mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-16 00:15:08 +01:00
0f17471b27
*Added sources of the custom libs to the branches *Fixed crash when switching from list layout to grid/carousel layout *Removed 1:1 copy option because its meaningless and almost the same as installing all partitions *Fixed install partition selection. This option needs a reset. Go to settings and reselect your option for this. *Fixed schinese and tchinese language modes (filename bugs. has to be schinese.lang and tchinese.lang like on SVN) *Fixed bug in sound buffer circle *Fixed incorrect behaviour of x-flip when selecting system like (thx Cyan for the patch) *Accept ios revision 65535 for Waninkokos IOSes (thx to PPSainity for pointing it out) *Merged the new theming style branch into trunk. Just as a reminder: ALL old themes will not work until the themers did port it to the new style! *Removed old theme style completely Theme example: The example file of the theme is the Default.them file. It can be found in the SVN trunk. Change in loading of themes: When selecting a theme now a list of all .them files in a folder is displayed. The image folder of that theme has to be in the same folder as the .them file. The image path is defined in the head of the .them file in the line with "Image-Folder: Example\n".
409 lines
8.0 KiB
C
409 lines
8.0 KiB
C
/*
|
|
* image.c --- writes out the critical parts of the filesystem as a
|
|
* flat file.
|
|
*
|
|
* Copyright (C) 2000 Theodore Ts'o.
|
|
*
|
|
* Note: this uses the POSIX IO interfaces, unlike most of the other
|
|
* functions in this library. So sue me.
|
|
*
|
|
* %Begin-Header%
|
|
* This file may be redistributed under the terms of the GNU Library
|
|
* General Public License, version 2.
|
|
* %End-Header%
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#if HAVE_ERRNO_H
|
|
#include <errno.h>
|
|
#endif
|
|
#include <fcntl.h>
|
|
#include <time.h>
|
|
#if HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
#if HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#include "ext2_fs.h"
|
|
#include "ext2fs.h"
|
|
|
|
#ifndef HAVE_TYPE_SSIZE_T
|
|
typedef int ssize_t;
|
|
#endif
|
|
|
|
/*
|
|
* This function returns 1 if the specified block is all zeros
|
|
*/
|
|
static int check_zero_block(char *buf, int blocksize)
|
|
{
|
|
char *cp = buf;
|
|
int left = blocksize;
|
|
|
|
while (left > 0) {
|
|
if (*cp++)
|
|
return 0;
|
|
left--;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Write the inode table out as a single block.
|
|
*/
|
|
#define BUF_BLOCKS 32
|
|
|
|
errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags)
|
|
{
|
|
unsigned int group, left, c, d;
|
|
char *buf, *cp;
|
|
blk64_t blk;
|
|
ssize_t actual;
|
|
errcode_t retval;
|
|
|
|
buf = malloc(fs->blocksize * BUF_BLOCKS);
|
|
if (!buf)
|
|
return ENOMEM;
|
|
|
|
for (group = 0; group < fs->group_desc_count; group++) {
|
|
blk = ext2fs_inode_table_loc(fs, (unsigned)group);
|
|
if (!blk) {
|
|
retval = EXT2_ET_MISSING_INODE_TABLE;
|
|
goto errout;
|
|
}
|
|
left = fs->inode_blocks_per_group;
|
|
while (left) {
|
|
c = BUF_BLOCKS;
|
|
if (c > left)
|
|
c = left;
|
|
retval = io_channel_read_blk64(fs->io, blk, c, buf);
|
|
if (retval)
|
|
goto errout;
|
|
cp = buf;
|
|
while (c) {
|
|
if (!(flags & IMAGER_FLAG_SPARSEWRITE)) {
|
|
d = c;
|
|
goto skip_sparse;
|
|
}
|
|
/* Skip zero blocks */
|
|
if (check_zero_block(cp, fs->blocksize)) {
|
|
c--;
|
|
blk++;
|
|
left--;
|
|
cp += fs->blocksize;
|
|
lseek(fd, fs->blocksize, SEEK_CUR);
|
|
continue;
|
|
}
|
|
/* Find non-zero blocks */
|
|
for (d=1; d < c; d++) {
|
|
if (check_zero_block(cp + d*fs->blocksize, fs->blocksize))
|
|
break;
|
|
}
|
|
skip_sparse:
|
|
actual = write(fd, cp, fs->blocksize * d);
|
|
if (actual == -1) {
|
|
retval = errno;
|
|
goto errout;
|
|
}
|
|
if (actual != (ssize_t) (fs->blocksize * d)) {
|
|
retval = EXT2_ET_SHORT_WRITE;
|
|
goto errout;
|
|
}
|
|
blk += d;
|
|
left -= d;
|
|
cp += fs->blocksize * d;
|
|
c -= d;
|
|
}
|
|
}
|
|
}
|
|
retval = 0;
|
|
|
|
errout:
|
|
free(buf);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Read in the inode table and stuff it into place
|
|
*/
|
|
errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd,
|
|
int flags EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int group, c, left;
|
|
char *buf;
|
|
blk64_t blk;
|
|
ssize_t actual;
|
|
errcode_t retval;
|
|
|
|
buf = malloc(fs->blocksize * BUF_BLOCKS);
|
|
if (!buf)
|
|
return ENOMEM;
|
|
|
|
for (group = 0; group < fs->group_desc_count; group++) {
|
|
blk = ext2fs_inode_table_loc(fs, (unsigned)group);
|
|
if (!blk) {
|
|
retval = EXT2_ET_MISSING_INODE_TABLE;
|
|
goto errout;
|
|
}
|
|
left = fs->inode_blocks_per_group;
|
|
while (left) {
|
|
c = BUF_BLOCKS;
|
|
if (c > left)
|
|
c = left;
|
|
actual = read(fd, buf, fs->blocksize * c);
|
|
if (actual == -1) {
|
|
retval = errno;
|
|
goto errout;
|
|
}
|
|
if (actual != (ssize_t) (fs->blocksize * c)) {
|
|
retval = EXT2_ET_SHORT_READ;
|
|
goto errout;
|
|
}
|
|
retval = io_channel_write_blk64(fs->io, blk, c, buf);
|
|
if (retval)
|
|
goto errout;
|
|
|
|
blk += c;
|
|
left -= c;
|
|
}
|
|
}
|
|
retval = ext2fs_flush_icache(fs);
|
|
|
|
errout:
|
|
free(buf);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Write out superblock and group descriptors
|
|
*/
|
|
errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd,
|
|
int flags EXT2FS_ATTR((unused)))
|
|
{
|
|
char *buf, *cp;
|
|
ssize_t actual;
|
|
errcode_t retval;
|
|
|
|
buf = malloc(fs->blocksize);
|
|
if (!buf)
|
|
return ENOMEM;
|
|
|
|
/*
|
|
* Write out the superblock
|
|
*/
|
|
memset(buf, 0, fs->blocksize);
|
|
memcpy(buf, fs->super, SUPERBLOCK_SIZE);
|
|
actual = write(fd, buf, fs->blocksize);
|
|
if (actual == -1) {
|
|
retval = errno;
|
|
goto errout;
|
|
}
|
|
if (actual != (ssize_t) fs->blocksize) {
|
|
retval = EXT2_ET_SHORT_WRITE;
|
|
goto errout;
|
|
}
|
|
|
|
/*
|
|
* Now write out the block group descriptors
|
|
*/
|
|
cp = (char *) fs->group_desc;
|
|
actual = write(fd, cp, fs->blocksize * fs->desc_blocks);
|
|
if (actual == -1) {
|
|
retval = errno;
|
|
goto errout;
|
|
}
|
|
if (actual != (ssize_t) (fs->blocksize * fs->desc_blocks)) {
|
|
retval = EXT2_ET_SHORT_WRITE;
|
|
goto errout;
|
|
}
|
|
|
|
retval = 0;
|
|
|
|
errout:
|
|
free(buf);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Read the superblock and group descriptors and overwrite them.
|
|
*/
|
|
errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd,
|
|
int flags EXT2FS_ATTR((unused)))
|
|
{
|
|
char *buf;
|
|
ssize_t actual, size;
|
|
errcode_t retval;
|
|
|
|
size = fs->blocksize * (fs->group_desc_count + 1);
|
|
buf = malloc(size);
|
|
if (!buf)
|
|
return ENOMEM;
|
|
|
|
/*
|
|
* Read it all in.
|
|
*/
|
|
actual = read(fd, buf, size);
|
|
if (actual == -1) {
|
|
retval = errno;
|
|
goto errout;
|
|
}
|
|
if (actual != size) {
|
|
retval = EXT2_ET_SHORT_READ;
|
|
goto errout;
|
|
}
|
|
|
|
/*
|
|
* Now copy in the superblock and group descriptors
|
|
*/
|
|
memcpy(fs->super, buf, SUPERBLOCK_SIZE);
|
|
|
|
memcpy(fs->group_desc, buf + fs->blocksize,
|
|
fs->blocksize * fs->group_desc_count);
|
|
|
|
retval = 0;
|
|
|
|
errout:
|
|
free(buf);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Write the block/inode bitmaps.
|
|
*/
|
|
errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags)
|
|
{
|
|
ext2fs_generic_bitmap bmap;
|
|
errcode_t err, retval;
|
|
ssize_t actual;
|
|
__u32 itr, cnt, size;
|
|
int c, total_size;
|
|
char buf[1024];
|
|
|
|
if (flags & IMAGER_FLAG_INODEMAP) {
|
|
if (!fs->inode_map) {
|
|
retval = ext2fs_read_inode_bitmap(fs);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
bmap = fs->inode_map;
|
|
err = EXT2_ET_MAGIC_INODE_BITMAP;
|
|
itr = 1;
|
|
cnt = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
|
|
size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
|
|
} else {
|
|
if (!fs->block_map) {
|
|
retval = ext2fs_read_block_bitmap(fs);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
bmap = fs->block_map;
|
|
err = EXT2_ET_MAGIC_BLOCK_BITMAP;
|
|
itr = fs->super->s_first_data_block;
|
|
cnt = EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count;
|
|
size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
|
|
}
|
|
total_size = size * fs->group_desc_count;
|
|
|
|
while (cnt > 0) {
|
|
size = sizeof(buf);
|
|
if (size > (cnt >> 3))
|
|
size = (cnt >> 3);
|
|
|
|
retval = ext2fs_get_generic_bmap_range(bmap, itr,
|
|
size << 3, buf);
|
|
if (retval)
|
|
return retval;
|
|
|
|
actual = write(fd, buf, size);
|
|
if (actual == -1)
|
|
return errno;
|
|
if (actual != (int) size)
|
|
return EXT2_ET_SHORT_READ;
|
|
|
|
itr += size << 3;
|
|
cnt -= size << 3;
|
|
}
|
|
|
|
size = total_size % fs->blocksize;
|
|
memset(buf, 0, sizeof(buf));
|
|
if (size) {
|
|
size = fs->blocksize - size;
|
|
while (size) {
|
|
c = size;
|
|
if (c > (int) sizeof(buf))
|
|
c = sizeof(buf);
|
|
actual = write(fd, buf, c);
|
|
if (actual == -1)
|
|
return errno;
|
|
if (actual != c)
|
|
return EXT2_ET_SHORT_WRITE;
|
|
size -= c;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Read the block/inode bitmaps.
|
|
*/
|
|
errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags)
|
|
{
|
|
ext2fs_generic_bitmap bmap;
|
|
errcode_t err, retval;
|
|
__u32 itr, cnt;
|
|
char buf[1024];
|
|
unsigned int size;
|
|
ssize_t actual;
|
|
|
|
if (flags & IMAGER_FLAG_INODEMAP) {
|
|
if (!fs->inode_map) {
|
|
retval = ext2fs_read_inode_bitmap(fs);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
bmap = fs->inode_map;
|
|
err = EXT2_ET_MAGIC_INODE_BITMAP;
|
|
itr = 1;
|
|
cnt = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
|
|
size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
|
|
} else {
|
|
if (!fs->block_map) {
|
|
retval = ext2fs_read_block_bitmap(fs);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
bmap = fs->block_map;
|
|
err = EXT2_ET_MAGIC_BLOCK_BITMAP;
|
|
itr = fs->super->s_first_data_block;
|
|
cnt = EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count;
|
|
size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
|
|
}
|
|
|
|
while (cnt > 0) {
|
|
size = sizeof(buf);
|
|
if (size > (cnt >> 3))
|
|
size = (cnt >> 3);
|
|
|
|
actual = read(fd, buf, size);
|
|
if (actual == -1)
|
|
return errno;
|
|
if (actual != (int) size)
|
|
return EXT2_ET_SHORT_READ;
|
|
|
|
retval = ext2fs_set_generic_bmap_range(bmap, itr,
|
|
size << 3, buf);
|
|
if (retval)
|
|
return retval;
|
|
|
|
itr += size << 3;
|
|
cnt -= size << 3;
|
|
}
|
|
return 0;
|
|
}
|