| 136 | }; |
| 137 | |
| 138 | void |
| 139 | timespec2fattime(const struct timespec *tsp, int utc, uint16_t *ddp, |
| 140 | uint16_t *dtp, uint8_t *dhp) |
| 141 | { |
| 142 | time_t t1; |
| 143 | unsigned t2, l, m; |
| 144 | |
| 145 | t1 = tsp->tv_sec; |
| 146 | if (!utc) |
| 147 | t1 -= utc_offset(); |
| 148 | |
| 149 | if (dhp != NULL) |
| 150 | *dhp = (tsp->tv_sec & 1) * 100 + tsp->tv_nsec / 10000000; |
| 151 | if (dtp != NULL) { |
| 152 | *dtp = (t1 / 2) % 30; |
| 153 | *dtp |= ((t1 / 60) % 60) << 5; |
| 154 | *dtp |= ((t1 / 3600) % 24) << 11; |
| 155 | } |
| 156 | if (ddp != NULL) { |
| 157 | t2 = t1 / DAY; |
| 158 | if (t2 < T1980) { |
| 159 | /* Impossible date, truncate to 1980-01-01 */ |
| 160 | *ddp = 0x0021; |
| 161 | } else { |
| 162 | t2 -= T1980; |
| 163 | |
| 164 | /* |
| 165 | * 2100 is not a leap year. |
| 166 | * XXX: a 32 bit time_t can not get us here. |
| 167 | */ |
| 168 | if (t2 >= ((2100 - 1980) / 4 * LYC + FEB)) |
| 169 | t2++; |
| 170 | |
| 171 | /* Account for full leapyear cycles */ |
| 172 | l = t2 / LYC; |
| 173 | *ddp = (l * 4) << 9; |
| 174 | t2 -= l * LYC; |
| 175 | |
| 176 | /* Find approximate table entry */ |
| 177 | m = t2 / 32; |
| 178 | |
| 179 | /* Find correct table entry */ |
| 180 | while (m < 47 && mtab[m + 1].days <= t2) |
| 181 | m++; |
| 182 | |
| 183 | /* Get year + month from the table */ |
| 184 | *ddp += mtab[m].coded; |
| 185 | |
| 186 | /* And apply the day in the month */ |
| 187 | t2 -= mtab[m].days - 1; |
| 188 | *ddp |= t2; |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * Table indexed by the bottom two bits of year + four bits of the month |
nothing calls this directly
no test coverage detected