I think you're right that the pack is the problem and wanted to add that even a link to 's s l l l' working won't be useful since the lengths of the data types of a struct flock are not standard. Some systems use 64 bits for file offsets and those definitely won't work with 'l' in pack (which is always 32 bits), but 'q' might.

In reply to Re: Re: fcntl() madness with C and perl by Anonymous Monk
in thread fcntl() madness with C and perl by darkomen

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