Function report |
Source Code:kernel\bpf\cgroup.c |
Create Date:2022-07-28 13:28:15 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:__cgroup_bpf_run_filter_setsockopt
Proto:int __cgroup_bpf_run_filter_setsockopt(struct sock *sk, int *level, int *optname, char __user *optval, int *optlen, char **kernel_optval)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct sock * | sk | |
int * | level | |
int * | optname | |
char __user * | optval | |
int * | optlen | |
char ** | kernel_optval |
987 | cgrp = sock_cgroup_ptr( & sk_cgrp_data) |
999 | If Not cgroup_bpf_enabled || __cgroup_bpf_prog_array_is_empty(cgrp, BPF_CGROUP_SETSOCKOPT) Then Return 0 |
1007 | max_optlen = max_t - return maximum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(int, 16, * optlen) |
1009 | ret = sockopt_alloc_buf( & ctx, max_optlen) |
1015 | If copy_from_user(optval, optval, * optlen) != 0 Then |
1021 | ret = BPF_PROG_RUN_ARRAY( array of effective progs in this cgroup [BPF_CGROUP_SETSOCKOPT], & ctx, BPF_PROG_RUN) |
1023 | release_sock(sk) |
1025 | If Not ret Then |
1030 | If optlen == -1 Then |
1032 | ret = 1 |
1033 | Else if optlen > max_optlen || optlen < -1 Then |
1036 | Else |
1038 | ret = 0 |
1044 | kernel_optval = optval |
1047 | out : |
1048 | If ret Then sockopt_free_buf( & ctx) |
1050 | Return ret |
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