projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | * FS_IOC_FIEMAP ioctl infrastructure. | |
| 3 | * | |
| 4 | * Some portions copyright (C) 2007 Cluster File Systems, Inc | |
| 5 | * | |
| 6 | * Authors: Mark Fasheh <mfasheh@suse.com> | |
| 7 | * Kalpak Shah <kalpak.shah@sun.com> | |
| 8 | * Andreas Dilger <adilger@sun.com> | |
| 9 | */ | |
| 10 | #ifndef _LINUX_FIEMAP_H | |
| 11 | #define _LINUX_FIEMAP_H | |
| 12 | ||
| 13 | #if defined(__linux__) | |
| 14 | #include <linux/types.h> | |
| 15 | #elif defined(__FreeBSD_) | |
| 16 | #include <sys/types.h> | |
| 17 | #endif | |
| 18 | ||
| 19 | #include "include/int_types.h" | |
| 20 | ||
| 21 | struct fiemap_extent { | |
| 22 | __u64 fe_logical; /* logical offset in bytes for the start of | |
| 23 | * the extent from the beginning of the file */ | |
| 24 | __u64 fe_physical; /* physical offset in bytes for the start | |
| 25 | * of the extent from the beginning of the disk */ | |
| 26 | __u64 fe_length; /* length in bytes for this extent */ | |
| 27 | __u64 fe_reserved64[2]; | |
| 28 | __u32 fe_flags; /* FIEMAP_EXTENT_* flags for this extent */ | |
| 29 | __u32 fe_reserved[3]; | |
| 30 | }; | |
| 31 | ||
| 32 | struct fiemap { | |
| 33 | __u64 fm_start; /* logical offset (inclusive) at | |
| 34 | * which to start mapping (in) */ | |
| 35 | __u64 fm_length; /* logical length of mapping which | |
| 36 | * userspace wants (in) */ | |
| 37 | __u32 fm_flags; /* FIEMAP_FLAG_* flags for request (in/out) */ | |
| 38 | __u32 fm_mapped_extents;/* number of extents that were mapped (out) */ | |
| 39 | __u32 fm_extent_count; /* size of fm_extents array (in) */ | |
| 40 | __u32 fm_reserved; | |
| 41 | struct fiemap_extent fm_extents[0]; /* array of mapped extents (out) */ | |
| 42 | }; | |
| 43 | ||
| 44 | #define FIEMAP_MAX_OFFSET (~0ULL) | |
| 45 | ||
| 46 | #define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */ | |
| 47 | #define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */ | |
| 48 | ||
| 49 | #define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR) | |
| 50 | ||
| 51 | #define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent in file. */ | |
| 52 | #define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data location unknown. */ | |
| 53 | #define FIEMAP_EXTENT_DELALLOC 0x00000004 /* Location still pending. | |
| 54 | * Sets EXTENT_UNKNOWN. */ | |
| 55 | #define FIEMAP_EXTENT_ENCODED 0x00000008 /* Data can not be read | |
| 56 | * while fs is unmounted */ | |
| 57 | #define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is encrypted by fs. | |
| 58 | * Sets EXTENT_NO_BYPASS. */ | |
| 59 | #define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent offsets may not be | |
| 60 | * block aligned. */ | |
| 61 | #define FIEMAP_EXTENT_DATA_INLINE 0x00000200 /* Data mixed with metadata. | |
| 62 | * Sets EXTENT_NOT_ALIGNED.*/ | |
| 63 | #define FIEMAP_EXTENT_DATA_TAIL 0x00000400 /* Multiple files in block. | |
| 64 | * Sets EXTENT_NOT_ALIGNED.*/ | |
| 65 | #define FIEMAP_EXTENT_UNWRITTEN 0x00000800 /* Space allocated, but | |
| 66 | * no data (i.e. zero). */ | |
| 67 | #define FIEMAP_EXTENT_MERGED 0x00001000 /* File does not natively | |
| 68 | * support extents. Result | |
| 69 | * merged for efficiency. */ | |
| 70 | #define FIEMAP_EXTENT_SHARED 0x00002000 /* Space shared with other | |
| 71 | * files. */ | |
| 72 | ||
| 73 | #endif /* _LINUX_FIEMAP_H */ |