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a4ae5c31e0
get_current_cgroup_id_user allows testing for bpf_get_current_cgroup_id() bpf API but is not integrated into test_progs, and so is not tested automatically in CI. Convert it to the test_progs framework to allow running it automatically. The most notable differences with the old test are the following: - the new test relies on autoattach instead of manually hooking/enabling the targeted tracepoint through perf_event, which reduces quite a lot the test code size - it also accesses bpf prog data through global variables instead of maps - sleep duration passed to nanosleep syscall has been reduced to its minimum to not impact overall CI duration (we only care about the syscall being properly triggered, not about the passed duration) Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com> Link: https://lore.kernel.org/r/20240813-convert_cgroup_tests-v4-1-a33c03458cf6@bootlin.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
22 lines
387 B
C
22 lines
387 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2018 Facebook
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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__u64 cg_id;
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__u64 expected_pid;
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SEC("tracepoint/syscalls/sys_enter_nanosleep")
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int trace(void *ctx)
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{
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__u32 pid = bpf_get_current_pid_tgid();
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if (expected_pid == pid)
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cg_id = bpf_get_current_cgroup_id();
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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