+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "test.h"
+
+#define TEST(c, ...) ((c) ? 1 : (t_error(#c" failed: " __VA_ARGS__),0))
+#define TESTVAL(v,op,x) TEST(v op x, "%jd\n", (intmax_t)(v))
+
+int main(void)
+{
+ struct stat st;
+ FILE *f;
+ int fd;
+ time_t t;
+
+ TEST(utimensat(AT_FDCWD, "/dev/null/invalid", ((struct timespec[2]){{.tv_nsec=UTIME_OMIT},{.tv_nsec=UTIME_OMIT}}), 0)==0 || errno==ENOTDIR,
+ "%s\n", strerror(errno));
+ TEST(futimens(-1, ((struct timespec[2]){{.tv_nsec=UTIME_OMIT},{.tv_nsec=UTIME_OMIT}}))==0 || errno==EBADF,
+ "%s\n", strerror(errno));
+
+ if (!TEST(f = tmpfile())) return t_status;
+ fd = fileno(f);
+
+ TEST(futimens(fd, (struct timespec[2]){0}) == 0, "\n");
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec,==,0);
+ TESTVAL(st.st_atim.tv_nsec,==,0);
+ TESTVAL(st.st_mtim.tv_sec,==,0);
+ TESTVAL(st.st_mtim.tv_nsec,==,0);
+
+ TEST(futimens(fd, ((struct timespec[2]){{.tv_sec=1,.tv_nsec=UTIME_OMIT},{.tv_sec=1,.tv_nsec=UTIME_OMIT}})) == 0, "\n");
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec,==,0);
+ TESTVAL(st.st_atim.tv_nsec,==,0);
+ TESTVAL(st.st_mtim.tv_sec,==,0);
+ TESTVAL(st.st_mtim.tv_nsec,==,0);
+
+ t = time(0);
+
+ TEST(futimens(fd, ((struct timespec[2]){{.tv_nsec=UTIME_NOW},{.tv_nsec=UTIME_OMIT}})) == 0, "\n");
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec,>=,t);
+ TESTVAL(st.st_mtim.tv_sec,==,0);
+ TESTVAL(st.st_mtim.tv_nsec,==,0);
+
+ TEST(futimens(fd, (struct timespec[2]){0}) == 0, "\n");
+ TEST(futimens(fd, ((struct timespec[2]){{.tv_nsec=UTIME_OMIT},{.tv_nsec=UTIME_NOW}})) == 0, "\n");
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec,==,0);
+ TESTVAL(st.st_mtim.tv_sec,>=,t);
+
+ TEST(futimens(fd, ((struct timespec[2]){{.tv_nsec=UTIME_NOW},{.tv_nsec=UTIME_OMIT}})) == 0, "\n");
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec,>=,t);
+ TESTVAL(st.st_mtim.tv_sec,>=,t);
+
+ if (TEST((time_t)(1LL<<32) == (1LL<<32), "implementation has Y2038 EOL\n")) {
+ if (TEST(futimens(fd, ((struct timespec[2]){{.tv_sec=1LL<<32},{.tv_sec=1LL<<32}})) == 0, "%s\n", strerror(errno))) {
+ TEST(fstat(fd, &st) == 0, "\n");
+ TESTVAL(st.st_atim.tv_sec, ==, 1LL<<32);
+ TESTVAL(st.st_mtim.tv_sec, ==, 1LL<<32);
+ }
+ }
+
+ fclose(f);
+
+ return t_status;
+}