iaGuoZhi / virt_to_phys_user.c

Created July 10, 2022 08:02 — forked from a9QrX3Lu/virt_to_phys_user.c

Convert virtual address to physical address in user space

	#define _XOPEN_SOURCE 700
	#include <fcntl.h> /* open */
	#include <stdint.h> /* uint64_t */
	#include <stdio.h> /* printf */
	#include <stdlib.h> /* size_t */
	#include <unistd.h> /* pread, sysconf */

	typedef struct {
	uint64_t pfn : 55;
	unsigned int soft_dirty : 1;

iaGuoZhi / install_xelatex_on_mac.txt

Created April 21, 2022 14:07 — forked from peterhurford/install_xelatex_on_mac.txt

How to install latex and xelatex on Mac so that Jupyter "Download as PDF" will work

	brew install pandoc
	brew tap homebrew/cask
	brew install --cask basictex
	eval "$(/usr/libexec/path_helper)"
	# Update $PATH to include `/usr/local/texlive/2020basic/bin/x86_64-darwin`
	sudo tlmgr update --self
	sudo tlmgr install texliveonfly
	sudo tlmgr install xelatex
	sudo tlmgr install adjustbox
	sudo tlmgr install tcolorbox

iaGuoZhi / helloproc.c

Created April 17, 2022 08:52 — forked from BrotherJing/helloproc.c

write a kernel module, which create a read/write proc file

	#include<linux/module.h>
	#include<linux/init.h>
	#include<linux/proc_fs.h>
	#include<linux/sched.h>
	#include<linux/uaccess.h>
	#include<linux/fs.h>
	#include<linux/seq_file.h>
	#include<linux/slab.h>

	static char *str = NULL;

iaGuoZhi / .clang-format

Created April 6, 2022 10:20 — forked from elmarco/.clang-format

qemu .clang-format

	# https://clang.llvm.org/docs/ClangFormat.html
	# https://clang.llvm.org/docs/ClangFormatStyleOptions.html
	---
	Language: Cpp
	AlignAfterOpenBracket: Align
	AlignConsecutiveAssignments: false # although we like it, it creates churn
	AlignConsecutiveDeclarations: false
	AlignEscapedNewlinesLeft: true
	AlignOperands: true
	AlignTrailingComments: false # churn

iaGuoZhi / gist:435cfa0de9780dee4a4e13313ae00473

Created March 4, 2022 06:44 — forked from jwebcat/gist:5122366

Properly download from github using wget and curl

	wget --no-check-certificate --content-disposition https://github.com/joyent/node/tarball/v0.7.1
	# --no-check-cerftificate was necessary for me to have wget not puke about https
	curl -LJO https://github.com/joyent/node/tarball/v0.7.1

iaGuoZhi / pthread-example.c

Last active January 5, 2022 13:41 — forked from rnavagamuwa/pthread-example.c

	#include <stdio.h>
	#include <pthread.h>
	#include <string.h>
	#include <sys/syscall.h>
	#include <sys/types.h>
	#include <assert.h>
	#include <sys/time.h>

	#define LOOPS 100000

iaGuoZhi / IOMMU support in Linux kernel.md

Created November 16, 2021 06:10 — forked from abelardojarab/IOMMU support in Linux kernel.md

Verifying IOMMU support in Linux kernel

Basic stuff

ACPI enumerates and lists the different DMA engines in the platform, and device scope relationships between PCI devices and which DMA engine controls them.

How is IOVA generated?

iaGuoZhi / jd.py

Created October 3, 2021 12:53 — forked from a9QrX3Lu/jd.py

Auto buying script for jd

	#!/usr/bin/python3
	#coding:utf-8
	import time
	from selenium import webdriver
	# enter username and password below
	jd_up={"ue":"*","pd":"*"}

	chrome=webdriver.Chrome()
	chrome.get(url="https://passport.jd.com/new/login.aspx?")
	chrome.find_element_by_xpath("//*[@id=\"content\"]/div/div[1]/div/div[3]/a").click()

iaGuoZhi / commands.md

Last active October 29, 2021 06:50 — forked from stdrc/commands.md

常用命令

常用小命令

Linux 用户相关

sudo 免密码：

su - # 进入 root shell
visudo
# 添加 user-name ALL=(ALL) NOPASSWD:ALL

iaGuoZhi / setup-sjtu-vpn.sh

Last active September 25, 2021 13:17 — forked from yuq-1s/setup-sjtu-vpn.sh

Setup SJTU VPN connection from Ubuntu 18.04 desktop

	# Install dependencies
	sudo apt install libcurl4-openssl-dev libip4tc-dev libiptc-dev autoconf libgmp3-dev libssl-dev pkg-config

	# Install StrongSwan
	wget http://download.strongswan.org/strongswan-5.6.1.tar.bz2
	tar xjvf strongswan-5.6.1.tar.bz2 && cd strongswan-5.6.1

	# FIXME: Some of these options may be redundant, but they work on my laptop.
	autoconf && ./configure \
	--prefix=/usr/local \