POSTNOTE(3) POSTNOTE(3)
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 sent to the process with id pid. If
who is PNGROUP, the note is delivered to the process group
containing the process with id pid. For PNGROUP only, if the
calling process is in the target group, the note is not
delivered to that process.
Returns zero if the write succeeds, otherwise -1.
SOURCE
/src/lib9/postnote.c
SEE ALSO
notify(3), intro(3)
DIAGNOSTICS
Sets errstr.