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diff --git a/sys/fs/autofs/autofs_ioctl.h b/sys/fs/autofs/autofs_ioctl.h
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+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Edward Tomasz Napierala under sponsorship
+ * from the FreeBSD Foundation.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef AUTOFS_IOCTL_H
+#define AUTOFS_IOCTL_H
+
+#define AUTOFS_PATH "/dev/autofs"
+
+struct autofs_daemon_request {
+ /*
+ * Request identifier.
+ */
+ int adr_id;
+
+ /*
+ * The "from" field, containing map name. For example,
+ * when accessing '/net/192.168.1.3/tank/vm/', that would
+ * be '-hosts'.
+ */
+ char adr_from[MAXPATHLEN];
+
+ /*
+ * Full path to the node being looked up; for requests that result
+ * in actual mount it is the full mount path.
+ */
+ char adr_path[MAXPATHLEN];
+
+ /*
+ * Prefix, which is basically the mountpoint from auto_master(5).
+ * In example above that would be "/net"; for direct maps it is "/".
+ */
+ char adr_prefix[MAXPATHLEN];
+
+ /*
+ * Map key, also used as command argument for dynamic maps; in example
+ * above that would be '192.168.1.3'.
+ */
+ char adr_key[MAXPATHLEN];
+
+ /*
+ * Mount options from auto_master(5).
+ */
+ char adr_options[MAXPATHLEN];
+};
+
+struct autofs_daemon_done {
+ /*
+ * Identifier, copied from adr_id.
+ */
+ int add_id;
+
+ /*
+ * Error number, possibly returned to userland.
+ */
+ int add_error;
+};
+
+#define AUTOFSREQUEST _IOR('I', 0x01, struct autofs_daemon_request)
+#define AUTOFSDONE _IOW('I', 0x02, struct autofs_daemon_done)
+
+#endif /* !AUTOFS_IOCTL_H */
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