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Fixed various bugs

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This commit is contained in:
Marco Cetica 2021-02-05 18:11:59 +01:00
parent f263f3f481
commit e430178c82
2 changed files with 8 additions and 63 deletions
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55
fs_generator.c
View File

@ -1,55 +0,0 @@
/* This program comes from James Molloy tutorial
* on how to create an UNIX clone You can find the original code at:
* http://www.jamesmolloy.co.uk/tutorial_html/8.-The%20VFS%20and%20the%20initrd.html */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct initrd_header {
unsigned char magic; // Magic number for consistency
char name[64];
unsigned int offset; // Offset of the file start
unsigned int length;
};
int main(int argc, char **argv) {
int heads = (argc - 1) / 2;
struct initrd_header headers[64];
printf("Size of header(in bytes): %ld\n", sizeof(struct initrd_header));
unsigned int off = sizeof(struct initrd_header) * 64 + sizeof(int);
for(int i = 0; i < heads; i++) {
printf("Writing file %s->%s at 0x%d\n", argv[i*2+1], argv[i*2+2], off);
strcpy(headers[i].name, argv[i*2+2]);
headers[i].offset = off;
FILE *stream = fopen(argv[i*2+1], "r");
if(stream == 0) {
puts("Error, file not found!");
return 1;
}
fseek(stream, 0, SEEK_END);
headers[i].length = ftell(stream);
off += headers[i].length;
fclose(stream);
headers[i].magic = 0xBF;
}
FILE *wstream = fopen("./initrd.img", "w");
unsigned char *data = (unsigned char*)malloc(off);
fwrite(&heads, sizeof(int), 1, wstream);
fwrite(&heads, sizeof(struct initrd_header), 64, wstream);
for(int i = 0; i < heads; i++) {
FILE *stream = fopen(argv[i*2+1], "r");
unsigned char *buf = (unsigned char*)malloc(headers[i].length);
fread(buf, 1, headers[i].length, stream);
fread(buf, 1, headers[i].length, wstream);
fclose(stream);
free(buf);
}
fclose(wstream);
free(data);
return 0;
}

16
kernel/drivers/initrd.c
View File

@ -21,7 +21,7 @@ fs_node_t *init_ramdisk(uint32_t multiboot_location) {
file_headers = (initrd_file_header_t*)(multiboot_location+sizeof(initrd_header_t));
// Initialize root directory
initrd_root = (fs_node_t*)kmalloc(sizeof(fs_node_t));
strcpy(initrd_root->name, "initrd");
strcpy(initrd_root->name, (uint8_t*)"initrd");
initrd_root->mask = initrd_root->uid = initrd_root->gid = initrd_root->inode = initrd_root->length = 0;
initrd_root->flags = FS_DIRECTORY;
initrd_root->read = 0;
@ -29,13 +29,13 @@ fs_node_t *init_ramdisk(uint32_t multiboot_location) {
initrd_root->open = 0;
initrd_root->close = 0;
initrd_root->readdir = &initrd_readdir;
initrd_root->finddir = &initrd_finddir;
initrd_root->finddir = (finddir_type_t)&initrd_finddir;
initrd_root->ptr = 0;
initrd_root->impl = 0;
// Initialize the /dev/ directory
initrd_dev = (fs_node_t*)kmalloc(sizeof(fs_node_t));
strcpy(initrd_root->name, "dev");
strcpy(initrd_root->name, (uint8_t*)"dev");
initrd_root->mask = initrd_root->uid = initrd_root->gid = initrd_root->inode = initrd_root->length = 0;
initrd_root->flags = FS_DIRECTORY;
initrd_root->read = 0;
@ -43,7 +43,7 @@ fs_node_t *init_ramdisk(uint32_t multiboot_location) {
initrd_root->open = 0;
initrd_root->close = 0;
initrd_root->readdir = &initrd_readdir;
initrd_root->finddir = &initrd_finddir;
initrd_root->finddir = (finddir_type_t)&initrd_finddir;
initrd_root->ptr = 0;
initrd_root->impl = 0;
@ -55,7 +55,7 @@ fs_node_t *init_ramdisk(uint32_t multiboot_location) {
for(uint32_t i = 0; i < initrd_header->nfiles; i++) {
file_headers[i].offset += multiboot_location;
// Create an inode for the file
strcpy(root_nodes[i].name, &file_headers[i].name);
strcpy(root_nodes[i].name, (uint8_t*)&file_headers[i].name);
root_nodes[i].mask = root_nodes[i].uid = root_nodes[i].gid = 0;
root_nodes[i].length = file_headers[i].length;
root_nodes[i].inode = i;
@ -84,13 +84,13 @@ static uint32_t initrd_read(fs_node_t *node, uint32_t offset, uint32_t size, uin
static struct dirent *initrd_readdir(fs_node_t *node, uint32_t index) {
if(node == initrd_root && index == 0) {
strcpy(dirent.name, "dev");
strcpy(dirent.name, (uint8_t*)"dev");
dirent.name[3] = 0; // Add null terminator to the string
dirent.ino = 0;
return &dirent;
}
if(index-1 >= &root_nodes)
if(index-1 >= (uint32_t)&root_nodes)
return 0;
strcpy(dirent.name, root_nodes[index-1].name);
dirent.name[strlen(root_nodes[index-1].name)] = 0; // Add null terminator
@ -99,7 +99,7 @@ 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) {
if(node == initrd_root && !strcmp(name, "dev"))
if(node == initrd_root && !strcmp(name, (uint8_t*)"dev"))
return initrd_dev;
for(uint32_t i = 0; i < nroot_nodes; i++)