46 lines
764 B
C
46 lines
764 B
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2021 Google LLC.
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*/
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#include <errno.h>
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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__u32 invocations = 0;
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__u32 assertion_error = 0;
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__u32 retval_value = 0;
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__u32 ctx_retval_value = 0;
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SEC("cgroup/getsockopt")
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int get_retval(struct bpf_sockopt *ctx)
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{
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retval_value = bpf_get_retval();
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ctx_retval_value = ctx->retval;
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__sync_fetch_and_add(&invocations, 1);
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return 1;
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}
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SEC("cgroup/getsockopt")
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int set_eisconn(struct bpf_sockopt *ctx)
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{
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__sync_fetch_and_add(&invocations, 1);
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if (bpf_set_retval(-EISCONN))
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assertion_error = 1;
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return 1;
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}
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SEC("cgroup/getsockopt")
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int clear_retval(struct bpf_sockopt *ctx)
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{
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__sync_fetch_and_add(&invocations, 1);
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ctx->retval = 0;
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return 1;
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}
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