函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\btf.c Create Date:2022-07-27 14:35:37
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：btf_ptr_check_member

函数原型：static int btf_ptr_check_member(struct btf_verifier_env *env, const struct btf_type *struct_type, const struct btf_member *member, const struct btf_type *member_type)

返回类型：int

参数：

类型参数名称
struct btf_verifier_env *env
const struct btf_type *struct_type
const struct btf_member *member
const struct btf_type *member_type
1620  struct_size等于size
1621  struct_bits_off等于If the type info kind_flag is set, the btf_member offset* contains both member bitfield size and bit offset. The* bitfield size is set for bitfield members. If the type* info kind_flag is not set, the offset contains only bit* offset.
1622  bytes_offset等于BITS_ROUNDDOWN_BYTES(struct_bits_off)
1624  如果BITS_PER_BYTE_MASKED(struct_bits_off)则
1625  btf_verifier_log_member(env, struct_type, member, "Member is not byte aligned")
1627  返回:负EINVAL
1630  如果struct_size减bytes_offset小于*的长度则
1631  btf_verifier_log_member(env, struct_type, member, "Member exceeds struct_size")
1633  返回:负EINVAL
1636  返回:0