30 lines
698 B
C
30 lines
698 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
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#include <vmlinux.h>
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#include <bpf/bpf_tracing.h>
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#include "../bpf_testmod/bpf_testmod.h"
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char _license[] SEC("license") = "GPL";
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pid_t tgid = 0;
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/* This is a test BPF program that uses struct_ops to access an argument
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* that may be NULL. This is a test for the verifier to ensure that it can
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* rip PTR_MAYBE_NULL correctly.
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*/
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SEC("struct_ops/test_maybe_null")
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int BPF_PROG(test_maybe_null, int dummy,
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struct task_struct *task)
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{
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if (task)
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tgid = task->tgid;
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return 0;
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}
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SEC(".struct_ops.link")
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struct bpf_testmod_ops testmod_1 = {
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.test_maybe_null = (void *)test_maybe_null,
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};
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