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| author | Kui-Feng Lee <[email protected]> | 2022-05-10 20:59:22 +0000 |
|---|---|---|
| committer | Andrii Nakryiko <[email protected]> | 2022-05-11 04:58:40 +0000 |
| commit | 129b9c5ee2c18c3e36ec289140b5149f301118d1 (patch) | |
| tree | cc4553cafe1b604183d9aae42002f7bf1db58c08 /tools/lib/bpf/bpf.c | |
| parent | bpf, x86: Attach a cookie to fentry/fexit/fmod_ret/lsm. (diff) | |
| download | kernel-129b9c5ee2c18c3e36ec289140b5149f301118d1.tar.gz kernel-129b9c5ee2c18c3e36ec289140b5149f301118d1.zip | |
libbpf: Assign cookies to links in libbpf.
Add a cookie field to the attributes of bpf_link_create().
Add bpf_program__attach_trace_opts() to attach a cookie to a link.
Signed-off-by: Kui-Feng Lee <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/lib/bpf/bpf.c')
| -rw-r--r-- | tools/lib/bpf/bpf.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index a9d292c106c2..5660268e103f 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -863,6 +863,14 @@ int bpf_link_create(int prog_fd, int target_fd, if (!OPTS_ZEROED(opts, kprobe_multi)) return libbpf_err(-EINVAL); break; + case BPF_TRACE_FENTRY: + case BPF_TRACE_FEXIT: + case BPF_MODIFY_RETURN: + case BPF_LSM_MAC: + attr.link_create.tracing.cookie = OPTS_GET(opts, tracing.cookie, 0); + if (!OPTS_ZEROED(opts, tracing)) + return libbpf_err(-EINVAL); + break; default: if (!OPTS_ZEROED(opts, flags)) return libbpf_err(-EINVAL); |