fs/xfs/scrub/xfblob.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2021-2024 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <djwong@kernel.org>
   5  */
   6 #ifndef __XFS_SCRUB_XFBLOB_H__
   7 #define __XFS_SCRUB_XFBLOB_H__
   8
   9 struct xfblob {
  10         struct xfile    *xfile;
  11         loff_t          last_offset;
  12 };
  13
  14 typedef loff_t          xfblob_cookie;
  15
  16 int xfblob_create(const char *descr, struct xfblob **blobp);
  17 void xfblob_destroy(struct xfblob *blob);
  18 int xfblob_load(struct xfblob *blob, xfblob_cookie cookie, void *ptr,
  19                 uint32_t size);
  20 int xfblob_store(struct xfblob *blob, xfblob_cookie *cookie, const void *ptr,
  21                 uint32_t size);
  22 int xfblob_free(struct xfblob *blob, xfblob_cookie cookie);
  23 unsigned long long xfblob_bytes(struct xfblob *blob);
  24 void xfblob_truncate(struct xfblob *blob);
  25
  26 static inline int
  27 xfblob_storename(
  28         struct xfblob           *blob,
  29         xfblob_cookie           *cookie,
  30         const struct xfs_name   *xname)
  31 {
  32         return xfblob_store(blob, cookie, xname->name, xname->len);
  33 }
  34
  35 static inline int
  36 xfblob_loadname(
  37         struct xfblob           *blob,
  38         xfblob_cookie           cookie,
  39         struct xfs_name         *xname,
  40         uint32_t                size)
  41 {
  42         int ret = xfblob_load(blob, cookie, (void *)xname->name, size);
  43         if (ret)
  44                 return ret;
  45
  46         xname->len = size;
  47         return 0;
  48 }
  49
  50 #endif /* __XFS_SCRUB_XFBLOB_H__ */