selftests/bpf: Don't hard-code root cgroup id
authorStanislav Fomichev <sdf@google.com>
Mon, 2 Dec 2019 20:01:43 +0000 (12:01 -0800)
committerAlexei Starovoitov <ast@kernel.org>
Thu, 5 Dec 2019 01:56:22 +0000 (17:56 -0800)
commit01d434ce98d38e36901c72493b96afc4075ee887
treeccfa1fb75daed2ee62cd8252b106dc255a6f8782
parentedbca120a8cdfa5a5793707e33497aa5185875ca
selftests/bpf: Don't hard-code root cgroup id

Commit 40430452fd5d ("kernfs: use 64bit inos if ino_t is 64bit") changed
the way cgroup ids are exposed to the userspace. Instead of assuming
fixed root id, let's query it.

Fixes: 40430452fd5d ("kernfs: use 64bit inos if ino_t is 64bit")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191202200143.250793-1-sdf@google.com
tools/testing/selftests/bpf/test_skb_cgroup_id_user.c