From 623553393b640cb459262053bd73cd3ddc320810 Mon Sep 17 00:00:00 2001
From: Peter Surda <surda@economicsofbitcoin.com>
Date: Tue, 15 Aug 2017 12:25:38 +0200
Subject: [PATCH] PID file truncate fix
- on unix it truncated the file if a second instance was being
launched
---
src/singleinstance.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/singleinstance.py b/src/singleinstance.py
index 78a0cb33..7a025945 100644
--- a/src/singleinstance.py
+++ b/src/singleinstance.py
@@ -56,7 +56,7 @@ class singleinstance:
pidLine = "%i\n" % self.lockPid
os.write(self.fd, pidLine)
else: # non Windows
- self.fp = open(self.lockfile, 'w')
+ self.fp = open(self.lockfile, 'a+')
try:
if self.daemon and self.lockPid != os.getpid():
fcntl.lockf(self.fp, fcntl.LOCK_EX) # wait for parent to finish
@@ -68,6 +68,7 @@ class singleinstance:
sys.exit(-1)
else:
pidLine = "%i\n" % self.lockPid
+ self.fp.truncate(0)
self.fp.write(pidLine)
self.fp.flush()