'\" t
.TH "SD_JOURNAL_HAS_RUNTIME_FILES" "3" "" "systemd 232" "sd_journal_has_runtime_files"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
sd_journal_has_runtime_files, sd_journal_has_persistent_files \- Query availability of runtime or persistent journal files\&.
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <systemd/sd\-journal\&.h>
.fi
.ft
.HP \w'int\ sd_journal_has_runtime_files('u
.BI "int sd_journal_has_runtime_files(sd_journal\ *" "j" ");"
.HP \w'int\ sd_journal_has_persistent_files('u
.BI "int sd_journal_has_persistent_files(sd_journal\ *" "j" ");"
.SH "DESCRIPTION"
.PP
\fBsd_journal_has_runtime_files()\fR
returns a positive value if runtime journal files (present in /run/systemd/journal/) have been found\&. Otherwise returns 0\&.
.PP
\fBsd_journal_has_persistent_files()\fR
returns a positive value if persistent journal files (present in /var/log/journal/) have been found\&. Otherwise returns 0\&.
.SH "RETURN VALUE"
.PP
Both
\fBsd_journal_has_runtime_files()\fR
and
\fBsd_journal_has_persistent_files()\fR
return \-EINVAL if their argument is NULL\&.
.SH "NOTES"
.PP
All functions listed here are thread\-agnostic and only a single thread may operate on a given
sd_journal
object\&.
.PP
Functions listed here are available as a shared library, which can be compiled and linked to with the
\fBlibsystemd\fR\ \&\fBpkg-config\fR(1)
file\&.
.SH "SEE ALSO"
.PP
\fBsd-journal\fR(3)