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libbpf: Add path_fd to struct bpf_link_create_opts

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Adding the path_fd field to struct bpf_link_create_opts and passing it
through kernel attr interface.

Assisted-by: Codex:GPT-5.4
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260611114230.950379-5-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa
2026-06-11 13:42:27 +02:00
committed by Alexei Starovoitov
parent 26330a9226
commit da3a4c3ec7
2 changed files with 3 additions and 1 deletions
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1
tools/lib/bpf/bpf.c
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@@ -842,6 +842,7 @@ int bpf_link_create(int prog_fd, int target_fd,
attr.link_create.uprobe_multi.ref_ctr_offsets = ptr_to_u64(OPTS_GET(opts, uprobe_multi.ref_ctr_offsets, 0));
attr.link_create.uprobe_multi.cookies = ptr_to_u64(OPTS_GET(opts, uprobe_multi.cookies, 0));
attr.link_create.uprobe_multi.pid = OPTS_GET(opts, uprobe_multi.pid, 0);
attr.link_create.uprobe_multi.path_fd = OPTS_GET(opts, uprobe_multi.path_fd, 0);
if (!OPTS_ZEROED(opts, uprobe_multi))
return libbpf_err(-EINVAL);
break;

3
tools/lib/bpf/bpf.h
View File

@@ -444,6 +444,7 @@ struct bpf_link_create_opts {
const unsigned long *ref_ctr_offsets;
const __u64 *cookies;
__u32 pid;
__u32 path_fd;
} uprobe_multi;
struct {
__u64 cookie;
@@ -477,7 +478,7 @@ struct bpf_link_create_opts {
};
size_t :0;
};
#define bpf_link_create_opts__last_field uprobe_multi.pid
#define bpf_link_create_opts__last_field uprobe_multi.path_fd
LIBBPF_API int bpf_link_create(int prog_fd, int target_fd,
enum bpf_attach_type attach_type,