libbpf: Use bpf_{btf,link,map,prog}_get_info_by_fd()

Use the new type-safe wrappers around bpf_obj_get_info_by_fd().
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230214231221.249277-3-iii@linux.ibm.com

tools/lib/bpf/btf.c

@@ -1350,9 +1350,9 @@ struct btf *btf_get_from_fd(int btf_fd, struct btf *base_btf)
 	void *ptr;
 	int err;
 
-	/* we won't know btf_size until we call bpf_obj_get_info_by_fd(). so
+	/* we won't know btf_size until we call bpf_btf_get_info_by_fd(). so
 	 * let's start with a sane default - 4KiB here - and resize it only if
-	 * bpf_obj_get_info_by_fd() needs a bigger buffer.
+	 * bpf_btf_get_info_by_fd() needs a bigger buffer.
 	 */
 	last_size = 4096;
 	ptr = malloc(last_size);
@@ -1362,7 +1362,7 @@ struct btf *btf_get_from_fd(int btf_fd, struct btf *base_btf)
 	memset(&btf_info, 0, sizeof(btf_info));
 	btf_info.btf = ptr_to_u64(ptr);
 	btf_info.btf_size = last_size;
-	err = bpf_obj_get_info_by_fd(btf_fd, &btf_info, &len);
+	err = bpf_btf_get_info_by_fd(btf_fd, &btf_info, &len);
 
 	if (!err && btf_info.btf_size > last_size) {
 		void *temp_ptr;
@@ -1380,7 +1380,7 @@ struct btf *btf_get_from_fd(int btf_fd, struct btf *base_btf)
 		btf_info.btf = ptr_to_u64(ptr);
 		btf_info.btf_size = last_size;
 
-		err = bpf_obj_get_info_by_fd(btf_fd, &btf_info, &len);
+		err = bpf_btf_get_info_by_fd(btf_fd, &btf_info, &len);
 	}
 
 	if (err || btf_info.btf_size > last_size) {

tools/lib/bpf/libbpf.c

@@ -4345,7 +4345,7 @@ int bpf_map__reuse_fd(struct bpf_map *map, int fd)
 	char *new_name;
 
 	memset(&info, 0, len);
-	err = bpf_obj_get_info_by_fd(fd, &info, &len);
+	err = bpf_map_get_info_by_fd(fd, &info, &len);
 	if (err && errno == EINVAL)
 		err = bpf_get_map_info_from_fdinfo(fd, &info);
 	if (err)
@@ -4729,7 +4729,7 @@ static int probe_module_btf(void)
 	 * kernel's module BTF support coincides with support for
 	 * name/name_len fields in struct bpf_btf_info.
 	 */
-	err = bpf_obj_get_info_by_fd(fd, &info, &len);
+	err = bpf_btf_get_info_by_fd(fd, &info, &len);
 	close(fd);
 	return !err;
 }
@@ -4892,7 +4892,7 @@ static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
 	int err;
 
 	memset(&map_info, 0, map_info_len);
-	err = bpf_obj_get_info_by_fd(map_fd, &map_info, &map_info_len);
+	err = bpf_map_get_info_by_fd(map_fd, &map_info, &map_info_len);
 	if (err && errno == EINVAL)
 		err = bpf_get_map_info_from_fdinfo(map_fd, &map_info);
 	if (err) {
@@ -5437,7 +5437,7 @@ static int load_module_btfs(struct bpf_object *obj)
 		info.name = ptr_to_u64(name);
 		info.name_len = sizeof(name);
 
-		err = bpf_obj_get_info_by_fd(fd, &info, &len);
+		err = bpf_btf_get_info_by_fd(fd, &info, &len);
 		if (err) {
 			err = -errno;
 			pr_warn("failed to get BTF object #%d info: %d\n", id, err);
@@ -9030,9 +9030,9 @@ static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd)
 	int err;
 
 	memset(&info, 0, info_len);
-	err = bpf_obj_get_info_by_fd(attach_prog_fd, &info, &info_len);
+	err = bpf_prog_get_info_by_fd(attach_prog_fd, &info, &info_len);
 	if (err) {
-		pr_warn("failed bpf_obj_get_info_by_fd for FD %d: %d\n",
+		pr_warn("failed bpf_prog_get_info_by_fd for FD %d: %d\n",
 			attach_prog_fd, err);
 		return err;
 	}
@@ -11741,7 +11741,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
 	/* best-effort sanity checks */
 	memset(&map, 0, sizeof(map));
 	map_info_len = sizeof(map);
-	err = bpf_obj_get_info_by_fd(map_fd, &map, &map_info_len);
+	err = bpf_map_get_info_by_fd(map_fd, &map, &map_info_len);
 	if (err) {
 		err = -errno;
 		/* if BPF_OBJ_GET_INFO_BY_FD is supported, will return

tools/lib/bpf/netlink.c

@@ -689,7 +689,7 @@ static int tc_add_fd_and_name(struct libbpf_nla_req *req, int fd)
 	int len, ret;
 
 	memset(&info, 0, info_len);
-	ret = bpf_obj_get_info_by_fd(fd, &info, &info_len);
+	ret = bpf_prog_get_info_by_fd(fd, &info, &info_len);
 	if (ret < 0)
 		return ret;
 

tools/lib/bpf/ringbuf.c

@@ -83,7 +83,7 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd,
 
 	memset(&info, 0, sizeof(info));
 
-	err = bpf_obj_get_info_by_fd(map_fd, &info, &len);
+	err = bpf_map_get_info_by_fd(map_fd, &info, &len);
 	if (err) {
 		err = -errno;
 		pr_warn("ringbuf: failed to get map info for fd=%d: %d\n",
@@ -359,7 +359,7 @@ static int user_ringbuf_map(struct user_ring_buffer *rb, int map_fd)
 
 	memset(&info, 0, sizeof(info));
 
-	err = bpf_obj_get_info_by_fd(map_fd, &info, &len);
+	err = bpf_map_get_info_by_fd(map_fd, &info, &len);
 	if (err) {
 		err = -errno;
 		pr_warn("user ringbuf: failed to get map info for fd=%d: %d\n", map_fd, err);