man/man3/postnote.html


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<title>postnote(3) - Plan 9 from User Space</title>
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<tr><td width=20><td><b>POSTNOTE(3)</b><td align=right><b>POSTNOTE(3)</b>
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    <br>
<p><font size=+1><b>NAME     </b></font><br>

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    postnote &ndash; send a note to a process or process group<br>
    
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<p><font size=+1><b>SYNOPSIS     </b></font><br>

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    <tt><font size=+1>#include &lt;u.h&gt;<br>
    #include &lt;libc.h&gt; 
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    <tt><font size=+1>int &nbsp;&nbsp;&nbsp;postnote(int who, int pid, char *note)<br>
    </font></tt>
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<p><font size=+1><b>DESCRIPTION     </b></font><br>

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    <i>Postnote</i> sends a note to a process or process group. If <i>who</i> is
    <tt><font size=+1>PNPROC</font></tt>, then <i>note</i> is sent to the process with id <i>pid</i>. If <i>who</i> is
    <tt><font size=+1>PNGROUP</font></tt><i>,</i> the note is delivered to the process group which has
    the process with id <i>pid</i> as a member. For <tt><font size=+1>PNGROUP</font></tt> only, if the
    calling process is in the target group, the note is <i>not</i> delivered
    to
    that process. 
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    If the write is successful, zero is returned. Otherwise &ndash;1 is returned.<br>
    
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<p><font size=+1><b>SOURCE     </b></font><br>

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    <tt><font size=+1>/usr/local/plan9/src/lib9/postnote.c<br>
    </font></tt>
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<p><font size=+1><b>SEE ALSO     </b></font><br>

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    <a href="../man3/notify.html"><i>notify</i>(3)</a>, <a href="../man3/intro.html"><i>intro</i>(3)</a><br>
    
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<p><font size=+1><b>DIAGNOSTICS     </b></font><br>

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    Sets <i>errstr</i>.<br>
    
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