Currently dmsquash-live-root requires that squashfs images be named
"squashfs.img" and all others be "ext3fs.img" or "rootfs.img".
If we've got a live image in initramfs, this patch will make dracut use
losetup and det_fs to determine the actual filesystem type of the image.
Signed-off-by: Will Woods <wwoods@xxxxxxxxxx>
---
modules.d/90dmsquash-live/dmsquash-live-root | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/modules.d/90dmsquash-live/dmsquash-live-root b/modules.d/90dmsquash-live/dmsquash-live-root
index a76cbc7..265de19 100755
--- a/modules.d/90dmsquash-live/dmsquash-live-root
+++ b/modules.d/90dmsquash-live/dmsquash-live-root
@@ -41,14 +41,23 @@ if [ -n "$check" ]; then
[ -x /bin/plymouth ] && /bin/plymouth --show-splash
fi
+# determine filesystem type for a filesystem image
+det_img_fs() {
+ local _img="$1" _loop=$(losetup -f) _fs
+ losetup $_loop $_img; _fs=$(det_fs $_loop); losetup -d $_loop
+ echo $_fs
+}
+
for arg in $CMDLINE; do case $arg in ro|rw) liverw=$arg ;; esac; done
# mount the backing of the live image first
mkdir -m 0755 -p /run/initramfs/live
if [ -f $livedev ]; then
# no mount needed - we've already got the LiveOS image in initramfs
- case $livedev in
- *squashfs.img) SQUASHED=$livedev ;;
- *ext3fs.img|*rootfs.img) FSIMG=$livedev ;;
+ # check filesystem type and handle accordingly
+ case `det_img_fs $livedev` in
+ squashfs) SQUASHED=$livedev ;;
+ auto) die "cannot mount live image (unknown filesystem type)" ;;
+ *) FSIMG=$livedev ;;
esac
else
mount -n -t $fstype -o ${liverw:-ro} $livedev /run/initramfs/live
--
1.7.6
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