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;; -*- mode: scheme; -*-
;; This is an operating system configuration template
;; for a "bare bones" setup, with no X11 display server.

(use-modules (gnu))
(use-service-modules networking ssh)
(use-package-modules screen ssh)

(operating-system
  (host-name "komputilo")
  (timezone "Europe/Berlin")
  (locale "en_US.utf8")

  ;; Boot in "legacy" BIOS mode, assuming /dev/sdX is the
  ;; target hard disk, and "my-root" is the label of the target
  ;; root file system.
  (bootloader (bootloader-configuration
                (bootloader grub-bootloader)
                (targets '("/dev/sdX"))))
  ;; It's fitting to support the equally bare bones ‘-nographic’
  ;; QEMU option, which also nicely sidesteps forcing QWERTY.
  (kernel-arguments (list "console=ttyS0,115200"))
  (file-systems (cons (file-system
                        (device (file-system-label "my-root"))
                        (mount-point "/")
                        (type "ext4"))
                      %base-file-systems))

  ;; This is where user accounts are specified.  The "root"
  ;; account is implicit, and is initially created with the
  ;; empty password.
  (users (cons (user-account
                (name "alice")
                (comment "Bob's sister")
                (group "users")

                ;; Adding the account to the "wheel" group
                ;; makes it a sudoer.  Adding it to "audio"
                ;; and "video" allows the user to play sound
                ;; and access the webcam.
                (supplementary-groups '("wheel"
                                        "audio" "video")))
               %base-user-accounts))

  ;; Globally-installed packages.
  (packages (cons screen %base-packages))

  ;; Add services to the baseline: a DHCP client and an SSH
  ;; server.  You may wish to add an NTP service here.
  (services (append (list (service dhcp-client-service-type)
                          (service openssh-service-type
                                   (openssh-configuration
                                    (openssh openssh-sans-x)
                                    (port-number 2222))))
                    %base-services)))
and ‘fchownat’ calls to preserve file ownership; this is necessary for chrooted fixed-output derivation builds. * nix/libutil/util.hh: Update comment. Change-Id: Ib59f040e98fed59d1af81d724b874b592cbef156 Ludovic Courtès 2024-03-11daemon: Protect against FD escape when building fixed-output derivations (CVE......This fixes a security issue (CVE-2024-27297) whereby a fixed-output derivation build process could open a writable file descriptor to its output, send it to some outside process for instance over an abstract AF_UNIX socket, which would then allow said process to modify the file in the store after it has been marked as “valid”. Vulnerability discovered by puck <https://github.com/puckipedia>. Nix security advisory: https://github.com/NixOS/nix/security/advisories/GHSA-2ffj-w4mj-pg37 Nix fix: https://github.com/NixOS/nix/commit/244f3eee0bbc7f11e9b383a15ed7368e2c4becc9 * nix/libutil/util.cc (readDirectory): Add variants that take a DIR* and a file descriptor. Rewrite the ‘Path’ variant accordingly. (copyFile, copyFileRecursively): New functions. * nix/libutil/util.hh (copyFileRecursively): New declaration. * nix/libstore/build.cc (DerivationGoal::buildDone): When ‘fixedOutput’ is true, call ‘copyFileRecursively’ followed by ‘rename’ on each output. Change-Id: I7952d41093eed26e123e38c14a4c1424be1ce1c4 Reported-by: Picnoir <picnoir@alternativebit.fr>, Théophane Hufschmitt <theophane.hufschmitt@tweag.io> Change-Id: Idb5f2757f35af86b032a9851cecb19b70227bd88 Ludovic Courtès 2024-01-05daemon: Change default ‘timeout’ and ‘max-silent-time’ values....Having a timeout seems generally preferable as it makes sure build slots are not kept busy for no good reason (few package builds, if any, are expected to exceed these values). * nix/libstore/globals.cc (Settings::Settings): Change ‘maxSilentTime’ and ‘buildTimeout’. * gnu/services/base.scm (<guix-configuration>)[max-silent-time] [timeout]: Change default values. * doc/guix.texi (Invoking guix-daemon, Base Services): Adjust accordingly. Change-Id: I25c50893f3f7fcca451b8f093d9d4d1a15fa58d8 Ludovic Courtès 2023-12-17daemon: Fix my own whitespace errors....This follows up on commit d993ed43b2bae8717437aa27d9d33fd223a6411f and was entirely predictable. The noise, sorry for it. Change-Id: I8ddb8cfe33db3864949f6589cc091616a90ebc5b Tobias Geerinckx-Rice 2023-12-10daemon: Sacrifice builders on OOM....* nix/libstore/build.cc (DerivationGoal::runChild): Maximise our OOM score adjustment. Change-Id: I418c763b499ca16e1ffe3c6033319112b9744f51 Tobias Geerinckx-Rice 2023-12-11daemon: Implement ‘substitute-urls’ RPC....* nix/libstore/worker-protocol.hh (PROTOCOL_VERSION): Bump. (WorkerOp): Add ‘wopSubstituteURLs’. * nix/nix-daemon/nix-daemon.cc (performOp): Implement it. * guix/store.scm (%protocol-version): Bump. (operation-id): Add ‘substitute-urls’. (substitute-urls): New procedure. * tests/store.scm ("substitute-urls, default") ("substitute-urls, client-specified URLs") ("substitute-urls, disabled"): New tests. Change-Id: I2c0119500c3a1eecfa5ebf32463ffb0f173161de Ludovic Courtès 2023-12-04daemon: Simplify “empty status” substitute error message....* nix/libstore/build.cc (SubstitutionGoal::finished): Don’t show what the empty status looks like. Change-Id: Ie898432aeb047aff3d59024de6ed6d18f68903c4 Ludovic Courtès 2023-09-24Revert "build: Add missing guix-gc.timer file to binary tarball."...This reverts commit 69f6edc1a8596d2cb4c67e0435d35633af6f3cbc. The intention is good, but nodist_systemdservice_DATA are meant to be disposable artefacts generated from corresponding ‘.in’ files. etc/guix-gc.timer doesn't fit that description, breaking builds: $ make clean && make … make[2]: *** No rule to make target 'etc/guix-gc.timer', needed by 'all-am'. Stop. Tobias Geerinckx-Rice 2023-09-26daemon: Add “git-download” built-in builder....The new builder makes it possible to break cycles that occurs when the fixed-output derivation for the source of a dependency of ‘git’ would itself depend on ‘git’. * guix/scripts/perform-download.scm (perform-git-download): New procedure. (perform-download): Move fixed-output derivation check to… (guix-perform-download): … here. Invoke ‘perform-download’ or ‘perform-git-download’ depending on what ‘derivation-builder’ returns. * nix/libstore/builtins.cc (builtins): Add “git-download”. * tests/derivations.scm ("built-in-builders"): Update. ("'git-download' built-in builder") ("'git-download' built-in builder, invalid hash") ("'git-download' built-in builder, invalid commit") ("'git-download' built-in builder, not found"): New tests. Ludovic Courtès 2023-09-09daemon: Fix build with GCC 13....The sqlite.hh file uses fixed-width integer types from stdint.h. As such, it needs to include <cstdint>. Without this include, the file doesn't compile successfully with GCC13. See: https://gcc.gnu.org/gcc-13/porting_to.html#header-dep-changes * nix/libstore/sqlite.hh: include <cstdint> Signed-off-by: Sören Tempel <soeren@soeren-tempel.net> Signed-off-by: Ludovic Courtès <ludo@gnu.org> Sören Tempel 2023-08-31build: Add missing guix-gc.timer file to binary tarball....Partially fixes <https://issues.guix.gnu.org/65117>. * nix/local.mk (nodist_systemdservice_DATA): Add etc/guix-gc.timer. Maxim Cournoyer