NAME

tcsetpgrp − set terminal foreground process group id

SYNOPSIS

#include <unistd.h>

int tcsetpgrp (int fildes, pid_t pgid)

DESCRIPTION

tcsetpgrp sets the foreground process group ID of the terminal specified by fildes to pgid. 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 must match a process group ID of a process in the same session as the calling process. 

tcsetpgrp fails if one or more of the following is true:

EBADF The fildes argument is not a valid file descriptor. 

EINVAL The fildes argument is a terminal that does not support tcsetpgrp, or pgid is not a valid process group ID. 

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 pgid does not match the process group ID of an existing process in the same session as the calling process. 

SEE ALSO

tcsetpgrp(3C), tcsetsid(3C), termio(7). 

DIAGNOSTICS

Upon successful completion, tcsetpgrp returns a value of 0.  Otherwise, a value of −1 is returned and errno is set to indicate the error.