From 519fe1bae7e20fc4e7f179d50b6102b49980e85d Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Sun, 2 Apr 2023 11:37:42 +0900 Subject: ext4: Add a uapi header for ext4 userspace APIs Create a uapi header include/uapi/linux/ext4.h, move the ioctls and associated data structures to the uapi header, and include it from fs/ext4/ext4.h. Signed-off-by: Josh Triplett Link: https://lore.kernel.org/r/680175260970d977d16b5cc7e7606483ec99eb63.1680402881.git.josh@joshtriplett.org Signed-off-by: Theodore Ts'o --- fs/ext4/ext4.h | 91 +--------------------------------------------------------- 1 file changed, 1 insertion(+), 90 deletions(-) (limited to 'fs') diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 271d9661ce82..18cb2680dc39 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -40,6 +40,7 @@ #ifdef __KERNEL__ #include #endif +#include #include #include @@ -591,17 +592,6 @@ static inline void ext4_check_flag_values(void) CHECK_FLAG_VALUE(RESERVED); } -/* Used to pass group descriptor data when online resize is done */ -struct ext4_new_group_input { - __u32 group; /* Group number for this data */ - __u64 block_bitmap; /* Absolute block number of block bitmap */ - __u64 inode_bitmap; /* Absolute block number of inode bitmap */ - __u64 inode_table; /* Absolute block number of inode table start */ - __u32 blocks_count; /* Total number of blocks in this group */ - __u16 reserved_blocks; /* Number of reserved blocks in this group */ - __u16 unused; -}; - #if defined(__KERNEL__) && defined(CONFIG_COMPAT) struct compat_ext4_new_group_input { u32 group; @@ -698,70 +688,6 @@ enum { #define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020 #define EXT4_FREE_BLOCKS_RERESERVE_CLUSTER 0x0040 -/* - * ioctl commands - */ -#define EXT4_IOC_GETVERSION _IOR('f', 3, long) -#define EXT4_IOC_SETVERSION _IOW('f', 4, long) -#define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION -#define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION -#define EXT4_IOC_GETRSVSZ _IOR('f', 5, long) -#define EXT4_IOC_SETRSVSZ _IOW('f', 6, long) -#define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) -#define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) -#define EXT4_IOC_MIGRATE _IO('f', 9) - /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */ - /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */ -#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) -#define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) -#define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64) -#define EXT4_IOC_SWAP_BOOT _IO('f', 17) -#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18) -/* ioctl codes 19--39 are reserved for fscrypt */ -#define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40) -#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32) -#define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap) -#define EXT4_IOC_CHECKPOINT _IOW('f', 43, __u32) -#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) -#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) - -#define EXT4_IOC_SHUTDOWN _IOR ('X', 125, __u32) - -/* - * Flags for going down operation - */ -#define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */ -#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */ -#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */ - -/* - * Flags returned by EXT4_IOC_GETSTATE - * - * We only expose to userspace a subset of the state flags in - * i_state_flags - */ -#define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001 -#define EXT4_STATE_FLAG_NEW 0x00000002 -#define EXT4_STATE_FLAG_NEWENTRY 0x00000004 -#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008 - -/* flags for ioctl EXT4_IOC_CHECKPOINT */ -#define EXT4_IOC_CHECKPOINT_FLAG_DISCARD 0x1 -#define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT 0x2 -#define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN 0x4 -#define EXT4_IOC_CHECKPOINT_FLAG_VALID (EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \ - EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \ - EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN) - -/* - * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID - */ -struct fsuuid { - __u32 fsu_len; - __u32 fsu_flags; - __u8 fsu_uuid[]; -}; - #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* * ioctl commands in 32 bit emulation @@ -776,12 +702,6 @@ struct fsuuid { #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION #endif -/* - * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag. - * It indicates that the entry in extent status cache is for a hole. - */ -#define EXT4_FIEMAP_EXTENT_HOLE 0x08000000 - /* Max physical block we can address w/o extents */ #define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF @@ -852,15 +772,6 @@ struct ext4_inode { __le32 i_projid; /* Project ID */ }; -struct move_extent { - __u32 reserved; /* should be zero */ - __u32 donor_fd; /* donor file descriptor */ - __u64 orig_start; /* logical start offset in block for orig */ - __u64 donor_start; /* logical start offset in block for donor */ - __u64 len; /* block length to be moved */ - __u64 moved_len; /* moved block length */ -}; - #define EXT4_EPOCH_BITS 2 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1) #define EXT4_NSEC_MASK (~0UL << EXT4_EPOCH_BITS) -- cgit v1.2.3