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authorSven Schmidt <4sschmid@informatik.uni-hamburg.de>2017-02-24 15:01:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-24 17:46:57 -0800
commitd21b5ff12df45a65bb220c7e8103a5f0f5609377 (patch)
tree965462c0aa0797c11e5411313d0dc48db91e5b79 /fs
parent73a15ac6d5413caaee95979e318df58d4ee6d9a3 (diff)
downloadlinux-d21b5ff12df45a65bb220c7e8103a5f0f5609377.tar.bz2
fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version
Update fs/pstore and fs/squashfs to use the updated functions from the new LZ4 module. Link: http://lkml.kernel.org/r/1486321748-19085-5-git-send-email-4sschmid@informatik.uni-hamburg.de Signed-off-by: Sven Schmidt <4sschmid@informatik.uni-hamburg.de> Cc: Bongkyu Kim <bongkyu.kim@lge.com> Cc: Rui Salvaterra <rsalvaterra@gmail.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David S. Miller <davem@davemloft.net> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Colin Cross <ccross@android.com> Cc: Kees Cook <keescook@chromium.org> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/pstore/platform.c22
-rw-r--r--fs/squashfs/lz4_wrapper.c12
2 files changed, 19 insertions, 15 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 729677e18e36..efab7b64925b 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -342,31 +342,35 @@ static int compress_lz4(const void *in, void *out, size_t inlen, size_t outlen)
{
int ret;
- ret = lz4_compress(in, inlen, out, &outlen, workspace);
- if (ret) {
- pr_err("lz4_compress error, ret = %d!\n", ret);
+ ret = LZ4_compress_default(in, out, inlen, outlen, workspace);
+ if (!ret) {
+ pr_err("LZ4_compress_default error; compression failed!\n");
return -EIO;
}
- return outlen;
+ return ret;
}
static int decompress_lz4(void *in, void *out, size_t inlen, size_t outlen)
{
int ret;
- ret = lz4_decompress_unknownoutputsize(in, inlen, out, &outlen);
- if (ret) {
- pr_err("lz4_decompress error, ret = %d!\n", ret);
+ ret = LZ4_decompress_safe(in, out, inlen, outlen);
+ if (ret < 0) {
+ /*
+ * LZ4_decompress_safe will return an error code
+ * (< 0) if decompression failed
+ */
+ pr_err("LZ4_decompress_safe error, ret = %d!\n", ret);
return -EIO;
}
- return outlen;
+ return ret;
}
static void allocate_lz4(void)
{
- big_oops_buf_sz = lz4_compressbound(psinfo->bufsize);
+ big_oops_buf_sz = LZ4_compressBound(psinfo->bufsize);
big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL);
if (big_oops_buf) {
workspace = kmalloc(LZ4_MEM_COMPRESS, GFP_KERNEL);
diff --git a/fs/squashfs/lz4_wrapper.c b/fs/squashfs/lz4_wrapper.c
index ff4468bd18b0..95da65366548 100644
--- a/fs/squashfs/lz4_wrapper.c
+++ b/fs/squashfs/lz4_wrapper.c
@@ -97,7 +97,6 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
struct squashfs_lz4 *stream = strm;
void *buff = stream->input, *data;
int avail, i, bytes = length, res;
- size_t dest_len = output->length;
for (i = 0; i < b; i++) {
avail = min(bytes, msblk->devblksize - offset);
@@ -108,12 +107,13 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
put_bh(bh[i]);
}
- res = lz4_decompress_unknownoutputsize(stream->input, length,
- stream->output, &dest_len);
- if (res)
+ res = LZ4_decompress_safe(stream->input, stream->output,
+ length, output->length);
+
+ if (res < 0)
return -EIO;
- bytes = dest_len;
+ bytes = res;
data = squashfs_first_page(output);
buff = stream->output;
while (data) {
@@ -128,7 +128,7 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
}
squashfs_finish_page(output);
- return dest_len;
+ return res;
}
const struct squashfs_decompressor squashfs_lz4_comp_ops = {