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romfs.c 1.5 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 romfs_super {
  22. uint8_t magic[8];
  23. uint32_t size;
  24. uint32_t checksum;
  25. uint8_t name[];
  26. } PACKED;
  27. int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/)
  28. {
  29. #define off ((uint64_t)0)
  30. struct romfs_super *rfs;
  31. dbg("probing at offset 0x%llx", (unsigned long long) off);
  32. rfs = volume_id_get_buffer(id, off, 0x200);
  33. if (rfs == NULL)
  34. return -1;
  35. if (memcmp(rfs->magic, "-rom1fs-", 4) == 0) {
  36. size_t len = strlen((char *)rfs->name);
  37. if (len) {
  38. // volume_id_set_label_raw(id, rfs->name, len);
  39. volume_id_set_label_string(id, rfs->name, len);
  40. }
  41. // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  42. // id->type = "romfs";
  43. return 0;
  44. }
  45. return -1;
  46. }