kernel - Fix missing chain wait
[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 $
35 */
36
37#ifndef _SYS_MOUNT_H_
38#define _SYS_MOUNT_H_
39
40#include <sys/ucred.h>
95bf5f78 41#include <sys/tree.h>
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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#endif
147
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148/*
149 * storage accounting
150 *
151 * uids and gids often come in contiguous blocks; use a small linear
152 * array as the basic in-memory accounting allocation unit
153 */
154#define ACCT_CHUNK_BITS 5
155#define ACCT_CHUNK_NIDS (1<<ACCT_CHUNK_BITS)
156#define ACCT_CHUNK_MASK (ACCT_CHUNK_NIDS - 1)
157
158struct ac_unode {
159 RB_ENTRY(ac_unode) rb_entry;
160 uid_t left_bits;
161 uint64_t uid_chunk[ACCT_CHUNK_NIDS];
162};
163
164struct ac_gnode {
165 RB_ENTRY(ac_gnode) rb_entry;
166 gid_t left_bits;
167 uint64_t gid_chunk[ACCT_CHUNK_NIDS];
168};
169
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170#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
171
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172struct vfs_acct {
173 RB_HEAD(ac_utree,ac_unode) ac_uroot;
174 RB_HEAD(ac_gtree,ac_gnode) ac_groot;
175 uint64_t ac_bytes; /* total bytes used */
176 struct spinlock ac_spin; /* protective spinlock */
177};
178
179
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180/*
181 * Structure per mounted file system. Each mounted file system has an
182 * array of operations and an instance record. The file systems are
183 * put on a doubly linked list.
184 *
185 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
186 * are linked into mnt_nvnodelist. At some point in the near future the
187 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
188 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
189 * list. Filesystem kld's syncing code should remain compatible since
190 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 191 *
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192 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
193 * only take namecache pointers will not be able to find their operations
194 * vector via namecache->nc_mount.
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195 *
196 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
197 *
198 * mnt_token interlocks operations which adjust the mount
199 * structure and will also be held through VFS operations
200 * for VFSes not flagged MPSAFE.
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201 */
202TAILQ_HEAD(vnodelst, vnode);
2281065e 203TAILQ_HEAD(journallst, journal);
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204
205struct mount {
206 TAILQ_ENTRY(mount) mnt_list; /* mount list */
207 struct vfsops *mnt_op; /* operations on fs */
208 struct vfsconf *mnt_vfc; /* configuration info */
4b5bbb78 209 long mnt_namecache_gen; /* ++ to clear negative hits */
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210 struct vnode *mnt_syncer; /* syncer vnode */
211 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
212 struct lock mnt_lock; /* mount structure lock */
213 int mnt_flag; /* flags shared with user */
214 int mnt_kern_flag; /* kernel only flags */
215 int mnt_maxsymlinklen; /* max size of short symlink */
216 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 217 struct statvfs mnt_vstat; /* extended stats */
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218 qaddr_t mnt_data; /* private data */
219 time_t mnt_time; /* last time written*/
220 u_int mnt_iosize_max; /* max IO request size */
221 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
222 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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223
224 /*
225 * ops vectors have a fixed stacking order. All primary calls run
226 * through mnt_vn_ops. This field is typically assigned to
227 * mnt_vn_norm_ops. If journaling has been enabled this field is
228 * usually assigned to mnt_vn_journal_ops.
229 */
230 struct vop_ops *mnt_vn_use_ops; /* current ops set */
231
232 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
233 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
234 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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235 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
236 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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237 struct nchandle mnt_ncmountpt; /* mount point */
238 struct nchandle mnt_ncmounton; /* mounted on */
239 int mnt_refs; /* nchandle references */
aac0aabd 240 struct lwkt_token mnt_token; /* token lock if not MPSAFE */
2281065e 241 struct journallst mnt_jlist; /* list of active journals */
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242 u_int8_t *mnt_jbitmap; /* streamid bitmap */
243 int16_t mnt_streamid; /* last streamid */
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244
245 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
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246
247 struct vfs_acct mnt_acct; /* vfs space accounting */
984263bc 248};
2281065e 249
ec12abe0 250#endif /* _KERNEL || _KERNEL_STRUCTURES */
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251
252/*
253 * User specifiable flags.
254 */
255#define MNT_RDONLY 0x00000001 /* read only filesystem */
256#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
257#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
258#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
259#define MNT_NODEV 0x00000010 /* don't interpret special files */
260#define MNT_UNION 0x00000020 /* union with underlying filesystem */
261#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
262#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
263#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
264#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
e0fb398b 265#define MNT_TRIM 0x01000000 /* Enable online FS trimming */
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266#define MNT_NOATIME 0x10000000 /* disable update of file access time */
267#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
268#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
269
270/*
271 * NFS export related mount flags.
272 */
273#define MNT_EXRDONLY 0x00000080 /* exported read only */
274#define MNT_EXPORTED 0x00000100 /* file system is exported */
275#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
276#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
277#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
278#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
279
280/*
281 * Flags set by internal operations,
282 * but visible to the user.
283 * XXX some of these are not quite right.. (I've never seen the root flag set)
284 */
285#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
286#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
287#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
288#define MNT_USER 0x00008000 /* mounted by a user */
a3dce641 289#define MNT_ACCOUNTING 0x00020000 /* accounting is enabled on filesystem */
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290#define MNT_IGNORE 0x00800000 /* do not show entry in df */
291
292/*
293 * Mask of flags that are visible to statfs()
294 * XXX I think that this could now become (~(MNT_CMDFLAGS))
295 * but the 'mount' program may need changing to handle this.
296 */
297#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
298 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
299 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
300 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
301 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
302 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
303 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
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304 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC| \
305 MNT_ACCOUNTING | MNT_TRIM)
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306/*
307 * External filesystem command modifier flags.
308 * Unmount can use the MNT_FORCE flag.
309 * XXX These are not STATES and really should be somewhere else.
310 */
311#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
312#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
313#define MNT_RELOAD 0x00040000 /* reload filesystem data */
314#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
315#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
316/*
317 * Internal filesystem control flags stored in mnt_kern_flag.
318 *
319 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
320 * past the mount point. This keeps the subtree stable during mounts
321 * and unmounts.
322 *
323 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
324 * dounmount() is still waiting to lock the mountpoint. This allows
325 * the filesystem to cancel operations that might otherwise deadlock
326 * with the unmount attempt (used by NFS).
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327 *
328 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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329 */
330#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
aac0aabd 331#define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
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332#define MNTK_RD_MPSAFE 0x00020000 /* vop_read is MPSAFE */
333#define MNTK_WR_MPSAFE 0x00040000 /* vop_write is MPSAFE */
334#define MNTK_GA_MPSAFE 0x00080000 /* vop_getattr is MPSAFE */
335#define MNTK_IN_MPSAFE 0x00100000 /* vop_inactive is MPSAFE */
7a2de9a4 336#define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
28623bf9 337#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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338#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
339#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
340#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 341#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 342#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
2bc7505b 343#define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
984263bc 344
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345#define MNTK_ALL_MPSAFE (MNTK_MPSAFE | MNTK_RD_MPSAFE | MNTK_WR_MPSAFE | \
346 MNTK_GA_MPSAFE | MNTK_IN_MPSAFE | MNTK_SG_MPSAFE)
347
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348/*
349 * mountlist_*() defines
350 */
351#define MNTSCAN_FORWARD 0x0001
352#define MNTSCAN_REVERSE 0x0002
353#define MNTSCAN_NOBUSY 0x0004
354
355#define MNTINS_FIRST 0x0001
356#define MNTINS_LAST 0x0002
357
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358/*
359 * Sysctl CTL_VFS definitions.
360 *
361 * Second level identifier specifies which filesystem. Second level
362 * identifier VFS_VFSCONF returns information about all filesystems.
363 * Second level identifier VFS_GENERIC is non-terminal.
364 */
365#define VFS_VFSCONF 0 /* get configured filesystems */
366#define VFS_GENERIC 0 /* generic filesystem information */
367/*
368 * Third level identifiers for VFS_GENERIC are given below; third
369 * level identifiers for specific filesystems are given in their
370 * mount specific header files.
371 */
372#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
373#define VFS_CONF 2 /* struct: vfsconf for filesystem given
374 as next argument */
375
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376/*
377 * VFS MPLOCK helper.
378 */
3b998fa9 379#define VFS_MPLOCK_DECLARE int xlock_mpsafe
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380
381#define VFS_MPLOCK1(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
382
383#define VFS_MPLOCK2(mp) \
384 do { \
385 if (xlock_mpsafe) { \
386 get_mplock(); /* TEMPORARY */ \
3b998fa9 387 lwkt_gettoken(&mp->mnt_token); \
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388 xlock_mpsafe = 0; \
389 } \
390 } while(0)
391
392#define VFS_MPLOCK_FLAG(mp, flag) \
393 do { \
394 if (mp->mnt_kern_flag & flag) { \
395 xlock_mpsafe = 1; \
396 } else { \
397 get_mplock(); /* TEMPORARY */ \
3b998fa9 398 lwkt_gettoken(&mp->mnt_token); \
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399 xlock_mpsafe = 0; \
400 } \
401 } while(0)
402
403#define VFS_MPUNLOCK(mp) \
404 do { \
405 if (xlock_mpsafe == 0) { \
3b998fa9 406 lwkt_reltoken(&mp->mnt_token); \
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407 rel_mplock(); /* TEMPORARY */ \
408 } \
409 } while(0)
410
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411/*
412 * Flags for various system call interfaces.
413 *
414 * waitfor flags to vfs_sync() and getfsstat()
415 */
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416#define MNT_WAIT 0x0001 /* synchronously wait for I/O to complete */
417#define MNT_NOWAIT 0x0002 /* start all I/O, but do not wait for it */
418#define MNT_LAZY 0x0004 /* be lazy and do not necessarily push it all */
984263bc 419
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420#define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
421
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422/*
423 * Generic file handle
424 */
425struct fhandle {
426 fsid_t fh_fsid; /* File system id of mount point */
427 struct fid fh_fid; /* File sys specific id */
428};
429typedef struct fhandle fhandle_t;
430
431/*
432 * Export arguments for local filesystem mount calls.
433 */
434struct export_args {
435 int ex_flags; /* export related flags */
436 uid_t ex_root; /* mapping for root uid */
437 struct ucred ex_anon; /* mapping for anonymous user */
438 struct sockaddr *ex_addr; /* net address to which exported */
439 int ex_addrlen; /* and the net address length */
440 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
441 int ex_masklen; /* and the smask length */
442 char *ex_indexfile; /* index file for WebNFS URLs */
443};
444
445/*
446 * Structure holding information for a publicly exported filesystem
447 * (WebNFS). Currently the specs allow just for one such filesystem.
448 */
449struct nfs_public {
450 int np_valid; /* Do we hold valid information */
451 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
452 struct mount *np_mount; /* Mountpoint of exported fs */
453 char *np_index; /* Index file */
454};
455
456/*
457 * Filesystem configuration information. One of these exists for each
458 * type of filesystem supported by the kernel. These are searched at
459 * mount time to identify the requested filesystem.
460 */
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461#ifndef _SYS_QUEUE_H_
462#include <sys/queue.h>
463#endif
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464struct vfsconf {
465 struct vfsops *vfc_vfsops; /* filesystem operations vector */
466 char vfc_name[MFSNAMELEN]; /* filesystem type name */
467 int vfc_typenum; /* historic filesystem type number */
468 int vfc_refcount; /* number mounted of this type */
469 int vfc_flags; /* permanent flags */
2613053d 470 STAILQ_ENTRY(vfsconf) vfc_next; /* next in list */
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471};
472
473struct ovfsconf {
474 void *vfc_vfsops;
475 char vfc_name[32];
476 int vfc_index;
477 int vfc_refcount;
478 int vfc_flags;
479};
480
481/*
482 * NB: these flags refer to IMPLEMENTATION properties, not properties of
483 * any actual mounts; i.e., it does not make sense to change the flags.
484 */
485#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
486#define VFCF_NETWORK 0x00020000 /* may get data over the network */
487#define VFCF_READONLY 0x00040000 /* writes are not implemented */
488#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
489#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
490#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
491
492#ifdef _KERNEL
493
494#ifdef MALLOC_DECLARE
495MALLOC_DECLARE(M_MOUNT);
496#endif
984263bc 497extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
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498
499struct vfsconf *vfsconf_find_by_name(const char *);
500struct vfsconf *vfsconf_find_by_typenum(int);
501int vfsconf_get_maxtypenum(void);
502int vfsconf_each(int (*)(struct vfsconf *, void *), void *);
984263bc 503
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504#endif
505
506#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
507
508TAILQ_HEAD(mntlist, mount); /* struct mntlist */
509
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510/*
511 * Operations supported on mounted file system.
512 */
21739618 513struct nlookupdata;
fad57d0e 514struct nlookupdata;
984263bc 515struct mbuf;
984263bc 516
43c45e8f 517typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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518 struct ucred *cred);
519typedef int vfs_start_t(struct mount *mp, int flags);
520typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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521typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
522typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 523 struct ucred *cred);
43c45e8f 524typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 525 struct ucred *cred);
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526typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
527 struct ucred *cred);
87de5057 528typedef int vfs_sync_t(struct mount *mp, int waitfor);
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529typedef int vfs_vget_t(struct mount *mp, struct vnode *dvp,
530 ino_t ino, struct vnode **vpp);
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531typedef int vfs_fhtovp_t(struct mount *mp, struct vnode *rootvp,
532 struct fid *fhp, struct vnode **vpp);
43c45e8f 533typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 534 int *extflagsp, struct ucred **credanonp);
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535typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
536typedef int vfs_init_t(struct vfsconf *);
537typedef int vfs_uninit_t(struct vfsconf *);
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538typedef int vfs_extattrctl_t(struct mount *mp, int cmd, struct vnode *vp,
539 int attrnamespace, const char *attrname,
540 struct ucred *cred);
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541typedef int vfs_acinit_t(struct mount *mp);
542typedef int vfs_acdone_t(struct mount *mp);
95bf5f78 543typedef void vfs_account_t(struct mount *mp,
1c18cfd0 544 uid_t uid, gid_t gid, int64_t delta);
43c45e8f 545
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546int vfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred);
547int vfs_start(struct mount *mp, int flags);
548int vfs_unmount(struct mount *mp, int mntflags);
549int vfs_root(struct mount *mp, struct vnode **vpp);
550int vfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
551 struct ucred *cred);
552int vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred);
553int vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred);
554int vfs_sync(struct mount *mp, int waitfor);
555int vfs_vget(struct mount *mp, struct vnode *dvp,
556 ino_t ino, struct vnode **vpp);
557int vfs_fhtovp(struct mount *mp, struct vnode *rootvp,
558 struct fid *fhp, struct vnode **vpp);
559int vfs_checkexp(struct mount *mp, struct sockaddr *nam,
560 int *extflagsp, struct ucred **credanonp);
561int vfs_vptofh(struct vnode *vp, struct fid *fhp);
562int vfs_init(struct vfsconf *vfc);
563int vfs_uninit(struct vfsconf *vfc, struct vfsconf *vfsp);
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564int vfs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
565 int attrnamespace, const char *attrname,
566 struct ucred *cred);
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567
568
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569struct vfsops {
570 vfs_mount_t *vfs_mount;
571 vfs_start_t *vfs_start;
572 vfs_unmount_t *vfs_unmount;
573 vfs_root_t *vfs_root;
574 vfs_quotactl_t *vfs_quotactl;
575 vfs_statfs_t *vfs_statfs;
576 vfs_sync_t *vfs_sync;
577 vfs_vget_t *vfs_vget;
578 vfs_fhtovp_t *vfs_fhtovp;
579 vfs_checkexp_t *vfs_checkexp;
580 vfs_vptofh_t *vfs_vptofh;
581 vfs_init_t *vfs_init;
582 vfs_uninit_t *vfs_uninit;
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583 vfs_extattrctl_t *vfs_extattrctl;
584 vfs_statvfs_t *vfs_statvfs;
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585 vfs_acinit_t *vfs_acinit;
586 vfs_acdone_t *vfs_acdone;
1c18cfd0 587 vfs_account_t *vfs_account;
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588};
589
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590#define VFS_MOUNT(MP, PATH, DATA, CRED) \
591 vfs_mount(MP, PATH, DATA, CRED)
592#define VFS_START(MP, FLAGS) \
593 vfs_start(MP, FLAGS)
594#define VFS_UNMOUNT(MP, FORCE) \
595 vfs_unmount(MP, FORCE)
596#define VFS_ROOT(MP, VPP) \
597 vfs_root(MP, VPP)
598#define VFS_QUOTACTL(MP, C, U, A, CRED) \
599 vfs_quotactl(MP, C, U, A, CRED)
600#define VFS_STATFS(MP, SBP, CRED) \
601 vfs_statfs(MP, SBP, CRED)
602#define VFS_STATVFS(MP, SBP, CRED) \
603 vfs_statvfs(MP, SBP, CRED)
604#define VFS_SYNC(MP, WAIT) \
605 vfs_sync(MP, WAIT)
606#define VFS_VGET(MP, DVP, INO, VPP) \
607 vfs_vget(MP, DVP, INO, VPP)
67863d04 608#define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
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609 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
610#define VFS_VPTOFH(VP, FIDP) \
611 vfs_vptofh(VP, FIDP)
612#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
613 vfs_checkexp(MP, NAM, EXFLG, CRED)
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614#define VFS_EXTATTRCTL(MP, C, FVP, NS, N, CRED) \
615 vfs_extattrctl(MP, C, FVP, NS, N, CRED)
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616#define VFS_ACCOUNT(MP, U, G, D) \
617 if (MP->mnt_op->vfs_account != NULL) \
618 MP->mnt_op->vfs_account(MP, U, G, D);
984263bc 619
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620#endif
621
622#ifdef _KERNEL
623
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624#include <sys/module.h>
625
626#define VFS_SET(vfsops, fsname, flags) \
627 static struct vfsconf fsname ## _vfsconf = { \
628 &vfsops, \
629 #fsname, \
630 -1, \
631 0, \
58661e79 632 flags, \
37c1c8fc 633 { NULL }, \
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634 }; \
635 static moduledata_t fsname ## _mod = { \
636 #fsname, \
637 vfs_modevent, \
638 & fsname ## _vfsconf \
639 }; \
640 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
641
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642#endif
643
644#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
645
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646#include <net/radix.h>
647
fbb5a20f 648#define AF_MAX 36 /* XXX */
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649
650/*
651 * Network address lookup element
652 */
653struct netcred {
654 struct radix_node netc_rnodes[2];
655 int netc_exflags;
656 struct ucred netc_anon;
657};
658
659/*
660 * Network export information
661 */
662struct netexport {
663 struct netcred ne_defexported; /* Default export */
664 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
665};
666
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667#endif
668
669#ifdef _KERNEL
670
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671extern char *mountrootfsname;
672
673/*
674 * exported vnode operations
675 */
acde96db 676int dounmount (struct mount *, int);
984263bc 677int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 678 (struct mount *, struct netexport *, const struct export_args *);
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679int vfs_lock (struct mount *); /* lock a vfs */
680void vfs_msync (struct mount *, int);
681void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 682int vfs_busy (struct mount *, int);
6bdbb368 683void vfs_bufstats(void);
984263bc 684int vfs_export /* process mount export info */
1aa89f17 685 (struct mount *, struct netexport *, const struct export_args *);
984263bc 686struct netcred *vfs_export_lookup /* lookup host in fs export list */
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687 (struct mount *, struct netexport *, struct sockaddr *);
688int vfs_allocate_syncvnode (struct mount *);
689void vfs_getnewfsid (struct mount *);
67863d04 690int vfs_setfsid(struct mount *mp, fsid_t *template);
b13267a5 691cdev_t vfs_getrootfsid (struct mount *);
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692struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
693int vfs_modevent (module_t, int, void *);
694int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
695int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 696void vfs_unbusy (struct mount *);
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697void vfs_unmountall (void);
698int vfs_register (struct vfsconf *);
699int vfs_unregister (struct vfsconf *);
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700extern struct nfs_public nfs_pub;
701
702/*
703 * Declarations for these vfs default operations are located in
704 * kern/vfs_default.c, they should be used instead of making "dummy"
705 * functions or casting entries in the VFS op table to "enopnotsupp()".
706 */
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707vfs_start_t vfs_stdstart;
708vfs_mount_t vfs_stdmount;
709vfs_unmount_t vfs_stdunmount;
710vfs_root_t vfs_stdroot;
711vfs_quotactl_t vfs_stdquotactl;
712vfs_statfs_t vfs_stdstatfs;
d9fad06e 713vfs_statvfs_t vfs_stdstatvfs;
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714vfs_sync_t vfs_stdsync;
715vfs_sync_t vfs_stdnosync;
716vfs_vget_t vfs_stdvget;
717vfs_fhtovp_t vfs_stdfhtovp;
718vfs_checkexp_t vfs_stdcheckexp;
719vfs_vptofh_t vfs_stdvptofh;
720vfs_init_t vfs_stdinit;
721vfs_uninit_t vfs_stduninit;
acde96db 722vfs_extattrctl_t vfs_stdextattrctl;
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723vfs_acinit_t vfs_stdac_init;
724vfs_acdone_t vfs_stdac_done;
1c18cfd0 725vfs_account_t vfs_stdaccount;
e788edda 726vfs_account_t vfs_noaccount;
43c45e8f 727
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728struct vop_access_args;
729int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 730 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 731int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
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732 uid_t uid, struct ucred *cred);
733uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
734 struct ucred *cred, mode_t *modep);
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735int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
736 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
737int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
738 struct ucred *cred,
739 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 740
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741void add_bio_ops(struct bio_ops *ops);
742void rem_bio_ops(struct bio_ops *ops);
9340415c 743
2281065e 744int journal_mountctl(struct vop_mountctl_args *ap);
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745void journal_remove_all_journals(struct mount *mp, int flags);
746
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747void mountlist_insert(struct mount *, int);
748int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
749struct mount *mountlist_boot_getfirst(void);
750void mountlist_remove(struct mount *mp);
751int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
5b4cfb7e 752struct mount *mount_get_by_nc(struct namecache *ncp);
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753#else /* !_KERNEL */
754
755#include <sys/cdefs.h>
756
757__BEGIN_DECLS
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758int fstatfs (int, struct statfs *);
759int getfh (const char *, fhandle_t *);
760int getfsstat (struct statfs *, long, int);
761int getmntinfo (struct statfs **, int);
0e735c8f 762int getmntvinfo (struct statfs **, struct statvfs **, int);
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763int mount (const char *, const char *, int, void *);
764int statfs (const char *, struct statfs *);
765int unmount (const char *, int);
766int fhopen (const struct fhandle *, int);
767int fhstat (const struct fhandle *, struct stat *);
768int fhstatfs (const struct fhandle *, struct statfs *);
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769
770/* C library stuff */
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771void endvfsent (void);
772struct ovfsconf *getvfsbyname (const char *);
773struct ovfsconf *getvfsbytype (int);
774struct ovfsconf *getvfsent (void);
984263bc 775#define getvfsbyname new_getvfsbyname
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776int new_getvfsbyname (const char *, struct vfsconf *);
777void setvfsent (int);
778int vfsisloadable (const char *);
779int vfsload (const char *);
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780__END_DECLS
781
782#endif /* _KERNEL */
783
784#endif /* !_SYS_MOUNT_H_ */
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