man/orig/cap mkdb
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CAP_MKDB(1) FreeBSD General Commands Manual CAP_MKDB(1)
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[править] NAME
cap_mkdb -- create capability database
[править] SYNOPSIS
cap_mkdb [-b | -l] [-v] [-f outfile] file ...
[править] DESCRIPTION
The cap_mkdb utility builds a hashed database out of the getcap(3) logi-
cal database constructed by the concatenation of the specified files.
The database is named by the basename of the first file argument and the
string ``.db. The getcap(3) routines can access the database in this
form much more quickly than they can the original text file(s).
The ``tc capabilities of the records are expanded before the record is
stored into the database.
The following options are available:
-b Use big-endian byte order for database metadata.
-f outfile
Specify a different database basename.
-l Use little-endian byte order for database metadata.
-v Print out the number of capability records in the database.
The -b and -l flags are mutually exclusive. The default byte ordering is
the current host order.
[править] FORMAT
Each record is stored in the database using two different types of keys.
The first type is a key which consists of the first capability of the
record (not including the trailing colon (``:)) with a data field con-
sisting of a special byte followed by the rest of the record. The spe-
cial 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.
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.
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.
[править] EXIT STATUS
The cap_mkdb utility exits 0 on success, and >0 if an error occurs.
[править] SEE ALSO
dbopen(3) • getcap(3) • termcap(5)
FreeBSD 9.0 February 22, 2005 FreeBSD 9.0
