diff options
Diffstat (limited to 'extras/volume_id/lib/lvm.c')
-rw-r--r-- | extras/volume_id/lib/lvm.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/extras/volume_id/lib/lvm.c b/extras/volume_id/lib/lvm.c deleted file mode 100644 index a3f409a0ee..0000000000 --- a/extras/volume_id/lib/lvm.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * volume_id - reads filesystem label and uuid - * - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE 1 -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <ctype.h> - -#include "libvolume_id.h" -#include "libvolume_id-private.h" - -struct lvm1_super_block { - uint8_t id[2]; -} PACKED; - -struct lvm2_super_block { - uint8_t id[8]; - uint64_t sector_xl; - uint32_t crc_xl; - uint32_t offset_xl; - uint8_t type[8]; -} PACKED; - -struct lvm2_pv_header { - uint8_t id[32]; - uint64_t devsize_xl; -} PACKED; - -#define LVM1_SB_OFF 0x400 -#define LVM1_MAGIC "HM" - -int volume_id_probe_lvm1(struct volume_id *id, uint64_t off, uint64_t size) -{ - const uint8_t *buf; - struct lvm1_super_block *lvm; - - info("probing at offset 0x%" PRIx64 "\n", off); - - buf = volume_id_get_buffer(id, off + LVM1_SB_OFF, 0x800); - if (buf == NULL) - return -1; - - lvm = (struct lvm1_super_block *) buf; - - if (memcmp(lvm->id, LVM1_MAGIC, 2) != 0) - return -1; - - volume_id_set_usage(id, VOLUME_ID_RAID); - id->type = "LVM1_member"; - - return 0; -} - -#define LVM2_LABEL_ID "LABELONE" -#define LVM2LABEL_SCAN_SECTORS 4 - -int volume_id_probe_lvm2(struct volume_id *id, uint64_t off, uint64_t size) -{ - const uint8_t *buf; - unsigned int soff; - struct lvm2_super_block *lvm; - struct lvm2_pv_header *pvhdr; - - dbg("probing at offset 0x%" PRIx64 "\n", off); - - buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200); - if (buf == NULL) - return -1; - - - for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) { - lvm = (struct lvm2_super_block *) &buf[soff]; - - if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0) - goto found; - } - - return -1; - -found: - dbg("found at offset 0x%x (pv hdr offset 0x%x)\n", - soff, cpu_to_le32(lvm->offset_xl)); - soff += cpu_to_le32(lvm->offset_xl); - pvhdr = (struct lvm2_pv_header *) &buf[soff]; - memcpy(id->type_version, lvm->type, 8); - volume_id_set_usage(id, VOLUME_ID_RAID); - volume_id_set_uuid(id, pvhdr->id, 0, UUID_LVM); - id->type = "LVM2_member"; - - return 0; -} |