From a38cf3610db33dcd2a43f59b5fff8be81b821fe4 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Mon, 6 May 2013 13:36:32 +0300
Subject: [PATCH] mkbootfs: hack around absolute symbolic links in source
Absolute symbolic links refer to the host directory structure, while we
want them to refer to the external/ tree. Since we have several trees,
we can't just rebase them, so walk down the tree trying to find a match.
Fragile and ugly, but seems to work.
---
scripts/mkbootfs.py | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/scripts/mkbootfs.py b/scripts/mkbootfs.py
index b1a67a848..00a540a8c 100755
--- a/scripts/mkbootfs.py
+++ b/scripts/mkbootfs.py
@@ -63,7 +63,22 @@ def expand(items):
else:
yield (name, hostname)
+def unsymlink(f):
+ try:
+ link = os.readlink(f)
+ if link.startswith('/'):
+ # try to find a match
+ base = os.path.dirname(f)
+ while not os.path.exists(base + link):
+ base = os.path.dirname(base)
+ else:
+ base = os.path.dirname(f) + '/'
+ return unsymlink(base + link)
+ except Exception:
+ return f
+
files = list(expand(files.items()))
+files = [(x, unsymlink(y)) for (x, y) in files]
pos = (len(files) + 1) * metadata_size
--
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