tests/device-introspect-test.c

   1 /*
   2  * Device introspection test cases
   3  *
   4  * Copyright (c) 2015 Red Hat Inc.
   5  *
   6  * Authors:
   7  *  Markus Armbruster <armbru@redhat.com>,
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 /*
  14  * Covers QMP device-list-properties and HMP device_add help.  We
  15  * currently don't check that their output makes sense, only that QEMU
  16  * survives.  Useful since we've had an astounding number of crash
  17  * bugs around here.
  18  */
  19
  20 #include <glib.h>
  21 #include <stdarg.h>
  22 #include "qemu-common.h"
  23 #include "qapi/qmp/qstring.h"
  24 #include "libqtest.h"
  25
  26 const char common_args[] = "-nodefaults -machine none";
  27
  28 static QList *device_type_list(bool abstract)
  29 {
  30     QDict *resp;
  31     QList *ret;
  32
  33     resp = qmp("{'execute': 'qom-list-types',"
  34                " 'arguments': {'implements': 'device', 'abstract': %i}}",
  35                abstract);
  36     g_assert(qdict_haskey(resp, "return"));
  37     ret = qdict_get_qlist(resp, "return");
  38     QINCREF(ret);
  39     QDECREF(resp);
  40     return ret;
  41 }
  42
  43 static void test_one_device(const char *type)
  44 {
  45     QDict *resp;
  46     char *help, *qom_tree;
  47
  48     /*
  49      * Skip this part for the abstract device test case, because
  50      * device-list-properties crashes for such devices.
  51      * FIXME fix it not to crash
  52      */
  53     if (strcmp(type, "device")) {
  54         resp = qmp("{'execute': 'device-list-properties',"
  55                    " 'arguments': {'typename': %s}}",
  56                    type);
  57         QDECREF(resp);
  58     }
  59
  60     help = hmp("device_add \"%s,help\"", type);
  61     g_free(help);
  62
  63     /*
  64      * Some devices leave dangling pointers in QOM behind.
  65      * "info qom-tree" has a good chance at crashing then
  66      */
  67     qom_tree = hmp("info qom-tree");
  68     g_free(qom_tree);
  69 }
  70
  71 static void test_device_intro_list(void)
  72 {
  73     QList *types;
  74     char *help;
  75
  76     qtest_start(common_args);
  77
  78     types = device_type_list(true);
  79     QDECREF(types);
  80
  81     help = hmp("device_add help");
  82     g_free(help);
  83
  84     qtest_end();
  85 }
  86
  87 static void test_device_intro_none(void)
  88 {
  89     qtest_start(common_args);
  90     test_one_device("nonexistent");
  91     qtest_end();
  92 }
  93
  94 static void test_device_intro_abstract(void)
  95 {
  96     qtest_start(common_args);
  97     test_one_device("device");
  98     qtest_end();
  99 }
 100
 101 static bool blacklisted(const char *type)
 102 {
 103     static const char *blacklist[] = {
 104         /* hang in object_unref(): */
 105         "realview_pci", "versatile_pci",
 106         /* create a CPU, thus use after free (see below): */
 107         "allwinner-a10", "digic", "fsl,imx25", "fsl,imx31", "xlnx,zynqmp",
 108     };
 109     size_t len = strlen(type);
 110     int i;
 111
 112     if (len >= 4 && !strcmp(type + len - 4, "-cpu")) {
 113         /* use after free: cpu_exec_init() saves CPUState in cpus */
 114         return true;
 115     }
 116
 117     for (i = 0; i < ARRAY_SIZE(blacklist); i++) {
 118         if (!strcmp(blacklist[i], type)) {
 119             return true;
 120         }
 121     }
 122     return false;
 123 }
 124
 125 static void test_device_intro_concrete(void)
 126 {
 127     QList *types;
 128     QListEntry *entry;
 129     const char *type;
 130
 131     qtest_start(common_args);
 132     types = device_type_list(false);
 133
 134     QLIST_FOREACH_ENTRY(types, entry) {
 135         type = qdict_get_try_str(qobject_to_qdict(qlist_entry_obj(entry)),
 136                                 "name");
 137         g_assert(type);
 138         if (blacklisted(type)) {
 139             continue;           /* FIXME broken device, skip */
 140         }
 141         test_one_device(type);
 142     }
 143
 144     QDECREF(types);
 145     qtest_end();
 146 }
 147
 148 int main(int argc, char **argv)
 149 {
 150     g_test_init(&argc, &argv, NULL);
 151
 152     qtest_add_func("device/introspect/list", test_device_intro_list);
 153     qtest_add_func("device/introspect/none", test_device_intro_none);
 154     qtest_add_func("device/introspect/abstract", test_device_intro_abstract);
 155     qtest_add_func("device/introspect/concrete", test_device_intro_concrete);
 156
 157     return g_test_run();
 158 }