Sunday, April 06, 2008

Calling Open

It turns out that calling open() can be tricky. This code was provided by Peter Guttmann to handle cases where the filesystem is changing underneath you.
Under Unix we try to defend against writing through links, but this is somewhat difficult since the there's no atomic way to do this, and without resorting to low-level I/O it can't be done at all. What we do is lstat() the file...

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