[Frugalware-darcs] frugalware-current: kernel-fwlive-2.6.21-1-i686

VMiklos vmiklos at frugalware.org
Mon Jun 4 00:45:52 CEST 2007


Darcsweb-Url: http://darcs.frugalware.org/darcsweb/darcsweb.cgi?r=frugalware-current;a=darcs_commitdiff;h=20070603200327-e2957-9c4364f0de553eebc648e0a60325f58ff3b7df0e.gz;

[kernel-fwlive-2.6.21-1-i686
VMiklos <vmiklos at frugalware.org>**20070603200327
 moved squashfs3.2-patch to ftp
] {
hunk ./source/base-extra/kernel-fwlive/FrugalBuild 9
-_F_kernel_patches=(ksize.patch lhash.patch squashfs3.2-patch sqlzma2k-3.2-r2.patch)
+_F_kernel_patches=(http://ftp.frugalware.org/pub/other/sources/kernel/linux-2.6.21-squashfs3.2-patch.bz2 \
+	ksize.patch lhash.patch sqlzma2k-3.2-r2.patch)
hunk ./source/base-extra/kernel-fwlive/squashfs3.2-patch 1
-diff -x .gitignore -Nurp linux-2.6.20/fs/Kconfig linux-2.6.20-squashfs3.2-r2/fs/Kconfig
---- linux-2.6.20/fs/Kconfig	2006-12-25 01:13:12.000000000 +0000
-+++ linux-2.6.20-squashfs3.2-r2/fs/Kconfig	2007-01-16 02:06:03.000000000 +0000
-@@ -1404,6 +1404,71 @@ config CRAMFS
- 
- 	  If unsure, say N.
- 
-+config SQUASHFS
-+	tristate "SquashFS 3.2 - Squashed file system support"
-+	select ZLIB_INFLATE
-+	help
-+	  Saying Y here includes support for SquashFS 3.2 (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 64K.
-+	  SquashFS 3.1 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 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)"
- 	depends on BLOCK
-diff -x .gitignore -Nurp linux-2.6.20/fs/Makefile linux-2.6.20-squashfs3.2-r2/fs/Makefile
---- linux-2.6.20/fs/Makefile	2006-12-25 01:13:12.000000000 +0000
-+++ linux-2.6.20-squashfs3.2-r2/fs/Makefile	2007-01-16 02:06:03.000000000 +0000
-@@ -68,6 +68,7 @@ obj-$(CONFIG_JBD)		+= jbd/
- obj-$(CONFIG_JBD2)		+= jbd2/
- 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 -x .gitignore -Nurp linux-2.6.20/fs/squashfs/inode.c linux-2.6.20-squashfs3.2-r2/fs/squashfs/inode.c
---- linux-2.6.20/fs/squashfs/inode.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/fs/squashfs/inode.c	2007-01-16 02:28:36.000000000 +0000
-@@ -0,0 +1,2329 @@
-+/*
-+ * Squashfs - a compressed read only filesystem for Linux
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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/vfs.h>
-+#include <linux/vmalloc.h>
-+#include <linux/smp_lock.h>
-+
-+#include "squashfs.h"
-+
-+static void vfs_read_inode(struct inode *i);
-+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_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 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,
-+	.read_inode = vfs_read_inode
-+};
-+
-+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
-+};
-+
-+SQSH_EXTERN const struct address_space_operations squashfs_aops_4K = {
-+	.readpage = squashfs_readpage4K
-+};
-+
-+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[((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 = 0;
-+	unsigned int compressed;
-+	unsigned int c_byte = length;
-+
-+	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;
-+
-+		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 (index < 0 || (index + 2) > sblk->bytes_used)
-+			goto read_failure;
-+
-+		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_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++) {
-+			if (!(bh[b] = sb_getblk(s, ++cur_index)))
-+				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 = (c_byte - bytes) > (msblk->devblksize - offset) ?
-+					msblk->devblksize - offset :
-+					c_byte - bytes;
-+			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 = (c_byte - bytes) > (msblk->devblksize - offset) ?
-+					msblk->devblksize - offset :
-+					c_byte - bytes;
-+			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));
-+	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);
-+	return 0;
-+}
-+
-+
-+SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, char *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 */
-+			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);
-+				set_current_state(TASK_UNINTERRUPTIBLE);
-+ 				mutex_unlock(&msblk->block_cache_mutex);
-+				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 =
-+						kmalloc(SQUASHFS_METADATA_SIZE,
-+						GFP_KERNEL))) {
-+					ERROR("Failed to allocate cache"
-+							"block\n");
-+					mutex_unlock(&msblk->block_cache_mutex);
-+					goto out;
-+				}
-+			}
-+	
-+			msblk->block_cache[i].block = SQUASHFS_USED_BLK;
-+			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;
-+				kfree(msblk->block_cache[i].data);
-+				wake_up(&msblk->waitq);
-+				mutex_unlock(&msblk->block_cache_mutex);
-+				goto out;
-+			}
-+
-+			mutex_lock(&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 [%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 += 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, (char *) &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, (char *) &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 --;
-+	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) {
-+			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);
-+				set_current_state(TASK_UNINTERRUPTIBLE);
-+				mutex_unlock(&msblk->fragment_mutex);
-+				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 = SQUASHFS_ALLOC
-+						(SQUASHFS_FILE_MAX_SIZE))) {
-+					ERROR("Failed to allocate fragment "
-+							"cache block\n");
-+					mutex_unlock(&msblk->fragment_mutex);
-+					goto out;
-+				}
-+
-+			msblk->fragment[i].block = SQUASHFS_INVALID_BLK;
-+			msblk->fragment[i].locked = 1;
-+			mutex_unlock(&msblk->fragment_mutex);
-+
-+			if (!(msblk->fragment[i].length = squashfs_read_data(s,
-+						msblk->fragment[i].data,
-+						start_block, length, NULL, sblk->block_size))) {
-+				ERROR("Unable to read fragment cache block "
-+							"[%llx]\n", start_block);
-+				msblk->fragment[i].locked = 0;
-+				smp_mb();
-+				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;
-+		}
-+
-+		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 squashfs_inode_t squashfs_inode_lookup(struct super_block *s, int ino)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	long long start = msblk->inode_lookup_table[SQUASHFS_LOOKUP_BLOCK(ino - 1)];
-+	int offset = SQUASHFS_LOOKUP_BLOCK_OFFSET(ino - 1);
-+	squashfs_inode_t inode;
-+
-+	TRACE("Entered squashfs_inode_lookup, inode_number = %d\n", ino);
-+
-+	if (msblk->swap) {
-+		squashfs_inode_t sinode;
-+
-+		if (!squashfs_get_cached_block(s, (char *) &sinode, start, offset,
-+					sizeof(sinode), &start, &offset))
-+			goto out;
-+		SQUASHFS_SWAP_INODE_T((&inode), &sinode);
-+	} else if (!squashfs_get_cached_block(s, (char *) &inode, start, offset,
-+					sizeof(inode), &start, &offset))
-+			goto out;
-+
-+	TRACE("squashfs_inode_lookup, inode = 0x%llx\n", inode);
-+
-+	return inode;
-+
-+out:
-+	return SQUASHFS_INVALID_BLK;
-+}
-+	
-+
-+static void vfs_read_inode(struct inode *i)
-+{
-+	struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
-+	squashfs_inode_t inode = squashfs_inode_lookup(i->i_sb, i->i_ino);
-+
-+	TRACE("Entered vfs_read_inode\n");
-+
-+	if(inode != SQUASHFS_INVALID_BLK)
-+		(msblk->read_inode)(i, inode);
-+}
-+
-+
-+static struct dentry *squashfs_get_parent(struct dentry *child)
-+{
-+	struct inode *i = child->d_inode;
-+	struct inode *parent = iget(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(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 && (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, (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;
-+
-+	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, (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;
-+
-+			frag_blk = SQUASHFS_INVALID_BLK;
-+			if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
-+					!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;
-+			if (sblk->block_size > 4096)
-+				i->i_data.a_ops = &squashfs_aops;
-+			else
-+				i->i_data.a_ops = &squashfs_aops_4K;
-+
-+			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, (char *)
-+						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, (char *)
-+						inodep, block, offset,
-+						sizeof(*inodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+
-+			frag_blk = SQUASHFS_INVALID_BLK;
-+			if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
-+					!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;
-+			if (sblk->block_size > 4096)
-+				i->i_data.a_ops = &squashfs_aops;
-+			else
-+				i->i_data.a_ops = &squashfs_aops_4K;
-+
-+			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, (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_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, (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_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, (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_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, (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_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, (char *)
-+						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, (char *)
-+						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 */
-+	if (!(msblk->inode_lookup_table = kmalloc(length, GFP_KERNEL))) {
-+		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++) {
-+			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 */
-+	if (!(msblk->fragment_index = kmalloc(length, GFP_KERNEL))) {
-+		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++) {
-+			SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment),
-+						&msblk->fragment_index[i], 1);
-+			msblk->fragment_index[i] = fragment;
-+		}
-+	}
-+
-+	return 1;
-+}
-+
-+
-+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_read_superblock\n");
-+
-+	if (!(s->s_fs_info = kmalloc(sizeof(struct squashfs_sb_info),
-+						GFP_KERNEL))) {
-+		ERROR("Failed to allocate superblock\n");
-+		goto failure;
-+	}
-+	memset(s->s_fs_info, 0, sizeof(struct squashfs_sb_info));
-+	msblk = s->s_fs_info;
-+	if (!(msblk->stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
-+		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 = 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 */
-+	msblk->swap = 0;
-+	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 %s present 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_flags |= MS_RDONLY;
-+	s->s_op = &squashfs_super_ops;
-+
-+	/* Init inode_table block pointer array */
-+	if (!(msblk->block_cache = kmalloc(sizeof(struct 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_page block */
-+	if (!(msblk->read_page = kmalloc(sblk->block_size, GFP_KERNEL))) {
-+		ERROR("Failed to allocate read_page block\n");
-+		goto failed_mount;
-+	}
-+
-+	/* Allocate uid and gid tables */
-+	if (!(msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) *
-+					sizeof(unsigned int), GFP_KERNEL))) {
-+		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;
-+
-+	if (!(msblk->fragment = kmalloc(sizeof(struct squashfs_fragment_cache) *
-+				SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) {
-+		ERROR("Failed to allocate fragment block cache\n");
-+		goto failed_mount;
-+	}
-+
-+	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 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);
-+
-+	if ((s->s_root = d_alloc_root(root)) == NULL) {
-+		ERROR("Root inode create failed\n");
-+		iput(root);
-+		goto failed_mount;
-+	}
-+
-+	TRACE("Leaving squashfs_read_super\n");
-+	return 0;
-+
-+failed_mount:
-+	kfree(msblk->inode_lookup_table);
-+	kfree(msblk->fragment_index);
-+	kfree(msblk->fragment);
-+	kfree(msblk->uid);
-+	kfree(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;
-+	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) {
-+		if (!(bytes = squashfs_get_cached_block(inode->i_sb, NULL,
-+				block, offset, PAGE_CACHE_SIZE, &block,
-+				&offset))) {
-+			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;
-+	}
-+
-+	bytes = (i_size_read(inode) - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE :
-+					i_size_read(inode) - length;
-+
-+	if (!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block,
-+					offset, bytes, &block, &offset)))
-+		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) {
-+		if (!(msblk->meta_index = kmalloc(sizeof(struct meta_index) *
-+					SQUASHFS_META_NUMBER, GFP_KERNEL))) {
-+			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("Unable to read 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("Unable to read 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) {
-+			if ((meta = empty_meta_index(inode, offset + 1,
-+							skip)) == NULL)
-+				goto all_done;
-+		} else {
-+			if(meta->entries == 0)
-+				goto failed;
-+			offset = index < meta->offset + meta->entries ? index :
-+				meta->offset + meta->entries - 1;
-+			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;
-+
-+	while ( index ) {
-+		int blocks = index > (SIZE >> 2) ? (SIZE >> 2) : index;
-+		int res = read_block_index(inode->i_sb, blocks, block_list,
-+			&block_ptr, &offset);
-+		if (res == -1)
-+			goto failure;
-+		block += res;
-+		index -= blocks;
-+	}
-+
-+	if (read_block_index(inode->i_sb, 1, block_list,
-+			&block_ptr, &offset) == -1)
-+		goto failure;
-+	*bsize = *((unsigned int *) block_list);
-+
-+	return block;
-+
-+failure:
-+	return 0;
-+}
-+
-+
-+static int squashfs_readpage(struct file *file, struct page *page)
-+{
-+	struct inode *inode = page->mapping->host;
-+	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	unsigned char *block_list;
-+	long long block;
-+	unsigned int bsize, i = 0, bytes = 0, byte_offset = 0;
-+	int index = page->index >> (sblk->block_log - PAGE_CACHE_SHIFT);
-+ 	void *pageaddr;
-+	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 %lx, start block %llx\n",
-+					page->index,
-+					SQUASHFS_I(inode)->start_block);
-+
-+	if (!(block_list = kmalloc(SIZE, GFP_KERNEL))) {
-+		ERROR("Failed to allocate block_list\n");
-+		goto skip_read;
-+	}
-+
-+	if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
-+					PAGE_CACHE_SHIFT))
-+		goto skip_read;
-+
-+	if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
-+					|| index < (i_size_read(inode) >>
-+					sblk->block_log)) {
-+		if ((block = (msblk->read_blocklist)(inode, index, 1,
-+					block_list, NULL, &bsize)) == 0)
-+			goto skip_read;
-+
-+		mutex_lock(&msblk->read_page_mutex);
-+		
-+		if (!(bytes = squashfs_read_data(inode->i_sb, msblk->read_page,
-+					block, bsize, NULL, sblk->block_size))) {
-+			ERROR("Unable to read page, block %llx, size %x\n", block,
-+					bsize);
-+			mutex_unlock(&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 %llx, 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 +
-+					(i_size_read(inode) & (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 avail = (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, avail);
-+
-+		push_page = (i == page->index) ? page :
-+			grab_cache_page_nowait(page->mapping, i);
-+
-+		if (!push_page)
-+			continue;
-+
-+		if (PageUptodate(push_page))
-+			goto skip_page;
-+
-+ 		pageaddr = kmap_atomic(push_page, KM_USER0);
-+		memcpy(pageaddr, data_ptr + byte_offset, avail);
-+		memset(pageaddr + avail, 0, PAGE_CACHE_SIZE - avail);
-+		kunmap_atomic(pageaddr, KM_USER0);
-+		flush_dcache_page(push_page);
-+		SetPageUptodate(push_page);
-+skip_page:
-+		unlock_page(push_page);
-+		if(i != page->index)
-+			page_cache_release(push_page);
-+	}
-+
-+	if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
-+					|| index < (i_size_read(inode) >>
-+					sblk->block_log))
-+		mutex_unlock(&msblk->read_page_mutex);
-+	else
-+		release_cached_fragment(msblk, fragment);
-+
-+	kfree(block_list);
-+	return 0;
-+
-+skip_read:
-+	pageaddr = kmap_atomic(page, KM_USER0);
-+	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
-+	kunmap_atomic(pageaddr, KM_USER0);
-+	flush_dcache_page(page);
-+	SetPageUptodate(page);
-+	unlock_page(page);
-+
-+	kfree(block_list);
-+	return 0;
-+}
-+
-+
-+static int squashfs_readpage4K(struct file *file, struct page *page)
-+{
-+	struct inode *inode = page->mapping->host;
-+	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	unsigned char *block_list;
-+	long long block;
-+	unsigned int bsize, bytes = 0;
-+ 	void *pageaddr;
-+	
-+	TRACE("Entered squashfs_readpage4K, page index %lx, start block %llx\n",
-+					page->index,
-+					SQUASHFS_I(inode)->start_block);
-+
-+	if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
-+					PAGE_CACHE_SHIFT)) {
-+		block_list = NULL;
-+		goto skip_read;
-+	}
-+
-+	if (!(block_list = kmalloc(SIZE, GFP_KERNEL))) {
-+		ERROR("Failed to allocate block_list\n");
-+		goto skip_read;
-+	}
-+
-+	if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
-+					|| page->index < (i_size_read(inode) >>
-+					sblk->block_log)) {
-+		block = (msblk->read_blocklist)(inode, page->index, 1,
-+					block_list, NULL, &bsize);
-+		if(block == 0)
-+			goto skip_read;
-+
-+		mutex_lock(&msblk->read_page_mutex);
-+		bytes = squashfs_read_data(inode->i_sb, msblk->read_page, block,
-+					bsize, NULL, sblk->block_size);
-+		if (bytes) {
-+			pageaddr = kmap_atomic(page, KM_USER0);
-+			memcpy(pageaddr, msblk->read_page, bytes);
-+			kunmap_atomic(pageaddr, KM_USER0);
-+		} else
-+			ERROR("Unable to read page, block %llx, size %x\n",
-+					block, bsize);
-+		mutex_unlock(&msblk->read_page_mutex);
-+	} else {
-+		struct squashfs_fragment_cache *fragment =
-+			get_cached_fragment(inode->i_sb,
-+					SQUASHFS_I(inode)->
-+					u.s1.fragment_start_block,
-+					SQUASHFS_I(inode)-> u.s1.fragment_size);
-+		if (fragment) {
-+			bytes = i_size_read(inode) & (sblk->block_size - 1);
-+			pageaddr = kmap_atomic(page, KM_USER0);
-+			memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)->
-+					u.s1.fragment_offset, bytes);
-+			kunmap_atomic(pageaddr, KM_USER0);
-+			release_cached_fragment(msblk, fragment);
-+		} else
-+			ERROR("Unable to read page, block %llx, size %x\n",
-+					SQUASHFS_I(inode)->
-+					u.s1.fragment_start_block, (int)
-+					SQUASHFS_I(inode)-> u.s1.fragment_size);
-+	}
-+
-+skip_read:
-+	pageaddr = kmap_atomic(page, KM_USER0);
-+	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
-+	kunmap_atomic(pageaddr, KM_USER0);
-+	flush_dcache_page(page);
-+	SetPageUptodate(page);
-+	unlock_page(page);
-+
-+	kfree(block_list);
-+	return 0;
-+}
-+
-+
-+static int get_dir_index_using_offset(struct super_block *s, long long 
-+				*next_block, unsigned int *next_offset,
-+				long long index_start,
-+				unsigned int index_offset, int i_count,
-+				long long f_pos)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	int i, length = 0;
-+	struct squashfs_dir_index index;
-+
-+	TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n",
-+					i_count, (unsigned int) f_pos);
-+
-+	f_pos =- 3;
-+	if (f_pos == 0)
-+		goto finish;
-+
-+	for (i = 0; i < i_count; i++) {
-+		if (msblk->swap) {
-+			struct 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;
-+
-+finish:
-+	return length + 3;
-+}
-+
-+
-+static int get_dir_index_using_name(struct super_block *s, long long
-+				*next_block, unsigned int *next_offset,
-+				long long index_start,
-+				unsigned int index_offset, int i_count,
-+				const char *name, int size)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	int i, length = 0;
-+	struct squashfs_dir_index *index;
-+	char *str;
-+
-+	TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
-+
-+	if (!(str = kmalloc(sizeof(struct squashfs_dir_index) +
-+		(SQUASHFS_NAME_LEN + 1) * 2, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_index\n");
-+		goto failure;
-+	}
-+
-+	index = (struct squashfs_dir_index *) (str + SQUASHFS_NAME_LEN + 1);
-+	strncpy(str, name, size);
-+	str[size] = '\0';
-+
-+	for (i = 0; i < i_count; i++) {
-+		if (msblk->swap) {
-+			struct 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(struct 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;
-+	kfree(str);
-+failure:
-+	return length + 3;
-+}
-+
-+		
-+static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
-+{
-+	struct inode *i = file->f_dentry->d_inode;
-+	struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	long long next_block = SQUASHFS_I(i)->start_block +
-+		sblk->directory_table_start;
-+	int next_offset = SQUASHFS_I(i)->offset, length = 0,
-+		dir_count;
-+	struct squashfs_dir_header dirh;
-+	struct squashfs_dir_entry *dire;
-+
-+	TRACE("Entered squashfs_readdir [%llx:%x]\n", next_block, next_offset);
-+
-+	if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) +
-+		SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_entry\n");
-+		goto finish;
-+	}
-+
-+	while(file->f_pos < 3) {
-+		char *name;
-+		int size, i_ino;
-+
-+		if(file->f_pos == 0) {
-+			name = ".";
-+			size = 1;
-+			i_ino = i->i_ino;
-+		} else {
-+			name = "..";
-+			size = 2;
-+			i_ino = SQUASHFS_I(i)->u.s2.parent_inode;
-+		}
-+		TRACE("Calling filldir(%x, %s, %d, %d, %d, %d)\n",
-+				(unsigned int) dirent, name, size, (int)
-+				file->f_pos, i_ino,
-+				squashfs_filetype_table[1]);
-+
-+		if (filldir(dirent, name, size,
-+				file->f_pos, i_ino,
-+				squashfs_filetype_table[1]) < 0) {
-+				TRACE("Filldir returned less than 0\n");
-+				goto finish;
-+		}
-+		file->f_pos += size;
-+	}
-+
-+	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_size_read(i)) {
-+		/* read directory header */
-+		if (msblk->swap) {
-+			struct 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) {
-+				struct 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, %d)\n",
-+					(unsigned int) dirent, dire->name,
-+					dire->size + 1, (int) file->f_pos,
-+					dirh.start_block, dire->offset,
-+					dirh.inode_number + dire->inode_number,
-+					squashfs_filetype_table[dire->type]);
-+
-+			if (filldir(dirent, dire->name, dire->size + 1,
-+					file->f_pos,
-+					dirh.inode_number + dire->inode_number,
-+					squashfs_filetype_table[dire->type])
-+					< 0) {
-+				TRACE("Filldir returned less than 0\n");
-+				goto finish;
-+			}
-+			file->f_pos = length;
-+		}
-+	}
-+
-+finish:
-+	kfree(dire);
-+	return 0;
-+
-+failed_read:
-+	ERROR("Unable to read directory block [%llx:%x]\n", next_block,
-+		next_offset);
-+	kfree(dire);
-+	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;
-+	struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	long long next_block = SQUASHFS_I(i)->start_block +
-+				sblk->directory_table_start;
-+	int next_offset = SQUASHFS_I(i)->offset, length = 0,
-+				dir_count;
-+	struct squashfs_dir_header dirh;
-+	struct squashfs_dir_entry *dire;
-+
-+	TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset);
-+
-+	if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) +
-+		SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_entry\n");
-+		goto exit_lookup;
-+	}
-+
-+	if (len > SQUASHFS_NAME_LEN)
-+		goto exit_lookup;
-+
-+	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_size_read(i)) {
-+		/* read directory header */
-+		if (msblk->swap) {
-+			struct 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) {
-+				struct 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 (name[0] < dire->name[0])
-+				goto exit_lookup;
-+
-+			if ((len == dire->size + 1) && !strncmp(name, dire->name, len)) {
-+				squashfs_inode_t ino = SQUASHFS_MKINODE(dirh.start_block,
-+								dire->offset);
-+
-+				TRACE("calling squashfs_iget for directory "
-+					"entry %s, inode %x:%x, %d\n", name,
-+					dirh.start_block, dire->offset,
-+					dirh.inode_number + dire->inode_number);
-+
-+				inode = squashfs_iget(i->i_sb, ino, dirh.inode_number + dire->inode_number);
-+
-+				goto exit_lookup;
-+			}
-+		}
-+	}
-+
-+exit_lookup:
-+	kfree(dire);
-+	if (inode)
-+		return d_splice_alias(inode, dentry);
-+	d_add(dentry, inode);
-+	return ERR_PTR(0);
-+
-+failed_read:
-+	ERROR("Unable to read directory block [%llx:%x]\n", next_block,
-+		next_offset);
-+	goto exit_lookup;
-+}
-+
-+
-+static int squashfs_remount(struct super_block *s, int *flags, char *data)
-+{
-+	*flags |= MS_RDONLY;
-+	return 0;
-+}
-+
-+
-+static void squashfs_put_super(struct super_block *s)
-+{
-+	int i;
-+
-+	if (s->s_fs_info) {
-+		struct squashfs_sb_info *sbi = 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);
-+		if (sbi->fragment)
-+			for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) 
-+				SQUASHFS_FREE(sbi->fragment[i].data);
-+		kfree(sbi->fragment);
-+		kfree(sbi->block_cache);
-+		kfree(sbi->read_page);
-+		kfree(sbi->uid);
-+		kfree(sbi->fragment_index);
-+		kfree(sbi->fragment_index_2);
-+		kfree(sbi->meta_index);
-+		vfree(sbi->stream.workspace);
-+		kfree(s->s_fs_info);
-+		s->s_fs_info = NULL;
-+	}
-+}
-+
-+
-+static int squashfs_get_sb(struct file_system_type *fs_type, int flags,
-+				const char *dev_name, void *data,
-+				struct vfsmount *mnt)
-+{
-+	return get_sb_bdev(fs_type, flags, dev_name, data, squashfs_fill_super,
-+				mnt);
-+}
-+
-+
-+static int __init init_squashfs_fs(void)
-+{
-+	int err = init_inodecache();
-+	if (err)
-+		goto out;
-+
-+	printk(KERN_INFO "squashfs: version 3.2-r2 (2007/01/15) "
-+		"Phillip Lougher\n");
-+
-+	if ((err = register_filesystem(&squashfs_fs_type)))
-+		destroy_inodecache();
-+
-+out:
-+	return err;
-+}
-+
-+
-+static void __exit exit_squashfs_fs(void)
-+{
-+	unregister_filesystem(&squashfs_fs_type);
-+	destroy_inodecache();
-+}
-+
-+
-+static struct kmem_cache * squashfs_inode_cachep;
-+
-+
-+static struct inode *squashfs_alloc_inode(struct super_block *sb)
-+{
-+	struct squashfs_inode_info *ei;
-+	ei = kmem_cache_alloc(squashfs_inode_cachep, GFP_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, struct kmem_cache * cachep, unsigned long flags)
-+{
-+	struct squashfs_inode_info *ei = foo;
-+
-+	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
-+							SLAB_CTOR_CONSTRUCTOR)
-+		inode_init_once(&ei->vfs_inode);
-+}
-+ 
-+
-+static int __init 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)
-+{
-+	kmem_cache_destroy(squashfs_inode_cachep);
-+}
-+
-+
-+module_init(init_squashfs_fs);
-+module_exit(exit_squashfs_fs);
-+MODULE_DESCRIPTION("squashfs 3.2-r2, a compressed read-only filesystem");
-+MODULE_AUTHOR("Phillip Lougher <phillip at lougher.org.uk>");
-+MODULE_LICENSE("GPL");
-diff -x .gitignore -Nurp linux-2.6.20/fs/squashfs/Makefile linux-2.6.20-squashfs3.2-r2/fs/squashfs/Makefile
---- linux-2.6.20/fs/squashfs/Makefile	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/fs/squashfs/Makefile	2007-01-12 00:06:09.000000000 +0000
-@@ -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 -x .gitignore -Nurp linux-2.6.20/fs/squashfs/squashfs2_0.c linux-2.6.20-squashfs3.2-r2/fs/squashfs/squashfs2_0.c
---- linux-2.6.20/fs/squashfs/squashfs2_0.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/fs/squashfs/squashfs2_0.c	2007-01-12 02:27:20.000000000 +0000
-@@ -0,0 +1,742 @@
-+/*
-+ * Squashfs - a compressed read only filesystem for Linux
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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.
-+ *
-+ * squashfs2_0.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 "squashfs.h"
-+static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir);
-+static struct dentry *squashfs_lookup_2(struct inode *, struct dentry *,
-+				struct nameidata *);
-+
-+static struct file_operations squashfs_dir_ops_2 = {
-+	.read = generic_read_dir,
-+	.readdir = squashfs_readdir_2
-+};
-+
-+static struct inode_operations squashfs_dir_inode_ops_2 = {
-+	.lookup = squashfs_lookup_2
-+};
-+
-+static unsigned char squashfs_filetype_table[] = {
-+	DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK
-+};
-+
-+static int read_fragment_index_table_2(struct super_block *s)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+
-+	if (!(msblk->fragment_index_2 = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES_2
-+					(sblk->fragments), GFP_KERNEL))) {
-+		ERROR("Failed to allocate uid/gid table\n");
-+		return 0;
-+	}
-+   
-+	if (SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments) &&
-+					!squashfs_read_data(s, (char *)
-+					msblk->fragment_index_2,
-+					sblk->fragment_table_start,
-+					SQUASHFS_FRAGMENT_INDEX_BYTES_2
-+					(sblk->fragments) |
-+					SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments))) {
-+		ERROR("unable to read fragment index table\n");
-+		return 0;
-+	}
-+
-+	if (msblk->swap) {
-+		int i;
-+		unsigned int fragment;
-+
-+		for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES_2(sblk->fragments);
-+									i++) {
-+			SQUASHFS_SWAP_FRAGMENT_INDEXES_2((&fragment),
-+						&msblk->fragment_index_2[i], 1);
-+			msblk->fragment_index_2[i] = fragment;
-+		}
-+	}
-+
-+	return 1;
-+}
-+
-+
-+static int get_fragment_location_2(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_2[SQUASHFS_FRAGMENT_INDEX_2(fragment)];
-+	int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET_2(fragment);
-+	struct squashfs_fragment_entry_2 fragment_entry;
-+
-+	if (msblk->swap) {
-+		struct squashfs_fragment_entry_2 sfragment_entry;
-+
-+		if (!squashfs_get_cached_block(s, (char *) &sfragment_entry,
-+					start_block, offset,
-+					sizeof(sfragment_entry), &start_block,
-+					&offset))
-+			goto out;
-+		SQUASHFS_SWAP_FRAGMENT_ENTRY_2(&fragment_entry, &sfragment_entry);
-+	} else
-+		if (!squashfs_get_cached_block(s, (char *) &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;
-+}
-+
-+
-+static void squashfs_new_inode(struct squashfs_sb_info *msblk, struct inode *i,
-+		struct squashfs_base_inode_header_2 *inodeb, unsigned int ino)
-+{
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+
-+	i->i_ino = ino;
-+	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_mode = inodeb->mode;
-+	i->i_nlink = 1;
-+	i->i_size = 0;
-+	if (inodeb->guid == SQUASHFS_GUIDS)
-+		i->i_gid = i->i_uid;
-+	else
-+		i->i_gid = msblk->guid[inodeb->guid];
-+}
-+
-+
-+static int squashfs_read_inode_2(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;
-+	unsigned int block = SQUASHFS_INODE_BLK(inode) +
-+		sblk->inode_table_start;
-+	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
-+	unsigned int ino = i->i_ino;
-+	long long next_block;
-+	unsigned int next_offset;
-+	union squashfs_inode_header_2 id, sid;
-+	struct squashfs_base_inode_header_2 *inodeb = &id.base,
-+					  *sinodeb = &sid.base;
-+
-+	TRACE("Entered squashfs_iget\n");
-+
-+	if (msblk->swap) {
-+		if (!squashfs_get_cached_block(s, (char *) sinodeb, block,
-+					offset, sizeof(*sinodeb), &next_block,
-+					&next_offset))
-+			goto failed_read;
-+		SQUASHFS_SWAP_BASE_INODE_HEADER_2(inodeb, sinodeb,
-+					sizeof(*sinodeb));
-+	} else
-+		if (!squashfs_get_cached_block(s, (char *) inodeb, block,
-+					offset, sizeof(*inodeb), &next_block,
-+					&next_offset))
-+			goto failed_read;
-+
-+	squashfs_new_inode(msblk, i, inodeb, ino);
-+
-+	switch(inodeb->inode_type) {
-+		case SQUASHFS_FILE_TYPE: {
-+			struct squashfs_reg_inode_header_2 *inodep = &id.reg;
-+			struct squashfs_reg_inode_header_2 *sinodep = &sid.reg;
-+			long long frag_blk;
-+			unsigned int frag_size = 0;
-+				
-+			if (msblk->swap) {
-+				if (!squashfs_get_cached_block(s, (char *)
-+						sinodep, block, offset,
-+						sizeof(*sinodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+				SQUASHFS_SWAP_REG_INODE_HEADER_2(inodep, sinodep);
-+			} else
-+				if (!squashfs_get_cached_block(s, (char *)
-+						inodep, block, offset,
-+						sizeof(*inodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+
-+			frag_blk = SQUASHFS_INVALID_BLK;
-+			if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
-+					!get_fragment_location_2(s,
-+					inodep->fragment, &frag_blk, &frag_size))
-+				goto failed_read;
-+				
-+			i->i_size = inodep->file_size;
-+			i->i_fop = &generic_ro_fops;
-+			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;
-+			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;
-+			if (sblk->block_size > 4096)
-+				i->i_data.a_ops = &squashfs_aops;
-+			else
-+				i->i_data.a_ops = &squashfs_aops_4K;
-+
-+			TRACE("File inode %x:%x, start_block %x, "
-+					"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_2 *inodep = &id.dir;
-+			struct squashfs_dir_inode_header_2 *sinodep = &sid.dir;
-+
-+			if (msblk->swap) {
-+				if (!squashfs_get_cached_block(s, (char *)
-+						sinodep, block, offset,
-+						sizeof(*sinodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+				SQUASHFS_SWAP_DIR_INODE_HEADER_2(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_2;
-+			i->i_fop = &squashfs_dir_ops_2;
-+			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;
-+			SQUASHFS_I(i)->u.s2.parent_inode = 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: {
-+			struct squashfs_ldir_inode_header_2 *inodep = &id.ldir;
-+			struct squashfs_ldir_inode_header_2 *sinodep = &sid.ldir;
-+
-+			if (msblk->swap) {
-+				if (!squashfs_get_cached_block(s, (char *)
-+						sinodep, block, offset,
-+						sizeof(*sinodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+				SQUASHFS_SWAP_LDIR_INODE_HEADER_2(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_2;
-+			i->i_fop = &squashfs_dir_ops_2;
-+			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;
-+			SQUASHFS_I(i)->u.s2.parent_inode = 0;
-+
-+			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_2 *inodep =
-+								&id.symlink;
-+			struct squashfs_symlink_inode_header_2 *sinodep =
-+								&sid.symlink;
-+	
-+			if (msblk->swap) {
-+				if (!squashfs_get_cached_block(s, (char *)
-+						sinodep, block, offset,
-+						sizeof(*sinodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+				SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(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 %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_2 *inodep = &id.dev;
-+			struct squashfs_dev_inode_header_2 *sinodep = &sid.dev;
-+
-+			if (msblk->swap) {
-+				if (!squashfs_get_cached_block(s, (char *)
-+						sinodep, block, offset,
-+						sizeof(*sinodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+				SQUASHFS_SWAP_DEV_INODE_HEADER_2(inodep, sinodep);
-+			} else	
-+				if (!squashfs_get_cached_block(s, (char *)
-+						inodep, block, offset,
-+						sizeof(*inodep), &next_block,
-+						&next_offset))
-+					goto failed_read;
-+
-+			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_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 [%x:%x]\n", block, offset);
-+
-+failed_read1:
-+	return 0;
-+}
-+
-+
-+static int get_dir_index_using_offset(struct super_block *s, long long 
-+				*next_block, unsigned int *next_offset,
-+				long long index_start,
-+				unsigned int index_offset, int i_count,
-+				long long f_pos)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	int i, length = 0;
-+	struct squashfs_dir_index_2 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)
-+		goto finish;
-+
-+	for (i = 0; i < i_count; i++) {
-+		if (msblk->swap) {
-+			struct squashfs_dir_index_2 sindex;
-+			squashfs_get_cached_block(s, (char *) &sindex,
-+					index_start, index_offset,
-+					sizeof(sindex), &index_start,
-+					&index_offset);
-+			SQUASHFS_SWAP_DIR_INDEX_2(&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;
-+
-+finish:
-+	return length;
-+}
-+
-+
-+static int get_dir_index_using_name(struct super_block *s, long long
-+				*next_block, unsigned int *next_offset,
-+				long long index_start,
-+				unsigned int index_offset, int i_count,
-+				const char *name, int size)
-+{
-+	struct squashfs_sb_info *msblk = s->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	int i, length = 0;
-+	struct squashfs_dir_index_2 *index;
-+	char *str;
-+
-+	TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
-+
-+	if (!(str = kmalloc(sizeof(struct squashfs_dir_index) +
-+		(SQUASHFS_NAME_LEN + 1) * 2, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_index\n");
-+		goto failure;
-+	}
-+
-+	index = (struct squashfs_dir_index_2 *) (str + SQUASHFS_NAME_LEN + 1);
-+	strncpy(str, name, size);
-+	str[size] = '\0';
-+
-+	for (i = 0; i < i_count; i++) {
-+		if (msblk->swap) {
-+			struct squashfs_dir_index_2 sindex;
-+			squashfs_get_cached_block(s, (char *) &sindex,
-+					index_start, index_offset,
-+					sizeof(sindex), &index_start,
-+					&index_offset);
-+			SQUASHFS_SWAP_DIR_INDEX_2(index, &sindex);
-+		} else
-+			squashfs_get_cached_block(s, (char *) index,
-+					index_start, index_offset,
-+					sizeof(struct squashfs_dir_index_2),
-+					&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;
-+	kfree(str);
-+failure:
-+	return length;
-+}
-+
-+		
-+static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir)
-+{
-+	struct inode *i = file->f_dentry->d_inode;
-+	struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	long long next_block = SQUASHFS_I(i)->start_block +
-+		sblk->directory_table_start;
-+	int next_offset = SQUASHFS_I(i)->offset, length = 0,
-+		dir_count;
-+	struct squashfs_dir_header_2 dirh;
-+	struct squashfs_dir_entry_2 *dire;
-+
-+	TRACE("Entered squashfs_readdir_2 [%llx:%x]\n", next_block, next_offset);
-+
-+	if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) +
-+		SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_entry\n");
-+		goto finish;
-+	}
-+
-+	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_size_read(i)) {
-+		/* read directory header */
-+		if (msblk->swap) {
-+			struct squashfs_dir_header_2 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_2(&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) {
-+				struct squashfs_dir_entry_2 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_2(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");
-+				goto finish;
-+			}
-+			file->f_pos = length;
-+		}
-+	}
-+
-+finish:
-+	kfree(dire);
-+	return 0;
-+
-+failed_read:
-+	ERROR("Unable to read directory block [%llx:%x]\n", next_block,
-+		next_offset);
-+	kfree(dire);
-+	return 0;
-+}
-+
-+
-+static struct dentry *squashfs_lookup_2(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;
-+	struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+	long long next_block = SQUASHFS_I(i)->start_block +
-+				sblk->directory_table_start;
-+	int next_offset = SQUASHFS_I(i)->offset, length = 0,
-+				dir_count;
-+	struct squashfs_dir_header_2 dirh;
-+	struct squashfs_dir_entry_2 *dire;
-+	int sorted = sblk->s_major == 2 && sblk->s_minor >= 1;
-+
-+	TRACE("Entered squashfs_lookup_2 [%llx:%x]\n", next_block, next_offset);
-+
-+	if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) +
-+		SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) {
-+		ERROR("Failed to allocate squashfs_dir_entry\n");
-+		goto exit_loop;
-+	}
-+
-+	if (len > SQUASHFS_NAME_LEN)
-+		goto exit_loop;
-+
-+	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_size_read(i)) {
-+		/* read directory header */
-+		if (msblk->swap) {
-+			struct squashfs_dir_header_2 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_2(&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) {
-+				struct squashfs_dir_entry_2 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_2(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 (sorted && name[0] < dire->name[0])
-+				goto exit_loop;
-+
-+			if ((len == dire->size + 1) && !strncmp(name,
-+						dire->name, len)) {
-+				squashfs_inode_t ino =
-+					SQUASHFS_MKINODE(dirh.start_block,
-+					dire->offset);
-+				unsigned int inode_number = SQUASHFS_MK_VFS_INODE(dirh.start_block,
-+					dire->offset);
-+
-+				TRACE("calling squashfs_iget for directory "
-+					"entry %s, inode %x:%x, %lld\n", name,
-+					dirh.start_block, dire->offset, ino);
-+
-+				inode = squashfs_iget(i->i_sb, ino, inode_number);
-+
-+				goto exit_loop;
-+			}
-+		}
-+	}
-+
-+exit_loop:
-+	kfree(dire);
-+	d_add(dentry, inode);
-+	return ERR_PTR(0);
-+
-+failed_read:
-+	ERROR("Unable to read directory block [%llx:%x]\n", next_block,
-+		next_offset);
-+	goto exit_loop;
-+}
-+
-+
-+int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
-+{
-+	struct squashfs_super_block *sblk = &msblk->sblk;
-+
-+	msblk->read_inode = squashfs_read_inode_2;
-+	msblk->read_fragment_index_table = read_fragment_index_table_2;
-+
-+	sblk->bytes_used = sblk->bytes_used_2;
-+	sblk->uid_start = sblk->uid_start_2;
-+	sblk->guid_start = sblk->guid_start_2;
-+	sblk->inode_table_start = sblk->inode_table_start_2;
-+	sblk->directory_table_start = sblk->directory_table_start_2;
-+	sblk->fragment_table_start = sblk->fragment_table_start_2;
-+
-+	return 1;
-+}
-diff -x .gitignore -Nurp linux-2.6.20/fs/squashfs/squashfs.h linux-2.6.20-squashfs3.2-r2/fs/squashfs/squashfs.h
---- linux-2.6.20/fs/squashfs/squashfs.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/fs/squashfs/squashfs.h	2007-01-12 01:42:11.000000000 +0000
-@@ -0,0 +1,87 @@
-+/*
-+ * Squashfs - a compressed read only filesystem for Linux
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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.h
-+ */
-+
-+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
-+#undef CONFIG_SQUASHFS_1_0_COMPATIBILITY
-+#endif
-+
-+#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...)	do { \
-+				if (!silent) \
-+				printk(KERN_ERR "SQUASHFS error: "s, ## args);\
-+				} while(0)
-+
-+#define WARNING(s, args...)	printk(KERN_WARNING "SQUASHFS: "s, ## args)
-+
-+static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
-+{
-+	return list_entry(inode, struct squashfs_inode_info, vfs_inode);
-+}
-+
-+#if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY)
-+#define SQSH_EXTERN
-+extern unsigned int squashfs_read_data(struct super_block *s, char *buffer,
-+				long long index, unsigned int length,
-+				long long *next_index, int srclength);
-+extern int squashfs_get_cached_block(struct super_block *s, char *buffer,
-+				long long block, unsigned int offset,
-+				int length, long long *next_block,
-+				unsigned int *next_offset);
-+extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct
-+					squashfs_fragment_cache *fragment);
-+extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block
-+					*s, long long start_block,
-+					int length);
-+extern struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode, unsigned int inode_number);
-+extern const struct address_space_operations squashfs_symlink_aops;
-+extern const struct address_space_operations squashfs_aops;
-+extern const struct address_space_operations squashfs_aops_4K;
-+extern struct inode_operations squashfs_dir_inode_ops;
-+#else
-+#define SQSH_EXTERN static
-+#endif
-+
-+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
-+extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk);
-+#else
-+static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk)
-+{
-+	return 0;
-+}
-+#endif
-+
-+#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
-+extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk);
-+#else
-+static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
-+{
-+	return 0;
-+}
-+#endif
-diff -x .gitignore -Nurp linux-2.6.20/include/linux/squashfs_fs.h linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs.h
---- linux-2.6.20/include/linux/squashfs_fs.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs.h	2007-01-12 00:06:09.000000000 +0000
-@@ -0,0 +1,934 @@
-+#ifndef SQUASHFS_FS
-+#define SQUASHFS_FS
-+
-+/*
-+ * Squashfs
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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
-+ */
-+
-+#ifndef CONFIG_SQUASHFS_2_0_COMPATIBILITY
-+#define CONFIG_SQUASHFS_2_0_COMPATIBILITY
-+#endif
-+
-+#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			3
-+#define SQUASHFS_MINOR			0
-+#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_FRAG		((unsigned int) 0xffffffff)
-+#define SQUASHFS_INVALID_BLK		((long long) -1)
-+#define SQUASHFS_USED_BLK		((long long) -2)
-+
-+/* 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_EXPORT			7
-+
-+#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_EXPORTABLE(flags)		SQUASHFS_BIT(flags, \
-+						SQUASHFS_EXPORT)
-+
-+#define SQUASHFS_CHECK_DATA(flags)		SQUASHFS_BIT(flags, \
-+						SQUASHFS_CHECK)
-+
-+#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \
-+		duplicate_checking, exortable)	(noi | (nod << 1) | (check_data << 2) \
-+		| (nof << 3) | (no_frag << 4) | (always_frag << 5) | \
-+		(duplicate_checking << 6) | (exportable << 7))
-+
-+/* 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
-+#define SQUASHFS_LREG_TYPE		9
-+
-+/* 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_t)(((squashfs_inode_t) (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))
-+/* XXX */
-+
-+/* Translate between VFS mode and squashfs mode */
-+#define SQUASHFS_MODE(a)		((a) & 0xfff)
-+
-+/* fragment and fragment table defines */
-+#define SQUASHFS_FRAGMENT_BYTES(A)	((A) * sizeof(struct 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(long long))
-+
-+/* inode lookup table defines */
-+#define SQUASHFS_LOOKUP_BYTES(A)	((A) * sizeof(squashfs_inode_t))
-+
-+#define SQUASHFS_LOOKUP_BLOCK(A)		(SQUASHFS_LOOKUP_BYTES(A) / \
-+						SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_LOOKUP_BLOCK_OFFSET(A)		(SQUASHFS_LOOKUP_BYTES(A) % \
-+						SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_LOOKUP_BLOCKS(A)	((SQUASHFS_LOOKUP_BYTES(A) + \
-+					SQUASHFS_METADATA_SIZE - 1) / \
-+					SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_LOOKUP_BLOCK_BYTES(A)	(SQUASHFS_LOOKUP_BLOCKS(A) *\
-+					sizeof(long long))
-+
-+/* cached data constants for filesystem */
-+#define SQUASHFS_CACHED_BLKS		8
-+
-+#define SQUASHFS_MAX_FILE_SIZE_LOG	64
-+
-+#define SQUASHFS_MAX_FILE_SIZE		((long long) 1 << \
-+					(SQUASHFS_MAX_FILE_SIZE_LOG - 2))
-+
-+#define SQUASHFS_MARKER_BYTE		0xff
-+
-+/* meta index cache */
-+#define SQUASHFS_META_INDEXES	(SQUASHFS_METADATA_SIZE / sizeof(unsigned int))
-+#define SQUASHFS_META_ENTRIES	31
-+#define SQUASHFS_META_NUMBER	8
-+#define SQUASHFS_SLOTS		4
-+
-+struct meta_entry {
-+	long long		data_block;
-+	unsigned int		index_block;
-+	unsigned short		offset;
-+	unsigned short		pad;
-+};
-+
-+struct meta_index {
-+	unsigned int		inode_number;
-+	unsigned int		offset;
-+	unsigned short		entries;
-+	unsigned short		skip;
-+	unsigned short		locked;
-+	unsigned short		pad;
-+	struct meta_entry	meta_entry[SQUASHFS_META_ENTRIES];
-+};
-+
-+
-+/*
-+ * definitions for structures on disk
-+ */
-+
-+typedef long long		squashfs_block_t;
-+typedef long long		squashfs_inode_t;
-+
-+struct squashfs_super_block {
-+	unsigned int		s_magic;
-+	unsigned int		inodes;
-+	unsigned int		bytes_used_2;
-+	unsigned int		uid_start_2;
-+	unsigned int		guid_start_2;
-+	unsigned int		inode_table_start_2;
-+	unsigned int		directory_table_start_2;
-+	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_t	root_inode;
-+	unsigned int		block_size;
-+	unsigned int		fragments;
-+	unsigned int		fragment_table_start_2;
-+	long long		bytes_used;
-+	long long		uid_start;
-+	long long		guid_start;
-+	long long		inode_table_start;
-+	long long		directory_table_start;
-+	long long		fragment_table_start;
-+	long long		lookup_table_start;
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_index {
-+	unsigned int		index;
-+	unsigned int		start_block;
-+	unsigned char		size;
-+	unsigned char		name[0];
-+} __attribute__ ((packed));
-+
-+#define SQUASHFS_BASE_INODE_HEADER		\
-+	unsigned int		inode_type:4;	\
-+	unsigned int		mode:12;	\
-+	unsigned int		uid:8;		\
-+	unsigned int		guid:8;		\
-+	unsigned int		mtime;		\
-+	unsigned int 		inode_number;
-+
-+struct squashfs_base_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+} __attribute__ ((packed));
-+
-+struct squashfs_ipc_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+} __attribute__ ((packed));
-+
-+struct squashfs_dev_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+	unsigned short		rdev;
-+} __attribute__ ((packed));
-+	
-+struct squashfs_symlink_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+	unsigned short		symlink_size;
-+	char			symlink[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_reg_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	squashfs_block_t	start_block;
-+	unsigned int		fragment;
-+	unsigned int		offset;
-+	unsigned int		file_size;
-+	unsigned short		block_list[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_lreg_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+	squashfs_block_t	start_block;
-+	unsigned int		fragment;
-+	unsigned int		offset;
-+	long long		file_size;
-+	unsigned short		block_list[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+	unsigned int		file_size:19;
-+	unsigned int		offset:13;
-+	unsigned int		start_block;
-+	unsigned int		parent_inode;
-+} __attribute__  ((packed));
-+
-+struct squashfs_ldir_inode_header {
-+	SQUASHFS_BASE_INODE_HEADER;
-+	unsigned int		nlink;
-+	unsigned int		file_size:27;
-+	unsigned int		offset:13;
-+	unsigned int		start_block;
-+	unsigned int		i_count:16;
-+	unsigned int		parent_inode;
-+	struct squashfs_dir_index	index[0];
-+} __attribute__  ((packed));
-+
-+union squashfs_inode_header {
-+	struct squashfs_base_inode_header	base;
-+	struct squashfs_dev_inode_header	dev;
-+	struct squashfs_symlink_inode_header	symlink;
-+	struct squashfs_reg_inode_header	reg;
-+	struct squashfs_lreg_inode_header	lreg;
-+	struct squashfs_dir_inode_header	dir;
-+	struct squashfs_ldir_inode_header	ldir;
-+	struct squashfs_ipc_inode_header	ipc;
-+};
-+	
-+struct squashfs_dir_entry {
-+	unsigned int		offset:13;
-+	unsigned int		type:3;
-+	unsigned int		size:8;
-+	int			inode_number:16;
-+	char			name[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_header {
-+	unsigned int		count:8;
-+	unsigned int		start_block;
-+	unsigned int		inode_number;
-+} __attribute__ ((packed));
-+
-+struct squashfs_fragment_entry {
-+	long long		start_block;
-+	unsigned int		size;
-+	unsigned int		pending;
-+} __attribute__ ((packed));
-+
-+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_START \
-+	int bits;\
-+	int b_pos;\
-+	unsigned long long val;\
-+	unsigned char *s;\
-+	unsigned char *d;
-+
-+#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block));\
-+	SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\
-+	SQUASHFS_SWAP((s)->inodes, d, 32, 32);\
-+	SQUASHFS_SWAP((s)->bytes_used_2, d, 64, 32);\
-+	SQUASHFS_SWAP((s)->uid_start_2, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->guid_start_2, d, 128, 32);\
-+	SQUASHFS_SWAP((s)->inode_table_start_2, d, 160, 32);\
-+	SQUASHFS_SWAP((s)->directory_table_start_2, 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_2, d, 472, 32);\
-+	SQUASHFS_SWAP((s)->bytes_used, d, 504, 64);\
-+	SQUASHFS_SWAP((s)->uid_start, d, 568, 64);\
-+	SQUASHFS_SWAP((s)->guid_start, d, 632, 64);\
-+	SQUASHFS_SWAP((s)->inode_table_start, d, 696, 64);\
-+	SQUASHFS_SWAP((s)->directory_table_start, d, 760, 64);\
-+	SQUASHFS_SWAP((s)->fragment_table_start, d, 824, 64);\
-+	SQUASHFS_SWAP((s)->lookup_table_start, d, 888, 64);\
-+}
-+
-+#define SQUASHFS_SWAP_BASE_INODE_CORE(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);\
-+	SQUASHFS_SWAP((s)->mtime, d, 32, 32);\
-+	SQUASHFS_SWAP((s)->inode_number, d, 64, 32);
-+
-+#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\
-+}
-+
-+#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_ipc_inode_header))\
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_dev_inode_header)); \
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->rdev, d, 128, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_symlink_inode_header));\
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_reg_inode_header));\
-+	SQUASHFS_SWAP((s)->start_block, d, 96, 64);\
-+	SQUASHFS_SWAP((s)->fragment, d, 160, 32);\
-+	SQUASHFS_SWAP((s)->offset, d, 192, 32);\
-+	SQUASHFS_SWAP((s)->file_size, d, 224, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_LREG_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_lreg_inode_header));\
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->start_block, d, 128, 64);\
-+	SQUASHFS_SWAP((s)->fragment, d, 192, 32);\
-+	SQUASHFS_SWAP((s)->offset, d, 224, 32);\
-+	SQUASHFS_SWAP((s)->file_size, d, 256, 64);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_dir_inode_header));\
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->file_size, d, 128, 19);\
-+	SQUASHFS_SWAP((s)->offset, d, 147, 13);\
-+	SQUASHFS_SWAP((s)->start_block, d, 160, 32);\
-+	SQUASHFS_SWAP((s)->parent_inode, d, 192, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
-+			sizeof(struct squashfs_ldir_inode_header));\
-+	SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
-+	SQUASHFS_SWAP((s)->file_size, d, 128, 27);\
-+	SQUASHFS_SWAP((s)->offset, d, 155, 13);\
-+	SQUASHFS_SWAP((s)->start_block, d, 168, 32);\
-+	SQUASHFS_SWAP((s)->i_count, d, 200, 16);\
-+	SQUASHFS_SWAP((s)->parent_inode, d, 216, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index));\
-+	SQUASHFS_SWAP((s)->index, d, 0, 32);\
-+	SQUASHFS_SWAP((s)->start_block, d, 32, 32);\
-+	SQUASHFS_SWAP((s)->size, d, 64, 8);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header));\
-+	SQUASHFS_SWAP((s)->count, d, 0, 8);\
-+	SQUASHFS_SWAP((s)->start_block, d, 8, 32);\
-+	SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry));\
-+	SQUASHFS_SWAP((s)->offset, d, 0, 13);\
-+	SQUASHFS_SWAP((s)->type, d, 13, 3);\
-+	SQUASHFS_SWAP((s)->size, d, 16, 8);\
-+	SQUASHFS_SWAP((s)->inode_number, d, 24, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry));\
-+	SQUASHFS_SWAP((s)->start_block, d, 0, 64);\
-+	SQUASHFS_SWAP((s)->size, d, 64, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_INODE_T(s, d) SQUASHFS_SWAP_LONG_LONGS(s, d, 1)
-+
-+#define SQUASHFS_SWAP_SHORTS(s, d, n) {\
-+	int entry;\
-+	int bit_position;\
-+	SQUASHFS_SWAP_START\
-+	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_SWAP_START\
-+	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_LONG_LONGS(s, d, n) {\
-+	int entry;\
-+	int bit_position;\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, n * 8);\
-+	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \
-+			64)\
-+		SQUASHFS_SWAP(s[entry], d, bit_position, 64);\
-+}
-+
-+#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\
-+	int entry;\
-+	int bit_position;\
-+	SQUASHFS_SWAP_START\
-+	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_LONG_LONGS(s, d, n)
-+#define SQUASHFS_SWAP_LOOKUP_BLOCKS(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n)
-+
-+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
-+
-+struct squashfs_base_inode_header_1 {
-+	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));
-+
-+struct squashfs_ipc_inode_header_1 {
-+	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));
-+
-+struct squashfs_dev_inode_header_1 {
-+	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));
-+	
-+struct squashfs_symlink_inode_header_1 {
-+	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));
-+
-+struct squashfs_reg_inode_header_1 {
-+	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;
-+	unsigned int		start_block;
-+	unsigned int		file_size:32;
-+	unsigned short		block_list[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_inode_header_1 {
-+	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));
-+
-+#define SQUASHFS_SWAP_BASE_INODE_CORE_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_BASE_INODE_HEADER_1(s, d, n) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n)\
-+}
-+
-+#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
-+			sizeof(struct 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_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
-+			sizeof(struct squashfs_dev_inode_header_1));\
-+	SQUASHFS_SWAP((s)->rdev, d, 24, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
-+			sizeof(struct squashfs_symlink_inode_header_1));\
-+	SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
-+			sizeof(struct 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, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
-+			sizeof(struct 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 CONFIG_SQUASHFS_2_0_COMPATIBILITY
-+
-+struct squashfs_dir_index_2 {
-+	unsigned int		index:27;
-+	unsigned int		start_block:29;
-+	unsigned char		size;
-+	unsigned char		name[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_base_inode_header_2 {
-+	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));
-+
-+struct squashfs_ipc_inode_header_2 {
-+	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));
-+
-+struct squashfs_dev_inode_header_2 {
-+	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));
-+	
-+struct squashfs_symlink_inode_header_2 {
-+	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));
-+
-+struct squashfs_reg_inode_header_2 {
-+	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;
-+	unsigned int		start_block;
-+	unsigned int		fragment;
-+	unsigned int		offset;
-+	unsigned int		file_size:32;
-+	unsigned short		block_list[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_inode_header_2 {
-+	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));
-+
-+struct squashfs_ldir_inode_header_2 {
-+	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;
-+	struct squashfs_dir_index_2	index[0];
-+} __attribute__  ((packed));
-+
-+union squashfs_inode_header_2 {
-+	struct squashfs_base_inode_header_2	base;
-+	struct squashfs_dev_inode_header_2	dev;
-+	struct squashfs_symlink_inode_header_2	symlink;
-+	struct squashfs_reg_inode_header_2	reg;
-+	struct squashfs_dir_inode_header_2	dir;
-+	struct squashfs_ldir_inode_header_2	ldir;
-+	struct squashfs_ipc_inode_header_2	ipc;
-+};
-+	
-+struct squashfs_dir_header_2 {
-+	unsigned int		count:8;
-+	unsigned int		start_block:24;
-+} __attribute__ ((packed));
-+
-+struct squashfs_dir_entry_2 {
-+	unsigned int		offset:13;
-+	unsigned int		type:3;
-+	unsigned int		size:8;
-+	char			name[0];
-+} __attribute__ ((packed));
-+
-+struct squashfs_fragment_entry_2 {
-+	unsigned int		start_block;
-+	unsigned int		size;
-+} __attribute__ ((packed));
-+
-+#define SQUASHFS_SWAP_BASE_INODE_CORE_2(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_BASE_INODE_HEADER_2(s, d, n) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\
-+}
-+
-+#define SQUASHFS_SWAP_IPC_INODE_HEADER_2(s, d) \
-+	SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, sizeof(struct squashfs_ipc_inode_header_2))
-+
-+#define SQUASHFS_SWAP_DEV_INODE_HEADER_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
-+			sizeof(struct squashfs_dev_inode_header_2)); \
-+	SQUASHFS_SWAP((s)->rdev, d, 32, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
-+			sizeof(struct squashfs_symlink_inode_header_2));\
-+	SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\
-+}
-+
-+#define SQUASHFS_SWAP_REG_INODE_HEADER_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
-+			sizeof(struct squashfs_reg_inode_header_2));\
-+	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, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_INODE_HEADER_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
-+			sizeof(struct squashfs_dir_inode_header_2));\
-+	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_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
-+			sizeof(struct squashfs_ldir_inode_header_2));\
-+	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_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_2));\
-+	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_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_2));\
-+	SQUASHFS_SWAP((s)->count, d, 0, 8);\
-+	SQUASHFS_SWAP((s)->start_block, d, 8, 24);\
-+}
-+
-+#define SQUASHFS_SWAP_DIR_ENTRY_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_2));\
-+	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_2(s, d) {\
-+	SQUASHFS_SWAP_START\
-+	SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_2));\
-+	SQUASHFS_SWAP((s)->start_block, d, 0, 32);\
-+	SQUASHFS_SWAP((s)->size, d, 32, 32);\
-+}
-+
-+#define SQUASHFS_SWAP_FRAGMENT_INDEXES_2(s, d, n) SQUASHFS_SWAP_INTS(s, d, n)
-+
-+/* fragment and fragment table defines */
-+#define SQUASHFS_FRAGMENT_BYTES_2(A)	(A * sizeof(struct squashfs_fragment_entry_2))
-+
-+#define SQUASHFS_FRAGMENT_INDEX_2(A)	(SQUASHFS_FRAGMENT_BYTES_2(A) / \
-+					SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_FRAGMENT_INDEX_OFFSET_2(A)	(SQUASHFS_FRAGMENT_BYTES_2(A) % \
-+						SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_FRAGMENT_INDEXES_2(A)	((SQUASHFS_FRAGMENT_BYTES_2(A) + \
-+					SQUASHFS_METADATA_SIZE - 1) / \
-+					SQUASHFS_METADATA_SIZE)
-+
-+#define SQUASHFS_FRAGMENT_INDEX_BYTES_2(A)	(SQUASHFS_FRAGMENT_INDEXES_2(A) *\
-+						sizeof(int))
-+
-+#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) {\
-+	b_pos = pos % 8;\
-+	val = 0;\
-+	s = (unsigned char *)p + (pos / 8);\
-+	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 -x .gitignore -Nurp linux-2.6.20/include/linux/squashfs_fs_i.h linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs_i.h
---- linux-2.6.20/include/linux/squashfs_fs_i.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs_i.h	2007-01-12 00:06:09.000000000 +0000
-@@ -0,0 +1,45 @@
-+#ifndef SQUASHFS_FS_I
-+#define SQUASHFS_FS_I
-+/*
-+ * Squashfs
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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
-+ */
-+
-+struct squashfs_inode_info {
-+	long long	start_block;
-+	unsigned int	offset;
-+	union {
-+		struct {
-+			long long	fragment_start_block;
-+			unsigned int	fragment_size;
-+			unsigned int	fragment_offset;
-+			long long	block_list_start;
-+		} s1;
-+		struct {
-+			long long	directory_index_start;
-+			unsigned int	directory_index_offset;
-+			unsigned int	directory_index_count;
-+			unsigned int	parent_inode;
-+		} s2;
-+	} u;
-+	struct inode	vfs_inode;
-+};
-+#endif
-diff -x .gitignore -Nurp linux-2.6.20/include/linux/squashfs_fs_sb.h linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs_sb.h
---- linux-2.6.20/include/linux/squashfs_fs_sb.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.20-squashfs3.2-r2/include/linux/squashfs_fs_sb.h	2007-01-12 01:23:47.000000000 +0000
-@@ -0,0 +1,74 @@
-+#ifndef SQUASHFS_FS_SB
-+#define SQUASHFS_FS_SB
-+/*
-+ * Squashfs
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007
-+ * Phillip Lougher <phillip at lougher.org.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>
-+
-+struct squashfs_cache {
-+	long long	block;
-+	int		length;
-+	long long	next_index;
-+	char		*data;
-+};
-+
-+struct squashfs_fragment_cache {
-+	long long	block;
-+	int		length;
-+	unsigned int	locked;
-+	char		*data;
-+};
-+
-+struct squashfs_sb_info {
-+	struct squashfs_super_block	sblk;
-+	int			devblksize;
-+	int			devblksize_log2;
-+	int			swap;
-+	struct squashfs_cache	*block_cache;
-+	struct squashfs_fragment_cache	*fragment;
-+	int			next_cache;
-+	int			next_fragment;
-+	int			next_meta_index;
-+	unsigned int		*uid;
-+	unsigned int		*guid;
-+	long long		*fragment_index;
-+	unsigned int		*fragment_index_2;
-+	char			*read_page;
-+	struct mutex		read_data_mutex;
-+	struct mutex		read_page_mutex;
-+	struct mutex		block_cache_mutex;
-+	struct mutex		fragment_mutex;
-+	struct mutex		meta_index_mutex;
-+	wait_queue_head_t	waitq;
-+	wait_queue_head_t	fragment_wait_queue;
-+	struct meta_index	*meta_index;
-+	z_stream		stream;
-+	long long		*inode_lookup_table;
-+	int			(*read_inode)(struct inode *i,  squashfs_inode_t \
-+				inode);
-+	long long		(*read_blocklist)(struct inode *inode, int \
-+				index, int readahead_blks, char *block_list, \
-+				unsigned short **block_p, unsigned int *bsize);
-+	int			(*read_fragment_index_table)(struct super_block *s);
-+};
-+#endif
-diff -x .gitignore -Nurp linux-2.6.20/init/do_mounts_rd.c linux-2.6.20-squashfs3.2-r2/init/do_mounts_rd.c
---- linux-2.6.20/init/do_mounts_rd.c	2006-11-29 21:57:37.000000000 +0000
-+++ linux-2.6.20-squashfs3.2-r2/init/do_mounts_rd.c	2007-01-16 02:06:03.000000000 +0000
-@@ -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 +105,18 @@ 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);
-+		if (squashfsb->s_major < 3)
-+			nblocks = (squashfsb->bytes_used_2+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
-+		else
-+			nblocks = (squashfsb->bytes_used+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
-+		goto done;
-+	}
-+
- 	/*
- 	 * Read block 1 to test for minix and ext2 superblock
- 	 */
rmfile ./source/base-extra/kernel-fwlive/squashfs3.2-patch
}


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