From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3555996-1521221829-2-9063253148647575703 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES unknown, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521221829; b=DCR99wHUHM2G1t3MAbbJbcTfmK07V+D0fsONS6EWVzzPUZ3 TRUibaVE6kguhbofS0A8vTit2a1M/kQtwt9pbxuuOM7GagMJHG4puOTQaGZTEBdQ NQLPYj5Z2h+J6I6iPywgyRPJJIZgrEq8/hCcIz0SscWWVqlR1kqdKJTWXsL+GVBs pzkBQC0MjrZIyONgHbWmKOOrWOaVvHgs8CQrwiA6FRJALiocFeO+k3wVzIkVE6EV L//Wlo/EbgpwwbIvwjwg/bf/EJLyjrbmMHknstLdkHguxdTrr0LPx+Dkzj8QXFcS diaOez41k+doVa5A73kjQkkz8xK0hwCwNtBoaYg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521221829; bh=J10LuI0Zuex1aXkw+NfALIuE+q 8KWEyPRMe1q8mEuE8=; b=bQRFBbuxU8sqD1DXCfRBmjPfKQM041SgTtjSUkrUJF I4LidZui+saPEH6EC+kZMBYr+/tHzts1jQzJ77I8GHGhaduf2OUtsHY5gimIVkS4 UIxQaXR24G82VlEmsiDx1FZ0W50GNwgC0xZzhpgFjWR2aGEGJzLwDm8ROVEBY2rN af6mL/6vd+Kk4BEeWgiJzTjFkfuOdnOMPqg8dqpLOgM/2HW02BvhZrQwS6GYGieW 3DAr28UPuS4Ea26EIf+V5152XiNK4qAs918KQOxvNI7BFfSln4116om8FuXlhkV2 Fc0tSKHo8IM5JjWwh4t6N0f4hofcXokwXT2B4FQxJEcQ== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751746AbeCPRhG (ORCPT ); Fri, 16 Mar 2018 13:37:06 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:33894 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753515AbeCPP0d (ORCPT ); Fri, 16 Mar 2018 11:26:33 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Russell King , Steven Rostedt , Arnd Bergmann Subject: [PATCH 3.18 14/25] scripts: recordmcount: break hardlinks Date: Fri, 16 Mar 2018 16:23:01 +0100 Message-Id: <20180316152233.338632338@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180316152232.750180431@linuxfoundation.org> References: <20180316152232.750180431@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Russell King commit dd39a26538e37f6c6131e829a4a510787e43c783 upstream. recordmcount edits the file in-place, which can cause problems when using ccache in hardlink mode. Arrange for recordmcount to break a hardlinked object. Link: http://lkml.kernel.org/r/E1a7MVT-0000et-62@rmk-PC.arm.linux.org.uk Cc: stable@vger.kernel.org # 2.6.37+ Signed-off-by: Russell King Signed-off-by: Steven Rostedt Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- scripts/recordmcount.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) --- a/scripts/recordmcount.c +++ b/scripts/recordmcount.c @@ -201,6 +201,20 @@ static void *mmap_file(char const *fname addr = umalloc(sb.st_size); uread(fd_map, addr, sb.st_size); } + if (sb.st_nlink != 1) { + /* file is hard-linked, break the hard link */ + close(fd_map); + if (unlink(fname) < 0) { + perror(fname); + fail_file(); + } + fd_map = open(fname, O_RDWR | O_CREAT, sb.st_mode); + if (fd_map < 0) { + perror(fname); + fail_file(); + } + uwrite(fd_map, addr, sb.st_size); + } return addr; }