函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\maccess.c Create Date:2022-07-27 15:30:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：probe_read_common

函数原型：static __always_inline long probe_read_common(void *dst, const void __user *src, size_t size)

返回类型：long

参数：

类型参数名称
void *dst
const void __user *src
size_tsize
14  These routines enable/disable the pagefault handler. If disabled, it will* not take any locks and go straight to the fixup table.* User access methods will not sleep when called from a pagefault_disabled()* environment.
15  ret等于Architectures should provide two primitives (raw_copy_{to,from}_user())* and get rid of their private instances of copy_{to,from}_user() and* __copy_{to,from}_user{,_inatomic}().* raw_copy_{to,from}_user(to, from, size) should copy up to size bytes and
16  pagefault_enable()
18  返回:如果ret则负EFAULT否则0
调用者
名称描述
__probe_kernel_read
__probe_user_read