block: simplify string handling in elv_iosched_store()

strlcpy() guarantees the dest buffer is NULL teminated.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 2 insertions, 7 deletions

diff --git a/block/elevator.c b/block/elevator.c
index 04518921db31..9482ffa1aae6 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) {