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Diffstat (limited to 'extras/volume_id/lib/hfs.c')
-rw-r--r--extras/volume_id/lib/hfs.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/extras/volume_id/lib/hfs.c b/extras/volume_id/lib/hfs.c
deleted file mode 100644
index 903378b34e..0000000000
--- a/extras/volume_id/lib/hfs.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * volume_id - reads filesystem label and uuid
- *
- * Copyright (C) 2004-2008 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"
-#include "md5.h"
-
-struct hfs_finder_info{
- uint32_t boot_folder;
- uint32_t start_app;
- uint32_t open_folder;
- uint32_t os9_folder;
- uint32_t reserved;
- uint32_t osx_folder;
- uint8_t id[8];
-} PACKED;
-
-static struct hfs_mdb {
- uint8_t signature[2];
- uint32_t cr_date;
- uint32_t ls_Mod;
- uint16_t atrb;
- uint16_t nm_fls;
- uint16_t vbm_st;
- uint16_t alloc_ptr;
- uint16_t nm_al_blks;
- uint32_t al_blk_size;
- uint32_t clp_size;
- uint16_t al_bl_st;
- uint32_t nxt_cnid;
- uint16_t free_bks;
- uint8_t label_len;
- uint8_t label[27];
- uint32_t vol_bkup;
- uint16_t vol_seq_num;
- uint32_t wr_cnt;
- uint32_t xt_clump_size;
- uint32_t ct_clump_size;
- uint16_t num_root_dirs;
- uint32_t file_count;
- uint32_t dir_count;
- struct hfs_finder_info finder_info;
- uint8_t embed_sig[2];
- uint16_t embed_startblock;
- uint16_t embed_blockcount;
-} PACKED *hfs;
-
-struct hfsplus_bnode_descriptor {
- uint32_t next;
- uint32_t prev;
- uint8_t type;
- uint8_t height;
- uint16_t num_recs;
- uint16_t reserved;
-} PACKED;
-
-struct hfsplus_bheader_record {
- uint16_t depth;
- uint32_t root;
- uint32_t leaf_count;
- uint32_t leaf_head;
- uint32_t leaf_tail;
- uint16_t node_size;
-} PACKED;
-
-struct hfsplus_catalog_key {
- uint16_t key_len;
- uint32_t parent_id;
- uint16_t unicode_len;
- uint8_t unicode[255 * 2];
-} PACKED;
-
-struct hfsplus_extent {
- uint32_t start_block;
- uint32_t block_count;
-} PACKED;
-
-#define HFSPLUS_EXTENT_COUNT 8
-struct hfsplus_fork {
- uint64_t total_size;
- uint32_t clump_size;
- uint32_t total_blocks;
- struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
-} PACKED;
-
-static struct hfsplus_vol_header {
- uint8_t signature[2];
- uint16_t version;
- uint32_t attributes;
- uint32_t last_mount_vers;
- uint32_t reserved;
- uint32_t create_date;
- uint32_t modify_date;
- uint32_t backup_date;
- uint32_t checked_date;
- uint32_t file_count;
- uint32_t folder_count;
- uint32_t blocksize;
- uint32_t total_blocks;
- uint32_t free_blocks;
- uint32_t next_alloc;
- uint32_t rsrc_clump_sz;
- uint32_t data_clump_sz;
- uint32_t next_cnid;
- uint32_t write_count;
- uint64_t encodings_bmp;
- struct hfs_finder_info finder_info;
- struct hfsplus_fork alloc_file;
- struct hfsplus_fork ext_file;
- struct hfsplus_fork cat_file;
- struct hfsplus_fork attr_file;
- struct hfsplus_fork start_file;
-} PACKED *hfsplus;
-
-#define HFS_SUPERBLOCK_OFFSET 0x400
-#define HFS_NODE_LEAF 0xff
-#define HFSPLUS_POR_CNID 1
-
-static void hfsid_set_uuid(struct volume_id *id, const uint8_t *hfs_id)
-{
- struct md5_ctx md5c;
- static const uint8_t hash_init[16] = {
- 0xb3, 0xe2, 0x0f, 0x39, 0xf2, 0x92, 0x11, 0xd6,
- 0x97, 0xa4, 0x00, 0x30, 0x65, 0x43, 0xec, 0xac
- };
- uint8_t uuid[16];
-
- if (*((uint64_t *)hfs_id) == 0)
- return;
-
- md5_init(&md5c);
- md5_update(&md5c, hash_init, 16);
- md5_update(&md5c, hfs_id, 8);
- md5_final(&md5c, uuid);
-
- uuid[6] = 0x30 | (uuid[6] & 0x0f);
- uuid[8] = 0x80 | (uuid[8] & 0x3f);
- volume_id_set_uuid(id, uuid, 0, UUID_DCE);
-}
-
-int volume_id_probe_hfs_hfsplus(struct volume_id *id, uint64_t off, uint64_t size)
-{
- unsigned int blocksize;
- unsigned int cat_block;
- unsigned int ext_block_start;
- unsigned int ext_block_count;
- int ext;
- unsigned int leaf_node_head;
- unsigned int leaf_node_count;
- unsigned int leaf_node_size;
- unsigned int leaf_block;
- uint64_t leaf_off;
- unsigned int alloc_block_size;
- unsigned int alloc_first_block;
- unsigned int embed_first_block;
- unsigned int record_count;
- struct hfsplus_bnode_descriptor *descr;
- struct hfsplus_bheader_record *bnode;
- struct hfsplus_catalog_key *key;
- unsigned int label_len;
- struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
- const uint8_t *buf;
-
- info("probing at offset 0x%" PRIx64 "\n", off);
-
- buf = volume_id_get_buffer(id, off + HFS_SUPERBLOCK_OFFSET, 0x200);
- if (buf == NULL)
- return -1;
-
- hfs = (struct hfs_mdb *) buf;
- if (memcmp(hfs->signature, "BD", 2) != 0)
- goto checkplus;
-
- /* it may be just a hfs wrapper for hfs+ */
- if (memcmp(hfs->embed_sig, "H+", 2) == 0) {
- alloc_block_size = be32_to_cpu(hfs->al_blk_size);
- dbg("alloc_block_size 0x%x\n", alloc_block_size);
-
- alloc_first_block = be16_to_cpu(hfs->al_bl_st);
- dbg("alloc_first_block 0x%x\n", alloc_first_block);
-
- embed_first_block = be16_to_cpu(hfs->embed_startblock);
- dbg("embed_first_block 0x%x\n", embed_first_block);
-
- off += (alloc_first_block * 512) +
- (embed_first_block * alloc_block_size);
- dbg("hfs wrapped hfs+ found at offset 0x%" PRIx64 "\n", off);
-
- buf = volume_id_get_buffer(id, off + HFS_SUPERBLOCK_OFFSET, 0x200);
- if (buf == NULL)
- return -1;
- goto checkplus;
- }
-
- if (hfs->label_len > 0 && hfs->label_len < 28) {
- volume_id_set_label_raw(id, hfs->label, hfs->label_len);
- volume_id_set_label_string(id, hfs->label, hfs->label_len) ;
- }
-
- hfsid_set_uuid(id, hfs->finder_info.id);
-
- volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
- id->type = "hfs";
-
- return 0;
-
-checkplus:
- hfsplus = (struct hfsplus_vol_header *) buf;
- if (memcmp(hfsplus->signature, "H+", 2) == 0)
- goto hfsplus;
- if (memcmp(hfsplus->signature, "HX", 2) == 0)
- goto hfsplus;
- return -1;
-
-hfsplus:
- hfsid_set_uuid(id, hfsplus->finder_info.id);
-
- blocksize = be32_to_cpu(hfsplus->blocksize);
- dbg("blocksize %u\n", blocksize);
-
- memcpy(extents, hfsplus->cat_file.extents, sizeof(extents));
- cat_block = be32_to_cpu(extents[0].start_block);
- dbg("catalog start block 0x%x\n", cat_block);
-
- buf = volume_id_get_buffer(id, off + (cat_block * blocksize), 0x2000);
- if (buf == NULL)
- goto found;
-
- bnode = (struct hfsplus_bheader_record *)
- &buf[sizeof(struct hfsplus_bnode_descriptor)];
-
- leaf_node_head = be32_to_cpu(bnode->leaf_head);
- dbg("catalog leaf node 0x%x\n", leaf_node_head);
-
- leaf_node_size = be16_to_cpu(bnode->node_size);
- dbg("leaf node size 0x%x\n", leaf_node_size);
-
- leaf_node_count = be32_to_cpu(bnode->leaf_count);
- dbg("leaf node count 0x%x\n", leaf_node_count);
- if (leaf_node_count == 0)
- goto found;
-
- leaf_block = (leaf_node_head * leaf_node_size) / blocksize;
-
- /* get physical location */
- for (ext = 0; ext < HFSPLUS_EXTENT_COUNT; ext++) {
- ext_block_start = be32_to_cpu(extents[ext].start_block);
- ext_block_count = be32_to_cpu(extents[ext].block_count);
- dbg("extent start block 0x%x, count 0x%x\n", ext_block_start, ext_block_count);
-
- if (ext_block_count == 0)
- goto found;
-
- /* this is our extent */
- if (leaf_block < ext_block_count)
- break;
-
- leaf_block -= ext_block_count;
- }
- if (ext == HFSPLUS_EXTENT_COUNT)
- goto found;
- dbg("found block in extent %i\n", ext);
-
- leaf_off = (ext_block_start + leaf_block) * blocksize;
-
- buf = volume_id_get_buffer(id, off + leaf_off, leaf_node_size);
- if (buf == NULL)
- goto found;
-
- descr = (struct hfsplus_bnode_descriptor *) buf;
- dbg("descriptor type 0x%x\n", descr->type);
-
- record_count = be16_to_cpu(descr->num_recs);
- dbg("number of records %u\n", record_count);
- if (record_count == 0)
- goto found;
-
- if (descr->type != HFS_NODE_LEAF)
- goto found;
-
- key = (struct hfsplus_catalog_key *)
- &buf[sizeof(struct hfsplus_bnode_descriptor)];
-
- dbg("parent id 0x%x\n", be32_to_cpu(key->parent_id));
- if (be32_to_cpu(key->parent_id) != HFSPLUS_POR_CNID)
- goto found;
-
- label_len = be16_to_cpu(key->unicode_len) * 2;
- dbg("label unicode16 len %i\n", label_len);
- volume_id_set_label_raw(id, key->unicode, label_len);
- volume_id_set_label_unicode16(id, key->unicode, BE, label_len);
-
-found:
- volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
- id->type = "hfsplus";
-
- return 0;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-02-01 05:02:23 +0000