forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.7 KiB
70 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
|
/* |
|
* FS_IOC_FIEMAP ioctl infrastructure. |
|
* |
|
* Some portions copyright (C) 2007 Cluster File Systems, Inc |
|
* |
|
* Authors: Mark Fasheh <[email protected]> |
|
* Kalpak Shah <[email protected]> |
|
* Andreas Dilger <[email protected]> |
|
*/ |
|
|
|
#ifndef _UAPI_LINUX_FIEMAP_H |
|
#define _UAPI_LINUX_FIEMAP_H |
|
|
|
#include <linux/types.h> |
|
|
|
struct fiemap_extent { |
|
__u64 fe_logical; /* logical offset in bytes for the start of |
|
* the extent from the beginning of the file */ |
|
__u64 fe_physical; /* physical offset in bytes for the start |
|
* of the extent from the beginning of the disk */ |
|
__u64 fe_length; /* length in bytes for this extent */ |
|
__u64 fe_reserved64[2]; |
|
__u32 fe_flags; /* FIEMAP_EXTENT_* flags for this extent */ |
|
__u32 fe_reserved[3]; |
|
}; |
|
|
|
struct fiemap { |
|
__u64 fm_start; /* logical offset (inclusive) at |
|
* which to start mapping (in) */ |
|
__u64 fm_length; /* logical length of mapping which |
|
* userspace wants (in) */ |
|
__u32 fm_flags; /* FIEMAP_FLAG_* flags for request (in/out) */ |
|
__u32 fm_mapped_extents;/* number of extents that were mapped (out) */ |
|
__u32 fm_extent_count; /* size of fm_extents array (in) */ |
|
__u32 fm_reserved; |
|
struct fiemap_extent fm_extents[0]; /* array of mapped extents (out) */ |
|
}; |
|
|
|
#define FIEMAP_MAX_OFFSET (~0ULL) |
|
|
|
#define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */ |
|
#define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */ |
|
#define FIEMAP_FLAG_CACHE 0x00000004 /* request caching of the extents */ |
|
|
|
#define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR) |
|
|
|
#define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent in file. */ |
|
#define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data location unknown. */ |
|
#define FIEMAP_EXTENT_DELALLOC 0x00000004 /* Location still pending. |
|
* Sets EXTENT_UNKNOWN. */ |
|
#define FIEMAP_EXTENT_ENCODED 0x00000008 /* Data can not be read |
|
* while fs is unmounted */ |
|
#define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is encrypted by fs. |
|
* Sets EXTENT_NO_BYPASS. */ |
|
#define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent offsets may not be |
|
* block aligned. */ |
|
#define FIEMAP_EXTENT_DATA_INLINE 0x00000200 /* Data mixed with metadata. |
|
* Sets EXTENT_NOT_ALIGNED.*/ |
|
#define FIEMAP_EXTENT_DATA_TAIL 0x00000400 /* Multiple files in block. |
|
* Sets EXTENT_NOT_ALIGNED.*/ |
|
#define FIEMAP_EXTENT_UNWRITTEN 0x00000800 /* Space allocated, but |
|
* no data (i.e. zero). */ |
|
#define FIEMAP_EXTENT_MERGED 0x00001000 /* File does not natively |
|
* support extents. Result |
|
* merged for efficiency. */ |
|
#define FIEMAP_EXTENT_SHARED 0x00002000 /* Space shared with other |
|
* files. */ |
|
|
|
#endif /* _UAPI_LINUX_FIEMAP_H */
|
|
|