libcsupport/src/__gettod.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  *  @file
0005  *
0006  *  @brief Get the Date and Time
0007  *  @ingroup libcsupport
0008  */
0009
0010 /*
0011  *  COPYRIGHT (c) 1989-2007.
0012  *  On-Line Applications Research Corporation (OAR).
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #ifdef HAVE_CONFIG_H
0037 #include "config.h"
0038 #endif
0039
0040 #if defined(RTEMS_NEWLIB)
0041 /*
0042  *  Needed to get the prototype for the newlib helper method
0043  */
0044 #define _LIBC
0045
0046 #include <sys/time.h>
0047 #include <reent.h>
0048 #include <errno.h>
0049 #include <rtems/score/todimpl.h>
0050 #include <rtems/seterr.h>
0051
0052 #if defined(RTEMS_NEWLIB) && !defined(HAVE_GETTIMEOFDAY)
0053
0054 /**
0055  *  SVR4 and BSD4.3 extension required by Newlib
0056  *
0057  *  @note The solaris gettimeofday does not have a second parameter.
0058  */
0059 int gettimeofday(
0060   struct timeval *__restrict tp,
0061   void *__restrict __tz RTEMS_UNUSED
0062 )
0063 {
0064   /* struct timezone* tzp = (struct timezone*) __tz; */
0065   if ( !tp )
0066     rtems_set_errno_and_return_minus_one( EFAULT );
0067
0068   /*
0069    *  POSIX does not seem to allow for not having a TOD so we just
0070    *  grab the time of day.
0071    */
0072   _TOD_Get_timeval( tp );
0073
0074   /*
0075    *  Timezone information ignored by the OS proper.   Per email
0076    *  with Eric Norum, this is how GNU/Linux, Solaris, and MacOS X
0077    *  do it.  This puts us in good company.
0078    */
0079
0080   return 0;
0081 }
0082 #endif
0083
0084 #if defined(RTEMS_NEWLIB) && !defined(HAVE__GETTIMEOFDAY_R)
0085
0086 #include <sys/reent.h>
0087
0088 /**
0089  *  "Reentrant" version
0090  */
0091 int _gettimeofday_r(
0092   struct _reent   *ignored_reentrancy_stuff RTEMS_UNUSED,
0093   struct timeval  *tp,
0094   void           *__tz
0095 )
0096 {
0097   struct timezone *tzp = __tz;
0098   return gettimeofday( tp, tzp );
0099 }
0100 #endif
0101
0102 #endif /* defined(RTEMS_NEWLIB) */