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/*
*
* (C) Copyright IBM Corp. 2001, 2003
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Module: libbsd.so
*
* File: commit.c
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <plugin.h>
#include "bsd_plugin.h"
static int do_bsd_commit( LOGICALDISK *ld, DISKSEG *parent, boolean backup )
{
struct bsd_partition *p;
DISKSEG *seg;
char buffer[EVMS_VSECTOR_SIZE];
bsd_disklabel_t *disk_label=(bsd_disklabel_t *)buffer;
int rc = 0;
seg_private_data_t *pdata;
list_element_t iter;
LOG_ENTRY();
// read bsd info & verify we have valid disk label
rc = READ( ld, 0, 1, buffer );
if (!rc) {
if ( DISK_TO_CPU32(disk_label->d_magic) != BSD_DISKMAGIC) {
rc = EINVAL;
}
}
if (rc) {
LOG_EXIT_INT(rc);
return rc;
}
// walk through the partition table, removing all linux partition records
for ( p = disk_label->d_partitions;
p - disk_label->d_partitions < DISK_TO_CPU16(disk_label->d_npartitions);
p++) {
// only delete the record if it has an file system type. this
// will prevent us from deleting those bsd partition records that
// are used to reserve space at the front of the disk. These
// records seem to have a size and offset but no file system type.
if (p->p_fstype != BSD_TAG_UNUSED) {
memset( (void *) p, 0, sizeof(struct bsd_partition) );
}
}
// now walk through the segment list on this drive and add each
// data segment the BSD partition table.
LIST_FOR_EACH( ld->parent_objects, iter, seg ) {
if (seg->data_type == DATA_TYPE) {
// find an unused entry in the bsd partition table
for ( p = disk_label->d_partitions, rc=ENOMEM;
p - disk_label->d_partitions < DISK_TO_CPU16(disk_label->d_npartitions);
p++) {
if ( (p->p_fstype == BSD_TAG_UNUSED) &&
(p->p_size == 0 ) &&
(p->p_offset == 0 )) {
rc = 0;
break;
}
}
// create entry in bsd partition table for this segment
if (!rc) {
pdata = (seg_private_data_t *) seg->private_data;
memcpy( (void *) p, (void *) &pdata->p_record, sizeof(bsd_partition_t) );
p->p_offset = CPU_TO_DISK32( seg->start );
p->p_size = CPU_TO_DISK32( seg->size );
}
}
}
// update BSD info
if (backup) {
rc = EngFncs->save_metadata( parent->name, ld->name, 0, 1, buffer );
} else {
rc = WRITE( ld, 0, 1, buffer );
}
LOG_EXIT_INT(rc);
return rc;
}
/*
* Function: commit_bsd_metadata
*
* Called to commit the BSD disk label information.
*/
int commit_bsd_segments( DISKSEG *seg, LOGICALDISK *ld, uint commit_phase, boolean backup )
{
int rc=0;
LOG_ENTRY();
if (seg->data_type == META_DATA_TYPE || backup) {
rc = do_bsd_commit( ld, seg, backup );
if (!rc && !backup) {
seg->flags &= ~SOFLAG_DIRTY;
}
}
else {
seg->flags &= ~SOFLAG_DIRTY;
}
LOG_EXIT_INT(rc);
return rc;
}
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