-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.0 (the 'License'). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License."
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-#if defined(LIBC_SCCS) && !defined(lint)
-#if 0
-static char elsieid[] = "@(#)zdump.c 7.24";
-#else
-static char rcsid[] = "$OpenBSD: zdump.c,v 1.5 1997/01/21 04:52:45 millert Exp $";
-#endif
-#endif /* LIBC_SCCS and not lint */
+static const char elsieid[] = "@(#)zdump.c 7.31";
+
+#ifndef lint
+static const char rcsid[] =
+ "$FreeBSD: src/usr.sbin/zic/zdump.c,v 1.10 2008/02/19 07:09:19 ru Exp $";
+#endif /* not lint */
/*
** This code has been made independent of the rest of the time
** You can use this code to help in verifying other implementations.
*/
-#include "stdio.h" /* for stdout, stderr, perror */
-#include "string.h" /* for strcpy */
-#include "sys/types.h" /* for time_t */
-#include "time.h" /* for struct tm */
-#include "stdlib.h" /* for exit, malloc, atoi */
+#include <err.h>
+#include <stdio.h> /* for stdout, stderr */
+#include <stdlib.h> /* for exit, malloc, atoi */
+#include <string.h> /* for strcpy */
+#include <sys/types.h> /* for time_t */
+#include <time.h> /* for struct tm */
+#include <unistd.h>
+#include <limits.h>
#ifndef MAX_STRING_LENGTH
#define MAX_STRING_LENGTH 1024
#define TZ_DOMAIN "tz"
#endif /* !defined TZ_DOMAIN */
+#ifndef P
+#ifdef __STDC__
+#define P(x) x
+#endif /* defined __STDC__ */
+#ifndef __STDC__
+#define P(x) ()
+#endif /* !defined __STDC__ */
+#endif /* !defined P */
+
extern char ** environ;
-extern int getopt();
-extern char * optarg;
-extern int optind;
-extern time_t time();
extern char * tzname[2];
-static char * abbr();
-static long delta();
-static time_t hunt();
-static int longest;
-static char * progname;
-static void show();
+static char * abbr P((struct tm * tmp));
+static long delta P((struct tm * newp, struct tm * oldp));
+static time_t hunt P((char * name, time_t lot, time_t hit));
+static size_t longest;
+static void show P((char * zone, time_t t, int v));
+static void usage(void);
int
main(argc, argv)
time_t now;
time_t t;
time_t newt;
+#ifndef __APPLE__
+// <rdar://problem/6013740>
+// The approach of walking through every day from the minimum
+// possible time_t value to the maximum possible time_t value
+// falls apart with 64-bit time_t (takes too long to iterate,
+// and causes gmtime(3) and localtime(3) to return EOVERFLOW
+// which this code does not anticipate). Limiting the time_t
+// range to [INT_MIN:INT_MAX] even on LP64.
time_t hibit;
+#endif
struct tm tm;
struct tm newtm;
#endif /* defined(TEXTDOMAINDIR) */
(void) textdomain(TZ_DOMAIN);
#endif /* HAVE_GETTEXT - 0 */
- progname = argv[0];
+ for (i = 1; i < argc; ++i)
+ if (strcmp(argv[i], "--version") == 0) {
+ errx(EXIT_SUCCESS, "%s", elsieid);
+ }
vflag = 0;
cutoff = NULL;
while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
if (c == 'v')
vflag = 1;
else cutoff = optarg;
- if (c != EOF ||
+ if ((c != -1) ||
(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
- (void) fprintf(stderr,
-_("%s: usage is %s [ -v ] [ -c cutoff ] zonename ...\n"),
- argv[0], argv[0]);
- (void) exit(EXIT_FAILURE);
+ usage();
}
if (cutoff != NULL) {
int y;
for (i = optind; i < argc; ++i)
if (strlen(argv[i]) > longest)
longest = strlen(argv[i]);
+#ifndef __APPLE__
for (hibit = 1; (hibit << 1) != 0; hibit <<= 1)
continue;
+#endif
{
register int from;
register int to;
sizeof *fakeenv));
if (fakeenv == NULL ||
(fakeenv[0] = (char *) malloc((size_t) (longest +
- 4))) == NULL) {
- (void) perror(progname);
- (void) exit(EXIT_FAILURE);
- }
+ 4))) == NULL)
+ errx(EXIT_FAILURE,
+ _("malloc() failed"));
to = 0;
(void) strcpy(fakeenv[to++], "TZ=");
for (from = 0; environ[from] != NULL; ++from)
static char buf[MAX_STRING_LENGTH];
(void) strcpy(&fakeenv[0][3], argv[i]);
- show(argv[i], now, FALSE);
- if (!vflag)
+ if (!vflag) {
+ show(argv[i], now, FALSE);
continue;
+ }
/*
** Get lowest value of t.
*/
+#ifdef __APPLE__
+ t = INT_MIN;
+#else
t = hibit;
if (t > 0) /* time_t is unsigned */
t = 0;
+#endif
show(argv[i], t, TRUE);
t += SECSPERHOUR * HOURSPERDAY;
show(argv[i], t, TRUE);
newt = t + SECSPERHOUR * 12;
if (cutoff != NULL && newt >= cuttime)
break;
+#ifdef __APPLE__
+ if (newt > INT_MAX)
+ break;
+#else
if (newt <= t)
break;
+#endif
newtm = *localtime(&newt);
if (delta(&newtm, &tm) != (newt - t) ||
newtm.tm_isdst != tm.tm_isdst ||
/*
** Get highest value of t.
*/
+#ifdef __APPLE__
+ t = INT_MAX;
+#else
t = ~((time_t) 0);
if (t < 0) /* time_t is signed */
t &= ~hibit;
+#endif
t -= SECSPERHOUR * HOURSPERDAY;
show(argv[i], t, TRUE);
t += SECSPERHOUR * HOURSPERDAY;
show(argv[i], t, TRUE);
}
- if (fflush(stdout) || ferror(stdout)) {
- (void) fprintf(stderr, _("%s: Error writing standard output "),
- argv[0]);
- (void) perror(_("standard output"));
- (void) exit(EXIT_FAILURE);
- }
+ if (fflush(stdout) || ferror(stdout))
+ errx(EXIT_FAILURE, _("error writing standard output"));
exit(EXIT_SUCCESS);
/* gcc -Wall pacifier */
continue;
}
+static void
+usage(void)
+{
+ fprintf(stderr,
+_("usage: zdump [--version] [-v] [-c cutoff] zonename ...\n"));
+ exit(EXIT_FAILURE);
+}
+
static time_t
hunt(name, lot, hit)
char * name;
lotm = *localtime(&lot);
(void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
- loab[(sizeof loab) - 1] = '\0';
while ((hit - lot) >= 2) {
t = lot / 2 + hit / 2;
if (t <= lot)
return result;
}
-extern struct tm * localtime();
-
static void
show(zone, t, v)
char * zone;
{
struct tm * tmp;
- (void) printf("%-*s ", longest, zone);
+ (void) printf("%-*s ", (int) longest, zone);
if (v)
- (void) printf("%.24s GMT = ", asctime(gmtime(&t)));
+ (void) printf("%.24s UTC = ", asctime(gmtime(&t)));
tmp = localtime(&t);
(void) printf("%.24s", asctime(tmp));
if (*abbr(tmp) != '\0')
projects / apple / system_cmds.git / blobdiff