autoconf check for utimensat(2)

If utimensat(2) is not defined on the platform we switch to using utimes(2).

Signed-off-by Stanislav Kholmanskikh <[email protected]>

---
 include/safe_file_ops.h |    1 +
 lib/safe_file_ops.c     |   53 +++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 52 insertions(+), 2 deletions(-)

include/safe_file_ops.h +1 -0

index 77ad594..1815984 100644
@@ -36,6 +36,7 @@
 
 #include <sys/stat.h>
 
+#include "lapi/utime.h"
 #include "test.h"
 
 /*

lib/safe_file_ops.c +9 -0

index 8cfd264..f9c316d 100644
@@ -21,11 +21,15 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "config.h"
 #include <stdarg.h>
 #include <stdio.h>
+#include <sys/time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
+#include <utime.h>
 
 #include "safe_file_ops.h"
 

@@ -69,6 +73,22 @@ static int count_scanf_conversions(const char *fmt)
 	return cnt;
 }
 
+static void set_time(struct timeval *res, struct timespec *src,
+			long cur_tv_sec, long cur_tv_usec)
+{
+	switch (src->tv_nsec) {
+	case UTIME_NOW:

lib/safe_file_ops.c +24 -0

 void safe_file_scanf(const char *file, const int lineno,
 		     void (*cleanup_fn) (void),
 		     const char *path, const char *fmt, ...)

@@ -186,10 +206,39 @@ void safe_touch(const char *file, const int lineno,
 				pathname, file, lineno);
 	}
 
+
+#if HAVE_UTIMENSAT
 	ret = utimensat(AT_FDCWD, pathname, times, 0);
+#else
+	if (times == NULL) {
+		ret = utimes(pathname, NULL);
+	} else {
+		struct stat sb;
+		struct timeval cotimes[2];
+
+		ret = stat(pathname, &sb);
+		if (ret == -1)
+			tst_brkm(TBROK | TERRNO, cleanup_fn,
+				"Failed to stat file '%s' at %s:%d",
+				pathname, file, lineno);
+
+		ret = gettimeofday(cotimes, NULL);
+		if (ret == -1)
+			tst_brkm(TBROK | TERRNO, cleanup_fn,
+				"Failed to gettimeofday() at %s:%d",
+				file, lineno);
+		cotimes[1] = cotimes[0];
+
+		set_time(cotimes, times,
+			sb.st_atime, sb.st_atim.tv_nsec / 1000);