syscalls/ipc: Add shmctl07 test

A new test for SHM_LOCK and SHM_UNLOCK.

Signed-off-by: Cyril Hrubis <[email protected]>
Reviewed-by: Li Wang <[email protected]>

runtest/syscalls

@@ -1363,6 +1363,7 @@ shmctl03 shmctl03
 shmctl04 shmctl04
 shmctl05 shmctl05
 shmctl06 shmctl06
+shmctl07 shmctl07
 
 shmdt01 shmdt01
 shmdt02 shmdt02

runtest/syscalls-ipc

@@ -56,6 +56,7 @@ shmctl03 shmctl03
 shmctl04 shmctl04
 shmctl05 shmctl05
 shmctl06 shmctl06
+shmctl07 shmctl07
 
 shmdt01 shmdt01
 shmdt02 shmdt02

testcases/kernel/syscalls/ipc/shmctl/.gitignore

@@ -4,3 +4,4 @@
 /shmctl04
 /shmctl05
 /shmctl06
+/shmctl07

testcases/kernel/syscalls/ipc/shmctl/shmctl07.c

@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Cyril Hrubis <[email protected]>
+ */
+/*
+ * Test for a SHM_LOCK and SHM_UNLOCK.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include "tst_test.h"
+#include "tst_safe_sysv_ipc.h"
+#include "libnewipc.h"
+
+#define SHM_SIZE 2048
+
+static int shm_id = -1;
+
+static void verify_shmlock(void)
+{
+	struct shmid_ds ds;
+
+	TEST(shmctl(shm_id, SHM_LOCK, NULL));
+
+	if (TST_RET != 0)
+		tst_res(TFAIL | TTERRNO, "shmctl(%i, SHM_LOCK, NULL)", shm_id);
+	else
+		tst_res(TPASS, "shmctl(%i, SHM_LOCK, NULL)", shm_id);
+
+
+	SAFE_SHMCTL(shm_id, IPC_STAT, &ds);
+
+	if (ds.shm_perm.mode & SHM_LOCKED)
+		tst_res(TPASS, "SMH_LOCKED bit is on in shm_perm.mode");
+	else
+		tst_res(TFAIL, "SHM_LOCKED bit is off in shm_perm.mode");
+
+	TEST(shmctl(shm_id, SHM_UNLOCK, NULL));
+
+	if (TST_RET != 0)
+		tst_res(TFAIL | TTERRNO, "shmctl(%i, SHM_UNLOCK, NULL)", shm_id);
+	else
+		tst_res(TPASS, "shmctl(%i, SHM_UNLOCK, NULL)", shm_id);
+
+	SAFE_SHMCTL(shm_id, IPC_STAT, &ds);
+
+	if (ds.shm_perm.mode & SHM_LOCKED)
+		tst_res(TFAIL, "SMH_LOCKED bit is on in shm_perm.mode");
+	else
+		tst_res(TPASS, "SHM_LOCKED bit is off in shm_perm.mode");
+}
+
+static void setup(void)
+{
+	shm_id = SAFE_SHMGET(IPC_PRIVATE, SHM_SIZE, IPC_CREAT | SHM_RW);
+}
+
+static void cleanup(void)
+{
+	if (shm_id >= 0)
+		SAFE_SHMCTL(shm_id, IPC_RMID, NULL);
+}
+
+static struct tst_test test = {
+	.setup = setup,
+	.cleanup = cleanup,
+	.test_all = verify_shmlock,
+};