DragonFly On-Line Manual Pages
CAP_MKDB(1) DragonFly General Commands Manual CAP_MKDB(1)
cap_mkdb -- create capability database
cap_mkdb [-b | -l] [-v] [-f outfile] file ...
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.
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.
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
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.
The cap_mkdb utility exits 0 on success, and >0 if an error occurs.
dbopen(3), getcap(3), termcap(5)
DragonFly 3.7 February 22, 2005 DragonFly 3.7