90a039fd19
tests load/attach bpf prog with maps, perfbuf and ringbuf, pinning them. Then effective caps are dropped and we verify we can - pick up the pin - create ringbuf/perfbuf - get ringbuf/perfbuf events, carry out map update, lookup and delete - create a link Negative testing also ensures - BPF prog load fails - BPF map create fails - get fd by id fails - get next id fails - query fails - BTF load fails Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/r/1652970334-30510-3-git-send-email-alan.maguire@oracle.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2022, Oracle and/or its affiliates. */
|
|
|
|
#include "vmlinux.h"
|
|
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
#include "bpf_misc.h"
|
|
|
|
__u32 perfbuf_val = 0;
|
|
__u32 ringbuf_val = 0;
|
|
|
|
int test_pid;
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_ARRAY);
|
|
__uint(max_entries, 1);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} array SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
|
|
__uint(max_entries, 1);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} percpu_array SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_HASH);
|
|
__uint(max_entries, 1);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} hash SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PERCPU_HASH);
|
|
__uint(max_entries, 1);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} percpu_hash SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} perfbuf SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_RINGBUF);
|
|
__uint(max_entries, 1 << 12);
|
|
} ringbuf SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
|
|
__uint(max_entries, 1);
|
|
__uint(key_size, sizeof(__u32));
|
|
__uint(value_size, sizeof(__u32));
|
|
} prog_array SEC(".maps");
|
|
|
|
SEC("fentry/" SYS_PREFIX "sys_nanosleep")
|
|
int sys_nanosleep_enter(void *ctx)
|
|
{
|
|
int cur_pid;
|
|
|
|
cur_pid = bpf_get_current_pid_tgid() >> 32;
|
|
|
|
if (cur_pid != test_pid)
|
|
return 0;
|
|
|
|
bpf_perf_event_output(ctx, &perfbuf, BPF_F_CURRENT_CPU, &perfbuf_val, sizeof(perfbuf_val));
|
|
bpf_ringbuf_output(&ringbuf, &ringbuf_val, sizeof(ringbuf_val), 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
SEC("perf_event")
|
|
int handle_perf_event(void *ctx)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|