/* * volume_id - reads filesystem label and uuid * * Copyright (C) 2005 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 */ //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_PROMISERAID) += promise_raid.o //config:### config FEATURE_VOLUMEID_PROMISERAID //config:### bool "promise raid" //config:### default y //config:### depends on VOLUMEID #include "volume_id_internal.h" struct promise_meta { uint8_t sig[24]; } PACKED; #define PDC_CONFIG_OFF 0x1200 #define PDC_SIGNATURE "Promise Technology, Inc." int FAST_FUNC 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; }