add squashfs 2.2 for kernel 2.6, cleanup broadcom patch, remove .orig files

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@1777 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 2592 insertions, 0 deletions

diff --git a/openwrt/target/linux/linux-2.6/patches/generic/001-squashfs.patch b/openwrt/target/linux/linux-2.6/patches/generic/001-squashfs.patch
new file mode 100644
index 0000000000..f51beaac66
--- /dev/null
+++ b/openwrt/target/linux/linux-2.6/patches/generic/001-squashfs.patch
@@ -0,0 +1,2592 @@
+diff --new-file -urp linux-2.6.12/fs/Kconfig linux-2.6.12-squashfs2.2/fs/Kconfig
+--- linux-2.6.12/fs/Kconfig	2005-06-17 20:48:29.000000000 +0100
++++ linux-2.6.12-squashfs2.2/fs/Kconfig	2005-07-04 02:35:35.000000000 +0100
+@@ -1171,6 +1171,69 @@ config CRAMFS
+ 
+ 	  If unsure, say N.
+ 
++config SQUASHFS
++	tristate "SquashFS 2.0 - Squashed file system support"
++	select ZLIB_INFLATE
++	help
++	  Saying Y here includes support for SquashFs 2.0 (Compressed Read-Only File
++	  System).  Squashfs is a highly compressed read-only 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 64K.
++
++	  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 embedded
++	  systems where low overhead is needed.  Further information and filesystem tools
++	  are available from http://squashfs.sourceforge.net.
++
++	  If you want to compile this as a module ( = code which can be
++	  inserted in and removed from the running kernel whenever you want),
++	  say M here and read <file:Documentation/modules.txt>.  The module
++	  will be called squashfs.  Note that the root file system (the one
++	  containing the directory /) cannot be compiled as a module.
++
++	  If unsure, say N.
++
++config SQUASHFS_EMBEDDED
++
++	bool "Additional options for memory-constrained systems" 
++	depends on SQUASHFS
++	default n
++	help
++	  Saying Y here allows you to specify cache sizes and how Squashfs
++	  allocates memory.  This is only intended for memory constrained
++	  systems.
++
++	  If unsure, say N.
++
++config SQUASHFS_FRAGMENT_CACHE_SIZE
++	int "Number of fragments cached" if SQUASHFS_EMBEDDED
++	depends on SQUASHFS
++	default "3"
++	help
++	  By default SquashFS caches the last 3 fragments read from
++	  the filesystem.  Increasing this amount may mean SquashFS
++	  has to re-read fragments less often from disk, at the expense
++	  of extra system memory.  Decreasing this amount will mean
++	  SquashFS uses less memory at the expense of extra reads from disk.
++
++	  Note there must be at least one cached fragment.  Anything
++	  much more than three will probably not make much difference.
++
++config SQUASHFS_VMALLOC
++	bool "Use Vmalloc rather than Kmalloc" if SQUASHFS_EMBEDDED
++	depends on SQUASHFS
++	default n
++	help
++	  By default SquashFS uses kmalloc to obtain fragment cache memory.
++	  Kmalloc memory is the standard kernel allocator, but it can fail
++	  on memory constrained systems.  Because of the way Vmalloc works,
++	  Vmalloc can succeed when kmalloc fails.  Specifying this option
++	  will make SquashFS always use Vmalloc to allocate the
++	  fragment cache memory.
++
++	  If unsure, say N.
++
+ config VXFS_FS
+ 	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
+ 	help
+diff --new-file -urp linux-2.6.12/fs/Makefile linux-2.6.12-squashfs2.2/fs/Makefile
+--- linux-2.6.12/fs/Makefile	2005-06-17 20:48:29.000000000 +0100
++++ linux-2.6.12-squashfs2.2/fs/Makefile	2005-07-04 02:35:35.000000000 +0100
+@@ -52,6 +52,7 @@ obj-$(CONFIG_EXT3_FS)		+= ext3/ # Before
+ obj-$(CONFIG_JBD)		+= jbd/
+ obj-$(CONFIG_EXT2_FS)		+= ext2/
+ obj-$(CONFIG_CRAMFS)		+= cramfs/
++obj-$(CONFIG_SQUASHFS)		+= squashfs/
+ obj-$(CONFIG_RAMFS)		+= ramfs/
+ obj-$(CONFIG_HUGETLBFS)		+= hugetlbfs/
+ obj-$(CONFIG_CODA_FS)		+= coda/
+diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/fs/squashfs/inode.c
+--- linux-2.6.12/fs/squashfs/inode.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.12-squashfs2.2/fs/squashfs/inode.c	2005-07-04 02:35:35.000000000 +0100
+@@ -0,0 +1,1803 @@
++/*
++ * Squashfs - a compressed read only filesystem for Linux
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
++ *
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * inode.c
++ */
++
++#define SQUASHFS_1_0_COMPATIBILITY
++
++#include <linux/types.h>
++#include <linux/squashfs_fs.h>
++#include <linux/module.h>
++#include <linux/errno.h>
++#include <linux/slab.h>
++#include <linux/fs.h>
++#include <linux/smp_lock.h>
++#include <linux/slab.h>
++#include <linux/squashfs_fs_sb.h>
++#include <linux/squashfs_fs_i.h>
++#include <linux/buffer_head.h>
++#include <linux/vfs.h>
++#include <linux/init.h>
++#include <linux/dcache.h>
++#include <asm/uaccess.h>
++#include <linux/wait.h>
++#include <asm/semaphore.h>
++#include <linux/zlib.h>
++#include <linux/blkdev.h>
++#include <linux/vmalloc.h>
++
++#ifdef SQUASHFS_TRACE
++#define TRACE(s, args...)				printk(KERN_NOTICE "SQUASHFS: "s, ## args)
++#else
++#define TRACE(s, args...)				{}
++#endif
++
++#define ERROR(s, args...)				printk(KERN_ERR "SQUASHFS error: "s, ## args)
++
++#define SERROR(s, args...)				if(!silent) printk(KERN_ERR "SQUASHFS error: "s, ## args)
++#define WARNING(s, args...)				printk(KERN_WARNING "SQUASHFS: "s, ## args)
++
++static void squashfs_put_super(struct super_block *);
++static int squashfs_statfs(struct super_block *, struct kstatfs *);
++static int squashfs_symlink_readpage(struct file *file, struct page *page);
++static int squashfs_readpage(struct file *file, struct page *page);
++static int squashfs_readpage4K(struct file *file, struct page *page);
++static int squashfs_readdir(struct file *, void *, filldir_t);
++static struct dentry *squashfs_lookup(struct inode *, struct dentry *, struct nameidata *);
++static unsigned int read_data(struct super_block *s, char *buffer,
++		unsigned int index, unsigned int length, unsigned int *next_index);
++static int squashfs_get_cached_block(struct super_block *s, char *buffer,
++		unsigned int block, unsigned int offset, int length,
++		unsigned int *next_block, unsigned int *next_offset);
++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode);
++static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks,
++		char *block_list, unsigned short **block_p, unsigned int *bsize);
++static void squashfs_put_super(struct super_block *s);
++static struct super_block *squashfs_get_sb(struct file_system_type *, int, const char *, void *);
++static struct inode *squashfs_alloc_inode(struct super_block *sb);
++static void squashfs_destroy_inode(struct inode *inode);
++static int init_inodecache(void);
++static void destroy_inodecache(void);
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++static int squashfs_readpage_lessthan4K(struct file *file, struct page *page);
++static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode);
++static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks,
++		char *block_list, unsigned short **block_p, unsigned int *bsize);
++#endif
++
++DECLARE_MUTEX(read_data_mutex);
++
++static z_stream stream;
++
++static struct file_system_type squashfs_fs_type = {
++	.owner = THIS_MODULE,
++	.name = "squashfs",
++	.get_sb = squashfs_get_sb,
++	.kill_sb = kill_block_super,
++	.fs_flags = FS_REQUIRES_DEV
++	};
++
++static unsigned char squashfs_filetype_table[] = {
++	DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK
++};
++
++static struct super_operations squashfs_ops = {
++	.alloc_inode = squashfs_alloc_inode,
++	.destroy_inode = squashfs_destroy_inode,
++	.statfs = squashfs_statfs,
++	.put_super = squashfs_put_super,
++};
++
++static struct address_space_operations squashfs_symlink_aops = {
++	.readpage = squashfs_symlink_readpage
++};
++
++static struct address_space_operations squashfs_aops = {
++	.readpage = squashfs_readpage
++};
++
++static struct address_space_operations squashfs_aops_4K = {
++	.readpage = squashfs_readpage4K
++};
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++static struct address_space_operations squashfs_aops_lessthan4K = {
++	.readpage = squashfs_readpage_lessthan4K
++};
++#endif
++
++static struct file_operations squashfs_dir_ops = {
++	.read = generic_read_dir,
++	.readdir = squashfs_readdir
++};
++
++static struct inode_operations squashfs_dir_inode_ops = {
++	.lookup = squashfs_lookup
++};
++
++
++static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
++{
++	return list_entry(inode, struct squashfs_inode_info, vfs_inode);
++}
++
++
++static struct buffer_head *get_block_length(struct super_block *s,
++				int *cur_index, int *offset, int *c_byte)
++{
++	squashfs_sb_info *msblk = s->s_fs_info;
++	unsigned short temp;
++	struct buffer_head *bh;
++
++	if (!(bh = sb_bread(s, *cur_index)))
++		goto out;
++
++	if (msblk->devblksize - *offset == 1) {
++		if (msblk->swap)
++			((unsigned char *) &temp)[1] = *((unsigned char *)
++				(bh->b_data + *offset));
++		else
++			((unsigned char *) &temp)[0] = *((unsigned char *)
++				(bh->b_data + *offset));
++		brelse(bh);
++		if (!(bh = sb_bread(s, ++(*cur_index))))
++			goto out;
++		if (msblk->swap)
++			((unsigned char *) &temp)[0] = *((unsigned char *)
++				bh->b_data); 
++		else
++			((unsigned char *) &temp)[1] = *((unsigned char *)
++				bh->b_data); 
++		*c_byte = temp;
++		*offset = 1;
++	} else {
++		if (msblk->swap) {
++			((unsigned char *) &temp)[1] = *((unsigned char *)
++				(bh->b_data + *offset));
++			((unsigned char *) &temp)[0] = *((unsigned char *)
++				(bh->b_data + *offset + 1)); 
++		} else {
++			((unsigned char *) &temp)[0] = *((unsigned char *)
++				(bh->b_data + *offset));
++			((unsigned char *) &temp)[1] = *((unsigned char *)
++				(bh->b_data + *offset + 1)); 
++		}
++		*c_byte = temp;
++		*offset += 2;
++	}
++
++	if (SQUASHFS_CHECK_DATA(msblk->sBlk.flags)) {
++		if (*offset == msblk->devblksize) {
++			brelse(bh);
++			if (!(bh = sb_bread(s, ++(*cur_index))))
++				goto out;
++			*offset = 0;
++		}
++		if (*((unsigned char *) (bh->b_data + *offset)) !=
++						SQUASHFS_MARKER_BYTE) {
++			ERROR("Metadata block marker corrupt @ %x\n",
++						*cur_index);
++			brelse(bh);
++			goto out;
++		}
++		(*offset)++;
++	}
++	return bh;
++
++out:
++	return NULL;
++}
++
++
++static unsigned int read_data(struct super_block *s, char *buffer,
++		unsigned int index, unsigned int length, unsigned int *next_index)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> msBlk->devblksize_log2) + 2];
++	unsigned int offset = index & ((1 << msBlk->devblksize_log2) - 1);
++	unsigned int cur_index = index >> msBlk->devblksize_log2;
++	int bytes, avail_bytes, b = 0, k;
++	char *c_buffer;
++	unsigned int compressed;
++	unsigned int c_byte = length;
++
++	if(c_byte) {
++		bytes = msBlk->devblksize - offset;
++		compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte);
++		c_buffer = compressed ? msBlk->read_data : buffer;
++		c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
++
++		TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte);
++
++		if(!(bh[0] = sb_getblk(s, cur_index)))
++			goto block_release;
++		for(b = 1; bytes < c_byte; b++) {
++			if(!(bh[b] = sb_getblk(s, ++cur_index)))
++				goto block_release;
++			bytes += msBlk->devblksize;
++		}
++		ll_rw_block(READ, b, bh);
++	} else {
++		if(!(bh[0] = get_block_length(s, &cur_index, &offset, &c_byte)))
++			goto read_failure;
++
++		bytes = msBlk->devblksize - offset;
++		compressed = SQUASHFS_COMPRESSED(c_byte);
++		c_buffer = compressed ? msBlk->read_data : buffer;
++		c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte);
++
++		TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte);
++
++		for(b = 1; bytes < c_byte; b++) {
++			if(!(bh[b] = sb_getblk(s, ++cur_index)))
++				goto block_release;
++			bytes += msBlk->devblksize;
++		}
++		ll_rw_block(READ, b - 1, bh + 1);
++	}
++
++	if(compressed)
++		down(&read_data_mutex);
++
++	for(bytes = 0, k = 0; k < b; k++) {
++		avail_bytes = (c_byte - bytes) > (msBlk->devblksize - offset) ? msBlk->devblksize - offset : c_byte - bytes;
++		wait_on_buffer(bh[k]);
++		if (!buffer_uptodate(bh[k]))
++			goto block_release;
++		memcpy(c_buffer + bytes, bh[k]->b_data + offset, avail_bytes);
++		bytes += avail_bytes;
++		offset = 0;
++		brelse(bh[k]);
++	}
++
++	/*
++	 * uncompress block
++	 */
++	if(compressed) {
++		int zlib_err;
++
++		stream.next_in = c_buffer;
++		stream.avail_in = c_byte;
++		stream.next_out = buffer;
++		stream.avail_out = msBlk->read_size;
++		if(((zlib_err = zlib_inflateInit(&stream)) != Z_OK) ||
++				((zlib_err = zlib_inflate(&stream, Z_FINISH)) != Z_STREAM_END) ||
++				((zlib_err = zlib_inflateEnd(&stream)) != Z_OK)) {
++			ERROR("zlib_fs returned unexpected result 0x%x\n", zlib_err);
++			bytes = 0;
++		} else
++			bytes = stream.total_out;
++		up(&read_data_mutex);
++	}
++
++	if(next_index)
++		*next_index = index + c_byte + (length ? 0 : (SQUASHFS_CHECK_DATA(msBlk->sBlk.flags) ? 3 : 2));
++
++	return bytes;
++
++block_release:
++	while(--b >= 0) brelse(bh[b]);
++
++read_failure:
++	ERROR("sb_bread failed reading block 0x%x\n", cur_index);
++	return 0;
++}
++
++
++static int squashfs_get_cached_block(struct super_block *s, char *buffer,
++		unsigned int block, unsigned int offset, int length,
++		unsigned int *next_block, unsigned int *next_offset)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	int n, i, bytes, return_length = length;
++	unsigned int next_index;
++
++	TRACE("Entered squashfs_get_cached_block [%x:%x]\n", block, offset);
++
++	for(;;) {
++		for(i = 0; i < SQUASHFS_CACHED_BLKS; i++) 
++			if(msBlk->block_cache[i].block == block)
++				break; 
++		
++		down(&msBlk->block_cache_mutex);
++		if(i == SQUASHFS_CACHED_BLKS) {
++			/* read inode header block */
++			for(i = msBlk->next_cache, n = SQUASHFS_CACHED_BLKS; n ; n --, i = (i + 1) % SQUASHFS_CACHED_BLKS)
++				if(msBlk->block_cache[i].block != SQUASHFS_USED_BLK)
++					break;
++			if(n == 0) {
++				wait_queue_t wait;
++
++				init_waitqueue_entry(&wait, current);
++				add_wait_queue(&msBlk->waitq, &wait);
++ 				up(&msBlk->block_cache_mutex);
++				set_current_state(TASK_UNINTERRUPTIBLE);
++				schedule();
++				set_current_state(TASK_RUNNING);
++				remove_wait_queue(&msBlk->waitq, &wait);
++				continue;
++			}
++			msBlk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS;
++
++			if(msBlk->block_cache[i].block == SQUASHFS_INVALID_BLK) {
++				if(!(msBlk->block_cache[i].data = (unsigned char *)
++							kmalloc(SQUASHFS_METADATA_SIZE, GFP_KERNEL))) {
++					ERROR("Failed to allocate cache block\n");
++					up(&msBlk->block_cache_mutex);
++					return 0;
++				}
++			}
++	
++			msBlk->block_cache[i].block = SQUASHFS_USED_BLK;
++			up(&msBlk->block_cache_mutex);
++			if(!(msBlk->block_cache[i].length = read_data(s, msBlk->block_cache[i].data, block, 0,
++							&next_index))) {
++				ERROR("Unable to read cache block [%x:%x]\n", block, offset);
++				return 0;
++			}
++			down(&msBlk->block_cache_mutex);
++			wake_up(&msBlk->waitq);
++			msBlk->block_cache[i].block = block;
++			msBlk->block_cache[i].next_index = next_index;
++			TRACE("Read cache block [%x:%x]\n", block, offset);
++		}
++
++		if(msBlk->block_cache[i].block != block) {
++			up(&msBlk->block_cache_mutex);
++			continue;
++		}
++
++		if((bytes = msBlk->block_cache[i].length - offset) >= length) {
++			if(buffer)
++				memcpy(buffer, msBlk->block_cache[i].data + offset, length);
++			if(msBlk->block_cache[i].length - offset == length) {
++				*next_block = msBlk->block_cache[i].next_index;
++				*next_offset = 0;
++			} else {
++				*next_block = block;
++				*next_offset = offset + length;
++			}
++	
++			up(&msBlk->block_cache_mutex);
++			return return_length;
++		} else {
++			if(buffer) {
++				memcpy(buffer, msBlk->block_cache[i].data + offset, bytes);
++				buffer += bytes;
++			}
++			block = msBlk->block_cache[i].next_index;
++			up(&msBlk->block_cache_mutex);
++			length -= bytes;
++			offset = 0;
++		}
++	}
++}
++
++
++static int get_fragment_location(struct super_block *s, unsigned int fragment, unsigned int *fragment_start_block, unsigned int *fragment_size)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	unsigned int start_block = msBlk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)];
++	int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment);
++	squashfs_fragment_entry fragment_entry;
++
++	if(msBlk->swap) {
++		squashfs_fragment_entry sfragment_entry;
++
++		if(!squashfs_get_cached_block(s, (char *) &sfragment_entry, start_block, offset,
++					sizeof(sfragment_entry), &start_block, &offset))
++			return 0;
++		SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry);
++	} else
++		if(!squashfs_get_cached_block(s, (char *) &fragment_entry, start_block, offset,
++					sizeof(fragment_entry), &start_block, &offset))
++			return 0;
++
++	*fragment_start_block = fragment_entry.start_block;
++	*fragment_size = fragment_entry.size;
++
++	return 1;
++}
++
++
++void release_cached_fragment(squashfs_sb_info *msBlk, struct squashfs_fragment_cache *fragment)
++{
++	down(&msBlk->fragment_mutex);
++	fragment->locked --;
++	wake_up(&msBlk->fragment_wait_queue);
++	up(&msBlk->fragment_mutex);
++}
++
++
++struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s, unsigned int start_block, int length)
++{
++	int i, n;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++
++	for(;;) {
++		down(&msBlk->fragment_mutex);
++		for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS && msBlk->fragment[i].block != start_block; i++);
++		if(i == SQUASHFS_CACHED_FRAGMENTS) {
++			for(i = msBlk->next_fragment, n = SQUASHFS_CACHED_FRAGMENTS;
++				n && msBlk->fragment[i].locked; n--, i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS);
++
++			if(n == 0) {
++				wait_queue_t wait;
++
++				init_waitqueue_entry(&wait, current);
++				add_wait_queue(&msBlk->fragment_wait_queue, &wait);
++				up(&msBlk->fragment_mutex);
++				set_current_state(TASK_UNINTERRUPTIBLE);
++				schedule();
++				set_current_state(TASK_RUNNING);
++				remove_wait_queue(&msBlk->fragment_wait_queue, &wait);
++				continue;
++			}
++			msBlk->next_fragment = (msBlk->next_fragment + 1) % SQUASHFS_CACHED_FRAGMENTS;
++			
++			if(msBlk->fragment[i].data == NULL)
++				if(!(msBlk->fragment[i].data = (unsigned char *)
++							SQUASHFS_ALLOC(SQUASHFS_FILE_MAX_SIZE))) {
++					ERROR("Failed to allocate fragment cache block\n");
++					up(&msBlk->fragment_mutex);
++					return NULL;
++				}
++
++			msBlk->fragment[i].block = SQUASHFS_INVALID_BLK;
++			msBlk->fragment[i].locked = 1;
++			up(&msBlk->fragment_mutex);
++			if(!(msBlk->fragment[i].length = read_data(s, msBlk->fragment[i].data, start_block, length,
++							NULL))) {
++				ERROR("Unable to read fragment cache block [%x]\n", start_block);
++				msBlk->fragment[i].locked = 0;
++				return NULL;
++			}
++			msBlk->fragment[i].block = start_block;
++			TRACE("New fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked);
++			return &msBlk->fragment[i];
++		}
++
++		msBlk->fragment[i].locked ++;
++		up(&msBlk->fragment_mutex);
++		
++		TRACE("Got fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked);
++		return &msBlk->fragment[i];
++	}
++}
++
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode)
++{
++	struct inode *i = new_inode(s);
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start;
++	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
++	unsigned int next_block, next_offset;
++	squashfs_base_inode_header_1 inodeb;
++
++	TRACE("Entered squashfs_iget_1\n");
++
++	if(msBlk->swap) {
++		squashfs_base_inode_header_1 sinodeb;
++
++		if(!squashfs_get_cached_block(s, (char *) &sinodeb, block,  offset,
++					sizeof(sinodeb), &next_block, &next_offset))
++			goto failed_read;
++		SQUASHFS_SWAP_BASE_INODE_HEADER_1(&inodeb, &sinodeb, sizeof(sinodeb));
++	} else
++		if(!squashfs_get_cached_block(s, (char *) &inodeb, block,  offset,
++					sizeof(inodeb), &next_block, &next_offset))
++			goto failed_read;
++
++	i->i_nlink = 1;
++
++	i->i_mtime.tv_sec = sBlk->mkfs_time;
++	i->i_atime.tv_sec = sBlk->mkfs_time;
++	i->i_ctime.tv_sec = sBlk->mkfs_time;
++
++	if(inodeb.inode_type != SQUASHFS_IPC_TYPE)
++		i->i_uid = msBlk->uid[((inodeb.inode_type - 1) / SQUASHFS_TYPES) * 16 + inodeb.uid];
++	i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset);
++
++	i->i_mode = inodeb.mode;
++
++	switch(inodeb.inode_type == SQUASHFS_IPC_TYPE ? SQUASHFS_IPC_TYPE : (inodeb.inode_type - 1) % SQUASHFS_TYPES + 1) {
++		case SQUASHFS_FILE_TYPE: {
++			squashfs_reg_inode_header_1 inodep;
++
++			if(msBlk->swap) {
++				squashfs_reg_inode_header_1 sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_REG_INODE_HEADER_1(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.file_size;
++			i->i_fop = &generic_ro_fops;
++			if(sBlk->block_size > 4096)
++				i->i_data.a_ops = &squashfs_aops;
++			else if(sBlk->block_size == 4096)
++				i->i_data.a_ops = &squashfs_aops_4K;
++			else
++				i->i_data.a_ops = &squashfs_aops_lessthan4K;
++			i->i_mode |= S_IFREG;
++			i->i_mtime.tv_sec = inodep.mtime;
++			i->i_atime.tv_sec = inodep.mtime;
++			i->i_ctime.tv_sec = inodep.mtime;
++			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++			i->i_blksize = PAGE_CACHE_SIZE;
++			SQUASHFS_I(i)->u.s1.fragment_start_block = SQUASHFS_INVALID_BLK;
++			SQUASHFS_I(i)->u.s1.fragment_offset = 0;
++			SQUASHFS_I(i)->start_block = inodep.start_block;
++			SQUASHFS_I(i)->block_list_start = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x\n",
++					SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset);
++			break;
++		}
++		case SQUASHFS_DIR_TYPE: {
++			squashfs_dir_inode_header_1 inodep;
++
++			if(msBlk->swap) {
++				squashfs_dir_inode_header_1 sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_DIR_INODE_HEADER_1(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.file_size;
++			i->i_op = &squashfs_dir_inode_ops;
++			i->i_fop = &squashfs_dir_ops;
++			i->i_mode |= S_IFDIR;
++			i->i_mtime.tv_sec = inodep.mtime;
++			i->i_atime.tv_sec = inodep.mtime;
++			i->i_ctime.tv_sec = inodep.mtime;
++			SQUASHFS_I(i)->start_block = inodep.start_block;
++			SQUASHFS_I(i)->offset = inodep.offset;
++			SQUASHFS_I(i)->u.s2.directory_index_count = 0;
++			TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
++					inodep.start_block, inodep.offset);
++			break;
++		}
++		case SQUASHFS_SYMLINK_TYPE: {
++			squashfs_symlink_inode_header_1 inodep;
++	
++			if(msBlk->swap) {
++				squashfs_symlink_inode_header_1 sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.symlink_size;
++			i->i_op = &page_symlink_inode_operations;
++			i->i_data.a_ops = &squashfs_symlink_aops;
++			i->i_mode |= S_IFLNK;
++			SQUASHFS_I(i)->start_block = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			TRACE("Symbolic link inode %x:%x, start_block %x, offset %x\n",
++				SQUASHFS_INODE_BLK(inode), offset, next_block, next_offset);
++			break;
++		 }
++		 case SQUASHFS_BLKDEV_TYPE:
++		 case SQUASHFS_CHRDEV_TYPE: {
++			squashfs_dev_inode_header_1 inodep;
++
++			if(msBlk->swap) {
++				squashfs_dev_inode_header_1 sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_DEV_INODE_HEADER_1(&inodep, &sinodep);
++			} else	
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = 0;
++			i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK;
++			init_special_inode(i, i->i_mode, old_decode_dev(inodep.rdev));
++			TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev);
++			break;
++		 }
++		 case SQUASHFS_IPC_TYPE: {
++			squashfs_ipc_inode_header_1 inodep;
++
++			if(msBlk->swap) {
++				squashfs_ipc_inode_header_1 sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_IPC_INODE_HEADER_1(&inodep, &sinodep);
++			} else	
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = 0;
++			i->i_mode |= (inodep.type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK;
++			i->i_uid = msBlk->uid[inodep.offset * 16 + inodeb.uid];
++			init_special_inode(i, i->i_mode, 0);
++			break;
++		 }
++		 default:
++			ERROR("Unknown inode type %d in squashfs_iget!\n", inodeb.inode_type);
++				goto failed_read1;
++	}
++	
++	if(inodeb.guid == 15)
++		i->i_gid = i->i_uid;
++	else
++		i->i_gid = msBlk->guid[inodeb.guid];
++
++	insert_inode_hash(i);
++	return i;
++
++failed_read:
++	ERROR("Unable to read inode [%x:%x]\n", block, offset);
++
++failed_read1:
++	return NULL;
++}
++#endif
++
++
++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode)
++{
++	struct inode *i = new_inode(s);
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start;
++	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
++	unsigned int next_block, next_offset;
++	squashfs_base_inode_header inodeb;
++
++	TRACE("Entered squashfs_iget\n");
++
++	if(msBlk->swap) {
++		squashfs_base_inode_header sinodeb;
++
++		if(!squashfs_get_cached_block(s, (char *) &sinodeb, block,  offset,
++					sizeof(sinodeb), &next_block, &next_offset))
++			goto failed_read;
++		SQUASHFS_SWAP_BASE_INODE_HEADER(&inodeb, &sinodeb, sizeof(sinodeb));
++	} else
++		if(!squashfs_get_cached_block(s, (char *) &inodeb, block,  offset,
++					sizeof(inodeb), &next_block, &next_offset))
++			goto failed_read;
++
++	i->i_nlink = 1;
++
++	i->i_mtime.tv_sec = sBlk->mkfs_time;
++	i->i_atime.tv_sec = sBlk->mkfs_time;
++	i->i_ctime.tv_sec = sBlk->mkfs_time;
++
++	i->i_uid = msBlk->uid[inodeb.uid];
++	i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset);
++
++	i->i_mode = inodeb.mode;
++
++	switch(inodeb.inode_type) {
++		case SQUASHFS_FILE_TYPE: {
++			squashfs_reg_inode_header inodep;
++
++			if(msBlk->swap) {
++				squashfs_reg_inode_header sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_REG_INODE_HEADER(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			SQUASHFS_I(i)->u.s1.fragment_start_block = SQUASHFS_INVALID_BLK;
++			if(inodep.fragment != SQUASHFS_INVALID_BLK && !get_fragment_location(s, inodep.fragment,
++							&SQUASHFS_I(i)->u.s1.fragment_start_block, &SQUASHFS_I(i)->u.s1.fragment_size))
++				goto failed_read;
++
++			SQUASHFS_I(i)->u.s1.fragment_offset = inodep.offset;
++			i->i_size = inodep.file_size;
++			i->i_fop = &generic_ro_fops;
++			if(sBlk->block_size > 4096)
++				i->i_data.a_ops = &squashfs_aops;
++			else
++				i->i_data.a_ops = &squashfs_aops_4K;
++			i->i_mode |= S_IFREG;
++			i->i_mtime.tv_sec = inodep.mtime;
++			i->i_atime.tv_sec = inodep.mtime;
++			i->i_ctime.tv_sec = inodep.mtime;
++			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++			i->i_blksize = PAGE_CACHE_SIZE;
++			SQUASHFS_I(i)->start_block = inodep.start_block;
++			SQUASHFS_I(i)->block_list_start = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x\n",
++					SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset);
++			break;
++		}
++		case SQUASHFS_DIR_TYPE: {
++			squashfs_dir_inode_header inodep;
++
++			if(msBlk->swap) {
++				squashfs_dir_inode_header sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_DIR_INODE_HEADER(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.file_size;
++			i->i_op = &squashfs_dir_inode_ops;
++			i->i_fop = &squashfs_dir_ops;
++			i->i_mode |= S_IFDIR;
++			i->i_mtime.tv_sec = inodep.mtime;
++			i->i_atime.tv_sec = inodep.mtime;
++			i->i_ctime.tv_sec = inodep.mtime;
++			SQUASHFS_I(i)->start_block = inodep.start_block;
++			SQUASHFS_I(i)->offset = inodep.offset;
++			SQUASHFS_I(i)->u.s2.directory_index_count = 0;
++			TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
++					inodep.start_block, inodep.offset);
++			break;
++		}
++		case SQUASHFS_LDIR_TYPE: {
++			squashfs_ldir_inode_header inodep;
++
++			if(msBlk->swap) {
++				squashfs_ldir_inode_header sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_LDIR_INODE_HEADER(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.file_size;
++			i->i_op = &squashfs_dir_inode_ops;
++			i->i_fop = &squashfs_dir_ops;
++			i->i_mode |= S_IFDIR;
++			i->i_mtime.tv_sec = inodep.mtime;
++			i->i_atime.tv_sec = inodep.mtime;
++			i->i_ctime.tv_sec = inodep.mtime;
++			SQUASHFS_I(i)->start_block = inodep.start_block;
++			SQUASHFS_I(i)->offset = inodep.offset;
++			SQUASHFS_I(i)->u.s2.directory_index_start = next_block;
++			SQUASHFS_I(i)->u.s2.directory_index_offset = next_offset;
++			SQUASHFS_I(i)->u.s2.directory_index_count = inodep.i_count;
++			TRACE("Long directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
++					inodep.start_block, inodep.offset);
++			break;
++		}
++		case SQUASHFS_SYMLINK_TYPE: {
++			squashfs_symlink_inode_header inodep;
++	
++			if(msBlk->swap) {
++				squashfs_symlink_inode_header sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_SYMLINK_INODE_HEADER(&inodep, &sinodep);
++			} else
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = inodep.symlink_size;
++			i->i_op = &page_symlink_inode_operations;
++			i->i_data.a_ops = &squashfs_symlink_aops;
++			i->i_mode |= S_IFLNK;
++			SQUASHFS_I(i)->start_block = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			TRACE("Symbolic link inode %x:%x, start_block %x, offset %x\n",
++				SQUASHFS_INODE_BLK(inode), offset, next_block, next_offset);
++			break;
++		 }
++		 case SQUASHFS_BLKDEV_TYPE:
++		 case SQUASHFS_CHRDEV_TYPE: {
++			squashfs_dev_inode_header inodep;
++
++			if(msBlk->swap) {
++				squashfs_dev_inode_header sinodep;
++
++				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
++							&next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_DEV_INODE_HEADER(&inodep, &sinodep);
++			} else	
++				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
++							&next_block, &next_offset))
++					goto failed_read;
++
++			i->i_size = 0;
++			i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK;
++			init_special_inode(i, i->i_mode, old_decode_dev(inodep.rdev));
++			TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev);
++			break;
++		 }
++		 case SQUASHFS_FIFO_TYPE:
++		 case SQUASHFS_SOCKET_TYPE: {
++			i->i_size = 0;
++			i->i_mode |= (inodeb.inode_type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK;
++			init_special_inode(i, i->i_mode, 0);
++			break;
++		 }
++		 default:
++			ERROR("Unknown inode type %d in squashfs_iget!\n", inodeb.inode_type);
++				goto failed_read1;
++	}
++	
++	if(inodeb.guid == SQUASHFS_GUIDS)
++		i->i_gid = i->i_uid;
++	else
++		i->i_gid = msBlk->guid[inodeb.guid];
++
++	insert_inode_hash(i);
++	return i;
++
++failed_read:
++	ERROR("Unable to read inode [%x:%x]\n", block, offset);
++
++failed_read1:
++	return NULL;
++}
++
++
++static int squashfs_fill_super(struct super_block *s,
++		void *data, int silent)
++{
++	squashfs_sb_info *msBlk;
++	squashfs_super_block *sBlk;
++	int i;
++	char b[BDEVNAME_SIZE];
++
++	TRACE("Entered squashfs_read_superblock\n");
++
++	if(!(s->s_fs_info = (void *) kmalloc(sizeof(squashfs_sb_info), GFP_KERNEL))) {
++		ERROR("Failed to allocate superblock\n");
++		return -ENOMEM;
++	}
++	msBlk = (squashfs_sb_info *) s->s_fs_info;
++	sBlk = &msBlk->sBlk;
++	
++	msBlk->devblksize = sb_min_blocksize(s, BLOCK_SIZE);
++	msBlk->devblksize_log2 = ffz(~msBlk->devblksize);
++
++	init_MUTEX(&msBlk->read_page_mutex);
++	init_MUTEX(&msBlk->block_cache_mutex);
++	init_MUTEX(&msBlk->fragment_mutex);
++	
++	init_waitqueue_head(&msBlk->waitq);
++	init_waitqueue_head(&msBlk->fragment_wait_queue);
++
++	if(!read_data(s, (char *) sBlk, SQUASHFS_START, sizeof(squashfs_super_block) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++		SERROR("unable to read superblock\n");
++		goto failed_mount;
++	}
++
++	/* Check it is a SQUASHFS superblock */
++	msBlk->swap = 0;
++	if((s->s_magic = sBlk->s_magic) != SQUASHFS_MAGIC) {
++		if(sBlk->s_magic == SQUASHFS_MAGIC_SWAP) {
++			squashfs_super_block sblk;
++			WARNING("Mounting a different endian SQUASHFS filesystem on %s\n", bdevname(s->s_bdev, b));
++			SQUASHFS_SWAP_SUPER_BLOCK(&sblk, sBlk);
++			memcpy(sBlk, &sblk, sizeof(squashfs_super_block));
++			msBlk->swap = 1;
++		} else  {
++			SERROR("Can't find a SQUASHFS superblock on %s\n", bdevname(s->s_bdev, b));
++			goto failed_mount;
++		}
++	}
++
++	/* Check the MAJOR & MINOR versions */
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++	if((sBlk->s_major != 1) && (sBlk->s_major != 2 || sBlk->s_minor > SQUASHFS_MINOR)) {
++		SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (1 : x) or (2 : <= %d)\n",
++				sBlk->s_major, sBlk->s_minor, SQUASHFS_MINOR);
++		goto failed_mount;
++	}
++	if(sBlk->s_major == 1)
++		sBlk->block_size = sBlk->block_size_1;
++#else
++	if(sBlk->s_major != SQUASHFS_MAJOR || sBlk->s_minor > SQUASHFS_MINOR) {
++		SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (%d: <= %d)\n",
++				sBlk->s_major, sBlk->s_minor, SQUASHFS_MAJOR, SQUASHFS_MINOR);
++		goto failed_mount;
++	}
++#endif
++
++	TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b));
++	TRACE("Inodes are %scompressed\n", SQUASHFS_UNCOMPRESSED_INODES(sBlk->flags) ? "un" : "");
++	TRACE("Data is %scompressed\n", SQUASHFS_UNCOMPRESSED_DATA(sBlk->flags) ? "un" : "");
++	TRACE("Check data is %s present in the filesystem\n", SQUASHFS_CHECK_DATA(sBlk->flags) ? "" : "not");
++	TRACE("Filesystem size %d bytes\n", sBlk->bytes_used);
++	TRACE("Block size %d\n", sBlk->block_size);
++	TRACE("Number of inodes %d\n", sBlk->inodes);
++	if(sBlk->s_major > 1)
++		TRACE("Number of fragments %d\n", sBlk->fragments);
++	TRACE("Number of uids %d\n", sBlk->no_uids);
++	TRACE("Number of gids %d\n", sBlk->no_guids);
++	TRACE("sBlk->inode_table_start %x\n", sBlk->inode_table_start);
++	TRACE("sBlk->directory_table_start %x\n", sBlk->directory_table_start);
++		if(sBlk->s_major > 1)
++	TRACE("sBlk->fragment_table_start %x\n", sBlk->fragment_table_start);
++	TRACE("sBlk->uid_start %x\n", sBlk->uid_start);
++
++	s->s_flags |= MS_RDONLY;
++	s->s_op = &squashfs_ops;
++
++	/* Init inode_table block pointer array */
++	if(!(msBlk->block_cache = (squashfs_cache *) kmalloc(sizeof(squashfs_cache) * SQUASHFS_CACHED_BLKS, GFP_KERNEL))) {
++		ERROR("Failed to allocate block cache\n");
++		goto failed_mount;
++	}
++
++	for(i = 0; i < SQUASHFS_CACHED_BLKS; i++)
++		msBlk->block_cache[i].block = SQUASHFS_INVALID_BLK;
++
++	msBlk->next_cache = 0;
++
++	/* Allocate read_data block */
++	msBlk->read_size = (sBlk->block_size < SQUASHFS_METADATA_SIZE) ? SQUASHFS_METADATA_SIZE : sBlk->block_size;
++	if(!(msBlk->read_data = (char *) kmalloc(msBlk->read_size, GFP_KERNEL))) {
++		ERROR("Failed to allocate read_data block\n");
++		goto failed_mount1;
++	}
++
++	/* Allocate read_page block */
++	if(sBlk->block_size > PAGE_CACHE_SIZE) {
++		if(!(msBlk->read_page = (char *) kmalloc(sBlk->block_size, GFP_KERNEL))) {
++			ERROR("Failed to allocate read_page block\n");
++			goto failed_mount2;
++		}
++	} else
++		msBlk->read_page = NULL;
++
++	/* Allocate uid and gid tables */
++	if(!(msBlk->uid = (squashfs_uid *) kmalloc((sBlk->no_uids +
++		sBlk->no_guids) * sizeof(squashfs_uid), GFP_KERNEL))) {
++		ERROR("Failed to allocate uid/gid table\n");
++		goto failed_mount3;
++	}
++	msBlk->guid = msBlk->uid + sBlk->no_uids;
++   
++	if(msBlk->swap) {
++		squashfs_uid suid[sBlk->no_uids + sBlk->no_guids];
++
++		if(!read_data(s, (char *) &suid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) *
++				sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++			SERROR("unable to read uid/gid table\n");
++			goto failed_mount4;
++		}
++		SQUASHFS_SWAP_DATA(msBlk->uid, suid, (sBlk->no_uids + sBlk->no_guids), (sizeof(squashfs_uid) * 8));
++	} else
++		if(!read_data(s, (char *) msBlk->uid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) *
++				sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++			SERROR("unable to read uid/gid table\n");
++			goto failed_mount4;
++		}
++
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++	if(sBlk->s_major == 1) {
++		msBlk->iget = squashfs_iget_1;
++		msBlk->read_blocklist = read_blocklist_1;
++		msBlk->fragment = NULL;
++		msBlk->fragment_index = NULL;
++		goto allocate_root;
++	}
++#endif
++	msBlk->iget = squashfs_iget;
++	msBlk->read_blocklist = read_blocklist;
++
++	if(!(msBlk->fragment = (struct squashfs_fragment_cache *) kmalloc(sizeof(struct squashfs_fragment_cache) * SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) {
++		ERROR("Failed to allocate fragment block cache\n");
++		goto failed_mount4;
++	}
++
++	for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) {
++		msBlk->fragment[i].locked = 0;
++		msBlk->fragment[i].block = SQUASHFS_INVALID_BLK;
++		msBlk->fragment[i].data = NULL;
++	}
++
++	msBlk->next_fragment = 0;
++
++	/* Allocate fragment index table */
++	if(!(msBlk->fragment_index = (squashfs_fragment_index *) kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments), GFP_KERNEL))) {
++		ERROR("Failed to allocate uid/gid table\n");
++		goto failed_mount5;
++	}
++   
++	if(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) &&
++	 	!read_data(s, (char *) msBlk->fragment_index, sBlk->fragment_table_start,
++		SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++			SERROR("unable to read fragment index table\n");
++			goto failed_mount6;
++	}
++
++	if(msBlk->swap) {
++		int i;
++		squashfs_fragment_index fragment;
++
++		for(i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sBlk->fragments); i++) {
++			SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), &msBlk->fragment_index[i], 1);
++			msBlk->fragment_index[i] = fragment;
++		}
++	}
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++allocate_root:
++#endif
++	if(!(s->s_root = d_alloc_root((msBlk->iget)(s, sBlk->root_inode)))) {
++		ERROR("Root inode create failed\n");
++		goto failed_mount5;
++	}
++
++	TRACE("Leaving squashfs_read_super\n");
++	return 0;
++
++failed_mount6:
++	kfree(msBlk->fragment_index);
++failed_mount5:
++	kfree(msBlk->fragment);
++failed_mount4:
++	kfree(msBlk->uid);
++failed_mount3:
++	kfree(msBlk->read_page);
++failed_mount2:
++	kfree(msBlk->read_data);
++failed_mount1:
++	kfree(msBlk->block_cache);
++failed_mount:
++	kfree(s->s_fs_info);
++	s->s_fs_info = NULL;
++	return -EINVAL;
++}
++
++
++static int squashfs_statfs(struct super_block *s, struct kstatfs *buf)
++{
++	squashfs_super_block *sBlk = &((squashfs_sb_info *)s->s_fs_info)->sBlk;
++
++	TRACE("Entered squashfs_statfs\n");
++	buf->f_type = SQUASHFS_MAGIC;
++	buf->f_bsize = sBlk->block_size;
++	buf->f_blocks = ((sBlk->bytes_used - 1) >> sBlk->block_log) + 1;
++	buf->f_bfree = buf->f_bavail = 0;
++	buf->f_files = sBlk->inodes;
++	buf->f_ffree = 0;
++	buf->f_namelen = SQUASHFS_NAME_LEN;
++	return 0;
++}
++
++
++static int squashfs_symlink_readpage(struct file *file, struct page *page)
++{
++	struct inode *inode = page->mapping->host;
++	int index = page->index << PAGE_CACHE_SHIFT, length, bytes;
++	unsigned int block = SQUASHFS_I(inode)->start_block;
++	int offset = SQUASHFS_I(inode)->offset;
++	void *pageaddr = kmap(page);
++
++	TRACE("Entered squashfs_symlink_readpage, page index %d, start block %x, offset %x\n",
++		page->index, SQUASHFS_I(inode)->start_block, SQUASHFS_I(inode)->offset);
++
++	for(length = 0; length < index; length += bytes) {
++		if(!(bytes = squashfs_get_cached_block(inode->i_sb, NULL, block, offset,
++					PAGE_CACHE_SIZE, &block, &offset))) {
++			ERROR("Unable to read symbolic link [%x:%x]\n", block, offset);
++			goto skip_read;
++		}
++	}
++
++	if(length != index) {
++		ERROR("(squashfs_symlink_readpage) length != index\n");
++		bytes = 0;
++		goto skip_read;
++	}
++
++	bytes = (inode->i_size - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : inode->i_size - length;
++	if(!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, offset, bytes, &block, &offset)))
++		ERROR("Unable to read symbolic link [%x:%x]\n", block, offset);
++
++skip_read:
++	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++	kunmap(page);
++	flush_dcache_page(page);
++	SetPageUptodate(page);
++	unlock_page(page);
++
++	return 0;
++}
++
++
++#define SIZE 256
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks,
++		char *block_list, unsigned short **block_p, unsigned int *bsize)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info;
++	unsigned short *block_listp;
++	int i = 0;
++	int block_ptr = SQUASHFS_I(inode)->block_list_start;
++	int offset = SQUASHFS_I(inode)->offset;
++	unsigned int block = SQUASHFS_I(inode)->start_block;
++
++	for(;;) {
++		int blocks = (index + readahead_blks - i);
++		if(blocks > (SIZE >> 1)) {
++			if((index - i) <= (SIZE >> 1))
++				blocks = index - i;
++			else
++				blocks = SIZE >> 1;
++		}
++
++		if(msBlk->swap) {
++			unsigned char sblock_list[SIZE];
++			if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) {
++				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
++				return 0;
++			}
++			SQUASHFS_SWAP_SHORTS(((unsigned short *)block_list), ((unsigned short *)sblock_list), blocks);
++		} else
++			if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) {
++				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
++				return 0;
++			}
++		for(block_listp = (unsigned short *) block_list; i < index && blocks; i ++, block_listp ++, blocks --)
++			block += SQUASHFS_COMPRESSED_SIZE(*block_listp);
++		if(blocks >= readahead_blks)
++			break;
++	}
++
++	if(bsize)
++		*bsize = SQUASHFS_COMPRESSED_SIZE(*block_listp) | (!SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_BIT_BLOCK : 0);
++	else
++		*block_p = block_listp;
++	return block;
++}
++#endif
++
++
++static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks,
++		char *block_list, unsigned short **block_p, unsigned int *bsize)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info;
++	unsigned int *block_listp;
++	int i = 0;
++	int block_ptr = SQUASHFS_I(inode)->block_list_start;
++	int offset = SQUASHFS_I(inode)->offset;
++	unsigned int block = SQUASHFS_I(inode)->start_block;
++
++	for(;;) {
++		int blocks = (index + readahead_blks - i);
++		if(blocks > (SIZE >> 2)) {
++			if((index - i) <= (SIZE >> 2))
++				blocks = index - i;
++			else
++				blocks = SIZE >> 2;
++		}
++
++		if(msBlk->swap) {
++			unsigned char sblock_list[SIZE];
++			if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) {
++				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
++				return 0;
++			}
++			SQUASHFS_SWAP_INTS(((unsigned int *)block_list), ((unsigned int *)sblock_list), blocks);
++		} else
++			if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) {
++				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
++				return 0;
++			}
++		for(block_listp = (unsigned int *) block_list; i < index && blocks; i ++, block_listp ++, blocks --)
++			block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp);
++		if(blocks >= readahead_blks)
++			break;
++	}
++
++	*bsize = *block_listp;
++	return block;
++}
++
++
++static int squashfs_readpage(struct file *file, struct page *page)
++{
++	struct inode *inode = page->mapping->host;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	unsigned char block_list[SIZE];
++	unsigned int bsize, block, i = 0, bytes = 0, byte_offset = 0;
++	int index = page->index >> (sBlk->block_log - PAGE_CACHE_SHIFT);
++ 	void *pageaddr = kmap(page);
++	struct squashfs_fragment_cache *fragment = NULL;
++	char *data_ptr = msBlk->read_page;
++	
++	int mask = (1 << (sBlk->block_log - PAGE_CACHE_SHIFT)) - 1;
++	int start_index = page->index & ~mask;
++	int end_index = start_index | mask;
++
++	TRACE("Entered squashfs_readpage, page index %x, start block %x\n", (unsigned int) page->index,
++		SQUASHFS_I(inode)->start_block);
++
++	if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) {
++		goto skip_read;
++	}
++
++	if(SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || index < (inode->i_size >> sBlk->block_log)) {
++		if((block = (msBlk->read_blocklist)(inode, index, 1, block_list, NULL, &bsize)) == 0)
++			goto skip_read;
++
++		down(&msBlk->read_page_mutex);
++		if(!(bytes = read_data(inode->i_sb, msBlk->read_page, block, bsize, NULL))) {
++			ERROR("Unable to read page, block %x, size %x\n", block, bsize);
++			up(&msBlk->read_page_mutex);
++			goto skip_read;
++		}
++	} else {
++		if((fragment = get_cached_fragment(inode->i_sb, SQUASHFS_I(inode)->u.s1.fragment_start_block, SQUASHFS_I(inode)->u.s1.fragment_size)) == NULL) {
++			ERROR("Unable to read page, block %x, size %x\n", SQUASHFS_I(inode)->u.s1.fragment_start_block, (int) SQUASHFS_I(inode)->u.s1.fragment_size);
++			goto skip_read;
++		}
++		bytes = SQUASHFS_I(inode)->u.s1.fragment_offset + (inode->i_size & (sBlk->block_size - 1));
++		byte_offset = SQUASHFS_I(inode)->u.s1.fragment_offset;
++		data_ptr = fragment->data;
++	}
++
++	for(i = start_index; i <= end_index && byte_offset < bytes; i++, byte_offset += PAGE_CACHE_SIZE) {
++		struct page *push_page;
++		int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : bytes - byte_offset;
++
++		TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n", bytes, i, byte_offset, available_bytes);
++
++		if(i == page->index)  {
++			memcpy(pageaddr, data_ptr + byte_offset, available_bytes);
++			memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes);
++			kunmap(page);
++			flush_dcache_page(page);
++			SetPageUptodate(page);
++			unlock_page(page);
++		} else if((push_page = grab_cache_page_nowait(page->mapping, i))) {
++ 			void *pageaddr = kmap(push_page);
++			memcpy(pageaddr, data_ptr + byte_offset, available_bytes);
++			memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes);
++			kunmap(push_page);
++			flush_dcache_page(push_page);
++			SetPageUptodate(push_page);
++			unlock_page(push_page);
++			page_cache_release(push_page);
++		}
++	}
++
++	if(SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || index < (inode->i_size >> sBlk->block_log))
++		up(&msBlk->read_page_mutex);
++	else
++		release_cached_fragment(msBlk, fragment);
++
++	return 0;
++
++skip_read:
++	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++	kunmap(page);
++	flush_dcache_page(page);
++	SetPageUptodate(page);
++	unlock_page(page);
++
++	return 0;
++}
++
++
++static int squashfs_readpage4K(struct file *file, struct page *page)
++{
++	struct inode *inode = page->mapping->host;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	unsigned char block_list[SIZE];
++	unsigned int bsize, block, bytes = 0;
++ 	void *pageaddr = kmap(page);
++	
++	TRACE("Entered squashfs_readpage4K, page index %x, start block %x\n", (unsigned int) page->index,
++		SQUASHFS_I(inode)->start_block);
++
++	if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) {
++		goto skip_read;
++	}
++
++	if(SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || page->index < (inode->i_size >> sBlk->block_log)) {
++		block = (msBlk->read_blocklist)(inode, page->index, 1, block_list, NULL, &bsize);
++
++		if(!(bytes = read_data(inode->i_sb, pageaddr, block, bsize, NULL)))
++			ERROR("Unable to read page, block %x, size %x\n", block, bsize);
++	} else {
++		struct squashfs_fragment_cache *fragment;
++
++		if((fragment = get_cached_fragment(inode->i_sb, SQUASHFS_I(inode)->u.s1.fragment_start_block, SQUASHFS_I(inode)->u.s1.fragment_size)) == NULL)
++			ERROR("Unable to read page, block %x, size %x\n", SQUASHFS_I(inode)->u.s1.fragment_start_block, (int) SQUASHFS_I(inode)->u.s1.fragment_size);
++		else {
++			bytes = inode->i_size & (sBlk->block_size - 1);
++			memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)->u.s1.fragment_offset, bytes);
++			release_cached_fragment(msBlk, fragment);
++		}
++	}
++
++skip_read:
++	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++	kunmap(page);
++	flush_dcache_page(page);
++	SetPageUptodate(page);
++	unlock_page(page);
++
++	return 0;
++}
++
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++static int squashfs_readpage_lessthan4K(struct file *file, struct page *page)
++{
++	struct inode *inode = page->mapping->host;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	unsigned char block_list[SIZE];
++	unsigned short *block_listp, block, bytes = 0;
++	int index = page->index << (PAGE_CACHE_SHIFT - sBlk->block_log);
++	int file_blocks = ((inode->i_size - 1) >> sBlk->block_log) + 1;
++	int readahead_blks = 1 << (PAGE_CACHE_SHIFT - sBlk->block_log);
++ 	void *pageaddr = kmap(page);
++	
++	int i_end = index + (1 << (PAGE_CACHE_SHIFT - sBlk->block_log));
++	int byte;
++
++	TRACE("Entered squashfs_readpage_lessthan4K, page index %x, start block %x\n", (unsigned int) page->index,
++		SQUASHFS_I(inode)->start_block);
++
++	block = read_blocklist_1(inode, index, readahead_blks, block_list, &block_listp, NULL);
++
++	if(i_end > file_blocks)
++		i_end = file_blocks;
++
++	while(index < i_end) {
++		int c_byte = !SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_SIZE(*block_listp) | SQUASHFS_COMPRESSED_BIT_BLOCK : *block_listp;
++		if(!(byte = read_data(inode->i_sb, pageaddr, block, c_byte, NULL))) {
++			ERROR("Unable to read page, block %x, size %x\n", block, *block_listp);
++			goto skip_read;
++		}
++		block += SQUASHFS_COMPRESSED_SIZE(*block_listp);
++		pageaddr += byte;
++		bytes += byte;
++		index ++;
++		block_listp ++;
++	}
++
++skip_read:
++	memset(pageaddr, 0, PAGE_CACHE_SIZE - bytes);
++	kunmap(page);
++	flush_dcache_page(page);
++	SetPageUptodate(page);
++	unlock_page(page);
++
++	return 0;
++}
++#endif
++
++
++static int get_dir_index_using_offset(struct super_block *s, unsigned int *next_block,
++	unsigned int *next_offset, unsigned int index_start, unsigned int index_offset,
++	int i_count, long long f_pos)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	int i, length = 0;
++	squashfs_dir_index index;
++
++	TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", i_count, (unsigned int) f_pos);
++
++	if(f_pos == 0)
++		return 0;
++
++	for(i = 0; i < i_count; i++) {
++		if(msBlk->swap) {
++			squashfs_dir_index sindex;
++			squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset,
++				sizeof(sindex), &index_start, &index_offset);
++			SQUASHFS_SWAP_DIR_INDEX(&index, &sindex);
++		} else
++			squashfs_get_cached_block(s, (char *) &index, index_start, index_offset,
++				sizeof(index), &index_start, &index_offset);
++
++		if(index.index > f_pos)
++			break;
++
++		squashfs_get_cached_block(s, NULL, index_start, index_offset,
++				index.size + 1, &index_start, &index_offset);
++
++		length = index.index;
++		*next_block = index.start_block + sBlk->directory_table_start;
++	}
++
++	*next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++	return length;
++}
++
++
++static int get_dir_index_using_name(struct super_block *s, unsigned int *next_block,
++	unsigned int *next_offset, unsigned int index_start, unsigned int index_offset,
++	int i_count, const char *name, int size)
++{
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	int i, length = 0;
++	char buffer[sizeof(squashfs_dir_index) + SQUASHFS_NAME_LEN + 1];
++	squashfs_dir_index *index = (squashfs_dir_index *) buffer;
++	char str[SQUASHFS_NAME_LEN + 1];
++
++	TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
++
++	strncpy(str, name, size);
++	str[size] = '\0';
++
++	for(i = 0; i < i_count; i++) {
++		if(msBlk->swap) {
++			squashfs_dir_index sindex;
++			squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset,
++				sizeof(sindex), &index_start, &index_offset);
++			SQUASHFS_SWAP_DIR_INDEX(index, &sindex);
++		} else
++			squashfs_get_cached_block(s, (char *) index, index_start, index_offset,
++				sizeof(squashfs_dir_index), &index_start, &index_offset);
++
++		squashfs_get_cached_block(s, index->name, index_start, index_offset,
++				index->size + 1, &index_start, &index_offset);
++
++		index->name[index->size + 1] = '\0';
++
++		if(strcmp(index->name, str) > 0)
++			break;
++
++		length = index->index;
++		*next_block = index->start_block + sBlk->directory_table_start;
++	}
++
++	*next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++	return length;
++}
++
++		
++static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
++{
++	struct inode *i = file->f_dentry->d_inode;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)i->i_sb->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	int next_block = SQUASHFS_I(i)->start_block + sBlk->directory_table_start, next_offset =
++		SQUASHFS_I(i)->offset, length = 0, dirs_read = 0, dir_count;
++	squashfs_dir_header dirh;
++	char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1];
++	squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer;
++
++	TRACE("Entered squashfs_readdir [%x:%x]\n", next_block, next_offset);
++
++	lock_kernel();
++
++	length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, SQUASHFS_I(i)->u.s2.directory_index_start,
++		SQUASHFS_I(i)->u.s2.directory_index_offset, SQUASHFS_I(i)->u.s2.directory_index_count, file->f_pos);
++
++	while(length < i->i_size) {
++		/* read directory header */
++		if(msBlk->swap) {
++			squashfs_dir_header sdirh;
++			if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block,
++						next_offset, sizeof(sdirh), &next_block, &next_offset))
++				goto failed_read;
++			length += sizeof(sdirh);
++			SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
++		} else {
++			if(!squashfs_get_cached_block(i->i_sb, (char *) &dirh, next_block,
++						next_offset, sizeof(dirh), &next_block, &next_offset))
++				goto failed_read;
++			length += sizeof(dirh);
++		}
++
++		dir_count = dirh.count + 1;
++		while(dir_count--) {
++			if(msBlk->swap) {
++				squashfs_dir_entry sdire;
++				if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire, next_block,
++							next_offset, sizeof(sdire), &next_block, &next_offset))
++					goto failed_read;
++				length += sizeof(sdire);
++				SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
++			} else {
++				if(!squashfs_get_cached_block(i->i_sb, (char *) dire, next_block,
++							next_offset, sizeof(*dire), &next_block, &next_offset))
++					goto failed_read;
++				length += sizeof(*dire);
++			}
++
++			if(!squashfs_get_cached_block(i->i_sb, dire->name, next_block,
++						next_offset, dire->size + 1, &next_block, &next_offset))
++				goto failed_read;
++			length += dire->size + 1;
++
++			if(file->f_pos >= length)
++				continue;
++
++			dire->name[dire->size + 1] = '\0';
++
++			TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d)\n", (unsigned int) dirent,
++			dire->name, dire->size + 1, (int) file->f_pos,
++			dirh.start_block, dire->offset, squashfs_filetype_table[dire->type]);
++
++			if(filldir(dirent, dire->name, dire->size + 1, file->f_pos, SQUASHFS_MK_VFS_INODE(dirh.start_block,
++							dire->offset), squashfs_filetype_table[dire->type]) < 0) {
++				TRACE("Filldir returned less than 0\n");
++				unlock_kernel();
++				return dirs_read;
++			}
++
++			file->f_pos = length;
++			dirs_read ++;
++		}
++	}
++
++	unlock_kernel();
++	return dirs_read;
++
++failed_read:
++	unlock_kernel();
++	ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset);
++	return 0;
++}
++
++
++static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry, struct nameidata *nd)
++{
++	const unsigned char *name =dentry->d_name.name;
++	int len = dentry->d_name.len;
++	struct inode *inode = NULL;
++	squashfs_sb_info *msBlk = (squashfs_sb_info *)i->i_sb->s_fs_info;
++	squashfs_super_block *sBlk = &msBlk->sBlk;
++	int next_block = SQUASHFS_I(i)->start_block + sBlk->directory_table_start, next_offset =
++		SQUASHFS_I(i)->offset, length = 0, dir_count;
++	squashfs_dir_header dirh;
++	char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN];
++	squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer;
++	int squashfs_2_1 = sBlk->s_major == 2 && sBlk->s_minor == 1;
++
++	TRACE("Entered squashfs_lookup [%x:%x]\n", next_block, next_offset);
++
++	lock_kernel();
++
++	length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, SQUASHFS_I(i)->u.s2.directory_index_start,
++		SQUASHFS_I(i)->u.s2.directory_index_offset, SQUASHFS_I(i)->u.s2.directory_index_count, name, len);
++
++	while(length < i->i_size) {
++		/* read directory header */
++		if(msBlk->swap) {
++			squashfs_dir_header sdirh;
++			if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block, next_offset,
++						sizeof(sdirh), &next_block, &next_offset))
++				goto failed_read;
++			length += sizeof(sdirh);
++			SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
++		} else {
++			if(!squashfs_get_cached_block(i->i_sb, (char *) &dirh, next_block, next_offset,
++						sizeof(dirh), &next_block, &next_offset))
++				goto failed_read;
++			length += sizeof(dirh);
++		}
++
++		dir_count = dirh.count + 1;
++		while(dir_count--) {
++			if(msBlk->swap) {
++				squashfs_dir_entry sdire;
++				if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire,
++							next_block,next_offset, sizeof(sdire), &next_block, &next_offset))
++					goto failed_read;
++				length += sizeof(sdire);
++				SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
++			} else {
++				if(!squashfs_get_cached_block(i->i_sb, (char *) dire,
++							next_block,next_offset, sizeof(*dire), &next_block, &next_offset))
++					goto failed_read;
++				length += sizeof(*dire);
++			}
++
++			if(!squashfs_get_cached_block(i->i_sb, dire->name,
++						next_block, next_offset, dire->size + 1, &next_block, &next_offset))
++				goto failed_read;
++			length += dire->size + 1;
++
++			if(squashfs_2_1 && name[0] < dire->name[0])
++				goto exit_loop;
++
++			if((len == dire->size + 1) && !strncmp(name, dire->name, len)) {
++				squashfs_inode ino = SQUASHFS_MKINODE(dirh.start_block, dire->offset);
++
++				TRACE("calling squashfs_iget for directory entry %s, inode %x:%x\n",
++						name, dirh.start_block, dire->offset);
++
++				inode = (msBlk->iget)(i->i_sb, ino);
++
++				goto exit_loop;
++			}
++		}
++	}
++
++exit_loop:
++	d_add(dentry, inode);
++	unlock_kernel();
++	return ERR_PTR(0);
++
++failed_read:
++	ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset);
++	goto exit_loop;
++}
++
++
++static void squashfs_put_super(struct super_block *s)
++{
++	int i;
++
++	if(s->s_fs_info) {
++		squashfs_sb_info *sbi = (squashfs_sb_info *) s->s_fs_info;
++		if(sbi->block_cache) {
++			for(i = 0; i < SQUASHFS_CACHED_BLKS; i++)
++				if(sbi->block_cache[i].block != SQUASHFS_INVALID_BLK)
++					kfree(sbi->block_cache[i].data);
++			kfree(sbi->block_cache);
++		}
++		if(sbi->read_data) kfree(sbi->read_data);
++		if(sbi->read_page) kfree(sbi->read_page);
++		if(sbi->uid) kfree(sbi->uid);
++		if(sbi->fragment) {
++			for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) 
++				if(sbi->fragment[i].data != NULL)
++					SQUASHFS_FREE(sbi->fragment[i].data);
++			kfree(sbi->fragment);
++		}
++		if(sbi->fragment_index) kfree(sbi->fragment_index);
++		kfree(s->s_fs_info);
++		s->s_fs_info = NULL;
++	}
++}
++
++
++static struct super_block *squashfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
++{
++	return get_sb_bdev(fs_type, flags, dev_name, data, squashfs_fill_super);
++}
++
++
++static int __init init_squashfs_fs(void)
++{
++	int err = init_inodecache();
++	if(err)
++		return err;
++
++	printk(KERN_INFO "Squashfs 2.2 (released 2005/07/03) (C) 2002-2005 Phillip Lougher\n");
++
++	if(!(stream.workspace = (char *) vmalloc(zlib_inflate_workspacesize()))) {
++		ERROR("Failed to allocate zlib workspace\n");
++		destroy_inodecache();
++		return -ENOMEM;
++	}
++
++	if((err = register_filesystem(&squashfs_fs_type))) {
++		vfree(stream.workspace);
++		destroy_inodecache();
++	}
++
++	return err;
++}
++
++
++static void __exit exit_squashfs_fs(void)
++{
++	vfree(stream.workspace);
++	unregister_filesystem(&squashfs_fs_type);
++	destroy_inodecache();
++}
++
++
++static kmem_cache_t * squashfs_inode_cachep;
++
++
++static struct inode *squashfs_alloc_inode(struct super_block *sb)
++{
++	struct squashfs_inode_info *ei;
++	ei = (struct squashfs_inode_info *)kmem_cache_alloc(squashfs_inode_cachep, SLAB_KERNEL);
++	if (!ei)
++		return NULL;
++	return &ei->vfs_inode;
++}
++
++
++static void squashfs_destroy_inode(struct inode *inode)
++{
++	kmem_cache_free(squashfs_inode_cachep, SQUASHFS_I(inode));
++}
++
++
++static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
++{
++	struct squashfs_inode_info *ei = (struct squashfs_inode_info *) foo;
++
++	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
++	    SLAB_CTOR_CONSTRUCTOR)
++		inode_init_once(&ei->vfs_inode);
++}
++ 
++
++static int init_inodecache(void)
++{
++	squashfs_inode_cachep = kmem_cache_create("squashfs_inode_cache",
++					     sizeof(struct squashfs_inode_info),
++					     0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
++					     init_once, NULL);
++	if (squashfs_inode_cachep == NULL)
++		return -ENOMEM;
++	return 0;
++}
++
++
++static void destroy_inodecache(void)
++{
++	if (kmem_cache_destroy(squashfs_inode_cachep))
++		printk(KERN_INFO "squashfs_inode_cache: not all structures were freed\n");
++}
++
++
++module_init(init_squashfs_fs);
++module_exit(exit_squashfs_fs);
++MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem");
++MODULE_AUTHOR("Phillip Lougher <phillip@lougher.demon.co.uk>");
++MODULE_LICENSE("GPL");
+diff --new-file -urp linux-2.6.12/fs/squashfs/Makefile linux-2.6.12-squashfs2.2/fs/squashfs/Makefile
+--- linux-2.6.12/fs/squashfs/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.12-squashfs2.2/fs/squashfs/Makefile	2005-07-04 02:35:35.000000000 +0100
+@@ -0,0 +1,7 @@
++#
++# Makefile for the linux squashfs routines.
++#
++
++obj-$(CONFIG_SQUASHFS) += squashfs.o
++
++squashfs-objs := inode.o
+diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs.h
+--- linux-2.6.12/include/linux/squashfs_fs.h	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs.h	2005-07-04 02:35:35.000000000 +0100
+@@ -0,0 +1,519 @@
++#ifndef SQUASHFS_FS
++#define SQUASHFS_FS
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
++ *
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs.h
++ */
++
++#ifdef	CONFIG_SQUASHFS_VMALLOC
++#define SQUASHFS_ALLOC(a)		vmalloc(a)
++#define SQUASHFS_FREE(a)		vfree(a)
++#else
++#define SQUASHFS_ALLOC(a)		kmalloc(a, GFP_KERNEL)
++#define SQUASHFS_FREE(a)		kfree(a)
++#endif
++#define SQUASHFS_CACHED_FRAGMENTS	CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE	
++#define SQUASHFS_MAJOR			2
++#define SQUASHFS_MINOR			1
++#define SQUASHFS_MAGIC			0x73717368
++#define SQUASHFS_MAGIC_SWAP		0x68737173
++#define SQUASHFS_START			0
++
++/* size of metadata (inode and directory) blocks */
++#define SQUASHFS_METADATA_SIZE		8192
++#define SQUASHFS_METADATA_LOG		13
++
++/* default size of data blocks */
++#define SQUASHFS_FILE_SIZE		65536
++#define SQUASHFS_FILE_LOG		16
++
++#define SQUASHFS_FILE_MAX_SIZE		65536
++
++/* Max number of uids and gids */
++#define SQUASHFS_UIDS			256
++#define SQUASHFS_GUIDS			255
++
++/* Max length of filename (not 255) */
++#define SQUASHFS_NAME_LEN		256
++
++#define SQUASHFS_INVALID		((long long) 0xffffffffffff)
++#define SQUASHFS_INVALID_BLK		((long long) 0xffffffff)
++#define SQUASHFS_USED_BLK		((long long) 0xfffffffe)
++
++/* Filesystem flags */
++#define SQUASHFS_NOI			0
++#define SQUASHFS_NOD			1
++#define SQUASHFS_CHECK			2
++#define SQUASHFS_NOF			3
++#define SQUASHFS_NO_FRAG		4
++#define SQUASHFS_ALWAYS_FRAG		5
++#define SQUASHFS_DUPLICATE		6
++#define SQUASHFS_BIT(flag, bit)		((flag >> bit) & 1)
++#define SQUASHFS_UNCOMPRESSED_INODES(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOI)
++#define SQUASHFS_UNCOMPRESSED_DATA(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOD)
++#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOF)
++#define SQUASHFS_NO_FRAGMENTS(flags)		SQUASHFS_BIT(flags, SQUASHFS_NO_FRAG)
++#define SQUASHFS_ALWAYS_FRAGMENTS(flags)	SQUASHFS_BIT(flags, SQUASHFS_ALWAYS_FRAG)
++#define SQUASHFS_DUPLICATES(flags)		SQUASHFS_BIT(flags, SQUASHFS_DUPLICATE)
++#define SQUASHFS_CHECK_DATA(flags)		SQUASHFS_BIT(flags, SQUASHFS_CHECK)
++#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, duplicate_checking)	(noi | (nod << 1) | (check_data << 2) | (nof << 3) | (no_frag << 4) | (always_frag << 5) | (duplicate_checking << 6))
++
++/* Max number of types and file types */
++#define SQUASHFS_DIR_TYPE		1
++#define SQUASHFS_FILE_TYPE		2
++#define SQUASHFS_SYMLINK_TYPE		3
++#define SQUASHFS_BLKDEV_TYPE		4
++#define SQUASHFS_CHRDEV_TYPE		5
++#define SQUASHFS_FIFO_TYPE		6
++#define SQUASHFS_SOCKET_TYPE		7
++#define SQUASHFS_LDIR_TYPE		8
++
++/* 1.0 filesystem type definitions */
++#define SQUASHFS_TYPES			5
++#define SQUASHFS_IPC_TYPE		0
++
++/* Flag whether block is compressed or uncompressed, bit is set if block is uncompressed */
++#define SQUASHFS_COMPRESSED_BIT		(1 << 15)
++#define SQUASHFS_COMPRESSED_SIZE(B)	(((B) & ~SQUASHFS_COMPRESSED_BIT) ? \
++					(B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT)
++
++#define SQUASHFS_COMPRESSED(B)		(!((B) & SQUASHFS_COMPRESSED_BIT))
++
++#define SQUASHFS_COMPRESSED_BIT_BLOCK		(1 << 24)
++#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B)	(((B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? \
++					(B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK)
++
++#define SQUASHFS_COMPRESSED_BLOCK(B)		(!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK))
++
++/*
++ * Inode number ops.  Inodes consist of a compressed block number, and an uncompressed
++ * offset within that block
++ */
++#define SQUASHFS_INODE_BLK(a)		((unsigned int) ((a) >> 16))
++#define SQUASHFS_INODE_OFFSET(a)	((unsigned int) ((a) & 0xffff))
++#define SQUASHFS_MKINODE(A, B)		((squashfs_inode)(((squashfs_inode) (A) << 16)\
++					+ (B)))
++
++/* Compute 32 bit VFS inode number from squashfs inode number */
++#define SQUASHFS_MK_VFS_INODE(a, b)	((unsigned int) (((a) << 8) + ((b) >> 2) + 1))
++
++/* Translate between VFS mode and squashfs mode */
++#define SQUASHFS_MODE(a)		((a) & 0xfff)
++
++/* fragment and fragment table defines */
++typedef unsigned int			squashfs_fragment_index;
++#define SQUASHFS_FRAGMENT_BYTES(A)	(A * sizeof(squashfs_fragment_entry))
++#define SQUASHFS_FRAGMENT_INDEX(A)	(SQUASHFS_FRAGMENT_BYTES(A) / SQUASHFS_METADATA_SIZE)
++#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A)	(SQUASHFS_FRAGMENT_BYTES(A) % SQUASHFS_METADATA_SIZE)
++#define SQUASHFS_FRAGMENT_INDEXES(A)	((SQUASHFS_FRAGMENT_BYTES(A) + SQUASHFS_METADATA_SIZE - 1) / SQUASHFS_METADATA_SIZE)
++#define SQUASHFS_FRAGMENT_INDEX_BYTES(A)	(SQUASHFS_FRAGMENT_INDEXES(A) * sizeof(squashfs_fragment_index))
++
++/* cached data constants for filesystem */
++#define SQUASHFS_CACHED_BLKS		8
++
++#define SQUASHFS_MAX_FILE_SIZE_LOG	32
++#define SQUASHFS_MAX_FILE_SIZE		((long long) 1 << (SQUASHFS_MAX_FILE_SIZE_LOG - 1))
++
++#define SQUASHFS_MARKER_BYTE		0xff
++
++
++/*
++ * definitions for structures on disk
++ */
++
++typedef unsigned int		squashfs_block;
++typedef long long		squashfs_inode;
++
++typedef unsigned int		squashfs_uid;
++
++typedef struct squashfs_super_block {
++	unsigned int		s_magic;
++	unsigned int		inodes;
++	unsigned int		bytes_used;
++	unsigned int		uid_start;
++	unsigned int		guid_start;
++	unsigned int		inode_table_start;
++	unsigned int		directory_table_start;
++	unsigned int		s_major:16;
++	unsigned int		s_minor:16;
++	unsigned int		block_size_1:16;
++	unsigned int		block_log:16;
++	unsigned int		flags:8;
++	unsigned int		no_uids:8;
++	unsigned int		no_guids:8;
++	unsigned int		mkfs_time /* time of filesystem creation */;
++	squashfs_inode		root_inode;
++	unsigned int		block_size;
++	unsigned int		fragments;
++	unsigned int		fragment_table_start;
++} __attribute__ ((packed)) squashfs_super_block;
++
++typedef struct {
++	unsigned int		index:27;
++	unsigned int		start_block:29;
++	unsigned char		size;
++	unsigned char		name[0];
++} __attribute__ ((packed)) squashfs_dir_index;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++} __attribute__ ((packed)) squashfs_base_inode_header;
++
++typedef squashfs_base_inode_header squashfs_ipc_inode_header;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++	unsigned short		rdev;
++} __attribute__ ((packed)) squashfs_dev_inode_header;
++	
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++	unsigned short		symlink_size;
++	char			symlink[0];
++} __attribute__ ((packed)) squashfs_symlink_inode_header;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++	unsigned int		mtime;
++	squashfs_block		start_block;
++	unsigned int		fragment;
++	unsigned int		offset;
++	unsigned int		file_size:SQUASHFS_MAX_FILE_SIZE_LOG;
++	unsigned short		block_list[0];
++} __attribute__ ((packed)) squashfs_reg_inode_header;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++	unsigned int		file_size:19;
++	unsigned int		offset:13;
++	unsigned int		mtime;
++	unsigned int		start_block:24;
++} __attribute__  ((packed)) squashfs_dir_inode_header;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:8; /* index into uid table */
++	unsigned int		guid:8; /* index into guid table */
++	unsigned int		file_size:27;
++	unsigned int		offset:13;
++	unsigned int		mtime;
++	unsigned int		start_block:24;
++	unsigned int		i_count:16;
++	squashfs_dir_index	index[0];
++} __attribute__  ((packed)) squashfs_ldir_inode_header;
++
++typedef union {
++	squashfs_base_inode_header	base;
++	squashfs_dev_inode_header	dev;
++	squashfs_symlink_inode_header	symlink;
++	squashfs_reg_inode_header	reg;
++	squashfs_dir_inode_header	dir;
++	squashfs_ldir_inode_header	ldir;
++	squashfs_ipc_inode_header	ipc;
++} squashfs_inode_header;
++	
++typedef struct {
++	unsigned int		offset:13;
++	unsigned int		type:3;
++	unsigned int		size:8;
++	char			name[0];
++} __attribute__ ((packed)) squashfs_dir_entry;
++
++typedef struct {
++	unsigned int		count:8;
++	unsigned int		start_block:24;
++} __attribute__ ((packed)) squashfs_dir_header;
++
++typedef struct {
++	unsigned int		start_block;
++	unsigned int		size;
++} __attribute__ ((packed)) squashfs_fragment_entry;
++
++extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen);
++extern int squashfs_uncompress_init(void);
++extern int squashfs_uncompress_exit(void);
++
++/*
++ * macros to convert each packed bitfield structure from little endian to big
++ * endian and vice versa.  These are needed when creating or using a filesystem on a
++ * machine with different byte ordering to the target architecture.
++ *
++ */
++
++#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\
++	SQUASHFS_MEMSET(s, d, sizeof(squashfs_super_block));\
++	SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\
++	SQUASHFS_SWAP((s)->inodes, d, 32, 32);\
++	SQUASHFS_SWAP((s)->bytes_used, d, 64, 32);\
++	SQUASHFS_SWAP((s)->uid_start, d, 96, 32);\
++	SQUASHFS_SWAP((s)->guid_start, d, 128, 32);\
++	SQUASHFS_SWAP((s)->inode_table_start, d, 160, 32);\
++	SQUASHFS_SWAP((s)->directory_table_start, d, 192, 32);\
++	SQUASHFS_SWAP((s)->s_major, d, 224, 16);\
++	SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\
++	SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\
++	SQUASHFS_SWAP((s)->block_log, d, 272, 16);\
++	SQUASHFS_SWAP((s)->flags, d, 288, 8);\
++	SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\
++	SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\
++	SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\
++	SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\
++	SQUASHFS_SWAP((s)->block_size, d, 408, 32);\
++	SQUASHFS_SWAP((s)->fragments, d, 440, 32);\
++	SQUASHFS_SWAP((s)->fragment_table_start, d, 472, 32);\
++}
++
++#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\
++	SQUASHFS_MEMSET(s, d, n);\
++	SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
++	SQUASHFS_SWAP((s)->mode, d, 4, 12);\
++	SQUASHFS_SWAP((s)->uid, d, 16, 8);\
++	SQUASHFS_SWAP((s)->guid, d, 24, 8);\
++}
++
++#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_ipc_inode_header))
++
++#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dev_inode_header));\
++	SQUASHFS_SWAP((s)->rdev, d, 32, 16);\
++}
++
++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header));\
++	SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\
++}
++
++#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header));\
++	SQUASHFS_SWAP((s)->mtime, d, 32, 32);\
++	SQUASHFS_SWAP((s)->start_block, d, 64, 32);\
++	SQUASHFS_SWAP((s)->fragment, d, 96, 32);\
++	SQUASHFS_SWAP((s)->offset, d, 128, 32);\
++	SQUASHFS_SWAP((s)->file_size, d, 160, SQUASHFS_MAX_FILE_SIZE_LOG);\
++}
++
++#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header));\
++	SQUASHFS_SWAP((s)->file_size, d, 32, 19);\
++	SQUASHFS_SWAP((s)->offset, d, 51, 13);\
++	SQUASHFS_SWAP((s)->mtime, d, 64, 32);\
++	SQUASHFS_SWAP((s)->start_block, d, 96, 24);\
++}
++
++#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_ldir_inode_header));\
++	SQUASHFS_SWAP((s)->file_size, d, 32, 27);\
++	SQUASHFS_SWAP((s)->offset, d, 59, 13);\
++	SQUASHFS_SWAP((s)->mtime, d, 72, 32);\
++	SQUASHFS_SWAP((s)->start_block, d, 104, 24);\
++	SQUASHFS_SWAP((s)->i_count, d, 128, 16);\
++}
++
++#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\
++	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_index));\
++	SQUASHFS_SWAP((s)->index, d, 0, 27);\
++	SQUASHFS_SWAP((s)->start_block, d, 27, 29);\
++	SQUASHFS_SWAP((s)->size, d, 56, 8);\
++}
++
++#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\
++	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_header));\
++	SQUASHFS_SWAP((s)->count, d, 0, 8);\
++	SQUASHFS_SWAP((s)->start_block, d, 8, 24);\
++}
++
++#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\
++	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_entry));\
++	SQUASHFS_SWAP((s)->offset, d, 0, 13);\
++	SQUASHFS_SWAP((s)->type, d, 13, 3);\
++	SQUASHFS_SWAP((s)->size, d, 16, 8);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\
++	SQUASHFS_MEMSET(s, d, sizeof(squashfs_fragment_entry));\
++	SQUASHFS_SWAP((s)->start_block, d, 0, 32);\
++	SQUASHFS_SWAP((s)->size, d, 32, 32);\
++}
++
++#define SQUASHFS_SWAP_SHORTS(s, d, n) {\
++	int entry;\
++	int bit_position;\
++	SQUASHFS_MEMSET(s, d, n * 2);\
++	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 16)\
++		SQUASHFS_SWAP(s[entry], d, bit_position, 16);\
++}
++
++#define SQUASHFS_SWAP_INTS(s, d, n) {\
++	int entry;\
++	int bit_position;\
++	SQUASHFS_MEMSET(s, d, n * 4);\
++	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 32)\
++		SQUASHFS_SWAP(s[entry], d, bit_position, 32);\
++}
++
++#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\
++	int entry;\
++	int bit_position;\
++	SQUASHFS_MEMSET(s, d, n * bits / 8);\
++	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += bits)\
++		SQUASHFS_SWAP(s[entry], d, bit_position, bits);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_INTS(s, d, n)
++
++#ifdef SQUASHFS_1_0_COMPATIBILITY
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++} __attribute__ ((packed)) squashfs_base_inode_header_1;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++	unsigned int		type:4;
++	unsigned int		offset:4;
++} __attribute__ ((packed)) squashfs_ipc_inode_header_1;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++	unsigned short		rdev;
++} __attribute__ ((packed)) squashfs_dev_inode_header_1;
++	
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++	unsigned short		symlink_size;
++	char			symlink[0];
++} __attribute__ ((packed)) squashfs_symlink_inode_header_1;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++	unsigned int		mtime;
++	squashfs_block		start_block;
++	unsigned int		file_size:SQUASHFS_MAX_FILE_SIZE_LOG;
++	unsigned short		block_list[0];
++} __attribute__ ((packed)) squashfs_reg_inode_header_1;
++
++typedef struct {
++	unsigned int		inode_type:4;
++	unsigned int		mode:12; /* protection */
++	unsigned int		uid:4; /* index into uid table */
++	unsigned int		guid:4; /* index into guid table */
++	unsigned int		file_size:19;
++	unsigned int		offset:13;
++	unsigned int		mtime;
++	unsigned int		start_block:24;
++} __attribute__  ((packed)) squashfs_dir_inode_header_1;
++
++#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\
++	SQUASHFS_MEMSET(s, d, n);\
++	SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
++	SQUASHFS_SWAP((s)->mode, d, 4, 12);\
++	SQUASHFS_SWAP((s)->uid, d, 16, 4);\
++	SQUASHFS_SWAP((s)->guid, d, 20, 4);\
++}
++
++#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_ipc_inode_header_1));\
++	SQUASHFS_SWAP((s)->type, d, 24, 4);\
++	SQUASHFS_SWAP((s)->offset, d, 28, 4);\
++}
++
++#define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_dev_inode_header_1));\
++	SQUASHFS_SWAP((s)->rdev, d, 24, 16);\
++}
++
++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header_1));\
++	SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\
++}
++
++#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header_1));\
++	SQUASHFS_SWAP((s)->mtime, d, 24, 32);\
++	SQUASHFS_SWAP((s)->start_block, d, 56, 32);\
++	SQUASHFS_SWAP((s)->file_size, d, 88, SQUASHFS_MAX_FILE_SIZE_LOG);\
++}
++
++#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\
++	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header_1));\
++	SQUASHFS_SWAP((s)->file_size, d, 24, 19);\
++	SQUASHFS_SWAP((s)->offset, d, 43, 13);\
++	SQUASHFS_SWAP((s)->mtime, d, 56, 32);\
++	SQUASHFS_SWAP((s)->start_block, d, 88, 24);\
++}
++#endif
++
++#ifdef __KERNEL__
++/*
++ * macros used to swap each structure entry, taking into account
++ * bitfields and different bitfield placing conventions on differing architectures
++ */
++#include <asm/byteorder.h>
++#ifdef __BIG_ENDIAN
++	/* convert from little endian to big endian */
++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, b_pos)
++#else
++	/* convert from big endian to little endian */ 
++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, 64 - tbits - b_pos)
++#endif
++
++#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\
++	int bits;\
++	int b_pos = pos % 8;\
++	unsigned long long val = 0;\
++	unsigned char *s = (unsigned char *)p + (pos / 8);\
++	unsigned char *d = ((unsigned char *) &val) + 7;\
++	for(bits = 0; bits < (tbits + b_pos); bits += 8) \
++		*d-- = *s++;\
++	value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\
++}
++#define SQUASHFS_MEMSET(s, d, n)	memset(s, 0, n);
++#endif
++#endif
+diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs_i.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_i.h
+--- linux-2.6.12/include/linux/squashfs_fs_i.h	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_i.h	2005-07-04 02:35:35.000000000 +0100
+@@ -0,0 +1,43 @@
++#ifndef SQUASHFS_FS_I
++#define SQUASHFS_FS_I
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
++ *
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs_i.h
++ */
++
++typedef struct squashfs_inode_info {
++	unsigned int	start_block;
++	unsigned int	block_list_start;
++	unsigned int	offset;
++	union {
++		struct {
++			unsigned int	fragment_start_block;
++			unsigned int	fragment_size;
++			unsigned int	fragment_offset;
++		} s1;
++		struct {
++			unsigned int	directory_index_start;
++			unsigned int	directory_index_offset;
++			unsigned int	directory_index_count;
++		} s2;
++	} u;
++	struct inode	vfs_inode;
++	} squashfs_inode_info;
++#endif
+diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs_sb.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_sb.h
+--- linux-2.6.12/include/linux/squashfs_fs_sb.h	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_sb.h	2005-07-04 02:35:35.000000000 +0100
+@@ -0,0 +1,65 @@
++#ifndef SQUASHFS_FS_SB
++#define SQUASHFS_FS_SB
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
++ *
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs_sb.h
++ */
++
++#include <linux/squashfs_fs.h>
++
++typedef struct {
++	unsigned int	block;
++	int		length;
++	unsigned int	next_index;
++	char		*data;
++	} squashfs_cache;
++
++struct squashfs_fragment_cache {
++	unsigned int	block;
++	int		length;
++	unsigned int	locked;
++	char		*data;
++	};
++
++typedef struct squashfs_sb_info {
++	squashfs_super_block	sBlk;
++	int			devblksize;
++	int			devblksize_log2;
++	int			swap;
++	squashfs_cache		*block_cache;
++	struct squashfs_fragment_cache	*fragment;
++	int			next_cache;
++	int			next_fragment;
++	squashfs_uid		*uid;
++	squashfs_uid		*guid;
++	squashfs_fragment_index		*fragment_index;
++	unsigned int		read_size;
++	char			*read_data;
++	char			*read_page;
++	struct semaphore	read_page_mutex;
++	struct semaphore	block_cache_mutex;
++	struct semaphore	fragment_mutex;
++	wait_queue_head_t	waitq;
++	wait_queue_head_t	fragment_wait_queue;
++	struct inode		*(*iget)(struct super_block *s, squashfs_inode inode);
++	unsigned int		(*read_blocklist)(struct inode *inode, int index, int readahead_blks,
++					char *block_list, unsigned short **block_p, unsigned int *bsize);
++	} squashfs_sb_info;
++#endif
+diff --new-file -urp linux-2.6.12/init/do_mounts_rd.c linux-2.6.12-squashfs2.2/init/do_mounts_rd.c
+--- linux-2.6.12/init/do_mounts_rd.c	2005-06-17 20:48:29.000000000 +0100
++++ linux-2.6.12-squashfs2.2/init/do_mounts_rd.c	2005-07-04 02:35:35.000000000 +0100
+@@ -5,6 +5,7 @@
+ #include <linux/ext2_fs.h>
+ #include <linux/romfs_fs.h>
+ #include <linux/cramfs_fs.h>
++#include <linux/squashfs_fs.h>
+ #include <linux/initrd.h>
+ #include <linux/string.h>
+ 
+@@ -39,6 +40,7 @@ static int __init crd_load(int in_fd, in
+  * numbers could not be found.
+  *
+  * We currently check for the following magic numbers:
++ *      squashfs
+  * 	minix
+  * 	ext2
+  *	romfs
+@@ -53,6 +55,7 @@ identify_ramdisk_image(int fd, int start
+ 	struct ext2_super_block *ext2sb;
+ 	struct romfs_super_block *romfsb;
+ 	struct cramfs_super *cramfsb;
++	struct squashfs_super_block *squashfsb;
+ 	int nblocks = -1;
+ 	unsigned char *buf;
+ 
+@@ -64,6 +67,7 @@ identify_ramdisk_image(int fd, int start
+ 	ext2sb = (struct ext2_super_block *) buf;
+ 	romfsb = (struct romfs_super_block *) buf;
+ 	cramfsb = (struct cramfs_super *) buf;
++	squashfsb = (struct squashfs_super_block *) buf;
+ 	memset(buf, 0xe5, size);
+ 
+ 	/*
+@@ -101,6 +105,15 @@ identify_ramdisk_image(int fd, int start
+ 		goto done;
+ 	}
+ 
++	/* squashfs is at block zero too */
++	if (squashfsb->s_magic == SQUASHFS_MAGIC) {
++		printk(KERN_NOTICE
++		       "RAMDISK: squashfs filesystem found at block %d\n",
++		       start_block);
++		nblocks = (squashfsb->bytes_used+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
++		goto done;
++	}
++
+ 	/*
+ 	 * Read block 1 to test for minix and ext2 superblock
+ 	 */