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/* * linux/arch/mips/kernel/ioport.c */ #include <linux/sched.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/ioport.h> /* * This changes the io permissions bitmap in the current task. */ asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int turn_on) { return -ENOSYS; } /* * sys_iopl has to be used when you want to access the IO ports * beyond the 0x3ff range: to get the full 65536 ports bitmapped * you'd need 8kB of bitmaps/process, which is a bit excessive. * * Here we just change the eflags value on the stack: we allow * only the super-user to do it. This depends on the stack-layout * on system-call entry - see also fork() and the signal handling * code. */ asmlinkage int sys_iopl(long ebx,long ecx,long edx, long esi, long edi, long ebp, long eax, long ds, long es, long fs, long gs, long orig_eax, long eip,long cs,long eflags,long esp,long ss) { return -ENOSYS; } |