Introduce the DEVFS "rule" subsystem. DEVFS rules permit the

administrator to define certain properties of new devfs nodes before
they become visible to the userland.  Both static (e.g., /dev/speaker)
and dynamic (e.g., /dev/bpf*, some removable devices) nodes are
supported.  Each DEVFS mount may have a different ruleset assigned to
it, permitting different policies to be implemented for things like
jails.

Approved by:	phk

1 files changed, 55 insertions, 0 deletions

diff --git a/sbin/devfs/extern.h b/sbin/devfs/extern.h
new file mode 100644
index 0000000..9814b15
--- /dev/null
+++ b/sbin/devfs/extern.h
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 2002 Dima Dorfman.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __DEVFS_H__
+#define	__DEVFS_H__
+
+#include <fs/devfs/devfs.h>
+
+struct intstr {
+	const char *s;
+	int i;
+};
+
+typedef int (command_t)(int, char **);
+typedef struct cmd ctbl_t[];
+struct cmd {
+	const char *name;
+	command_t *handler;
+};
+
+command_t rule_main, ruleset_main;
+
+int atonum(const char *, uint16_t *);
+int eatoi(const char *);
+uint16_t eatonum(const char *);
+void usage(void) __dead2;
+
+extern int mpfd;		/* Mount-point file descriptor. */
+
+#endif /* !__DEVFS_H__ */