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d25c33f186
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
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/*
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* volume_id - reads filesystem label and uuid
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*
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* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "volume_id_internal.h"
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struct lvm1_super_block {
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uint8_t id[2];
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} __attribute__((packed));
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struct lvm2_super_block {
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uint8_t id[8];
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uint64_t sector_xl;
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uint32_t crc_xl;
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uint32_t offset_xl;
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uint8_t type[8];
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} __attribute__((packed));
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#define LVM1_SB_OFF 0x400
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int volume_id_probe_lvm1(struct volume_id *id, uint64_t off)
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{
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struct lvm1_super_block *lvm;
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dbg("probing at offset 0x%llx", (unsigned long long) off);
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lvm = volume_id_get_buffer(id, off + LVM1_SB_OFF, 0x800);
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if (lvm == NULL)
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return -1;
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if (lvm->id[0] != 'H' || lvm->id[1] != 'M')
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return -1;
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// volume_id_set_usage(id, VOLUME_ID_RAID);
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// id->type = "LVM1_member";
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return 0;
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}
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#define LVM2_LABEL_ID "LABELONE"
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#define LVM2LABEL_SCAN_SECTORS 4
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int volume_id_probe_lvm2(struct volume_id *id, uint64_t off)
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{
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const uint8_t *buf;
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unsigned soff;
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struct lvm2_super_block *lvm;
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dbg("probing at offset 0x%llx", (unsigned long long) off);
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buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200);
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if (buf == NULL)
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return -1;
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for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) {
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lvm = (struct lvm2_super_block *) &buf[soff];
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if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0)
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goto found;
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}
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return -1;
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found:
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// memcpy(id->type_version, lvm->type, 8);
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// volume_id_set_usage(id, VOLUME_ID_RAID);
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// id->type = "LVM2_member";
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return 0;
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}
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