syscalls: implement basic execve syscall, no argc, argv, envp support yet

src/fs/vfs.c

@@ -189,4 +189,36 @@ void test_iso9660()
         printf("Total bytes read: ");
         printf("0x%X\n", total_bytes);
     }
+}
+
+int vsf_read_file_by_path(const char* path, uint8_t** buffer, l9660_dir* dir)
+{
+    l9660_file* file = (l9660_file*)malloc(sizeof(l9660_file));
+
+    l9660_status err;
+
+    err = l9660_openat(file, dir, path);
+    if (err != L9660_OK)
+    {
+        debug_log("read_file: err: 0x%X\n", err);
+        return err;
+    }
+
+    debug_log("HEHE %s\n", path);
+
+    l9660_seek(file, L9660_SEEK_END, 0);
+    uint32_t file_size = l9660_tell(file);
+    debug_log("file_size: %X\n", file_size);
+    l9660_seek(file, L9660_SEEK_SET, 0);
+
+    *buffer = (uint8_t*)malloc(file_size);
+    debug_log("eeee\n");
+
+    size_t read;
+
+    read = vfs_read_file(file, *buffer);
+    free(file);
+    debug_log("bytes read: 0x%X\n", read);
+    
+    return 0;
 }