46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
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* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __SKAS_UACCESS_H
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#define __SKAS_UACCESS_H
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#include "asm/errno.h"
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#include "asm/fixmap.h"
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#define access_ok_skas(type, addr, size) \
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((segment_eq(get_fs(), KERNEL_DS)) || \
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(((unsigned long) (addr) < TASK_SIZE) && \
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((unsigned long) (addr) + (size) <= TASK_SIZE)) || \
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((type == VERIFY_READ ) && \
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((unsigned long) (addr) >= FIXADDR_USER_START) && \
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((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
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((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
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static inline int verify_area_skas(int type, const void * addr,
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unsigned long size)
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{
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return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
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}
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extern int copy_from_user_skas(void *to, const void *from, int n);
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extern int copy_to_user_skas(void *to, const void *from, int n);
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extern int strncpy_from_user_skas(char *dst, const char *src, int count);
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extern int __clear_user_skas(void *mem, int len);
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extern int clear_user_skas(void *mem, int len);
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extern int strnlen_user_skas(const void *str, int len);
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#endif
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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