/* Assign a given terminal as controlling terminal and as standard input,
standard output, standard error of the current process.
- Copyright (C) 2010 Free Software Foundation, Inc.
+ Copyright (C) 2010-2011 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
#include <fcntl.h>
#include <unistd.h>
+#include <sys/ioctl.h>
int
login_tty (int slave_fd)
setsid ();
/* Make fd the controlling terminal for the current process.
- On Solaris: A terminal becomes the controlling terminal of a session
- if it is being open()ed, at a moment when
- 1. it is not already the controlling terminal of some session, and
- 2. the process that open()s it is a session leader that does not have
- a controlling terminal.
- We assume condition 1, try to ensure condition 2, and then open() it. */
+ On BSD and OSF/1: There is ioctl TIOCSCTTY for this purpose.
+ On Solaris:
+ A terminal becomes the controlling terminal of a session
+ if it is being open()ed, at a moment when
+ 1. it is not already the controlling terminal of some session, and
+ 2. the process that open()s it is a session leader that does not have
+ a controlling terminal.
+ We assume condition 1, try to ensure condition 2, and then open() it.
+ */
for (i = 0; i < 3; i++)
if (i != slave_fd)
close (i);
+#ifdef TIOCSCTTY
+ if (ioctl (slave_fd, TIOCSCTTY, NULL) < 0)
+ return -1;
+#else
{
char *slave_name;
int dummy_fd;
return -1;
close (dummy_fd);
}
+#endif
- /* Assign fd to the standard input, standard output, and standardd error of
+ /* Assign fd to the standard input, standard output, and standard error of
the current process. */
for (i = 0; i < 3; i++)
if (slave_fd != i)