From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.kundenserver.de (mout.kundenserver.de [217.72.192.73]) by sourceware.org (Postfix) with ESMTPS id 1F051385783A for ; Wed, 27 Jan 2021 12:40:57 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 1F051385783A Received: from calimero.vinschen.de ([24.134.7.25]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MOiPx-1lLPlQ1jqR-00QDVF for ; Wed, 27 Jan 2021 13:40:55 +0100 Received: by calimero.vinschen.de (Postfix, from userid 500) id DA168A80D33; Wed, 27 Jan 2021 13:40:54 +0100 (CET) Date: Wed, 27 Jan 2021 13:40:54 +0100 From: Corinna Vinschen To: cygwin-patches@cygwin.com Subject: Re: [PATCH] Cygwin: fchmodat: add limited support for AT_SYMLINK_NOFOLLOW Message-ID: <20210127124054.GT4393@calimero.vinschen.de> Reply-To: cygwin-patches@cygwin.com Mail-Followup-To: cygwin-patches@cygwin.com References: <20210126213050.41241-1-kbrown@cornell.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210126213050.41241-1-kbrown@cornell.edu> X-Provags-ID: V03:K1:2N7qfeScr7AoK9Yoo4VuahxodXaGTGHyeTgH+j/yhwYyiAs8EbG Un9CdpUn/2NIlycoZCRZE/fY8vVkrqpPbfgQGTU39zmfK+WKEQsiq6KIOQd6NPCzTd1mYRz vmWV9YcpkvUiTKH5FM0Qm77G8oeZ//6+Lgzu6IDDI7t9aBnW+KLtyJRAfidheDdVgCtREnm osv0pkJIG9YvzwbOBEr7w== X-UI-Out-Filterresults: notjunk:1;V03:K0:fVda63Yk5MY=:7JEeL/FxdxdSuI42jrCTQa aUnPCkn1oF+mrHoxm50mtLekeYekWUpiyFKSZcKMCteCNB1aanJSSqPvj4XimNrtPpzd7t+iI NWlklrft5mpcxmgMiknIqXvQThucFdWdifXSkn8jgL+0nN5gM4FBUEZsH7h6sSm3Hh7YKldbb HoLuFpfeYczVnx80i8wa79j5Vqthn+/9P3DHhmMN08cOyruYp6nTvZCIxonAT4NKteGs+2gtU jE1BwF+ZTSFzHRGbEcYalnxxg6s4Py3BboICdCtdyB8DTpQaxj/gSZS5QNbsMueAmoX2ShahI DohoxcGSpN75f7Exwkbzq3AbLBc9B3KvrWIieS2J356PXZwejQRTQWkqcs3RxF0xTAXcwFUPa oyGR0kgDFr0/ccJA4kxPRg2e86s+7iobQAM9bAeRqlPMaMbEXSlY+H7TZABlNUGtQAH8bQVmE 5KU9hgQWrg== X-Spam-Status: No, score=-101.0 required=5.0 tests=BAYES_00, GOOD_FROM_CORINNA_CYGWIN, JMQ_SPF_NEUTRAL, KAM_DMARC_NONE, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NEUTRAL, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin-patches@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component patch submission and discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Jan 2021 12:40:58 -0000 On Jan 26 16:30, Ken Brown via Cygwin-patches wrote: > Allow fchmodat with the AT_SYMLINK_NOFOLLOW flag to succeed on > non-symlinks. Previously it always failed, as it does on Linux. But > POSIX permits it to succeed on non-symlinks even if it fails on > symlinks. > > The reason for following POSIX rather than Linux is to make gnulib > report that fchmodat works on Cygwin. This improves the efficiency of > packages like GNU tar that use gnulib's fchmodat module. Previously > such packages would use a gnulib replacement for fchmodat on Cygwin. Wait, what? So if Cygwin behaves like Linux, gnulib treats fchmodat as non-working? So what does gnulib do on a Linux system? Does it use its own fchmodat there, too? Puzzled, Corinna