1992/0611/boot/settime.c (diff list | history)

boot/settime.c on 1992/0318
1992/0318		#include <u.h> #include <libc.h> #include <fcall.h> #include "../boot/boot.h"
1992/0611		static long lusertime(char*);
1992/0318		void settime(int islocal) { int n, f; int timeset; Dir dir; char dirbuf[DIRLEN]; char *srvname; print("time..."); timeset = 0; if(islocal){ /* * set the time from the real time clock */ f = open("#r/rtc", ORDWR); if(f >= 0){ if((n = read(f, dirbuf, sizeof(dirbuf)-1)) > 0){ dirbuf[n] = 0; timeset = 1; } close(f);
1992/0611		}else do{ strcpy(dirbuf, "yymmddhhmm[ss]"); outin("\ndate/time ", dirbuf, sizeof(dirbuf)); }while((timeset=lusertime(dirbuf)) <= 0);
1992/0318		} if(timeset == 0){ /* * set the time from the access time of the root */ f = open("#s/boot", ORDWR); if(f < 0) return;
1992/0325		if(mount(f, "/n/boot", MREPL, "", sauth) < 0){
1992/0318		close(f); return; } close(f); if(stat("/n/boot", dirbuf) < 0) fatal("stat"); convM2D(dirbuf, &dir); sprint(dirbuf, "%ld", dir.atime); unmount(0, "/n/boot"); /* * set real time clock if there is one */ f = open("#r/rtc", ORDWR); if(f > 0){ write(f, dirbuf, strlen(dirbuf)); close(f); } } f = open("#c/time", OWRITE);
1992/0611		if(write(f, dirbuf, strlen(dirbuf)) < 0) warning("can't set #c/time");
1992/0318		close(f);
1992/0611		} #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 yr) { if((yr % 4) == 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;
1992/0318		}