sd_journal_get_usage systemd sd_journal_get_usage 3 sd_journal_get_usage Journal disk usage #include <systemd/sd-journal.h> int sd_journal_get_usage sd_journal *j uint64_t *bytes Description sd_journal_get_usage() determines the total disk space currently used by journal files (in bytes). If SD_JOURNAL_LOCAL_ONLY was passed when opening the journal, this value will only reflect the size of journal files of the local host, otherwise of all hosts. Return Value sd_journal_get_usage() returns 0 on success or a negative errno-style error code. Notes See Also systemd1, sd-journal3, sd_journal_open3,