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/* Copyright (C) 1992 Aladdin Enterprises. All rights reserved.
This file is part of AFPL Ghostscript.
AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
distributor accepts any responsibility for the consequences of using it, or
for whether it serves any particular purpose or works at all, unless he or
she says so in writing. Refer to the Aladdin Free Public License (the
"License") for full details.
Every copy of AFPL Ghostscript must include a copy of the License, normally
in a plain ASCII text file named PUBLIC. The License grants you the right
to copy, modify and redistribute AFPL Ghostscript, but only under certain
conditions described in the License. Among other things, the License
requires that the copyright notice and this notice be preserved on all
copies.
*/
/*$Id$ */
/* System V Unix-specific routines for Ghostscript */
/* This file contains a couple of standard Unix library procedures */
/* that a few System V platforms don't provide. */
/* Note that this file is NOT used for SVR4 platforms. */
#include <errno.h>
#include "stdio_.h"
#include "time_.h"
#include <sys/types.h>
#include <sys/times.h>
#include <sys/stat.h>
#include <sys/param.h>
/* rename */
int
rename(const char *a, const char *b)
{
if (access(a, 0) == -1)
return (-1);
unlink(b);
if (link(a, b) == -1)
return (-1);
if (unlink(a) == -1) {
unlink(b); /* ??? */
return (-1);
}
return (0);
}
/* gettimeofday */
#ifndef HZ
# define HZ 100 /* see sys/param.h */
#endif
int
gettimeofday(struct timeval *tvp, struct timezone *tzp)
{
struct tms tms;
static long offset = 0;
long ticks;
if (!offset) {
time(&offset);
offset -= (times(&tms) / HZ);
}
ticks = times(&tms);
tvp->tv_sec = ticks / HZ + offset;
tvp->tv_usec = (ticks % HZ) * (1000 * 1000 / HZ);
return 0;
}
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