tests/unit/test-yank.c

   1 /*
   2  * Tests for QEMU yank feature
   3  *
   4  * Copyright (c) Lukas Straub <lukasstraub2@web.de>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include <glib/gstdio.h>
  12
  13 #include "qemu/config-file.h"
  14 #include "qemu/module.h"
  15 #include "qemu/option.h"
  16 #include "chardev/char-fe.h"
  17 #include "sysemu/sysemu.h"
  18 #include "qapi/error.h"
  19 #include "qapi/qapi-commands-char.h"
  20 #include "qapi/qapi-types-char.h"
  21 #include "qapi/qapi-commands-yank.h"
  22 #include "qapi/qapi-types-yank.h"
  23 #include "io/channel-socket.h"
  24 #include "socket-helpers.h"
  25
  26 typedef struct {
  27     SocketAddress *addr;
  28     bool old_yank;
  29     bool new_yank;
  30     bool fail;
  31 } CharChangeTestConfig;
  32
  33 static int chardev_change(void *opaque)
  34 {
  35     return 0;
  36 }
  37
  38 static bool is_yank_instance_registered(void)
  39 {
  40     YankInstanceList *list;
  41     bool ret;
  42
  43     list = qmp_query_yank(&error_abort);
  44
  45     ret = !!list;
  46
  47     qapi_free_YankInstanceList(list);
  48
  49     return ret;
  50 }
  51
  52 static gpointer accept_thread(gpointer data)
  53 {
  54     QIOChannelSocket *ioc = data;
  55     QIOChannelSocket *cioc;
  56
  57     cioc = qio_channel_socket_accept(ioc, &error_abort);
  58     object_unref(OBJECT(cioc));
  59
  60     return NULL;
  61 }
  62
  63 static void char_change_test(gconstpointer opaque)
  64 {
  65     CharChangeTestConfig *conf = (gpointer) opaque;
  66     SocketAddress *addr;
  67     Chardev *chr;
  68     CharBackend be;
  69     ChardevReturn *ret;
  70     QIOChannelSocket *ioc;
  71     QemuThread thread;
  72
  73     /*
  74      * Setup a listener socket and determine its address
  75      * so we know the TCP port for the client later
  76      */
  77     ioc = qio_channel_socket_new();
  78     g_assert_nonnull(ioc);
  79     qio_channel_socket_listen_sync(ioc, conf->addr, 1, &error_abort);
  80     addr = qio_channel_socket_get_local_address(ioc, &error_abort);
  81     g_assert_nonnull(addr);
  82
  83     ChardevBackend backend[2] = {
  84         /* doesn't support yank */
  85         { .type = CHARDEV_BACKEND_KIND_NULL },
  86         /* supports yank */
  87         {
  88             .type = CHARDEV_BACKEND_KIND_SOCKET,
  89             .u.socket.data = &(ChardevSocket) {
  90                 .addr = &(SocketAddressLegacy) {
  91                     .type = SOCKET_ADDRESS_LEGACY_KIND_INET,
  92                     .u.inet.data = &addr->u.inet
  93                 },
  94                 .has_server = true,
  95                 .server = false
  96             }
  97         } };
  98
  99     ChardevBackend fail_backend[2] = {
 100         /* doesn't support yank */
 101         {
 102             .type = CHARDEV_BACKEND_KIND_UDP,
 103             .u.udp.data = &(ChardevUdp) {
 104                 .remote = &(SocketAddressLegacy) {
 105                     .type = SOCKET_ADDRESS_LEGACY_KIND_UNIX,
 106                     .u.q_unix.data = &(UnixSocketAddress) {
 107                         .path = (char *)""
 108                     }
 109                 }
 110             }
 111         },
 112         /* supports yank */
 113         {
 114             .type = CHARDEV_BACKEND_KIND_SOCKET,
 115             .u.socket.data = &(ChardevSocket) {
 116                 .addr = &(SocketAddressLegacy) {
 117                     .type = SOCKET_ADDRESS_LEGACY_KIND_INET,
 118                     .u.inet.data = &(InetSocketAddress) {
 119                         .host = (char *)"127.0.0.1",
 120                         .port = (char *)"0"
 121                     }
 122                 },
 123                 .has_server = true,
 124                 .server = false
 125             }
 126         } };
 127
 128     g_assert(!is_yank_instance_registered());
 129
 130     if (conf->old_yank) {
 131         qemu_thread_create(&thread, "accept", accept_thread,
 132                            ioc, QEMU_THREAD_JOINABLE);
 133     }
 134
 135     ret = qmp_chardev_add("chardev", &backend[conf->old_yank], &error_abort);
 136     qapi_free_ChardevReturn(ret);
 137     chr = qemu_chr_find("chardev");
 138     g_assert_nonnull(chr);
 139
 140     g_assert(is_yank_instance_registered() == conf->old_yank);
 141
 142     qemu_chr_wait_connected(chr, &error_abort);
 143     if (conf->old_yank) {
 144         qemu_thread_join(&thread);
 145     }
 146
 147     qemu_chr_fe_init(&be, chr, &error_abort);
 148     /* allow chardev-change */
 149     qemu_chr_fe_set_handlers(&be, NULL, NULL,
 150                              NULL, chardev_change, NULL, NULL, true);
 151
 152     if (conf->fail) {
 153         g_setenv("QTEST_SILENT_ERRORS", "1", 1);
 154         ret = qmp_chardev_change("chardev", &fail_backend[conf->new_yank],
 155                                  NULL);
 156         g_assert_null(ret);
 157         g_assert(be.chr == chr);
 158         g_assert(is_yank_instance_registered() == conf->old_yank);
 159         g_unsetenv("QTEST_SILENT_ERRORS");
 160     } else {
 161         if (conf->new_yank) {
 162                 qemu_thread_create(&thread, "accept", accept_thread,
 163                                    ioc, QEMU_THREAD_JOINABLE);
 164         }
 165         ret = qmp_chardev_change("chardev", &backend[conf->new_yank],
 166                                  &error_abort);
 167         if (conf->new_yank) {
 168             qemu_thread_join(&thread);
 169         }
 170         g_assert_nonnull(ret);
 171         g_assert(be.chr != chr);
 172         g_assert(is_yank_instance_registered() == conf->new_yank);
 173     }
 174
 175     object_unparent(OBJECT(be.chr));
 176     object_unref(OBJECT(ioc));
 177     qapi_free_ChardevReturn(ret);
 178     qapi_free_SocketAddress(addr);
 179 }
 180
 181 static SocketAddress tcpaddr = {
 182     .type = SOCKET_ADDRESS_TYPE_INET,
 183     .u.inet.host = (char *)"127.0.0.1",
 184     .u.inet.port = (char *)"0",
 185 };
 186
 187 int main(int argc, char **argv)
 188 {
 189     bool has_ipv4, has_ipv6;
 190
 191     qemu_init_main_loop(&error_abort);
 192     socket_init();
 193
 194     g_test_init(&argc, &argv, NULL);
 195
 196     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
 197         g_printerr("socket_check_protocol_support() failed\n");
 198         goto end;
 199     }
 200
 201     if (!has_ipv4) {
 202         goto end;
 203     }
 204
 205     module_call_init(MODULE_INIT_QOM);
 206     qemu_add_opts(&qemu_chardev_opts);
 207
 208     g_test_add_data_func("/yank/char_change/success/to_yank",
 209                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 210                                                    .old_yank = false,
 211                                                    .new_yank = true,
 212                                                    .fail = false },
 213                          char_change_test);
 214     g_test_add_data_func("/yank/char_change/fail/to_yank",
 215                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 216                                                    .old_yank = false,
 217                                                    .new_yank = true,
 218                                                    .fail = true },
 219                          char_change_test);
 220
 221     g_test_add_data_func("/yank/char_change/success/yank_to_yank",
 222                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 223                                                    .old_yank = true,
 224                                                    .new_yank = true,
 225                                                    .fail = false },
 226                          char_change_test);
 227     g_test_add_data_func("/yank/char_change/fail/yank_to_yank",
 228                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 229                                                    .old_yank = true,
 230                                                    .new_yank = true,
 231                                                    .fail = true },
 232                          char_change_test);
 233
 234     g_test_add_data_func("/yank/char_change/success/from_yank",
 235                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 236                                                    .old_yank = true,
 237                                                    .new_yank = false,
 238                                                    .fail = false },
 239                          char_change_test);
 240     g_test_add_data_func("/yank/char_change/fail/from_yank",
 241                          &(CharChangeTestConfig) { .addr = &tcpaddr,
 242                                                    .old_yank = true,
 243                                                    .new_yank = false,
 244                                                    .fail = true },
 245                          char_change_test);
 246
 247 end:
 248     return g_test_run();
 249 }