/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _UAPI_LINUX_EXT4_H #define _UAPI_LINUX_EXT4_H #include #include #include #include /* * ext4-specific 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_GET_TUNE_SB_PARAM _IOR('f', 45, struct ext4_tune_sb_params) #define EXT4_IOC_SET_TUNE_SB_PARAM _IOW('f', 46, struct ext4_tune_sb_params) #define EXT4_IOC_SHUTDOWN _IOR('X', 125, __u32) /* * ioctl commands in 32 bit emulation */ #define EXT4_IOC32_GETVERSION _IOR('f', 3, int) #define EXT4_IOC32_SETVERSION _IOW('f', 4, int) #define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int) #define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int) #define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) #define EXT4_IOC32_GROUP_ADD _IOW('f', 8, struct compat_ext4_new_group_input) #define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION /* * 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[]; }; /* * Structure for EXT4_IOC_MOVE_EXT */ 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 */ }; /* * Flags used by EXT4_IOC_SHUTDOWN */ #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 */ /* 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; }; struct ext4_tune_sb_params { __u32 set_flags; __u32 checkinterval; __u16 errors_behavior; __u16 mnt_count; __u16 max_mnt_count; __u16 raid_stride; __u64 last_check_time; __u64 reserved_blocks; __u64 blocks_count; __u32 default_mnt_opts; __u32 reserved_uid; __u32 reserved_gid; __u32 raid_stripe_width; __u16 encoding; __u16 encoding_flags; __u8 def_hash_alg; __u8 pad_1; __u16 pad_2; __u32 feature_compat; __u32 feature_incompat; __u32 feature_ro_compat; __u32 set_feature_compat_mask; __u32 set_feature_incompat_mask; __u32 set_feature_ro_compat_mask; __u32 clear_feature_compat_mask; __u32 clear_feature_incompat_mask; __u32 clear_feature_ro_compat_mask; __u8 mount_opts[64]; __u8 pad[64]; }; #define EXT4_TUNE_FL_ERRORS_BEHAVIOR 0x00000001 #define EXT4_TUNE_FL_MNT_COUNT 0x00000002 #define EXT4_TUNE_FL_MAX_MNT_COUNT 0x00000004 #define EXT4_TUNE_FL_CHECKINTRVAL 0x00000008 #define EXT4_TUNE_FL_LAST_CHECK_TIME 0x00000010 #define EXT4_TUNE_FL_RESERVED_BLOCKS 0x00000020 #define EXT4_TUNE_FL_RESERVED_UID 0x00000040 #define EXT4_TUNE_FL_RESERVED_GID 0x00000080 #define EXT4_TUNE_FL_DEFAULT_MNT_OPTS 0x00000100 #define EXT4_TUNE_FL_DEF_HASH_ALG 0x00000200 #define EXT4_TUNE_FL_RAID_STRIDE 0x00000400 #define EXT4_TUNE_FL_RAID_STRIPE_WIDTH 0x00000800 #define EXT4_TUNE_FL_MOUNT_OPTS 0x00001000 #define EXT4_TUNE_FL_FEATURES 0x00002000 #define EXT4_TUNE_FL_EDIT_FEATURES 0x00004000 #define EXT4_TUNE_FL_FORCE_FSCK 0x00008000 #define EXT4_TUNE_FL_ENCODING 0x00010000 #define EXT4_TUNE_FL_ENCODING_FLAGS 0x00020000 /* * 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 #endif /* _UAPI_LINUX_EXT4_H */