uaccess.h (7fbb8759eff9a348efa5f352ffaa51c364837c4b) uaccess.h (59f0cb0fddc14ffc6676ae62e911f8115ebc8ccf)
1/*
2 * arch/arm/include/asm/uaccess.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#ifndef _ASMARM_UACCESS_H

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395extern unsigned long __must_check __strncpy_from_user(char *to, const char __user *from, unsigned long count);
396extern unsigned long __must_check __strnlen_user(const char __user *s, long n);
397
398static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
399{
400 if (access_ok(VERIFY_READ, from, n))
401 n = __copy_from_user(to, from, n);
402 else /* security hole - plug it */
1/*
2 * arch/arm/include/asm/uaccess.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#ifndef _ASMARM_UACCESS_H

--- 386 unchanged lines hidden (view full) ---

395extern unsigned long __must_check __strncpy_from_user(char *to, const char __user *from, unsigned long count);
396extern unsigned long __must_check __strnlen_user(const char __user *s, long n);
397
398static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
399{
400 if (access_ok(VERIFY_READ, from, n))
401 n = __copy_from_user(to, from, n);
402 else /* security hole - plug it */
403 memzero(to, n);
403 memset(to, 0, n);
404 return n;
405}
406
407static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
408{
409 if (access_ok(VERIFY_WRITE, to, n))
410 n = __copy_to_user(to, from, n);
411 return n;

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404 return n;
405}
406
407static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
408{
409 if (access_ok(VERIFY_WRITE, to, n))
410 n = __copy_to_user(to, from, n);
411 return n;

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