sd_journal_has_runtime_files(3) — Linux manual page


SD_JOUR...E_FILES(3)  sd_journal_has_runtime_files  SD_JOUR...E_FILES(3)

NAME         top

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

SYNOPSIS         top

       #include <systemd/sd-journal.h>

       int sd_journal_has_runtime_files(sd_journal *j);

       int sd_journal_has_persistent_files(sd_journal *j);

DESCRIPTION         top

       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         top

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

NOTES         top

       All functions listed here are thread-agnostic and only a single
       specific thread may operate on a given object during its entire
       lifetime. It's safe to allocate multiple independent objects and
       use each from a specific thread in parallel. However, it's not
       safe to allocate such an object in one thread, and operate or
       free it from any other, even if locking is used to ensure these
       threads don't operate on it at the very same time.

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

HISTORY         top

       sd_journal_has_runtime_files() and
       sd_journal_has_persistent_files() were added in version 229.

SEE ALSO         top


COLOPHON         top

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systemd 257~devel                                   SD_JOUR...E_FILES(3)

Pages that refer to this page: sd-journal(3)systemd.directives(7)systemd.index(7)