1442 lines
34 KiB
C
1442 lines
34 KiB
C
/* hfs.c - HFS. */
|
||
/*
|
||
* GRUB -- GRand Unified Bootloader
|
||
* Copyright (C) 2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
|
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*
|
||
* GRUB is free software: you can redistribute it and/or modify
|
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* it under the terms of the GNU General Public License as published by
|
||
* the Free Software Foundation, either version 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
/* HFS is documented at
|
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http://developer.apple.com/documentation/mac/Files/Files-2.html */
|
||
|
||
#include <grub/err.h>
|
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#include <grub/file.h>
|
||
#include <grub/mm.h>
|
||
#include <grub/misc.h>
|
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#include <grub/disk.h>
|
||
#include <grub/dl.h>
|
||
#include <grub/types.h>
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#include <grub/hfs.h>
|
||
#include <grub/i18n.h>
|
||
#include <grub/fshelp.h>
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|
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GRUB_MOD_LICENSE ("GPLv3+");
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||
|
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#define GRUB_HFS_SBLOCK 2
|
||
#define GRUB_HFS_EMBED_HFSPLUS_SIG 0x482B
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||
|
||
#define GRUB_HFS_BLKS (data->blksz >> 9)
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||
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||
#define GRUB_HFS_NODE_LEAF 0xFF
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||
|
||
/* The two supported filesystems a record can have. */
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||
enum
|
||
{
|
||
GRUB_HFS_FILETYPE_DIR = 1,
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||
GRUB_HFS_FILETYPE_FILE = 2
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||
};
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||
|
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/* Catalog node ID (CNID). */
|
||
enum grub_hfs_cnid_type
|
||
{
|
||
GRUB_HFS_CNID_ROOT_PARENT = 1,
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||
GRUB_HFS_CNID_ROOT = 2,
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||
GRUB_HFS_CNID_EXT = 3,
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||
GRUB_HFS_CNID_CAT = 4,
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||
GRUB_HFS_CNID_BAD = 5
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||
};
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||
|
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/* A node descriptor. This is the header of every node. */
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||
struct grub_hfs_node
|
||
{
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||
grub_uint32_t next;
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||
grub_uint32_t prev;
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||
grub_uint8_t type;
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||
grub_uint8_t level;
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grub_uint16_t reccnt;
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||
grub_uint16_t unused;
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||
} GRUB_PACKED;
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|
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/* The head of the B*-Tree. */
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struct grub_hfs_treeheader
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{
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||
grub_uint16_t tree_depth;
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/* The number of the first node. */
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grub_uint32_t root_node;
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grub_uint32_t leaves;
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grub_uint32_t first_leaf;
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grub_uint32_t last_leaf;
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grub_uint16_t node_size;
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grub_uint16_t key_size;
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grub_uint32_t nodes;
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grub_uint32_t free_nodes;
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||
grub_uint8_t unused[76];
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} GRUB_PACKED;
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/* The state of a mounted HFS filesystem. */
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struct grub_hfs_data
|
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{
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struct grub_hfs_sblock sblock;
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grub_disk_t disk;
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||
grub_hfs_datarecord_t extents;
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int fileid;
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int size;
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int ext_root;
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int ext_size;
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int cat_root;
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int cat_size;
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int blksz;
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int log2_blksz;
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int rootdir;
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};
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/* The key as used on disk in a catalog tree. This is used to lookup
|
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file/directory nodes by parent directory ID and filename. */
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struct grub_hfs_catalog_key
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{
|
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grub_uint8_t unused;
|
||
grub_uint32_t parent_dir;
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/* Filename length. */
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grub_uint8_t strlen;
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||
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/* Filename. */
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grub_uint8_t str[31];
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} GRUB_PACKED;
|
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|
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/* The key as used on disk in a extent overflow tree. Using this key
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the extents can be looked up using a fileid and logical start block
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as index. */
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struct grub_hfs_extent_key
|
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{
|
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/* The kind of fork. This is used to store meta information like
|
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icons, attributes, etc. We will only use the datafork, which is
|
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0. */
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grub_uint8_t forktype;
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grub_uint32_t fileid;
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grub_uint16_t first_block;
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} GRUB_PACKED;
|
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|
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/* A directory record. This is used to find out the directory ID. */
|
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struct grub_hfs_dirrec
|
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{
|
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/* For a directory, type == 1. */
|
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grub_uint8_t type;
|
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grub_uint8_t unused[5];
|
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grub_uint32_t dirid;
|
||
grub_uint32_t ctime;
|
||
grub_uint32_t mtime;
|
||
} GRUB_PACKED;
|
||
|
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/* Information about a file. */
|
||
struct grub_hfs_filerec
|
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{
|
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/* For a file, type == 2. */
|
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grub_uint8_t type;
|
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grub_uint8_t unused[19];
|
||
grub_uint32_t fileid;
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||
grub_uint8_t unused2[2];
|
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grub_uint32_t size;
|
||
grub_uint8_t unused3[18];
|
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grub_uint32_t mtime;
|
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grub_uint8_t unused4[22];
|
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|
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/* The first 3 extents of the file. The other extents can be found
|
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in the extent overflow file. */
|
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grub_hfs_datarecord_t extents;
|
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} GRUB_PACKED;
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|
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/* A record descriptor, both key and data, used to pass to call back
|
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functions. */
|
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struct grub_hfs_record
|
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{
|
||
void *key;
|
||
grub_size_t keylen;
|
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void *data;
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grub_size_t datalen;
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};
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static grub_dl_t my_mod;
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static int grub_hfs_find_node (struct grub_hfs_data *, char *,
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grub_uint32_t, int, char *, grub_size_t);
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/* Find block BLOCK of the file FILE in the mounted UFS filesystem
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DATA. The first 3 extents are described by DAT. If cache is set,
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using caching to improve non-random reads. */
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static unsigned int
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grub_hfs_block (struct grub_hfs_data *data, grub_hfs_datarecord_t dat,
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int file, int block, int cache)
|
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{
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grub_hfs_datarecord_t dr;
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int pos = 0;
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struct grub_hfs_extent_key key;
|
||
|
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int tree = 0;
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static int cache_file = 0;
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static int cache_pos = 0;
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static grub_hfs_datarecord_t cache_dr;
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||
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grub_memcpy (dr, dat, sizeof (dr));
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key.forktype = 0;
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key.fileid = grub_cpu_to_be32 (file);
|
||
|
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if (cache && cache_file == file && block > cache_pos)
|
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{
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pos = cache_pos;
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key.first_block = grub_cpu_to_be16 (pos);
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grub_memcpy (dr, cache_dr, sizeof (cache_dr));
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}
|
||
|
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for (;;)
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{
|
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int i;
|
||
|
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/* Try all 3 extents. */
|
||
for (i = 0; i < 3; i++)
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{
|
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/* Check if the block is stored in this extent. */
|
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if (grub_be_to_cpu16 (dr[i].count) + pos > block)
|
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{
|
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int first = grub_be_to_cpu16 (dr[i].first_block);
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||
|
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/* If the cache is enabled, store the current position
|
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in the tree. */
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if (tree && cache)
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{
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cache_file = file;
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cache_pos = pos;
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grub_memcpy (cache_dr, dr, sizeof (cache_dr));
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}
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return (grub_be_to_cpu16 (data->sblock.first_block)
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+ (first + block - pos) * GRUB_HFS_BLKS);
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}
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/* Try the next extent. */
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pos += grub_be_to_cpu16 (dr[i].count);
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}
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/* Lookup the block in the extent overflow file. */
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key.first_block = grub_cpu_to_be16 (pos);
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tree = 1;
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grub_hfs_find_node (data, (char *) &key, data->ext_root,
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1, (char *) &dr, sizeof (dr));
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if (grub_errno)
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return 0;
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}
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}
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/* Read LEN bytes from the file described by DATA starting with byte
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POS. Return the amount of read bytes in READ. */
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static grub_ssize_t
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grub_hfs_read_file (struct grub_hfs_data *data,
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grub_disk_read_hook_t read_hook, void *read_hook_data,
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grub_uint32_t pos, grub_size_t len, char *buf)
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{
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grub_off_t i;
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grub_off_t blockcnt;
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/* Files are at most 2G/4G - 1 bytes on hfs. Avoid 64-bit division.
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Moreover len > 0 as checked in upper layer. */
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blockcnt = (len + pos - 1) / data->blksz + 1;
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for (i = pos / data->blksz; i < blockcnt; i++)
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{
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grub_disk_addr_t blknr;
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grub_off_t blockoff;
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grub_off_t blockend = data->blksz;
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int skipfirst = 0;
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blockoff = pos % data->blksz;
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blknr = grub_hfs_block (data, data->extents, data->fileid, i, 1);
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if (grub_errno)
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return -1;
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/* Last block. */
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if (i == blockcnt - 1)
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{
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blockend = (len + pos) % data->blksz;
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/* The last portion is exactly EXT2_BLOCK_SIZE (data). */
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if (! blockend)
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blockend = data->blksz;
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}
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/* First block. */
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if (i == pos / data->blksz)
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{
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skipfirst = blockoff;
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blockend -= skipfirst;
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}
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/* If the block number is 0 this block is not stored on disk but
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is zero filled instead. */
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if (blknr)
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{
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data->disk->read_hook = read_hook;
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data->disk->read_hook_data = read_hook_data;
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grub_disk_read (data->disk, blknr, skipfirst,
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blockend, buf);
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data->disk->read_hook = 0;
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if (grub_errno)
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return -1;
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}
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buf += data->blksz - skipfirst;
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}
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return len;
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}
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/* Mount the filesystem on the disk DISK. */
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static struct grub_hfs_data *
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grub_hfs_mount (grub_disk_t disk)
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{
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struct grub_hfs_data *data;
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struct grub_hfs_catalog_key key;
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struct grub_hfs_dirrec dir;
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int first_block;
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||
|
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struct
|
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{
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struct grub_hfs_node node;
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struct grub_hfs_treeheader head;
|
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} treehead;
|
||
|
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data = grub_malloc (sizeof (struct grub_hfs_data));
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if (!data)
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return 0;
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||
|
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/* Read the superblock. */
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if (grub_disk_read (disk, GRUB_HFS_SBLOCK, 0,
|
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sizeof (struct grub_hfs_sblock), &data->sblock))
|
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goto fail;
|
||
|
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/* Check if this is a HFS filesystem. */
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if (grub_be_to_cpu16 (data->sblock.magic) != GRUB_HFS_MAGIC
|
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|| data->sblock.blksz == 0
|
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|| (data->sblock.blksz & grub_cpu_to_be32_compile_time (0xc00001ff)))
|
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{
|
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grub_error (GRUB_ERR_BAD_FS, "not an HFS filesystem");
|
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goto fail;
|
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}
|
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/* Check if this is an embedded HFS+ filesystem. */
|
||
if (grub_be_to_cpu16 (data->sblock.embed_sig) == GRUB_HFS_EMBED_HFSPLUS_SIG)
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FS, "embedded HFS+ filesystem");
|
||
goto fail;
|
||
}
|
||
|
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data->blksz = grub_be_to_cpu32 (data->sblock.blksz);
|
||
data->disk = disk;
|
||
|
||
/* Lookup the root node of the extent overflow tree. */
|
||
first_block = ((grub_be_to_cpu16 (data->sblock.extent_recs[0].first_block)
|
||
* GRUB_HFS_BLKS)
|
||
+ grub_be_to_cpu16 (data->sblock.first_block));
|
||
|
||
if (grub_disk_read (data->disk, first_block, 0,
|
||
sizeof (treehead), &treehead))
|
||
goto fail;
|
||
data->ext_root = grub_be_to_cpu32 (treehead.head.root_node);
|
||
data->ext_size = grub_be_to_cpu16 (treehead.head.node_size);
|
||
|
||
/* Lookup the root node of the catalog tree. */
|
||
first_block = ((grub_be_to_cpu16 (data->sblock.catalog_recs[0].first_block)
|
||
* GRUB_HFS_BLKS)
|
||
+ grub_be_to_cpu16 (data->sblock.first_block));
|
||
if (grub_disk_read (data->disk, first_block, 0,
|
||
sizeof (treehead), &treehead))
|
||
goto fail;
|
||
data->cat_root = grub_be_to_cpu32 (treehead.head.root_node);
|
||
data->cat_size = grub_be_to_cpu16 (treehead.head.node_size);
|
||
|
||
if (data->cat_size == 0
|
||
|| data->blksz < data->cat_size
|
||
|| data->blksz < data->ext_size)
|
||
goto fail;
|
||
|
||
/* Lookup the root directory node in the catalog tree using the
|
||
volume name. */
|
||
key.parent_dir = grub_cpu_to_be32_compile_time (1);
|
||
key.strlen = data->sblock.volname[0];
|
||
grub_strcpy ((char *) key.str, (char *) (data->sblock.volname + 1));
|
||
|
||
if (grub_hfs_find_node (data, (char *) &key, data->cat_root,
|
||
0, (char *) &dir, sizeof (dir)) == 0)
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FS, "cannot find the HFS root directory");
|
||
goto fail;
|
||
}
|
||
|
||
if (grub_errno)
|
||
goto fail;
|
||
|
||
data->rootdir = grub_be_to_cpu32 (dir.dirid);
|
||
|
||
return data;
|
||
fail:
|
||
grub_free (data);
|
||
|
||
if (grub_errno == GRUB_ERR_OUT_OF_RANGE)
|
||
grub_error (GRUB_ERR_BAD_FS, "not a HFS filesystem");
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Compare the K1 and K2 catalog file keys using HFS character ordering. */
|
||
static int
|
||
grub_hfs_cmp_catkeys (const struct grub_hfs_catalog_key *k1,
|
||
const struct grub_hfs_catalog_key *k2)
|
||
{
|
||
/* Taken from hfsutils 3.2.6 and converted to a readable form */
|
||
static const unsigned char hfs_charorder[256] = {
|
||
[0x00] = 0,
|
||
[0x01] = 1,
|
||
[0x02] = 2,
|
||
[0x03] = 3,
|
||
[0x04] = 4,
|
||
[0x05] = 5,
|
||
[0x06] = 6,
|
||
[0x07] = 7,
|
||
[0x08] = 8,
|
||
[0x09] = 9,
|
||
[0x0A] = 10,
|
||
[0x0B] = 11,
|
||
[0x0C] = 12,
|
||
[0x0D] = 13,
|
||
[0x0E] = 14,
|
||
[0x0F] = 15,
|
||
[0x10] = 16,
|
||
[0x11] = 17,
|
||
[0x12] = 18,
|
||
[0x13] = 19,
|
||
[0x14] = 20,
|
||
[0x15] = 21,
|
||
[0x16] = 22,
|
||
[0x17] = 23,
|
||
[0x18] = 24,
|
||
[0x19] = 25,
|
||
[0x1A] = 26,
|
||
[0x1B] = 27,
|
||
[0x1C] = 28,
|
||
[0x1D] = 29,
|
||
[0x1E] = 30,
|
||
[0x1F] = 31,
|
||
[' '] = 32, [0xCA] = 32,
|
||
['!'] = 33,
|
||
['"'] = 34,
|
||
[0xD2] = 35,
|
||
[0xD3] = 36,
|
||
[0xC7] = 37,
|
||
[0xC8] = 38,
|
||
['#'] = 39,
|
||
['$'] = 40,
|
||
['%'] = 41,
|
||
['&'] = 42,
|
||
['\''] = 43,
|
||
[0xD4] = 44,
|
||
[0xD5] = 45,
|
||
['('] = 46,
|
||
[')'] = 47,
|
||
['*'] = 48,
|
||
['+'] = 49,
|
||
[','] = 50,
|
||
['-'] = 51,
|
||
['.'] = 52,
|
||
['/'] = 53,
|
||
['0'] = 54,
|
||
['1'] = 55,
|
||
['2'] = 56,
|
||
['3'] = 57,
|
||
['4'] = 58,
|
||
['5'] = 59,
|
||
['6'] = 60,
|
||
['7'] = 61,
|
||
['8'] = 62,
|
||
['9'] = 63,
|
||
[':'] = 64,
|
||
[';'] = 65,
|
||
['<'] = 66,
|
||
['='] = 67,
|
||
['>'] = 68,
|
||
['?'] = 69,
|
||
['@'] = 70,
|
||
['A'] = 71, ['a'] = 71,
|
||
[0x88] = 72, [0xCB] = 72,
|
||
[0x80] = 73, [0x8A] = 73,
|
||
[0x8B] = 74, [0xCC] = 74,
|
||
[0x81] = 75, [0x8C] = 75,
|
||
[0xAE] = 76, [0xBE] = 76,
|
||
['`'] = 77,
|
||
[0x87] = 78,
|
||
[0x89] = 79,
|
||
[0xBB] = 80,
|
||
['B'] = 81, ['b'] = 81,
|
||
['C'] = 82, ['c'] = 82,
|
||
[0x82] = 83, [0x8D] = 83,
|
||
['D'] = 84, ['d'] = 84,
|
||
['E'] = 85, ['e'] = 85,
|
||
[0x83] = 86, [0x8E] = 86,
|
||
[0x8F] = 87,
|
||
[0x90] = 88,
|
||
[0x91] = 89,
|
||
['F'] = 90, ['f'] = 90,
|
||
['G'] = 91, ['g'] = 91,
|
||
['H'] = 92, ['h'] = 92,
|
||
['I'] = 93, ['i'] = 93,
|
||
[0x92] = 94,
|
||
[0x93] = 95,
|
||
[0x94] = 96,
|
||
[0x95] = 97,
|
||
['J'] = 98, ['j'] = 98,
|
||
['K'] = 99, ['k'] = 99,
|
||
['L'] = 100, ['l'] = 100,
|
||
['M'] = 101, ['m'] = 101,
|
||
['N'] = 102, ['n'] = 102,
|
||
[0x84] = 103, [0x96] = 103,
|
||
['O'] = 104, ['o'] = 104,
|
||
[0x85] = 105, [0x9A] = 105,
|
||
[0x9B] = 106, [0xCD] = 106,
|
||
[0xAF] = 107, [0xBF] = 107,
|
||
[0xCE] = 108, [0xCF] = 108,
|
||
[0x97] = 109,
|
||
[0x98] = 110,
|
||
[0x99] = 111,
|
||
[0xBC] = 112,
|
||
['P'] = 113, ['p'] = 113,
|
||
['Q'] = 114, ['q'] = 114,
|
||
['R'] = 115, ['r'] = 115,
|
||
['S'] = 116, ['s'] = 116,
|
||
[0xA7] = 117,
|
||
['T'] = 118, ['t'] = 118,
|
||
['U'] = 119, ['u'] = 119,
|
||
[0x86] = 120, [0x9F] = 120,
|
||
[0x9C] = 121,
|
||
[0x9D] = 122,
|
||
[0x9E] = 123,
|
||
['V'] = 124, ['v'] = 124,
|
||
['W'] = 125, ['w'] = 125,
|
||
['X'] = 126, ['x'] = 126,
|
||
['Y'] = 127, ['y'] = 127,
|
||
[0xD8] = 128,
|
||
['Z'] = 129, ['z'] = 129,
|
||
['['] = 130,
|
||
['\\'] = 131,
|
||
[']'] = 132,
|
||
['^'] = 133,
|
||
['_'] = 134,
|
||
['{'] = 135,
|
||
['|'] = 136,
|
||
['}'] = 137,
|
||
['~'] = 138,
|
||
[0x7F] = 139,
|
||
[0xA0] = 140,
|
||
[0xA1] = 141,
|
||
[0xA2] = 142,
|
||
[0xA3] = 143,
|
||
[0xA4] = 144,
|
||
[0xA5] = 145,
|
||
[0xA6] = 146,
|
||
[0xA8] = 147,
|
||
[0xA9] = 148,
|
||
[0xAA] = 149,
|
||
[0xAB] = 150,
|
||
[0xAC] = 151,
|
||
[0xAD] = 152,
|
||
[0xB0] = 153,
|
||
[0xB1] = 154,
|
||
[0xB2] = 155,
|
||
[0xB3] = 156,
|
||
[0xB4] = 157,
|
||
[0xB5] = 158,
|
||
[0xB6] = 159,
|
||
[0xB7] = 160,
|
||
[0xB8] = 161,
|
||
[0xB9] = 162,
|
||
[0xBA] = 163,
|
||
[0xBD] = 164,
|
||
[0xC0] = 165,
|
||
[0xC1] = 166,
|
||
[0xC2] = 167,
|
||
[0xC3] = 168,
|
||
[0xC4] = 169,
|
||
[0xC5] = 170,
|
||
[0xC6] = 171,
|
||
[0xC9] = 172,
|
||
[0xD0] = 173,
|
||
[0xD1] = 174,
|
||
[0xD6] = 175,
|
||
[0xD7] = 176,
|
||
[0xD9] = 177,
|
||
[0xDA] = 178,
|
||
[0xDB] = 179,
|
||
[0xDC] = 180,
|
||
[0xDD] = 181,
|
||
[0xDE] = 182,
|
||
[0xDF] = 183,
|
||
[0xE0] = 184,
|
||
[0xE1] = 185,
|
||
[0xE2] = 186,
|
||
[0xE3] = 187,
|
||
[0xE4] = 188,
|
||
[0xE5] = 189,
|
||
[0xE6] = 190,
|
||
[0xE7] = 191,
|
||
[0xE8] = 192,
|
||
[0xE9] = 193,
|
||
[0xEA] = 194,
|
||
[0xEB] = 195,
|
||
[0xEC] = 196,
|
||
[0xED] = 197,
|
||
[0xEE] = 198,
|
||
[0xEF] = 199,
|
||
[0xF0] = 200,
|
||
[0xF1] = 201,
|
||
[0xF2] = 202,
|
||
[0xF3] = 203,
|
||
[0xF4] = 204,
|
||
[0xF5] = 205,
|
||
[0xF6] = 206,
|
||
[0xF7] = 207,
|
||
[0xF8] = 208,
|
||
[0xF9] = 209,
|
||
[0xFA] = 210,
|
||
[0xFB] = 211,
|
||
[0xFC] = 212,
|
||
[0xFD] = 213,
|
||
[0xFE] = 214,
|
||
[0xFF] = 215,
|
||
};
|
||
int i;
|
||
int cmp;
|
||
int minlen = (k1->strlen < k2->strlen) ? k1->strlen : k2->strlen;
|
||
|
||
cmp = (grub_be_to_cpu32 (k1->parent_dir) - grub_be_to_cpu32 (k2->parent_dir));
|
||
if (cmp != 0)
|
||
return cmp;
|
||
|
||
for (i = 0; i < minlen; i++)
|
||
{
|
||
cmp = (hfs_charorder[k1->str[i]] - hfs_charorder[k2->str[i]]);
|
||
if (cmp != 0)
|
||
return cmp;
|
||
}
|
||
|
||
/* Shorter strings precede long ones. */
|
||
return (k1->strlen - k2->strlen);
|
||
}
|
||
|
||
|
||
/* Compare the K1 and K2 extent overflow file keys. */
|
||
static int
|
||
grub_hfs_cmp_extkeys (const struct grub_hfs_extent_key *k1,
|
||
const struct grub_hfs_extent_key *k2)
|
||
{
|
||
int cmp = k1->forktype - k2->forktype;
|
||
if (cmp == 0)
|
||
cmp = grub_be_to_cpu32 (k1->fileid) - grub_be_to_cpu32 (k2->fileid);
|
||
if (cmp == 0)
|
||
cmp = (grub_be_to_cpu16 (k1->first_block)
|
||
- grub_be_to_cpu16 (k2->first_block));
|
||
return cmp;
|
||
}
|
||
|
||
|
||
/* Iterate the records in the node with index IDX in the mounted HFS
|
||
filesystem DATA. This node holds data of the type TYPE (0 =
|
||
catalog node, 1 = extent overflow node). If this is set, continue
|
||
iterating to the next node. For every records, call NODE_HOOK. */
|
||
static grub_err_t
|
||
grub_hfs_iterate_records (struct grub_hfs_data *data, int type, int idx,
|
||
int this, int (*node_hook) (struct grub_hfs_node *hnd,
|
||
struct grub_hfs_record *,
|
||
void *hook_arg),
|
||
void *hook_arg)
|
||
{
|
||
grub_size_t nodesize = type == 0 ? data->cat_size : data->ext_size;
|
||
|
||
union node_union
|
||
{
|
||
struct grub_hfs_node node;
|
||
char rawnode[0];
|
||
grub_uint16_t offsets[0];
|
||
} *node;
|
||
|
||
if (nodesize < sizeof (struct grub_hfs_node))
|
||
nodesize = sizeof (struct grub_hfs_node);
|
||
|
||
node = grub_malloc (nodesize);
|
||
if (!node)
|
||
return grub_errno;
|
||
|
||
do
|
||
{
|
||
int i;
|
||
struct grub_hfs_extent *dat;
|
||
int blk;
|
||
grub_uint16_t reccnt;
|
||
|
||
dat = (struct grub_hfs_extent *) (type == 0
|
||
? (&data->sblock.catalog_recs)
|
||
: (&data->sblock.extent_recs));
|
||
|
||
/* Read the node into memory. */
|
||
blk = grub_hfs_block (data, dat,
|
||
(type == 0) ? GRUB_HFS_CNID_CAT : GRUB_HFS_CNID_EXT,
|
||
idx / (data->blksz / nodesize), 0);
|
||
blk += (idx % (data->blksz / nodesize));
|
||
|
||
if (grub_errno || grub_disk_read (data->disk, blk, 0,
|
||
nodesize, node))
|
||
{
|
||
grub_free (node);
|
||
return grub_errno;
|
||
}
|
||
|
||
reccnt = grub_be_to_cpu16 (node->node.reccnt);
|
||
if (reccnt > (nodesize >> 1))
|
||
reccnt = (nodesize >> 1);
|
||
|
||
/* Iterate over all records in this node. */
|
||
for (i = 0; i < reccnt; i++)
|
||
{
|
||
int pos = (nodesize >> 1) - 1 - i;
|
||
struct pointer
|
||
{
|
||
grub_uint8_t keylen;
|
||
grub_uint8_t key;
|
||
} GRUB_PACKED *pnt;
|
||
grub_uint16_t off = grub_be_to_cpu16 (node->offsets[pos]);
|
||
if (off > nodesize - sizeof(*pnt))
|
||
continue;
|
||
pnt = (struct pointer *) (off + node->rawnode);
|
||
if (nodesize < (grub_size_t) off + pnt->keylen + 1)
|
||
continue;
|
||
|
||
struct grub_hfs_record rec =
|
||
{
|
||
&pnt->key,
|
||
pnt->keylen,
|
||
&pnt->key + pnt->keylen +(pnt->keylen + 1) % 2,
|
||
nodesize - off - pnt->keylen - 1
|
||
};
|
||
|
||
if (node_hook (&node->node, &rec, hook_arg))
|
||
{
|
||
grub_free (node);
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
idx = grub_be_to_cpu32 (node->node.next);
|
||
} while (idx && this);
|
||
grub_free (node);
|
||
return 0;
|
||
}
|
||
|
||
struct grub_hfs_find_node_node_found_ctx
|
||
{
|
||
int found;
|
||
int isleaf;
|
||
int done;
|
||
int type;
|
||
const char *key;
|
||
char *datar;
|
||
grub_size_t datalen;
|
||
};
|
||
|
||
static int
|
||
grub_hfs_find_node_node_found (struct grub_hfs_node *hnd, struct grub_hfs_record *rec,
|
||
void *hook_arg)
|
||
{
|
||
struct grub_hfs_find_node_node_found_ctx *ctx = hook_arg;
|
||
int cmp = 1;
|
||
|
||
if (ctx->type == 0)
|
||
cmp = grub_hfs_cmp_catkeys (rec->key, (const void *) ctx->key);
|
||
else
|
||
cmp = grub_hfs_cmp_extkeys (rec->key, (const void *) ctx->key);
|
||
|
||
/* If the key is smaller or equal to the current node, mark the
|
||
entry. In case of a non-leaf mode it will be used to lookup
|
||
the rest of the tree. */
|
||
if (cmp <= 0)
|
||
ctx->found = grub_be_to_cpu32 (grub_get_unaligned32 (rec->data));
|
||
else /* The key can not be found in the tree. */
|
||
return 1;
|
||
|
||
/* Check if this node is a leaf node. */
|
||
if (hnd->type == GRUB_HFS_NODE_LEAF)
|
||
{
|
||
ctx->isleaf = 1;
|
||
|
||
/* Found it!!!! */
|
||
if (cmp == 0)
|
||
{
|
||
ctx->done = 1;
|
||
|
||
grub_memcpy (ctx->datar, rec->data,
|
||
rec->datalen < ctx->datalen ? rec->datalen : ctx->datalen);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Lookup a record in the mounted filesystem DATA using the key KEY.
|
||
The index of the node on top of the tree is IDX. The tree is of
|
||
the type TYPE (0 = catalog node, 1 = extent overflow node). Return
|
||
the data in DATAR with a maximum length of DATALEN. */
|
||
static int
|
||
grub_hfs_find_node (struct grub_hfs_data *data, char *key,
|
||
grub_uint32_t idx, int type, char *datar, grub_size_t datalen)
|
||
{
|
||
struct grub_hfs_find_node_node_found_ctx ctx =
|
||
{
|
||
.found = -1,
|
||
.isleaf = 0,
|
||
.done = 0,
|
||
.type = type,
|
||
.key = key,
|
||
.datar = datar,
|
||
.datalen = datalen
|
||
};
|
||
|
||
do
|
||
{
|
||
ctx.found = -1;
|
||
|
||
if (grub_hfs_iterate_records (data, type, idx, 0, grub_hfs_find_node_node_found, &ctx))
|
||
return 0;
|
||
|
||
if (ctx.found == -1)
|
||
return 0;
|
||
|
||
idx = ctx.found;
|
||
} while (! ctx.isleaf);
|
||
|
||
return ctx.done;
|
||
}
|
||
|
||
struct grub_hfs_iterate_dir_node_found_ctx
|
||
{
|
||
grub_uint32_t dir_be;
|
||
int found;
|
||
int isleaf;
|
||
grub_uint32_t next;
|
||
int (*hook) (struct grub_hfs_record *, void *hook_arg);
|
||
void *hook_arg;
|
||
};
|
||
|
||
static int
|
||
grub_hfs_iterate_dir_node_found (struct grub_hfs_node *hnd, struct grub_hfs_record *rec,
|
||
void *hook_arg)
|
||
{
|
||
struct grub_hfs_iterate_dir_node_found_ctx *ctx = hook_arg;
|
||
struct grub_hfs_catalog_key *ckey = rec->key;
|
||
|
||
/* The lowest key possible with DIR as root directory. */
|
||
const struct grub_hfs_catalog_key key = {0, ctx->dir_be, 0, ""};
|
||
|
||
if (grub_hfs_cmp_catkeys (rec->key, &key) <= 0)
|
||
ctx->found = grub_be_to_cpu32 (grub_get_unaligned32 (rec->data));
|
||
|
||
if (hnd->type == 0xFF && ckey->strlen > 0)
|
||
{
|
||
ctx->isleaf = 1;
|
||
ctx->next = grub_be_to_cpu32 (hnd->next);
|
||
|
||
/* An entry was found. */
|
||
if (ckey->parent_dir == ctx->dir_be)
|
||
return ctx->hook (rec, ctx->hook_arg);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
grub_hfs_iterate_dir_it_dir (struct grub_hfs_node *hnd __attribute ((unused)),
|
||
struct grub_hfs_record *rec,
|
||
void *hook_arg)
|
||
{
|
||
struct grub_hfs_catalog_key *ckey = rec->key;
|
||
struct grub_hfs_iterate_dir_node_found_ctx *ctx = hook_arg;
|
||
|
||
/* Stop when the entries do not match anymore. */
|
||
if (ckey->parent_dir != ctx->dir_be)
|
||
return 1;
|
||
|
||
return ctx->hook (rec, ctx->hook_arg);
|
||
}
|
||
|
||
|
||
/* Iterate over the directory with the id DIR. The tree is searched
|
||
starting with the node ROOT_IDX. For every entry in this directory
|
||
call HOOK. */
|
||
static grub_err_t
|
||
grub_hfs_iterate_dir (struct grub_hfs_data *data, grub_uint32_t root_idx,
|
||
grub_uint32_t dir, int (*hook) (struct grub_hfs_record *, void *hook_arg),
|
||
void *hook_arg)
|
||
{
|
||
struct grub_hfs_iterate_dir_node_found_ctx ctx =
|
||
{
|
||
.dir_be = grub_cpu_to_be32 (dir),
|
||
.found = -1,
|
||
.isleaf = 0,
|
||
.next = 0,
|
||
.hook = hook,
|
||
.hook_arg = hook_arg
|
||
};
|
||
|
||
do
|
||
{
|
||
ctx.found = -1;
|
||
|
||
if (grub_hfs_iterate_records (data, 0, root_idx, 0, grub_hfs_iterate_dir_node_found, &ctx))
|
||
return grub_errno;
|
||
|
||
if (ctx.found == -1)
|
||
return 0;
|
||
|
||
root_idx = ctx.found;
|
||
} while (! ctx.isleaf);
|
||
|
||
/* If there was a matching record in this leaf node, continue the
|
||
iteration until the last record was found. */
|
||
grub_hfs_iterate_records (data, 0, ctx.next, 1, grub_hfs_iterate_dir_it_dir, &ctx);
|
||
return grub_errno;
|
||
}
|
||
|
||
#define MAX_UTF8_PER_MAC_ROMAN 3
|
||
|
||
static const char macroman[0x80][MAX_UTF8_PER_MAC_ROMAN + 1] =
|
||
{
|
||
/* 80 */ "\xc3\x84",
|
||
/* 81 */ "\xc3\x85",
|
||
/* 82 */ "\xc3\x87",
|
||
/* 83 */ "\xc3\x89",
|
||
/* 84 */ "\xc3\x91",
|
||
/* 85 */ "\xc3\x96",
|
||
/* 86 */ "\xc3\x9c",
|
||
/* 87 */ "\xc3\xa1",
|
||
/* 88 */ "\xc3\xa0",
|
||
/* 89 */ "\xc3\xa2",
|
||
/* 8A */ "\xc3\xa4",
|
||
/* 8B */ "\xc3\xa3",
|
||
/* 8C */ "\xc3\xa5",
|
||
/* 8D */ "\xc3\xa7",
|
||
/* 8E */ "\xc3\xa9",
|
||
/* 8F */ "\xc3\xa8",
|
||
/* 90 */ "\xc3\xaa",
|
||
/* 91 */ "\xc3\xab",
|
||
/* 92 */ "\xc3\xad",
|
||
/* 93 */ "\xc3\xac",
|
||
/* 94 */ "\xc3\xae",
|
||
/* 95 */ "\xc3\xaf",
|
||
/* 96 */ "\xc3\xb1",
|
||
/* 97 */ "\xc3\xb3",
|
||
/* 98 */ "\xc3\xb2",
|
||
/* 99 */ "\xc3\xb4",
|
||
/* 9A */ "\xc3\xb6",
|
||
/* 9B */ "\xc3\xb5",
|
||
/* 9C */ "\xc3\xba",
|
||
/* 9D */ "\xc3\xb9",
|
||
/* 9E */ "\xc3\xbb",
|
||
/* 9F */ "\xc3\xbc",
|
||
/* A0 */ "\xe2\x80\xa0",
|
||
/* A1 */ "\xc2\xb0",
|
||
/* A2 */ "\xc2\xa2",
|
||
/* A3 */ "\xc2\xa3",
|
||
/* A4 */ "\xc2\xa7",
|
||
/* A5 */ "\xe2\x80\xa2",
|
||
/* A6 */ "\xc2\xb6",
|
||
/* A7 */ "\xc3\x9f",
|
||
/* A8 */ "\xc2\xae",
|
||
/* A9 */ "\xc2\xa9",
|
||
/* AA */ "\xe2\x84\xa2",
|
||
/* AB */ "\xc2\xb4",
|
||
/* AC */ "\xc2\xa8",
|
||
/* AD */ "\xe2\x89\xa0",
|
||
/* AE */ "\xc3\x86",
|
||
/* AF */ "\xc3\x98",
|
||
/* B0 */ "\xe2\x88\x9e",
|
||
/* B1 */ "\xc2\xb1",
|
||
/* B2 */ "\xe2\x89\xa4",
|
||
/* B3 */ "\xe2\x89\xa5",
|
||
/* B4 */ "\xc2\xa5",
|
||
/* B5 */ "\xc2\xb5",
|
||
/* B6 */ "\xe2\x88\x82",
|
||
/* B7 */ "\xe2\x88\x91",
|
||
/* B8 */ "\xe2\x88\x8f",
|
||
/* B9 */ "\xcf\x80",
|
||
/* BA */ "\xe2\x88\xab",
|
||
/* BB */ "\xc2\xaa",
|
||
/* BC */ "\xc2\xba",
|
||
/* BD */ "\xce\xa9",
|
||
/* BE */ "\xc3\xa6",
|
||
/* BF */ "\xc3\xb8",
|
||
/* C0 */ "\xc2\xbf",
|
||
/* C1 */ "\xc2\xa1",
|
||
/* C2 */ "\xc2\xac",
|
||
/* C3 */ "\xe2\x88\x9a",
|
||
/* C4 */ "\xc6\x92",
|
||
/* C5 */ "\xe2\x89\x88",
|
||
/* C6 */ "\xe2\x88\x86",
|
||
/* C7 */ "\xc2\xab",
|
||
/* C8 */ "\xc2\xbb",
|
||
/* C9 */ "\xe2\x80\xa6",
|
||
/* CA */ "\xc2\xa0",
|
||
/* CB */ "\xc3\x80",
|
||
/* CC */ "\xc3\x83",
|
||
/* CD */ "\xc3\x95",
|
||
/* CE */ "\xc5\x92",
|
||
/* CF */ "\xc5\x93",
|
||
/* D0 */ "\xe2\x80\x93",
|
||
/* D1 */ "\xe2\x80\x94",
|
||
/* D2 */ "\xe2\x80\x9c",
|
||
/* D3 */ "\xe2\x80\x9d",
|
||
/* D4 */ "\xe2\x80\x98",
|
||
/* D5 */ "\xe2\x80\x99",
|
||
/* D6 */ "\xc3\xb7",
|
||
/* D7 */ "\xe2\x97\x8a",
|
||
/* D8 */ "\xc3\xbf",
|
||
/* D9 */ "\xc5\xb8",
|
||
/* DA */ "\xe2\x81\x84",
|
||
/* DB */ "\xe2\x82\xac",
|
||
/* DC */ "\xe2\x80\xb9",
|
||
/* DD */ "\xe2\x80\xba",
|
||
/* DE */ "\xef\xac\x81",
|
||
/* DF */ "\xef\xac\x82",
|
||
/* E0 */ "\xe2\x80\xa1",
|
||
/* E1 */ "\xc2\xb7",
|
||
/* E2 */ "\xe2\x80\x9a",
|
||
/* E3 */ "\xe2\x80\x9e",
|
||
/* E4 */ "\xe2\x80\xb0",
|
||
/* E5 */ "\xc3\x82",
|
||
/* E6 */ "\xc3\x8a",
|
||
/* E7 */ "\xc3\x81",
|
||
/* E8 */ "\xc3\x8b",
|
||
/* E9 */ "\xc3\x88",
|
||
/* EA */ "\xc3\x8d",
|
||
/* EB */ "\xc3\x8e",
|
||
/* EC */ "\xc3\x8f",
|
||
/* ED */ "\xc3\x8c",
|
||
/* EE */ "\xc3\x93",
|
||
/* EF */ "\xc3\x94",
|
||
/* F0 */ "\xef\xa3\xbf",
|
||
/* F1 */ "\xc3\x92",
|
||
/* F2 */ "\xc3\x9a",
|
||
/* F3 */ "\xc3\x9b",
|
||
/* F4 */ "\xc3\x99",
|
||
/* F5 */ "\xc4\xb1",
|
||
/* F6 */ "\xcb\x86",
|
||
/* F7 */ "\xcb\x9c",
|
||
/* F8 */ "\xc2\xaf",
|
||
/* F9 */ "\xcb\x98",
|
||
/* FA */ "\xcb\x99",
|
||
/* FB */ "\xcb\x9a",
|
||
/* FC */ "\xc2\xb8",
|
||
/* FD */ "\xcb\x9d",
|
||
/* FE */ "\xcb\x9b",
|
||
/* FF */ "\xcb\x87",
|
||
};
|
||
|
||
static void
|
||
macroman_to_utf8 (char *to, const grub_uint8_t *from, grub_size_t len,
|
||
int translate_slash)
|
||
{
|
||
char *optr = to;
|
||
const grub_uint8_t *iptr;
|
||
|
||
for (iptr = from; iptr < from + len && *iptr; iptr++)
|
||
{
|
||
/* Translate '/' to ':' as per HFS spec. */
|
||
if (*iptr == '/' && translate_slash)
|
||
{
|
||
*optr++ = ':';
|
||
continue;
|
||
}
|
||
if (!(*iptr & 0x80))
|
||
{
|
||
*optr++ = *iptr;
|
||
continue;
|
||
}
|
||
optr = grub_stpcpy (optr, macroman[*iptr & 0x7f]);
|
||
}
|
||
*optr = 0;
|
||
}
|
||
|
||
static grub_ssize_t
|
||
utf8_to_macroman (grub_uint8_t *to, const char *from)
|
||
{
|
||
grub_uint8_t *end = to + 31;
|
||
grub_uint8_t *optr = to;
|
||
const char *iptr = from;
|
||
|
||
while (*iptr && optr < end)
|
||
{
|
||
int i, clen;
|
||
/* Translate ':' to '/' as per HFS spec. */
|
||
if (*iptr == ':')
|
||
{
|
||
*optr++ = '/';
|
||
iptr++;
|
||
continue;
|
||
}
|
||
if (!(*iptr & 0x80))
|
||
{
|
||
*optr++ = *iptr++;
|
||
continue;
|
||
}
|
||
clen = 2;
|
||
if ((*iptr & 0xf0) == 0xe0)
|
||
clen++;
|
||
for (i = 0; i < 0x80; i++)
|
||
if (grub_memcmp (macroman[i], iptr, clen) == 0)
|
||
break;
|
||
if (i == 0x80)
|
||
break;
|
||
*optr++ = i | 0x80;
|
||
iptr += clen;
|
||
}
|
||
/* Too long or not encodable. */
|
||
if (*iptr)
|
||
return -1;
|
||
return optr - to;
|
||
}
|
||
|
||
union grub_hfs_anyrec {
|
||
struct grub_hfs_filerec frec;
|
||
struct grub_hfs_dirrec dir;
|
||
};
|
||
|
||
struct grub_fshelp_node
|
||
{
|
||
struct grub_hfs_data *data;
|
||
union grub_hfs_anyrec fdrec;
|
||
grub_uint32_t inode;
|
||
};
|
||
|
||
static grub_err_t
|
||
lookup_file (grub_fshelp_node_t dir,
|
||
const char *name,
|
||
grub_fshelp_node_t *foundnode,
|
||
enum grub_fshelp_filetype *foundtype)
|
||
{
|
||
struct grub_hfs_catalog_key key;
|
||
grub_ssize_t slen;
|
||
union grub_hfs_anyrec fdrec;
|
||
|
||
key.parent_dir = grub_cpu_to_be32 (dir->inode);
|
||
slen = utf8_to_macroman (key.str, name);
|
||
if (slen < 0)
|
||
/* Not found */
|
||
return GRUB_ERR_NONE;
|
||
key.strlen = slen;
|
||
|
||
/* Lookup this node. */
|
||
if (! grub_hfs_find_node (dir->data, (char *) &key, dir->data->cat_root,
|
||
0, (char *) &fdrec.frec, sizeof (fdrec.frec)))
|
||
/* Not found */
|
||
return GRUB_ERR_NONE;
|
||
|
||
*foundnode = grub_malloc (sizeof (struct grub_fshelp_node));
|
||
if (!*foundnode)
|
||
return grub_errno;
|
||
|
||
(*foundnode)->inode = grub_be_to_cpu32 (fdrec.dir.dirid);
|
||
(*foundnode)->fdrec = fdrec;
|
||
(*foundnode)->data = dir->data;
|
||
*foundtype = (fdrec.frec.type == GRUB_HFS_FILETYPE_DIR) ? GRUB_FSHELP_DIR : GRUB_FSHELP_REG;
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
/* Find a file or directory with the pathname PATH in the filesystem
|
||
DATA. Return the file record in RETDATA when it is non-zero.
|
||
Return the directory number in RETINODE when it is non-zero. */
|
||
static grub_err_t
|
||
grub_hfs_find_dir (struct grub_hfs_data *data, const char *path,
|
||
grub_fshelp_node_t *found,
|
||
enum grub_fshelp_filetype exptype)
|
||
{
|
||
struct grub_fshelp_node root = {
|
||
.data = data,
|
||
.inode = data->rootdir,
|
||
.fdrec = {
|
||
.frec = {
|
||
.type = GRUB_HFS_FILETYPE_DIR
|
||
}
|
||
}
|
||
};
|
||
grub_err_t err;
|
||
|
||
err = grub_fshelp_find_file_lookup (path, &root, found, lookup_file, NULL, exptype);
|
||
|
||
if (&root == *found)
|
||
{
|
||
*found = grub_malloc (sizeof (root));
|
||
if (!*found)
|
||
return grub_errno;
|
||
grub_memcpy (*found, &root, sizeof (root));
|
||
}
|
||
return err;
|
||
}
|
||
|
||
struct grub_hfs_dir_hook_ctx
|
||
{
|
||
grub_fs_dir_hook_t hook;
|
||
void *hook_data;
|
||
};
|
||
|
||
static int
|
||
grub_hfs_dir_hook (struct grub_hfs_record *rec, void *hook_arg)
|
||
{
|
||
struct grub_hfs_dir_hook_ctx *ctx = hook_arg;
|
||
struct grub_hfs_dirrec *drec = rec->data;
|
||
struct grub_hfs_filerec *frec = rec->data;
|
||
struct grub_hfs_catalog_key *ckey = rec->key;
|
||
char fname[sizeof (ckey->str) * MAX_UTF8_PER_MAC_ROMAN + 1];
|
||
struct grub_dirhook_info info;
|
||
grub_size_t len;
|
||
|
||
grub_memset (fname, 0, sizeof (fname));
|
||
|
||
grub_memset (&info, 0, sizeof (info));
|
||
|
||
len = ckey->strlen;
|
||
if (len > sizeof (ckey->str))
|
||
len = sizeof (ckey->str);
|
||
macroman_to_utf8 (fname, ckey->str, len, 1);
|
||
|
||
info.case_insensitive = 1;
|
||
|
||
if (drec->type == GRUB_HFS_FILETYPE_DIR)
|
||
{
|
||
info.dir = 1;
|
||
info.mtimeset = 1;
|
||
info.inodeset = 1;
|
||
info.mtime = grub_be_to_cpu32 (drec->mtime) - 2082844800;
|
||
info.inode = grub_be_to_cpu32 (drec->dirid);
|
||
return ctx->hook (fname, &info, ctx->hook_data);
|
||
}
|
||
if (frec->type == GRUB_HFS_FILETYPE_FILE)
|
||
{
|
||
info.dir = 0;
|
||
info.mtimeset = 1;
|
||
info.inodeset = 1;
|
||
info.mtime = grub_be_to_cpu32 (frec->mtime) - 2082844800;
|
||
info.inode = grub_be_to_cpu32 (frec->fileid);
|
||
return ctx->hook (fname, &info, ctx->hook_data);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
static grub_err_t
|
||
grub_hfs_dir (grub_device_t device, const char *path, grub_fs_dir_hook_t hook,
|
||
void *hook_data)
|
||
{
|
||
struct grub_hfs_data *data;
|
||
struct grub_hfs_dir_hook_ctx ctx =
|
||
{
|
||
.hook = hook,
|
||
.hook_data = hook_data
|
||
};
|
||
grub_fshelp_node_t found = NULL;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
data = grub_hfs_mount (device->disk);
|
||
if (!data)
|
||
goto fail;
|
||
|
||
/* First the directory ID for the directory. */
|
||
if (grub_hfs_find_dir (data, path, &found, GRUB_FSHELP_DIR))
|
||
goto fail;
|
||
|
||
grub_hfs_iterate_dir (data, data->cat_root, found->inode, grub_hfs_dir_hook, &ctx);
|
||
|
||
fail:
|
||
grub_free (found);
|
||
grub_free (data);
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
/* Open a file named NAME and initialize FILE. */
|
||
static grub_err_t
|
||
grub_hfs_open (struct grub_file *file, const char *name)
|
||
{
|
||
struct grub_hfs_data *data;
|
||
grub_fshelp_node_t found = NULL;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
data = grub_hfs_mount (file->device->disk);
|
||
|
||
if (!data)
|
||
{
|
||
grub_dl_unref (my_mod);
|
||
return grub_errno;
|
||
}
|
||
|
||
if (grub_hfs_find_dir (data, name, &found, GRUB_FSHELP_REG))
|
||
{
|
||
grub_free (data);
|
||
grub_dl_unref (my_mod);
|
||
return grub_errno;
|
||
}
|
||
|
||
grub_memcpy (data->extents, found->fdrec.frec.extents, sizeof (grub_hfs_datarecord_t));
|
||
file->size = grub_be_to_cpu32 (found->fdrec.frec.size);
|
||
data->size = grub_be_to_cpu32 (found->fdrec.frec.size);
|
||
data->fileid = grub_be_to_cpu32 (found->fdrec.frec.fileid);
|
||
file->offset = 0;
|
||
|
||
file->data = data;
|
||
|
||
grub_free (found);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static grub_ssize_t
|
||
grub_hfs_read (grub_file_t file, char *buf, grub_size_t len)
|
||
{
|
||
struct grub_hfs_data *data =
|
||
(struct grub_hfs_data *) file->data;
|
||
|
||
return grub_hfs_read_file (data, file->read_hook, file->read_hook_data,
|
||
file->offset, len, buf);
|
||
}
|
||
|
||
|
||
static grub_err_t
|
||
grub_hfs_close (grub_file_t file)
|
||
{
|
||
grub_free (file->data);
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
static grub_err_t
|
||
grub_hfs_label (grub_device_t device, char **label)
|
||
{
|
||
struct grub_hfs_data *data;
|
||
|
||
data = grub_hfs_mount (device->disk);
|
||
|
||
if (data)
|
||
{
|
||
grub_size_t len = data->sblock.volname[0];
|
||
if (len > sizeof (data->sblock.volname) - 1)
|
||
len = sizeof (data->sblock.volname) - 1;
|
||
*label = grub_malloc (len * MAX_UTF8_PER_MAC_ROMAN + 1);
|
||
if (*label)
|
||
macroman_to_utf8 (*label, data->sblock.volname + 1,
|
||
len + 1, 0);
|
||
}
|
||
else
|
||
*label = 0;
|
||
|
||
grub_free (data);
|
||
return grub_errno;
|
||
}
|
||
|
||
static grub_err_t
|
||
grub_hfs_mtime (grub_device_t device, grub_int32_t *tm)
|
||
{
|
||
struct grub_hfs_data *data;
|
||
|
||
data = grub_hfs_mount (device->disk);
|
||
|
||
if (data)
|
||
*tm = grub_be_to_cpu32 (data->sblock.mtime) - 2082844800;
|
||
else
|
||
*tm = 0;
|
||
|
||
grub_free (data);
|
||
return grub_errno;
|
||
}
|
||
|
||
static grub_err_t
|
||
grub_hfs_uuid (grub_device_t device, char **uuid)
|
||
{
|
||
struct grub_hfs_data *data;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
data = grub_hfs_mount (device->disk);
|
||
if (data && data->sblock.num_serial != 0)
|
||
{
|
||
*uuid = grub_xasprintf ("%016llx",
|
||
(unsigned long long)
|
||
grub_be_to_cpu64 (data->sblock.num_serial));
|
||
}
|
||
else
|
||
*uuid = NULL;
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
grub_free (data);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
|
||
static struct grub_fs grub_hfs_fs =
|
||
{
|
||
.name = "hfs",
|
||
.dir = grub_hfs_dir,
|
||
.open = grub_hfs_open,
|
||
.read = grub_hfs_read,
|
||
.close = grub_hfs_close,
|
||
.label = grub_hfs_label,
|
||
.uuid = grub_hfs_uuid,
|
||
.mtime = grub_hfs_mtime,
|
||
#ifdef GRUB_UTIL
|
||
.reserved_first_sector = 1,
|
||
.blocklist_install = 1,
|
||
#endif
|
||
.next = 0
|
||
};
|
||
|
||
GRUB_MOD_INIT(hfs)
|
||
{
|
||
grub_fs_register (&grub_hfs_fs);
|
||
my_mod = mod;
|
||
}
|
||
|
||
GRUB_MOD_FINI(hfs)
|
||
{
|
||
grub_fs_unregister (&grub_hfs_fs);
|
||
}
|