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new helper: uaccess_kernel()

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Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2017-03-20 21:08:07 -04:00
commit db68ce10c4
32 changed files with 44 additions and 42 deletions
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arch/alpha/include/asm/uaccess.h
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@ -425,7 +425,7 @@ clear_user(void __user *to, long len)
#undef __module_call
#define user_addr_max() \
(segment_eq(get_fs(), USER_DS) ? TASK_SIZE : ~0UL)
(uaccess_kernel() ? ~0UL : TASK_SIZE)
extern long strncpy_from_user(char *dest, const char __user *src, long count);
extern __must_check long strlen_user(const char __user *str);