sd_journal_get_usage - Man Page

#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 object at any given time​. Different threads may access the same object at different times​. Multiple independent objects may be used from different threads in parallel​.

Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemd ​pkg-config(1) file​.

sd_journal_get_usage() was added in version 190​.

systemd(1), sd-journal(3), sd_journal_open(3)