1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <fcntl.h>
5 #include <string.h>
6 #include <errno.h>
7 #include <time.h>
8 #include <linux/android_alarm.h>
9 #include <sys/ioctl.h>
10
settime(char * s)11 static void settime(char *s) {
12 struct tm tm;
13 int day = atoi(s);
14 int hour;
15 time_t t;
16 int fd;
17 struct timespec ts;
18
19 while (*s && *s != '.')
20 s++;
21
22 if (*s)
23 s++;
24
25 hour = atoi(s);
26
27 tm.tm_year = day / 10000 - 1900;
28 tm.tm_mon = (day % 10000) / 100 - 1;
29 tm.tm_mday = (day % 100);
30 tm.tm_hour = hour / 10000;
31 tm.tm_min = (hour % 10000) / 100;
32 tm.tm_sec = (hour % 100);
33 tm.tm_isdst = -1;
34
35 t = mktime(&tm);
36
37 fd = open("/dev/alarm", O_RDWR);
38 ts.tv_sec = t;
39 ts.tv_nsec = 0;
40 ioctl(fd, ANDROID_ALARM_SET_RTC, &ts);
41 }
42
date_main(int argc,char * argv[])43 int date_main(int argc, char *argv[])
44 {
45 int c;
46 int res;
47 struct tm tm;
48 time_t t;
49 struct timeval tv;
50 struct timespec ts;
51 char strbuf[260];
52 int fd;
53
54 int useutc = 0;
55
56 tzset();
57
58 do {
59 c = getopt(argc, argv, "us:");
60 if (c == EOF)
61 break;
62 switch (c) {
63 case 'u':
64 useutc = 1;
65 break;
66 case 's':
67 settime(optarg);
68 break;
69 case '?':
70 fprintf(stderr, "%s: invalid option -%c\n",
71 argv[0], optopt);
72 exit(1);
73 }
74 } while (1);
75 if(optind + 2 < argc) {
76 fprintf(stderr,"%s [-u] [date]\n", argv[0]);
77 return 1;
78 }
79
80 int hasfmt = argc == optind + 1 && argv[optind][0] == '+';
81 if(optind == argc || hasfmt) {
82 char buf[2000];
83 time(&t);
84 if (useutc) {
85 gmtime_r(&t, &tm);
86 strftime(strbuf, sizeof(strbuf),
87 (hasfmt ? argv[optind] + 1 : "%a %b %e %H:%M:%S GMT %Y"),
88 &tm);
89 } else {
90 localtime_r(&t, &tm);
91 strftime(strbuf, sizeof(strbuf),
92 (hasfmt ? argv[optind] + 1 : "%a %b %e %H:%M:%S %Z %Y"),
93 &tm);
94 }
95 printf("%s\n", strbuf);
96 }
97 else if(optind + 1 == argc) {
98 #if 0
99 struct tm *tmptr;
100 tmptr = getdate(argv[optind]);
101 if(tmptr == NULL) {
102 fprintf(stderr,"getdate_r failed\n");
103 return 1;
104 }
105 tm = *tmptr;
106 #if 0
107 if(getdate_r(argv[optind], &tm) < 0) {
108 fprintf(stderr,"getdate_r failed %s\n", strerror(errno));
109 return 1;
110 }
111 #endif
112 #endif
113 //strptime(argv[optind], NULL, &tm);
114 //tv.tv_sec = mktime(&tm);
115 //tv.tv_usec = 0;
116 strtotimeval(argv[optind], &tv);
117 printf("time %s -> %d.%d\n", argv[optind], tv.tv_sec, tv.tv_usec);
118 fd = open("/dev/alarm", O_RDWR);
119 ts.tv_sec = tv.tv_sec;
120 ts.tv_nsec = tv.tv_usec * 1000;
121 res = ioctl(fd, ANDROID_ALARM_SET_RTC, &ts);
122 //res = settimeofday(&tv, NULL);
123 if(res < 0) {
124 fprintf(stderr,"settimeofday failed %s\n", strerror(errno));
125 return 1;
126 }
127 }
128 else {
129 fprintf(stderr,"%s [-s 20070325.123456] [-u] [date]\n", argv[0]);
130 return 1;
131 }
132
133 return 0;
134 }
135