函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\include\asm\checksum_32.h Create Date:2022-07-27 06:51:23
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：复制FS同时校验

函数原型：static inline __wsum csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr)

返回类型：__wsum

参数：

类型参数名称
const void __user *src
void *dst
intlen
__wsumsum
int *err_ptr
54  might_sleep()
55  stac()
56  ret等于he same as csum_partial, but copies from src while it* checksums, and handles user-space pointer exceptions correctly, when needed.* here even more important to align src and dst on a 32-bit (or even* better 64-bit) boundary
58  clac()
60  返回:ret
调用者
名称描述
csum_and_copy_from_user