vx32

commit 9263ec2461068a950c9c46e1c144377fa1a770ce
parent a3399822252fa6f1c91e8f54eeb14ed13cfbc91e
Author: Jesus Galan Lopez (yiyus) <yiyu.jgl@gmail.com>
Date:   Tue, 14 Sep 2010 22:33:12 +0200

set time from #c/time instead of #r/rtc in bootcode

Diffstat:
A
src/9vx/boot/settime.c
 | 
149
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
src/9vx/bootcode.9
 | 
0

2 files changed, 149 insertions(+), 0 deletions(-)
diff --git a/src/9vx/boot/settime.c b/src/9vx/boot/settime.c
@@ -0,0 +1,149 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+#include <fcall.h>
+#include "../boot/boot.h"
+
+static long lusertime(char*);
+
+char *timeserver = "#s/boot";
+
+void
+settime(int islocal, int afd, char *rp)
+{
+	int n, f;
+	int timeset;
+	Dir dir[2];
+	char timebuf[64];
+
+	print("time...");
+	timeset = 0;
+	if(islocal){
+		/*
+		 *  set the time from the real time clock
+		 */
+		f = open("#c/time", ORDWR);
+		if(f >= 0){
+			if((n = read(f, timebuf, sizeof(timebuf)-1)) > 0){
+				timebuf[n] = '\0';
+				timeset = 1;
+			}
+			close(f);
+		}else do{
+			strcpy(timebuf, "yymmddhhmm[ss]");
+			outin("\ndate/time ", timebuf, sizeof(timebuf));
+		}while((timeset=lusertime(timebuf)) <= 0);
+	}
+	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) < 0){
+			warning("settime mount");
+			close(f);
+			return;
+		}
+		close(f);
+		if(stat("/tmp", statbuf, sizeof statbuf) < 0)
+			fatal("stat");
+		convM2D(statbuf, sizeof statbuf, &dir[0], (char*)&dir[1]);
+		sprint(timebuf, "%ld", dir[0].atime);
+		unmount(0, "/tmp");
+	}
+
+	f = open("#c/time", OWRITE);
+	if(write(f, timebuf, strlen(timebuf)) < 0)
+		warning("can't set #c/time");
+	close(f);
+	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 long
+lusertime(char *argbuf)
+{
+	char *buf;
+	ulong secs;
+	int i, y, m;
+	int *d2m;
+
+	buf = argbuf;
+	i = 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);
+
+	sprint(argbuf, "%ld", secs);
+	return secs;
+}
diff --git a/src/9vx/bootcode.9 b/src/9vx/bootcode.9
Binary files differ.