Binary compatibility report for the libext2fs.so.2 library between 2.4-Maemo 5.0 and 2.4-MeeGo 1.2 Harmattan versions on ARM

Test Info

Library Name	libext2fs.so.2
Version #1	2.4-Maemo 5.0 (gcc 4.2.1)
Version #2	2.4-MeeGo 1.2 Harmattan (gcc 4.4.1)
CPU Architecture	ARM

Test Results

Total Header Files	8
Total Shared Libraries	1
Total Symbols / Types	301 / 83
Verdict	Compatible

Problem Summary

	Severity	Count
Added Symbols	-	6
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	0
	Low	1
Problems with Symbols	High	0
	Medium	0
	Low	0
Problems with Constants	Low	2

Added Symbols (6)

bitops.h, libext2fs.so.2.4
ext2fs_test_inode_bitmap_range ( ext2fs_inode_bitmap bitmap, ino_t inode, int num )

ext2fs.h, libext2fs.so.2.4
ext2fs_extent_open2 ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, ext2_extent_handle_t* ret_handle )
ext2fs_get_device_phys_sectsize ( char const* file, int* sectsize )
ext2fs_get_device_size2 ( char const* file, int blocksize, blk64_t* retblocks )
ext2fs_get_rec_len ( ext2_filsys fs, ext2_dir_entry* dirent, unsigned int* rec_len )
ext2fs_set_rec_len ( ext2_filsys fs, unsigned int len, ext2_dir_entry* dirent )

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Problems with Data Types, Low Severity (1)

ext2_fs.h
[+] struct ext2_super_block (1)

	Change	Effect
1	Field s_kbytes_written has been added to this structural type at the reserved middle position (before s_reserved).	This field will not be initialized by old clients. ATTENTION: this field should be accessed only from the new library symbols, otherwise it may result in crash or incorrect behavior of applications.

[+] affected symbols (102)

ext2fs_add_journal_device ( ext2_filsys fs, ext2_filsys journal_dev ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_add_journal_inode ( ext2_filsys fs, blk_t size, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_adjust_ea_refcount ( ext2_filsys fs, blk_t blk, char* block_buf, int adjust, __u32* newcount ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_alloc_block ( ext2_filsys fs, blk_t goal, char* block_buf, blk_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_allocate_block_bitmap ( ext2_filsys fs, char const* descr, ext2fs_block_bitmap* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_allocate_group_table ( ext2_filsys fs, dgrp_t group, ext2fs_block_bitmap bmap ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_allocate_inode_bitmap ( ext2_filsys fs, char const* descr, ext2fs_inode_bitmap* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_allocate_tables ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_bg_has_super ( ext2_filsys fs, int group_block ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_block_alloc_stats ( ext2_filsys fs, blk_t blk, int inuse ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_block_iterate ( ext2_filsys fs, ext2_ino_t ino, int flags, char* block_buf, int(*func)(ext2_filsys, blk_t*, int, void*), void* priv_data ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_block_iterate2 ( ext2_filsys fs, ext2_ino_t ino, int flags, char* block_buf, int(*func)(ext2_filsys, blk_t*, e2_blkcnt_t, blk_t, int, void*), void* priv_data ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_bmap ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, char* block_buf, int bmap_flags, blk_t block, blk_t* phys_blk ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_bmap2 ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, char* block_buf, int bmap_flags, blk64_t block, int* ret_flags, blk64_t* phys_blk ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_check_desc ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_check_directory ( ext2_filsys fs, ext2_ino_t ino ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_close ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_create_icount ( ext2_filsys fs, int flags, unsigned int size, ext2_icount_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_create_icount2 ( ext2_filsys fs, int flags, unsigned int size, ext2_icount_t hint, ext2_icount_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_create_icount_tdb ( ext2_filsys fs, char* tdb_dir, int flags, ext2_icount_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_create_journal_superblock ( ext2_filsys fs, __u32 size, int flags, char** ret_jsb ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_create_resize_inode ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_descriptor_block_loc ( ext2_filsys fs, blk_t group_block, dgrp_t i ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_dir_iterate ( ext2_filsys fs, ext2_ino_t dir, int flags, char* block_buf, int(*func)(ext2_dir_entry*, int, int, char*, void*), void* priv_data ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_dir_iterate2 ( ext2_filsys fs, ext2_ino_t dir, int flags, char* block_buf, int(*func)(ext2_ino_t, int, ext2_dir_entry*, int, int, char*, void*), void* priv_data ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_dup_handle ( ext2_filsys src, ext2_filsys* dest ):

Field 'dest−>orig_super' in 2nd parameter 'dest' (pointer) has base type 'ext2_super_block'.

ext2fs_expand_dir ( ext2_filsys fs, ext2_ino_t dir ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_extent_open ( ext2_filsys fs, ext2_ino_t ino, ext2_extent_handle_t* handle ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_file_get_fs ( ext2_file_t file ):

Field 'RetVal−>super' in return value (pointer) has base type 'ext2_super_block'.

ext2fs_file_open ( ext2_filsys fs, ext2_ino_t ino, int flags, ext2_file_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_file_open2 ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, int flags, ext2_file_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_flush ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_flush_icache ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_follow_link ( ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, ext2_ino_t inode, ext2_ino_t* res_inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_free ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_get_blocks ( ext2_filsys fs, ext2_ino_t ino, blk_t* blocks ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_get_data_io ( ext2_filsys fs, io_channel* old_io ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_get_free_blocks ( ext2_filsys fs, blk_t start, blk_t finish, int num, ext2fs_block_bitmap map, blk_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_get_num_dirs ( ext2_filsys fs, ext2_ino_t* ret_num_dirs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_get_pathname ( ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, char** name ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_group_desc_csum_set ( ext2_filsys fs, dgrp_t group ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_group_desc_csum_verify ( ext2_filsys fs, dgrp_t group ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_iblk_add_blocks ( ext2_filsys fs, ext2_inode* inode, blk64_t num_blocks ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_iblk_set ( ext2_filsys fs, ext2_inode* inode, blk64_t b ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_iblk_sub_blocks ( ext2_filsys fs, ext2_inode* inode, blk64_t num_blocks ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_bitmap_read ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_bitmap_write ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_inode_read ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_inode_write ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_super_read ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_image_super_write ( ext2_filsys fs, int fd, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_init_dblist ( ext2_filsys fs, ext2_dblist* ret_dblist ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_initialize ( char const* name, int flags, ext2_super_block* param, io_manager manager, ext2_filsys* ret_fs ):

Field 'ret_fs−>orig_super' in 5th parameter 'ret_fs' (pointer) has base type 'ext2_super_block'.

ext2fs_inode_alloc_stats ( ext2_filsys fs, ext2_ino_t ino, int inuse ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_inode_alloc_stats2 ( ext2_filsys fs, ext2_ino_t ino, int inuse, int isdir ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_inode_io_intern ( ext2_filsys fs, ext2_ino_t ino, char** name ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_inode_io_intern2 ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, char** name ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_link ( ext2_filsys fs, ext2_ino_t dir, char const* name, ext2_ino_t ino, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_lookup ( ext2_filsys fs, ext2_ino_t dir, char const* name, int namelen, char* buf, ext2_ino_t* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_make_generic_bitmap ( errcode_t magic, ext2_filsys fs, __u32 start, __u32 end, __u32 real_end, char const* descr, char* init_map, ext2fs_generic_bitmap* ret ):

Field 'fs−>super' in 2nd parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_mkdir ( ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, char const* name ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_namei ( ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, char const* name, ext2_ino_t* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_namei_follow ( ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, char const* name, ext2_ino_t* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_new_block ( ext2_filsys fs, blk_t goal, ext2fs_block_bitmap map, blk_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_new_dir_block ( ext2_filsys fs, ext2_ino_t dir_ino, ext2_ino_t parent_ino, char** block ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_new_inode ( ext2_filsys fs, ext2_ino_t dir, int mode, ext2fs_inode_bitmap map, ext2_ino_t* ret ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_open ( char const* name, int flags, int superblock, unsigned int block_size, io_manager manager, ext2_filsys* ret_fs ):

Field 'ret_fs−>orig_super' in 6th parameter 'ret_fs' (pointer) has base type 'ext2_super_block'.

ext2fs_open2 ( char const* name, char const* io_options, int flags, int superblock, unsigned int block_size, io_manager manager, ext2_filsys* ret_fs ):

Field 'ret_fs−>orig_super' in 7th parameter 'ret_fs' (pointer) has base type 'ext2_super_block'.

ext2fs_open_inode_scan ( ext2_filsys fs, int buffer_blocks, ext2_inode_scan* ret_scan ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_bb_FILE ( ext2_filsys fs, FILE* f, ext2_badblocks_list* bb_list, void(*invalid)(ext2_filsys, blk_t) ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_bb_FILE2 ( ext2_filsys fs, FILE* f, ext2_badblocks_list* bb_list, void* priv_data, void(*invalid)(ext2_filsys, blk_t, char*, void*) ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_bb_inode ( ext2_filsys fs, ext2_badblocks_list* bb_list ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_bitmaps ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_block_bitmap ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_dir_block ( ext2_filsys fs, blk_t block, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_dir_block2 ( ext2_filsys fs, blk_t block, void* buf, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_ext_attr ( ext2_filsys fs, blk_t block, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_ind_block ( ext2_filsys fs, blk_t blk, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_inode ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_inode_bitmap ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_read_inode_full ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, int bufsize ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_reserve_super_and_bgd ( ext2_filsys fs, dgrp_t group, ext2fs_block_bitmap bmap ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_rewrite_to_io ( ext2_filsys fs, io_channel new_io ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_set_alloc_block_callback ( ext2_filsys fs, errcode_t(*func)(ext2_filsys, blk64_t, blk64_t*), errcode_t(**old)(ext2_filsys, blk64_t, blk64_t*) ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_set_block_alloc_stats_callback ( ext2_filsys fs, void(*func)(ext2_filsys, blk64_t, int), void(**old)(ext2_filsys, blk64_t, int) ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_set_data_io ( ext2_filsys fs, io_channel new_io ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_set_gdt_csum ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_super_and_bgd_loc ( ext2_filsys fs, dgrp_t group, blk_t* ret_super_blk, blk_t* ret_old_desc_blk, blk_t* ret_new_desc_blk, int* ret_meta_bg ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_unlink ( ext2_filsys fs, ext2_ino_t dir, char const* name, ext2_ino_t ino, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_update_bb_inode ( ext2_filsys fs, ext2_badblocks_list bb_list ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_update_dynamic_rev ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_bitmaps ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_block_bitmap ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_dir_block ( ext2_filsys fs, blk_t block, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_dir_block2 ( ext2_filsys fs, blk_t block, void* buf, int flags ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_ext_attr ( ext2_filsys fs, blk_t block, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_ind_block ( ext2_filsys fs, blk_t blk, void* buf ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_inode ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_inode_bitmap ( ext2_filsys fs ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_inode_full ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode, int bufsize ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_write_new_inode ( ext2_filsys fs, ext2_ino_t ino, ext2_inode* inode ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

ext2fs_zero_blocks ( ext2_filsys fs, blk_t blk, int num, blk_t* ret_blk, int* ret_count ):

Field 'fs−>super' in 1st parameter 'fs' (pointer) has base type 'ext2_super_block'.

Problems with Constants (2)

ext2_fs.h
[+] EXT2_FL_USER_MODIFIABLE
[+] EXT2_FL_USER_VISIBLE

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Header Files (8)

ext2_err.h
ext2_ext_attr.h
ext2_fs.h
ext2_io.h
ext2_types.h
ext2fs.h
ext3_extents.h
tdb.h

Shared Libraries (1)

libext2fs.so.2.4

Generated on Wed Jun 29 19:41:55 2011 for libext2fs.so.2 by ABI Compliance Checker 1.23.4
A tool for checking backward binary compatibility of a shared C/C++ library API