1 cfa37a7b 2004-04-10 devnull .TH POSTNOTE 3
 2 cfa37a7b 2004-04-10 devnull .SH NAME
 3 cfa37a7b 2004-04-10 devnull postnote \- send a note to a process or process group
 4 cfa37a7b 2004-04-10 devnull .SH SYNOPSIS
 5 cfa37a7b 2004-04-10 devnull .B #include <u.h>
 6 cfa37a7b 2004-04-10 devnull .br
 7 cfa37a7b 2004-04-10 devnull .B #include <libc.h>
 8 cfa37a7b 2004-04-10 devnull .PP
 9 cfa37a7b 2004-04-10 devnull .nf
10 cfa37a7b 2004-04-10 devnull .B
11 cfa37a7b 2004-04-10 devnull int	postnote(int who, int pid, char *note)
12 cfa37a7b 2004-04-10 devnull .fi
13 cfa37a7b 2004-04-10 devnull .SH DESCRIPTION
14 cfa37a7b 2004-04-10 devnull .I Postnote
15 cfa37a7b 2004-04-10 devnull sends a note to a process or process group.
16 cfa37a7b 2004-04-10 devnull If
17 cfa37a7b 2004-04-10 devnull .I who
18 cfa37a7b 2004-04-10 devnull is
19 cfa37a7b 2004-04-10 devnull .BR PNPROC ,
20 cfa37a7b 2004-04-10 devnull then
21 cfa37a7b 2004-04-10 devnull .I note
22 058b0118 2005-01-03 devnull is sent to the process with id
23 058b0118 2005-01-03 devnull .IR pid .
24 cfa37a7b 2004-04-10 devnull If
25 cfa37a7b 2004-04-10 devnull .I who
26 cfa37a7b 2004-04-10 devnull is
27 cfa37a7b 2004-04-10 devnull .BI PNGROUP , 
28 cfa37a7b 2004-04-10 devnull the note is delivered to the
29 881e5d1e 2008-07-21 t.lainson process group containing the process with id
30 881e5d1e 2008-07-21 t.lainson .IR pid .
31 cfa37a7b 2004-04-10 devnull For
32 cfa37a7b 2004-04-10 devnull .B PNGROUP
33 cfa37a7b 2004-04-10 devnull only, if the calling process is in the target group, the note is
34 cfa37a7b 2004-04-10 devnull .I not
35 cfa37a7b 2004-04-10 devnull delivered to that process.
36 cfa37a7b 2004-04-10 devnull .PP
37 881e5d1e 2008-07-21 t.lainson Returns zero if the write succeeds, otherwise \-1.
38 cfa37a7b 2004-04-10 devnull .SH SOURCE
39 c3674de4 2005-01-11 devnull .B \*9/src/lib9/postnote.c
40 cfa37a7b 2004-04-10 devnull .SH "SEE ALSO"
41 d32deab1 2020-08-16 rsc .MR notify (3) ,
42 d32deab1 2020-08-16 rsc .MR intro (3)
43 cfa37a7b 2004-04-10 devnull .SH DIAGNOSTICS
44 cfa37a7b 2004-04-10 devnull Sets
45 cfa37a7b 2004-04-10 devnull .IR errstr .