[tor-commits] [ooni-probe/master] SIG_DFL is not a signal, it's a signal handler

[art at torproject.org]

commit aabbd9b5c07484ee5e4e7493778527b0801859e9
Author: Leonid Evdokimov <leon at darkk.net.ru>
Date:   Wed Oct 12 17:55:54 2016 +0300

    SIG_DFL is not a signal, it's a signal handler
    
    It's semantically wrong to call kill with SIG_DFL although it's having
    correct `0` value by chance.
---
 ooni/scripts/ooniprobe_agent.py | 2 +-
 ooni/utils/__init__.py          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/ooni/scripts/ooniprobe_agent.py b/ooni/scripts/ooniprobe_agent.py
index 49694eb..e670d86 100644
--- a/ooni/scripts/ooniprobe_agent.py
+++ b/ooni/scripts/ooniprobe_agent.py
@@ -168,7 +168,7 @@ def stop_agent():
     while True:
         # poll once per second until we see the process is no longer running
         try:
-            os.kill(pid, signal.SIG_DFL)
+            os.kill(pid, 0)
         except OSError:
             print("process %d is dead" % pid)
             return
diff --git a/ooni/utils/__init__.py b/ooni/utils/__init__.py
index def533a..6abd04f 100644
--- a/ooni/utils/__init__.py
+++ b/ooni/utils/__init__.py
@@ -174,7 +174,7 @@ def get_ooni_root():
 
 def is_process_running(pid):
     try:
-        os.kill(pid, signal.SIG_DFL)
+        os.kill(pid, 0)
         running = True
     except OSError as ose:
         if ose.errno == errno.EPERM: