mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
250 lines
7.0 KiB
Diff
250 lines
7.0 KiB
Diff
--- a/fs/squashfs/decompressor.c
|
|
+++ b/fs/squashfs/decompressor.c
|
|
@@ -40,11 +40,9 @@ static const struct squashfs_decompresso
|
|
NULL, NULL, NULL, LZMA_COMPRESSION, "lzma", 0
|
|
};
|
|
|
|
-#ifndef CONFIG_SQUASHFS_LZO
|
|
static const struct squashfs_decompressor squashfs_lzo_unsupported_comp_ops = {
|
|
NULL, NULL, NULL, LZO_COMPRESSION, "lzo", 0
|
|
};
|
|
-#endif
|
|
|
|
static const struct squashfs_decompressor squashfs_unknown_comp_ops = {
|
|
NULL, NULL, NULL, 0, "unknown", 0
|
|
@@ -53,11 +51,7 @@ static const struct squashfs_decompresso
|
|
static const struct squashfs_decompressor *decompressor[] = {
|
|
&squashfs_zlib_comp_ops,
|
|
&squashfs_lzma_unsupported_comp_ops,
|
|
-#ifdef CONFIG_SQUASHFS_LZO
|
|
- &squashfs_lzo_comp_ops,
|
|
-#else
|
|
&squashfs_lzo_unsupported_comp_ops,
|
|
-#endif
|
|
&squashfs_unknown_comp_ops
|
|
};
|
|
|
|
--- a/fs/squashfs/Kconfig
|
|
+++ b/fs/squashfs/Kconfig
|
|
@@ -5,13 +5,13 @@ config SQUASHFS
|
|
help
|
|
Saying Y here includes support for SquashFS 4.0 (a Compressed
|
|
Read-Only File System). Squashfs is a highly compressed read-only
|
|
- filesystem for Linux. It uses zlib/lzo compression to compress both
|
|
+ filesystem for Linux. It uses zlib compression to compress both
|
|
files, inodes and directories. Inodes in the system are very small
|
|
and all blocks are packed to minimise data overhead. Block sizes
|
|
greater than 4K are supported up to a maximum of 1 Mbytes (default
|
|
block size 128K). SquashFS 4.0 supports 64 bit filesystems and files
|
|
(larger than 4GB), full uid/gid information, hard links and
|
|
- timestamps.
|
|
+ timestamps.
|
|
|
|
Squashfs is intended for general read-only filesystem use, for
|
|
archival use (i.e. in cases where a .tar.gz file may be used), and in
|
|
@@ -26,7 +26,7 @@ config SQUASHFS
|
|
|
|
If unsure, say N.
|
|
|
|
-config SQUASHFS_XATTR
|
|
+config SQUASHFS_XATTRS
|
|
bool "Squashfs XATTR support"
|
|
depends on SQUASHFS
|
|
default n
|
|
@@ -37,24 +37,9 @@ config SQUASHFS_XATTR
|
|
|
|
If unsure, say N.
|
|
|
|
-config SQUASHFS_LZO
|
|
- bool "Include support for LZO compressed file systems"
|
|
- depends on SQUASHFS
|
|
- default n
|
|
- select LZO_DECOMPRESS
|
|
- help
|
|
- Saying Y here includes support for reading Squashfs file systems
|
|
- compressed with LZO compresssion. LZO compression is mainly
|
|
- aimed at embedded systems with slower CPUs where the overheads
|
|
- of zlib are too high.
|
|
-
|
|
- LZO is not the standard compression used in Squashfs and so most
|
|
- file systems will be readable without selecting this option.
|
|
-
|
|
- If unsure, say N.
|
|
-
|
|
config SQUASHFS_EMBEDDED
|
|
- bool "Additional option for memory-constrained systems"
|
|
+
|
|
+ bool "Additional option for memory-constrained systems"
|
|
depends on SQUASHFS
|
|
default n
|
|
help
|
|
--- a/fs/squashfs/lzo_wrapper.c
|
|
+++ /dev/null
|
|
@@ -1,136 +0,0 @@
|
|
-/*
|
|
- * Squashfs - a compressed read only filesystem for Linux
|
|
- *
|
|
- * Copyright (c) 2010 LG Electronics
|
|
- * Chan Jeong <chan.jeong@lge.com>
|
|
- *
|
|
- * 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,
|
|
- * 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, write to the Free Software
|
|
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
- *
|
|
- * lzo_wrapper.c
|
|
- */
|
|
-
|
|
-#include <linux/mutex.h>
|
|
-#include <linux/buffer_head.h>
|
|
-#include <linux/slab.h>
|
|
-#include <linux/vmalloc.h>
|
|
-#include <linux/lzo.h>
|
|
-
|
|
-#include "squashfs_fs.h"
|
|
-#include "squashfs_fs_sb.h"
|
|
-#include "squashfs_fs_i.h"
|
|
-#include "squashfs.h"
|
|
-#include "decompressor.h"
|
|
-
|
|
-struct squashfs_lzo {
|
|
- void *input;
|
|
- void *output;
|
|
-};
|
|
-
|
|
-static void *lzo_init(struct squashfs_sb_info *msblk)
|
|
-{
|
|
- int block_size = max_t(int, msblk->block_size, SQUASHFS_METADATA_SIZE);
|
|
-
|
|
- struct squashfs_lzo *stream = kzalloc(sizeof(*stream), GFP_KERNEL);
|
|
- if (stream == NULL)
|
|
- goto failed;
|
|
- stream->input = vmalloc(block_size);
|
|
- if (stream->input == NULL)
|
|
- goto failed;
|
|
- stream->output = vmalloc(block_size);
|
|
- if (stream->output == NULL)
|
|
- goto failed2;
|
|
-
|
|
- return stream;
|
|
-
|
|
-failed2:
|
|
- vfree(stream->input);
|
|
-failed:
|
|
- ERROR("Failed to allocate lzo workspace\n");
|
|
- kfree(stream);
|
|
- return NULL;
|
|
-}
|
|
-
|
|
-
|
|
-static void lzo_free(void *strm)
|
|
-{
|
|
- struct squashfs_lzo *stream = strm;
|
|
-
|
|
- if (stream) {
|
|
- vfree(stream->input);
|
|
- vfree(stream->output);
|
|
- }
|
|
- kfree(stream);
|
|
-}
|
|
-
|
|
-
|
|
-static int lzo_uncompress(struct squashfs_sb_info *msblk, void **buffer,
|
|
- struct buffer_head **bh, int b, int offset, int length, int srclength,
|
|
- int pages)
|
|
-{
|
|
- struct squashfs_lzo *stream = msblk->stream;
|
|
- void *buff = stream->input;
|
|
- int avail, i, bytes = length, res;
|
|
- size_t out_len = srclength;
|
|
-
|
|
- mutex_lock(&msblk->read_data_mutex);
|
|
-
|
|
- for (i = 0; i < b; i++) {
|
|
- wait_on_buffer(bh[i]);
|
|
- if (!buffer_uptodate(bh[i]))
|
|
- goto block_release;
|
|
-
|
|
- avail = min(bytes, msblk->devblksize - offset);
|
|
- memcpy(buff, bh[i]->b_data + offset, avail);
|
|
- buff += avail;
|
|
- bytes -= avail;
|
|
- offset = 0;
|
|
- put_bh(bh[i]);
|
|
- }
|
|
-
|
|
- res = lzo1x_decompress_safe(stream->input, (size_t)length,
|
|
- stream->output, &out_len);
|
|
- if (res != LZO_E_OK)
|
|
- goto failed;
|
|
-
|
|
- res = bytes = (int)out_len;
|
|
- for (i = 0, buff = stream->output; bytes && i < pages; i++) {
|
|
- avail = min_t(int, bytes, PAGE_CACHE_SIZE);
|
|
- memcpy(buffer[i], buff, avail);
|
|
- buff += avail;
|
|
- bytes -= avail;
|
|
- }
|
|
-
|
|
- mutex_unlock(&msblk->read_data_mutex);
|
|
- return res;
|
|
-
|
|
-block_release:
|
|
- for (; i < b; i++)
|
|
- put_bh(bh[i]);
|
|
-
|
|
-failed:
|
|
- mutex_unlock(&msblk->read_data_mutex);
|
|
-
|
|
- ERROR("lzo decompression failed, data probably corrupt\n");
|
|
- return -EIO;
|
|
-}
|
|
-
|
|
-const struct squashfs_decompressor squashfs_lzo_comp_ops = {
|
|
- .init = lzo_init,
|
|
- .free = lzo_free,
|
|
- .decompress = lzo_uncompress,
|
|
- .id = LZO_COMPRESSION,
|
|
- .name = "lzo",
|
|
- .supported = 1
|
|
-};
|
|
--- a/fs/squashfs/Makefile
|
|
+++ b/fs/squashfs/Makefile
|
|
@@ -5,5 +5,5 @@
|
|
obj-$(CONFIG_SQUASHFS) += squashfs.o
|
|
squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o
|
|
squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o
|
|
-squashfs-$(CONFIG_SQUASHFS_XATTR) += xattr.o xattr_id.o
|
|
-squashfs-$(CONFIG_SQUASHFS_LZO) += lzo_wrapper.o
|
|
+squashfs-$(CONFIG_SQUASHFS_XATTRS) += xattr.o xattr_id.o
|
|
+
|
|
--- a/fs/squashfs/squashfs.h
|
|
+++ b/fs/squashfs/squashfs.h
|
|
@@ -104,6 +104,3 @@ extern const struct xattr_handler *squas
|
|
|
|
/* zlib_wrapper.c */
|
|
extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
|
|
-
|
|
-/* lzo_wrapper.c */
|
|
-extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
|
|
--- a/fs/squashfs/xattr.h
|
|
+++ b/fs/squashfs/xattr.h
|
|
@@ -21,7 +21,7 @@
|
|
* xattr.h
|
|
*/
|
|
|
|
-#ifdef CONFIG_SQUASHFS_XATTR
|
|
+#ifdef CONFIG_SQUASHFS_XATTRS
|
|
extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
|
|
u64 *, int *);
|
|
extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
|