X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=blobdiff_plain;f=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.32%2F001-squashfs_move_zlib_decomp.patch;fp=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.32%2F001-squashfs_move_zlib_decomp.patch;h=0000000000000000000000000000000000000000;hp=94096791f12131af4a5c000e9412228cb72e3c1d;hb=da1bb88a2b900f0392b731ec47c5e1bff956fd8f;hpb=6117c04c9416b295347fb45c37e430f01df1d0d9 diff --git a/target/linux/generic-2.6/patches-2.6.32/001-squashfs_move_zlib_decomp.patch b/target/linux/generic-2.6/patches-2.6.32/001-squashfs_move_zlib_decomp.patch deleted file mode 100644 index 94096791f1..0000000000 --- a/target/linux/generic-2.6/patches-2.6.32/001-squashfs_move_zlib_decomp.patch +++ /dev/null @@ -1,244 +0,0 @@ -From 6c4419d997d4431bb62e73475cd6b084e83efbd1 Mon Sep 17 00:00:00 2001 -From: Phillip Lougher -Date: Tue, 22 Sep 2009 19:25:24 +0100 -Subject: [PATCH] Squashfs: move zlib decompression wrapper code into a separate file - -Signed-off-by: Phillip Lougher ---- - fs/squashfs/Makefile | 2 +- - fs/squashfs/block.c | 74 ++---------------------------- - fs/squashfs/squashfs.h | 4 ++ - fs/squashfs/zlib_wrapper.c | 109 ++++++++++++++++++++++++++++++++++++++++++++ - 4 files changed, 118 insertions(+), 71 deletions(-) - create mode 100644 fs/squashfs/zlib_wrapper.c - ---- a/fs/squashfs/Makefile -+++ b/fs/squashfs/Makefile -@@ -4,4 +4,4 @@ - - obj-$(CONFIG_SQUASHFS) += squashfs.o - squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o --squashfs-y += namei.o super.o symlink.o -+squashfs-y += namei.o super.o symlink.o zlib_wrapper.o ---- a/fs/squashfs/block.c -+++ b/fs/squashfs/block.c -@@ -29,7 +29,6 @@ - #include - #include - #include --#include - #include - #include - #include -@@ -153,72 +152,10 @@ int squashfs_read_data(struct super_bloc - } - - if (compressed) { -- int zlib_err = 0, zlib_init = 0; -- -- /* -- * Uncompress block. -- */ -- -- mutex_lock(&msblk->read_data_mutex); -- -- msblk->stream.avail_out = 0; -- msblk->stream.avail_in = 0; -- -- bytes = length; -- do { -- if (msblk->stream.avail_in == 0 && k < b) { -- avail = min(bytes, msblk->devblksize - offset); -- bytes -= avail; -- wait_on_buffer(bh[k]); -- if (!buffer_uptodate(bh[k])) -- goto release_mutex; -- -- if (avail == 0) { -- offset = 0; -- put_bh(bh[k++]); -- continue; -- } -- -- msblk->stream.next_in = bh[k]->b_data + offset; -- msblk->stream.avail_in = avail; -- offset = 0; -- } -- -- if (msblk->stream.avail_out == 0 && page < pages) { -- msblk->stream.next_out = buffer[page++]; -- msblk->stream.avail_out = PAGE_CACHE_SIZE; -- } -- -- if (!zlib_init) { -- 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; -- } -- zlib_init = 1; -- } -- -- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); -- -- if (msblk->stream.avail_in == 0 && k < b) -- put_bh(bh[k++]); -- } while (zlib_err == Z_OK); -- -- if (zlib_err != Z_STREAM_END) { -- ERROR("zlib_inflate error, data probably corrupt\n"); -- goto release_mutex; -- } -- -- zlib_err = zlib_inflateEnd(&msblk->stream); -- if (zlib_err != Z_OK) { -- ERROR("zlib_inflate error, data probably corrupt\n"); -- goto release_mutex; -- } -- length = msblk->stream.total_out; -- mutex_unlock(&msblk->read_data_mutex); -+ length = zlib_uncompress(msblk, buffer, bh, b, offset, length, -+ srclength, pages); -+ if (length < 0) -+ goto read_failure; - } else { - /* - * Block is uncompressed. -@@ -255,9 +192,6 @@ int squashfs_read_data(struct super_bloc - kfree(bh); - return length; - --release_mutex: -- mutex_unlock(&msblk->read_data_mutex); -- - block_release: - for (; k < b; k++) - put_bh(bh[k]); ---- a/fs/squashfs/squashfs.h -+++ b/fs/squashfs/squashfs.h -@@ -70,6 +70,10 @@ extern struct inode *squashfs_iget(struc - unsigned int); - extern int squashfs_read_inode(struct inode *, long long); - -+/* zlib_wrapper.c */ -+extern int zlib_uncompress(struct squashfs_sb_info *, void **, -+ struct buffer_head **, int, int, int, int, int); -+ - /* - * Inodes and files operations - */ ---- /dev/null -+++ b/fs/squashfs/zlib_wrapper.c -@@ -0,0 +1,109 @@ -+/* -+ * Squashfs - a compressed read only filesystem for Linux -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 -+ * 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -+ * -+ * zlib_wrapper.c -+ */ -+ -+ -+#include -+#include -+#include -+ -+#include "squashfs_fs.h" -+#include "squashfs_fs_sb.h" -+#include "squashfs_fs_i.h" -+#include "squashfs.h" -+ -+int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, -+ struct buffer_head **bh, int b, int offset, int length, int srclength, -+ int pages) -+{ -+ int zlib_err = 0, zlib_init = 0; -+ int avail, bytes, k = 0, page = 0; -+ -+ mutex_lock(&msblk->read_data_mutex); -+ -+ msblk->stream.avail_out = 0; -+ msblk->stream.avail_in = 0; -+ -+ bytes = length; -+ do { -+ if (msblk->stream.avail_in == 0 && k < b) { -+ avail = min(bytes, msblk->devblksize - offset); -+ bytes -= avail; -+ wait_on_buffer(bh[k]); -+ if (!buffer_uptodate(bh[k])) -+ goto release_mutex; -+ -+ if (avail == 0) { -+ offset = 0; -+ put_bh(bh[k++]); -+ continue; -+ } -+ -+ msblk->stream.next_in = bh[k]->b_data + offset; -+ msblk->stream.avail_in = avail; -+ offset = 0; -+ } -+ -+ if (msblk->stream.avail_out == 0 && page < pages) { -+ msblk->stream.next_out = buffer[page++]; -+ msblk->stream.avail_out = PAGE_CACHE_SIZE; -+ } -+ -+ if (!zlib_init) { -+ 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; -+ } -+ zlib_init = 1; -+ } -+ -+ zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); -+ -+ if (msblk->stream.avail_in == 0 && k < b) -+ put_bh(bh[k++]); -+ } while (zlib_err == Z_OK); -+ -+ if (zlib_err != Z_STREAM_END) { -+ ERROR("zlib_inflate error, data probably corrupt\n"); -+ goto release_mutex; -+ } -+ -+ zlib_err = zlib_inflateEnd(&msblk->stream); -+ if (zlib_err != Z_OK) { -+ ERROR("zlib_inflate error, data probably corrupt\n"); -+ goto release_mutex; -+ } -+ -+ mutex_unlock(&msblk->read_data_mutex); -+ return msblk->stream.total_out; -+ -+release_mutex: -+ mutex_unlock(&msblk->read_data_mutex); -+ -+ for (; k < b; k++) -+ put_bh(bh[k]); -+ -+ return -EIO; -+}