'\" t
.TH "SD_JOURNAL_GET_FD" "3" "" "elogind 246.9.1" "sd_journal_get_fd"
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.nh
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.SH "NAME"
sd_journal_get_fd, sd_journal_get_events, sd_journal_get_timeout, sd_journal_process, sd_journal_wait, sd_journal_reliable_fd \- Journal change notification interface
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <elogind/sd\-journal\&.h>
.fi
.ft
.HP \w'int\ sd_journal_get_fd('u
.BI "int sd_journal_get_fd(sd_journal\ *" "j" ");"
.HP \w'int\ sd_journal_get_events('u
.BI "int sd_journal_get_events(sd_journal\ *" "j" ");"
.HP \w'int\ sd_journal_get_timeout('u
.BI "int sd_journal_get_timeout(sd_journal\ *" "j" ", uint64_t\ *" "timeout_usec" ");"
.HP \w'int\ sd_journal_process('u
.BI "int sd_journal_process(sd_journal\ *" "j" ");"
.HP \w'int\ sd_journal_wait('u
.BI "int sd_journal_wait(sd_journal\ *" "j" ", uint64_t\ " "timeout_usec" ");"
.HP \w'int\ sd_journal_reliable_fd('u
.BI "int sd_journal_reliable_fd(sd_journal\ *" "j" ");"
.SH "DESCRIPTION"
.PP
As elogind can not open any systemd journals, the functions
\fBsd_journal_get_fd\fR,
\fBsd_journal_get_events\fR,
\fBsd_journal_get_timeout\fR,
\fBsd_journal_process\fR,
\fBsd_journal_wait\fR
and
\fBsd_journal_reliable_fd\fR
do nothing\&.
.SH "RETURN VALUE"
.PP
All of the functions
\fBsd_journal_get_fd\fR,
\fBsd_journal_get_events\fR,
\fBsd_journal_get_timeout\fR,
\fBsd_journal_process\fR
and
\fBsd_journal_wait\fR
return \-ENOSYS\&.
\fBsd_journal_reliable_fd\fR
returns 1\&.
.SH "SEE ALSO"
.PP

\fBelogind\fR(8),

\fBsd_journal_open\fR(3),
\fBsd_journal_next\fR(3),
\fBpoll\fR(2),
\fBclock_gettime\fR(2)