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| author | Danny Milosavljevic <dannym@scratchpost.org> | 2020-11-07 22:27:32 +0100 |
|---|---|---|
| committer | Danny Milosavljevic <dannym@scratchpost.org> | 2020-11-22 11:03:31 +0100 |
| commit | 8e7c98963f7e51b2ee9fd140f1aa59cf0f762a60 (patch) | |
| tree | 95c1b41bd94afae72f51558eb86e8730b093a384 /guix/cpio.scm | |
| parent | b1dfc64552265d66e60d11c2a1b6f4da549cd495 (diff) | |
| download | guix-8e7c98963f7e51b2ee9fd140f1aa59cf0f762a60.tar.gz | |
linux-initrd: Add special-file->cpio-header*.
* guix/cpio.scm (special-file->cpio-header*): New public procedure.
Diffstat (limited to 'guix/cpio.scm')
| -rw-r--r-- | guix/cpio.scm | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/guix/cpio.scm b/guix/cpio.scm index 5d38573971..c9932f5bf9 100644 --- a/guix/cpio.scm +++ b/guix/cpio.scm @@ -27,6 +27,7 @@ make-cpio-header file->cpio-header file->cpio-header* + special-file->cpio-header* write-cpio-header read-cpio-header @@ -190,6 +191,25 @@ produced in a deterministic fashion." #:size (stat:size st) #:name-size (string-length file-name)))) +(define* (special-file->cpio-header* file + device-type + device-major + device-minor + permission-bits + #:optional (file-name file)) + "Create a character or block device header. + +DEVICE-TYPE is either 'char-special or 'block-special. + +The number of hard links is assumed to be 1." + (make-cpio-header #:mode (logior (match device-type + ('block-special C_ISBLK) + ('char-special C_ISCHR)) + permission-bits) + #:nlink 1 + #:rdev (device-number device-major device-minor) + #:name-size (string-length file-name))) + (define %trailer "TRAILER!!!") |