AddNamespaceRangesUser takes a username and uses the standard system utility to create a system user/group pair used to hold the /etc/sub{uid,gid} ranges which will be used for user namespace mapping ranges in containers.

CanAccess takes a valid (existing) directory and a uid, gid pair and determines if that uid, gid pair has access (execute bit) to the directory.

GetRootUIDGID retrieves the remapped root uid/gid pair from the set of maps.

LookupGID uses traditional local system files lookup (from libcontainer/user) on a group ID, followed by a call to `getent` for supporting host configured non-files passwd and group dbs.

LookupGroup uses traditional local system files lookup (from libcontainer/user) on a group name, followed by a call to `getent` for supporting host configured non-files passwd and group dbs.

LookupUID uses traditional local system files lookup (from libcontainer/user) on a uid, followed by a call to `getent` for supporting host configured non-files passwd and group dbs.

LookupUser uses traditional local system files lookup (from libcontainer/user) on a username, followed by a call to `getent` for supporting host configured non-files passwd and group dbs.

MkdirAllAndChown creates a directory (include any along the path) and then modifies ownership to the requested uid/gid.

MkdirAllAndChownNew creates a directory (include any along the path) and then modifies ownership ONLY of newly created directories to the requested uid/gid.

MkdirAndChown creates a directory and then modifies ownership to the requested uid/gid.

NewIdentityMapping takes a requested username and using the data from /etc/sub{uid,gid} ranges, creates the proper uid and gid remapping ranges for that user/group pair.

NewIDMappingsFromMaps creates a new mapping from two slices Deprecated: this is a temporary shim while transitioning to IDMapping.

Identity is either a UID and GID pair or a SID (but not both).

IdentityMapping contains a mappings of UIDs and GIDs.

IDMap contains a single entry for user namespace range remapping.