History

Cory Snider 098a44c07f Finish refactor of UID/GID usage to a new struct Finish the refactor which was partially completed with commit `34536c498d`, passing around IdentityMapping structs instead of pairs of []IDMap slices. Existing code which uses []IDMap relies on zero-valued fields to be valid, empty mappings. So in order to successfully finish the refactoring without introducing bugs, their replacement therefore also needs to have a useful zero value which represents an empty mapping. Change IdentityMapping to be a pass-by-value type so that there are no nil pointers to worry about. The functionality provided by the deprecated NewIDMappingsFromMaps function is required by unit tests to to construct arbitrary IdentityMapping values. And the daemon will always need to access the mappings to pass them to the Linux kernel. Accommodate these use cases by exporting the struct fields instead. BuildKit currently depends on the UIDs and GIDs methods so we cannot get rid of them yet. Signed-off-by: Cory Snider <csnider@mirantis.com>		2022-03-14 16:28:57 -04:00
..
README.md	Fix bunch of typos	2016-10-29 15:03:26 +08:00
device_tool.go	Finish refactor of UID/GID usage to a new struct	2022-03-14 16:28:57 -04:00
device_tool_windows.go	…

README.md

Docker device tool for devicemapper storage driver backend

The ./contrib/docker-device-tool contains a tool to manipulate devicemapper thin-pool.

Compile

$ make shell
## inside build container
$ go build contrib/docker-device-tool/device_tool.go

# if devicemapper version is old and compilation fails, compile with `libdm_no_deferred_remove` tag
$ go build -tags libdm_no_deferred_remove contrib/docker-device-tool/device_tool.go