1.\" Copyright (c) 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)dev_mkdb.8 8.1 (Berkeley) 6/6/93 33.\" $NetBSD: dev_mkdb.8,v 1.4 1997/03/08 06:48:01 mikel Exp $ 34.\" 35.Dd June 6, 1993 36.Os 37.Dt DEV_MKDB 8 38.Sh NAME 39.Nm dev_mkdb 40.Nd create 41.Pa /dev 42database 43.Sh SYNOPSIS 44.Nm dev_mkdb 45.Sh DESCRIPTION 46The 47.Nm 48command creates a 49.Xr db 3 50hash access method database in 51.Dq Pa /var/run/dev.db 52which contains the names of all of the character and block special 53files in the 54.Dq Pa /dev 55directory, using the file type and the 56.Fa st_rdev 57field as the key. 58.Pp 59Keys are a structure containing a mode_t followed by a dev_t, 60with any padding zero'd out. 61The former is the type of the file (st_mode & S_IFMT), 62the latter is the st_rdev field. 63.Sh FILES 64.Bl -tag -width /var/run/dev.db -compact 65.It Pa /dev 66Device directory. 67.It Pa /var/run/dev.db 68Database file. 69.El 70.Sh SEE ALSO 71.Xr ps 1 , 72.Xr stat 2 , 73.Xr db 3 , 74.Xr devname 3 , 75.Xr kvm_nlist 3 , 76.Xr ttyname 3 , 77.Xr kvm_mkdb 8 78.Sh HISTORY 79The 80.Nm 81command appeared in 82.Bx 4.4 . 83