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IOCTL: Add int21/4408 is drive removable

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Andrew Bird 2025-11-01 17:12:30 +00:00 committed by Kenneth J Davis
parent 34003d0caa
commit b2f23f5a19
1 changed files with 12 additions and 2 deletions
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14
kernel/ioctl.c
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@ -184,7 +184,7 @@ int DosDevIOctl(lregs * r)
}
else
{
if (r->AL != 9)
if (r->AL != 8 && r->AL != 9)
return DE_INVLDDRV;
dev = NULL;
attr = ATTR_REMOTE;
@ -192,6 +192,16 @@ int DosDevIOctl(lregs * r)
switch (r->AL)
{
case 0x08:
{
struct cds FAR *cdsp = get_cds1(r->BL & 0x1f);
if (cdsp == NULL)
return DE_INVLDDRV;
if (cdsp->cdsFlags & CDSNETWDRV)
return DE_INVLDFUNC;
r->AX = (dpbp->dpb_flags == M_DONT_KNOW);
return SUCCESS;
}
case 0x09:
{
/* note from get_dpb() */
@ -213,7 +223,7 @@ int DosDevIOctl(lregs * r)
return SUCCESS;
}
/* fall through */
default: /* 0x04, 0x05, 0x08, 0x0e, 0x0f, 0x11 */
default: /* 0x04, 0x05, 0x0e, 0x0f, 0x11 */
break;
}
break;