65 lines
1.7 KiB
Bash
Executable File
65 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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# arch_post_update_update_boot.sh
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#
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# In your /etc/profile, export the following variables
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# LVM_VG_BOOT=vg0
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# LVM_LG_BOOT_NAME=boot
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# BOOT_DIR_SUFFIX=/archlinux
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#
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# Optional variables:
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# PACMAN_BIN=/usr/bin/pacman # Alternative pacman binary (eg: aura)
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# BOOT_SYMLINK=current (in good boot dir)
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set -e
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source /etc/profile
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ask_overwrite() {
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echo "Existing destination folder ($ARCH_BOOT_DST_CURRENT_VERSION), do you want to overwrite? (y/n)";
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read OVERWRITE;
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test "$OVERWRITE" = "y" && return
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echo "Do not overwrite. Exitting gently..."
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exit 0;
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}
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PACMAN_BIN=${PACMAN_BIN:-/usr/bin/pacman}
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BOOT_SYMLINK=${BOOT_SYMLINK:-current}
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CURRENT_VERSION=`${PACMAN_BIN} -Qi linux \
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| sed -n '/^Version *:/p' \
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| grep -o '[^ ]*$'`
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BOOT_BLK=/dev/$LVM_VG_BOOT/$LVM_LG_BOOT_NAME
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BOOT_ORIG=/boot
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TMP_BOOT_DST=`mktemp -d`
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ARCH_BOOT_DST=$TMP_BOOT_DST/$BOOT_DIR_SUFFIX
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ARCH_BOOT_DST_CURRENT_VERSION=$ARCH_BOOT_DST/$CURRENT_VERSION
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ARCH_INITRAMFS=initramfs-linux.img
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ARCH_INITRAMFS_FALLBACK=initramfs-linux-fallback.img
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ARCH_VMLINUZ=vmlinuz-linux
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mount $BOOT_BLK $TMP_BOOT_DST;
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test -d $ARCH_BOOT_DST_CURRENT_VERSION \
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&& test `realpath $ARCH_BOOT_DST/$BOOT_SYMLINK` = $ARCH_BOOT_DST_CURRENT_VERSION \
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&& echo "Linux version already up to date ($CURRENT_VERSION)" && exit 0;
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mkdir $ARCH_BOOT_DST_CURRENT_VERSION || ask_overwrite;
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(
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cd $BOOT_ORIG;
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# Copy the new kernel files to the real destination in boot fs
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cp -t $ARCH_BOOT_DST_CURRENT_VERSION $ARCH_INITRAMFS $ARCH_INITRAMFS_FALLBACK $ARCH_VMLINUZ;
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)
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(
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cd $ARCH_BOOT_DST;
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# Re-link the good version
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test -f $BOOT_SYMLINK && rm $BOOT_SYMLINK;
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ln -s $CURRENT_VERSION current;
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)
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echo "Linux version updated to $CURRENT_VERSION"
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umount $TMP_BOOT_DST;
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exit 0;
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