree */
256 struct lwkt_token mnt_token; /* token lock if not MPSAFE */
257 struct journallst mnt_jlist; /* list of active journals */
258 u_int8_t *mnt_jbitmap; /* streamid bitmap */
259 int16_t mnt_streamid; /* last streamid */
261 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
262 struct lock mnt_renlock; /* rename directory lock */
264 struct vfs_acct mnt_acct; /* vfs space accounting */
265 RB_ENTRY(mount) mnt_node; /* mnt_stat.f_fsid */
268 #endif /* _KERNEL || _KERNEL_STRUCTURES */
271 * User specifiable flags.
273 #define MNT_RDONLY 0x00000001 /* read only filesystem */
274 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
275 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
276 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
277 #define MNT_NODEV 0x00000010 /* don't interpret special files */
278 #define MNT_AUTOMOUNTED 0x00000020 /* mounted by automountd(8) */
279 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
280 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
281 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */
282 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
283 #define MNT_TRIM 0x01000000 /* Enable online FS trimming */
284 #define MNT_NOATIME 0x10000000 /* disable update of file access time */
285 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
286 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
289 * NFS export related mount flags.
291 #define MNT_EXRDONLY 0x00000080 /* exported read only */
292 #define MNT_EXPORTED 0x00000100 /* file system is exported */
293 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
294 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
295 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
296 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
299 * Flags set by internal operations,
300 * but visible to the user.
301 * XXX some of these are not quite right.. (I've never seen the root flag set)
303 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
304 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
305 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
306 #define MNT_USER 0x00008000 /* mounted by a user */
307 #define MNT_IGNORE 0x00800000 /* do not show entry in df */
310 * Mask of flags that are visible to statfs()
311 * XXX I think that this could now become (~(MNT_CMDFLAGS))
312 * but the 'mount' program may need changing to handle this.
314 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
315 MNT_NOSUID | MNT_NODEV | \
316 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
317 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
318 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
319 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
320 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
321 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC| \
322 MNT_TRIM | MNT_AUTOMOUNTED)
324 * External filesystem command modifier flags.
325 * Unmount can use the MNT_FORCE flag.
326 * XXX These are not STATES and really should be somewhere else.
328 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
329 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
330 #define MNT_RELOAD 0x00040000 /* reload filesystem data */
331 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
332 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
334 * Internal filesystem control flags stored in mnt_kern_flag.
336 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
337 * past the mount point. This keeps the subtree stable during mounts
340 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
341 * dounmount() is still waiting to lock the mountpoint. This allows
342 * the filesystem to cancel operations that might otherwise deadlock
343 * with the unmount attempt (used by NFS).
345 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
347 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
348 #define MNTK_QUICKHALT 0x00008000 /* quick unmount on halt */
349 #define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
350 #define MNTK_RD_MPSAFE 0x00020000 /* vop_read is MPSAFE */
351 #define MNTK_WR_MPSAFE 0x00040000 /* vop_write is MPSAFE */
352 #define MNTK_GA_MPSAFE 0x00080000 /* vop_getattr is MPSAFE */
353 #define MNTK_IN_MPSAFE 0x00100000 /* vop_inactive is MPSAFE */
354 #define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
355 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */
356 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
357 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
358 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
359 #define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
360 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
361 #define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
362 #define MNTK_THR_SYNC 0x40000000 /* fs sync thread requested */
363 #define MNTK_ST_MPSAFE 0x80000000 /* (mfs) vfs_start is MPSAFE */
365 #define MNTK_ALL_MPSAFE (MNTK_MPSAFE | MNTK_RD_MPSAFE | MNTK_WR_MPSAFE | \
366 MNTK_GA_MPSAFE | MNTK_IN_MPSAFE | MNTK_SG_MPSAFE | \
370 * mountlist_*() defines
372 #define MNTSCAN_FORWARD 0x0001
373 #define MNTSCAN_REVERSE 0x0002
374 #define MNTSCAN_NOBUSY 0x0004
375 #define MNTSCAN_NOUNLOCK 0x0008
377 #define MNTINS_FIRST 0x0001
378 #define MNTINS_LAST 0x0002
381 * Sysctl CTL_VFS definitions.
383 * Second level identifier specifies which filesystem. Second level
384 * identifier VFS_VFSCONF returns information about all filesystems.
385 * Second level identifier VFS_GENERIC is non-terminal.
387 #define VFS_VFSCONF 0 /* get configured filesystems */
388 #define VFS_GENERIC 0 /* generic filesystem information */
390 * Third level identifiers for VFS_GENERIC are given below; third
391 * level identifiers for specific filesystems are given in their
392 * mount specific header files.
394 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
395 #define VFS_CONF 2 /* struct: vfsconf for filesystem given
401 * We have to cache the supplied mp because in certain situations
402 * the related vnode might go away across the use case (vop_strategy()).
404 #define VFS_MPLOCK_DECLARE struct mount *xlock_mp
406 #define VFS_MPLOCK(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
408 #define VFS_MPLOCK_FLAG(mp, flag) \
410 if (mp->mnt_kern_flag & flag) { \
414 get_mplock(); /* TEMPORARY */ \
415 lwkt_gettoken(&xlock_mp->mnt_token); \
419 #define VFS_MPUNLOCK() \
422 lwkt_reltoken(&xlock_mp->mnt_token); \
423 rel_mplock(); /* TEMPORARY */ \
428 * Flags for various system call interfaces.
430 * waitfor flags to vfs_sync() and getfsstat()
432 #define MNT_WAIT 0x0001 /* synchronously wait for I/O to complete */
433 #define MNT_NOWAIT 0x0002 /* start all I/O, but do not wait for it */
434 #define MNT_LAZY 0x0004 /* be lazy and do not necessarily push it all */
436 #define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
439 * Generic file handle
442 fsid_t fh_fsid; /* File system id of mount point */
443 struct fid fh_fid; /* File sys specific id */
445 typedef struct fhandle fhandle_t;
448 * Export arguments for local filesystem mount calls.
451 int ex_flags; /* export related flags */
452 uid_t ex_root; /* mapping for root uid */
453 struct ucred ex_anon; /* mapping for anonymous user */
454 struct sockaddr *ex_addr; /* net address to which exported */
455 int ex_addrlen; /* and the net address length */
456 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
457 int ex_masklen; /* and the smask length */
458 char *ex_indexfile; /* index file for WebNFS URLs */
462 * Structure holding information for a publicly exported filesystem
463 * (WebNFS). Currently the specs allow just for one such filesystem.
466 int np_valid; /* Do we hold valid information */
467 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
468 struct mount *np_mount; /* Mountpoint of exported fs */
469 char *np_index; /* Index file */
473 * Filesystem configuration information. One of these exists for each
474 * type of filesystem supported by the kernel. These are searched at
475 * mount time to identify the requested filesystem.
478 struct vfsops *vfc_vfsops; /* filesystem operations vector */
479 char vfc_name[MFSNAMELEN]; /* filesystem type name */
480 int vfc_typenum; /* historic filesystem type number */
481 int vfc_refcount; /* number mounted of this type */
482 int vfc_flags; /* permanent flags */
483 STAILQ_ENTRY(vfsconf) vfc_next; /* next in list */
495 * NB: these flags refer to IMPLEMENTATION properties, not properties of
496 * any actual mounts; i.e., it does not make sense to change the flags.
498 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
499 #define VFCF_NETWORK 0x00020000 /* may get data over the network */
500 #define VFCF_READONLY 0x00040000 /* writes are not implemented */
501 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
502 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
503 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
504 #define VFCF_MPSAFE 0x00400000 /* VFS is fully MPSAFE */
507 #define VQ_NOTRESP 0x0001 /* server down */
508 #define VQ_NEEDAUTH 0x0002 /* server bad auth */
509 #define VQ_LOWDISK 0x0004 /* we're low on space */
510 #define VQ_MOUNT 0x0008 /* new filesystem arrived */
511 #define VQ_UNMOUNT 0x0010 /* filesystem has left */
512 #define VQ_DEAD 0x0020 /* filesystem is dead, needs force unmount */
513 #define VQ_ASSIST 0x0040 /* filesystem needs assistance from external
515 #define VQ_NOTRESPLOCK 0x0080 /* server lockd down */
516 #define VQ_FLAG0100 0x0100 /* placeholder */
517 #define VQ_FLAG0200 0x0200 /* placeholder */
518 #define VQ_FLAG0400 0x0400 /* placeholder */
519 #define VQ_FLAG0800 0x0800 /* placeholder */
520 #define VQ_FLAG1000 0x1000 /* placeholder */
521 #define VQ_FLAG2000 0x2000 /* placeholder */
522 #define VQ_FLAG4000 0x4000 /* placeholder */
523 #define VQ_FLAG8000 0x8000 /* placeholder */
527 #ifdef MALLOC_DECLARE
528 MALLOC_DECLARE(M_MOUNT);
530 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
532 struct vfsconf *vfsconf_find_by_name(const char *);
533 struct vfsconf *vfsconf_find_by_typenum(int);
534 int vfsconf_get_maxtypenum(void);
535 int vfsconf_each(int (*)(struct vfsconf *, void *), void *);
539 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
541 TAILQ_HEAD(mntlist, mount); /* struct mntlist */
544 * Operations supported on mounted file system.
550 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
552 typedef int vfs_start_t(struct mount *mp, int flags);
553 typedef int vfs_unmount_t(struct mount *mp, int mntflags);
554 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
555 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
557 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
559 typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
561 typedef int vfs_sync_t(struct mount *mp, int waitfor);
562 typedef int vfs_vget_t(struct mount *mp, struct vnode *dvp,
563 ino_t ino, struct vnode **vpp);
564 typedef int vfs_fhtovp_t(struct mount *mp, struct vnode *rootvp,
565 struct fid *fhp, struct vnode **vpp);
566 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
567 int *extflagsp, struct ucred **credanonp);
568 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
569 typedef int vfs_init_t(struct vfsconf *);
570 typedef int vfs_uninit_t(struct vfsconf *);
571 typedef int vfs_extattrctl_t(struct mount *mp, int cmd, struct vnode *vp,
572 int attrnamespace, const char *attrname,
574 typedef int vfs_acinit_t(struct mount *mp);
575 typedef void vfs_acdone_t(struct mount *mp);
576 typedef void vfs_account_t(struct mount *mp,
577 uid_t uid, gid_t gid, int64_t delta);
578 typedef void vfs_ncpgen_set_t(struct mount *mp, struct namecache *ncp);
579 typedef int vfs_ncpgen_test_t(struct mount *mp, struct namecache *ncp);
580 typedef int vfs_modifying_t(struct mount *mp);
582 int vfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred);
583 int vfs_start(struct mount *mp, int flags);
584 int vfs_unmount(struct mount *mp, int mntflags);
585 int vfs_root(struct mount *mp, struct vnode **vpp);
586 int vfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
588 int vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred);
589 int vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred);
590 int vfs_sync(struct mount *mp, int waitfor);
591 int vfs_vget(struct mount *mp, struct vnode *dvp,
592 ino_t ino, struct vnode **vpp);
593 int vfs_fhtovp(struct mount *mp, struct vnode *rootvp,
594 struct fid *fhp, struct vnode **vpp);
595 int vfs_checkexp(struct mount *mp, struct sockaddr *nam,
596 int *extflagsp, struct ucred **credanonp);
597 int vfs_vptofh(struct vnode *vp, struct fid *fhp);
598 int vfs_init(struct vfsconf *vfc);
599 int vfs_uninit(struct vfsconf *vfc, struct vfsconf *vfsp);
600 int vfs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
601 int attrnamespace, const char *attrname,
603 int vfs_modifying(struct mount *mp);
607 vfs_mount_t *vfs_mount;
608 vfs_start_t *vfs_start;
609 vfs_unmount_t *vfs_unmount;
610 vfs_root_t *vfs_root;
611 vfs_quotactl_t *vfs_quotactl;
612 vfs_statfs_t *vfs_statfs;
613 vfs_sync_t *vfs_sync;
614 vfs_vget_t *vfs_vget;
615 vfs_fhtovp_t *vfs_fhtovp;
616 vfs_checkexp_t *vfs_checkexp;
617 vfs_vptofh_t *vfs_vptofh;
618 vfs_init_t *vfs_init;
619 vfs_uninit_t *vfs_uninit;
620 vfs_extattrctl_t *vfs_extattrctl;
621 vfs_statvfs_t *vfs_statvfs;
622 vfs_acinit_t *vfs_acinit;
623 vfs_acdone_t *vfs_acdone;
624 vfs_account_t *vfs_account;
625 vfs_ncpgen_set_t *vfs_ncpgen_set;
626 vfs_ncpgen_test_t *vfs_ncpgen_test;
627 vfs_modifying_t *vfs_modifying;
630 #define VFSOPSF_NOSYNCERTHR 0x00000001
632 #define VFS_MOUNT(MP, PATH, DATA, CRED) \
633 vfs_mount(MP, PATH, DATA, CRED)
634 #define VFS_START(MP, FLAGS) \
636 #define VFS_UNMOUNT(MP, FORCE) \
637 vfs_unmount(MP, FORCE)
638 #define VFS_ROOT(MP, VPP) \
640 #define VFS_QUOTACTL(MP, C, U, A, CRED) \
641 vfs_quotactl(MP, C, U, A, CRED)
642 #define VFS_STATFS(MP, SBP, CRED) \
643 vfs_statfs(MP, SBP, CRED)
644 #define VFS_STATVFS(MP, SBP, CRED) \
645 vfs_statvfs(MP, SBP, CRED)
646 #define VFS_SYNC(MP, WAIT) \
648 #define VFS_VGET(MP, DVP, INO, VPP) \
649 vfs_vget(MP, DVP, INO, VPP)
650 #define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
651 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
652 #define VFS_VPTOFH(VP, FIDP) \
654 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
655 vfs_checkexp(MP, NAM, EXFLG, CRED)
656 #define VFS_EXTATTRCTL(MP, C, FVP, NS, N, CRED) \
657 vfs_extattrctl(MP, C, FVP, NS, N, CRED)
658 #define VFS_ACCOUNT(MP, U, G, D) \
659 if ((MP->mnt_op->vfs_account != NULL) && (D != 0)) \
660 MP->mnt_op->vfs_account(MP, U, G, D);
661 #define VFS_ACINIT(MP, ERROR) \
662 if (vfs_quota_enabled && MP->mnt_op->vfs_acinit != NULL) \
663 ERROR = MP->mnt_op->vfs_acinit(MP);
664 #define VFS_ACDONE(MP) \
665 if (vfs_quota_enabled && MP->mnt_op->vfs_acdone != NULL) \
666 MP->mnt_op->vfs_acdone(MP);
667 #define VFS_NCPGEN_SET(MP, NCP) \
668 MP->mnt_op->vfs_ncpgen_set(MP, NCP)
669 #define VFS_NCPGEN_TEST(MP, NCP) \
670 MP->mnt_op->vfs_ncpgen_test(MP, NCP)
671 #define VFS_MODIFYING(MP) \
672 MP->mnt_op->vfs_modifying(MP)
678 #include <sys/module.h>
680 #define VFS_SET(vfsops, fsname, flags) \
681 static struct vfsconf fsname ## _vfsconf = { \
689 static moduledata_t fsname ## _mod = { \
692 & fsname ## _vfsconf \
694 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
698 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
700 #include <net/radix.h>
702 #define AF_MAX 36 /* XXX */
705 * Network address lookup element
708 struct radix_node netc_rnodes[2];
710 struct ucred netc_anon;
714 * Network export information
717 struct netcred ne_defexported; /* Default export */
718 struct radix_node_head *ne_inethead; /* IPv4 radix */
719 struct radix_node_head *ne_inet6head; /* IPv6 radix */
720 struct radix_node_head *ne_maskhead; /* Shared mask radix */
722 #define NE_LOCK(nep) lwkt_getpooltoken(nep)
723 #define NE_UNLOCK(nep) lwkt_relpooltoken(nep)
724 #define NE_ASSERT_LOCKED(nep) \
725 ASSERT_LWKT_TOKEN_HELD(lwkt_token_pool_lookup(nep))
731 * exported vnode operations
733 void mount_hold(struct mount *);
734 void mount_drop(struct mount *);
735 int dounmount (struct mount *, int, int);
736 int vfs_setpublicfs /* set publicly exported fs */
737 (struct mount *, struct netexport *, const struct export_args *);
738 int vfs_lock (struct mount *); /* lock a vfs */
739 void vfs_msync (struct mount *, int);
740 void vfs_unlock (struct mount *); /* unlock a vfs */
741 int vfs_busy (struct mount *, int);
742 int vfs_export /* process mount export info */
743 (struct mount *, struct netexport *, const struct export_args *);
744 struct netcred *vfs_export_lookup /* lookup host in fs export list */
745 (struct mount *, struct netexport *, struct sockaddr *);
746 int vfs_allocate_syncvnode (struct mount *);
747 void vfs_getnewfsid (struct mount *);
748 void vfs_setfsid(struct mount *mp, fsid_t *template);
749 cdev_t vfs_getrootfsid (struct mount *);
750 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
751 int vfs_modevent (module_t, int, void *);
752 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
753 int vfs_rootmountalloc (char *, char *, struct mount **);
754 void vfs_unbusy (struct mount *);
755 void vfs_unmountall (int halting);
756 int vfs_register (struct vfsconf *);
757 int vfs_unregister (struct vfsconf *);
758 extern struct nfs_public nfs_pub;
761 * Declarations for these vfs default operations are located in
762 * kern/vfs_default.c, they should be used instead of making "dummy"
763 * functions or casting entries in the VFS op table to "enopnotsupp()".
765 vfs_start_t vfs_stdstart;
766 vfs_root_t vfs_stdroot;
767 vfs_quotactl_t vfs_stdquotactl;
768 vfs_statfs_t vfs_stdstatfs;
769 vfs_statvfs_t vfs_stdstatvfs;
770 vfs_sync_t vfs_stdsync;
771 vfs_sync_t vfs_stdnosync;
772 vfs_vget_t vfs_stdvget;
773 vfs_fhtovp_t vfs_stdfhtovp;
774 vfs_checkexp_t vfs_stdcheckexp;
775 vfs_vptofh_t vfs_stdvptofh;
776 vfs_init_t vfs_stdinit;
777 vfs_uninit_t vfs_stduninit;
778 vfs_extattrctl_t vfs_stdextattrctl;
779 vfs_acinit_t vfs_stdac_init;
780 vfs_acdone_t vfs_stdac_done;
781 vfs_account_t vfs_stdaccount;
782 vfs_account_t vfs_noaccount;
783 vfs_ncpgen_set_t vfs_stdncpgen_set;
784 vfs_ncpgen_test_t vfs_stdncpgen_test;
785 vfs_modifying_t vfs_stdmodifying;
787 struct vop_access_args;
788 int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
789 mode_t ino_mode, u_int32_t ino_flags);
790 int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
791 uid_t uid, struct ucred *cred);
792 uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
793 struct ucred *cred, mode_t *modep);
794 int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
795 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
796 int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
798 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
799 int vop_helper_read_shortcut(struct vop_read_args *ap);
801 void add_bio_ops(struct bio_ops *ops);
802 void rem_bio_ops(struct bio_ops *ops);
804 int journal_mountctl(struct vop_mountctl_args *ap);
805 void journal_remove_all_journals(struct mount *mp, int flags);
807 void mountlist_insert(struct mount *, int);
808 int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
809 struct mount *mountlist_boot_getfirst(void);
810 void mountlist_remove(struct mount *mp);
811 int mountlist_exists(struct mount *mp);
812 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
813 struct mount *mount_get_by_nc(struct namecache *ncp);
816 #include <sys/cdefs.h>
819 int fstatfs (int, struct statfs *);
820 int getfh (const char *, fhandle_t *);
821 int getfsstat (struct statfs *, long, int);
822 int getmntinfo (struct statfs **, int);
823 int getmntvinfo (struct statfs **, struct statvfs **, int);
824 int mount (const char *, const char *, int, void *);
825 int statfs (const char *, struct statfs *);
826 int unmount (const char *, int);
827 int fhopen (const struct fhandle *, int);
828 int fhstat (const struct fhandle *, struct stat *);
829 int fhstatfs (const struct fhandle *, struct statfs *);
831 /* C library stuff */
832 void endvfsent (void);
833 struct ovfsconf *getvfsbyname (const char *);
834 struct ovfsconf *getvfsbytype (int);
835 struct ovfsconf *getvfsent (void);
836 #define getvfsbyname new_getvfsbyname
837 int new_getvfsbyname (const char *, struct vfsconf *);
838 void setvfsent (int);
839 int vfsisloadable (const char *);
840 int vfsload (const char *);
845 #endif /* !_SYS_MOUNT_H_ */