SD_JOURNAL_HAS_RUNTIME_FILES(3)

NAME
sd_journal_has_runtime_files, sd_journal_has_persistent_files - Query availability of runtime or persistent journal files.

SYNOPSIS

#include <systemd/sd-journal.h>

int sd_journal_has_runtime_files(sd_journal *j);

int sd_journal_has_persistent_files(sd_journal *j);

DESCRIPTION

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.

RETURN VALUE

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

NOTES

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.

SEE ALSO

sd-journal(3)