These changes are the raw update to qemu-2.6.
[kvmfornfv.git] / qemu / tests / drive_del-test.c
1 /*
2  * blockdev.c test cases
3  *
4  * Copyright (C) 2013-2014 Red Hat Inc.
5  *
6  * Authors:
7  *  Stefan Hajnoczi <stefanha@redhat.com>
8  *
9  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
10  * See the COPYING.LIB file in the top-level directory.
11  */
12
13 #include "qemu/osdep.h"
14 #include <glib.h>
15 #include "libqtest.h"
16
17 static void drive_add(void)
18 {
19     char *resp = hmp("drive_add 0 if=none,id=drive0");
20
21     g_assert_cmpstr(resp, ==, "OK\r\n");
22     g_free(resp);
23 }
24
25 static void drive_del(void)
26 {
27     char *resp = hmp("drive_del drive0");
28
29     g_assert_cmpstr(resp, ==, "");
30     g_free(resp);
31 }
32
33 static void device_del(void)
34 {
35     QDict *response;
36
37     /* Complication: ignore DEVICE_DELETED event */
38     qmp_discard_response("{'execute': 'device_del',"
39                          " 'arguments': { 'id': 'dev0' } }");
40     response = qmp_receive();
41     g_assert(response);
42     g_assert(qdict_haskey(response, "return"));
43     QDECREF(response);
44 }
45
46 static void test_drive_without_dev(void)
47 {
48     /* Start with an empty drive */
49     qtest_start("-drive if=none,id=drive0");
50
51     /* Delete the drive */
52     drive_del();
53
54     /* Ensure re-adding the drive works - there should be no duplicate ID error
55      * because the old drive must be gone.
56      */
57     drive_add();
58
59     qtest_end();
60 }
61
62 static void test_after_failed_device_add(void)
63 {
64     QDict *response;
65     QDict *error;
66
67     qtest_start("-drive if=none,id=drive0");
68
69     /* Make device_add fail.  If this leaks the virtio-blk-pci device then a
70      * reference to drive0 will also be held (via qdev properties).
71      */
72     response = qmp("{'execute': 'device_add',"
73                    " 'arguments': {"
74                    "   'driver': 'virtio-blk-pci',"
75                    "   'drive': 'drive0'"
76                    "}}");
77     g_assert(response);
78     error = qdict_get_qdict(response, "error");
79     g_assert_cmpstr(qdict_get_try_str(error, "class"), ==, "GenericError");
80     QDECREF(response);
81
82     /* Delete the drive */
83     drive_del();
84
85     /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
86      * virtio-blk-pci exists that holds a reference to the old drive0.
87      */
88     drive_add();
89
90     qtest_end();
91 }
92
93 static void test_drive_del_device_del(void)
94 {
95     /* Start with a drive used by a device that unplugs instantaneously */
96     qtest_start("-drive if=none,id=drive0,file=/dev/null,format=raw"
97                 " -device virtio-scsi-pci"
98                 " -device scsi-hd,drive=drive0,id=dev0");
99
100     /*
101      * Delete the drive, and then the device
102      * Doing it in this order takes notoriously tricky special paths
103      */
104     drive_del();
105     device_del();
106
107     qtest_end();
108 }
109
110 int main(int argc, char **argv)
111 {
112     const char *arch = qtest_get_arch();
113
114     g_test_init(&argc, &argv, NULL);
115
116     qtest_add_func("/drive_del/without-dev", test_drive_without_dev);
117
118     /* TODO I guess any arch with PCI would do */
119     if (!strcmp(arch, "i386") || !strcmp(arch, "x86_64")) {
120         qtest_add_func("/drive_del/after_failed_device_add",
121                        test_after_failed_device_add);
122         qtest_add_func("/blockdev/drive_del_device_del",
123                        test_drive_del_device_del);
124     }
125
126     return g_test_run();
127 }