Remove CLockFile and let CFile do its job

This shouldn't contain any major behaviour change, but there are some minor
ones. Also, the API for a shared lock wasn't used and thus is dropped.

Thanks to cnu for this idea.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1337 726aef4b-f618-498e-8847-2d620e286838

FileUtils.h

@@ -116,6 +116,10 @@ public:
 	void Close();
 	void ClearBuffer();
 
+	bool TryExLock(const CString& sLockFile, int iFlags = O_RDONLY);
+	bool TryExLock();
+	bool UnLock();
+
 	bool IsOpen() const;
 	CString GetLongName() const;
 	CString GetShortName() const;
@@ -123,6 +127,9 @@ public:
 	void SetFD(int iFD);
 
 private:
+	// flock() wrapper
+	bool Lock(int iOperation);
+
 	CString	m_sBuffer;
 	int		m_iFD;