1 files changed, 73 insertions, 0 deletions
diff --git a/lib/alloc.c b/lib/alloc.c
new file mode 100644
index 0000000..962f45a
--- /dev/null
+++ b/lib/alloc.c
@@ -0,0 +1,73 @@
+/*
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
+ * SPDX-FileCopyrightText: 2023       , Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* Replacements for malloc and strdup with error checking.  Too trivial
+   to be worth copyrighting :-).  I did that because a lot of code used
+   malloc and strdup without checking for NULL pointer, and I like some
+   message better than a core dump...  --marekm
+
+   Yeh, but.  Remember that bailing out might leave the system in some
+   bizarre state.  You really want to put in error checking, then add
+   some back-out failure recovery code. -- jfh */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "alloc.h"
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include "defines.h"
+#include "prototypes.h"
+#include "shadowlog.h"
+
+
+extern inline void *xmalloc(size_t size);
+extern inline void *xmallocarray(size_t nmemb, size_t size);
+extern inline void *mallocarray(size_t nmemb, size_t size);
+extern inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
+extern inline char *xstrdup(const char *str);
+
+
+void *
+xcalloc(size_t nmemb, size_t size)
+{
+	void  *p;
+
+	p = calloc(nmemb, size);
+	if (p == NULL)
+		goto x;
+
+	return p;
+
+x:
+	fprintf(log_get_logfd(), _("%s: %s\n"),
+	        log_get_progname(), strerror(errno));
+	exit(13);
+}
+
+
+void *
+xreallocarray(void *p, size_t nmemb, size_t size)
+{
+	p = reallocarrayf(p, nmemb, size);
+	if (p == NULL)
+		goto x;
+
+	return p;
+
+x:
+	fprintf(log_get_logfd(), _("%s: %s\n"),
+	        log_get_progname(), strerror(errno));
+	exit(13);
+}