Warning!

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/2.6.25/4000_ipw2200-1.1.4-inject.patch	Sun Mar 09 00:35:19 2008 +0000
@@ -0,0 +1,90 @@
+From 805fa07d7f45a5634d311d0b3d8c0c071c8cfbf2 Mon Sep 17 00:00:00 2001
+From: Michael Prokop <mika@grml.org>
+Date: Sat, 8 Mar 2008 15:27:58 +0000
+Subject: [PATCH 2/4] Apply 4000_ipw2200-1.1.4-inject.patch
+
+
+Signed-off-by: Michael Prokop <mika@grml.org>
+
+diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
+index a56d9fc..4b43fc8 100644
+--- a/drivers/net/wireless/ipw2200.c
++++ b/drivers/net/wireless/ipw2200.c
+@@ -1906,6 +1906,66 @@ static ssize_t show_channels(struct device *d,
+ 
+ static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
+ 
++static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb, int pri);
++
++/* SYSFS INJECT */
++static ssize_t store_inject(struct device *d,
++#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
++	struct device_attribute *attr,
++#endif
++	const char *buf, size_t count) 
++{
++	struct ipw_priv *priv = (struct ipw_priv *)d->driver_data;
++	struct ieee80211_device *ieee = priv->ieee;
++	struct ieee80211_txb * txb;
++	struct sk_buff *skb_frag;
++	unsigned char * newbuf;
++	unsigned long flags;
++
++	// should test (ieee->is_queue_full) 
++	
++	// Fw only accepts data, so avoid accidental fw errors.
++	if ( (buf[0]&0x0c) != '\x08') {
++		//printk("ipw2200: inject: discarding non-data frame (type=%02X)\n",(int)(unsigned char)buf[0]);
++		return count;
++	}
++
++	if (count>1500) {
++		count=1500;
++		printk("ipw2200: inject: cutting down frame to 1500 bytes\n");
++	}
++	
++	spin_lock_irqsave(&priv->lock, flags);
++
++	// Create a txb with one skb
++	txb = kmalloc(sizeof(struct ieee80211_txb) + sizeof(u8 *), GFP_ATOMIC);
++	if (!txb)
++		goto nosepuede;
++	txb->nr_frags=1;
++	txb->frag_size = ieee->tx_headroom;
++	txb->fragments[0]=__dev_alloc_skb(count + ieee->tx_headroom, GFP_ATOMIC);
++	if (!txb->fragments[0]) {
++		kfree(txb);
++		goto nosepuede;
++	}
++	skb_reserve(txb->fragments[0], ieee->tx_headroom);
++	txb->encrypted=0;
++	txb->payload_size=count;
++	skb_frag = txb->fragments[0];
++	newbuf=skb_put(skb_frag, count);
++
++	// copy data into txb->skb and send it
++	memcpy(newbuf, buf, count);
++	
++	ipw_tx_skb(priv, txb, 0);
++
++nosepuede:
++	spin_unlock_irqrestore(&priv->lock, flags);
++	return count;
++}
++
++static DEVICE_ATTR(inject, S_IWUSR, NULL, store_inject);
++
+ static void notify_wx_assoc_event(struct ipw_priv *priv)
+ {
+ 	union iwreq_data wrqu;
+@@ -11497,6 +11557,7 @@ static struct attribute *ipw_sysfs_entries[] = {
+ #ifdef CONFIG_IPW2200_PROMISCUOUS
+ 	&dev_attr_rtap_iface.attr,
+ 	&dev_attr_rtap_filter.attr,
++	&dev_attr_inject.attr,
+ #endif
+ 	NULL
+ };
+-- 
+1.5.4.3
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/2.6.25/4300_squashfs-3.3-for-2.6.25.patch	Sun Mar 09 00:35:19 2008 +0000
@@ -0,0 +1,4229 @@
+From d1eb4b6c0a6eab1cf2df15581f6a372908693ce7 Mon Sep 17 00:00:00 2001
+From: Michael Prokop <mika@grmlvrs.(none)>
+Date: Sat, 8 Mar 2008 15:21:14 +0000
+Subject: [PATCH 1/4] SquashFS for 2.6.25-rc4
+
+Apply patch from
+http://sourceforge.net/mailarchive/forum.php?thread_name=47C5A849.1020309%40intellitree.com&forum_name=squashfs-devel
+
+Signed-off-by: Michael Prokop <mika@grml.org>
+
+diff --git a/fs/Kconfig b/fs/Kconfig
+index d731282..cab44a1 100644
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -1367,6 +1367,56 @@ config CRAMFS
+ 
+ 	  If unsure, say N.
+ 
++config SQUASHFS
++	tristate "SquashFS 3.3 - Squashed file system support"
++	select ZLIB_INFLATE
++	help
++	  Saying Y here includes support for SquashFS 3.3 (a 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 1 Mbytes (default
++	  block size 128K).  SquashFS 3.3 supports 64 bit filesystems and files
++	  (larger than 4GB), full uid/gid information, hard links and timestamps.  
++
++	  Squashfs is intended for general read-only filesystem use, for
++	  archival use (i.e. in cases where a .tar.gz file may be used), and in
++	  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 option for memory-constrained systems" 
++	depends on SQUASHFS
++	default n
++	help
++	  Saying Y here allows you to specify cache size.
++
++	  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 VXFS_FS
+ 	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
+ 	depends on BLOCK
+diff --git a/fs/Makefile b/fs/Makefile
+index 1e7a11b..3faf857 100644
+--- a/fs/Makefile
++++ b/fs/Makefile
+@@ -73,6 +73,7 @@ obj-$(CONFIG_JBD)		+= jbd/
+ obj-$(CONFIG_JBD2)		+= jbd2/
+ obj-$(CONFIG_EXT2_FS)		+= ext2/
+ obj-$(CONFIG_CRAMFS)		+= cramfs/
++obj-$(CONFIG_SQUASHFS)		+= squashfs/
+ obj-y				+= ramfs/
+ obj-$(CONFIG_HUGETLBFS)		+= hugetlbfs/
+ obj-$(CONFIG_CODA_FS)		+= coda/
+diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile
+new file mode 100644
+index 0000000..1bc7b06
+--- /dev/null
++++ b/fs/squashfs/Makefile
+@@ -0,0 +1,7 @@
++#
++# Makefile for the linux squashfs routines.
++#
++
++obj-$(CONFIG_SQUASHFS) += squashfs.o
++squashfs-y += inode.o
++squashfs-y += squashfs2_0.o
+diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c
+new file mode 100644
+index 0000000..463539a
+--- /dev/null
++++ b/fs/squashfs/inode.c
+@@ -0,0 +1,2157 @@
++/*
++ * Squashfs - a compressed read only filesystem for Linux
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
++ * 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
++ */
++
++#include <linux/squashfs_fs.h>
++#include <linux/module.h>
++#include <linux/zlib.h>
++#include <linux/fs.h>
++#include <linux/squashfs_fs_sb.h>
++#include <linux/squashfs_fs_i.h>
++#include <linux/buffer_head.h>
++#include <linux/exportfs.h>
++#include <linux/vfs.h>
++#include <linux/vmalloc.h>
++#include <linux/smp_lock.h>
++#include <linux/exportfs.h>
++
++#include "squashfs.h"
++
++int squashfs_cached_blks;
++
++static struct dentry *squashfs_get_parent(struct dentry *child);
++static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode);
++static int squashfs_statfs(struct dentry *, struct kstatfs *);
++static int squashfs_symlink_readpage(struct file *file, struct page *page);
++static long long read_blocklist(struct inode *inode, int index,
++				int readahead_blks, char *block_list,
++				unsigned short **block_p, unsigned int *bsize);
++static int squashfs_readpage(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 int squashfs_remount(struct super_block *s, int *flags, char *data);
++static void squashfs_put_super(struct super_block *);
++static int squashfs_get_sb(struct file_system_type *,int, const char *, void *,
++				struct vfsmount *);
++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);
++
++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 const 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_super_ops = {
++	.alloc_inode = squashfs_alloc_inode,
++	.destroy_inode = squashfs_destroy_inode,
++	.statfs = squashfs_statfs,
++	.put_super = squashfs_put_super,
++	.remount_fs = squashfs_remount
++};
++
++static struct super_operations squashfs_export_super_ops = {
++	.alloc_inode = squashfs_alloc_inode,
++	.destroy_inode = squashfs_destroy_inode,
++	.statfs = squashfs_statfs,
++	.put_super = squashfs_put_super,
++};
++
++static struct export_operations squashfs_export_ops = {
++	.get_parent = squashfs_get_parent
++};
++
++SQSH_EXTERN const struct address_space_operations squashfs_symlink_aops = {
++	.readpage = squashfs_symlink_readpage
++};
++
++SQSH_EXTERN const struct address_space_operations squashfs_aops = {
++	.readpage = squashfs_readpage
++};
++
++static const struct file_operations squashfs_dir_ops = {
++	.read = generic_read_dir,
++	.readdir = squashfs_readdir
++};
++
++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = {
++	.lookup = squashfs_lookup
++};
++
++
++static struct buffer_head *get_block_length(struct super_block *s,
++				int *cur_index, int *offset, int *c_byte)
++{
++	struct 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;
++}
++
++
++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer,
++			long long index, unsigned int length,
++			long long *next_index, int srclength)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++	struct buffer_head **bh;
++	unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1);
++	unsigned int cur_index = index >> msblk->devblksize_log2;
++	int bytes, avail_bytes, b = 0, k = 0;
++	unsigned int compressed;
++	unsigned int c_byte = length;
++
++	bh = kmalloc(((sblk->block_size >> msblk->devblksize_log2) + 1) *
++								sizeof(struct buffer_head *), GFP_KERNEL);
++	if (bh == NULL)
++		goto read_failure;
++
++	if (c_byte) {
++		bytes = msblk->devblksize - offset;
++		compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte);
++		c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
++
++		TRACE("Block @ 0x%llx, %scompressed size %d, src size %d\n", index,
++					compressed ? "" : "un", (unsigned int) c_byte, srclength);
++
++		if (c_byte > srclength || index < 0 || (index + c_byte) > sblk->bytes_used)
++			goto read_failure;
++
++		bh[0] = sb_getblk(s, cur_index);
++		if (bh[0] == NULL)
++			goto block_release;
++
++		for (b = 1; bytes < c_byte; b++) {
++			bh[b] = sb_getblk(s, ++cur_index);
++			if (bh[b] == NULL)
++				goto block_release;
++			bytes += msblk->devblksize;
++		}
++		ll_rw_block(READ, b, bh);
++	} else {
++		if (index < 0 || (index + 2) > sblk->bytes_used)
++			goto read_failure;
++
++		bh[0] = get_block_length(s, &cur_index, &offset, &c_byte);
++		if (bh[0] == NULL)
++			goto read_failure;
++
++		bytes = msblk->devblksize - offset;
++		compressed = SQUASHFS_COMPRESSED(c_byte);
++		c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte);
++
++		TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed
++					? "" : "un", (unsigned int) c_byte);
++
++		if (c_byte > srclength || (index + c_byte) > sblk->bytes_used)
++			goto read_failure;
++
++		for (b = 1; bytes < c_byte; b++) {
++			bh[b] = sb_getblk(s, ++cur_index);
++			if (bh[b] == NULL)
++				goto block_release;
++			bytes += msblk->devblksize;
++		}
++		ll_rw_block(READ, b - 1, bh + 1);
++	}
++
++	if (compressed) {
++		int zlib_err = 0;
++
++		/*
++	 	* uncompress block
++	 	*/
++
++		mutex_lock(&msblk->read_data_mutex);
++
++		msblk->stream.next_out = buffer;
++		msblk->stream.avail_out = srclength;
++
++		for (bytes = 0; k < b; k++) {
++			avail_bytes = min(c_byte - bytes, msblk->devblksize - offset);
++
++			wait_on_buffer(bh[k]);
++			if (!buffer_uptodate(bh[k]))
++				goto release_mutex;
++
++			msblk->stream.next_in = bh[k]->b_data + offset;
++			msblk->stream.avail_in = avail_bytes;
++
++			if (k == 0) {
++				zlib_err = zlib_inflateInit(&msblk->stream);
++				if (zlib_err != Z_OK) {
++					ERROR("zlib_inflateInit returned unexpected result 0x%x,"
++						" srclength %d\n", zlib_err, srclength);
++					goto release_mutex;
++				}
++
++				if (avail_bytes == 0) {
++					offset = 0;
++					brelse(bh[k]);
++					continue;
++				}
++			}
++
++			zlib_err = zlib_inflate(&msblk->stream, Z_NO_FLUSH);
++			if (zlib_err != Z_OK && zlib_err != Z_STREAM_END) {
++				ERROR("zlib_inflate returned unexpected result 0x%x,"
++					" srclength %d, avail_in %d, avail_out %d\n", zlib_err,
++					srclength, msblk->stream.avail_in, msblk->stream.avail_out);
++				goto release_mutex;
++			}
++
++			bytes += avail_bytes;
++			offset = 0;
++			brelse(bh[k]);
++		}
++
++		if (zlib_err != Z_STREAM_END)
++			goto release_mutex;
++
++		zlib_err = zlib_inflateEnd(&msblk->stream);
++		if (zlib_err != Z_OK) {
++			ERROR("zlib_inflateEnd returned unexpected result 0x%x,"
++				" srclength %d\n", zlib_err, srclength);
++			goto release_mutex;
++		}
++		bytes = msblk->stream.total_out;
++		mutex_unlock(&msblk->read_data_mutex);
++	} else {
++		int i;
++
++		for(i = 0; i < b; i++) {
++			wait_on_buffer(bh[i]);
++			if (!buffer_uptodate(bh[i]))
++				goto block_release;
++		}
++
++		for (bytes = 0; k < b; k++) {
++			avail_bytes = min(c_byte - bytes, msblk->devblksize - offset);
++
++			memcpy(buffer + bytes, bh[k]->b_data + offset, avail_bytes);
++			bytes += avail_bytes;
++			offset = 0;
++			brelse(bh[k]);
++		}
++	}
++
++	if (next_index)
++		*next_index = index + c_byte + (length ? 0 :
++				(SQUASHFS_CHECK_DATA(msblk->sblk.flags) ? 3 : 2));
++
++	kfree(bh);
++	return bytes;
++
++release_mutex:
++	mutex_unlock(&msblk->read_data_mutex);
++
++block_release:
++	for (; k < b; k++)
++		brelse(bh[k]);
++
++read_failure:
++	ERROR("sb_bread failed reading block 0x%x\n", cur_index);
++	kfree(bh);
++	return 0;
++}
++
++
++SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, void *buffer,
++				long long block, unsigned int offset,
++				int length, long long *next_block,
++				unsigned int *next_offset)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	int n, i, bytes, return_length = length;
++	long long next_index;
++
++	TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset);
++
++	while (1) {
++		for (i = 0; i < squashfs_cached_blks; i++) 
++			if (msblk->block_cache[i].block == block)
++				break; 
++		
++		mutex_lock(&msblk->block_cache_mutex);
++
++		if (i == squashfs_cached_blks) {
++			/* read inode header block */
++			if (msblk->unused_cache_blks == 0) {
++				mutex_unlock(&msblk->block_cache_mutex);
++				wait_event(msblk->waitq, msblk->unused_cache_blks);
++				continue;
++			}
++
++			i = msblk->next_cache;
++			for (n = 0; n < squashfs_cached_blks; n++) {
++				if (msblk->block_cache[i].block != SQUASHFS_USED_BLK)
++					break;
++				i = (i + 1) % squashfs_cached_blks;
++			}
++
++			msblk->next_cache = (i + 1) % squashfs_cached_blks;
++
++			if (msblk->block_cache[i].block == SQUASHFS_INVALID_BLK) {
++				msblk->block_cache[i].data = vmalloc(SQUASHFS_METADATA_SIZE);
++				if (msblk->block_cache[i].data == NULL) {
++					ERROR("Failed to allocate cache block\n");
++					mutex_unlock(&msblk->block_cache_mutex);
++					goto out;
++				}
++			}
++	
++			msblk->block_cache[i].block = SQUASHFS_USED_BLK;
++			msblk->unused_cache_blks --;
++			mutex_unlock(&msblk->block_cache_mutex);
++
++			msblk->block_cache[i].length = squashfs_read_data(s,
++				msblk->block_cache[i].data, block, 0, &next_index,
++				SQUASHFS_METADATA_SIZE);
++
++			if (msblk->block_cache[i].length == 0) {
++				ERROR("Unable to read cache block [%llx:%x]\n", block, offset);
++				mutex_lock(&msblk->block_cache_mutex);
++				msblk->block_cache[i].block = SQUASHFS_INVALID_BLK;
++				msblk->unused_cache_blks ++;
++				smp_mb();
++				vfree(msblk->block_cache[i].data);
++				wake_up(&msblk->waitq);
++				mutex_unlock(&msblk->block_cache_mutex);
++				goto out;
++			}
++
++			mutex_lock(&msblk->block_cache_mutex);
++			msblk->block_cache[i].block = block;
++			msblk->block_cache[i].next_index = next_index;
++			msblk->unused_cache_blks ++;
++			smp_mb();
++			wake_up(&msblk->waitq);
++			TRACE("Read cache block [%llx:%x]\n", block, offset);
++		}
++
++		if (msblk->block_cache[i].block != block) {
++			mutex_unlock(&msblk->block_cache_mutex);
++			continue;
++		}
++
++		bytes = msblk->block_cache[i].length - offset;
++
++		if (bytes < 1) {
++			mutex_unlock(&msblk->block_cache_mutex);
++			goto out;
++		} else if (bytes >= 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;
++			}
++			mutex_unlock(&msblk->block_cache_mutex);
++			goto finish;
++		} else {
++			if (buffer) {
++				memcpy(buffer, msblk->block_cache[i].data + offset, bytes);
++				buffer = (char *) buffer + bytes;
++			}
++			block = msblk->block_cache[i].next_index;
++			mutex_unlock(&msblk->block_cache_mutex);
++			length -= bytes;
++			offset = 0;
++		}
++	}
++
++finish:
++	return return_length;
++out:
++	return 0;
++}
++
++
++static int get_fragment_location(struct super_block *s, unsigned int fragment,
++				long long *fragment_start_block,
++				unsigned int *fragment_size)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	long long start_block =
++		msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)];
++	int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment);
++	struct squashfs_fragment_entry fragment_entry;
++
++	if (msblk->swap) {
++		struct squashfs_fragment_entry sfragment_entry;
++
++		if (!squashfs_get_cached_block(s, &sfragment_entry, start_block, offset,
++					 sizeof(sfragment_entry), &start_block, &offset))
++			goto out;
++		SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry);
++	} else
++		if (!squashfs_get_cached_block(s, &fragment_entry, start_block, offset,
++					 sizeof(fragment_entry), &start_block, &offset))
++			goto out;
++
++	*fragment_start_block = fragment_entry.start_block;
++	*fragment_size = fragment_entry.size;
++
++	return 1;
++
++out:
++	return 0;
++}
++
++
++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk,
++				struct squashfs_fragment_cache *fragment)
++{
++	mutex_lock(&msblk->fragment_mutex);
++	fragment->locked --;
++	if (fragment->locked == 0) {
++		msblk->unused_frag_blks ++;
++		smp_mb();
++		wake_up(&msblk->fragment_wait_queue);
++	}
++	mutex_unlock(&msblk->fragment_mutex);
++}
++
++
++SQSH_EXTERN
++struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s,
++				long long start_block, int length)
++{
++	int i, n;
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++
++	while (1) {
++		mutex_lock(&msblk->fragment_mutex);
++
++		for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS &&
++				msblk->fragment[i].block != start_block; i++);
++
++		if (i == SQUASHFS_CACHED_FRAGMENTS) {
++			if (msblk->unused_frag_blks == 0) {
++				mutex_unlock(&msblk->fragment_mutex);
++				wait_event(msblk->fragment_wait_queue, msblk->unused_frag_blks);
++				continue;
++			}
++
++			i = msblk->next_fragment;
++			for (n = 0; n < SQUASHFS_CACHED_FRAGMENTS; n++) {
++				if (msblk->fragment[i].locked == 0)
++					break;
++				i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS;
++			}
++
++			msblk->next_fragment = (msblk->next_fragment + 1) %
++				SQUASHFS_CACHED_FRAGMENTS;
++			
++			if (msblk->fragment[i].data == NULL) {
++				msblk->fragment[i].data = vmalloc(sblk->block_size);
++				if (msblk->fragment[i].data == NULL) {
++					ERROR("Failed to allocate fragment cache block\n");
++					mutex_unlock(&msblk->fragment_mutex);
++					goto out;
++				}
++			}
++
++			msblk->unused_frag_blks --;
++			msblk->fragment[i].block = SQUASHFS_INVALID_BLK;
++			msblk->fragment[i].locked = 1;
++			mutex_unlock(&msblk->fragment_mutex);
++
++			msblk->fragment[i].length = squashfs_read_data(s,
++				msblk->fragment[i].data, start_block, length, NULL,
++				sblk->block_size);
++
++			if (msblk->fragment[i].length == 0) {
++				ERROR("Unable to read fragment cache block [%llx]\n", start_block);
++				msblk->fragment[i].locked = 0;
++				msblk->unused_frag_blks ++;
++				smp_mb();
++				wake_up(&msblk->fragment_wait_queue);
++				goto out;
++			}
++
++			mutex_lock(&msblk->fragment_mutex);
++			msblk->fragment[i].block = start_block;
++			TRACE("New fragment %d, start block %lld, locked %d\n",
++				i, msblk->fragment[i].block, msblk->fragment[i].locked);
++			mutex_unlock(&msblk->fragment_mutex);
++			break;
++		}
++
++		if (msblk->fragment[i].locked == 0)
++			msblk->unused_frag_blks --;
++		msblk->fragment[i].locked++;
++		mutex_unlock(&msblk->fragment_mutex);
++		TRACE("Got fragment %d, start block %lld, locked %d\n", i,
++			msblk->fragment[i].block, msblk->fragment[i].locked);
++		break;
++	}
++
++	return &msblk->fragment[i];
++
++out:
++	return NULL;
++}
++
++
++static void squashfs_new_inode(struct squashfs_sb_info *msblk, struct inode *i,
++				struct squashfs_base_inode_header *inodeb)
++{
++	i->i_ino = inodeb->inode_number;
++	i->i_mtime.tv_sec = inodeb->mtime;
++	i->i_atime.tv_sec = inodeb->mtime;
++	i->i_ctime.tv_sec = inodeb->mtime;
++	i->i_uid = msblk->uid[inodeb->uid];
++	i->i_mode = inodeb->mode;
++	i->i_size = 0;
++
++	if (inodeb->guid == SQUASHFS_GUIDS)
++		i->i_gid = i->i_uid;
++	else
++		i->i_gid = msblk->guid[inodeb->guid];
++}
++	
++
++static struct dentry *squashfs_get_parent(struct dentry *child)
++{
++	struct inode *i = child->d_inode;
++	struct inode *parent = iget_locked(i->i_sb, SQUASHFS_I(i)->u.s2.parent_inode);
++	struct dentry *rv;
++
++	TRACE("Entered squashfs_get_parent\n");
++
++	if(parent == NULL) {
++		rv = ERR_PTR(-EACCES);
++		goto out;
++	}
++
++	rv = d_alloc_anon(parent);
++	if(parent->i_state & I_NEW) {
++		unlock_new_inode(parent);
++	}
++
++	if(rv == NULL)
++		rv = ERR_PTR(-ENOMEM);
++
++out:
++	return rv;
++}
++
++	
++SQSH_EXTERN struct inode *squashfs_iget(struct super_block *s,
++				squashfs_inode_t inode, unsigned int inode_number)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct inode *i = iget_locked(s, inode_number);
++
++	TRACE("Entered squashfs_iget\n");
++
++	if(!i)
++		return ERR_PTR(-ENOMEM);
++
++	if(i && (i->i_state & I_NEW)) {
++		(msblk->read_inode)(i, inode);
++		unlock_new_inode(i);
++	}
++
++	return i;
++}
++
++
++static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode)
++{
++	struct super_block *s = i->i_sb;
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++	long long block = SQUASHFS_INODE_BLK(inode) + sblk->inode_table_start;
++	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
++	long long next_block;
++	unsigned int next_offset;
++	union squashfs_inode_header id, sid;
++	struct squashfs_base_inode_header *inodeb = &id.base, *sinodeb = &sid.base;
++
++	TRACE("Entered squashfs_read_inode\n");
++
++	if (msblk->swap) {
++		if (!squashfs_get_cached_block(s, 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, inodeb, block, offset,
++					sizeof(*inodeb), &next_block, &next_offset))
++			goto failed_read;
++
++	squashfs_new_inode(msblk, i, inodeb);
++
++	switch(inodeb->inode_type) {
++		case SQUASHFS_FILE_TYPE: {
++			unsigned int frag_size;
++			long long frag_blk;
++			struct squashfs_reg_inode_header *inodep = &id.reg;
++			struct squashfs_reg_inode_header *sinodep = &sid.reg;
++				
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, 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, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			frag_blk = SQUASHFS_INVALID_BLK;
++
++			if (inodep->fragment != SQUASHFS_INVALID_FRAG)
++					if(!get_fragment_location(s, inodep->fragment, &frag_blk,
++												&frag_size))
++						goto failed_read;
++				
++			i->i_nlink = 1;
++			i->i_size = inodep->file_size;
++			i->i_fop = &generic_ro_fops;
++			i->i_mode |= S_IFREG;
++			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++			SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk;
++			SQUASHFS_I(i)->u.s1.fragment_size = frag_size;
++			SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset;
++			SQUASHFS_I(i)->start_block = inodep->start_block;
++			SQUASHFS_I(i)->u.s1.block_list_start = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			i->i_data.a_ops = &squashfs_aops;
++
++			TRACE("File inode %x:%x, start_block %llx, "
++					"block_list_start %llx, offset %x\n",
++					SQUASHFS_INODE_BLK(inode), offset,
++					inodep->start_block, next_block,
++					next_offset);
++			break;
++		}
++		case SQUASHFS_LREG_TYPE: {
++			unsigned int frag_size;
++			long long frag_blk;
++			struct squashfs_lreg_inode_header *inodep = &id.lreg;
++			struct squashfs_lreg_inode_header *sinodep = &sid.lreg;
++				
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, sinodep, block, offset,
++						sizeof(*sinodep), &next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep);
++			} else
++				if (!squashfs_get_cached_block(s, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			frag_blk = SQUASHFS_INVALID_BLK;
++
++			if (inodep->fragment != SQUASHFS_INVALID_FRAG)
++				if (!get_fragment_location(s, inodep->fragment, &frag_blk,
++												 &frag_size))
++					goto failed_read;
++				
++			i->i_nlink = inodep->nlink;
++			i->i_size = inodep->file_size;
++			i->i_fop = &generic_ro_fops;
++			i->i_mode |= S_IFREG;
++			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++			SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk;
++			SQUASHFS_I(i)->u.s1.fragment_size = frag_size;
++			SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset;
++			SQUASHFS_I(i)->start_block = inodep->start_block;
++			SQUASHFS_I(i)->u.s1.block_list_start = next_block;
++			SQUASHFS_I(i)->offset = next_offset;
++			i->i_data.a_ops = &squashfs_aops;
++
++			TRACE("File inode %x:%x, start_block %llx, "
++					"block_list_start %llx, offset %x\n",
++					SQUASHFS_INODE_BLK(inode), offset,
++					inodep->start_block, next_block,
++					next_offset);
++			break;
++		}
++		case SQUASHFS_DIR_TYPE: {
++			struct squashfs_dir_inode_header *inodep = &id.dir;
++			struct squashfs_dir_inode_header *sinodep = &sid.dir;
++
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, 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, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			i->i_nlink = inodep->nlink;
++			i->i_size = inodep->file_size;
++			i->i_op = &squashfs_dir_inode_ops;
++			i->i_fop = &squashfs_dir_ops;
++			i->i_mode |= S_IFDIR;
++			SQUASHFS_I(i)->start_block = inodep->start_block;
++			SQUASHFS_I(i)->offset = inodep->offset;
++			SQUASHFS_I(i)->u.s2.directory_index_count = 0;
++			SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode;
++
++			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: {
++			struct squashfs_ldir_inode_header *inodep = &id.ldir;
++			struct squashfs_ldir_inode_header *sinodep = &sid.ldir;
++
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, 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, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			i->i_nlink = inodep->nlink;
++			i->i_size = inodep->file_size;
++			i->i_op = &squashfs_dir_inode_ops;
++			i->i_fop = &squashfs_dir_ops;
++			i->i_mode |= S_IFDIR;
++			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;
++			SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode;
++
++			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: {
++			struct squashfs_symlink_inode_header *inodep = &id.symlink;
++			struct squashfs_symlink_inode_header *sinodep = &sid.symlink;
++	
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, 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, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			i->i_nlink = inodep->nlink;
++			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 %llx, offset %x\n",
++					SQUASHFS_INODE_BLK(inode), offset,
++					next_block, next_offset);
++			break;
++		 }
++		 case SQUASHFS_BLKDEV_TYPE:
++		 case SQUASHFS_CHRDEV_TYPE: {
++			struct squashfs_dev_inode_header *inodep = &id.dev;
++			struct squashfs_dev_inode_header *sinodep = &sid.dev;
++
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, 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, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			i->i_nlink = inodep->nlink;
++			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: {
++			struct squashfs_ipc_inode_header *inodep = &id.ipc;
++			struct squashfs_ipc_inode_header *sinodep = &sid.ipc;
++
++			if (msblk->swap) {
++				if (!squashfs_get_cached_block(s, sinodep, block, offset,
++						sizeof(*sinodep), &next_block, &next_offset))
++					goto failed_read;
++				SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep);
++			} else	
++				if (!squashfs_get_cached_block(s, inodep, block, offset,
++						sizeof(*inodep), &next_block, &next_offset))
++					goto failed_read;
++
++			i->i_nlink = inodep->nlink;
++			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;
++	}
++	
++	return 1;
++
++failed_read:
++	ERROR("Unable to read inode [%llx:%x]\n", block, offset);
++
++failed_read1:
++	make_bad_inode(i);
++	return 0;
++}
++
++
++static int read_inode_lookup_table(struct super_block *s)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++	unsigned int length = SQUASHFS_LOOKUP_BLOCK_BYTES(sblk->inodes);
++
++	TRACE("In read_inode_lookup_table, length %d\n", length);
++
++	/* Allocate inode lookup table */
++	msblk->inode_lookup_table = kmalloc(length, GFP_KERNEL);
++	if (msblk->inode_lookup_table == NULL) {
++		ERROR("Failed to allocate inode lookup table\n");
++		return 0;
++	}
++   
++	if (!squashfs_read_data(s, (char *) msblk->inode_lookup_table,
++			sblk->lookup_table_start, length |
++			SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, length)) {
++		ERROR("unable to read inode lookup table\n");
++		return 0;
++	}
++
++	if (msblk->swap) {
++		int i;
++		long long block;
++
++		for (i = 0; i < SQUASHFS_LOOKUP_BLOCKS(sblk->inodes); i++) {
++			/* XXX */
++			SQUASHFS_SWAP_LOOKUP_BLOCKS((&block),
++						&msblk->inode_lookup_table[i], 1);
++			msblk->inode_lookup_table[i] = block;
++		}
++	}
++
++	return 1;
++}
++
++
++static int read_fragment_index_table(struct super_block *s)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++	unsigned int length = SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments);
++
++	if(length == 0)
++		return 1;
++
++	/* Allocate fragment index table */
++	msblk->fragment_index = kmalloc(length, GFP_KERNEL);
++	if (msblk->fragment_index == NULL) {
++		ERROR("Failed to allocate fragment index table\n");
++		return 0;
++	}
++   
++	if (!squashfs_read_data(s, (char *) msblk->fragment_index,
++			sblk->fragment_table_start, length |
++			SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, length)) {
++		ERROR("unable to read fragment index table\n");
++		return 0;
++	}
++
++	if (msblk->swap) {
++		int i;
++		long long fragment;
++
++		for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sblk->fragments); i++) {
++			/* XXX */
++			SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment),
++						&msblk->fragment_index[i], 1);
++			msblk->fragment_index[i] = fragment;
++		}
++	}
++
++	return 1;
++}
++
++
++static int readahead_metadata(struct super_block *s)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	int i;
++
++	squashfs_cached_blks = SQUASHFS_CACHED_BLKS;
++
++	/* Init inode_table block pointer array */
++	msblk->block_cache = kmalloc(sizeof(struct squashfs_cache) *
++					squashfs_cached_blks, GFP_KERNEL);
++	if (msblk->block_cache == NULL) {
++		ERROR("Failed to allocate block cache\n");
++		goto failed;
++	}
++
++	for (i = 0; i < squashfs_cached_blks; i++)
++		msblk->block_cache[i].block = SQUASHFS_INVALID_BLK;
++
++	msblk->next_cache = 0;
++	msblk->unused_cache_blks = squashfs_cached_blks;
++
++	return 1;
++
++failed:
++	return 0;
++}
++
++
++static int supported_squashfs_filesystem(struct squashfs_sb_info *msblk, int silent)
++{
++	struct squashfs_super_block *sblk = &msblk->sblk;
++
++	msblk->read_inode = squashfs_read_inode;
++	msblk->read_blocklist = read_blocklist;
++	msblk->read_fragment_index_table = read_fragment_index_table;
++
++	if (sblk->s_major == 1) {
++		if (!squashfs_1_0_supported(msblk)) {
++			SERROR("Major/Minor mismatch, Squashfs 1.0 filesystems "
++				"are unsupported\n");
++			SERROR("Please recompile with Squashfs 1.0 support enabled\n");
++			return 0;
++		}
++	} else if (sblk->s_major == 2) {
++		if (!squashfs_2_0_supported(msblk)) {
++			SERROR("Major/Minor mismatch, Squashfs 2.0 filesystems "
++				"are unsupported\n");
++			SERROR("Please recompile with Squashfs 2.0 support enabled\n");
++			return 0;
++		}
++	} else if(sblk->s_major != SQUASHFS_MAJOR || sblk->s_minor >
++			SQUASHFS_MINOR) {
++		SERROR("Major/Minor mismatch, trying to mount newer %d.%d "
++				"filesystem\n", sblk->s_major, sblk->s_minor);
++		SERROR("Please update your kernel\n");
++		return 0;
++	}
++
++	return 1;
++}
++
++
++static int squashfs_fill_super(struct super_block *s, void *data, int silent)
++{
++	struct squashfs_sb_info *msblk;
++	struct squashfs_super_block *sblk;
++	int i;
++	char b[BDEVNAME_SIZE];
++	struct inode *root;
++
++	TRACE("Entered squashfs_fill_superblock\n");
++
++	s->s_fs_info = kzalloc(sizeof(struct squashfs_sb_info), GFP_KERNEL);
++	if (s->s_fs_info == NULL) {
++		ERROR("Failed to allocate superblock\n");
++		goto failure;
++	}
++	msblk = s->s_fs_info;
++
++	msblk->stream.workspace = vmalloc(zlib_inflate_workspacesize());
++	if (msblk->stream.workspace == NULL) {
++		ERROR("Failed to allocate zlib workspace\n");
++		goto failure;
++	}
++	sblk = &msblk->sblk;
++	
++	msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE);
++	msblk->devblksize_log2 = ffz(~msblk->devblksize);
++
++	mutex_init(&msblk->read_data_mutex);
++	mutex_init(&msblk->read_page_mutex);
++	mutex_init(&msblk->block_cache_mutex);
++	mutex_init(&msblk->fragment_mutex);
++	mutex_init(&msblk->meta_index_mutex);
++	
++	init_waitqueue_head(&msblk->waitq);
++	init_waitqueue_head(&msblk->fragment_wait_queue);
++
++	/* sblk->bytes_used is checked in squashfs_read_data to ensure reads are not
++ 	 * beyond filesystem end.  As we're using squashfs_read_data to read sblk here,
++ 	 * first set sblk->bytes_used to a useful value */
++	sblk->bytes_used = sizeof(struct squashfs_super_block);
++	if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START,
++					sizeof(struct squashfs_super_block) |
++					SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, sizeof(struct squashfs_super_block))) {
++		SERROR("unable to read superblock\n");
++		goto failed_mount;
++	}
++
++	/* Check it is a SQUASHFS superblock */
++	if ((s->s_magic = sblk->s_magic) != SQUASHFS_MAGIC) {
++		if (sblk->s_magic == SQUASHFS_MAGIC_SWAP) {
++			struct squashfs_super_block ssblk;
++
++			WARNING("Mounting a different endian SQUASHFS filesystem on %s\n",
++				bdevname(s->s_bdev, b));
++
++			SQUASHFS_SWAP_SUPER_BLOCK(&ssblk, sblk);
++			memcpy(sblk, &ssblk, sizeof(struct 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 */
++	if(!supported_squashfs_filesystem(msblk, silent))
++		goto failed_mount;
++
++	/* Check the filesystem does not extend beyond the end of the
++	   block device */
++	if(sblk->bytes_used < 0 || sblk->bytes_used > i_size_read(s->s_bdev->bd_inode))
++		goto failed_mount;
++
++	/* Check the root inode for sanity */
++	if (SQUASHFS_INODE_OFFSET(sblk->root_inode) > SQUASHFS_METADATA_SIZE)
++		goto failed_mount;
++
++	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 %spresent in the filesystem\n",
++					SQUASHFS_CHECK_DATA(sblk->flags) ?  "" : "not ");
++	TRACE("Filesystem size %lld 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 %llx\n", sblk->inode_table_start);
++	TRACE("sblk->directory_table_start %llx\n", sblk->directory_table_start);
++	if (sblk->s_major > 1)
++		TRACE("sblk->fragment_table_start %llx\n", sblk->fragment_table_start);
++	TRACE("sblk->uid_start %llx\n", sblk->uid_start);
++
++	s->s_maxbytes = MAX_LFS_FILESIZE;
++	s->s_flags |= MS_RDONLY;
++	s->s_op = &squashfs_super_ops;
++
++	if (readahead_metadata(s) == 0)
++		goto failed_mount;
++
++	/* Allocate read_page block */
++	msblk->read_page = vmalloc(sblk->block_size);
++	if (msblk->read_page == NULL) {
++		ERROR("Failed to allocate read_page block\n");
++		goto failed_mount;
++	}
++
++	/* Allocate uid and gid tables */
++	msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) *
++					sizeof(unsigned int), GFP_KERNEL);
++	if (msblk->uid == NULL) {
++		ERROR("Failed to allocate uid/gid table\n");
++		goto failed_mount;
++	}
++	msblk->guid = msblk->uid + sblk->no_uids;
++   
++	if (msblk->swap) {
++		unsigned int suid[sblk->no_uids + sblk->no_guids];
++
++		if (!squashfs_read_data(s, (char *) &suid, sblk->uid_start,
++					((sblk->no_uids + sblk->no_guids) *
++					 sizeof(unsigned int)) |
++					SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, (sblk->no_uids + sblk->no_guids) * sizeof(unsigned int))) {
++			ERROR("unable to read uid/gid table\n");
++			goto failed_mount;
++		}
++
++		SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids +
++			sblk->no_guids), (sizeof(unsigned int) * 8));
++	} else
++		if (!squashfs_read_data(s, (char *) msblk->uid, sblk->uid_start,
++					((sblk->no_uids + sblk->no_guids) *
++					 sizeof(unsigned int)) |
++					SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, (sblk->no_uids + sblk->no_guids) * sizeof(unsigned int))) {
++			ERROR("unable to read uid/gid table\n");
++			goto failed_mount;
++		}
++
++
++	if (sblk->s_major == 1 && squashfs_1_0_supported(msblk))
++		goto allocate_root;
++
++	msblk->fragment = kzalloc(sizeof(struct squashfs_fragment_cache) *
++				SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL);
++	if (msblk->fragment == NULL) {
++		ERROR("Failed to allocate fragment block cache\n");
++		goto failed_mount;
++	}
++
++	for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) {
++		msblk->fragment[i].block = SQUASHFS_INVALID_BLK;
++	}
++
++	msblk->next_fragment = 0;
++	msblk->unused_frag_blks = SQUASHFS_CACHED_FRAGMENTS;
++
++	/* Allocate and read fragment index table */
++	if (msblk->read_fragment_index_table(s) == 0)
++		goto failed_mount;
++
++	if(sblk->s_major < 3 || sblk->lookup_table_start == SQUASHFS_INVALID_BLK)
++		goto allocate_root;
++
++	/* Allocate and read inode lookup table */
++	if (read_inode_lookup_table(s) == 0)
++		goto failed_mount;
++
++	s->s_op = &squashfs_export_super_ops;
++	s->s_export_op = &squashfs_export_ops;
++
++allocate_root:
++	root = new_inode(s);
++	if ((msblk->read_inode)(root, sblk->root_inode) == 0)
++		goto failed_mount;
++	insert_inode_hash(root);
++
++	s->s_root = d_alloc_root(root);
++	if (s->s_root == NULL) {
++		ERROR("Root inode create failed\n");
++		iput(root);
++		goto failed_mount;
++	}
++
++	TRACE("Leaving squashfs_fill_super\n");
++	return 0;
++
++failed_mount:
++	kfree(msblk->inode_lookup_table);
++	kfree(msblk->fragment_index);
++	kfree(msblk->fragment);
++	kfree(msblk->uid);
++	vfree(msblk->read_page);
++	kfree(msblk->block_cache);
++	kfree(msblk->fragment_index_2);
++	vfree(msblk->stream.workspace);
++	kfree(s->s_fs_info);
++	s->s_fs_info = NULL;
++	return -EINVAL;
++
++failure:
++	return -ENOMEM;
++}
++
++
++static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++	struct squashfs_sb_info *msblk = dentry->d_sb->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->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, avail_bytes;
++	long long block = SQUASHFS_I(inode)->start_block;
++	int offset = SQUASHFS_I(inode)->offset;
++	void *pageaddr = kmap(page);
++
++	TRACE("Entered squashfs_symlink_readpage, page index %ld, start block "
++				"%llx, offset %x\n", page->index,
++				SQUASHFS_I(inode)->start_block,
++				SQUASHFS_I(inode)->offset);
++
++	for (length = 0; length < index; length += bytes) {
++		bytes = squashfs_get_cached_block(inode->i_sb, NULL, block,
++				offset, PAGE_CACHE_SIZE, &block, &offset);
++		if (bytes == 0) {
++			ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset);
++			goto skip_read;
++		}
++	}
++
++	if (length != index) {
++		ERROR("(squashfs_symlink_readpage) length != index\n");
++		bytes = 0;
++		goto skip_read;
++	}
++
++	avail_bytes = min_t(int, i_size_read(inode) - length, PAGE_CACHE_SIZE);
++
++	bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, offset,
++		avail_bytes, &block, &offset);
++	if (bytes == 0)
++		ERROR("Unable to read symbolic link [%llx:%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;
++}
++
++
++struct meta_index *locate_meta_index(struct inode *inode, int index, int offset)
++{
++	struct meta_index *meta = NULL;
++	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++	int i;
++
++	mutex_lock(&msblk->meta_index_mutex);
++
++	TRACE("locate_meta_index: index %d, offset %d\n", index, offset);
++
++	if (msblk->meta_index == NULL)
++		goto not_allocated;
++
++	for (i = 0; i < SQUASHFS_META_NUMBER; i ++) {
++		if (msblk->meta_index[i].inode_number == inode->i_ino &&
++				msblk->meta_index[i].offset >= offset &&
++				msblk->meta_index[i].offset <= index &&
++				msblk->meta_index[i].locked == 0) {
++			TRACE("locate_meta_index: entry %d, offset %d\n", i,
++					msblk->meta_index[i].offset);
++			meta = &msblk->meta_index[i];
++			offset = meta->offset;
++		}
++	}
++
++	if (meta)
++		meta->locked = 1;
++
++not_allocated:
++	mutex_unlock(&msblk->meta_index_mutex);
++
++	return meta;
++}
++
++
++struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip)
++{
++	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++	struct meta_index *meta = NULL;
++	int i;
++
++	mutex_lock(&msblk->meta_index_mutex);
++
++	TRACE("empty_meta_index: offset %d, skip %d\n", offset, skip);
++
++	if (msblk->meta_index == NULL) {
++		msblk->meta_index = kmalloc(sizeof(struct meta_index) *
++					SQUASHFS_META_NUMBER, GFP_KERNEL);
++		if (msblk->meta_index == NULL) {
++			ERROR("Failed to allocate meta_index\n");
++			goto failed;
++		}
++		for (i = 0; i < SQUASHFS_META_NUMBER; i++) {
++			msblk->meta_index[i].inode_number = 0;
++			msblk->meta_index[i].locked = 0;
++		}
++		msblk->next_meta_index = 0;
++	}
++
++	for (i = SQUASHFS_META_NUMBER; i &&
++			msblk->meta_index[msblk->next_meta_index].locked; i --)
++		msblk->next_meta_index = (msblk->next_meta_index + 1) %
++			SQUASHFS_META_NUMBER;
++
++	if (i == 0) {
++		TRACE("empty_meta_index: failed!\n");
++		goto failed;
++	}
++
++	TRACE("empty_meta_index: returned meta entry %d, %p\n",
++			msblk->next_meta_index,
++			&msblk->meta_index[msblk->next_meta_index]);
++
++	meta = &msblk->meta_index[msblk->next_meta_index];
++	msblk->next_meta_index = (msblk->next_meta_index + 1) %
++			SQUASHFS_META_NUMBER;
++
++	meta->inode_number = inode->i_ino;
++	meta->offset = offset;
++	meta->skip = skip;
++	meta->entries = 0;
++	meta->locked = 1;
++
++failed:
++	mutex_unlock(&msblk->meta_index_mutex);
++	return meta;
++}
++
++
++void release_meta_index(struct inode *inode, struct meta_index *meta)
++{
++	meta->locked = 0;
++	smp_mb();
++}
++
++
++static int read_block_index(struct super_block *s, int blocks, char *block_list,
++				long long *start_block, int *offset)
++{
++	struct squashfs_sb_info *msblk = s->s_fs_info;
++	unsigned int *block_listp;
++	int block = 0;
++	
++	if (msblk->swap) {
++		char sblock_list[blocks << 2];
++
++		if (!squashfs_get_cached_block(s, sblock_list, *start_block,
++				*offset, blocks << 2, start_block, offset)) {
++			ERROR("Fail reading block list [%llx:%x]\n", *start_block, *offset);
++			goto failure;
++		}
++		SQUASHFS_SWAP_INTS(((unsigned int *)block_list),
++				((unsigned int *)sblock_list), blocks);
++	} else {
++		if (!squashfs_get_cached_block(s, block_list, *start_block,
++				*offset, blocks << 2, start_block, offset)) {
++			ERROR("Fail reading block list [%llx:%x]\n", *start_block, *offset);
++			goto failure;
++		}
++	}
++
++	for (block_listp = (unsigned int *) block_list; blocks;
++				block_listp++, blocks --)
++		block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp);
++
++	return block;
++
++failure:
++	return -1;
++}
++
++
++#define SIZE 256
++
++static inline int calculate_skip(int blocks) {
++	int skip = (blocks - 1) / ((SQUASHFS_SLOTS * SQUASHFS_META_ENTRIES + 1) * SQUASHFS_META_INDEXES);
++	return skip >= 7 ? 7 : skip + 1;
++}
++
++
++static int get_meta_index(struct inode *inode, int index,
++		long long *index_block, int *index_offset,
++		long long *data_block, char *block_list)
++{
++	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++	struct squashfs_super_block *sblk = &msblk->sblk;
++	int skip = calculate_skip(i_size_read(inode) >> sblk->block_log);
++	int offset = 0;
++	struct meta_index *meta;
++	struct meta_entry *meta_entry;
++	long long cur_index_block = SQUASHFS_I(inode)->u.s1.block_list_start;
++	int cur_offset = SQUASHFS_I(inode)->offset;
++	long long cur_data_block = SQUASHFS_I(inode)->start_block;
++	int i;
++ 
++	index /= SQUASHFS_META_INDEXES * skip;
++
++	while (offset < index) {
++		meta = locate_meta_index(inode, index, offset + 1);
++
++		if (meta == NULL) {
++			meta = empty_meta_index(inode, offset + 1, skip);
++			if (meta == NULL)
++				goto all_done;
++		} else {
++			if(meta->entries == 0)
++				goto failed;
++			/* XXX */
++			offset = index < meta->offset + meta->entries ? index :
++				meta->offset + meta->entries - 1;
++			/* XXX */
++			meta_entry = &meta->meta_entry[offset - meta->offset];
++			cur_index_block = meta_entry->index_block + sblk->inode_table_start;
++			cur_offset = meta_entry->offset;
++			cur_data_block = meta_entry->data_block;
++			TRACE("get_meta_index: offset %d, meta->offset %d, "
++				"meta->entries %d\n", offset, meta->offset, meta->entries);
++			TRACE("get_meta_index: index_block 0x%llx, offset 0x%x"
++				" data_block 0x%llx\n", cur_index_block,
++				cur_offset, cur_data_block);
++		}
++
++		for (i = meta->offset + meta->entries; i <= index &&
++				i < meta->offset + SQUASHFS_META_ENTRIES; i++) {
++			int blocks = skip * SQUASHFS_META_INDEXES;
++
++			while (blocks) {
++				int block = blocks > (SIZE >> 2) ? (SIZE >> 2) : blocks;
++				int res = read_block_index(inode->i_sb, block, block_list,
++					&cur_index_block, &cur_offset);
++
++				if (res == -1)
++					goto failed;
++
++				cur_data_block += res;
++				blocks -= block;
++			}
++
++			meta_entry = &meta->meta_entry[i - meta->offset];
++			meta_entry->index_block = cur_index_block - sblk->inode_table_start;
++			meta_entry->offset = cur_offset;
++			meta_entry->data_block = cur_data_block;
++			meta->entries ++;
++			offset ++;
++		}
++
++		TRACE("get_meta_index: meta->offset %d, meta->entries %d\n",
++				meta->offset, meta->entries);
++
++		release_meta_index(inode, meta);
++	}
++
++all_done:
++	*index_block = cur_index_block;
++	*index_offset = cur_offset;
++	*data_block = cur_data_block;
++
++	return offset * SQUASHFS_META_INDEXES * skip;
++
++failed:
++	release_meta_index(inode, meta);
++	return -1;
++}
++
++
++static long long read_blocklist(struct inode *inode, int index,
++				int readahead_blks, char *block_list,
++				unsigned short **block_p, unsigned int *bsize)
++{
++	long long block_ptr;
++	int offset;
++	long long block;
++	int res = get_meta_index(inode, index, &block_ptr, &offset, &block,
++		block_list);
++
++	TRACE("read_blocklist: res %d, index %d, block_ptr 0x%llx, offset"
++		       " 0x%x, block 0x%llx\n", res, index, block_ptr, offset, block);
++
++	if(res == -1)
++		goto failure;
++
++	index -= res;