1KILLPG(2)                     System Calls Manual                    KILLPG(2)
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NAME

6       killpg - send signal to a process group
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SYNOPSIS

9       killpg(pgrp, sig)
10       int pgrp, sig;
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DESCRIPTION

13       Killpg  sends  the signal sig to the process group pgrp.  See sigvec(2)
14       for a list of signals.
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16       The sending process and members of the process group must have the same
17       effective  user  ID, or the sender must be the super-user.  As a single
18       special case the continue signal SIGCONT may be  sent  to  any  process
19       that is a descendant of the current process.
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RETURN VALUE

22       Upon  successful  completion,  a  value of 0 is returned.  Otherwise, a
23       value of -1 is returned and the global variable errno is set  to  indi‐
24       cate the error.
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ERRORS

27       Killpg  will  fail  and  no signal will be sent if any of the following
28       occur:
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30       [EINVAL]       Sig is not a valid signal number.
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32       [ESRCH]        No process can be found in the process  group  specified
33                      by pgrp.
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35       [ESRCH]        The process group was given as 0 but the sending process
36                      does not have a process group.
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38       [EPERM]        The sending process is not the  super-user  and  one  or
39                      more  of  the  target processes has an effective user ID
40                      different from that of the sending process.
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SEE ALSO

43       kill(2), getpgrp(2), sigvec(2)
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474th Berkeley Distribution        May 14, 1986                        KILLPG(2)