diff options
Diffstat (limited to 'gnu/system/linux-initrd.scm')
| -rw-r--r-- | gnu/system/linux-initrd.scm | 298 |
1 files changed, 137 insertions, 161 deletions
diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm index 786e068764..6e04ad150f 100644 --- a/gnu/system/linux-initrd.scm +++ b/gnu/system/linux-initrd.scm @@ -18,6 +18,7 @@ (define-module (gnu system linux-initrd) #:use-module (guix monads) + #:use-module (guix gexp) #:use-module (guix utils) #:use-module ((guix store) #:select (%store-prefix)) @@ -52,14 +53,14 @@ (name "guile-initrd") (system (%current-system)) (modules '()) - (inputs '()) + (to-copy '()) (linux #f) (linux-modules '())) "Return a package that contains a Linux initrd (a gzipped cpio archive) containing GUILE and that evaluates EXP upon booting. LINUX-MODULES is a list -of `.ko' file names to be copied from LINUX into the initrd. INPUTS is a list -of additional inputs to be copied in the initrd. MODULES is a list of Guile -module names to be embedded in the initrd." +of `.ko' file names to be copied from LINUX into the initrd. TO-COPY is a +list of additional derivations or packages to copy to the initrd. MODULES is +a list of Guile module names to be embedded in the initrd." ;; General Linux overview in `Documentation/early-userspace/README' and ;; `Documentation/filesystems/ramfs-rootfs-initramfs.txt'. @@ -68,154 +69,129 @@ module names to be embedded in the initrd." ;; Return a regexp that matches STR exactly. (string-append "^" (regexp-quote str) "$")) - (define (files-to-copy) - (mlet %store-monad ((inputs (lower-inputs inputs))) - (return (map (match-lambda - ((_ drv) - (derivation->output-path drv)) - ((_ drv sub-drv) - (derivation->output-path drv sub-drv))) - inputs)))) + (mlet* %store-monad ((source (imported-modules modules)) + (compiled (compiled-modules modules))) + (define builder + ;; TODO: Move most of this code to (guix build linux-initrd). + #~(begin + (use-modules (guix build utils) + (ice-9 pretty-print) + (ice-9 popen) + (ice-9 match) + (ice-9 ftw) + (srfi srfi-26) + (system base compile) + (rnrs bytevectors) + ((system foreign) #:select (sizeof))) - (define (builder to-copy) - `(begin - (use-modules (guix build utils) - (ice-9 pretty-print) - (ice-9 popen) - (ice-9 match) - (ice-9 ftw) - (srfi srfi-26) - (system base compile) - (rnrs bytevectors) - ((system foreign) #:select (sizeof))) + (let ((cpio (string-append #$cpio "/bin/cpio")) + (gzip (string-append #$gzip "/bin/gzip")) + (modules #$source) + (gos #$compiled) + (scm-dir (string-append "share/guile/" (effective-version))) + (go-dir (format #f ".cache/guile/ccache/~a-~a-~a-~a" + (effective-version) + (if (eq? (native-endianness) (endianness little)) + "LE" + "BE") + (sizeof '*) + (effective-version)))) + (mkdir #$output) + (mkdir "contents") + (with-directory-excursion "contents" + (copy-recursively #$guile ".") + (call-with-output-file "init" + (lambda (p) + (format p "#!/bin/guile -ds~%!#~%" #$guile) + (pretty-print '#$exp p))) + (chmod "init" #o555) + (chmod "bin/guile" #o555) - (let ((guile (assoc-ref %build-inputs "guile")) - (cpio (string-append (assoc-ref %build-inputs "cpio") - "/bin/cpio")) - (gzip (string-append (assoc-ref %build-inputs "gzip") - "/bin/gzip")) - (modules (assoc-ref %build-inputs "modules")) - (gos (assoc-ref %build-inputs "modules/compiled")) - (scm-dir (string-append "share/guile/" (effective-version))) - (go-dir (format #f ".cache/guile/ccache/~a-~a-~a-~a" - (effective-version) - (if (eq? (native-endianness) (endianness little)) - "LE" - "BE") - (sizeof '*) - (effective-version))) - (out (assoc-ref %outputs "out"))) - (mkdir out) - (mkdir "contents") - (with-directory-excursion "contents" - (copy-recursively guile ".") - (call-with-output-file "init" - (lambda (p) - (format p "#!/bin/guile -ds~%!#~%" guile) - (pretty-print ',exp p))) - (chmod "init" #o555) - (chmod "bin/guile" #o555) + ;; Copy Guile modules. + (chmod scm-dir #o777) + (copy-recursively modules scm-dir + #:follow-symlinks? #t) + (copy-recursively gos (string-append "lib/guile/" + (effective-version) "/ccache") + #:follow-symlinks? #t) - ;; Copy Guile modules. - (chmod scm-dir #o777) - (copy-recursively modules scm-dir - #:follow-symlinks? #t) - (copy-recursively gos (string-append "lib/guile/" - (effective-version) "/ccache") - #:follow-symlinks? #t) + ;; Compile `init'. + (mkdir-p go-dir) + (set! %load-path (cons modules %load-path)) + (set! %load-compiled-path (cons gos %load-compiled-path)) + (compile-file "init" + #:opts %auto-compilation-options + #:output-file (string-append go-dir "/init.go")) - ;; Compile `init'. - (mkdir-p go-dir) - (set! %load-path (cons modules %load-path)) - (set! %load-compiled-path (cons gos %load-compiled-path)) - (compile-file "init" - #:opts %auto-compilation-options - #:output-file (string-append go-dir "/init.go")) + ;; Copy Linux modules. + (let* ((linux #$linux) + (module-dir (and linux + (string-append linux "/lib/modules")))) + (mkdir "modules") + #$@(map (lambda (module) + #~(match (find-files module-dir + #$(string->regexp module)) + ((file) + (format #t "copying '~a'...~%" file) + (copy-file file (string-append "modules/" + #$module))) + (() + (error "module not found" #$module module-dir)) + ((_ ...) + (error "several modules by that name" + #$module module-dir)))) + linux-modules)) - ;; Copy Linux modules. - (let* ((linux (assoc-ref %build-inputs "linux")) - (module-dir (and linux - (string-append linux "/lib/modules")))) - (mkdir "modules") - ,@(map (lambda (module) - `(match (find-files module-dir - ,(string->regexp module)) - ((file) - (format #t "copying '~a'...~%" file) - (copy-file file (string-append "modules/" - ,module))) - (() - (error "module not found" ,module module-dir)) - ((_ ...) - (error "several modules by that name" - ,module module-dir)))) - linux-modules)) + (let ((store #$(string-append "." (%store-prefix))) + (to-copy '#$to-copy)) + (unless (null? to-copy) + (mkdir-p store)) + ;; XXX: Should we do export-references-graph? + (for-each (lambda (input) + (let ((target + (string-append store "/" + (basename input)))) + (copy-recursively input target))) + to-copy)) - ,@(if (null? to-copy) - '() - `((let ((store ,(string-append "." (%store-prefix)))) - (mkdir-p store) - ;; XXX: Should we do export-references-graph? - (for-each (lambda (input) - (let ((target - (string-append store "/" - (basename input)))) - (copy-recursively input target))) - ',to-copy)))) + ;; Reset the timestamps of all the files that will make it in the + ;; initrd. + (for-each (cut utime <> 0 0 0 0) + (find-files "." ".*")) - ;; Reset the timestamps of all the files that will make it in the - ;; initrd. - (for-each (cut utime <> 0 0 0 0) - (find-files "." ".*")) + (system* cpio "--version") + (let ((pipe (open-pipe* OPEN_WRITE cpio "-o" + "-O" (string-append #$output "/initrd") + "-H" "newc" "--null"))) + (define print0 + (let ((len (string-length "./"))) + (lambda (file) + (format pipe "~a\0" (string-drop file len))))) - (system* cpio "--version") - (let ((pipe (open-pipe* OPEN_WRITE cpio "-o" - "-O" (string-append out "/initrd") - "-H" "newc" "--null"))) - (define print0 - (let ((len (string-length "./"))) - (lambda (file) - (format pipe "~a\0" (string-drop file len))))) + ;; Note: as per `ramfs-rootfs-initramfs.txt', always add + ;; directory entries before the files that are inside of it: "The + ;; Linux kernel cpio extractor won't create files in a directory + ;; that doesn't exist, so the directory entries must go before + ;; the files that go in those directories." + (file-system-fold (const #t) + (lambda (file stat result) ; leaf + (print0 file)) + (lambda (dir stat result) ; down + (unless (string=? dir ".") + (print0 dir))) + (const #f) ; up + (const #f) ; skip + (const #f) + #f + ".") - ;; Note: as per `ramfs-rootfs-initramfs.txt', always add - ;; directory entries before the files that are inside of it: "The - ;; Linux kernel cpio extractor won't create files in a directory - ;; that doesn't exist, so the directory entries must go before - ;; the files that go in those directories." - (file-system-fold (const #t) - (lambda (file stat result) ; leaf - (print0 file)) - (lambda (dir stat result) ; down - (unless (string=? dir ".") - (print0 dir))) - (const #f) ; up - (const #f) ; skip - (const #f) - #f - ".") + (and (zero? (close-pipe pipe)) + (with-directory-excursion #$output + (and (zero? (system* gzip "--best" "initrd")) + (rename-file "initrd.gz" "initrd"))))))))) - (and (zero? (close-pipe pipe)) - (with-directory-excursion out - (and (zero? (system* gzip "--best" "initrd")) - (rename-file "initrd.gz" "initrd"))))))))) - - (mlet* %store-monad - ((source (imported-modules modules)) - (compiled (compiled-modules modules)) - (inputs (lower-inputs - `(("guile" ,guile) - ("cpio" ,cpio) - ("gzip" ,gzip) - ("modules" ,source) - ("modules/compiled" ,compiled) - ,@(if linux - `(("linux" ,linux)) - '()) - ,@inputs))) - (to-copy (files-to-copy))) - (derivation-expression name (builder to-copy) - #:modules '((guix build utils)) - #:inputs inputs))) + (gexp->derivation name builder + #:modules '((guix build utils))))) (define* (qemu-initrd #:key guile-modules-in-chroot? @@ -257,26 +233,26 @@ to it are lost." '("fuse.ko") '()))) - (mlet %store-monad - ((unionfs (package-file unionfs-fuse/static "bin/unionfs"))) - (expression->initrd - `(begin - (use-modules (guix build linux-initrd)) + (expression->initrd + #~(begin + (use-modules (guix build linux-initrd) + (srfi srfi-26)) - (boot-system #:mounts ',mounts - #:linux-modules ',linux-modules - #:qemu-guest-networking? #t - #:guile-modules-in-chroot? ',guile-modules-in-chroot? - #:unionfs ,unionfs - #:volatile-root? ',volatile-root?)) - #:name "qemu-initrd" - #:modules '((guix build utils) - (guix build linux-initrd)) - #:linux linux-libre - #:linux-modules linux-modules - #:inputs (if volatile-root? - `(("unionfs" ,unionfs-fuse/static)) - '())))) + (boot-system #:mounts '#$mounts + #:linux-modules '#$linux-modules + #:qemu-guest-networking? #t + #:guile-modules-in-chroot? '#$guile-modules-in-chroot? + #:unionfs (and=> #$(and volatile-root? unionfs-fuse/static) + (cut string-append <> "/bin/unionfs")) + #:volatile-root? '#$volatile-root?)) + #:name "qemu-initrd" + #:modules '((guix build utils) + (guix build linux-initrd)) + #:to-copy (if volatile-root? + (list unionfs-fuse/static) + '()) + #:linux linux-libre + #:linux-modules linux-modules)) (define (gnu-system-initrd) "Initrd for the GNU system itself, with nothing QEMU-specific." |