Provided by: libsystemd-dev_239-7ubuntu10_amd64
sd_journal_get_usage - Journal disk usage
#include <systemd/sd-journal.h> int sd_journal_get_usage(sd_journal *j, uint64_t *bytes);
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.
sd_journal_get_usage() returns 0 on success or a negative errno-style error code.
All functions listed here are thread-agnostic and only a single thread may operate on a given sd_journal object. These APIs are implemented as a shared library, which can be compiled and linked to with the libsystemd pkg-config(1) file.
systemd(1), sd-journal(3), sd_journal_open(3),