diff options
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_syscall_macro.c | 23 |
2 files changed, 29 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c b/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c index 8bc58bda500d..c381faaae741 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c +++ b/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c @@ -62,6 +62,12 @@ void test_bpf_syscall_macro(void) ASSERT_EQ(skel->bss->arg4_core, exp_arg4, "syscall_arg4_core_variant"); ASSERT_EQ(skel->bss->arg5_core, exp_arg5, "syscall_arg5_core_variant"); + ASSERT_EQ(skel->bss->option_syscall, exp_arg1, "BPF_KPROBE_SYSCALL_option"); + ASSERT_EQ(skel->bss->arg2_syscall, exp_arg2, "BPF_KPROBE_SYSCALL_arg2"); + ASSERT_EQ(skel->bss->arg3_syscall, exp_arg3, "BPF_KPROBE_SYSCALL_arg3"); + ASSERT_EQ(skel->bss->arg4_syscall, exp_arg4, "BPF_KPROBE_SYSCALL_arg4"); + ASSERT_EQ(skel->bss->arg5_syscall, exp_arg5, "BPF_KPROBE_SYSCALL_arg5"); + cleanup: bpf_syscall_macro__destroy(skel); } diff --git a/tools/testing/selftests/bpf/progs/bpf_syscall_macro.c b/tools/testing/selftests/bpf/progs/bpf_syscall_macro.c index 496e54d0ac22..05838ed9b89c 100644 --- a/tools/testing/selftests/bpf/progs/bpf_syscall_macro.c +++ b/tools/testing/selftests/bpf/progs/bpf_syscall_macro.c @@ -21,6 +21,12 @@ unsigned long arg4_core_cx = 0; unsigned long arg4_core = 0; unsigned long arg5_core = 0; +int option_syscall = 0; +unsigned long arg2_syscall = 0; +unsigned long arg3_syscall = 0; +unsigned long arg4_syscall = 0; +unsigned long arg5_syscall = 0; + const volatile pid_t filter_pid = 0; SEC("kprobe/" SYS_PREFIX "sys_prctl") @@ -58,4 +64,21 @@ int BPF_KPROBE(handle_sys_prctl) return 0; } +SEC("kprobe/" SYS_PREFIX "sys_prctl") +int BPF_KPROBE_SYSCALL(prctl_enter, int option, unsigned long arg2, + unsigned long arg3, unsigned long arg4, unsigned long arg5) +{ + pid_t pid = bpf_get_current_pid_tgid() >> 32; + + if (pid != filter_pid) + return 0; + + option_syscall = option; + arg2_syscall = arg2; + arg3_syscall = arg3; + arg4_syscall = arg4; + arg5_syscall = arg5; + return 0; +} + char _license[] SEC("license") = "GPL"; |