[Xen-devel] [PATCH] tools/pygrub: store kernels in /var/run/pygrub

[Olaf Hering <olaf@xxxxxxxxx>]

Move location of temporary bootfiles from /var/run/xend/boot to
/var/run/pygrub. If the directory does not exist create it, unless
--output-directory=<dir> was specified.

The reason for this change is that all entrys below /var/run have to be
created at runtime in case /var/run is cleared on every boot.

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
---

New code not runtime tested as pygrub, just as hello_world.py...

 tools/pygrub/src/pygrub | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/pygrub/src/pygrub b/tools/pygrub/src/pygrub
index 54fecee..a89fd49 100644
--- a/tools/pygrub/src/pygrub
+++ b/tools/pygrub/src/pygrub
@@ -14,6 +14,7 @@
 #
 
 import os, sys, string, struct, tempfile, re, traceback
+import errno
 import copy
 import logging
 import platform
@@ -757,7 +758,7 @@ if __name__ == "__main__":
     debug = False
     not_really = False
     output_format = "sxp"
-    output_directory = "/var/run/xend/boot"
+    output_directory = None
 
     # what was passed in
     incfg = { "kernel": None, "ramdisk": None, "args": "" }
@@ -813,6 +814,16 @@ if __name__ == "__main__":
     if debug:
        logging.basicConfig(level=logging.DEBUG)
 
+    if output_directory is None:
+        output_directory = "/var/run/pygrub"
+        try:
+            os.mkdir(output_directory, 0700)
+        except OSError as exc:
+            if exc.errno == errno.EEXIST and os.path.isdir(output_directory):
+                pass
+            else:
+                raise
+
     if output is None or output == "-":
         fd = sys.stdout.fileno()
     else:

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