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/* Fork a child process attached to the slave of a pseudo-terminal.
Copyright (C) 2010-2014 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <pty.h>
#if HAVE_FORKPTY
/* Provide a wrapper with the prototype of glibc-2.8 and newer. */
# undef forkpty
int
rpl_forkpty (int *amaster, char *name, struct termios const *termp,
struct winsize const *winp)
{
/* Cast away const, for implementations with weaker prototypes. */
return forkpty (amaster, name, (struct termios *) termp,
(struct winsize *) winp);
}
#else /* AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10, mingw */
# include <pty.h>
# include <unistd.h>
extern int login_tty (int slave_fd);
int
forkpty (int *amaster, char *name,
const struct termios *termp, const struct winsize *winp)
{
int master, slave, pid;
if (openpty (&master, &slave, name, termp, winp) == -1)
return -1;
switch (pid = fork ())
{
case -1:
close (master);
close (slave);
return -1;
case 0:
/* Child. */
close (master);
if (login_tty (slave))
_exit (1);
return 0;
default:
/* Parent. */
*amaster = master;
close (slave);
return pid;
}
}
#endif
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