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authorDenis Vlasenko2008-03-17 09:25:05 +0000
committerDenis Vlasenko2008-03-17 09:25:05 +0000
commitd25c33f186c7cf3618c34ce79af94fe156f9ab02 (patch)
treea857a6c68d383075e36bde3b3f38b33ce41ab71c /util-linux/volume_id/unused_lvm.c
parentc5b737231debe51edb769a0b5667ee9719e560e0 (diff)
downloadbusybox-d25c33f186c7cf3618c34ce79af94fe156f9ab02.zip
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/unused_lvm.c')
-rw-r--r--util-linux/volume_id/unused_lvm.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/util-linux/volume_id/unused_lvm.c b/util-linux/volume_id/unused_lvm.c
new file mode 100644
index 0000000..caee04b
--- /dev/null
+++ b/util-linux/volume_id/unused_lvm.c
@@ -0,0 +1,87 @@
+/*
+ * 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 lvm1_super_block {
+ uint8_t id[2];
+} __attribute__((packed));
+
+struct lvm2_super_block {
+ uint8_t id[8];
+ uint64_t sector_xl;
+ uint32_t crc_xl;
+ uint32_t offset_xl;
+ uint8_t type[8];
+} __attribute__((packed));
+
+#define LVM1_SB_OFF 0x400
+
+int volume_id_probe_lvm1(struct volume_id *id, uint64_t off)
+{
+ struct lvm1_super_block *lvm;
+
+ dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+ lvm = volume_id_get_buffer(id, off + LVM1_SB_OFF, 0x800);
+ if (lvm == NULL)
+ return -1;
+
+ if (lvm->id[0] != 'H' || lvm->id[1] != 'M')
+ return -1;
+
+// volume_id_set_usage(id, VOLUME_ID_RAID);
+// id->type = "LVM1_member";
+
+ return 0;
+}
+
+#define LVM2_LABEL_ID "LABELONE"
+#define LVM2LABEL_SCAN_SECTORS 4
+
+int volume_id_probe_lvm2(struct volume_id *id, uint64_t off)
+{
+ const uint8_t *buf;
+ unsigned soff;
+ struct lvm2_super_block *lvm;
+
+ dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+ buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200);
+ if (buf == NULL)
+ return -1;
+
+
+ for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) {
+ lvm = (struct lvm2_super_block *) &buf[soff];
+
+ if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0)
+ goto found;
+ }
+
+ return -1;
+
+ found:
+// memcpy(id->type_version, lvm->type, 8);
+// volume_id_set_usage(id, VOLUME_ID_RAID);
+// id->type = "LVM2_member";
+
+ return 0;
+}