| bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Karel Zak <kzak@redhat.com> |
| 3 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> |
| 4 | * |
| 5 | * Inspired by libvolume_id by |
| 6 | * Kay Sievers <kay.sievers@vrfy.org> |
| 7 | * |
| 8 | * This file may be redistributed under the terms of the |
| 9 | * GNU Lesser General Public License. |
| 10 | */ |
| 11 | #include <stdio.h> |
| 12 | #include <stdlib.h> |
| 13 | #include <unistd.h> |
| 14 | #include <string.h> |
| 15 | #include <stdint.h> |
| 16 | |
| 17 | #include "superblocks.h" |
| 18 | |
| 19 | struct nv_metadata { |
| 20 | uint8_t vendor[8]; |
| 21 | uint32_t size; |
| 22 | uint32_t chksum; |
| 23 | uint16_t version; |
| 24 | } __attribute__((packed)); |
| 25 | |
| 26 | #define NVIDIA_SIGNATURE "NVIDIA" |
| 27 | |
| 28 | static int probe_nvraid(blkid_probe pr, |
| 29 | const struct blkid_idmag *mag __attribute__((__unused__))) |
| 30 | { |
| 31 | uint64_t off; |
| 32 | struct nv_metadata *nv; |
| 33 | |
| 34 | if (pr->size < 0x10000) |
| 35 | return -1; |
| 36 | if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) |
| 37 | return -1; |
| 38 | |
| 39 | off = ((pr->size / 0x200) - 2) * 0x200; |
| 40 | nv = (struct nv_metadata *) |
| 41 | blkid_probe_get_buffer(pr, |
| 42 | off, |
| 43 | sizeof(struct nv_metadata)); |
| 44 | if (!nv) |
| 45 | return -1; |
| 46 | |
| 47 | if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0) |
| 48 | return -1; |
| 49 | if (blkid_probe_sprintf_version(pr, "%u", le16_to_cpu(nv->version)) != 0) |
| 50 | return -1; |
| 51 | if (blkid_probe_set_magic(pr, off, sizeof(nv->vendor), |
| 52 | (unsigned char *) nv->vendor)) |
| 53 | return -1; |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | const struct blkid_idinfo nvraid_idinfo = { |
| 58 | .name = "nvidia_raid_member", |
| 59 | .usage = BLKID_USAGE_RAID, |
| 60 | .probefunc = probe_nvraid, |
| 61 | .magics = BLKID_NONE_MAGIC |
| 62 | }; |
| 63 | |
| 64 | |