[OE-core] [PATCH v2 7/9] devtool: reset: avoid errors in case file no longer exists

[Paul Eggleton]

If you manually delete files in the workspace layer (which you really
shouldn't) it was possible to get yourself into the situation where you
couldn't reset because we were attempting to check if the file had been
modified and erroring out if it couldn't be opened. If the file's not
there anymore there's not much point checking if it needs to be
preserved, just skip it.

Signed-off-by: Paul Eggleton <paul.eggleton at linux.intel.com>
---
 scripts/lib/devtool/standard.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/scripts/lib/devtool/standard.py b/scripts/lib/devtool/standard.py
index 8932265..d561e40 100644
--- a/scripts/lib/devtool/standard.py
+++ b/scripts/lib/devtool/standard.py
@@ -308,7 +308,14 @@ def _check_preserve(config, recipename):
                 splitline = line.rstrip().split('|')
                 if splitline[0] == recipename:
                     removefile = os.path.join(config.workspace_path, splitline[1])
-                    md5 = bb.utils.md5_file(removefile)
+                    try:
+                        md5 = bb.utils.md5_file(removefile)
+                    except IOError as err:
+                        if err.errno == 2:
+                            # File no longer exists, skip it
+                            continue
+                        else:
+                            raise
                     if splitline[2] != md5:
                         bb.utils.mkdirhier(preservepath)
                         preservefile = os.path.basename(removefile)
-- 
2.1.0