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CAP_MKDB(1) FreeBSD 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.
-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.
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
FreeBSD 9.0 February 22, 2005 FreeBSD 9.0
|d||* disklabel(8): disklabel • man/disklabel • man/orig/disklabel • Пример использования disklabel|
|v||* vmstat(8): vmstat • man/vmstat • man/orig/vmstat • Пример использования vmstat|