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kernel
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Adapted from Chris Rodie's patch for bugzilla #1730: 

do a device input status request for int21/ax=4406 for devices
(not for files).


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@756 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2004-01-26 19:40:13 +00:00
parent a9c00dcf86
commit eecbe8439a
1 changed files with 11 additions and 9 deletions
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20
kernel/ioctl.c
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@ -117,9 +117,11 @@ COUNT DosDevIOctl(lregs * r)
case 0x06:
if (s->sft_flags & SFT_FDEVICE)
r->AL = s->sft_flags & SFT_FEOF ? 0xFF : 0;
else
r->AL = s->sft_posit >= s->sft_size ? 0 : 0xFF;
{
nMode = C_ISTAT;
goto IoCharCommon;
}
r->AL = s->sft_posit >= s->sft_size ? 0 : 0xFF;
break;
case 0x07:
@ -143,11 +145,12 @@ COUNT DosDevIOctl(lregs * r)
case 0x10:
nMode = C_IOCTLQRY;
IoCharCommon:
if ((s->sft_flags & SFT_FDEVICE)
|| ((r->AL == 0x02) && (s->sft_dev->dh_attr & SFT_FIOCTL))
if ((s->sft_flags & SFT_FDEVICE) &&
( ((r->AL == 0x02) && (s->sft_dev->dh_attr & SFT_FIOCTL))
|| ((r->AL == 0x03) && (s->sft_dev->dh_attr & SFT_FIOCTL))
|| r->AL == 0x06 || r->AL == 0x07
|| ((r->AL == 0x10) && (s->sft_dev->dh_attr & ATTR_QRYIOCTL))
|| ((r->AL == 0x0c) && (s->sft_dev->dh_attr & ATTR_GENIOCTL)))
|| ((r->AL == 0x0c) && (s->sft_dev->dh_attr & ATTR_GENIOCTL))))
{
CharReqHdr.r_unit = 0;
CharReqHdr.r_command = nMode;
@ -159,15 +162,14 @@ COUNT DosDevIOctl(lregs * r)
return DE_DEVICE;
}
if (r->AL == 0x07)
if (r->AL == 0x06 || r->AL == 0x07)
{
r->AL = CharReqHdr.r_status & S_BUSY ? 00 : 0xff;
r->AX = CharReqHdr.r_status & S_BUSY ? 0000 : 0x00ff;
}
else if (r->AL == 0x02 || r->AL == 0x03)
{
r->AX = CharReqHdr.r_count;
}
else if (r->AL == 0x0c || r->AL == 0x10)
{
r->AX = CharReqHdr.r_status;