[ECOS] conversion of cyg_io_handle_t type to filedescriptor of type integer

[ECOS] conversion of cyg_io_handle_t type to filedescriptor of type integer

[Thiagarajan Rajasekaran]

Hi,
I'm trying to use the ioctl(int fd, u_long cmd, void *data) defined in
ecos/packages/net/tcpip/src/lib/ioctl.c for my task. This function needs
filedescriptor fd as one of the parameters. In ECOS when you open a
serial device it gives you a handle of type cyg_io_handle_t. Is there a
way to get the filedescriptor from cyg_io_handle_t or I should write my
own version of ioctl()?.  Please reply to me asap.

thanks,

Raj
--
****************************************************************
*   Thiagarajan Rajasekaran                                    *
*   ConnectTel, Inc.                    Austin, Texas.         *
*   Phone : 512-338-1111 Ext-104        Fax : 512-918-0449     *
*   Email : rajt@connecttel.com                                *
*   Site  : http://www.connecttel.com                          *
****************************************************************

Re: [ECOS] conversion of cyg_io_handle_t type to filedescriptor of type integer

[Jonathan Larmour]

Thiagarajan Rajasekaran wrote:
> 
> Hi,
> I'm trying to use the ioctl(int fd, u_long cmd, void *data) defined in
> ecos/packages/net/tcpip/src/lib/ioctl.c for my task. This function needs
> filedescriptor fd as one of the parameters. In ECOS when you open a
> serial device it gives you a handle of type cyg_io_handle_t. Is there a
> way to get the filedescriptor from cyg_io_handle_t or I should write my
> own version of ioctl()?.  Please reply to me asap.

Why do you need to use ioctl() when you can use something more appropriate
like cyg_io_get_config()?

But if you really want to implement it, the way to do it is with the fileio
package, and use open() instead of cyg_io_open() etc. Then fill in the
dev_fo_ioctl function in io/fileio/current/src/devfs.cxx.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions    http://www.redhat-techworld.com/

Re: [ECOS] conversion of cyg_io_handle_t type to filedescriptor of type integer

[Thiagarajan Rajasekaran]

Thanks a lot. I got my problem fixed.

Raj

Jonathan Larmour wrote:

> Thiagarajan Rajasekaran wrote:
> >
> > Hi,
> > I'm trying to use the ioctl(int fd, u_long cmd, void *data) defined in
> > ecos/packages/net/tcpip/src/lib/ioctl.c for my task. This function needs
> > filedescriptor fd as one of the parameters. In ECOS when you open a
> > serial device it gives you a handle of type cyg_io_handle_t. Is there a
> > way to get the filedescriptor from cyg_io_handle_t or I should write my
> > own version of ioctl()?.  Please reply to me asap.
>
> Why do you need to use ioctl() when you can use something more appropriate
> like cyg_io_get_config()?
>
> But if you really want to implement it, the way to do it is with the fileio
> package, and use open() instead of cyg_io_open() etc. Then fill in the
> dev_fo_ioctl function in io/fileio/current/src/devfs.cxx.
>
> Jifl
> --
> Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
> Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
> Come to the Red Hat TechWorld open source conference in Brussels!
> Keynotes, techie talks and exhibitions    http://www.redhat-techworld.com/

--
****************************************************************
*   Thiagarajan Rajasekaran                                    *
*   ConnectTel, Inc.                    Austin, Texas.         *
*   Phone : 512-338-1111 Ext-104        Fax : 512-918-0449     *
*   Email : rajt@connecttel.com                                *
*   Site  : http://www.connecttel.com                          *
****************************************************************