From: Mike Looijmans <mike.looijmans@topic.nl>
Date: Thu, 17 Aug 2017 13:43:18 +0000 (+0200)
Subject: qemuboot.bbclass: Prevent creating a link loop
X-Git-Tag: lucaceresoli/bug-15201-perf-libtraceevent-missing~20338
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f46652e77f467861dc68c3a8e54f27d08659222d;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git

qemuboot.bbclass: Prevent creating a link loop

When IMAGE_NAME and IMAGE_LINK_NAME are equal, do_write_qemuboot_conf will
create a symlink that links to itself.

Check if this is the case before creating the link.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass
index 86b306037fa..0e21fc9bdef 100644
--- a/meta/classes/qemuboot.bbclass
+++ b/meta/classes/qemuboot.bbclass
@@ -114,7 +114,8 @@ python do_write_qemuboot_conf() {
     with open(qemuboot, 'w') as f:
         cf.write(f)
 
-    if os.path.lexists(qemuboot_link):
-       os.remove(qemuboot_link)
-    os.symlink(os.path.basename(qemuboot), qemuboot_link)
+    if qemuboot_link != qemuboot:
+        if os.path.lexists(qemuboot_link):
+           os.remove(qemuboot_link)
+        os.symlink(os.path.basename(qemuboot), qemuboot_link)
 }