killpg.2freebsd

Langue: en

Version: 265856 (debian - 07/07/09)

Section: 2 (Appels système)


BSD mandoc

NAME

killpg - send signal to a process group

LIBRARY

Lb libc

SYNOPSIS

In sys/types.h In signal.h Ft int Fn killpg pid_t pgrp int sig

DESCRIPTION

The Fn killpg function sends the signal Fa sig to the process group Fa pgrp . See sigaction(2) for a list of signals. If Fa pgrp is 0, Fn killpg sends the signal to the sending process's process group.

The sending process and members of the process group must have the same effective user ID, or the sender must be the super-user. As a single special case the continue signal SIGCONT may be sent to any process with the same session ID as the caller.

RETURN VALUES

Rv -std killpg

ERRORS

The Fn killpg function will fail and no signal will be sent if:
Bq Er EINVAL
The Fa sig argument is not a valid signal number.
Bq Er ESRCH
No process can be found in the process group specified by Fa pgrp .
Bq Er ESRCH
The process group was given as 0 but the sending process does not have a process group.
Bq Er EPERM
The sending process is not the super-user and one or more of the target processes has an effective user ID different from that of the sending process.

SEE ALSO

getpgrp(2), kill(2), sigaction(2)

HISTORY

The Fn killpg function appeared in BSD 4.0