When recovering from a inalid move operation, we call
avoidReadFromDbOnNextSync. This will remove the fileid from the db so
we don't detect a move on the next sync. But we want the next sync to fetch
the file id again, and this can only happen if we don't read them
from the db and do the actual PROPFIND, this is done by avoidReadFromDbOnNextSync
However, if there is propagation in that source directory later, it
will overide the invalid etag with the real one and we will not uissue the PROPFIND
to fetch the fileid.
We must therefore also protect the future write to the DB when calling
avoidReadFromDbOnNextSync
The fields varialbe should contain or'ed flags of the fields set
in the csync_vio_file_stat_t struct. The problem was that the field
for CSYNC_VIO_FILE_STAT_FIELDS_PERM was assigned rather than or'ed
which makes the release function for the struct not freeing the
etag memory => memleak.
We decided that we never want to rename a directory behind the
back of the user as the user may be using files in the directory
during the sync.
If moving is not allowed, we just erase the inode form the database so
the next sync will try to do an upload and delete and recover from there
using normal resolution.
This also add some code to update the inode back to the db when it is detected
as changed.
While uploading a new folder, if the folder is renamed on the server
when still uploading, the result will be that the files that are already
uploaded will end up in the new filder name, but the file that were
not still are in the old folder.
After renaming, all the new uploads wil fail with an error on this sync
because the parent directory don't exist.
But they were uploaded with the old name in the next sync because
the renaming was not detected because the file id was not in the DB
Fix the problem by fetching the file id always when creating a new
directory, on the next sync, and saving it in the database ummediatly
https://github.com/owncloud/enterprise/issues/191
The current code only update the permissions in the DB when
the permission becomes non-empty.
Now we update the permission each time they change.
That way the code is the same for file id and permission so it is
simpler.
To distinguish no permission present to nothing is allowed.
That was the intention of the old code but it did not work as
the first if was always taken
