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-rw-r--r--src/init.cpp38
1 files changed, 27 insertions, 11 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 4f435dc7cf..b70e6e9158 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1039,18 +1039,8 @@ bool AppInitParameterInteraction()
return true;
}
-bool AppInitSanityChecks()
+static bool LockDataDirectory(bool probeOnly)
{
- // ********************************************************* Step 4: sanity checks
-
- // Initialize elliptic curve code
- ECC_Start();
- globalVerifyHandle.reset(new ECCVerifyHandle());
-
- // Sanity check
- if (!InitSanityCheck())
- return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), _(PACKAGE_NAME)));
-
std::string strDataDir = GetDataDir().string();
// Make sure only a single Bitcoin process is using the data directory.
@@ -1063,16 +1053,42 @@ bool AppInitSanityChecks()
if (!lock.try_lock()) {
return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running."), strDataDir, _(PACKAGE_NAME)));
}
+ if (probeOnly) {
+ lock.unlock();
+ }
} catch(const boost::interprocess::interprocess_exception& e) {
return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running.") + " %s.", strDataDir, _(PACKAGE_NAME), e.what()));
}
return true;
}
+bool AppInitSanityChecks()
+{
+ // ********************************************************* Step 4: sanity checks
+
+ // Initialize elliptic curve code
+ ECC_Start();
+ globalVerifyHandle.reset(new ECCVerifyHandle());
+
+ // Sanity check
+ if (!InitSanityCheck())
+ return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), _(PACKAGE_NAME)));
+
+ // Probe the data directory lock to give an early error message, if possible
+ return LockDataDirectory(true);
+}
+
bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
{
const CChainParams& chainparams = Params();
// ********************************************************* Step 4a: application initialization
+ // After daemonization get the data directory lock again and hold on to it until exit
+ // This creates a slight window for a race condition to happen, however this condition is harmless: it
+ // will at most make us exit without printing a message to console.
+ if (!LockDataDirectory(false)) {
+ // Detailed error printed inside LockDataDirectory
+ return false;
+ }
#ifndef WIN32
CreatePidFile(GetPidFile(), getpid());