| /* 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 <mfasheh@suse.com> |
| * Kalpak Shah <kalpak.shah@sun.com> |
| * Andreas Dilger <adilger@sun.com> |
| */ |
| |
| #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[]; /* 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 */ |