diff options
Diffstat (limited to 'include/uapi/linux/ext4.h')
| -rw-r--r-- | include/uapi/linux/ext4.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/include/uapi/linux/ext4.h b/include/uapi/linux/ext4.h new file mode 100644 index 000000000000..411dcc1e4a35 --- /dev/null +++ b/include/uapi/linux/ext4.h @@ -0,0 +1,170 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ + +#ifndef _UAPI_LINUX_EXT4_H +#define _UAPI_LINUX_EXT4_H +#include <linux/fiemap.h> +#include <linux/fs.h> +#include <linux/ioctl.h> +#include <linux/types.h> + +/* + * 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 */ |