NAME

killpg − send signal to a process group

SYNOPSIS

killpg(pgrp, sig)
int pgrp, sig;

DESCRIPTION

Killpg sends the signal sig to the process group pgrp. See signal(2) for a list of signals; see jobs(3J) for an explanation of process groups.

The sending process and members of the process group must have the same effective user ID, otherwise this call is restricted to the super-user.  As a single special case the continue signal SIGCONT may be sent to any process which is a descendant of the current process. 

RETURN VALUE

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

ERRORS

Killpg will fail and no signal will be sent if any of the following occur:

[EINVAL] Sig is not a valid signal number. 

[ESRCH] No process group can be found corresponding to that specified by pgrp. 

[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

kill(2), signal(2), jobs(3J)

Sun System Release 0.3  —  3 April 1983