[CIFS] readdir (ffirst) enablement of accurate timestamps from legacy servers
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index fa5124d..3d86b31 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -918,45 +918,42 @@
{
return cpu_to_le64(cifs_UnixTimeToNT(cnvrtDosUnixTm(date, time)));
}
+
struct timespec cnvrtDosUnixTm(__u16 date, __u16 time)
{
- __u8 dt[2];
- __u8 tm[2];
struct timespec ts;
- int sec,min, days, month, year;
- struct timespec removeme; /* BB removeme BB */
-/* SMB_TIME * st = (SMB_TIME *)&time;*/
+ int sec, min, days, month, year;
+ SMB_TIME * st = (SMB_TIME *)&time;
+ SMB_DATE * sd = (SMB_DATE *)&date;
cFYI(1,("date %d time %d",date, time));
- dt[0] = date & 0xFF;
- dt[1] = (date & 0xFF00) >> 8;
- tm[0] = time & 0xFF;
- tm[1] = (time & 0xFF00) >> 8;
-
- sec = tm[0] & 0x1F;
- sec = 2 * sec;
- min = ((tm[0] >>5)&0xFF) + ((tm[1] & 0x7)<<3);
-
+ sec = 2 * st->TwoSeconds;
+ min = st->Minutes;
+ if((sec > 59) || (min > 59))
+ cERROR(1,("illegal time min %d sec %d", min, sec));
sec += (min * 60);
- sec += 60 * 60 * ((tm[1] >> 3) &0xFF) /* hours */;
- days = (dt[0] & 0x1F) - 1;
- month = ((dt[0] >> 5) & 0xFF) + ((dt[1] & 0x1) <<3);
- if(month > 12)
- cERROR(1,("illegal month %d in date", month));
+ sec += 60 * 60 * st->Hours;
+ if(st->Hours > 24)
+ cERROR(1,("illegal hours %d",st->Hours));
+ days = sd->Day;
+ month = sd->Month;
+ if((days > 31) || (month > 12))
+ cERROR(1,("illegal date, month %d day: %d", month, days));
month -= 1;
days += total_days_of_prev_months[month];
days += 3653; /* account for difference in days between 1980 and 1970 */
- year = (dt[1]>>1) & 0xFF;
+ year = sd->Year;
days += year * 365;
days += (year/4); /* leap year */
/* adjust for leap year where we are still before leap day */
days -= ((year & 0x03) == 0) && (month < 2 ? 1 : 0);
sec += 24 * 60 * 60 * days;
- removeme = CURRENT_TIME; /* BB removeme BB */
ts.tv_sec = sec;
+ /* cFYI(1,("sec after cnvrt dos to unix time %d",sec)); */
+
ts.tv_nsec = 0;
return ts;
}