scrub/filemap.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  */
   6 #ifndef XFS_SCRUB_FILEMAP_H_
   7 #define XFS_SCRUB_FILEMAP_H_
   8
   9 /* inode fork block mapping */
  10 struct file_bmap {
  11         uint64_t        bm_offset;      /* file offset of segment in bytes */
  12         uint64_t        bm_physical;    /* physical starting byte  */
  13         uint64_t        bm_length;      /* length of segment, bytes */
  14         uint32_t        bm_flags;       /* output flags */
  15 };
  16
  17 /*
  18  * Visit each inode fork mapping.  Return 0 to continue iteration or a positive
  19  * error code to stop iterating and return to the caller.
  20  */
  21 typedef int (*scrub_bmap_iter_fn)(struct scrub_ctx *ctx, int fd, int whichfork,
  22                 struct fsxattr *fsx, struct file_bmap *bmap, void *arg);
  23
  24 int scrub_iterate_filemaps(struct scrub_ctx *ctx, int fd, int whichfork,
  25                 struct file_bmap *key, scrub_bmap_iter_fn fn, void *arg);
  26
  27 #endif /* XFS_SCRUB_FILEMAP_H_ */