/usr/lib/linux-boot-probes/50mounted-tests is in os-prober 1.65+deb8u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | #!/bin/sh
# Sub-tests that require a mounted partition.
. /usr/share/os-prober/common.sh
set -e
partition="$1"
types="$(fs_type "$partition")" || types=NOT-DETECTED
if [ "$types" = NOT-DETECTED ]; then
debug "$1 type not recognised; skipping"
exit 0
elif [ "$types" = swap ]; then
debug "$1 is a swap partition; skipping"
exit 0
elif [ "$types" = crypto_LUKS ]; then
debug "$1 is a LUKS partition; skipping"
exit 0
elif [ "$types" = ntfs ]; then
if type ntfs-3g >/dev/null 2>&1; then
types='ntfs-3g ntfs'
fi
elif [ -z "$types" ]; then
if type cryptsetup >/dev/null 2>&1 && \
cryptsetup luksDump "$partition" >/dev/null 2>&1; then
debug "$1 is a LUKS partition; skipping"
exit 0
fi
types="$(grep -v nodev /proc/filesystems)"
fi
tmpmnt=/var/lib/os-prober/mount
if [ ! -d "$tmpmnt" ]; then
mkdir "$tmpmnt"
fi
mounted=
if type grub-mount >/dev/null 2>&1 && \
type grub-probe >/dev/null 2>&1 && \
grub-mount "$partition" "$tmpmnt" 2>/dev/null; then
mounted=1
type="$(grub-probe -d "$partition" -t fs)"
[ "$type" ] || type=fuseblk
else
ro_partition "$partition"
for type in $types; do
if mount -o ro -t "$type" "$partition" "$tmpmnt" 2>/dev/null; then
mounted=1
break
fi
done
fi
if [ "$mounted" ]; then
linux_mount_boot "$partition" "$tmpmnt"
bootpart="${mountboot%% *}"
mounted="${mountboot#* }"
for test in /usr/lib/linux-boot-probes/mounted/*; do
if [ -f "$test" ] && [ -x "$test" ]; then
debug "running $test $partition $bootpart $tmpmnt $type"
if $test "$partition" "$bootpart" "$tmpmnt" "$type"; then
debug "$test succeeded"
umount "$tmpmnt/boot" 2>/dev/null || true
if ! umount "$tmpmnt"; then
warn "failed to umount $tmpmnt"
fi
rmdir "$tmpmnt" || true
exit 0
fi
fi
done
umount "$tmpmnt/boot" 2>/dev/null || true
if ! umount "$tmpmnt"; then
warn "failed to umount $tmpmnt"
fi
fi
rmdir "$tmpmnt" || true
# No tests found anything.
exit 1
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