GuanXuetao 7f509a9ef7 asm-generic headers: add arch-specific __strnlen_user calling in uaccess.h ...

This patch changes the implementation of strnlen_user in include/asm-generic/uaccess.h.
Originally, it calls strlen() function directly, which may not correctly handle the access of
user space in most mmu-enabled architectures.
New __strnlen_user is added for using as an architecture specific function.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

2011-03-17 09:19:05 +08:00

7.2 KiB

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