1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | |
3 | #ifndef _UAPI_LINUX_EXT4_H |
4 | #define _UAPI_LINUX_EXT4_H |
5 | #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 commands |
12 | */ |
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_GETVERSION |
16 | #define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION |
17 | #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 emulation |
41 | */ |
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_GETVERSION |
49 | #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION |
50 | |
51 | /* |
52 | * Flags returned by EXT4_IOC_GETSTATE |
53 | * |
54 | * We only expose to userspace a subset of the state flags in |
55 | * i_state_flags |
56 | */ |
57 | #define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001 |
58 | #define EXT4_STATE_FLAG_NEW 0x00000002 |
59 | #define EXT4_STATE_FLAG_NEWENTRY 0x00000004 |
60 | #define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008 |
61 | |
62 | /* |
63 | * Flags for ioctl EXT4_IOC_CHECKPOINT |
64 | */ |
65 | #define EXT4_IOC_CHECKPOINT_FLAG_DISCARD 0x1 |
66 | #define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT 0x2 |
67 | #define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN 0x4 |
68 | #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_SETFSUUID |
74 | */ |
75 | struct fsuuid { |
76 | __u32 fsu_len; |
77 | __u32 fsu_flags; |
78 | __u8 fsu_uuid[]; |
79 | }; |
80 | |
81 | /* |
82 | * Structure for EXT4_IOC_MOVE_EXT |
83 | */ |
84 | struct 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_SHUTDOWN |
95 | */ |
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 */ |
101 | struct 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 0x08000000 |
116 | |
117 | #endif /* _UAPI_LINUX_EXT4_H */ |
118 | |