refining vfs

2026-07-10 07:46:46 -05:00
parent 4d98d73f5e
commit 032a35206a
13 changed files with 304 additions and 277 deletions
--- a/compile_commands.json
+++ b/compile_commands.json
@@ -26,12 +26,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/vfs.c.o",
-      "kernel/vfs.c"
+      "obj/kernel/kbd.c.o",
+      "kernel/kbd.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/vfs.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/vfs.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/kbd.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/kbd.c.o"
  },
  {
    "arguments": [
@@ -43,12 +43,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/kmain.c.o",
-      "kernel/kmain.c"
+      "obj/kernel/gdt.c.o",
+      "kernel/gdt.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/kmain.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/kmain.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/gdt.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/gdt.c.o"
  },
  {
    "arguments": [
@@ -67,74 +67,6 @@
    "file": "/home/slinky/source/RockOS/kernel/drivers/pic/pic.c",
    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pic/pic.c.o"
  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/drivers/cpio/cpio.c.o",
-      "kernel/drivers/cpio/cpio.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/drivers/cpio/cpio.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/cpio/cpio.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/drivers/pty/pty.c.o",
-      "kernel/drivers/pty/pty.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/drivers/pty/pty.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pty/pty.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/drivers/vga/vga.c.o",
-      "kernel/drivers/vga/vga.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/drivers/vga/vga.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/vga/vga.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/drivers/ide/ide.c.o",
-      "kernel/drivers/ide/ide.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/drivers/ide/ide.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/ide/ide.c.o"
-  },
  {
    "arguments": [
      "/home/slinky/opt/cross/bin/i686-elf-gcc",
@@ -179,12 +111,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/gdt.c.o",
-      "kernel/gdt.c"
+      "obj/kernel/drivers/ide/ide.c.o",
+      "kernel/drivers/ide/ide.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/gdt.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/gdt.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/drivers/ide/ide.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/ide/ide.c.o"
  },
  {
    "arguments": [
@@ -196,12 +128,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/memory/mm.c.o",
-      "kernel/memory/mm.c"
+      "obj/kernel/drivers/vga/vga.c.o",
+      "kernel/drivers/vga/vga.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/memory/mm.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/memory/mm.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/drivers/vga/vga.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/vga/vga.c.o"
  },
  {
    "arguments": [
@@ -213,12 +145,63 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/kbd.c.o",
-      "kernel/kbd.c"
+      "obj/kernel/drivers/cpio/cpio.c.o",
+      "kernel/drivers/cpio/cpio.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/kbd.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/kbd.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/drivers/cpio/cpio.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/cpio/cpio.c.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/drivers/pty/pty.c.o",
+      "kernel/drivers/pty/pty.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/drivers/pty/pty.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pty/pty.c.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/scheduler.c.o",
+      "kernel/scheduler.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/scheduler.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/scheduler.c.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/elf.c.o",
+      "kernel/elf.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/elf.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/elf.c.o"
  },
  {
    "arguments": [
@@ -254,23 +237,6 @@
    "file": "/home/slinky/source/RockOS/kernel/interrupts.c",
    "output": "/home/slinky/source/RockOS/obj/kernel/interrupts.c.o"
  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/elf.c.o",
-      "kernel/elf.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/elf.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/elf.c.o"
-  },
  {
    "arguments": [
      "/home/slinky/opt/cross/bin/i686-elf-gcc",
@@ -298,63 +264,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/lib/stream.c.o",
-      "kernel/lib/stream.c"
+      "obj/kernel/kmain.c.o",
+      "kernel/kmain.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/lib/stream.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/lib/stream.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/lib/memory.c.o",
-      "kernel/lib/memory.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/lib/memory.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/lib/memory.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/lib/print.c.o",
-      "kernel/lib/print.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/lib/print.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/lib/print.c.o"
-  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/lib/ringbuf.c.o",
-      "kernel/lib/ringbuf.c"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/lib/ringbuf.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/lib/ringbuf.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/kmain.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/kmain.c.o"
  },
  {
    "arguments": [
@@ -373,6 +288,40 @@
    "file": "/home/slinky/source/RockOS/kernel/lib/tasks.c",
    "output": "/home/slinky/source/RockOS/obj/kernel/lib/tasks.c.o"
  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/lib/ringbuf.c.o",
+      "kernel/lib/ringbuf.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/lib/ringbuf.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/lib/ringbuf.c.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/lib/stream.c.o",
+      "kernel/lib/stream.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/lib/stream.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/lib/stream.c.o"
+  },
  {
    "arguments": [
      "/home/slinky/opt/cross/bin/i686-elf-gcc",
@@ -400,12 +349,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/scheduler.c.o",
-      "kernel/scheduler.c"
+      "obj/kernel/lib/print.c.o",
+      "kernel/lib/print.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/scheduler.c",
-    "output": "/home/slinky/source/RockOS/obj/kernel/scheduler.c.o"
+    "file": "/home/slinky/source/RockOS/kernel/lib/print.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/lib/print.c.o"
  },
  {
    "arguments": [
@@ -417,12 +366,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/syscall.S.o",
-      "kernel/syscall.S"
+      "obj/kernel/lib/memory.c.o",
+      "kernel/lib/memory.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/syscall.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/syscall.S.o"
+    "file": "/home/slinky/source/RockOS/kernel/lib/memory.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/lib/memory.c.o"
  },
  {
    "arguments": [
@@ -434,12 +383,29 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/common.S.o",
-      "kernel/common.S"
+      "obj/kernel/vfs.c.o",
+      "kernel/vfs.c"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/common.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/common.S.o"
+    "file": "/home/slinky/source/RockOS/kernel/vfs.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/vfs.c.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/memory/mm.c.o",
+      "kernel/memory/mm.c"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/memory/mm.c",
+    "output": "/home/slinky/source/RockOS/obj/kernel/memory/mm.c.o"
  },
  {
    "arguments": [
@@ -458,23 +424,6 @@
    "file": "/home/slinky/source/RockOS/kernel/drivers/pic/pic.S",
    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pic/pic.S.o"
  },
-  {
-    "arguments": [
-      "/home/slinky/opt/cross/bin/i686-elf-gcc",
-      "-c",
-      "-ffreestanding",
-      "-O2",
-      "-Wall",
-      "-Wextra",
-      "-Ikernel",
-      "-o",
-      "obj/kernel/drivers/pit/pit.S.o",
-      "kernel/drivers/pit/pit.S"
-    ],
-    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/drivers/pit/pit.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pit/pit.S.o"
-  },
  {
    "arguments": [
      "/home/slinky/opt/cross/bin/i686-elf-gcc",
@@ -502,12 +451,46 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/memory/mm.S.o",
-      "kernel/memory/mm.S"
+      "obj/kernel/drivers/pit/pit.S.o",
+      "kernel/drivers/pit/pit.S"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/memory/mm.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/memory/mm.S.o"
+    "file": "/home/slinky/source/RockOS/kernel/drivers/pit/pit.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/drivers/pit/pit.S.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/syscall.S.o",
+      "kernel/syscall.S"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/syscall.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/syscall.S.o"
+  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/interrupts.S.o",
+      "kernel/interrupts.S"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/interrupts.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/interrupts.S.o"
  },
  {
    "arguments": [
@@ -526,6 +509,23 @@
    "file": "/home/slinky/source/RockOS/kernel/boot/boot.S",
    "output": "/home/slinky/source/RockOS/obj/kernel/boot/boot.S.o"
  },
+  {
+    "arguments": [
+      "/home/slinky/opt/cross/bin/i686-elf-gcc",
+      "-c",
+      "-ffreestanding",
+      "-O2",
+      "-Wall",
+      "-Wextra",
+      "-Ikernel",
+      "-o",
+      "obj/kernel/common.S.o",
+      "kernel/common.S"
+    ],
+    "directory": "/home/slinky/source/RockOS",
+    "file": "/home/slinky/source/RockOS/kernel/common.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/common.S.o"
+  },
  {
    "arguments": [
      "/home/slinky/opt/cross/bin/i686-elf-gcc",
@@ -553,12 +553,12 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/gdt.S.o",
-      "kernel/gdt.S"
+      "obj/kernel/memory/mm.S.o",
+      "kernel/memory/mm.S"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/gdt.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/gdt.S.o"
+    "file": "/home/slinky/source/RockOS/kernel/memory/mm.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/memory/mm.S.o"
  },
  {
    "arguments": [
@@ -570,11 +570,11 @@
      "-Wextra",
      "-Ikernel",
      "-o",
-      "obj/kernel/interrupts.S.o",
-      "kernel/interrupts.S"
+      "obj/kernel/gdt.S.o",
+      "kernel/gdt.S"
    ],
    "directory": "/home/slinky/source/RockOS",
-    "file": "/home/slinky/source/RockOS/kernel/interrupts.S",
-    "output": "/home/slinky/source/RockOS/obj/kernel/interrupts.S.o"
+    "file": "/home/slinky/source/RockOS/kernel/gdt.S",
+    "output": "/home/slinky/source/RockOS/obj/kernel/gdt.S.o"
  }
 ]
--- a/kernel/drivers/vga/vga.c
+++ b/kernel/drivers/vga/vga.c
@@ -3,6 +3,8 @@

 #include <lib/stream.h>

+#include "vga.h"
+
 #define VGA_WIDTH   80
 #define VGA_HEIGHT  25
 #define VGA_MEMORY  (0xB8000 + 0xC0000000)
--- a/kernel/drivers/vga/vga.h
+++ b/kernel/drivers/vga/vga.h
@@ -1,7 +1,11 @@
 #ifndef DVGA_H
 #define DVGA_H

+#include <vfs.h>
+
 void vga_init();
 void vga_putchar(char c);

+uint32_t vga_write(vfs_node_t* node, uint32_t offset, uint32_t size, uint8_t* buf);
+
 #endif
--- a/kernel/elf.c
+++ b/kernel/elf.c
@@ -5,7 +5,7 @@
 #include <lib/memory.h>

 uint32_t load_elf_program(const char* prgm) {
-    int fd = open(prgm, 0);
+    int fd = vfs_open(prgm, 0);
    if (fd == -1) {
        return -1;
    }
@@ -13,7 +13,7 @@ uint32_t load_elf_program(const char* prgm) {
    elf_header_t* e_hdr = kalloc(sizeof(elf_header_t));
    memset((void*)e_hdr, 0, sizeof(elf_header_t));

-    uint32_t bytes_rd = read(fd, e_hdr, sizeof(elf_header_t));
+    uint32_t bytes_rd = vfs_read(fd, e_hdr, sizeof(elf_header_t));
    if (bytes_rd <= 0) {
        return -1;
    }
@@ -23,9 +23,9 @@ uint32_t load_elf_program(const char* prgm) {
    uint32_t heap_start = 0;

    for (uint32_t i = 0; i < e_hdr->e_phnum; i++) {
-        fseek(fd, ph_table_ptr);
+        vfs_seek(fd, ph_table_ptr);
        memset((void*)ph, 0, sizeof(elf_program_header_t));
-        read(fd, ph, sizeof(elf_program_header_t));
+        vfs_read(fd, ph, sizeof(elf_program_header_t));

        if (ph->p_type == PT_LOAD) {
            uint32_t vstart = ph->p_vaddr;
@@ -44,8 +44,8 @@ uint32_t load_elf_program(const char* prgm) {
            }

            uint32_t data_ptr = ph->p_offset;
-            fseek(fd, data_ptr);
-            read(fd, (void*)vstart, ph->p_filesz);
+            vfs_seek(fd, data_ptr);
+            vfs_read(fd, (void*)vstart, ph->p_filesz);

            // 0 out bss
            if (ph->p_memsz > ph->p_filesz) {
--- a/kernel/kmain.c
+++ b/kernel/kmain.c
@@ -119,7 +119,7 @@ void kmain(uint32_t magic, multiboot_info* mbi)  {
    kprintf("failed to load initrd\n");
  }

-  mount(vfs_root, initrd_root);
+  vfs_mount(vfs_root, initrd_root);
  kprintf("initrd read, mounted @ /\n");

  disable_interrupts();
--- a/kernel/lib/memory.c
+++ b/kernel/lib/memory.c
@@ -15,7 +15,7 @@ void memcpy(const void* src, void* dst, size_t sz) {
    }
 }

-void memset(const uint8_t* dst, uint8_t val, size_t sz) {
+void memset(uint8_t* dst, uint8_t val, size_t sz) {
    for (size_t i = 0; i < sz; i++) {
        ((uint8_t*)dst)[i] = val;
    }
--- a/kernel/lib/memory.h
+++ b/kernel/lib/memory.h
@@ -5,7 +5,7 @@
 #include <stddef.h>

 void memcpy(const void* src, void* dst, size_t sz);
-void memset(const uint8_t* dst, uint8_t val, size_t sz);
+void memset(uint8_t* dst, uint8_t val, size_t sz);

 int strcmp(const char *s1, const char *s2);
 int strncmp(const char *s1, const char *s2, size_t n);
--- a/kernel/lib/string.h
+++ b/kernel/lib/string.h
@@ -1,6 +1,6 @@
 #ifndef KSTRING_H
 #define KSTRING_H

-char* strtok_r(char* str, const char* delim, char** saveptr);
+char* strtok_r(char *s, const char *delim, char **saveptr);

 #endif
--- a/kernel/lib/strtok.c
+++ b/kernel/lib/strtok.c
@@ -2,48 +2,63 @@

 #include <stddef.h>

-static int is_delim(char c, const char* delim) {
-    while (*delim) {
-        if (c == *delim) {
-            return 1;
+char* strtok_r(char *s, const char *delim, char **saveptr) {
+    char *token;
+
+    if (!saveptr) {
+        return NULL;
+    }
+
+    if (!s) {
+        s = *saveptr;
+    }
+
+    if (!s || *s == '\0') {
+        *saveptr = s;
+        return NULL;
+    }
+
+    while (*s != '\0') {
+        const char *d = delim;
+        int is_delim = 0;
+        while (*d != '\0') {
+            if (*s == *d) {
+                is_delim = 1;
+                break;
+            }
+            d++;
        }
-        delim++;
-    }
-    return 0;
-}
-
-char* strtok_r(char* str, const char* delim, char** saveptr) {
-    if (saveptr == NULL) {
-        return NULL;
-    }
-
-    char* next_token = (str != NULL) ? str : *saveptr;
-
-    if (next_token == NULL || *next_token == '\0') {
-        *saveptr = NULL;
-        return NULL;
-    }
-
-    while (*next_token && is_delim(*next_token, delim)) {
-        next_token++;
-    }
-
-    if (*next_token == '\0') {
-        *saveptr = next_token;
-        return NULL;
-    }
-
-    char* token_start = next_token;
-
-    while (*next_token) {
-        if (is_delim(*next_token, delim)) {
-            *next_token = '\0';        // Destructively null-terminate the token
-            *saveptr = next_token + 1; // Save the position right after the null-terminator
-            return token_start;
+        if (!is_delim) {
+            break;
        }
-        next_token++;
+        s++;
    }

-    *saveptr = next_token;
-    return token_start;
+    if (*s == '\0') {
+        *saveptr = s;
+        return NULL;
+    }
+
+    token = s;
+
+    while (*s != '\0') {
+        const char *d = delim;
+        int is_delim = 0;
+        while (*d != '\0') {
+            if (*s == *d) {
+                is_delim = 1;
+                break;
+            }
+            d++;
+        }
+        if (is_delim) {
+            *s = '\0';
+            *saveptr = s + 1;
+            return token;
+        }
+        s++;
+    }
+
+    *saveptr = s;
+    return token;
 }
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -56,7 +56,7 @@ static int32_t sys_read(int fd, void* buf, size_t count) {
 }

 static int32_t sys_open(const char* filename, int flags) {
-    return open(filename, flags);
+    return vfs_open(filename, flags);
 }

 static int32_t sys_close(int fd) {
--- a/kernel/vfs.c
+++ b/kernel/vfs.c
@@ -3,6 +3,8 @@
 #include <scheduler.h>

 #include <lib/memory.h>
+#include <lib/string.h>
+#include <lib/print.h>

 vfs_node_t* root = NULL;

@@ -19,19 +21,30 @@ vfs_node_t* vfs_create_root() {
    return root;
 }

-void mount(vfs_node_t* _mnt, vfs_node_t* _fs) {
+void vfs_mount(vfs_node_t* _mnt, vfs_node_t* _fs) {
    if (!_fs || !_mnt || !(_mnt->flags & VFS_DIRECTORY)) return;
    _mnt->mnt = _fs;
 }

-static vfs_node_t* lookup(const char* path) {
+vfs_node_t* vfs_find(const char* path) {
    if (path[0] != '/') return NULL;
    vfs_node_t* current = root;

-    if (current->mnt) {
-        current = current->mnt;
+    char* sav;
+
+    size_t path_sz = strlen(path) + 1;
+    char* path_cpy = kalloc(path_sz);
+    memset((uint8_t*)path_cpy, 0, path_sz);
+    memcpy(path, path_cpy, path_sz);
+
+    char* tkn = strtok_r(path_cpy, "/", &sav);
+
+    while (tkn != NULL) {
+        kprintf("Found tkn: %s\n");
    }
    
+    kfree(path_cpy);
+
    const char* cmp = path + 1;
    if (*cmp == '\0') return current;

@@ -42,8 +55,12 @@ static vfs_node_t* lookup(const char* path) {
    return NULL;
 }

-int open(const char* _path, int flags) {
-    vfs_node_t* file = lookup(_path);
+vfs_node_t* vfs_mkdir(vfs_node_t* parent, const char* name) {
+    vfs_node_t* node = kalloc(sizeof(vfs_node_t));
+}
+
+int vfs_open(const char* _path, int flags) {
+    vfs_node_t* file = vfs_find(_path);
    if (!file) return -1;

    file_t* f = (file_t*)kalloc(sizeof(file_t));
@@ -54,7 +71,7 @@ int open(const char* _path, int flags) {
    return alloc_fd(f);
 }

-int read(int fd, void* buf, size_t sz) {
+int vfs_read(int fd, void* buf, size_t sz) {
    process_t* curr_p = current_task();
    if (fd < 0 || fd >= MAX_PROCESS_FDS || !curr_p->fd_table[fd]->node) {
        return -1;
@@ -70,18 +87,7 @@ int read(int fd, void* buf, size_t sz) {
    return bytes_read;
 }

-int fstat(int fd, file_t* dst) {
-    process_t* curr_p = current_task();
-    if (fd < 0 || fd >= MAX_PROCESS_FDS || !curr_p->fd_table[fd]->node) {
-        return 0;
-    }
-
-    file_t* src = curr_p->fd_table[fd];
-    memcpy(src, dst, sizeof(file_t));
-    return 1;
-}
-
-int fseek(int fd, size_t offset) {
+int vfs_seek(int fd, size_t offset) {
    process_t* curr_p = current_task();
    if (fd < 0 || fd >= MAX_PROCESS_FDS || !curr_p->fd_table[fd]->node) {
        return 0;
--- a/kernel/vfs.h
+++ b/kernel/vfs.h
@@ -36,13 +36,13 @@ typedef struct {
 } file_t;

 vfs_node_t* vfs_create_root();
+vfs_node_t* vfs_mkdir(vfs_node_t* parent, const char* name);

-void mount(vfs_node_t* _mnt, vfs_node_t* _fs);
-int open(const char* path, int flags);
-int read(int fd, void* buf, size_t sz);
+void vfs_mount(vfs_node_t* _mnt, vfs_node_t* _fs);
+int vfs_open(const char* path, int flags);
+int vfs_read(int fd, void* buf, size_t sz);

-int fstat(int fd, file_t* _f);
-int fseek(int fd, size_t offset);
+int vfs_seek(int fd, size_t offset);

 int alloc_fd(file_t* f);

--- a/programs/lib/rlibc.a
+++ b/programs/lib/rlibc.a