diff options
Diffstat (limited to 'libs/blkid/src/probers/lvm.c')
-rw-r--r-- | libs/blkid/src/probers/lvm.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/libs/blkid/src/probers/lvm.c b/libs/blkid/src/probers/lvm.c deleted file mode 100644 index 1a4e6bffe..000000000 --- a/libs/blkid/src/probers/lvm.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * Copyright (C) 1999 by Andries Brouwer - * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o - * Copyright (C) 2001 by Andreas Dilger - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * Copyright (C) 2008 Karel Zak <kzak@redhat.com> - * - * 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" - -#define LVM2_ID_LEN 32 - -struct lvm2_pv_label_header { - /* label_header */ - uint8_t id[8]; /* LABELONE */ - uint64_t sector_xl; /* Sector number of this label */ - uint32_t crc_xl; /* From next field to end of sector */ - uint32_t offset_xl; /* Offset from start of struct to contents */ - uint8_t type[8]; /* LVM2 001 */ - /* pv_header */ - uint8_t pv_uuid[LVM2_ID_LEN]; -} __attribute__ ((packed)); - -#define LVM2_LABEL_SIZE 512 -static unsigned int lvm2_calc_crc(const void *buf, unsigned int size) -{ - static const unsigned int crctab[] = { - 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, - 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, - 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, - 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c - }; - unsigned int i, crc = 0xf597a6cf; - const uint8_t *data = (const uint8_t *) buf; - - for (i = 0; i < size; i++) { - crc ^= *data++; - crc = (crc >> 4) ^ crctab[crc & 0xf]; - crc = (crc >> 4) ^ crctab[crc & 0xf]; - } - return crc; -} - -static int probe_lvm2(blkid_probe pr, const struct blkid_idmag *mag) -{ - int sector = mag->kboff << 1; - struct lvm2_pv_label_header *label; - char *p, *q, uuid[40]; - unsigned int i, b; - unsigned char *buf; - - buf = blkid_probe_get_buffer(pr, - mag->kboff << 10, - 512 + sizeof(struct lvm2_pv_label_header)); - if (!buf) - return -1; - - /* buf is at 0k or 1k offset; find label inside */ - if (memcmp(buf, "LABELONE", 8) == 0) { - label = (struct lvm2_pv_label_header *) buf; - } else if (memcmp(buf + 512, "LABELONE", 8) == 0) { - label = (struct lvm2_pv_label_header *)(buf + 512); - sector++; - } else { - return 1; - } - - if (le64_to_cpu(label->sector_xl) != (unsigned) sector) - return 1; - - if (lvm2_calc_crc(&label->offset_xl, LVM2_LABEL_SIZE - - ((char *) &label->offset_xl - (char *) label)) != - le32_to_cpu(label->crc_xl)) { - DBG(DEBUG_PROBE, - printf("LVM2: label checksum incorrect at sector %d\n", - sector)); - return 1; - } - - for (i = 0, b = 1, p = uuid, q = (char *) label->pv_uuid; i <= 32; - i++, b <<= 1) { - if (b & 0x4444440) - *p++ = '-'; - *p++ = *q++; - } - - uuid[LVM2_ID_LEN+6] = '\0'; - blkid_probe_sprintf_uuid(pr, label->pv_uuid, sizeof(label->pv_uuid), - "%s", uuid); - - /* the mag->magic is the same string as label->type, - * but zero terminated */ - blkid_probe_set_version(pr, mag->magic); - return 0; -} - - -/* NOTE: the original libblkid uses "lvm2pv" as a name */ -const struct blkid_idinfo lvm2_idinfo = -{ - .name = "LVM2_member", - .usage = BLKID_USAGE_RAID, - .probefunc = probe_lvm2, - .magics = - { - { .magic = "LVM2 001", .len = 8, .sboff = 0x218 }, - { .magic = "LVM2 001", .len = 8, .sboff = 0x018 }, - { .magic = "LVM2 001", .len = 8, .kboff = 1, .sboff = 0x018 }, - { .magic = "LVM2 001", .len = 8, .kboff = 1, .sboff = 0x218 }, - { NULL } - } -}; - -const struct blkid_idinfo lvm1_idinfo = -{ - .name = "LVM1_member", - .usage = BLKID_USAGE_RAID, - .magics = - { - { .magic = "HM", .len = 2, .sboff = 0x400 }, - { NULL } - } -}; - - |