Implement ListLayers() for the aufs, btrfs, and devicemapper drivers,
along with a unit test for them.
Stop filtering out directories with names that aren't 64-hex chars in
vfs and overlay ListLayers() implementations, which is more a convention
than a hard rule.
Have layerStore.Wipe() try to remove remaining listed layers after it
removes the layers that the layerStore knew of.
Close() a dangling ReadCloser in NaiveCreateFromTemplate.
Switch from using plain defer to using t.Cleanup() to handle deleting
layers that tests create, have the addManyLayers() test function do so
as well.
Remove vfs.CopyDir, which near as I can tell isn't referenced anywhere.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Run `go fmt ./...` which automatically adds the new build tag syntax.
This change is backwards compatible.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
Adjust build tags in drivers and pkg so that builds with CGO_ENABLED=0
won't fail outright. This ends up disabling btrfs (which uses kernel
headers), ostree (which uses libostree), overlayfs (which uses C headers
to define fs_disk_quota_t), and devicemapper (which uses libdevmapper
and loopback) by default.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Add a CreateFromTemplate() method to graph drivers, and use it instead
of a driver-oblivious diff/put method when we want to create a copy of
an image's top layer that has the same parent and which differs from the
original only in its ID maps.
This lets drivers that can quickly make an independent layer based on
another layer do something smarter than we were doing with the
driver-oblivious method. For some drivers, a native method is
dramatically faster.
Note that the driver needs to be able to do this while still exposing
just one notional layer (i.e., one link in the chain of layers for a
given container) to the higher levels of the APIs, so if the new layer
is actually a child of the template layer, that needs to remain a detail
that's private to the driver.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
This patch adds a MountOpts field to the drivers so we can simplify
the interface to Get and allow additional options to be passed in the future.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Add an "echo" driver test, for making sure that we generate diffs
correctly when particular paths are removed in one layer and restored in
a subsequent one.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Rename the library module and CLI wrapper.
Rename daemon/graphdriver to drivers.
Catch up vendoring to match modules we've pruned.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Han-Wen Nienhuys