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-rw-r--r--gnu/build/linux-boot.scm11
1 files changed, 11 insertions, 0 deletions
diff --git a/gnu/build/linux-boot.scm b/gnu/build/linux-boot.scm
index 0ab8391b0b..c9de4f4b90 100644
--- a/gnu/build/linux-boot.scm
+++ b/gnu/build/linux-boot.scm
@@ -37,6 +37,7 @@
#:export (mount-essential-file-systems
linux-command-line
find-long-option
+ find-long-options
make-essential-device-nodes
make-static-device-nodes
configure-qemu-networking
@@ -99,6 +100,16 @@ Return the value associated with OPTION, or #f on failure."
(lambda (arg)
(substring arg (+ 1 (string-index arg #\=)))))))
+(define (find-long-options option arguments)
+ "Find OPTIONs among ARGUMENTS, where OPTION is something like \"console\".
+Return the values associated with OPTIONs as a list, or the empty list if
+OPTION doesn't appear in ARGUMENTS."
+ (let ((opt (string-append option "=")))
+ (filter-map (lambda (arg)
+ (and (string-prefix? opt arg)
+ (substring arg (+ 1 (string-index arg #\=)))))
+ arguments)))
+
(define* (make-disk-device-nodes base major #:optional (minor 0))
"Make the block device nodes around BASE (something like \"/root/dev/sda\")
with the given MAJOR number, starting with MINOR."