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Viewing changes to 1.0.0.rc15/lib/format/ddf/ddf1_lib.c

  • Committer: Bazaar Package Importer
  • Author(s): Giuseppe Iuculano, 6af052c
  • Date: 2009-03-25 22:34:59 UTC
  • mfrom: (2.1.9 sid)
  • mto: (2.4.1 squeeze)
  • mto: This revision was merged to the branch mainline in revision 39.
  • Revision ID: james.westby@ubuntu.com-20090325223459-y54f0rmxem7htn6r
Tags: 1.0.0.rc15-6
http://bugs.debian.org/521104
[6af052c] Remove 15_isw_incorrect_status_fix.patch, it causes a
segfault. (Closes: #521104)

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1.0.0.rc15/lib/format/ddf/ddf1_lib.c
 
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/*
 
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 * SNIA DDF1 v1.0 metadata format handler.
 
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 *
 
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 * Copyright (C) 2005-2006 IBM, All rights reserved.
 
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 * Written by Darrick Wong <djwong@us.ibm.com>
 
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 *
 
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 * Copyright (C) 2006 Heinz Mauelshagen, Red Hat GmbH
 
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 *                    All rights reserved.
 
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 *
 
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 * See file LICENSE at the top of this source tree for license information.
 
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 */
 
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#include "internal.h"
 
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#define FORMAT_HANDLER
 
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#include "ddf1.h"
 
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#include "ddf1_lib.h"
 
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#define DM_BYTEORDER_SWAB
 
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#include <datastruct/byteorder.h>
 
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/* Figure out what endian conversions we need */
 
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int
 
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ddf1_endianness(struct lib_context *lc, struct ddf1 *ddf1)
 
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{
 
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        uint8_t *ptr = (uint8_t *) & ddf1->anchor.signature;
 
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        if (ptr[0] == 0xDE && ptr[1] == 0x11)
 
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                return BIG_ENDIAN;
 
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        else if (ptr[0] == 0x11 && ptr[1] == 0xDE)
 
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                return LITTLE_ENDIAN;
 
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        else
 
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                LOG_ERR(lc, -EINVAL, "Can't figure out endianness!");
 
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}
 
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/* Find the beginning of all DDF metadata */
 
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uint64_t
 
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ddf1_beginning(struct ddf1 *ddf1)
 
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{
 
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        uint64_t start;
 
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        struct ddf1_header *h = &ddf1->anchor;
 
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        start = ddf1->anchor_offset;
 
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        if (h->primary_table_lba < start)
 
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                start = h->primary_table_lba;
 
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        if (h->secondary_table_lba < start)
 
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                start = h->secondary_table_lba;
 
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#ifdef WORKSPACE_IS_PART_OF_DDF
 
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        if (ddf1->primary->workspace_lba < start)
 
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                start = ddf1->primary->workspace_lba;
 
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#endif
 
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        return start;
 
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}
 
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/* Helper for CR_OFF */
 
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uint16_t
 
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ddf1_cr_off_maxpds_helper(struct ddf1 * ddf1)
 
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{
 
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        struct ddf1_header *h = ddf1->primary;
 
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        /* The 0xFFFF nonsense is a weird Adaptec quirk */
 
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//      bz211016
 
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//      return (h->max_primary_elements == 0xFFFF && ddf1->adaptec_mode) ?
 
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        return (h->max_primary_elements == 0xFFFF) ?
 
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                h->max_phys_drives : h->max_primary_elements;
 
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}
 
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/* Process DDF1 records depending on type */
 
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int
 
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ddf1_process_records(struct lib_context *lc, struct dev_info *di,
 
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                     struct ddf1_record_handler *handler,
 
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                     struct ddf1 *ddf1, int in_cpu_format)
 
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{
 
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        unsigned int i, cfgs = NUM_CONFIG_ENTRIES(ddf1);
 
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        uint32_t x;
 
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        for (i = 0; i < cfgs; i++) {
 
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                x = *((uint32_t *) CR(ddf1, i));
 
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                if (!in_cpu_format && BYTE_ORDER != ddf1->disk_format)
 
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                        CVT32(x);
 
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                switch (x) {
 
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                case DDF1_VD_CONFIG_REC:
 
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                        if (!handler->vd(lc, di, ddf1, i))
 
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                                return 0;
 
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                        break;
 
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                case DDF1_SPARE_REC:
 
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                        if (!handler->spare(lc, di, ddf1, i))
 
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                                return 0;
 
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                        break;
 
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                case 0: /* Adaptec puts zero in this field??? */
 
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                case DDF1_INVALID:
 
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                        break;
 
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                default:
 
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                        log_warn(lc, "%s: Unknown config record %d.",
 
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                                 di->path, x);
 
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                }
 
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        }
 
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        return 1;
 
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}