sd_journal_has_runtime_files, sd_journal_has_persistent_files − Query availability of runtime or persistent journal files
#include <elogind/sd−journal.h>
int sd_journal_has_runtime_files(sd_journal *j); |
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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.
As elogind does not create journal files, the return value will always be 0.
Both sd_journal_has_runtime_files() and sd_journal_has_persistent_files() return −EINVAL if their argument is NULL.
These APIs are implemented as a shared library, which can be compiled and linked to with the libelogind pkg-config(1) file.
sd-journal(3)