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<assertions>
<assertion id="1" tag="ref:XSH6:22101:22101 pt:XSI">
The killpg () function sends the signal sig to the process
group pgrp.
</assertion>
<assertion id="2" tag="ref:XSH6:22102:22102 pt:XSI">
killpg(pgrp, sig) is equivalent to kill(-pgrp, sig), when pgrp is greater than 1,
</assertion>
<assertion id="3" tag="ref:XSH6:22102:22103 pt:XSI">
The behavior of killpg ( ) is undefined if pgrp is less than or equal to 1.
</assertion>
<assertion id="4" tag="ref:XSH6:22105:22105 pt:XSI">
killpg returns 0 upon successful completion.
</assertion>
<assertion id="5" tag="ref:XSH6:22105:22106 pt:XSI">
killpg returns -1, upon unsuccessful completion.
</assertion>
<assertion id="6" tag="ref:XSH6:22009:22009 pt:XSI">
errno shall be set to EINVAL, when tThe value of the sig argument is an
invalid or unsupported signal
number.
</assertion>
<assertion id="7" tag="ref:XSH6:22010:22011 pt:XSI">
errno shall be set to EPERM, when the process does not have permission to
send the signal to any
receiving process.
</assertion>
<assertion id="8" tag="ref:XSH6:22012:22013 pt:XSI">
errno shall be set to ESRCH, when no process or process group can be found
corresponding to that specified by pid.
</assertion>
</assertions>
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