return 0;
}
-__u32 btf__get_nr_types(const struct btf *btf)
-{
- return btf->start_id + btf->nr_types - 1;
-}
-
__u32 btf__type_cnt(const struct btf *btf)
{
return btf->start_id + btf->nr_types;
return btf__load_from_kernel_by_id_split(id, NULL);
}
-int btf__get_from_id(__u32 id, struct btf **btf)
-{
- struct btf *res;
- int err;
-
- *btf = NULL;
- res = btf__load_from_kernel_by_id(id);
- err = libbpf_get_error(res);
-
- if (err)
- return libbpf_err(err);
-
- *btf = res;
- return 0;
-}
-
-int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
- __u32 expected_key_size, __u32 expected_value_size,
- __u32 *key_type_id, __u32 *value_type_id)
-{
- const struct btf_type *container_type;
- const struct btf_member *key, *value;
- const size_t max_name = 256;
- char container_name[max_name];
- __s64 key_size, value_size;
- __s32 container_id;
-
- if (snprintf(container_name, max_name, "____btf_map_%s", map_name) == max_name) {
- pr_warn("map:%s length of '____btf_map_%s' is too long\n",
- map_name, map_name);
- return libbpf_err(-EINVAL);
- }
-
- container_id = btf__find_by_name(btf, container_name);
- if (container_id < 0) {
- pr_debug("map:%s container_name:%s cannot be found in BTF. Missing BPF_ANNOTATE_KV_PAIR?\n",
- map_name, container_name);
- return libbpf_err(container_id);
- }
-
- container_type = btf__type_by_id(btf, container_id);
- if (!container_type) {
- pr_warn("map:%s cannot find BTF type for container_id:%u\n",
- map_name, container_id);
- return libbpf_err(-EINVAL);
- }
-
- if (!btf_is_struct(container_type) || btf_vlen(container_type) < 2) {
- pr_warn("map:%s container_name:%s is an invalid container struct\n",
- map_name, container_name);
- return libbpf_err(-EINVAL);
- }
-
- key = btf_members(container_type);
- value = key + 1;
-
- key_size = btf__resolve_size(btf, key->type);
- if (key_size < 0) {
- pr_warn("map:%s invalid BTF key_type_size\n", map_name);
- return libbpf_err(key_size);
- }
-
- if (expected_key_size != key_size) {
- pr_warn("map:%s btf_key_type_size:%u != map_def_key_size:%u\n",
- map_name, (__u32)key_size, expected_key_size);
- return libbpf_err(-EINVAL);
- }
-
- value_size = btf__resolve_size(btf, value->type);
- if (value_size < 0) {
- pr_warn("map:%s invalid BTF value_type_size\n", map_name);
- return libbpf_err(value_size);
- }
-
- if (expected_value_size != value_size) {
- pr_warn("map:%s btf_value_type_size:%u != map_def_value_size:%u\n",
- map_name, (__u32)value_size, expected_value_size);
- return libbpf_err(-EINVAL);
- }
-
- *key_type_id = key->type;
- *value_type_id = value->type;
-
- return 0;
-}
-
static void btf_invalidate_raw_data(struct btf *btf)
{
if (btf->raw_data) {
return btf_ext->data;
}
-static int btf_ext_reloc_info(const struct btf *btf,
- const struct btf_ext_info *ext_info,
- const char *sec_name, __u32 insns_cnt,
- void **info, __u32 *cnt)
-{
- __u32 sec_hdrlen = sizeof(struct btf_ext_info_sec);
- __u32 i, record_size, existing_len, records_len;
- struct btf_ext_info_sec *sinfo;
- const char *info_sec_name;
- __u64 remain_len;
- void *data;
-
- record_size = ext_info->rec_size;
- sinfo = ext_info->info;
- remain_len = ext_info->len;
- while (remain_len > 0) {
- records_len = sinfo->num_info * record_size;
- info_sec_name = btf__name_by_offset(btf, sinfo->sec_name_off);
- if (strcmp(info_sec_name, sec_name)) {
- remain_len -= sec_hdrlen + records_len;
- sinfo = (void *)sinfo + sec_hdrlen + records_len;
- continue;
- }
-
- existing_len = (*cnt) * record_size;
- data = realloc(*info, existing_len + records_len);
- if (!data)
- return libbpf_err(-ENOMEM);
-
- memcpy(data + existing_len, sinfo->data, records_len);
- /* adjust insn_off only, the rest data will be passed
- * to the kernel.
- */
- for (i = 0; i < sinfo->num_info; i++) {
- __u32 *insn_off;
-
- insn_off = data + existing_len + (i * record_size);
- *insn_off = *insn_off / sizeof(struct bpf_insn) + insns_cnt;
- }
- *info = data;
- *cnt += sinfo->num_info;
- return 0;
- }
-
- return libbpf_err(-ENOENT);
-}
-
-int btf_ext__reloc_func_info(const struct btf *btf,
- const struct btf_ext *btf_ext,
- const char *sec_name, __u32 insns_cnt,
- void **func_info, __u32 *cnt)
-{
- return btf_ext_reloc_info(btf, &btf_ext->func_info, sec_name,
- insns_cnt, func_info, cnt);
-}
-
-int btf_ext__reloc_line_info(const struct btf *btf,
- const struct btf_ext *btf_ext,
- const char *sec_name, __u32 insns_cnt,
- void **line_info, __u32 *cnt)
-{
- return btf_ext_reloc_info(btf, &btf_ext->line_info, sec_name,
- insns_cnt, line_info, cnt);
-}
-
-__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext)
-{
- return btf_ext->func_info.rec_size;
-}
-
-__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext)
-{
- return btf_ext->line_info.rec_size;
-}
-
struct btf_dedup;
static struct btf_dedup *btf_dedup_new(struct btf *btf, const struct btf_dedup_opts *opts);
* deduplicating structs/unions is described in greater details in comments for
* `btf_dedup_is_equiv` function.
*/
-
-DEFAULT_VERSION(btf__dedup_v0_6_0, btf__dedup, LIBBPF_0.6.0)
-int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts)
+int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts)
{
struct btf_dedup *d;
int err;
return libbpf_err(err);
}
-COMPAT_VERSION(btf__dedup_deprecated, btf__dedup, LIBBPF_0.0.2)
-int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *unused_opts)
-{
- LIBBPF_OPTS(btf_dedup_opts, opts, .btf_ext = btf_ext);
-
- if (unused_opts) {
- pr_warn("please use new version of btf__dedup() that supports options\n");
- return libbpf_err(-ENOTSUP);
- }
-
- return btf__dedup(btf, &opts);
-}
-
#define BTF_UNPROCESSED_ID ((__u32)-1)
#define BTF_IN_PROGRESS_ID ((__u32)-2)
LIBBPF_API struct btf *btf__load_from_kernel_by_id(__u32 id);
LIBBPF_API struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf);
-LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_from_kernel_by_id instead")
-LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
-LIBBPF_DEPRECATED_SINCE(0, 6, "intended for internal libbpf use only")
-LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf);
-LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_into_kernel instead")
-LIBBPF_API int btf__load(struct btf *btf);
LIBBPF_API int btf__load_into_kernel(struct btf *btf);
LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
const char *type_name);
LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf,
const char *type_name, __u32 kind);
-LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__type_cnt() instead; note that btf__get_nr_types() == btf__type_cnt() - 1")
-LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf);
LIBBPF_API __u32 btf__type_cnt(const struct btf *btf);
LIBBPF_API const struct btf *btf__base_btf(const struct btf *btf);
LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf,
LIBBPF_API const void *btf__raw_data(const struct btf *btf, __u32 *size);
LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset);
-LIBBPF_DEPRECATED_SINCE(0, 7, "this API is not necessary when BTF-defined maps are used")
-LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
- __u32 expected_key_size,
- __u32 expected_value_size,
- __u32 *key_type_id, __u32 *value_type_id);
LIBBPF_API struct btf_ext *btf_ext__new(const __u8 *data, __u32 size);
LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext);
LIBBPF_API const void *btf_ext__raw_data(const struct btf_ext *btf_ext, __u32 *size);
-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")
-int btf_ext__reloc_func_info(const struct btf *btf,
- const struct btf_ext *btf_ext,
- const char *sec_name, __u32 insns_cnt,
- void **func_info, __u32 *cnt);
-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")
-int btf_ext__reloc_line_info(const struct btf *btf,
- const struct btf_ext *btf_ext,
- const char *sec_name, __u32 insns_cnt,
- void **line_info, __u32 *cnt);
-LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info is deprecated; write custom func_info parsing to fetch rec_size")
-__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext);
-LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info is deprecated; write custom line_info parsing to fetch rec_size")
-__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext);
LIBBPF_API int btf__find_str(struct btf *btf, const char *s);
LIBBPF_API int btf__add_str(struct btf *btf, const char *s);
LIBBPF_API int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts);
-LIBBPF_API int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts);
-
-LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__dedup() instead")
-LIBBPF_API int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *opts);
-#define btf__dedup(...) ___libbpf_overload(___btf_dedup, __VA_ARGS__)
-#define ___btf_dedup3(btf, btf_ext, opts) btf__dedup_deprecated(btf, btf_ext, opts)
-#define ___btf_dedup2(btf, opts) btf__dedup(btf, opts)
-
struct btf_dump;
struct btf_dump_opts {
- union {
- size_t sz;
- void *ctx; /* DEPRECATED: will be gone in v1.0 */
- };
+ size_t sz;
};
+#define btf_dump_opts__last_field sz
typedef void (*btf_dump_printf_fn_t)(void *ctx, const char *fmt, va_list args);
void *ctx,
const struct btf_dump_opts *opts);
-LIBBPF_API struct btf_dump *btf_dump__new_v0_6_0(const struct btf *btf,
- btf_dump_printf_fn_t printf_fn,
- void *ctx,
- const struct btf_dump_opts *opts);
-
-LIBBPF_API 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);
-
-/* Choose either btf_dump__new() or btf_dump__new_deprecated() based on the
- * type of 4th argument. If it's btf_dump's print callback, use deprecated
- * API; otherwise, choose the new btf_dump__new(). ___libbpf_override()
- * doesn't work here because both variants have 4 input arguments.
- *
- * (void *) casts are necessary to avoid compilation warnings about type
- * mismatches, because even though __builtin_choose_expr() only ever evaluates
- * one side the other side still has to satisfy type constraints (this is
- * compiler implementation limitation which might be lifted eventually,
- * according to the documentation). So passing struct btf_ext in place of
- * btf_dump_printf_fn_t would be generating compilation warning. Casting to
- * void * avoids this issue.
- *
- * Also, two type compatibility checks for a function and function pointer are
- * required because passing function reference into btf_dump__new() as
- * btf_dump__new(..., my_callback, ...) and as btf_dump__new(...,
- * &my_callback, ...) (not explicit ampersand in the latter case) actually
- * differs as far as __builtin_types_compatible_p() is concerned. Thus two
- * checks are combined to detect callback argument.
- *
- * The rest works just like in case of ___libbpf_override() usage with symbol
- * versioning.
- *
- * C++ compilers don't support __builtin_types_compatible_p(), so at least
- * don't screw up compilation for them and let C++ users pick btf_dump__new
- * vs btf_dump__new_deprecated explicitly.
- */
-#ifndef __cplusplus
-#define btf_dump__new(a1, a2, a3, a4) __builtin_choose_expr( \
- __builtin_types_compatible_p(typeof(a4), btf_dump_printf_fn_t) || \
- __builtin_types_compatible_p(typeof(a4), void(void *, const char *, va_list)), \
- btf_dump__new_deprecated((void *)a1, (void *)a2, (void *)a3, (void *)a4), \
- btf_dump__new((void *)a1, (void *)a2, (void *)a3, (void *)a4))
-#endif
-
LIBBPF_API void btf_dump__free(struct btf_dump *d);
LIBBPF_API int btf_dump__dump_type(struct btf_dump *d, __u32 id);
static int btf_dump_mark_referenced(struct btf_dump *d);
static int btf_dump_resize(struct btf_dump *d);
-DEFAULT_VERSION(btf_dump__new_v0_6_0, btf_dump__new, LIBBPF_0.6.0)
-struct btf_dump *btf_dump__new_v0_6_0(const struct btf *btf,
- btf_dump_printf_fn_t printf_fn,
- void *ctx,
- const struct btf_dump_opts *opts)
+struct btf_dump *btf_dump__new(const struct btf *btf,
+ btf_dump_printf_fn_t printf_fn,
+ void *ctx,
+ const struct btf_dump_opts *opts)
{
struct btf_dump *d;
int err;
+ if (!OPTS_VALID(opts, btf_dump_opts))
+ return libbpf_err_ptr(-EINVAL);
+
if (!printf_fn)
return libbpf_err_ptr(-EINVAL);
return libbpf_err_ptr(err);
}
-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;
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;
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;
* 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;
+
+ id = btf__find_by_name(obj->btf, map->real_name);
+ if (id < 0)
+ return id;
- map->btf_key_type_id = key_type_id;
- map->btf_value_type_id = bpf_map__is_internal(map) ?
- ret : value_type_id;
+ map->btf_key_type_id = 0;
+ map->btf_value_type_id = id;
return 0;
}
btf__fd;
btf__find_by_name;
btf__free;
- btf__get_from_id;
btf__name_by_offset;
btf__new;
btf__resolve_size;
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;
global:
bpf_map__is_internal;
bpf_map_freeze;
- btf__finalize_data;
} LIBBPF_0.0.2;
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;
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;
projects / linux-2.6-microblaze.git / commitdiff