Made Open() syscall work (badly)

include/c/stdio.h

@@ -7,36 +7,42 @@
 #include <stdint.h>
 
 // Nobody should have to interface with the internals of this structure
-typedef struct _iobuf { // 16B
-    char* _ptr; // Virtual address of file base
-    int _offset; // Offset into file; Seek()
-    int _file; // File descriptor
-    int _oflag; // Flags used to open file
+typedef struct _iobuf { // 24B
+    unsigned char*  _ptr; // File buffer base
+    unsigned int    _size; // Size of buffer
+    int             _offset; // Offset into file
+    unsigned short  _flag; // Open flags
+    int             _file; // File descriptor
+    
+    char            __reserved[6];
 } FILE;
 
 FILE* stdin;
 FILE* stdout;
 FILE* stderr;
 
+/* Declarations */
+int printf(const char*, ...);
+
 /* --- file I/O --- */
 FILE* fopen(const char* filename, const char* mode) {
-    FILE* stream = malloc(sizeof(FILE));
-    
     int oflag = O_RDWR | O_CREAT | O_BIN; // TODO!
 
     int fd = open(filename, oflag);
+    if (fd < 0) { 
+        printf(""); // TODO: i'd prefer if i didn't need this
+        return NULL; 
+    }
+   
+    // TODO: Somehow get the open file table
+    FILE* fp = malloc(sizeof(FILE));
+    fp->_file = fd;
 
-    stream->_ptr = NULL; // Idk
-    stream->_file = fd;
-    stream->_oflag = oflag;
-
-    return stream;
+    return fp;
 }
 
 int fclose(FILE* stream) {
     int res = close(stream->_file);
-    free(stream);
-
     return res;
 }
 
@@ -148,7 +154,7 @@ int printf(const char* fmt, ...) {
                 case '%': // Just print '%'
                     buffer[len++] = c;
                     break;
-            }
+            }  
             state = 0;
         }
     }