/* 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_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;}; /* * 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 */