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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2 3#ifndef _UAPI_LINUX_EXT4_H4#define _UAPI_LINUX_EXT4_H5#include <linux/fiemap.h>6#include <linux/fs.h>7#include <linux/ioctl.h>8#include <linux/types.h>9 10/*11 * ext4-specific ioctl commands12 */13#define EXT4_IOC_GETVERSION _IOR('f', 3, long)14#define EXT4_IOC_SETVERSION _IOW('f', 4, long)15#define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION16#define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION17#define EXT4_IOC_GETRSVSZ _IOR('f', 5, long)18#define EXT4_IOC_SETRSVSZ _IOW('f', 6, long)19#define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)20#define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input)21#define EXT4_IOC_MIGRATE _IO('f', 9)22 /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */23 /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */24#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12)25#define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent)26#define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)27#define EXT4_IOC_SWAP_BOOT _IO('f', 17)28#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)29/* ioctl codes 19--39 are reserved for fscrypt */30#define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40)31#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32)32#define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap)33#define EXT4_IOC_CHECKPOINT _IOW('f', 43, __u32)34#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid)35#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid)36 37#define EXT4_IOC_SHUTDOWN _IOR('X', 125, __u32)38 39/*40 * ioctl commands in 32 bit emulation41 */42#define EXT4_IOC32_GETVERSION _IOR('f', 3, int)43#define EXT4_IOC32_SETVERSION _IOW('f', 4, int)44#define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int)45#define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int)46#define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)47#define EXT4_IOC32_GROUP_ADD _IOW('f', 8, struct compat_ext4_new_group_input)48#define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION49#define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION50 51/*52 * Flags returned by EXT4_IOC_GETSTATE53 *54 * We only expose to userspace a subset of the state flags in55 * i_state_flags56 */57#define EXT4_STATE_FLAG_EXT_PRECACHED 0x0000000158#define EXT4_STATE_FLAG_NEW 0x0000000259#define EXT4_STATE_FLAG_NEWENTRY 0x0000000460#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x0000000861 62/*63 * Flags for ioctl EXT4_IOC_CHECKPOINT64 */65#define EXT4_IOC_CHECKPOINT_FLAG_DISCARD 0x166#define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT 0x267#define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN 0x468#define EXT4_IOC_CHECKPOINT_FLAG_VALID (EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \69 EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \70 EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN)71 72/*73 * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID74 */75struct fsuuid {76 __u32 fsu_len;77 __u32 fsu_flags;78 __u8 fsu_uuid[];79};80 81/*82 * Structure for EXT4_IOC_MOVE_EXT83 */84struct move_extent {85 __u32 reserved; /* should be zero */86 __u32 donor_fd; /* donor file descriptor */87 __u64 orig_start; /* logical start offset in block for orig */88 __u64 donor_start; /* logical start offset in block for donor */89 __u64 len; /* block length to be moved */90 __u64 moved_len; /* moved block length */91};92 93/*94 * Flags used by EXT4_IOC_SHUTDOWN95 */96#define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */97#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */98#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */99 100/* Used to pass group descriptor data when online resize is done */101struct ext4_new_group_input {102 __u32 group; /* Group number for this data */103 __u64 block_bitmap; /* Absolute block number of block bitmap */104 __u64 inode_bitmap; /* Absolute block number of inode bitmap */105 __u64 inode_table; /* Absolute block number of inode table start */106 __u32 blocks_count; /* Total number of blocks in this group */107 __u16 reserved_blocks; /* Number of reserved blocks in this group */108 __u16 unused;109};110 111/*112 * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag.113 * It indicates that the entry in extent status cache is for a hole.114 */115#define EXT4_FIEMAP_EXTENT_HOLE 0x08000000116 117#endif /* _UAPI_LINUX_EXT4_H */118