VTS: kselftest rtctest am: 7b7fc39a3b am: 9be42dbeca am: 22ad13f4c1 am: 243ec140aa
Original change: https://android-review.googlesource.com/c/platform/external/linux-kselftest/+/1416090
Change-Id: If8582263ec09e7330aa002c4dca93fd7f725820d
diff --git a/tools/testing/selftests/rtc/rtctest.c b/tools/testing/selftests/rtc/rtctest.c
index 92c4035..44cd1b6 100644
--- a/tools/testing/selftests/rtc/rtctest.c
+++ b/tools/testing/selftests/rtc/rtctest.c
@@ -5,11 +5,13 @@
* Copyright (c) 2018 Alexandre Belloni <alexandre.belloni@bootlin.com>
*/
+#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/rtc.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/types.h>
@@ -23,6 +25,25 @@
static char *rtc_file = "/dev/rtc0";
+/* Returns 1 if file matching /dev/rtc* is found, else 0. */
+static int has_rtc(void)
+{
+ DIR *dev_dir;
+ struct dirent *dir;
+
+ dev_dir = opendir("/dev");
+ if (!dev_dir)
+ return 0;
+ while ((dir = readdir(dev_dir))) {
+ if (!strncmp(dir->d_name, "rtc", 3)) {
+ closedir(dev_dir);
+ return 1;
+ }
+ }
+ closedir(dev_dir);
+ return 0;
+}
+
FIXTURE(rtc) {
int fd;
};
@@ -40,6 +61,9 @@
int rc;
struct rtc_time rtc_tm;
+ if (!has_rtc())
+ return;
+
/* Read the RTC time/date */
rc = ioctl(self->fd, RTC_RD_TIME, &rtc_tm);
ASSERT_NE(-1, rc);
