mirror of
https://github.com/tmux/tmux.git
synced 2024-10-31 22:58:49 +00:00
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
|
|
* Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
|
|
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
|
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <stropts.h>
|
|
#include <unistd.h>
|
|
|
|
#include "tmux.h"
|
|
|
|
pid_t
|
|
forkpty(int *master, char *name, struct termios *tio, struct winsize *ws)
|
|
{
|
|
int slave = -1;
|
|
char *path;
|
|
pid_t pid;
|
|
|
|
if ((*master = open("/dev/ptmx", O_RDWR|O_NOCTTY)) == -1)
|
|
return (-1);
|
|
if (grantpt(*master) != 0)
|
|
goto out;
|
|
if (unlockpt(*master) != 0)
|
|
goto out;
|
|
|
|
if ((path = ptsname(*master)) == NULL)
|
|
goto out;
|
|
if (name != NULL)
|
|
strlcpy(name, path, TTY_NAME_MAX);
|
|
if ((slave = open(path, O_RDWR|O_NOCTTY)) == -1)
|
|
goto out;
|
|
|
|
switch (pid = fork()) {
|
|
case -1:
|
|
goto out;
|
|
case 0:
|
|
close(*master);
|
|
|
|
setsid();
|
|
#ifdef TIOCSCTTY
|
|
if (ioctl(slave, TIOCSCTTY, NULL) == -1)
|
|
fatal("ioctl failed");
|
|
#endif
|
|
|
|
if (ioctl(slave, I_PUSH, "ptem") == -1)
|
|
fatal("ioctl failed");
|
|
if (ioctl(slave, I_PUSH, "ldterm") == -1)
|
|
fatal("ioctl failed");
|
|
|
|
if (tio != NULL && tcsetattr(slave, TCSAFLUSH, tio) == -1)
|
|
fatal("tcsetattr failed");
|
|
if (ioctl(slave, TIOCSWINSZ, ws) == -1)
|
|
fatal("ioctl failed");
|
|
|
|
dup2(slave, 0);
|
|
dup2(slave, 1);
|
|
dup2(slave, 2);
|
|
if (slave > 2)
|
|
close(slave);
|
|
return (0);
|
|
}
|
|
|
|
close(slave);
|
|
return (pid);
|
|
|
|
out:
|
|
if (*master != -1)
|
|
close(*master);
|
|
if (slave != -1)
|
|
close(slave);
|
|
return (-1);
|
|
}
|