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newlib-cygwin
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* fhandler_serial.cc (fhandler_serial::ioctl): Don't try to figure out if OS 

has the capability to retrieve RTS/CTS.  Just set default values if
DeviceIoControl fails.  (suggested by Sergey Okhapkin)
This commit is contained in:
Christopher Faylor 2002-11-06 01:50:32 +00:00
parent 087a28bf5e
commit 2035f402e4
2 changed files with 25 additions and 35 deletions
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6
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,9 @@
2002-11-05 Christopher Faylor <cgf@redhat.com>
* fhandler_serial.cc (fhandler_serial::ioctl): Don't try to figure out
if OS has the capability to retrieve RTS/CTS. Just set default values
if DeviceIoControl fails. (suggested by Sergey Okhapkin)
2002-11-05 Sergey Okhapkin <sos@prospect.com.ru>
* fhandler_serial.cc (fhandler_serial::raw_read): Use correct type for minchars.

54
winsup/cygwin/fhandler_serial.cc
View File

@ -18,6 +18,7 @@ details. */
#include "sigproc.h"
#include "pinfo.h"
#include <sys/termios.h>
#include <ddk/ntddser.h>
/**********************************************************************/
/* fhandler_serial */
@ -56,7 +57,7 @@ fhandler_serial::raw_read (void *ptr, size_t ulen)
ResetEvent (io_status.hEvent);
}
for (n = 0, tot = 0; ulen; ulen -= n, ptr = (char *)ptr + n)
for (n = 0, tot = 0; ulen; ulen -= n, ptr = (char *) ptr + n)
{
COMSTAT st;
DWORD inq = 1;
@ -407,41 +408,28 @@ fhandler_serial::ioctl (unsigned int cmd, void *buffer)
}
else
{
unsigned modem_status = 0;
ipbuffer = 0;
if (modem_lines & MS_CTS_ON)
modem_status |= TIOCM_CTS;
ipbuffer |= TIOCM_CTS;
if (modem_lines & MS_DSR_ON)
modem_status |= TIOCM_DSR;
ipbuffer |= TIOCM_DSR;
if (modem_lines & MS_RING_ON)
modem_status |= TIOCM_RI;
ipbuffer |= TIOCM_RI;
if (modem_lines & MS_RLSD_ON)
modem_status |= TIOCM_CD;
if (!wincap.supports_reading_modem_output_lines ())
modem_status |= rts | dtr;
ipbuffer |= TIOCM_CD;
DWORD cb;
DWORD mcr;
if (!DeviceIoControl (get_handle (), IOCTL_SERIAL_GET_DTRRTS,
NULL, 0, &mcr, 4, &cb, 0) || cb != 4)
ipbuffer |= rts | dtr;
else
{
DWORD cb;
DWORD mcr;
BOOL result = DeviceIoControl (get_handle (), 0x001B0078, NULL,
0, &mcr, 4, &cb, 0);
if (!result)
{
__seterrno ();
res = -1;
goto out;
}
if (cb != 4)
{
set_errno (EINVAL); /* FIXME: right errno? */
res = -1;
goto out;
}
if (mcr & 2)
modem_status |= TIOCM_RTS;
ipbuffer |= TIOCM_RTS;
if (mcr & 1)
modem_status |= TIOCM_DTR;
ipbuffer |= TIOCM_DTR;
}
ipbuffer = modem_status;
}
break;
case TIOCMSET:
@ -475,15 +463,12 @@ fhandler_serial::ioctl (unsigned int cmd, void *buffer)
res = -1;
}
}
else if (EscapeCommFunction (get_handle (), CLRDTR))
dtr = 0;
else
{
if (EscapeCommFunction (get_handle (), CLRDTR))
dtr = 0;
else
{
__seterrno ();
res = -1;
}
__seterrno ();
res = -1;
}
break;
case TIOCINQ:
@ -502,7 +487,6 @@ fhandler_serial::ioctl (unsigned int cmd, void *buffer)
break;
}
out:
termios_printf ("%d = ioctl (%p, %p)", res, cmd, buffer);
# undef ibuffer
# undef ipbuffer