Completed FAT12 structures, added some for VFS.

[BOS.git] / kernel / vfs / vfs.asm

diff --git a/kernel/vfs/vfs.asm b/kernel/vfs/vfs.asm
index 3742be6f50c6df6af7f37af9d4f05b9410f3c15c..30d5590c39e0f5c6f6593c9d2a8d4674ce44db6f 100644 (file)
--- a/kernel/vfs/vfs.asm
+++ b/kernel/vfs/vfs.asm
@@ -6,6 +6,13 @@
 ;                                                          ;
 ;----------------------------------------------------------;
 
 ;                                                          ;
 ;----------------------------------------------------------;
 

+
+    ; file handles need to be dword, where the high
+    ; word contains drive number, and the low word
+    ; is the drive/FS specific handle. limits FS to
+    ; a max of 65535 opened files. should be alright. ;)
+
+

     ;---------------------------------------------;
     ;   VFS main structure                        ;
     ;---------------------------------------------;
     ;---------------------------------------------;
     ;   VFS main structure                        ;
     ;---------------------------------------------;


@@ -16,6 +23,8 @@
             times 255 * sizeof.VFS_storage     db 0   ; storage driver structure
         .filesystem:          
             times 255 * sizeof.VFS_filesystem  db 0   ; filesystem driver structure
             times 255 * sizeof.VFS_storage     db 0   ; storage driver structure
         .filesystem:          
             times 255 * sizeof.VFS_filesystem  db 0   ; filesystem driver structure

+        .mounted                               db 0   ; 1/0 switch if mounted
+        .current_path:          times 255      db 0   ; drive opened path (increase max path size?)

     }
 
     virtual at 0                                      ; could use "at esi" instead
     }
 
     virtual at 0                                      ; could use "at esi" instead


@@ -68,16 +77,17 @@
         sizeof.VFS_filesystem = $-$$
     end virtual
 
         sizeof.VFS_filesystem = $-$$
     end virtual
 

-
+    ;---------------------------------------------;
+    ;   VFS structure pointer                     ;
+    ;---------------------------------------------;

     VFS_structure             dd 0
 
     VFS_structure             dd 0
 

+

 ;--------------------------------------------------------------;
 ;   init_vfs  -  detect connected drives                       ;
 ;--------------------------------------------------------------;
 ;                                                              ;
 ;--------------------------------------------------------------;
 ;   init_vfs  -  detect connected drives                       ;
 ;--------------------------------------------------------------;
 ;                                                              ;

-;       in:  reg = pointer to VFS drive info                   ;
-;                                                              ;
-;       out: reg = pointer to struct(s) if FAT12 found         ;
+;       out:                    cf = set if failed             ;

 ;                                                              ;
 ;--------------------------------------------------------------;
 init_vfs:
 ;                                                              ;
 ;--------------------------------------------------------------;
 init_vfs: