[dak/master] Install default SIGPIPE handler before calling dpkg-deb.

[Torsten Werner <twerner@debian.org>]

Signed-off-by: Torsten Werner <twerner@debian.org>
---
 daklib/dbconn.py |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/daklib/dbconn.py b/daklib/dbconn.py
index d39f8c5..5c987bd 100755
--- a/daklib/dbconn.py
+++ b/daklib/dbconn.py
@@ -39,6 +39,7 @@ import re
 import psycopg2
 import traceback
 import commands
+import signal
 
 try:
     # python >= 2.6
@@ -487,6 +488,11 @@ __all__.append('BinContents')
 
 ################################################################################
 
+def subprocess_setup():
+    # Python installs a SIGPIPE handler by default. This is usually not what
+    # non-Python subprocesses expect.
+    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+
 class DBBinary(ORMObject):
     def __init__(self, package = None, source = None, version = None, \
         maintainer = None, architecture = None, poolfile = None, \
@@ -525,7 +531,8 @@ class DBBinary(ORMObject):
         package does not contain any regular file.
         '''
         fullpath = self.poolfile.fullpath
-        dpkg = Popen(['dpkg-deb', '--fsys-tarfile', fullpath], stdout = PIPE)
+        dpkg = Popen(['dpkg-deb', '--fsys-tarfile', fullpath], stdout = PIPE,
+            preexec_fn = subprocess_setup)
         tar = TarFile.open(fileobj = dpkg.stdout, mode = 'r|')
         for member in tar.getmembers():
             if not member.isdir():
-- 
1.7.2.5