There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
270 lines
7.5 KiB
C
270 lines
7.5 KiB
C
/* $NetBSD: getdate.c,v 1.2 2009/11/22 18:07:39 mbalmer Exp $ */
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/*
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Brian Ginsbach.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <util.h>
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#define TMSENTINEL (-1)
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/*
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* getdate_err is set to one of the following values on error.
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*
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* 1 The DATEMSK environment variable is null or undefined.
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* 2 The template file cannot be opened for reading.
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* 3 Failed to get file status information.
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* 4 Template file is not a regular file.
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* 5 Encountered an error while reading the template file.
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* 6 Cannot allocate memory.
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* 7 Input string does not match any line in the template.
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* 8 Input string is invalid (for example, February 31) or could not
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* be represented in a time_t.
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*/
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int getdate_err;
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struct tm *
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getdate(const char *str)
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{
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char *datemsk, *line, *rp;
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FILE *fp;
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struct stat sb;
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static struct tm rtm, tmnow;
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struct tm *tmp, *rtmp = &rtm;
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size_t lineno = 0;
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time_t now;
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if (((datemsk = getenv("DATEMSK")) == NULL) || *datemsk == '\0') {
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getdate_err = 1;
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return (NULL);
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}
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if (stat(datemsk, &sb) < 0) {
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getdate_err = 3;
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return (NULL);
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}
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if ((sb.st_mode & S_IFMT) != S_IFREG) {
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getdate_err = 4;
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return (NULL);
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}
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if ((fp = fopen(datemsk, "r")) == NULL) {
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getdate_err = 2;
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return (NULL);
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}
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/* loop through datemsk file */
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errno = 0;
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rp = NULL;
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while ((line = fparseln(fp, NULL, &lineno, NULL, 0)) != NULL) {
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/* initialize tmp with sentinels */
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rtm.tm_sec = rtm.tm_min = rtm.tm_hour = TMSENTINEL;
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rtm.tm_mday = rtm.tm_mon = rtm.tm_year = TMSENTINEL;
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rtm.tm_wday = rtm.tm_yday = rtm.tm_isdst = TMSENTINEL;
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rtm.tm_gmtoff = 0;
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rtm.tm_zone = NULL;
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rp = strptime(str, line, rtmp);
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free(line);
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if (rp != NULL)
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break;
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errno = 0;
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}
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if (errno != 0 || ferror(fp)) {
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if (errno == ENOMEM)
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getdate_err = 6;
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else
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getdate_err = 5;
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fclose(fp);
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return (NULL);
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}
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if (feof(fp) || (rp != NULL && *rp != '\0')) {
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getdate_err = 7;
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return (NULL);
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}
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fclose(fp);
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time(&now);
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tmp = localtime(&now);
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tmnow = *tmp;
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/*
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* This implementation does not accept setting the broken-down time
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* to anything other than the localtime(). It is not possible to
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* change the scanned timezone with %Z.
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*
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* Note IRIX and Solaris accept only the current zone for %Z.
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* XXX Is there any implementation that matches the standard?
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* XXX (Or am I reading the standard wrong?)
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*
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* Note: Neither XPG 6 (POSIX 2004) nor XPG 7 (POSIX 2008)
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* requires strptime(3) support for %Z.
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*/
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/*
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* Given only a weekday find the first matching weekday starting
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* with the current weekday and moving into the future.
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*/
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if (rtm.tm_wday != TMSENTINEL && rtm.tm_year == TMSENTINEL &&
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rtm.tm_mon == TMSENTINEL && rtm.tm_mday == TMSENTINEL) {
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rtm.tm_year = tmnow.tm_year;
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rtm.tm_mon = tmnow.tm_mon;
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rtm.tm_mday = tmnow.tm_mday +
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(rtm.tm_wday - tmnow.tm_wday + 7) % 7;
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}
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/*
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* Given only a month (and no year) find the first matching month
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* starting with the current month and moving into the future.
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*/
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if (rtm.tm_mon != TMSENTINEL) {
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if (rtm.tm_year == TMSENTINEL) {
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rtm.tm_year = tmnow.tm_year +
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((rtm.tm_mon < tmnow.tm_mon)? 1 : 0);
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}
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if (rtm.tm_mday == TMSENTINEL) {
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/* assume the first of the month */
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rtm.tm_mday = 1;
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/*
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* XXX This isn't documented! Just observed behavior.
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*
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* Given the weekday find the first matching weekday
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* starting with the weekday of the first day of the
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* the month and moving into the future.
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*/
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if (rtm.tm_wday != TMSENTINEL) {
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struct tm tm;
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memset(&tm, 0, sizeof(struct tm));
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tm.tm_year = rtm.tm_year;
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tm.tm_mon = rtm.tm_mon;
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tm.tm_mday = 1;
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mktime(&tm);
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rtm.tm_mday +=
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(rtm.tm_wday - tm.tm_wday + 7) % 7;
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}
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}
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}
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/*
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* Given no time of day assume the current time of day.
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*/
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if (rtm.tm_hour == TMSENTINEL &&
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rtm.tm_min == TMSENTINEL && rtm.tm_sec == TMSENTINEL) {
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rtm.tm_hour = tmnow.tm_hour;
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rtm.tm_min = tmnow.tm_min;
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rtm.tm_sec = tmnow.tm_sec;
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}
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/*
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* Given an hour and no date, find the first matching hour starting
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* with the current hour and moving into the future
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*/
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if (rtm.tm_hour != TMSENTINEL &&
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rtm.tm_year == TMSENTINEL && rtm.tm_mon == TMSENTINEL &&
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rtm.tm_mday == TMSENTINEL) {
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rtm.tm_year = tmnow.tm_year;
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rtm.tm_mon = tmnow.tm_mon;
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rtm.tm_mday = tmnow.tm_mday;
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if (rtm.tm_hour < tmnow.tm_hour)
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rtm.tm_hour += 24;
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}
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/*
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* Set to 'sane' values; mktime(3) does funny things otherwise.
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* No hours, no minutes, no seconds, no service.
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*/
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if (rtm.tm_hour == TMSENTINEL)
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rtm.tm_hour = 0;
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if (rtm.tm_min == TMSENTINEL)
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rtm.tm_min = 0;
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if (rtm.tm_sec == TMSENTINEL)
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rtm.tm_sec = 0;
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/*
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* Given only a year the values of month, day of month, day of year,
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* week day and is daylight (summer) time are unspecified.
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* (Specified on the Solaris man page not POSIX.)
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*/
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if (rtm.tm_year != TMSENTINEL &&
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rtm.tm_mon == TMSENTINEL && rtm.tm_mday == TMSENTINEL) {
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rtm.tm_mon = 0;
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rtm.tm_mday = 1;
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/*
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* XXX More undocumented functionality but observed.
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*
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* Given the weekday find the first matching weekday
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* starting with the weekday of the first day of the
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* month and moving into the future.
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*/
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if (rtm.tm_wday != TMSENTINEL) {
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struct tm tm;
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memset(&tm, 0, sizeof(struct tm));
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tm.tm_year = rtm.tm_year;
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tm.tm_mon = rtm.tm_mon;
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tm.tm_mday = 1;
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mktime(&tm);
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rtm.tm_mday += (rtm.tm_wday - tm.tm_wday + 7) % 7;
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}
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}
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/*
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* Given only the century but no year within, the current year
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* is assumed. (Specified on the Solaris man page not POSIX.)
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*
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* Warning ugly end case
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*
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* This is more work since strptime(3) doesn't "do the right thing".
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*/
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if (rtm.tm_year != TMSENTINEL && (rtm.tm_year - 1900) >= 0) {
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rtm.tm_year -= 1900;
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rtm.tm_year += (tmnow.tm_year % 100);
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}
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/*
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* mktime() will normalize all values and also check that the
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* value will fit into a time_t.
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*
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* This is only for POSIX correctness. A date >= 1900 is
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* really ok, but using a time_t limits things.
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*/
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if (mktime(rtmp) < 0) {
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getdate_err = 8;
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return (NULL);
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}
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return (rtmp);
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}
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