ttyname.c raw

   1  #include <unistd.h>
   2  #include <errno.h>
   3  #include <limits.h>
   4  
   5  char *ttyname(int fd)
   6  {
   7  	static char buf[TTY_NAME_MAX];
   8  	int result;
   9  	if ((result = ttyname_r(fd, buf, sizeof buf))) {
  10  		errno = result;
  11  		return NULL;
  12  	}
  13  	return buf;
  14  }
  15