sd_journal_has_runtime_files, sd_journal_has_persistent_files — Query availability of runtime or persistent journal files.
#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 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.