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[PATCH 09/21] fs: cifs: Replace CURRENT_TIME by get_seconds

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  [PATCH 09/21] fs: cifs: Replace CURRENT_TIME by get_seconds Deepa Dinamani <deepa.kernel@gmail.com> - 2016-06-09 07:10 +0200

#1418067 — [PATCH 09/21] fs: cifs: Replace CURRENT_TIME by get_seconds

This is in preparation for the change that transitions
filesystem timestamps to use 64 bit time and hence make
them y2038 safe.

CURRENT_TIME macro will be deleted before merging the
aforementioned patch.

Filesystems will use current_fs_time() instead of
CURRENT_TIME.
Use get_seconds() here as this is not filesystem time.
Only the seconds portion of the timestamp is necessary for
timezone calculation using server time.

Assume that the difference between server and client times
lie in the range INT_MIN..INT_MAX. This is valid because
this is the difference between current times between server
and client, and the largest timezone difference is in the
range of one day.

All cifs timestamps currently use timespec internally.
This timestamp can also be transitioned into using
timespec64 when all other timestamps for cifs is transitioned
to use timespec64.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Steve French <sfrench@samba.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
---
 fs/cifs/cifssmb.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index d47197e..aeae6a0 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -478,14 +478,14 @@ decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
 		 * this requirement.
 		 */
 		int val, seconds, remain, result;
-		struct timespec ts, utc;
-		utc = CURRENT_TIME;
+		struct timespec ts;
+		unsigned long utc = get_seconds();
 		ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
 				    rsp->SrvTime.Time, 0);
 		cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n",
-			 (int)ts.tv_sec, (int)utc.tv_sec,
-			 (int)(utc.tv_sec - ts.tv_sec));
-		val = (int)(utc.tv_sec - ts.tv_sec);
+			 (int)ts.tv_sec, (int)utc,
+			 (int)(utc - ts.tv_sec));
+		val = (int)(utc - ts.tv_sec);
 		seconds = abs(val);
 		result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
 		remain = seconds % MIN_TZ_ADJ;
-- 
1.9.1

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