mmap/mmap14.c: new case to test MAP_LOCKED of mmap
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>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Reviewed-by: Jan Stancek <jstancek@redhat.com>
diff --git a/runtest/syscalls b/runtest/syscalls
index 3ab19f5..beb8782 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -563,6 +563,7 @@
mmap09 mmap09
mmap12 mmap12
mmap13 mmap13
+mmap14 mmap14
# test is broken, mask it for now.
#mmap11 mmap11 -i 30000
diff --git a/testcases/kernel/syscalls/.gitignore b/testcases/kernel/syscalls/.gitignore
index fede145..18d03d4 100644
--- a/testcases/kernel/syscalls/.gitignore
+++ b/testcases/kernel/syscalls/.gitignore
@@ -515,6 +515,7 @@
/mmap/mmap11
/mmap/mmap12
/mmap/mmap13
+/mmap/mmap14
/modify_ldt/modify_ldt01
/modify_ldt/modify_ldt02
/mount/mount01
diff --git a/testcases/kernel/syscalls/mmap/mmap14.c b/testcases/kernel/syscalls/mmap/mmap14.c
new file mode 100644
index 0000000..05be708
--- /dev/null
+++ b/testcases/kernel/syscalls/mmap/mmap14.c
@@ -0,0 +1,135 @@
+/*
+ * 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 <sys/mman.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 getvmlck(unsigned int *lock_sz);
+static void setup(void);
+static void cleanup(void);
+
+int main(int argc, char *argv[])
+{
+ int lc;
+ char *msg;
+ unsigned int sz_before;
+ unsigned int sz_after;
+ unsigned int sz_ch;
+
+ 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;
+
+ getvmlck(&sz_before);
+
+ addr = mmap(NULL, MMAPSIZE, PROT_READ | PROT_WRITE,
+ 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) {
+
+ getvmlck(&sz_after);
+
+ sz_ch = sz_after - sz_before;
+ if (sz_ch == MMAPSIZE / 1024)
+ tst_resm(TPASS, "Functionality of mmap() "
+ "successful");
+ else
+ tst_resm(TFAIL, "Expected %luK locked, "
+ "get %uK locked",
+ MMAPSIZE / 1024, sz_ch);
+
+ } else {
+ tst_resm(TPASS, "call succeeded");
+ }
+
+ if (munmap(addr, MMAPSIZE) != 0)
+ tst_brkm(TFAIL | TERRNO, NULL, "munmap failed");
+ }
+
+ cleanup();
+ tst_exit();
+
+}
+
+void getvmlck(unsigned int *lock_sz)
+{
+ int ret;
+ char line[LINELEN];
+ FILE *fstatus = NULL;
+
+ 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");
+
+ fclose(fstatus);
+}
+
+static void setup(void)
+{
+ tst_require_root(NULL);
+
+ tst_sig(FORK, DEF_HANDLER, cleanup);
+
+ TEST_PAUSE;
+}
+
+static void cleanup(void)
+{
+ TEST_CLEANUP;
+}