postnote.3 (743B)
1 .TH POSTNOTE 3 2 .SH NAME 3 postnote \- send a note to a process or process group 4 .SH SYNOPSIS 5 .B #include <u.h> 6 .br 7 .B #include <libc.h> 8 .PP 9 .nf 10 .B 11 int postnote(int who, int pid, char *note) 12 .fi 13 .SH DESCRIPTION 14 .I Postnote 15 sends a note to a process or process group. 16 If 17 .I who 18 is 19 .BR PNPROC , 20 then 21 .I note 22 is sent to the process with id 23 .IR pid . 24 If 25 .I who 26 is 27 .BI PNGROUP , 28 the note is delivered to the 29 process group containing the process with id 30 .IR pid . 31 For 32 .B PNGROUP 33 only, if the calling process is in the target group, the note is 34 .I not 35 delivered to that process. 36 .PP 37 Returns zero if the write succeeds, otherwise \-1. 38 .SH SOURCE 39 .B \*9/src/lib9/postnote.c 40 .SH "SEE ALSO" 41 .MR notify (3) , 42 .MR intro (3) 43 .SH DIAGNOSTICS 44 Sets 45 .IR errstr .