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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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TCSETPGRP(3P) POSIX Programmer's Manual TCSETPGRP(3P)
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.
tcsetpgrp — set the foreground process group ID
#include <unistd.h>
int tcsetpgrp(int fildes, pid_t pgid_id);
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.
Upon successful completion, 0 shall be returned. Otherwise, -1
shall be returned and errno set to indicate the error.
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.
None.
None.
None.
None.
tcgetpgrp(3p)
The Base Definitions volume of POSIX.1‐2017, sys_types.h(0p),
unistd.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. 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.opengroup.org/unix/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 2017 TCSETPGRP(3P)
Pages that refer to this page: unistd.h(0p), setpgid(3p), tcgetpgrp(3p)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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