1 files changed, 87 insertions, 0 deletions
diff --git a/lib/libposix1e/acl_perm.c b/lib/libposix1e/acl_perm.c
new file mode 100644
index 0000000..e314810
--- /dev/null
+++ b/lib/libposix1e/acl_perm.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2001 Chris D. Faulhaber
+ * 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 THE VOICES IN HIS HEAD 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/acl.h>
+
+#include <errno.h>
+#include <string.h>
+
+/*
+ * acl_add_perm() adds the permission contained in perm to the
+ * permission set permset_d
+ */
+int
+acl_add_perm(acl_permset_t permset_d, acl_perm_t perm)
+{
+
+	if (!permset_d || (perm & !(ACL_PERM_BITS))) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	*permset_d |= perm;
+
+	return 0;
+}
+
+/*
+ * acl_clear_perm() clears all permisions from the permission
+ * set permset_d
+ */
+int
+acl_clear_perm(acl_permset_t permset_d)
+{
+
+	if (!permset_d) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	*permset_d = 0;
+
+	return 0;
+}
+
+/*
+ * acl_delete_perm() removes the permission in perm from the
+ * permission set permset_d
+ */
+int
+acl_delete_perm(acl_permset_t permset_d, acl_perm_t perm)
+{
+
+	if (!permset_d) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	*permset_d &= ~(perm & ACL_PERM_BITS);
+
+	return 0;
+}