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Diffstat (limited to 'tools/bpf/bpftool/gen.c')
-rw-r--r--tools/bpf/bpftool/gen.c654
1 files changed, 630 insertions, 24 deletions
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index eacfc6a2060d..f8c1413523a3 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -14,6 +14,7 @@
#include <unistd.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
+#include <bpf/libbpf_internal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
@@ -472,7 +473,7 @@ static void codegen_destroy(struct bpf_object *obj, const char *obj_name)
continue;
if (bpf_map__is_internal(map) &&
(bpf_map__map_flags(map) & BPF_F_MMAPABLE))
- printf("\tmunmap(skel->%1$s, %2$zd);\n",
+ printf("\tskel_free_map_data(skel->%1$s, skel->maps.%1$s.initial_value, %2$zd);\n",
ident, bpf_map_mmap_sz(map));
codegen("\
\n\
@@ -481,7 +482,7 @@ static void codegen_destroy(struct bpf_object *obj, const char *obj_name)
}
codegen("\
\n\
- free(skel); \n\
+ skel_free(skel); \n\
} \n\
",
obj_name);
@@ -525,7 +526,7 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
{ \n\
struct %1$s *skel; \n\
\n\
- skel = calloc(sizeof(*skel), 1); \n\
+ skel = skel_alloc(sizeof(*skel)); \n\
if (!skel) \n\
goto cleanup; \n\
skel->ctx.sz = (void *)&skel->links - (void *)skel; \n\
@@ -543,19 +544,18 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
continue;
codegen("\
- \n\
- skel->%1$s = \n\
- mmap(NULL, %2$zd, PROT_READ | PROT_WRITE,\n\
- MAP_SHARED | MAP_ANONYMOUS, -1, 0); \n\
- if (skel->%1$s == (void *) -1) \n\
- goto cleanup; \n\
- memcpy(skel->%1$s, (void *)\"\\ \n\
- ", ident, bpf_map_mmap_sz(map));
+ \n\
+ skel->%1$s = skel_prep_map_data((void *)\"\\ \n\
+ ", ident);
mmap_data = bpf_map__initial_value(map, &mmap_size);
print_hex(mmap_data, mmap_size);
- printf("\", %2$zd);\n"
- "\tskel->maps.%1$s.initial_value = (__u64)(long)skel->%1$s;\n",
- ident, mmap_size);
+ codegen("\
+ \n\
+ \", %1$zd, %2$zd); \n\
+ if (!skel->%3$s) \n\
+ goto cleanup; \n\
+ skel->maps.%3$s.initial_value = (__u64) (long) skel->%3$s;\n\
+ ", bpf_map_mmap_sz(map), mmap_size, ident);
}
codegen("\
\n\
@@ -611,9 +611,13 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
else
mmap_flags = "PROT_READ | PROT_WRITE";
- printf("\tskel->%1$s =\n"
- "\t\tmmap(skel->%1$s, %2$zd, %3$s, MAP_SHARED | MAP_FIXED,\n"
- "\t\t\tskel->maps.%1$s.map_fd, 0);\n",
+ codegen("\
+ \n\
+ skel->%1$s = skel_finalize_map_data(&skel->maps.%1$s.initial_value, \n\
+ %2$zd, %3$s, skel->maps.%1$s.map_fd);\n\
+ if (!skel->%1$s) \n\
+ return -ENOMEM; \n\
+ ",
ident, bpf_map_mmap_sz(map), mmap_flags);
}
codegen("\
@@ -751,8 +755,6 @@ static int do_skeleton(int argc, char **argv)
#ifndef %2$s \n\
#define %2$s \n\
\n\
- #include <stdlib.h> \n\
- #include <bpf/bpf.h> \n\
#include <bpf/skel_internal.h> \n\
\n\
struct %1$s { \n\
@@ -830,6 +832,16 @@ static int do_skeleton(int argc, char **argv)
codegen("\
\n\
+ \n\
+ #ifdef __cplusplus \n\
+ static inline struct %1$s *open(const struct bpf_object_open_opts *opts = nullptr);\n\
+ static inline struct %1$s *open_and_load(); \n\
+ static inline int load(struct %1$s *skel); \n\
+ static inline int attach(struct %1$s *skel); \n\
+ static inline void detach(struct %1$s *skel); \n\
+ static inline void destroy(struct %1$s *skel); \n\
+ static inline const void *elf_bytes(size_t *sz); \n\
+ #endif /* __cplusplus */ \n\
}; \n\
\n\
static void \n\
@@ -1024,9 +1036,19 @@ static int do_skeleton(int argc, char **argv)
\"; \n\
} \n\
\n\
- #endif /* %s */ \n\
+ #ifdef __cplusplus \n\
+ struct %1$s *%1$s::open(const struct bpf_object_open_opts *opts) { return %1$s__open_opts(opts); }\n\
+ struct %1$s *%1$s::open_and_load() { return %1$s__open_and_load(); } \n\
+ int %1$s::load(struct %1$s *skel) { return %1$s__load(skel); } \n\
+ int %1$s::attach(struct %1$s *skel) { return %1$s__attach(skel); } \n\
+ void %1$s::detach(struct %1$s *skel) { %1$s__detach(skel); } \n\
+ void %1$s::destroy(struct %1$s *skel) { %1$s__destroy(skel); } \n\
+ const void *%1$s::elf_bytes(size_t *sz) { return %1$s__elf_bytes(sz); } \n\
+ #endif /* __cplusplus */ \n\
+ \n\
+ #endif /* %2$s */ \n\
",
- header_guard);
+ obj_name, header_guard);
err = 0;
out:
bpf_object__close(obj);
@@ -1087,6 +1109,7 @@ static int do_help(int argc, char **argv)
fprintf(stderr,
"Usage: %1$s %2$s object OUTPUT_FILE INPUT_FILE [INPUT_FILE...]\n"
" %1$s %2$s skeleton FILE [name OBJECT_NAME]\n"
+ " %1$s %2$s min_core_btf INPUT OUTPUT OBJECT [OBJECT...]\n"
" %1$s %2$s help\n"
"\n"
" " HELP_SPEC_OPTIONS " |\n"
@@ -1097,10 +1120,593 @@ static int do_help(int argc, char **argv)
return 0;
}
+static int btf_save_raw(const struct btf *btf, const char *path)
+{
+ const void *data;
+ FILE *f = NULL;
+ __u32 data_sz;
+ int err = 0;
+
+ data = btf__raw_data(btf, &data_sz);
+ if (!data)
+ return -ENOMEM;
+
+ f = fopen(path, "wb");
+ if (!f)
+ return -errno;
+
+ if (fwrite(data, 1, data_sz, f) != data_sz)
+ err = -errno;
+
+ fclose(f);
+ return err;
+}
+
+struct btfgen_info {
+ struct btf *src_btf;
+ struct btf *marked_btf; /* btf structure used to mark used types */
+};
+
+static size_t btfgen_hash_fn(const void *key, void *ctx)
+{
+ return (size_t)key;
+}
+
+static bool btfgen_equal_fn(const void *k1, const void *k2, void *ctx)
+{
+ return k1 == k2;
+}
+
+static void *u32_as_hash_key(__u32 x)
+{
+ return (void *)(uintptr_t)x;
+}
+
+static void btfgen_free_info(struct btfgen_info *info)
+{
+ if (!info)
+ return;
+
+ btf__free(info->src_btf);
+ btf__free(info->marked_btf);
+
+ free(info);
+}
+
+static struct btfgen_info *
+btfgen_new_info(const char *targ_btf_path)
+{
+ struct btfgen_info *info;
+ int err;
+
+ info = calloc(1, sizeof(*info));
+ if (!info)
+ return NULL;
+
+ info->src_btf = btf__parse(targ_btf_path, NULL);
+ if (!info->src_btf) {
+ err = -errno;
+ p_err("failed parsing '%s' BTF file: %s", targ_btf_path, strerror(errno));
+ goto err_out;
+ }
+
+ info->marked_btf = btf__parse(targ_btf_path, NULL);
+ if (!info->marked_btf) {
+ err = -errno;
+ p_err("failed parsing '%s' BTF file: %s", targ_btf_path, strerror(errno));
+ goto err_out;
+ }
+
+ return info;
+
+err_out:
+ btfgen_free_info(info);
+ errno = -err;
+ return NULL;
+}
+
+#define MARKED UINT32_MAX
+
+static void btfgen_mark_member(struct btfgen_info *info, int type_id, int idx)
+{
+ const struct btf_type *t = btf__type_by_id(info->marked_btf, type_id);
+ struct btf_member *m = btf_members(t) + idx;
+
+ m->name_off = MARKED;
+}
+
+static int
+btfgen_mark_type(struct btfgen_info *info, unsigned int type_id, bool follow_pointers)
+{
+ const struct btf_type *btf_type = btf__type_by_id(info->src_btf, type_id);
+ struct btf_type *cloned_type;
+ struct btf_param *param;
+ struct btf_array *array;
+ int err, i;
+
+ if (type_id == 0)
+ return 0;
+
+ /* mark type on cloned BTF as used */
+ cloned_type = (struct btf_type *) btf__type_by_id(info->marked_btf, type_id);
+ cloned_type->name_off = MARKED;
+
+ /* recursively mark other types needed by it */
+ switch (btf_kind(btf_type)) {
+ case BTF_KIND_UNKN:
+ case BTF_KIND_INT:
+ case BTF_KIND_FLOAT:
+ case BTF_KIND_ENUM:
+ case BTF_KIND_STRUCT:
+ case BTF_KIND_UNION:
+ break;
+ case BTF_KIND_PTR:
+ if (follow_pointers) {
+ err = btfgen_mark_type(info, btf_type->type, follow_pointers);
+ if (err)
+ return err;
+ }
+ break;
+ case BTF_KIND_CONST:
+ case BTF_KIND_VOLATILE:
+ case BTF_KIND_TYPEDEF:
+ err = btfgen_mark_type(info, btf_type->type, follow_pointers);
+ if (err)
+ return err;
+ break;
+ case BTF_KIND_ARRAY:
+ array = btf_array(btf_type);
+
+ /* mark array type */
+ err = btfgen_mark_type(info, array->type, follow_pointers);
+ /* mark array's index type */
+ err = err ? : btfgen_mark_type(info, array->index_type, follow_pointers);
+ if (err)
+ return err;
+ break;
+ case BTF_KIND_FUNC_PROTO:
+ /* mark ret type */
+ err = btfgen_mark_type(info, btf_type->type, follow_pointers);
+ if (err)
+ return err;
+
+ /* mark parameters types */
+ param = btf_params(btf_type);
+ for (i = 0; i < btf_vlen(btf_type); i++) {
+ err = btfgen_mark_type(info, param->type, follow_pointers);
+ if (err)
+ return err;
+ param++;
+ }
+ break;
+ /* tells if some other type needs to be handled */
+ default:
+ p_err("unsupported kind: %s (%d)", btf_kind_str(btf_type), type_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int btfgen_record_field_relo(struct btfgen_info *info, struct bpf_core_spec *targ_spec)
+{
+ struct btf *btf = info->src_btf;
+ const struct btf_type *btf_type;
+ struct btf_member *btf_member;
+ struct btf_array *array;
+ unsigned int type_id = targ_spec->root_type_id;
+ int idx, err;
+
+ /* mark root type */
+ btf_type = btf__type_by_id(btf, type_id);
+ err = btfgen_mark_type(info, type_id, false);
+ if (err)
+ return err;
+
+ /* mark types for complex types (arrays, unions, structures) */
+ for (int i = 1; i < targ_spec->raw_len; i++) {
+ /* skip typedefs and mods */
+ while (btf_is_mod(btf_type) || btf_is_typedef(btf_type)) {
+ type_id = btf_type->type;
+ btf_type = btf__type_by_id(btf, type_id);
+ }
+
+ switch (btf_kind(btf_type)) {
+ case BTF_KIND_STRUCT:
+ case BTF_KIND_UNION:
+ idx = targ_spec->raw_spec[i];
+ btf_member = btf_members(btf_type) + idx;
+
+ /* mark member */
+ btfgen_mark_member(info, type_id, idx);
+
+ /* mark member's type */
+ type_id = btf_member->type;
+ btf_type = btf__type_by_id(btf, type_id);
+ err = btfgen_mark_type(info, type_id, false);
+ if (err)
+ return err;
+ break;
+ case BTF_KIND_ARRAY:
+ array = btf_array(btf_type);
+ type_id = array->type;
+ btf_type = btf__type_by_id(btf, type_id);
+ break;
+ default:
+ p_err("unsupported kind: %s (%d)",
+ btf_kind_str(btf_type), btf_type->type);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int btfgen_record_type_relo(struct btfgen_info *info, struct bpf_core_spec *targ_spec)
+{
+ return btfgen_mark_type(info, targ_spec->root_type_id, true);
+}
+
+static int btfgen_record_enumval_relo(struct btfgen_info *info, struct bpf_core_spec *targ_spec)
+{
+ return btfgen_mark_type(info, targ_spec->root_type_id, false);
+}
+
+static int btfgen_record_reloc(struct btfgen_info *info, struct bpf_core_spec *res)
+{
+ switch (res->relo_kind) {
+ case BPF_CORE_FIELD_BYTE_OFFSET:
+ case BPF_CORE_FIELD_BYTE_SIZE:
+ case BPF_CORE_FIELD_EXISTS:
+ case BPF_CORE_FIELD_SIGNED:
+ case BPF_CORE_FIELD_LSHIFT_U64:
+ case BPF_CORE_FIELD_RSHIFT_U64:
+ return btfgen_record_field_relo(info, res);
+ case BPF_CORE_TYPE_ID_LOCAL: /* BPF_CORE_TYPE_ID_LOCAL doesn't require kernel BTF */
+ return 0;
+ case BPF_CORE_TYPE_ID_TARGET:
+ case BPF_CORE_TYPE_EXISTS:
+ case BPF_CORE_TYPE_SIZE:
+ return btfgen_record_type_relo(info, res);
+ case BPF_CORE_ENUMVAL_EXISTS:
+ case BPF_CORE_ENUMVAL_VALUE:
+ return btfgen_record_enumval_relo(info, res);
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct bpf_core_cand_list *
+btfgen_find_cands(const struct btf *local_btf, const struct btf *targ_btf, __u32 local_id)
+{
+ const struct btf_type *local_type;
+ struct bpf_core_cand_list *cands = NULL;
+ struct bpf_core_cand local_cand = {};
+ size_t local_essent_len;
+ const char *local_name;
+ int err;
+
+ local_cand.btf = local_btf;
+ local_cand.id = local_id;
+
+ local_type = btf__type_by_id(local_btf, local_id);
+ if (!local_type) {
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ local_name = btf__name_by_offset(local_btf, local_type->name_off);
+ if (!local_name) {
+ err = -EINVAL;
+ goto err_out;
+ }
+ local_essent_len = bpf_core_essential_name_len(local_name);
+
+ cands = calloc(1, sizeof(*cands));
+ if (!cands)
+ return NULL;
+
+ err = bpf_core_add_cands(&local_cand, local_essent_len, targ_btf, "vmlinux", 1, cands);
+ if (err)
+ goto err_out;
+
+ return cands;
+
+err_out:
+ bpf_core_free_cands(cands);
+ errno = -err;
+ return NULL;
+}
+
+/* Record relocation information for a single BPF object */
+static int btfgen_record_obj(struct btfgen_info *info, const char *obj_path)
+{
+ const struct btf_ext_info_sec *sec;
+ const struct bpf_core_relo *relo;
+ const struct btf_ext_info *seg;
+ struct hashmap_entry *entry;
+ struct hashmap *cand_cache = NULL;
+ struct btf_ext *btf_ext = NULL;
+ unsigned int relo_idx;
+ struct btf *btf = NULL;
+ size_t i;
+ int err;
+
+ btf = btf__parse(obj_path, &btf_ext);
+ if (!btf) {
+ err = -errno;
+ p_err("failed to parse BPF object '%s': %s", obj_path, strerror(errno));
+ return err;
+ }
+
+ if (!btf_ext) {
+ p_err("failed to parse BPF object '%s': section %s not found",
+ obj_path, BTF_EXT_ELF_SEC);
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (btf_ext->core_relo_info.len == 0) {
+ err = 0;
+ goto out;
+ }
+
+ cand_cache = hashmap__new(btfgen_hash_fn, btfgen_equal_fn, NULL);
+ if (IS_ERR(cand_cache)) {
+ err = PTR_ERR(cand_cache);
+ goto out;
+ }
+
+ seg = &btf_ext->core_relo_info;
+ for_each_btf_ext_sec(seg, sec) {
+ for_each_btf_ext_rec(seg, sec, relo_idx, relo) {
+ struct bpf_core_spec specs_scratch[3] = {};
+ struct bpf_core_relo_res targ_res = {};
+ struct bpf_core_cand_list *cands = NULL;
+ const void *type_key = u32_as_hash_key(relo->type_id);
+ const char *sec_name = btf__name_by_offset(btf, sec->sec_name_off);
+
+ if (relo->kind != BPF_CORE_TYPE_ID_LOCAL &&
+ !hashmap__find(cand_cache, type_key, (void **)&cands)) {
+ cands = btfgen_find_cands(btf, info->src_btf, relo->type_id);
+ if (!cands) {
+ err = -errno;
+ goto out;
+ }
+
+ err = hashmap__set(cand_cache, type_key, cands, NULL, NULL);
+ if (err)
+ goto out;
+ }
+
+ err = bpf_core_calc_relo_insn(sec_name, relo, relo_idx, btf, cands,
+ specs_scratch, &targ_res);
+ if (err)
+ goto out;
+
+ /* specs_scratch[2] is the target spec */
+ err = btfgen_record_reloc(info, &specs_scratch[2]);
+ if (err)
+ goto out;
+ }
+ }
+
+out:
+ btf__free(btf);
+ btf_ext__free(btf_ext);
+
+ if (!IS_ERR_OR_NULL(cand_cache)) {
+ hashmap__for_each_entry(cand_cache, entry, i) {
+ bpf_core_free_cands(entry->value);
+ }
+ hashmap__free(cand_cache);
+ }
+
+ return err;
+}
+
+static int btfgen_remap_id(__u32 *type_id, void *ctx)
+{
+ unsigned int *ids = ctx;
+
+ *type_id = ids[*type_id];
+
+ return 0;
+}
+
+/* Generate BTF from relocation information previously recorded */
+static struct btf *btfgen_get_btf(struct btfgen_info *info)
+{
+ struct btf *btf_new = NULL;
+ unsigned int *ids = NULL;
+ unsigned int i, n = btf__type_cnt(info->marked_btf);
+ int err = 0;
+
+ btf_new = btf__new_empty();
+ if (!btf_new) {
+ err = -errno;
+ goto err_out;
+ }
+
+ ids = calloc(n, sizeof(*ids));
+ if (!ids) {
+ err = -errno;
+ goto err_out;
+ }
+
+ /* first pass: add all marked types to btf_new and add their new ids to the ids map */
+ for (i = 1; i < n; i++) {
+ const struct btf_type *cloned_type, *type;
+ const char *name;
+ int new_id;
+
+ cloned_type = btf__type_by_id(info->marked_btf, i);
+
+ if (cloned_type->name_off != MARKED)
+ continue;
+
+ type = btf__type_by_id(info->src_btf, i);
+
+ /* add members for struct and union */
+ if (btf_is_composite(type)) {
+ struct btf_member *cloned_m, *m;
+ unsigned short vlen;
+ int idx_src;
+
+ name = btf__str_by_offset(info->src_btf, type->name_off);
+
+ if (btf_is_struct(type))
+ err = btf__add_struct(btf_new, name, type->size);
+ else
+ err = btf__add_union(btf_new, name, type->size);
+
+ if (err < 0)
+ goto err_out;
+ new_id = err;
+
+ cloned_m = btf_members(cloned_type);
+ m = btf_members(type);
+ vlen = btf_vlen(cloned_type);
+ for (idx_src = 0; idx_src < vlen; idx_src++, cloned_m++, m++) {
+ /* add only members that are marked as used */
+ if (cloned_m->name_off != MARKED)
+ continue;
+
+ name = btf__str_by_offset(info->src_btf, m->name_off);
+ err = btf__add_field(btf_new, name, m->type,
+ btf_member_bit_offset(cloned_type, idx_src),
+ btf_member_bitfield_size(cloned_type, idx_src));
+ if (err < 0)
+ goto err_out;
+ }
+ } else {
+ err = btf__add_type(btf_new, info->src_btf, type);
+ if (err < 0)
+ goto err_out;
+ new_id = err;
+ }
+
+ /* add ID mapping */
+ ids[i] = new_id;
+ }
+
+ /* second pass: fix up type ids */
+ for (i = 1; i < btf__type_cnt(btf_new); i++) {
+ struct btf_type *btf_type = (struct btf_type *) btf__type_by_id(btf_new, i);
+
+ err = btf_type_visit_type_ids(btf_type, btfgen_remap_id, ids);
+ if (err)
+ goto err_out;
+ }
+
+ free(ids);
+ return btf_new;
+
+err_out:
+ btf__free(btf_new);
+ free(ids);
+ errno = -err;
+ return NULL;
+}
+
+/* Create minimized BTF file for a set of BPF objects.
+ *
+ * The BTFGen algorithm is divided in two main parts: (1) collect the
+ * BTF types that are involved in relocations and (2) generate the BTF
+ * object using the collected types.
+ *
+ * In order to collect the types involved in the relocations, we parse
+ * the BTF and BTF.ext sections of the BPF objects and use
+ * bpf_core_calc_relo_insn() to get the target specification, this
+ * indicates how the types and fields are used in a relocation.
+ *
+ * Types are recorded in different ways according to the kind of the
+ * relocation. For field-based relocations only the members that are
+ * actually used are saved in order to reduce the size of the generated
+ * BTF file. For type-based relocations empty struct / unions are
+ * generated and for enum-based relocations the whole type is saved.
+ *
+ * The second part of the algorithm generates the BTF object. It creates
+ * an empty BTF object and fills it with the types recorded in the
+ * previous step. This function takes care of only adding the structure
+ * and union members that were marked as used and it also fixes up the
+ * type IDs on the generated BTF object.
+ */
+static int minimize_btf(const char *src_btf, const char *dst_btf, const char *objspaths[])
+{
+ struct btfgen_info *info;
+ struct btf *btf_new = NULL;
+ int err, i;
+
+ info = btfgen_new_info(src_btf);
+ if (!info) {
+ err = -errno;
+ p_err("failed to allocate info structure: %s", strerror(errno));
+ goto out;
+ }
+
+ for (i = 0; objspaths[i] != NULL; i++) {
+ err = btfgen_record_obj(info, objspaths[i]);
+ if (err) {
+ p_err("error recording relocations for %s: %s", objspaths[i],
+ strerror(errno));
+ goto out;
+ }
+ }
+
+ btf_new = btfgen_get_btf(info);
+ if (!btf_new) {
+ err = -errno;
+ p_err("error generating BTF: %s", strerror(errno));
+ goto out;
+ }
+
+ err = btf_save_raw(btf_new, dst_btf);
+ if (err) {
+ p_err("error saving btf file: %s", strerror(errno));
+ goto out;
+ }
+
+out:
+ btf__free(btf_new);
+ btfgen_free_info(info);
+
+ return err;
+}
+
+static int do_min_core_btf(int argc, char **argv)
+{
+ const char *input, *output, **objs;
+ int i, err;
+
+ if (!REQ_ARGS(3)) {
+ usage();
+ return -1;
+ }
+
+ input = GET_ARG();
+ output = GET_ARG();
+
+ objs = (const char **) calloc(argc + 1, sizeof(*objs));
+ if (!objs) {
+ p_err("failed to allocate array for object names");
+ return -ENOMEM;
+ }
+
+ i = 0;
+ while (argc)
+ objs[i++] = GET_ARG();
+
+ err = minimize_btf(input, output, objs);
+ free(objs);
+ return err;
+}
+
static const struct cmd cmds[] = {
- { "object", do_object },
- { "skeleton", do_skeleton },
- { "help", do_help },
+ { "object", do_object },
+ { "skeleton", do_skeleton },
+ { "min_core_btf", do_min_core_btf},
+ { "help", do_help },
{ 0 }
};