4.3BSD-UWisc/man/cat2/killpg.2

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KILLPG(2)           UNIX Programmer's Manual            KILLPG(2)



NAME
     killpg - send signal to a process group

SYNOPSIS
     killpg(pgrp, sig)
     int pgrp, sig;

DESCRIPTION
     _K_i_l_l_p_g sends the signal _s_i_g to the process group _p_g_r_p.  See
     _s_i_g_v_e_c(2) for a list of signals.

     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
     Upon successful completion, a value of 0 is returned.  Oth-
     erwise, a value of -1 is returned and the global variable
     _e_r_r_n_o is set to indicate the error.

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

     [EINVAL]       _S_i_g is not a valid signal number.

     [ESRCH]        No process can be found in the process group
                    specified by _p_g_r_p.

     [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.

SEE ALSO
     kill(2), getpgrp(2), sigvec(2)













Printed 12/27/86          May 14, 1986                          1