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cap_mkdb.c
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Editing: cap_mkdb.1
.\" Copyright (c) 1992, 1993 .\" The Regents of the University of California. 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. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. .\" .\" @(#)cap_mkdb.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" .Dd February 22, 2005 .Dt CAP_MKDB 1 .Os .Sh NAME .Nm cap_mkdb .Nd create capability database .Sh SYNOPSIS .Nm .Op Fl b | l .Op Fl v .Op Fl f Ar outfile .Ar .Sh DESCRIPTION The .Nm utility builds a hashed database out of the .Xr getcap 3 logical database constructed by the concatenation of the specified files. .Pp The database is named by the basename of the first file argument and the string .Dq .db . The .Xr getcap 3 routines can access the database in this form much more quickly than they can the original text file(s). .Pp The ``tc'' capabilities of the records are expanded before the record is stored into the database. .Pp The following options are available: .Bl -tag -width indent .It Fl b Use big-endian byte order for database metadata. .It Fl f Ar outfile Specify a different database basename. .It Fl l Use little-endian byte order for database metadata. .It Fl v Print out the number of capability records in the database. .El .Pp The .Fl b and .Fl l flags are mutually exclusive. The default byte ordering is the current host order. .Sh FORMAT Each record is stored in the database using two different types of keys. .Pp The first type is a key which consists of the first capability of the record (not including the trailing colon (``:'')) with a data field consisting of a special byte followed by the rest of the record. The special byte is either a 0 or 1, where a 0 means that the record is okay, and a 1 means that there was a ``tc'' capability in the record that could not be expanded. .Pp The second type is a key which consists of one of the names from the first capability of the record with a data field consisting a special byte followed by the first capability of the record. The special byte is a 2. .Pp In normal operation names are looked up in the database, resulting in a key/data pair of the second type. The data field of this key/data pair is used to look up a key/data pair of the first type which has the real data associated with the name. .Sh EXIT STATUS .Ex -std .Sh SEE ALSO .Xr dbopen 3 , .Xr getcap 3 , .Xr termcap 5
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