1 /*
2  * Copyright (c) 2008, XenSource Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *     * Redistributions of source code must retain the above copyright
8  *       notice, this list of conditions and the following disclaimer.
9  *     * Redistributions in binary form must reproduce the above copyright
10  *       notice, this list of conditions and the following disclaimer in the
11  *       documentation and/or other materials provided with the distribution.
12  *     * Neither the name of XenSource Inc. nor the names of its contributors
13  *       may be used to endorse or promote products derived from this software
14  *       without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
20  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 #include <stdio.h>
29 #include <errno.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <getopt.h>
33 
34 #include "tap-ctl.h"
35 
36 int
tap_ctl_detach(const int id,const int minor)37 tap_ctl_detach(const int id, const int minor)
38 {
39 	int err;
40 	tapdisk_message_t message;
41 
42 	memset(&message, 0, sizeof(message));
43 	message.type = TAPDISK_MESSAGE_DETACH;
44 	message.cookie = minor;
45 
46 	err = tap_ctl_connect_send_and_receive(id, &message, 5);
47 	if (err)
48 		return err;
49 
50 	if (message.type == TAPDISK_MESSAGE_DETACH_RSP) {
51 		err = message.u.response.error;
52 		if (err < 0)
53 			printf("detach failed: %d\n", err);
54 	} else {
55 		printf("got unexpected result '%s' from %d\n",
56 		       tapdisk_message_name(message.type), id);
57 		err = EINVAL;
58 	}
59 
60 	return err;
61 }
62