diff options
| author |   Dave Marchevsky <davemarchevsky@fb.com> | 2021-10-11 01:20:28 -0700 |
|---|---|---|
| committer |   Andrii Nakryiko <andrii@kernel.org> | 2021-10-20 10:35:49 -0700 |
| commit | ebc7b50a3849d73665013573cf3c09f27fb14fde (patch) | |
| tree | b8f515cd70b5edbcfa96d1098f0971df7aa7661d /tools/lib/bpf/libbpf.c | |
| parent | bpf: Silence Coverity warning for find_kfunc_desc_btf (diff) | |
| download | linux-dev-ebc7b50a3849d73665013573cf3c09f27fb14fde.tar.xz linux-dev-ebc7b50a3849d73665013573cf3c09f27fb14fde.zip | |
libbpf: Migrate internal use of bpf_program__get_prog_info_linear
In preparation for bpf_program__get_prog_info_linear deprecation, move
the single use in libbpf to call bpf_obj_get_info_by_fd directly.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211011082031.4148337-2-davemarchevsky@fb.com
Diffstat (limited to 'tools/lib/bpf/libbpf.c')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 63d738654ff6..760c7e346603 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8461,28 +8461,27 @@ int libbpf_find_vmlinux_btf_id(const char *name, static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd) { - struct bpf_prog_info_linear *info_linear; - struct bpf_prog_info *info; + struct bpf_prog_info info = {}; + __u32 info_len = sizeof(info); struct btf *btf; int err; - info_linear = bpf_program__get_prog_info_linear(attach_prog_fd, 0); - err = libbpf_get_error(info_linear); + err = bpf_obj_get_info_by_fd(attach_prog_fd, &info, &info_len); if (err) { - pr_warn("failed get_prog_info_linear for FD %d\n", - attach_prog_fd); + pr_warn("failed bpf_obj_get_info_by_fd for FD %d: %d\n", + attach_prog_fd, err); return err; } err = -EINVAL; - info = &info_linear->info; - if (!info->btf_id) { + if (!info.btf_id) { pr_warn("The target program doesn't have BTF\n"); goto out; } - btf = btf__load_from_kernel_by_id(info->btf_id); - if (libbpf_get_error(btf)) { - pr_warn("Failed to get BTF of the program\n"); + btf = btf__load_from_kernel_by_id(info.btf_id); + err = libbpf_get_error(btf); + if (err) { + pr_warn("Failed to get BTF %d of the program: %d\n", info.btf_id, err); goto out; } err = btf__find_by_name_kind(btf, name, BTF_KIND_FUNC); @@ -8492,7 +8491,6 @@ static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd) goto out; } out: - free(info_linear); return err; } |