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268 lines
8.6 KiB
268 lines
8.6 KiB
#Break execution on any error received
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function require_package {
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package_name=$1
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printf "\e[32mPackage required %s: \e[0m" "${package_name}"
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#Supress error code and message in case the package is not installed
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exec 3>&2
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exec 2>/dev/null
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set +e
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installed=$(dpkg-query -W -f='${Status}' ${package_name} | grep -c "ok installed" || true)
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exec 2>&3
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set -e
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if [ $installed -eq 0 ];
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then
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echo -e "\e[31m - not found, installing now...\e[0m"
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sudo apt-get install ${package_name} -y
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echo -e "\e[32mMissing package installed\e[0m"
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else
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echo -e "\e[32m - found\e[0m"
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fi
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}
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#Based on the current kernel version select the branch name to fetch the kernel source code
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# The reference name are pulled here : http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/
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# As of Jun 19
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# Branch Commit message Author Age
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# hwe UBUNTU: Ubuntu-hwe-4.15.0-24.26~16.04.1 Andy Whitcroft 6 days
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# hwe-edge UBUNTU: Ubuntu-hwe-4.15.0-23.25~16.04.1 Kleber Sacilotto de Souza 4 weeks
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# hwe-zesty UBUNTU: Ubuntu-hwe-4.10.0-43.47~16.04.1 Thadeu Lima de Souza Cascardo 6 months
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# master UBUNTU: Ubuntu-4.4.0-128.154 Stefan Bader 4 weeks
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# master-next UBUNTU: SAUCE: Redpine: fix soft-ap invisible issue Sanjay Kumar Konduri 2 days
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# As of Jun 21, 2020
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#Ubuntu bionic repo : http://kernel.ubuntu.com/git/ubuntu/ubuntu-bionic.git/
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# hwe UBUNTU: Ubuntu-hwe-5.3.0-56.50~18.04.1 Kleber Sacilotto de Souza 3 weeks
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# hwe-5.0 UBUNTU: Ubuntu-hwe-5.0-5.0.0-53.57~18.04.1 Sultan Alsawaf 7 days
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# hwe-5.4 UBUNTU: Ubuntu-hwe-5.4-5.4.0-38.42~18.04.1 Stefan Bader 4 days
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# hwe-edge UBUNTU: Ubuntu-hwe-edge-5.3.0-24.26~18.04.2 Kleber Sacilotto de Souza 7 months
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# master UBUNTU: Ubuntu-4.15.0-106.107 Kleber Sacilotto de Souza 2 weeks
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# master-current UBUNTU: Ubuntu-4.15.0-66.75 Khalid Elmously 4 months
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#Ubuntu focal repo : https://kernel.ubuntu.com/git/ubuntu/ubuntu-focal.git/
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# Branch Commit message
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# master UBUNTU: Ubuntu-5.4.0-21.25
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function choose_kernel_branch {
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# Split the kernel version string
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IFS='.' read -a kernel_version <<< "$1"
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if [ "$2" == "xenial" ];
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then
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case "${kernel_version[1]}" in
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"4") # Kernel 4.4. is managed on master branch
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echo master
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;;
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"8") # kernel 4.8 is deprecated and available via explicit tags. Currently on 4.8.0-58
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echo Ubuntu-hwe-4.8.0-58.63_16.04.1
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;;
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"10") # kernel 4.10 is managed on branch hwe-zesty as of 1.1.2018
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echo hwe-zesty
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;;
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"13") # kernel 4.13 is on hwe branch and replaced with 4.15. Provide source from a tagged version instead (back-compat)
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echo Ubuntu-hwe-4.13.0-45.50_16.04.1
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;;
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"15") # kernel 4.15 for Ubuntu xenial is either hwe or hwe-edge
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echo hwe
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;;
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*)
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#error message shall be redirected to stderr to be printed properly
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echo -e "\e[31mUnsupported kernel version $1 . The patches are maintained for Ubuntu16 (Xenial) with LTS kernel versions 4.4, 4.8, 4.10, 4.13 and 4.15\e[0m" >&2
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exit 1
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;;
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esac
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elif [ "$2" == "bionic" ];
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then
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case "${kernel_version[0]}.${kernel_version[1]}" in
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"4.15") # kernel 4.15 for Ubuntu 18/Bionic Beaver
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echo master
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;;
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"4.18") # kernel 4.18 for Ubuntu 18/Bionic Beaver
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echo Ubuntu-hwe-4.18.0-25.26_18.04.1
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;;
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"5.0") # kernel 5.0 for Ubuntu 18/Bionic Beaver
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echo 5
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;;
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"5.3") # kernel 5.3
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#echo Ubuntu-hwe-5.3.0-64.58_18.04.1
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echo 5
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;;
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"5.4") # kernel 5.4
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echo hwe-5.4
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;;
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*)
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#error message shall be redirected to stderr to be printed properly
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echo -e "\e[31mUnsupported kernel version $1 . The Bionic patches are maintained for Bionic Beaver LTS kernels 4.1[5/8], 5.[0/3/4]\e[0m" >&2
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exit 1
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;;
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esac
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elif [ "$2" == "focal" ]; # Ubuntu 20
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then
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case "${kernel_version[0]}.${kernel_version[1]}" in
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"5.4") # kernel 5.4
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echo master
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;;
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"5.8") # kernel 5.8
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echo hwe-5.8
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;;
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"5.11") # kernel 5.11
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echo hwe-5.11
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;;
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"5.13")
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echo hwe-5.13
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;;
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"5.15")
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echo hwe-5.15
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;;
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*)
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#error message shall be redirected to stderr to be printed properly
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echo -e "\e[31mUnsupported kernel version $1 . The Focal patches are maintained for Ubuntu LTS with kernel 5.4, 5.8, 5.11 only\e[0m" >&2
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exit 1
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;;
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esac
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elif [ "$2" == "jammy" ]; # Ubuntu 22
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then
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case "${kernel_version[0]}.${kernel_version[1]}" in
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"5.15")
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echo hwe-5.15
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;;
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"5.19")
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echo hwe-5.19
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;;
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"6.2")
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echo hwe-6.2
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;;
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"6.5")
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echo hwe-6.5
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;;
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*)
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#error message shall be redirected to stderr to be printed properly
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echo -e "\e[31mUnsupported kernel version $1 . The Jammy patches are maintained for Ubuntu LTS with kernel 5.15, 5.19 only\e[0m" >&2
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exit 1
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;;
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esac
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else
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echo -e "\e[31mUnsupported distribution $2, kernel version $1 . The patches are maintained for Ubuntu 16/18/20 LTS\e[0m" >&2
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exit 1
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fi
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}
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function try_unload_module {
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unload_module_name=$1
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op_failed=0
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sudo modprobe -r ${unload_module_name} || op_failed=$?
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if [ $op_failed -ne 0 ];
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then
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echo -e "\e[31mFailed to unload module $unload_module_name. error type $op_failed . Operation is aborted\e[0m" >&2
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exit 1
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fi
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}
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function try_load_module {
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load_module_name=$1
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op_failed=0
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if [ $(lsmod | grep ^${load_module_name} | wc -l) -eq 0 ]; then
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sudo modprobe ${load_module_name} || op_failed=$?
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else
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printf "\e[32mn/a\e[0m"
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fi
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if [ $op_failed -ne 0 ];
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then
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echo -e "\e[31mFailed to reload module $load_module_name. error type $op_failed . Operation is aborted\e[0m" >&2
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exit 1
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fi
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}
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function try_module_insert {
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module_name=$1
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src_ko=$2
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tgt_ko=$3
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backup_available=1
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dependent_modules=""
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printf "\e[32mReplacing \e[93m\e[1m%s \e[32m -\n\e[0m" ${module_name}
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#Check if the module is loaded, and if does - are there dependent kernel modules.
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#Unload those first, then unload the requsted module and proceed with replacement
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# lsmod | grep ^videodev
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#videodev 176128 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2
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# In the above scenario videodev cannot be unloaded untill all the modules listed on the right are unloaded
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# Note that in case of multiple dependencies we'll remove only modules one by one starting with the first on the list
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# And that the modules stack unwinding will start from the last (i.e leaf) dependency,
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# for instance : videobuf2_core,videobuf2_v4l2,uvcvideo will start with unloading uvcvideo as it should automatically unwind dependent modules
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if [ $(lsmod | grep ^${module_name} | wc -l) -ne 0 ];
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then
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dependencies=$(lsmod | grep ^${module_name} | awk '{printf $4}')
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dependent_module=$(lsmod | grep ^${module_name} | awk '{printf $4}' | awk -F, '{printf $NF}')
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if [ ! -z "$dependencies" ];
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then
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printf "\e[32m\tModule \e[93m\e[1m%s \e[32m\e[21m is used by \e[34m$dependencies\n\e[0m" ${module_name}
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fi
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while [ ! -z "$dependent_module" ]
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do
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printf "\e[32m\tUnloading dependency \e[34m$dependent_module\e[0m\n\t"
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dependent_modules+="$dependent_module "
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try_unload_module $dependent_module
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dependent_module=$(lsmod | grep ^${module_name} | awk '{printf $4}' | awk -F, '{printf $NF}')
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done
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# Unload existing modules if resident
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printf "\e[32mModule is resident, unloading ... \e[0m"
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try_unload_module ${module_name}
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printf "\e[32m succeeded. \e[0m\n"
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fi
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# backup the existing module (if available) for recovery
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if [ -f ${tgt_ko} ];
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then
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sudo cp ${tgt_ko} ${tgt_ko}.bckup
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else
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backup_available=0
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fi
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# copy the patched module to target location
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sudo cp ${src_ko} ${tgt_ko}
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# try to load the new module
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modprobe_failed=0
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printf "\e[32m\tApplying the patched module ... \e[0m"
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sudo modprobe ${module_name} || modprobe_failed=$?
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# Check and revert the backup module if 'modprobe' operation crashed
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if [ $modprobe_failed -ne 0 ];
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then
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echo -e "\e[31mFailed to insert the patched module. Operation is aborted, the original module is restored\e[0m"
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echo -e "\e[31mVerify that the current kernel version is aligned to the patched module version\e[0m"
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if [ ${backup_available} -ne 0 ];
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then
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sudo cp ${tgt_ko}.bckup ${tgt_ko}
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sudo modprobe ${module_name}
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printf "\e[34mThe original \e[33m %s \e[34m module was reloaded\n\e[0m" ${module_name}
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fi
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exit 1
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else
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# Everything went OK, delete backup
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printf "\e[32m succeeded\e[0m"
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sudo rm ${tgt_ko}.bckup
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fi
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# Reload all dependent modules recursively
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if [ ! -z "$dependent_modules" ];
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then
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#Retrieve the list of dependent modules that were unloaded
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modules_list=(${dependent_modules})
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for (( idx=${#modules_list[@]}-1 ; idx>=0 ; idx-- ));
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do
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printf "\e[32m\tReloading dependent kernel module \e[34m${modules_list[idx]} \e[32m... \e[0m"
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try_load_module ${modules_list[idx]}
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printf "\e[32m succeeded. \e[0m\n"
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done
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fi
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printf "\n"
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}
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