diff options
| author | Yafang Shao <laoar.shao@gmail.com> | 2023-07-13 02:56:42 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-13 16:24:29 -0700 |
| commit | 1cd0e7715cad848017e48033772791e8b9ee2932 (patch) | |
| tree | 47417274ea2ad5044d475add990e4dcec816637f /tools/testing/selftests/bpf/progs/test_ptr_untrusted.c | |
| parent | 33937607efa050d9e237e0c4ac4ada02d961c466 (diff) | |
selftests/bpf: Add selftest for PTR_UNTRUSTED
Add a new selftest to check the PTR_UNTRUSTED condition. Below is the
result,
#160 ptr_untrusted:OK
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230713025642.27477-5-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_ptr_untrusted.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_ptr_untrusted.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_ptr_untrusted.c b/tools/testing/selftests/bpf/progs/test_ptr_untrusted.c new file mode 100644 index 000000000000..4bdd65b5aa2d --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_ptr_untrusted.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2023 Yafang Shao <laoar.shao@gmail.com> */ + +#include "vmlinux.h" +#include <bpf/bpf_tracing.h> + +char tp_name[128]; + +SEC("lsm/bpf") +int BPF_PROG(lsm_run, int cmd, union bpf_attr *attr, unsigned int size) +{ + switch (cmd) { + case BPF_RAW_TRACEPOINT_OPEN: + bpf_probe_read_user_str(tp_name, sizeof(tp_name) - 1, + (void *)attr->raw_tracepoint.name); + break; + default: + break; + } + return 0; +} + +SEC("raw_tracepoint") +int BPF_PROG(raw_tp_run) +{ + return 0; +} + +char _license[] SEC("license") = "GPL"; |