sd_journal_has_runtime_files - Man Page

#include <systemd/sd-journal​.h>

int sd_journal_has_runtime_files(sd_journal *j);

int sd_journal_has_persistent_files(sd_journal *j);

sd_journal_has_runtime_files() returns a positive value if runtime journal files (present in /run/systemd/journal/) have been found​. Otherwise, returns 0​.

sd_journal_has_persistent_files() returns a positive value if persistent journal files (present in /var/log/journal/) have been found​. Otherwise, returns 0​.

Both sd_journal_has_runtime_files() and sd_journal_has_persistent_files() return -EINVAL if their argument is NULL​.

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_has_runtime_files() and sd_journal_has_persistent_files() were added in version 229​.

systemd(1), sd-journal(3)

sd-journal(3), systemd.directives(7), systemd.index(7).

The man page sd_journal_has_persistent_files(3) is an alias of sd_journal_has_runtime_files(3).