linux-kernel - [PATCH v3 2/9] crypto/lzo: support decompress

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1442553564-3476-3-git-send-email-iamjoonsoo.kim@lge.com>
Date:	Fri, 18 Sep 2015 14:19:17 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Stephan Mueller <smueller@...onox.de>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v3 2/9] crypto/lzo: support decompress_noctx

lzo's decompression doesn't requires any scratch buffer so
it doesn't need tfm context. Hence, it can support
crypto compression noctx API and this patch implements it.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
---
 crypto/lzo.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/crypto/lzo.c b/crypto/lzo.c
index ec0f7b3..3cc0ce7 100644
--- a/crypto/lzo.c
+++ b/crypto/lzo.c
@@ -80,6 +80,12 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
 
 }
 
+static int lzo_decompress_noctx(const u8 *src, unsigned int slen,
+				u8 *dst, unsigned int *dlen)
+{
+	return lzo_decompress(NULL, src, slen, dst, dlen);
+}
+
 static struct crypto_alg alg = {
 	.cra_name		= "lzo",
 	.cra_flags		= CRYPTO_ALG_TYPE_COMPRESS,
@@ -90,7 +96,7 @@ static struct crypto_alg alg = {
 	.cra_u			= { .compress = {
 	.coa_compress 		= lzo_compress,
 	.coa_decompress		= lzo_decompress,
-	.coa_decompress_noctx	= NULL } }
+	.coa_decompress_noctx	= lzo_decompress_noctx } }
 };
 
 static int __init lzo_mod_init(void)
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/