mirror of
https://github.com/kiddin9/op-packages.git
synced 2026-07-30 14:01:38 +08:00
150 lines
4.4 KiB
Bash
Executable File
150 lines
4.4 KiB
Bash
Executable File
#!/bin/sh
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NEWROOT=/rom
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PATCHROM=/tmp/rom
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SHAREDMNT=false
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mountpoint -q /mnt && SHAREDMNT=true
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mount --make-private /
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mount --make-private /sys
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mount --make-rprivate /tmp 2>/dev/null
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mount --make-rprivate /proc
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mount --make-private /rom
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mount --make-private /overlay
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mount -t tmpfs -o ro,relatime tmpfs /sys/block
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mount -t tmpfs -o size=1M tmpfs /tmp
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# make all private except /mnt
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mkdir -p $PATCHROM
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mount --bind / $PATCHROM
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mount --move /proc $PATCHROM/proc
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# move /mnt to tmproot/mnt
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$SHAREDMNT && mount --move /mnt $PATCHROM/mnt
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pivot_root $PATCHROM $PATCHROM/tmp || exit 1
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# old root now in /tmp
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mount --make-rprivate /tmp
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$SHAREDMNT && mount --move /mnt /tmp/mnt
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mount --move /proc /tmp/proc
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pivot_root /tmp /tmp$PATCHROM || exit 1
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umount $PATCHROM
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# umount annoying docker rootfs
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if $SHAREDMNT; then
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OLDROOTFS=`grep -m1 "^overlay / overlay" /proc/1/mounts | sed -nE 's#^.*,workdir=(/mnt/.*)/work 0 0$#\1/merged#p'`
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if [ -n "$OLDROOTFS" ]; then
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echo "umount $OLDROOTFS" >&2
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mount --make-rprivate "$OLDROOTFS"
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umount -l "$OLDROOTFS"
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fi
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fi
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# patch rom
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LOWERDIR=/rom
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mkdir -p /tmp/tmp/shadowrt /tmp/patch/upper/usr/libexec /tmp/patch/work
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cp -a /rom/sbin/kmodloader /tmp/patch/upper/usr/libexec/
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for o in 0 2; do
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cp -a /shadowrt/overwrite/$o/. /tmp/patch/upper/
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done
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OVERLAYFS_UUID=",uuid=null"
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if ! mount -o noatime,lowerdir=$LOWERDIR,upperdir=/tmp/patch/upper,workdir=/tmp/patch/work,xino=off$OVERLAYFS_UUID \
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-t overlay "/dev/root" $PATCHROM ; then
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OVERLAYFS_UUID=""
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mount -o noatime,lowerdir=$LOWERDIR,upperdir=/tmp/patch/upper,workdir=/tmp/patch/work,xino=off \
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-t overlay "/dev/root" $PATCHROM || exit 1
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fi
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mount --bind /tmp/tmp $PATCHROM/tmp
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mount --bind /shadowrt $PATCHROM/tmp/shadowrt
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chroot $PATCHROM /tmp/shadowrt/s1-chroot-patchrom.sh
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umount $PATCHROM/tmp/shadowrt
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umount $PATCHROM/tmp
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rm -rf /tmp/tmp
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set_default_ip()
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{
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local ip=$1
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[ -n "$ip" ] || return 1
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echo "pass ip address to shadow: $ip" >&2
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sed -i -e "s/^IP_PROTO=.*/IP_PROTO=static/g" -e "s#^IP_ADDRESS=.*#IP_ADDRESS=$ip#g" "$PATCHROM/bin/board_detect"
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}
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set_default_gw_dns()
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{
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local gw=$1
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local dns="$2"
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echo "pass gateway/dns to shadow: $gw/$dns" >&2
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sed -i -e "s/^GATEWAY=.*/GATEWAY=$gw/g" -e "s/^DNS=.*/DNS='$dns'/g" "$PATCHROM/etc/uci-defaults/zzz-dockerenv"
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}
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set_default_network()
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{
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if [ "dhcp" != "$IP_PROTO" ]; then
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# ip
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local ip=$IP_ADDRESS
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[ -z "$ip" ] && ip=`ip addr show dev eth0 | grep -m1 'inet ' | head -1 | sed -nE 's#.*inet ([0-9\.]*)/([0-9]*) .*#\1/\2#p'`
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set_default_ip "$ip"
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# gateway dns
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local gw dns
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gw=$IP_GATEWAY
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dns="$IP_DNS"
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[ -z "$gw" ] && gw="$(route -n | grep -m1 '^0\.0\.0\.0 .* eth0$' | head -1 | xargs -r sh -c 'echo $1')"
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[ -z "$dns" ] && dns="$(grep '^nameserver ' /etc/resolv.conf | grep -oE '\d+\.\d+\.\d+\.\d+' | xargs -r sh -c 'echo $@' ignored)"
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set_default_gw_dns "$gw" "$dns"
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[ "on" = "$DHCP_SERVER" ] && sed -i -e "s/^DHCP_SERVER=.*/DHCP_SERVER=1/g" "$PATCHROM/etc/uci-defaults/zzz-dockerenv"
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fi
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}
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set_default_network
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export -n IP_PROTO IP_ADDRESS IP_GATEWAY IP_DNS DHCP_SERVER
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unset IP_PROTO IP_ADDRESS IP_GATEWAY IP_DNS DHCP_SERVER
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umount $PATCHROM
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# make sysctl net.* writable
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mount --bind -o rw /proc/sys/net /proc/sys/net
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# workaround busybox mount bug (alpine 3.22.2 arm64/v8)
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grep '^proc /proc' /proc/mounts > /tmp/proconly.txt
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sh -c 'mount --bind /tmp/proconly.txt /proc/$$/mounts && exec mount -o rw,remount /proc/sys/net'
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rm -f /tmp/proconly.txt
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PROCD_VER=`grep -o '^Version: [0-9]*' /rom/usr/lib/opkg/info/procd.control | cut -d' ' -f2`
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if [ -n "$PROCD_VER" -a "$PROCD_VER" -lt 2024 ]; then
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# workaround procd < 2024 infite loop on resolving rootfs type, e.g. `ubus call system board`
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echo "overwrite /proc/$$/mounts for bug on procd v$PROCD_VER" >&2
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echo "/dev/root /rom squashfs ro,relatime 0 0" > /tmp/procd_mounts.txt
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cat /proc/mounts | grep -v '^tmpfs /tmp tmpfs' | grep -v ' /shadowrt ' >> /tmp/procd_mounts.txt
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mount --bind /tmp/procd_mounts.txt /proc/$$/mounts
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rm -f /tmp/procd_mounts.txt
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fi
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# mount openwrt rootfs
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mount -o ro,noatime,lowerdir=/tmp/patch/upper:$LOWERDIR,xino=off$OVERLAYFS_UUID \
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-t overlay "/dev/root" /rom || exit 1
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umount /tmp
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mount --bind -o private /overlay $NEWROOT/overlay
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$SHAREDMNT && mount --move /mnt $NEWROOT/mnt
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mount --move /dev $NEWROOT/dev
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mount --move /sys $NEWROOT/sys
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mount --move /shadowrt $NEWROOT/tmp/busy
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mount --move /proc $NEWROOT/proc
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pivot_root $NEWROOT $NEWROOT/tmp/oldroot || exit 1
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cd /
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exec /tmp/busy/s2-wrtroot.sh "$1" "/tmp/oldroot"
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