访问用户空间内存访问函数(如- access_ok()，get_from_user())时需要包含的头文件的确切路径。

Question

我在linux-headers-3.2.0-49中搜索了用户内存访问函数。它在uaccess.h头文件中定义，但uaccess.h文件太多。下面是我在linux-headers-3.2.0-49目录中执行"find . -name uaccess.h“得到的结果。

./include/linux/uaccess.h
./include/asm-generic/uaccess.h
./arch/frv/include/asm/uaccess.h
./arch/cris/include/asm/uaccess.h
./arch/cris/include/arch-v32/arch/uaccess.h
./arch/cris/include/arch-v10/arch/uaccess.h
./arch/um/include/asm/uaccess.h
./arch/blackfin/include/asm/uaccess.h
./arch/openrisc/include/asm/uaccess.h
./arch/parisc/include/asm/uaccess.h
./arch/sparc/include/asm/uaccess.h
./arch/mips/include/asm/uaccess.h
./arch/avr32/include/asm/uaccess.h
./arch/alpha/include/asm/uaccess.h
./arch/sh/include/asm/uaccess.h
./arch/m68k/include/asm/uaccess.h
./arch/arm/include/asm/uaccess.h
./arch/m32r/include/asm/uaccess.h
./arch/hexagon/include/asm/uaccess.h
./arch/tile/include/asm/uaccess.h
./arch/microblaze/include/asm/uaccess.h
./arch/mn10300/include/asm/uaccess.h
./arch/unicore32/include/asm/uaccess.h
./arch/h8300/include/asm/uaccess.h
./arch/s390/include/asm/uaccess.h
./arch/ia64/include/asm/uaccess.h
./arch/xtensa/include/asm/uaccess.h
./arch/powerpc/include/asm/uaccess.h
./arch/score/include/asm/uaccess.h
./arch/x86/include/asm/uaccess.h

谁能告诉我在访问access_ok()，get_from_user()等函数时应该包含哪条路径？

Answer 1

请参考下面的link。这里有一些使用access_ok()的例子。