#ifndef _UAPI_LINUX_MOUNT_H#define _UAPI_LINUX_MOUNT_H /* * These are the fs-independent mount-flags: up to 32 flags are supported * * Usage of these is restricted within the kernel to core mount(2) code and * callers of sys_mount() only.  Filesystems should be using the SB_* * equivalent instead. */#define MS_RDONLY	 1	/* Mount read-only */#define MS_NOSUID	 2	/* Ignore suid and sgid bits */#define MS_NODEV	 4	/* Disallow access to device special files */#define MS_NOEXEC	 8	/* Disallow program execution */#define MS_SYNCHRONOUS	16	/* Writes are synced at once */#define MS_REMOUNT	32	/* Alter flags of a mounted FS */#define MS_MANDLOCK	64	/* Allow mandatory locks on an FS */#define MS_DIRSYNC	128	/* Directory modifications are synchronous */#define MS_NOATIME	1024	/* Do not update access times. */#define MS_NODIRATIME	2048	/* Do not update directory access times */#define MS_BIND		4096#define MS_MOVE		8192#define MS_REC		16384#define MS_VERBOSE	32768	/* War is peace. Verbosity is silence.				   MS_VERBOSE is deprecated. */#define MS_SILENT	32768#define MS_POSIXACL	(1<<16)	/* VFS does not apply the umask */#define MS_UNBINDABLE	(1<<17)	/* change to unbindable */#define MS_PRIVATE	(1<<18)	/* change to private */#define MS_SLAVE	(1<<19)	/* change to slave */#define MS_SHARED	(1<<20)	/* change to shared */#define MS_RELATIME	(1<<21)	/* Update atime relative to mtime/ctime. */#define MS_KERNMOUNT	(1<<22) /* this is a kern_mount call */#define MS_I_VERSION	(1<<23) /* Update inode I_version field */#define MS_STRICTATIME	(1<<24) /* Always perform atime updates */#define MS_LAZYTIME	(1<<25) /* Update the on-disk [acm]times lazily */ /* These sb flags are internal to the kernel */#define MS_SUBMOUNT     (1<<26)#define MS_NOREMOTELOCK	(1<<27)#define MS_NOSEC	(1<<28)#define MS_BORN		(1<<29)#define MS_ACTIVE	(1<<30)#define MS_NOUSER	(1<<31) /* * Superblock flags that can be altered by MS_REMOUNT */#define MS_RMT_MASK	(MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\			 MS_LAZYTIME) /* * Old magic mount flag and mask */#define MS_MGC_VAL 0xC0ED0000#define MS_MGC_MSK 0xffff0000 /* * open_tree() flags. */#define OPEN_TREE_CLONE		1		/* Clone the target tree and attach the clone */#define OPEN_TREE_CLOEXEC	O_CLOEXEC	/* Close the file on execve() */ /* * move_mount() flags. */#define MOVE_MOUNT_F_SYMLINKS		0x00000001 /* Follow symlinks on from path */#define MOVE_MOUNT_F_AUTOMOUNTS		0x00000002 /* Follow automounts on from path */#define MOVE_MOUNT_F_EMPTY_PATH		0x00000004 /* Empty from path permitted */#define MOVE_MOUNT_T_SYMLINKS		0x00000010 /* Follow symlinks on to path */#define MOVE_MOUNT_T_AUTOMOUNTS		0x00000020 /* Follow automounts on to path */#define MOVE_MOUNT_T_EMPTY_PATH		0x00000040 /* Empty to path permitted */#define MOVE_MOUNT__MASK		0x00000077 /* * fsopen() flags. */#define FSOPEN_CLOEXEC		0x00000001 /* * fspick() flags. */#define FSPICK_CLOEXEC		0x00000001#define FSPICK_SYMLINK_NOFOLLOW	0x00000002#define FSPICK_NO_AUTOMOUNT	0x00000004#define FSPICK_EMPTY_PATH	0x00000008 /* * The type of fsconfig() call made. */enum fsconfig_command {	FSCONFIG_SET_FLAG	= 0,	/* Set parameter, supplying no value */	FSCONFIG_SET_STRING	= 1,	/* Set parameter, supplying a string value */	FSCONFIG_SET_BINARY	= 2,	/* Set parameter, supplying a binary blob value */	FSCONFIG_SET_PATH	= 3,	/* Set parameter, supplying an object by path */	FSCONFIG_SET_PATH_EMPTY	= 4,	/* Set parameter, supplying an object by (empty) path */	FSCONFIG_SET_FD		= 5,	/* Set parameter, supplying an object by fd */	FSCONFIG_CMD_CREATE	= 6,	/* Invoke superblock creation */	FSCONFIG_CMD_RECONFIGURE = 7,	/* Invoke superblock reconfiguration */}; /* * fsmount() flags. */#define FSMOUNT_CLOEXEC		0x00000001 /* * Mount attributes. */#define MOUNT_ATTR_RDONLY	0x00000001 /* Mount read-only */#define MOUNT_ATTR_NOSUID	0x00000002 /* Ignore suid and sgid bits */#define MOUNT_ATTR_NODEV	0x00000004 /* Disallow access to device special files */#define MOUNT_ATTR_NOEXEC	0x00000008 /* Disallow program execution */#define MOUNT_ATTR__ATIME	0x00000070 /* Setting on how atime should be updated */#define MOUNT_ATTR_RELATIME	0x00000000 /* - Update atime relative to mtime/ctime. */#define MOUNT_ATTR_NOATIME	0x00000010 /* - Do not update access times. */#define MOUNT_ATTR_STRICTATIME	0x00000020 /* - Always perform atime updates */#define MOUNT_ATTR_NODIRATIME	0x00000080 /* Do not update directory access times */ #endif /* _UAPI_LINUX_MOUNT_H */