diff options
Diffstat (limited to 'libblkid/src/superblocks/jmicron_raid.c')
| -rw-r--r-- | libblkid/src/superblocks/jmicron_raid.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/jmicron_raid.c b/libblkid/src/superblocks/jmicron_raid.c new file mode 100644 index 0000000..ca79867 --- /dev/null +++ b/libblkid/src/superblocks/jmicron_raid.c @@ -0,0 +1,65 @@ +/* + * 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 jm_metadata { + int8_t signature[2]; + uint8_t minor_version; + uint8_t major_version; + uint16_t checksum; +}; + +#define JM_SIGNATURE "JM" + +static int probe_jmraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct jm_metadata *jm; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 1) * 0x200; + jm = (struct jm_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct jm_metadata)); + if (!jm) + return errno ? -errno : 1; + + if (memcmp(jm->signature, JM_SIGNATURE, sizeof(JM_SIGNATURE) - 1) != 0) + return 1; + if (blkid_probe_sprintf_version(pr, "%u.%u", + jm->major_version, jm->minor_version) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(jm->signature), + (unsigned char *) jm->signature)) + return 1; + return 0; +} + +const struct blkid_idinfo jmraid_idinfo = { + .name = "jmicron_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_jmraid, + .magics = BLKID_NONE_MAGIC +}; + + |