linux-initrd: Move initrd creation code to (guix build linux-initrd).
* gnu/build/linux-initrd.scm (cache-compiled-file-name, compile-to-cache, build-initrd): New procedures. * gnu/system/linux-initrd.scm (expression->initrd)[builder]: Remove code now moved above. Use 'build-initrd'.
This commit is contained in:
Ludovic Courtès
parent
70608adb4a
commit
1621cf97aa
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@ -17,9 +17,15 @@
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu build linux-initrd)
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#:use-module (guix build utils)
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#:use-module (guix build store-copy)
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#:use-module (system base compile)
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#:use-module (rnrs bytevectors)
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#:use-module ((system foreign) #:select (sizeof))
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#:use-module (ice-9 popen)
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#:use-module (ice-9 ftw)
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#:export (write-cpio-archive))
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#:export (write-cpio-archive
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build-initrd))
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;;; Commentary:
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;;;
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@ -69,4 +75,73 @@ COMPRESS? is true, compress it using GZIP. On success, return OUTPUT."
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output))
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output))))
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(define (cache-compiled-file-name file)
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"Return the file name of the in-cache .go file for FILE, relative to the
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current directory.
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This is similar to what 'compiled-file-name' in (system base compile) does."
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(let loop ((file file))
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(let ((target (false-if-exception (readlink file))))
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(if target
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(loop target)
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(format #f ".cache/guile/ccache/~a-~a-~a-~a/~a"
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(effective-version)
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(if (eq? (native-endianness) (endianness little))
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"LE"
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"BE")
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(sizeof '*)
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(effective-version)
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file)))))
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(define (compile-to-cache file)
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"Compile FILE to the cache."
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(let ((compiled-file (cache-compiled-file-name file)))
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(mkdir-p (dirname compiled-file))
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(compile-file file
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#:opts %auto-compilation-options
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#:output-file compiled-file)))
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(define* (build-initrd output
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#:key
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guile init
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linux-module-directory
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(references-graphs '())
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(cpio "cpio")
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(gzip "gzip"))
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"Write an initial RAM disk (initrd) to OUTPUT. The initrd starts the script
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at INIT, running GUILE. It contains all the items referred to by
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REFERENCES-GRAPHS, plus the Linux modules from LINUX-MODULE-DIRECTORY."
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(mkdir "contents")
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;; Copy the closures of all the items referenced in REFERENCES-GRAPHS.
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(populate-store references-graphs "contents")
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(with-directory-excursion "contents"
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;; Copy Linux modules.
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(mkdir "modules")
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(copy-recursively linux-module-directory "modules")
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;; Make '/init'.
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(symlink init "init")
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;; Compile it.
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(compile-to-cache "init")
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;; Allow Guile to find out where it is (XXX). See
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;; 'guile-relocatable.patch'.
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(mkdir-p "proc/self")
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(symlink (string-append guile "/bin/guile") "proc/self/exe")
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(readlink "proc/self/exe")
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;; Reset the timestamps of all the files that will make it in the initrd.
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(for-each (lambda (file)
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(unless (eq? 'symlink (stat:type (lstat file)))
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(utime file 0 0 0 0)))
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(find-files "." ".*"))
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(write-cpio-archive output "."
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#:cpio cpio #:gzip gzip))
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(delete-file-recursively "contents"))
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;;; linux-initrd.scm ends here
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@ -81,64 +81,17 @@ initrd."
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(length to-copy)))
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(define builder
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;; TODO: Move most of this code to (gnu build linux-initrd).
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#~(begin
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(use-modules (gnu build linux-initrd)
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(guix build utils)
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(guix build store-copy)
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(system base compile)
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(rnrs bytevectors)
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((system foreign) #:select (sizeof)))
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(use-modules (gnu build linux-initrd))
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(mkdir #$output)
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(mkdir "contents")
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(with-directory-excursion "contents"
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;; Copy Linux modules.
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(mkdir "modules")
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(copy-recursively #$module-dir "modules")
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;; Populate the initrd's store.
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(with-directory-excursion ".."
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(populate-store '#$graph-files "contents"))
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;; Make '/init'.
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(symlink #$init "init")
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;; Compile it.
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(let* ((init (readlink "init"))
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(scm-dir (string-append "share/guile/" (effective-version)))
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(go-dir (format #f ".cache/guile/ccache/~a-~a-~a-~a/~a"
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(effective-version)
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(if (eq? (native-endianness) (endianness little))
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"LE"
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"BE")
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(sizeof '*)
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(effective-version)
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(dirname init))))
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(mkdir-p go-dir)
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(compile-file init
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#:opts %auto-compilation-options
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#:output-file (string-append go-dir "/"
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(basename init)
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".go")))
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;; This hack allows Guile to find out where it is. See
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;; 'guile-relocatable.patch'.
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(mkdir-p "proc/self")
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(symlink (string-append #$guile "/bin/guile") "proc/self/exe")
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(readlink "proc/self/exe")
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;; Reset the timestamps of all the files that will make it in the
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;; initrd.
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(for-each (lambda (file)
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(unless (eq? 'symlink (stat:type (lstat file)))
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(utime file 0 0 0 0)))
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(find-files "." ".*"))
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(write-cpio-archive (string-append #$output "/initrd") "."
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(build-initrd (string-append #$output "/initrd")
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#:guile #$guile
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#:init #$init
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#:references-graphs '#$graph-files
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#:linux-module-directory #$module-dir
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#:cpio (string-append #$cpio "/bin/cpio")
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#:gzip (string-append #$gzip "/bin/gzip")))))
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#:gzip (string-append #$gzip "/bin/gzip"))))
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(gexp->derivation name builder
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#:modules '((guix build utils)
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