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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 */ |