initial push

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

85system-upgrade-powerel/do-upgrade.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+# actually perform the upgrade, using UPGRADEBIN (set in /etc/conf.d)
+
+do_upgrade() {
+    local args="" rv=0
+    getargbool 0 rd.upgrade.test && args="$args --testing"
+    getargbool 0 rd.upgrade.verbose && args="$args --verbose"
+    getargbool 0 rd.upgrade.debug && args="$args --debug"
+
+    # enable plymouth output unless specifically disabled
+    getargbool 1 plymouth.enable && args="$args --plymouth"
+
+    # Force selinux into permissive mode unless booted with 'enforcing=1'.
+    # FIXME: THIS IS A BIG STUPID HAMMER AND WE SHOULD ACTUALLY SOLVE THE ROOT
+    # PROBLEMS RATHER THAN JUST PAPERING OVER THE WHOLE THING. But this is what
+    # Anaconda did, and upgrades don't seem to work otherwise, so...
+    if [ -f /sys/fs/selinux/enforce ]; then
+        enforce=$(< /sys/fs/selinux/enforce)
+        getargbool 0 enforcing || echo 0 > /sys/fs/selinux/enforce
+    fi
+    # Some bugs this works around:
+    # https://bugzilla.redhat.com/show_bug.cgi?id=841451
+    # https://bugzilla.redhat.com/show_bug.cgi?id=844167
+    # others to be filed (mysterious initramfs without kernel modules, etc.)
+
+    # and off we go...
+    $UPGRADEBIN --root=/sysroot $args
+    rv=$?
+
+    # backup old product id certificates
+    chroot $NEWROOT /bin/sh -c 'mkdir /etc/pki/product_old; mv -f /etc/pki/product/*.pem /etc/pki/product_old/'
+
+    # install new product id certificates
+    chroot $NEWROOT /bin/sh -c 'mv -f /system-upgrade/*.pem /etc/pki/product/'
+
+    # restore things twiddled by workarounds above. TODO: remove!
+    if [ -f /sys/fs/selinux/enforce ]; then
+        echo $enforce > /sys/fs/selinux/enforce
+    fi
+    return $rv
+}
+
+[ ! -x "$UPGRADEBIN" ] && warn "upgrade binary '$UPGRADEBIN' missing!" && return
+
+do_upgrade || exit $?

85system-upgrade-powerel/keep-initramfs.sh

@@ -0,0 +1,78 @@
+#!/bin/sh
+
+die() { warn "$*"; exit 1; }
+
+upgradedir="${NEWROOT}/system-upgrade-root"
+
+[ -d "$upgradedir" ] || die "'$upgradedir' doesn't exist"
+
+echo "saving initramfs to $upgradedir"
+
+mount -t tmpfs -o mode=755 tmpfs "$upgradedir" \
+    || die "Can't mount tmpfs for $upgradedir"
+
+cp -ax / "$upgradedir" || die "failed to save initramfs to $upgradedir"
+
+# switch off initrd mode
+rm -f "$upgradedir/etc/initrd-release"
+# make sure we have os-release
+ln -sf "system-upgrade-release" "$upgradedir/etc/os-release"
+
+create_newroot_dir() {
+    local newdir="$1"
+
+    # Save the current mount options
+    # mountinfo consists of lines of the form:
+    # <mount-ID> <parent-ID> <major>:<minor> <root> <mount point> <options> <optional fields> ... - <fstype> <source> <super options>
+    #
+    # This loops assumes that $NEWROOT is a mount point and that we can
+    # ignore <root>, since nothing should be mounted in a chroot jail yet
+    local old_opts=""
+    local mount_id parent_id major_minor root mount_point options rest
+    while read -r mount_id parent_id major_minor root mount_point options \
+            rest ; do
+        if [ "$mount_point" = "$NEWROOT" ]; then
+            old_opts="$options"
+            break
+        fi
+    done < /proc/self/mountinfo
+    if [ -z "$old_opts" ]; then
+        old_opts="defaults"
+    fi
+
+    if [ ! -d "$NEWROOT/$newdir" ]; then
+        # attempt to create the dir if it's not already present.
+        # NOTE: this is somewhat unreliable and should be avoided if possible,
+        # e.g. by making sure the required dirs exist before reboot
+        mount -o remount,rw "$NEWROOT"
+        mkdir -p "$NEWROOT/$newdir"
+        mount -o remount,"$old_opts" "$NEWROOT"
+    fi
+}
+
+bind_into_newroot() {
+    local dir="$1"
+    echo "making /$dir available inside $NEWROOT"
+    create_newroot_dir "$dir"
+    mount --bind $upgradedir/$dir $NEWROOT/$dir \
+        || warn "failed to bind /$dir into $NEWROOT"
+    # leave a note for upgrade-prep.service
+    > $NEWROOT/$dir/.please-unmount
+}
+
+# make our kernel modules available inside the system so we can load drivers
+bind_into_newroot lib/modules/$(uname -r)
+
+# plymouthd will crash if it tries to load a plymouth module from a previous
+# version that was ABI-incompatible (e.g. F17 label.so in F18 plymouthd).
+plydir=lib/plymouth
+[ -d /$plydir ] || plydir=lib64/plymouth
+bind_into_newroot $plydir
+
+# Create /run in $NEWROOT if not already available
+create_newroot_dir run
+
+# If $NEWROOT does not use systemd, mask out initrd-udevadm-cleanup-db since
+# nothing will be repopulating the data
+[ -x "$NEWROOT/usr/lib/systemd/systemd" ] || \
+    ln -sf /dev/null /etc/systemd/system/initrd-udevadm-cleanup-db.service

85system-upgrade-powerel/module-setup.sh.in

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+UPGRADEBIN=@LIBEXECDIR@/system-upgrade-powerel
+TOOL_VERSION=@VERSION@
+
+check() {
+    [ -x $UPGRADEBIN ] || return 1
+    return 255
+}
+
+depends() {
+    echo plymouth
+}
+
+install() {
+    # write our version info somewhere
+    {
+        echo NAME=\"powerel-upgrade-tool\"
+        echo VERSION=\"$TOOL_VERSION\"
+        echo ID=powerel-upgrade-dracut
+        echo VERSION_ID=$TOOL_VERSION
+        echo PRETTY_NAME=\"powerel-upgrade-dracut-$TOOL_VERSION\"
+        echo ANSI_COLOR=\"0\;36\"
+    } > $initdir/etc/system-upgrade-release
+    # stuff we need for initial boot
+    # ------------------------------
+    # SELinux policy and contexts
+    dracut_install /etc/selinux/config
+    dracut_install /etc/selinux/*/policy/*
+    dracut_install $(find /etc/selinux/*/contexts)
+    # script to save initramfs at UPGRADEROOT
+    inst_hook pre-pivot 99 "$moddir/keep-initramfs.sh"
+    # remove the plymouth text plugin so we get either graphics or details
+    rm -r ${initdir}/$(plymouth --get-splash-plugin-path)text.so \
+          ${initdir}/usr/share/plymouth/themes/text/*
+
+
+    # stuff we use in upgrade hook(s)
+    # -------------------------------
+    # upgrader binary
+    inst_binary $UPGRADEBIN
+    # config file so we can find it
+    mkdir -p "${initdir}/etc/conf.d"
+    echo "UPGRADEBIN=$UPGRADEBIN" > "${initdir}/etc/conf.d/powerel-upgrade-tool.conf"
+
+    # RPM hash/sig checks (via NSS) don't work without these
+    inst_libdir_file "libfreebl*" "libsqlite*" "libsoftokn*"
+
+    # RPM can't find the rpmdb without rpmconfig
+    rpmconfig=$(find /etc/rpm /usr/lib/rpm -name "rpmrc" -o -name "macros*")
+    dracut_install $rpmconfig
+
+    # script to run before the upgrade
+    inst_hook upgrade-pre 50 "$moddir/prepare-rootfs.sh"
+
+    # script to actually run the upgrader binary
+    inst_hook upgrade 50 "$moddir/do-upgrade.sh"
+
+    # Run scripts generated by preupgrade-assistant after upgrade
+    inst_hook upgrade-post 50 "$moddir/preupgrade-postupgrade.sh"
+
+    # clean up after upgrade
+    inst_hook upgrade-post 70 "$moddir/upgrade-cleanup.sh"
+
+    # save the journal/logs after we're done
+    inst_hook upgrade-post 99 "$moddir/save-journal.sh"
+}

85system-upgrade-powerel/move-journal.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+if [ -e /var/log/journal ]; then
+    echo '/var/log/journal exists; not moving journal'
+    return
+fi
+
+echo "switching journal output to disk"
+
+journal=/sysroot/var/log/upgrade.journal
+
+# back up old journal, if present
+[ -e $journal ] && rm -rf $journal.old && mv $journal $journal.old
+
+# make output dir and link to it
+mkdir -p $journal /var/log
+ln -sf $journal /var/log/journal
+
+# tell journald to start writing to /var/log/journal
+systemctl kill --kill-who=main --signal=SIGUSR1 systemd-journald.service

85system-upgrade-powerel/prepare-rootfs.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+die() { warn "$*"; exit 1; }
+
+# Check whether converts needs to be run
+if [ ! -L "${NEWROOT}/bin" ]; then
+    convertfs "${NEWROOT}" || die "Unable to convert root filesystem"
+fi

85system-upgrade-powerel/preupgrade-postupgrade.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+POSTUPGRADE_DIR="/root/preupgrade/postupgrade.d"
+
+echo "Running postupgrade scripts..."
+
+if [ -d "${NEWROOT}/${POSTUPGRADE_DIR}" ]; then
+    ( cd $NEWROOT ;
+
+      find "./${POSTUPGRADE_DIR}" -type f -perm /u+x -exec ls -1 {} + | \
+        while read -r script ; do
+          echo "Running ${script##./}..."
+          scriptdir="$(echo "${script}" | sed 's|^\(.*\)/\([^/]*\)$|\1|')"
+          scriptbase="$(echo "${script}" | sed 's|^\(.*\)/\([^/]*\)$|\2|')"
+          chroot . /bin/sh -c "cd \"${scriptdir}\" && ./\"${scriptbase}\""
+       done
+    )
+else
+    echo "No postupgrade scripts found."
+fi
+

85system-upgrade-powerel/save-journal.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+echo "all upgrade scripts finished"
+echo "writing logs to disk and rebooting"
+
+logfile=/sysroot/var/log/upgrade.log
+
+# back up old logfile, if present
+[ -e $logfile ] && rm -rf $logfile.old && mv $logfile $logfile.old
+
+# write out the logfile
+journalctl -a -m > $logfile

85system-upgrade-powerel/upgrade-cleanup.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+getargbool 0 rd.upgrade.test && return # skip cleanup if we were just testing
+[ "$UPGRADE_STATE" == failed ] && return # skip cleanup on failure
+chroot $NEWROOT powerel-upgrade-tool-cli --clean

90system-upgrade/README.txt

@@ -0,0 +1,38 @@
+system-upgrade
+==============
+Will Woods <wwoods@redhat.com>
+// vim: syn=asciidoc tw=78:
+
+This module adds targets suitable for system upgrades.
+
+The upgrade workflow is something like this:
+
+. Using the *new* distro version, create an initramfs with `system-upgrade`.
+    * Any other module starting with `system-upgrade-` will be included, e.g.:
+      * distro-specific upgrade tool
+      * distro-specific migration scripts
+      * package-specific migration scripts
+. Boot the *new* kernel + initramfs on the system to be upgraded.
+    * root device is discovered
+    * distro-specific filesystem migration tasks happen here, using
+      the `pre-mount` hook
+    * root device is mounted at `$NEWROOT`
+    * initramfs copies the `$NEWROOT/system-upgrade` symlink to
+      `/run/system-upgrade`
+    * initramfs contents will be copied to `$NEWROOT/system-upgrade-root`
+    * initramfs does a `switch-root` to the "real" root filesystem
+. The system mounts its local disks.
+. The system prepares `/system-upgrade-root`
+    * Mounted filesystems are bind-mounted to `/system-upgrade-root/sysroot`
+    * distros can unpack their `upgrade.img` into `/system-upgrade-root` here
+. The system does a `switch-root` back into the initramfs
+    * This time we're going to `upgrade.target` instead
+. The `upgrade-pre` service/hook runs
+    * After=`upgrade.target`
+. The `upgrade` service/hook runs
+    * distro-specific upgrade tools should run here
+. The `upgrade-post` service/hook runs
+. The system is rebooted.
+
+It's probably a good idea to take a filesystem snapshot in `pre-mount` or
+`pre-pivot`. If anything goes wrong, restore the snapshot in `upgrade-post`.

90system-upgrade/initrd-system-upgrade-generator

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+[ -d "$2" ] || exit 1
+
+system_upgrade=$(readlink /sysroot/system-upgrade)
+if [ -L /sysroot/system-upgrade -a -d /sysroot/$system_upgrade ]; then
+    ln -sf /etc/systemd/system/upgrade.target "$2/default.target"
+fi

90system-upgrade/module-setup.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+upgrade_hooks="upgrade-pre upgrade upgrade-post"
+
+check() {
+    hookdirs+="$upgrade_hooks "
+    return 255
+}
+
+depends() {
+    echo "systemd"
+    # pull in any other "system-upgrade-*" modules that exist
+    local mod_dir mod
+    for mod_dir in $dracutbasedir/modules.d/[0-9][0-9]*; do
+        [ -d $mod_dir ] || continue
+        mod=${mod_dir##*/[0-9][0-9]}
+        strstr "$mod" "system-upgrade-" && echo $mod
+    done
+    return 0
+}
+
+install() {
+    # Set UPGRADE env variable
+    inst_hook cmdline 01 "$moddir/upgrade-init.sh"
+    # Save copy of $NEWROOT/system-upgrade to /run
+    inst_hook pre-pivot 99 "$moddir/upgrade-pre-pivot.sh"
+
+    # NOTE: 98systemd copies units from here to /run/systemd/system so systemd
+    #       won't lose our units after switch-root.
+    unitdir="/etc/systemd/system"
+
+    # Set up systemd target and units
+    upgrade_wantsdir="${initdir}${unitdir}/upgrade.target.wants"
+
+    inst_simple "$moddir/upgrade.target" "$unitdir/upgrade.target"
+
+    mkdir -p "$upgrade_wantsdir"
+    for s in $upgrade_hooks; do
+        inst_simple "$moddir/$s.service" "$unitdir/$s.service"
+        inst_script "$moddir/$s.sh"      "/bin/$s"
+        ln -sf "../$s.service" $upgrade_wantsdir
+    done
+
+    # generator to switch to upgrade.target when we return to initrd
+    generatordir="/usr/lib/systemd/system-generators"
+    mkdir -p "${initdir}${generatordir}"
+    inst_script "$moddir/initrd-system-upgrade-generator" \
+                "$generatordir/initrd-system-upgrade-generator"
+
+    # upgrade shell service
+    sysinit_wantsdir="${initdir}${unitdir}/sysinit.target.wants"
+    mkdir -p $sysinit_wantsdir
+    inst_simple "$moddir/system-upgrade-shell.service" \
+                "$unitdir/system-upgrade-shell.service"
+    ln -sf "../system-upgrade-shell.service" $sysinit_wantsdir
+}
+

90system-upgrade/system-upgrade-shell.service

@@ -0,0 +1,26 @@
+[Unit]
+Description=Debug shell on tty2
+DefaultDependencies=no
+Conflicts=shutdown.target
+ConditionKernelCommandLine=!rd.upgrade.noshell
+
+[Service]
+Environment=TERM=linux PS1=system-upgrade:\w\$\x20
+ExecStart=/bin/bash -i -l
+Restart=always
+RestartSec=0
+StandardInput=tty
+TTYPath=/dev/tty2
+TTYReset=yes
+TTYVHangup=yes
+KillMode=process
+IgnoreSIGPIPE=no
+# bash ignores SIGTERM
+KillSignal=SIGHUP
+
+# Unset locale for the console getty since the console has problems
+# displaying some internationalized messages.
+Environment=LANG= LANGUAGE= LC_CTYPE= LC_NUMERIC= LC_TIME= LC_COLLATE= LC_MONETARY= LC_MESSAGES= LC_PAPER= LC_NAME= LC_ADDRESS= LC_TELEPHONE= LC_MEASUREMENT= LC_IDENTIFICATION=
+
+[Install]
+WantedBy=sysinit.target

90system-upgrade/upgrade-init.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export UPGRADE=1

90system-upgrade/upgrade-post.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=System Upgrade (post)
+Documentation=man:upgrade-post.service(8)
+DefaultDependencies=no
+After=upgrade.target
+After=upgrade.service
+
+[Service]
+Type=oneshot
+ExecStart=-/bin/upgrade-post
+ExecStopPost=-/usr/bin/systemctl --no-block isolate reboot.target
+StandardInput=null
+StandardOutput=journal+console
+StandardError=journal+console
+KillMode=process
+KillSignal=SIGHUP

90system-upgrade/upgrade-post.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# upgrade-post hook: last-minute fixes, cleanups, etc.
+echo "starting upgrade-post hook"
+
+export DRACUT_SYSTEMD=1
+if [ -f /dracut-state.sh ]; then
+    . /dracut-state.sh 2>/dev/null
+fi
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+source_conf /etc/conf.d
+
+getarg 'rd.upgrade.break=post' 'rd.break=upgrade-post' && \
+    emergency_shell -n upgrade-post "Break before upgrade-post hook"
+source_hook upgrade-post
+
+exit 0

90system-upgrade/upgrade-pre-pivot.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# pause the progress meter - we'll start it back up when the upgrade starts
+plymouth pause-progress
+
+# make a backup copy of the link itself
+cp -P ${NEWROOT}/system-upgrade /run/system-upgrade

90system-upgrade/upgrade-pre.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=System Upgrade (pre)
+Documentation=man:upgrade-pre.service(8)
+DefaultDependencies=no
+After=upgrade.target plymouth-start.service
+Before=upgrade.service
+
+[Service]
+Type=oneshot
+ExecStart=-/bin/upgrade-pre
+StandardInput=null
+StandardOutput=journal+console
+StandardError=journal+console
+KillMode=process
+KillSignal=SIGHUP

90system-upgrade/upgrade-pre.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# upgrade-pre hook: before the upgrade, but after the disks are mounted
+echo "starting upgrade-pre hook"
+
+export DRACUT_SYSTEMD=1
+if [ -f /dracut-state.sh ]; then
+    . /dracut-state.sh 2>/dev/null
+fi
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+source_conf /etc/conf.d
+
+plymouth change-mode --updates && plymouth system-update --progress=0
+
+getarg 'rd.upgrade.break=pre' 'rd.break=upgrade-pre' && \
+    emergency_shell -n upgrade-pre "Break before upgrade-pre hook"
+source_hook upgrade-pre
+
+exit 0

90system-upgrade/upgrade.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=System Upgrade
+Documentation=man:upgrade.service(8)
+DefaultDependencies=no
+After=upgrade.target
+OnFailure=emergency.target
+OnFailureIsolate=yes
+
+[Service]
+Type=oneshot
+ExecStart=/bin/upgrade
+StandardInput=null
+StandardOutput=journal+console
+StandardError=journal+console
+KillMode=process
+KillSignal=SIGHUP

90system-upgrade/upgrade.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# upgrade hook: distro-specific modules will add their upgrade tasks here
+echo "starting upgrade hook"
+
+export DRACUT_SYSTEMD=1
+if [ -f /dracut-state.sh ]; then
+    . /dracut-state.sh 2>/dev/null
+fi
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+source_conf /etc/conf.d
+
+getarg 'rd.upgrade.break=upgrade' 'rd.break=upgrade' && \
+    emergency_shell -n upgrade "Break before upgrade"
+
+setstate() {
+    export UPGRADE_STATE="$*"
+    echo "$UPGRADE_STATE" > $NEWROOT/var/tmp/system-upgrade.state
+}
+
+setstate running
+
+trap 'setstate failed' EXIT
+source_hook upgrade
+trap - EXIT
+
+setstate finished
+
+exit 0

90system-upgrade/upgrade.target

@@ -0,0 +1,6 @@
+[Unit]
+Description=System Upgrade
+Documentation=man:upgrade.target(7)
+Requires=sysinit.target sockets.target
+After=sysinit.target sockets.target
+AllowIsolate=yes

COPYING

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
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+
+  Finally, any free program is threatened constantly by software
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+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
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+
+Activities other than copying, distribution and modification are not
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+
+  1. You may copy and distribute verbatim copies of the Program's
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+
+You may charge a fee for the physical act of transferring a copy, and
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+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
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+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
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+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
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+    a) Accompany it with the complete corresponding machine-readable
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+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
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+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
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+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
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+
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+
+If any portion of this section is held invalid or unenforceable under
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+
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+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
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+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
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+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
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+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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+
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+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

Makefile

@@ -0,0 +1,101 @@
+VERSION=0.8.9
+INSTALL=install -p
+SED=sed
+LIBEXECDIR=/usr/libexec
+DRACUTMODDIR=/usr/lib/dracut/modules.d
+
+dracut_DIR = $(DRACUTMODDIR)/90system-upgrade
+dracut_SCRIPTS = 90system-upgrade/module-setup.sh \
+		 90system-upgrade/upgrade-init.sh \
+		 90system-upgrade/upgrade-pre-pivot.sh \
+		 90system-upgrade/upgrade-pre.sh \
+		 90system-upgrade/upgrade.sh \
+		 90system-upgrade/upgrade-post.sh \
+		 90system-upgrade/initrd-system-upgrade-generator
+dracut_DATA = 90system-upgrade/README.txt \
+	      90system-upgrade/upgrade.target \
+	      90system-upgrade/upgrade-pre.service \
+	      90system-upgrade/upgrade.service \
+	      90system-upgrade/upgrade-post.service \
+	      90system-upgrade/system-upgrade-shell.service
+
+upgrade_DIR = $(DRACUTMODDIR)/85system-upgrade-powerel
+upgrade_BIN = system-upgrade-powerel
+upgrade_SCRIPTS = 85system-upgrade-powerel/module-setup.sh \
+		 85system-upgrade-powerel/keep-initramfs.sh \
+		 85system-upgrade-powerel/prepare-rootfs.sh \
+		 85system-upgrade-powerel/do-upgrade.sh \
+		 85system-upgrade-powerel/upgrade-cleanup.sh \
+		 85system-upgrade-powerel/save-journal.sh \
+		 85system-upgrade-powerel/preupgrade-postupgrade.sh
+
+THEMENAME=powerel-upgrade-tool
+THEMESDIR=$(shell pkg-config ply-splash-graphics --variable=themesdir)
+plymouth_DIR = $(THEMESDIR)$(THEMENAME)
+plymouth_DATA = plymouth/*.png
+plymouth_THEME = plymouth/powerel-upgrade-tool.plymouth
+
+GENFILES = 85system-upgrade-powerel/module-setup.sh powerel-upgrade-dracut.spec
+
+SCRIPTS = $(dracut_SCRIPTS) $(upgrade_SCRIPTS)
+DATA = $(dracut_DATA) $(plymouth_DATA) $(plymouth_THEME)
+BIN = $(upgrade_BIN)
+
+all: $(SCRIPTS) $(DATA) $(BIN)
+
+PACKAGES=glib-2.0 rpm ply-boot-client
+
+$(BIN): %: %.c
+	$(CC) $(shell pkg-config $(PACKAGES) --cflags --libs) $(CFLAGS) $< -o $@
+
+$(GENFILES): %: %.in
+	$(SED) -e 's,@LIBEXECDIR@,$(LIBEXECDIR),g' \
+	       -e 's,@VERSION@,$(VERSION),g' \
+	       $< > $@
+
+clean:
+	rm -f $(BIN) $(GENFILES) $(ARCHIVE) upgrade.img
+	rm -rf rpm
+
+install: $(BIN) $(SCRIPTS) $(DATA)
+	$(INSTALL) -d $(DESTDIR)$(LIBEXECDIR)
+	$(INSTALL) $(BIN) $(DESTDIR)$(LIBEXECDIR)
+	$(INSTALL) -d $(DESTDIR)$(dracut_DIR)
+	$(INSTALL) $(dracut_SCRIPTS) $(DESTDIR)$(dracut_DIR)
+	$(INSTALL) -m644 $(dracut_DATA) $(DESTDIR)$(dracut_DIR)
+	$(INSTALL) -d $(DESTDIR)$(upgrade_DIR)
+	$(INSTALL) $(upgrade_SCRIPTS) $(DESTDIR)$(upgrade_DIR)
+	$(INSTALL) -d $(DESTDIR)$(plymouth_DIR)
+	$(INSTALL) -m644 $(plymouth_DATA) $(DESTDIR)$(plymouth_DIR)
+	$(INSTALL) -m644 $(plymouth_THEME) \
+			 $(DESTDIR)$(plymouth_DIR)/$(THEMENAME).plymouth
+
+ARCHIVE = powerel-upgrade-dracut-$(VERSION).tar.xz
+archive: $(ARCHIVE)
+$(ARCHIVE):
+	git archive --format=tar --prefix=powerel-upgrade-dracut-$(VERSION)/ HEAD \
+	  | xz -c > $@ || rm $@
+
+rpm: $(ARCHIVE) powerel-upgrade-dracut.spec
+	mkdir -p rpm/build
+	rpmbuild -ba powerel-upgrade-dracut.spec \
+		 --define '_specdir $(PWD)' \
+		 --define '_sourcedir $(PWD)' \
+		 --define '_specdir $(PWD)' \
+		 --define '_srcrpmdir $(PWD)/rpm' \
+		 --define '_rpmdir $(PWD)/rpm' \
+		 --define '_builddir $(PWD)/rpm/build'
+
+repo: make-powerel-upgrade-repo
+	mkdir repo
+	./make-powerel-upgrade-repo repo || rm -rf repo
+
+upgrade.img:
+	PLYMOUTH_THEME_NAME=$(THEMENAME) \
+	dracut --conf /dev/null --confdir /var/empty --add "system-upgrade" \
+		--no-hostonly --nolvmconf --nomdadmconf --force --verbose \
+		upgrade.img
+
+
+
+.PHONY: all clean archive install

README.asciidoc

@@ -0,0 +1,66 @@
+powerel-upgrade-dracut - initramfs environment for PEL Upgrades
+================================================================
+Toshaan Bharvani <toshaan@vantosh.com>
+
+This is 'powerel-upgrade-dracut', the initramfs environment for PEL Upgrades.
+
+This tool is forked from/based upon 'redhat-upgrade-dracut' with original
+author Will Woods <wwoods@redhat.com>
+
+Components
+----------
+
+It has the following parts:
+
+`90system-upgrade/`
+~~~~~~~~~~~~~~~~~~~
+This module provides a (distro-neutral) framework for running upgrades.
+
+* Adds three dracut hooks: `upgrade-pre`, `upgrade`, and `upgrade-post`.
+* Adds `upgrade.target`, which runs the above hooks (in order)
+* Automatically includes any other modules named `system-upgrade-*`
+* 'BONUS:' adds system-upgrade-shell.service
+
+`85system-upgrade-powerel/`
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+This is the PEL 'system-upgrade' implementation.
+
+* Includes upgrade tool, SELinux policy, plymouth, etc.
+* Copies initramfs to `$NEWROOT/system-upgrade-root`
+* Runs 'system-upgrade-powerel' binary in the `upgrade` hook
+* Save log & journal to `/var/log/upgrade.{log,journal}` before reboot
+
+`system-upgrade-powerel.c`
+~~~~~~~~~~~~~~~~~~~~~~~~~
+The actual upgrade tool.
+
+* Upgrades system using packages from `$UPGRADELINK`
+* Sends progress updates to `plymouthd`
+* Sends status output to console + journal
+
+The actual upgrade setup is handled in the main 'powerel-upgrade-tool' package.
+Based upon the 'redhat-upgrade-tool', which can be found here:
+https://github.com/dashea/powerel-upgrade-tool
+
+Building
+--------
+
+You'll want to build the initramfs on the _newer_ distro version.
+
+. Install build requirements
+    * 'rpm-devel' >= 4.10.0
+    * 'plymouth-devel' >= 0.8.6
+    * 'systemd' >= 195
+    * 'glib2-devel'
+. Install dracut modules
+    * `make install`, or
+        .. `make archive`
+        .. `rpmbuild -ta redhat-upgrade-dracut*.tar.xz`
+        .. +rpm -ivh '[freshly-built RPMs]'+
+. Build upgrade initramfs
+    * `OLDTHEME=$(plymouth-set-default-theme)`
+    * `plymouth-set-default-theme powerel-upgrade-tool`
+    * `dracut --add system-upgrade upgrade.img`
+    * `plymouth-set-default-theme $OLDTHEME`
+
+// vim: set syn=asciidoc tw=78:

TODO.asciidoc

@@ -0,0 +1,29 @@
+i18n::
+  * Mark strings for translation in `system-upgrade-redhat.c`
+
+Docs::
+  * man pages like whoa
+  * document boot args (rd.upgrade.*)
+
+Improve progress reporting::
+  * change /etc/*-release so "Welcome to XXX" message says "Welcome to redhat-upgrade-tool"
+  * count %posttrans scripts, take %posttrans into account for upgrade progress
+  ** although actually posttrans is only like 1.3% of elapsed time...
+  * warn user about long-running %post scripts
+  ** in a perfect world the scripts should do that for us
+  * use RPMCALLBACK_*_PROGRESS for finer-grained progress
+  * invoke a callback during pre-transaction RPM header scanning
+  * Fancier plymouth theme
+
+Error detection / reporting / handling::
+  * Fail if some packages are missing
+  ** Allow override via commandline arg?
+  * Add a 'upgrade-failure' callback (for e.g. restoring a backup)
+
+Upstreaming::
+  * get 90system-upgrade upstream
+  * get save-initramfs.sh into upstream dracut
+
+Backup/restore::
+  * If possible, take LVM/btrfs snapshot before upgrade
+  * On failure, restore snapshot

make-powerel-upgrade-repo

@@ -0,0 +1,128 @@
+#!/bin/bash
+#
+# make-redhat-upgrade-repo - quick script to make a redhat-upgrade-tool usable
+# instrepo for testing
+#
+# Copyright (C) 2012 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Will Woods <wwoods@redhat.com>
+
+
+# constants and helper functions!
+# -------------------------------
+export PLYMOUTH_THEME_NAME=powerel-upgrade-tool
+KERNELPATH=vmlinuz
+UPGRADEPATH=upgrade.img
+die() { echo $(basename $0): error: $@ >&2; exit 1; }
+sha256() { set -- $(sha256sum $1); echo "sha256:$1"; }
+
+
+# argument validation stuff!
+# --------------------------
+repodir="$1"
+kver="${2:-$(uname -r)}"
+
+[ -z "$1" ] && echo "usage: make-redhat-upgrade-repo REPODIR [KERNELVER]" && exit 1
+[ -d "$repodir" ] || die "directory $repodir doesn't exist. create it first."
+[ -f $repodir/repodata/repomd.xml ] || createrepo=1
+
+source /etc/os-release 2>/dev/null
+
+kernel="/boot/vmlinuz-$kver" # NOTE: distro-specific
+
+# sanity checks!
+# --------------
+[ -f "$kernel" ] || die "can't find kernel $kernel"
+[ -d "/lib/modules/$kver" ] || die "can't find modules for kernel $kver"
+
+command -v dracut >/dev/null || die "can't find dracut"
+dracut --list-modules 2>/dev/null | grep -q system-upgrade || \
+    die "dracut can't find system-upgrade module. install redhat-upgrade-dracut."
+
+if [ $createrepo ]; then
+    command -v createrepo >/dev/null || die "can't find createrepo"
+fi
+
+
+# actual repo creation!
+# ---------------------
+[ $(id -u) = 0 ] || die "be root."
+# make leading dirs
+echo "creating redhat-upgrade-tool-capable repo at $repodir"
+mkdir -p "$repodir/$(dirname $KERNELPATH)" \
+         "$repodir/$(dirname $UPGRADEPATH)" || \
+    die "failed to make required directories."
+
+# copy kernel into place
+echo "* copying kernel to $KERNELPATH"
+cp -f $kernel "$repodir/$KERNELPATH" || \
+    die "couldn't copy kernel."
+
+# build upgrade.img
+echo "* building $UPGRADEPATH (this will take a moment..)"
+dracut --conf /dev/null --confdir $repodir \
+       --no-hostonly --nolvmconf --nomdadmconf \
+       --add "system-upgrade plymouth-label convertfs" \
+       --xz --force "$repodir/$UPGRADEPATH" "$kver" || \
+    die "dracut failed to build upgrade.img."
+
+# write .treeinfo
+echo "* writing .treeinfo"
+arch=$(uname -m)
+cat > $repodir/.treeinfo << __EOT__ || die "couldn't write .treeinfo"
+[general]
+family = redhat-upgrade-tool
+timestamp = $(date '+%s')
+arch = $arch
+version = ${VERSION_ID:-0}
+
+[images-$arch]
+kernel = $KERNELPATH
+upgrade = $UPGRADEPATH
+
+[checksums]
+$KERNELPATH = $(sha256 "$repodir/$KERNELPATH")
+$UPGRADEPATH = $(sha256 "$repodir/$UPGRADEPATH")
+__EOT__
+
+
+# create repodata if necessary
+if [ $createrepo ]; then
+    echo "* creating repodata"
+    createrepo $repodir >/dev/null || die "createrepo failed."
+else
+    echo "* repodata exists, skipping createrepo"
+fi
+
+chmod -R a+r $repodir
+
+cat > $repodir/serve << '__EOT__'
+#!/bin/bash
+echo "This repo will be reachable at:"
+echo
+for ip in $(ip addr | sed -rn 's| *inet ([0-9.]+)/.*|\1|p'); do
+    echo "    http://$ip:${1:-8000}/"
+done
+echo
+python -m SimpleHTTPServer $1
+__EOT__
+chmod 0755 $repodir/serve
+
+echo "done."
+
+if [ -z "$VERSION_ID" ]; then
+    echo "You should probably set 'version' in $repodir/.treeinfo"
+fi

plymouth/powerel-upgrade-tool-throb.plymouth

@@ -0,0 +1,13 @@
+[Plymouth Theme]
+Name=PowerEL Upgrade Tool
+Description=A pulsing progress bar intended for use during system upgrades.
+ModuleName=throbgress
+
+[throbgress]
+ImageDir=/usr/share/plymouth/themes/powerel-upgrade-tool
+HorizontalAlignment=.5
+VerticalAlignment=.75
+Transition=none
+TransitionDuration=0.0
+BackgroundStartColor=0x111111
+BackgroundEndColor=0x111111

plymouth/powerel-upgrade-tool.plymouth

@@ -0,0 +1,13 @@
+[Plymouth Theme]
+Name=PowerEL Upgrade Tool
+Description=A pulsing progress bar intended for use during system upgrades.
+ModuleName=two-step
+
+[two-step]
+ImageDir=/usr/share/plymouth/themes/powerel-upgrade-tool
+HorizontalAlignment=.5
+VerticalAlignment=.5
+Transition=none
+TransitionDuration=0.0
+BackgroundStartColor=0x111111
+BackgroundEndColor=0x111111