Add the following ACL editing functions:

  acl_add_perm, acl_clear_perms, acl_copy_entry, acl_create_entry,
  acl_delete_perm, acl_get_permset, acl_get_qualifier, acl_get_tag_type,
  acl_set_permset, acl_set_qualifier, acl_set_tag_type

This brings us within 4 functions of a full ACL editing library.

Reviewed by:	rwatson

1 files changed, 69 insertions, 0 deletions

diff --git a/lib/libc/posix1e/acl_copy.c b/lib/libc/posix1e/acl_copy.c
new file mode 100644
index 0000000..86a24cc
--- /dev/null
+++ b/lib/libc/posix1e/acl_copy.c
@@ -0,0 +1,69 @@
+/*
+ * 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_copy_entry() - copy the contents of ACL entry src_d to
+ * ACL entry dest_d
+ */
+int
+acl_copy_entry(acl_entry_t dest_d, acl_entry_t src_d)
+{
+
+	if (!src_d || !dest_d || (src_d == dest_d)) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	dest_d->ae_tag  = src_d->ae_tag;
+	dest_d->ae_id   = src_d->ae_id;
+	dest_d->ae_perm = src_d->ae_perm;
+
+	return 0;
+}
+
+ssize_t
+acl_copy_ext(void *buf_p, acl_t acl, ssize_t size)
+{
+
+	errno = ENOSYS;
+	return -1;
+}
+
+acl_t
+acl_copy_int(const void *buf_p)
+{
+
+	errno = ENOSYS;
+	return NULL;
+}