change owner to root in initramfs

Signed-off-by: Nico Schottelius <nico@wurzel.schottelius.org>

hacking/v3-busybox/all.sh

@@ -3,7 +3,11 @@
 rm -rf preos
 mkdir -p preos/boot
 
-./create_initramfs.sh > preos/boot/initramfs
+initramfs=preos/boot/initramfs
+
+./create_initramfs.sh > "$initramfs"
 ./add_kernel_isolinux.sh preos
 ./copy_bin_with_libs.sh preos
 ./create_iso.sh preos preos.iso
+
+exit 0

hacking/v3-busybox/copy_bin_with_libs.sh

@@ -13,13 +13,17 @@ fi
 
 out_dir=$1
 
+# TODO:
+# - various mkfs 
+
 #bin_list="udevadm bash fdisk mount syslinux umount rm mv"
-bin_list="udevadm fdisk"
+bin_list="udevadm fdisk sshd ssh-keygen"
+
+# debug tools
+bin_list="$bin_list strace less"
 
 libs=$(mktemp /tmp/cdist-preos-libs.XXXXXXXXXXXXX)
 
-mkdir -p "$out_dir/bin" "$out_dir/lib"
-
 (   
     for bin in $bin_list; do
         src=$(which "$bin")
@@ -31,30 +35,10 @@ mkdir -p "$out_dir/bin" "$out_dir/lib"
 
 
 while read lib; do
-    if echo $lib | grep '^/'; then
+    if echo $lib | grep -q '^/'; then
         # echo "Copying fqdn lib $lib ..."
         cp "$lib" "$out_dir/lib"
-    else
-        echo "How to copy $lib ?"
     fi
 done < "$libs"
 
-
 rm -f "$libs"
-
-exit 0
-
-
-bin=$1
-
-# Not used alternatives
-# new_list=$(objdump -p /usr/bin/ls | awk '$1 ~ /NEEDED/ { print $2 }')
-# ldconfig -p | grep 'libBrokenLocale.so.1$' | sed 's/.* => //'
-
-
-for new_item in $new_list; do
-    
-
-done
-
-ldconfig -p | 

hacking/v3-busybox/create_initramfs.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
-set -ex
+set -e
 
+here=$(pwd -P)
 
 initramfs_dir=$(mktemp -d /tmp/cdist-preos.XXXXXXX)
 # initramfs_dir=$1
@@ -18,15 +19,19 @@ for link in sh mount; do
 done
 
 cd "${initramfs_dir}"
-find . | cpio -H newc -o | gzip
 
+# Add Arch Linux initramfs with kernel modules included
+zcat /boot/initramfs-linux-fallback.img | cpio -i
+
+# Add helper binaries
+"$here/copy_bin_with_libs.sh" "$initramfs_dir" >/dev/null 2>&1
+"$here/sshd_config.sh" "$initramfs_dir"
+
+
+# Create new initramfs
+find . | cpio -H newc -R root -o | gzip
+
+# echo ${initramfs_dir}
 rm -rf "${initramfs_dir}"
 
 exit 0
-
-# TODO:
-# - Kernel modules
-# - ssh
-# - various mkfs
-# - libs
-

hacking/v3-busybox/init

@@ -10,52 +10,23 @@ mount -t sysfs sysfs /sys
 # Disable kernel messages from popping onto the screen
 echo 0 > /proc/sys/kernel/printk
 
-
 # Create device nodes
 mknod /dev/null c 1 3
 mknod /dev/tty c 5 0
 mdev -s
 
-#Function for parsing command line options with "=" in them
-# get_opt("init=/sbin/init") will return "/sbin/init"
-get_opt() {
-    echo "$@" | cut -d "=" -f 2
-}
+# udev stuff
+kmod static-nodes --format=tmpfiles --output=/run/tmpfiles.d/kmod.conf
+systemd-tmpfiles --prefix=/dev --create --boot
+/usr/lib/systemd/systemd-udevd --daemon --resolve-names=never
+udevadm trigger --action=add --type=subsystems
+udevadm trigger --action=add --type=devices
+udevadm settle
 
-#Defaults
-init="/sbin/init"
-root="/dev/hda1"
-
-#Process command line options
-for i in $(cat /proc/cmdline); do
-    case $i in
-        root\=*)
-            root=$(get_opt $i)
-            ;;
-        init\=*)
-            init=$(get_opt $i)
-            ;;
-    esac
-done
+# /bin/sshd
 
+# Generate keys for sshd
+echo "Generating keys for sshd"
+ssh-keygen -A
 
 exec sh
-
-# Skipping the rest
-
-#Mount the root device
-mount "${root}" /newroot
-
-#Check if $init exists and is executable
-if [[ -x "/newroot/${init}" ]] ; then
-    #Unmount all other mounts so that the ram used by
-    #the initramfs can be cleared after switch_root
-    umount /sys /proc
-    
-    #Switch to the new root and execute init
-    exec switch_root /newroot "${init}"
-fi
-
-#This will only be run if the exec above failed
-echo "Failed to switch_root, dropping to a shell"
-exec sh

hacking/v3-busybox/sshd_config.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+
+if [ "$#" -ne 1 ]; then
+    echo "$0: output directory"
+    exit 1
+fi
+
+dir=$1
+
+mkdir -p "$dir/etc/ssh"
+mkdir -p "$dir/root/.ssh"
+mkdir -p "$dir/lib"
+
+cat << eof > "$dir/etc/ssh/sshd_config"
+# cdist generated - do not modify
+PermitRootLogin without-password
+eof
+
+cat << eof > "$dir/etc/passwd"
+root:x:0:0:root:/root:/bin/bash
+nobody:x:99:99:nobody:/:/bin/false
+eof
+
+cat << eof > "$dir/etc/group"
+root:x:0:root
+nobody:x:99:
+eof
+
+# libpam not found
+# /etc/ssl/openssl.cnf
+# /etc/gai.conf
+# no nscd socket
+# /etc/nsswitch.conf
+# libnss_compat.so.2
+# libnss_files.so.2
+
+# Fixes the user problem
+cp /lib/libnss* "$dir/lib"
+
+# Required by sshd
+mkdir -p "$dir/var/empty"
+chmod 0700 "$dir/var/empty"
+
+#cat << eof > "$dir/etc/shadow"
+#root:x:0:0:root:/root:/bin/bash
+#nobody:x:1::::::
+#eof
+