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access_ok

access_ok

access_ok

access_ok

1

The strnlen_user function first checks to see that the user buffer is readable through a call to access_ok.

strnlen_user 函数首先通过调用 access_ok 检查用户缓冲区是否可读。

2

You use the access_ok function to check the validity of the pointer in user space that you intend to access .

您可以使用 access_ok 函数在您想要访问的用户空间检查指针的有效性。

3

As a copy from user space , this function first checks that the buffer is readable via access_ok.

由于从用户空间复制，该函数首先使用 access_ok 检查缓冲区是否可读。

4

You use the access_ok macro to validate a user-space pointer for a given operation .

您可以使用 access_ok 宏来验证给定操作的用户空间指针。

5

You can also test whether a user-space pointer is valid through a call to access_ok.

您也可以通过调用 access_ok 来测试用户空间指针是否有效。

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