-This patch adds LZMA support to the squashfs code, you should also
-change mksquashfs appropriately.
-
-Oleg I. Vdovikin <oleg@cs.msu.su>
-
---- linuz/fs/squashfs/inode.c 2004-12-15 22:56:47.000000000 +0300
-+++ linux/fs/squashfs/inode.c 2005-01-20 20:27:27.490010968 +0300
-@@ -3,6 +3,9 @@
- *
- * Copyright (c) 2002, 2003, 2004 Phillip Lougher <plougher@users.sourceforge.net>
+Index: linux-2.4.35.4/fs/squashfs/inode.c
+===================================================================
+--- linux-2.4.35.4.orig/fs/squashfs/inode.c
++++ linux-2.4.35.4/fs/squashfs/inode.c
+@@ -4,6 +4,9 @@
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.org.uk>
*
+ * LZMA decompressor support added by Oleg I. Vdovikin
+ * Copyright (c) 2005 Oleg I.Vdovikin <oleg@cs.msu.su>
* 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,
-@@ -21,7 +24,11 @@
+@@ -21,6 +24,7 @@
* inode.c
*/
+#define SQUASHFS_LZMA
-+
-+#ifndef SQUASHFS_LZMA
- #define SQUASHFS_1_0_COMPATIBILITY
-+#endif
-
#include <linux/types.h>
#include <linux/squashfs_fs.h>
-@@ -39,6 +46,19 @@
- #include <linux/blkdev.h>
- #include <linux/vmalloc.h>
+ #include <linux/module.h>
+@@ -40,6 +44,20 @@
+
+ #include "squashfs.h"
+#ifdef SQUASHFS_LZMA
+#include "LzmaDecode.h"
+#define LZMA_PB 2
+
+#define LZMA_WORKSPACE_SIZE ((LZMA_BASE_SIZE + \
-+ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb))
++ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb))
+
+#endif
+
- #ifdef SQUASHFS_TRACE
- #define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args)
- #else
-@@ -77,7 +97,11 @@
-
- DECLARE_MUTEX(read_data_mutex);
++
+ static struct super_block *squashfs_read_super(struct super_block *, void *, int);
+ static void squashfs_put_super(struct super_block *);
+ static int squashfs_statfs(struct super_block *, struct statfs *);
+@@ -53,7 +71,11 @@ static long long read_blocklist(struct i
+ int readahead_blks, char *block_list,
+ unsigned short **block_p, unsigned int *bsize);
+#ifdef SQUASHFS_LZMA
+static unsigned char lzma_workspace[LZMA_WORKSPACE_SIZE];
static DECLARE_FSTYPE_DEV(squashfs_fs_type, "squashfs", squashfs_read_super);
-@@ -232,6 +256,15 @@
- if(compressed) {
+@@ -229,6 +251,15 @@ SQSH_EXTERN unsigned int squashfs_read_d
+ if (compressed) {
int zlib_err;
+#ifdef SQUASHFS_LZMA
+ if ((zlib_err = LzmaDecode(lzma_workspace,
+ LZMA_WORKSPACE_SIZE, LZMA_LC, LZMA_LP, LZMA_PB,
-+ c_buffer, c_byte, buffer, msBlk->read_size, &bytes)) != LZMA_RESULT_OK)
++ c_buffer, c_byte, buffer, msblk->read_size, &bytes)) != LZMA_RESULT_OK)
+ {
+ ERROR("lzma returned unexpected result 0x%x\n", zlib_err);
+ bytes = 0;
stream.next_in = c_buffer;
stream.avail_in = c_byte;
stream.next_out = buffer;
-@@ -243,6 +276,7 @@
+@@ -243,6 +274,7 @@ SQSH_EXTERN unsigned int squashfs_read_d
bytes = 0;
} else
bytes = stream.total_out;
+#endif
- up(&read_data_mutex);
+
+ up(&msblk->read_data_mutex);
}
-
-@@ -1491,17 +1525,21 @@
- static int __init init_squashfs_fs(void)
- {
+@@ -2004,17 +2036,21 @@ static int __init init_squashfs_fs(void)
+ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) "
+ "Phillip Lougher\n");
+#ifndef SQUASHFS_LZMA
- if(!(stream.workspace = (char *) vmalloc(zlib_inflate_workspacesize()))) {
+ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
ERROR("Failed to allocate zlib workspace\n");
return -ENOMEM;
}
unregister_filesystem(&squashfs_fs_type);
}
---- linuz/fs/squashfs/LzmaDecode.c 1970-01-01 03:00:00.000000000 +0300
-+++ linux/fs/squashfs/LzmaDecode.c 2005-01-20 19:40:35.400513552 +0300
+Index: linux-2.4.35.4/fs/squashfs/LzmaDecode.c
+===================================================================
+--- /dev/null
++++ linux-2.4.35.4/fs/squashfs/LzmaDecode.c
@@ -0,0 +1,663 @@
+/*
+ LzmaDecode.c
+ *outSizeProcessed = nowPos;
+ return LZMA_RESULT_OK;
+}
---- linuz/fs/squashfs/LzmaDecode.h 1970-01-01 03:00:00.000000000 +0300
-+++ linux/fs/squashfs/LzmaDecode.h 2005-01-20 19:40:36.794301664 +0300
+Index: linux-2.4.35.4/fs/squashfs/LzmaDecode.h
+===================================================================
+--- /dev/null
++++ linux-2.4.35.4/fs/squashfs/LzmaDecode.h
@@ -0,0 +1,100 @@
+/*
+ LzmaDecode.h
+ UInt32 *outSizeProcessed);
+
+#endif
---- linuz/fs/squashfs/Makefile 2004-12-15 22:56:47.000000000 +0300
-+++ linux/fs/squashfs/Makefile 2005-01-19 23:04:25.000000000 +0300
+Index: linux-2.4.35.4/fs/squashfs/Makefile
+===================================================================
+--- linux-2.4.35.4.orig/fs/squashfs/Makefile
++++ linux-2.4.35.4/fs/squashfs/Makefile
@@ -4,7 +4,7 @@
O_TARGET := squashfs.o
--obj-y := inode.o
-+obj-y := inode.o LzmaDecode.o
+-obj-y := inode.o squashfs2_0.o
++obj-y := inode.o squashfs2_0.o LzmaDecode.o
obj-m := $(O_TARGET)
projects / openwrt.git / blobdiff