dup2.c

来自「KPIT GNU Tools is a set of GNU developme」· C语言 代码 · 共 8 行

#include <fcntl.h>

int
dup2 (int fd1, int fd2) {
	close (fd2);	/* ignore errors, if any */
	return (fcntl (fd1, F_DUPFD, fd2));
}