LCOV - code coverage report
Current view: top level - include/linux - fiemap.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 8 8 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       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             : 
      11             : #ifndef _LINUX_FIEMAP_H
      12             : #define _LINUX_FIEMAP_H
      13             : 
      14             : #include <linux/types.h>
      15             : 
      16             : struct fiemap_extent {
      17             :         __u64 fe_logical;  /* logical offset in bytes for the start of
      18             :                             * the extent from the beginning of the file */
      19             :         __u64 fe_physical; /* physical offset in bytes for the start
      20             :                             * of the extent from the beginning of the disk */
      21             :         __u64 fe_length;   /* length in bytes for this extent */
      22             :         __u64 fe_reserved64[2];
      23             :         __u32 fe_flags;    /* FIEMAP_EXTENT_* flags for this extent */
      24             :         __u32 fe_reserved[3];
      25             : };
      26             : 
      27             : struct fiemap {
      28             :         __u64 fm_start;         /* logical offset (inclusive) at
      29             :                                  * which to start mapping (in) */
      30             :         __u64 fm_length;        /* logical length of mapping which
      31             :                                  * userspace wants (in) */
      32             :         __u32 fm_flags;         /* FIEMAP_FLAG_* flags for request (in/out) */
      33             :         __u32 fm_mapped_extents;/* number of extents that were mapped (out) */
      34             :         __u32 fm_extent_count;  /* size of fm_extents array (in) */
      35             :         __u32 fm_reserved;
      36             :         struct fiemap_extent fm_extents[0]; /* array of mapped extents (out) */
      37             : };
      38           1 : 
      39           1 : #define FIEMAP_MAX_OFFSET       (~0ULL)
      40           1 : 
      41           1 : #define FIEMAP_FLAG_SYNC        0x00000001 /* sync file data before map */
      42           1 : #define FIEMAP_FLAG_XATTR       0x00000002 /* map extended attribute tree */
      43           1 : 
      44           1 : #define FIEMAP_FLAGS_COMPAT     (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR)
      45           1 : 
      46             : #define FIEMAP_EXTENT_LAST              0x00000001 /* Last extent in file. */
      47             : #define FIEMAP_EXTENT_UNKNOWN           0x00000002 /* Data location unknown. */
      48             : #define FIEMAP_EXTENT_DELALLOC          0x00000004 /* Location still pending.
      49             :                                                     * Sets EXTENT_UNKNOWN. */
      50             : #define FIEMAP_EXTENT_ENCODED           0x00000008 /* Data can not be read
      51             :                                                     * while fs is unmounted */
      52             : #define FIEMAP_EXTENT_DATA_ENCRYPTED    0x00000080 /* Data is encrypted by fs.
      53             :                                                     * Sets EXTENT_NO_BYPASS. */
      54             : #define FIEMAP_EXTENT_NOT_ALIGNED       0x00000100 /* Extent offsets may not be
      55             :                                                     * block aligned. */
      56             : #define FIEMAP_EXTENT_DATA_INLINE       0x00000200 /* Data mixed with metadata.
      57             :                                                     * Sets EXTENT_NOT_ALIGNED.*/
      58             : #define FIEMAP_EXTENT_DATA_TAIL         0x00000400 /* Multiple files in block.
      59             :                                                     * Sets EXTENT_NOT_ALIGNED.*/
      60             : #define FIEMAP_EXTENT_UNWRITTEN         0x00000800 /* Space allocated, but
      61             :                                                     * no data (i.e. zero). */
      62             : #define FIEMAP_EXTENT_MERGED            0x00001000 /* File does not natively
      63             :                                                     * support extents. Result
      64             :                                                     * merged for efficiency. */
      65             : #define FIEMAP_EXTENT_SHARED            0x00002000 /* Space shared with other
      66             :                                                     * files. */
      67             : 
      68             : #endif /* _LINUX_FIEMAP_H */

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