http://www.xml.com/ldd/chapter/book/ch13.html HTH Kedar. On Wed, 2003-02-05 at 05:50, Jerome de Vivie wrote: > > I'm currently writting a module. I use a file from kernelspace. Instead > of using "f_op" read/write calls, i would like to mmap this file into > the kernel memory and use it as a contiguous space. > > I've try to do it by calling "do_mmap", but when i access the memory > from another process inside an "ioctl", i get an Oops with a > "segmentation fault". The address returned doesn't seem to be in good > segment for my module. > > I would like to have a valid address of the begining of the mmaped file > plus a "length", and being able to use this space when the module is > requested from processes. I also want to be able to remap this space if > the file grows. I don't know which functions or kernel structures i > should use. Could you help me a bit ? > > > Kind regards, > > j. > > PS: CC added to me are welcome. > > -- > Jérôme de Vivie > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
