From 4c0f0bb2351bee3de8dd7715ee199454a59f1230 Mon Sep 17 00:00:00 2001 From: Phillip Lougher Date: Tue, 6 Oct 2009 04:04:15 +0100 Subject: Squashfs: add a decompressor framework This adds a decompressor framework which allows multiple compression algorithms to be cleanly supported. Also update zlib wrapper and other code to use the new framework. Signed-off-by: Phillip Lougher --- fs/squashfs/zlib_wrapper.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'fs/squashfs/zlib_wrapper.c') diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c index c814594d522e..4dd70e04333b 100644 --- a/fs/squashfs/zlib_wrapper.c +++ b/fs/squashfs/zlib_wrapper.c @@ -30,8 +30,9 @@ #include "squashfs_fs_sb.h" #include "squashfs_fs_i.h" #include "squashfs.h" +#include "decompressor.h" -void *squashfs_zlib_init() +static void *zlib_init(struct squashfs_sb_info *dummy) { z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL); if (stream == NULL) @@ -50,7 +51,7 @@ failed: } -void squashfs_zlib_free(void *strm) +static void zlib_free(void *strm) { z_stream *stream = strm; @@ -60,7 +61,7 @@ void squashfs_zlib_free(void *strm) } -int squashfs_zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, +static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, struct buffer_head **bh, int b, int offset, int length, int srclength, int pages) { @@ -137,3 +138,13 @@ release_mutex: return -EIO; } + +const struct squashfs_decompressor squashfs_zlib_comp_ops = { + .init = zlib_init, + .free = zlib_free, + .decompress = zlib_uncompress, + .id = ZLIB_COMPRESSION, + .name = "zlib", + .supported = 1 +}; + -- cgit v1.2.3