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103 lines
3.0 KiB
103 lines
3.0 KiB
#!/bin/bash
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kernel=`uname -r`
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tmpdir=`mktemp -d`
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if [ -n "$1" ]; then
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if [ -d "/lib/modules/$1" ]; then
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kernel="$1"
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else
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echo "Can't open /lib/modules/$1: No such directory."
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echo "Usage: $0 [ kernel-version ]"
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exit 1
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fi
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fi
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echo "Creating /boot/initrdnew-${kernel}.img ..."
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mkdir -p $tmpdir/etc/conf
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grep '^modprobe ' /etc/conf/kernel | grep -v 'no-initrd' | \
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sed 's,[ ]#.*,,' | \
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while read a b ; do
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b="`find /lib/modules/$kernel -name "$b.o" -o -name "$b.ko"`"
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echo "Adding $b."
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mkdir -p $tmpdir/${b%/*}
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cp $b $tmpdir/$b
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echo "/sbin/insmod $b $c" >> $tmpdir/etc/conf/kernel
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done
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mkdir -p $tmpdir/dev $tmpdir/root $tmpdir/tmp $tmpdir/proc $tmpdir/sys
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mknod $tmpdir/dev/ram0 b 1 0
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mknod $tmpdir/dev/null c 1 3
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mknod $tmpdir/dev/zero c 1 5
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mknod $tmpdir/dev/tty c 5 0
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mknod $tmpdir/dev/console c 5 1
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# this copies a set of programs and the necessary libraries into a
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# chroot environment
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echo -n "Checking necessary fsck programs ... "
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while read dev a mnt b fs c ; do
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[ -e "/sbin/fsck.${fs}" ] && echo "/sbin/fsck.${fs} /sbin/fsck.${fs}"
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done < <( mount ) | sort | uniq >/etc/conf/initrd/initrd_fsck
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echo "/sbin/fsck /sbin/fsck" >>/etc/conf/initrd/initrd_fsck
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echo "done"
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targetdir=$tmpdir
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programs="/bin/bash /bin/bash2 /bin/sh /bin/ls /sbin/pivot_root /sbin/insmod /sbin/insmod.old /bin/mount /bin/umount /usr/bin/chroot /etc/fstab /bin/mkdir"
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libs="/lib/ld-linux.so.2"
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for x in $programs ; do
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[ -e $x ] || continue
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mkdir -p $targetdir/${x%/*}
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cp -a $x $targetdir/$x
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file $x | grep -q ELF || continue
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libs="$libs `ldd $x 2>/dev/null | grep -v 'not a dynamic executable' | sed -e 's,^[\t ]*,,g' | cut -f 3 -d' '`"
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done
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for x in /etc/conf/initrd/initrd_* ; do
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[ -f $x ] || continue
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while read file target ; do
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if [ -d $file ] ; then
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find $file -type f | while read f ; do
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tfile=${targetdir}/${target}/${f#$file}
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[ -e $tfile ] && continue
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mkdir -p ${tfile%/*}
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cp $f $tfile
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libs="$libs `ldd $f 2>/dev/null | grep -v 'not a dynamic executable' | sed -e 's,^[\t ]*,,g' | cut -f 3 -d' '`"
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done
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fi
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[ -f $file ] || continue
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mkdir -p $targetdir/${target%/*}
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cp $file $targetdir/$target
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file $file | grep -q ELF || continue
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libs="$libs `ldd $file 2>/dev/null | grep -v 'not a dynamic executable' | sed -e 's,^[\t ]*,,g' | cut -f 3 -d' '`"
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done < $x
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done
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while [ -n "$libs" ] ; do
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oldlibs=$libs
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libs=""
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for x in $oldlibs ; do
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mkdir -p $targetdir/${x%/*}
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cp $x $targetdir/$x
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file $x | grep -q ELF || continue
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for y in `ldd $x 2>/dev/null | grep -v 'not a dynamic executable' | sed -e 's,^[\t ]*,,g' | cut -f 3 -d' '` ; do
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[ ! -e "$targetdir/$y" ] && libs="$libs $y"
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done
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done
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done
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itmp=`mktemp`
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dd if=/dev/zero of=${itmp} count=8192 bs=1024 > /dev/null 2>&1
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mke2fs -m 0 -N 5120 -F ${itmp} > /dev/null 2>&1
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mntpoint="`mktemp -d`"
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mount -o loop ${itmp} $mntpoint
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rmdir $mntpoint/lost+found/
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cp -a $tmpdir/* $mntpoint/
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umount -d $mntpoint
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rmdir $mntpoint
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gzip -9 < ${itmp} > /boot/initrdnew-${kernel}.img
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rm -f ${itmp}
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rm -rf $tmpdir
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echo "Done."
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