1) sd_journal
2) SD_JOURNAL_ALL_NAMESPACES
3) sd_journal_all_namespaces
4) sd_journal_close
5) SD_JOURNAL_CURRENT_USER
6) sd_journal_current_user
7) SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE
8) sd_journal_include_default_namespace
9) SD_JOURNAL_LOCAL_ONLY
10) sd_journal_local_only
11) sd_journal_open
12) sd_journal_open_directory
13) sd_journal_open_directory_fd
14) sd_journal_open_files
15) sd_journal_open_files_fd
16) sd_journal_open_namespace
17) SD_JOURNAL_OS_ROOT
18) sd_journal_os_root
19) SD_JOURNAL_RUNTIME_ONLY
20) sd_journal_runtime_only
21) SD_JOURNAL_SYSTEM
22) sd_journal_system
