From patchwork Sun Mar 23 14:24:54 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ludovic_Court=C3=A8s?= X-Patchwork-Id: 40733 Return-Path: X-Original-To: patchwork@mira.cbaines.net Delivered-To: patchwork@mira.cbaines.net Received: by mira.cbaines.net (Postfix, from userid 113) id ED35F27BBE9; Sun, 23 Mar 2025 14:26:39 +0000 (GMT) X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on mira.cbaines.net X-Spam-Level: X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_VALIDITY_CERTIFIED,RCVD_IN_VALIDITY_RPBL,RCVD_IN_VALIDITY_SAFE, SPF_HELO_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mira.cbaines.net (Postfix) with ESMTPS id 7B79127BBE2 for ; Sun, 23 Mar 2025 14:26:38 +0000 (GMT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1twMHE-0002z1-1w; Sun, 23 Mar 2025 10:26:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1twMHC-0002ys-57 for guix-patches@gnu.org; Sun, 23 Mar 2025 10:26:10 -0400 Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1twMHB-0005Ux-Q2 for guix-patches@gnu.org; Sun, 23 Mar 2025 10:26:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=debbugs.gnu.org; s=debbugs-gnu-org; h=MIME-Version:References:In-Reply-To:Date:From:To:Subject; bh=gj2HkSqKqMC6OnWJO11zAMx01vOVuopEBzKWBjgHWEs=; b=A2eA0xFiHCWLApAF84gGAubOV0zb0Z674owyk9P3lBQN1RH2/jDW5dvjm8AlminrV3g7ajaRoT24lBm7jP54MQL6wN2oA7G+vC5brjyeuSkLF6wu0GPNkUFPCs8RdjSyZo6qD4dnbceCMZrNWS/tRC3xR9r83igayfIffs/V/V98ZE9aP8WAAAOPGxwoTsf1smArlvhpEGJuFkOSB4oYj0AeqqKsHnL79tzUVIPlQFIybmmKoc2y2JI8PexFbcMy60NAPMOowcjpeziNCDteMydcA+BWUSTlRJS61I1Wa6S2DJxuD23AXiapwmFKIjJa42k11xDN6E5mAe+LYuP+6A==; Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1twMHB-0005Wq-GO for guix-patches@gnu.org; Sun, 23 Mar 2025 10:26:09 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#75810] [PATCH v8 01/16] daemon: Use =?utf-8?b?4oCYY2xvc2VfcmFu?= =?utf-8?b?Z2XigJk=?= where available. Resent-From: Ludovic =?utf-8?q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Sun, 23 Mar 2025 14:26:09 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 75810 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: 75810@debbugs.gnu.org Cc: Ludovic =?utf-8?q?Court=C3=A8s?= Received: via spool by 75810-submit@debbugs.gnu.org id=B75810.174273995921115 (code B ref 75810); Sun, 23 Mar 2025 14:26:09 +0000 Received: (at 75810) by debbugs.gnu.org; 23 Mar 2025 14:25:59 +0000 Received: from localhost ([127.0.0.1]:51862 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1twMH0-0005UH-6L for submit@debbugs.gnu.org; Sun, 23 Mar 2025 10:25:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40396) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1twMGb-0005P1-R4 for 75810@debbugs.gnu.org; Sun, 23 Mar 2025 10:25:35 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1twMGW-0005RV-B8; Sun, 23 Mar 2025 10:25:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:References:In-Reply-To:Date:Subject:To: From; bh=gj2HkSqKqMC6OnWJO11zAMx01vOVuopEBzKWBjgHWEs=; b=aNt5iQSsPHOZujs2lvL9 G2jeg5PWxpNEanvL+KVZ/pCz31hO9g4CAonfss656sv0aK2wmvoHCPvCa4TS73nJV/eDGrjE/fnhh JuJ++/nCGGEbbPTb3k6KWSvI4HPsjaf8iE1loQSyCeiiH/CJaSqFeiNp3QmPEriC87cEojFXRe4ms 99m1glcADwX+QeiJ/IhRrzyIPbnMnTUGBOyN4f8NRaz10RVHzJpY5K4jArTcjuRKVeYSOkm9mykhq DmCy311K7IUtT2gvJGTtX3NR8qgrXsIDC3urQOdLgK2uASUWq2eSYgscf0i+KKBFPK8A0kdjo7jaQ fOlC2V5FAMKFOQ==; From: Ludovic =?utf-8?q?Court=C3=A8s?= Date: Sun, 23 Mar 2025 15:24:54 +0100 Message-ID: <7f506f187a098122046a0eb7b84f55c88891ba88.1742739609.git.ludo@gnu.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+patchwork=mira.cbaines.net@gnu.org Sender: guix-patches-bounces+patchwork=mira.cbaines.net@gnu.org X-getmail-retrieved-from-mailbox: Patches * nix/libutil/util.cc (closeMostFDs) [HAVE_CLOSE_RANGE]: Use ‘close_range’ when ‘exceptions’ is empty. * config-daemon.ac: Check for and the ‘close_range’ symbol. Change-Id: I12fa3bde58b003fcce5ea5a1fee1dcf9a92c0359 --- config-daemon.ac | 5 +++-- nix/libutil/util.cc | 23 +++++++++++++++++------ 2 files changed, 20 insertions(+), 8 deletions(-) diff --git a/config-daemon.ac b/config-daemon.ac index 6731c68bc3..4e949bc88a 100644 --- a/config-daemon.ac +++ b/config-daemon.ac @@ -78,7 +78,8 @@ if test "x$guix_build_daemon" = "xyes"; then dnl Chroot support. AC_CHECK_FUNCS([chroot unshare]) - AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h]) + AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h \ + linux/close_range.h]) if test "x$ac_cv_func_chroot" != "xyes"; then AC_MSG_ERROR(['chroot' function missing, bailing out]) @@ -95,7 +96,7 @@ if test "x$guix_build_daemon" = "xyes"; then dnl strsignal: for error reporting. dnl statx: fine-grain 'stat' call, new in glibc 2.28. AC_CHECK_FUNCS([lutimes lchown posix_fallocate sched_setaffinity \ - statvfs nanosleep strsignal statx]) + statvfs nanosleep strsignal statx close_range]) dnl Check for . AC_LANG_PUSH(C++) diff --git a/nix/libutil/util.cc b/nix/libutil/util.cc index 3206dea11b..eb2d16e1cc 100644 --- a/nix/libutil/util.cc +++ b/nix/libutil/util.cc @@ -23,6 +23,10 @@ #include #endif +#ifdef HAVE_LINUX_CLOSE_RANGE_H +# include +#endif + extern char * * environ; @@ -1087,12 +1091,19 @@ string runProgram(Path program, bool searchPath, const Strings & args) void closeMostFDs(const set & exceptions) { - int maxFD = 0; - maxFD = sysconf(_SC_OPEN_MAX); - for (int fd = 0; fd < maxFD; ++fd) - if (fd != STDIN_FILENO && fd != STDOUT_FILENO && fd != STDERR_FILENO - && exceptions.find(fd) == exceptions.end()) - close(fd); /* ignore result */ +#ifdef HAVE_CLOSE_RANGE + if (exceptions.empty()) + close_range(3, ~0U, 0); + else +#endif + { + int maxFD = 0; + maxFD = sysconf(_SC_OPEN_MAX); + for (int fd = 0; fd < maxFD; ++fd) + if (fd != STDIN_FILENO && fd != STDOUT_FILENO && fd != STDERR_FILENO + && exceptions.find(fd) == exceptions.end()) + close(fd); /* ignore result */ + } }