diff options
Diffstat (limited to 'libblkid/hfs.c')
| -rw-r--r-- | libblkid/hfs.c | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/libblkid/hfs.c b/libblkid/hfs.c deleted file mode 100644 index 6d960e9e7..000000000 --- a/libblkid/hfs.c +++ /dev/null @@ -1,321 +0,0 @@ -/* - * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org> - * Copyright (C) 2008 Karel Zak <kzak@redhat.com> - * - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - */ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <inttypes.h> - -#include "superblocks.h" -#include "md5.h" - -/* HFS / HFS+ */ -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]; -} __attribute__((packed)); - -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; -} __attribute__((packed)); - - -#define HFS_NODE_LEAF 0xff -#define HFSPLUS_POR_CNID 1 - -struct hfsplus_bnode_descriptor { - uint32_t next; - uint32_t prev; - uint8_t type; - uint8_t height; - uint16_t num_recs; - uint16_t reserved; -} __attribute__((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; -} __attribute__((packed)); - -struct hfsplus_catalog_key { - uint16_t key_len; - uint32_t parent_id; - uint16_t unicode_len; - uint8_t unicode[255 * 2]; -} __attribute__((packed)); - -struct hfsplus_extent { - uint32_t start_block; - uint32_t block_count; -} __attribute__((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]; -} __attribute__((packed)); - -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; -} __attribute__((packed)); - -#define HFSPLUS_SECTOR_SIZE 512 - -static int hfs_set_uuid(blkid_probe pr, unsigned char const *hfs_info, size_t len) -{ - static unsigned char const hash_init[MD5LENGTH] = { - 0xb3, 0xe2, 0x0f, 0x39, 0xf2, 0x92, 0x11, 0xd6, - 0x97, 0xa4, 0x00, 0x30, 0x65, 0x43, 0xec, 0xac - }; - unsigned char uuid[MD5LENGTH]; - struct MD5Context md5c; - - if (memcmp(hfs_info, "\0\0\0\0\0\0\0\0", len) == 0) - return -1; - MD5Init(&md5c); - MD5Update(&md5c, hash_init, MD5LENGTH); - MD5Update(&md5c, hfs_info, len); - MD5Final(uuid, &md5c); - uuid[6] = 0x30 | (uuid[6] & 0x0f); - uuid[8] = 0x80 | (uuid[8] & 0x3f); - return blkid_probe_set_uuid(pr, uuid); -} - -static int probe_hfs(blkid_probe pr, const struct blkid_idmag *mag) -{ - struct hfs_mdb *hfs; - - hfs = blkid_probe_get_sb(pr, mag, struct hfs_mdb); - if (!hfs) - return -1; - - if ((memcmp(hfs->embed_sig, "H+", 2) == 0) || - (memcmp(hfs->embed_sig, "HX", 2) == 0)) - return 1; /* Not hfs, but an embedded HFS+ */ - - hfs_set_uuid(pr, hfs->finder_info.id, sizeof(hfs->finder_info.id)); - - blkid_probe_set_label(pr, hfs->label, hfs->label_len); - return 0; -} - -static int probe_hfsplus(blkid_probe pr, const struct blkid_idmag *mag) -{ - struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; - struct hfsplus_bnode_descriptor *descr; - struct hfsplus_bheader_record *bnode; - struct hfsplus_catalog_key *key; - struct hfsplus_vol_header *hfsplus; - struct hfs_mdb *sbd; - unsigned int alloc_block_size; - unsigned int alloc_first_block; - unsigned int embed_first_block; - unsigned int off = 0; - unsigned int blocksize; - unsigned int cat_block; - unsigned int ext_block_start; - unsigned int ext_block_count; - unsigned int record_count; - unsigned int leaf_node_head; - unsigned int leaf_node_count; - unsigned int leaf_node_size; - unsigned int leaf_block; - int ext; - uint64_t leaf_off; - unsigned char *buf; - - sbd = blkid_probe_get_sb(pr, mag, struct hfs_mdb); - if (!sbd) - return -1; - - /* Check for a HFS+ volume embedded in a HFS volume */ - if (memcmp(sbd->signature, "BD", 2) == 0) { - if ((memcmp(sbd->embed_sig, "H+", 2) != 0) && - (memcmp(sbd->embed_sig, "HX", 2) != 0)) - /* This must be an HFS volume, so fail */ - return 1; - - alloc_block_size = be32_to_cpu(sbd->al_blk_size); - alloc_first_block = be16_to_cpu(sbd->al_bl_st); - embed_first_block = be16_to_cpu(sbd->embed_startblock); - off = (alloc_first_block * 512) + - (embed_first_block * alloc_block_size); - - buf = blkid_probe_get_buffer(pr, - off + (mag->kboff * 1024), - sizeof(struct hfsplus_vol_header)); - hfsplus = (struct hfsplus_vol_header *) buf; - - } else - hfsplus = blkid_probe_get_sb(pr, mag, - struct hfsplus_vol_header); - - if (!hfsplus) - return -1; - - if ((memcmp(hfsplus->signature, "H+", 2) != 0) && - (memcmp(hfsplus->signature, "HX", 2) != 0)) - return 1; - - hfs_set_uuid(pr, hfsplus->finder_info.id, sizeof(hfsplus->finder_info.id)); - - blocksize = be32_to_cpu(hfsplus->blocksize); - if (blocksize < HFSPLUS_SECTOR_SIZE) - return -1; - - memcpy(extents, hfsplus->cat_file.extents, sizeof(extents)); - cat_block = be32_to_cpu(extents[0].start_block); - - buf = blkid_probe_get_buffer(pr, - off + ((blkid_loff_t) cat_block * blocksize), 0x2000); - if (!buf) - return 0; - - bnode = (struct hfsplus_bheader_record *) - &buf[sizeof(struct hfsplus_bnode_descriptor)]; - - leaf_node_head = be32_to_cpu(bnode->leaf_head); - leaf_node_size = be16_to_cpu(bnode->node_size); - leaf_node_count = be32_to_cpu(bnode->leaf_count); - if (leaf_node_count == 0) - return 0; - - 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); - if (ext_block_count == 0) - return 0; - - /* this is our extent */ - if (leaf_block < ext_block_count) - break; - - leaf_block -= ext_block_count; - } - if (ext == HFSPLUS_EXTENT_COUNT) - return 0; - - leaf_off = (ext_block_start + leaf_block) * blocksize; - - buf = blkid_probe_get_buffer(pr, - (blkid_loff_t) off + leaf_off, - leaf_node_size); - if (!buf) - return 0; - - descr = (struct hfsplus_bnode_descriptor *) buf; - record_count = be16_to_cpu(descr->num_recs); - if (record_count == 0) - return 0; - - if (descr->type != HFS_NODE_LEAF) - return 0; - - key = (struct hfsplus_catalog_key *) - &buf[sizeof(struct hfsplus_bnode_descriptor)]; - - if (be32_to_cpu(key->parent_id) != HFSPLUS_POR_CNID) - return 0; - - blkid_probe_set_utf8label(pr, key->unicode, - be16_to_cpu(key->unicode_len) * 2, - BLKID_ENC_UTF16BE); - return 0; -} - -const struct blkid_idinfo hfs_idinfo = -{ - .name = "hfs", - .usage = BLKID_USAGE_FILESYSTEM, - .probefunc = probe_hfs, - .flags = BLKID_IDINFO_TOLERANT, - .magics = - { - { .magic = "BD", .len = 2, .kboff = 1 }, - { NULL } - } -}; - -const struct blkid_idinfo hfsplus_idinfo = -{ - .name = "hfsplus", - .usage = BLKID_USAGE_FILESYSTEM, - .probefunc = probe_hfsplus, - .magics = - { - { .magic = "BD", .len = 2, .kboff = 1 }, - { .magic = "H+", .len = 2, .kboff = 1 }, - { .magic = "HX", .len = 2, .kboff = 1 }, - { NULL } - } -}; |