meta: replace os.system with subprocess.call

Replace os.system with subprocess.call since the older function would
fail (more or less) silently if the executed program cannot be found

More info:
http://docs.python.org/library/subprocess.html#subprocess-replacements

[YOCTO #2454]

(From OE-Core rev: a07d03cc6f67c88feb9813ae7deb6e4a93552dfe)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/recipes-extended/cups/cups14.inc b/meta/recipes-extended/cups/cups14.inc
index 7c1968220d..85d8ca232f 100644
--- a/meta/recipes-extended/cups/cups14.inc
+++ b/meta/recipes-extended/cups/cups14.inc
@@ -57,9 +57,10 @@ fakeroot do_install () {
 }
 
 python do_package_append() {
+        import subprocess
         # Change permissions back the way they were, they probably had a reason...
         workdir = d.getVar('WORKDIR', True)
-        os.system('chmod 0511 %s/install/cups/var/run/cups/certs' % workdir)
+        subprocess.call('chmod 0511 %s/install/cups/var/run/cups/certs' % workdir, shell=True)
 }
 
 PACKAGES =+ "${PN}-lib ${PN}-libimage"