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authorAlexei Starovoitov <ast@fb.com>2017-10-03 07:50:22 +0200
committerDavid S. Miller <davem@davemloft.net>2017-10-05 01:05:05 +0200
commit468e2f64d220fe2dc11caa2bcb9b3a1e50fc7321 (patch)
treeda21e580b4a534f6feab72ba479b6d3e0ad951f1 /kernel/cgroup/cgroup.c
parentbpf: multi program support for cgroup+bpf (diff)
downloadlinux-468e2f64d220fe2dc11caa2bcb9b3a1e50fc7321.tar.xz
linux-468e2f64d220fe2dc11caa2bcb9b3a1e50fc7321.zip
bpf: introduce BPF_PROG_QUERY command
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 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>
Diffstat (limited to 'kernel/cgroup/cgroup.c')
-rw-r--r--kernel/cgroup/cgroup.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 57eb866ae78d..269512b94a94 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -5761,4 +5761,14 @@ 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 */