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)