2011/4/2 Sengottuvelan S <[email protected]>: > > On Fri, Apr 1, 2011 at 3:32 PM, Sengottuvelan S <[email protected]> > wrote: >> >> Hi All, >> >> I am trying to access /dev/mem in my user process. I could not access Check the kernel config CONFIG_STRICT_DEVMEM >> because not a privileged access. I tried to use iopl(3) call in linux 2.6, >> but i am getting unresolved symbol for this. Is any other way to get access >> in user process. I am not sure how to solve this. Can you someone throw some >> light on this. >> >> if(iopl(3)){ >> fprintf(stderr, "Cannot get I/O permissions (being root helps)"); >> return -1; >> } >> >> if ((fd = open("/dev/mem", O_RDWR | O_SYNC)) < 0) { >> fprintf(stderr, "Failed to open /dev/mem"); >> return -1; >> } >> >> -- >> Regards, >> S. Sengottuvelan. > > > > -- > Regards, > S. Sengottuvelan. > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >
-- Best Regards Lin _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
