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/*
* Copyright (c) 2017 Richard Braun.
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Kernel command line argument parsing.
*
* Arguments are separated by spaces (there is no escape character).
* They can be of the form "name" when used as boolean values (present
* or not), or "name=value".
*/
#ifndef KERN_ARG_H
#define KERN_ARG_H
#include <stdbool.h>
#include <kern/init.h>
#define ARG_CMDLINE_MAX_SIZE 256
/*
* Set the command line string.
*
* This function must be called before calling the kernel main entry point.
*/
void arg_set_cmdline(const char *cmdline);
/*
* Log command line information.
*/
void arg_log_info(void);
/*
* Return true if an argument with the given name is present in the
* command line.
*/
bool arg_present(const char *name);
/*
* Return the value of the argument with the given name in the command
* line.
*
* If the argument form is "name", the empty string is returned. If the
* argument isn't present, NULL is returned.
*/
const char * arg_value(const char *name);
/*
* This init operation provides :
* - command line arguments can be retrieved
*/
INIT_OP_DECLARE(arg_setup);
#endif /* KERN_ARG_H */
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