tcsetpgrp - set foreground process group ID
int tcsetpgrp(int fildes, pid_t pgid_id);
If the process has a controlling terminal, tcsetpgrp() will
set the foreground process group ID associated with the ter-
minal to pgid_id. The file associated with fildes must be
the controlling terminal of the calling process and the con-
trolling terminal must be currently associated with the ses-
sion of the calling process. The value of pgid_id must match
a process group ID of a process in the same session as the
Upon successful completion, 0 is returned. Otherwise, -1 is
returned and errno is set to indicate the error.
The tcsetpgrp() function will fail if:
EBADF The fildes argument is not a valid file descriptor.
This implementation does not support the value in the
The calling process does not have a controlling termi-
nal, 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
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| MT-Level | MT-Safe, and Async-Signal-Safe|
tcgetpgrp(3C), attributes(5), termio(7I)
Man(1) output converted with