xfs.c 1.6 KB

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  1. /*
  2. * volume_id - reads filesystem label and uuid
  3. *
  4. * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
  5. *
  6. * This library is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU Lesser General Public
  8. * License as published by the Free Software Foundation; either
  9. * version 2.1 of the License, or (at your option) any later version.
  10. *
  11. * This library is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14. * Lesser General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU Lesser General Public
  17. * License along with this library; if not, write to the Free Software
  18. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. */
  20. #include "volume_id_internal.h"
  21. struct xfs_super_block {
  22. uint8_t magic[4];
  23. uint32_t blocksize;
  24. uint64_t dblocks;
  25. uint64_t rblocks;
  26. uint32_t dummy1[2];
  27. uint8_t uuid[16];
  28. uint32_t dummy2[15];
  29. uint8_t fname[12];
  30. uint32_t dummy3[2];
  31. uint64_t icount;
  32. uint64_t ifree;
  33. uint64_t fdblocks;
  34. } __attribute__((__packed__));
  35. int volume_id_probe_xfs(struct volume_id *id, uint64_t off)
  36. {
  37. struct xfs_super_block *xs;
  38. dbg("probing at offset 0x%llx", (unsigned long long) off);
  39. xs = volume_id_get_buffer(id, off, 0x200);
  40. if (xs == NULL)
  41. return -1;
  42. if (memcmp(xs->magic, "XFSB", 4) != 0)
  43. return -1;
  44. // volume_id_set_label_raw(id, xs->fname, 12);
  45. volume_id_set_label_string(id, xs->fname, 12);
  46. volume_id_set_uuid(id, xs->uuid, UUID_DCE);
  47. // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  48. // id->type = "xfs";
  49. return 0;
  50. }