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-rw-r--r--gnu/build/linux-boot.scm12
1 files changed, 9 insertions, 3 deletions
diff --git a/gnu/build/linux-boot.scm b/gnu/build/linux-boot.scm
index 56042da8f6..a58232c815 100644
--- a/gnu/build/linux-boot.scm
+++ b/gnu/build/linux-boot.scm
@@ -340,13 +340,14 @@ bailing out.~%root contents: ~s~%" (scandir "/"))
(linux-modules '())
qemu-guest-networking?
volatile-root?
+ pre-mount
(mounts '()))
"This procedure is meant to be called from an initrd. Boot a system by
first loading LINUX-MODULES (a list of absolute file names of '.ko' files),
then setting up QEMU guest networking if QEMU-GUEST-NETWORKING? is true,
-mounting the file systems specified in MOUNTS, and finally booting into the
-new root if any. The initrd supports kernel command-line options '--load',
-'--root', and '--repl'.
+calling PRE-MOUNT, mounting the file systems specified in MOUNTS, and finally
+booting into the new root if any. The initrd supports kernel command-line
+options '--load', '--root', and '--repl'.
Mount the root file system, specified by the '--root' command-line argument,
if any.
@@ -403,6 +404,11 @@ to it are lost."
(mkdir "/root/dev")
(make-essential-device-nodes #:root "/root"))
+ (when (procedure? pre-mount)
+ ;; Do whatever actions are needed before mounting--e.g., installing
+ ;; device mappings.
+ (pre-mount))
+
;; Mount the specified file systems.
(for-each mount-file-system
(remove root-mount-point? mounts))