[OE-core] [PATCH 1/2] sanity: Use random filename for maximum path length test

[Mike Crowe]

check_create_long_filename used a fixed filename for its test files. This
meant that os.remove(testfile) could fail with ENOENT if two instances were
running at the same time against the same sstate directory. Using a
randomly generated filename stops this from happening.

(Although it might seem unlikely, this race did appear to occur multiple
times with Jenkins - presumably because the matrix jobs were all kicked off
at the same time.)

Signed-off-by: Mike Crowe <mac at mcrowe.com>
---
 meta/classes/sanity.bbclass |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 6807a23..0d40792 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -175,7 +175,8 @@ def check_conf_exists(fn, data):
     return False
 
 def check_create_long_filename(filepath, pathname):
-    testfile = os.path.join(filepath, ''.join([`num`[-1] for num in xrange(1,200)]))
+    import string, random
+    testfile = os.path.join(filepath, ''.join(random.choice(string.ascii_letters) for x in range(200)))
     try:
         if not os.path.exists(filepath):
             bb.utils.mkdirhier(filepath)
-- 
1.7.10.4