1 files changed, 125 insertions, 0 deletions
diff --git a/tools/testing/selftests/futex/functional/futex_wait_private_mapped_file.c b/tools/testing/selftests/futex/functional/futex_wait_private_mapped_file.c
new file mode 100644
index 000000000000..5f687f247454
--- /dev/null
+++ b/tools/testing/selftests/futex/functional/futex_wait_private_mapped_file.c
@@ -0,0 +1,125 @@
+/******************************************************************************
+ *
+ * Copyright FUJITSU LIMITED 2010
+ * Copyright KOSAKI Motohiro <kosaki.motohiro@jp.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.
+ *
+ * DESCRIPTION
+ *      Internally, Futex has two handling mode, anon and file. The private file
+ *      mapping is special. At first it behave as file, but after write anything
+ *      it behave as anon. This test is intent to test such case.
+ *
+ * AUTHOR
+ *      KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
+ *
+ * HISTORY
+ *      2010-Jan-6: Initial version by KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
+ *
+ *****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <syscall.h>
+#include <unistd.h>
+#include <errno.h>
+#include <linux/futex.h>
+#include <pthread.h>
+#include <libgen.h>
+#include <signal.h>
+
+#include "logging.h"
+#include "futextest.h"
+
+#define PAGE_SZ 4096
+
+char pad[PAGE_SZ] = {1};
+futex_t val = 1;
+char pad2[PAGE_SZ] = {1};
+
+#define WAKE_WAIT_US 3000000
+struct timespec wait_timeout = { .tv_sec = 5, .tv_nsec = 0};
+
+void usage(char *prog)
+{
+	printf("Usage: %s\n", prog);
+	printf("  -c	Use color\n");
+	printf("  -h	Display this help message\n");
+	printf("  -v L	Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
+	       VQUIET, VCRITICAL, VINFO);
+}
+
+void *thr_futex_wait(void *arg)
+{
+	int ret;
+
+	info("futex wait\n");
+	ret = futex_wait(&val, 1, &wait_timeout, 0);
+	if (ret && errno != EWOULDBLOCK && errno != ETIMEDOUT) {
+		error("futex error.\n", errno);
+		print_result(RET_ERROR);
+		exit(RET_ERROR);
+	}
+
+	if (ret && errno == ETIMEDOUT)
+		fail("waiter timedout\n");
+
+	info("futex_wait: ret = %d, errno = %d\n", ret, errno);
+
+	return NULL;
+}
+
+int main(int argc, char **argv)
+{
+	pthread_t thr;
+	int ret = RET_PASS;
+	int res;
+	int c;
+
+	while ((c = getopt(argc, argv, "chv:")) != -1) {
+		switch (c) {
+		case 'c':
+			log_color(1);
+			break;
+		case 'h':
+			usage(basename(argv[0]));
+			exit(0);
+		case 'v':
+			log_verbosity(atoi(optarg));
+			break;
+		default:
+			usage(basename(argv[0]));
+			exit(1);
+		}
+	}
+
+	printf("%s: Test the futex value of private file mappings in FUTEX_WAIT\n",
+	       basename(argv[0]));
+
+	ret = pthread_create(&thr, NULL, thr_futex_wait, NULL);
+	if (ret < 0) {
+		fprintf(stderr, "pthread_create error\n");
+		ret = RET_ERROR;
+		goto out;
+	}
+
+	info("wait a while\n");
+	usleep(WAKE_WAIT_US);
+	val = 2;
+	res = futex_wake(&val, 1, 0);
+	info("futex_wake %d\n", res);
+	if (res != 1) {
+		fail("FUTEX_WAKE didn't find the waiting thread.\n");
+		ret = RET_FAIL;
+	}
+
+	info("join\n");
+	pthread_join(thr, NULL);
+
+ out:
+	print_result(ret);
+	return ret;
+}