TIOCSPGRP(2const) TIOCSPGRP(2const)
NAME
TIOCGPGRP, TIOCSPGRP, TIOCGSID - process group and session ID
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <asm/termbits.h> /* Definition of TIOC* constants */
#include <sys/ioctl.h>
int ioctl(int fd, TIOCGPGRP, pid_t *argp);
int ioctl(int fd, TIOCSPGRP, const pid_t *argp);
int ioctl(int fd, TIOCGSID, pid_t *argp);
DESCRIPTION
TIOCGPGRP
When successful, equivalent to *argp = tcgetpgrp(fd).
Get the process group ID of the foreground process group on this
terminal.
TIOCSPGRP
Equivalent to tcsetpgrp(fd, *argp).
Set the foreground process group ID of this terminal.
TIOCGSID
When successful, equivalent to *argp = tcgetsid(fd).
Get the session ID of the given terminal. This fails with the
error ENOTTY if the terminal is not a master pseudoterminal and
not our controlling terminal. Strange.
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set
to indicate the error.
ERRORS
ENOTTY The terminal is not a master pseudoterminal and not our control-
ling terminal.
EPERM Insufficient permission.
SEE ALSO
ioctl(2), ioctl_tty(2), tcgetpgrp(3), tcsetpgrp(3), tcgetsid(3)
Linux man-pages 6.9.1 2024-06-13 TIOCSPGRP(2const)
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