| #ifndef MS_RDONLY |
| #define MS_RDONLY 1 /* Mount read-only */ |
| #endif |
| #ifndef MS_NOSUID |
| #define MS_NOSUID 2 /* Ignore suid and sgid bits */ |
| #endif |
| #ifndef MS_NODEV |
| #define MS_NODEV 4 /* Disallow access to device special files */ |
| #endif |
| #ifndef MS_NOEXEC |
| #define MS_NOEXEC 8 /* Disallow program execution */ |
| #endif |
| #ifndef MS_SYNCHRONOUS |
| #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ |
| #endif |
| #ifndef MS_REMOUNT |
| #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ |
| #endif |
| #ifndef MS_MANDLOCK |
| #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ |
| #endif |
| #ifndef MS_DIRSYNC |
| #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ |
| #endif |
| |
| #ifndef MS_ACTION_MASK |
| #define MS_ACTION_MASK 0x380 |
| /* Remount, but new filesystem may be different from old. Atomic |
| (i.e. there is no interval when nothing is mounted at the mountpoint). |
| If new fs differs from the old one and old is busy - -EBUSY. */ |
| #define MS_REPLACE 0x080 /* 128 */ |
| /* After, Before: as soon as we get unions these will add a new member |
| in the end or beginning of the chain. Fail if there is a stack |
| on the mountpoint. */ |
| #define MS_AFTER 0x100 /* 256 */ |
| #define MS_BEFORE 0x180 |
| /* Over: if nothing mounted on a mountpoint - same as if none of these |
| flags had been set; if we have a union with more than one element - fail; |
| if we have a stack or plain mount - mount atop of it, forming a stack. */ |
| #define MS_OVER 0x200 /* 512 */ |
| #endif |
| #ifndef MS_NOATIME |
| #define MS_NOATIME 0x400 /* 1024: Do not update access times. */ |
| #endif |
| #ifndef MS_NODIRATIME |
| #define MS_NODIRATIME 0x800 /* 2048: Don't update directory access times */ |
| #endif |
| #ifndef MS_BIND |
| #define MS_BIND 0x1000 /* 4096: Mount existing tree also elsewhere */ |
| #endif |
| #ifndef MS_MOVE |
| #define MS_MOVE 0x2000 /* 8192: Atomically move tree */ |
| #endif |
| #ifndef MS_REC |
| #define MS_REC 0x4000 /* 16384: Recursive loopback */ |
| #endif |
| #ifndef MS_VERBOSE |
| #define MS_VERBOSE 0x8000 /* 32768 */ |
| #endif |
| /* |
| * Magic mount flag number. Had to be or-ed to the flag values. |
| */ |
| #ifndef MS_MGC_VAL |
| #define MS_MGC_VAL 0xC0ED0000 /* magic flag number to indicate "new" flags */ |
| #endif |
| #ifndef MS_MGC_MSK |
| #define MS_MGC_MSK 0xffff0000 /* magic flag number mask */ |
| #endif |