TCSETPGRP(3C) Standard C Library Functions TCSETPGRP(3C)


NAME


tcsetpgrp - set foreground process group ID

SYNOPSIS


#include <sys/types.h>
#include <unistd.h>

int tcsetpgrp(int fildes, pid_t pgid_id);


DESCRIPTION


If the process has a controlling terminal, tcsetpgrp() will set the
foreground process group ID associated with the terminal to pgid_id. The
file associated with fildes must be the controlling terminal of the
calling process and the controlling terminal must be currently associated
with the session of the calling process. The value of pgid_id must match
a process group ID of a process in the same session as the calling
process.

RETURN VALUES


Upon successful completion, 0 is returned. Otherwise, -1 is returned and
errno is set to indicate the error.

ERRORS


The tcsetpgrp() function will 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.


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.


EIO
The process is not ignoring or holding SIGTTOU and is a member
of an orphaned process group.


EPERM
The value of pgid_id does not match the process group ID of a
process in the same session as the calling process.


ATTRIBUTES


See attributes(7) for descriptions of the following attributes:


+--------------------+--------------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+--------------------------------+
|Interface Stability | Standard |
+--------------------+--------------------------------+
|MT-Level | MT-Safe, and Async-Signal-Safe |
+--------------------+--------------------------------+

SEE ALSO


tcgetpgrp(3C), termio(4I), attributes(7), standards(7)


August 14, 2002 TCSETPGRP(3C)