From patchwork Sun Apr 21 09:42:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christopher Baines X-Patchwork-Id: 63250 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 C444027BBE2; Sun, 21 Apr 2024 10:44:32 +0100 (BST) X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on mira.cbaines.net X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_PASS 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 2511827BBEB for ; Sun, 21 Apr 2024 10:44:30 +0100 (BST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ryTk0-0005dv-Pr; Sun, 21 Apr 2024 05:44:08 -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 1ryTjk-0005QY-WE for guix-patches@gnu.org; Sun, 21 Apr 2024 05:43:53 -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 1ryTjk-0002mP-1G for guix-patches@gnu.org; Sun, 21 Apr 2024 05:43:52 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ryTjz-0006Uw-7E for guix-patches@gnu.org; Sun, 21 Apr 2024 05:44:07 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#70494] [PATCH 13/23] syscalls: Add unshare. Resent-From: Christopher Baines Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Sun, 21 Apr 2024 09:44:07 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 70494 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: 70494@debbugs.gnu.org Received: via spool by 70494-submit@debbugs.gnu.org id=B70494.171369262324634 (code B ref 70494); Sun, 21 Apr 2024 09:44:07 +0000 Received: (at 70494) by debbugs.gnu.org; 21 Apr 2024 09:43:43 +0000 Received: from localhost ([127.0.0.1]:41776 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ryTja-0006Oy-0N for submit@debbugs.gnu.org; Sun, 21 Apr 2024 05:43:42 -0400 Received: from mira.cbaines.net ([212.71.252.8]:43370) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ryTiz-0006IJ-Bv for 70494@debbugs.gnu.org; Sun, 21 Apr 2024 05:43:07 -0400 Received: from localhost (unknown [IPv6:2a02:6b67:d93b:1:254c:b471:debc:14be]) by mira.cbaines.net (Postfix) with ESMTPSA id 3DBF327BBE9 for <70494@debbugs.gnu.org>; Sun, 21 Apr 2024 10:42:48 +0100 (BST) Received: from localhost (localhost [local]) by localhost (OpenSMTPD) with ESMTPA id 5488e2bb for <70494@debbugs.gnu.org>; Sun, 21 Apr 2024 09:42:47 +0000 (UTC) From: Christopher Baines Date: Sun, 21 Apr 2024 10:42:31 +0100 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: <87bk632h36.fsf@cbaines.net> References: <87bk632h36.fsf@cbaines.net> 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 * guix/build/syscalls.scm (unshare): New procedure. Change-Id: I7caad207117b17b349290e680277f650c51d2f3b --- guix/build/syscalls.scm | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 487ee68b43..492a229938 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -36,6 +36,7 @@ (define-module (guix build syscalls) #:use-module (srfi srfi-11) #:use-module (srfi srfi-19) #:use-module (srfi srfi-26) + #:use-module (srfi srfi-71) #:use-module (ice-9 rdelim) #:use-module (ice-9 regex) #:use-module (ice-9 match) @@ -121,6 +122,7 @@ (define-module (guix build syscalls) mkdtemp! fdatasync pivot-root + unshare scandir* getxattr setxattr @@ -1183,6 +1185,16 @@ (define pivot-root (list new-root put-old (strerror err)) (list err))))))) +(define unshare + (false-if-exception + (let ((proc (syscall->procedure int "unshare" (list int)))) + (lambda (flags) + (let ((ret err (proc flags))) + (unless (zero? ret) + (throw 'system-error "unshare" "~d ~d: ~A" + (list flags (strerror err)) + (list err)))))))) + ;;; ;;; Opendir & co.