On May 18 17:33, Alessio Faina wrote: > Ok thanks, I've been able to find the character device under > "/proc/sys/DosDevices/Global/deviceName"; now I'm stuck with the mmap > implementation; when I do mmap in the userland program it returns me > errno 19 (#define ENODEV 19 /* No such device */) obviously because > I haven't set anything in the kernel module; there's a way to make visible a > portion of memory to be used by the mmap in the kernel? The memory is Non > Paged > and allocated with a ExAllocatePoolWithTag in 'win terms'.
The problem is that the /proc/sys interface is only implemented for very basic operations. There's no ioctl and mmap implemented for arbitrary devices in Cygwin. To get your device working, you have to either implement support for it in Cygwin, or you have to use native W32 or NT calls to access your device. Alternatively: Since you can open the device, read/write should be possible. If you implement all interaction with your device (send comands, request map address, etc) in the driver as specially crafted read/write calls, you should be able to communicate with it from Cygwin applications without having to implement a Cygwin file handler. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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