Create package keywords directory if it doesn't exist.

bin/cbuildbot.py

 #!/usr/bin/python
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """CBuildbot is wrapper around the build process used by the pre-flight queue"""
 
 import errno
 import heapq
@@ skipping 214 matching lines @@
   cwd = os.path.join(buildroot, 'src', 'scripts')
   portage_atom_string = RunCommand(['bin/cros_mark_chrome_as_stable',
                                     '--tracking_branch=%s' % tracking_branch,
                                     chrome_rev], cwd=cwd, redirect_stdout=True,
                                     enter_chroot=True).rstrip()
   if not portage_atom_string:
     Info('Found nothing to rev.')
     return None
   else:
     chrome_atom = portage_atom_string.split('=')[1]
+    keywords_file = CHROME_KEYWORDS_FILE % {'board': board}
     # TODO(sosa): Workaround to build unstable chrome ebuild we uprevved.
-    RunCommand(['sudo', 'tee', CHROME_KEYWORDS_FILE % {'board': board}],
-               input='=%s\n' % chrome_atom, enter_chroot=True,
-               cwd=cwd)
+    RunCommand(['sudo', 'mkdir', '-p', os.path.dirname(keywords_file)],
+               enter_chroot=True, cwd=cwd)
+    RunCommand(['sudo', 'tee', keywords_file], input='=%s\n' % chrome_atom,
+               enter_chroot=True, cwd=cwd)
     return chrome_atom
 
 
 def _UprevAllPackages(buildroot, tracking_branch, board, overlays):
   """Uprevs all packages that have been updated since last uprev."""
   cwd = os.path.join(buildroot, 'src', 'scripts')
   chroot_overlays = [ReinterpretPathForChroot(path) for path in overlays]
   RunCommand(['./cros_mark_as_stable', '--all',
               '--board=%s' % board,
               '--overlays=%s' % ':'.join(chroot_overlays),
@@ skipping 482 matching lines @@
   except:
     # Send failure to master bot.
     if not buildconfig['master'] and buildconfig['important']:
       cbuildbot_comm.PublishStatus(cbuildbot_comm.STATUS_BUILD_FAILED)
 
     raise
 
 
 if __name__ == '__main__':
     main()