Annotation of sys/sys/mount.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mount.h,v 1.81 2007/06/01 05:37:14 deraadt Exp $ */
2: /* $NetBSD: mount.h,v 1.48 1996/02/18 11:55:47 fvdl Exp $ */
3:
4: /*
5: * Copyright (c) 1989, 1991, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the University nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: *
32: * @(#)mount.h 8.15 (Berkeley) 7/14/94
33: */
34:
35: #ifndef _SYS_MOUNT_H_
36: #define _SYS_MOUNT_H_
37:
38: #include <sys/cdefs.h>
39: #ifndef _KERNEL
40: #include <sys/ucred.h>
41: #endif
42: #include <sys/queue.h>
43: #include <sys/rwlock.h>
44:
45: typedef struct { int32_t val[2]; } fsid_t; /* file system id type */
46:
47: /*
48: * File identifier.
49: * These are unique per filesystem on a single machine.
50: */
51: #define MAXFIDSZ 16
52:
53: struct fid {
54: u_short fid_len; /* length of data in bytes */
55: u_short fid_reserved; /* force longword alignment */
56: char fid_data[MAXFIDSZ]; /* data (variable length) */
57: };
58:
59: /*
60: * Export arguments for local filesystem mount calls.
61: */
62: struct export_args {
63: int ex_flags; /* export related flags */
64: uid_t ex_root; /* mapping for root uid */
65: struct ucred ex_anon; /* mapping for anonymous user */
66: struct sockaddr *ex_addr; /* net address to which exported */
67: int ex_addrlen; /* and the net address length */
68: struct sockaddr *ex_mask; /* mask of valid bits in saddr */
69: int ex_masklen; /* and the smask length */
70: };
71:
72: /*
73: * Arguments to mount UFS-based filesystems
74: */
75: struct ufs_args {
76: char *fspec; /* block special device to mount */
77: struct export_args export_info;/* network export information */
78: };
79:
80: /*
81: * Arguments to mount MFS
82: */
83: struct mfs_args {
84: char *fspec; /* name to export for statfs */
85: struct export_args export_info;/* if exported MFSes are supported */
86: caddr_t base; /* base of file system in memory */
87: u_long size; /* size of file system */
88: };
89:
90: /*
91: * Arguments to mount ISO 9660 filesystems.
92: */
93: struct iso_args {
94: char *fspec; /* block special device to mount */
95: struct export_args export_info;/* network export info */
96: int flags; /* mounting flags, see below */
97: int sess; /* start sector of session */
98: };
99:
100: #define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/
101: #define ISOFSMNT_GENS 0x00000002 /* enable generation numbers */
102: #define ISOFSMNT_EXTATT 0x00000004 /* enable extended attr. */
103: #define ISOFSMNT_NOJOLIET 0x00000008 /* disable Joliet Ext.*/
104: #define ISOFSMNT_SESS 0x00000010 /* use iso_args.sess */
105:
106: /*
107: * Arguments to mount NFS
108: */
109: #define NFS_ARGSVERSION 4 /* change when nfs_args changes */
110: struct nfs_args {
111: int version; /* args structure version number */
112: struct sockaddr *addr; /* file server address */
113: int addrlen; /* length of address */
114: int sotype; /* Socket type */
115: int proto; /* and Protocol */
116: u_char *fh; /* File handle to be mounted */
117: int fhsize; /* Size, in bytes, of fh */
118: int flags; /* flags */
119: int wsize; /* write size in bytes */
120: int rsize; /* read size in bytes */
121: int readdirsize; /* readdir size in bytes */
122: int timeo; /* initial timeout in .1 secs */
123: int retrans; /* times to retry send */
124: int maxgrouplist; /* Max. size of group list */
125: int readahead; /* # of blocks to readahead */
126: int leaseterm; /* Term (sec) of lease */
127: int deadthresh; /* Retrans threshold */
128: char *hostname; /* server's name */
129: int acregmin; /* Attr cache file recently modified */
130: int acregmax; /* ac file not recently modified */
131: int acdirmin; /* ac for dir recently modified */
132: int acdirmax; /* ac for dir not recently modified */
133: };
134: /* NFS args version 3 (for backwards compatibility) */
135: struct nfs_args3 {
136: int version; /* args structure version number */
137: struct sockaddr *addr; /* file server address */
138: int addrlen; /* length of address */
139: int sotype; /* Socket type */
140: int proto; /* and Protocol */
141: u_char *fh; /* File handle to be mounted */
142: int fhsize; /* Size, in bytes, of fh */
143: int flags; /* flags */
144: int wsize; /* write size in bytes */
145: int rsize; /* read size in bytes */
146: int readdirsize; /* readdir size in bytes */
147: int timeo; /* initial timeout in .1 secs */
148: int retrans; /* times to retry send */
149: int maxgrouplist; /* Max. size of group list */
150: int readahead; /* # of blocks to readahead */
151: int leaseterm; /* Term (sec) of lease */
152: int deadthresh; /* Retrans threshold */
153: char *hostname; /* server's name */
154: };
155:
156: /*
157: * NFS mount option flags
158: */
159: #ifndef _KERNEL
160: #define NFSMNT_RESVPORT 0x00000000 /* always use reserved ports */
161: #endif /* ! _KERNEL */
162: #define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */
163: #define NFSMNT_WSIZE 0x00000002 /* set write size */
164: #define NFSMNT_RSIZE 0x00000004 /* set read size */
165: #define NFSMNT_TIMEO 0x00000008 /* set initial timeout */
166: #define NFSMNT_RETRANS 0x00000010 /* set number of request retries */
167: #define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */
168: #define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */
169: #define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */
170: #define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */
171: #define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */
172: #define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */
173: #define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */
174: #define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */
175: #define NFSMNT_READAHEAD 0x00002000 /* set read ahead */
176: #define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */
177: #ifdef _KERNEL /* Coming soon to a system call near you! */
178: #define NFSMNT_NOAC 0x00008000 /* disable attribute cache */
179: #endif /* _KERNEL */
180: #define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */
181: #define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */
182:
183: /* Flags valid only in mount syscall arguments */
184: #define NFSMNT_ACREGMIN 0x00040000 /* acregmin field valid */
185: #define NFSMNT_ACREGMAX 0x00080000 /* acregmax field valid */
186: #define NFSMNT_ACDIRMIN 0x00100000 /* acdirmin field valid */
187: #define NFSMNT_ACDIRMAX 0x00200000 /* acdirmax field valid */
188:
189: /* Flags valid only in kernel */
190: #define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */
191: #define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */
192: #define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */
193: #define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */
194: #define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */
195: #define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */
196: #define NFSMNT_DISMNT 0x00800000 /* Dismounted */
197: #define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */
198: #define NFSMNT_WANTSND 0x02000000 /* Want above */
199: #define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */
200: #define NFSMNT_WANTRCV 0x08000000 /* Want above */
201: #define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */
202: #define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */
203: #define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */
204: #define NFSMNT_AUTHERR 0x80000000 /* Authentication error */
205:
206: /*
207: * Arguments to mount MSDOS filesystems.
208: */
209: struct msdosfs_args {
210: char *fspec; /* blocks special holding the fs to mount */
211: struct export_args export_info;
212: /* network export information */
213: uid_t uid; /* uid that owns msdosfs files */
214: gid_t gid; /* gid that owns msdosfs files */
215: mode_t mask; /* mask to be applied for msdosfs perms */
216: int flags; /* see below */
217: };
218:
219: /*
220: * Msdosfs mount options:
221: */
222: #define MSDOSFSMNT_SHORTNAME 0x01 /* Force old DOS short names only */
223: #define MSDOSFSMNT_LONGNAME 0x02 /* Force Win'95 long names */
224: #define MSDOSFSMNT_NOWIN95 0x04 /* Completely ignore Win95 entries */
225: #define MSDOSFSMNT_ALLOWDIRX 0x10 /* dir is mode +x if r */
226:
227: /*
228: * Arguments to mount ntfs filesystems
229: */
230: struct ntfs_args {
231: char *fspec; /* block special device to mount */
232: struct export_args export_info;/* network export information */
233: uid_t uid; /* uid that owns ntfs files */
234: gid_t gid; /* gid that owns ntfs files */
235: mode_t mode; /* mask to be applied for ntfs perms */
236: u_long flag; /* additional flags */
237: };
238:
239: /*
240: * ntfs mount options:
241: */
242: #define NTFS_MFLAG_CASEINS 0x00000001
243: #define NTFS_MFLAG_ALLNAMES 0x00000002
244:
245: /* Arguments to mount UDF file systems */
246: struct udf_args {
247: char *fspec; /* Block special device to mount */
248: u_int32_t lastblock; /* Special device last block */
249: };
250:
251: /*
252: * Arguments to mount procfs filesystems
253: */
254: struct procfs_args {
255: int version;
256: int flags;
257: };
258:
259: /*
260: * procfs mount options:
261: */
262: #define PROCFS_ARGSVERSION 1
263: #define PROCFSMNT_LINUXCOMPAT 0x01
264:
265:
266: /*
267: * file system statistics
268: */
269:
270: #define MFSNAMELEN 16 /* length of fs type name, including nul */
271: #define MNAMELEN 90 /* length of buffer for returned name */
272:
273: /* per-filesystem mount options */
274: union mount_info {
275: struct ufs_args ufs_args;
276: struct mfs_args mfs_args;
277: struct nfs_args nfs_args;
278: struct iso_args iso_args;
279: struct procfs_args procfs_args;
280: struct msdosfs_args msdosfs_args;
281: struct ntfs_args ntfs_args;
282: char __align[160]; /* 64-bit alignment and room to grow */
283: };
284:
285: /* new statfs structure with mount options */
286: struct statfs {
287: u_int32_t f_flags; /* copy of mount flags */
288: int32_t f_bsize; /* fundamental file system block size */
289: u_int32_t f_iosize; /* optimal transfer block size */
290: u_int32_t f_blocks; /* total data blocks in file system */
291: u_int32_t f_bfree; /* free blocks in fs */
292: int32_t f_bavail; /* free blocks avail to non-superuser */
293: u_int32_t f_files; /* total file nodes in file system */
294: u_int32_t f_ffree; /* free file nodes in fs */
295: fsid_t f_fsid; /* file system id */
296: uid_t f_owner; /* user that mounted the file system */
297: u_int32_t f_syncwrites; /* count of sync writes since mount */
298: u_int32_t f_asyncwrites; /* count of async writes since mount */
299: u_int32_t f_ctime; /* last mount [-u] time */
300: u_int32_t f_spare[3]; /* spare for later */
301: char f_fstypename[MFSNAMELEN]; /* fs type name */
302: char f_mntonname[MNAMELEN]; /* directory on which mounted */
303: char f_mntfromname[MNAMELEN]; /* mounted file system */
304: union mount_info mount_info; /* per-filesystem mount options */
305: };
306:
307: /* old (pre-2.6) statfs structure */
308: struct ostatfs {
309: short f_type; /* type of file system (unused; zero) */
310: short f_flags; /* copy of mount flags */
311: long f_bsize; /* fundamental file system block size */
312: long f_iosize; /* optimal transfer block size */
313: long f_blocks; /* total data blocks in file system */
314: long f_bfree; /* free blocks in fs */
315: long f_bavail; /* free blocks avail to non-superuser */
316: long f_files; /* total file nodes in file system */
317: long f_ffree; /* free file nodes in fs */
318: fsid_t f_fsid; /* file system id */
319: uid_t f_owner; /* user that mounted the file system */
320: long f_syncwrites; /* count of sync writes since mount */
321: long f_asyncwrites; /* count of async writes since mount */
322: long f_spare[2]; /* spare for later */
323: char f_fstypename[MFSNAMELEN]; /* fs type name */
324: char f_mntonname[MNAMELEN]; /* directory on which mounted */
325: char f_mntfromname[MNAMELEN]; /* mounted file system */
326: };
327:
328: /*
329: * File system types.
330: */
331: #define MOUNT_FFS "ffs" /* UNIX "Fast" Filesystem */
332: #define MOUNT_UFS MOUNT_FFS /* for compatibility */
333: #define MOUNT_NFS "nfs" /* Network Filesystem */
334: #define MOUNT_MFS "mfs" /* Memory Filesystem */
335: #define MOUNT_MSDOS "msdos" /* MSDOS Filesystem */
336: #define MOUNT_PORTAL "portal" /* Portal Filesystem */
337: #define MOUNT_PROCFS "procfs" /* /proc Filesystem */
338: #define MOUNT_AFS "afs" /* Andrew Filesystem */
339: #define MOUNT_CD9660 "cd9660" /* ISO9660 (aka CDROM) Filesystem */
340: #define MOUNT_EXT2FS "ext2fs" /* Second Extended Filesystem */
341: #define MOUNT_NCPFS "ncpfs" /* NetWare Network File System */
342: #define MOUNT_XFS "xfs" /* xfs */
343: #define MOUNT_NTFS "ntfs" /* NTFS */
344: #define MOUNT_UDF "udf" /* UDF */
345:
346: /*
347: * Structure per mounted file system. Each mounted file system has an
348: * array of operations and an instance record. The file systems are
349: * put on a doubly linked list.
350: */
351: LIST_HEAD(vnodelst, vnode);
352:
353: struct mount {
354: CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */
355: const struct vfsops *mnt_op; /* operations on fs */
356: struct vfsconf *mnt_vfc; /* configuration info */
357: struct vnode *mnt_vnodecovered; /* vnode we mounted on */
358: struct vnode *mnt_syncer; /* syncer vnode */
359: struct vnodelst mnt_vnodelist; /* list of vnodes this mount */
360: struct rwlock mnt_lock; /* mount structure lock */
361: int mnt_flag; /* flags */
362: int mnt_maxsymlinklen; /* max size of short symlink */
363: struct statfs mnt_stat; /* cache of filesystem stats */
364: void *mnt_data; /* private data */
365: };
366:
367: /*
368: * Mount flags.
369: *
370: * Unmount uses MNT_FORCE flag.
371: */
372: #define MNT_RDONLY 0x00000001 /* read only filesystem */
373: #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
374: #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
375: #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
376: #define MNT_NODEV 0x00000010 /* don't interpret special files */
377: #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
378:
379: /*
380: * exported mount flags.
381: */
382: #define MNT_EXRDONLY 0x00000080 /* exported read only */
383: #define MNT_EXPORTED 0x00000100 /* file system is exported */
384: #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
385: #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
386: #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
387:
388: /*
389: * Flags set by internal operations.
390: */
391: #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
392: #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
393: #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
394:
395: /*
396: * Extra post 4.4BSD-lite2 mount flags.
397: */
398: #define MNT_NOATIME 0x00008000 /* don't update access times on fs */
399:
400: /*
401: * Mask of flags that are visible to statfs()
402: */
403: #define MNT_VISFLAGMASK 0x0400ffff
404:
405: #define MNT_BITS \
406: "\010\001RDONLY\002SYNCHRONOUS\003NOEXEC\004NOSUID\005NODEV" \
407: "\007ASYNC\010EXRDONLY\011EXPORTED\012DEFEXPORTED\013EXPORTANON" \
408: "\014EXKERB\015LOCAL\016QUOTA\017ROOTFS"
409:
410: /*
411: * filesystem control flags.
412: */
413: #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
414: #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
415: #define MNT_RELOAD 0x00040000 /* reload filesystem data */
416: #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
417: #define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */
418: #define MNT_SOFTDEP 0x04000000 /* soft dependencies being done */
419: #define MNT_DOOMED 0x08000000 /* device behind filesystem is gone */
420:
421: /*
422: * Sysctl CTL_VFS definitions.
423: *
424: * Second level identifier specifies which filesystem. Second level
425: * identifier VFS_GENERIC returns information about all filesystems.
426: */
427: #define VFS_GENERIC 0 /* generic filesystem information */
428: /*
429: * Third level identifiers for VFS_GENERIC are given below; third
430: * level identifiers for specific filesystems are given in their
431: * mount specific header files.
432: */
433: #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
434: #define VFS_CONF 2 /* struct: vfsconf for filesystem given
435: as next argument */
436: #define CTL_VFSGENCTL_NAMES { \
437: { 0, 0 }, \
438: { "maxtypenum", CTLTYPE_INT }, \
439: { "conf", CTLTYPE_NODE } \
440: }
441:
442: /*
443: * Filesystem configuration information. One of these exists for each
444: * type of filesystem supported by the kernel. These are searched at
445: * mount time to identify the requested filesystem.
446: */
447: struct vfsconf {
448: const struct vfsops *vfc_vfsops; /* filesystem operations vector */
449: char vfc_name[MFSNAMELEN]; /* filesystem type name */
450: int vfc_typenum; /* historic filesystem type number */
451: int vfc_refcount; /* number mounted of this type */
452: int vfc_flags; /* permanent flags */
453: int (*vfc_mountroot)(void); /* if != NULL, routine to mount root */
454: struct vfsconf *vfc_next; /* next in list */
455: };
456:
457: /*
458: * Operations supported on mounted file system.
459: */
460: #ifdef _KERNEL
461: #ifdef __STDC__
462: struct nameidata;
463: struct mbuf;
464: #endif
465:
466: extern int maxvfsconf; /* highest defined filesystem type */
467: extern struct vfsconf *vfsconf; /* head of list of filesystem types */
468:
469: struct vfsops {
470: int (*vfs_mount)(struct mount *mp, const char *path,
471: void *data,
472: struct nameidata *ndp, struct proc *p);
473: int (*vfs_start)(struct mount *mp, int flags,
474: struct proc *p);
475: int (*vfs_unmount)(struct mount *mp, int mntflags,
476: struct proc *p);
477: int (*vfs_root)(struct mount *mp, struct vnode **vpp);
478: int (*vfs_quotactl)(struct mount *mp, int cmds, uid_t uid,
479: caddr_t arg, struct proc *p);
480: int (*vfs_statfs)(struct mount *mp, struct statfs *sbp,
481: struct proc *p);
482: int (*vfs_sync)(struct mount *mp, int waitfor,
483: struct ucred *cred, struct proc *p);
484: int (*vfs_vget)(struct mount *mp, ino_t ino,
485: struct vnode **vpp);
486: int (*vfs_fhtovp)(struct mount *mp, struct fid *fhp,
487: struct vnode **vpp);
488: int (*vfs_vptofh)(struct vnode *vp, struct fid *fhp);
489: int (*vfs_init)(struct vfsconf *);
490: int (*vfs_sysctl)(int *, u_int, void *, size_t *, void *,
491: size_t, struct proc *);
492: int (*vfs_checkexp)(struct mount *mp, struct mbuf *nam,
493: int *extflagsp, struct ucred **credanonp);
494: };
495:
496: #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
497: (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
498: #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
499: #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
500: #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
501: #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
502: #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
503: #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
504: #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
505: #define VFS_FHTOVP(MP, FIDP, VPP) \
506: (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
507: #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
508: #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
509: (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
510: #endif /* _KERNEL */
511:
512: /*
513: * Flags for various system call interfaces.
514: *
515: * waitfor flags to vfs_sync() and getfsstat()
516: */
517: #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
518: #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
519: #define MNT_LAZY 3 /* push data not written by filesystem syncer */
520:
521: /*
522: * Generic file handle
523: */
524: struct fhandle {
525: fsid_t fh_fsid; /* File system id of mount point */
526: struct fid fh_fid; /* File sys specific id */
527: };
528: typedef struct fhandle fhandle_t;
529:
530: #ifdef _KERNEL
531: #include <net/radix.h>
532: #include <sys/socket.h> /* XXX for AF_MAX */
533:
534: /*
535: * Network address lookup element
536: */
537: struct netcred {
538: struct radix_node netc_rnodes[2];
539: int netc_exflags;
540: struct ucred netc_anon;
541: };
542:
543: /*
544: * Network export information
545: */
546: struct netexport {
547: struct netcred ne_defexported; /* Default export */
548: struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
549: };
550: #endif /* _KERNEL */
551:
552: #ifdef _KERNEL
553: /*
554: * exported vnode operations
555: */
556: int vfs_busy(struct mount *, int);
557: #define VB_READ 0x01
558: #define VB_WRITE 0x02
559: #define VB_NOWAIT 0x04 /* immediately fail on busy lock */
560: #define VB_WAIT 0x08 /* sleep fail on busy lock */
561:
562: int vfs_isbusy(struct mount *);
563: int vfs_mount_foreach_vnode(struct mount *, int (*func)(struct vnode *,
564: void *), void *);
565: void vfs_getnewfsid(struct mount *);
566: struct mount *vfs_getvfs(fsid_t *);
567: int vfs_mountedon(struct vnode *);
568: int vfs_mountroot(void);
569: int vfs_rootmountalloc(char *, char *, struct mount **);
570: void vfs_unbusy(struct mount *);
571: void vfs_unmountall(void);
572: extern CIRCLEQ_HEAD(mntlist, mount) mountlist;
573:
574: struct mount *getvfs(fsid_t *); /* return vfs given fsid */
575: /* process mount export info */
576: int vfs_export(struct mount *, struct netexport *, struct export_args *);
577: /* lookup host in fs export list */
578: struct netcred *vfs_export_lookup(struct mount *, struct netexport *,
579: struct mbuf *);
580: int vfs_allocate_syncvnode(struct mount *);
581: int speedup_syncer(void);
582:
583: int vfs_syncwait(int); /* sync and wait for complete */
584: void vfs_shutdown(void); /* unmount and sync file systems */
585: long makefstype(char *);
586: int dounmount(struct mount *, int, struct proc *, struct vnode *);
587: void vfsinit(void);
588: void vfs_bufstats(void);
589: int vfs_register(struct vfsconf *);
590: int vfs_unregister(struct vfsconf *);
591: #else /* _KERNEL */
592:
593: #ifndef _SYS_STAT_H_
594: struct stat;
595: #endif
596:
597: __BEGIN_DECLS
598: int fstatfs(int, struct statfs *);
599: int getfh(const char *, fhandle_t *);
600: int getfsstat(struct statfs *, size_t, int);
601: int getmntinfo(struct statfs **, int);
602: int mount(const char *, const char *, int, void *);
603: int statfs(const char *, struct statfs *);
604: int unmount(const char *, int);
605: #if __BSD_VISIBLE
606: int fhopen(const fhandle_t *, int);
607: int fhstat(const fhandle_t *, struct stat *);
608: int fhstatfs(const fhandle_t *, struct statfs *);
609: #endif /* __BSD_VISIBLE */
610:
611: __END_DECLS
612:
613: #endif /* _KERNEL */
614: #endif /* !_SYS_MOUNT_H_ */
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