/* * volume_id - reads filesystem label and uuid * * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> * Copyright (C) 2005 Tobias Klauser <tklauser@access.unizh.ch> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "volume_id_internal.h" struct reiserfs_super_block { uint32_t blocks_count; uint32_t free_blocks; uint32_t root_block; uint32_t journal_block; uint32_t journal_dev; uint32_t orig_journal_size; uint32_t dummy2[5]; uint16_t blocksize; uint16_t dummy3[3]; uint8_t magic[12]; uint32_t dummy4[5]; uint8_t uuid[16]; uint8_t label[16]; } __attribute__((__packed__)); struct reiser4_super_block { uint8_t magic[16]; uint16_t dummy[2]; uint8_t uuid[16]; uint8_t label[16]; uint64_t dummy2; } __attribute__((__packed__)); #define REISERFS1_SUPERBLOCK_OFFSET 0x2000 #define REISERFS_SUPERBLOCK_OFFSET 0x10000 int volume_id_probe_reiserfs(struct volume_id *id /*,uint64_t off*/) { #define off ((uint64_t)0) struct reiserfs_super_block *rs; struct reiser4_super_block *rs4; dbg("reiserfs: probing at offset 0x%llx", (unsigned long long) off); rs = volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200); if (rs == NULL) return -1; if (memcmp(rs->magic, "ReIsErFs", 8) == 0) { dbg("reiserfs: ReIsErFs, no label"); // strcpy(id->type_version, "3.5"); goto found; } if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) { dbg("reiserfs: ReIsEr2Fs"); // strcpy(id->type_version, "3.6"); goto found_label; } if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) { dbg("reiserfs: ReIsEr3Fs"); // strcpy(id->type_version, "JR"); goto found_label; } rs4 = (struct reiser4_super_block *) rs; if (memcmp(rs4->magic, "ReIsEr4", 7) == 0) { // strcpy(id->type_version, "4"); // volume_id_set_label_raw(id, rs4->label, 16); volume_id_set_label_string(id, rs4->label, 16); volume_id_set_uuid(id, rs4->uuid, UUID_DCE); dbg("reiserfs: ReIsEr4, label '%s' uuid '%s'", id->label, id->uuid); goto found; } rs = volume_id_get_buffer(id, off + REISERFS1_SUPERBLOCK_OFFSET, 0x200); if (rs == NULL) return -1; if (memcmp(rs->magic, "ReIsErFs", 8) == 0) { dbg("reiserfs: ReIsErFs, no label"); // strcpy(id->type_version, "3.5"); goto found; } dbg("reiserfs: no signature found"); return -1; found_label: // volume_id_set_label_raw(id, rs->label, 16); volume_id_set_label_string(id, rs->label, 16); volume_id_set_uuid(id, rs->uuid, UUID_DCE); dbg("reiserfs: label '%s' uuid '%s'", id->label, id->uuid); found: // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); // id->type = "reiserfs"; return 0; }