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// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
struct __bpf_stdout__ {
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
__type(key, int);
__type(value, __u32);
__uint(max_entries, __NR_CPUS__);
} __bpf_stdout__ SEC(".maps");
#define puts(from) \
({ const int __len = sizeof(from); \
char __from[sizeof(from)] = from; \
bpf_perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \
&__from, __len & (sizeof(from) - 1)); })
struct syscall_enter_args;
SEC("raw_syscalls:sys_enter")
int sys_enter(struct syscall_enter_args *args)
{
puts("Hello, world\n");
return 0;
}
char _license[] SEC("license") = "GPL";
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