cramfs.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 cramfs_super {
  22. uint32_t magic;
  23. uint32_t size;
  24. uint32_t flags;
  25. uint32_t future;
  26. uint8_t signature[16];
  27. struct cramfs_info {
  28. uint32_t crc;
  29. uint32_t edition;
  30. uint32_t blocks;
  31. uint32_t files;
  32. } PACKED info;
  33. uint8_t name[16];
  34. } PACKED;
  35. int FAST_FUNC volume_id_probe_cramfs(struct volume_id *id /*,uint64_t off*/)
  36. {
  37. #define off ((uint64_t)0)
  38. struct cramfs_super *cs;
  39. dbg("probing at offset 0x%llx", (unsigned long long) off);
  40. cs = volume_id_get_buffer(id, off, 0x200);
  41. if (cs == NULL)
  42. return -1;
  43. if (cs->magic == cpu_to_be32(0x453dcd28)) {
  44. // volume_id_set_label_raw(id, cs->name, 16);
  45. volume_id_set_label_string(id, cs->name, 16);
  46. // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  47. // id->type = "cramfs";
  48. return 0;
  49. }
  50. return -1;
  51. }