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CIFS: Add SMB2.1 lease break support

Telusuri Sumber 
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky
2012-09-19 06:22:45 -07:00
committed by Steve French
orang tua 25078105fb
melakukan 0822f51426
6 mengubah file dengan 157 tambahan dan 14 penghapusan
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46
fs/cifs/smb2pdu.c
Melihat File

@@ -911,7 +911,6 @@ parse_lease_state(struct smb2_create_rsp *rsp)
{
char *data_offset;
struct create_lease *lc;
__u8 oplock = 0;
bool found = false;
data_offset = (char *)rsp;
@@ -932,19 +931,9 @@ parse_lease_state(struct smb2_create_rsp *rsp)
} while (le32_to_cpu(lc->ccontext.Next) != 0);
if (!found)
return oplock;
return 0;
if (le32_to_cpu(lc->lcontext.LeaseState) & SMB2_LEASE_WRITE_CACHING) {
if (le32_to_cpu(lc->lcontext.LeaseState) &
SMB2_LEASE_HANDLE_CACHING)
oplock = SMB2_OPLOCK_LEVEL_BATCH;
else
oplock = SMB2_OPLOCK_LEVEL_EXCLUSIVE;
} else if (le32_to_cpu(lc->lcontext.LeaseState) &
SMB2_LEASE_READ_CACHING)
oplock = SMB2_OPLOCK_LEVEL_II;
return oplock;
return smb2_map_lease_to_oplock(lc->lcontext.LeaseState);
}
int
@@ -2228,3 +2217,34 @@ SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon,
return smb2_lockv(xid, tcon, persist_fid, volatile_fid, pid, 1, &lock);
}
int
SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon,
__u8 *lease_key, const __le32 lease_state)
{
int rc;
struct smb2_lease_ack *req = NULL;
cFYI(1, "SMB2_lease_break");
rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req);
if (rc)
return rc;
req->hdr.CreditRequest = cpu_to_le16(1);
req->StructureSize = cpu_to_le16(36);
inc_rfc1001_len(req, 12);
memcpy(req->LeaseKey, lease_key, 16);
req->LeaseState = lease_state;
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, CIFS_OBREAK_OP);
/* SMB2 buffer freed by function above */
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE);
cFYI(1, "Send error in Lease Break = %d", rc);
}
return rc;
}