vulcanos/kernel/drivers/initrd.h

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2021-01-02 17:49:15 +01:00
/**************************************
* VulcanOS Kernel *
* Developed by Marco 'icebit' Cetica *
* (c) 2019-2021 *
* Released under GPLv3 *
* https://github.com/ice-bit/iceOS *
***************************************/
#ifndef INITRD_H
#define INITRD_H
/* Ramdisk is a file system that is loaded along with the kernel
* and it usually contains configuration files or file system drivers.
* It is used BEFORE partitions are being mounted*/
#include <stdint.h>
#include "../libc/string.h"
#include "fs.h"
typedef struct {
uint32_t nfiles; // Number of files in the ramdisk
} initrd_header_t;
typedef struct {
uint8_t magic; // Magic number for error checking
int8_t name[64]; // Filename
uint32_t offset;
uint32_t length; // Length of the file
} initrd_file_header_t;
// Function to initialize initrd, we'll pass the multiboot
// module as parameter
fs_node_t *init_ramdisk(uint32_t multiboot_location);
static uint32_t initrd_read(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
static struct dirent *initrd_readdir(fs_node_t *node, uint32_t index);
static fs_node_t *initrd_finddir(fs_node_t *node, uint8_t *name);
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#endif