def SetChrootVersion(self, version, chroot=None):
"""Update the version file in the chroot to |version|.
Args:
version: Version to use. E.g. 6394.0.0-rc3
chroot: Path to chroot. Defaults to 'chroot' under build root.
"""
chroot_version_file = self._ChrootVersionPath(chroot)
if os.path.exists(os.path.dirname(chroot_version_file)):
sudo.SetFileContents(chroot_version_file, version)
def _SudoSet(self, key, value):
"""Set a cgroup file in this namespace to a specific value"""
name = self._LimitName(key, True)
try:
return sudo.SetFileContents(name, value, cwd=os.path.dirname(name))
except cros_build_lib.RunCommandError, e:
if e.exception is not None:
# Command failed before the exec itself; convert ENOENT
# appropriately.
exc = e.exception
if isinstance(exc, EnvironmentError) and exc.errno == errno.ENOENT:
raise _GroupWasRemoved(self.namespace, e)
raise