NAME
tcsetpgrp —
set foreground process group
ID
LIBRARY
library “libc”
SYNOPSIS
#include
<unistd.h>
int
tcsetpgrp(int
fd, pid_t
pgrp_id);
DESCRIPTION
If the process has a controlling terminal, the
tcsetpgrp function sets the foreground process group
ID associated with the terminal device to pgrp_id. The
terminal device associated with fd 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 pgrp_id must be the same as the process group
ID of a process in the same session as the calling process.
Upon successful completion, tcsetpgrp
returns a value of zero.
ERRORS
If an error occurs, tcgetpgrp returns -1
and the global variable errno is set to indicate the
error, as follows:
- [
EBADF] - The fd argument is not a valid file descriptor.
- [
EINVAL] - An invalid value of pgrp_id was specified.
- [
ENOTTY] - The calling process does not have a controlling terminal, or the file represented by fd is not the controlling terminal, or the controlling terminal is no longer associated with the session of the calling process.
- [
EPERM] - The pgrp_id argument does not match the process group ID of a process in the same session as the calling process.
SEE ALSO
STANDARDS
The tcsetpgprp function conforms to
IEEE Std 1003.1-1990 (“POSIX.1”).