pretty_printk_dump.c

/*
 * pretty-printk::Variadic dumping
 * <https://github.com/tpiekarski/pretty-printk>
 * ---
 * Copyright 2020 Thomas Piekarski <t.piekarski@deloquencia.de>
 *
 * This file is part of pretty-printk - a pretty way to print to 
 * the Linux Kernel Ring Buffer
 * 
 * pretty-printk is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * 
 * pretty-printk is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with pretty-printk. If not, see <https://www.gnu.org/licenses/>.
 * 
 */

#include "pretty_printk.h"
#include <linux/kernel.h>
#include <linux/module.h>

MODULE_LICENSE("GPL");

void pp_dump(char *types, ...)
{
#ifdef PP_DEBUG
	va_list args;
	va_start(args, types);
	int c = 0;

	printk(KERN_DEBUG "%s: Dumping data\n", THIS_MODULE->name);

	while (*types != '\0') {
		if (*types == 'i') {
			int value = va_arg(args, int);
			printk(KERN_DEBUG "\t%d. %d\n", ++c, value);
		} else if (*types == 'c') {
			int value = va_arg(args, int);
			printk(KERN_DEBUG "\t%d. %c\n", ++c, value);
		} else if (*types == 's') {
			char *value = va_arg(args, char *);
			printk(KERN_DEBUG "\t%d. %s\n", ++c, value);
		} else {
			printk(KERN_DEBUG "\t%d. NULL (unsupported)\n", ++c);
		}

		types++;
	}

	va_end(args);
#else
// nothing to dump
#endif
}