Began work FAT32 drivers in KBOOT

2025-01-10 11:30:24 +01:00
parent 23ab5d7bfb
commit 295e3d9c18
8 changed files with 220 additions and 27 deletions
@@ -0,0 +1,33 @@
+#include "stdint.h"
+#include "string.h"
+#include "disk.h"
+#include "fat32.h"
+
+// Local context
+struct fat32_ctx ctx;
+
+int fat32_init(struct partition* p) {
+	readSectors(p->startLBA, 1, &ctx.bpb);
+	ctx.offsetBase = p->startLBA;
+
+	if (ctx.bpb.bytesPerSect != SECTOR_SIZE) return 1;
+
+	ctx.offsetFats = ctx.offsetBase + ctx.bpb.reservedSects;
+	ctx.offsetClusts = ctx.offsetFats + ctx.bpb.fatCount * ctx.bpb.sectsPerFat_32;
+
+	return 0;
+}
+
+int fat32_open(char* filename, int flags, ...) {
+	// TODO: flags
+	
+	//struct fat32_traversed res = fat32_traverse(ctx, filename);
+	//if (!res.dir) return -1;
+
+
+}
+
+void fat32_close(void* file) {}
+
+int fat32_read(const void* buf, size_t size, size_t count, void* file) {}
+