From d1fc3a48ff50f85ff5e3098edb3c0774d110af23 Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordu.net>
Date: Sat, 3 Dec 2016 14:50:16 +0100
Subject: Open permdb read-only in merge_backup and merge_dist.

---
 tools/merge_backup.py | 3 ++-
 tools/merge_dist.py   | 3 ++-
 tools/mergetools.py   | 8 ++++----
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/tools/merge_backup.py b/tools/merge_backup.py
index cadcec7..d1b6d93 100755
--- a/tools/merge_backup.py
+++ b/tools/merge_backup.py
@@ -144,7 +144,8 @@ def merge_backup(args, config, localconfig, secondaries):
     failures = 0
     paths = localconfig["paths"]
     mergedb = paths["mergedb"]
-    chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains")
+    chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains",
+                    write_enabled=False)
     logorderfile = mergedb + "/logorder"
     currentsizefile = mergedb + "/fetched"
     statusfile = mergedb + "/merge_backup.status"
diff --git a/tools/merge_dist.py b/tools/merge_dist.py
index d81f0a1..f1bdaf9 100755
--- a/tools/merge_dist.py
+++ b/tools/merge_dist.py
@@ -218,7 +218,8 @@ def main():
     args, config, localconfig = parse_args()
     paths = localconfig["paths"]
     mergedb = paths["mergedb"]
-    chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains")
+    chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains",
+                    write_enabled=False)
     lockfile = mergedb + "/.merge_dist.lock"
 
     loginit(args, "merge_dist.log")
diff --git a/tools/mergetools.py b/tools/mergetools.py
index 1ff3fa5..2713b23 100644
--- a/tools/mergetools.py
+++ b/tools/mergetools.py
@@ -453,11 +453,11 @@ def parse_args():
 
     return (args, config, localconfig)
 
-def perm(dbtype, path):
+def perm(dbtype, path, write_enabled=True):
     if dbtype == "filedb":
         return FileDB(path)
     elif dbtype == "permdb":
-        return PermDB(path)
+        return PermDB(path, write_enabled=write_enabled)
     assert False
 
 def waitforfile(path):
@@ -524,8 +524,8 @@ class FileDB:
         pass
 
 class PermDB:
-    def __init__(self, path):
-        self.permdbobj = permdb.alloc(path)
+    def __init__(self, path, write_enabled=True):
+        self.permdbobj = permdb.alloc(path, write_enabled)
     def get(self, key):
         return permdb.getvalue(self.permdbobj, key)
     def add(self, key, value):
-- 
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