81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* This software is Copyright 1997 by Stan Barber.
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*
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* Permission is hereby granted to copy, reproduce, redistribute or otherwise
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* use this software as long as: there is no monetary profit gained
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* specifically from the use or reproduction of this software, it is not
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* sold, rented, traded or otherwise marketed, and this copyright notice is
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* included prominently in any copy made.
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*
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* The author make no claims as to the fitness or correctness of this software
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* for any use whatsoever, and it is provided as is. Any use of this software
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* is at the user's own risk.
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*/
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#ifndef lint
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static char * rcsid = "$Id: sigfix.c,v 1.1 1999/06/30 17:19:37 he Exp $";
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#endif
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#include "config.h"
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/*
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* delay_signaling(), enable_signaling - delay signal delivery for a while
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*
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* Original Author: Wietse Venema with small changes by Dave Kinchlea and
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* Stan Barber
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*/
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/*
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* Some folks (notably those who do Linux hacking) say this fix is needed.
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* Others (notably the FreeBSD and BSDI folks) say if isn't.
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* I am making it possible to include of exclude it.
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* Just define NEED_SIGFIX and you get it.
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*/
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#ifdef NEED_SIGFIX
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#include <sys/types.h>
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#include <sys/signal.h>
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#include <syslog.h>
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static sigset_t saved_sigmask;
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sigset_t block_sigmask; /* used in ftpd.c */
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static int delaying;
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static int init_done;
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#endif
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/* enable_signaling - deliver delayed signals and disable signal delay */
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#ifdef __STDC__
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int enable_signaling(void)
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#else
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int enable_signaling()
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#endif
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{
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#ifdef NEED_SIGFIX
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if (delaying != 0) {
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delaying = 0;
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if (sigprocmask(SIG_SETMASK, &saved_sigmask, (sigset_t *) 0) < 0) {
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syslog(LOG_ERR, "sigprocmask: %m");
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return (-1);
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}
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}
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#endif
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return (0);
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}
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/* delay_signaling - save signal mask and block all signals */
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#ifdef __STDC__
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int delay_signaling(void)
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#else
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int delay_signaling()
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#endif
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{
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#ifdef NEED_SIGFIX
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if (delaying == 0) {
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delaying = 1;
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if (sigprocmask(SIG_BLOCK, &block_sigmask, &saved_sigmask) < 0) {
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syslog(LOG_ERR, "sigprocmask: %m");
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return (-1);
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}
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}
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#endif
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return (0);
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}
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