Messages in this thread | | | Date | Thu, 23 Mar 2006 10:33:32 -0800 | From | William D Waddington <> | Subject | Re: [RFCLUE2] 64 bit driver 32 bit app ioctl |
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Arjan van de Ven wrote: > On Thu, 2006-03-23 at 07:06 -0800, William D Waddington wrote: > >>Apologies for dashing this off without the proper homework. My >>customer is out of country doing an installation, and didn't test >>this configuration first :( >> >>Customer is running RHEL3 on a 64 bit PC. Running the 64 bit kernel >>and my 64 bit driver. They are calling the driver from their 32 bit >>app. The driver supports a whole mess of ioctls. >> >>It seems that the kernel is trapping the 32-bit ioctl call and returning >>an error to the app w/out calling the driver. It looks like >>register_ioctl32_conversion() can convice the kernel that the driver can >>handle 32-bit calls, but it has to be called for each ioctl cmd (??) > > > you forgot to attach you code btw or post the url to it..
No I didn't :) It's just too ugly for public view. And I notice it needs some other fix-ups like fixed width data types in the ioctl routine...
Thanks to all for the info. I've got some typing to do.
Bill
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