linux-kernel - [PATCH] block: simplify string handling in elv_iosched

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Message-ID: <48F43D68.40300@cn.fujitsu.com>
Date:	Tue, 14 Oct 2008 14:34:16 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] block: simplify string handling in elv_iosched_store()

strlcpy() guarantees the dest buffer is NULL teminated.

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 block/elevator.c |    9 ++-------
 1 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/block/elevator.c b/block/elevator.c
index 0451892..9482ffa 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -1166,15 +1166,10 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name,
 			  size_t count)
 {
 	char elevator_name[ELV_NAME_MAX];
-	size_t len;
 	struct elevator_type *e;
 
-	elevator_name[sizeof(elevator_name) - 1] = '\0';
-	strncpy(elevator_name, name, sizeof(elevator_name) - 1);
-	len = strlen(elevator_name);
-
-	if (len && elevator_name[len - 1] == '\n')
-		elevator_name[len - 1] = '\0';
+	strlcpy(elevator_name, name, sizeof(elevator_name));
+	strstrip(elevator_name);
 
 	e = elevator_get(elevator_name);
 	if (!e) {
-- 
1.5.4.rc3

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