[bitbake-devel] [PATCH 1/3 v2] bitbake: Fix return value checks from subprocess.call()'s

[Mikko Rapeli]

Python function subprocess.call() returns the return value of the
executed process. If return values are not checked, errors may
go unnoticed and bad things can happen.

Change all callers of subprocess.call() which do not check for
the return value to use subprocess.check_call() which raises
CalledProcessError if the subprocess returns with non-zero value.

https://docs.python.org/2/library/subprocess.html#using-the-subprocess-module

All users of the function were found with:

$ git grep "subprocess\.call" | \
  egrep -v 'if.*subprocess\.call|=\ +subprocess\.call|return.*subprocess\.call'

Tested similar patch on top of yocto jethro. Only compile tested
core-image-minimal on poky master branch.

Signed-off-by: Mikko Rapeli <mikko.rapeli at bmw.de>
---
 bitbake/lib/bb/ui/ncurses.py | 2 +-
 bitbake/lib/bb/utils.py      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

v2:
split patches to bitbake, meta and scripts

v1:
http://lists.openembedded.org/pipermail/openembedded-core/2017-May/136901.html

diff --git a/bitbake/lib/bb/ui/ncurses.py b/bitbake/lib/bb/ui/ncurses.py
index d81e413..ca845a3 100644
--- a/bitbake/lib/bb/ui/ncurses.py
+++ b/bitbake/lib/bb/ui/ncurses.py
@@ -297,7 +297,7 @@ class NCursesUI:
 #                            bb.error("log data follows (%s)" % logfile)
 #                            number_of_lines = data.getVar("BBINCLUDELOGS_LINES", d)
 #                            if number_of_lines:
-#                                subprocess.call('tail -n%s %s' % (number_of_lines, logfile), shell=True)
+#                                subprocess.check_call('tail -n%s %s' % (number_of_lines, logfile), shell=True)
 #                            else:
 #                                f = open(logfile, "r")
 #                                while True:
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index 077fddc..6a44db5 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -680,7 +680,7 @@ def remove(path, recurse=False):
             if _check_unsafe_delete_path(path):
                 raise Exception('bb.utils.remove: called with dangerous path "%s" and recurse=True, refusing to delete!' % path)
         # shutil.rmtree(name) would be ideal but its too slow
-        subprocess.call(['rm', '-rf'] + glob.glob(path))
+        subprocess.check_call(['rm', '-rf'] + glob.glob(path))
         return
     for name in glob.glob(path):
         try:
-- 
1.9.1