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/**
* @file initrd.h
* Initrd image support
* An archive file (made with ar) can be linked into the final executable to
* allow files to be loaded in memory on boot. See mkinitrd.sh or the Makefile
* for more info.
*
* Copyright (C) 2018 Clyne Sullivan
*
* 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 <https://www.gnu.org/licenses/>.
*/
#ifndef INITRD_H_
#define INITRD_H_
#include <stdint.h>
/**
* Confirms the initrd image is loaded and valid.
* @return non-zero if valid image found
*/
uint8_t initrd_validate(void);
/**
* Gets the file name of the index'th file in the archive.
* @param index the index of the file
* @return the file's name, or zero if not found
*/
char *initrd_getfile(uint32_t index);
/**
* Gets contents of the given file.
* @param name the file's name
* @return pointer to file data, null if not found
*/
char *initrd_readfile(const char *name);
/**
* Gets the size of the given file.
* @param name the file's name
* @return the file's size, in bytes
*/
uint32_t initrd_filesize(const char *name);
#endif // INITRD_H_
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