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diff --git a/include/signal.h b/include/signal.h
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+++ b/include/signal.h
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+/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/*
+ * ANSI Standard: 4.7 SIGNAL HANDLING <signal.h>
+ */
+
+#ifndef _SIGNAL_H
+#define _SIGNAL_H
+
+#include <features.h>
+#include <sys/types.h>
+#include <linux/signal.h>
+
+#ifndef SIGCLD
+#define SIGCLD SIGCHLD
+#endif
+
+/* SVR4 */
+#ifndef SA_RESETHAND
+#define SA_RESETHAND SA_ONESHOT
+#endif
+
+/* SVR4 */
+#ifndef SA_NODEFER
+#define SA_NODEFER SA_NOMASK
+#endif
+
+typedef int sig_atomic_t;
+
+typedef __sighandler_t SignalHandler;
+
+#ifndef BADSIG
+#define BADSIG SIG_ERR
+#endif
+
+/* The Interviews version also has these ... */
+
+#define SignalBad ((SignalHandler)-1)
+#define SignalDefault ((SignalHandler)0)
+#define SignalIgnore ((SignalHandler)1)
+
+__BEGIN_DECLS
+
+extern __const char * __const sys_siglist[];
+extern __const char * __const _sys_siglist[];
+
+extern __sighandler_t
+ signal __P ((int __sig, __sighandler_t));
+extern __sighandler_t
+ __signal __P ((int __sig, __sighandler_t, int flags));
+extern int raise __P ((int __sig));
+extern int __kill __P ((pid_t __pid, int __sig));
+extern int kill __P ((pid_t __pid, int __sig));
+extern int killpg __P ((int __pgrp, int __sig));
+extern int sigaddset __P ((sigset_t *__mask, int __sig));
+extern int sigdelset __P ((sigset_t *__mask, int __sig));
+extern int sigemptyset __P ((sigset_t *__mask));
+extern int sigfillset __P ((sigset_t *__mask));
+extern int sigismember __P ((__const sigset_t *__mask, int __sig));
+extern int sigpending __P ((sigset_t *__set));
+
+extern int __sigprocmask __P ((int __how, __const sigset_t *__set,
+ sigset_t *__oldset));
+extern int sigprocmask __P ((int __how, __const sigset_t *__set,
+ sigset_t *__oldset));
+
+extern int sigsuspend __P ((__const sigset_t *sigmask));
+
+extern int __sigaction __P ((int __sig, struct sigaction *__act,
+ struct sigaction *__oldact));
+extern int sigaction __P ((int __sig, struct sigaction *__act,
+ struct sigaction *__oldact));
+
+#define __sigemptyset(set) ((*(set) = 0L), 0)
+#define __sigfillset(set) ((*(set) = -1L), 0)
+#define __sigaddset(set, sig) ((*(set) |= __sigmask (sig)), 0)
+#define __sigdelset(set, sig) ((*(set) &= ~__sigmask (sig)), 0)
+#define __sigismember(set, sig) ((*(set) & __sigmask (sig)) ? 1 : 0)
+
+
+#if 1
+#define sigemptyset __sigemptyset
+#define sigfillset __sigfillset
+
+/* We don't do that any more since it causes problems due to
+ * "sig" > _NSIG and "sig" < 1. It isn't worth the touble to make
+ * them inline and static. Use __sigxxxxx if you want speed with
+ * correct "sig".
+ */
+#if 1
+#define sigaddset __sigaddset
+#define sigdelset __sigdelset
+#define sigismember __sigismember
+#endif
+
+#endif
+
+
+/* Return a mask that includes SIG only. */
+#define __sigmask(sig) (1 << ((sig) - 1))
+
+extern int __sigsetmask __P ((int __mask));
+extern int __siggetmask __P ((void));
+extern int __sigblock __P ((int __mask));
+extern int __sigpause __P ((int __mask));
+
+#ifdef __USE_SVID
+/* SVID names for the same things. */
+extern __sighandler_t ssignal __P ((int __sig, __sighandler_t __handler));
+extern int gsignal __P ((int __sig));
+
+#endif /* Use SVID. */
+
+/* BSD */
+#ifdef __USE_BSD
+#define sigmask __sigmask
+
+extern int sigblock __P ((int __mask));
+extern int sigpause __P ((int __mask));
+extern int sigsetmask __P ((int __mask));
+extern int siggetmask __P ((void));
+extern void psignal __P ((int __sig, __const char *__str));
+
+extern int siginterrupt __P ((int __sig, int __flag));
+
+/* The `sig' bit is set if the interrupt on it
+ * is enabled via siginterrupt (). */
+extern sigset_t _sigintr;
+
+#endif /* Use BSD. */
+
+#ifdef __USE_BSD_SIGNAL
+
+extern __sighandler_t
+ __bsd_signal __P ((int __sig, __sighandler_t));
+#define signal __bsd_signal
+
+#endif /* __USE_BSD_SIGNAL */
+
+__END_DECLS
+
+#if _MIT_POSIX_THREADS
+#define __SIGFILLSET 0xffffffff
+#define __SIGEMPTYSET 0
+#define __SIGADDSET(s,n) ((*s) |= (1 << ((n) - 1)))
+#define __SIGDELSET(s,n) ((*s) &= ~(1 << ((n) - 1)))
+#define __SIGISMEMBER(s,n) ((*s) & (1 << ((n) - 1)))
+#endif
+
+#endif /* _SIGNAL_H */