Received: (at 9800) by debbugs.gnu.org; 7 Feb 2022 00:10:51 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Feb 06 19:10:51 2022 Received: from localhost ([127.0.0.1]:40300 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1nGrcJ-0002RD-Fi for submit <at> debbugs.gnu.org; Sun, 06 Feb 2022 19:10:51 -0500 Received: from quimby.gnus.org ([95.216.78.240]:33516) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1nGrcI-0002Qy-7Z for 9800 <at> debbugs.gnu.org; Sun, 06 Feb 2022 19:10:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=++M9zTOPhNU/a6XQisgHk4SyXEg+lMdjr0mfdGgMucM=; b=jhzJfR8rTS8YKfo/yr+qPAl96X kiOJ6NPxlcMnKlQgkI2BduwvEBGHVD0xBjXJwUfBApLkxPOVlg3w1Aj30BxDKwzTuEL3MqmE7x0as cATcJ232MuaaWf6W9nO0v9JIo+a04f+O6cdG2biloOPARt4DA/lQtEujIH9PJ6VKNBSM=; Received: from [84.212.220.105] (helo=giant) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1nGrc9-0001Py-0B; Mon, 07 Feb 2022 01:10:44 +0100 From: Lars Ingebrigtsen <larsi@HIDDEN> To: Juri Linkov <juri@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem References: <877h40vb8h.fsf@HIDDEN> X-Now-Playing: The Rolling Stones's _Black and Blue_: "Fool to cry" Date: Mon, 07 Feb 2022 01:10:38 +0100 In-Reply-To: <877h40vb8h.fsf@HIDDEN> (Juri Linkov's message of "Thu, 20 Oct 2011 01:59:42 +0300") Message-ID: <87czjz35a9.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Juri Linkov <juri@HIDDEN> writes: > Large files from the /proc filesystem are visited incompletely, > their file buffers are truncated at the position 65536. It seems like this issue has been exacerbated somewhat since this was reported. Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 9800 Cc: 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Juri Linkov <juri@HIDDEN> writes: > Large files from the /proc filesystem are visited incompletely, > their file buffers are truncated at the position 65536. It seems like this issue has been exacerbated somewhat since this was reported. (with-temp-buffer (insert-file-contents "/proc/cpuinfo") (buffer-size)) => 16384 (with-temp-buffer (call-process "cat" nil t nil "/proc/cpuinfo") (buffer-size)) => 24626 But perhaps it's dependent on the block size. (This is on Debian/bookworm with Emacs 29.) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 4 Nov 2011 10:56:57 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Nov 04 06:56:57 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RMHSD-0006GK-Ft for submit <at> debbugs.gnu.org; Fri, 04 Nov 2011 06:56:57 -0400 Received: from mtaout23.012.net.il ([80.179.55.175]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eliz@HIDDEN>) id 1RMHSA-0006G8-0M for 9800 <at> debbugs.gnu.org; Fri, 04 Nov 2011 06:56:55 -0400 Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0LU400800U600100@HIDDEN> for 9800 <at> debbugs.gnu.org; Fri, 04 Nov 2011 12:54:18 +0200 (IST) Received: from HOME-C4E4A596F7 ([84.228.70.69]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LU4007I3UAHQ5C0@HIDDEN>; Fri, 04 Nov 2011 12:54:18 +0200 (IST) Date: Fri, 04 Nov 2011 12:54:22 +0200 From: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem In-reply-to: <87zkgcqm16.fsf@HIDDEN> X-012-Sender: halo1@HIDDEN To: Juri Linkov <juri@HIDDEN> Message-id: <83lirwkvj5.fsf@HIDDEN> References: <877h40vb8h.fsf@HIDDEN> <4EA4D31B.4050604@HIDDEN> <m3y5vxj6bc.fsf@HIDDEN> <87zkgcqm16.fsf@HIDDEN> X-Spam-Score: -1.7 (-) X-Debbugs-Envelope-To: 9800 Cc: larsi@HIDDEN, eggert@HIDDEN, 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: Eli Zaretskii <eliz@HIDDEN> List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -1.7 (-) > From: Juri Linkov <juri@HIDDEN> > Date: Fri, 04 Nov 2011 11:36:01 +0200 > Cc: Paul Eggert <eggert@HIDDEN>, 9800 <at> debbugs.gnu.org > > >> It strikes me that regular files can go as you read them, too, > >> and that Emacs is not doing this properly. That is, Emacs should > >> be fixed so that it continues to read from a growing regular file > >> until a proper EOF is reached (i.e., until read returns 0). > > > > Sounds like a good idea, but remember to bail out some time before > > reading the infinitely big files to the very end. :-) > > Maybe limit the reading by the value of `large-file-warning-threshold'. IMO, that value is ridiculously low for such use. Maybe multiply it by some large factor.
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 4 Nov 2011 10:02:01 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Nov 04 06:02:01 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RMGb2-0004wW-De for submit <at> debbugs.gnu.org; Fri, 04 Nov 2011 06:02:01 -0400 Received: from smarty.dreamhost.com ([208.113.175.8]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <juri@HIDDEN>) id 1RMGaz-0004wK-Sg for 9800 <at> debbugs.gnu.org; Fri, 04 Nov 2011 06:01:58 -0400 Received: from ps18281.dreamhostps.com (ps18281.dreamhost.com [69.163.218.105]) by smarty.dreamhost.com (Postfix) with ESMTP id C29D26E808B; Fri, 4 Nov 2011 02:59:23 -0700 (PDT) Received: from localhost (ps18281.dreamhostps.com [69.163.218.105]) by ps18281.dreamhostps.com (Postfix) with ESMTP id A83AC451C59E; Fri, 4 Nov 2011 02:59:22 -0700 (PDT) From: Juri Linkov <juri@HIDDEN> To: Lars Magne Ingebrigtsen <larsi@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem Organization: JURTA References: <877h40vb8h.fsf@HIDDEN> <4EA4D31B.4050604@HIDDEN> <m3y5vxj6bc.fsf@HIDDEN> Date: Fri, 04 Nov 2011 11:36:01 +0200 In-Reply-To: <m3y5vxj6bc.fsf@HIDDEN> (Lars Magne Ingebrigtsen's message of "Thu, 03 Nov 2011 21:32:07 +0100") Message-ID: <87zkgcqm16.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.91 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -2.7 (--) X-Debbugs-Envelope-To: 9800 Cc: Paul Eggert <eggert@HIDDEN>, 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.7 (--) >> It strikes me that regular files can go as you read them, too, >> and that Emacs is not doing this properly. That is, Emacs should >> be fixed so that it continues to read from a growing regular file >> until a proper EOF is reached (i.e., until read returns 0). > > Sounds like a good idea, but remember to bail out some time before > reading the infinitely big files to the very end. :-) Maybe limit the reading by the value of `large-file-warning-threshold'.
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 3 Nov 2011 20:34:58 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Nov 03 16:34:58 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RM3zz-0002eo-Oj for submit <at> debbugs.gnu.org; Thu, 03 Nov 2011 16:34:57 -0400 Received: from hermes.netfonds.no ([80.91.224.195]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <larsi@HIDDEN>) id 1RM3zu-0002eU-Qu for 9800 <at> debbugs.gnu.org; Thu, 03 Nov 2011 16:34:53 -0400 Received: from cm-84.215.51.58.getinternet.no ([84.215.51.58] helo=stories.gnus.org) by hermes.netfonds.no with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from <larsi@HIDDEN>) id 1RM3xO-0003gU-E3; Thu, 03 Nov 2011 21:32:14 +0100 From: Lars Magne Ingebrigtsen <larsi@HIDDEN> To: Paul Eggert <eggert@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem In-Reply-To: <4EA4D31B.4050604@HIDDEN> (Paul Eggert's message of "Sun, 23 Oct 2011 19:53:15 -0700") Date: Thu, 03 Nov 2011 21:32:07 +0100 Message-ID: <m3y5vxj6bc.fsf@HIDDEN> References: <877h40vb8h.fsf@HIDDEN> <4EA4D31B.4050604@HIDDEN> User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.90 (gnu/linux) X-Now-Playing: Kissing the Pink's _Naked_: "Broken Body" MIME-Version: 1.0 Content-Type: text/plain X-MailScanner-ID: 1RM3xO-0003gU-E3 X-Netfonds-MailScanner: Found to be clean X-Netfonds-MailScanner-From: larsi@HIDDEN MailScanner-NULL-Check: 1320957134.48966@6wI8bV8ANOkyPtjKhdqK1g X-Spam-Status: No X-Spam-Score: -2.6 (--) X-Debbugs-Envelope-To: 9800 Cc: 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.6 (--) Paul Eggert <eggert@HIDDEN> writes: > It strikes me that regular files can go as you read them, too, > and that Emacs is not doing this properly. That is, Emacs should > be fixed so that it continues to read from a growing regular file > until a proper EOF is reached (i.e., until read returns 0). Sounds like a good idea, but remember to bail out some time before reading the infinitely big files to the very end. :-) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog http://lars.ingebrigtsen.no/
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 24 Oct 2011 22:04:37 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Oct 24 18:04:37 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RISdI-0006o8-CX for submit <at> debbugs.gnu.org; Mon, 24 Oct 2011 18:04:37 -0400 Received: from smtp.cs.ucla.edu ([131.179.128.62]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eggert@HIDDEN>) id 1RISdF-0006nu-9k for 9800 <at> debbugs.gnu.org; Mon, 24 Oct 2011 18:04:34 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id 6B2E339E8007; Mon, 24 Oct 2011 15:02:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id X8Jn+A0aHDKB; Mon, 24 Oct 2011 15:02:54 -0700 (PDT) Received: from penguin.cs.ucla.edu (Penguin.CS.UCLA.EDU [131.179.64.200]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id 2637439E8006; Mon, 24 Oct 2011 15:02:54 -0700 (PDT) Message-ID: <4EA5E08D.8070903@HIDDEN> Date: Mon, 24 Oct 2011 15:02:53 -0700 From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0) Gecko/20110927 Thunderbird/7.0 MIME-Version: 1.0 To: rms@HIDDEN Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem References: <877h40vb8h.fsf@HIDDEN> <4EA4D31B.4050604@HIDDEN> <E1RISPO-0007Eu-TE@HIDDEN> In-Reply-To: <E1RISPO-0007Eu-TE@HIDDEN> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-Spam-Score: -3.1 (---) X-Debbugs-Envelope-To: 9800 Cc: 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -3.1 (---) On 10/24/11 14:50, Richard Stallman wrote: > I think there was a reason for doing it this way. Perhaps so as to > allocate the space before reading the file. Yes, that sounds right. And in the typical case where the file is not growing, that allocates space efficiently. If the file is growing, though, it's OK to allocate more space after discovering that the initial allocation was too small.
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
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Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc
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It strikes me that regular files can go as you read them, too,
and that Emacs is not doing this properly. That is, Emacs should
be fixed so that it continues to read from a growing regular file
until a proper EOF is reached (i.e., until read returns 0).
I think there was a reason for doing it this way. Perhaps so as to
allocate the space before reading the file.
--
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
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bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 24 Oct 2011 02:54:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Oct 23 22:54:50 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RIAgb-0000Ja-3D for submit <at> debbugs.gnu.org; Sun, 23 Oct 2011 22:54:49 -0400 Received: from smtp.cs.ucla.edu ([131.179.128.62]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eggert@HIDDEN>) id 1RIAgZ-0000JP-8J for 9800 <at> debbugs.gnu.org; Sun, 23 Oct 2011 22:54:47 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id E563CA60002 for <9800 <at> debbugs.gnu.org>; Sun, 23 Oct 2011 19:53:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G00S8lMwydDo for <9800 <at> debbugs.gnu.org>; Sun, 23 Oct 2011 19:53:12 -0700 (PDT) Received: from [192.168.1.10] (pool-71-189-109-235.lsanca.fios.verizon.net [71.189.109.235]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id 9D97239E8006 for <9800 <at> debbugs.gnu.org>; Sun, 23 Oct 2011 19:53:12 -0700 (PDT) Message-ID: <4EA4D31B.4050604@HIDDEN> Date: Sun, 23 Oct 2011 19:53:15 -0700 From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: 9800 <at> debbugs.gnu.org Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Score: -2.9 (--) X-Debbugs-Envelope-To: 9800 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.9 (--) It strikes me that regular files can go as you read them, too, and that Emacs is not doing this properly. That is, Emacs should be fixed so that it continues to read from a growing regular file until a proper EOF is reached (i.e., until read returns 0). If Emacs is fixed in this way, it will read these /proc files correctly too.
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 20 Oct 2011 08:46:16 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Oct 20 04:46:16 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RGoGU-0003uL-Nx for submit <at> debbugs.gnu.org; Thu, 20 Oct 2011 04:46:16 -0400 Received: from mail-out.m-online.net ([212.18.0.9]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <whitebox@HIDDEN>) id 1RGoGN-0003ts-3P for 9800 <at> debbugs.gnu.org; Thu, 20 Oct 2011 04:46:08 -0400 Received: from frontend1.mail.m-online.net (unknown [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id 1BC481C02B74; Thu, 20 Oct 2011 10:44:53 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.8.164]) by mail.m-online.net (Postfix) with ESMTP id C6AE11C0037F; Thu, 20 Oct 2011 10:44:53 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.180]) by localhost (dynscan1.mail.m-online.net [192.168.8.164]) (amavisd-new, port 10024) with ESMTP id 6OE3iqTNZW77; Thu, 20 Oct 2011 10:44:52 +0200 (CEST) Received: from hase.home (ppp-88-217-119-26.dynamic.mnet-online.de [88.217.119.26]) by mail.mnet-online.de (Postfix) with ESMTP; Thu, 20 Oct 2011 10:44:52 +0200 (CEST) From: Andreas Schwab <schwab@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem References: <877h40vb8h.fsf@HIDDEN> <83ehy8t6lo.fsf@HIDDEN> X-Yow: It's OKAY --- I'm an INTELLECTUAL, too. Date: Thu, 20 Oct 2011 10:44:57 +0200 In-Reply-To: <83ehy8t6lo.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 20 Oct 2011 10:22:43 +0200") Message-ID: <m3pqhsdpbq.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Score: -2.6 (--) X-Debbugs-Envelope-To: 9800 Cc: Juri Linkov <juri@HIDDEN>, 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.6 (--) Eli Zaretskii <eliz@HIDDEN> writes: > Does lseek work on these files? No. The contents are completely dynamic, generated on-the-fly when reading. > Or we could treat those files as non-regular, That is the only option. Andreas. -- Andreas Schwab, schwab@HIDDEN GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at 9800) by debbugs.gnu.org; 20 Oct 2011 08:24:04 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Oct 20 04:24:04 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RGnv1-0003O7-Ji for submit <at> debbugs.gnu.org; Thu, 20 Oct 2011 04:24:03 -0400 Received: from mtaout20.012.net.il ([80.179.55.166]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eliz@HIDDEN>) id 1RGnuz-0003Na-4u for 9800 <at> debbugs.gnu.org; Thu, 20 Oct 2011 04:24:02 -0400 Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0LTC00J00V6NUD00@HIDDEN> for 9800 <at> debbugs.gnu.org; Thu, 20 Oct 2011 10:22:41 +0200 (IST) Received: from HOME-C4E4A596F7 ([77.124.212.197]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LTC00JKOV9SJZ90@HIDDEN>; Thu, 20 Oct 2011 10:22:41 +0200 (IST) Date: Thu, 20 Oct 2011 10:22:43 +0200 From: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem In-reply-to: <877h40vb8h.fsf@HIDDEN> X-012-Sender: halo1@HIDDEN To: Juri Linkov <juri@HIDDEN> Message-id: <83ehy8t6lo.fsf@HIDDEN> References: <877h40vb8h.fsf@HIDDEN> X-Spam-Score: -2.1 (--) X-Debbugs-Envelope-To: 9800 Cc: 9800 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: Eli Zaretskii <eliz@HIDDEN> List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.1 (--) > From: Juri Linkov <juri@HIDDEN> > Date: Thu, 20 Oct 2011 01:59:42 +0300 > > Large files from the /proc filesystem are visited incompletely, > their file buffers are truncated at the position 65536. > One possible test case to reproduce this is to load enough libraries > with e.g. (imagemagick-register-types) and visit Emacs's maps file > in /proc/$PID/maps. > > Andreas said in http://lists.gnu.org/archive/html/emacs-devel/2011-10/msg00782.html > that it's due to this code in `insert-file-contents': > > /* The file size returned from stat may be zero, but data > may be readable nonetheless, for example when this is a > file in the /proc filesystem. */ > if (end_offset == 0) > end_offset = READ_BUF_SIZE; > > How this could be fixed? Should it keep reading while more data can be > read from the file? Does lseek work on these files? If so, we could use something like lseek (fd, 0L, SEEK_END) to find its size. Or we could treat those files as non-regular, where we set end_offset to TYPE_MAXIMUM (off_t) -- would that work with these files?
bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 19 Oct 2011 23:02:55 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Oct 19 19:02:55 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RGf9z-0006mJ-2Z for submit <at> debbugs.gnu.org; Wed, 19 Oct 2011 19:02:55 -0400 Received: from eggs.gnu.org ([140.186.70.92]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <juri@HIDDEN>) id 1RGf9w-0006m7-JD for submit <at> debbugs.gnu.org; Wed, 19 Oct 2011 19:02:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <juri@HIDDEN>) id 1RGf8n-0007m3-8e for submit <at> debbugs.gnu.org; Wed, 19 Oct 2011 19:01:42 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from lists.gnu.org ([140.186.70.17]:51120) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <juri@HIDDEN>) id 1RGf8n-0007lz-7G for submit <at> debbugs.gnu.org; Wed, 19 Oct 2011 19:01:41 -0400 Received: from eggs.gnu.org ([140.186.70.92]:54804) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <juri@HIDDEN>) id 1RGf8m-0000u7-1r for bug-gnu-emacs@HIDDEN; Wed, 19 Oct 2011 19:01:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <juri@HIDDEN>) id 1RGf8i-0007l0-LC for bug-gnu-emacs@HIDDEN; Wed, 19 Oct 2011 19:01:39 -0400 Received: from smarty.dreamhost.com ([208.113.175.8]:59312) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <juri@HIDDEN>) id 1RGf8i-0007kv-Du for bug-gnu-emacs@HIDDEN; Wed, 19 Oct 2011 19:01:36 -0400 Received: from ps18281.dreamhostps.com (ps18281.dreamhost.com [69.163.218.105]) by smarty.dreamhost.com (Postfix) with ESMTP id 8DFA56E808C for <bug-gnu-emacs@HIDDEN>; Wed, 19 Oct 2011 16:01:35 -0700 (PDT) Received: from localhost (ps18281.dreamhostps.com [69.163.218.105]) by ps18281.dreamhostps.com (Postfix) with ESMTP id D8E73AC9400A for <bug-gnu-emacs@HIDDEN>; Wed, 19 Oct 2011 16:01:34 -0700 (PDT) From: Juri Linkov <juri@HIDDEN> To: bug-gnu-emacs@HIDDEN Subject: Incomplete truncated file buffers from the /proc filesystem Organization: JURTA Date: Thu, 20 Oct 2011 01:59:42 +0300 Message-ID: <877h40vb8h.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.90 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.17 X-Spam-Score: -4.6 (----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -4.7 (----) Large files from the /proc filesystem are visited incompletely, their file buffers are truncated at the position 65536. One possible test case to reproduce this is to load enough libraries with e.g. (imagemagick-register-types) and visit Emacs's maps file in /proc/$PID/maps. Andreas said in http://lists.gnu.org/archive/html/emacs-devel/2011-10/msg00782.html that it's due to this code in `insert-file-contents': /* The file size returned from stat may be zero, but data may be readable nonetheless, for example when this is a file in the /proc filesystem. */ if (end_offset == 0) end_offset = READ_BUF_SIZE; How this could be fixed? Should it keep reading while more data can be read from the file?
Juri Linkov <juri@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#9800; Package emacs.
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