74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
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* Licensed under the GPL
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*/
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#include "linux/sched.h"
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#include "asm/uaccess.h"
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int copy_from_user_tt(void *to, const void __user *from, int n)
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{
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if(!access_ok(VERIFY_READ, from, n))
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return(n);
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return(__do_copy_from_user(to, from, n, ¤t->thread.fault_addr,
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¤t->thread.fault_catcher));
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}
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int copy_to_user_tt(void __user *to, const void *from, int n)
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{
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if(!access_ok(VERIFY_WRITE, to, n))
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return(n);
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return(__do_copy_to_user(to, from, n, ¤t->thread.fault_addr,
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¤t->thread.fault_catcher));
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}
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int strncpy_from_user_tt(char *dst, const char __user *src, int count)
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{
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int n;
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if(!access_ok(VERIFY_READ, src, 1))
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return(-EFAULT);
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n = __do_strncpy_from_user(dst, src, count,
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¤t->thread.fault_addr,
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¤t->thread.fault_catcher);
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if(n < 0) return(-EFAULT);
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return(n);
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}
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int __clear_user_tt(void __user *mem, int len)
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{
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return(__do_clear_user(mem, len,
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¤t->thread.fault_addr,
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¤t->thread.fault_catcher));
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}
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int clear_user_tt(void __user *mem, int len)
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{
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if(!access_ok(VERIFY_WRITE, mem, len))
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return(len);
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return(__do_clear_user(mem, len, ¤t->thread.fault_addr,
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¤t->thread.fault_catcher));
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}
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int strnlen_user_tt(const void __user *str, int len)
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{
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return(__do_strnlen_user(str, len,
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¤t->thread.fault_addr,
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¤t->thread.fault_catcher));
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}
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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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