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#include "common.h"
char __license[] __section("license") = "Dual MIT/GPL";
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 2);
__type(key, uint32_t);
__type(value, uint64_t);
} array_map __section(".maps");
// Non-weak ksyms must be present in the kernel.
extern void bpf_init __ksym;
// Weak ksyms are potentially zero at runtime.
extern void bpf_trace_run1 __ksym __weak;
__section("socket") int ksym_test() {
uint32_t i;
uint64_t val;
i = 0;
val = (uint64_t)&bpf_init;
bpf_map_update_elem(&array_map, &i, &val, 0);
i = 1;
val = (uint64_t)&bpf_trace_run1;
bpf_map_update_elem(&array_map, &i, &val, 0);
return 0;
}
extern void non_existing_symbol __ksym __weak;
__section("socket") int ksym_missing_test() {
if (&non_existing_symbol == 0) {
return 1;
}
return 0;
}
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