Volume Serial Number

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Force

Joined: 12 Jun 2012
Posts: 29

Force 22 Sep 2012, 21:21

Hello

I wrote this code in Masm32 before... I m trying to translate it to Fasm

but there is problem for wsprintf

Can anybody help me ...how to use wsprintf in this code ?

Code:

INCLUDE "C:\Fasm\include\win32ax.inc"

.data

 AppName db "VolumeInformation of C:\",0
PathName db "C:\",0
VolumeName db 16 dup(?)
NameSize dd 50
volumeSerial dd 0
VolumeSize dd 50
VolSer db 50 dup(?)
DiskDataHex            DB "%lX",NULL
Buffer db 100 dup(?)
drvName db "Drive Name     : C:\ ",0
srNum db "Serial Number :   ",0
NL db 13,10  

    
.code            

WIN_START:
invoke GetVolumeInformation,addr PathName,addr VolumeName,addr NameSize,addr volumeSerial,addr VolumeSize,NULL,NULL,NULL
INVOKE wsprintf,ADDR VolSer,ADDR DiskDataHex,volumeSerial
invoke lstrcat,addr Buffer,addr drvName
invoke lstrcat,addr Buffer,addr VolumeName
invoke lstrcat,addr Buffer,addr NL
invoke lstrcat,addr Buffer,addr srNum
invoke lstrcat,addr Buffer,addr VolSer

invoke MessageBox,NULL,addr Buffer,addr AppName,0
    
invoke  ExitProcess, 0

.end WIN_START

22 Sep 2012, 21:21

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 22 Sep 2012, 21:56

Very simple to fix error: INVOKE and ADDR must be written all lowercase. This is because these are not assembler nor preprocessor directives but a macro and a symbol respectively and since fasm is case-sensitive you get the error.

22 Sep 2012, 21:56

Force

Joined: 12 Jun 2012
Posts: 29

Force 22 Sep 2012, 23:11

yes I solved problem by using " Cinvoke " its different function for me

at least i learned how to use it Smile

It is working Code :

Code:

INCLUDE "C:\Fasm\include\win32ax.inc"

.data

 AppName db "VolumeInformation of C:\",0
PathName db "C:\",0
VolumeName db 16 dup(?)
NameSize dd 50
volumeSerial dd 0
VolumeSize dd 50
VolSer db 50 dup(?)
DiskDataHex                DB "%lX",NULL
Buffer db 100 dup(?)
drvName db "Drive Name     : C:\ ",0
srNum db "Serial Number :   ",0
NL db 13,10  

    
.code            

WIN_START:
invoke GetVolumeInformation,addr PathName,addr VolumeName,addr NameSize,addr volumeSerial,addr VolumeSize,NULL,NULL,NULL
cinvoke wsprintf, VolSer,DiskDataHex,[volumeSerial] 
invoke lstrcat,addr Buffer,addr drvName
invoke lstrcat,addr Buffer,addr VolumeName
invoke lstrcat,addr Buffer,addr NL
invoke lstrcat,addr Buffer,addr srNum
invoke lstrcat,addr Buffer,addr VolSer

invoke MessageBox,NULL,addr Buffer,addr AppName,0
    
invoke  ExitProcess, 0

.end WIN_START

22 Sep 2012, 23:11

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 23 Sep 2012, 00:02

Quote:

yes I solved problem by using " Cinvoke " its different function for me

Oh yes, sorry, in addition to the casing problem, you need to use cinvoke for variadic functions (or _cdelc functions).

Here is a simplified version of your code:

Code:

INCLUDE "C:\Fasm\include\win32axp.inc"

NL equ 13, 10
NAME_SIZE equ (MAX_PATH + 1)
.data
AppName  db "VolumeInformation of C:\",0
PathName db "D:\",0

fmt      db "Drive Name    : C:\ %s", NL,\
            "Serial Number :   %lX", 0

VolumeName   rb NAME_SIZE
volumeSerial dd 0
Buffer       rb 256
    
.code            
; I'm not using addr because it is not needed when accessing global vars.
; Using addr causes an additional instruction (LEA) to be used.

WIN_START:
invoke GetVolumeInformation, PathName,\     ; _In_opt_   LPCTSTR lpRootPathName
                             VolumeName,\   ; _Out_opt_  LPTSTR lpVolumeNameBuffer
                             NAME_SIZE,\    ; _In_       DWORD nVolumeNameSize
                             volumeSerial,\ ; _Out_opt_  LPDWORD lpVolumeSerialNumber
                             NULL,\         ; _Out_opt_  LPDWORD lpMaximumComponentLength
                             NULL,\         ; _Out_opt_  LPDWORD lpFileSystemFlags
                             NULL,\         ; _Out_opt_  LPTSTR lpFileSystemNameBuffer
                             0              ; _In_       DWORD nFileSystemNameSize

cinvoke wsprintf, Buffer, fmt, VolumeName, [volumeSerial]

invoke MessageBox, NULL, Buffer, AppName, 0
    
invoke  ExitProcess, 0

.end WIN_START

Note that you also were passing nVolumeNameSize the wrong way, in your original code you should have used [NameSize], as it requires the content, not the address of it.

23 Sep 2012, 00:02

Force

Joined: 12 Jun 2012
Posts: 29

Force 23 Sep 2012, 10:34

Thanks LocoDelAssemly for simplified code

i just started to learn fasm so i dunno fasm enough

in fact i m new in assembly

Force

23 Sep 2012, 10:34

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