| /* |
| * 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 <errno.h> |
| #include <ctype.h> |
| #include <stdint.h> |
| |
| #include "superblocks.h" |
| |
| struct promise_metadata { |
| uint8_t sig[24]; |
| }; |
| |
| #define PDC_CONFIG_OFF 0x1200 |
| #define PDC_SIGNATURE "Promise Technology, Inc." |
| |
| static int probe_pdcraid(blkid_probe pr, |
| const struct blkid_idmag *mag __attribute__((__unused__))) |
| { |
| unsigned int i; |
| static unsigned int sectors[] = { |
| 63, 255, 256, 16, 399, 0 |
| }; |
| |
| if (pr->size < 0x40000) |
| return -1; |
| if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) |
| return -1; |
| |
| for (i = 0; sectors[i] != 0; i++) { |
| uint64_t off; |
| struct promise_metadata *pdc; |
| |
| off = ((pr->size / 0x200) - sectors[i]) * 0x200; |
| pdc = (struct promise_metadata *) |
| blkid_probe_get_buffer(pr, |
| off, |
| sizeof(struct promise_metadata)); |
| if (!pdc) |
| return -1; |
| |
| if (memcmp(pdc->sig, PDC_SIGNATURE, |
| sizeof(PDC_SIGNATURE) - 1) == 0) { |
| |
| if (blkid_probe_set_magic(pr, off, sizeof(pdc->sig), |
| (unsigned char *) pdc->sig)) |
| return -1; |
| return 0; |
| } |
| } |
| return -1; |
| } |
| |
| const struct blkid_idinfo pdcraid_idinfo = { |
| .name = "promise_fasttrack_raid_member", |
| .usage = BLKID_USAGE_RAID, |
| .probefunc = probe_pdcraid, |
| .magics = BLKID_NONE_MAGIC |
| }; |
| |
| |