Aruna Hewapathirane Aruna-Hewapathirane

Aruna-Hewapathirane / gen-initramfs.sh

Created September 6, 2016 21:18 — forked from doraskayo/gen-initramfs.sh

	#!/bin/sh

	sudo mkinitcpio -r "$LINUX_DEV_PATH"/modules_install \
	-k "$KERNEL_RELEASE" \
	-c "$LINUX_DEV_PATH"/mkinitcpio.conf \
	-g "$LINUX_DEV_PATH"/initramfs-linux.img

Aruna-Hewapathirane / symlink-test.c

Last active August 29, 2015 14:14

symbolic link and readlink system call

man 2 readlink

Aruna-Hewapathirane / gist:0de5255e6ce83201fd89

Last active August 29, 2015 14:06

vimrc - first attempt

	set nocompatible
	set modeline
	set modelines=5
	set number
	set ruler
	set laststatus=2
	set statusline=%t "tail of the filename
	set statusline+=[%{strlen(&fenc)?&fenc:'none'}, "file encoding
	set statusline+=%{&ff}> "file format
	set statusline+=%h "help file flag

Aruna-Hewapathirane / proc-read.c

Last active August 29, 2015 14:05

how to read from an existing proc file ( specifically /proc/<pid>/status )

	// compile: gcc -Wall -o proc proc-read.c
	// citation: https://bbs.archlinux.org/viewtopic.php?id=96068

	#include <stdio.h>
	#include <stdlib.h>
	#define BUFFER_SIZE 1024

	void die(char *x){ perror(x); exit(1); };

	int main(int argc, char **argv)

Aruna-Hewapathirane / gist:98e92eac307e63b2aa73

Last active August 29, 2015 14:04

Digging into printk internals so I truly *understand* what is going on ..

	printk is defined as a function in:
	- arch/ia64/kvm/vmm.c, line 84
	- kernel/printk/printk.c, line 1677 // This is what we need for kernel module work

	1677 asmlinkage __visible int printk(const char fmt, ...) // char fmt is a member
	1678 { // of structure va_format ( shown below )
	1679 va_list args;
	1680 int r;
	1681
	1682 #ifdef CONFIG_KGDB_KDB

Aruna-Hewapathirane / printk.h

Last active August 29, 2015 14:04

Why are there *two* printk functions ?