From d13ca0de4fccafa93cf97674f4b8539b8f00d3f3 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Tue, 18 Sep 2012 12:36:54 -0700
Subject: [PATCH] ITS#7394 ignore WRITEMAP if RDONLY
---
libraries/libmdb/mdb.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index 2c54cbd2e5..c0eb6252c2 100644
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -3128,6 +3128,10 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mode_t mode)
if (rc)
goto leave;
+ /* silently ignore WRITEMAP if we're only getting read access */
+ if (F_ISSET(flags, MDB_RDONLY) && F_ISSET(flags, MDB_WRITEMAP))
+ flags ^= MDB_WRITEMAP;
+
#ifdef _WIN32
if (F_ISSET(flags, MDB_RDONLY)) {
oflags = GENERIC_READ;
--
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