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Diffstat (limited to 'usr.sbin/ppp/sig.c')
-rw-r--r-- | usr.sbin/ppp/sig.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/usr.sbin/ppp/sig.c b/usr.sbin/ppp/sig.c deleted file mode 100644 index a42194b..0000000 --- a/usr.sbin/ppp/sig.c +++ /dev/null @@ -1,119 +0,0 @@ -/*- - * Copyright (c) 1997 - 1999, 2001 Brian Somers <brian@Awfulhak.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/types.h> - -#include <signal.h> - -#include "log.h" -#include "sig.h" - -static int caused[NSIG]; /* An array of pending signals */ -static int necessary; /* Anything set ? */ -static sig_type handler[NSIG]; /* all start at SIG_DFL */ - - -/* - * 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 -signal_recorder(int sig) -{ - caused[sig - 1]++; - necessary = 1; -} - - -/* - * Set up signal_recorder to handle the given sig and record ``fn'' as - * 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_signal(int sig, sig_type fn) -{ - sig_type Result; - - if (sig <= 0 || sig > NSIG) { - /* Oops - we must be a bit out of date (too many sigs ?) */ - log_Printf(LogALERT, "Eeek! %s:%d: I must be out of date!\n", - __FILE__, __LINE__); - return signal(sig, fn); - } - Result = handler[sig - 1]; - if (fn == SIG_DFL || fn == SIG_IGN) { - signal(sig, fn); - handler[sig - 1] = (sig_type) 0; - } else { - handler[sig - 1] = fn; - signal(sig, signal_recorder); - } - caused[sig - 1] = 0; - return Result; -} - - -/* - * 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 -sig_Handle() -{ - int sig; - int got; - int result; - - result = 0; - if (necessary) { - /* We've *probably* got something in `caused' set */ - necessary = 0; - /* `necessary' might go back to 1 while we're in here.... */ - do { - got = 0; - for (sig = 0; sig < NSIG; sig++) - if (caused[sig]) { - caused[sig]--; - got++; - result++; - (*handler[sig])(sig + 1); - } - } while (got); - } - - return result; -} |