Write anacdump.txt upon receipt of SIGUSR2 (from clumens).

This is the patch Chris posted, modified to use
inspect.stack to generate the traceback.

2 files changed, 17 insertions, 2 deletions

diff --git a/anaconda b/anaconda
index ade122dc6..624c19ca1 100755
--- a/anaconda
+++ b/anaconda
@@ -502,6 +502,15 @@ class Anaconda:
         # *sigh* we still need to be able to write this out
         self.xdriver = None
 
+    def dumpState(self):
+        from exception import AnacondaExceptionDump
+        from inspect import stack as _stack
+        # Skip the frames for dumpState and the signal handler.
+        stack = _stack()[2:]
+        stack.reverse()
+        exn = AnacondaExceptionDump(None, None, stack)
+        exn.write(anaconda)
+
     def writeXdriver(self, instPath="/"):
         # this should go away at some point, but until it does, we
         # need to keep it around.  it could go into instdata but this
@@ -609,7 +618,7 @@ if __name__ == "__main__":
     # this handles setting up updates for pypackages to minimize the set needed
     setupPythonUpdates()
 
-    import signal, traceback, string, isys, iutil, time
+    import signal, string, isys, iutil, time
     from exception import handleException
     import dispatch
     import warnings
@@ -632,6 +641,9 @@ if __name__ == "__main__":
     signal.signal(signal.SIGINT, signal.SIG_DFL)
     signal.signal(signal.SIGSEGV, isys.handleSegv)
 
+    # add our own additional signal handlers
+    signal.signal(signal.SIGUSR2, lambda signum, frame: anaconda.dumpState())
+
     setupEnvironment()
 
     # we need to do this really early so we make sure its done before rpm
diff --git a/exception.py b/exception.py
index 28c0afb38..a53e60edb 100644
--- a/exception.py
+++ b/exception.py
@@ -71,7 +71,10 @@ class AnacondaExceptionDump:
         lst.reverse()
         lst.insert(0, "anaconda %s exception report\n" % os.getenv("ANACONDAVERSION"))
         lst.insert(1, 'Traceback (most recent call first):\n')
-        lst.extend(traceback.format_exception_only(self.type, self.value))
+
+        if self.type is not None and self.value is not None:
+            lst.extend(traceback.format_exception_only(self.type, self.value))
+
         return joinfields(lst, "")
 
     def format_stack(self):