Previously the pin states of deleted files stayed in the 'flags'
database and could be inadvertently reused when a new file with the same
name appeared. Now they are deleted.
To make this work right, the meaning of the 'path' column in the 'flags'
table was changed: Previously it never had the .owncloud file suffix.
Now it's the same as in metadata.path.
This takes the safe parts from #7274 for inclusion in 2.6. The more
elaborate database schema changes (why use 'path' the join the two
tables in the first place?) shall go into master.
The previous patch ensured that the sqlite temporaries weren't deleted
and recreated for every sync run, but there was still time between
client startup and the first sync run where they would have the
"needs-sync" icon.
The pin state is a per-item attribute that has an effect on _type:
AlwaysLocal dehydrated files will be marked for hydration and OnlineOnly
hydrated files will be marked for dehydration.
Where exactly this effect materializes depends on how the pin states are
stored. If they're stored in the db (suffix) the dbEntry._type is
changed during the discovery.
If the pin state is stored in the filesystem, the localEntry._type must
be adjusted by the plugin's stat callback.
This patch makes pin states behave more consistently between plugins.
Previously with suffix-vfs pin states only had an effect on new remote
files. Now the effect of pinning or unpinning files or directories is as
documented and similar to other plugins.
As far as I'm aware local discovery can be skipped on folders that are
selective-sync blacklisted, so a local discovery is required when an
entry is removed from the blacklist.
Also rename
avoidReadFromDbOnNextSync() -> schedulePathForRemoteDiscovery()
since the old name might also imply it's not read from db in the local
discovery - which is not the case. Use Folder::
schedulePathForLocalDiscovery() for that.
- SyncJournalDB functions now behind internalPinStates() to avoid
accidental usage, when nearly everyone should go through Vfs.
- Rename Vfs::getPinState() to Vfs::pinState()
supportsSelectiveSync(): clearer than !supportsVirtualFiles() and allows
extra logic
isVfsOnOffSwitchPending(): Somewhat awkward way of dealing with the
phase between a user requesting vfs state to be switched and it
actually happening
This allows enabling and disabling vfs.
To distinguish this operation from setting the root pin state, the
availability setting is adjusted as well to be similar to the
menu that shows in the shell extensions.
This is to avoid issues on OSX, where the ._ prefix has special meaning.
Originally (before 2.3.2) ._ was necessary to guarantee exclusion. But
since then the .sync_ prefix is excluded as well.
This does not affect existing database files.
Previously there'd likely be a mess if a 2.6 winvfs folder was attempted
to be used with a 2.5 client. Now the older clients will ignore these
folders.
This helps support 2.5 settings where there are virtual files in the
tree but new files aren't created virtual.
It's also a prelude for #6815
There's currently no way of
- upgrading vfs plugins (a silent suffix->winvfs upgrade is attempted
once only, when moving to master)
- disabling vfs capabilities outright
Also, if there is too-new configuration, backup the file, show a
warning message asking the user whether it's ok to discard the
configuration from the future.
See #6504
Now the db entries for placeholders will have the full placeholder
paths. That way older clients will, on remote discovery, delete the
placeholders and download the real files.
