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#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_NOATIME
#define MS_NOATIME 1024 /* Do not update access times. */
#endif
#ifndef MS_NODIRATIME
#define MS_NODIRATIME 2048 /* Do not update directory access times */
#endif
/*
* Magic mount flag number. Has 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
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