BecomeRootInUserNS re-exec podman in a new userNS.

ConfigurationMatches checks whether the additional uids/gids configured for the user match the current user namespace.

GetAvailableGids returns how many GIDs are available in the current user namespace.

GetConfiguredMappings returns the additional IDs configured for the current user.

GetRootlessGID returns the GID of the user in the parent userNS.

GetRootlessUID returns the UID of the user in the parent userNS.

IsFdInherited checks whether the fd is opened and valid to use.

IsRootless returns whether the user is rootless.

ReadMappingsProc returns the uid_map and gid_map.

TryJoinFromFilePaths attempts to join the namespaces of the pid files in paths.

TryJoinPauseProcess attempts to join the namespaces of the pause PID via TryJoinFromFilePaths.