VFS accounting: implement an initialization framework
[dragonfly.git] / sys / sys / mount.h
CommitLineData
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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 $
67863d04 35 * $DragonFly: src/sys/sys/mount.h,v 1.47 2008/09/17 21:44:19 dillon Exp $
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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
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49#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
50#ifndef _SYS_QUEUE_H_
984263bc 51#include <sys/queue.h>
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52#endif
53#ifndef _SYS_LOCK_H_
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54#include <sys/lock.h>
55#endif
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56#ifndef _SYS_NAMECACHE_H_
57#include <sys/namecache.h>
58#endif
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59#ifndef _SYS_STATVFS_H_
60#include <sys/statvfs.h>
61#endif
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62#ifndef _SYS_THREAD_H_
63#include <sys/thread.h>
64#endif
e788edda 65#include <sys/vfs_quota.h>
03d6a592 66#endif
984263bc 67
dadab5e9 68struct thread;
2281065e 69struct journal;
0961aa92 70struct vop_ops;
2281065e 71struct vop_mountctl_args;
0e735c8f 72struct statvfs;
dadab5e9 73
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74typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
75
76/*
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77 * File identifier. These are unique per filesystem on a single machine.
78 *
79 * fix_ext is also used by HAMMER.
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80 */
81#define MAXFIDSZ 16
82
83struct fid {
84 u_short fid_len; /* length of data in bytes */
3e3a527f 85 u_short fid_ext; /* extended data */
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86 char fid_data[MAXFIDSZ]; /* data (variable length) */
87};
88
89/*
90 * file system statistics
91 */
92
93#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 94#define MNAMELEN 80 /* length of buffer for returned name */
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95
96struct statfs {
97 long f_spare2; /* placeholder */
98 long f_bsize; /* fundamental file system block size */
99 long f_iosize; /* optimal transfer block size */
100 long f_blocks; /* total data blocks in file system */
101 long f_bfree; /* free blocks in fs */
102 long f_bavail; /* free blocks avail to non-superuser */
103 long f_files; /* total file nodes in file system */
104 long f_ffree; /* free file nodes in fs */
105 fsid_t f_fsid; /* file system id */
106 uid_t f_owner; /* user that mounted the filesystem */
107 int f_type; /* type of filesystem */
108 int f_flags; /* copy of mount exported flags */
109 long f_syncwrites; /* count of sync writes since mount */
110 long f_asyncwrites; /* count of async writes since mount */
111 char f_fstypename[MFSNAMELEN]; /* fs type name */
112 char f_mntonname[MNAMELEN]; /* directory on which mounted */
113 long f_syncreads; /* count of sync reads since mount */
114 long f_asyncreads; /* count of async reads since mount */
115 short f_spares1; /* unused spare */
116 char f_mntfromname[MNAMELEN];/* mounted filesystem */
117 short f_spares2; /* unused spare */
118 long f_spare[2]; /* unused spare */
119};
120
ec12abe0 121#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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122
123/*
124 * bio_ops are associated with the mount structure and used in conjuction
125 * with the b_dep field in a buffer. Currently softupdates and HAMMER
126 * utilize this field.
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127 *
128 * All bio_ops callbacks must be MPSAFE and could be called without
129 * the mplock.
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130 */
131struct buf;
132
133struct bio_ops {
134 TAILQ_ENTRY(bio_ops) entry;
135 void (*io_start) (struct buf *);
136 void (*io_complete) (struct buf *);
137 void (*io_deallocate) (struct buf *);
138 int (*io_fsync) (struct vnode *);
139 int (*io_sync) (struct mount *);
140 void (*io_movedeps) (struct buf *, struct buf *);
141 int (*io_countdeps) (struct buf *, int);
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142 int (*io_checkread) (struct buf *);
143 int (*io_checkwrite) (struct buf *);
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144};
145
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146/*
147 * Structure per mounted file system. Each mounted file system has an
148 * array of operations and an instance record. The file systems are
149 * put on a doubly linked list.
150 *
151 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
152 * are linked into mnt_nvnodelist. At some point in the near future the
153 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
154 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
155 * list. Filesystem kld's syncing code should remain compatible since
156 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 157 *
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158 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
159 * only take namecache pointers will not be able to find their operations
160 * vector via namecache->nc_mount.
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161 *
162 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
163 *
164 * mnt_token interlocks operations which adjust the mount
165 * structure and will also be held through VFS operations
166 * for VFSes not flagged MPSAFE.
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167 */
168TAILQ_HEAD(vnodelst, vnode);
2281065e 169TAILQ_HEAD(journallst, journal);
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170
171struct mount {
172 TAILQ_ENTRY(mount) mnt_list; /* mount list */
173 struct vfsops *mnt_op; /* operations on fs */
174 struct vfsconf *mnt_vfc; /* configuration info */
4b5bbb78 175 long mnt_namecache_gen; /* ++ to clear negative hits */
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176 struct vnode *mnt_syncer; /* syncer vnode */
177 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
178 struct lock mnt_lock; /* mount structure lock */
179 int mnt_flag; /* flags shared with user */
180 int mnt_kern_flag; /* kernel only flags */
181 int mnt_maxsymlinklen; /* max size of short symlink */
182 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 183 struct statvfs mnt_vstat; /* extended stats */
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184 qaddr_t mnt_data; /* private data */
185 time_t mnt_time; /* last time written*/
186 u_int mnt_iosize_max; /* max IO request size */
187 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
188 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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189
190 /*
191 * ops vectors have a fixed stacking order. All primary calls run
192 * through mnt_vn_ops. This field is typically assigned to
193 * mnt_vn_norm_ops. If journaling has been enabled this field is
194 * usually assigned to mnt_vn_journal_ops.
195 */
196 struct vop_ops *mnt_vn_use_ops; /* current ops set */
197
198 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
199 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
200 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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201 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
202 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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203 struct nchandle mnt_ncmountpt; /* mount point */
204 struct nchandle mnt_ncmounton; /* mounted on */
205 int mnt_refs; /* nchandle references */
aac0aabd 206 struct lwkt_token mnt_token; /* token lock if not MPSAFE */
2281065e 207 struct journallst mnt_jlist; /* list of active journals */
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208 u_int8_t *mnt_jbitmap; /* streamid bitmap */
209 int16_t mnt_streamid; /* last streamid */
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210
211 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 212};
2281065e 213
ec12abe0 214#endif /* _KERNEL || _KERNEL_STRUCTURES */
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215
216/*
217 * User specifiable flags.
218 */
219#define MNT_RDONLY 0x00000001 /* read only filesystem */
220#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
221#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
222#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
223#define MNT_NODEV 0x00000010 /* don't interpret special files */
224#define MNT_UNION 0x00000020 /* union with underlying filesystem */
225#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
226#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
227#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
228#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
e0fb398b 229#define MNT_TRIM 0x01000000 /* Enable online FS trimming */
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230#define MNT_NOATIME 0x10000000 /* disable update of file access time */
231#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
232#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
233
234/*
235 * NFS export related mount flags.
236 */
237#define MNT_EXRDONLY 0x00000080 /* exported read only */
238#define MNT_EXPORTED 0x00000100 /* file system is exported */
239#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
240#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
241#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
242#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
243
244/*
245 * Flags set by internal operations,
246 * but visible to the user.
247 * XXX some of these are not quite right.. (I've never seen the root flag set)
248 */
249#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
250#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
251#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
252#define MNT_USER 0x00008000 /* mounted by a user */
253#define MNT_IGNORE 0x00800000 /* do not show entry in df */
254
255/*
256 * Mask of flags that are visible to statfs()
257 * XXX I think that this could now become (~(MNT_CMDFLAGS))
258 * but the 'mount' program may need changing to handle this.
259 */
260#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
261 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
262 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
263 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
264 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
265 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
266 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
e0fb398b 267 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC | MNT_TRIM)
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268/*
269 * External filesystem command modifier flags.
270 * Unmount can use the MNT_FORCE flag.
271 * XXX These are not STATES and really should be somewhere else.
272 */
273#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
274#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
275#define MNT_RELOAD 0x00040000 /* reload filesystem data */
276#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
277#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
278/*
279 * Internal filesystem control flags stored in mnt_kern_flag.
280 *
281 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
282 * past the mount point. This keeps the subtree stable during mounts
283 * and unmounts.
284 *
285 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
286 * dounmount() is still waiting to lock the mountpoint. This allows
287 * the filesystem to cancel operations that might otherwise deadlock
288 * with the unmount attempt (used by NFS).
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289 *
290 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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291 */
292#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
aac0aabd 293#define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
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294#define MNTK_RD_MPSAFE 0x00020000 /* vop_read is MPSAFE */
295#define MNTK_WR_MPSAFE 0x00040000 /* vop_write is MPSAFE */
296#define MNTK_GA_MPSAFE 0x00080000 /* vop_getattr is MPSAFE */
297#define MNTK_IN_MPSAFE 0x00100000 /* vop_inactive is MPSAFE */
7a2de9a4 298#define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
28623bf9 299#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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300#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
301#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
302#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 303#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 304#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
2bc7505b 305#define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
984263bc 306
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307#define MNTK_ALL_MPSAFE (MNTK_MPSAFE | MNTK_RD_MPSAFE | MNTK_WR_MPSAFE | \
308 MNTK_GA_MPSAFE | MNTK_IN_MPSAFE | MNTK_SG_MPSAFE)
309
984263bc 310/*
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311 * mountlist_*() defines
312 */
313#define MNTSCAN_FORWARD 0x0001
314#define MNTSCAN_REVERSE 0x0002
315#define MNTSCAN_NOBUSY 0x0004
316
317#define MNTINS_FIRST 0x0001
318#define MNTINS_LAST 0x0002
319
320/*
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321 * Sysctl CTL_VFS definitions.
322 *
323 * Second level identifier specifies which filesystem. Second level
324 * identifier VFS_VFSCONF returns information about all filesystems.
325 * Second level identifier VFS_GENERIC is non-terminal.
326 */
327#define VFS_VFSCONF 0 /* get configured filesystems */
328#define VFS_GENERIC 0 /* generic filesystem information */
329/*
330 * Third level identifiers for VFS_GENERIC are given below; third
331 * level identifiers for specific filesystems are given in their
332 * mount specific header files.
333 */
334#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
335#define VFS_CONF 2 /* struct: vfsconf for filesystem given
336 as next argument */
337
338/*
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339 * VFS MPLOCK helper.
340 */
3b998fa9 341#define VFS_MPLOCK_DECLARE int xlock_mpsafe
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342
343#define VFS_MPLOCK1(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
344
345#define VFS_MPLOCK2(mp) \
346 do { \
347 if (xlock_mpsafe) { \
348 get_mplock(); /* TEMPORARY */ \
3b998fa9 349 lwkt_gettoken(&mp->mnt_token); \
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350 xlock_mpsafe = 0; \
351 } \
352 } while(0)
353
354#define VFS_MPLOCK_FLAG(mp, flag) \
355 do { \
356 if (mp->mnt_kern_flag & flag) { \
357 xlock_mpsafe = 1; \
358 } else { \
359 get_mplock(); /* TEMPORARY */ \
3b998fa9 360 lwkt_gettoken(&mp->mnt_token); \
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361 xlock_mpsafe = 0; \
362 } \
363 } while(0)
364
365#define VFS_MPUNLOCK(mp) \
366 do { \
367 if (xlock_mpsafe == 0) { \
3b998fa9 368 lwkt_reltoken(&mp->mnt_token); \
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369 rel_mplock(); /* TEMPORARY */ \
370 } \
371 } while(0)
372
373/*
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374 * Flags for various system call interfaces.
375 *
376 * waitfor flags to vfs_sync() and getfsstat()
377 */
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378#define MNT_WAIT 0x0001 /* synchronously wait for I/O to complete */
379#define MNT_NOWAIT 0x0002 /* start all I/O, but do not wait for it */
380#define MNT_LAZY 0x0004 /* be lazy and do not necessarily push it all */
984263bc 381
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382#define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
383
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384/*
385 * Generic file handle
386 */
387struct fhandle {
388 fsid_t fh_fsid; /* File system id of mount point */
389 struct fid fh_fid; /* File sys specific id */
390};
391typedef struct fhandle fhandle_t;
392
393/*
394 * Export arguments for local filesystem mount calls.
395 */
396struct export_args {
397 int ex_flags; /* export related flags */
398 uid_t ex_root; /* mapping for root uid */
399 struct ucred ex_anon; /* mapping for anonymous user */
400 struct sockaddr *ex_addr; /* net address to which exported */
401 int ex_addrlen; /* and the net address length */
402 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
403 int ex_masklen; /* and the smask length */
404 char *ex_indexfile; /* index file for WebNFS URLs */
405};
406
407/*
408 * Structure holding information for a publicly exported filesystem
409 * (WebNFS). Currently the specs allow just for one such filesystem.
410 */
411struct nfs_public {
412 int np_valid; /* Do we hold valid information */
413 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
414 struct mount *np_mount; /* Mountpoint of exported fs */
415 char *np_index; /* Index file */
416};
417
418/*
419 * Filesystem configuration information. One of these exists for each
420 * type of filesystem supported by the kernel. These are searched at
421 * mount time to identify the requested filesystem.
422 */
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423#ifndef _SYS_QUEUE_H_
424#include <sys/queue.h>
425#endif
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426struct vfsconf {
427 struct vfsops *vfc_vfsops; /* filesystem operations vector */
428 char vfc_name[MFSNAMELEN]; /* filesystem type name */
429 int vfc_typenum; /* historic filesystem type number */
430 int vfc_refcount; /* number mounted of this type */
431 int vfc_flags; /* permanent flags */
2613053d 432 STAILQ_ENTRY(vfsconf) vfc_next; /* next in list */
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433};
434
435struct ovfsconf {
436 void *vfc_vfsops;
437 char vfc_name[32];
438 int vfc_index;
439 int vfc_refcount;
440 int vfc_flags;
441};
442
443/*
444 * NB: these flags refer to IMPLEMENTATION properties, not properties of
445 * any actual mounts; i.e., it does not make sense to change the flags.
446 */
447#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
448#define VFCF_NETWORK 0x00020000 /* may get data over the network */
449#define VFCF_READONLY 0x00040000 /* writes are not implemented */
450#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
451#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
452#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
453
454#ifdef _KERNEL
455
456#ifdef MALLOC_DECLARE
457MALLOC_DECLARE(M_MOUNT);
458#endif
984263bc 459extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
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460
461struct vfsconf *vfsconf_find_by_name(const char *);
462struct vfsconf *vfsconf_find_by_typenum(int);
463int vfsconf_get_maxtypenum(void);
464int vfsconf_each(int (*)(struct vfsconf *, void *), void *);
984263bc 465
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466#endif
467
468#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
469
470TAILQ_HEAD(mntlist, mount); /* struct mntlist */
471
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472/*
473 * Operations supported on mounted file system.
474 */
475#ifdef __STDC__
21739618 476struct nlookupdata;
fad57d0e 477struct nlookupdata;
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478struct mbuf;
479#endif
480
43c45e8f 481typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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482 struct ucred *cred);
483typedef int vfs_start_t(struct mount *mp, int flags);
484typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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485typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
486typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 487 struct ucred *cred);
43c45e8f 488typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 489 struct ucred *cred);
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490typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
491 struct ucred *cred);
87de5057 492typedef int vfs_sync_t(struct mount *mp, int waitfor);
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493typedef int vfs_vget_t(struct mount *mp, struct vnode *dvp,
494 ino_t ino, struct vnode **vpp);
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495typedef int vfs_fhtovp_t(struct mount *mp, struct vnode *rootvp,
496 struct fid *fhp, struct vnode **vpp);
43c45e8f 497typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 498 int *extflagsp, struct ucred **credanonp);
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499typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
500typedef int vfs_init_t(struct vfsconf *);
501typedef int vfs_uninit_t(struct vfsconf *);
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502typedef int vfs_extattrctl_t(struct mount *mp, int cmd, struct vnode *vp,
503 int attrnamespace, const char *attrname,
504 struct ucred *cred);
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505typedef int vfs_acinit_t(struct mount *mp);
506typedef int vfs_acdone_t(struct mount *mp);
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507typedef int vfs_account_t(struct mount *mp,
508 uid_t uid, gid_t gid, int64_t delta);
43c45e8f 509
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510int vfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred);
511int vfs_start(struct mount *mp, int flags);
512int vfs_unmount(struct mount *mp, int mntflags);
513int vfs_root(struct mount *mp, struct vnode **vpp);
514int vfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
515 struct ucred *cred);
516int vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred);
517int vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred);
518int vfs_sync(struct mount *mp, int waitfor);
519int vfs_vget(struct mount *mp, struct vnode *dvp,
520 ino_t ino, struct vnode **vpp);
521int vfs_fhtovp(struct mount *mp, struct vnode *rootvp,
522 struct fid *fhp, struct vnode **vpp);
523int vfs_checkexp(struct mount *mp, struct sockaddr *nam,
524 int *extflagsp, struct ucred **credanonp);
525int vfs_vptofh(struct vnode *vp, struct fid *fhp);
526int vfs_init(struct vfsconf *vfc);
527int vfs_uninit(struct vfsconf *vfc, struct vfsconf *vfsp);
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528int vfs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
529 int attrnamespace, const char *attrname,
530 struct ucred *cred);
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531
532
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533struct vfsops {
534 vfs_mount_t *vfs_mount;
535 vfs_start_t *vfs_start;
536 vfs_unmount_t *vfs_unmount;
537 vfs_root_t *vfs_root;
538 vfs_quotactl_t *vfs_quotactl;
539 vfs_statfs_t *vfs_statfs;
540 vfs_sync_t *vfs_sync;
541 vfs_vget_t *vfs_vget;
542 vfs_fhtovp_t *vfs_fhtovp;
543 vfs_checkexp_t *vfs_checkexp;
544 vfs_vptofh_t *vfs_vptofh;
545 vfs_init_t *vfs_init;
546 vfs_uninit_t *vfs_uninit;
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547 vfs_extattrctl_t *vfs_extattrctl;
548 vfs_statvfs_t *vfs_statvfs;
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549 vfs_acinit_t *vfs_acinit;
550 vfs_acdone_t *vfs_acdone;
1c18cfd0 551 vfs_account_t *vfs_account;
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552};
553
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554#define VFS_MOUNT(MP, PATH, DATA, CRED) \
555 vfs_mount(MP, PATH, DATA, CRED)
556#define VFS_START(MP, FLAGS) \
557 vfs_start(MP, FLAGS)
558#define VFS_UNMOUNT(MP, FORCE) \
559 vfs_unmount(MP, FORCE)
560#define VFS_ROOT(MP, VPP) \
561 vfs_root(MP, VPP)
562#define VFS_QUOTACTL(MP, C, U, A, CRED) \
563 vfs_quotactl(MP, C, U, A, CRED)
564#define VFS_STATFS(MP, SBP, CRED) \
565 vfs_statfs(MP, SBP, CRED)
566#define VFS_STATVFS(MP, SBP, CRED) \
567 vfs_statvfs(MP, SBP, CRED)
568#define VFS_SYNC(MP, WAIT) \
569 vfs_sync(MP, WAIT)
570#define VFS_VGET(MP, DVP, INO, VPP) \
571 vfs_vget(MP, DVP, INO, VPP)
67863d04 572#define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
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573 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
574#define VFS_VPTOFH(VP, FIDP) \
575 vfs_vptofh(VP, FIDP)
576#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
577 vfs_checkexp(MP, NAM, EXFLG, CRED)
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578#define VFS_EXTATTRCTL(MP, C, FVP, NS, N, CRED) \
579 vfs_extattrctl(MP, C, FVP, NS, N, CRED)
984263bc 580
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581#endif
582
583#ifdef _KERNEL
584
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585#include <sys/module.h>
586
587#define VFS_SET(vfsops, fsname, flags) \
588 static struct vfsconf fsname ## _vfsconf = { \
589 &vfsops, \
590 #fsname, \
591 -1, \
592 0, \
58661e79 593 flags, \
37c1c8fc 594 { NULL }, \
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595 }; \
596 static moduledata_t fsname ## _mod = { \
597 #fsname, \
598 vfs_modevent, \
599 & fsname ## _vfsconf \
600 }; \
601 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
602
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603#endif
604
605#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
606
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607#include <net/radix.h>
608
fbb5a20f 609#define AF_MAX 36 /* XXX */
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610
611/*
612 * Network address lookup element
613 */
614struct netcred {
615 struct radix_node netc_rnodes[2];
616 int netc_exflags;
617 struct ucred netc_anon;
618};
619
620/*
621 * Network export information
622 */
623struct netexport {
624 struct netcred ne_defexported; /* Default export */
625 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
626};
627
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628#endif
629
630#ifdef _KERNEL
631
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632extern char *mountrootfsname;
633
634/*
635 * exported vnode operations
636 */
acde96db 637int dounmount (struct mount *, int);
984263bc 638int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 639 (struct mount *, struct netexport *, const struct export_args *);
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640int vfs_lock (struct mount *); /* lock a vfs */
641void vfs_msync (struct mount *, int);
642void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 643int vfs_busy (struct mount *, int);
6bdbb368 644void vfs_bufstats(void);
984263bc 645int vfs_export /* process mount export info */
1aa89f17 646 (struct mount *, struct netexport *, const struct export_args *);
984263bc 647struct netcred *vfs_export_lookup /* lookup host in fs export list */
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648 (struct mount *, struct netexport *, struct sockaddr *);
649int vfs_allocate_syncvnode (struct mount *);
650void vfs_getnewfsid (struct mount *);
67863d04 651int vfs_setfsid(struct mount *mp, fsid_t *template);
b13267a5 652cdev_t vfs_getrootfsid (struct mount *);
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653struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
654int vfs_modevent (module_t, int, void *);
655int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
656int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 657void vfs_unbusy (struct mount *);
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658void vfs_unmountall (void);
659int vfs_register (struct vfsconf *);
660int vfs_unregister (struct vfsconf *);
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661extern struct nfs_public nfs_pub;
662
663/*
664 * Declarations for these vfs default operations are located in
665 * kern/vfs_default.c, they should be used instead of making "dummy"
666 * functions or casting entries in the VFS op table to "enopnotsupp()".
667 */
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668vfs_start_t vfs_stdstart;
669vfs_mount_t vfs_stdmount;
670vfs_unmount_t vfs_stdunmount;
671vfs_root_t vfs_stdroot;
672vfs_quotactl_t vfs_stdquotactl;
673vfs_statfs_t vfs_stdstatfs;
d9fad06e 674vfs_statvfs_t vfs_stdstatvfs;
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675vfs_sync_t vfs_stdsync;
676vfs_sync_t vfs_stdnosync;
677vfs_vget_t vfs_stdvget;
678vfs_fhtovp_t vfs_stdfhtovp;
679vfs_checkexp_t vfs_stdcheckexp;
680vfs_vptofh_t vfs_stdvptofh;
681vfs_init_t vfs_stdinit;
682vfs_uninit_t vfs_stduninit;
acde96db 683vfs_extattrctl_t vfs_stdextattrctl;
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684vfs_acinit_t vfs_stdac_init;
685vfs_acdone_t vfs_stdac_done;
1c18cfd0 686vfs_account_t vfs_stdaccount;
e788edda 687vfs_account_t vfs_noaccount;
43c45e8f 688
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689struct vop_access_args;
690int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 691 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 692int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
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693 uid_t uid, struct ucred *cred);
694uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
695 struct ucred *cred, mode_t *modep);
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696int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
697 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
698int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
699 struct ucred *cred,
700 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 701
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702void add_bio_ops(struct bio_ops *ops);
703void rem_bio_ops(struct bio_ops *ops);
9340415c 704
2281065e 705int journal_mountctl(struct vop_mountctl_args *ap);
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706void journal_remove_all_journals(struct mount *mp, int flags);
707
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708void mountlist_insert(struct mount *, int);
709int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
710struct mount *mountlist_boot_getfirst(void);
711void mountlist_remove(struct mount *mp);
712int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
5b4cfb7e 713struct mount *mount_get_by_nc(struct namecache *ncp);
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714#else /* !_KERNEL */
715
716#include <sys/cdefs.h>
717
718__BEGIN_DECLS
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719int fstatfs (int, struct statfs *);
720int getfh (const char *, fhandle_t *);
721int getfsstat (struct statfs *, long, int);
722int getmntinfo (struct statfs **, int);
0e735c8f 723int getmntvinfo (struct statfs **, struct statvfs **, int);
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724int mount (const char *, const char *, int, void *);
725int statfs (const char *, struct statfs *);
726int unmount (const char *, int);
727int fhopen (const struct fhandle *, int);
728int fhstat (const struct fhandle *, struct stat *);
729int fhstatfs (const struct fhandle *, struct statfs *);
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730
731/* C library stuff */
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732void endvfsent (void);
733struct ovfsconf *getvfsbyname (const char *);
734struct ovfsconf *getvfsbytype (int);
735struct ovfsconf *getvfsent (void);
984263bc 736#define getvfsbyname new_getvfsbyname
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737int new_getvfsbyname (const char *, struct vfsconf *);
738void setvfsent (int);
739int vfsisloadable (const char *);
740int vfsload (const char *);
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741__END_DECLS
742
743#endif /* _KERNEL */
744
745#endif /* !_SYS_MOUNT_H_ */
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