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[72.10.141.65]) by smtp.gmail.com with ESMTPSA id p7-20020ac84087000000b004054b435f8csm3652039qtl.65.2023.07.25.14.04.27 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Jul 2023 14:04:28 -0700 (PDT) From: Maxim Cournoyer Date: Tue, 25 Jul 2023 17:04:26 -0400 Message-ID: <878rb31z51.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2607:f8b0:4864:20::831; envelope-from=maxim.cournoyer@gmail.com; helo=mail-qt1-x831.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Spam-Score: 4.37 X-Migadu-Queue-Id: 2C1D8605C4 X-Migadu-Spam-Score: 4.37 X-Migadu-Scanner: mx0.migadu.com X-TUID: xHYTsrCmQnOJ Hello, It'd be useful to be able to specify POSIX capabilities a Shepherd service should have, for example for an unprivileged process to be able to bind to ports lower than 1024. This came up while reviewing #63082, which patch 10/16 (now dropped because of loss of functionality) suggested to let the user/group change be effected by Shepherd instead of by MPD itself (see: https://issues.guix.gnu.org/63082#98). I know that NixOS has some mechanism to do that; I think it was a simple shell script wrapper setting the capabilities, but that's all I remember. -- Thanks, Maxim