Function report |
Source Code:kernel\bpf\cgroup.c |
Create Date:2022-07-28 13:27:48 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Must be called with cgroup_mutex held to avoid races.
Proto:int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr, union bpf_attr __user *uattr)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct cgroup * | cgrp | |
const union bpf_attr * | attr | |
union bpf_attr __user * | uattr |
501 | __user * prog_ids = u64_to_user_ptr(prog_ids) |
502 | type = attach_type |
506 | ret = 0 |
511 | If query_flags & lags for BPF_PROG_QUERY Then cnt = bpf_prog_array_length(effective) |
516 | If copy_to_user( & attach_flags, & flags, size of flags ) Then Return -EFAULT |
518 | If copy_to_user( & prog_cnt, & cnt, size of cnt ) Then Return -EFAULT |
528 | If query_flags & lags for BPF_PROG_QUERY Then |
529 | Return bpf_prog_array_copy_to_user(effective, prog_ids, cnt) |
530 | Else |
534 | i = 0 |
543 | Return ret |
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