initial vendordata support

This adds the ability for a datasource to provide "vendordata".
The difference here is that vendordata is from the vendor (cloud provider)
where user-data is from the user.  By enabling this channel, the vendor
can have input on how the instance is set up without modifying or needing
to understand the user-data.

vendordata is generally consumed exactly like user-data, but the user
has the ability to disable its consumption.

The only datasource supporting this at the moment is SmartOS.

1 files changed, 12 insertions, 2 deletions

diff --git a/cloudinit/util.py b/cloudinit/util.py
index a37172dc..3ce54f28 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -608,18 +608,28 @@ def del_dir(path):
     shutil.rmtree(path)
 
 
-def runparts(dirp, skip_no_exist=True):
+def runparts(dirp, skip_no_exist=True, exe_prefix=None):
     if skip_no_exist and not os.path.isdir(dirp):
         return
 
     failed = []
     attempted = []
+
+    if exe_prefix is None:
+        prefix = []
+    elif isinstance(exe_prefix, str):
+        prefix = [str(exe_prefix)]
+    elif isinstance(exe_prefix, list):
+        prefix = exe_prefix
+    else:
+        raise TypeError("exe_prefix must be None, str, or list")
+
     for exe_name in sorted(os.listdir(dirp)):
         exe_path = os.path.join(dirp, exe_name)
         if os.path.isfile(exe_path) and os.access(exe_path, os.X_OK):
             attempted.append(exe_path)
             try:
-                subp([exe_path], capture=False)
+                subp(prefix + [exe_path], capture=False)
             except ProcessExecutionError as e:
                 logexc(LOG, "Failed running %s [%s]", exe_path, e.exit_code)
                 failed.append(e)