The patch titled
Subject: crypto: change LZ4 modules to work with new LZ4 module version
has been added to the -mm tree. Its filename is
crypto-change-lz4-modules-to-work-with-new-lz4-module-version.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/crypto-change-lz4-modules-to-work-with-new-lz4-module-version.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/crypto-change-lz4-modules-to-work-with-new-lz4-module-version.patch
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------------------------------------------------------
From: Sven Schmidt <4sschmid@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: crypto: change LZ4 modules to work with new LZ4 module version
This patch updates the crypto modules using LZ4 compression to work with
the new LZ4 module version.
Link: http://lkml.kernel.org/r/1485113717-29261-4-git-send-email-4sschmid@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Sven Schmidt <4sschmid@xxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: Bongkyu Kim <bongkyu.kim@xxxxxxx>
Cc: Rui Salvaterra <rsalvaterra@xxxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Anton Vorontsov <anton@xxxxxxxxxx>
Cc: Colin Cross <ccross@xxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
crypto/lz4.c | 21 ++++++++-------------
crypto/lz4hc.c | 21 ++++++++-------------
2 files changed, 16 insertions(+), 26 deletions(-)
diff -puN crypto/lz4.c~crypto-change-lz4-modules-to-work-with-new-lz4-module-version crypto/lz4.c
--- a/crypto/lz4.c~crypto-change-lz4-modules-to-work-with-new-lz4-module-version
+++ a/crypto/lz4.c
@@ -66,15 +66,13 @@ static void lz4_exit(struct crypto_tfm *
static int __lz4_compress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
- size_t tmp_len = *dlen;
- int err;
+ int out_len = LZ4_compress_default(src, dst,
+ slen, (int)((size_t)dlen), ctx);
- err = lz4_compress(src, slen, dst, &tmp_len, ctx);
-
- if (err < 0)
+ if (!out_len)
return -EINVAL;
- *dlen = tmp_len;
+ *dlen = out_len;
return 0;
}
@@ -96,16 +94,13 @@ static int lz4_compress_crypto(struct cr
static int __lz4_decompress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
- int err;
- size_t tmp_len = *dlen;
- size_t __slen = slen;
+ int out_len = LZ4_decompress_safe(src, dst, slen, (int)((size_t)dlen));
- err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len);
- if (err < 0)
+ if (out_len < 0)
return -EINVAL;
- *dlen = tmp_len;
- return err;
+ *dlen = out_len;
+ return out_len;
}
static int lz4_sdecompress(struct crypto_scomp *tfm, const u8 *src,
diff -puN crypto/lz4hc.c~crypto-change-lz4-modules-to-work-with-new-lz4-module-version crypto/lz4hc.c
--- a/crypto/lz4hc.c~crypto-change-lz4-modules-to-work-with-new-lz4-module-version
+++ a/crypto/lz4hc.c
@@ -65,15 +65,13 @@ static void lz4hc_exit(struct crypto_tfm
static int __lz4hc_compress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
- size_t tmp_len = *dlen;
- int err;
+ int out_len = LZ4_compress_HC(src, dst, slen,
+ (int)((size_t)dlen), LZ4HC_DEFAULT_CLEVEL, ctx);
- err = lz4hc_compress(src, slen, dst, &tmp_len, ctx);
-
- if (err < 0)
+ if (out_len == 0)
return -EINVAL;
- *dlen = tmp_len;
+ *dlen = out_len;
return 0;
}
@@ -97,16 +95,13 @@ static int lz4hc_compress_crypto(struct
static int __lz4hc_decompress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
- int err;
- size_t tmp_len = *dlen;
- size_t __slen = slen;
+ int out_len = LZ4_decompress_safe(src, dst, slen, (int)((size_t)dlen));
- err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len);
- if (err < 0)
+ if (out_len < 0)
return -EINVAL;
- *dlen = tmp_len;
- return err;
+ *dlen = out_len;
+ return out_len;
}
static int lz4hc_sdecompress(struct crypto_scomp *tfm, const u8 *src,
_
Patches currently in -mm which might be from 4sschmid@xxxxxxxxxxxxxxxxxxxxxxxxx are
lib-update-lz4-compressor-module.patch
lib-decompress_unlz4-change-module-to-work-with-new-lz4-module-version.patch
crypto-change-lz4-modules-to-work-with-new-lz4-module-version.patch
fs-pstore-fs-squashfs-change-usage-of-lz4-to-work-with-new-lz4-version.patch
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