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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
TCGETPGRP(3P) POSIX Programmer's Manual TCGETPGRP(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.
tcgetpgrp — get the foreground process group ID
#include <unistd.h>
pid_t tcgetpgrp(int fildes);
The tcgetpgrp() function shall return the value of the process group
ID of the foreground process group associated with the terminal.
If there is no foreground process group, tcgetpgrp() shall return a
value greater than 1 that does not match the process group ID of any
existing process group.
The tcgetpgrp() function is allowed from a process that is a member
of a background process group; however, the information may be
subsequently changed by a process that is a member of a foreground
process group.
Upon successful completion, tcgetpgrp() shall return the value of the
process group ID of the foreground process associated with the
terminal. Otherwise, −1 shall be returned and errno set to indicate
the error.
The tcgetpgrp() function shall fail if:
EBADF The fildes argument is not a valid file descriptor.
ENOTTY The calling process does not have a controlling terminal, or
the file is not the controlling terminal.
The following sections are informative.
None.
None.
None.
None.
setsid(3p), setpgid(3p), tcsetpgrp(3p)
The Base Definitions volume of POSIX.1‐2008, sys_types.h(0p),
unistd.h(0p)
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 TCGETPGRP(3P)
Pages that refer to this page: unistd.h(0p), tcsetpgrp(3p)