devd. A daemon that hooks into the kernel's /dev/devctl to produce

arbitrary commands when devices come and go in the device tree (which is
different than the /dev directory).

This is an initial version.  Much of the planned power isn't here.
Instead of doing the full matching, we always run /etc/devd-generic.
/etc/devd.generic will go away at some point, I think.

I'm committing it in this early state so I can start getting feedback
from early adapters.

Approved by: re

1 files changed, 133 insertions, 0 deletions

diff --git a/sbin/devd/devd.conf.5 b/sbin/devd/devd.conf.5
new file mode 100644
index 0000000..10c0e5d
--- /dev/null
+++ b/sbin/devd/devd.conf.5
@@ -0,0 +1,133 @@
+.\"
+.\" Copyright (c) 2002 M. Warner Losh
+.\" 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. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" 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.
+.\"
+.\"	$FreeBSD$
+.\"
+.\" The section on comments was taken from named.conf.5, which has the
+.\" following copyright:
+.\" Copyright (c) 1999-2000 by Internet Software Consortium
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+.\" ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+.\" CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+.\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+.\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+.\" SOFTWARE.
+.Dd October 17, 2002
+.Dt DEVD.CONF 5
+.Os
+.Sh NAME
+.Nm devd.conf
+.Nd configuration file for
+.Xr devdd 8
+.Sh OVERVIEW
+.Ss General Syntax
+A
+.Xr devd 8 
+configuration consists of two general features, statements
+and comments.
+All statements end with a semicolon.
+Many statements can contain substatements, which are each also
+terminated with a semicolon.
+.Pp
+The following statements are supported:
+.Bl -tag -width 0n
+.It Ic options
+specifies various options and parameters for the operation of
+.Xr devd 8 .
+.It Ic attach
+specifies various matching criteria and actions to perform when
+a newly attached device matches said criteria.
+.It Ic detach
+specifies various matching criteria and actions to perform when
+a newly attached device matches said criteria.
+.It Ic nomatch
+specifies various matching criteria and actions to perform when
+no device driver currently loaded in the kernel claims a (new)
+device.
+.El
+.Pp
+Statements may occur in any order in the config file, and may be
+repated as often as required.
+Further details on the syntax and meaning of each statement, and their
+substatements is explained below.
+.Pp
+Comments may appear anywhere that whitespace may appear in a BIND
+configuration file.  To appeal to programmers of all kinds, they can
+be written in C, C++, or shell/perl constructs.
+.Pp
+C-style comments start with the two characters
+.Li /*
+(slash, star) and end with
+.Li */
+(star, slash).
+Because they are completely delimited with these characters,
+they can be used to comment only a portion of a line or to span
+multiple lines.
+.Pp
+C-style comments cannot be nested.  For example, the following is
+not valid because the entire comment ends with the first
+.Li */ :
+.Bd -literal -offset indent
+/* This is the start of a comment.
+   This is still part of the comment.
+/* This is an incorrect attempt at nesting a comment. */
+   This is no longer in any comment. */
+.Ed
+.Pp
+C++-style comments start with the two characters
+.Li //
+(slash, slash) and continue to the end of the physical line.
+They cannot be continued across multiple physical lines; to have
+one logical comment span multiple lines, each line must use the
+.Li //
+pair.  For example:
+.Bd -literal -offset indent
+// This is the start of a comment.  The next line
+// is a new comment, even though it is logically
+// part of the previous comment.
+.Ed
+.Pp
+.Em WARNING :
+you cannot use the
+.Li ;
+(semicolon) character to start a comment such as you would in a zone
+file.  The semicolon indicates the end of a configuration statement,
+so whatever follows it will be interpreted as the start of the next
+statement.
+.Sh FILES
+.Bl -tag -width 0n -compact
+.It Pa /etc/devd.conf
+The
+.Nm devd
+configuration file.
+.El
+.Sh SEE ALSO
+.Xr devd 8