github.com/afumu/libc@v0.0.6/musl/src/unistd/ttyname.c (about)

     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  }