1 #ifndef _LINUX_TIME_H 2 #define _LINUX_TIME_H 3 4 #include <rtc.h> 5 #include <vsprintf.h> 6 #include <linux/types.h> 7 8 #define _DEFUN(a,b,c) a(c) 9 #define _CONST const 10 #define _AND , 11 12 #define _REENT_ONLY 13 14 #define SECSPERMIN 60L 15 #define MINSPERHOUR 60L 16 #define HOURSPERDAY 24L 17 #define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) 18 #define SECSPERDAY (SECSPERHOUR * HOURSPERDAY) 19 #define DAYSPERWEEK 7 20 #define MONSPERYEAR 12 21 22 #define YEAR_BASE 1900 23 #define EPOCH_YEAR 1970 24 #define EPOCH_WDAY 4 25 26 #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) 27 28 29 /* Used by other time functions. */ 30 struct tm { 31 int tm_sec; /* Seconds. [0-60] (1 leap second) */ 32 int tm_min; /* Minutes. [0-59] */ 33 int tm_hour; /* Hours. [0-23] */ 34 int tm_mday; /* Day. [1-31] */ 35 int tm_mon; /* Month. [0-11] */ 36 int tm_year; /* Year - 1900. */ 37 int tm_wday; /* Day of week. [0-6] */ 38 int tm_yday; /* Days in year.[0-365] */ 39 int tm_isdst; /* DST. [-1/0/1]*/ 40 41 # ifdef __USE_BSD 42 long int tm_gmtoff; /* Seconds east of UTC. */ 43 __const char *tm_zone; /* Timezone abbreviation. */ 44 # else 45 long int __tm_gmtoff; /* Seconds east of UTC. */ 46 __const char *__tm_zone; /* Timezone abbreviation. */ 47 # endif 48 }; 49 50 static inline char * 51 _DEFUN (asctime_r, (tim_p, result), 52 _CONST struct tm *tim_p _AND 53 char *result) 54 { 55 static _CONST char day_name[7][3] = { 56 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" 57 }; 58 static _CONST char mon_name[12][3] = { 59 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 60 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 61 }; 62 63 sprintf (result, "%.3s %.3s %.2d %.2d:%.2d:%.2d %d\n", 64 day_name[tim_p->tm_wday], 65 mon_name[tim_p->tm_mon], 66 tim_p->tm_mday, tim_p->tm_hour, tim_p->tm_min, 67 tim_p->tm_sec, 1900 + tim_p->tm_year); 68 return result; 69 } 70 71 static inline struct tm * 72 _DEFUN (localtime_r, (tim_p, res), 73 _CONST time_t * tim_p _AND 74 struct tm *res) 75 { 76 static _CONST int mon_lengths[2][MONSPERYEAR] = { 77 {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, 78 {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} 79 } ; 80 81 static _CONST int year_lengths[2] = { 82 365, 83 366 84 } ; 85 86 long days, rem; 87 int y; 88 int yleap; 89 _CONST int *ip; 90 91 days = ((long) *tim_p) / SECSPERDAY; 92 rem = ((long) *tim_p) % SECSPERDAY; 93 while (rem < 0) 94 { 95 rem += SECSPERDAY; 96 --days; 97 } 98 99 /* compute hour, min, and sec */ 100 res->tm_hour = (int) (rem / SECSPERHOUR); 101 rem %= SECSPERHOUR; 102 res->tm_min = (int) (rem / SECSPERMIN); 103 res->tm_sec = (int) (rem % SECSPERMIN); 104 105 /* compute day of week */ 106 if ((res->tm_wday = ((EPOCH_WDAY + days) % DAYSPERWEEK)) < 0) 107 res->tm_wday += DAYSPERWEEK; 108 109 /* compute year & day of year */ 110 y = EPOCH_YEAR; 111 if (days >= 0) 112 { 113 for (;;) 114 { 115 yleap = isleap(y); 116 if (days < year_lengths[yleap]) 117 break; 118 y++; 119 days -= year_lengths[yleap]; 120 } 121 } 122 else 123 { 124 do 125 { 126 --y; 127 yleap = isleap(y); 128 days += year_lengths[yleap]; 129 } while (days < 0); 130 } 131 132 res->tm_year = y - YEAR_BASE; 133 res->tm_yday = days; 134 ip = mon_lengths[yleap]; 135 for (res->tm_mon = 0; days >= ip[res->tm_mon]; ++res->tm_mon) 136 days -= ip[res->tm_mon]; 137 res->tm_mday = days + 1; 138 139 /* set daylight saving time flag */ 140 res->tm_isdst = -1; 141 142 return (res); 143 } 144 145 static inline char * 146 _DEFUN (ctime_r, (tim_p, result), 147 _CONST time_t * tim_p _AND 148 char * result) 149 150 { 151 struct tm tm; 152 return asctime_r (localtime_r (tim_p, &tm), result); 153 } 154 155 /* for compatibility with linux code */ 156 typedef __s64 time64_t; 157 158 #ifdef CONFIG_LIB_DATE 159 time64_t mktime64(const unsigned int year, const unsigned int mon, 160 const unsigned int day, const unsigned int hour, 161 const unsigned int min, const unsigned int sec); 162 #endif 163 164 #endif 165