[PATCH 3.16 038/132] selftests/ipc: Fix msgque compiler warnings

[Ben Hutchings <ben@xxxxxxxxxxxxxxx>]

3.16.74-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Kees Cook <keescook@xxxxxxxxxxxx>

commit a147faa96f832f76e772b1e448e94ea84c774081 upstream.

This fixes the various compiler warnings when building the msgque
selftest. The primary change is using sys/msg.h instead of linux/msg.h
directly to gain the API declarations.

Fixes: 3a665531a3b7 ("selftests: IPC message queue copy feature test")
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 tools/testing/selftests/ipc/msgque.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/tools/testing/selftests/ipc/msgque.c
+++ b/tools/testing/selftests/ipc/msgque.c
@@ -1,8 +1,9 @@
+#define _GNU_SOURCE
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include <linux/msg.h>
+#include <sys/msg.h>
 #include <fcntl.h>
 
 #define MAX_MSG_SIZE		32
@@ -70,7 +71,7 @@ int restore_queue(struct msgque_data *ms
 	return 0;
 
 destroy:
-	if (msgctl(id, IPC_RMID, 0))
+	if (msgctl(id, IPC_RMID, NULL))
 		printf("Failed to destroy queue: %d\n", -errno);
 	return ret;
 }
@@ -117,7 +118,7 @@ int check_and_destroy_queue(struct msgqu
 
 	ret = 0;
 err:
-	if (msgctl(msgque->msq_id, IPC_RMID, 0)) {
+	if (msgctl(msgque->msq_id, IPC_RMID, NULL)) {
 		printf("Failed to destroy queue: %d\n", -errno);
 		return -errno;
 	}
@@ -126,7 +127,7 @@ err:
 
 int dump_queue(struct msgque_data *msgque)
 {
-	struct msqid64_ds ds;
+	struct msqid_ds ds;
 	int kern_id;
 	int i, ret;
 
@@ -243,7 +244,7 @@ int main(int argc, char **argv)
 	return 0;
 
 err_destroy:
-	if (msgctl(msgque.msq_id, IPC_RMID, 0)) {
+	if (msgctl(msgque.msq_id, IPC_RMID, NULL)) {
 		printf("Failed to destroy queue: %d\n", -errno);
 		return -errno;
 	}