xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[CIFS] Legacy time handling for Win9x and OS/2 part 1

Browse Source 
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2006-09-28 03:35:57 +00:00
parent 0889a9441d
commit 1bd5bbcb65
6 changed files with 80 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
fs/cifs/netmisc.c
View File

@@ -909,3 +909,54 @@ cifs_UnixTimeToNT(struct timespec t)
/* Convert to 100ns intervals and then add the NTFS time offset. */
return (u64) t.tv_sec * 10000000 + t.tv_nsec/100 + NTFS_TIME_OFFSET;
}
static int total_days_of_prev_months[] =
{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
__le64 cnvrtDosCifsTm(__u16 date, __u16 time)
{
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;*/
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 += (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));
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;
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;
ts.tv_nsec = 0;
return ts;
}