diff options
Diffstat (limited to 'libblkid/src/superblocks/isw_raid.c')
| -rw-r--r-- | libblkid/src/superblocks/isw_raid.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/isw_raid.c b/libblkid/src/superblocks/isw_raid.c new file mode 100644 index 0000000..81d53a1 --- /dev/null +++ b/libblkid/src/superblocks/isw_raid.c @@ -0,0 +1,67 @@ +/* + * 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 "superblocks.h" + +struct isw_metadata { + uint8_t sig[32]; + uint32_t check_sum; + uint32_t mpb_size; + uint32_t family_num; + uint32_t generation_num; +}; + +#define ISW_SIGNATURE "Intel Raid ISM Cfg Sig. " + +static int probe_iswraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + unsigned int sector_size; + struct isw_metadata *isw; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + sector_size = blkid_probe_get_sectorsize(pr); + off = ((pr->size / sector_size) - 2) * sector_size; + + isw = (struct isw_metadata *)blkid_probe_get_buffer(pr, + off, sizeof(struct isw_metadata)); + if (!isw) + return errno ? -errno : 1; + + if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0) + return 1; + + if (blkid_probe_sprintf_version(pr, "%6s", + &isw->sig[sizeof(ISW_SIGNATURE)-1]) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(isw->sig), + (unsigned char *) isw->sig)) + return 1; + return 0; +} + +const struct blkid_idinfo iswraid_idinfo = { + .name = "isw_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_iswraid, + .magics = BLKID_NONE_MAGIC +}; + + |