kivava

Keybase proof

I hereby claim:

• I am kivava on github.
• I am kivava (https://keybase.io/kivava) on keybase.
• I have a public key ASAqyYmuAPWRYv76BFqzAEFjI5aYsIL1aiN6q2FrNIaaNwo

To claim this, I am signing this object:

kivava

Fib sample

gcc -o fib -Og -rdynamic -finstrument-functions test_fib.c instrument.c -ldl

kivava

Generate A Deterministic RSA Key by A Specified SEED/Password

The OpenSSL cannot specify the seed by a simple CLI. The gnutls supports.

Generate a RSA 2048 bit key

certtool --generate-privkey --outfile privkey.pem --key-type=rsa --sec-param=medium -d 2 --seed=00000000000000000000000000000000000000000000000000000000

kivava

execinfo

To generate backtrace on segmentation fault, one simple way is use execinfo.h.

struct sigaction act;

memset((void *)&act, 0, sizeof(act));
act.sa_sigaction = sigv_handler;
act.sa_flags = SA_RESTART | SA_SIGINFO;

kivava

Importing Python source code from a script without the .py extension

Generally, to import a python module programatically when you know the file's path, you could do something like this:

import importlib.util
import sys

kivava

#!/usr/bin/env bash

set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

usage() {
  cat <<EOF
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

kivava

# Decompile
dtc -I dtb -O dts -o devicetree.dts /boot/dtb/<your_devicetree_file_name>.dtb

# Compile
dtc -I dts -O dtb devicetree.dts -o <your_devicetree_file_name>.dtb

# Merge with DTBO
fdtoverlay -i modified-base.dtb -o modified-full.dtb  /boot/tegra194-p3668-all-p3509-0000-user-custom.dtbo

# DTS from fs