3 files changed, 58 insertions, 0 deletions
diff --git a/libbtrfsutil/stubs.c b/libbtrfsutil/stubs.c
new file mode 100644
index 00000000..9b9e037f
--- /dev/null
+++ b/libbtrfsutil/stubs.c
@@ -0,0 +1,35 @@
+/*
+ * This file is part of libbtrfsutil.
+ *
+ * libbtrfsutil is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libbtrfsutil 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libbtrfsutil.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if HAVE_REALLOCARRAY != 1
+
+#include <stdlib.h>
+#include <errno.h>
+
+void *reallocarray(void *ptr, size_t nmemb, size_t size)
+{
+	size_t res;
+
+	res = nmemb * size;
+	if (res < nmemb || res < size) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	return realloc(ptr, res);
+}
+
+#endif
diff --git a/libbtrfsutil/stubs.h b/libbtrfsutil/stubs.h
new file mode 100644
index 00000000..cb6d43ca
--- /dev/null
+++ b/libbtrfsutil/stubs.h
@@ -0,0 +1,22 @@
+/*
+ * This file is part of libbtrfsutil.
+ *
+ * libbtrfsutil is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libbtrfsutil 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libbtrfsutil.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LIBBTRFSUTIL_STUBS_H_
+
+void *reallocarray(void *ptr, size_t nmemb, size_t size);
+
+#endif
diff --git a/libbtrfsutil/subvolume.c b/libbtrfsutil/subvolume.c
index 965376e3..b9bb99f8 100644
--- a/libbtrfsutil/subvolume.c
+++ b/libbtrfsutil/subvolume.c
@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <sys/vfs.h>
 #include <linux/magic.h>
+#include "stubs.h"
 
 #include "btrfsutil_internal.h"