[PATCH] selftests/bpf: Add bpf_probe_read_str to bpf_helpers.h
From: Tushar Dave <hidden>
Date: 2018-02-28 00:35:29
Also in:
lkml
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds
Using bpf_probe_read_str() from samples/bpf causes compiler warning.
e.g.
warning: implicit declaration of function 'bpf_probe_read_str' is invalid in C99
[-Wimplicit-function-declaration]
num = bpf_probe_read_str(buf, sizeof(buf), ctx->di);
^
1 warning generated.
Add bpf_probe_read_str() to bpf_helpers.h so it can be used by
samples/bpf programs.
Signed-off-by: Tushar Dave <redacted>
---
tools/testing/selftests/bpf/bpf_helpers.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h
index dde2c11..65a266d 100644
--- a/tools/testing/selftests/bpf/bpf_helpers.h
+++ b/tools/testing/selftests/bpf/bpf_helpers.h@@ -65,6 +65,8 @@ static int (*bpf_xdp_adjust_head)(void *ctx, int offset) = (void *) BPF_FUNC_xdp_adjust_head; static int (*bpf_xdp_adjust_meta)(void *ctx, int offset) = (void *) BPF_FUNC_xdp_adjust_meta; +static int (*bpf_probe_read_str)(void *dst, int size, void *unsafe_ptr) = + (void *) BPF_FUNC_probe_read_str; static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval, int optlen) = (void *) BPF_FUNC_setsockopt;
--
1.9.1