MFC r280849,280915-280916,281015-281016,282097,282408,282415,283542,

     284864,285169-285170,285435:

ntp 4.2.8p3.

Relnotes:	yes
Approved by:	re (?)

1 files changed, 139 insertions, 0 deletions

diff --git a/contrib/ntp/lib/isc/assertions.c b/contrib/ntp/lib/isc/assertions.c
new file mode 100644
index 0000000..31c4fe7
--- /dev/null
+++ b/contrib/ntp/lib/isc/assertions.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2004, 2005, 2007-2009  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1997-2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: assertions.c,v 1.26 2009/09/29 15:06:07 fdupont Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <isc/assertions.h>
+#include <isc/backtrace.h>
+#include <isc/msgs.h>
+#include <isc/result.h>
+
+/*
+ * The maximum number of stack frames to dump on assertion failure.
+ */
+#ifndef BACKTRACE_MAXFRAME
+#define BACKTRACE_MAXFRAME 128
+#endif
+
+/*%
+ * Forward.
+ */
+static void
+default_callback(const char *, int, isc_assertiontype_t, const char *);
+
+static isc_assertioncallback_t isc_assertion_failed_cb = default_callback;
+
+/*%
+ * Public.
+ */
+
+/*% assertion failed handler */
+/* coverity[+kill] */
+void
+isc_assertion_failed(const char *file, int line, isc_assertiontype_t type,
+		     const char *cond)
+{
+	isc_assertion_failed_cb(file, line, type, cond);
+	abort();
+	/* NOTREACHED */
+}
+
+/*% Set callback. */
+void
+isc_assertion_setcallback(isc_assertioncallback_t cb) {
+	if (cb == NULL)
+		isc_assertion_failed_cb = default_callback;
+	else
+		isc_assertion_failed_cb = cb;
+}
+
+/*% Type to Text */
+const char *
+isc_assertion_typetotext(isc_assertiontype_t type) {
+	const char *result;
+
+	/*
+	 * These strings have purposefully not been internationalized
+	 * because they are considered to essentially be keywords of
+	 * the ISC development environment.
+	 */
+	switch (type) {
+	case isc_assertiontype_require:
+		result = "REQUIRE";
+		break;
+	case isc_assertiontype_ensure:
+		result = "ENSURE";
+		break;
+	case isc_assertiontype_insist:
+		result = "INSIST";
+		break;
+	case isc_assertiontype_invariant:
+		result = "INVARIANT";
+		break;
+	default:
+		result = NULL;
+	}
+	return (result);
+}
+
+/*
+ * Private.
+ */
+
+static void
+default_callback(const char *file, int line, isc_assertiontype_t type,
+		 const char *cond)
+{
+	void *tracebuf[BACKTRACE_MAXFRAME];
+	int i, nframes;
+	const char *logsuffix = ".";
+	const char *fname;
+	isc_result_t result;
+
+	result = isc_backtrace_gettrace(tracebuf, BACKTRACE_MAXFRAME, &nframes);
+		if (result == ISC_R_SUCCESS && nframes > 0)
+			logsuffix = ", back trace";
+
+	fprintf(stderr, "%s:%d: %s(%s) %s%s\n",
+		file, line, isc_assertion_typetotext(type), cond,
+		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
+			       ISC_MSG_FAILED, "failed"), logsuffix);
+	if (result == ISC_R_SUCCESS) {
+		for (i = 0; i < nframes; i++) {
+			unsigned long offset;
+
+			fname = NULL;
+			result = isc_backtrace_getsymbol(tracebuf[i], &fname,
+							 &offset);
+			if (result == ISC_R_SUCCESS) {
+				fprintf(stderr, "#%d %p in %s()+0x%lx\n", i,
+					tracebuf[i], fname, offset);
+			} else {
+				fprintf(stderr, "#%d %p in ??\n", i,
+					tracebuf[i]);
+			}
+		}
+	}
+	fflush(stderr);
+}