NAME
|
postnote – send a note to a process or process group |
SYNOPSIS
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#include <u.h> #include <libc.h>
int postnote(int who, int pid, char *note) |
DESCRIPTION
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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
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/sys/src/libc/9sys/postnote.c |
SEE ALSO
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notify(2), intro(2), proc(3) |
DIAGNOSTICS
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Sets errstr. |