rocky@polyof.poly.edu (A1 rocky shiotsuki (staff) ) (02/06/91)
I need to compile a program on HP 9000 Series 400 which
use TIOCNOTTY.
In the file /usr/include/sys/ioctl.h, a TIOCNOTTY is defined
as followed:
#ifdef __hp9000s800
/*
* tty ioctl commands
*/
#ifdef notdef
#define TIOCNOTTY _IO('t', 113) /* void tty association */
#endif /* notdef */
So, On Series 800, a TIOCNOTTY is defined, but not Series 400.
Some one can give me clue what to do.
Thanks
-----------------------------------------------------------------------
Rocky Shiotsuki Internet: rocky@puscs.poly.edu
Systems Programmer 128.238.5.8
Polytechnic University
333 Jay Street, Brooklyn, New York 11201tml@tik.vtt.fi (Tor Lillqvist) (02/06/91)
In article <1991Feb5.201415.22555@polyof.poly.edu> rocky@polyof.poly.edu (A1 rocky shiotsuki (staff) ) writes:
I need to compile a program on HP 9000 Series 400 which
use TIOCNOTTY.
In the file /usr/include/sys/ioctl.h, a TIOCNOTTY is defined
as followed:
#ifdef __hp9000s800
/*
* tty ioctl commands
*/
#ifdef notdef
#define TIOCNOTTY _IO('t', 113) /* void tty association */
#endif /* notdef */
So, On Series 800, a TIOCNOTTY is defined, but not Series 400.
No it isn't defined on s800. Note the #ifdef notdef. Anyway, to get
the desired effect (detach from controlling terminal), use the
setsid() system call. Then do signal(SIGHUP, SIG_IGN) and fork(), and
continue in the child, or else you might acquire a new controlling
terminal if and when you happen to open a terminal device file.
--
Tor Lillqvist,
working, but not speaking, for the Technical Research Centre of Finlandash@hpindda.cup.hp.com (Art Harkin) (02/08/91)
A possible alternative to TIOCNOTTY is the following:
f=open("/dev/tty",O_RDWR);
#ifdef hpux
setpgrp();
#else
(void)ioctl(f, (int)TIOCNOTTY, (char *)0);
#endif
The command setpgrp() does disassociate with the process's tty.
See setpgrp(2) for more information.
Art Harkin
HP