added mkinitramfs

1 files changed, 369 insertions, 0 deletions

diff --git a/repo/system/mkinitramfs.xibuild b/repo/system/mkinitramfs.xibuild
new file mode 100644
index 0000000..f7c61f8
--- /dev/null
+++ b/repo/system/mkinitramfs.xibuild
@@ -0,0 +1,369 @@
+#!/bin/bash
+
+DEPS=(sh)
+
+PKG_VER=0.1
+DESC="Scripts to make initramfs"
+
+package () {
+    mkdir -pv $PKG_DEST/usr/sbin/
+    cat > $PKG_DEST/usr/sbin/mkinitramfs << "EOF"
+#!/bin/bash
+# This file based in part on the mkinitramfs script for the LFS LiveCD
+# written by Alexander E. Patrakov and Jeremy Huntwork.
+
+copy()
+{
+  local file
+
+  if [ "$2" = "lib" ]; then
+    file=$(PATH=/usr/lib type -p $1)
+  else
+    file=$(type -p $1)
+  fi
+
+  if [ -n "$file" ] ; then
+    cp $file $WDIR/usr/$2
+  else
+    echo "Missing required file: $1 for directory $2"
+    rm -rf $WDIR
+    exit 1
+  fi
+}
+
+if [ -z $1 ] ; then
+  INITRAMFS_FILE=initrd.img-no-kmods
+else
+  KERNEL_VERSION=$1
+  INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
+fi
+
+if [ -n "$KERNEL_VERSION" ] && [ ! -d "/usr/lib/modules/$1" ] ; then
+  echo "No modules directory named $1"
+  exit 1
+fi
+
+printf "Creating $INITRAMFS_FILE... "
+
+binfiles="sh cat cp dd killall ls mkdir mknod mount "
+binfiles="$binfiles umount sed sleep ln rm uname"
+binfiles="$binfiles readlink basename"
+
+# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
+if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi
+
+sbinfiles="modprobe blkid switch_root"
+
+# Optional files and locations
+for f in mdadm mdmon udevd udevadm; do
+  if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
+done
+
+# Add lvm if present (cannot be done with the others because it
+# also needs dmsetup
+if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi
+
+unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)
+
+DATADIR=/usr/share/mkinitramfs
+INITIN=init.in
+
+# Create a temporary working directory
+WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)
+
+# Create base directory structure
+mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
+mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
+touch $WDIR/etc/modprobe.d/modprobe.conf
+ln -s usr/bin  $WDIR/bin
+ln -s usr/lib  $WDIR/lib
+ln -s usr/sbin $WDIR/sbin
+ln -s lib      $WDIR/lib64
+
+# Create necessary device nodes
+mknod -m 640 $WDIR/dev/console c 5 1
+mknod -m 664 $WDIR/dev/null    c 1 3
+
+# Install the udev configuration files
+if [ -f /etc/udev/udev.conf ]; then
+  cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
+fi
+
+for file in $(find /etc/udev/rules.d/ -type f) ; do
+  cp $file $WDIR/etc/udev/rules.d
+done
+
+# Install any firmware present
+cp -a /usr/lib/firmware $WDIR/usr/lib
+
+# Copy the RAID configuration file if present
+if [ -f /etc/mdadm.conf ] ; then
+  cp /etc/mdadm.conf $WDIR/etc
+fi
+
+# Install the init file
+install -m0755 $DATADIR/$INITIN $WDIR/init
+
+if [  -n "$KERNEL_VERSION" ] ; then
+  if [ -x /usr/bin/kmod ] ; then
+    binfiles="$binfiles kmod"
+  else
+    binfiles="$binfiles lsmod"
+    sbinfiles="$sbinfiles insmod"
+  fi
+fi
+
+# Install basic binaries
+for f in $binfiles ; do
+  ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
+  copy /usr/bin/$f bin
+done
+
+for f in $sbinfiles ; do
+  ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
+  copy $f sbin
+done
+
+# Add udevd libraries if not in /usr/sbin
+if [ -x /usr/lib/udev/udevd ] ; then
+  ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 >> $unsorted
+elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
+  ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 >> $unsorted
+fi
+
+# Add module symlinks if appropriate
+if [ -n "$KERNEL_VERSION" ] && [ -x /usr/bin/kmod ] ; then
+  ln -s kmod $WDIR/usr/bin/lsmod
+  ln -s kmod $WDIR/usr/bin/insmod
+fi
+
+# Add lvm symlinks if appropriate
+# Also copy the lvm.conf file
+if  [ -x /usr/sbin/lvm ] ; then
+  ln -s lvm $WDIR/usr/sbin/lvchange
+  ln -s lvm $WDIR/usr/sbin/lvrename
+  ln -s lvm $WDIR/usr/sbin/lvextend
+  ln -s lvm $WDIR/usr/sbin/lvcreate
+  ln -s lvm $WDIR/usr/sbin/lvdisplay
+  ln -s lvm $WDIR/usr/sbin/lvscan
+
+  ln -s lvm $WDIR/usr/sbin/pvchange
+  ln -s lvm $WDIR/usr/sbin/pvck
+  ln -s lvm $WDIR/usr/sbin/pvcreate
+  ln -s lvm $WDIR/usr/sbin/pvdisplay
+  ln -s lvm $WDIR/usr/sbin/pvscan
+
+  ln -s lvm $WDIR/usr/sbin/vgchange
+  ln -s lvm $WDIR/usr/sbin/vgcreate
+  ln -s lvm $WDIR/usr/sbin/vgscan
+  ln -s lvm $WDIR/usr/sbin/vgrename
+  ln -s lvm $WDIR/usr/sbin/vgck
+  # Conf file(s)
+  cp -a /etc/lvm $WDIR/etc
+fi
+
+# Install libraries
+sort $unsorted | uniq | while read library ; do
+# linux-vdso and linux-gate are pseudo libraries and do not correspond to a file
+# libsystemd-shared is in /lib/systemd, so it is not found by copy, and
+# it is copied below anyway
+  if [[ "$library" == linux-vdso.so.1 ]] ||
+     [[ "$library" == linux-gate.so.1 ]] ||
+     [[ "$library" == libsystemd-shared* ]]; then
+    continue
+  fi
+
+  copy $library lib
+done
+
+if [ -d /usr/lib/udev ]; then
+  cp -a /usr/lib/udev $WDIR/usr/lib
+fi
+if [ -d /usr/lib/systemd ]; then
+  cp -a /usr/lib/systemd $WDIR/usr/lib
+fi
+if [ -d /usr/lib/elogind ]; then
+  cp -a /usr/lib/elogind $WDIR/usr/lib
+fi
+
+# Install the kernel modules if requested
+if [ -n "$KERNEL_VERSION" ]; then
+  find                                                                        \
+     /usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib}                      \
+     /usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,md,firewire}      \
+     /usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
+     /usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage}           \
+     -type f 2> /dev/null | cpio --make-directories -p --quiet $WDIR
+
+  cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order}                     \
+            $WDIR/usr/lib/modules/$KERNEL_VERSION
+
+  depmod -b $WDIR $KERNEL_VERSION
+fi
+
+( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) > $INITRAMFS_FILE
+
+# Prepare early loading of microcode if available
+if ls /usr/lib/firmware/intel-ucode/* >/dev/null 2>&1 ||
+   ls /usr/lib/firmware/amd-ucode/*   >/dev/null 2>&1; then
+
+# first empty WDIR to reuse it
+  rm -r $WDIR/*
+
+  DSTDIR=$WDIR/kernel/x86/microcode
+  mkdir -p $DSTDIR
+
+  if [ -d /usr/lib/firmware/amd-ucode ]; then
+    cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin > $DSTDIR/AuthenticAMD.bin
+  fi
+
+  if [ -d /usr/lib/firmware/intel-ucode ]; then
+    cat /usr/lib/firmware/intel-ucode/* > $DSTDIR/GenuineIntel.bin
+  fi
+
+  ( cd $WDIR; find . | cpio -o -H newc --quiet ) > microcode.img
+  cat microcode.img $INITRAMFS_FILE > tmpfile
+  mv tmpfile $INITRAMFS_FILE
+  rm microcode.img
+fi
+
+# Remove the temporary directories and files
+rm -rf $WDIR $unsorted
+printf "done.\n"
+
+EOF
+
+    chmod 0755 $PKG_DEST/usr/sbin/mkinitramfs
+
+    mkdir -p $PKG_DEST/usr/share/mkinitramfs &&
+    cat > $PKG_DEST/usr/share/mkinitramfs/init.in << "EOF"
+#!/bin/sh
+
+PATH=/usr/bin:/usr/sbin
+export PATH
+
+problem()
+{
+   printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
+   sh
+}
+
+no_device()
+{
+   printf "The device %s, which is supposed to contain the\n" $1
+   printf "root file system, does not exist.\n"
+   printf "Please fix this problem and exit this shell.\n\n"
+}
+
+no_mount()
+{
+   printf "Could not mount device %s\n" $1
+   printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
+   printf "Maybe the device is formatted with an unsupported file system?\n\n"
+   printf "Or maybe filesystem type autodetection went wrong, in which case\n"
+   printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
+   printf "Available partitions:\n"
+}
+
+do_mount_root()
+{
+   mkdir /.root
+   [ -n "$rootflags" ] && rootflags="$rootflags,"
+   rootflags="$rootflags$ro"
+
+   case "$root" in
+      /dev/*    ) device=$root ;;
+      UUID=*    ) eval $root; device="/dev/disk/by-uuid/$UUID" ;;
+      PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
+      LABEL=*   ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
+      ""        ) echo "No root device specified." ; problem ;;
+   esac
+
+   while [ ! -b "$device" ] ; do
+       no_device $device
+       problem
+   done
+
+   if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
+       no_mount $device
+       cat /proc/partitions
+       while true ; do sleep 10000 ; done
+   else
+       echo "Successfully mounted device $root"
+   fi
+}
+
+do_try_resume()
+{
+   case "$resume" in
+      UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID"  ;;
+      LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
+   esac
+
+   if $noresume || ! [ -b "$resume" ]; then return; fi
+
+   ls -lH "$resume" | ( read x x x x maj min x
+       echo -n ${maj%,}:$min > /sys/power/resume )
+}
+
+init=/sbin/init
+root=
+rootdelay=
+rootfstype=auto
+ro="ro"
+rootflags=
+device=
+resume=
+noresume=false
+
+mount -n -t devtmpfs devtmpfs /dev
+mount -n -t proc     proc     /proc
+mount -n -t sysfs    sysfs    /sys
+mount -n -t tmpfs    tmpfs    /run
+
+read -r cmdline < /proc/cmdline
+
+for param in $cmdline ; do
+  case $param in
+    init=*      ) init=${param#init=}             ;;
+    root=*      ) root=${param#root=}             ;;
+    rootdelay=* ) rootdelay=${param#rootdelay=}   ;;
+    rootfstype=*) rootfstype=${param#rootfstype=} ;;
+    rootflags=* ) rootflags=${param#rootflags=}   ;;
+    resume=*    ) resume=${param#resume=}         ;;
+    noresume    ) noresume=true                   ;;
+    ro          ) ro="ro"                         ;;
+    rw          ) ro="rw"                         ;;
+  esac
+done
+
+# udevd location depends on version
+if [ -x /sbin/udevd ]; then
+  UDEVD=/sbin/udevd
+elif [ -x /lib/udev/udevd ]; then
+  UDEVD=/lib/udev/udevd
+elif [ -x /lib/systemd/systemd-udevd ]; then
+  UDEVD=/lib/systemd/systemd-udevd
+else
+  echo "Cannot find udevd nor systemd-udevd"
+  problem
+fi
+
+${UDEVD} --daemon --resolve-names=never
+udevadm trigger
+udevadm settle
+
+if [ -f /etc/mdadm.conf ] ; then mdadm -As                       ; fi
+if [ -x /sbin/vgchange  ] ; then /sbin/vgchange -a y > /dev/null ; fi
+if [ -n "$rootdelay"    ] ; then sleep "$rootdelay"              ; fi
+
+do_try_resume # This function will not return if resuming from disk
+do_mount_root
+
+killall -w ${UDEVD##*/}
+
+exec switch_root /.root "$init" "$@"
+
+EOF
+
+}