diff options
Diffstat (limited to 'extras/volume_id/lib/udf.c')
| -rw-r--r-- | extras/volume_id/lib/udf.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/extras/volume_id/lib/udf.c b/extras/volume_id/lib/udf.c deleted file mode 100644 index aed0d76b52..0000000000 --- a/extras/volume_id/lib/udf.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * volume_id - reads filesystem label and uuid - * - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE 1 -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <ctype.h> - -#include "libvolume_id.h" -#include "libvolume_id-private.h" - -struct volume_descriptor { - struct descriptor_tag { - uint16_t id; - uint16_t version; - uint8_t checksum; - uint8_t reserved; - uint16_t serial; - uint16_t crc; - uint16_t crc_len; - uint32_t location; - } PACKED tag; - union { - struct anchor_descriptor { - uint32_t length; - uint32_t location; - } PACKED anchor; - struct primary_descriptor { - uint32_t seq_num; - uint32_t desc_num; - struct dstring { - uint8_t clen; - uint8_t c[31]; - } PACKED ident; - } PACKED primary; - } PACKED type; -} PACKED; - -struct volume_structure_descriptor { - uint8_t type; - uint8_t id[5]; - uint8_t version; -} PACKED; - -#define UDF_VSD_OFFSET 0x8000 - -int volume_id_probe_udf(struct volume_id *id, uint64_t off, uint64_t size) -{ - struct volume_descriptor *vd; - struct volume_structure_descriptor *vsd; - unsigned int bs; - unsigned int b; - unsigned int type; - unsigned int count; - unsigned int loc; - unsigned int clen; - - info("probing at offset 0x%" PRIx64 "\n", off); - - vsd = (struct volume_structure_descriptor *) volume_id_get_buffer(id, off + UDF_VSD_OFFSET, 0x200); - if (vsd == NULL) - return -1; - - if (memcmp(vsd->id, "NSR02", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "NSR03", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "BEA01", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "BOOT2", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "CD001", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "CDW02", 5) == 0) - goto blocksize; - if (memcmp(vsd->id, "TEA03", 5) == 0) - goto blocksize; - return -1; - -blocksize: - /* search the next VSD to get the logical block size of the volume */ - for (bs = 0x800; bs < 0x8000; bs += 0x800) { - vsd = (struct volume_structure_descriptor *) volume_id_get_buffer(id, off + UDF_VSD_OFFSET + bs, 0x800); - if (vsd == NULL) - return -1; - dbg("test for blocksize: 0x%x\n", bs); - if (vsd->id[0] != '\0') - goto nsr; - } - return -1; - -nsr: - /* search the list of VSDs for a NSR descriptor */ - for (b = 0; b < 64; b++) { - vsd = (struct volume_structure_descriptor *) volume_id_get_buffer(id, off + UDF_VSD_OFFSET + (b * bs), 0x800); - if (vsd == NULL) - return -1; - - dbg("vsd: %c%c%c%c%c\n", - vsd->id[0], vsd->id[1], vsd->id[2], vsd->id[3], vsd->id[4]); - - if (vsd->id[0] == '\0') - return -1; - if (memcmp(vsd->id, "NSR02", 5) == 0) - goto anchor; - if (memcmp(vsd->id, "NSR03", 5) == 0) - goto anchor; - } - return -1; - -anchor: - /* read anchor volume descriptor */ - vd = (struct volume_descriptor *) volume_id_get_buffer(id, off + (256 * bs), 0x200); - if (vd == NULL) - return -1; - - type = le16_to_cpu(vd->tag.id); - if (type != 2) /* TAG_ID_AVDP */ - goto found; - - /* get desriptor list address and block count */ - count = le32_to_cpu(vd->type.anchor.length) / bs; - loc = le32_to_cpu(vd->type.anchor.location); - dbg("0x%x descriptors starting at logical secor 0x%x\n", count, loc); - - /* pick the primary descriptor from the list */ - for (b = 0; b < count; b++) { - vd = (struct volume_descriptor *) volume_id_get_buffer(id, off + ((loc + b) * bs), 0x200); - if (vd == NULL) - return -1; - - type = le16_to_cpu(vd->tag.id); - dbg("descriptor type %i\n", type); - - /* check validity */ - if (type == 0) - goto found; - if (le32_to_cpu(vd->tag.location) != loc + b) - goto found; - - if (type == 1) /* TAG_ID_PVD */ - goto pvd; - } - goto found; - -pvd: - volume_id_set_label_raw(id, &(vd->type.primary.ident.clen), 32); - - clen = vd->type.primary.ident.clen; - dbg("label string charsize=%i bit\n", clen); - if (clen == 8) - volume_id_set_label_string(id, vd->type.primary.ident.c, 31); - else if (clen == 16) - volume_id_set_label_unicode16(id, vd->type.primary.ident.c, BE,31); - -found: - volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); - id->type = "udf"; - - return 0; -} |