linux-kernel - [PATCH 1/2] fs:ecryptfs basic code optimization

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Date:	Mon, 12 Nov 2012 14:17:27 +0530
From:	Abhijit Pawar <abhi.c.pawar@...il.com>
To:	Tyler Hicks <tyhicks@...onical.com>,
	Dustin Kirkland <dustin.kirkland@...zang.com>
Cc:	ecryptfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	Abhijit Pawar <abhi.c.pawar@...il.com>
Subject: [PATCH 1/2] fs:ecryptfs basic code optimization

debug.c: ecryptfs_dump_auth_tok () : salt and sig arrays initialized so as to avoid adding null terminator explicitly.

Signed-off-by: Abhijit Pawar <abhi.c.pawar@...il.com>
---
 fs/ecryptfs/debug.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/ecryptfs/debug.c b/fs/ecryptfs/debug.c
index 3d2bdf5..480e3b5 100644
--- a/fs/ecryptfs/debug.c
+++ b/fs/ecryptfs/debug.c
@@ -31,8 +31,8 @@
  */
 void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
 {
-	char salt[ECRYPTFS_SALT_SIZE * 2 + 1];
-	char sig[ECRYPTFS_SIG_SIZE_HEX + 1];
+	char salt[ECRYPTFS_SALT_SIZE * 2 + 1] = {'\0'};
+	char sig[ECRYPTFS_SIG_SIZE_HEX + 1] = {'\0'};
 
 	ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n",
 			auth_tok);
@@ -42,7 +42,6 @@ void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
 		ecryptfs_printk(KERN_DEBUG, " * passphrase type\n");
 		ecryptfs_to_hex(salt, auth_tok->token.password.salt,
 				ECRYPTFS_SALT_SIZE);
-		salt[ECRYPTFS_SALT_SIZE * 2] = '\0';
 		ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt);
 		if (auth_tok->token.password.flags &
 		    ECRYPTFS_PERSISTENT_PASSWORD) {
@@ -50,7 +49,6 @@ void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
 		}
 		memcpy(sig, auth_tok->token.password.signature,
 		       ECRYPTFS_SIG_SIZE_HEX);
-		sig[ECRYPTFS_SIG_SIZE_HEX] = '\0';
 		ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig);
 	}
 	ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n",
-- 
1.7.7.6

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