statfs.asm

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;          static structs             ;

statfs:
  .f_type:    dd 00h
  .f_bsize:   dd 00h
  .f_blocks:  dd 00h
  .f_bfree:   dd 00h
  .f_bavail:  dd 00h

  .f_files:   dd 00h
  .f_free:    dd 00h
  .f_fsid:    dq 00h
  .f_namelen: dd 00h
  .f_frsize:  dd 00h ; since linux 2.6
  .f_flags:   dd 00h ; since linux 2.6.36

mov [statfs.f_type], dword 2

mov eax, [statfs.f_bsize]

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;          Dynamic structs            ;

f_type:    equ 0
f_bsize:   equ f_type+4
f_blocks:  equ f_bsize+4
f_bfree:   equ f_blocks+4
f_bavail:  equ f_bfree+4
f_files:   equ f_bavail+4
f_ffree:   equ f_files+4
f_fsid:    equ f_ffree+4
f_namelen: equ f_fsid+8
f_frsize:  equ f_namelen+4
f_flags:   equ f_frsize+4

; OR we can do it like so:

%define f_type    0
%define f_bsize   4
%define f_blocks  8
%define f_bfree   12
%define f_bavail  16
%define f_files   20
%define f_ffree   24
%define f_fsid    28
%define f_namelen 36
%define f_frsize  40
%define f_flags   44

mov [edi+f_type], dword 12
mov [myStruct+f_type, dword 12

mov eax, [myStruct+f_bsize]
mov eax, [esi+f_bsize]