| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | |
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| 3 | #ifndef _UAPI_LINUX_EXT4_H |
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| 4 | #define _UAPI_LINUX_EXT4_H |
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| 5 | #include <linux/fiemap.h> |
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| 6 | #include <linux/fs.h> |
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| 7 | #include <linux/ioctl.h> |
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| 8 | #include <linux/types.h> |
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| 9 | |
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| 10 | /* |
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| 11 | * ext4-specific ioctl commands |
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| 12 | */ |
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| 13 | #define EXT4_IOC_GETVERSION _IOR('f', 3, long) |
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| 14 | #define EXT4_IOC_SETVERSION _IOW('f', 4, long) |
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| 15 | #define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION |
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| 16 | #define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION |
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| 17 | #define EXT4_IOC_GETRSVSZ _IOR('f', 5, long) |
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| 18 | #define EXT4_IOC_SETRSVSZ _IOW('f', 6, long) |
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| 19 | #define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) |
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| 20 | #define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) |
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| 21 | #define EXT4_IOC_MIGRATE _IO('f', 9) |
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| 22 | /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */ |
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| 23 | /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */ |
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| 24 | #define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) |
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| 25 | #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) |
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| 26 | #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64) |
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| 27 | #define EXT4_IOC_SWAP_BOOT _IO('f', 17) |
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| 28 | #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18) |
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| 29 | /* ioctl codes 19--39 are reserved for fscrypt */ |
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| 30 | #define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40) |
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| 31 | #define EXT4_IOC_GETSTATE _IOW('f', 41, __u32) |
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| 32 | #define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap) |
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| 33 | #define EXT4_IOC_CHECKPOINT _IOW('f', 43, __u32) |
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| 34 | #define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) |
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| 35 | #define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) |
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| 36 | |
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| 37 | #define EXT4_IOC_SHUTDOWN _IOR('X', 125, __u32) |
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| 38 | |
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| 39 | /* |
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| 40 | * ioctl commands in 32 bit emulation |
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| 41 | */ |
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| 42 | #define EXT4_IOC32_GETVERSION _IOR('f', 3, int) |
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| 43 | #define EXT4_IOC32_SETVERSION _IOW('f', 4, int) |
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| 44 | #define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int) |
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| 45 | #define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int) |
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| 46 | #define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) |
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| 47 | #define EXT4_IOC32_GROUP_ADD _IOW('f', 8, struct compat_ext4_new_group_input) |
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| 48 | #define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION |
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| 49 | #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION |
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| 50 | |
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| 51 | /* |
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| 52 | * Flags returned by EXT4_IOC_GETSTATE |
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| 53 | * |
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| 54 | * We only expose to userspace a subset of the state flags in |
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| 55 | * i_state_flags |
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| 56 | */ |
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| 57 | #define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001 |
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| 58 | #define EXT4_STATE_FLAG_NEW 0x00000002 |
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| 59 | #define EXT4_STATE_FLAG_NEWENTRY 0x00000004 |
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| 60 | #define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008 |
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| 61 | |
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| 62 | /* |
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| 63 | * Flags for ioctl EXT4_IOC_CHECKPOINT |
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| 64 | */ |
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| 65 | #define EXT4_IOC_CHECKPOINT_FLAG_DISCARD 0x1 |
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| 66 | #define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT 0x2 |
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| 67 | #define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN 0x4 |
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| 68 | #define EXT4_IOC_CHECKPOINT_FLAG_VALID (EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \ |
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| 69 | EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \ |
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| 70 | EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN) |
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| 71 | |
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| 72 | /* |
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| 73 | * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID |
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| 74 | */ |
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| 75 | struct fsuuid { |
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| 76 | __u32 fsu_len; |
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| 77 | __u32 fsu_flags; |
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| 78 | __u8 fsu_uuid[]; |
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| 79 | }; |
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| 80 | |
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| 81 | /* |
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| 82 | * Structure for EXT4_IOC_MOVE_EXT |
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| 83 | */ |
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| 84 | struct move_extent { |
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| 85 | __u32 reserved; /* should be zero */ |
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| 86 | __u32 donor_fd; /* donor file descriptor */ |
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| 87 | __u64 orig_start; /* logical start offset in block for orig */ |
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| 88 | __u64 donor_start; /* logical start offset in block for donor */ |
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| 89 | __u64 len; /* block length to be moved */ |
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| 90 | __u64 moved_len; /* moved block length */ |
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| 91 | }; |
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| 92 | |
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| 93 | /* |
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| 94 | * Flags used by EXT4_IOC_SHUTDOWN |
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| 95 | */ |
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| 96 | #define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */ |
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| 97 | #define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */ |
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| 98 | #define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */ |
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| 99 | |
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| 100 | /* Used to pass group descriptor data when online resize is done */ |
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| 101 | struct ext4_new_group_input { |
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| 102 | __u32 group; /* Group number for this data */ |
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| 103 | __u64 block_bitmap; /* Absolute block number of block bitmap */ |
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| 104 | __u64 inode_bitmap; /* Absolute block number of inode bitmap */ |
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| 105 | __u64 inode_table; /* Absolute block number of inode table start */ |
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| 106 | __u32 blocks_count; /* Total number of blocks in this group */ |
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| 107 | __u16 reserved_blocks; /* Number of reserved blocks in this group */ |
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| 108 | __u16 unused; |
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| 109 | }; |
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| 110 | |
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| 111 | /* |
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| 112 | * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag. |
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| 113 | * It indicates that the entry in extent status cache is for a hole. |
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| 114 | */ |
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| 115 | #define EXT4_FIEMAP_EXTENT_HOLE 0x08000000 |
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| 116 | |
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| 117 | #endif /* _UAPI_LINUX_EXT4_H */ |
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| 118 | |
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