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os-probes
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50mounted-tests
#!/usr/bin/sh # Sub-tests that require a mounted partition. set -e partition="$1" . /usr/share/os-prober/common.sh do_unmount() { if [ "$mounted" ]; then if ! umount "$tmpmnt"; then warn "failed to umount $tmpmnt" fi fi rmdir "$tmpmnt" || true } if [ "x$1" = xbtrfs ]; then types=btrfs if [ -z "$2" -o -z "$3" ]; then debug "missing btrfs parameters, exiting" exit 1 fi UUID="$2" BTRFSDEV="$3" else partition="$1" types="$(fs_type "$partition")" || types=NOT-DETECTED fi if [ "$types" = NOT-DETECTED ]; then debug "$1 type not recognised; skipping" exit 1 elif [ "$types" = swap ]; then debug "$1 is a swap partition; skipping" exit 1 elif [ "$types" = crypto_LUKS ]; then debug "$1 is a LUKS partition; skipping" exit 1 elif [ "$types" = LVM2_member ]; then debug "$1 is an LVM member; skipping" exit 1 elif [ "$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 1 fi for type in $(grep -v nodev /proc/filesystems); do # hfsplus filesystems are mountable as hfs. Try hfs last so # that we can tell the difference. if [ "$type" = hfs ]; then delaytypes="${delaytypes:+$delaytypes }$type" elif [ "$type" = fuseblk ]; then if type ntfs-3g >/dev/null 2>&1; then types="${types:+$types }ntfs-3g" fi else types="${types:+$types }$type" fi done fi tmpmnt=/var/lib/os-prober/mount if [ ! -d "$tmpmnt" ]; then mkdir "$tmpmnt" fi mounted= # all btrfs processing here. Handle both unmounted and # mounted subvolumes. if [ "$types" = btrfs ]; then partition="$BTRFSDEV" debug "begin btrfs processing for $UUID" # note that the btrfs volume must not be mounted ro if mount -t btrfs -U "$UUID" "$tmpmnt" 2>/dev/null; then debug "btrfs volume $UUID mounted" else warn "cannot mount btrfs volume $UUID, exiting" rmdir "$tmpmnt" || true exit 1 fi # besides regular subvols, get ro and snapshot so thet can be excluded subvols=$(btrfs subvolume list "$tmpmnt" | cut -d ' ' -f 9) rosubvols=$(btrfs subvolume list -r "$tmpmnt" | cut -d ' ' -f 9) sssubvols=$(btrfs subvolume list -s "$tmpmnt" | cut -d ' ' -f 14) if ! umount "$tmpmnt"; then warn "failed to umount btrfs volume on $tmpmnt" rmdir "$tmpmnt" || true exit 1 fi found= mounted= mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | cut -d ' ' -f 5)" if [ -n "$mpoint" -a "x$mpoint" = "x/" ]; then debug "This is the root for the running system" #running system must be done elsewhere else #partition was not root of running system, so lets look for bootable subvols if [ -n "$mpoint" ] ; then mounted=1 #partition was already mounted,so lets not unmount it when done else # again, do not mount btrfs ro mount -t btrfs -U "$UUID" "$tmpmnt" mpoint="$tmpmnt" fi test="/usr/libexec/os-probes/mounted/90linux-distro" if [ -f "$test" ] && [ -x "$test" ]; then debug "running subtest $test" if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID"; then debug "os found by subtest $test on $partition" found=1 fi fi if [ -z "$mounted" ]; then if ! umount "$tmpmnt"; then warn "failed to umount $tmpmnt" fi fi fi if [ -z "$subvols" ]; then debug "no subvols found on btrfs volume $UUID" else found= for subvol in $subvols; do debug "begin btrfs processing for $UUID subvol=$subvol" if echo "$rosubvols" | grep -q -x "$subvol"; then continue fi if echo "$sssubvols" | grep -q -x "$subvol"; then continue fi mounted= mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | grep "/$subvol " | cut -d ' ' -f 5)" if [ -n "$mpoint" ]; then if [ "x$mpoint" = "x/" ]; then continue # this is the root for the running system fi mounted=1 else # again, do not mount btrfs ro mount -t btrfs -o subvol="$subvol" -U "$UUID" "$tmpmnt" mpoint="$tmpmnt" fi test="/usr/libexec/os-probes/mounted/90linux-distro" if [ -f "$test" ] && [ -x "$test" ]; then debug "running subtest $test" if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID" "subvol=$subvol"; then debug "os found by subtest $test on subvol $subvol" found=1 fi fi if [ -z "$mounted" ]; then if ! umount "$tmpmnt"; then warn "failed to umount $tmpmnt" fi fi done fi rmdir "$tmpmnt" || true if [ "$found" ]; then exit 0 else exit 1 fi fi if type grub2-mount >/dev/null 2>&1 && \ type grub2-probe >/dev/null 2>&1 && \ grub2-mount "$partition" "$tmpmnt" 2>/dev/null; then mounted=1 type="$(grub2-probe -d "$partition" -t fs)" || true if [ "$type" ]; then debug "mounted using GRUB $type filesystem driver" else debug "mounted using GRUB, but unknown filesystem?" type=fuseblk fi fi if [ "$mounted" ]; then for test in /usr/libexec/os-probes/mounted/*; do debug "running subtest $test" if [ -f "$test" ] && [ -x "$test" ]; then if "$test" "$partition" "$tmpmnt" "$type"; then debug "os found by subtest $test" do_unmount exit 0 fi fi done fi do_unmount # No tests found anything. exit 1
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