| #ifndef _UAPI_LINUX_MOUNT_H |
| #define _UAPI_LINUX_MOUNT_H |
| |
| #include <linux/types.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_NOSYMFOLLOW 256 /* Do not follow symlinks */ |
| #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 */ |
| #define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */ |
| #define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */ |
| |
| /* |
| * mount_setattr() |
| */ |
| struct mount_attr { |
| __u64 attr_set; |
| __u64 attr_clr; |
| __u64 propagation; |
| __u64 userns_fd; |
| }; |
| |
| /* List of all mount_attr versions. */ |
| #define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */ |
| |
| #endif /* _UAPI_LINUX_MOUNT_H */ |