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       1                 :             : /*
       2                 :             :  * Copyright (c) 2016, Citrix Systems, Inc.
       3                 :             :  *
       4                 :             :  * All rights reserved.
       5                 :             :  *
       6                 :             :  * Redistribution and use in source and binary forms, with or without
       7                 :             :  * modification, are permitted provided that the following conditions are met:
       8                 :             :  * 
       9                 :             :  *  1. Redistributions of source code must retain the above copyright
      10                 :             :  *     notice, this list of conditions and the following disclaimer.
      11                 :             :  *  2. Redistributions in binary form must reproduce the above copyright
      12                 :             :  *     notice, this list of conditions and the following disclaimer in the
      13                 :             :  *     documentation and/or other materials provided with the distribution.
      14                 :             :  *  3. Neither the name of the copyright holder nor the names of its 
      15                 :             :  *     contributors may be used to endorse or promote products derived from 
      16                 :             :  *     this software without specific prior written permission.
      17                 :             :  *
      18                 :             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      19                 :             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      20                 :             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      21                 :             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
      22                 :             :  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
      23                 :             :  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
      24                 :             :  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
      25                 :             :  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
      26                 :             :  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
      27                 :             :  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
      28                 :             :  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      29                 :             :  */
      30                 :             : 
      31                 :             : #ifdef HAVE_CONFIG_H
      32                 :             : #include "config.h"
      33                 :             : #endif
      34                 :             : 
      35                 :             : #include <stdio.h>
      36                 :             : #include <errno.h>
      37                 :             : #include <stdlib.h>
      38                 :             : #include <string.h>
      39                 :             : #include <getopt.h>
      40                 :             : 
      41                 :             : #include "tap-ctl.h"
      42                 :             : 
      43                 :             : int
      44                 :           0 : tap_ctl_attach(const int id, const int minor)
      45                 :             : {
      46                 :           0 :         int err;
      47                 :           0 :         tapdisk_message_t message;
      48                 :             : 
      49                 :           0 :         memset(&message, 0, sizeof(message));
      50                 :           0 :         message.type = TAPDISK_MESSAGE_ATTACH;
      51                 :           0 :         message.cookie = minor;
      52                 :             : 
      53                 :           0 :         err = tap_ctl_connect_send_and_receive(id, &message, NULL);
      54         [ #  # ]:           0 :         if (err)
      55                 :           0 :                 return err;
      56                 :             : 
      57         [ #  # ]:           0 :         if (message.type == TAPDISK_MESSAGE_ATTACH_RSP) {
      58                 :           0 :                 err = message.u.response.error;
      59         [ #  # ]:           0 :                 if (err)
      60                 :           0 :                         EPRINTF("attach failed: %d\n", err);
      61                 :             :         } else {
      62                 :           0 :                 EPRINTF("got unexpected result '%s' from %d\n",
      63                 :             :                         tapdisk_message_name(message.type), id);
      64                 :             :                 err = EINVAL;
      65                 :             :         }
      66                 :             : 
      67                 :             :         return err;
      68                 :             : }