[LTP] [PATCH] mmap/mmap14.c: new case to test MAP_LOCKED of mmap

[DAN LI <li.dan@cn.fujitsu.com>]

Create test case for MAP_LOCKED of mmap.

Verify pages are locked by checking section "VmLck" of /proc/<pid>/status.


Signed-off-by: DAN LI <li.dan@cn.fujitsu.com>
---
 runtest/syscalls                        |   1 +
 testcases/kernel/syscalls/mmap/mmap14.c | 133 ++++++++++++++++++++++++++++++++
 2 files changed, 134 insertions(+)
 create mode 100644 testcases/kernel/syscalls/mmap/mmap14.c

diff --git a/runtest/syscalls b/runtest/syscalls
index eba0200..4865375 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -562,6 +562,7 @@ mmap07 mmap07
 mmap08 mmap08
 mmap09 mmap09
 mmap13 mmap13
+mmap14 mmap14
 # test is broken, mask it for now.
 #mmap11 mmap11 -i 30000

diff --git a/testcases/kernel/syscalls/mmap/mmap14.c b/testcases/kernel/syscalls/mmap/mmap14.c
new file mode 100644
index 0000000..d279df0
--- /dev/null
+++ b/testcases/kernel/syscalls/mmap/mmap14.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2013 FNST, DAN LI <li.dan@cn.fujitsu.com>
+ *
+ * This program is free software;  you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program;  if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * Test Description:
+ *  Verify MAP_LOCKED works fine.
+ *  "Lock the pages of the mapped region into memory in the manner of mlock(2)."
+ *
+ * Expected Result:
+ *  mmap() should succeed returning the address of the mapped region,
+ *  and this region should be locked into memory.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <signal.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/shm.h>
+
+#include "test.h"
+#include "usctest.h"
+
+#define TEMPFILE        "mmapfile"
+#define MMAPSIZE        (1UL<<20)
+#define LINELEN         256
+
+char *TCID = "mmap14";
+int TST_TOTAL = 1;
+
+static char *addr;
+
+static void setup(void);
+static void cleanup(void);
+
+int main(int argc, char *argv[])
+{
+	int lc;
+	int ret;
+	int lock_sz;
+	char *msg;
+	char line[LINELEN];
+	FILE *fstatus = NULL;
+
+	msg = parse_opts(argc, argv, NULL, NULL);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	setup();
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+
+		tst_count = 0;
+
+		addr = mmap(NULL, MMAPSIZE, PROT_READ | PROT_WRITE,
+			    MAP_FILE | MAP_PRIVATE | MAP_LOCKED | MAP_ANONYMOUS,
+			    -1, 0);
+
+		if (addr == MAP_FAILED) {
+			tst_resm(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE);
+			continue;
+		}
+
+		if (STD_FUNCTIONAL_TEST) {
+
+			fstatus = fopen("/proc/self/status", "r");
+			if (fstatus == NULL)
+				tst_brkm(TFAIL | TERRNO, NULL, "Open dev "
+							       "status failed");
+
+			while (fgets(line, LINELEN, fstatus) != NULL)
+				if (strstr(line, "VmLck") != NULL)
+					break;
+
+			ret = sscanf(line, "%*[^0-9]%d%*[^0-9]", &lock_sz);
+			if (ret != 1)
+				tst_brkm(TFAIL | TERRNO, NULL, "Get lock "
+							       "size failed");
+
+			if (lock_sz == MMAPSIZE / 1024)
+				tst_resm(TPASS, "Functionality of mmap() "
+						"successful");
+			else
+				tst_resm(TFAIL, "Pages are not locked");
+
+		} else {
+			tst_resm(TPASS, "call succeeded");
+		}
+
+		fclose(fstatus);
+		if (munmap(addr, MMAPSIZE) != 0)
+			tst_brkm(TFAIL | TERRNO, NULL, "munmap failed");
+	}
+
+	cleanup();
+	tst_exit();
+
+}
+
+static void setup(void)
+{
+	tst_sig(FORK, DEF_HANDLER, cleanup);
+
+	TEST_PAUSE;
+
+	tst_tmpdir();
+}
+
+static void cleanup(void)
+{
+	TEST_CLEANUP;
+	tst_rmdir();
+}
-- 
1.8.1

------------------------------------------------------------------------------
This SF.net email is sponsored by Windows:

Build for Windows Store.

http://p.sf.net/sfu/windows-dev2dev
_______________________________________________
Ltp-list mailing list
Ltp-list@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ltp-list