aboutsummaryrefslogblamecommitdiffstats
path: root/man3/libsimple_gmtime.3
blob: cf7cc85bd9b41cad26d4fb38dc4b10045b267655 (plain) (tree)
1
2
3
4
5
6
7
8
9








                                                                        

                                                                                               


















































































































                                                         


             






                         
.TH LIBSIMPLE_GMTIME 3 libsimple
.SH NAME
libsimple_gmtime \- get the current UTC time with leap second adjustment

.SH SYNOPSIS
.nf
#include <libsimple.h>

int libsimple_gmtime(struct tm *\fItm\fP, struct timespec *\fIts\fP);
inline void libsimple_engmtime(int \fIstatus\fPstruct tm *\fItm\fP, struct timespec *\fIts\fP);
inline void libsimple_egmtime(struct tm *\fItm\fP, struct timespec *\fIts\fP);
.fi
.PP
Link with
.IR \-lsimple .

.SH DESCRIPTION
The
.BR libsimple_gmtime (),
.BR libsimple_engmtime (),
and
.BR libsimple_egmtime ()
functions get the current UTC time, with adjustments
for leap seconds insertions and deletions.
.PP
The
.BR libsimple_engmtime ()
and
.BR libsimple_egmtime ()
functions will terminate the process on failure.
On failure, the process's exit value will be
.I status
if the
.BR libsimple_engmtime ()
function is used or
.IR libsimple_default_failure_exit (3)
if the
.BR libsimple_egmtime ()
fucntion is used.
.PP
The local time is stored in
.IR *tm ,
and the POSIX time (not timezone adjusted),
with leap second adjustments, is stored in
.I *ts
unless
.I ts
is
.IR NULL .
.I tm
may
.I not
be
.RI NULL .

.SH RETURN VALUE
The
.BR libsimple_gmtime ()
function return a 0 upon successful completion;
otherwise the they return -1 and set
.I errno
to indicate the error. The
.BR libsimple_engmtime ()
and
.BR libsimple_egmtime ()
functions terminate the processes on failure.

.SH ERRORS
The
.BR libsimple_gmtime ()
function will fail for the reasons specified for the
.BR gmtime_r (3)
function.
.PP
The
.BR libsimple_engmtime ()
and
.BR libsimple_egmtime ()
functions will terminate the process on failure.

.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l l.
Interface	Attribute	Value
T{
.BR libsimple_gmtime (),
.br
.BR libsimple_engmtime (),
.br
.BR libsimple_egmtime ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_gmtime (),
.br
.BR libsimple_engmtime (),
.br
.BR libsimple_egmtime ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_gmtime (),
.br
.BR libsimple_engmtime (),
.br
.BR libsimple_egmtime ()
T}	Async-cancel safety	AC-Safe
.TE

.SH EXAMPLES
None.

.SH APPLICATION USAGE
None.

.SH RATIONALE
None.

.SH FUTURE DIRECTIONS
None.

.SH NOTES
None.

.SH HISTORY
libsimple 1.2

.SH BUGS
None.

.SH SEE ALSO
.BR libsimple_gmtime (3),
.BR ntp_adjtime (2),
.BR gmtime_r (3)