Branch data Line data Source code
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 <unistd.h>
39 : : #include <string.h>
40 : : #include <getopt.h>
41 : :
42 : : #include "tap-ctl.h"
43 : : #include "util.h"
44 : :
45 : : int
46 : 0 : tap_ctl_unpause(const int id, const int minor, const char *params, int flags,
47 : : char *secondary, const char *logpath)
48 : : {
49 : : int err;
50 : : tapdisk_message_t message;
51 : :
52 : : memset(&message, 0, sizeof(message));
53 : 0 : message.type = TAPDISK_MESSAGE_RESUME;
54 : 0 : message.cookie = minor;
55 : 0 : message.u.params.flags = flags;
56 : :
57 : 0 : if (params)
58 : 0 : safe_strncpy(message.u.params.path, params,
59 : : sizeof(message.u.params.path));
60 : 0 : if (secondary) {
61 : 0 : err = snprintf(message.u.params.secondary,
62 : : sizeof(message.u.params.secondary), "%s",
63 : : secondary);
64 : 0 : if (err >= sizeof(message.u.params.secondary)) {
65 : : EPRINTF("secondary image name too long\n");
66 : 0 : return -ENAMETOOLONG;
67 : : }
68 : : }
69 : 0 : if (logpath) {
70 : 0 : err = tap_ctl_connect_send_receive_ex(id, &message, logpath, 0, NULL, NULL);
71 : : }
72 : : else {
73 : 0 : err = tap_ctl_connect_send_and_receive(id, &message, NULL);
74 : : }
75 : :
76 : 0 : if (err)
77 : : return err;
78 : :
79 : 0 : if (message.type == TAPDISK_MESSAGE_RESUME_RSP
80 : 0 : || message.type == TAPDISK_MESSAGE_ERROR)
81 : 0 : err = -message.u.response.error;
82 : : else {
83 : 0 : EPRINTF("got unexpected result '%s' from %d\n",
84 : : tapdisk_message_name(message.type), id);
85 : : err = -EINVAL;
86 : : }
87 : :
88 : 0 : if (err)
89 : 0 : EPRINTF("unpause failed: %s\n", strerror(-err));
90 : :
91 : 0 : return err;
92 : : }
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