227 lines
6.2 KiB
Bash
227 lines
6.2 KiB
Bash
#!/bin/sh
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# This file based in part on the mkinitramfs 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=/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/usr/$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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INITRAMFS_FILE=initrd.img-no-kmods
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else
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KERNEL_VERSION=$1
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INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
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fi
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if [ -n "$KERNEL_VERSION" ] && [ ! -d "/usr/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 $INITRAMFS_FILE... "
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binfiles="sh cat cp dd killall ls mkdir mknod mount "
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binfiles="$binfiles umount sed sleep ln rm uname"
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binfiles="$binfiles readlink basename"
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# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
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if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi
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sbinfiles="modprobe blkid switch_root"
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# Optional files and locations
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for f in mdadm mdmon udevd udevadm; do
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if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
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done
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# Add lvm if present (cannot be done with the others because it
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# also needs dmsetup
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if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi
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unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)
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DATADIR=/usr/share/mkinitramfs
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INITIN=init.in
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# Create a temporary working directory
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WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)
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# Create base directory structure
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mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
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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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ln -s usr/bin $WDIR/bin
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ln -s usr/lib $WDIR/lib
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ln -s usr/sbin $WDIR/sbin
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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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cp -a /usr/lib/firmware $WDIR/usr/lib
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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 /usr/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 $binfiles ; do
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ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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copy /usr/bin/$f bin
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done
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for f in $sbinfiles ; do
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ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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copy $f sbin
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done
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# Add udevd libraries if not in /usr/sbin
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if [ -x /usr/lib/udev/udevd ] ; then
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ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
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ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 >> $unsorted
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fi
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# Add module symlinks if appropriate
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if [ -n "$KERNEL_VERSION" ] && [ -x /usr/bin/kmod ] ; then
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ln -s kmod $WDIR/usr/bin/lsmod
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ln -s kmod $WDIR/usr/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 /usr/sbin/lvm ] ; then
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ln -s lvm $WDIR/usr/sbin/lvchange
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ln -s lvm $WDIR/usr/sbin/lvrename
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ln -s lvm $WDIR/usr/sbin/lvextend
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ln -s lvm $WDIR/usr/sbin/lvcreate
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ln -s lvm $WDIR/usr/sbin/lvdisplay
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ln -s lvm $WDIR/usr/sbin/lvscan
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ln -s lvm $WDIR/usr/sbin/pvchange
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ln -s lvm $WDIR/usr/sbin/pvck
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ln -s lvm $WDIR/usr/sbin/pvcreate
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ln -s lvm $WDIR/usr/sbin/pvdisplay
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ln -s lvm $WDIR/usr/sbin/pvscan
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ln -s lvm $WDIR/usr/sbin/vgchange
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ln -s lvm $WDIR/usr/sbin/vgcreate
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ln -s lvm $WDIR/usr/sbin/vgscan
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ln -s lvm $WDIR/usr/sbin/vgrename
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ln -s lvm $WDIR/usr/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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# Install libraries
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sort $unsorted | uniq | while read library ; do
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# linux-vdso and linux-gate are pseudo libraries and do not correspond to a file
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# libsystemd-shared is in /lib/systemd, so it is not found by copy, and
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# it is copied below anyway
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if [[ "$library" == linux-vdso.so.1 ]] ||
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[[ "$library" == linux-gate.so.1 ]] ||
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[[ "$library" == libsystemd-shared* ]]; 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 /usr/lib/udev ]; then
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cp -a /usr/lib/udev $WDIR/usr/lib
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fi
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if [ -d /usr/lib/systemd ]; then
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cp -a /usr/lib/systemd $WDIR/usr/lib
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fi
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if [ -d /usr/lib/elogind ]; then
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cp -a /usr/lib/elogind $WDIR/usr/lib
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fi
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# Install the kernel modules if requested
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if [ -n "$KERNEL_VERSION" ]; then
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find \
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/usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
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/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,nvme,md,firewire} \
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/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
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/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
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-type f 2> /dev/null | cpio --make-directories -p --quiet $WDIR
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cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
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$WDIR/usr/lib/modules/$KERNEL_VERSION
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if [ -f /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo ]; then
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cp /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo \
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$WDIR/usr/lib/modules/$KERNEL_VERSION
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fi
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depmod -b $WDIR $KERNEL_VERSION
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fi
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( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) > $INITRAMFS_FILE
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# Prepare early loading of microcode if available
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if ls /usr/lib/firmware/intel-ucode/* >/dev/null 2>&1 ||
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ls /usr/lib/firmware/amd-ucode/* >/dev/null 2>&1; then
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# first empty WDIR to reuse it
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rm -r $WDIR/*
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DSTDIR=$WDIR/kernel/x86/microcode
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mkdir -p $DSTDIR
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if [ -d /usr/lib/firmware/amd-ucode ]; then
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cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin > $DSTDIR/AuthenticAMD.bin
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fi
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if [ -d /usr/lib/firmware/intel-ucode ]; then
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cat /usr/lib/firmware/intel-ucode/* > $DSTDIR/GenuineIntel.bin
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fi
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( cd $WDIR; find . | cpio -o -H newc --quiet ) > microcode.img
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cat microcode.img $INITRAMFS_FILE > tmpfile
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mv tmpfile $INITRAMFS_FILE
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rm microcode.img
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fi
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# Remove the temporary directories and files
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rm -rf $WDIR $unsorted
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printf "done.\n"
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