util: Check if specified config file cannot be opened

1 files changed, 5 insertions, 0 deletions

diff --git a/src/util/system.cpp b/src/util/system.cpp
index 258ba2f235..85a23731a2 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -904,6 +904,11 @@ bool ArgsManager::ReadConfigFiles(std::string& error, bool ignore_invalid_keys)
     const std::string confPath = GetArg("-conf", BITCOIN_CONF_FILENAME);
     fsbridge::ifstream stream(GetConfigFile(confPath));
 
+    // not ok to have a config file specified that cannot be opened
+    if (IsArgSet("-conf") && !stream.good()) {
+        error = strprintf("specified config file \"%s\" could not be opened.", confPath);
+        return false;
+    }
     // ok to not have a config file
     if (stream.good()) {
         if (!ReadConfigStream(stream, confPath, error, ignore_invalid_keys)) {