/*
 * linux/kernel/avm_printk.c
 *
 * Copyright (c) 2017 AVM
 */

#include <linux/printk.h>
#include <linux/module.h>

#ifdef CONFIG_PRINTK

int force_printk_avm;

static bool no_avm_printk = false;
core_param(no_avm_printk, no_avm_printk, bool, 0644);

asmlinkage int printk_linux(const char *fmt, ...)
{
	va_list args;
	int r;

	va_start(args, fmt);
	r = vprintk_emit(FORCE_PRINTK_LINUX_FACILITIES_VALUE, -1, NULL, 0, fmt,
			 args);
	va_end(args);

	return r;
}
EXPORT_SYMBOL(printk_linux);

/**
 * printk_avm_console_bend -- set Linux or avm console print functionality
 * @activate: 0: Linux default printk, 1: AVM bended
 *
 * Returns previous mode
 */
int printk_avm_console_bend(unsigned int activate)
{
	int ret = 0;

	if (IS_ENABLED(CONFIG_AVM_ENHANCED)) {
		ret = force_printk_avm;
		if (activate && no_avm_printk)
			pr_notice_once("AVM printk disabled by cmdline (no_avm_printk)\n");
		else
			force_printk_avm = activate ? 1 : 0;
	}

	return ret;
}
EXPORT_SYMBOL(printk_avm_console_bend);

#else

static int no_vprintk(const char *fmt, va_list args)
{
	return 0;
}

asmlinkage int (*vprintk)(const char *fmt, va_list args) = no_vprintk;

int printk_avm_console_bend(unsigned int activate)
{
	return 0;
}

#endif /* CONFIG_PRINTK */

/* vim: set ts=8 sw=8 noet cino=>8\:0l1(0: */