TIOCSPGRP(2const) — Linux manual page

TIOCSPGRP(2const)                                      TIOCSPGRP(2const)

NAME         top

       TIOCGPGRP, TIOCSPGRP, TIOCGSID - process group and session ID

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #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         top

       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         top

       On success, 0 is returned.  On error, -1 is returned, and errno
       is set to indicate the error.

ERRORS         top

       ENOTTY The terminal is not a master pseudoterminal and not our
              controlling terminal.

       EPERM  Insufficient permission.

SEE ALSO         top

       ioctl(2), ioctl_tty(2), tcgetpgrp(3), tcsetpgrp(3), tcgetsid(3)

COLOPHON         top

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Linux man-pages 6.9.1          2024-06-13              TIOCSPGRP(2const)

Pages that refer to this page: ioctl_tty(2)

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