204 lines
5.1 KiB
Bash
Executable File
204 lines
5.1 KiB
Bash
Executable File
#!/bin/bash
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# This file based in part on the mkinitrafms script for the LFS LiveCD
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# written by Alexander E. Patrakov and Jeremy Huntwork.
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copy()
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{
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local file
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if [ "$2" == "lib" ]; then
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file=$(PATH=/lib:/usr/lib type -p $1)
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else
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file=$(type -p $1)
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fi
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if [ -n $file ] ; then
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cp $file $WDIR/$2
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else
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echo "Missing required file: $1 for directory $2"
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rm -rf $WDIR
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exit 1
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fi
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}
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if [ -z $1 ] ; then
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KERNEL_VERSION=`uname -r`
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else
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KERNEL_VERSION=$1
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fi
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INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
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if [ -n "$KERNEL_VERSION" ] && [ ! -d "/lib/modules/$1" ] ; then
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echo "No modules directory named $1"
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exit 1
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fi
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printf "Creating $INITRAMFS_FILE...\n"
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binfiles="dmesg sh cat cp dd killall ls mkdir mknod mount"
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binfiles="$binfiles umount sed sleep ln rm uname"
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# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
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if [ -x /bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi
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sbinfiles="modprobe blkid switch_root zfs zpool"
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#Optional files and locations
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for f in mdadm udevd udevadm; do
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if [ -x /sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
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done
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unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)
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DATADIR=/usr/share/mkinitramfs
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INITIN=init.in
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# Create a temporrary working directory
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WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)
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# Create base directory structure
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mkdir -p $WDIR/{bin,dev,lib/firmware,run,sbin,sys,proc}
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mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
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touch $WDIR/etc/modprobe.d/modprobe.conf
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cp /etc/modprobe.d/* $WDIR/etc/modprobe.d
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ln -s lib $WDIR/lib64
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# Create necessary device nodes
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mknod -m 640 $WDIR/dev/console c 5 1
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mknod -m 664 $WDIR/dev/null c 1 3
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# Install the udev configuration files
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if [ -f /etc/udev/udev.conf ]; then
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cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
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fi
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for file in $(find /etc/udev/rules.d/ -type f) ; do
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cp $file $WDIR/etc/udev/rules.d
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done
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# Install any firmware present
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if [ -d /lib/firmware ]; then
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cp -a /lib/firmware $WDIR/lib
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fi
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# Copy the RAID configuration file if present
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if [ -f /etc/mdadm.conf ] ; then
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cp /etc/mdadm.conf $WDIR/etc
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fi
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# Install the init file
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install -m0755 $DATADIR/$INITIN $WDIR/init
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if [ -n "$KERNEL_VERSION" ] ; then
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if [ -x /bin/kmod ] ; then
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binfiles="$binfiles kmod"
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else
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binfiles="$binfiles lsmod"
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sbinfiles="$sbinfiles insmod"
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fi
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fi
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# Install basic binaries
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for f in $binfiles ; do
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if [ -x /bin/$f ]; then
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ldd /bin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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copy $f bin
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fi
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done
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# Add lvm if present
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if [ -x /sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi
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for f in $sbinfiles ; do
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if [ -x /sbin/$f ]; then
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ldd /sbin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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copy $f sbin
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fi
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done
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# Add module symlinks if appropriate
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if [ -n "$KERNEL_VERSION" ] && [ -x /bin/kmod ] ; then
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ln -s kmod $WDIR/bin/lsmod
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ln -s kmod $WDIR/bin/insmod
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fi
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# Add lvm symlinks if appropriate
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# Also copy the lvm.conf file
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if [ -x /sbin/lvm ] ; then
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ln -s lvm $WDIR/sbin/lvchange
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ln -s lvm $WDIR/sbin/lvrename
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ln -s lvm $WDIR/sbin/lvextend
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ln -s lvm $WDIR/sbin/lvcreate
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ln -s lvm $WDIR/sbin/lvdisplay
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ln -s lvm $WDIR/sbin/lvscan
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ln -s lvm $WDIR/sbin/pvchange
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ln -s lvm $WDIR/sbin/pvck
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ln -s lvm $WDIR/sbin/pvcreate
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ln -s lvm $WDIR/sbin/pvdisplay
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ln -s lvm $WDIR/sbin/pvscan
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ln -s lvm $WDIR/sbin/vgchange
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ln -s lvm $WDIR/sbin/vgcreate
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ln -s lvm $WDIR/sbin/vgscan
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ln -s lvm $WDIR/sbin/vgrename
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ln -s lvm $WDIR/sbin/vgck
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# Conf file(s)
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cp -a /etc/lvm $WDIR/etc
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fi
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# Add mtab symlink for zfs
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ln -s /proc/mounts $WDIR/etc/mtab
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# Install libraries
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sort $unsorted | uniq | while read library ; do
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if [ "$library" == "linux-vdso.so.1" ] ||
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[ "$library" == "linux-gate.so.1" ]; then
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continue
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fi
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copy $library lib
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done
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if [ -d /lib/udev ]; then
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cp -a /lib/udev $WDIR/lib
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fi
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#ls -lR $WDIR
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mkdir -p $WDIR/lib/modules/$KERNEL_VERSION
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touch $WDIR/lib/modules/$KERNEL_VERSION/modules.{builtin,order}
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# Install the kernel modules in use
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# May want to work on removing unnecessary modules at some point
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# though in most cases this should probably be good enough
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printf "Copying modules...\n"
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for module in `cat /proc/modules|awk '{print $1}'`; do
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cp --parents `modinfo -F filename $module` $WDIR/;
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done
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depmod -b $WDIR $KERNEL_VERSION
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#if [ -n "$KERNEL_VERSION" ]; then
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# find \
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# /lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
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# /lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,md,firewire} \
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# /lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
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# /lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
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# /lib/modules/$KERNEL_VERSION/extra/{avl,nvpair,spl,unicode,zcommon,zfs} \
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# -type f 2> /dev/null | cpio --make-directories -p --quiet $WDIR
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#
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# cp /lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
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# $WDIR/lib/modules/$KERNEL_VERSION
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#
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# depmod -b $WDIR $KERNEL_VERSION
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#fi
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printf "Creating gzipped cpio...\n";
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( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) > /boot/$INITRAMFS_FILE
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# Remove the temporary directory and file
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rm -rf $WDIR $unsorted
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printf "done.\n"
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