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patch-fbc.sh
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patch-fbc.sh
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#!/bin/bash
# halt on any error for safety and proper pipe handling
set -euo pipefail ; # <- this semicolon and comment make options apply
# even when script is corrupt by CRLF line terminators (issue #75)
# empty line must follow this comment for immediate fail with CRLF newlines
backup_path="/opt/nvidia/libnvidia-fbc-backup"
silent_flag=''
print_usage() { printf '
SYNOPSIS
patch-fbc.sh [-s] [-r|-h|-c VERSION|-l]
DESCRIPTION
The patch for Nvidia drivers to allow FBC on consumer devices
-s Silent mode (No output)
-r Rollback to original (Restore lib from backup)
-h Print this help message
-c VERSION Check if version VERSION supported by this patch.
Returns true exit code (0) if version is supported.
-l List supported driver versions
'
}
# shellcheck disable=SC2209
opmode="patch"
while getopts 'rshc:l' flag; do
case "${flag}" in
r) opmode="${opmode}rollback" ;;
s) silent_flag='true' ;;
h) opmode="${opmode}help" ;;
c) opmode="${opmode}checkversion" ; checked_version="$OPTARG" ;;
l) opmode="${opmode}listversions" ;;
*) echo "Incorrect option specified in command line" ; exit 2 ;;
esac
done
if [[ $silent_flag ]]; then
exec 1> /dev/null
fi
declare -A patch_list=(
["435.27.08"]='s/\x85\xc0\x89\xc3\x0f\x85\x68\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\x68\xfa\xff\xff/'
["440.26"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.31"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.33.01"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.36"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.43.01"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.44"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.48.02"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.58.01"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.58.02"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.59"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.64"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.64.00"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.02"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.03"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.04"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.08"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.09"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.11"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.12"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.14"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.66.15"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
["440.82"]='s/\x85\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/\x31\xc0\x89\xc3\x0f\x85\xa9\xfa\xff\xff/'
)
declare -A object_list=(
["435.27.08"]='libnvidia-fbc.so'
["440.26"]='libnvidia-fbc.so'
["440.31"]='libnvidia-fbc.so'
["440.33.01"]='libnvidia-fbc.so'
["440.36"]='libnvidia-fbc.so'
["440.43.01"]='libnvidia-fbc.so'
["440.44"]='libnvidia-fbc.so'
["440.48.02"]='libnvidia-fbc.so'
["440.58.01"]='libnvidia-fbc.so'
["440.58.02"]='libnvidia-fbc.so'
["440.59"]='libnvidia-fbc.so'
["440.64"]='libnvidia-fbc.so'
["440.64.00"]='libnvidia-fbc.so'
["440.66.02"]='libnvidia-fbc.so'
["440.66.03"]='libnvidia-fbc.so'
["440.66.04"]='libnvidia-fbc.so'
["440.66.08"]='libnvidia-fbc.so'
["440.66.09"]='libnvidia-fbc.so'
["440.66.11"]='libnvidia-fbc.so'
["440.66.12"]='libnvidia-fbc.so'
["440.66.14"]='libnvidia-fbc.so'
["440.66.15"]='libnvidia-fbc.so'
["440.82"]='libnvidia-fbc.so'
)
check_version_supported () {
local ver="$1"
[[ "${patch_list[$ver]+isset}" && "${object_list[$ver]+isset}" ]]
}
get_supported_versions () {
for drv in "${!patch_list[@]}"; do
[[ "${object_list[$drv]+isset}" ]] && echo "$drv"
done | sort -t. -n
return 0
}
patch_common () {
NVIDIA_SMI="$(command -v nvidia-smi || true)"
if [[ ! "$NVIDIA_SMI" ]] ; then
echo 'nvidia-smi utility not found. Probably driver is not installed.'
exit 1
fi
cmd="$NVIDIA_SMI --query-gpu=driver_version --format=csv,noheader,nounits"
driver_versions_list=$($cmd)
ret_code=$?
driver_version=$(echo "$driver_versions_list" | head -n 1)
if [[ $ret_code -ne 0 ]] ; then
echo "Can not detect nvidia driver version."
echo "CMD: \"$cmd\""
echo "Result: \"$driver_versions_list\""
echo "nvidia-smi retcode: $ret_code"
exit 1
fi
echo "Detected nvidia driver version: $driver_version"
if ! check_version_supported "$driver_version" ; then
echo "Patch for this ($driver_version) nvidia driver not found."
echo "Patch is available for versions: "
get_supported_versions
exit 1
fi
patch="${patch_list[$driver_version]}"
object="${object_list[$driver_version]}"
declare -a driver_locations=(
'/usr/lib/x86_64-linux-gnu'
'/usr/lib/x86_64-linux-gnu/nvidia/current/'
'/usr/lib64'
"/usr/lib/nvidia-${driver_version%%.*}"
)
dir_found=''
for driver_dir in "${driver_locations[@]}" ; do
if [[ -e "$driver_dir/$object.$driver_version" ]]; then
dir_found='true'
break
fi
done
[[ "$dir_found" ]] || { echo "ERROR: cannot detect driver directory"; exit 1; }
}
rollback () {
patch_common
if [[ -f "$backup_path/$object.$driver_version" ]]; then
cp -p "$backup_path/$object.$driver_version" \
"$driver_dir/$object.$driver_version"
echo "Restore from backup $object.$driver_version"
else
echo "Backup not found. Try to patch first."
exit 1
fi
}
patch () {
patch_common
if [[ -f "$backup_path/$object.$driver_version" ]]; then
bkp_hash="$(sha1sum "$backup_path/$object.$driver_version" | cut -f1 -d\ )"
drv_hash="$(sha1sum "$driver_dir/$object.$driver_version" | cut -f1 -d\ )"
if [[ "$bkp_hash" != "$drv_hash" ]] ; then
echo "Backup exists and driver file differ from backup. Skipping patch."
return 0
fi
else
echo "Attention! Backup not found. Copying current $object to backup."
mkdir -p "$backup_path"
cp -p "$driver_dir/$object.$driver_version" \
"$backup_path/$object.$driver_version"
fi
sha1sum "$backup_path/$object.$driver_version"
sed "$patch" "$backup_path/$object.$driver_version" > \
"${PATCH_OUTPUT_DIR-$driver_dir}/$object.$driver_version"
sha1sum "${PATCH_OUTPUT_DIR-$driver_dir}/$object.$driver_version"
ldconfig
echo "Patched!"
}
query_version_support () {
if check_version_supported "$checked_version" ; then
echo "SUPPORTED"
exit 0
else
echo "NOT SUPPORTED"
exit 1
fi
}
list_supported_versions () {
get_supported_versions
}
case "${opmode}" in
patch) patch ;;
patchrollback) rollback ;;
patchhelp) print_usage ; exit 2 ;;
patchcheckversion) query_version_support ;;
patchlistversions) list_supported_versions ;;
*) echo "Incorrect combination of flags. Use option -h to get help."
exit 2 ;;
esac