#!/bin/sh
-# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
-# ex: ts=8 sw=4 sts=4 et filetype=sh
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+command -v unpack_archive >/dev/null || . /lib/img-lib.sh
+
PATH=/usr/sbin:/usr/bin:/sbin:/bin
if getargbool 0 rd.live.debug -n -y rdlivedebug; then
live_dir=$(getarg rd.live.dir -d live_dir)
[ -z "$live_dir" ] && live_dir="LiveOS"
squash_image=$(getarg rd.live.squashimg)
-[ -z "squash_image" ] && squash_image="squashfs.img"
+[ -z "$squash_image" ] && squash_image="squashfs.img"
getargbool 0 rd.live.ram -d -y live_ram && live_ram="yes"
getargbool 0 rd.live.overlay.reset -d -y reset_overlay && reset_overlay="yes"
getargbool 0 rd.live.overlay.readonly -d -y readonly_overlay && readonly_overlay="--readonly" || readonly_overlay=""
overlay=$(getarg rd.live.overlay -d overlay)
+getargbool 0 rd.writable.fsimg -d -y writable_fsimg && writable_fsimg="yes"
+overlay_size=$(getarg rd.live.overlay.size=)
+[ -z "$overlay_size" ] && overlay_size=32768
+
+getargbool 0 rd.live.overlay.thin && thin_snapshot="yes"
+getargbool 0 rd.live.overlay.overlayfs && overlayfs="yes"
# CD/DVD media check
[ -b $livedev ] && fs=$(blkid -s TYPE -o value $livedev)
if [ -n "$check" ]; then
type plymouth >/dev/null 2>&1 && plymouth --hide-splash
if [ -n "$DRACUT_SYSTEMD" ]; then
- p=$(str_replace "$livedev" "-" '\x2d')
+ p=$(dev_unit_name "$livedev")
systemctl start checkisomd5@${p}.service
else
checkisomd5 --verbose $livedev
fi
- if [ $? -ne 0 ]; then
+ if [ $? -eq 1 ]; then
die "CD check failed!"
exit 1
fi
# determine filesystem type for a filesystem image
det_img_fs() {
- udevadm settle
+ udevadm settle >&2
blkid -s TYPE -u noraid -o value "$1"
}
modprobe squashfs
-
+CMDLINE=$(getcmdline)
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
esac
[ -e /sys/fs/$fstype ] || modprobe $fstype
else
- mount -n -t $fstype -o ${liverw:-ro} $livedev /run/initramfs/live
+ if [ "$(blkid -o value -s TYPE $livedev)" != "ntfs" ]; then
+ mount -n -t $fstype -o ${liverw:-ro} $livedev /run/initramfs/live
+ else
+ # Symlinking /usr/bin/ntfs-3g as /sbin/mount.ntfs seems to boot
+ # at the first glance, but ends with lots and lots of squashfs
+ # errors, because systemd attempts to kill the ntfs-3g process?!
+ if [ -x "/usr/bin/ntfs-3g" ]; then
+ ( exec -a @ntfs-3g ntfs-3g -o ${liverw:-ro} $livedev /run/initramfs/live ) | vwarn
+ else
+ die "Failed to mount block device of live image: Missing NTFS support"
+ exit 1
+ fi
+ fi
+
if [ "$?" != "0" ]; then
die "Failed to mount block device of live image"
exit 1
# create a sparse file for the overlay
# overlay: if non-ram overlay searching is desired, do it,
# otherwise, create traditional overlay in ram
- OVERLAY_LOOPDEV=$( losetup -f )
l=$(blkid -s LABEL -o value $livedev) || l=""
u=$(blkid -s UUID -o value $livedev) || u=""
devspec=$( echo $overlay | sed -e 's/:.*$//' )
# need to know where to look for the overlay
- setup=""
- if [ -n "$devspec" -a -n "$pathspec" -a -n "$overlay" ]; then
+ if [ -z "$setup" -a -n "$devspec" -a -n "$pathspec" -a -n "$overlay" ]; then
mkdir -m 0755 /run/initramfs/overlayfs
+ opt=''
+ [ -n "$readonly_overlay" ] && opt=-r
mount -n -t auto $devspec /run/initramfs/overlayfs || :
if [ -f /run/initramfs/overlayfs$pathspec -a -w /run/initramfs/overlayfs$pathspec ]; then
- losetup $OVERLAY_LOOPDEV /run/initramfs/overlayfs$pathspec
- if [ -n "$reset_overlay" ]; then
- dd if=/dev/zero of=$OVERLAY_LOOPDEV bs=64k count=1 conv=fsync 2>/dev/null
+ OVERLAY_LOOPDEV=$(losetup -f --show $opt /run/initramfs/overlayfs$pathspec)
+ over=$OVERLAY_LOOPDEV
+ umount -l /run/initramfs/overlayfs || :
+ oltype=$(det_img_fs $OVERLAY_LOOPDEV)
+ if [ -z "$oltype" ] || [ "$oltype" = DM_snapshot_cow ]; then
+ if [ -n "$reset_overlay" ]; then
+ info "Resetting the Device-mapper overlay."
+ dd if=/dev/zero of=$OVERLAY_LOOPDEV bs=64k count=1 conv=fsync 2>/dev/null
+ fi
+ if [ -n "$overlayfs" ]; then
+ unset -v overlayfs
+ [ -n "$DRACUT_SYSTEMD" ] && reloadsysrootmountunit="yes"
+ fi
+ setup="yes"
+ else
+ mount -n -t $oltype $opt $OVERLAY_LOOPDEV /run/initramfs/overlayfs
+ if [ -d /run/initramfs/overlayfs/overlayfs ] &&
+ [ -d /run/initramfs/overlayfs/ovlwork ]; then
+ ln -s /run/initramfs/overlayfs/overlayfs /run/overlayfs$opt
+ ln -s /run/initramfs/overlayfs/ovlwork /run/ovlwork$opt
+ if [ -z "$overlayfs" ]; then
+ overlayfs="yes"
+ [ -n "$DRACUT_SYSTEMD" ] && reloadsysrootmountunit="yes"
+ fi
+ setup="yes"
+ fi
+ fi
+ elif [ -d /run/initramfs/overlayfs$pathspec ] &&
+ [ -d /run/initramfs/overlayfs$pathspec/../ovlwork ]; then
+ ln -s /run/initramfs/overlayfs$pathspec /run/overlayfs$opt
+ ln -s /run/initramfs/overlayfs$pathspec/../ovlwork /run/ovlwork$opt
+ if [ -z "$overlayfs" ]; then
+ overlayfs="yes"
+ [ -n "$DRACUT_SYSTEMD" ] && reloadsysrootmountunit="yes"
fi
setup="yes"
fi
- umount -l /run/initramfs/overlayfs || :
+ fi
+ if [ -n "$overlayfs" ]; then
+ modprobe overlay
+ if [ $? != 0 ]; then
+ m='OverlayFS is not available; using temporary Device-mapper overlay.'
+ unset -v overlayfs setup
+ [ -n "$reloadsysrootmountunit" ] && unset -v reloadsysrootmountunit
+ fi
fi
if [ -z "$setup" -o -n "$readonly_overlay" ]; then
if [ -n "$setup" ]; then
warn "Using temporary overlay."
elif [ -n "$devspec" -a -n "$pathspec" ]; then
- warn "Unable to find persistent overlay; using temporary"
- sleep 5
+ [ -z "$m" ] &&
+ m=' Unable to find a persistent overlay; using a temporary one.'
+ m="$m"$'\n All root filesystem changes will be lost on shutdown.'
+ m="$m"$'\n Press [Enter] to continue.'
+ echo -e "\n\n\n\n${m}\n\n\n" > /dev/kmsg
+ if [ -n "$DRACUT_SYSTEMD" ]; then
+ if type plymouth >/dev/null 2>&1 && plymouth --ping ; then
+ if getargbool 0 rhgb || getargbool 0 splash ; then
+ m='>>>'$'\n''>>>'$'\n''>>>'$'\n\n\n'"$m"
+ m="${m%n.*}"$'n.\n\n\n''<<<'$'\n''<<<'$'\n''<<<'
+ plymouth display-message --text="${m}"
+ else
+ plymouth ask-question --prompt="${m}" --command=true
+ fi
+ else
+ m=">>>${m//.[[:space:]]/.} <<<"
+ systemd-ask-password --timeout=0 "${m}"
+ fi
+ else
+ type plymouth >/dev/null 2>&1 && plymouth --ping && plymouth --quit
+ read -s -r -p $'\n\n'"${m}" -n 1 reply
+ fi
fi
-
- dd if=/dev/null of=/overlay bs=1024 count=1 seek=$((512*1024)) 2> /dev/null
- if [ -n "$setup" -a -n "$readonly_overlay" ]; then
- RO_OVERLAY_LOOPDEV=$( losetup -f )
- losetup $RO_OVERLAY_LOOPDEV /overlay
+ if [ -n "$overlayfs" ]; then
+ mkdir -m 0755 /run/overlayfs
+ mkdir -m 0755 /run/ovlwork
else
- losetup $OVERLAY_LOOPDEV /overlay
+ dd if=/dev/null of=/overlay bs=1024 count=1 seek=$((overlay_size*1024)) 2> /dev/null
+ if [ -n "$setup" -a -n "$readonly_overlay" ]; then
+ RO_OVERLAY_LOOPDEV=$(losetup -f --show /overlay)
+ over=$RO_OVERLAY_LOOPDEV
+ else
+ OVERLAY_LOOPDEV=$(losetup -f --show /overlay)
+ over=$OVERLAY_LOOPDEV
+ fi
fi
fi
# set up the snapshot
- sz=$(blockdev --getsz $BASE_LOOPDEV)
- if [ -n "$readonly_overlay" ]; then
- echo 0 $sz snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create $readonly_overlay live-ro
- base="/dev/mapper/live-ro"
- over=$RO_OVERLAY_LOOPDEV
- else
- base=$BASE_LOOPDEV
- over=$OVERLAY_LOOPDEV
+ if [ -z "$overlayfs" ]; then
+ if [ -n "$readonly_overlay" ] && [ -n "$OVERLAY_LOOPDEV" ]; then
+ echo 0 $sz snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV P 8 | dmsetup create --readonly live-ro
+ base="/dev/mapper/live-ro"
+ else
+ base=$BASE_LOOPDEV
+ fi
+ fi
+
+ if [ -n "$thin_snapshot" ]; then
+ modprobe dm_thin_pool
+ mkdir -m 0755 /run/initramfs/thin-overlay
+
+ # In block units (512b)
+ thin_data_sz=$(( $overlay_size * 1024 * 1024 / 512 ))
+ thin_meta_sz=$(( $thin_data_sz / 10 ))
+
+ # It is important to have the backing file on a tmpfs
+ # this is needed to let the loopdevice support TRIM
+ dd if=/dev/null of=/run/initramfs/thin-overlay/meta bs=1b count=1 seek=$((thin_meta_sz)) 2> /dev/null
+ dd if=/dev/null of=/run/initramfs/thin-overlay/data bs=1b count=1 seek=$((thin_data_sz)) 2> /dev/null
+
+ THIN_META_LOOPDEV=$( losetup --show -f /run/initramfs/thin-overlay/meta )
+ THIN_DATA_LOOPDEV=$( losetup --show -f /run/initramfs/thin-overlay/data )
+
+ echo 0 $thin_data_sz thin-pool $THIN_META_LOOPDEV $THIN_DATA_LOOPDEV 1024 1024 | dmsetup create live-overlay-pool
+ dmsetup message /dev/mapper/live-overlay-pool 0 "create_thin 0"
+
+ # Create a snapshot of the base image
+ echo 0 $sz thin /dev/mapper/live-overlay-pool 0 $base | dmsetup create live-rw
+ elif [ -z "$overlayfs" ]; then
+ echo 0 $sz snapshot $base $over PO 8 | dmsetup create live-rw
fi
- echo 0 $sz snapshot $base $over p 8 | dmsetup create live-rw
-}
-# live cd helper function
-do_live_from_base_loop() {
- do_live_overlay
+ # Create a device for the ro base of overlayed file systems.
+ if [ -z "$overlayfs" ]; then
+ echo 0 $sz linear $BASE_LOOPDEV 0 | dmsetup create --readonly live-base
+ fi
+ ln -s $BASE_LOOPDEV /dev/live-base
}
# we might have a genMinInstDelta delta file for anaconda to take advantage of
if [ -e /run/initramfs/live/${live_dir}/osmin.img ]; then
OSMINSQFS=/run/initramfs/live/${live_dir}/osmin.img
-fi
-
-if [ -n "$OSMINSQFS" ]; then
# decompress the delta data
- dd if=$OSMINSQFS of=/osmin.img 2> /dev/null
+ dd if=$OSMINSQFS of=/run/initramfs/osmin.img 2> /dev/null
OSMIN_SQUASHED_LOOPDEV=$( losetup -f )
- losetup -r $OSMIN_SQUASHED_LOOPDEV /osmin.img
+ losetup -r $OSMIN_SQUASHED_LOOPDEV /run/initramfs/osmin.img
mkdir -m 0755 -p /run/initramfs/squashfs.osmin
mount -n -t squashfs -o ro $OSMIN_SQUASHED_LOOPDEV /run/initramfs/squashfs.osmin
OSMIN_LOOPDEV=$( losetup -f )
umount -l /run/initramfs/squashfs.osmin
fi
-# we might have an embedded fs image to use as rootfs (uncompressed live)
-if [ -e /run/initramfs/live/${live_dir}/ext3fs.img ]; then
- FSIMG="/run/initramfs/live/${live_dir}/ext3fs.img"
-elif [ -e /run/initramfs/live/${live_dir}/rootfs.img ]; then
- FSIMG="/run/initramfs/live/${live_dir}/rootfs.img"
-fi
-
-if [ -n "$FSIMG" ] ; then
- BASE_LOOPDEV=$( losetup -f )
- losetup -r $BASE_LOOPDEV $FSIMG
-
- do_live_from_base_loop
-fi
-
# we might have an embedded fs image on squashfs (compressed live)
if [ -e /run/initramfs/live/${live_dir}/${squash_image} ]; then
SQUASHED="/run/initramfs/live/${live_dir}/${squash_image}"
fi
-
-if [ -e "$SQUASHED" ] ; then
- if [ -n "$live_ram" ] ; then
- echo "Copying live image to RAM..."
- echo "(this may take a few minutes)"
- dd if=$SQUASHED of=/squashed.img bs=512 2> /dev/null
- umount -n /run/initramfs/live
- echo "Done copying live image to RAM."
- SQUASHED="/squashed.img"
+if [ -e "$SQUASHED" ]; then
+ if [ -n "$live_ram" ]; then
+ echo 'Copying live image to RAM...' > /dev/kmsg
+ echo ' (this may take a minute)' > /dev/kmsg
+ dd if=$SQUASHED of=/run/initramfs/squashed.img bs=512 2> /dev/null
+ echo 'Done copying live image to RAM.' > /dev/kmsg
+ SQUASHED="/run/initramfs/squashed.img"
fi
SQUASHED_LOOPDEV=$( losetup -f )
mkdir -m 0755 -p /run/initramfs/squashfs
mount -n -t squashfs -o ro $SQUASHED_LOOPDEV /run/initramfs/squashfs
- BASE_LOOPDEV=$( losetup -f )
- if [ -f /run/initramfs/squashfs/LiveOS/ext3fs.img ]; then
- losetup -r $BASE_LOOPDEV /run/initramfs/squashfs/LiveOS/ext3fs.img
- elif [ -f /run/initramfs/squashfs/LiveOS/rootfs.img ]; then
- losetup -r $BASE_LOOPDEV /run/initramfs/squashfs/LiveOS/rootfs.img
+ if [ -d /run/initramfs/squashfs/LiveOS ]; then
+ if [ -f /run/initramfs/squashfs/LiveOS/rootfs.img ]; then
+ FSIMG="/run/initramfs/squashfs/LiveOS/rootfs.img"
+ elif [ -f /run/initramfs/squashfs/LiveOS/ext3fs.img ]; then
+ FSIMG="/run/initramfs/squashfs/LiveOS/ext3fs.img"
+ fi
+ elif [ -d /run/initramfs/squashfs/proc ]; then
+ FSIMG=$SQUASHED
+ if [ -z "$overlayfs" ]; then
+ overlayfs="yes"
+ [ -n "$DRACUT_SYSTEMD" ] && reloadsysrootmountunit="yes"
+ fi
+ else
+ die "Failed to find a root filesystem in $SQUASHED."
+ exit 1
fi
+else
+ # we might have an embedded fs image to use as rootfs (uncompressed live)
+ if [ -e /run/initramfs/live/${live_dir}/rootfs.img ]; then
+ FSIMG="/run/initramfs/live/${live_dir}/rootfs.img"
+ elif [ -e /run/initramfs/live/${live_dir}/ext3fs.img ]; then
+ FSIMG="/run/initramfs/live/${live_dir}/ext3fs.img"
+ fi
+ if [ -n "$live_ram" ]; then
+ echo 'Copying live image to RAM...' > /dev/kmsg
+ echo ' (this may take a minute or so)' > /dev/kmsg
+ dd if=$FSIMG of=/run/initramfs/rootfs.img bs=512 2> /dev/null
+ echo 'Done copying live image to RAM.' > /dev/kmsg
+ FSIMG='/run/initramfs/rootfs.img'
+ fi
+fi
- umount -l /run/initramfs/squashfs
-
- do_live_from_base_loop
+if [ -n "$FSIMG" ]; then
+ if [ -n "$writable_fsimg" ]; then
+ # mount the provided filesystem read/write
+ echo "Unpacking live filesystem (may take some time)" > /dev/kmsg
+ mkdir -m 0755 /run/initramfs/fsimg/
+ if [ -n "$SQUASHED" ]; then
+ cp -v $FSIMG /run/initramfs/fsimg/rootfs.img
+ else
+ unpack_archive $FSIMG /run/initramfs/fsimg/
+ fi
+ FSIMG=/run/initramfs/fsimg/rootfs.img
+ fi
+ opt=-r
+ # For writable DM images...
+ if [ -z "$SQUASHED" -a -n "$live_ram" -a -z "$overlayfs" ] ||
+ [ -n "$writable_fsimg" ] ||
+ [ "$overlay" = none -o "$overlay" = None -o "$overlay" = NONE ]; then
+ if [ -z "$readonly_overlay" ]; then
+ opt=''
+ setup=rw
+ else
+ setup=yes
+ fi
+ fi
+ if [ "$FSIMG" = "$SQUASHED" ]; then
+ BASE_LOOPDEV=$SQUASHED_LOOPDEV
+ else
+ BASE_LOOPDEV=$(losetup -f --show $opt $FSIMG)
+ sz=$(blockdev --getsz $BASE_LOOPDEV)
+ fi
+ if [ "$setup" = rw ]; then
+ echo 0 $sz linear $BASE_LOOPDEV 0 | dmsetup create live-rw
+ else
+ # Add a DM snapshot or OverlayFS for writes.
+ do_live_overlay
+ fi
fi
if [ -b "$OSMIN_LOOPDEV" ]; then
# set up the devicemapper snapshot device, which will merge
# the normal live fs image, and the delta, into a minimzied fs image
- echo "0 $( blockdev --getsz $BASE_LOOPDEV ) snapshot $BASE_LOOPDEV $OSMIN_LOOPDEV p 8" | dmsetup create --readonly live-osimg-min
+ echo "0 $sz snapshot $BASE_LOOPDEV $OSMIN_LOOPDEV P 8" | dmsetup create --readonly live-osimg-min
fi
-ROOTFLAGS="$(getarg rootflags)"
-if [ -n "$ROOTFLAGS" ]; then
- ROOTFLAGS="-o $ROOTFLAGS"
+if [ -n "$reloadsysrootmountunit" ]; then
+ > /xor_overlayfs
+ systemctl daemon-reload
fi
-if [ -b "$BASE_LOOPDEV" ]; then
- ln -s $BASE_LOOPDEV /run/initramfs/live-baseloop
+ROOTFLAGS="$(getarg rootflags)"
+
+if [ -n "$overlayfs" ]; then
+ mkdir -m 0755 /run/rootfsbase
+ if [ -n "$reset_overlay" ] && [ -L /run/overlayfs ]; then
+ ovlfs=$(readlink /run/overlayfs)
+ info "Resetting the OverlayFS overlay directory."
+ rm -r -- ${ovlfs}/* ${ovlfs}/.* >/dev/null 2>&1
+ fi
+ if [ -n "$readonly_overlay" ]; then
+ mkdir -m 0755 /run/rootfsbase-r
+ mount -r $FSIMG /run/rootfsbase-r
+ mount -t overlay LiveOS_rootfs-r -oro,lowerdir=/run/overlayfs-r:/run/rootfsbase-r /run/rootfsbase
+ else
+ mount -r $FSIMG /run/rootfsbase
+ fi
+ if [ -z "$DRACUT_SYSTEMD" ]; then
+ printf 'mount -t overlay LiveOS_rootfs -o%s,%s %s\n' "$ROOTFLAGS" \
+ 'lowerdir=/run/rootfsbase,upperdir=/run/overlayfs,workdir=/run/ovlwork' \
+ "$NEWROOT" > $hookdir/mount/01-$$-live.sh
+ fi
+else
+ if [ -z "$DRACUT_SYSTEMD" ]; then
+ [ -n "$ROOTFLAGS" ] && ROOTFLAGS="-o $ROOTFLAGS"
+ printf 'mount %s /dev/mapper/live-rw %s\n' "$ROOTFLAGS" "$NEWROOT" > $hookdir/mount/01-$$-live.sh
+ fi
fi
-ln -s /dev/mapper/live-rw /dev/root
-printf 'mount %s /dev/mapper/live-rw %s\n' "$ROOTFLAGS" "$NEWROOT" > $hookdir/mount/01-$$-live.sh
+[ -e "$SQUASHED" ] && umount -l /run/initramfs/squashfs
+
+ln -s null /dev/root
need_shutdown
exit 0
+
projects / thirdparty / dracut.git / blobdiff