diff options
Diffstat (limited to 'util-linux/volume_id/unused_mac.c')
| -rw-r--r-- | util-linux/volume_id/unused_mac.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/util-linux/volume_id/unused_mac.c b/util-linux/volume_id/unused_mac.c new file mode 100644 index 0000000..8eaa173 --- /dev/null +++ b/util-linux/volume_id/unused_mac.c @@ -0,0 +1,123 @@ +/* + * 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 + */ + +#include "volume_id_internal.h" + +struct mac_driver_desc { + uint8_t signature[2]; + uint16_t block_size; + uint32_t block_count; +} __attribute__((__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]; +} __attribute__((__packed__)); + +int 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; +} |