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>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c
index 0072ccdac1e2..157478da6ac9 100644
--- 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
 };