1 files changed, 52 insertions, 0 deletions
diff --git a/lib/libc/posix1e/acl_cmp_np.c b/lib/libc/posix1e/acl_cmp_np.c
new file mode 100644
index 000000000000..f7ee9c235a04
--- /dev/null
+++ b/lib/libc/posix1e/acl_cmp_np.c
@@ -0,0 +1,52 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021 Gleb Popov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * acl_cmp_np: Compare two ACL's.
+ */
+
+#include <sys/acl.h>
+#include <sys/errno.h>
+
+#include "acl_support.h"
+
+/*
+ * returns 0 if acl_t's are identical, 1 otherwise
+ */
+int
+acl_cmp_np(acl_t acl1, acl_t acl2)
+{
+	if (acl1 == NULL || acl2 == NULL) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	if (_acl_brand(acl1) != _acl_brand(acl2))
+		return (1);
+
+	return (_acl_differs(acl1, acl2));
+}