diff options
Diffstat (limited to 'libs/blkid/src/probers/linux_raid.c')
| -rw-r--r-- | libs/blkid/src/probers/linux_raid.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/libs/blkid/src/probers/linux_raid.c b/libs/blkid/src/probers/linux_raid.c deleted file mode 100644 index a5926561d..000000000 --- a/libs/blkid/src/probers/linux_raid.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright (C) 2008 Karel Zak <kzak@redhat.com> - * - * Inspired by libvolume_id by - * Kay Sievers <kay.sievers@vrfy.org> - * - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - */ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <stdint.h> - -#include "blkidP.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; -}; - -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]; -}; - -#define MD_RESERVED_BYTES 0x10000 -#define MD_SB_MAGIC 0xa92b4efc - -static int probe_raid0(blkid_probe pr, off_t off) -{ - struct mdp0_super_block *mdp0; - union { - uint32_t ints[4]; - uint8_t bytes[16]; - } uuid; - - if (pr->size < 0x10000) - return -1; - mdp0 = (struct mdp0_super_block *) - blkid_probe_get_buffer(pr, - off, - sizeof(struct mdp0_super_block)); - if (!mdp0) - return -1; - - memset(uuid.ints, 0, sizeof(uuid.ints)); - - if (le32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) { - uuid.ints[0] = swab32(mdp0->set_uuid0); - if (le32_to_cpu(mdp0->minor_version >= 90)) { - uuid.ints[1] = swab32(mdp0->set_uuid1); - uuid.ints[2] = swab32(mdp0->set_uuid2); - uuid.ints[3] = swab32(mdp0->set_uuid3); - } - if (blkid_probe_sprintf_version(pr, "%u.%u.%u", - le32_to_cpu(mdp0->major_version), - le32_to_cpu(mdp0->minor_version), - le32_to_cpu(mdp0->patch_version)) != 0) - return -1; - - } 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; - } - if (blkid_probe_sprintf_version(pr, "%u.%u.%u", - be32_to_cpu(mdp0->major_version), - be32_to_cpu(mdp0->minor_version), - be32_to_cpu(mdp0->patch_version)) != 0) - return -1; - } else - return -1; - - if (blkid_probe_set_uuid(pr, (unsigned char *) uuid.bytes) != 0) - return -1; - - return 0; -} - -static int probe_raid1(blkid_probe pr, off_t off) -{ - struct mdp1_super_block *mdp1; - - mdp1 = (struct mdp1_super_block *) - blkid_probe_get_buffer(pr, - off, - sizeof(struct mdp1_super_block)); - if (!mdp1) - return -1; - if (le32_to_cpu(mdp1->magic) != MD_SB_MAGIC) - return -1; - if (le32_to_cpu(mdp1->major_version) != 1) - return -1; - if (blkid_probe_set_uuid(pr, (unsigned char *) mdp1->set_uuid) != 0) - return -1; - if (blkid_probe_set_label(pr, mdp1->set_name, - sizeof(mdp1->set_name)) != 0) - return -1; - - return 0; -} - -int probe_raid(blkid_probe pr, const struct blkid_idmag *mag) -{ - const char *ver = NULL; - - if (pr->size > MD_RESERVED_BYTES) { - /* version 0 at the end of the device */ - uint64_t sboff = (pr->size & ~(MD_RESERVED_BYTES - 1)) - - MD_RESERVED_BYTES; - if (probe_raid0(pr, sboff) == 0) - return 0; - - /* version 1.0 at the end of the device */ - sboff = (pr->size & ~(0x1000 - 1)) - 0x2000; - if (probe_raid1(pr, sboff) == 0) - ver = "1.0"; - } - - if (!ver) { - /* version 1.1 at the start of the device */ - if (probe_raid1(pr, 0) == 0) - ver = "1.1"; - - /* version 1.2 at 4k offset from the start */ - else if (probe_raid1(pr, 0x1000) == 0) - ver = "1.2"; - } - - if (ver) { - blkid_probe_set_version(pr, ver); - return 0; - } - return -1; -} - - -const struct blkid_idinfo linuxraid_idinfo = { - .name = "linux_raid_member", - .usage = BLKID_USAGE_RAID, - .probefunc = probe_raid, - .magics = BLKID_NONE_MAGIC -}; - - |