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Fix alpine init to deal with netboot (#296)
Signed-off-by: Itxaka <itxaka.garcia@spectrocloud.com>
This commit is contained in:
Itxaka
GitHub
parent
23033a7e5b
commit
c5903e30ab
@ -1,7 +1,7 @@
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packages:
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- name: "alpine"
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category: "distro-kernel"
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version: "6.1.33"
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version: "6.1.34"
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description: "Provides kernel and custom initrd for alpine"
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labels:
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autobump.strategy: "custom"
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@ -11,10 +11,10 @@ packages:
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curl -s https://raw.githubusercontent.com/alpinelinux/aports/3.18-stable/main/linux-lts/APKBUILD | grep "pkgver=" | awk -F"=" '{print $2}'
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autobump.version_hook: |
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curl -s https://raw.githubusercontent.com/alpinelinux/aports/3.18-stable/main/linux-lts/APKBUILD | grep "pkgver=" | awk -F"=" '{print $2}'
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package.version: "6.1.33"
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package.version: "6.1.34"
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- name: "alpine-rpi"
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category: "distro-kernel"
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version: "6.1.33"
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version: "6.1.34"
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description: "Provides kernel and custom initrd for alpine"
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labels:
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autobump.strategy: "custom"
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@ -24,4 +24,4 @@ packages:
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curl -s https://raw.githubusercontent.com/alpinelinux/aports/3.18-stable/main/linux-rpi/APKBUILD | grep "pkgver=" | awk -F"=" '{print $2}'
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autobump.version_hook: |
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curl -s https://raw.githubusercontent.com/alpinelinux/aports/3.18-stable/main/linux-rpi/APKBUILD | grep "pkgver=" | awk -F"=" '{print $2}'
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package.version: "6.1.33"
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package.version: "6.1.34"
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@ -211,6 +211,15 @@ configure_ip() {
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eend $?
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}
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is_url() {
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case "$1" in
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http://*|https://*|ftp://*)
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return 0;;
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*)
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return 1;;
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esac
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}
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/bin/busybox mkdir -p "$ROOT"/usr/bin \
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"$ROOT"/usr/sbin \
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"$ROOT"/proc \
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@ -296,8 +305,40 @@ if grep -q "rd.neednet=1" /proc/cmdline;then
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configure_ip
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fi
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# Path for booting from livecd/netboot/rd.{cos,immucore}.disable
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if grep -q cdroot /proc/cmdline || grep -q netboot /proc/cmdline || grep -q "rd.immucore.disable" /proc/cmdline || grep -q "rd.cos.disable" /proc/cmdline;then
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# Path for booting from netboot
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if grep -q netboot /proc/cmdline; then
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echo "Netbooting"
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for x in $(cat /proc/cmdline); do
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# shellcheck disable=SC2039
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[[ $x = root=live:* ]] || continue
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root=${x#root=live:}
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done
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if ! is_url "$root";then
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echo "$root is not a valid url, cannot continue"
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echo "initramfs emergency recovery shell launched"
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exec /bin/busybox sh
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fi
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sync
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# Create mountpoints
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ebegin "Create mountpoints"
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mkdir -p /media/root-rw /run/rootfsbase $sysroot/media/root-rw $sysroot/run/rootfsbase
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eend $?
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ebegin "Download rootfs"
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wget -q "$root" -O /tmp/rootfs.squashfs
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eend $?
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# Mount squashfs into loop device
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ebegin "Mount rootfs as squashfs device"
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retry 5 losetup /dev/loop0 /tmp/rootfs.squashfs
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eend $?
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sync
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fi
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# Path for booting from livecd
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if grep -q cdroot /proc/cmdline ;then
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echo "Mounting LiveCD"
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sync
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# Create mountpoints
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@ -318,43 +359,46 @@ if grep -q cdroot /proc/cmdline || grep -q netboot /proc/cmdline || grep -q "rd.
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retry 5 losetup /dev/loop0 /media/root-ro/rootfs.squashfs
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eend $?
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sync
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# Mount loop device into the rootfsbase
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ebegin "Mount loop device into rootfsbase"
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retry 5 mount /dev/loop0 /run/rootfsbase
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eend $?
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sync
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# Mount writable overlay tmpfs
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ebegin "Mount base overlay"
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mount -t tmpfs -o "mode=0755,rw,size=25%" root-tmpfs /media/root-rw
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eend $?
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sync
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# Create additional mountpoints and do the overlay mount
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mkdir -p /media/root-rw/work /media/root-rw/root
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ebegin "Mount rootfs overlay into sysroot"
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mount -t overlay -o lowerdir=/run/rootfsbase,upperdir=/media/root-rw/root,workdir=/media/root-rw/work overlayfs $sysroot
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eend $?
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sync
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# immucore to run the initramfs and rootfs stages
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ebegin "Run immucore"
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immucore
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eend $?
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# Move current mounts into sysroot mounts
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# shellcheck disable=SC2002
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cat "$ROOT"/proc/mounts 2>/dev/null | while read DEV DIR TYPE OPTS ; do
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# shellcheck disable=SC2166
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if [ "$DIR" != "/" -a "$DIR" != "$sysroot" -a -d "$DIR" ]; then
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ebegin "Moving $DIR to $sysroot/$DIR"
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mkdir -p $sysroot/$DIR
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mount -o move $DIR $sysroot/$DIR
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eend $?
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fi
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done
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# shellcheck disable=SC2093
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exec switch_root "$sysroot" "$INIT"
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echo "initramfs emergency recovery shell launched"
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exec /bin/busybox sh
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fi
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# shared path for netboot and livecd, we expect the rootfs to be already in /dev/loop0
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if grep -q cdroot /proc/cmdline || grep -q netboot /proc/cmdline;then
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# Mount loop device into the rootfsbase
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ebegin "Mount loop device into rootfsbase"
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retry 5 mount /dev/loop0 /run/rootfsbase
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eend $?
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sync
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# Mount writable overlay tmpfs
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ebegin "Mount base overlay"
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mount -t tmpfs -o "mode=0755,rw,size=25%" root-tmpfs /media/root-rw
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eend $?
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sync
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# Create additional mountpoints and do the overlay mount
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mkdir -p /media/root-rw/work /media/root-rw/root
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ebegin "Mount rootfs overlay into sysroot"
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mount -t overlay -o lowerdir=/run/rootfsbase,upperdir=/media/root-rw/root,workdir=/media/root-rw/work overlayfs $sysroot
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eend $?
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sync
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# immucore to run the initramfs and rootfs stages
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ebegin "Run immucore"
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immucore
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eend $?
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# Move current mounts into sysroot mounts
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# shellcheck disable=SC2002
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cat "$ROOT"/proc/mounts 2>/dev/null | while read DEV DIR TYPE OPTS ; do
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# shellcheck disable=SC2166
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if [ "$DIR" != "/" -a "$DIR" != "$sysroot" -a -d "$DIR" ]; then
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ebegin "Moving $DIR to $sysroot/$DIR"
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mkdir -p $sysroot/$DIR
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mount -o move $DIR $sysroot/$DIR
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eend $?
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fi
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done
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# shellcheck disable=SC2093
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exec switch_root "$sysroot" "$INIT"
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echo "initramfs emergency recovery shell launched"
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exec /bin/busybox sh
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fi
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# Path for booting active/passive/recovery
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ebegin "Run immucore"
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