View Source: killpg(2) - Waikato Linux Users Group

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killpg - send signal to a process group
!!SYNOPSIS
 __#include <signal.h>__
 __int killpg(int__ ''pgrp''__, int__ ''sig''__);__

!!DESCRIPTION
__Killpg__ sends the signal ''sig'' to the process group ''pgrp''. See sigaction(2) for a list of signals. If ''pgrp'' is 0, __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 that is a descendant of the current process.

!!RETURN VALUE
On success, zero is returned. On error, -1 is returned, and ''errno'' is set appropriately.

!!ERRORS
;[EINVAL]: ''Sig'' is not a valid signal number.
;[ESRCH]: No process can be found in the process group specified by ''pgrp''.
;[ESRCH]: The process group was given as 0 but the sending process does not have a process group.
;[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.

!!CONFORMING TO
SVr4, 4.4BSD (The __killpg__ function call first appeared in 4.0BSD).

!!SEE ALSO
kill(2), getpgrp(2), signal(2)

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Last edited on Thursday, February 20, 2003 11:21:28 pm by PerryLorier

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