1 files changed, 0 insertions, 90 deletions
diff --git a/setsignal.c b/setsignal.c
deleted file mode 100644
index 4d93cebf752f..000000000000
--- a/setsignal.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (c) 1997
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that: (1) source code distributions
- * retain the above copyright notice and this paragraph in its entirety, (2)
- * distributions including binary code include the above copyright notice and
- * this paragraph in its entirety in the documentation or other materials
- * provided with the distribution, and (3) all advertising materials mentioning
- * features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
- * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
- * the University nor the names of its contributors may be used to endorse
- * or promote products derived from this software without specific prior
- * written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <netdissect-stdinc.h>
-
-#include <signal.h>
-#ifdef HAVE_SIGACTION
-#include <string.h>
-#endif
-
-#ifdef HAVE_OS_PROTO_H
-#include "os-proto.h"
-#endif
-
-#include "setsignal.h"
-
-/*
- * An OS-independent signal() with, whenever possible, partial BSD
- * semantics, i.e. the signal handler is restored following service
- * of the signal, but system calls are *not* restarted, so that if
- * "pcap_breakloop()" is called in a signal handler in a live capture,
- * the read/recvfrom/whatever in the live capture doesn't get restarted,
- * it returns -1 and sets "errno" to EINTR, so we can break out of the
- * live capture loop.
- *
- * We use "sigaction()" if available.  We don't specify that the signal
- * should restart system calls, so that should always do what we want.
- *
- * Otherwise, if "sigset()" is available, it probably has BSD semantics
- * while "signal()" has traditional semantics, so we use "sigset()"; it
- * might cause system calls to be restarted for the signal, however.
- * I don't know whether, in any systems where it did cause system calls to
- * be restarted, there was a way to ask it not to do so; there may no
- * longer be any interesting systems without "sigaction()", however,
- * and, if there are, they might have "sigvec()" with SV_INTERRUPT
- * (which I think first appeared in 4.3BSD).
- *
- * Otherwise, we use "signal()" - which means we might get traditional
- * semantics, wherein system calls don't get restarted *but* the
- * signal handler is reset to SIG_DFL and the signal is not blocked,
- * so that a subsequent signal would kill the process immediately.
- *
- * Did I mention that signals suck?  At least in POSIX-compliant systems
- * they suck far less, as those systems have "sigaction()".
- */
-RETSIGTYPE
-(*setsignal (int sig, RETSIGTYPE (*func)(int)))(int)
-{
-#ifdef HAVE_SIGACTION
-	struct sigaction old, new;
-
-	memset(&new, 0, sizeof(new));
-	new.sa_handler = func;
-	if (sig == SIGCHLD)
-		new.sa_flags = SA_RESTART;
-	if (sigaction(sig, &new, &old) < 0)
-		return (SIG_ERR);
-	return (old.sa_handler);
-
-#else
-#ifdef HAVE_SIGSET
-	return (sigset(sig, func));
-#else
-	return (signal(sig, func));
-#endif
-#endif
-}
-