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diff -ru os-prober-1.77/common.sh os-prober-1.77.new/common.sh
--- os-prober-1.77/common.sh 2018-08-10 21:23:18.000000000 +0200
+++ os-prober-1.77.new/common.sh 2019-08-03 23:37:48.466380378 +0200
@@ -176,6 +176,15 @@
sed 's/\\011/ /g; s/\\012/\n/g; s/\\040/ /g; s/\\134/\\/g'
}
+ro_partition () {
+ if type blockdev >/dev/null 2>&1 && \
+ [ "$(blockdev --getro "$1")" = 0 ] && \
+ blockdev --setro "$1"; then
+ cleanup_ro_partitions="${cleanup_ro_partitions:+$cleanup_ro_partitions }$1"
+ trap cleanup EXIT HUP INT QUIT TERM
+ fi
+}
+
find_label () {
local output
if type blkid >/dev/null 2>&1; then
diff -ru os-prober-1.77/os-probes/common/50mounted-tests os-prober-1.77.new/os-probes/common/50mounted-tests
--- os-prober-1.77/os-probes/common/50mounted-tests 2018-08-10 21:23:18.000000000 +0200
+++ os-prober-1.77.new/os-probes/common/50mounted-tests 2019-08-03 23:37:48.465380372 +0200
@@ -69,6 +69,15 @@
debug "mounted using GRUB, but unknown filesystem?"
type=fuseblk
fi
+else
+ ro_partition "$partition"
+ for type in $types $delaytypes; do
+ if mount -o ro -t "$type" "$partition" "$tmpmnt" 2>/dev/null; then
+ debug "mounted as $type filesystem"
+ mounted=1
+ break
+ fi
+ done
fi
if [ "$mounted" ]; then
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