1 files changed, 55 insertions, 0 deletions
diff --git a/rdns_scan/zmap4rdns/lib/xalloc.c b/rdns_scan/zmap4rdns/lib/xalloc.c
new file mode 100644
index 0000000..6542e74
--- /dev/null
+++ b/rdns_scan/zmap4rdns/lib/xalloc.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2021 Regents of the University of Michigan
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "xalloc.h"
+#include "logger.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static void die() __attribute__((noreturn));
+
+void *xcalloc(size_t count, size_t size)
+{
+	void *res = calloc(count, size);
+	if (res == NULL) {
+		die();
+	}
+	return res;
+}
+
+void xfree(void *ptr) { free(ptr); }
+
+void *xmalloc(size_t size)
+{
+	void *res = malloc(size);
+	if (res == NULL) {
+		die();
+	}
+	memset(res, 0, size);
+	return res;
+}
+
+void *xrealloc(void *ptr, size_t size)
+{
+	void *res = realloc(ptr, size);
+	if (res == NULL) {
+		die();
+	}
+	return res;
+}
+
+void die() { log_fatal("zmap", "Out of memory"); }