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File combustion-1.0+git2.obscpio of Package combustion
07070100000000000081A400000000000000000000000162FE36E4000046AC000000000000000000000000000000000000001C00000000combustion-1.0+git2/LICENSE 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. 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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. 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If this is what you want to do, use the GNU Lesser General Public License instead of this License. 07070100000001000081A400000000000000000000000162FE36E400000198000000000000000000000000000000000000001D00000000combustion-1.0+git2/MakefileMODULEDIR ?= $(DESTDIR)/usr/lib/dracut/modules.d/35combustion all: install: install -Dm0644 module-setup.sh $(MODULEDIR)/module-setup.sh install -Dm0644 combustion.service $(MODULEDIR)/combustion.service install -Dm0644 combustion-prepare.service $(MODULEDIR)/combustion-prepare.service install -Dm0755 combustion $(MODULEDIR)/combustion install -Dm0644 combustion.rules $(MODULEDIR)/combustion.rules 07070100000002000081A400000000000000000000000162FE36E40000124E000000000000000000000000000000000000001E00000000combustion-1.0+git2/README.mdCombustion - configure MicroOS on the first boot ================================================ Combustion is a minimal module for dracut, which runs a user provided script on the first boot of a system. You can use this to create additional files, install packages, set up devices or even re-partition the hard disk. The configuration can be provided as a shell script, loaded from an external storage media and is run during boot in a new system snapshot. On success, the system will directly boot into that new snapshot, so that no reboot is needed. Installation ------------ Run `make install` to install it manually. Usually combustion is packaged up and installed during image builds already. How to use it ------------- The configuration files are copied from a filesystem with the LABEL "combustion", but to be compatible and co-installable with ignition (https://github.com/coreos/ignition), the LABEL "ignition" is used as fallback. It expects a directory "combustion" at the root level of the filesystem and a file "script" inside, which is executed inside a transactional-update shell. ``` <root directory> ├── combustion │ ├── script │ └── ... other files └── ignition (optional) └── config.ign ``` If a QEMU fw_cfg blob with the name "opt/org.opensuse.combustion/script" is found, it is preferred and the content of that is used as script. Example parameter for QEMU: -fw_cfg name=opt/org.opensuse.combustion/script,file=/var/combustion-script You can do everything necessary for initial system configuration from this script, including addition of ssh keys, adding users, changing passwords or even doing partitioning changes. Simple example -------------- Example for formatting a USB drive and adding a config, which installs the "vim-small" package and creates a /root/welcome file: ```bash mkfs.ext4 /dev/sdX e2label /dev/sdX ignition mount /dev/sdX /mnt mkdir -p /mnt/combustion/ cat >/mnt/combustion/script <<EOF #!/bin/sh # combustion: network systemctl enable sshd.service zypper --non-interactive install vim-small cp welcome /root/welcome EOF echo "Hello User!" >/mnt/combustion/welcome umount /mnt ``` The "# combustion: network" comment triggers networking initialization before running the script. This is equivalent to passing "rd.neednet=1" on the kernel cmdline and so the network configuration parameters (man dracut.cmdline) apply here as well. If those aren't specified, it defaults to "ip=dhcp" for each available interface. More complex configuration example ---------------------------------- This script additionally provides visible feedback during boot, sets a password and copies a public ssh key (which has to be in the "combustion" folder). ```bash #!/bin/bash # combustion: network # Redirect output to the console exec > >(exec tee -a /dev/tty0) 2>&1 # Set a password for root, generate the hash with "openssl passwd -6" echo 'root:$5$.wn2BZHlEJ5R3B1C$TAHEchlU.h2tvfOpOki54NaHpGYKwdNhjaBuSpDotD7' | chpasswd -e # Add a public ssh key and enable sshd mkdir -pm700 /root/.ssh/ cat id_rsa_new.pub >> /root/.ssh/authorized_keys systemctl enable sshd.service # Install vim-small zypper --non-interactive install vim-small # Leave a marker echo "Configured with combustion" > /etc/issue.d/combustion ``` How it works ------------ The ignition-dracut-grub2 package created a flag file which tells GRUB 2 that it's the first boot of the system and so GRUB adds ignition.firstboot to the kernel commandline. If this option is found on the kernel cmdline, combustion.service's ConditionKernelCommandLine is fulfilled and it'll be required by initrd.target. This pulls in combustion-prepare.service, which runs after the config drive or QEMU fw_cfg blob appears (see combustion.rules for details). It is read and if the "network" flag comment is present, enables networking for later. After /sysroot is mounted and network is up (if enabled), combustion.service runs, which tries to activate all mountpoints in the system's /etc/fstab and then calls transactional-update in a chroot. In this transactional-update session the script is started and the exit code recorded. If the script failed, transactional-update rollback is called and combustion.service marked as failed, which causes booting to fail. Note that a missing config drive or script is not considered a fatal error and only results in a warning. /sysroot is unmounted and mounted again, so that the default subvolume gets reevaluated and directly booted into. The ignition-firstboot-complete service in the final system runs, which deletes the flag file. This means that combustion is not run on subsequent boots. 07070100000003000081A400000000000000000000000162FE36E4000017A0000000000000000000000000000000000000001F00000000combustion-1.0+git2/combustion#!/bin/bash # SPDX-FileCopyrightText: 2020 SUSE LLC # SPDX-License-Identifier: GPL-2.0-or-later set -euo pipefail config_mount="/run/combustion/mount" if [ "${1-}" = "--prepare" ]; then # Mount config drive mkdir -p "${config_mount}" config_drive_found=0 # Try fw_cfg first if [ -e "/sys/firmware/qemu_fw_cfg/by_name/opt/org.opensuse.combustion" ]; then mkdir -p "${config_mount}/combustion" if ! cp /sys/firmware/qemu_fw_cfg/by_name/opt/org.opensuse.combustion/script/raw \ "${config_mount}/combustion/script"; then echo "Failed to copy script from fw_cfg!" exit 1 fi # TODO: Support other files, e.g. with a tarball or fs image? config_drive_found=1 fi # Try disks next - both lower and upper case for label in combustion COMBUSTION ignition IGNITION; do [ "${config_drive_found}" = "1" ] && break [ -e "/dev/disk/by-label/${label}" ] || continue if ! mount -o ro /dev/disk/by-label/${label} "${config_mount}"; then echo "Failed to mount config drive!" exit 1 fi config_drive_found=1 done if [ "${config_drive_found}" = "0" ]; then echo "No config drive found" exit 0 fi # Check for the magic flag "# combustion: network" in the script if [ -e "${config_mount}/combustion/script" ] \ && grep -qE '^# combustion:(.*)\<network\>' "${config_mount}/combustion/script"; then sh -s <<EOF . /lib/dracut-lib.sh # Set rd.neednet if not already done and reevaluate it (module-specific) getargbool 0 'rd.neednet' && exit 0 echo rd.neednet=1 > /etc/cmdline.d/40-combustion-neednet.conf if [ -e /lib/dracut/hooks/pre-udev/60-net-genrules.sh ]; then # Wicked . /lib/dracut/hooks/pre-udev/60-net-genrules.sh # Re-trigger generation of network rules and apply them udevadm control --reload udevadm trigger --subsystem-match net --action add else # NetworkManager . /lib/dracut/hooks/cmdline/99-nm-config.sh fi EOF fi exit 0 fi # Use /dev/shm for data exchange exchangedir="/dev/shm/combustion/" delete_resolv_conf=0 cleanup() { if findmnt "${config_mount}" >/dev/null; then umount "${config_mount}" || true rmdir "${config_mount}" || true else rm -rf "${config_mount}" || true fi rm -rf "${exchangedir}" || true if [ "${delete_resolv_conf}" -eq 1 ]; then rm -f /sysroot/etc/resolv.conf || true fi # umount and remount so that the new default subvol is used umount -R /sysroot # Manual umount confuses systemd sometimes because it's async and the # .mount unit might still be active when the "start" is queued, making # it a noop, which ultimately leaves /sysroot unmounted # (https://github.com/systemd/systemd/issues/20329). To avoid that, # wait until systemd processed the umount events. In a chroot (or with # SYSTEMD_OFFLINE=1) systemctl always succeeds, so avoid an infinite loop. if ! systemctl --quiet is-active does-not-exist.mount; then while systemctl --quiet is-active sysroot.mount; do sleep 0.5; done fi systemctl start sysroot.mount } # Note: The /sysroot remounting during cleanup happens unconditionally. # This is needed as ignition-mount.service's ExecStop is also disabled unconditionally. trap cleanup EXIT if ! [ -d "${config_mount}/combustion" ]; then echo "No config found - doing nothing." exit 0 fi # Make sure /sysroot is mounted systemctl start sysroot.mount # Same for /sysroot/usr if it exists (e.g. through mount.usr) if systemctl cat sysroot-usr.mount &>/dev/null; then systemctl start sysroot-usr.mount fi # Copy config mkdir "${exchangedir}" config_dir="${exchangedir}/config" cp -R "${config_mount}/combustion" "${config_dir}" if ! [ -e "${config_dir}/script" ]; then echo "No config script found." exit 1 fi # Have to take care of x-initrd.mount first and from the outside awk '$4 ~ /x-initrd.mount/ { system("findmnt /sysroot" $2 " >/dev/null || mount -t " $3 " -o " $4 " " $1 " /sysroot" $2) }' /sysroot/etc/fstab # Make sure the old snapshot is relabeled too, otherwise syncing its /etc fails. if [ -e /lib/dracut/hooks/pre-pivot/50-selinux-microos-relabel.sh ]; then NEWROOT=/sysroot bash -c '. /lib/dracut-lib.sh; . /lib/dracut/hooks/pre-pivot/50-selinux-microos-relabel.sh' elif [ -e /sysroot/.autorelabel ] || [ -e /sysroot/etc/selinux/.autorelabel ]; then echo "Relabel (probably) needed, but selinux-microos-relabel not found." exit 1 fi # Prepare chroot for i in proc sys dev; do mount --rbind /$i /sysroot/$i done mount --make-rslave /sysroot # Mount everything we can, errors deliberately ignored chroot /sysroot mount -a || true # t-u needs writable /var/run and /tmp findmnt /sysroot/run >/dev/null || mount -t tmpfs tmpfs /sysroot/run findmnt /sysroot/tmp >/dev/null || mount -t tmpfs tmpfs /sysroot/tmp # Fake a netconfig setup if [ -r /etc/resolv.conf ]; then mkdir -p /sysroot/run/netconfig/ cp /etc/resolv.conf /sysroot/run/netconfig/resolv.conf if ! [ -e /sysroot/etc/resolv.conf ]; then if ln -sf /run/netconfig/resolv.conf /sysroot/etc/resolv.conf; then delete_resolv_conf=1 fi fi fi if [ -x /sysroot/usr/sbin/transactional-update ]; then # t-u doesn't allow running arbitrary commands and # also ignores the shell's exit code, so DIY. if ! chroot /sysroot transactional-update shell <<EOF; then cd "${config_dir}" chmod a+x script ./script echo \$? > "${exchangedir}/retval" # Snapshot got touched while the policy isn't active, needs relabeling again. [ -e /etc/selinux/.relabelled ] && >> /etc/selinux/.autorelabel EOF echo "transactional-update failed" exit 1 fi if ! [ -e "${exchangedir}/retval" ] || [ "$(cat "${exchangedir}/retval")" -ne 0 ]; then echo "Command failed, rolling back" chroot /sysroot transactional-update --no-selfupdate rollback exit 1 fi else mount -o remount,rw /sysroot if ! chroot /sysroot sh -e -c "cd '${config_dir}'; chmod a+x script; ./script"; then echo "Command failed" exit 1 fi chroot /sysroot snapper --no-dbus create -d "After combustion configuration" || : fi rm -f /sysroot/var/lib/YaST2/reconfig_system exit 0 07070100000004000081A400000000000000000000000162FE36E400000408000000000000000000000000000000000000002F00000000combustion-1.0+git2/combustion-prepare.service[Unit] Description=Combustion (preparations) DefaultDependencies=false # Systemd evaluates Requires/After before conditions, so this unit is pulled in # even when combustion.service won't run. ConditionKernelCommandLine=|ignition.firstboot ConditionKernelCommandLine=|combustion.firstboot # Config drive has to be available Wants=dev-combustion-config.device After=dev-combustion-config.device # If both Ignition and Combustion are active make sure to run their # configuration scripts sequentially, as both try to mount the configuration # device After=ignition-setup-user.service # This reconfigures networking, which runs during the initqueue (wicked) # or has its own service (NM) Before=dracut-initqueue.service nm-initrd.service Conflicts=initrd-switch-root.target umount.target Conflicts=dracut-emergency.service emergency.service emergency.target # Without this it goes into an endless loop on failure OnFailure=emergency.target OnFailureJobMode=isolate [Service] Type=oneshot ExecStart=/usr/bin/combustion --prepare 07070100000005000081A400000000000000000000000162FE36E4000005D0000000000000000000000000000000000000002500000000combustion-1.0+git2/combustion.rules# SPDX-FileCopyrightText: 2020 SUSE LLC # SPDX-License-Identifier: GPL-2.0-or-later # These rules are needed to work around two systemd limitations: # - It's not possible to wait for one of multiple devices to appear # - ConditionKernelCommandLine is evaluated after Wants/After, # so it waits for the devices unnecessarily # Introduce a dev-combustion-config.device unit as alias to the actual device(s). # This is only used for the .service dependencies. # Filesystems with either combustion or ignition as label ACTION=="add", SUBSYSTEM=="block", ENV{ID_FS_LABEL}=="combustion", ENV{SYSTEMD_ALIAS}+="/dev/combustion/config" ACTION=="add", SUBSYSTEM=="block", ENV{ID_FS_LABEL}=="ignition", ENV{SYSTEMD_ALIAS}+="/dev/combustion/config" # QEMU fw_cfg blob with key opt/org.opensuse.combustion ACTION=="add", SUBSYSTEM=="opt", ENV{DEVPATH}=="/firmware/qemu_fw_cfg/by_name/opt/org.opensuse.combustion", ENV{SYSTEMD_ALIAS}+="/dev/combustion/config", TAG+="systemd" # If combustion won't run, alias it to /dev/null to avoid waiting ACTION=="add", SUBSYSTEM=="mem", ENV{DEVPATH}=="/devices/virtual/mem/null", GOTO="combustion_dev_null" GOTO="combustion_end" LABEL="combustion_dev_null" # IMPORT has to be on its own as it returns success or not, even with "="... IMPORT{cmdline}="ignition.firstboot" IMPORT{cmdline}="combustion.firstboot" ENV{ignition.firstboot}!="1", ENV{combustion.firstboot}!="1", ENV{SYSTEMD_ALIAS}+="/dev/combustion/config", TAG+="systemd" LABEL="combustion_end" 07070100000006000081A400000000000000000000000162FE36E4000003F1000000000000000000000000000000000000002700000000combustion-1.0+git2/combustion.service[Unit] Description=Combustion DefaultDependencies=false ConditionKernelCommandLine=|ignition.firstboot ConditionKernelCommandLine=|combustion.firstboot # /sysroot needs to be available, but it's temporarily stopped # for remounting so a direct requirement is not possible Requires=initrd-root-device.target After=initrd-root-device.target # combustion-prepare sets up network, if required Requires=combustion-prepare.service After=combustion-prepare.service # Optionally make network available After=network.target # After ignition completed its stuff After=ignition-complete.target # So that /etc/fstab's x-initrd.mount entries are read (again) later Before=initrd-parse-etc.service Conflicts=initrd-switch-root.target umount.target Conflicts=dracut-emergency.service emergency.service emergency.target # Without this it goes into an endless loop on failure OnFailure=emergency.target OnFailureJobMode=isolate [Service] Type=oneshot ExecStart=/usr/bin/combustion [Install] RequiredBy=initrd.target 07070100000007000081A400000000000000000000000162FE36E4000004D8000000000000000000000000000000000000002400000000combustion-1.0+git2/module-setup.shdepends() { echo bash network systemd url-lib } install() { inst_simple "${moddir}/combustion.service" "${systemdsystemunitdir}/combustion.service" inst_simple "${moddir}/combustion-prepare.service" "${systemdsystemunitdir}/combustion-prepare.service" inst_simple "${moddir}/combustion.rules" "/etc/udev/rules.d/70-combustion.rules" $SYSTEMCTL -q --root "$initdir" enable combustion.service inst_multiple awk chroot findmnt grep rmdir inst_simple "${moddir}/combustion" "/usr/bin/combustion" # ignition-mount.service mounts stuff below /sysroot in ExecStart and umounts # it on ExecStop, failing if umounting fails. This conflicts with the # mounts/umounts done by combustion. Just let combustion do it instead. mkdir -p "${initdir}/${systemdsystemunitdir}/ignition-mount.service.d/" echo -e "[Service]\nExecStop=" > "${initdir}/${systemdsystemunitdir}/ignition-mount.service.d/noexecstop.conf" # Wait up to 10s (30s on aarch64) for the config drive devtimeout=10 [ "$(uname -m)" = "aarch64" ] && devtimeout=30 mkdir -p "${initdir}/${systemdsystemunitdir}/dev-combustion-config.device.d/" echo -e "[Unit]\nJobTimeoutSec=${devtimeout}" > "${initdir}/${systemdsystemunitdir}/dev-combustion-config.device.d/timeout.conf" } 07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!69 blocks
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