On 26.02.2011 10:50, Ivan Zhakov wrote: > 2011/2/26 Branko Čibej <br...@e-reka.si>: >> On 26.02.2011 07:32, Ivan Zhakov wrote: >>> Problem of re-installing file over marked for deletion file can be >>> solved using the following trick: >>> 1. Rename file to temporary name. >>> 2. Delete it >> (If the proper share bits are set.) >> > Sure.
It turns out that the FILE_SHARE_DELETE bit is the one that allows renames. >> Yes, that'd work, but if there's a way to unmark the deletion bit, >> that's even better, since then you'd not even have to create another >> file (with identical contents). >> > I'm not aware how to unmark deletion bit on Windows. You're right, there's no way to do it from user space. I suppose then that the easiest thing to do on Windows would be this: when a pristine needs to be deleted, instead of just deleting it, rename it to some unique random name within the same directory, and delete that. This way, you don't need extra logic for the "reinstate" step, nor do you have to ever check if there are open handles to the file. Rename (clearing the way for reinstate) and delete (the file goes away when all handles are closed) and apr_file_open already sets all the required share bits. BTW Julian, have you considered making the pristine files read-only (once they're written of course)? If yes, then be aware that in order to delete and/or rename a file on Windows, you have to first clear the read-only bit. I think we have utility functions for that in libsvn_subr, but it's worth a check. -- Brane
