X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:subject:message-id:reply-to :references:mime-version:content-type:in-reply-to; q=dns; s= default; b=ingUEttQCiEbgVyy5WV0UNGD4Z08aNoNaWLGnzqSpyi5qBgzHC0DM u9Th+dzutF9RATqNpigklRzjHXYkAs8yD8K/+LfylmZG4k4VgoxjKb9DY5Xk+wtf woZ7INainpT42yGwqFLeXKXewXt/1hcBKZzY49fUyzIjS+xkVGJKl4= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:subject:message-id:reply-to :references:mime-version:content-type:in-reply-to; s=default; bh=Lk0h0cP7Xr7GE3kVxB3OWwsza3E=; b=lSYtuR+uJMSf6kKSvRo2owuFVleM kSa3XfunPMo4oSyYGjgLVML8byT9sx1YzH4+3p5Oo5ntNIkN+Fky7Z8iQUclKV/Q yxFgMIclWIKeHqgpHmthbfNzJZkDyJLskIgFnFDlZ72gU0BEymnIvaYXVz2HBChP IZbKCZN8mKGcKVU= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com X-Spam-SWARE-Status: No, score=0.0 required=5.0 tests=AWL,BAYES_50,RDNS_NONE autolearn=no version=3.3.1 Date: Fri, 19 Jul 2013 12:03:29 +0200 From: Corinna Vinschen To: cygwin AT cygwin DOT com Subject: Re: sqlite defect Message-ID: <20130719100329.GC20871@calimero.vinschen.de> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <51E703FB DOT 1010300 AT etr-usa DOT com> <51E74AB4 DOT 7010508 AT etr-usa DOT com> <20130718085953 DOT GC9628 AT calimero DOT vinschen DOT de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) On Jul 19 10:56, jojelino wrote: > On 2013-07-18 PM 5:59, Corinna Vinschen wrote:> On Jul 18 17:11, > jojelino wrote: > >> On 2013-07-18 AM 10:53, Warren Young wrote: > >>> Nothing so simple. Locking is handled at the OS and/or Cygwin DLL > >>> level. The build change between 3.7.16.2 and 3.7.17-3 is that > we're now > >>> relying on new features in the Cygwin DLL to do Windows-style > locking by > >>> default. > >>> > >>> Older versions of Cygwin SQLite bypassed the Cygwin DLL entirely for > >>> this, going straight to the Win32 API, thereby preventing the DLL from > >>> interposing itself for the "posix" case. > >>> > >> Mandatory locking feature of cygwin used in sqlite is broken. > > > > Simple testcase in plain C? Thanks, but... > #include > #include > #include > #include > #include > int > main() > { > int fd = open("asdf.txt", O_BINARY | O_RDWR | O_NOINHERIT | O_CREAT); > const char* buf = > "KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK\0"; > int i=0; > write(fd, buf, strlen(buf)); > fcntl(fd,F_LCK_MANDATORY,0); > assert(flock(fd,F_SETOWN)==0); ^^^^^^^^ F_SETOWN is no valid flag for flock(2). Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple