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POSTNOTE(2)                   System Calls Manual                  POSTNOTE(2)



NAME
       postnote - send a note to a process or process group

SYNOPSIS
       #include <u.h>
       #include <libc.h>

       int  postnote(int who, int pid, char *note)

DESCRIPTION
       Postnote sends a note to a process or process group.  If who is PNPROC,
       then note is written to /proc/pid/note.  If who is PNGROUP, the note is
       delivered  to  the  process  group by writing note to /proc/pid/notepg.
       For PNGROUP only, if the calling process is in the  target  group,  the
       note is not delivered to that process.

       If  the  write  is  successful,  zero  is  returned.   Otherwise  -1 is
       returned.

SOURCE
       /sys/src/libc/9sys/postnote.c

SEE ALSO
       notify(2), intro(2), proc(3)

DIAGNOSTICS
       Sets errstr.



                                                                   POSTNOTE(2)