1 /* Header file for mounting/unmount Linux filesystems.
2 Copyright (C) 1996-2000, 2004, 2010, 2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 /* This is taken from /usr/include/linux/fs.h. */
23 #define _SYS_MOUNT_H 1
26 #include <sys/ioctl.h>
28 #define BLOCK_SIZE 1024
29 #define BLOCK_SIZE_BITS 10
32 /* These are the fs-independent mount-flags: up to 16 flags are
36 MS_RDONLY = 1, /* Mount read-only. */
37 #define MS_RDONLY MS_RDONLY
38 MS_NOSUID = 2, /* Ignore suid and sgid bits. */
39 #define MS_NOSUID MS_NOSUID
40 MS_NODEV = 4, /* Disallow access to device special files. */
41 #define MS_NODEV MS_NODEV
42 MS_NOEXEC = 8, /* Disallow program execution. */
43 #define MS_NOEXEC MS_NOEXEC
44 MS_SYNCHRONOUS = 16, /* Writes are synced at once. */
45 #define MS_SYNCHRONOUS MS_SYNCHRONOUS
46 MS_REMOUNT = 32, /* Alter flags of a mounted FS. */
47 #define MS_REMOUNT MS_REMOUNT
48 MS_MANDLOCK = 64, /* Allow mandatory locks on an FS. */
49 #define MS_MANDLOCK MS_MANDLOCK
50 MS_DIRSYNC = 128, /* Directory modifications are synchronous. */
51 #define MS_DIRSYNC MS_DIRSYNC
52 MS_NOATIME = 1024, /* Do not update access times. */
53 #define MS_NOATIME MS_NOATIME
54 MS_NODIRATIME = 2048, /* Do not update directory access times. */
55 #define MS_NODIRATIME MS_NODIRATIME
56 MS_BIND = 4096, /* Bind directory at different place. */
57 #define MS_BIND MS_BIND
59 #define MS_MOVE MS_MOVE
63 #define MS_SILENT MS_SILENT
64 MS_POSIXACL = 1 << 16, /* VFS does not apply the umask. */
65 #define MS_POSIXACL MS_POSIXACL
66 MS_UNBINDABLE = 1 << 17, /* Change to unbindable. */
67 #define MS_UNBINDABLE MS_UNBINDABLE
68 MS_PRIVATE = 1 << 18, /* Change to private. */
69 #define MS_PRIVATE MS_PRIVATE
70 MS_SLAVE = 1 << 19, /* Change to slave. */
71 #define MS_SLAVE MS_SLAVE
72 MS_SHARED = 1 << 20, /* Change to shared. */
73 #define MS_SHARED MS_SHARED
74 MS_RELATIME = 1 << 21, /* Update atime relative to mtime/ctime. */
75 #define MS_RELATIME MS_RELATIME
76 MS_KERNMOUNT = 1 << 22, /* This is a kern_mount call. */
77 #define MS_KERNMOUNT MS_KERNMOUNT
78 MS_I_VERSION = 1 << 23, /* Update inode I_version field. */
79 #define MS_I_VERSION MS_I_VERSION
80 MS_STRICTATIME = 1 << 24, /* Always perform atime updates. */
81 #define MS_STRICTATIME MS_STRICTATIME
83 #define MS_ACTIVE MS_ACTIVE
85 #define MS_NOUSER MS_NOUSER
88 /* Flags that can be altered by MS_REMOUNT */
89 #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION)
92 /* Magic mount flag number. Has to be or-ed to the flag values. */
94 #define MS_MGC_VAL 0xc0ed0000 /* Magic flag number to indicate "new" flags */
95 #define MS_MGC_MSK 0xffff0000 /* Magic flag number mask */
98 /* The read-only stuff doesn't really belong here, but any other place
99 is probably as bad and I don't want to create yet another include
102 #define BLKROSET _IO(0x12, 93) /* Set device read-only (0 = read-write). */
103 #define BLKROGET _IO(0x12, 94) /* Get read-only status (0 = read_write). */
104 #define BLKRRPART _IO(0x12, 95) /* Re-read partition table. */
105 #define BLKGETSIZE _IO(0x12, 96) /* Return device size. */
106 #define BLKFLSBUF _IO(0x12, 97) /* Flush buffer cache. */
107 #define BLKRASET _IO(0x12, 98) /* Set read ahead for block device. */
108 #define BLKRAGET _IO(0x12, 99) /* Get current read ahead setting. */
109 #define BLKFRASET _IO(0x12,100) /* Set filesystem read-ahead. */
110 #define BLKFRAGET _IO(0x12,101) /* Get filesystem read-ahead. */
111 #define BLKSECTSET _IO(0x12,102) /* Set max sectors per request. */
112 #define BLKSECTGET _IO(0x12,103) /* Get max sectors per request. */
113 #define BLKSSZGET _IO(0x12,104) /* Get block device sector size. */
114 #define BLKBSZGET _IOR(0x12,112,size_t)
115 #define BLKBSZSET _IOW(0x12,113,size_t)
116 #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size. */
119 /* Possible value for FLAGS parameter of `umount2'. */
122 MNT_FORCE = 1, /* Force unmounting. */
123 #define MNT_FORCE MNT_FORCE
124 MNT_DETACH = 2, /* Just detach from the tree. */
125 #define MNT_DETACH MNT_DETACH
126 MNT_EXPIRE = 4, /* Mark for expiry. */
127 #define MNT_EXPIRE MNT_EXPIRE
128 UMOUNT_NOFOLLOW = 8 /* Don't follow symlink on umount. */
129 #define UMOUNT_NOFOLLOW UMOUNT_NOFOLLOW
135 /* Mount a filesystem. */
136 extern int mount (const char *__special_file, const char *__dir,
137 const char *__fstype, unsigned long int __rwflag,
138 const void *__data) __THROW;
140 /* Unmount a filesystem. */
141 extern int umount (const char *__special_file) __THROW;
143 /* Unmount a filesystem. Force unmounting if FLAGS is set to MNT_FORCE. */
144 extern int umount2 (const char *__special_file, int __flags) __THROW;
148 #endif /* _SYS_MOUNT_H */