175 lines
3.2 KiB
C
175 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
|
|
*
|
|
* This file is part of the UCB release of Plan 9. It is subject to the license
|
|
* terms in the LICENSE file found in the top-level directory of this
|
|
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
|
* part of the UCB release of Plan 9, including this file, may be copied,
|
|
* modified, propagated, or distributed except according to the terms contained
|
|
* in the LICENSE file.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <libc.h>
|
|
#include <auth.h>
|
|
#include <9P2000.h>
|
|
#include "../boot/boot.h"
|
|
|
|
static int32_t lusertime(char*);
|
|
|
|
char *timeserver = "#s/boot";
|
|
|
|
static int
|
|
setlocaltime(char* timebuf, int s){
|
|
int n, f, t;
|
|
t=0;
|
|
f = open("#r/rtc", ORDWR);
|
|
if(f >= 0){
|
|
if((n = read(f, timebuf, s-1)) > 0){
|
|
timebuf[n] = '\0';
|
|
t = 1;
|
|
}
|
|
close(f);
|
|
}else do{
|
|
jehanne_strcpy(timebuf, "yymmddhhmm[ss]");
|
|
outin("\ndate/time ", timebuf, s);
|
|
}while((t=lusertime(timebuf)) <= 0);
|
|
return t;
|
|
}
|
|
|
|
|
|
void
|
|
settime(int islocal, int afd, char *rp)
|
|
{
|
|
int f;
|
|
int timeset;
|
|
Dir dir[2];
|
|
char timebuf[64];
|
|
|
|
jehanne_print("time...");
|
|
timeset = 0;
|
|
if(islocal){
|
|
/*
|
|
* set the time from the real time clock
|
|
*/
|
|
timeset=setlocaltime(timebuf, sizeof(timebuf));
|
|
}
|
|
if(timeset == 0){
|
|
/*
|
|
* set the time from the access time of the root
|
|
*/
|
|
f = open(timeserver, ORDWR);
|
|
if(f < 0)
|
|
return;
|
|
if(mount(f, afd, "/tmp", MREPL, rp, '9') < 0){
|
|
warning("settime mount");
|
|
close(f);
|
|
if((!islocal) && (setlocaltime(timebuf, sizeof(timebuf)) == 0))
|
|
return;
|
|
} else {
|
|
close(f);
|
|
if(jehanne_stat("/tmp", statbuf, sizeof statbuf) < 0)
|
|
fatal("stat");
|
|
jehanne_convM2D(statbuf, sizeof statbuf, &dir[0], (char*)&dir[1]);
|
|
jehanne_sprint(timebuf, "%ld", dir[0].atime);
|
|
unmount(0, "/tmp");
|
|
}
|
|
}
|
|
|
|
if((!islocal) && (jehanne_strcmp(timebuf,"0")==0))
|
|
setlocaltime(timebuf, sizeof(timebuf));
|
|
|
|
f = open("#c/time", OWRITE);
|
|
if(write(f, timebuf, jehanne_strlen(timebuf)) < 0)
|
|
warning("can't set #c/time");
|
|
close(f);
|
|
jehanne_print("\n");
|
|
}
|
|
|
|
#define SEC2MIN 60L
|
|
#define SEC2HOUR (60L*SEC2MIN)
|
|
#define SEC2DAY (24L*SEC2HOUR)
|
|
|
|
int
|
|
g2(char **pp)
|
|
{
|
|
int v;
|
|
|
|
v = 10*((*pp)[0]-'0') + (*pp)[1]-'0';
|
|
*pp += 2;
|
|
return v;
|
|
}
|
|
|
|
/*
|
|
* days per month plus days/year
|
|
*/
|
|
static int dmsize[] =
|
|
{
|
|
365, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
|
|
};
|
|
static int ldmsize[] =
|
|
{
|
|
366, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
|
|
};
|
|
|
|
/*
|
|
* return the days/month for the given year
|
|
*/
|
|
static int *
|
|
yrsize(int y)
|
|
{
|
|
|
|
if((y%4) == 0 && ((y%100) != 0 || (y%400) == 0))
|
|
return ldmsize;
|
|
else
|
|
return dmsize;
|
|
}
|
|
|
|
/*
|
|
* compute seconds since Jan 1 1970
|
|
*/
|
|
static int32_t
|
|
lusertime(char *argbuf)
|
|
{
|
|
char *buf;
|
|
uint32_t secs;
|
|
int i, y, m;
|
|
int *d2m;
|
|
|
|
buf = argbuf;
|
|
i = jehanne_strlen(buf);
|
|
if(i != 10 && i != 12)
|
|
return -1;
|
|
secs = 0;
|
|
y = g2(&buf);
|
|
m = g2(&buf);
|
|
if(y < 70)
|
|
y += 2000;
|
|
else
|
|
y += 1900;
|
|
|
|
/*
|
|
* seconds per year
|
|
*/
|
|
for(i = 1970; i < y; i++){
|
|
d2m = yrsize(i);
|
|
secs += d2m[0] * SEC2DAY;
|
|
}
|
|
|
|
/*
|
|
* seconds per month
|
|
*/
|
|
d2m = yrsize(y);
|
|
for(i = 1; i < m; i++)
|
|
secs += d2m[i] * SEC2DAY;
|
|
|
|
secs += (g2(&buf)-1) * SEC2DAY;
|
|
secs += g2(&buf) * SEC2HOUR;
|
|
secs += g2(&buf) * SEC2MIN;
|
|
if(*buf)
|
|
secs += g2(&buf);
|
|
|
|
jehanne_sprint(argbuf, "%ld", secs);
|
|
return secs;
|
|
}
|