From de7684a309ad20c1b889d048d741cb1dd52245f7 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Mon, 18 Feb 2008 21:08:49 +0000 Subject: support for mount by label (not yet tested) Also adds findfs applet. Closes bug 1143. --- util-linux/volume_id/promise_raid.c | 63 +++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 util-linux/volume_id/promise_raid.c (limited to 'util-linux/volume_id/promise_raid.c') diff --git a/util-linux/volume_id/promise_raid.c b/util-linux/volume_id/promise_raid.c new file mode 100644 index 000000000..9195c637b --- /dev/null +++ b/util-linux/volume_id/promise_raid.c @@ -0,0 +1,63 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2005 Kay Sievers + * + * 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 promise_meta { + uint8_t sig[24]; +} __attribute__((packed)); + +#define PDC_CONFIG_OFF 0x1200 +#define PDC_SIGNATURE "Promise Technology, Inc." + +int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size) +{ + static const unsigned short sectors[] = { + 63, 255, 256, 16, 399 + }; + + struct promise_meta *pdc; + unsigned i; + + dbg("probing at offset 0x%llx, size 0x%llx", + (unsigned long long) off, (unsigned long long) size); + + if (size < 0x40000) + return -1; + + for (i = 0; i < ARRAY_SIZE(sectors); i++) { + uint64_t meta_off; + + meta_off = ((size / 0x200) - sectors[i]) * 0x200; + pdc = volume_id_get_buffer(id, off + meta_off, 0x200); + if (pdc == NULL) + return -1; + + if (memcmp(pdc->sig, PDC_SIGNATURE, sizeof(PDC_SIGNATURE)-1) == 0) + goto found; + } + return -1; + + found: + volume_id_set_usage(id, VOLUME_ID_RAID); + id->type = "promise_fasttrack_raid_member"; + + return 0; +} -- cgit v1.2.3