diff options
| -rw-r--r-- | gnu/installer/parted.scm | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/gnu/installer/parted.scm b/gnu/installer/parted.scm index cbe676017b..ad7dd6bf91 100644 --- a/gnu/installer/parted.scm +++ b/gnu/installer/parted.scm @@ -26,6 +26,7 @@ #:use-module ((gnu build file-systems) #:select (canonicalize-device-spec find-partition-by-label + find-partition-by-uuid read-partition-uuid read-luks-partition-uuid)) #:use-module ((gnu build linux-boot) @@ -345,35 +346,38 @@ fail. See rereadpt function in wipefs.c of util-linux for an explanation." (with-null-output-ports (invoke "dmsetup" "remove_all"))) -(define (installation-device) - "Return the installation device path." +(define (installer-root-partition-path) + "Return the root partition path, or #f if it could not be detected." (let* ((cmdline (linux-command-line)) (root (find-long-option "--root" cmdline))) (and root - (canonicalize-device-spec (uuid root))))) + (or (and (access? root F_OK) root) + (find-partition-by-label root) + (and=> (uuid root) + find-partition-by-uuid))))) (define (non-install-devices) "Return all the available devices, except the install device." - (define (read-only? device) - (dynamic-wind - (lambda () - (device-open device)) - (lambda () - (device-read-only? device)) - (lambda () - (device-close device)))) - - ;; If parted reports that a device is read-only it is probably the - ;; installation device. However, as this detection does not always work, - ;; compare the device path to the installation device path read from the - ;; command line. - (let ((install-device (installation-device))) - (remove (lambda (device) - (let ((file-name (device-path device))) - (or (read-only? device) - (and install-device - (string=? file-name install-device))))) - (devices)))) + + (define the-installer-root-partition-path + (installer-root-partition-path)) + + ;; Read partition table of device and compare each path to the one + ;; we're booting from to determine if it is the installation + ;; device. + (define (installation-device? device) + ;; When using CDROM based installation, the root partition path may be the + ;; device path. + (or (string=? the-installer-root-partition-path + (device-path device)) + (let ((disk (disk-new device))) + (and disk + (any (lambda (partition) + (string=? the-installer-root-partition-path + (partition-get-path partition))) + (disk-partitions disk)))))) + + (remove installation-device? (devices))) ;; |