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3 Commits

Author SHA1 Message Date
Tonis Tiigi 50a498ea1c Verify layer tarstream 
This adds verification for getting layer data out
of layerstore. These failures should only be possible
if layer metadata files have been manually changed
of if something is wrong with tar-split algorithm.

Failing early makes sure we don’t upload invalid data
to the registries where it would fail after someone
tries to pull it.

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
(cherry picked from commit e29e580f7fe628e936925681a4885d0b655bb151)
 2016-02-17 14:26:16 -05:00
Derek McGowan d04fa49a0d Refactor RWLayer to use referenced object instead of string 
RWLayer will now have more operations and be protected through a referenced type rather than always looked up by string in the layer store.
Separates creation of RWLayer (write capture layer) from mounting of the layer.
This allows mount labels to be applied after creation and allowing RWLayer objects to have the same lifespan as a container without performance regressions from requiring mount.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
 2015-12-23 11:19:17 -08:00
Derek McGowan 500e77bad0 Add layer store 
Layer store manages read-only and read-write layers on a union file system.
Read only layers are always referenced by content addresses.
Read-write layer identifiers are handled by the caller but upon registering
its difference, the committed read-only layer will be referenced by content
hash.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
 2015-11-24 09:40:23 -08:00