lib/libc/time/utimes.c


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#include <errno.h>    // for EINVAL, errno
#include <fcntl.h>    // for AT_FDCWD
#include <stddef.h>   // for NULL
#include <sys/stat.h> // for utimensat
#include <sys/time.h> // for timeval, utimes
#include <time.h>     // for timespec

int utimes(const char *path, const struct timeval times[2])
{
	struct timespec ts[2];

	if (times) {
		if (times[0].tv_usec >= 1000000L ||
		    times[1].tv_usec >= 1000000L) {
			errno = EINVAL;
			return -1;
		}

		ts[0].tv_sec = times[0].tv_sec;
		ts[0].tv_nsec = times[0].tv_usec * 1000;
		ts[1].tv_sec = times[1].tv_sec;
		ts[1].tv_nsec = times[1].tv_usec * 1000;
	}

	return utimensat(AT_FDCWD, path, times ? ts : NULL, 0);
}