diff options
4 files changed, 4271 insertions, 1 deletions
diff --git a/packages/linux/linux-rp-2.6.23+2.6.24-rc8/connectplus-prevent-oops-HACK.patch b/packages/linux/linux-rp-2.6.23+2.6.24-rc8/connectplus-prevent-oops-HACK.patch new file mode 100644 index 0000000000..b5439c62e7 --- /dev/null +++ b/packages/linux/linux-rp-2.6.23+2.6.24-rc8/connectplus-prevent-oops-HACK.patch @@ -0,0 +1,17 @@ +Index: linux-2.6.21/drivers/net/wireless/hostap/hostap_hw.c +=================================================================== +--- linux-2.6.21.orig/drivers/net/wireless/hostap/hostap_hw.c 2007-07-07 12:45:39.000000000 +0100 ++++ linux-2.6.21/drivers/net/wireless/hostap/hostap_hw.c 2007-07-07 12:47:30.000000000 +0100 +@@ -2666,6 +2666,12 @@ + iface = netdev_priv(dev); + local = iface->local; + ++ if(dev->base_addr == 0) ++ { ++ printk(KERN_DEBUG "%s: IRQ before base_addr set\n", dev->name); ++ return IRQ_HANDLED; ++ } ++ + prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); + + if (local->func->card_present && !local->func->card_present(local)) { diff --git a/packages/linux/linux-rp-2.6.23+2.6.24-rc8/squashfs3.3.patch b/packages/linux/linux-rp-2.6.23+2.6.24-rc8/squashfs3.3.patch new file mode 100644 index 0000000000..cb9a5c49e4 --- /dev/null +++ b/packages/linux/linux-rp-2.6.23+2.6.24-rc8/squashfs3.3.patch @@ -0,0 +1,4234 @@ +diff -x .gitignore -Nurp linux-2.6.24/fs/Kconfig linux-2.6.24-squashfs3.3/fs/Kconfig +--- linux-2.6.24/fs/Kconfig 2007-10-25 17:41:45.000000000 +0100 ++++ linux-2.6.24-squashfs3.3/fs/Kconfig 2007-11-01 05:06:25.000000000 +0000 +@@ -1396,6 +1396,56 @@ config CRAMFS + + If unsure, say N. + ++config SQUASHFS ++ tristate "SquashFS 3.3 - Squashed file system support" ++ select ZLIB_INFLATE ++ help ++ Saying Y here includes support for SquashFS 3.3 (a Compressed ++ Read-Only File System). Squashfs is a highly compressed read-only ++ filesystem for Linux. It uses zlib compression to compress both ++ files, inodes and directories. Inodes in the system are very small ++ and all blocks are packed to minimise data overhead. Block sizes ++ greater than 4K are supported up to a maximum of 1 Mbytes (default ++ block size 128K). SquashFS 3.3 supports 64 bit filesystems and files ++ (larger than 4GB), full uid/gid information, hard links and timestamps. ++ ++ Squashfs is intended for general read-only filesystem use, for ++ archival use (i.e. in cases where a .tar.gz file may be used), and in ++ embedded systems where low overhead is needed. Further information ++ and filesystem tools are available from http://squashfs.sourceforge.net. ++ ++ If you want to compile this as a module ( = code which can be ++ inserted in and removed from the running kernel whenever you want), ++ say M here and read <file:Documentation/modules.txt>. The module ++ will be called squashfs. Note that the root file system (the one ++ containing the directory /) cannot be compiled as a module. ++ ++ If unsure, say N. ++ ++config SQUASHFS_EMBEDDED ++ ++ bool "Additional option for memory-constrained systems" ++ depends on SQUASHFS ++ default n ++ help ++ Saying Y here allows you to specify cache size. ++ ++ If unsure, say N. ++ ++config SQUASHFS_FRAGMENT_CACHE_SIZE ++ int "Number of fragments cached" if SQUASHFS_EMBEDDED ++ depends on SQUASHFS ++ default "3" ++ help ++ By default SquashFS caches the last 3 fragments read from ++ the filesystem. Increasing this amount may mean SquashFS ++ has to re-read fragments less often from disk, at the expense ++ of extra system memory. Decreasing this amount will mean ++ SquashFS uses less memory at the expense of extra reads from disk. ++ ++ Note there must be at least one cached fragment. Anything ++ much more than three will probably not make much difference. ++ + config VXFS_FS + tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" + depends on BLOCK +diff -x .gitignore -Nurp linux-2.6.24/fs/Makefile linux-2.6.24-squashfs3.3/fs/Makefile +--- linux-2.6.24/fs/Makefile 2007-10-25 17:41:45.000000000 +0100 ++++ linux-2.6.24-squashfs3.3/fs/Makefile 2007-11-01 05:08:09.000000000 +0000 +@@ -72,6 +72,7 @@ obj-$(CONFIG_JBD) += jbd/ + obj-$(CONFIG_JBD2) += jbd2/ + obj-$(CONFIG_EXT2_FS) += ext2/ + obj-$(CONFIG_CRAMFS) += cramfs/ ++obj-$(CONFIG_SQUASHFS) += squashfs/ + obj-y += ramfs/ + obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ + obj-$(CONFIG_CODA_FS) += coda/ +diff -x .gitignore -Nurp linux-2.6.24/fs/squashfs/inode.c linux-2.6.24-squashfs3.3/fs/squashfs/inode.c +--- linux-2.6.24/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.24-squashfs3.3/fs/squashfs/inode.c 2007-11-01 05:05:00.000000000 +0000 +@@ -0,0 +1,2192 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 ++ * Phillip Lougher <phillip@lougher.demon.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * inode.c ++ */ ++ ++#include <linux/squashfs_fs.h> ++#include <linux/module.h> ++#include <linux/zlib.h> ++#include <linux/fs.h> ++#include <linux/squashfs_fs_sb.h> ++#include <linux/squashfs_fs_i.h> ++#include <linux/buffer_head.h> ++#include <linux/vfs.h> ++#include <linux/vmalloc.h> ++#include <linux/smp_lock.h> ++#include <linux/exportfs.h> ++ ++#include "squashfs.h" ++ ++int squashfs_cached_blks; ++ ++static void vfs_read_inode(struct inode *i); ++static struct dentry *squashfs_get_parent(struct dentry *child); ++static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode); ++static int squashfs_statfs(struct dentry *, struct kstatfs *); ++static int squashfs_symlink_readpage(struct file *file, struct page *page); ++static long long read_blocklist(struct inode *inode, int index, ++ int readahead_blks, char *block_list, ++ unsigned short **block_p, unsigned int *bsize); ++static int squashfs_readpage(struct file *file, struct page *page); ++static int squashfs_readdir(struct file *, void *, filldir_t); ++static struct dentry *squashfs_lookup(struct inode *, struct dentry *, ++ struct nameidata *); ++static int squashfs_remount(struct super_block *s, int *flags, char *data); ++static void squashfs_put_super(struct super_block *); ++static int squashfs_get_sb(struct file_system_type *,int, const char *, void *, ++ struct vfsmount *); ++static struct inode *squashfs_alloc_inode(struct super_block *sb); ++static void squashfs_destroy_inode(struct inode *inode); ++static int init_inodecache(void); ++static void destroy_inodecache(void); ++ ++static struct file_system_type squashfs_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "squashfs", ++ .get_sb = squashfs_get_sb, ++ .kill_sb = kill_block_super, ++ .fs_flags = FS_REQUIRES_DEV ++}; ++ ++static const unsigned char squashfs_filetype_table[] = { ++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK ++}; ++ ++static struct super_operations squashfs_super_ops = { ++ .alloc_inode = squashfs_alloc_inode, ++ .destroy_inode = squashfs_destroy_inode, ++ .statfs = squashfs_statfs, ++ .put_super = squashfs_put_super, ++ .remount_fs = squashfs_remount ++}; ++ ++static struct super_operations squashfs_export_super_ops = { ++ .alloc_inode = squashfs_alloc_inode, ++ .destroy_inode = squashfs_destroy_inode, ++ .statfs = squashfs_statfs, ++ .put_super = squashfs_put_super, ++ .read_inode = vfs_read_inode ++}; ++ ++static struct export_operations squashfs_export_ops = { ++ .get_parent = squashfs_get_parent ++}; ++ ++SQSH_EXTERN const struct address_space_operations squashfs_symlink_aops = { ++ .readpage = squashfs_symlink_readpage ++}; ++ ++SQSH_EXTERN const struct address_space_operations squashfs_aops = { ++ .readpage = squashfs_readpage ++}; ++ ++static const struct file_operations squashfs_dir_ops = { ++ .read = generic_read_dir, ++ .readdir = squashfs_readdir ++}; ++ ++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = { ++ .lookup = squashfs_lookup ++}; ++ ++ ++static struct buffer_head *get_block_length(struct super_block *s, ++ int *cur_index, int *offset, int *c_byte) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ unsigned short temp; ++ struct buffer_head *bh; ++ ++ if (!(bh = sb_bread(s, *cur_index))) ++ goto out; ++ ++ if (msblk->devblksize - *offset == 1) { ++ if (msblk->swap) ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ else ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ if (msblk->swap) ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ bh->b_data); ++ else ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ bh->b_data); ++ *c_byte = temp; ++ *offset = 1; ++ } else { ++ if (msblk->swap) { ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } else { ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } ++ *c_byte = temp; ++ *offset += 2; ++ } ++ ++ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) { ++ if (*offset == msblk->devblksize) { ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ *offset = 0; ++ } ++ if (*((unsigned char *) (bh->b_data + *offset)) != ++ SQUASHFS_MARKER_BYTE) { ++ ERROR("Metadata block marker corrupt @ %x\n", ++ *cur_index); ++ brelse(bh); ++ goto out; ++ } ++ (*offset)++; ++ } ++ return bh; ++ ++out: ++ return NULL; ++} ++ ++ ++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer, ++ long long index, unsigned int length, ++ long long *next_index, int srclength) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ struct buffer_head **bh; ++ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1); ++ unsigned int cur_index = index >> msblk->devblksize_log2; ++ int bytes, avail_bytes, b = 0, k = 0; ++ unsigned int compressed; ++ unsigned int c_byte = length; ++ ++ bh = kmalloc(((sblk->block_size >> msblk->devblksize_log2) + 1) * ++ sizeof(struct buffer_head *), GFP_KERNEL); ++ if (bh == NULL) ++ goto read_failure; ++ ++ if (c_byte) { ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte); ++ c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d, src size %d\n", index, ++ compressed ? "" : "un", (unsigned int) c_byte, srclength); ++ ++ if (c_byte > srclength || index < 0 || (index + c_byte) > sblk->bytes_used) ++ goto read_failure; ++ ++ bh[0] = sb_getblk(s, cur_index); ++ if (bh[0] == NULL) ++ goto block_release; ++ ++ for (b = 1; bytes < c_byte; b++) { ++ bh[b] = sb_getblk(s, ++cur_index); ++ if (bh[b] == NULL) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b, bh); ++ } else { ++ if (index < 0 || (index + 2) > sblk->bytes_used) ++ goto read_failure; ++ ++ bh[0] = get_block_length(s, &cur_index, &offset, &c_byte); ++ if (bh[0] == NULL) ++ goto read_failure; ++ ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED(c_byte); ++ c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); ++ ++ if (c_byte > srclength || (index + c_byte) > sblk->bytes_used) ++ goto read_failure; ++ ++ for (b = 1; bytes < c_byte; b++) { ++ bh[b] = sb_getblk(s, ++cur_index); ++ if (bh[b] == NULL) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b - 1, bh + 1); ++ } ++ ++ if (compressed) { ++ int zlib_err = 0; ++ ++ /* ++ * uncompress block ++ */ ++ ++ mutex_lock(&msblk->read_data_mutex); ++ ++ msblk->stream.next_out = buffer; ++ msblk->stream.avail_out = srclength; ++ ++ for (bytes = 0; k < b; k++) { ++ avail_bytes = min(c_byte - bytes, msblk->devblksize - offset); ++ ++ wait_on_buffer(bh[k]); ++ if (!buffer_uptodate(bh[k])) ++ goto release_mutex; ++ ++ msblk->stream.next_in = bh[k]->b_data + offset; ++ msblk->stream.avail_in = avail_bytes; ++ ++ if (k == 0) { ++ zlib_err = zlib_inflateInit(&msblk->stream); ++ if (zlib_err != Z_OK) { ++ ERROR("zlib_inflateInit returned unexpected result 0x%x," ++ " srclength %d\n", zlib_err, srclength); ++ goto release_mutex; ++ } ++ ++ if (avail_bytes == 0) { ++ offset = 0; ++ brelse(bh[k]); ++ continue; ++ } ++ } ++ ++ zlib_err = zlib_inflate(&msblk->stream, Z_NO_FLUSH); ++ if (zlib_err != Z_OK && zlib_err != Z_STREAM_END) { ++ ERROR("zlib_inflate returned unexpected result 0x%x," ++ " srclength %d, avail_in %d, avail_out %d\n", zlib_err, ++ srclength, msblk->stream.avail_in, msblk->stream.avail_out); ++ goto release_mutex; ++ } ++ ++ bytes += avail_bytes; ++ offset = 0; ++ brelse(bh[k]); ++ } ++ ++ if (zlib_err != Z_STREAM_END) ++ goto release_mutex; ++ ++ zlib_err = zlib_inflateEnd(&msblk->stream); ++ if (zlib_err != Z_OK) { ++ ERROR("zlib_inflateEnd returned unexpected result 0x%x," ++ " srclength %d\n", zlib_err, srclength); ++ goto release_mutex; ++ } ++ bytes = msblk->stream.total_out; ++ mutex_unlock(&msblk->read_data_mutex); ++ } else { ++ int i; ++ ++ for(i = 0; i < b; i++) { ++ wait_on_buffer(bh[i]); ++ if (!buffer_uptodate(bh[i])) ++ goto block_release; ++ } ++ ++ for (bytes = 0; k < b; k++) { ++ avail_bytes = min(c_byte - bytes, msblk->devblksize - offset); ++ ++ memcpy(buffer + bytes, bh[k]->b_data + offset, avail_bytes); ++ bytes += avail_bytes; ++ offset = 0; ++ brelse(bh[k]); ++ } ++ } ++ ++ if (next_index) ++ *next_index = index + c_byte + (length ? 0 : ++ (SQUASHFS_CHECK_DATA(msblk->sblk.flags) ? 3 : 2)); ++ ++ kfree(bh); ++ return bytes; ++ ++release_mutex: ++ mutex_unlock(&msblk->read_data_mutex); ++ ++block_release: ++ for (; k < b; k++) ++ brelse(bh[k]); ++ ++read_failure: ++ ERROR("sb_bread failed reading block 0x%x\n", cur_index); ++ kfree(bh); ++ return 0; ++} ++ ++ ++SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, void *buffer, ++ long long block, unsigned int offset, ++ int length, long long *next_block, ++ unsigned int *next_offset) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ int n, i, bytes, return_length = length; ++ long long next_index; ++ ++ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset); ++ ++ while (1) { ++ for (i = 0; i < squashfs_cached_blks; i++) ++ if (msblk->block_cache[i].block == block) ++ break; ++ ++ mutex_lock(&msblk->block_cache_mutex); ++ ++ if (i == squashfs_cached_blks) { ++ /* read inode header block */ ++ if (msblk->unused_cache_blks == 0) { ++ mutex_unlock(&msblk->block_cache_mutex); ++ wait_event(msblk->waitq, msblk->unused_cache_blks); ++ continue; ++ } ++ ++ i = msblk->next_cache; ++ for (n = 0; n < squashfs_cached_blks; n++) { ++ if (msblk->block_cache[i].block != SQUASHFS_USED_BLK) ++ break; ++ i = (i + 1) % squashfs_cached_blks; ++ } ++ ++ msblk->next_cache = (i + 1) % squashfs_cached_blks; ++ ++ if (msblk->block_cache[i].block == SQUASHFS_INVALID_BLK) { ++ msblk->block_cache[i].data = vmalloc(SQUASHFS_METADATA_SIZE); ++ if (msblk->block_cache[i].data == NULL) { ++ ERROR("Failed to allocate cache block\n"); ++ mutex_unlock(&msblk->block_cache_mutex); ++ goto out; ++ } ++ } ++ ++ msblk->block_cache[i].block = SQUASHFS_USED_BLK; ++ msblk->unused_cache_blks --; ++ mutex_unlock(&msblk->block_cache_mutex); ++ ++ msblk->block_cache[i].length = squashfs_read_data(s, ++ msblk->block_cache[i].data, block, 0, &next_index, ++ SQUASHFS_METADATA_SIZE); ++ ++ if (msblk->block_cache[i].length == 0) { ++ ERROR("Unable to read cache block [%llx:%x]\n", block, offset); ++ mutex_lock(&msblk->block_cache_mutex); ++ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; ++ msblk->unused_cache_blks ++; ++ smp_mb(); ++ vfree(msblk->block_cache[i].data); ++ wake_up(&msblk->waitq); ++ mutex_unlock(&msblk->block_cache_mutex); ++ goto out; ++ } ++ ++ mutex_lock(&msblk->block_cache_mutex); ++ msblk->block_cache[i].block = block; ++ msblk->block_cache[i].next_index = next_index; ++ msblk->unused_cache_blks ++; ++ smp_mb(); ++ wake_up(&msblk->waitq); ++ TRACE("Read cache block [%llx:%x]\n", block, offset); ++ } ++ ++ if (msblk->block_cache[i].block != block) { ++ mutex_unlock(&msblk->block_cache_mutex); ++ continue; ++ } ++ ++ bytes = msblk->block_cache[i].length - offset; ++ ++ if (bytes < 1) { ++ mutex_unlock(&msblk->block_cache_mutex); ++ goto out; ++ } else if (bytes >= length) { ++ if (buffer) ++ memcpy(buffer, msblk->block_cache[i].data + offset, length); ++ if (msblk->block_cache[i].length - offset == length) { ++ *next_block = msblk->block_cache[i].next_index; ++ *next_offset = 0; ++ } else { ++ *next_block = block; ++ *next_offset = offset + length; ++ } ++ mutex_unlock(&msblk->block_cache_mutex); ++ goto finish; ++ } else { ++ if (buffer) { ++ memcpy(buffer, msblk->block_cache[i].data + offset, bytes); ++ buffer = (char *) buffer + bytes; ++ } ++ block = msblk->block_cache[i].next_index; ++ mutex_unlock(&msblk->block_cache_mutex); ++ length -= bytes; ++ offset = 0; ++ } ++ } ++ ++finish: ++ return return_length; ++out: ++ return 0; ++} ++ ++ ++static int get_fragment_location(struct super_block *s, unsigned int fragment, ++ long long *fragment_start_block, ++ unsigned int *fragment_size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ long long start_block = ++ msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)]; ++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment); ++ struct squashfs_fragment_entry fragment_entry; ++ ++ if (msblk->swap) { ++ struct squashfs_fragment_entry sfragment_entry; ++ ++ if (!squashfs_get_cached_block(s, &sfragment_entry, start_block, offset, ++ sizeof(sfragment_entry), &start_block, &offset)) ++ goto out; ++ SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry); ++ } else ++ if (!squashfs_get_cached_block(s, &fragment_entry, start_block, offset, ++ sizeof(fragment_entry), &start_block, &offset)) ++ goto out; ++ ++ *fragment_start_block = fragment_entry.start_block; ++ *fragment_size = fragment_entry.size; ++ ++ return 1; ++ ++out: ++ return 0; ++} ++ ++ ++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, ++ struct squashfs_fragment_cache *fragment) ++{ ++ mutex_lock(&msblk->fragment_mutex); ++ fragment->locked --; ++ if (fragment->locked == 0) { ++ msblk->unused_frag_blks ++; ++ smp_mb(); ++ wake_up(&msblk->fragment_wait_queue); ++ } ++ mutex_unlock(&msblk->fragment_mutex); ++} ++ ++ ++SQSH_EXTERN ++struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s, ++ long long start_block, int length) ++{ ++ int i, n; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ while (1) { ++ mutex_lock(&msblk->fragment_mutex); ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS && ++ msblk->fragment[i].block != start_block; i++); ++ ++ if (i == SQUASHFS_CACHED_FRAGMENTS) { ++ if (msblk->unused_frag_blks == 0) { ++ mutex_unlock(&msblk->fragment_mutex); ++ wait_event(msblk->fragment_wait_queue, msblk->unused_frag_blks); ++ continue; ++ } ++ ++ i = msblk->next_fragment; ++ for (n = 0; n < SQUASHFS_CACHED_FRAGMENTS; n++) { ++ if (msblk->fragment[i].locked == 0) ++ break; ++ i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS; ++ } ++ ++ msblk->next_fragment = (msblk->next_fragment + 1) % ++ SQUASHFS_CACHED_FRAGMENTS; ++ ++ if (msblk->fragment[i].data == NULL) { ++ msblk->fragment[i].data = vmalloc(sblk->block_size); ++ if (msblk->fragment[i].data == NULL) { ++ ERROR("Failed to allocate fragment cache block\n"); ++ mutex_unlock(&msblk->fragment_mutex); ++ goto out; ++ } ++ } ++ ++ msblk->unused_frag_blks --; ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].locked = 1; ++ mutex_unlock(&msblk->fragment_mutex); ++ ++ msblk->fragment[i].length = squashfs_read_data(s, ++ msblk->fragment[i].data, start_block, length, NULL, ++ sblk->block_size); ++ ++ if (msblk->fragment[i].length == 0) { ++ ERROR("Unable to read fragment cache block [%llx]\n", start_block); ++ msblk->fragment[i].locked = 0; ++ msblk->unused_frag_blks ++; ++ smp_mb(); ++ wake_up(&msblk->fragment_wait_queue); ++ goto out; ++ } ++ ++ mutex_lock(&msblk->fragment_mutex); ++ msblk->fragment[i].block = start_block; ++ TRACE("New fragment %d, start block %lld, locked %d\n", ++ i, msblk->fragment[i].block, msblk->fragment[i].locked); ++ mutex_unlock(&msblk->fragment_mutex); ++ break; ++ } ++ ++ if (msblk->fragment[i].locked == 0) ++ msblk->unused_frag_blks --; ++ msblk->fragment[i].locked++; ++ mutex_unlock(&msblk->fragment_mutex); ++ TRACE("Got fragment %d, start block %lld, locked %d\n", i, ++ msblk->fragment[i].block, msblk->fragment[i].locked); ++ break; ++ } ++ ++ return &msblk->fragment[i]; ++ ++out: ++ return NULL; ++} ++ ++ ++static void squashfs_new_inode(struct squashfs_sb_info *msblk, struct inode *i, ++ struct squashfs_base_inode_header *inodeb) ++{ ++ i->i_ino = inodeb->inode_number; ++ i->i_mtime.tv_sec = inodeb->mtime; ++ i->i_atime.tv_sec = inodeb->mtime; ++ i->i_ctime.tv_sec = inodeb->mtime; ++ i->i_uid = msblk->uid[inodeb->uid]; ++ i->i_mode = inodeb->mode; ++ i->i_size = 0; ++ ++ if (inodeb->guid == SQUASHFS_GUIDS) ++ i->i_gid = i->i_uid; ++ else ++ i->i_gid = msblk->guid[inodeb->guid]; ++} ++ ++ ++static squashfs_inode_t squashfs_inode_lookup(struct super_block *s, int ino) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ long long start = msblk->inode_lookup_table[SQUASHFS_LOOKUP_BLOCK(ino - 1)]; ++ int offset = SQUASHFS_LOOKUP_BLOCK_OFFSET(ino - 1); ++ squashfs_inode_t inode; ++ ++ TRACE("Entered squashfs_inode_lookup, inode_number = %d\n", ino); ++ ++ if (msblk->swap) { ++ squashfs_inode_t sinode; ++ ++ if (!squashfs_get_cached_block(s, &sinode, start, offset, ++ sizeof(sinode), &start, &offset)) ++ goto out; ++ SQUASHFS_SWAP_INODE_T((&inode), &sinode); ++ } else if (!squashfs_get_cached_block(s, &inode, start, offset, ++ sizeof(inode), &start, &offset)) ++ goto out; ++ ++ TRACE("squashfs_inode_lookup, inode = 0x%llx\n", inode); ++ ++ return inode; ++ ++out: ++ return SQUASHFS_INVALID_BLK; ++} ++ ++ ++static void vfs_read_inode(struct inode *i) ++{ ++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; ++ squashfs_inode_t inode = squashfs_inode_lookup(i->i_sb, i->i_ino); ++ ++ TRACE("Entered vfs_read_inode\n"); ++ ++ if(inode != SQUASHFS_INVALID_BLK) ++ (msblk->read_inode)(i, inode); ++} ++ ++ ++static struct dentry *squashfs_get_parent(struct dentry *child) ++{ ++ struct inode *i = child->d_inode; ++ struct inode *parent = iget(i->i_sb, SQUASHFS_I(i)->u.s2.parent_inode); ++ struct dentry *rv; ++ ++ TRACE("Entered squashfs_get_parent\n"); ++ ++ if(parent == NULL) { ++ rv = ERR_PTR(-EACCES); ++ goto out; ++ } ++ ++ rv = d_alloc_anon(parent); ++ if(rv == NULL) ++ rv = ERR_PTR(-ENOMEM); ++ ++out: ++ return rv; ++} ++ ++ ++SQSH_EXTERN struct inode *squashfs_iget(struct super_block *s, ++ squashfs_inode_t inode, unsigned int inode_number) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct inode *i = iget_locked(s, inode_number); ++ ++ TRACE("Entered squashfs_iget\n"); ++ ++ if(i && (i->i_state & I_NEW)) { ++ (msblk->read_inode)(i, inode); ++ unlock_new_inode(i); ++ } ++ ++ return i; ++} ++ ++ ++static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode) ++{ ++ struct super_block *s = i->i_sb; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long block = SQUASHFS_INODE_BLK(inode) + sblk->inode_table_start; ++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); ++ long long next_block; ++ unsigned int next_offset; ++ union squashfs_inode_header id, sid; ++ struct squashfs_base_inode_header *inodeb = &id.base, *sinodeb = &sid.base; ++ ++ TRACE("Entered squashfs_read_inode\n"); ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodeb, block, offset, ++ sizeof(*sinodeb), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_BASE_INODE_HEADER(inodeb, sinodeb, sizeof(*sinodeb)); ++ } else ++ if (!squashfs_get_cached_block(s, inodeb, block, offset, ++ sizeof(*inodeb), &next_block, &next_offset)) ++ goto failed_read; ++ ++ squashfs_new_inode(msblk, i, inodeb); ++ ++ switch(inodeb->inode_type) { ++ case SQUASHFS_FILE_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_reg_inode_header *inodep = &id.reg; ++ struct squashfs_reg_inode_header *sinodep = &sid.reg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG) ++ if(!get_fragment_location(s, inodep->fragment, &frag_blk, ++ &frag_size)) ++ goto failed_read; ++ ++ i->i_nlink = 1; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ i->i_data.a_ops = &squashfs_aops; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_LREG_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_lreg_inode_header *inodep = &id.lreg; ++ struct squashfs_lreg_inode_header *sinodep = &sid.lreg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG) ++ if (!get_fragment_location(s, inodep->fragment, &frag_blk, ++ &frag_size)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ i->i_data.a_ops = &squashfs_aops; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_DIR_TYPE: { ++ struct squashfs_dir_inode_header *inodep = &id.dir; ++ struct squashfs_dir_inode_header *sinodep = &sid.dir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = 0; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Directory inode %x:%x, start_block %x, offset " ++ "%x\n", SQUASHFS_INODE_BLK(inode), ++ offset, inodep->start_block, ++ inodep->offset); ++ break; ++ } ++ case SQUASHFS_LDIR_TYPE: { ++ struct squashfs_ldir_inode_header *inodep = &id.ldir; ++ struct squashfs_ldir_inode_header *sinodep = &sid.ldir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; ++ SQUASHFS_I(i)->u.s2.directory_index_offset = next_offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = inodep->i_count; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Long directory inode %x:%x, start_block %x, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, inodep->offset); ++ break; ++ } ++ case SQUASHFS_SYMLINK_TYPE: { ++ struct squashfs_symlink_inode_header *inodep = &id.symlink; ++ struct squashfs_symlink_inode_header *sinodep = &sid.symlink; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->symlink_size; ++ i->i_op = &page_symlink_inode_operations; ++ i->i_data.a_ops = &squashfs_symlink_aops; ++ i->i_mode |= S_IFLNK; ++ SQUASHFS_I(i)->start_block = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ ++ TRACE("Symbolic link inode %x:%x, start_block %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ next_block, next_offset); ++ break; ++ } ++ case SQUASHFS_BLKDEV_TYPE: ++ case SQUASHFS_CHRDEV_TYPE: { ++ struct squashfs_dev_inode_header *inodep = &id.dev; ++ struct squashfs_dev_inode_header *sinodep = &sid.dev; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == SQUASHFS_CHRDEV_TYPE) ? ++ S_IFCHR : S_IFBLK; ++ init_special_inode(i, i->i_mode, old_decode_dev(inodep->rdev)); ++ ++ TRACE("Device inode %x:%x, rdev %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, inodep->rdev); ++ break; ++ } ++ case SQUASHFS_FIFO_TYPE: ++ case SQUASHFS_SOCKET_TYPE: { ++ struct squashfs_ipc_inode_header *inodep = &id.ipc; ++ struct squashfs_ipc_inode_header *sinodep = &sid.ipc; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, sinodep, block, offset, ++ sizeof(*sinodep), &next_block, &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, inodep, block, offset, ++ sizeof(*inodep), &next_block, &next_offset)) ++ goto failed_read; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) ++ ? S_IFIFO : S_IFSOCK; ++ init_special_inode(i, i->i_mode, 0); ++ break; ++ } ++ default: ++ ERROR("Unknown inode type %d in squashfs_iget!\n", ++ inodeb->inode_type); ++ goto failed_read1; ++ } ++ ++ return 1; ++ ++failed_read: ++ ERROR("Unable to read inode [%llx:%x]\n", block, offset); ++ ++failed_read1: ++ make_bad_inode(i); ++ return 0; ++} ++ ++ ++static int read_inode_lookup_table(struct super_block *s) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ unsigned int length = SQ |