CIFS: Add SMB2 support for flush

[profile/ivi/kernel-x86-ivi.git] / fs / cifs / smb2pdu.c

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 231e970..ff37406 100644 (file)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1152,3 +1152,41 @@ SMB2_echo(struct TCP_Server_Info *server)
        cifs_small_buf_release(req);
        return rc;
 }
+
+int
+SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
+          u64 volatile_fid)
+{
+       struct smb2_flush_req *req;
+       struct TCP_Server_Info *server;
+       struct cifs_ses *ses = tcon->ses;
+       struct kvec iov[1];
+       int resp_buftype;
+       int rc = 0;
+
+       cFYI(1, "Flush");
+
+       if (ses && (ses->server))
+               server = ses->server;
+       else
+               return -EIO;
+
+       rc = small_smb2_init(SMB2_FLUSH, tcon, (void **) &req);
+       if (rc)
+               return rc;
+
+       req->PersistentFileId = persistent_fid;
+       req->VolatileFileId = volatile_fid;
+
+       iov[0].iov_base = (char *)req;
+       /* 4 for rfc1002 length field */
+       iov[0].iov_len = get_rfc1002_length(req) + 4;
+
+       rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0);
+
+       if ((rc != 0) && tcon)
+               cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
+
+       free_rsp_buf(resp_buftype, iov[0].iov_base);
+       return rc;
+}