PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

TCSETPGRP(3P)             POSIX Programmer's Manual            TCSETPGRP(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       tcsetpgrp — set the foreground process group ID

SYNOPSIS         top

       #include <unistd.h>

       int tcsetpgrp(int fildes, pid_t pgid_id);

DESCRIPTION         top

       If the process has a controlling terminal, tcsetpgrp() shall set the
       foreground process group ID associated with the terminal to pgid_id.
       The application shall ensure that the file associated with fildes is
       the controlling terminal of the calling process and the controlling
       terminal is currently associated with the session of the calling
       process. The application shall ensure that the value of pgid_id
       matches a process group ID of a process in the same session as the
       calling process.

       Attempts to use tcsetpgrp() from a process which is a member of a
       background process group on a fildes associated with its controlling
       terminal shall cause the process group to be sent a SIGTTOU signal.
       If the calling thread is blocking SIGTTOU signals or the process is
       ignoring SIGTTOU signals, the process shall be allowed to perform the
       operation, and no signal is sent.

RETURN VALUE         top

       Upon successful completion, 0 shall be returned. Otherwise, −1 shall
       be returned and errno set to indicate the error.

ERRORS         top

       The tcsetpgrp() function shall fail if:

       EBADF  The fildes argument is not a valid file descriptor.

       EINVAL This implementation does not support the value in the pgid_id
              argument.

       EIO    The process group of the writing process is orphaned, the
              calling thread is not blocking SIGTTOU, and the process is not
              ignoring SIGTTOU.

       ENOTTY The calling process does not have a controlling terminal, or
              the file is not the controlling terminal, or the controlling
              terminal is no longer associated with the session of the
              calling process.

       EPERM  The value of pgid_id is a value supported by the
              implementation, but does not match the process group ID of a
              process in the same session as the calling process.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       tcgetpgrp(3p)

       The Base Definitions volume of POSIX.1‐2008, sys_types.h(0p),
       unistd.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013                       TCSETPGRP(3P)