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#ifndef _LINUX_MOUNT_H

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#define _LINUX_MOUNT_H

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* These are the fs-independent mount-flags: up to 32 flags are supported

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* Usage of these is restricted within the kernel to core mount(2) code and

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* callers of sys_mount() only. Filesystems should be using the SB_*

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* equivalent instead.

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#define MS_RDONLY 1 /* Mount read-only */

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#define MS_NOSUID 2 /* Ignore suid and sgid bits */

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#define MS_NODEV 4 /* Disallow access to device special files */

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#define MS_NOEXEC 8 /* Disallow program execution */

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#define MS_SYNCHRONOUS 16 /* Writes are synced at once */

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#define MS_REMOUNT 32 /* Alter flags of a mounted FS */

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#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */

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#define MS_DIRSYNC 128 /* Directory modifications are synchronous */

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#define MS_NOATIME 1024 /* Do not update access times. */

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#define MS_NODIRATIME 2048 /* Do not update directory access times */

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#define MS_BIND 4096

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#define MS_MOVE 8192

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#define MS_REC 16384

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#define MS_VERBOSE 32768 /* War is peace. Verbosity is silence.

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MS_VERBOSE is deprecated. */

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#define MS_SILENT 32768

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#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */

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#define MS_UNBINDABLE (1<<17) /* change to unbindable */

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#define MS_PRIVATE (1<<18) /* change to private */

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#define MS_SLAVE (1<<19) /* change to slave */

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#define MS_SHARED (1<<20) /* change to shared */

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#define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */

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#define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */

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#define MS_I_VERSION (1<<23) /* Update inode I_version field */

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#define MS_STRICTATIME (1<<24) /* Always perform atime updates */

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#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */

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/* These sb flags are internal to the kernel */

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#define MS_SUBMOUNT (1<<26)

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#define MS_NOREMOTELOCK (1<<27)

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#define MS_NOSEC (1<<28)

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#define MS_BORN (1<<29)

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#define MS_ACTIVE (1<<30)

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#define MS_NOUSER (1<<31)

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* Superblock flags that can be altered by MS_REMOUNT

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#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\

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MS_LAZYTIME)

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* Old magic mount flag and mask

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#define MS_MGC_VAL 0xC0ED0000

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#define MS_MGC_MSK 0xffff0000

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* open_tree() flags.

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#define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */

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#define OPEN_TREE_CLOEXEC O_CLOEXEC /* Close the file on execve() */

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* move_mount() flags.

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#define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */

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#define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */

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#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */

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#define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */

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#define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */

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#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */

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#define MOVE_MOUNT__MASK 0x00000077

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* fsopen() flags.

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#define FSOPEN_CLOEXEC 0x00000001

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* fspick() flags.

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#define FSPICK_CLOEXEC 0x00000001

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#define FSPICK_SYMLINK_NOFOLLOW 0x00000002

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#define FSPICK_NO_AUTOMOUNT 0x00000004

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#define FSPICK_EMPTY_PATH 0x00000008

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* The type of fsconfig() call made.

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enum fsconfig_command {

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FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */

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FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */

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FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */

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FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */

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FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */

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FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */

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FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */

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FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */

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};

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* fsmount() flags.

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#define FSMOUNT_CLOEXEC 0x00000001

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* Mount attributes.

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#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */

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#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */

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#define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */

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#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */

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#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */

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#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */

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#define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */

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#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */

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#define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */

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#endif /* _LINUX_MOUNT_H */

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