diff options
| -rw-r--r-- | usr.sbin/makefs/cd9660/cd9660_eltorito.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/usr.sbin/makefs/cd9660/cd9660_eltorito.c b/usr.sbin/makefs/cd9660/cd9660_eltorito.c index 055451d..f0c8b2d 100644 --- a/usr.sbin/makefs/cd9660/cd9660_eltorito.c +++ b/usr.sbin/makefs/cd9660/cd9660_eltorito.c @@ -31,6 +31,9 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. */ + +#include <netinet/in.h> + #include "cd9660.h" #include "cd9660_eltorito.h" @@ -497,11 +500,43 @@ cd9660_setup_boot_volume_descriptor(volume_descriptor *bvd) return 1; } +static int +cd9660_write_apm_partition_entry(FILE *fd, int index, int total_partitions, + off_t sector_start, off_t nsectors, off_t sector_size, + const char *part_name, const char *part_type) { + uint32_t apm32; + uint16_t apm16; + + fseeko(fd, (off_t)(index + 1) * sector_size, SEEK_SET); + + /* Signature */ + apm16 = htons(0x504d); + fwrite(&apm16, sizeof(apm16), 1, fd); + apm16 = 0; + fwrite(&apm16, sizeof(apm16), 1, fd); + + /* Total number of partitions */ + apm32 = htonl(total_partitions); + fwrite(&apm32, sizeof(apm32), 1, fd); + /* Bounds */ + apm32 = htonl(sector_start); + fwrite(&apm32, sizeof(apm32), 1, fd); + apm32 = htonl(nsectors); + fwrite(&apm32, sizeof(apm32), 1, fd); + + fwrite(part_name, strlen(part_name) + 1, 1, fd); + fseek(fd, 32 - strlen(part_name) - 1, SEEK_CUR); + fwrite(part_type, strlen(part_type) + 1, 1, fd); + + return 0; +} + int cd9660_write_boot(FILE *fd) { struct boot_catalog_entry *e; struct cd9660_boot_image *t; + int apm_partitions = 0; /* write boot catalog */ if (fseeko(fd, (off_t)diskStructure.boot_catalog_sector * @@ -533,7 +568,51 @@ cd9660_write_boot(FILE *fd) t->filename, t->sector); } cd9660_copy_file(fd, t->sector, t->filename); + + if (t->system == ET_SYS_MAC) + apm_partitions++; + } + + if (apm_partitions > 0) { + /* Write DDR and global APM info */ + uint32_t apm32; + uint16_t apm16; + int total_parts; + + fseek(fd, 0, SEEK_SET); + apm16 = htons(0x4552); + fwrite(&apm16, sizeof(apm16), 1, fd); + apm16 = htons(diskStructure.sectorSize); + fwrite(&apm16, sizeof(apm16), 1, fd); + apm32 = htonl(diskStructure.totalSectors); + fwrite(&apm32, sizeof(apm32), 1, fd); + + /* Count total needed entries */ + total_parts = 2 + apm_partitions; /* Self + ISO9660 */ + + /* Write self-descriptor */ + cd9660_write_apm_partition_entry(fd, 0, + total_parts, 1, total_parts, diskStructure.sectorSize, + "Apple", "Apple_partition_map"); + + /* Write ISO9660 descriptor, enclosing the whole disk */ + cd9660_write_apm_partition_entry(fd, 1, + total_parts, 0, diskStructure.totalSectors, + diskStructure.sectorSize, "", "CD_ROM_Mode_1"); + + /* Write all partition entries */ + apm_partitions = 0; + TAILQ_FOREACH(t, &diskStructure.boot_images, image_list) { + if (t->system != ET_SYS_MAC) + continue; + + cd9660_write_apm_partition_entry(fd, + 2 + apm_partitions++, total_parts, + t->sector, t->num_sectors, diskStructure.sectorSize, + "CD Boot", "Apple_Bootstrap"); + } } return 0; } + |
