/* * volume_id - reads filesystem label and uuid * * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> * * 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 jfs_super_block { uint8_t magic[4]; uint32_t version; uint64_t size; uint32_t bsize; uint32_t dummy1; uint32_t pbsize; uint32_t dummy2[27]; uint8_t uuid[16]; uint8_t label[16]; uint8_t loguuid[16]; } PACKED; #define JFS_SUPERBLOCK_OFFSET 0x8000 int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/) { #define off ((uint64_t)0) struct jfs_super_block *js; dbg("probing at offset 0x%llx", (unsigned long long) off); js = volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200); if (js == NULL) return -1; if (memcmp(js->magic, "JFS1", 4) != 0) return -1; // volume_id_set_label_raw(id, js->label, 16); volume_id_set_label_string(id, js->label, 16); volume_id_set_uuid(id, js->uuid, UUID_DCE); // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); // id->type = "jfs"; return 0; }