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Magic Mailing List |
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From: R. Timothy Edwards (tim AT stravinsky DOT jhuapl.edu) Date: Sun Aug 19 2001 - 17:04:06 EDT
Dear Prakash, If you downloaded the CVS source since sometime in July, you will have the correct file locking routines. I don't think this is true of the tar.gz distribution. File locking is implemented in such a way that user's who don't want it (which is probably the majority) won't be bothered by its habits, such as creating local directories for managing timestamps. For this reason, file locking, even when enabled in the compilation configuration, is not enabled at run-time until the "master file locking directory" is created in $CAD_HOME. Nothing needs to be put in this directory---magic will do that part---but $CAD_HOME/flock/ must exist, as its presence is what tells magic to go ahead with the file locking system. I may need to look closer at the code, though, because if it says "Directory "/flock" not available", this indicates that it could not find either an environment variable $CAD_HOME or a directory ~cad/. You will probably have to make sure that you set environment variable $CAD_HOME before starting magic. More detailed information on the locking mechanism can be found in the magic source tree under doc/textfiles/locking.txt Please let me know if you have any difficulties with the system, which has not been thoroughly exercised. For that matter, please let me know if you *don't* have any difficulties with the system, too. Regards, Tim
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