diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_vmlinux.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_vmlinux.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_vmlinux.c b/tools/testing/selftests/bpf/progs/test_vmlinux.c new file mode 100644 index 000000000..e9dfa0313 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_vmlinux.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020 Facebook */ + +#include "vmlinux.h" +#include <asm/unistd.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include <bpf/bpf_core_read.h> + +#define MY_TV_NSEC 1337 + +bool tp_called = false; +bool raw_tp_called = false; +bool tp_btf_called = false; +bool kprobe_called = false; +bool fentry_called = false; + +SEC("tp/syscalls/sys_enter_nanosleep") +int handle__tp(struct trace_event_raw_sys_enter *args) +{ + struct __kernel_timespec *ts; + long tv_nsec; + + if (args->id != __NR_nanosleep) + return 0; + + ts = (void *)args->args[0]; + if (bpf_probe_read_user(&tv_nsec, sizeof(ts->tv_nsec), &ts->tv_nsec) || + tv_nsec != MY_TV_NSEC) + return 0; + + tp_called = true; + return 0; +} + +SEC("raw_tp/sys_enter") +int BPF_PROG(handle__raw_tp, struct pt_regs *regs, long id) +{ + struct __kernel_timespec *ts; + long tv_nsec; + + if (id != __NR_nanosleep) + return 0; + + ts = (void *)PT_REGS_PARM1_CORE(regs); + if (bpf_probe_read_user(&tv_nsec, sizeof(ts->tv_nsec), &ts->tv_nsec) || + tv_nsec != MY_TV_NSEC) + return 0; + + raw_tp_called = true; + return 0; +} + +SEC("tp_btf/sys_enter") +int BPF_PROG(handle__tp_btf, struct pt_regs *regs, long id) +{ + struct __kernel_timespec *ts; + long tv_nsec; + + if (id != __NR_nanosleep) + return 0; + + ts = (void *)PT_REGS_PARM1_CORE(regs); + if (bpf_probe_read_user(&tv_nsec, sizeof(ts->tv_nsec), &ts->tv_nsec) || + tv_nsec != MY_TV_NSEC) + return 0; + + tp_btf_called = true; + return 0; +} + +SEC("kprobe/hrtimer_start_range_ns") +int BPF_KPROBE(handle__kprobe, struct hrtimer *timer, ktime_t tim, u64 delta_ns, + const enum hrtimer_mode mode) +{ + if (tim == MY_TV_NSEC) + kprobe_called = true; + return 0; +} + +SEC("fentry/hrtimer_start_range_ns") +int BPF_PROG(handle__fentry, struct hrtimer *timer, ktime_t tim, u64 delta_ns, + const enum hrtimer_mode mode) +{ + if (tim == MY_TV_NSEC) + fentry_called = true; + return 0; +} + +char _license[] SEC("license") = "GPL"; |