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unused_hpfs.c 1.6 KB

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  1. /*
  2. * volume_id - reads filesystem label and uuid
  3. *
  4. * Copyright (C) 2005 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. //config:### config FEATURE_VOLUMEID_HPFS
  21. //config:### bool "hpfs filesystem"
  22. //config:### default y
  23. //config:### depends on VOLUMEID
  24. //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_HPFS) += hpfs.o
  25. #include "volume_id_internal.h"
  26. struct hpfs_super {
  27. uint8_t magic[4];
  28. uint8_t version;
  29. } PACKED;
  30. #define HPFS_SUPERBLOCK_OFFSET 0x2000
  31. int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
  32. {
  33. struct hpfs_super *hs;
  34. dbg("probing at offset 0x%llx", (unsigned long long) off);
  35. hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
  36. if (hs == NULL)
  37. return -1;
  38. if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
  39. // sprintf(id->type_version, "%u", hs->version);
  40. // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  41. // id->type = "hpfs";
  42. return 0;
  43. }
  44. return -1;
  45. }