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- /* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <errno.h>
- #include <time.h>
- #include <sys/time.h>
-
- #ifndef HAVE_GNU_LD
- #define __daylight daylight
- #define __timezone timezone
- #define __tzname tzname
- #endif
-
-
- /* Get the current time of day and timezone information,
- putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
- Returns 0 on success, -1 on errors. */
- int
- DEFUN(__gettimeofday, (tv, tz),
- struct timeval *tv AND struct timezone *tz)
- {
- if (tv == NULL)
- {
- errno = EINVAL;
- return -1;
- }
-
- tv->tv_sec = (long int) time ((time_t *) NULL);
- tv->tv_usec = 0L;
-
- if (tz != NULL)
- {
- CONST time_t timer = tv->tv_sec;
- CONST struct tm *tm;
-
- CONST long int save_timezone = __timezone;
- CONST long int save_daylight = __daylight;
- char *save_tzname[2];
- save_tzname[0] = __tzname[0];
- save_tzname[1] = __tzname[1];
-
- tm = localtime (&timer);
-
- tz->tz_minuteswest = __timezone / 60;
- tz->tz_dsttime = __daylight;
-
- __timezone = save_timezone;
- __daylight = save_daylight;
- __tzname[0] = save_tzname[0];
- __tzname[1] = save_tzname[1];
-
- if (tm == NULL)
- return -1;
- }
-
- return 0;
- }
-