Category : C++ Source Code
Archive   : VCCRT2.ZIP
Filename : D_SFILE.ASM

page ,132
title d_sfile - Set File Attributes
;***
;d_sfile.asm - Set file attributes
;
; Copyright (c) 1987-1992, Microsoft Corporation. All rights reserved.
;
;Purpose:
; Direct interface to DOS "set file attribute" system call.
;
;*******************************************************************************

include version.inc
.xlist
include cmacros.inc
include msdos.inc
.list

sBegin code

assumes cs,code
assumes ds,data

extrn __dosreturn:near

page
;***
;unsigned _dos_setfileattr(path, attrib) - Set file attributes
;
;Purpose:
; Direct interface to the DOS "set file attribute"
; system call (int 21h,43h/al=1).
;
;Entry:
; char *path = pointer to pathname of file
; unsigned attrib = new attributes
;
;Exit:
; 0 = success
;
; !0 = failure
; return value = error code returned by DOS
; errno = appropriate mapped value
;Uses:
; BX,CX,DX,ES
;
;Exceptions:
; None
;
;*******************************************************************************

cProc _dos_setfileattr,,<>

parmDP path
parmW attrib

cBegin

;Get arguments to system call.

if sizeD
push ds ;save ds
lds dx,[path] ;get pathname of file
else
mov dx,[path] ;get pathname of file
endif
mov cx,[attrib] ;get new attributes

;Issue the setfileattr call
;cx = attributes, ds:dx = pathname

mov ax,(DOS_filemode SHL 8) + 1 ;ah = call / al = 1 = set attr
callos ;set attributes
if sizeD
pop ds ;restore ds
endif
jmp __dosreturn ; return 0 if successful

cEnd

sEnd
end