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Lock.pm  view on Meta::CPAN

determines if the flock call on the lockfile should
block waiting for a lock, or if it should return failure if a lock can
not be immediately attained. If "nonblocking" is set and a lock can not
be attained, the tie command will fail.  Currently, I'm not sure how to
differentiate this between a failure form the DB_File layer.

=item lockfile_mode 

determines the mode for the sysopen call in opening
the lockfile. The default mode will be formulated to allow anyone that
can read or write the DB_File permission to read and write the lockfile.
(This is because some systems may require that one have write access to
a file to lock it for reading, I understand.) The umask will be prevented
from applying to this mode.

=back

Note: One may import the same values from DB_File::Lock as one may import
from DB_File.