[PATCH AUTOSEL 6.1 51/53] ksmbd: set v2 lease version on lease upgrade

Sasha Levin
2024-01-22T15:12:28Z

From: Namjae Jeon <linkinjeon@kernel.org>

[ Upstream commit bb05367a66a9990d2c561282f5620bb1dbe40c28 ]

If file opened with v2 lease is upgraded with v1 lease, smb server
should response v2 lease create context to client.
This patch fix smb2.lease.v2_epoch2 test failure.

This test case assumes the following scenario:
1. smb2 create with v2 lease(R, LEASE1 key)
2. smb server return smb2 create response with v2 lease context(R,
LEASE1 key, epoch + 1)
3. smb2 create with v1 lease(RH, LEASE1 key)
4. smb server return smb2 create response with v2 lease context(RH,
LEASE1 key, epoch + 2)

i.e. If same client(same lease key) try to open a file that is being
opened with v2 lease with v1 lease, smb server should return v2 lease.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/oplock.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c
index af0f6914eca4..ebb7d100c851 100644
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -1036,6 +1036,7 @@ static void copy_lease(struct oplock_info *op1, struct oplock_info *op2)
lease2->duration = lease1->duration;
lease2->flags = lease1->flags;
lease2->epoch = lease1->epoch++;
+ lease2->version = lease1->version;
}

static int add_lease_global_list(struct oplock_info *opinfo)
--
2.43.0