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1.1 root 1: /*
2: * Copyright (c) 1989 The Regents of the University of California.
3: * 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: *
1.1.1.3 ! root 33: * from: @(#)mount.h 7.22 (Berkeley) 6/3/91
! 34: * mount.h,v 1.11.2.1 1993/08/05 02:37:35 cgd Exp
1.1 root 35: */
36:
1.1.1.3 ! root 37: #ifndef _SYS_MOUNT_H_
! 38: #define _SYS_MOUNT_H_
! 39:
1.1 root 40: typedef quad fsid_t; /* file system id type */
41:
42: /*
43: * File identifier.
44: * These are unique per filesystem on a single machine.
45: */
46: #define MAXFIDSZ 16
47:
48: struct fid {
49: u_short fid_len; /* length of data in bytes */
50: u_short fid_reserved; /* force longword alignment */
51: char fid_data[MAXFIDSZ]; /* data (variable length) */
52: };
53:
54: /*
55: * file system statistics
56: */
57:
58: #define MNAMELEN 90 /* length of buffer for returned name */
59:
60: struct statfs {
61: short f_type; /* type of filesystem (see below) */
62: short f_flags; /* copy of mount flags */
63: long f_fsize; /* fundamental file system block size */
64: long f_bsize; /* optimal transfer block size */
65: long f_blocks; /* total data blocks in file system */
66: long f_bfree; /* free blocks in fs */
67: long f_bavail; /* free blocks avail to non-superuser */
68: long f_files; /* total file nodes in file system */
69: long f_ffree; /* free file nodes in fs */
70: fsid_t f_fsid; /* file system id */
71: long f_spare[9]; /* spare for later */
72: char f_mntonname[MNAMELEN]; /* directory on which mounted */
73: char f_mntfromname[MNAMELEN];/* mounted filesystem */
74: };
75:
76: /*
77: * File system types.
78: */
79: #define MOUNT_NONE 0
1.1.1.2 root 80: #define MOUNT_UFS 1 /* UNIX "Fast" Filesystem */
81: #define MOUNT_NFS 2 /* Network Filesystem */
82: #define MOUNT_MFS 3 /* Memory Filesystem */
83: #define MOUNT_MSDOS 4 /* MSDOS Filesystem */
84: #define MOUNT_ISOFS 5 /* iso9660 cdrom */
85: #define MOUNT_FDESC 6 /* /dev/fd filesystem */
86: #define MOUNT_KERNFS 7 /* kernel variable filesystem */
1.1.1.3 ! root 87: #define MOUNT_DEVFS 8 /* device node filesystem */
! 88: #define MOUNT_AFS 9 /* AFS 3.x */
! 89: #define MOUNT_MAXTYPE MOUNT_AFS
1.1 root 90:
91: /*
92: * Structure per mounted file system.
93: * Each mounted file system has an array of
94: * operations and an instance record.
95: * The file systems are put on a doubly linked list.
96: */
97: struct mount {
98: struct mount *mnt_next; /* next in mount list */
99: struct mount *mnt_prev; /* prev in mount list */
100: struct vfsops *mnt_op; /* operations on fs */
101: struct vnode *mnt_vnodecovered; /* vnode we mounted on */
102: struct vnode *mnt_mounth; /* list of vnodes this mount */
103: int mnt_flag; /* flags */
104: uid_t mnt_exroot; /* exported mapping for uid 0 */
105: struct statfs mnt_stat; /* cache of filesystem stats */
106: qaddr_t mnt_data; /* private data */
107: };
108:
109: /*
110: * Mount flags.
111: */
112: #define MNT_RDONLY 0x00000001 /* read only filesystem */
113: #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
114: #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
115: #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
116: #define MNT_NODEV 0x00000010 /* don't interpret special files */
1.1.1.2 root 117: #define MNT_UNION 0x00000020 /* union with underlying filesysem */
1.1.1.3 ! root 118: #ifdef ISOFS
! 119: #define ISOFSMNT_NORRIP 0x00000040 /* disable Rock Ridge Ext.*/
! 120: #endif
1.1 root 121:
122: /*
123: * exported mount flags.
124: */
125: #define MNT_EXPORTED 0x00000100 /* file system is exported */
126: #define MNT_EXRDONLY 0x00000200 /* exported read only */
127:
128: /*
129: * Flags set by internal operations.
130: */
131: #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
132: #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
133:
134: /*
135: * Mask of flags that are visible to statfs()
136: */
137: #define MNT_VISFLAGMASK 0x0000ffff
138:
139: /*
140: * filesystem control flags.
141: *
142: * MNT_MLOCK lock the mount entry so that name lookup cannot proceed
143: * past the mount point. This keeps the subtree stable during mounts
144: * and unmounts.
145: */
146: #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
147: #define MNT_MLOCK 0x00100000 /* lock so that subtree is stable */
148: #define MNT_MWAIT 0x00200000 /* someone is waiting for lock */
149: #define MNT_MPBUSY 0x00400000 /* scan of mount point in progress */
150: #define MNT_MPWANT 0x00800000 /* waiting for mount point */
151: #define MNT_UNMOUNT 0x01000000 /* unmount in progress */
152:
153: /*
154: * Operations supported on mounted file system.
155: */
156: #ifdef KERNEL
157: #ifdef __STDC__
158: struct nameidata;
159: #endif
160:
161: struct vfsops {
162: int (*vfs_mount) __P((struct mount *mp, char *path, caddr_t data,
163: struct nameidata *ndp, struct proc *p));
164: int (*vfs_start) __P((struct mount *mp, int flags,
165: struct proc *p));
166: int (*vfs_unmount) __P((struct mount *mp, int mntflags,
167: struct proc *p));
168: int (*vfs_root) __P((struct mount *mp, struct vnode **vpp));
169: /* int uid, should be uid_t */
170: int (*vfs_quotactl) __P((struct mount *mp, int cmds, int uid,
171: caddr_t arg, struct proc *p));
172: int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp,
173: struct proc *p));
174: int (*vfs_sync) __P((struct mount *mp, int waitfor));
175: int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp,
176: struct vnode **vpp));
177: int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp));
178: int (*vfs_init) __P(());
179: };
180:
181: #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
182: (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
183: #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
184: #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
185: #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
186: #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
187: #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
188: #define VFS_SYNC(MP, WAITFOR) (*(MP)->mnt_op->vfs_sync)(MP, WAITFOR)
189: #define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
190: #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
191: #endif /* KERNEL */
192:
193: /*
194: * Flags for various system call interfaces.
195: *
196: * forcibly flags for vfs_umount().
197: * waitfor flags to vfs_sync() and getfsstat()
198: */
199: #define MNT_FORCE 1
200: #define MNT_NOFORCE 2
201: #define MNT_WAIT 1
202: #define MNT_NOWAIT 2
203:
204: /*
205: * Generic file handle
206: */
207: struct fhandle {
208: fsid_t fh_fsid; /* File system id of mount point */
209: struct fid fh_fid; /* Id of file */
210: };
211: typedef struct fhandle fhandle_t;
212:
213: /*
214: * Arguments to mount UFS
215: */
216: struct ufs_args {
217: char *fspec; /* block special device to mount */
218: int exflags; /* export related flags */
219: uid_t exroot; /* mapping for root uid */
220: };
221:
222: #ifdef MFS
223: /*
224: * Arguments to mount MFS
225: */
226: struct mfs_args {
227: char *name; /* name to export for statfs */
228: caddr_t base; /* base address of file system in memory */
229: u_long size; /* size of file system */
230: };
231: #endif MFS
232:
1.1.1.2 root 233: #if defined(NFSSERVER) || defined(NFSCLIENT)
1.1 root 234: /*
235: * File Handle (32 bytes for version 2), variable up to 1024 for version 3
236: */
237: union nfsv2fh {
238: fhandle_t fh_generic;
239: u_char fh_bytes[32];
240: };
241: typedef union nfsv2fh nfsv2fh_t;
242:
243: /*
244: * Arguments to mount NFS
245: */
246: struct nfs_args {
247: struct sockaddr *addr; /* file server address */
248: int sotype; /* Socket type */
249: int proto; /* and Protocol */
250: nfsv2fh_t *fh; /* File handle to be mounted */
251: int flags; /* flags */
252: int wsize; /* write size in bytes */
253: int rsize; /* read size in bytes */
254: int timeo; /* initial timeout in .1 secs */
255: int retrans; /* times to retry send */
256: char *hostname; /* server's name */
257: };
258: /*
259: * NFS mount option flags
260: */
261: #define NFSMNT_SOFT 0x0001 /* soft mount (hard is default) */
262: #define NFSMNT_WSIZE 0x0002 /* set write size */
263: #define NFSMNT_RSIZE 0x0004 /* set read size */
264: #define NFSMNT_TIMEO 0x0008 /* set initial timeout */
265: #define NFSMNT_RETRANS 0x0010 /* set number of request retrys */
266: #define NFSMNT_HOSTNAME 0x0020 /* set hostname for error printf */
267: #define NFSMNT_INT 0x0040 /* allow interrupts on hard mount */
268: #define NFSMNT_NOCONN 0x0080 /* Don't Connect the socket */
269: #define NFSMNT_SCKLOCK 0x0100 /* Lock socket against others */
270: #define NFSMNT_WANTSCK 0x0200 /* Want a socket lock */
271: #define NFSMNT_SPONGY 0x0400 /* spongy mount (soft for stat and lookup) */
272: #define NFSMNT_COMPRESS 0x0800 /* Compress nfs rpc xdr */
273: #define NFSMNT_LOCKBITS (NFSMNT_SCKLOCK | NFSMNT_WANTSCK)
1.1.1.2 root 274: #endif /* defined(NFSSERVER || defined(NFSCLIENT) */
275:
1.1.1.3 ! root 276: #ifdef MSDOSFS
1.1.1.2 root 277: /*
278: * Arguments to mount MSDOS filesystems.
279: */
280: struct pcfs_args {
281: char *fspec; /* blocks special holding the fs to mount */
282: int exflags; /* mount flags */
283: uid_t exroot; /* mapping for root uid */
284: };
1.1.1.3 ! root 285: #endif /* MSDOSFS */
1.1 root 286:
287: #ifdef KERNEL
288: /*
289: * exported vnode operations
290: */
291: void vfs_remove __P((struct mount *mp)); /* remove a vfs from mount list */
292: int vfs_lock __P((struct mount *mp)); /* lock a vfs */
293: void vfs_unlock __P((struct mount *mp)); /* unlock a vfs */
294: struct mount *getvfs __P((fsid_t *fsid)); /* return vfs given fsid */
295: struct mount *rootfs; /* ptr to root mount structure */
296: struct vfsops *vfssw[]; /* mount filesystem type table */
297:
298: #else /* KERNEL */
299:
300: #include <sys/cdefs.h>
301:
302: __BEGIN_DECLS
303: int fstatfs __P((int, struct statfs *));
304: int getfh __P((const char *, fhandle_t *));
305: int getfsstat __P((struct statfs *, long, int));
306: int getmntinfo __P((struct statfs **, int));
307: int mount __P((int, const char *, int, void *));
308: int statfs __P((const char *, struct statfs *));
309: int unmount __P((const char *, int));
310: __END_DECLS
311:
312: #endif /* KERNEL */
1.1.1.3 ! root 313:
! 314: #endif /* !_SYS_MOUNT_H_ */
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