rename target/linux/generic-2.6 to generic

[openwrt/openwrt.git] / target / linux / generic / patches-2.6.30 / 004-squashfs_add_decompressor_lzma_lzo.patch

diff --git a/target/linux/generic/patches-2.6.30/004-squashfs_add_decompressor_lzma_lzo.patch b/target/linux/generic/patches-2.6.30/004-squashfs_add_decompressor_lzma_lzo.patch
new file mode 100644 (file)
index 0000000..a378c00
--- /dev/null
+++ b/target/linux/generic/patches-2.6.30/004-squashfs_add_decompressor_lzma_lzo.patch
@@ -0,0 +1,54 @@
+From 1885ca0a1973944684f252094a703b7c80dfc974 Mon Sep 17 00:00:00 2001
+From: Phillip Lougher <phillip@lougher.demon.co.uk>
+Date: Wed, 14 Oct 2009 03:58:11 +0100
+Subject: [PATCH] Squashfs: add decompressor entries for lzma and lzo
+
+Add knowledge of lzma/lzo compression formats to the decompressor
+framework.  For now these are added as unsupported.  Without
+these entries lzma/lzo compressed filesystems will be flagged as
+having unknown compression which is undesirable.
+
+Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
+---
+ fs/squashfs/decompressor.c |   10 ++++++++++
+ fs/squashfs/squashfs_fs.h  |    4 +++-
+ 2 files changed, 13 insertions(+), 1 deletions(-)
+
+--- a/fs/squashfs/decompressor.c
++++ b/fs/squashfs/decompressor.c
+@@ -36,12 +36,22 @@
+  * Squashfs, allowing multiple decompressors to be easily supported
+  */
+ 
++static const struct squashfs_decompressor squashfs_lzma_unsupported_comp_ops = {
++      NULL, NULL, NULL, LZMA_COMPRESSION, "lzma", 0
++};
++
++static const struct squashfs_decompressor squashfs_lzo_unsupported_comp_ops = {
++      NULL, NULL, NULL, LZO_COMPRESSION, "lzo", 0
++};
++
+ static const struct squashfs_decompressor squashfs_unknown_comp_ops = {
+       NULL, NULL, NULL, 0, "unknown", 0
+ };
+ 
+ static const struct squashfs_decompressor *decompressor[] = {
+       &squashfs_zlib_comp_ops,
++      &squashfs_lzma_unsupported_comp_ops,
++      &squashfs_lzo_unsupported_comp_ops,
+       &squashfs_unknown_comp_ops
+ };
+ 
+--- a/fs/squashfs/squashfs_fs.h
++++ b/fs/squashfs/squashfs_fs.h
+@@ -211,7 +211,9 @@ struct meta_index {
+ /*
+  * definitions for structures on disk
+  */
+-#define ZLIB_COMPRESSION       1
++#define ZLIB_COMPRESSION      1
++#define LZMA_COMPRESSION      2
++#define LZO_COMPRESSION               3
+ 
+ struct squashfs_super_block {
+       __le32                  s_magic;