8 #include <klibc/extern.h>
12 * These are the fs-independent mount-flags: up to 32 flags are supported
14 #define MS_RDONLY 1 /* Mount read-only */
15 #define MS_NOSUID 2 /* Ignore suid and sgid bits */
16 #define MS_NODEV 4 /* Disallow access to device special files */
17 #define MS_NOEXEC 8 /* Disallow program execution */
18 #define MS_SYNCHRONOUS 16 /* Writes are synced at once */
19 #define MS_REMOUNT 32 /* Alter flags of a mounted FS */
20 #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
21 #define MS_DIRSYNC 128 /* Directory modifications are synchronous */
22 #define MS_NOATIME 1024 /* Do not update access times. */
23 #define MS_NODIRATIME 2048 /* Do not update directory access times */
27 #define MS_VERBOSE 32768
28 #define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
29 #define MS_ONE_SECOND (1<<17) /* fs has 1 sec a/m/ctime resolution */
30 #define MS_ACTIVE (1<<30)
31 #define MS_NOUSER (1<<31)
34 * Superblock flags that can be altered by MS_REMOUNT
36 #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_NOATIME|MS_NODIRATIME)
39 * Old magic mount flag and mask
41 #define MS_MGC_VAL 0xC0ED0000
42 #define MS_MGC_MSK 0xffff0000
47 #define MNT_FORCE 1 /* Forcibly unmount */
48 #define MNT_DETACH 2 /* Detach from tree only */
49 #define MNT_EXPIRE 4 /* Mark for expiry */
54 #define BLKROSET _IO(0x12, 93) /* Set device read-only (0 = read-write). */
55 #define BLKROGET _IO(0x12, 94) /* Get read-only status (0 = read_write). */
56 #define BLKRRPART _IO(0x12, 95) /* Re-read partition table. */
57 #define BLKGETSIZE _IO(0x12, 96) /* Return device size. */
58 #define BLKFLSBUF _IO(0x12, 97) /* Flush buffer cache. */
59 #define BLKRASET _IO(0x12, 98) /* Set read ahead for block device. */
60 #define BLKRAGET _IO(0x12, 99) /* Get current read ahead setting. */
65 __extern int mount(const char *, const char *,
66 const char *, unsigned long,
68 __extern int umount(const char *);
69 __extern int umount2(const char *, int);
70 __extern int pivot_root(const char *, const char *);
72 #endif /* _SYS_MOUNT_H */