[firmware-free] 19/19: genorig.py: Make orig tarballs really reproducible

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benh pushed a commit to branch master
in repository firmware-free.

commit 84519e4fdb20d17f61c3b0e0390d74b58b32a9a8
Author: Ben Hutchings <ben at decadent.org.uk>
Date:   Sun Jan 10 20:51:37 2016 +0000

    genorig.py: Make orig tarballs really reproducible
    
    - Override umask while extracting/exporting files
    - Override user and group names in tarball
    
    [bwh: Cherry-picked from firmware-nonfree commit
     013238c36401354fb14d417cd89273126da8336d.  Don't mention this in the
     changelog since we haven't released an unreproducible tarball for this
     package.]
---
 debian/bin/genorig.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/debian/bin/genorig.py b/debian/bin/genorig.py
index c85495e..08fc89c 100755
--- a/debian/bin/genorig.py
+++ b/debian/bin/genorig.py
@@ -32,6 +32,7 @@ class Main(object):
     def __call__(self):
         import tempfile
         self.dir = tempfile.mkdtemp(prefix='genorig', dir='debian')
+        old_umask = os.umask(0o022)
         try:
             self.upstream_export()
 
@@ -46,8 +47,10 @@ class Main(object):
                     .st_mtime))
 
             self.delete_excluded()
+            os.umask(old_umask)
             self.tar(orig_date)
         finally:
+            os.umask(old_umask)
             shutil.rmtree(self.dir)
 
     def upstream_export(self):
@@ -89,7 +92,7 @@ class Main(object):
         self.log("Generate tarball %s\n" % out)
         cmdline = '''(cd '%s' && find '%s' -print0) |
                      LC_ALL=C sort -z |
-                     tar -C '%s' --no-recursion --null -T - --mtime '%s' -caf '%s'
+                     tar -C '%s' --no-recursion --null -T - --mtime '%s' --owner root --group root -caf '%s'
                   ''' % (self.dir, self.orig, self.dir, orig_date, out)
         try:
             if os.spawnv(os.P_WAIT, '/bin/sh', ['sh', '-c', cmdline]):

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