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KILLPG(2) UNIX Programmer's Manual KILLPG(2)
NNAAMMEE
kkiillllppgg - send signal to a process group
SSYYNNOOPPSSIISS
##iinncclluuddee <<ssyyss//ssiiggnnaall..hh>>
_i_n_t
kkiillllppgg(_p_i_d___t _p_g_r_p, _i_n_t _s_i_g)
DDEESSCCRRIIPPTTIIOONN
KKiillllppgg() sends the signal _s_i_g to the process group _p_g_r_p. See sigaction(2)
for a list of signals. If _p_g_r_p is 0, kkiillllppgg() 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 superuser. As a single
special case the continue signal SIGCONT may be sent to any process that
is a descendant of the current process.
RREETTUURRNN VVAALLUUEESS
Upon successful completion, a value of 0 is returned. Otherwise, a value
of 1 is returned and the global variable _e_r_r_n_o is set to indicate the
error.
EERRRROORRSS
KKiillllppgg() will fail and no signal will be sent if:
[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 superuser and one or more
of the target processes has an effective user ID different
from that of the sending process.
SSEEEE AALLSSOO
kill(2), getpgrp(2), sigaction(2)
HHIISSTTOORRYY
The kkiillllppgg function call appeared in 4.0BSD.
4th Berkeley Distribution March 10, 1991 1