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Commited some old changes, idk what they were

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Tom-on
2024-07-30 21:07:05 +02:00
parent 8e004221e1
commit 105076a8ce
14 changed files with 238 additions and 222 deletions
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include/fs/fs.h
+6 -7
View File
@@ -27,11 +27,11 @@ typedef struct {
typedef struct {
uint32_t inodeCount;
uint16_t firstInodeBitmapBlock;
uint16_t firstINodeBitmapBlock;
uint16_t firstDataBitmapBlock;
uint16_t inodeBitmapBlockCount;
uint16_t dataBitmapBlockCount;
uint32_t firstInodeBlock;
uint32_t firstINodeBlock;
uint32_t firstDataBlock;
uint16_t inodeBlockCount;
uint16_t dataBlockCount;
@@ -40,14 +40,14 @@ typedef struct {
uint16_t blockSize; // in bytes
uint8_t inodeSize; // in bytes
uint32_t rootInodePtr;
uint32_t rootINodePtr;
uint8_t inodesPerBlock;
uint8_t directExtentsPerInode;
uint8_t directExtentsPerINode;
uint16_t extentsPerIndirectBlock;
uint32_t firstFreeInodeBit;
uint32_t firstFreeINodeBit;
uint32_t firstFreeDataBit;
uint16_t deviceNumber;
uint8_t firstUnreservedInode;
uint8_t firstUnreservedINode;
uint8_t reserved[14];
} __attribute__ ((packed)) superBlock_t;
@@ -87,5 +87,4 @@ uint32_t bytesToSectors(uint32_t bytes) {
if (bytes <= FS_SECTOR_SIZE) return 1;
return (bytes / FS_SECTOR_SIZE) + ((bytes % FS_SECTOR_SIZE) > 0 ? 1 : 0);
}
#endif
include/fs/impl.h
+52
View File
@@ -0,0 +1,52 @@
#ifndef IMPL_H
#define IMPL_H
#include <disk/disk.h>
#include <fs/fs.h>
#include <memory/addresses.h>
#include <stdint.h>
#include <string.h>
char* currentDir;
inode_t currentDirINode;
char tempSector[FS_SECTOR_SIZE];
char tempBlock[FS_BLOCK_SIZE];
inode_t rootINode;
inode_t* getINode(char* path) {
dirEntry_t* dirEntry = (dirEntry_t*)SCRATCH_BLOCK_LOC;
while (dirEntry->name[0] != '\0') {
if (strcmp(dirEntry->name, path) == 0) break;
dirEntry++;
}
if (dirEntry->name[0] == '\0') return NULL;
inode_t* inode = (inode_t*)BOOT_FIRST_INODE_LOC;
while (inode->id != dirEntry->id) {
inode++;
}
return inode;
}
uint8_t loadFile(inode_t* inode, void* dest) {
uint32_t totalBlocks = bytesToBlocks(inode->sizeBytes);
uint32_t addressOffset = 0;
for (uint8_t i = 0; i < 4 && totalBlocks > 0; i++) {
diskRead(inode->extent[i].firstBlock * 8, inode->extent[i].length * 8, dest + addressOffset);
addressOffset += inode->extent[i].length * FS_BLOCK_SIZE;
totalBlocks -= inode->extent[i].length;
}
if (totalBlocks > 0) {
// TODO: Indirect extents
}
return 0;
}
#endif