From 2db154b3ea8e14b04fee23e3fdfd5e9d17fbc6ae Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 5 Nov 2018 17:40:30 +0000 Subject: vfs: syscall: Add move_mount(2) to move mounts around Add a move_mount() system call that will move a mount from one place to another and, in the next commit, allow to attach an unattached mount tree. The new system call looks like the following: int move_mount(int from_dfd, const char *from_path, int to_dfd, const char *to_path, unsigned int flags); Signed-off-by: David Howells cc: linux-api@vger.kernel.org Signed-off-by: Al Viro --- include/uapi/linux/mount.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/mount.h b/include/uapi/linux/mount.h index fd7ae2e7eccf..3634e065836c 100644 --- a/include/uapi/linux/mount.h +++ b/include/uapi/linux/mount.h @@ -61,4 +61,15 @@ #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 + #endif /* _UAPI_LINUX_MOUNT_H */ -- cgit v1.2.3