POSTNOTE(2) 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.