diff options
Diffstat (limited to 'libblkid/src/superblocks/iso9660.c')
| -rw-r--r-- | libblkid/src/superblocks/iso9660.c | 195 |
1 files changed, 123 insertions, 72 deletions
diff --git a/libblkid/src/superblocks/iso9660.c b/libblkid/src/superblocks/iso9660.c index 536704b..a7a364f 100644 --- a/libblkid/src/superblocks/iso9660.c +++ b/libblkid/src/superblocks/iso9660.c @@ -22,7 +22,7 @@ #include "cctype.h" #include "iso9660.h" -struct iso9660_date { +struct hs_date { unsigned char year[4]; unsigned char month[2]; unsigned char day[2]; @@ -30,11 +30,16 @@ struct iso9660_date { unsigned char minute[2]; unsigned char second[2]; unsigned char hundredth[2]; +} __attribute__ ((packed)); + +struct iso9660_date { + struct hs_date common; unsigned char offset; } __attribute__ ((packed)); /* PVD - Primary volume descriptor */ struct iso_volume_descriptor { + /* High Sierra has 8 bytes before descriptor with Volume Descriptor LBN value, those are skipped by blkid_probe_get_buffer() */ unsigned char vd_type; unsigned char vd_id[5]; unsigned char vd_version; @@ -43,21 +48,59 @@ struct iso_volume_descriptor { unsigned char volume_id[32]; unsigned char unused[8]; unsigned char space_size[8]; - unsigned char escape_sequences[8]; - unsigned char unused2[32]; + unsigned char escape_sequences[32]; + unsigned char set_size[4]; + unsigned char vol_seq_num[4]; unsigned char logical_block_size[4]; - unsigned char unused3[58]; - unsigned char volume_set_id[128]; - unsigned char publisher_id[128]; - unsigned char data_preparer_id[128]; - unsigned char application_id[128]; - unsigned char unused4[111]; - struct iso9660_date created; - struct iso9660_date modified; + unsigned char path_table_size[8]; + union { + struct { + unsigned char type_l_path_table[4]; + unsigned char opt_type_l_path_table[4]; + unsigned char type_m_path_table[4]; + unsigned char opt_type_m_path_table[4]; + unsigned char root_dir_record[34]; + unsigned char volume_set_id[128]; + unsigned char publisher_id[128]; + unsigned char data_preparer_id[128]; + unsigned char application_id[128]; + unsigned char copyright_file_id[37]; + unsigned char abstract_file_id[37]; + unsigned char bibliographic_file_id[37]; + struct iso9660_date created; + struct iso9660_date modified; + struct iso9660_date expiration; + struct iso9660_date effective; + unsigned char std_version; + } iso; /* ISO9660 */ + struct { + unsigned char type_l_path_table[4]; + unsigned char opt1_type_l_path_table[4]; + unsigned char opt2_type_l_path_table[4]; + unsigned char opt3_type_l_path_table[4]; + unsigned char type_m_path_table[4]; + unsigned char opt1_type_m_path_table[4]; + unsigned char opt2_type_m_path_table[4]; + unsigned char opt3_type_m_path_table[4]; + unsigned char root_dir_record[34]; + unsigned char volume_set_id[128]; + unsigned char publisher_id[128]; + unsigned char data_preparer_id[128]; + unsigned char application_id[128]; + unsigned char copyright_file_id[32]; + unsigned char abstract_file_id[32]; + struct hs_date created; + struct hs_date modified; + struct hs_date expiration; + struct hs_date effective; + unsigned char std_version; + } hs; /* High Sierra */ + }; } __attribute__((packed)); /* Boot Record */ struct boot_record { + /* High Sierra has 8 bytes before descriptor with Volume Descriptor LBN value, those are skipped by blkid_probe_get_buffer() */ unsigned char vd_type; unsigned char vd_id[5]; unsigned char vd_version; @@ -74,35 +117,9 @@ struct boot_record { #define ISO_VD_END 0xff #define ISO_VD_MAX 16 /* maximal string field size used anywhere in ISO; update if necessary */ -#define ISO_MAX_FIELDSIZ sizeof_member(struct iso_volume_descriptor, volume_set_id) - -struct high_sierra_volume_descriptor { - unsigned char foo[8]; - unsigned char type; - unsigned char id[5]; - unsigned char version; - unsigned char unused1; - unsigned char system_id[32]; - unsigned char volume_id[32]; -} __attribute__((packed)); - -/* old High Sierra format */ -static int probe_iso9660_hsfs(blkid_probe pr, const struct blkid_idmag *mag) -{ - struct high_sierra_volume_descriptor *iso; +#define ISO_MAX_FIELDSIZ sizeof_member(struct iso_volume_descriptor, iso.volume_set_id) - iso = blkid_probe_get_sb(pr, mag, struct high_sierra_volume_descriptor); - if (!iso) - return errno ? -errno : 1; - - blkid_probe_set_fsblocksize(pr, ISO_SECTOR_SIZE); - blkid_probe_set_block_size(pr, ISO_SECTOR_SIZE); - blkid_probe_set_version(pr, "High Sierra"); - blkid_probe_set_label(pr, iso->volume_id, sizeof(iso->volume_id)); - return 0; -} - -static int probe_iso9660_set_uuid (blkid_probe pr, const struct iso9660_date *date) +static int probe_iso9660_set_uuid (blkid_probe pr, const struct hs_date *date, unsigned char offset) { unsigned char buffer[16]; unsigned int i, zeros = 0; @@ -130,7 +147,7 @@ static int probe_iso9660_set_uuid (blkid_probe pr, const struct iso9660_date *da zeros++; /* due to the iso9660 standard if all date fields are '0' and offset is 0, the date is unset */ - if (zeros == sizeof(buffer) && date->offset == 0) + if (zeros == sizeof(buffer) && offset == 0) return 0; /* generate an UUID using this date and return success */ @@ -216,9 +233,15 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) struct iso_volume_descriptor *joliet = NULL; /* space for merge_utf16be_ascii(ISO_ID_BUFSIZ bytes) */ unsigned char buf[ISO_MAX_FIELDSIZ * 5 / 2]; + const struct hs_date *modified; + const struct hs_date *created; + unsigned char modified_offset; + unsigned char created_offset; size_t len; + int is_hs; int is_unicode_empty; - int is_ascii_empty; + int is_ascii_hs_empty; + int is_ascii_iso_empty; int i; uint64_t off; @@ -228,13 +251,12 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) if (off % ISO_SECTOR_SIZE) return 1; - if (strcmp(mag->magic, "CDROM") == 0) - return probe_iso9660_hsfs(pr, mag); + is_hs = (strcmp(mag->magic, "CDROM") == 0); - for (i = 0, off += ISO_SUPERBLOCK_OFFSET; i < ISO_VD_MAX && (!boot || !pvd || !joliet); i++, off += ISO_SECTOR_SIZE) { - unsigned char *desc = + for (i = 0, off += ISO_SUPERBLOCK_OFFSET; i < ISO_VD_MAX && (!boot || !pvd || (!is_hs && !joliet)); i++, off += ISO_SECTOR_SIZE) { + const unsigned char *desc = blkid_probe_get_buffer(pr, - off, + off + (is_hs ? 8 : 0), /* High Sierra has 8 bytes before descriptor with Volume Descriptor LBN value */ max(sizeof(struct boot_record), sizeof(struct iso_volume_descriptor))); @@ -244,7 +266,7 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) boot = (struct boot_record *)desc; else if (!pvd && desc[0] == ISO_VD_PRIMARY) pvd = (struct iso_volume_descriptor *)desc; - else if (!joliet && desc[0] == ISO_VD_SUPPLEMENTARY) { + else if (!is_hs && !joliet && desc[0] == ISO_VD_SUPPLEMENTARY) { joliet = (struct iso_volume_descriptor *)desc; if (memcmp(joliet->escape_sequences, "%/@", 3) != 0 && memcmp(joliet->escape_sequences, "%/C", 3) != 0 && @@ -270,43 +292,66 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) else blkid_probe_set_id_label(pr, "SYSTEM_ID", pvd->system_id, sizeof(pvd->system_id)); - if (joliet && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->volume_set_id, pvd->volume_set_id, sizeof(pvd->volume_set_id))) != 0) + if (joliet && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->iso.volume_set_id, pvd->iso.volume_set_id, sizeof(pvd->iso.volume_set_id))) != 0) blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", buf, len, UL_ENCODE_UTF16BE); else if (joliet) - blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", joliet->volume_set_id, sizeof(joliet->volume_set_id), UL_ENCODE_UTF16BE); + blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", joliet->iso.volume_set_id, sizeof(joliet->iso.volume_set_id), UL_ENCODE_UTF16BE); + else if (is_hs) + blkid_probe_set_id_label(pr, "VOLUME_SET_ID", pvd->hs.volume_set_id, sizeof(pvd->hs.volume_set_id)); else - blkid_probe_set_id_label(pr, "VOLUME_SET_ID", pvd->volume_set_id, sizeof(pvd->volume_set_id)); + blkid_probe_set_id_label(pr, "VOLUME_SET_ID", pvd->iso.volume_set_id, sizeof(pvd->iso.volume_set_id)); - is_ascii_empty = (is_str_empty(pvd->publisher_id, sizeof(pvd->publisher_id)) || pvd->publisher_id[0] == '_'); - is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->publisher_id, sizeof(joliet->publisher_id)) || (joliet->publisher_id[0] == 0x00 && joliet->publisher_id[1] == '_')); - if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->publisher_id, pvd->publisher_id, sizeof(pvd->publisher_id))) != 0) + is_ascii_hs_empty = (!is_hs || is_str_empty(pvd->hs.publisher_id, sizeof(pvd->hs.publisher_id)) || pvd->hs.publisher_id[0] == '_'); + is_ascii_iso_empty = (is_hs || is_str_empty(pvd->iso.publisher_id, sizeof(pvd->iso.publisher_id)) || pvd->iso.publisher_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->iso.publisher_id, sizeof(joliet->iso.publisher_id)) || (joliet->iso.publisher_id[0] == 0x00 && joliet->iso.publisher_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_iso_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->iso.publisher_id, pvd->iso.publisher_id, sizeof(pvd->iso.publisher_id))) != 0) blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", buf, len, UL_ENCODE_UTF16BE); else if (!is_unicode_empty) - blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", joliet->publisher_id, sizeof(joliet->publisher_id), UL_ENCODE_UTF16BE); - else if (!is_ascii_empty) - blkid_probe_set_id_label(pr, "PUBLISHER_ID", pvd->publisher_id, sizeof(pvd->publisher_id)); - - is_ascii_empty = (is_str_empty(pvd->data_preparer_id, sizeof(pvd->data_preparer_id)) || pvd->data_preparer_id[0] == '_'); - is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->data_preparer_id, sizeof(joliet->data_preparer_id)) || (joliet->data_preparer_id[0] == 0x00 && joliet->data_preparer_id[1] == '_')); - if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->data_preparer_id, pvd->data_preparer_id, sizeof(pvd->data_preparer_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", joliet->iso.publisher_id, sizeof(joliet->iso.publisher_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_hs_empty) + blkid_probe_set_id_label(pr, "PUBLISHER_ID", pvd->hs.publisher_id, sizeof(pvd->hs.publisher_id)); + else if (!is_ascii_iso_empty) + blkid_probe_set_id_label(pr, "PUBLISHER_ID", pvd->iso.publisher_id, sizeof(pvd->iso.publisher_id)); + + is_ascii_hs_empty = (!is_hs || is_str_empty(pvd->hs.data_preparer_id, sizeof(pvd->hs.data_preparer_id)) || pvd->hs.data_preparer_id[0] == '_'); + is_ascii_iso_empty = (is_hs || is_str_empty(pvd->iso.data_preparer_id, sizeof(pvd->iso.data_preparer_id)) || pvd->iso.data_preparer_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->iso.data_preparer_id, sizeof(joliet->iso.data_preparer_id)) || (joliet->iso.data_preparer_id[0] == 0x00 && joliet->iso.data_preparer_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_iso_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->iso.data_preparer_id, pvd->iso.data_preparer_id, sizeof(pvd->iso.data_preparer_id))) != 0) blkid_probe_set_utf8_id_label(pr, "DATA_PREPARER_ID", buf, len, UL_ENCODE_UTF16BE); else if (!is_unicode_empty) - blkid_probe_set_utf8_id_label(pr, "DATA_PREPARER_ID", joliet->data_preparer_id, sizeof(joliet->data_preparer_id), UL_ENCODE_UTF16BE); - else if (!is_ascii_empty) - blkid_probe_set_id_label(pr, "DATA_PREPARER_ID", pvd->data_preparer_id, sizeof(pvd->data_preparer_id)); - - is_ascii_empty = (is_str_empty(pvd->application_id, sizeof(pvd->application_id)) || pvd->application_id[0] == '_'); - is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->application_id, sizeof(joliet->application_id)) || (joliet->application_id[0] == 0x00 && joliet->application_id[1] == '_')); - if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->application_id, pvd->application_id, sizeof(pvd->application_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "DATA_PREPARER_ID", joliet->iso.data_preparer_id, sizeof(joliet->iso.data_preparer_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_hs_empty) + blkid_probe_set_id_label(pr, "DATA_PREPARER_ID", pvd->hs.data_preparer_id, sizeof(pvd->hs.data_preparer_id)); + else if (!is_ascii_iso_empty) + blkid_probe_set_id_label(pr, "DATA_PREPARER_ID", pvd->iso.data_preparer_id, sizeof(pvd->iso.data_preparer_id)); + + is_ascii_hs_empty = (!is_hs || is_str_empty(pvd->hs.application_id, sizeof(pvd->hs.application_id)) || pvd->hs.application_id[0] == '_'); + is_ascii_iso_empty = (is_hs || is_str_empty(pvd->iso.application_id, sizeof(pvd->iso.application_id)) || pvd->iso.application_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->iso.application_id, sizeof(joliet->iso.application_id)) || (joliet->iso.application_id[0] == 0x00 && joliet->iso.application_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_iso_empty && (len = merge_utf16be_ascii(buf, sizeof(buf), joliet->iso.application_id, pvd->iso.application_id, sizeof(pvd->iso.application_id))) != 0) blkid_probe_set_utf8_id_label(pr, "APPLICATION_ID", buf, len, UL_ENCODE_UTF16BE); else if (!is_unicode_empty) - blkid_probe_set_utf8_id_label(pr, "APPLICATION_ID", joliet->application_id, sizeof(joliet->application_id), UL_ENCODE_UTF16BE); - else if (!is_ascii_empty) - blkid_probe_set_id_label(pr, "APPLICATION_ID", pvd->application_id, sizeof(pvd->application_id)); + blkid_probe_set_utf8_id_label(pr, "APPLICATION_ID", joliet->iso.application_id, sizeof(joliet->iso.application_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_hs_empty) + blkid_probe_set_id_label(pr, "APPLICATION_ID", pvd->hs.application_id, sizeof(pvd->hs.application_id)); + else if (!is_ascii_iso_empty) + blkid_probe_set_id_label(pr, "APPLICATION_ID", pvd->iso.application_id, sizeof(pvd->iso.application_id)); + + if (is_hs) { + modified = &pvd->hs.modified; + created = &pvd->hs.created; + modified_offset = 0; + created_offset = 0; + } else { + modified = &pvd->iso.modified.common; + created = &pvd->iso.created.common; + modified_offset = pvd->iso.modified.offset; + created_offset = pvd->iso.created.offset; + } /* create an UUID using the modified/created date */ - if (! probe_iso9660_set_uuid(pr, &pvd->modified)) - probe_iso9660_set_uuid(pr, &pvd->created); + if (! probe_iso9660_set_uuid(pr, modified, modified_offset)) + probe_iso9660_set_uuid(pr, created, created_offset); if (boot) blkid_probe_set_id_label(pr, "BOOT_SYSTEM_ID", @@ -315,6 +360,8 @@ static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) if (joliet) blkid_probe_set_version(pr, "Joliet Extension"); + else if (is_hs) + blkid_probe_set_version(pr, "High Sierra"); /* Label in Joliet is UNICODE (UTF16BE) but can contain only 16 characters. Label in PVD is * subset of ASCII but can contain up to the 32 characters. Non-representable characters are @@ -340,6 +387,10 @@ const struct blkid_idinfo iso9660_idinfo = .flags = BLKID_IDINFO_TOLERANT, .magics = { + /* + * Due to different location of vd_id[] in ISO9660 and High Sierra, IS9660 can match + * also High Sierra vd_id[]. So always check ISO9660 (CD001) before High Sierra (CDROM). + */ { .magic = "CD001", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, { .magic = "CDROM", .len = 5, .kboff = 32, .sboff = 9, .hoff = "session_offset" }, { NULL } |