1 #ifndef _UAPI_LINUX_MOUNT_H 2 #define _UAPI_LINUX_MOUNT_H 3 4 /* 5 * These are the fs-independent mount-flags: up to 32 flags are supported 6 * 7 * Usage of these is restricted within the kernel to core mount(2) code and 8 * callers of sys_mount() only. Filesystems should be using the SB_* 9 * equivalent instead. 10 */ 11 #define MS_RDONLY 1 /* Mount read-only */ 12 #define MS_NOSUID 2 /* Ignore suid and sgid bits */ 13 #define MS_NODEV 4 /* Disallow access to device special files */ 14 #define MS_NOEXEC 8 /* Disallow program execution */ 15 #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ 16 #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ 17 #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ 18 #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ 19 #define MS_NOATIME 1024 /* Do not update access times. */ 20 #define MS_NODIRATIME 2048 /* Do not update directory access times */ 21 #define MS_BIND 4096 22 #define MS_MOVE 8192 23 #define MS_REC 16384 24 #define MS_VERBOSE 32768 /* War is peace. Verbosity is silence. 25 MS_VERBOSE is deprecated. */ 26 #define MS_SILENT 32768 27 #define MS_POSIXACL (1<<16) /* VFS does not apply the umask */ 28 #define MS_UNBINDABLE (1<<17) /* change to unbindable */ 29 #define MS_PRIVATE (1<<18) /* change to private */ 30 #define MS_SLAVE (1<<19) /* change to slave */ 31 #define MS_SHARED (1<<20) /* change to shared */ 32 #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */ 33 #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ 34 #define MS_I_VERSION (1<<23) /* Update inode I_version field */ 35 #define MS_STRICTATIME (1<<24) /* Always perform atime updates */ 36 #define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */ 37 38 /* These sb flags are internal to the kernel */ 39 #define MS_SUBMOUNT (1<<26) 40 #define MS_NOREMOTELOCK (1<<27) 41 #define MS_NOSEC (1<<28) 42 #define MS_BORN (1<<29) 43 #define MS_ACTIVE (1<<30) 44 #define MS_NOUSER (1<<31) 45 46 /* 47 * Superblock flags that can be altered by MS_REMOUNT 48 */ 49 #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\ 50 MS_LAZYTIME) 51 52 /* 53 * Old magic mount flag and mask 54 */ 55 #define MS_MGC_VAL 0xC0ED0000 56 #define MS_MGC_MSK 0xffff0000 57 58 #endif /* _UAPI_LINUX_MOUNT_H */ 59
