linux-kernel - [PATCH 04/10] fs: cifs: Replace CURRENT_TIME with ktime_get_real

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Date:	Tue,  2 Feb 2016 22:07:44 -0800
From:	Deepa Dinamani <deepa.kernel@...il.com>
To:	linux-fsdevel@...r.kernel.org, y2038@...ts.linaro.org
Cc:	Arnd Bergmann <arnd@...db.de>, Dave Chinner <david@...morbit.com>,
	"Theodore Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org,
	Steve French <sfrench@...ba.org>, linux-cifs@...r.kernel.org,
	samba-technical@...ts.samba.org
Subject: [PATCH 04/10] fs: cifs: Replace CURRENT_TIME with ktime_get_real_ts()

This is in preparation for the series 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 series.

Filesystem times will use current_fs_time() instead of
CURRENT_TIME.
Use ktime_get_real_ts() here as this is not filesystem time.
ktime_get_real_ts() returns the timestamp in ns which can
be used to calculate network time for NTLMv2 authentication
timestamp.

Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Cc: Steve French <sfrench@...ba.org>
Cc: linux-cifs@...r.kernel.org
Cc: samba-technical@...ts.samba.org
---
 fs/cifs/cifsencrypt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index d411654..f86e07d 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -460,6 +460,7 @@ find_timestamp(struct cifs_ses *ses)
 	unsigned char *blobptr;
 	unsigned char *blobend;
 	struct ntlmssp2_name *attrptr;
+	struct timespec ts;
 
 	if (!ses->auth_key.len || !ses->auth_key.response)
 		return 0;
@@ -484,7 +485,8 @@ find_timestamp(struct cifs_ses *ses)
 		blobptr += attrsize; /* advance attr value */
 	}
 
-	return cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+	ktime_get_real_ts(&ts);
+	return cpu_to_le64(cifs_UnixTimeToNT(ts));
 }
 
 static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
-- 
1.9.1