diff options
Diffstat (limited to 'extras/volume_id/lib/linux_raid.c')
| -rw-r--r-- | extras/volume_id/lib/linux_raid.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/extras/volume_id/lib/linux_raid.c b/extras/volume_id/lib/linux_raid.c deleted file mode 100644 index e845570823..0000000000 --- a/extras/volume_id/lib/linux_raid.c +++ /dev/null @@ -1,181 +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 <byteswap.h> - -#include "libvolume_id.h" -#include "libvolume_id-private.h" - -struct mdp0_super_block { - uint32_t md_magic; - uint32_t major_version; - uint32_t minor_version; - uint32_t patch_version; - uint32_t gvalid_words; - uint32_t set_uuid0; - uint32_t ctime; - uint32_t level; - uint32_t size; - uint32_t nr_disks; - uint32_t raid_disks; - uint32_t md_minor; - uint32_t not_persistent; - uint32_t set_uuid1; - uint32_t set_uuid2; - uint32_t set_uuid3; -} PACKED; - -struct mdp1_super_block { - uint32_t magic; - uint32_t major_version; - uint32_t feature_map; - uint32_t pad0; - uint8_t set_uuid[16]; - uint8_t set_name[32]; -} PACKED; - -#define MD_RESERVED_BYTES 0x10000 -#define MD_SB_MAGIC 0xa92b4efc - -static int volume_id_probe_linux_raid0(struct volume_id *id, uint64_t off, uint64_t size) -{ - const uint8_t *buf; - struct mdp0_super_block *mdp0; - union { - uint32_t ints[4]; - uint8_t bytes[16]; - } uuid; - - info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size); - if (size < 0x10000) - return -1; - - buf = volume_id_get_buffer(id, off, 0x800); - if (buf == NULL) - return -1; - mdp0 = (struct mdp0_super_block *) buf; - - if (le32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) { - uuid.ints[0] = bswap_32(mdp0->set_uuid0); - if (le32_to_cpu(mdp0->minor_version >= 90)) { - uuid.ints[1] = bswap_32(mdp0->set_uuid1); - uuid.ints[2] = bswap_32(mdp0->set_uuid2); - uuid.ints[3] = bswap_32(mdp0->set_uuid3); - } else { - uuid.ints[1] = 0; - uuid.ints[2] = 0; - uuid.ints[3] = 0; - } - volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD); - snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u", - le32_to_cpu(mdp0->major_version), - le32_to_cpu(mdp0->minor_version), - le32_to_cpu(mdp0->patch_version)); - } else if (be32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) { - uuid.ints[0] = mdp0->set_uuid0; - if (be32_to_cpu(mdp0->minor_version >= 90)) { - uuid.ints[1] = mdp0->set_uuid1; - uuid.ints[2] = mdp0->set_uuid2; - uuid.ints[3] = mdp0->set_uuid3; - } else { - uuid.ints[1] = 0; - uuid.ints[2] = 0; - uuid.ints[3] = 0; - } - volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD); - snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u", - be32_to_cpu(mdp0->major_version), - be32_to_cpu(mdp0->minor_version), - be32_to_cpu(mdp0->patch_version)); - } else - return -1; - - volume_id_set_usage(id, VOLUME_ID_RAID); - id->type = "linux_raid_member"; - return 0; -} - -static int volume_id_probe_linux_raid1(struct volume_id *id, uint64_t off, uint64_t size) -{ - const uint8_t *buf; - struct mdp1_super_block *mdp1; - - info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size); - - buf = volume_id_get_buffer(id, off, 0x800); - if (buf == NULL) - return -1; - mdp1 = (struct mdp1_super_block *) buf; - - if (le32_to_cpu(mdp1->magic) != MD_SB_MAGIC) - return -1; - - if (le32_to_cpu(mdp1->major_version) != 1) - return -1; - - volume_id_set_uuid(id, mdp1->set_uuid, 0, UUID_MD); - volume_id_set_label_raw(id, mdp1->set_name, 32); - volume_id_set_label_string(id, mdp1->set_name, 32); - volume_id_set_usage(id, VOLUME_ID_RAID); - id->type = "linux_raid_member"; - return 0; -} - -int volume_id_probe_linux_raid(struct volume_id *id, uint64_t off, uint64_t size) -{ - uint64_t sboff; - - if (size > MD_RESERVED_BYTES) { - /* version 0 at the end of the device */ - sboff = (size & ~(MD_RESERVED_BYTES - 1)) - MD_RESERVED_BYTES; - if (volume_id_probe_linux_raid0(id, off + sboff, size) == 0) - return 0; - - /* version 1.0 at the end of the device */ - sboff = (size & ~(0x1000 - 1)) - 0x2000; - if (volume_id_probe_linux_raid1(id, off + sboff, size) == 0) { - strcpy(id->type_version, "1.0"); - return 0; - } - } - - /* version 1.1 at the start of the device */ - if (volume_id_probe_linux_raid1(id, off, size) == 0) { - strcpy(id->type_version, "1.1"); - return 0; - } - - /* version 1.2 at 4k offset from the start */ - if (volume_id_probe_linux_raid1(id, off + 0x1000, size) == 0) { - strcpy(id->type_version, "1.2"); - return 0; - } - - return -1; -} |