/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1990, 1993, 1994 * The Regents of the University of California. All rights reserved. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/types.h> #include <sys/ioctl.h> #include <sys/stat.h> #include <errno.h> #include <fcntl.h> #include <grp.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <termios.h> #include <unistd.h> #include <util.h> int openpty(amaster, aslave, name, termp, winp) int *amaster, *aslave; char *name; struct termios *termp; struct winsize *winp; { static char line[] = "/dev/ptyXX"; register const char *cp1, *cp2; register int master, slave, ttygid; struct group *gr; if ((gr = getgrnam("tty")) != NULL) ttygid = gr->gr_gid; else ttygid = -1; for (cp1 = "pqrstuvwxy"; *cp1; cp1++) { line[8] = *cp1; for (cp2 = "0123456789abcdef"; *cp2; cp2++) { line[5] = 'p'; line[9] = *cp2; if ((master = open(line, O_RDWR, 0)) == -1) { if (errno == ENOENT) return (-1); /* out of ptys */ } else { line[5] = 't'; (void) grantpt(master); (void) revoke(line); if ((slave = open(line, O_RDWR, 0)) != -1) { *amaster = master; *aslave = slave; if (name) strcpy(name, line); if (termp) (void) tcsetattr(slave, TCSAFLUSH, termp); if (winp) (void) ioctl(slave, TIOCSWINSZ, (char *)winp); return (0); } (void) close(master); } } } errno = ENOENT; /* out of ptys */ return (-1); } int forkpty(amaster, name, termp, winp) int *amaster; char *name; struct termios *termp; struct winsize *winp; { int master, slave, pid; if (openpty(&master, &slave, name, termp, winp) == -1) return (-1); switch (pid = fork()) { case -1: return (-1); case 0: /* * child */ (void) close(master); login_tty(slave); return (0); } /* * parent */ *amaster = master; (void) close(slave); return (pid); }