libbpf: remove deprecated BTF APIs
Get rid of deprecated BTF-related APIs. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20220627211527.2245459-6-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko
Alexei Starovoitov
parent
d320fad217
commit
aaf6886d9b
@ -448,11 +448,6 @@ static int btf_parse_type_sec(struct btf *btf)
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return 0;
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}
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__u32 btf__get_nr_types(const struct btf *btf)
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{
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return btf->start_id + btf->nr_types - 1;
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}
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__u32 btf__type_cnt(const struct btf *btf)
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{
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return btf->start_id + btf->nr_types;
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@ -1408,92 +1403,6 @@ struct btf *btf__load_from_kernel_by_id(__u32 id)
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return btf__load_from_kernel_by_id_split(id, NULL);
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}
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int btf__get_from_id(__u32 id, struct btf **btf)
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{
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struct btf *res;
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int err;
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*btf = NULL;
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res = btf__load_from_kernel_by_id(id);
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err = libbpf_get_error(res);
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if (err)
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return libbpf_err(err);
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*btf = res;
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return 0;
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}
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int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
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__u32 expected_key_size, __u32 expected_value_size,
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__u32 *key_type_id, __u32 *value_type_id)
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{
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const struct btf_type *container_type;
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const struct btf_member *key, *value;
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const size_t max_name = 256;
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char container_name[max_name];
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__s64 key_size, value_size;
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__s32 container_id;
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if (snprintf(container_name, max_name, "____btf_map_%s", map_name) == max_name) {
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pr_warn("map:%s length of '____btf_map_%s' is too long\n",
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map_name, map_name);
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return libbpf_err(-EINVAL);
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}
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container_id = btf__find_by_name(btf, container_name);
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if (container_id < 0) {
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pr_debug("map:%s container_name:%s cannot be found in BTF. Missing BPF_ANNOTATE_KV_PAIR?\n",
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map_name, container_name);
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return libbpf_err(container_id);
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}
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container_type = btf__type_by_id(btf, container_id);
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if (!container_type) {
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pr_warn("map:%s cannot find BTF type for container_id:%u\n",
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map_name, container_id);
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return libbpf_err(-EINVAL);
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}
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if (!btf_is_struct(container_type) || btf_vlen(container_type) < 2) {
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pr_warn("map:%s container_name:%s is an invalid container struct\n",
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map_name, container_name);
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return libbpf_err(-EINVAL);
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}
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key = btf_members(container_type);
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value = key + 1;
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key_size = btf__resolve_size(btf, key->type);
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if (key_size < 0) {
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pr_warn("map:%s invalid BTF key_type_size\n", map_name);
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return libbpf_err(key_size);
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}
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if (expected_key_size != key_size) {
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pr_warn("map:%s btf_key_type_size:%u != map_def_key_size:%u\n",
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map_name, (__u32)key_size, expected_key_size);
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return libbpf_err(-EINVAL);
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}
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value_size = btf__resolve_size(btf, value->type);
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if (value_size < 0) {
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pr_warn("map:%s invalid BTF value_type_size\n", map_name);
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return libbpf_err(value_size);
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}
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if (expected_value_size != value_size) {
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pr_warn("map:%s btf_value_type_size:%u != map_def_value_size:%u\n",
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map_name, (__u32)value_size, expected_value_size);
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return libbpf_err(-EINVAL);
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}
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*key_type_id = key->type;
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*value_type_id = value->type;
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return 0;
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}
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static void btf_invalidate_raw_data(struct btf *btf)
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{
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if (btf->raw_data) {
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@ -2965,81 +2874,6 @@ const void *btf_ext__get_raw_data(const struct btf_ext *btf_ext, __u32 *size)
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return btf_ext->data;
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}
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static int btf_ext_reloc_info(const struct btf *btf,
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const struct btf_ext_info *ext_info,
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const char *sec_name, __u32 insns_cnt,
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void **info, __u32 *cnt)
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{
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__u32 sec_hdrlen = sizeof(struct btf_ext_info_sec);
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__u32 i, record_size, existing_len, records_len;
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struct btf_ext_info_sec *sinfo;
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const char *info_sec_name;
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__u64 remain_len;
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void *data;
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record_size = ext_info->rec_size;
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sinfo = ext_info->info;
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remain_len = ext_info->len;
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while (remain_len > 0) {
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records_len = sinfo->num_info * record_size;
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info_sec_name = btf__name_by_offset(btf, sinfo->sec_name_off);
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if (strcmp(info_sec_name, sec_name)) {
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remain_len -= sec_hdrlen + records_len;
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sinfo = (void *)sinfo + sec_hdrlen + records_len;
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continue;
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}
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existing_len = (*cnt) * record_size;
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data = realloc(*info, existing_len + records_len);
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if (!data)
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return libbpf_err(-ENOMEM);
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memcpy(data + existing_len, sinfo->data, records_len);
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/* adjust insn_off only, the rest data will be passed
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* to the kernel.
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*/
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for (i = 0; i < sinfo->num_info; i++) {
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__u32 *insn_off;
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insn_off = data + existing_len + (i * record_size);
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*insn_off = *insn_off / sizeof(struct bpf_insn) + insns_cnt;
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}
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*info = data;
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*cnt += sinfo->num_info;
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return 0;
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}
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return libbpf_err(-ENOENT);
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}
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int btf_ext__reloc_func_info(const struct btf *btf,
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const struct btf_ext *btf_ext,
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const char *sec_name, __u32 insns_cnt,
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void **func_info, __u32 *cnt)
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{
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return btf_ext_reloc_info(btf, &btf_ext->func_info, sec_name,
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insns_cnt, func_info, cnt);
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}
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int btf_ext__reloc_line_info(const struct btf *btf,
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const struct btf_ext *btf_ext,
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const char *sec_name, __u32 insns_cnt,
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void **line_info, __u32 *cnt)
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{
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return btf_ext_reloc_info(btf, &btf_ext->line_info, sec_name,
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insns_cnt, line_info, cnt);
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}
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__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext)
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{
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return btf_ext->func_info.rec_size;
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}
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__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext)
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{
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return btf_ext->line_info.rec_size;
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}
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struct btf_dedup;
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static struct btf_dedup *btf_dedup_new(struct btf *btf, const struct btf_dedup_opts *opts);
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@ -3189,9 +3023,7 @@ static int btf_dedup_remap_types(struct btf_dedup *d);
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* deduplicating structs/unions is described in greater details in comments for
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* `btf_dedup_is_equiv` function.
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*/
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DEFAULT_VERSION(btf__dedup_v0_6_0, btf__dedup, LIBBPF_0.6.0)
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int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts)
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int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts)
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{
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struct btf_dedup *d;
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int err;
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@ -3251,19 +3083,6 @@ done:
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return libbpf_err(err);
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}
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COMPAT_VERSION(btf__dedup_deprecated, btf__dedup, LIBBPF_0.0.2)
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int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *unused_opts)
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{
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LIBBPF_OPTS(btf_dedup_opts, opts, .btf_ext = btf_ext);
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if (unused_opts) {
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pr_warn("please use new version of btf__dedup() that supports options\n");
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return libbpf_err(-ENOTSUP);
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}
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return btf__dedup(btf, &opts);
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}
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#define BTF_UNPROCESSED_ID ((__u32)-1)
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#define BTF_IN_PROGRESS_ID ((__u32)-2)
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@ -120,20 +120,12 @@ LIBBPF_API struct btf *libbpf_find_kernel_btf(void);
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LIBBPF_API struct btf *btf__load_from_kernel_by_id(__u32 id);
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LIBBPF_API struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf);
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LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_from_kernel_by_id instead")
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LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
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LIBBPF_DEPRECATED_SINCE(0, 6, "intended for internal libbpf use only")
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LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf);
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LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_into_kernel instead")
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LIBBPF_API int btf__load(struct btf *btf);
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LIBBPF_API int btf__load_into_kernel(struct btf *btf);
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LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
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const char *type_name);
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LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf,
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const char *type_name, __u32 kind);
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LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__type_cnt() instead; note that btf__get_nr_types() == btf__type_cnt() - 1")
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LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf);
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LIBBPF_API __u32 btf__type_cnt(const struct btf *btf);
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LIBBPF_API const struct btf *btf__base_btf(const struct btf *btf);
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LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf,
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@ -150,29 +142,10 @@ LIBBPF_API void btf__set_fd(struct btf *btf, int fd);
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LIBBPF_API const void *btf__raw_data(const struct btf *btf, __u32 *size);
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LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
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LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset);
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LIBBPF_DEPRECATED_SINCE(0, 7, "this API is not necessary when BTF-defined maps are used")
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LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
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__u32 expected_key_size,
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__u32 expected_value_size,
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__u32 *key_type_id, __u32 *value_type_id);
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LIBBPF_API struct btf_ext *btf_ext__new(const __u8 *data, __u32 size);
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LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext);
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LIBBPF_API const void *btf_ext__raw_data(const struct btf_ext *btf_ext, __u32 *size);
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LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions")
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int btf_ext__reloc_func_info(const struct btf *btf,
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const struct btf_ext *btf_ext,
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const char *sec_name, __u32 insns_cnt,
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void **func_info, __u32 *cnt);
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LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions")
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int btf_ext__reloc_line_info(const struct btf *btf,
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const struct btf_ext *btf_ext,
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const char *sec_name, __u32 insns_cnt,
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void **line_info, __u32 *cnt);
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LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info is deprecated; write custom func_info parsing to fetch rec_size")
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__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext);
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LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info is deprecated; write custom line_info parsing to fetch rec_size")
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__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext);
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LIBBPF_API int btf__find_str(struct btf *btf, const char *s);
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LIBBPF_API int btf__add_str(struct btf *btf, const char *s);
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@ -259,22 +232,12 @@ struct btf_dedup_opts {
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LIBBPF_API int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts);
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LIBBPF_API int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts);
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LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__dedup() instead")
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LIBBPF_API int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *opts);
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#define btf__dedup(...) ___libbpf_overload(___btf_dedup, __VA_ARGS__)
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#define ___btf_dedup3(btf, btf_ext, opts) btf__dedup_deprecated(btf, btf_ext, opts)
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#define ___btf_dedup2(btf, opts) btf__dedup(btf, opts)
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struct btf_dump;
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struct btf_dump_opts {
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union {
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size_t sz;
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void *ctx; /* DEPRECATED: will be gone in v1.0 */
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};
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size_t sz;
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};
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#define btf_dump_opts__last_field sz
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typedef void (*btf_dump_printf_fn_t)(void *ctx, const char *fmt, va_list args);
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@ -283,51 +246,6 @@ LIBBPF_API struct btf_dump *btf_dump__new(const struct btf *btf,
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void *ctx,
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const struct btf_dump_opts *opts);
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LIBBPF_API struct btf_dump *btf_dump__new_v0_6_0(const struct btf *btf,
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btf_dump_printf_fn_t printf_fn,
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void *ctx,
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const struct btf_dump_opts *opts);
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LIBBPF_API struct btf_dump *btf_dump__new_deprecated(const struct btf *btf,
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const struct btf_ext *btf_ext,
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const struct btf_dump_opts *opts,
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btf_dump_printf_fn_t printf_fn);
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/* Choose either btf_dump__new() or btf_dump__new_deprecated() based on the
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* type of 4th argument. If it's btf_dump's print callback, use deprecated
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* API; otherwise, choose the new btf_dump__new(). ___libbpf_override()
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* doesn't work here because both variants have 4 input arguments.
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*
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* (void *) casts are necessary to avoid compilation warnings about type
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* mismatches, because even though __builtin_choose_expr() only ever evaluates
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* one side the other side still has to satisfy type constraints (this is
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* compiler implementation limitation which might be lifted eventually,
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* according to the documentation). So passing struct btf_ext in place of
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* btf_dump_printf_fn_t would be generating compilation warning. Casting to
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* void * avoids this issue.
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*
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* Also, two type compatibility checks for a function and function pointer are
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* required because passing function reference into btf_dump__new() as
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* btf_dump__new(..., my_callback, ...) and as btf_dump__new(...,
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* &my_callback, ...) (not explicit ampersand in the latter case) actually
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* differs as far as __builtin_types_compatible_p() is concerned. Thus two
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* checks are combined to detect callback argument.
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*
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* The rest works just like in case of ___libbpf_override() usage with symbol
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* versioning.
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*
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* C++ compilers don't support __builtin_types_compatible_p(), so at least
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* don't screw up compilation for them and let C++ users pick btf_dump__new
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* vs btf_dump__new_deprecated explicitly.
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*/
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#ifndef __cplusplus
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#define btf_dump__new(a1, a2, a3, a4) __builtin_choose_expr( \
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__builtin_types_compatible_p(typeof(a4), btf_dump_printf_fn_t) || \
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__builtin_types_compatible_p(typeof(a4), void(void *, const char *, va_list)), \
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btf_dump__new_deprecated((void *)a1, (void *)a2, (void *)a3, (void *)a4), \
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btf_dump__new((void *)a1, (void *)a2, (void *)a3, (void *)a4))
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#endif
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LIBBPF_API void btf_dump__free(struct btf_dump *d);
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LIBBPF_API int btf_dump__dump_type(struct btf_dump *d, __u32 id);
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@ -144,15 +144,17 @@ static void btf_dump_printf(const struct btf_dump *d, const char *fmt, ...)
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static int btf_dump_mark_referenced(struct btf_dump *d);
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static int btf_dump_resize(struct btf_dump *d);
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DEFAULT_VERSION(btf_dump__new_v0_6_0, btf_dump__new, LIBBPF_0.6.0)
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struct btf_dump *btf_dump__new_v0_6_0(const struct btf *btf,
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btf_dump_printf_fn_t printf_fn,
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void *ctx,
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const struct btf_dump_opts *opts)
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struct btf_dump *btf_dump__new(const struct btf *btf,
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btf_dump_printf_fn_t printf_fn,
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void *ctx,
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const struct btf_dump_opts *opts)
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{
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struct btf_dump *d;
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int err;
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if (!OPTS_VALID(opts, btf_dump_opts))
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return libbpf_err_ptr(-EINVAL);
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if (!printf_fn)
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return libbpf_err_ptr(-EINVAL);
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@ -188,17 +190,6 @@ err:
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return libbpf_err_ptr(err);
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}
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|
||||
COMPAT_VERSION(btf_dump__new_deprecated, btf_dump__new, LIBBPF_0.0.4)
|
||||
struct btf_dump *btf_dump__new_deprecated(const struct btf *btf,
|
||||
const struct btf_ext *btf_ext,
|
||||
const struct btf_dump_opts *opts,
|
||||
btf_dump_printf_fn_t printf_fn)
|
||||
{
|
||||
if (!printf_fn)
|
||||
return libbpf_err_ptr(-EINVAL);
|
||||
return btf_dump__new_v0_6_0(btf, printf_fn, opts ? opts->ctx : NULL, opts);
|
||||
}
|
||||
|
||||
static int btf_dump_resize(struct btf_dump *d)
|
||||
{
|
||||
int err, last_id = btf__type_cnt(d->btf) - 1;
|
||||
|
||||
@ -3061,11 +3061,6 @@ static int btf_finalize_data(struct bpf_object *obj, struct btf *btf)
|
||||
return libbpf_err(err);
|
||||
}
|
||||
|
||||
int btf__finalize_data(struct bpf_object *obj, struct btf *btf)
|
||||
{
|
||||
return btf_finalize_data(obj, btf);
|
||||
}
|
||||
|
||||
static int bpf_object__finalize_btf(struct bpf_object *obj)
|
||||
{
|
||||
int err;
|
||||
@ -4397,9 +4392,7 @@ bpf_object__collect_prog_relos(struct bpf_object *obj, Elf64_Shdr *shdr, Elf_Dat
|
||||
|
||||
static int bpf_map_find_btf_info(struct bpf_object *obj, struct bpf_map *map)
|
||||
{
|
||||
struct bpf_map_def *def = &map->def;
|
||||
__u32 key_type_id = 0, value_type_id = 0;
|
||||
int ret;
|
||||
int id;
|
||||
|
||||
if (!obj->btf)
|
||||
return -ENOENT;
|
||||
@ -4408,31 +4401,22 @@ static int bpf_map_find_btf_info(struct bpf_object *obj, struct bpf_map *map)
|
||||
* For struct_ops map, it does not need btf_key_type_id and
|
||||
* btf_value_type_id.
|
||||
*/
|
||||
if (map->sec_idx == obj->efile.btf_maps_shndx ||
|
||||
bpf_map__is_struct_ops(map))
|
||||
if (map->sec_idx == obj->efile.btf_maps_shndx || bpf_map__is_struct_ops(map))
|
||||
return 0;
|
||||
|
||||
if (!bpf_map__is_internal(map)) {
|
||||
pr_warn("Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead\n");
|
||||
#pragma GCC diagnostic push
|
||||
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
|
||||
ret = btf__get_map_kv_tids(obj->btf, map->name, def->key_size,
|
||||
def->value_size, &key_type_id,
|
||||
&value_type_id);
|
||||
#pragma GCC diagnostic pop
|
||||
} else {
|
||||
/*
|
||||
* LLVM annotates global data differently in BTF, that is,
|
||||
* only as '.data', '.bss' or '.rodata'.
|
||||
*/
|
||||
ret = btf__find_by_name(obj->btf, map->real_name);
|
||||
}
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
/*
|
||||
* LLVM annotates global data differently in BTF, that is,
|
||||
* only as '.data', '.bss' or '.rodata'.
|
||||
*/
|
||||
if (!bpf_map__is_internal(map))
|
||||
return -ENOENT;
|
||||
|
||||
map->btf_key_type_id = key_type_id;
|
||||
map->btf_value_type_id = bpf_map__is_internal(map) ?
|
||||
ret : value_type_id;
|
||||
id = btf__find_by_name(obj->btf, map->real_name);
|
||||
if (id < 0)
|
||||
return id;
|
||||
|
||||
map->btf_key_type_id = 0;
|
||||
map->btf_value_type_id = id;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -95,7 +95,6 @@ LIBBPF_0.0.1 {
|
||||
btf__fd;
|
||||
btf__find_by_name;
|
||||
btf__free;
|
||||
btf__get_from_id;
|
||||
btf__name_by_offset;
|
||||
btf__new;
|
||||
btf__resolve_size;
|
||||
@ -116,18 +115,10 @@ LIBBPF_0.0.2 {
|
||||
bpf_map_lookup_elem_flags;
|
||||
bpf_object__btf;
|
||||
bpf_object__find_map_fd_by_name;
|
||||
btf__dedup;
|
||||
btf__get_map_kv_tids;
|
||||
btf__get_nr_types;
|
||||
btf__get_raw_data;
|
||||
btf__load;
|
||||
btf_ext__free;
|
||||
btf_ext__func_info_rec_size;
|
||||
btf_ext__get_raw_data;
|
||||
btf_ext__line_info_rec_size;
|
||||
btf_ext__new;
|
||||
btf_ext__reloc_func_info;
|
||||
btf_ext__reloc_line_info;
|
||||
bpf_program__get_prog_info_linear;
|
||||
bpf_program__bpil_addr_to_offs;
|
||||
bpf_program__bpil_offs_to_addr;
|
||||
@ -137,7 +128,6 @@ LIBBPF_0.0.3 {
|
||||
global:
|
||||
bpf_map__is_internal;
|
||||
bpf_map_freeze;
|
||||
btf__finalize_data;
|
||||
} LIBBPF_0.0.2;
|
||||
|
||||
LIBBPF_0.0.4 {
|
||||
@ -151,7 +141,6 @@ LIBBPF_0.0.4 {
|
||||
bpf_program__attach_uprobe;
|
||||
btf_dump__dump_type;
|
||||
btf_dump__free;
|
||||
btf_dump__new;
|
||||
btf__parse_elf;
|
||||
libbpf_num_possible_cpus;
|
||||
perf_buffer__free;
|
||||
@ -373,11 +362,9 @@ LIBBPF_0.6.0 {
|
||||
btf__add_decl_tag;
|
||||
btf__add_type_tag;
|
||||
btf__dedup;
|
||||
btf__dedup_deprecated;
|
||||
btf__raw_data;
|
||||
btf__type_cnt;
|
||||
btf_dump__new;
|
||||
btf_dump__new_deprecated;
|
||||
libbpf_major_version;
|
||||
libbpf_minor_version;
|
||||
libbpf_version_string;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user