/* $NetBSD: pty.c,v 1.4 2014/01/08 02:17:30 christos Exp $ */ /*- * Copyright (c) 2004 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christos Zoulas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> #if defined(LIBC_SCCS) && !defined(lint) __RCSID("$NetBSD: pty.c,v 1.4 2014/01/08 02:17:30 christos Exp $"); #endif /* LIBC_SCCS and not lint */ #include "namespace.h" #include <fcntl.h> #include <string.h> #include <errno.h> #include <stdlib.h> #include <sys/ioctl.h> int grantpt(int fildes) { return ioctl(fildes, TIOCGRANTPT, 0); } int /*ARGSUSED*/ unlockpt(int fildes) { return 0; } char * ptsname(int fildes) { static struct ptmget pm; if (ioctl(fildes, TIOCPTSNAME, &pm) == -1) return NULL; return pm.sn; } int ptsname_r(int fildes, char *buf, size_t buflen) { struct ptmget pm; if (buf == NULL) return EINVAL; if (ioctl(fildes, TIOCPTSNAME, &pm) == -1) return errno; if (strlcpy(buf, pm.sn, buflen) > buflen) return ERANGE; return 0; } |