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| author |   Phillip Lougher <phillip@lougher.demon.co.uk> | 2009-10-06 04:04:15 +0100 |
|---|---|---|
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | 2010-01-20 21:47:47 +0000 |
| commit | 4c0f0bb2351bee3de8dd7715ee199454a59f1230 (patch) | |
| tree | c552993587a8e87f7ebc0fe0955efdde94cc8884 /fs/squashfs/zlib_wrapper.c | |
| parent | Squashfs: factor out remaining zlib dependencies into separate wrapper file (diff) | |
| download | linux-dev-4c0f0bb2351bee3de8dd7715ee199454a59f1230.tar.xz linux-dev-4c0f0bb2351bee3de8dd7715ee199454a59f1230.zip | |
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 <phillip@lougher.demon.co.uk>
Diffstat (limited to 'fs/squashfs/zlib_wrapper.c')
| -rw-r--r-- | fs/squashfs/zlib_wrapper.c | 17 |
1 files changed, 14 insertions, 3 deletions
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 +}; + |