mcst-linux-kernel/glibc-2.35/login/forkpty.c

61 lines
1.6 KiB
C

/* Copyright (C) 1998-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <termios.h>
#include <unistd.h>
#include <utmp.h>
#include <pty.h>
#include <shlib-compat.h>
int
__forkpty (int *pptmx, char *name, const struct termios *termp,
const struct winsize *winp)
{
int ptmx, terminal, pid;
if (openpty (&ptmx, &terminal, name, termp, winp) == -1)
return -1;
switch (pid = __fork ())
{
case -1:
__close (ptmx);
__close (terminal);
return -1;
case 0:
/* Child. */
__close (ptmx);
if (login_tty (terminal))
_exit (1);
return 0;
default:
/* Parent. */
*pptmx = ptmx;
__close (terminal);
return pid;
}
}
versioned_symbol (libc, __forkpty, forkpty, GLIBC_2_34);
libc_hidden_ver (__forkpty, forkpty)
#if OTHER_SHLIB_COMPAT (libutil, GLIBC_2_0, GLIBC_2_34)
compat_symbol (libutil, __forkpty, forkpty, GLIBC_2_0);
#endif