From: Randy Witt <randy.e.witt@linux.intel.com>
Date: Mon, 23 Feb 2015 17:00:35 +0000 (+0000)
Subject: gen-lockedsig-cache: Allow cross-filesystem copies.
X-Git-Tag: lucaceresoli/bug-15201-perf-libtraceevent-missing~31131
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf675896340ebed7c4830b93d791ddb08999031f;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git

gen-lockedsig-cache: Allow cross-filesystem copies.

Since this previously always tried to use hardlinks you couldn't have
the source and destination be on different devices. This change allows
for that and also prevents failure in situations where the files already
existed.

Signed-off-by: Randy Witt <randy.e.witt@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

diff --git a/scripts/gen-lockedsig-cache b/scripts/gen-lockedsig-cache
index dfb282efd4a..c93b2c0b99b 100755
--- a/scripts/gen-lockedsig-cache
+++ b/scripts/gen-lockedsig-cache
@@ -35,6 +35,12 @@ for s in sigs:
 
 for f in files:
     dst = f.replace(sys.argv[2], sys.argv[3])
-    mkdir(os.path.dirname(dst))
-    os.link(f, dst)
+    destdir = os.path.dirname(dst)
+    mkdir(destdir)
 
+    if os.path.exists(dst):
+        os.remove(dst)
+    if (os.stat(f).st_dev == os.stat(destdir).st_dev):
+        os.link(f, dst)
+    else:
+        shutil.copyfile(f, dst)