2004-04-10 18:53:55 +00:00
|
|
|
.TH POSTNOTE 3
|
|
|
|
|
.SH NAME
|
|
|
|
|
postnote \- send a note to a process or process group
|
|
|
|
|
.SH SYNOPSIS
|
|
|
|
|
.B #include <u.h>
|
|
|
|
|
.br
|
|
|
|
|
.B #include <libc.h>
|
|
|
|
|
.PP
|
|
|
|
|
.nf
|
|
|
|
|
.B
|
|
|
|
|
int postnote(int who, int pid, char *note)
|
|
|
|
|
.fi
|
|
|
|
|
.SH DESCRIPTION
|
|
|
|
|
.I Postnote
|
|
|
|
|
sends a note to a process or process group.
|
|
|
|
|
If
|
|
|
|
|
.I who
|
|
|
|
|
is
|
|
|
|
|
.BR PNPROC ,
|
|
|
|
|
then
|
|
|
|
|
.I note
|
2005-01-03 06:40:20 +00:00
|
|
|
is sent to the process with id
|
|
|
|
|
.IR pid .
|
2004-04-10 18:53:55 +00:00
|
|
|
If
|
|
|
|
|
.I who
|
|
|
|
|
is
|
|
|
|
|
.BI PNGROUP ,
|
|
|
|
|
the note is delivered to the
|
2005-01-03 06:40:20 +00:00
|
|
|
process group which has the process with id
|
|
|
|
|
.I pid
|
|
|
|
|
as a member.
|
2004-04-10 18:53:55 +00:00
|
|
|
For
|
|
|
|
|
.B PNGROUP
|
|
|
|
|
only, if the calling process is in the target group, the note is
|
|
|
|
|
.I not
|
|
|
|
|
delivered to that process.
|
|
|
|
|
.PP
|
|
|
|
|
If the write is successful, zero is returned.
|
|
|
|
|
Otherwise \-1 is returned.
|
|
|
|
|
.SH SOURCE
|
2005-01-11 17:37:33 +00:00
|
|
|
.B \*9/src/lib9/postnote.c
|
2004-04-10 18:53:55 +00:00
|
|
|
.SH "SEE ALSO"
|
2004-04-11 03:42:27 +00:00
|
|
|
.IR notify (3),
|
2005-01-03 06:40:20 +00:00
|
|
|
.IR intro (3)
|
2004-04-10 18:53:55 +00:00
|
|
|
.SH DIAGNOSTICS
|
|
|
|
|
Sets
|
|
|
|
|
.IR errstr .
|
