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CAP_MKDB(1) FreeBSD General Commands Manual CAP_MKDB(1)

Содержание

[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