mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
15d0a860e9
Config instructions for util-linux/volume_id are moved into the source files according to the new config feature. No code change. Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_MAC) += mac.o
|
|
|
|
//config:
|
|
//config:### config FEATURE_VOLUMEID_MAC
|
|
//config:### bool "mac filesystem"
|
|
//config:### default y
|
|
//config:### depends on VOLUMEID
|
|
//config:### help
|
|
//config:### TODO
|
|
//config:
|
|
|
|
#include "volume_id_internal.h"
|
|
|
|
struct mac_driver_desc {
|
|
uint8_t signature[2];
|
|
uint16_t block_size;
|
|
uint32_t block_count;
|
|
} PACKED;
|
|
|
|
struct mac_partition {
|
|
uint8_t signature[2];
|
|
uint16_t res1;
|
|
uint32_t map_count;
|
|
uint32_t start_block;
|
|
uint32_t block_count;
|
|
uint8_t name[32];
|
|
uint8_t type[32];
|
|
} PACKED;
|
|
|
|
int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id, uint64_t off)
|
|
{
|
|
const uint8_t *buf;
|
|
struct mac_driver_desc *driver;
|
|
struct mac_partition *part;
|
|
|
|
dbg("probing at offset 0x%llx", (unsigned long long) off);
|
|
|
|
buf = volume_id_get_buffer(id, off, 0x200);
|
|
if (buf == NULL)
|
|
return -1;
|
|
|
|
part = (struct mac_partition *) buf;
|
|
if (part->signature[0] == 'P' && part->signature[1] == 'M' /* "PM" */
|
|
&& (memcmp(part->type, "Apple_partition_map", 19) == 0)
|
|
) {
|
|
/* linux creates an own subdevice for the map
|
|
* just return the type if the drive header is missing */
|
|
// volume_id_set_usage(id, VOLUME_ID_PARTITIONTABLE);
|
|
// id->type = "mac_partition_map";
|
|
return 0;
|
|
}
|
|
|
|
driver = (struct mac_driver_desc *) buf;
|
|
if (driver->signature[0] == 'E' && driver->signature[1] == 'R') { /* "ER" */
|
|
/* we are on a main device, like a CD
|
|
* just try to probe the first partition from the map */
|
|
unsigned bsize = be16_to_cpu(driver->block_size);
|
|
int part_count;
|
|
int i;
|
|
|
|
/* get first entry of partition table */
|
|
buf = volume_id_get_buffer(id, off + bsize, 0x200);
|
|
if (buf == NULL)
|
|
return -1;
|
|
|
|
part = (struct mac_partition *) buf;
|
|
if (part->signature[0] != 'P' || part->signature[1] != 'M') /* not "PM" */
|
|
return -1;
|
|
|
|
part_count = be32_to_cpu(part->map_count);
|
|
dbg("expecting %d partition entries", part_count);
|
|
|
|
if (id->partitions != NULL)
|
|
free(id->partitions);
|
|
id->partitions = xzalloc(part_count * sizeof(struct volume_id_partition));
|
|
|
|
id->partition_count = part_count;
|
|
|
|
for (i = 0; i < part_count; i++) {
|
|
uint64_t poff;
|
|
uint64_t plen;
|
|
|
|
buf = volume_id_get_buffer(id, off + ((i+1) * bsize), 0x200);
|
|
if (buf == NULL)
|
|
return -1;
|
|
|
|
part = (struct mac_partition *) buf;
|
|
if (part->signature[0] != 'P' || part->signature[1] != 'M') /* not "PM" */
|
|
return -1;
|
|
|
|
poff = be32_to_cpu(part->start_block) * bsize;
|
|
plen = be32_to_cpu(part->block_count) * bsize;
|
|
dbg("found '%s' partition entry at 0x%llx, len 0x%llx",
|
|
part->type, (unsigned long long) poff,
|
|
(unsigned long long) plen);
|
|
|
|
// id->partitions[i].pt_off = poff;
|
|
// id->partitions[i].pt_len = plen;
|
|
|
|
// if (memcmp(part->type, "Apple_Free", 10) == 0) {
|
|
// volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_UNUSED);
|
|
// } else if (memcmp(part->type, "Apple_partition_map", 19) == 0) {
|
|
// volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_PARTITIONTABLE);
|
|
// } else {
|
|
// volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_UNPROBED);
|
|
// }
|
|
}
|
|
// volume_id_set_usage(id, VOLUME_ID_PARTITIONTABLE);
|
|
// id->type = "mac_partition_map";
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|