bugzilla at apache
Jul 8, 2009, 1:51 PM
Post #1 of 4
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[Bug 39815] Atomic Creation of uploaded files in mod_dav
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https://issues.apache.org/bugzilla/show_bug.cgi?id=39815
--- Comment #6 from Stefan Fritsch <sf [at] sfritsch> 2009-07-08 13:51:25 PST ---
This bug can also cause data loss: When something goes wrong with a PUT request
that replaces a file, the old file will be deleted.
I see three possible solutions:
1) Create a new hook that is called in dav_notify_created() to update the lock
key. This breaks mod_dav's API compatibility and cannot be done in 2.2
2) Use a temp file that is moved over the old file as in Paul's patch, and
switch the lock key from inode to filename.
3) Use a temp file that is copied over the old file. This is slow and doesn't
solve the problem completely.
I would vote for 2), in order to get this into 2.2.
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