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docs(falco-driver-loader): add some comments in falco-driver-loader

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Signed-off-by: Andrea Terzolo <andrea.terzolo@polito.it>
This commit is contained in:
Andrea Terzolo 2022-08-03 20:51:41 +00:00 committed by poiana
parent a37e2252b2
commit c81f3fc87e
1 changed files with 13 additions and 2 deletions
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15
scripts/falco-driver-loader
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@ -261,6 +261,13 @@ print_clean_termination() {
echo echo
} }
print_filename_components() {
echo " - driver name: ${DRIVER_NAME}"
echo " - target identifier: ${TARGET_ID}"
echo " - kernel release: ${KERNEL_RELEASE}"
echo " - kernel version: ${KERNEL_VERSION}"
}
clean_kernel_module() { clean_kernel_module() {
echo echo
echo "================ Cleaning phase ================" echo "================ Cleaning phase ================"
@ -349,6 +356,8 @@ load_kernel_module() {
get_target_id get_target_id
local FALCO_KERNEL_MODULE_FILENAME="${DRIVER_NAME}_${TARGET_ID}_${KERNEL_RELEASE}_${KERNEL_VERSION}.ko" local FALCO_KERNEL_MODULE_FILENAME="${DRIVER_NAME}_${TARGET_ID}_${KERNEL_RELEASE}_${KERNEL_VERSION}.ko"
echo "* Filename '${FALCO_KERNEL_MODULE_FILENAME}' is composed of:"
print_filename_components
if [ -f "${HOME}/.falco/${FALCO_KERNEL_MODULE_FILENAME}" ]; then if [ -f "${HOME}/.falco/${FALCO_KERNEL_MODULE_FILENAME}" ]; then
echo "* Found a prebuilt ${DRIVER_NAME} module at ${HOME}/.falco/${FALCO_KERNEL_MODULE_FILENAME}, loading it" echo "* Found a prebuilt ${DRIVER_NAME} module at ${HOME}/.falco/${FALCO_KERNEL_MODULE_FILENAME}, loading it"
@ -504,15 +513,17 @@ load_bpf_probe_download() {
} }
load_bpf_probe() { load_bpf_probe() {
echo "* Mounting debugfs"
if [ ! -d /sys/kernel/debug/tracing ]; then if [ ! -d /sys/kernel/debug/tracing ]; then
echo "* Mounting debugfs"
mount -t debugfs nodev /sys/kernel/debug mount -t debugfs nodev /sys/kernel/debug
fi fi
get_target_id get_target_id
BPF_PROBE_FILENAME="${DRIVER_NAME}_${TARGET_ID}_${KERNEL_RELEASE}_${KERNEL_VERSION}.o" BPF_PROBE_FILENAME="${DRIVER_NAME}_${TARGET_ID}_${KERNEL_RELEASE}_${KERNEL_VERSION}.o"
echo "* Filename '${BPF_PROBE_FILENAME}' is composed of:"
print_filename_components
if [ -n "$ENABLE_DOWNLOAD" ]; then if [ -n "$ENABLE_DOWNLOAD" ]; then
if [ -f "${HOME}/.falco/${BPF_PROBE_FILENAME}" ]; then if [ -f "${HOME}/.falco/${BPF_PROBE_FILENAME}" ]; then
@ -662,7 +673,7 @@ if [ -z "$has_opts" ]; then
fi fi
if [ -z "$source_only" ]; then if [ -z "$source_only" ]; then
echo "* Running falco-driver-loader for: falco version=${FALCO_VERSION}, driver version=${DRIVER_VERSION}" echo "* Running falco-driver-loader for: falco version=${FALCO_VERSION}, driver version=${DRIVER_VERSION}, arch=${ARCH}, kernel release=${KERNEL_RELEASE}, kernel version=${KERNEL_VERSION}"
if [ "$(id -u)" != 0 ]; then if [ "$(id -u)" != 0 ]; then
>&2 echo "This program must be run as root (or with sudo)" >&2 echo "This program must be run as root (or with sudo)"