From f8a8e0fe1653d4bd998a33f013ea2583b4a32a00 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 13 Jul 2015 16:07:59 +0200 Subject: guix build: Add '--substitute-urls' client option. * guix/scripts/build.scm (%standard-build-options, show-build-options-help): Add --substitute-urls=URLS. (set-build-options-from-command-line): Honor it. * guix/store.scm (%default-substitute-urls): Make public. * doc/guix.texi (Substitutes): Add xref to the client --substitute-urls option. (Invoking guix build): Document it. (Invoking guix-daemon): Add 'daemon-substitute-urls' anchor. --- doc/guix.texi | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) (limited to 'doc') diff --git a/doc/guix.texi b/doc/guix.texi index 454dde68ff..7b1d18a151 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -760,6 +760,7 @@ explicitly enable substitution @i{via} the @code{set-build-options} remote procedure call (@pxref{The Store}). @item --substitute-urls=@var{urls} +@anchor{daemon-substitute-urls} Consider @var{urls} the default whitespace-separated list of substitute source URLs. When this option is omitted, @indicateurl{http://hydra.gnu.org} is used. @@ -1434,9 +1435,12 @@ also result from derivation builds, can be available as substitutes. The @code{hydra.gnu.org} server is a front-end to a build farm that builds packages from the GNU distribution continuously for some architectures, and makes them available as substitutes. This is the -default source of substitutes; it can be overridden by passing -@command{guix-daemon} the @code{--substitute-urls} option -(@pxref{Invoking guix-daemon}). +default source of substitutes; it can be overridden by passing the +@option{--substitute-urls} option either to @command{guix-daemon} +(@pxref{daemon-substitute-urls,, @code{guix-daemon --substitute-urls}}) +or to client tools such as @command{guix package} +(@pxref{client-substitute-urls,, client @option{--substitute-urls} +option}). @cindex security @cindex digital signatures @@ -3584,6 +3588,16 @@ Do not build the derivations. When substituting a pre-built binary fails, fall back to building packages locally. +@item --substitute-urls=@var{urls} +@anchor{client-substitute-urls} +Consider @var{urls} the whitespace-separated list of substitute source +URLs, overriding the default list of URLs of @command{guix-daemon} +(@pxref{daemon-substitute-urls,, @command{guix-daemon} URLs}). + +This means that substitutes may be downloaded from @var{urls}, provided +they are signed by a key authorized by the system administrator +(@pxref{Substitutes}). + @item --no-substitutes Do not use substitutes for build products. That is, always build things locally instead of allowing downloads of pre-built binaries -- cgit v1.2.3 From 661a1d7924e174a28e0e21bf516aa1a8a44dad73 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Tue, 14 Jul 2015 15:06:46 +0200 Subject: file-systems: Allow users to specify file system UUIDs as strings. Fixes . Reported by Mark H Weaver . * gnu/system/file-systems.scm (%uuid-rx): New variable. (string->uuid): New procedure. (uuid): New macro. * tests/file-systems.scm: New file. * Makefile.am (SCM_TESTS): Add it. * doc/guix.texi (File Systems): Give an example of UUID. --- Makefile.am | 1 + doc/guix.texi | 18 +++++++++++++- gnu/system/file-systems.scm | 57 +++++++++++++++++++++++++++++++++++++++++++++ tests/file-systems.scm | 46 ++++++++++++++++++++++++++++++++++++ 4 files changed, 121 insertions(+), 1 deletion(-) create mode 100644 tests/file-systems.scm (limited to 'doc') diff --git a/Makefile.am b/Makefile.am index 7059a8f594..5cf9314014 100644 --- a/Makefile.am +++ b/Makefile.am @@ -203,6 +203,7 @@ SCM_TESTS = \ tests/lint.scm \ tests/publish.scm \ tests/size.scm \ + tests/file-systems.scm \ tests/containers.scm if HAVE_GUILE_JSON diff --git a/doc/guix.texi b/doc/guix.texi index 7b1d18a151..ad5b38af31 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -4963,8 +4963,24 @@ interpreted as a file name; when it is @code{label}, then @code{device} is interpreted as a partition label name; when it is @code{uuid}, @code{device} is interpreted as a partition unique identifier (UUID). +UUIDs may be converted from their string representation (as shown by the +@command{tune2fs -l} command) using the @code{uuid} form, like this: + +@example +(file-system + (mount-point "/home") + (type "ext4") + (title 'uuid) + (device (uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb"))) +@end example + The @code{label} and @code{uuid} options offer a way to refer to disk -partitions without having to hard-code their actual device name. +partitions without having to hard-code their actual device +name@footnote{Note that, while it is tempting to use +@file{/dev/disk/by-uuid} and similar device names to achieve the same +result, this is not recommended: These special device nodes are created +by the udev daemon and may be unavailable at the time the device is +mounted.}. However, when a file system's source is a mapped device (@pxref{Mapped Devices}), its @code{device} field @emph{must} refer to the mapped diff --git a/gnu/system/file-systems.scm b/gnu/system/file-systems.scm index 33926444b6..ece8fb41e6 100644 --- a/gnu/system/file-systems.scm +++ b/gnu/system/file-systems.scm @@ -18,9 +18,13 @@ (define-module (gnu system file-systems) #:use-module (ice-9 match) + #:use-module (ice-9 regex) #:use-module (guix gexp) #:use-module (guix records) #:use-module (guix store) + #:use-module (rnrs bytevectors) + #:use-module ((gnu build file-systems) #:select (uuid->string)) + #:re-export (uuid->string) #:export ( file-system file-system? @@ -35,6 +39,8 @@ (define-module (gnu system file-systems) file-system-create-mount-point? file-system->spec + string->uuid + uuid %fuse-control-file-system %binary-format-file-system @@ -106,6 +112,57 @@ (define (file-system->spec fs) (($ device title mount-point type flags options _ check?) (list device title mount-point type flags options check?)))) +(define %uuid-rx + ;; The regexp of a UUID. + (make-regexp "^([[:xdigit:]]{8})-([[:xdigit:]]{4})-([[:xdigit:]]{4})-([[:xdigit:]]{4})-([[:xdigit:]]{12})$")) + +(define (string->uuid str) + "Parse STR as a DCE UUID (see ) and +return its contents as a 16-byte bytevector. Return #f if STR is not a valid +UUID representation." + (and=> (regexp-exec %uuid-rx str) + (lambda (match) + (letrec-syntax ((hex->number + (syntax-rules () + ((_ index) + (string->number (match:substring match index) + 16)))) + (put! + (syntax-rules () + ((_ bv index (number len) rest ...) + (begin + (bytevector-uint-set! bv index number + (endianness big) len) + (put! bv (+ index len) rest ...))) + ((_ bv index) + bv)))) + (let ((time-low (hex->number 1)) + (time-mid (hex->number 2)) + (time-hi (hex->number 3)) + (clock-seq (hex->number 4)) + (node (hex->number 5)) + (uuid (make-bytevector 16))) + (put! uuid 0 + (time-low 4) (time-mid 2) (time-hi 2) + (clock-seq 2) (node 6))))))) + +(define-syntax uuid + (lambda (s) + "Return the bytevector corresponding to the given UUID representation." + (syntax-case s () + ((_ str) + (string? (syntax->datum #'str)) + ;; A literal string: do the conversion at expansion time. + (with-syntax ((bv (string->uuid (syntax->datum #'str)))) + #''bv)) + ((_ str) + #'(string->uuid str))))) + + +;;; +;;; Common file systems. +;;; + (define %fuse-control-file-system ;; Control file system for Linux' file systems in user-space (FUSE). (file-system diff --git a/tests/file-systems.scm b/tests/file-systems.scm new file mode 100644 index 0000000000..d445b4971f --- /dev/null +++ b/tests/file-systems.scm @@ -0,0 +1,46 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2015 Ludovic Courtès +;;; +;;; This file is part of GNU Guix. +;;; +;;; GNU Guix is free software; you can redistribute it and/or modify it +;;; under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 3 of the License, or (at +;;; your option) any later version. +;;; +;;; GNU Guix is distributed in the hope that it will be useful, but +;;; WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;;; GNU General Public License for more details. +;;; +;;; You should have received a copy of the GNU General Public License +;;; along with GNU Guix. If not, see . + +(define-module (test-file-systems) + #:use-module (gnu system file-systems) + #:use-module (srfi srfi-64) + #:use-module (rnrs bytevectors)) + +;; Test the (gnu system file-systems) module. + +(test-begin "file-systems") + +(test-equal "uuid->string" + "c5307e6b-d1ba-499d-89c5-cb0b143577c4" + (uuid->string + #vu8(197 48 126 107 209 186 73 157 137 197 203 11 20 53 119 196))) + +(test-equal "string->uuid" + '(16 "4dab5feb-d176-45de-b287-9b0a6e4c01cb") + (let ((uuid (string->uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb"))) + (list (bytevector-length uuid) (uuid->string uuid)))) + +(test-assert "uuid" + (let ((str "4dab5feb-d176-45de-b287-9b0a6e4c01cb")) + (bytevector=? (uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb") + (string->uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb")))) + +(test-end) + + +(exit (= (test-runner-fail-count (test-runner-current)) 0)) -- cgit v1.2.3