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2c2837b09e
Extend bpf_obj_id selftest to verify bpf_link's observability APIs. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200429001614.1544-7-andriin@fb.com
24 lines
440 B
C
24 lines
440 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2017 Facebook
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*/
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#include <stddef.h>
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__uint(max_entries, 1);
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__type(key, __u32);
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__type(value, __u64);
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} test_map_id SEC(".maps");
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SEC("raw_tp/sys_enter")
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int test_obj_id(void *ctx)
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{
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__u32 key = 0;
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__u64 *value;
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value = bpf_map_lookup_elem(&test_map_id, &key);
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return 0;
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}
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