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This commit is contained in:
brian 2001-08-20 10:25:23 +00:00
parent 5329ff37f2
commit c400ea8f0c
1 changed files with 21 additions and 9 deletions
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30
usr.sbin/ppp/sig.c
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@ -1,5 +1,5 @@
/*- /*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> * Copyright (c) 1997 - 1999, 2001 Brian Somers <brian@Awfulhak.org>
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -38,8 +38,14 @@ static int necessary; /* Anything set ? */
static sig_type handler[NSIG]; /* all start at SIG_DFL */ static sig_type handler[NSIG]; /* all start at SIG_DFL */
/* Record a signal in the "caused" array */ /*
* Record a signal in the "caused" array
*
* This function is the only thing actually called in signal context. It
* records that a signal has been caused and that sig_Handle() should be
* called (in non-signal context) as soon as possible to process that
* signal.
*/
static void static void
signal_recorder(int sig) signal_recorder(int sig)
{ {
@ -49,10 +55,11 @@ signal_recorder(int sig)
/* /*
* Set up signal_recorder, and record handler as the function to ultimately * Set up signal_recorder to handle the given sig and record ``fn'' as
* call in handle_signal() * the function to ultimately call in sig_Handle(). ``fn'' will not be
*/ * called in signal context (as sig_Handle() is not called in signal
* context).
*/
sig_type sig_type
sig_signal(int sig, sig_type fn) sig_signal(int sig, sig_type fn)
{ {
@ -77,8 +84,13 @@ sig_signal(int sig, sig_type fn)
} }
/* Call the handlers for any pending signals */ /*
* Call the handlers for any pending signals
*
* This function is called from a non-signal context - in fact, it's
* called every time select() in DoLoop() returns - just in case
* select() returned due to a signal being recorded by signal_recorder().
*/
int int
sig_Handle() sig_Handle()
{ {