update_emu_kernels.sh: script to automate kernel upgrade
Download kernel images from build server and generate commit.
Change-Id: I5148cc432e101dd1a9ee11b1cec414a6ba40364c
diff --git a/update_emu_kernels.sh b/update_emu_kernels.sh
new file mode 100755
index 0000000..5facc7e
--- /dev/null
+++ b/update_emu_kernels.sh
@@ -0,0 +1,98 @@
+#!/bin/bash
+set -e
+
+if [ $# == 2 ] && [ $1 == '-m' ]
+then
+ manual_mode=true
+elif [ $# != 1 ]
+then
+ echo Usage: $0 [-m]
+ echo " -m: manually specify build numbers"
+ exit 1
+fi
+
+fetchtool='sso_client --location --request_timeout 60 --url'
+build_server='https://android-build-uber.corp.google.com'
+branch_prefix='kernel-n-dev-android-goldfish-'
+
+# kernel_img[branch]="build_server_output local_file_name"
+declare -A kernel_img
+
+kernel_img[3.4-arm]="zImage arm/kernel-qemu-armv7"
+kernel_img[3.4-mips]="vmlinux mips/kernel-qemu"
+kernel_img[3.4-x86]="bzImage x86/kernel-qemu"
+# arm ranchu emulator not ready
+# kernel_img[3.10-arm]="Image arm/ranchu/kernel-qemu"
+kernel_img[3.10-arm64]="Image arm64/kernel-qemu"
+kernel_img[3.10-mips]="vmlinux mips/ranchu/kernel-qemu"
+kernel_img[3.10-mips64]="vmlinux mips64/kernel-qemu"
+kernel_img[3.10-x86]="bzImage x86/ranchu/kernel-qemu"
+kernel_img[3.10-x86_64]="bzImage x86_64/ranchu/kernel-qemu"
+kernel_img[3.10-x86_64-qemu1]="bzImage x86_64/kernel-qemu"
+
+printf "Upgrade emulator kernels\n\n" > emu_kernel.commitmsg
+
+for key in "${!kernel_img[@]}"
+do
+ branch=$branch_prefix$key
+ branch_url=$build_server/builds/$branch-linux-kernel
+
+ # Find the latest build by searching for highest build number since
+ # build server doesn't provide the "latest" link.
+ build=`$fetchtool $branch_url | \
+ sed -rn "s/<li><a href=".*">([0-9]+)<\/a><\/li>/\1/p" | \
+ sort -nr | head -n 1`
+
+ if $manual_mode
+ then
+ read -p "Enter build number for $branch: [$build]" input
+ build="${input:-$build}"
+ fi
+
+ echo Fetching build $build from branch $branch
+
+ # file_info[0] - kernel image on build server
+ # file_info[1] - kernel image in local tree
+ file_info=(${kernel_img[$key]})
+
+ $fetchtool $branch_url/$build/${file_info[0]} > ${file_info[1]}
+
+ git add ${file_info[1]}
+
+ printf "$branch - build: $build\n" >> emu_kernel.commitmsg
+done
+
+last_3_4_commit=`git log | \
+ sed -rn "s/.*Upgrade 3.4 kernel images to ([a-z0-9]+).*/\1/p" | \
+ head -n 1`
+
+last_3_10_commit=`git log | \
+ sed -rn "s/.*Upgrade 3.10 kernel images to ([a-z0-9]+).*/\1/p" | \
+ head -n 1`
+
+if [ ! -d goldfish_cache ]
+then
+ mkdir goldfish_cache
+ git clone https://android.googlesource.com/kernel/goldfish goldfish_cache
+fi
+
+pushd goldfish_cache
+
+git fetch origin
+
+git checkout remotes/origin/android-goldfish-3.4
+tot_3_4_commit=`git log --oneline -1 | cut -d' ' -f1`
+printf "\nUpgrade 3.4 kernel images to ${tot_3_4_commit}\n" >> ../emu_kernel.commitmsg
+git log --oneline HEAD...${last_3_4_commit} >> ../emu_kernel.commitmsg
+
+git checkout remotes/origin/android-goldfish-3.10
+tot_3_10_commit=`git log --oneline -1 | cut -d' ' -f1`
+printf "\nUpgrade 3.10 kernel images to ${tot_3_10_commit}\n" >> ../emu_kernel.commitmsg
+git log --oneline HEAD...${last_3_10_commit} >> ../emu_kernel.commitmsg
+
+popd
+
+git commit -t emu_kernel.commitmsg
+
+rm emu_kernel.commitmsg
+