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From: Danny Milosavljevic <dannym@scratchpost.org>
To: 27690@debbugs.gnu.org
Subject: [bug#27690] [PATCH] build: Allow mounting of entire disks.
Date: Fri, 14 Jul 2017 10:32:15 +0200	[thread overview]
Message-ID: <20170714083215.9889-1-dannym@scratchpost.org> (raw)

* gnu/build/file-systems.scm (disk-partitions): Also return entire drives.
---
 gnu/build/file-systems.scm | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index b6930497d..462ed9b7f 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -377,11 +377,14 @@ not valid header was found."
     (string-ref str (- (string-length str) 1)))
 
   (define (partition? name major minor)
-    ;; Select device names that end in a digit, like libblkid's 'probe_all'
-    ;; function does.  Checking for "/sys/dev/block/MAJOR:MINOR/partition"
-    ;; doesn't work for partitions coming from mapped devices.
-    (and (char-set-contains? char-set:digit (last-character name))
-         (> major 2)))                      ;ignore RAM disks and floppy disks
+    ;; grub-mkrescue does some funny things for EFI support which
+    ;; makes it a lot more difficult than one would expect to support
+    ;; booting an ISO-9660 image from an USB flash drive.
+    ;; For example there's a buggy (too small) hidden partition in it
+    ;; which Linux rightfully refuses to mount.
+    ;; In any case, partition tables are supposed to be optional so
+    ;; here we allow checking entire disks for file systems, too.
+    (> major 2))                      ;ignore RAM disks and floppy disks
 
   (call-with-input-file "/proc/partitions"
     (lambda (port)

             reply	other threads:[~2017-07-14  8:47 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-14  8:32 Danny Milosavljevic [this message]
2017-07-17  9:28 ` [bug#27690] [PATCH] build: Allow mounting of entire disks Ludovic Courtès
2017-09-05 13:22   ` bug#27690: " Ludovic Courtès

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