Function report |
Source Code:include\linux\thread_info.h |
Create Date:2022-07-28 05:35:14 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:check_copy_size
Proto:static __always_inline __must_check bool check_copy_size(const void *addr, size_t bytes, bool is_source)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
const void * | addr | |
size_t | bytes | |
bool | is_source |
140 | sz = __compiletime_object_size(addr) |
141 | If Value for the false possibility is greater at compile time(sz >= 0 && sz < bytes) Then |
142 | If Not __builtin_constant_p(bytes) Then copy_overflow(sz, bytes) |
144 | Else if is_source Then __bad_copy_from() |
146 | Else __bad_copy_to() |
148 | Return false |
150 | If WARN_ON_ONCE(bytes > INT_MAX) Then Return false |
152 | check_object_size(addr, bytes, is_source) |
153 | Return true |
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