From owner-freebsd-current Sun Dec 30 6:47:50 2001 Delivered-To: freebsd-current@freebsd.org Received: from prg.traveller.cz (prg.traveller.cz [193.85.2.77]) by hub.freebsd.org (Postfix) with ESMTP id 2B27937B41A for ; Sun, 30 Dec 2001 06:47:47 -0800 (PST) Received: from prg.traveller.cz (localhost [127.0.0.1]) by prg.traveller.cz (8.12.1[KQ-CZ](1)/8.12.1/pukvis) with ESMTP id fBUEljlk077898; Sun, 30 Dec 2001 15:47:45 +0100 (CET) Received: from localhost (mime@localhost) by prg.traveller.cz (8.12.1[KQ-CZ](1)/pukvis) with ESMTP id fBUElj2u077894; Sun, 30 Dec 2001 15:47:45 +0100 (CET) Date: Sun, 30 Dec 2001 15:47:45 +0100 (CET) From: Michal Mertl To: Sheldon Hearn Cc: current@freebsd.org Subject: Re: ntfs and sendfile problem (corrupted data) In-Reply-To: <88088.1009714357@axl.seasidesoftware.co.za> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, 30 Dec 2001, Sheldon Hearn wrote: > > > On Sun, 30 Dec 2001 01:53:08 +0100, Michal Mertl wrote: > > > I have ntfs partition mounted ro on current. I can read from it without > > problems. But I noticed I get corrupted data (the corrupted file has > > right size but contains mostly zeros) when using ftpd to read them. > > > > I'm pretty sure the problem is thus in sendfile(2) and/or ntfs fs support. > > See also PR bin/31692, which reports simmilar problems using ftpd and > smbfs. See my request for feedback, which ought to help verify that > it's sendfile(2) causing the problem. > I did use the "goto oldway;" and the problem went away. I tried to look at /sys/kern/uipc_syscalls.c sendfile implementation but it is too complex for me :-(. I tried ktrace on ftpd but only saw the call to sendfile(2). If you give me some guidance I can try to look into problem deeper. I don't have any experience in kernel debugging but would like to learn it. > Ciao, > Sheldon. > -- Michal Mertl mime@traveller.cz To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message