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libbpf: Constify few bpf_program getters 

bpf_program__get_type() and bpf_program__get_expected_attach_type() shouldn't
modify given bpf_program, so mark input parameter as const struct bpf_program.
This eliminates unnecessary compilation warnings or explicit casts in user
programs.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210324172941.2609884-1-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-03-24 10:29:41 -07:00 committed by Daniel Borkmann
parent 5d90349387
commit a46410d5e4
2 changed files with 4 additions and 4 deletions
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4
tools/lib/bpf/libbpf.c
View File

@ -8458,7 +8458,7 @@ int bpf_program__nth_fd(const struct bpf_program *prog, int n)
return fd;
}
enum bpf_prog_type bpf_program__get_type(struct bpf_program *prog)
enum bpf_prog_type bpf_program__get_type(const struct bpf_program *prog)
{
return prog->type;
}
@ -8503,7 +8503,7 @@ BPF_PROG_TYPE_FNS(extension, BPF_PROG_TYPE_EXT);
BPF_PROG_TYPE_FNS(sk_lookup, BPF_PROG_TYPE_SK_LOOKUP);
enum bpf_attach_type
bpf_program__get_expected_attach_type(struct bpf_program *prog)
bpf_program__get_expected_attach_type(const struct bpf_program *prog)
{
return prog->expected_attach_type;
}

4
tools/lib/bpf/libbpf.h
View File

@ -361,12 +361,12 @@ LIBBPF_API int bpf_program__set_struct_ops(struct bpf_program *prog);
LIBBPF_API int bpf_program__set_extension(struct bpf_program *prog);
LIBBPF_API int bpf_program__set_sk_lookup(struct bpf_program *prog);
LIBBPF_API enum bpf_prog_type bpf_program__get_type(struct bpf_program *prog);
LIBBPF_API enum bpf_prog_type bpf_program__get_type(const struct bpf_program *prog);
LIBBPF_API void bpf_program__set_type(struct bpf_program *prog,
enum bpf_prog_type type);
LIBBPF_API enum bpf_attach_type
bpf_program__get_expected_attach_type(struct bpf_program *prog);
bpf_program__get_expected_attach_type(const struct bpf_program *prog);
LIBBPF_API void
bpf_program__set_expected_attach_type(struct bpf_program *prog,
enum bpf_attach_type type);