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| author |   Sahid Orentino Ferdjaoui <sahid.ferdjaoui@industrialdiscipline.com> | 2022-11-20 11:26:32 +0000 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-11-20 16:17:46 -0800 |
| commit | d1313e01271d2d8f33d6c82f1afb77e820a3540d (patch) | |
| tree | e7a0281a2a91ead5a617012aa687c8cd0c72f06c /tools/bpf/bpftool/map.c | |
| parent | bpftool: fix error message when function can't register struct_ops (diff) | |
| download | wireguard-linux-d1313e01271d2d8f33d6c82f1afb77e820a3540d.tar.xz wireguard-linux-d1313e01271d2d8f33d6c82f1afb77e820a3540d.zip | |
bpftool: clean-up usage of libbpf_get_error()
bpftool is now totally compliant with libbpf 1.0 mode and is not
expected to be compiled with pre-1.0, let's clean-up the usage of
libbpf_get_error().
The changes stay aligned with returned errors always negative.
- In tools/bpf/bpftool/btf.c This fixes an uninitialized local
variable `err` in function do_dump() because it may now be returned
without having been set.
- This also removes the checks on NULL pointers before calling
btf__free() because that function already does the check.
Signed-off-by: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@industrialdiscipline.com>
Link: https://lore.kernel.org/r/20221120112515.38165-5-sahid.ferdjaoui@industrialdiscipline.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf/bpftool/map.c')
| -rw-r--r-- | tools/bpf/bpftool/map.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c index d884070a2314..eb362bd3d2c9 100644 --- a/tools/bpf/bpftool/map.c +++ b/tools/bpf/bpftool/map.c @@ -786,18 +786,18 @@ static int get_map_kv_btf(const struct bpf_map_info *info, struct btf **btf) if (info->btf_vmlinux_value_type_id) { if (!btf_vmlinux) { btf_vmlinux = libbpf_find_kernel_btf(); - err = libbpf_get_error(btf_vmlinux); - if (err) { + if (!btf_vmlinux) { p_err("failed to get kernel btf"); - return err; + return -errno; } } *btf = btf_vmlinux; } else if (info->btf_value_type_id) { *btf = btf__load_from_kernel_by_id(info->btf_id); - err = libbpf_get_error(*btf); - if (err) + if (!*btf) { + err = -errno; p_err("failed to get btf"); + } } else { *btf = NULL; } @@ -807,14 +807,13 @@ static int get_map_kv_btf(const struct bpf_map_info *info, struct btf **btf) static void free_map_kv_btf(struct btf *btf) { - if (!libbpf_get_error(btf) && btf != btf_vmlinux) + if (btf != btf_vmlinux) btf__free(btf); } static void free_btf_vmlinux(void) { - if (!libbpf_get_error(btf_vmlinux)) - btf__free(btf_vmlinux); + btf__free(btf_vmlinux); } static int |