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linux-initrd: Produce cpio archives with zeroed timestamps, etc.

* guix/cpio.scm (file->cpio-header*): New procedure.
* gnu/build/linux-initrd.scm (write-cpio-archive): Add #:file->header argument
  to 'cpio:write-cpio-archive'.
gn-latest-20200428
Ludovic Courtès 6 years ago
parent
commit
eae5b3fff5
2 changed files with 15 additions and 1 deletions
  1. +2
    -1
      gnu/build/linux-initrd.scm
  2. +13
    -0
      guix/cpio.scm

+ 2
- 1
gnu/build/linux-initrd.scm View File

@ -68,7 +68,8 @@ COMPRESS? is true, compress it using GZIP. On success, return OUTPUT."
(call-with-output-file output
(lambda (port)
(cpio:write-cpio-archive files port)))
(cpio:write-cpio-archive files port
#:file->header cpio:file->cpio-header*)))
(or (not compress?)
(and (zero? (system* gzip "--best" output))


+ 13
- 0
guix/cpio.scm View File

@ -26,6 +26,7 @@
#:export (cpio-header?
make-cpio-header
file->cpio-header
file->cpio-header*
write-cpio-header
read-cpio-header
@ -174,6 +175,18 @@ using FILE-NAME as its file name."
#:rdev (stat:rdev st)
#:name-size (string-length file-name))))
(define* (file->cpio-header* file
#:optional (file-name file)
#:key (stat lstat))
"Similar to 'file->cpio-header', but return a header with a zeroed
modification time, inode number, UID/GID, etc. This allows archives to be
produced in a deterministic fashion."
(let ((st (stat file)))
(make-cpio-header #:mode (stat:mode st)
#:nlink (stat:nlink st)
#:size (stat:size st)
#:name-size (string-length file-name))))
(define %trailer
"TRAILER!!!")


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