block/partitions/mac.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  fs/partitions/mac.h
   4  */
   5
   6 #define MAC_PARTITION_MAGIC     0x504d
   7
   8 /* type field value for A/UX or other Unix partitions */
   9 #define APPLE_AUX_TYPE  "Apple_UNIX_SVR2"
  10
  11 struct mac_partition {
  12         __be16  signature;      /* expected to be MAC_PARTITION_MAGIC */
  13         __be16  res1;
  14         __be32  map_count;      /* # blocks in partition map */
  15         __be32  start_block;    /* absolute starting block # of partition */
  16         __be32  block_count;    /* number of blocks in partition */
  17         char    name[32];       /* partition name */
  18         char    type[32];       /* string type description */
  19         __be32  data_start;     /* rel block # of first data block */
  20         __be32  data_count;     /* number of data blocks */
  21         __be32  status;         /* partition status bits */
  22         __be32  boot_start;
  23         __be32  boot_size;
  24         __be32  boot_load;
  25         __be32  boot_load2;
  26         __be32  boot_entry;
  27         __be32  boot_entry2;
  28         __be32  boot_cksum;
  29         char    processor[16];  /* identifies ISA of boot */
  30         /* there is more stuff after this that we don't need */
  31 };
  32
  33 #define MAC_STATUS_BOOTABLE     8       /* partition is bootable */
  34
  35 #define MAC_DRIVER_MAGIC        0x4552
  36
  37 /* Driver descriptor structure, in block 0 */
  38 struct mac_driver_desc {
  39         __be16  signature;      /* expected to be MAC_DRIVER_MAGIC */
  40         __be16  block_size;
  41         __be32  block_count;
  42     /* ... more stuff */
  43 };
  44
  45 int mac_partition(struct parsed_partitions *state);