62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) Meta Platforms, Inc. and affiliates. */
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#include <stdbool.h>
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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/* volatile to force a read */
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const volatile int var1;
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volatile int var2 = 1;
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struct {
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int var3_1;
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__s64 var3_2;
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} var3;
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int libout1;
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extern volatile bool CONFIG_BPF_SYSCALL __kconfig;
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int var4[4];
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__weak int var5 SEC(".data");
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/* Fully contained within library extern-and-definition */
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extern int var6;
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int var7 SEC(".data.custom");
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int (*fn_ptr)(void);
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struct {
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__uint(type, BPF_MAP_TYPE_HASH);
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__type(key, __u32);
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__type(value, __u32);
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__uint(max_entries, 16);
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} map1 SEC(".maps");
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extern struct {
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__uint(type, BPF_MAP_TYPE_HASH);
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__type(key, __u32);
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__type(value, __u32);
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__uint(max_entries, 16);
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} map2 SEC(".maps");
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int lib_routine(void)
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{
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__u32 key = 1, value = 2;
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(void) CONFIG_BPF_SYSCALL;
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bpf_map_update_elem(&map2, &key, &value, BPF_ANY);
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libout1 = var1 + var2 + var3.var3_1 + var3.var3_2 + var5 + var6;
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return libout1;
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}
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SEC("perf_event")
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int lib_perf_handler(struct pt_regs *ctx)
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{
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return 0;
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}
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char LICENSE[] SEC("license") = "GPL";
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