[PATCH] fetch: fix unpacking .deb and .ipk with python3

[PATCH] fetch: fix unpacking .deb and .ipk with python3

[Martin Jansa]

* otherwise e.g. libjs-jquery-1.7.2-r0 do_unpack fails like this:
  http://errors.yoctoproject.org/Errors/Details/69433/
DEBUG: Executing python function do_unpack
DEBUG: Executing python function base_do_unpack
ERROR: Error executing a python function in exec_python_func() autogenerated:

The stack trace of python calls that resulted in this exception/failure was:
File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
     0001:
 *** 0002:base_do_unpack(d)
     0003:
File: ' /openembedded-core/meta/classes/base.bbclass', lineno: 155, function: base_do_unpack
     0151:    bb.utils.remove(p_dir, True)
     0152:
     0153:    try:
     0154:        fetcher = bb.fetch2.Fetch(src_uri, d)
 *** 0155:        fetcher.unpack(rootdir)
     0156:    except bb.fetch2.BBFetchException as e:
     0157:        raise bb.build.FuncFailed(e)
     0158:}
     0159:
File: ' /bitbake/lib/bb/fetch2/__init__.py', lineno: 1681, function: unpack
     1677:
     1678:            if ud.lockfile:
     1679:                lf = bb.utils.lockfile(ud.lockfile)
     1680:
 *** 1681:            ud.method.unpack(ud, root, self.d)
     1682:
     1683:            if ud.lockfile:
     1684:                bb.utils.unlockfile(lf)
     1685:
File: ' /bitbake/lib/bb/fetch2/__init__.py', lineno: 1399, function: unpack
     1395:                output = subprocess.check_output('ar -t %s' % file, preexec_fn=subprocess_setup, shell=True)
     1396:                datafile = None
     1397:                if output:
     1398:                    for line in output.splitlines():
 *** 1399:                        if line.startswith('data.tar.'):
     1400:                            datafile = line
     1401:                            break
     1402:                    else:
     1403:                        raise UnpackError("Unable to unpack deb/ipk package - does not contain data.tar.* file", urldata.url)
Exception: TypeError: startswith first arg must be bytes or a tuple of bytes, not str

DEBUG: Python function base_do_unpack finished
DEBUG: Python function do_unpack finished
ERROR: Function failed: base_do_unpack

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 lib/bb/fetch2/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bb/fetch2/__init__.py b/lib/bb/fetch2/__init__.py
index f612318..325a66c 100644
--- a/lib/bb/fetch2/__init__.py
+++ b/lib/bb/fetch2/__init__.py
@@ -1392,7 +1392,7 @@ class FetchMethod(object):
                 else:
                     cmd = 'rpm2cpio.sh %s | cpio -id' % (file)
             elif file.endswith('.deb') or file.endswith('.ipk'):
-                output = subprocess.check_output('ar -t %s' % file, preexec_fn=subprocess_setup, shell=True)
+                output = subprocess.check_output('ar -t %s' % file, preexec_fn=subprocess_setup, shell=True).decode("utf-8")
                 datafile = None
                 if output:
                     for line in output.splitlines():
-- 
2.9.0