NetBSD/usr.bin/cap_mkdb/cap_mkdb.1

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.\"	@(#)cap_mkdb.1	8.1 (Berkeley) 6/6/93
.\"
.Dd April 5, 2012
.Dt CAP_MKDB 1
.Os
.Sh NAME
.Nm cap_mkdb
.Nd create capability database
.Sh SYNOPSIS
.Nm
.Op Fl b | Fl l
.Op Fl v
.Op Fl f Ar outfile
.Ar file1
.Op Ar file2 ...
.Sh DESCRIPTION
.Nm
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 options are as follows:
.Bl -tag -width XXXXXX -offset 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 the
.Fl l
flags are mutually exclusive.
The default byte ordering is the current host order.
.Sh FORMAT
The following is a description of the hashed database created by
.Nm .
For a description of the format of the input files see
.Xr capfile 5 .
.Pp
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 couldn't 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 capfile 5