diff options
Diffstat (limited to 'libblkid/mac.c')
| -rw-r--r-- | libblkid/mac.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/libblkid/mac.c b/libblkid/mac.c deleted file mode 100644 index e18896cba..000000000 --- a/libblkid/mac.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * mac partitions parsing code - * - * Copyright (C) 2009 Karel Zak <kzak@redhat.com> - * - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - * - */ -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stdint.h> - -#include "partitions.h" - -#define MAC_PARTITION_MAGIC 0x504d -#define MAC_PARTITION_MAGIC_OLD 0x5453 - -/* - * Mac partition entry - * http://developer.apple.com/legacy/mac/library/documentation/mac/Devices/Devices-126.html - */ -struct mac_partition { - uint16_t signature; /* expected to be MAC_PARTITION_MAGIC */ - uint16_t reserved; /* reserved */ - uint32_t map_count; /* # blocks in partition map */ - uint32_t start_block; /* absolute starting block # of partition */ - uint32_t block_count; /* number of blocks in partition */ - char name[32]; /* partition name */ - char type[32]; /* string type description */ - uint32_t data_start; /* rel block # of first data block */ - uint32_t data_count; /* number of data blocks */ - uint32_t status; /* partition status bits */ - uint32_t boot_start; /* first logical block of boot code */ - uint32_t boot_size; /* size of boot code, in bytes */ - uint32_t boot_load; /* boot code load address */ - uint32_t boot_load2; /* reserved */ - uint32_t boot_entry; /* boot code entry point */ - uint32_t boot_entry2; /* reserved */ - uint32_t boot_cksum; /* boot code checksum */ - char processor[16]; /* identifies ISA of boot */ - - /* there is more stuff after this that we don't need */ -} __attribute__((packed)); - -/* - * Driver descriptor structure, in block 0 - * http://developer.apple.com/legacy/mac/library/documentation/mac/Devices/Devices-121.html - */ -struct mac_driver_desc { - uint16_t signature; /* expected to be MAC_DRIVER_MAGIC */ - uint16_t block_size; /* block size of the device */ - uint32_t block_count; /* number of blocks on the device */ - - /* there is more stuff after this that we don't need */ -} __attribute__((packed)); - -static inline unsigned char *get_mac_block( - blkid_probe pr, - uint16_t block_size, - uint32_t num) -{ - return blkid_probe_get_buffer(pr, - (blkid_loff_t) num * block_size, block_size); -} - -static inline int has_part_signature(struct mac_partition *p) -{ - return be16_to_cpu(p->signature) == MAC_PARTITION_MAGIC || - be16_to_cpu(p->signature) == MAC_PARTITION_MAGIC_OLD; -} - -static int probe_mac_pt(blkid_probe pr, - const struct blkid_idmag *mag __attribute__((__unused__))) -{ - struct mac_driver_desc *md; - struct mac_partition *p; - blkid_parttable tab = NULL; - blkid_partlist ls; - uint16_t block_size; - uint16_t ssf; /* sector size fragment */ - uint32_t nblks, i; - - - /* The driver descriptor record is always located at physical block 0, - * the first block on the disk. - */ - md = (struct mac_driver_desc *) blkid_probe_get_sector(pr, 0); - if (!md) - goto nothing; - - block_size = be16_to_cpu(md->block_size); - - /* The partition map always begins at physical block 1, - * the second block on the disk. - */ - p = (struct mac_partition *) get_mac_block(pr, block_size, 1); - if (!p) - goto nothing; - - /* check the first partition signature */ - if (!has_part_signature(p)) - goto nothing; - - if (blkid_partitions_need_typeonly(pr)) - /* caller does not ask for details about partitions */ - return 0; - - ls = blkid_probe_get_partlist(pr); - if (!ls) - goto err; - - tab = blkid_partlist_new_parttable(ls, "mac", 0); - if (!tab) - goto err; - - ssf = block_size / 512; - nblks = be32_to_cpu(p->map_count); - - for (i = 1; i <= nblks; ++i) { - blkid_partition par; - uint32_t start; - uint32_t size; - - p = (struct mac_partition *) get_mac_block(pr, block_size, i); - if (!p) - goto nothing; - if (!has_part_signature(p)) - goto nothing; - - if (be32_to_cpu(p->map_count) != nblks) { - DBG(DEBUG_LOWPROBE, printf( - "mac: inconsisten map_count in partition map, " - "entry[0]: %d, entry[%d]: %d\n", - nblks, i - 1, - be32_to_cpu(p->map_count))); - } - - /* - * note that libparted ignores some mac partitions according to - * the partition name (e.g. "Apple_Free" or "Apple_Void"). We - * follows Linux kernel and all partitions are visible - */ - - start = be32_to_cpu(p->start_block) * ssf; - size = be32_to_cpu(p->block_count) * ssf; - - par = blkid_partlist_add_partition(ls, tab, start, size); - if (!par) - goto err; - - blkid_partition_set_name(par, (unsigned char *) p->name, - sizeof(p->name)); - - blkid_partition_set_type_string(par, (unsigned char *) p->type, - sizeof(p->type)); - } - - return 0; - -nothing: - return 1; -err: - return -1; -} - -/* - * Mac disk always begin with "Driver Descriptor Record" - * (struct mac_driver_desc) and magic 0x4552. - */ -const struct blkid_idinfo mac_pt_idinfo = -{ - .name = "mac", - .probefunc = probe_mac_pt, - .magics = - { - /* big-endian magic string */ - { .magic = "\x45\x52", .len = 2 }, - { NULL } - } -}; - |