92 lines
2.8 KiB
Groff
92 lines
2.8 KiB
Groff
.\" Copyright (c) 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)dev_mkdb.8 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd November 18, 2001
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.Os
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.Dt DEV_MKDB 8
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.Sh NAME
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.Nm dev_mkdb
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.Nd create
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.Pa /dev
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database
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.Sh SYNOPSIS
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.Nm
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.Op Fl f Ar file
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.Op Ar directory
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.Sh DESCRIPTION
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The
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.Nm
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utility creates a
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.Xr db 3
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hash access method database in
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.Ar file
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.Pa ( /var/run/dev.db
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by default)
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which contains the names of all of the character and block special
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files in
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.Ar directory
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.Pa ( /dev
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by default), using the file type and the
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.Fa st_rdev
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field as the key.
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.Pp
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Keys are a structure containing a
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.Vt mode_t
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followed by a
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.Vt dev_t ,
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with any padding zero'd out.
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The former is the type of the file
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.Va ( st_mode Li & Dv S_IFMT ) ,
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the latter is the
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.Va st_rdev
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field.
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.Sh FILES
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.Bl -tag -width ".Pa /var/run/dev.db" -compact
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.It Pa /dev
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default device directory
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.It Pa /var/run/dev.db
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default database file
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.El
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.Sh SEE ALSO
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.Xr ps 1 ,
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.Xr stat 2 ,
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.Xr db 3 ,
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.Xr devname 3 ,
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.Xr ttyname 3
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.Sh HISTORY
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The
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.Nm
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utility appeared in
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.Bx 4.4 .
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