initial commit

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/fs/squashfs/Makefile

@@ -0,0 +1,11 @@
+#
+# Makefile for the linux squashfs routines.
+#
+
+O_TARGET := squashfs.o
+
+obj-y  := inode.o squashfs2_0.o
+
+obj-m := $(O_TARGET)
+
+include $(TOPDIR)/Rules.make

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/fs/squashfs/squashfs.h

@@ -0,0 +1,85 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs.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)
+
+#define SQUASHFS_I(INO)			(&INO->u.squashfs_i)
+
+#define i_size_read(INO)		(INO->i_size)
+
+#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);
+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 address_space_operations squashfs_symlink_aops;
+extern struct address_space_operations squashfs_aops;
+extern struct address_space_operations squashfs_aops_4K;
+extern struct file_operations squashfs_dir_ops;
+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

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/fs/squashfs/squashfs2_0.c

@@ -0,0 +1,751 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs2_0.c
+ */
+
+#include <linux/types.h>
+#include <linux/squashfs_fs.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/zlib.h>
+#include <linux/fs.h>
+#include <linux/smp_lock.h>
+#include <linux/locks.h>
+#include <linux/init.h>
+#include <linux/dcache.h>
+#include <linux/wait.h>
+#include <linux/zlib.h>
+#include <linux/blkdev.h>
+#include <linux/vmalloc.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.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 *i, struct dentry *dentry);
+
+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->u.squashfs_sb;
+	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)) {
+		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->u.squashfs_sb;
+	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 struct inode *squashfs_new_inode(struct super_block *s,
+		struct squashfs_base_inode_header_2 *inodeb, unsigned int ino)
+{
+	struct squashfs_sb_info *msblk = &s->u.squashfs_sb;
+	struct squashfs_super_block *sblk = &msblk->sblk;
+	struct inode *i = new_inode(s);
+
+	if (i) {
+		i->i_ino = ino;
+		i->i_mtime = sblk->mkfs_time;
+		i->i_atime = sblk->mkfs_time;
+		i->i_ctime = 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];
+	}
+
+	return i;
+}
+
+
+static struct inode *squashfs_iget_2(struct super_block *s, squashfs_inode_t inode)
+{
+	struct inode *i;
+	struct squashfs_sb_info *msblk = &s->u.squashfs_sb;
+	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 = SQUASHFS_MK_VFS_INODE(block
+		- sblk->inode_table_start, offset);
+	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;
+
+	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;
+				
+			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;
+				
+			if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			i->i_size = inodep->file_size;
+			i->i_fop = &generic_ro_fops;
+			i->i_mode |= S_IFREG;
+			i->i_mtime = inodep->mtime;
+			i->i_atime = inodep->mtime;
+			i->i_ctime = inodep->mtime;
+			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
+			i->i_blksize = PAGE_CACHE_SIZE;
+			SQUASHFS_I(i)->u.s1.fragment_start_block = 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;
+
+			if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			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 = inodep->mtime;
+			i->i_atime = inodep->mtime;
+			i->i_ctime = 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;
+
+			if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			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 = inodep->mtime;
+			i->i_atime = inodep->mtime;
+			i->i_ctime = 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;
+
+			if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			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;
+
+			if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			i->i_mode |= (inodeb->inode_type ==
+					SQUASHFS_CHRDEV_TYPE) ?  S_IFCHR :
+					S_IFBLK;
+			init_special_inode(i, i->i_mode, 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: {
+			if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
+				goto failed_read1;
+
+			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;
+	}
+	
+	insert_inode_hash(i);
+	return i;
+
+failed_read:
+	ERROR("Unable to read inode [%x:%x]\n", block, offset);
+
+failed_read1:
+	return NULL;
+}
+
+
+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->u.squashfs_sb;
+	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->u.squashfs_sb;
+	struct squashfs_super_block *sblk = &msblk->sblk;
+	int i, length = 0;
+	char buffer[sizeof(struct squashfs_dir_index_2) + SQUASHFS_NAME_LEN + 1];
+	struct squashfs_dir_index_2 *index = (struct squashfs_dir_index_2 *) buffer;
+	char str[SQUASHFS_NAME_LEN + 1];
+
+	TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
+
+	strncpy(str, name, size);
+	str[size] = '\0';
+
+	for (i = 0; i < i_count; i++) {
+		if (msblk->swap) {
+			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;
+	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->u.squashfs_sb;
+	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;
+	char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN + 1];
+	struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer;
+
+	TRACE("Entered squashfs_readdir_2 [%llx:%x]\n", next_block, next_offset);
+
+	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:
+	return 0;
+
+failed_read:
+	ERROR("Unable to read directory block [%llx:%x]\n", next_block,
+		next_offset);
+	return 0;
+}
+
+
+static struct dentry *squashfs_lookup_2(struct inode *i, struct dentry *dentry)
+{
+	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->u.squashfs_sb;
+	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;
+	char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN];
+	struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer;
+	int sorted = sblk->s_major == 2 && sblk->s_minor >= 1;
+
+	TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset);
+
+	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);
+
+				TRACE("calling squashfs_iget for directory "
+					"entry %s, inode %x:%x, %d\n", name,
+					dirh.start_block, dire->offset, ino);
+
+				inode = (msblk->iget)(i->i_sb, ino);
+
+				goto exit_loop;
+			}
+		}
+	}
+
+exit_loop:
+	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->iget = squashfs_iget_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;
+}

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/include/linux/squashfs_fs.h

@@ -0,0 +1,915 @@
+#ifndef SQUASHFS_FS
+#define SQUASHFS_FS
+
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs.h
+ */
+
+#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
+#ifdef CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
+#define SQUASHFS_CACHED_FRAGMENTS	CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
+#else
+#define SQUASHFS_CACHED_FRAGMENTS	3
+#endif
+#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_BIT(flag, bit)		((flag >> bit) & 1)
+
+#define SQUASHFS_UNCOMPRESSED_INODES(flags)	SQUASHFS_BIT(flags, \
+						SQUASHFS_NOI)
+
+#define SQUASHFS_UNCOMPRESSED_DATA(flags)	SQUASHFS_BIT(flags, \
+						SQUASHFS_NOD)
+
+#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags)	SQUASHFS_BIT(flags, \
+						SQUASHFS_NOF)
+
+#define SQUASHFS_NO_FRAGMENTS(flags)		SQUASHFS_BIT(flags, \
+						SQUASHFS_NO_FRAG)
+
+#define SQUASHFS_ALWAYS_FRAGMENTS(flags)	SQUASHFS_BIT(flags, \
+						SQUASHFS_ALWAYS_FRAG)
+
+#define SQUASHFS_DUPLICATES(flags)		SQUASHFS_BIT(flags, \
+						SQUASHFS_DUPLICATE)
+
+#define SQUASHFS_CHECK_DATA(flags)		SQUASHFS_BIT(flags, \
+						SQUASHFS_CHECK)
+
+#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \
+		duplicate_checking)	(noi | (nod << 1) | (check_data << 2) \
+		| (nof << 3) | (no_frag << 4) | (always_frag << 5) | \
+		(duplicate_checking << 6))
+
+/* Max number of types and file types */
+#define SQUASHFS_DIR_TYPE		1
+#define SQUASHFS_FILE_TYPE		2
+#define SQUASHFS_SYMLINK_TYPE		3
+#define SQUASHFS_BLKDEV_TYPE		4
+#define SQUASHFS_CHRDEV_TYPE		5
+#define SQUASHFS_FIFO_TYPE		6
+#define SQUASHFS_SOCKET_TYPE		7
+#define SQUASHFS_LDIR_TYPE		8
+#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))
+
+/* 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		unused;
+} __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		unused;
+} __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)->unused, 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_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)
+
+#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

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/include/linux/squashfs_fs_i.h

@@ -0,0 +1,44 @@
+#ifndef SQUASHFS_FS_I
+#define SQUASHFS_FS_I
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs_i.h
+ */
+
+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;
+};
+#endif

SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/include/linux/squashfs_fs_sb.h

@@ -0,0 +1,76 @@
+#ifndef SQUASHFS_FS_SB
+#define SQUASHFS_FS_SB
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs_sb.h
+ */
+
+#include <linux/squashfs_fs.h>
+#include <linux/zlib.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;
+	unsigned int		read_size;
+	char			*read_data;
+	char			*read_page;
+	struct semaphore	read_data_mutex;
+	struct semaphore	read_page_mutex;
+	struct semaphore	block_cache_mutex;
+	struct semaphore	fragment_mutex;
+	struct semaphore	meta_index_mutex;
+	wait_queue_head_t	waitq;
+	wait_queue_head_t	fragment_wait_queue;
+	struct meta_index	*meta_index;
+	z_stream		stream;
+	struct inode		*(*iget)(struct super_block *s,  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