1 files changed, 50 insertions, 0 deletions

diff --git a/lib/libc/posix1e/cap_cmp.c b/lib/libc/posix1e/cap_cmp.c
new file mode 100644
index 000000000000..77bb6ca5a24e
--- /dev/null
+++ b/lib/libc/posix1e/cap_cmp.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2001 by Thomas Moestl <tmm@FreeBSD.org>.  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 AUTHORS ``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 REGENTS 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Capabiltiy comparison functions cap_subset, cap_equal.
+ */
+
+/* define this to pull in the cap macros the kernel uses */
+#include <sys/types.h>
+#define _CAPABILITY_NEEDMACROS
+#include <sys/capability.h>
+#undef _CAPABILITY_NEEDMACROS
+
+int
+cap_subset_np(cap_t c1, cap_t c2)
+{
+	return CAP_SUBSET(*c1, *c2);
+}
+
+int
+cap_equal_np(cap_t c1, cap_t c2)
+{
+	return  c1->c_effective == c2->c_effective &&
+	    c1->c_permitted == c2->c_permitted &&
+	    c1->c_inheritable == c2->c_inheritable;
+}
+