When restoring a dir, if that dir does not have write permissions, restoration of files fails

[ben]

Restoration will set permissions on a dir, then be surprised if these stop it from writing a file in it later. For example, here's some strace output:

chmod("some/directory", 0555) = 0
...
open("some/directory/file.ext", O_WRONLY|O_CREAT|O_EXCL|O_LARGEFILE, 0666) = -1 EACCES (Permission denied)

oops.

Of course, this only affects non-root users.

[chris]

Should be fixed by [1618] and [1619], needs testing and merging.

[chris]

The fix has been merged into trunk, and there is a test for it which passes, so I'm marking this as fixed.