NAME

postnote − send a note to a process or process group

SYNOPSIS

intpostnote(int pid, char ∗note)

DESCRIPTION

­Postnote sends a note to a process or process group.  If ­pid is positive, ­note is written to /proc/pid/note. If it is negative, the note is delivered to the process group by writing ­note to /proc/−pid/notepg.

If the write is successful, zero is returned.  Otherwise −1 is returned. 

SEE ALSO

notify(2), intro(2), proc(3)

DIAGNOSTICS

Sets ­errstr. 

Plan 9  —  January 03, 1993