Open files only once

Michael Hanselmann public at
Wed Aug 13 21:18:11 UTC 2008

This patch series changes brackup to open files only once instead of several
times, thereby reducing I/O load and making error handling easier. It can also
improve performance when backing up network filesystems over the network. I
didn't do any performance tests, though. open(2)'ing a file more than once
seems wrong to me because that's not atomic anymore.

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