[OE-core] [PATCH 1/1] package_manager.py: Fix race condition in OpkgIndexer.write_index()

[mariano.lopez at linux.intel.com]

From: Mariano Lopez <mariano.lopez at linux.intel.com>

When writing the index using ipk packages there could be a race condition
when populate the index. This happens because the architectures
are repeated (specially all) and the commands generated to write the index
run in parallel.

This change avoid the duplication of commands using a set instead of a list.

[YOCTO #8924]

Signed-off-by: Mariano Lopez <mariano.lopez at linux.intel.com>
---
 meta/lib/oe/package_manager.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
index b701b8c..fe3f8c5 100644
--- a/meta/lib/oe/package_manager.py
+++ b/meta/lib/oe/package_manager.py
@@ -157,7 +157,7 @@ class OpkgIndexer(Indexer):
         if not os.path.exists(os.path.join(self.deploy_dir, "Packages")):
             open(os.path.join(self.deploy_dir, "Packages"), "w").close()
 
-        index_cmds = []
+        index_cmds = set()
         for arch_var in arch_vars:
             archs = self.d.getVar(arch_var, True)
             if archs is None:
@@ -173,7 +173,7 @@ class OpkgIndexer(Indexer):
                 if not os.path.exists(pkgs_file):
                     open(pkgs_file, "w").close()
 
-                index_cmds.append('%s -r %s -p %s -m %s' %
+                index_cmds.add('%s -r %s -p %s -m %s' %
                                   (opkg_index_cmd, pkgs_file, pkgs_file, pkgs_dir))
 
         if len(index_cmds) == 0:
-- 
2.6.2