636402a76a
- Define NO__SCCSID in CFLAGS to preserve existing behavior of omitting SCCS IDs by default. - While here, fix the $FreeBSD$ in pw_util.c to use __FBSDID.
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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. 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/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
__SCCSID("@(#)pty.c 8.3 (Berkeley) 5/16/94");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <grp.h>
|
|
#include <libutil.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
openpty(int *amaster, int *aslave, char *name, struct termios *termp,
|
|
struct winsize *winp)
|
|
{
|
|
const char *slavename;
|
|
int master, slave;
|
|
|
|
master = posix_openpt(O_RDWR|O_NOCTTY);
|
|
if (master == -1)
|
|
return (-1);
|
|
|
|
if (grantpt(master) == -1)
|
|
goto bad;
|
|
|
|
if (unlockpt(master) == -1)
|
|
goto bad;
|
|
|
|
slavename = ptsname(master);
|
|
if (slavename == NULL)
|
|
goto bad;
|
|
|
|
slave = open(slavename, O_RDWR);
|
|
if (slave == -1)
|
|
goto bad;
|
|
|
|
*amaster = master;
|
|
*aslave = slave;
|
|
|
|
if (name)
|
|
strcpy(name, slavename);
|
|
if (termp)
|
|
tcsetattr(slave, TCSAFLUSH, termp);
|
|
if (winp)
|
|
ioctl(slave, TIOCSWINSZ, (char *)winp);
|
|
|
|
return (0);
|
|
|
|
bad: close(master);
|
|
return (-1);
|
|
}
|
|
|
|
int
|
|
forkpty(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:
|
|
(void)close(slave);
|
|
return (-1);
|
|
case 0:
|
|
/*
|
|
* child
|
|
*/
|
|
(void)close(master);
|
|
login_tty(slave);
|
|
return (0);
|
|
}
|
|
/*
|
|
* parent
|
|
*/
|
|
*amaster = master;
|
|
(void) close(slave);
|
|
return (pid);
|
|
}
|