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path: root/tools/bpf/bpftool/btf_dumper.c
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Diffstat (limited to 'tools/bpf/bpftool/btf_dumper.c')
-rw-r--r--tools/bpf/bpftool/btf_dumper.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c
index e63bce0755eb..8cafb9b31467 100644
--- a/tools/bpf/bpftool/btf_dumper.c
+++ b/tools/bpf/bpftool/btf_dumper.c
@@ -309,6 +309,48 @@ static int btf_dumper_struct(const struct btf_dumper *d, __u32 type_id,
return ret;
}
+static int btf_dumper_var(const struct btf_dumper *d, __u32 type_id,
+ __u8 bit_offset, const void *data)
+{
+ const struct btf_type *t = btf__type_by_id(d->btf, type_id);
+ int ret;
+
+ jsonw_start_object(d->jw);
+ jsonw_name(d->jw, btf__name_by_offset(d->btf, t->name_off));
+ ret = btf_dumper_do_type(d, t->type, bit_offset, data);
+ jsonw_end_object(d->jw);
+
+ return ret;
+}
+
+static int btf_dumper_datasec(const struct btf_dumper *d, __u32 type_id,
+ const void *data)
+{
+ struct btf_var_secinfo *vsi;
+ const struct btf_type *t;
+ int ret = 0, i, vlen;
+
+ t = btf__type_by_id(d->btf, type_id);
+ if (!t)
+ return -EINVAL;
+
+ vlen = BTF_INFO_VLEN(t->info);
+ vsi = (struct btf_var_secinfo *)(t + 1);
+
+ jsonw_start_object(d->jw);
+ jsonw_name(d->jw, btf__name_by_offset(d->btf, t->name_off));
+ jsonw_start_array(d->jw);
+ for (i = 0; i < vlen; i++) {
+ ret = btf_dumper_do_type(d, vsi[i].type, 0, data + vsi[i].offset);
+ if (ret)
+ break;
+ }
+ jsonw_end_array(d->jw);
+ jsonw_end_object(d->jw);
+
+ return ret;
+}
+
static int btf_dumper_do_type(const struct btf_dumper *d, __u32 type_id,
__u8 bit_offset, const void *data)
{
@@ -341,6 +383,10 @@ static int btf_dumper_do_type(const struct btf_dumper *d, __u32 type_id,
case BTF_KIND_CONST:
case BTF_KIND_RESTRICT:
return btf_dumper_modifier(d, type_id, bit_offset, data);
+ case BTF_KIND_VAR:
+ return btf_dumper_var(d, type_id, bit_offset, data);
+ case BTF_KIND_DATASEC:
+ return btf_dumper_datasec(d, type_id, data);
default:
jsonw_printf(d->jw, "(unsupported-kind");
return -EINVAL;
@@ -377,6 +423,7 @@ static int __btf_dumper_type_only(const struct btf *btf, __u32 type_id,
{
const struct btf_type *proto_type;
const struct btf_array *array;
+ const struct btf_var *var;
const struct btf_type *t;
if (!type_id) {
@@ -440,6 +487,18 @@ static int __btf_dumper_type_only(const struct btf *btf, __u32 type_id,
if (pos == -1)
return -1;
break;
+ case BTF_KIND_VAR:
+ var = (struct btf_var *)(t + 1);
+ if (var->linkage == BTF_VAR_STATIC)
+ BTF_PRINT_ARG("static ");
+ BTF_PRINT_TYPE(t->type);
+ BTF_PRINT_ARG(" %s",
+ btf__name_by_offset(btf, t->name_off));
+ break;
+ case BTF_KIND_DATASEC:
+ BTF_PRINT_ARG("section (\"%s\") ",
+ btf__name_by_offset(btf, t->name_off));
+ break;
case BTF_KIND_UNKN:
default:
return -1;