98 lines
2.6 KiB
Bash
Executable File
98 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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# Create initramfs image
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# Author: Tomas M <http://www.linux-live.org/>
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#
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. ../.config
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INITRAMFS=/tmp/$LIVEKITNAME-initramfs-$$
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# copy file to initramfs tree, including
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# all library dependencies (as shown by ldd)
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# $1 = file to copy (full path)
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copy_including_deps()
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{
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# if source doesn't exist or target exists, do nothing
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if [ ! -e "$1" -o -e "$INITRAMFS"/"$1" ]; then
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return
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fi
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cp -R --parents "$1" "$INITRAMFS"
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if [ -L "$1" ]; then
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DIR="$(dirname "$1")"
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LNK="$(readlink "$1")"
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copy_including_deps "$(cd "$DIR"; realpath -s "$LNK")"
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fi
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ldd "$1" 2>/dev/null | sed -r "s/.*=>|[(].*//g" | sed -r "s/^\\s+|\\s+\$//" \
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| while read LIB; do
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copy_including_deps "$LIB"
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done
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shift
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if [ "$1" != "" ]; then
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copy_including_deps "$@"
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fi
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}
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rm -Rf $INITRAMFS
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mkdir -p $INITRAMFS/{bin,dev,etc,lib,lib64,mnt,proc,root,run,sbin,sys,tmp,usr,var/log}
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cd static
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./update
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cd ..
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cp static/{busybox,mount.*} $INITRAMFS/bin
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chmod a+x $INITRAMFS/bin/{busybox,mount.*}
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$INITRAMFS/bin/busybox | grep , | grep -v Copyright | tr "," " " | while read LINE; do
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for TOOL in $LINE; do
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ln -s busybox $INITRAMFS/bin/$TOOL
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ln -s ../bin/busybox $INITRAMFS/sbin/$TOOL
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done
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done
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rm $INITRAMFS/{s,}bin/init
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mknod $INITRAMFS/dev/console c 5 1
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mknod $INITRAMFS/dev/null c 1 3
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mknod $INITRAMFS/dev/ram0 b 1 0
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mknod $INITRAMFS/dev/tty1 c 4 1
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mknod $INITRAMFS/dev/tty2 c 4 2
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mknod $INITRAMFS/dev/tty3 c 4 3
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mknod $INITRAMFS/dev/tty4 c 4 4
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#copy_including_deps /usr/bin/strace
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#copy_including_deps /usr/bin/lsof
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# TODO: add all comon filesystems which are NOT compiled in kernel already
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copy_including_deps /$LMK/kernel/fs/squashfs
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copy_including_deps /$LMK/kernel/drivers/staging/zram
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copy_including_deps /$LMK/kernel/drivers/block/loop.*
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copy_including_deps /$LMK/kernel/fs/fuse
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copy_including_deps /$LMK/modules.*
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depmod -b $INITRAMFS
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# trim modules.order file. Perhaps we could remove it entirely
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MODULEORDER="$(cd "$INITRAMFS/$LMK/"; find -name "*.ko" | sed -r "s:^./::g" | tr "\n" "|" | sed -r "s:[.]:.:g")"
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cat $INITRAMFS/$LMK/modules.order | grep -E "$MODULEORDER"/foo/bar > $INITRAMFS/$LMK/_
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mv $INITRAMFS/$LMK/_ $INITRAMFS/$LMK/modules.order
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echo "root::0:0::/root:/bin/bash" >$INITRAMFS/etc/passwd
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touch $INITRAMFS/etc/{m,fs}tab
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cp init $INITRAMFS
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chmod a+x $INITRAMFS/init
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cp cleanup $INITRAMFS/lib
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chmod a+x $INITRAMFS/lib/cleanup
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ln -s ../init $INITRAMFS/bin/init
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ln -s ../init $INITRAMFS/sbin/init
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cp ../livekitlib $INITRAMFS/lib/
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cp ../.config $INITRAMFS/lib/
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cd $INITRAMFS
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find . -print | cpio -o -H newc 2>/dev/null | xz -f --extreme --check=crc32 >$INITRAMFS.img
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echo $INITRAMFS.img
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cd ..
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rm -Rf $INITRAMFS
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