diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-03-17 09:25:05 +0000 |
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committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-03-17 09:25:05 +0000 |
commit | d25c33f186c7cf3618c34ce79af94fe156f9ab02 (patch) | |
tree | a857a6c68d383075e36bde3b3f38b33ce41ab71c /util-linux/volume_id/msdos.c | |
parent | c5b737231debe51edb769a0b5667ee9719e560e0 (diff) | |
download | busybox-d25c33f186c7cf3618c34ce79af94fe156f9ab02.tar.gz |
volume_id: disable detection routines which are not setting label and uuid anyway
function old new delta
static.warn 1 - -1
static.drive_name_string 14 12 -2
static.offsets 8 - -8
static.sectors 10 - -10
fs2 60 48 -12
raid2 16 - -16
uuidcache_init 704 677 -27
raid1 32 - -32
volume_id_probe_all 198 158 -40
volume_id_probe_lvm1 58 - -58
volume_id_probe_highpoint_37x_raid 63 - -63
volume_id_probe_hpfs 67 - -67
volume_id_probe_minix 74 - -74
volume_id_probe_lvm2 78 - -78
volume_id_probe_silicon_medley_raid 97 - -97
volume_id_probe_via_raid 101 - -101
volume_id_probe_highpoint_45x_raid 104 - -104
volume_id_probe_nvidia_raid 108 - -108
volume_id_probe_lsi_mega_raid 108 - -108
volume_id_probe_intel_software_raid 108 - -108
volume_id_probe_ufs 126 - -126
volume_id_probe_promise_fasttrack_raid 144 - -144
------------------------------------------------------------------------------
(add/remove: 0/18 grow/shrink: 0/4 up/down: 0/-1384) Total: -1384 bytes
text data bss dec hex filename
794244 662 7420 802326 c3e16 busybox_old
792698 662 7420 800780 c380c busybox_unstripped
Diffstat (limited to 'util-linux/volume_id/msdos.c')
-rw-r--r-- | util-linux/volume_id/msdos.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/util-linux/volume_id/msdos.c b/util-linux/volume_id/msdos.c deleted file mode 100644 index b4b6711dc..000000000 --- a/util-linux/volume_id/msdos.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * volume_id - reads filesystem label and uuid - * - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "volume_id_internal.h" - -struct msdos_partition_entry { - uint8_t boot_ind; - uint8_t head; - uint8_t sector; - uint8_t cyl; - uint8_t sys_ind; - uint8_t end_head; - uint8_t end_sector; - uint8_t end_cyl; - uint32_t start_sect; - uint32_t nr_sects; -} __attribute__((packed)); - -#define MSDOS_MAGIC "\x55\xaa" -#define MSDOS_PARTTABLE_OFFSET 0x1be -#define MSDOS_SIG_OFF 0x1fe -#define BSIZE 0x200 -#define DOS_EXTENDED_PARTITION 0x05 -#define LINUX_EXTENDED_PARTITION 0x85 -#define WIN98_EXTENDED_PARTITION 0x0f -#define LINUX_RAID_PARTITION 0xfd -#define is_extended(type) \ - (type == DOS_EXTENDED_PARTITION || \ - type == WIN98_EXTENDED_PARTITION || \ - type == LINUX_EXTENDED_PARTITION) -#define is_raid(type) \ - (type == LINUX_RAID_PARTITION) - -int volume_id_probe_msdos_part_table(struct volume_id *id, uint64_t off) -{ - const uint8_t *buf; - int i; - uint64_t poff; - uint64_t plen; - uint64_t extended = 0; - uint64_t current; - uint64_t next; - int limit; - int empty = 1; - struct msdos_partition_entry *part; - struct volume_id_partition *p; - - dbg("probing at offset 0x%llx", (unsigned long long) off); - - buf = volume_id_get_buffer(id, off, 0x200); - if (buf == NULL) - return -1; - - if (memcmp(&buf[MSDOS_SIG_OFF], MSDOS_MAGIC, 2) != 0) - return -1; - - /* check flags on all entries for a valid partition table */ - part = (struct msdos_partition_entry*) &buf[MSDOS_PARTTABLE_OFFSET]; - for (i = 0; i < 4; i++) { - if (part[i].boot_ind != 0 && - part[i].boot_ind != 0x80) - return -1; - - if (part[i].nr_sects != 0) - empty = 0; - } - if (empty == 1) - return -1; - - if (id->partitions != NULL) - free(id->partitions); - id->partitions = malloc(VOLUME_ID_PARTITIONS_MAX * - sizeof(struct volume_id_partition)); - if (id->partitions == NULL) - return -1; - memset(id->partitions, 0x00, - VOLUME_ID_PARTITIONS_MAX * sizeof(struct volume_id_partition)); - - for (i = 0; i < 4; i++) { - poff = (uint64_t) le32_to_cpu(part[i].start_sect) * BSIZE; - plen = (uint64_t) le32_to_cpu(part[i].nr_sects) * BSIZE; - - if (plen == 0) - continue; - - p = &id->partitions[i]; - - p->partition_type_raw = part[i].sys_ind; - - if (is_extended(part[i].sys_ind)) { - dbg("found extended partition at 0x%llx", (unsigned long long) poff); - volume_id_set_usage_part(p, VOLUME_ID_PARTITIONTABLE); - p->type = "msdos_extended_partition"; - if (extended == 0) - extended = off + poff; - } else { - dbg("found 0x%x data partition at 0x%llx, len 0x%llx", - part[i].sys_ind, (unsigned long long) poff, (unsigned long long) plen); - - if (is_raid(part[i].sys_ind)) - volume_id_set_usage_part(p, VOLUME_ID_RAID); - else - volume_id_set_usage_part(p, VOLUME_ID_UNPROBED); - } - - p->off = off + poff; - p->len = plen; - id->partition_count = i+1; - } - - next = extended; - current = extended; - limit = 50; - - /* follow extended partition chain and add data partitions */ - while (next != 0) { - if (limit-- == 0) { - dbg("extended chain limit reached"); - break; - } - - buf = volume_id_get_buffer(id, current, 0x200); - if (buf == NULL) - break; - - part = (struct msdos_partition_entry*) &buf[MSDOS_PARTTABLE_OFFSET]; - - if (memcmp(&buf[MSDOS_SIG_OFF], MSDOS_MAGIC, 2) != 0) - break; - - next = 0; - - for (i = 0; i < 4; i++) { - poff = (uint64_t) le32_to_cpu(part[i].start_sect) * BSIZE; - plen = (uint64_t) le32_to_cpu(part[i].nr_sects) * BSIZE; - - if (plen == 0) - continue; - - if (is_extended(part[i].sys_ind)) { - dbg("found extended partition at 0x%llx", (unsigned long long) poff); - if (next == 0) - next = extended + poff; - } else { - dbg("found 0x%x data partition at 0x%llx, len 0x%llx", - part[i].sys_ind, (unsigned long long) poff, (unsigned long long) plen); - - /* we always start at the 5th entry */ - while (id->partition_count < 4) - volume_id_set_usage_part(&id->partitions[id->partition_count++], VOLUME_ID_UNUSED); - - p = &id->partitions[id->partition_count]; - - if (is_raid(part[i].sys_ind)) - volume_id_set_usage_part(p, VOLUME_ID_RAID); - else - volume_id_set_usage_part(p, VOLUME_ID_UNPROBED); - - p->off = current + poff; - p->len = plen; - id->partition_count++; - - p->partition_type_raw = part[i].sys_ind; - - if (id->partition_count >= VOLUME_ID_PARTITIONS_MAX) { - dbg("too many partitions"); - next = 0; - } - } - } - - current = next; - } - - volume_id_set_usage(id, VOLUME_ID_PARTITIONTABLE); - id->type = "msdos_partition_table"; - - return 0; -} |