X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/dab3ca1324288a1abeb32590e1caec8848efe3e0..33d588243377bef87f58e75d9d0286ec1648b1aa:/target/linux/generic-2.6/patches/001-squashfs.patch diff --git a/target/linux/generic-2.6/patches/001-squashfs.patch b/target/linux/generic-2.6/patches/001-squashfs.patch index f51beaac6..e64db466c 100644 --- a/target/linux/generic-2.6/patches/001-squashfs.patch +++ b/target/linux/generic-2.6/patches/001-squashfs.patch @@ -1,19 +1,22 @@ -diff --new-file -urp linux-2.6.12/fs/Kconfig linux-2.6.12-squashfs2.2/fs/Kconfig ---- linux-2.6.12/fs/Kconfig 2005-06-17 20:48:29.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/fs/Kconfig 2005-07-04 02:35:35.000000000 +0100 -@@ -1171,6 +1171,69 @@ config CRAMFS +Index: linux-2.6.21.7/fs/Kconfig +=================================================================== +--- linux-2.6.21.7.orig/fs/Kconfig ++++ linux-2.6.21.7/fs/Kconfig +@@ -1371,6 +1371,71 @@ config CRAMFS If unsure, say N. +config SQUASHFS -+ tristate "SquashFS 2.0 - Squashed file system support" ++ tristate "SquashFS 3.0 - Squashed file system support" + select ZLIB_INFLATE + help -+ Saying Y here includes support for SquashFs 2.0 (Compressed Read-Only File ++ Saying Y here includes support for SquashFS 3.0 (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 3.0 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 @@ -30,7 +33,7 @@ diff --new-file -urp linux-2.6.12/fs/Kconfig linux-2.6.12-squashfs2.2/fs/Kconfig + +config SQUASHFS_EMBEDDED + -+ bool "Additional options for memory-constrained systems" ++ bool "Additional options for memory-constrained systems" + depends on SQUASHFS + default n + help @@ -70,26 +73,29 @@ diff --new-file -urp linux-2.6.12/fs/Kconfig linux-2.6.12-squashfs2.2/fs/Kconfig + config VXFS_FS tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" - help -diff --new-file -urp linux-2.6.12/fs/Makefile linux-2.6.12-squashfs2.2/fs/Makefile ---- linux-2.6.12/fs/Makefile 2005-06-17 20:48:29.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/fs/Makefile 2005-07-04 02:35:35.000000000 +0100 -@@ -52,6 +52,7 @@ obj-$(CONFIG_EXT3_FS) += ext3/ # Before - obj-$(CONFIG_JBD) += jbd/ + depends on BLOCK +Index: linux-2.6.21.7/fs/Makefile +=================================================================== +--- linux-2.6.21.7.orig/fs/Makefile ++++ linux-2.6.21.7/fs/Makefile +@@ -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 --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/fs/squashfs/inode.c ---- linux-2.6.12/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/fs/squashfs/inode.c 2005-07-04 02:35:35.000000000 +0100 -@@ -0,0 +1,1803 @@ +Index: linux-2.6.21.7/fs/squashfs/inode.c +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/fs/squashfs/inode.c +@@ -0,0 +1,2124 @@ +/* + * Squashfs - a compressed read only filesystem for Linux + * -+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License @@ -108,8 +114,6 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + * inode.c + */ + -+#define SQUASHFS_1_0_COMPATIBILITY -+ +#include +#include +#include @@ -124,54 +128,34 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +#include +#include +#include -+#include +#include -+#include +#include +#include +#include ++#include ++#include + -+#ifdef SQUASHFS_TRACE -+#define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args) -+#else -+#define TRACE(s, args...) {} -+#endif -+ -+#define ERROR(s, args...) printk(KERN_ERR "SQUASHFS error: "s, ## args) -+ -+#define SERROR(s, args...) if(!silent) printk(KERN_ERR "SQUASHFS error: "s, ## args) -+#define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args) ++#include "squashfs.h" + +static void squashfs_put_super(struct super_block *); -+static int squashfs_statfs(struct super_block *, struct kstatfs *); ++static int squashfs_statfs(struct dentry *, struct kstatfs *); +static int squashfs_symlink_readpage(struct file *file, struct page *page); +static int squashfs_readpage(struct file *file, struct page *page); +static int squashfs_readpage4K(struct file *file, struct page *page); +static int squashfs_readdir(struct file *, void *, filldir_t); -+static struct dentry *squashfs_lookup(struct inode *, struct dentry *, struct nameidata *); -+static unsigned int read_data(struct super_block *s, char *buffer, -+ unsigned int index, unsigned int length, unsigned int *next_index); -+static int squashfs_get_cached_block(struct super_block *s, char *buffer, -+ unsigned int block, unsigned int offset, int length, -+ unsigned int *next_block, unsigned int *next_offset); -+static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode); -+static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks, -+ char *block_list, unsigned short **block_p, unsigned int *bsize); -+static void squashfs_put_super(struct super_block *s); -+static struct super_block *squashfs_get_sb(struct file_system_type *, int, const char *, void *); +static struct inode *squashfs_alloc_inode(struct super_block *sb); +static void squashfs_destroy_inode(struct inode *inode); +static int init_inodecache(void); +static void destroy_inodecache(void); ++static struct dentry *squashfs_lookup(struct inode *, struct dentry *, ++ struct nameidata *); ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode); ++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_get_sb(struct file_system_type *, int, ++ const char *, void *, struct vfsmount *); + -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+static int squashfs_readpage_lessthan4K(struct file *file, struct page *page); -+static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode); -+static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks, -+ char *block_list, unsigned short **block_p, unsigned int *bsize); -+#endif -+ -+DECLARE_MUTEX(read_data_mutex); + +static z_stream stream; + @@ -181,7 +165,7 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + .get_sb = squashfs_get_sb, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV -+ }; ++}; + +static unsigned char squashfs_filetype_table[] = { + DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK @@ -194,44 +178,32 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + .put_super = squashfs_put_super, +}; + -+static struct address_space_operations squashfs_symlink_aops = { ++SQSH_EXTERN struct address_space_operations squashfs_symlink_aops = { + .readpage = squashfs_symlink_readpage +}; + -+static struct address_space_operations squashfs_aops = { ++SQSH_EXTERN struct address_space_operations squashfs_aops = { + .readpage = squashfs_readpage +}; + -+static struct address_space_operations squashfs_aops_4K = { ++SQSH_EXTERN struct address_space_operations squashfs_aops_4K = { + .readpage = squashfs_readpage4K +}; + -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+static struct address_space_operations squashfs_aops_lessthan4K = { -+ .readpage = squashfs_readpage_lessthan4K -+}; -+#endif -+ +static struct file_operations squashfs_dir_ops = { + .read = generic_read_dir, + .readdir = squashfs_readdir +}; + -+static struct inode_operations squashfs_dir_inode_ops = { ++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = { + .lookup = squashfs_lookup +}; + + -+static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode) -+{ -+ return list_entry(inode, struct squashfs_inode_info, vfs_inode); -+} -+ -+ +static struct buffer_head *get_block_length(struct super_block *s, + int *cur_index, int *offset, int *c_byte) +{ -+ squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_sb_info *msblk = s->s_fs_info; + unsigned short temp; + struct buffer_head *bh; + @@ -250,10 +222,10 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + goto out; + if (msblk->swap) + ((unsigned char *) &temp)[0] = *((unsigned char *) -+ bh->b_data); ++ bh->b_data); + else + ((unsigned char *) &temp)[1] = *((unsigned char *) -+ bh->b_data); ++ bh->b_data); + *c_byte = temp; + *offset = 1; + } else { @@ -261,18 +233,18 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + ((unsigned char *) &temp)[1] = *((unsigned char *) + (bh->b_data + *offset)); + ((unsigned char *) &temp)[0] = *((unsigned char *) -+ (bh->b_data + *offset + 1)); ++ (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)); ++ (bh->b_data + *offset + 1)); + } + *c_byte = temp; + *offset += 2; + } + -+ if (SQUASHFS_CHECK_DATA(msblk->sBlk.flags)) { ++ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) { + if (*offset == msblk->devblksize) { + brelse(bh); + if (!(bh = sb_bread(s, ++(*cur_index)))) @@ -295,58 +267,66 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +} + + -+static unsigned int read_data(struct super_block *s, char *buffer, -+ unsigned int index, unsigned int length, unsigned int *next_index) ++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer, ++ long long index, unsigned int length, ++ long long *next_index) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> msBlk->devblksize_log2) + 2]; -+ unsigned int offset = index & ((1 << msBlk->devblksize_log2) - 1); -+ unsigned int cur_index = index >> msBlk->devblksize_log2; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> ++ msblk->devblksize_log2) + 2]; ++ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1); ++ unsigned int cur_index = index >> msblk->devblksize_log2; + int bytes, avail_bytes, b = 0, k; + char *c_buffer; + unsigned int compressed; + unsigned int c_byte = length; + -+ if(c_byte) { -+ bytes = msBlk->devblksize - offset; ++ if (c_byte) { ++ bytes = msblk->devblksize - offset; + compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte); -+ c_buffer = compressed ? msBlk->read_data : buffer; ++ c_buffer = compressed ? msblk->read_data : buffer; + c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); + -+ TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte); ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); + -+ if(!(bh[0] = sb_getblk(s, cur_index))) ++ 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))) ++ ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) + goto block_release; -+ bytes += msBlk->devblksize; ++ bytes += msblk->devblksize; + } + ll_rw_block(READ, b, bh); + } else { -+ if(!(bh[0] = get_block_length(s, &cur_index, &offset, &c_byte))) ++ if (!(bh[0] = get_block_length(s, &cur_index, &offset, ++ &c_byte))) + goto read_failure; + -+ bytes = msBlk->devblksize - offset; ++ bytes = msblk->devblksize - offset; + compressed = SQUASHFS_COMPRESSED(c_byte); -+ c_buffer = compressed ? msBlk->read_data : buffer; ++ c_buffer = compressed ? msblk->read_data : buffer; + c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte); + -+ TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte); ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); + -+ for(b = 1; bytes < c_byte; b++) { -+ if(!(bh[b] = sb_getblk(s, ++cur_index))) ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) + goto block_release; -+ bytes += msBlk->devblksize; ++ bytes += msblk->devblksize; + } + ll_rw_block(READ, b - 1, bh + 1); + } + -+ if(compressed) -+ down(&read_data_mutex); ++ if (compressed) ++ down(&msblk->read_data_mutex); + -+ for(bytes = 0, k = 0; k < b; k++) { -+ avail_bytes = (c_byte - bytes) > (msBlk->devblksize - offset) ? msBlk->devblksize - offset : c_byte - bytes; ++ for (bytes = 0, k = 0; k < b; k++) { ++ avail_bytes = (c_byte - bytes) > (msblk->devblksize - offset) ? ++ msblk->devblksize - offset : ++ c_byte - bytes; + wait_on_buffer(bh[k]); + if (!buffer_uptodate(bh[k])) + goto block_release; @@ -359,30 +339,36 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + /* + * uncompress block + */ -+ if(compressed) { ++ if (compressed) { + int zlib_err; + + stream.next_in = c_buffer; + stream.avail_in = c_byte; + stream.next_out = buffer; -+ stream.avail_out = msBlk->read_size; -+ if(((zlib_err = zlib_inflateInit(&stream)) != Z_OK) || -+ ((zlib_err = zlib_inflate(&stream, Z_FINISH)) != Z_STREAM_END) || -+ ((zlib_err = zlib_inflateEnd(&stream)) != Z_OK)) { -+ ERROR("zlib_fs returned unexpected result 0x%x\n", zlib_err); ++ stream.avail_out = msblk->read_size; ++ ++ if (((zlib_err = zlib_inflateInit(&stream)) != Z_OK) || ++ ((zlib_err = zlib_inflate(&stream, Z_FINISH)) ++ != Z_STREAM_END) || ((zlib_err = ++ zlib_inflateEnd(&stream)) != Z_OK)) { ++ ERROR("zlib_fs returned unexpected result 0x%x\n", ++ zlib_err); + bytes = 0; + } else + bytes = stream.total_out; -+ up(&read_data_mutex); -+ } + -+ if(next_index) -+ *next_index = index + c_byte + (length ? 0 : (SQUASHFS_CHECK_DATA(msBlk->sBlk.flags) ? 3 : 2)); ++ up(&msblk->read_data_mutex); ++ } + ++ if (next_index) ++ *next_index = index + c_byte + (length ? 0 : ++ (SQUASHFS_CHECK_DATA(msblk->sblk.flags) ++ ? 3 : 2)); + return bytes; + +block_release: -+ while(--b >= 0) brelse(bh[b]); ++ while (--b >= 0) ++ brelse(bh[b]); + +read_failure: + ERROR("sb_bread failed reading block 0x%x\n", cur_index); @@ -390,820 +376,884 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +} + + -+static int squashfs_get_cached_block(struct super_block *s, char *buffer, -+ unsigned int block, unsigned int offset, int length, -+ unsigned int *next_block, unsigned int *next_offset) ++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) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; ++ struct squashfs_sb_info *msblk = s->s_fs_info; + int n, i, bytes, return_length = length; -+ unsigned int next_index; ++ long long next_index; ++ ++ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset); + -+ TRACE("Entered squashfs_get_cached_block [%x:%x]\n", block, offset); ++ while ( 1 ) { ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ if (msblk->block_cache[i].block == block) ++ break; + -+ for(;;) { -+ for(i = 0; i < SQUASHFS_CACHED_BLKS; i++) -+ if(msBlk->block_cache[i].block == block) -+ break; -+ -+ down(&msBlk->block_cache_mutex); -+ if(i == SQUASHFS_CACHED_BLKS) { ++ down(&msblk->block_cache_mutex); ++ ++ if (i == SQUASHFS_CACHED_BLKS) { + /* read inode header block */ -+ for(i = msBlk->next_cache, n = SQUASHFS_CACHED_BLKS; n ; n --, i = (i + 1) % SQUASHFS_CACHED_BLKS) -+ if(msBlk->block_cache[i].block != SQUASHFS_USED_BLK) ++ 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) { ++ ++ if (n == 0) { + wait_queue_t wait; + + init_waitqueue_entry(&wait, current); -+ add_wait_queue(&msBlk->waitq, &wait); -+ up(&msBlk->block_cache_mutex); ++ add_wait_queue(&msblk->waitq, &wait); + set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->block_cache_mutex); + schedule(); + set_current_state(TASK_RUNNING); -+ remove_wait_queue(&msBlk->waitq, &wait); ++ remove_wait_queue(&msblk->waitq, &wait); + continue; + } -+ msBlk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS; -+ -+ if(msBlk->block_cache[i].block == SQUASHFS_INVALID_BLK) { -+ if(!(msBlk->block_cache[i].data = (unsigned char *) -+ kmalloc(SQUASHFS_METADATA_SIZE, GFP_KERNEL))) { -+ ERROR("Failed to allocate cache block\n"); -+ up(&msBlk->block_cache_mutex); -+ return 0; ++ msblk->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"); ++ up(&msblk->block_cache_mutex); ++ goto out; + } + } -+ -+ msBlk->block_cache[i].block = SQUASHFS_USED_BLK; -+ up(&msBlk->block_cache_mutex); -+ if(!(msBlk->block_cache[i].length = read_data(s, msBlk->block_cache[i].data, block, 0, -+ &next_index))) { -+ ERROR("Unable to read cache block [%x:%x]\n", block, offset); -+ return 0; ++ ++ msblk->block_cache[i].block = SQUASHFS_USED_BLK; ++ up(&msblk->block_cache_mutex); ++ ++ if (!(msblk->block_cache[i].length = ++ squashfs_read_data(s, ++ msblk->block_cache[i].data, ++ block, 0, &next_index))) { ++ ERROR("Unable to read cache block [%llx:%x]\n", ++ block, offset); ++ goto out; + } -+ down(&msBlk->block_cache_mutex); -+ wake_up(&msBlk->waitq); -+ msBlk->block_cache[i].block = block; -+ msBlk->block_cache[i].next_index = next_index; -+ TRACE("Read cache block [%x:%x]\n", block, offset); ++ ++ down(&msblk->block_cache_mutex); ++ wake_up(&msblk->waitq); ++ msblk->block_cache[i].block = block; ++ msblk->block_cache[i].next_index = next_index; ++ TRACE("Read cache block [%llx:%x]\n", block, offset); + } + -+ if(msBlk->block_cache[i].block != block) { -+ up(&msBlk->block_cache_mutex); ++ if (msblk->block_cache[i].block != block) { ++ up(&msblk->block_cache_mutex); + continue; + } + -+ if((bytes = msBlk->block_cache[i].length - offset) >= length) { -+ if(buffer) -+ memcpy(buffer, msBlk->block_cache[i].data + offset, length); -+ if(msBlk->block_cache[i].length - offset == length) { -+ *next_block = msBlk->block_cache[i].next_index; ++ if ((bytes = msblk->block_cache[i].length - offset) >= length) { ++ if (buffer) ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, length); ++ if (msblk->block_cache[i].length - offset == length) { ++ *next_block = msblk->block_cache[i].next_index; + *next_offset = 0; + } else { + *next_block = block; + *next_offset = offset + length; + } -+ -+ up(&msBlk->block_cache_mutex); -+ return return_length; ++ up(&msblk->block_cache_mutex); ++ goto finish; + } else { -+ if(buffer) { -+ memcpy(buffer, msBlk->block_cache[i].data + offset, bytes); ++ if (buffer) { ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, bytes); + buffer += bytes; + } -+ block = msBlk->block_cache[i].next_index; -+ up(&msBlk->block_cache_mutex); ++ block = msblk->block_cache[i].next_index; ++ up(&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, unsigned int *fragment_start_block, unsigned int *fragment_size) ++static int get_fragment_location(struct super_block *s, unsigned int fragment, ++ long long *fragment_start_block, ++ unsigned int *fragment_size) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ unsigned int start_block = msBlk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)]; ++ 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); -+ squashfs_fragment_entry fragment_entry; ++ struct squashfs_fragment_entry fragment_entry; + -+ if(msBlk->swap) { -+ squashfs_fragment_entry sfragment_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)) -+ return 0; ++ 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)) -+ return 0; ++ 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; +} + + -+void release_cached_fragment(squashfs_sb_info *msBlk, struct squashfs_fragment_cache *fragment) ++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, struct ++ squashfs_fragment_cache *fragment) +{ -+ down(&msBlk->fragment_mutex); ++ down(&msblk->fragment_mutex); + fragment->locked --; -+ wake_up(&msBlk->fragment_wait_queue); -+ up(&msBlk->fragment_mutex); ++ wake_up(&msblk->fragment_wait_queue); ++ up(&msblk->fragment_mutex); +} + + -+struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s, unsigned int start_block, int length) ++SQSH_EXTERN struct squashfs_fragment_cache *get_cached_fragment(struct super_block ++ *s, long long start_block, ++ int length) +{ + int i, n; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ ++ while ( 1 ) { ++ down(&msblk->fragment_mutex); ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS && ++ msblk->fragment[i].block != start_block; i++); + -+ for(;;) { -+ down(&msBlk->fragment_mutex); -+ for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS && msBlk->fragment[i].block != start_block; i++); -+ if(i == SQUASHFS_CACHED_FRAGMENTS) { -+ for(i = msBlk->next_fragment, n = SQUASHFS_CACHED_FRAGMENTS; -+ n && msBlk->fragment[i].locked; n--, i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS); ++ if (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) { ++ if (n == 0) { + wait_queue_t wait; + + init_waitqueue_entry(&wait, current); -+ add_wait_queue(&msBlk->fragment_wait_queue, &wait); -+ up(&msBlk->fragment_mutex); ++ add_wait_queue(&msblk->fragment_wait_queue, ++ &wait); + set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->fragment_mutex); + schedule(); + set_current_state(TASK_RUNNING); -+ remove_wait_queue(&msBlk->fragment_wait_queue, &wait); ++ remove_wait_queue(&msblk->fragment_wait_queue, ++ &wait); + continue; + } -+ msBlk->next_fragment = (msBlk->next_fragment + 1) % SQUASHFS_CACHED_FRAGMENTS; -+ -+ if(msBlk->fragment[i].data == NULL) -+ if(!(msBlk->fragment[i].data = (unsigned char *) -+ SQUASHFS_ALLOC(SQUASHFS_FILE_MAX_SIZE))) { -+ ERROR("Failed to allocate fragment cache block\n"); -+ up(&msBlk->fragment_mutex); -+ return NULL; ++ msblk->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"); ++ up(&msblk->fragment_mutex); ++ goto out; + } + -+ msBlk->fragment[i].block = SQUASHFS_INVALID_BLK; -+ msBlk->fragment[i].locked = 1; -+ up(&msBlk->fragment_mutex); -+ if(!(msBlk->fragment[i].length = read_data(s, msBlk->fragment[i].data, start_block, length, -+ NULL))) { -+ ERROR("Unable to read fragment cache block [%x]\n", start_block); -+ msBlk->fragment[i].locked = 0; -+ return NULL; -+ } -+ msBlk->fragment[i].block = start_block; -+ TRACE("New fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked); -+ return &msBlk->fragment[i]; -+ } -+ -+ msBlk->fragment[i].locked ++; -+ up(&msBlk->fragment_mutex); -+ -+ TRACE("Got fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked); -+ return &msBlk->fragment[i]; -+ } -+} -+ -+ -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode) -+{ -+ struct inode *i = new_inode(s); -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; -+ unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start; -+ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); -+ unsigned int next_block, next_offset; -+ squashfs_base_inode_header_1 inodeb; -+ -+ TRACE("Entered squashfs_iget_1\n"); -+ -+ if(msBlk->swap) { -+ squashfs_base_inode_header_1 sinodeb; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodeb, block, offset, -+ sizeof(sinodeb), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_BASE_INODE_HEADER_1(&inodeb, &sinodeb, sizeof(sinodeb)); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodeb, block, offset, -+ sizeof(inodeb), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = 1; -+ -+ i->i_mtime.tv_sec = sBlk->mkfs_time; -+ i->i_atime.tv_sec = sBlk->mkfs_time; -+ i->i_ctime.tv_sec = sBlk->mkfs_time; -+ -+ if(inodeb.inode_type != SQUASHFS_IPC_TYPE) -+ i->i_uid = msBlk->uid[((inodeb.inode_type - 1) / SQUASHFS_TYPES) * 16 + inodeb.uid]; -+ i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset); -+ -+ i->i_mode = inodeb.mode; ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].locked = 1; ++ up(&msblk->fragment_mutex); + -+ switch(inodeb.inode_type == SQUASHFS_IPC_TYPE ? SQUASHFS_IPC_TYPE : (inodeb.inode_type - 1) % SQUASHFS_TYPES + 1) { -+ case SQUASHFS_FILE_TYPE: { -+ squashfs_reg_inode_header_1 inodep; -+ -+ if(msBlk->swap) { -+ squashfs_reg_inode_header_1 sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_REG_INODE_HEADER_1(&inodep, &sinodep); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_size = inodep.file_size; -+ i->i_fop = &generic_ro_fops; -+ if(sBlk->block_size > 4096) -+ i->i_data.a_ops = &squashfs_aops; -+ else if(sBlk->block_size == 4096) -+ i->i_data.a_ops = &squashfs_aops_4K; -+ else -+ i->i_data.a_ops = &squashfs_aops_lessthan4K; -+ i->i_mode |= S_IFREG; -+ i->i_mtime.tv_sec = inodep.mtime; -+ i->i_atime.tv_sec = inodep.mtime; -+ i->i_ctime.tv_sec = inodep.mtime; -+ i->i_blocks = ((i->i_size - 1) >> 9) + 1; -+ i->i_blksize = PAGE_CACHE_SIZE; -+ SQUASHFS_I(i)->u.s1.fragment_start_block = SQUASHFS_INVALID_BLK; -+ SQUASHFS_I(i)->u.s1.fragment_offset = 0; -+ SQUASHFS_I(i)->start_block = inodep.start_block; -+ SQUASHFS_I(i)->block_list_start = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset); -+ break; -+ } -+ case SQUASHFS_DIR_TYPE: { -+ squashfs_dir_inode_header_1 inodep; -+ -+ if(msBlk->swap) { -+ squashfs_dir_inode_header_1 sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DIR_INODE_HEADER_1(&inodep, &sinodep); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) -+ goto failed_read; ++ if (!(msblk->fragment[i].length = squashfs_read_data(s, ++ msblk->fragment[i].data, ++ start_block, length, NULL))) { ++ ERROR("Unable to read fragment cache block " ++ "[%llx]\n", start_block); ++ msblk->fragment[i].locked = 0; ++ goto out; ++ } + -+ i->i_size = inodep.file_size; -+ i->i_op = &squashfs_dir_inode_ops; -+ i->i_fop = &squashfs_dir_ops; -+ i->i_mode |= S_IFDIR; -+ i->i_mtime.tv_sec = inodep.mtime; -+ i->i_atime.tv_sec = inodep.mtime; -+ i->i_ctime.tv_sec = inodep.mtime; -+ SQUASHFS_I(i)->start_block = inodep.start_block; -+ SQUASHFS_I(i)->offset = inodep.offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = 0; -+ TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset, -+ inodep.start_block, inodep.offset); ++ 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); + break; + } -+ case SQUASHFS_SYMLINK_TYPE: { -+ squashfs_symlink_inode_header_1 inodep; -+ -+ if(msBlk->swap) { -+ squashfs_symlink_inode_header_1 sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(&inodep, &sinodep); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_size = inodep.symlink_size; -+ i->i_op = &page_symlink_inode_operations; -+ i->i_data.a_ops = &squashfs_symlink_aops; -+ i->i_mode |= S_IFLNK; -+ SQUASHFS_I(i)->start_block = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ TRACE("Symbolic link inode %x:%x, start_block %x, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, next_block, next_offset); -+ break; -+ } -+ case SQUASHFS_BLKDEV_TYPE: -+ case SQUASHFS_CHRDEV_TYPE: { -+ squashfs_dev_inode_header_1 inodep; + -+ if(msBlk->swap) { -+ squashfs_dev_inode_header_1 sinodep; ++ msblk->fragment[i].locked++; ++ up(&msblk->fragment_mutex); ++ TRACE("Got fragment %d, start block %lld, locked %d\n", i, ++ msblk->fragment[i].block, ++ msblk->fragment[i].locked); ++ break; ++ } + -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DEV_INODE_HEADER_1(&inodep, &sinodep); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) -+ goto failed_read; ++ return &msblk->fragment[i]; + -+ i->i_size = 0; -+ i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK; -+ init_special_inode(i, i->i_mode, old_decode_dev(inodep.rdev)); -+ TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev); -+ break; -+ } -+ case SQUASHFS_IPC_TYPE: { -+ squashfs_ipc_inode_header_1 inodep; ++out: ++ return NULL; ++} + -+ if(msBlk->swap) { -+ squashfs_ipc_inode_header_1 sinodep; + -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_IPC_INODE_HEADER_1(&inodep, &sinodep); -+ } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) -+ goto failed_read; ++static struct inode *squashfs_new_inode(struct super_block *s, ++ struct squashfs_base_inode_header *inodeb) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct inode *i = new_inode(s); + -+ i->i_size = 0; -+ i->i_mode |= (inodep.type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK; -+ i->i_uid = msBlk->uid[inodep.offset * 16 + inodeb.uid]; -+ init_special_inode(i, i->i_mode, 0); -+ break; -+ } -+ default: -+ ERROR("Unknown inode type %d in squashfs_iget!\n", inodeb.inode_type); -+ goto failed_read1; ++ if (i) { ++ 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]; + } -+ -+ if(inodeb.guid == 15) -+ i->i_gid = i->i_uid; -+ else -+ i->i_gid = msBlk->guid[inodeb.guid]; + -+ insert_inode_hash(i); + return i; -+ -+failed_read: -+ ERROR("Unable to read inode [%x:%x]\n", block, offset); -+ -+failed_read1: -+ return NULL; +} -+#endif + + -+static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode) ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode) +{ -+ struct inode *i = new_inode(s); -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; -+ unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start; ++ struct inode *i; ++ 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); -+ unsigned int next_block, next_offset; -+ squashfs_base_inode_header inodeb; ++ 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_iget\n"); + -+ if(msBlk->swap) { -+ squashfs_base_inode_header sinodeb; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodeb, block, offset, -+ sizeof(sinodeb), &next_block, &next_offset)) ++ 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)); ++ 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)) ++ if (!squashfs_get_cached_block(s, (char *) inodeb, block, ++ offset, sizeof(*inodeb), &next_block, ++ &next_offset)) + goto failed_read; + -+ i->i_nlink = 1; -+ -+ i->i_mtime.tv_sec = sBlk->mkfs_time; -+ i->i_atime.tv_sec = sBlk->mkfs_time; -+ i->i_ctime.tv_sec = sBlk->mkfs_time; -+ -+ i->i_uid = msBlk->uid[inodeb.uid]; -+ i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset); -+ -+ i->i_mode = inodeb.mode; -+ -+ switch(inodeb.inode_type) { ++ switch(inodeb->inode_type) { + case SQUASHFS_FILE_TYPE: { -+ squashfs_reg_inode_header inodep; -+ -+ if(msBlk->swap) { -+ squashfs_reg_inode_header sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) ++ 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); ++ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep); + } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) + goto failed_read; + -+ SQUASHFS_I(i)->u.s1.fragment_start_block = SQUASHFS_INVALID_BLK; -+ if(inodep.fragment != SQUASHFS_INVALID_BLK && !get_fragment_location(s, inodep.fragment, -+ &SQUASHFS_I(i)->u.s1.fragment_start_block, &SQUASHFS_I(i)->u.s1.fragment_size)) ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location(s, ++ inodep->fragment, &frag_blk, &frag_size)) + goto failed_read; + -+ SQUASHFS_I(i)->u.s1.fragment_offset = inodep.offset; -+ i->i_size = inodep.file_size; ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = 1; ++ i->i_size = inodep->file_size; + i->i_fop = &generic_ro_fops; -+ if(sBlk->block_size > 4096) ++ 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; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ 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; -+ i->i_blksize = PAGE_CACHE_SIZE; -+ SQUASHFS_I(i)->start_block = inodep.start_block; -+ SQUASHFS_I(i)->block_list_start = next_block; ++ SQUASHFS_I(i)->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; -+ TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset); ++ 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: { -+ squashfs_dir_inode_header inodep; -+ -+ if(msBlk->swap) { -+ squashfs_dir_inode_header sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) ++ 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); ++ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep); + } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) ++ 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; ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ 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; -+ 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)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; + SQUASHFS_I(i)->u.s2.directory_index_count = 0; -+ TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset, -+ inodep.start_block, inodep.offset); ++ 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: { -+ squashfs_ldir_inode_header inodep; -+ -+ if(msBlk->swap) { -+ squashfs_ldir_inode_header sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) ++ 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); ++ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep, ++ sinodep); + } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) ++ 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; ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ 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; -+ 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)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; + SQUASHFS_I(i)->u.s2.directory_index_start = next_block; -+ SQUASHFS_I(i)->u.s2.directory_index_offset = next_offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = inodep.i_count; -+ TRACE("Long directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset, -+ inodep.start_block, inodep.offset); ++ 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: { -+ squashfs_symlink_inode_header inodep; -+ -+ if(msBlk->swap) { -+ squashfs_symlink_inode_header sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) ++ 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); ++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep, ++ sinodep); + } else -+ if(!squashfs_get_cached_block(s, (char *) &inodep, block, offset, sizeof(inodep), -+ &next_block, &next_offset)) ++ 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; ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ 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 %x, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, next_block, 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: { -+ squashfs_dev_inode_header inodep; -+ -+ if(msBlk->swap) { -+ squashfs_dev_inode_header sinodep; -+ -+ if(!squashfs_get_cached_block(s, (char *) &sinodep, block, offset, sizeof(sinodep), -+ &next_block, &next_offset)) ++ 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)) ++ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) + goto failed_read; + -+ i->i_size = 0; -+ i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK; -+ init_special_inode(i, i->i_mode, old_decode_dev(inodep.rdev)); -+ TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev); ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ 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: { -+ i->i_size = 0; -+ i->i_mode |= (inodeb.inode_type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK; ++ 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; ++ ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ 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; ++ ERROR("Unknown inode type %d in squashfs_iget!\n", ++ inodeb->inode_type); ++ goto failed_read1; + } -+ -+ if(inodeb.guid == SQUASHFS_GUIDS) -+ i->i_gid = i->i_uid; -+ else -+ i->i_gid = msBlk->guid[inodeb.guid]; + + insert_inode_hash(i); + return i; + +failed_read: -+ ERROR("Unable to read inode [%x:%x]\n", block, offset); ++ ERROR("Unable to read inode [%llx:%x]\n", block, offset); + +failed_read1: + return NULL; +} + + -+static int squashfs_fill_super(struct super_block *s, -+ void *data, int silent) ++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; ++ ++ /* Allocate fragment index table */ ++ if (!(msblk->fragment_index = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ return 0; ++ } ++ ++ if (SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments) && ++ !squashfs_read_data(s, (char *) ++ msblk->fragment_index, ++ sblk->fragment_table_start, ++ SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ 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->iget = squashfs_iget; ++ 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) +{ -+ squashfs_sb_info *msBlk; -+ squashfs_super_block *sBlk; ++ 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 = (void *) kmalloc(sizeof(squashfs_sb_info), GFP_KERNEL))) { ++ if (!(s->s_fs_info = kmalloc(sizeof(struct squashfs_sb_info), ++ GFP_KERNEL))) { + ERROR("Failed to allocate superblock\n"); -+ return -ENOMEM; ++ goto failure; + } -+ msBlk = (squashfs_sb_info *) s->s_fs_info; -+ sBlk = &msBlk->sBlk; -+ -+ msBlk->devblksize = sb_min_blocksize(s, BLOCK_SIZE); -+ msBlk->devblksize_log2 = ffz(~msBlk->devblksize); -+ -+ init_MUTEX(&msBlk->read_page_mutex); -+ init_MUTEX(&msBlk->block_cache_mutex); -+ init_MUTEX(&msBlk->fragment_mutex); -+ -+ init_waitqueue_head(&msBlk->waitq); -+ init_waitqueue_head(&msBlk->fragment_wait_queue); -+ -+ if(!read_data(s, (char *) sBlk, SQUASHFS_START, sizeof(squashfs_super_block) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ memset(s->s_fs_info, 0, sizeof(struct squashfs_sb_info)); ++ msblk = s->s_fs_info; ++ sblk = &msblk->sblk; ++ ++ msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE); ++ msblk->devblksize_log2 = ffz(~msblk->devblksize); ++ ++ init_MUTEX(&msblk->read_data_mutex); ++ init_MUTEX(&msblk->read_page_mutex); ++ init_MUTEX(&msblk->block_cache_mutex); ++ init_MUTEX(&msblk->fragment_mutex); ++ init_MUTEX(&msblk->meta_index_mutex); ++ ++ init_waitqueue_head(&msblk->waitq); ++ init_waitqueue_head(&msblk->fragment_wait_queue); ++ ++ if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START, ++ sizeof(struct squashfs_super_block) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { + SERROR("unable to read superblock\n"); + goto failed_mount; + } + + /* Check it is a SQUASHFS superblock */ -+ msBlk->swap = 0; -+ if((s->s_magic = sBlk->s_magic) != SQUASHFS_MAGIC) { -+ if(sBlk->s_magic == SQUASHFS_MAGIC_SWAP) { -+ squashfs_super_block sblk; -+ WARNING("Mounting a different endian SQUASHFS filesystem on %s\n", bdevname(s->s_bdev, b)); -+ SQUASHFS_SWAP_SUPER_BLOCK(&sblk, sBlk); -+ memcpy(sBlk, &sblk, sizeof(squashfs_super_block)); -+ msBlk->swap = 1; ++ 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)); ++ SERROR("Can't find a SQUASHFS superblock on %s\n", ++ bdevname(s->s_bdev, b)); + goto failed_mount; + } + } + + /* Check the MAJOR & MINOR versions */ -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+ if((sBlk->s_major != 1) && (sBlk->s_major != 2 || sBlk->s_minor > SQUASHFS_MINOR)) { -+ SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (1 : x) or (2 : <= %d)\n", -+ sBlk->s_major, sBlk->s_minor, SQUASHFS_MINOR); -+ goto failed_mount; -+ } -+ if(sBlk->s_major == 1) -+ sBlk->block_size = sBlk->block_size_1; -+#else -+ if(sBlk->s_major != SQUASHFS_MAJOR || sBlk->s_minor > SQUASHFS_MINOR) { -+ SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (%d: <= %d)\n", -+ sBlk->s_major, sBlk->s_minor, SQUASHFS_MAJOR, SQUASHFS_MINOR); ++ if(!supported_squashfs_filesystem(msblk, silent)) + goto failed_mount; -+ } -+#endif + + TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b)); -+ TRACE("Inodes are %scompressed\n", SQUASHFS_UNCOMPRESSED_INODES(sBlk->flags) ? "un" : ""); -+ TRACE("Data is %scompressed\n", SQUASHFS_UNCOMPRESSED_DATA(sBlk->flags) ? "un" : ""); -+ TRACE("Check data is %s present in the filesystem\n", SQUASHFS_CHECK_DATA(sBlk->flags) ? "" : "not"); -+ TRACE("Filesystem size %d bytes\n", sBlk->bytes_used); -+ TRACE("Block size %d\n", sBlk->block_size); -+ TRACE("Number of inodes %d\n", sBlk->inodes); -+ if(sBlk->s_major > 1) -+ TRACE("Number of fragments %d\n", sBlk->fragments); -+ TRACE("Number of uids %d\n", sBlk->no_uids); -+ TRACE("Number of gids %d\n", sBlk->no_guids); -+ TRACE("sBlk->inode_table_start %x\n", sBlk->inode_table_start); -+ TRACE("sBlk->directory_table_start %x\n", sBlk->directory_table_start); -+ if(sBlk->s_major > 1) -+ TRACE("sBlk->fragment_table_start %x\n", sBlk->fragment_table_start); -+ TRACE("sBlk->uid_start %x\n", sBlk->uid_start); ++ 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_ops; + + /* Init inode_table block pointer array */ -+ if(!(msBlk->block_cache = (squashfs_cache *) kmalloc(sizeof(squashfs_cache) * SQUASHFS_CACHED_BLKS, GFP_KERNEL))) { ++ 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; ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; + -+ msBlk->next_cache = 0; ++ msblk->next_cache = 0; + + /* Allocate read_data block */ -+ msBlk->read_size = (sBlk->block_size < SQUASHFS_METADATA_SIZE) ? SQUASHFS_METADATA_SIZE : sBlk->block_size; -+ if(!(msBlk->read_data = (char *) kmalloc(msBlk->read_size, GFP_KERNEL))) { ++ msblk->read_size = (sblk->block_size < SQUASHFS_METADATA_SIZE) ? ++ SQUASHFS_METADATA_SIZE : ++ sblk->block_size; ++ ++ if (!(msblk->read_data = kmalloc(msblk->read_size, GFP_KERNEL))) { + ERROR("Failed to allocate read_data block\n"); -+ goto failed_mount1; ++ goto failed_mount; + } + + /* Allocate read_page block */ -+ if(sBlk->block_size > PAGE_CACHE_SIZE) { -+ if(!(msBlk->read_page = (char *) kmalloc(sBlk->block_size, GFP_KERNEL))) { -+ ERROR("Failed to allocate read_page block\n"); -+ goto failed_mount2; -+ } -+ } else -+ msBlk->read_page = NULL; ++ 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 = (squashfs_uid *) kmalloc((sBlk->no_uids + -+ sBlk->no_guids) * sizeof(squashfs_uid), GFP_KERNEL))) { ++ 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_mount3; ++ goto failed_mount; + } -+ msBlk->guid = msBlk->uid + sBlk->no_uids; -+ -+ if(msBlk->swap) { -+ squashfs_uid suid[sBlk->no_uids + sBlk->no_guids]; -+ -+ if(!read_data(s, (char *) &suid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) * -+ sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { -+ SERROR("unable to read uid/gid table\n"); -+ goto failed_mount4; ++ 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)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; + } -+ SQUASHFS_SWAP_DATA(msBlk->uid, suid, (sBlk->no_uids + sBlk->no_guids), (sizeof(squashfs_uid) * 8)); ++ ++ SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids + ++ sblk->no_guids), (sizeof(unsigned int) * 8)); + } else -+ if(!read_data(s, (char *) msBlk->uid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) * -+ sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { -+ SERROR("unable to read uid/gid table\n"); -+ goto failed_mount4; ++ 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)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; + } + + -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+ if(sBlk->s_major == 1) { -+ msBlk->iget = squashfs_iget_1; -+ msBlk->read_blocklist = read_blocklist_1; -+ msBlk->fragment = NULL; -+ msBlk->fragment_index = NULL; ++ if (sblk->s_major == 1 && squashfs_1_0_supported(msblk)) + goto allocate_root; -+ } -+#endif -+ msBlk->iget = squashfs_iget; -+ msBlk->read_blocklist = read_blocklist; + -+ if(!(msBlk->fragment = (struct squashfs_fragment_cache *) kmalloc(sizeof(struct squashfs_fragment_cache) * SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) { ++ if (!(msblk->fragment = kmalloc(sizeof(struct squashfs_fragment_cache) * ++ SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) { + ERROR("Failed to allocate fragment block cache\n"); -+ goto failed_mount4; ++ 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; ++ 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; ++ msblk->next_fragment = 0; + + /* Allocate fragment index table */ -+ if(!(msBlk->fragment_index = (squashfs_fragment_index *) kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments), GFP_KERNEL))) { -+ ERROR("Failed to allocate uid/gid table\n"); -+ goto failed_mount5; -+ } -+ -+ if(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) && -+ !read_data(s, (char *) msBlk->fragment_index, sBlk->fragment_table_start, -+ SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { -+ SERROR("unable to read fragment index table\n"); -+ goto failed_mount6; -+ } ++ if (msblk->read_fragment_index_table(s) == 0) ++ goto failed_mount; + -+ if(msBlk->swap) { -+ int i; -+ squashfs_fragment_index fragment; -+ -+ for(i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sBlk->fragments); i++) { -+ SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), &msBlk->fragment_index[i], 1); -+ msBlk->fragment_index[i] = fragment; -+ } -+ } -+ -+#ifdef SQUASHFS_1_0_COMPATIBILITY +allocate_root: -+#endif -+ if(!(s->s_root = d_alloc_root((msBlk->iget)(s, sBlk->root_inode)))) { ++ if ((root = (msblk->iget)(s, sblk->root_inode)) == NULL) ++ goto failed_mount; ++ ++ if ((s->s_root = d_alloc_root(root)) == NULL) { + ERROR("Root inode create failed\n"); -+ goto failed_mount5; ++ iput(root); ++ goto failed_mount; + } + + TRACE("Leaving squashfs_read_super\n"); + return 0; + -+failed_mount6: -+ kfree(msBlk->fragment_index); -+failed_mount5: -+ kfree(msBlk->fragment); -+failed_mount4: -+ kfree(msBlk->uid); -+failed_mount3: -+ kfree(msBlk->read_page); -+failed_mount2: -+ kfree(msBlk->read_data); -+failed_mount1: -+ kfree(msBlk->block_cache); +failed_mount: ++ kfree(msblk->fragment_index); ++ kfree(msblk->fragment); ++ kfree(msblk->uid); ++ kfree(msblk->read_page); ++ kfree(msblk->read_data); ++ kfree(msblk->block_cache); ++ kfree(msblk->fragment_index_2); + kfree(s->s_fs_info); + s->s_fs_info = NULL; + return -EINVAL; ++ ++failure: ++ return -ENOMEM; +} + + -+static int squashfs_statfs(struct super_block *s, struct kstatfs *buf) ++static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ -+ squashfs_super_block *sBlk = &((squashfs_sb_info *)s->s_fs_info)->sBlk; ++ struct squashfs_sb_info *msblk = dentry->d_inode->i_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_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_files = sblk->inodes; + buf->f_ffree = 0; + buf->f_namelen = SQUASHFS_NAME_LEN; ++ + return 0; +} + @@ -1212,35 +1262,41 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +{ + struct inode *inode = page->mapping->host; + int index = page->index << PAGE_CACHE_SHIFT, length, bytes; -+ unsigned int block = SQUASHFS_I(inode)->start_block; ++ 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 %d, start block %x, offset %x\n", -+ page->index, SQUASHFS_I(inode)->start_block, SQUASHFS_I(inode)->offset); -+ -+ for(length = 0; length < index; length += bytes) { -+ if(!(bytes = squashfs_get_cached_block(inode->i_sb, NULL, block, offset, -+ PAGE_CACHE_SIZE, &block, &offset))) { -+ ERROR("Unable to read symbolic link [%x:%x]\n", block, offset); ++ 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) { ++ if (length != index) { + ERROR("(squashfs_symlink_readpage) length != index\n"); + bytes = 0; + goto skip_read; + } + -+ bytes = (inode->i_size - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : inode->i_size - length; -+ if(!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, offset, bytes, &block, &offset))) -+ ERROR("Unable to read symbolic link [%x:%x]\n", block, offset); ++ 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); + @@ -1248,158 +1304,358 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +} + + -+#define SIZE 256 ++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; ++ ++ down(&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: ++ up(&msblk->meta_index_mutex); + -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks, -+ char *block_list, unsigned short **block_p, unsigned int *bsize) ++ return meta; ++} ++ ++ ++struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info; -+ unsigned short *block_listp; -+ int i = 0; -+ int block_ptr = SQUASHFS_I(inode)->block_list_start; -+ int offset = SQUASHFS_I(inode)->offset; -+ unsigned int block = SQUASHFS_I(inode)->start_block; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct meta_index *meta = NULL; ++ int i; + -+ for(;;) { -+ int blocks = (index + readahead_blks - i); -+ if(blocks > (SIZE >> 1)) { -+ if((index - i) <= (SIZE >> 1)) -+ blocks = index - i; -+ else -+ blocks = SIZE >> 1; ++ down(&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; ++ } + -+ if(msBlk->swap) { -+ unsigned char sblock_list[SIZE]; -+ if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) { -+ ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset); -+ return 0; -+ } -+ SQUASHFS_SWAP_SHORTS(((unsigned short *)block_list), ((unsigned short *)sblock_list), blocks); -+ } else -+ if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) { -+ ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset); -+ return 0; -+ } -+ for(block_listp = (unsigned short *) block_list; i < index && blocks; i ++, block_listp ++, blocks --) -+ block += SQUASHFS_COMPRESSED_SIZE(*block_listp); -+ if(blocks >= readahead_blks) -+ break; ++ 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; + } + -+ if(bsize) -+ *bsize = SQUASHFS_COMPRESSED_SIZE(*block_listp) | (!SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_BIT_BLOCK : 0); -+ else -+ *block_p = block_listp; -+ return block; ++ 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: ++ up(&msblk->meta_index_mutex); ++ return meta; ++} ++ ++ ++void release_meta_index(struct inode *inode, struct meta_index *meta) ++{ ++ meta->locked = 0; +} -+#endif + + -+static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks, -+ char *block_list, unsigned short **block_p, unsigned int *bsize) ++static int read_block_index(struct super_block *s, int blocks, char *block_list, ++ long long *start_block, int *offset) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info; ++ struct squashfs_sb_info *msblk = s->s_fs_info; + unsigned int *block_listp; -+ int i = 0; -+ int block_ptr = SQUASHFS_I(inode)->block_list_start; -+ int offset = SQUASHFS_I(inode)->offset; -+ unsigned int block = SQUASHFS_I(inode)->start_block; ++ int block = 0; + -+ for(;;) { -+ int blocks = (index + readahead_blks - i); -+ if(blocks > (SIZE >> 2)) { -+ if((index - i) <= (SIZE >> 2)) -+ blocks = index - i; -+ else -+ blocks = SIZE >> 2; ++ if (msblk->swap) { ++ 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; + } + -+ if(msBlk->swap) { -+ unsigned char sblock_list[SIZE]; -+ if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) { -+ ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset); -+ return 0; -+ } -+ SQUASHFS_SWAP_INTS(((unsigned int *)block_list), ((unsigned int *)sblock_list), blocks); -+ } else -+ if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) { -+ ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset); -+ return 0; ++ for (block_listp = (unsigned int *) block_list; 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 { ++ 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; + } -+ for(block_listp = (unsigned int *) block_list; i < index && blocks; i ++, block_listp ++, blocks --) -+ block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp); -+ if(blocks >= readahead_blks) -+ break; ++ ++ 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; + } + -+ *bsize = *block_listp; ++ 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; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; + unsigned char block_list[SIZE]; -+ unsigned int bsize, block, i = 0, bytes = 0, byte_offset = 0; -+ int index = page->index >> (sBlk->block_log - PAGE_CACHE_SHIFT); -+ void *pageaddr = kmap(page); ++ 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; ++ char *data_ptr = msblk->read_page; ++ ++ int mask = (1 << (sblk->block_log - PAGE_CACHE_SHIFT)) - 1; + int start_index = page->index & ~mask; + int end_index = start_index | mask; + -+ TRACE("Entered squashfs_readpage, page index %x, start block %x\n", (unsigned int) page->index, -+ SQUASHFS_I(inode)->start_block); ++ TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n", ++ page->index, ++ SQUASHFS_I(inode)->start_block); + -+ if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) { ++ 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 < (inode->i_size >> sBlk->block_log)) { -+ if((block = (msBlk->read_blocklist)(inode, index, 1, block_list, NULL, &bsize)) == 0) ++ 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; + -+ down(&msBlk->read_page_mutex); -+ if(!(bytes = read_data(inode->i_sb, msBlk->read_page, block, bsize, NULL))) { -+ ERROR("Unable to read page, block %x, size %x\n", block, bsize); -+ up(&msBlk->read_page_mutex); ++ down(&msblk->read_page_mutex); ++ ++ if (!(bytes = squashfs_read_data(inode->i_sb, msblk->read_page, ++ block, bsize, NULL))) { ++ ERROR("Unable to read page, block %llx, size %x\n", block, ++ bsize); ++ up(&msblk->read_page_mutex); + goto skip_read; + } + } else { -+ if((fragment = get_cached_fragment(inode->i_sb, SQUASHFS_I(inode)->u.s1.fragment_start_block, SQUASHFS_I(inode)->u.s1.fragment_size)) == NULL) { -+ ERROR("Unable to read page, block %x, size %x\n", SQUASHFS_I(inode)->u.s1.fragment_start_block, (int) SQUASHFS_I(inode)->u.s1.fragment_size); ++ 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 + (inode->i_size & (sBlk->block_size - 1)); ++ 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) { ++ for (i = start_index; i <= end_index && byte_offset < bytes; ++ i++, byte_offset += PAGE_CACHE_SIZE) { + struct page *push_page; -+ int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : bytes - byte_offset; -+ -+ TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n", bytes, i, byte_offset, available_bytes); -+ -+ if(i == page->index) { -+ memcpy(pageaddr, data_ptr + byte_offset, available_bytes); -+ memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes); -+ kunmap(page); ++ int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ? ++ PAGE_CACHE_SIZE : bytes - byte_offset; ++ ++ TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n", ++ bytes, i, byte_offset, available_bytes); ++ ++ if (i == page->index) { ++ pageaddr = kmap_atomic(page, KM_USER0); ++ memcpy(pageaddr, data_ptr + byte_offset, ++ available_bytes); ++ memset(pageaddr + available_bytes, 0, ++ PAGE_CACHE_SIZE - available_bytes); ++ kunmap_atomic(pageaddr, KM_USER0); + flush_dcache_page(page); + SetPageUptodate(page); + unlock_page(page); -+ } else if((push_page = grab_cache_page_nowait(page->mapping, i))) { -+ void *pageaddr = kmap(push_page); -+ memcpy(pageaddr, data_ptr + byte_offset, available_bytes); -+ memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes); -+ kunmap(push_page); ++ } else if ((push_page = ++ grab_cache_page_nowait(page->mapping, i))) { ++ pageaddr = kmap_atomic(push_page, KM_USER0); ++ ++ memcpy(pageaddr, data_ptr + byte_offset, ++ available_bytes); ++ memset(pageaddr + available_bytes, 0, ++ PAGE_CACHE_SIZE - available_bytes); ++ kunmap_atomic(pageaddr, KM_USER0); + flush_dcache_page(push_page); + SetPageUptodate(push_page); + unlock_page(push_page); @@ -1407,16 +1663,19 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + } + } + -+ if(SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || index < (inode->i_size >> sBlk->block_log)) -+ up(&msBlk->read_page_mutex); ++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK ++ || index < (i_size_read(inode) >> ++ sblk->block_log)) ++ up(&msblk->read_page_mutex); + else -+ release_cached_fragment(msBlk, fragment); ++ release_cached_fragment(msblk, fragment); + + return 0; + +skip_read: ++ pageaddr = kmap_atomic(page, KM_USER0); + memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); -+ kunmap(page); ++ kunmap_atomic(pageaddr, KM_USER0); + flush_dcache_page(page); + SetPageUptodate(page); + unlock_page(page); @@ -1428,144 +1687,130 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +static int squashfs_readpage4K(struct file *file, struct page *page) +{ + struct inode *inode = page->mapping->host; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; + unsigned char block_list[SIZE]; -+ unsigned int bsize, block, bytes = 0; -+ void *pageaddr = kmap(page); -+ -+ TRACE("Entered squashfs_readpage4K, page index %x, start block %x\n", (unsigned int) page->index, -+ SQUASHFS_I(inode)->start_block); ++ long long block; ++ unsigned int bsize, bytes = 0; ++ void *pageaddr; + -+ if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) { ++ 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)) { ++ pageaddr = kmap_atomic(page, KM_USER0); + goto skip_read; + } + -+ if(SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || page->index < (inode->i_size >> sBlk->block_log)) { -+ block = (msBlk->read_blocklist)(inode, page->index, 1, block_list, NULL, &bsize); -+ -+ if(!(bytes = read_data(inode->i_sb, pageaddr, block, bsize, NULL))) -+ ERROR("Unable to read page, block %x, size %x\n", block, bsize); ++ 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); ++ ++ down(&msblk->read_page_mutex); ++ bytes = squashfs_read_data(inode->i_sb, msblk->read_page, block, ++ bsize, NULL); ++ pageaddr = kmap_atomic(page, KM_USER0); ++ if (bytes) ++ memcpy(pageaddr, msblk->read_page, bytes); ++ else ++ ERROR("Unable to read page, block %llx, size %x\n", ++ block, bsize); ++ up(&msblk->read_page_mutex); + } else { -+ struct squashfs_fragment_cache *fragment; -+ -+ if((fragment = get_cached_fragment(inode->i_sb, SQUASHFS_I(inode)->u.s1.fragment_start_block, SQUASHFS_I(inode)->u.s1.fragment_size)) == NULL) -+ ERROR("Unable to read page, block %x, size %x\n", SQUASHFS_I(inode)->u.s1.fragment_start_block, (int) SQUASHFS_I(inode)->u.s1.fragment_size); -+ else { -+ bytes = inode->i_size & (sBlk->block_size - 1); -+ memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)->u.s1.fragment_offset, bytes); -+ release_cached_fragment(msBlk, fragment); -+ } ++ 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); ++ pageaddr = kmap_atomic(page, KM_USER0); ++ if (fragment) { ++ bytes = i_size_read(inode) & (sblk->block_size - 1); ++ memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)-> ++ u.s1.fragment_offset, bytes); ++ 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: + memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); -+ kunmap(page); -+ flush_dcache_page(page); -+ SetPageUptodate(page); -+ unlock_page(page); -+ -+ return 0; -+} -+ -+ -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+static int squashfs_readpage_lessthan4K(struct file *file, struct page *page) -+{ -+ struct inode *inode = page->mapping->host; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)inode->i_sb->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; -+ unsigned char block_list[SIZE]; -+ unsigned short *block_listp, block, bytes = 0; -+ int index = page->index << (PAGE_CACHE_SHIFT - sBlk->block_log); -+ int file_blocks = ((inode->i_size - 1) >> sBlk->block_log) + 1; -+ int readahead_blks = 1 << (PAGE_CACHE_SHIFT - sBlk->block_log); -+ void *pageaddr = kmap(page); -+ -+ int i_end = index + (1 << (PAGE_CACHE_SHIFT - sBlk->block_log)); -+ int byte; -+ -+ TRACE("Entered squashfs_readpage_lessthan4K, page index %x, start block %x\n", (unsigned int) page->index, -+ SQUASHFS_I(inode)->start_block); -+ -+ block = read_blocklist_1(inode, index, readahead_blks, block_list, &block_listp, NULL); -+ -+ if(i_end > file_blocks) -+ i_end = file_blocks; -+ -+ while(index < i_end) { -+ int c_byte = !SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_SIZE(*block_listp) | SQUASHFS_COMPRESSED_BIT_BLOCK : *block_listp; -+ if(!(byte = read_data(inode->i_sb, pageaddr, block, c_byte, NULL))) { -+ ERROR("Unable to read page, block %x, size %x\n", block, *block_listp); -+ goto skip_read; -+ } -+ block += SQUASHFS_COMPRESSED_SIZE(*block_listp); -+ pageaddr += byte; -+ bytes += byte; -+ index ++; -+ block_listp ++; -+ } -+ -+skip_read: -+ memset(pageaddr, 0, PAGE_CACHE_SIZE - bytes); -+ kunmap(page); ++ kunmap_atomic(pageaddr, KM_USER0); + flush_dcache_page(page); + SetPageUptodate(page); + unlock_page(page); + + return 0; +} -+#endif + + -+static int get_dir_index_using_offset(struct super_block *s, unsigned int *next_block, -+ unsigned int *next_offset, unsigned int index_start, unsigned int index_offset, -+ int i_count, long long f_pos) ++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) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; + int i, length = 0; -+ squashfs_dir_index index; ++ 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); ++ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", ++ i_count, (unsigned int) f_pos); + -+ if(f_pos == 0) -+ return 0; ++ f_pos =- 3; ++ if (f_pos == 0) ++ goto finish; + -+ for(i = 0; i < i_count; i++) { -+ if(msBlk->swap) { -+ squashfs_dir_index sindex; -+ squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset, -+ sizeof(sindex), &index_start, &index_offset); ++ 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); ++ squashfs_get_cached_block(s, (char *) &index, ++ index_start, index_offset, ++ sizeof(index), &index_start, ++ &index_offset); + -+ if(index.index > f_pos) ++ if (index.index > f_pos) + break; + + squashfs_get_cached_block(s, NULL, index_start, index_offset, -+ index.size + 1, &index_start, &index_offset); ++ index.size + 1, &index_start, ++ &index_offset); + + length = index.index; -+ *next_block = index.start_block + sBlk->directory_table_start; ++ *next_block = index.start_block + sblk->directory_table_start; + } + + *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ return length; ++ ++finish: ++ return length + 3; +} + + -+static int get_dir_index_using_name(struct super_block *s, unsigned int *next_block, -+ unsigned int *next_offset, unsigned int index_start, unsigned int index_offset, -+ int i_count, const char *name, int size) ++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) +{ -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)s->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; + int i, length = 0; -+ char buffer[sizeof(squashfs_dir_index) + SQUASHFS_NAME_LEN + 1]; -+ squashfs_dir_index *index = (squashfs_dir_index *) buffer; ++ char buffer[sizeof(struct squashfs_dir_index) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_index *index = (struct squashfs_dir_index *) buffer; + char str[SQUASHFS_NAME_LEN + 1]; + + TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count); @@ -1573,187 +1818,264 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + strncpy(str, name, size); + str[size] = '\0'; + -+ for(i = 0; i < i_count; i++) { -+ if(msBlk->swap) { -+ squashfs_dir_index sindex; -+ squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset, -+ sizeof(sindex), &index_start, &index_offset); ++ 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(squashfs_dir_index), &index_start, &index_offset); ++ 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); ++ 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) ++ if (strcmp(index->name, str) > 0) + break; + + length = index->index; -+ *next_block = index->start_block + sBlk->directory_table_start; ++ *next_block = index->start_block + sblk->directory_table_start; + } + + *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ return length; ++ return length + 3; +} + -+ ++ +static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir) +{ + struct inode *i = file->f_dentry->d_inode; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)i->i_sb->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; -+ int next_block = SQUASHFS_I(i)->start_block + sBlk->directory_table_start, next_offset = -+ SQUASHFS_I(i)->offset, length = 0, dirs_read = 0, dir_count; -+ squashfs_dir_header dirh; -+ char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1]; -+ squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer; -+ -+ TRACE("Entered squashfs_readdir [%x:%x]\n", next_block, next_offset); -+ -+ lock_kernel(); ++ 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, dirs_read = 0, ++ dir_count; ++ struct squashfs_dir_header dirh; ++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer; ++ ++ TRACE("Entered squashfs_readdir [%llx:%x]\n", next_block, next_offset); ++ ++ 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; ++ dirs_read++; ++ } + -+ 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); ++ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_start, ++ SQUASHFS_I(i)->u.s2.directory_index_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_count, ++ file->f_pos); + -+ while(length < i->i_size) { ++ while (length < i_size_read(i)) { + /* read directory header */ -+ if(msBlk->swap) { -+ squashfs_dir_header sdirh; -+ if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block, -+ next_offset, sizeof(sdirh), &next_block, &next_offset)) ++ 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)) ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) + goto failed_read; ++ + length += sizeof(dirh); + } + + dir_count = dirh.count + 1; -+ while(dir_count--) { -+ if(msBlk->swap) { -+ squashfs_dir_entry sdire; -+ if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire, next_block, -+ next_offset, sizeof(sdire), &next_block, &next_offset)) ++ 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)) ++ 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)) ++ 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) ++ 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("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"); -+ unlock_kernel(); -+ return dirs_read; ++ goto finish; + } -+ + file->f_pos = length; -+ dirs_read ++; ++ dirs_read++; + } + } + -+ unlock_kernel(); ++finish: + return dirs_read; + +failed_read: -+ unlock_kernel(); -+ ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset); ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); + return 0; +} + + -+static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry, struct nameidata *nd) ++static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry, ++ struct nameidata *nd) +{ -+ const unsigned char *name =dentry->d_name.name; ++ const unsigned char *name = dentry->d_name.name; + int len = dentry->d_name.len; + struct inode *inode = NULL; -+ squashfs_sb_info *msBlk = (squashfs_sb_info *)i->i_sb->s_fs_info; -+ squashfs_super_block *sBlk = &msBlk->sBlk; -+ int next_block = SQUASHFS_I(i)->start_block + sBlk->directory_table_start, next_offset = -+ SQUASHFS_I(i)->offset, length = 0, dir_count; -+ squashfs_dir_header dirh; -+ char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN]; -+ squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer; -+ int squashfs_2_1 = sBlk->s_major == 2 && sBlk->s_minor == 1; -+ -+ TRACE("Entered squashfs_lookup [%x:%x]\n", next_block, next_offset); -+ -+ lock_kernel(); -+ -+ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, SQUASHFS_I(i)->u.s2.directory_index_start, -+ SQUASHFS_I(i)->u.s2.directory_index_offset, SQUASHFS_I(i)->u.s2.directory_index_count, name, len); -+ -+ while(length < i->i_size) { ++ 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; ++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN]; ++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer; ++ ++ 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) { -+ squashfs_dir_header sdirh; -+ if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block, next_offset, -+ sizeof(sdirh), &next_block, &next_offset)) ++ 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)) ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) + goto failed_read; ++ + length += sizeof(dirh); + } + + dir_count = dirh.count + 1; -+ while(dir_count--) { -+ if(msBlk->swap) { -+ squashfs_dir_entry sdire; -+ if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire, -+ next_block,next_offset, sizeof(sdire), &next_block, &next_offset)) ++ 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)) ++ 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)) ++ if (!squashfs_get_cached_block(i->i_sb, dire->name, ++ next_block, next_offset, dire->size + 1, ++ &next_block, &next_offset)) + goto failed_read; ++ + length += dire->size + 1; + -+ if(squashfs_2_1 && name[0] < dire->name[0]) ++ if (name[0] < dire->name[0]) + goto exit_loop; + -+ if((len == dire->size + 1) && !strncmp(name, dire->name, len)) { -+ squashfs_inode ino = SQUASHFS_MKINODE(dirh.start_block, dire->offset); ++ 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\n", -+ name, 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 = (msBlk->iget)(i->i_sb, ino); ++ inode = (msblk->iget)(i->i_sb, ino); + + goto exit_loop; + } @@ -1762,11 +2084,11 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + +exit_loop: + d_add(dentry, inode); -+ unlock_kernel(); + return ERR_PTR(0); + +failed_read: -+ ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset); ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); + goto exit_loop; +} + @@ -1775,55 +2097,60 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +{ + int i; + -+ if(s->s_fs_info) { -+ squashfs_sb_info *sbi = (squashfs_sb_info *) s->s_fs_info; -+ if(sbi->block_cache) { -+ for(i = 0; i < SQUASHFS_CACHED_BLKS; i++) -+ if(sbi->block_cache[i].block != SQUASHFS_INVALID_BLK) ++ 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); -+ kfree(sbi->block_cache); -+ } -+ if(sbi->read_data) kfree(sbi->read_data); -+ if(sbi->read_page) kfree(sbi->read_page); -+ if(sbi->uid) kfree(sbi->uid); -+ if(sbi->fragment) { -+ for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) -+ if(sbi->fragment[i].data != NULL) -+ SQUASHFS_FREE(sbi->fragment[i].data); -+ kfree(sbi->fragment); -+ } -+ if(sbi->fragment_index) kfree(sbi->fragment_index); ++ 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_data); ++ kfree(sbi->read_page); ++ kfree(sbi->uid); ++ kfree(sbi->fragment_index); ++ kfree(sbi->fragment_index_2); ++ kfree(sbi->meta_index); + kfree(s->s_fs_info); + s->s_fs_info = NULL; + } +} + + -+static struct super_block *squashfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) ++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); ++ 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) -+ return err; ++ if (err) ++ goto out; + -+ printk(KERN_INFO "Squashfs 2.2 (released 2005/07/03) (C) 2002-2005 Phillip Lougher\n"); ++ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) " ++ "Phillip Lougher\n"); + -+ if(!(stream.workspace = (char *) vmalloc(zlib_inflate_workspacesize()))) { ++ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) { + ERROR("Failed to allocate zlib workspace\n"); + destroy_inodecache(); -+ return -ENOMEM; ++ err = -ENOMEM; ++ goto out; + } + -+ if((err = register_filesystem(&squashfs_fs_type))) { ++ if ((err = register_filesystem(&squashfs_fs_type))) { + vfree(stream.workspace); + destroy_inodecache(); + } + ++out: + return err; +} + @@ -1836,13 +2163,13 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +} + + -+static kmem_cache_t * squashfs_inode_cachep; ++static struct kmem_cache * squashfs_inode_cachep; + + +static struct inode *squashfs_alloc_inode(struct super_block *sb) +{ + struct squashfs_inode_info *ei; -+ ei = (struct squashfs_inode_info *)kmem_cache_alloc(squashfs_inode_cachep, SLAB_KERNEL); ++ ei = kmem_cache_alloc(squashfs_inode_cachep, GFP_KERNEL); + if (!ei) + return NULL; + return &ei->vfs_inode; @@ -1855,22 +2182,22 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f +} + + -+static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) ++static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) +{ -+ struct squashfs_inode_info *ei = (struct squashfs_inode_info *) foo; ++ struct squashfs_inode_info *ei = foo; + + if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == -+ SLAB_CTOR_CONSTRUCTOR) ++ SLAB_CTOR_CONSTRUCTOR) + inode_init_once(&ei->vfs_inode); +} -+ + -+static int init_inodecache(void) ++ ++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); ++ sizeof(struct squashfs_inode_info), ++ 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT, ++ init_once, NULL); + if (squashfs_inode_cachep == NULL) + return -ENOMEM; + return 0; @@ -1879,37 +2206,894 @@ diff --new-file -urp linux-2.6.12/fs/squashfs/inode.c linux-2.6.12-squashfs2.2/f + +static void destroy_inodecache(void) +{ -+ if (kmem_cache_destroy(squashfs_inode_cachep)) -+ printk(KERN_INFO "squashfs_inode_cache: not all structures were freed\n"); ++ kmem_cache_destroy(squashfs_inode_cachep); +} + + +module_init(init_squashfs_fs); +module_exit(exit_squashfs_fs); +MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem"); -+MODULE_AUTHOR("Phillip Lougher "); ++MODULE_AUTHOR("Phillip Lougher "); +MODULE_LICENSE("GPL"); -diff --new-file -urp linux-2.6.12/fs/squashfs/Makefile linux-2.6.12-squashfs2.2/fs/squashfs/Makefile ---- linux-2.6.12/fs/squashfs/Makefile 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/fs/squashfs/Makefile 2005-07-04 02:35:35.000000000 +0100 +Index: linux-2.6.21.7/fs/squashfs/Makefile +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/fs/squashfs/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the linux squashfs routines. +# + +obj-$(CONFIG_SQUASHFS) += squashfs.o ++squashfs-y += inode.o ++squashfs-y += squashfs2_0.o +Index: linux-2.6.21.7/fs/squashfs/squashfs2_0.c +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/fs/squashfs/squashfs2_0.c +@@ -0,0 +1,758 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher ++ * ++ * 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 ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#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)) { ++ 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 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->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ struct inode *i = new_inode(s); ++ ++ if (i) { ++ 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]; ++ } ++ ++ return i; ++} + -+squashfs-objs := inode.o -diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs.h ---- linux-2.6.12/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs.h 2005-07-04 02:35:35.000000000 +0100 -@@ -0,0 +1,519 @@ ++ ++static struct inode *squashfs_iget_2(struct super_block *s, squashfs_inode_t inode) ++{ ++ struct inode *i; ++ 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 = 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.tv_sec = inodep->mtime; ++ i->i_atime.tv_sec = inodep->mtime; ++ i->i_ctime.tv_sec = inodep->mtime; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ i->i_blksize = PAGE_CACHE_SIZE; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = 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.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; ++ ++ 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.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; ++ ++ 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, ++ 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: { ++ 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->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; ++ 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->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, dirs_read = 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; ++ dirs_read++; ++ } ++ } ++ ++finish: ++ return dirs_read; ++ ++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, ++ 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; ++ 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, %lld\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; ++} +Index: linux-2.6.21.7/fs/squashfs/squashfs.h +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/fs/squashfs/squashfs.h +@@ -0,0 +1,86 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher ++ * ++ * 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); ++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 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 +Index: linux-2.6.21.7/include/linux/squashfs_fs.h +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/include/linux/squashfs_fs.h +@@ -0,0 +1,911 @@ +#ifndef SQUASHFS_FS +#define SQUASHFS_FS ++ +/* + * Squashfs + * -+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License @@ -1928,6 +3112,10 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas + * 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) @@ -1935,9 +3123,9 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas +#define SQUASHFS_ALLOC(a) kmalloc(a, GFP_KERNEL) +#define SQUASHFS_FREE(a) kfree(a) +#endif -+#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE -+#define SQUASHFS_MAJOR 2 -+#define SQUASHFS_MINOR 1 ++#define SQUASHFS_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 @@ -1960,8 +3148,9 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas +#define SQUASHFS_NAME_LEN 256 + +#define SQUASHFS_INVALID ((long long) 0xffffffffffff) -+#define SQUASHFS_INVALID_BLK ((long long) 0xffffffff) -+#define SQUASHFS_USED_BLK ((long long) 0xfffffffe) ++#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 @@ -1971,15 +3160,34 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas +#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)) ++ ++#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 @@ -1990,73 +3198,113 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas +#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 */ ++/* 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) ++ (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)) ++#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 ++ * Inode number ops. Inodes consist of a compressed block number, and an ++ * uncompressed offset within that block + */ +#define SQUASHFS_INODE_BLK(a) ((unsigned int) ((a) >> 16)) ++ +#define SQUASHFS_INODE_OFFSET(a) ((unsigned int) ((a) & 0xffff)) -+#define SQUASHFS_MKINODE(A, B) ((squashfs_inode)(((squashfs_inode) (A) << 16)\ -+ + (B))) ++ ++#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)) ++#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 */ -+typedef unsigned int squashfs_fragment_index; -+#define SQUASHFS_FRAGMENT_BYTES(A) (A * sizeof(squashfs_fragment_entry)) -+#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / SQUASHFS_METADATA_SIZE) -+#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % SQUASHFS_METADATA_SIZE) -+#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + SQUASHFS_METADATA_SIZE - 1) / SQUASHFS_METADATA_SIZE) -+#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) * sizeof(squashfs_fragment_index)) ++#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 32 -+#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << (SQUASHFS_MAX_FILE_SIZE_LOG - 1)) ++#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 unsigned int squashfs_block; -+typedef long long squashfs_inode; ++typedef long long squashfs_block_t; ++typedef long long squashfs_inode_t; + -+typedef unsigned int squashfs_uid; -+ -+typedef struct squashfs_super_block { ++struct squashfs_super_block { + unsigned int s_magic; + unsigned int inodes; -+ unsigned int bytes_used; -+ unsigned int uid_start; -+ unsigned int guid_start; -+ unsigned int inode_table_start; -+ unsigned int directory_table_start; ++ unsigned int 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; @@ -2065,108 +3313,125 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas + unsigned int no_uids:8; + unsigned int no_guids:8; + unsigned int mkfs_time /* time of filesystem creation */; -+ squashfs_inode root_inode; ++ squashfs_inode_t root_inode; + unsigned int block_size; + unsigned int fragments; -+ unsigned int fragment_table_start; -+} __attribute__ ((packed)) squashfs_super_block; -+ -+typedef struct { -+ unsigned int index:27; -+ unsigned int start_block:29; ++ unsigned 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)) squashfs_dir_index; -+ -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+} __attribute__ ((packed)) squashfs_base_inode_header; -+ -+typedef squashfs_base_inode_header squashfs_ipc_inode_header; -+ -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ ++} __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)) squashfs_dev_inode_header; -+ -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ ++} __attribute__ ((packed)); ++ ++struct squashfs_symlink_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; + unsigned short symlink_size; + char symlink[0]; -+} __attribute__ ((packed)) squashfs_symlink_inode_header; ++} __attribute__ ((packed)); + -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned int mtime; -+ squashfs_block start_block; ++struct squashfs_reg_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ squashfs_block_t start_block; + unsigned int fragment; + unsigned int offset; -+ unsigned int file_size:SQUASHFS_MAX_FILE_SIZE_LOG; ++ unsigned int file_size; + unsigned short block_list[0]; -+} __attribute__ ((packed)) squashfs_reg_inode_header; ++} __attribute__ ((packed)); + -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ ++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 mtime; -+ unsigned int start_block:24; -+} __attribute__ ((packed)) squashfs_dir_inode_header; ++ unsigned int start_block; ++ unsigned int parent_inode; ++} __attribute__ ((packed)); + -+typedef struct { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ ++struct squashfs_ldir_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; + unsigned int file_size:27; + unsigned int offset:13; -+ unsigned int mtime; -+ unsigned int start_block:24; ++ unsigned int start_block; + unsigned int i_count:16; -+ squashfs_dir_index index[0]; -+} __attribute__ ((packed)) squashfs_ldir_inode_header; -+ -+typedef union { -+ squashfs_base_inode_header base; -+ squashfs_dev_inode_header dev; -+ squashfs_symlink_inode_header symlink; -+ squashfs_reg_inode_header reg; -+ squashfs_dir_inode_header dir; -+ squashfs_ldir_inode_header ldir; -+ squashfs_ipc_inode_header ipc; -+} squashfs_inode_header; -+ -+typedef struct { ++ unsigned int 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)) squashfs_dir_entry; ++} __attribute__ ((packed)); + -+typedef struct { ++struct squashfs_dir_header { + unsigned int count:8; -+ unsigned int start_block:24; -+} __attribute__ ((packed)) squashfs_dir_header; -+ -+typedef struct { + unsigned int start_block; ++ unsigned int inode_number; ++} __attribute__ ((packed)); ++ ++struct squashfs_fragment_entry { ++ long long start_block; + unsigned int size; -+} __attribute__ ((packed)) squashfs_fragment_entry; ++ unsigned int unused; ++} __attribute__ ((packed)); + +extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen); +extern int squashfs_uncompress_init(void); @@ -2174,20 +3439,28 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas + +/* + * 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. ++ * 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_MEMSET(s, d, sizeof(squashfs_super_block));\ ++ 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, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->uid_start, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->guid_start, d, 128, 32);\ -+ SQUASHFS_SWAP((s)->inode_table_start, d, 160, 32);\ -+ SQUASHFS_SWAP((s)->directory_table_start, d, 192, 32);\ ++ SQUASHFS_SWAP((s)->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);\ @@ -2199,153 +3472,218 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas + SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\ + SQUASHFS_SWAP((s)->block_size, d, 408, 32);\ + SQUASHFS_SWAP((s)->fragments, d, 440, 32);\ -+ SQUASHFS_SWAP((s)->fragment_table_start, d, 472, 32);\ ++ 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_HEADER(s, d, n) {\ ++#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_BASE_INODE_HEADER(s, d, sizeof(squashfs_ipc_inode_header)) ++#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_BASE_INODE_HEADER(s, d, sizeof(squashfs_dev_inode_header));\ -+ SQUASHFS_SWAP((s)->rdev, d, 32, 16);\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header));\ -+ SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header));\ -+ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->fragment, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->offset, d, 128, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 160, SQUASHFS_MAX_FILE_SIZE_LOG);\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header));\ -+ SQUASHFS_SWAP((s)->file_size, d, 32, 19);\ -+ SQUASHFS_SWAP((s)->offset, d, 51, 13);\ -+ SQUASHFS_SWAP((s)->mtime, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 96, 24);\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_ldir_inode_header));\ -+ SQUASHFS_SWAP((s)->file_size, d, 32, 27);\ -+ SQUASHFS_SWAP((s)->offset, d, 59, 13);\ -+ SQUASHFS_SWAP((s)->mtime, d, 72, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 104, 24);\ -+ SQUASHFS_SWAP((s)->i_count, d, 128, 16);\ ++ 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_MEMSET(s, d, sizeof(squashfs_dir_index));\ -+ SQUASHFS_SWAP((s)->index, d, 0, 27);\ -+ SQUASHFS_SWAP((s)->start_block, d, 27, 29);\ -+ SQUASHFS_SWAP((s)->size, d, 56, 8);\ ++ 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_MEMSET(s, d, sizeof(squashfs_dir_header));\ ++ 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, 24);\ ++ SQUASHFS_SWAP((s)->start_block, d, 8, 32);\ ++ SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\ +} + +#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\ -+ SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_entry));\ ++ 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_MEMSET(s, d, sizeof(squashfs_fragment_entry));\ -+ SQUASHFS_SWAP((s)->start_block, d, 0, 32);\ -+ SQUASHFS_SWAP((s)->size, d, 32, 32);\ ++ 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)\ ++ 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)\ ++ 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)\ ++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ ++ bits)\ + SQUASHFS_SWAP(s[entry], d, bit_position, bits);\ +} + -+#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_INTS(s, d, n) ++#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n) ++ ++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY + -+#ifdef SQUASHFS_1_0_COMPATIBILITY -+typedef struct { ++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)) squashfs_base_inode_header_1; ++} __attribute__ ((packed)); + -+typedef struct { ++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)) squashfs_ipc_inode_header_1; ++} __attribute__ ((packed)); + -+typedef struct { ++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)) squashfs_dev_inode_header_1; -+ -+typedef struct { ++} __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)) squashfs_symlink_inode_header_1; ++} __attribute__ ((packed)); + -+typedef struct { ++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; -+ squashfs_block start_block; -+ unsigned int file_size:SQUASHFS_MAX_FILE_SIZE_LOG; ++ unsigned int start_block; ++ unsigned int file_size:32; + unsigned short block_list[0]; -+} __attribute__ ((packed)) squashfs_reg_inode_header_1; ++} __attribute__ ((packed)); + -+typedef struct { ++struct squashfs_dir_inode_header_1 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:4; /* index into uid table */ @@ -2354,85 +3692,323 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs.h linux-2.6.12-squas + unsigned int offset:13; + unsigned int mtime; + unsigned int start_block:24; -+} __attribute__ ((packed)) squashfs_dir_inode_header_1; ++} __attribute__ ((packed)); + -+#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\ ++#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);\ ++ 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_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_ipc_inode_header_1));\ ++ 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_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_dev_inode_header_1));\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header_1));\ ++ 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_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header_1));\ ++ 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, SQUASHFS_MAX_FILE_SIZE_LOG);\ ++ SQUASHFS_SWAP((s)->file_size, d, 88, 32);\ +} + +#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header_1));\ ++ 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 ++ * bitfields and different bitfield placing conventions on differing ++ * architectures + */ ++ +#include ++ +#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) ++#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) ++ /* convert from big endian to little endian */ ++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ ++ tbits, 64 - tbits - b_pos) +#endif + +#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\ -+ int bits;\ -+ int b_pos = pos % 8;\ -+ unsigned long long val = 0;\ -+ unsigned char *s = (unsigned char *)p + (pos / 8);\ -+ unsigned char *d = ((unsigned char *) &val) + 7;\ ++ 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 --new-file -urp linux-2.6.12/include/linux/squashfs_fs_i.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_i.h ---- linux-2.6.12/include/linux/squashfs_fs_i.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_i.h 2005-07-04 02:35:35.000000000 +0100 -@@ -0,0 +1,43 @@ +Index: linux-2.6.21.7/include/linux/squashfs_fs_i.h +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/include/linux/squashfs_fs_i.h +@@ -0,0 +1,45 @@ +#ifndef SQUASHFS_FS_I +#define SQUASHFS_FS_I +/* + * Squashfs + * -+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License @@ -2451,35 +4027,38 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs_i.h linux-2.6.12-squ + * squashfs_fs_i.h + */ + -+typedef struct squashfs_inode_info { -+ unsigned int start_block; -+ unsigned int block_list_start; ++struct squashfs_inode_info { ++ long long start_block; + unsigned int offset; + union { + struct { -+ unsigned int fragment_start_block; ++ long long fragment_start_block; + unsigned int fragment_size; + unsigned int fragment_offset; ++ long long block_list_start; + } s1; + struct { -+ unsigned int directory_index_start; ++ 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; -+ } squashfs_inode_info; ++}; +#endif -diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs_sb.h linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_sb.h ---- linux-2.6.12/include/linux/squashfs_fs_sb.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/include/linux/squashfs_fs_sb.h 2005-07-04 02:35:35.000000000 +0100 -@@ -0,0 +1,65 @@ +Index: linux-2.6.21.7/include/linux/squashfs_fs_sb.h +=================================================================== +--- /dev/null ++++ linux-2.6.21.7/include/linux/squashfs_fs_sb.h +@@ -0,0 +1,74 @@ +#ifndef SQUASHFS_FS_SB +#define SQUASHFS_FS_SB +/* + * Squashfs + * -+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License @@ -2500,48 +4079,57 @@ diff --new-file -urp linux-2.6.12/include/linux/squashfs_fs_sb.h linux-2.6.12-sq + +#include + -+typedef struct { -+ unsigned int block; ++struct squashfs_cache { ++ long long block; + int length; -+ unsigned int next_index; ++ long long next_index; + char *data; -+ } squashfs_cache; ++}; + +struct squashfs_fragment_cache { -+ unsigned int block; ++ long long block; + int length; + unsigned int locked; + char *data; -+ }; ++}; + -+typedef struct squashfs_sb_info { -+ squashfs_super_block sBlk; ++struct squashfs_sb_info { ++ struct squashfs_super_block sblk; + int devblksize; + int devblksize_log2; + int swap; -+ squashfs_cache *block_cache; ++ struct squashfs_cache *block_cache; + struct squashfs_fragment_cache *fragment; + int next_cache; + int next_fragment; -+ squashfs_uid *uid; -+ squashfs_uid *guid; -+ squashfs_fragment_index *fragment_index; ++ 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 inode *(*iget)(struct super_block *s, squashfs_inode inode); -+ unsigned int (*read_blocklist)(struct inode *inode, int index, int readahead_blks, -+ char *block_list, unsigned short **block_p, unsigned int *bsize); -+ } squashfs_sb_info; ++ struct meta_index *meta_index; ++ 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 -diff --new-file -urp linux-2.6.12/init/do_mounts_rd.c linux-2.6.12-squashfs2.2/init/do_mounts_rd.c ---- linux-2.6.12/init/do_mounts_rd.c 2005-06-17 20:48:29.000000000 +0100 -+++ linux-2.6.12-squashfs2.2/init/do_mounts_rd.c 2005-07-04 02:35:35.000000000 +0100 +Index: linux-2.6.21.7/init/do_mounts_rd.c +=================================================================== +--- linux-2.6.21.7.orig/init/do_mounts_rd.c ++++ linux-2.6.21.7/init/do_mounts_rd.c @@ -5,6 +5,7 @@ #include #include