lunaix-os/kernel/fs/iso9660/utils.c

   1 #include <lunaix/fs/iso9660.h>
   2
   3 struct iso_drecord*
   4 iso9660_get_drecord(struct iso_var_mdu* drecord_mdu)
   5 {
   6     if (drecord_mdu->len <= sizeof(struct iso_drecord)) {
   7         return NULL;
   8     }
   9     return (struct iso_drecord*)drecord_mdu->content;
  10 }
  11
  12 #define FOUR_DIGIT(x) (x[0] + x[1] * 10 + x[2] * 100 + x[3] * 1000)
  13 #define TWO_DIGIT(x) (x[0] + x[1] * 10)
  14
  15 time_t
  16 iso9660_dt2unix(struct iso_datetime* isodt)
  17 {
  18     return time_tounix(FOUR_DIGIT(isodt->year),
  19                        TWO_DIGIT(isodt->month),
  20                        TWO_DIGIT(isodt->day),
  21                        TWO_DIGIT(isodt->hour),
  22                        TWO_DIGIT(isodt->min),
  23                        TWO_DIGIT(isodt->sec));
  24 }
  25
  26 time_t
  27 iso9660_dt22unix(struct iso_datetime2* isodt2)
  28 {
  29     return time_tounix(isodt2->year + 1900,
  30                        isodt2->month,
  31                        isodt2->day,
  32                        isodt2->hour,
  33                        isodt2->min,
  34                        isodt2->sec);
  35 }