16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2607ca46eSDavid Howells /* 3607ca46eSDavid Howells * FS_IOC_FIEMAP ioctl infrastructure. 4607ca46eSDavid Howells * 5607ca46eSDavid Howells * Some portions copyright (C) 2007 Cluster File Systems, Inc 6607ca46eSDavid Howells * 7607ca46eSDavid Howells * Authors: Mark Fasheh <mfasheh@suse.com> 8607ca46eSDavid Howells * Kalpak Shah <kalpak.shah@sun.com> 9607ca46eSDavid Howells * Andreas Dilger <adilger@sun.com> 10607ca46eSDavid Howells */ 11607ca46eSDavid Howells 1210c5db28SChristoph Hellwig #ifndef _UAPI_LINUX_FIEMAP_H 1310c5db28SChristoph Hellwig #define _UAPI_LINUX_FIEMAP_H 14607ca46eSDavid Howells 15607ca46eSDavid Howells #include <linux/types.h> 16607ca46eSDavid Howells 17607ca46eSDavid Howells struct fiemap_extent { 18607ca46eSDavid Howells __u64 fe_logical; /* logical offset in bytes for the start of 19607ca46eSDavid Howells * the extent from the beginning of the file */ 20607ca46eSDavid Howells __u64 fe_physical; /* physical offset in bytes for the start 21607ca46eSDavid Howells * of the extent from the beginning of the disk */ 22607ca46eSDavid Howells __u64 fe_length; /* length in bytes for this extent */ 23607ca46eSDavid Howells __u64 fe_reserved64[2]; 24607ca46eSDavid Howells __u32 fe_flags; /* FIEMAP_EXTENT_* flags for this extent */ 25607ca46eSDavid Howells __u32 fe_reserved[3]; 26607ca46eSDavid Howells }; 27607ca46eSDavid Howells 28607ca46eSDavid Howells struct fiemap { 29607ca46eSDavid Howells __u64 fm_start; /* logical offset (inclusive) at 30607ca46eSDavid Howells * which to start mapping (in) */ 31607ca46eSDavid Howells __u64 fm_length; /* logical length of mapping which 32607ca46eSDavid Howells * userspace wants (in) */ 33607ca46eSDavid Howells __u32 fm_flags; /* FIEMAP_FLAG_* flags for request (in/out) */ 34607ca46eSDavid Howells __u32 fm_mapped_extents;/* number of extents that were mapped (out) */ 35607ca46eSDavid Howells __u32 fm_extent_count; /* size of fm_extents array (in) */ 36607ca46eSDavid Howells __u32 fm_reserved; 37*94dfc73eSGustavo A. R. Silva struct fiemap_extent fm_extents[]; /* array of mapped extents (out) */ 38607ca46eSDavid Howells }; 39607ca46eSDavid Howells 40607ca46eSDavid Howells #define FIEMAP_MAX_OFFSET (~0ULL) 41607ca46eSDavid Howells 42607ca46eSDavid Howells #define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */ 43607ca46eSDavid Howells #define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */ 447869a4a6STheodore Ts'o #define FIEMAP_FLAG_CACHE 0x00000004 /* request caching of the extents */ 45607ca46eSDavid Howells 46607ca46eSDavid Howells #define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR) 47607ca46eSDavid Howells 48607ca46eSDavid Howells #define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent in file. */ 49607ca46eSDavid Howells #define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data location unknown. */ 50607ca46eSDavid Howells #define FIEMAP_EXTENT_DELALLOC 0x00000004 /* Location still pending. 51607ca46eSDavid Howells * Sets EXTENT_UNKNOWN. */ 52607ca46eSDavid Howells #define FIEMAP_EXTENT_ENCODED 0x00000008 /* Data can not be read 53607ca46eSDavid Howells * while fs is unmounted */ 54607ca46eSDavid Howells #define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is encrypted by fs. 55607ca46eSDavid Howells * Sets EXTENT_NO_BYPASS. */ 56607ca46eSDavid Howells #define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent offsets may not be 57607ca46eSDavid Howells * block aligned. */ 58607ca46eSDavid Howells #define FIEMAP_EXTENT_DATA_INLINE 0x00000200 /* Data mixed with metadata. 59607ca46eSDavid Howells * Sets EXTENT_NOT_ALIGNED.*/ 60607ca46eSDavid Howells #define FIEMAP_EXTENT_DATA_TAIL 0x00000400 /* Multiple files in block. 61607ca46eSDavid Howells * Sets EXTENT_NOT_ALIGNED.*/ 62607ca46eSDavid Howells #define FIEMAP_EXTENT_UNWRITTEN 0x00000800 /* Space allocated, but 63607ca46eSDavid Howells * no data (i.e. zero). */ 64607ca46eSDavid Howells #define FIEMAP_EXTENT_MERGED 0x00001000 /* File does not natively 65607ca46eSDavid Howells * support extents. Result 66607ca46eSDavid Howells * merged for efficiency. */ 67607ca46eSDavid Howells #define FIEMAP_EXTENT_SHARED 0x00002000 /* Space shared with other 68607ca46eSDavid Howells * files. */ 69607ca46eSDavid Howells 7010c5db28SChristoph Hellwig #endif /* _UAPI_LINUX_FIEMAP_H */ 71