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BACKPORT: bpf: introduce BPF_PROG_QUERY command

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introduce BPF_PROG_QUERY command to retrieve a set of either
attached programs to given cgroup or a set of effective programs
that will execute for events within a cgroup

Change-Id: I05e0ed5f6eddc30f4a18216d4541448816fd1ae5
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
for cgroup bits
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexei Starovoitov 2017-10-02 22:50:22 -07:00 • committed by Mustafa Gökmen
parent 1ada688d80
commit 28ebd88f5c
No known key found for this signature in database
GPG key ID: 3204D8100CFF21ED
7 changed files with 150 additions and 2 deletions
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10
kernel/cgroup.c
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@ -6667,6 +6667,16 @@ int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
mutex_unlock(&cgroup_mutex);
return ret;
}
int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
union bpf_attr __user *uattr)
{
int ret;
mutex_lock(&cgroup_mutex);
ret = __cgroup_bpf_query(cgrp, attr, uattr);
mutex_unlock(&cgroup_mutex);
return ret;
}
#endif /* CONFIG_CGROUP_BPF */
#ifdef CONFIG_CGROUP_DEBUG