tests/libqtest.c

   1 /*
   2  * QTest
   3  *
   4  * Copyright IBM, Corp. 2012
   5  * Copyright Red Hat, Inc. 2012
   6  * Copyright SUSE LINUX Products GmbH 2013
   7  *
   8  * Authors:
   9  *  Anthony Liguori   <aliguori@us.ibm.com>
  10  *  Paolo Bonzini     <pbonzini@redhat.com>
  11  *  Andreas Färber    <afaerber@suse.de>
  12  *
  13  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  14  * See the COPYING file in the top-level directory.
  15  */
  16
  17 #include "qemu/osdep.h"
  18
  19 #include <sys/socket.h>
  20 #include <sys/wait.h>
  21 #include <sys/un.h>
  22
  23 #include "libqtest.h"
  24 #include "qemu/cutils.h"
  25 #include "qapi/error.h"
  26 #include "qapi/qmp/json-parser.h"
  27 #include "qapi/qmp/json-streamer.h"
  28 #include "qapi/qmp/qdict.h"
  29 #include "qapi/qmp/qjson.h"
  30 #include "qapi/qmp/qlist.h"
  31 #include "qapi/qmp/qstring.h"
  32
  33 #define MAX_IRQ 256
  34 #define SOCKET_TIMEOUT 50
  35
  36 QTestState *global_qtest;
  37
  38 struct QTestState
  39 {
  40     int fd;
  41     int qmp_fd;
  42     bool irq_level[MAX_IRQ];
  43     GString *rx;
  44     pid_t qemu_pid;  /* our child QEMU process */
  45     bool big_endian;
  46 };
  47
  48 static GHookList abrt_hooks;
  49 static struct sigaction sigact_old;
  50
  51 #define g_assert_no_errno(ret) do { \
  52     g_assert_cmpint(ret, !=, -1); \
  53 } while (0)
  54
  55 static int qtest_query_target_endianness(QTestState *s);
  56
  57 static int init_socket(const char *socket_path)
  58 {
  59     struct sockaddr_un addr;
  60     int sock;
  61     int ret;
  62
  63     sock = socket(PF_UNIX, SOCK_STREAM, 0);
  64     g_assert_no_errno(sock);
  65
  66     addr.sun_family = AF_UNIX;
  67     snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path);
  68     qemu_set_cloexec(sock);
  69
  70     do {
  71         ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
  72     } while (ret == -1 && errno == EINTR);
  73     g_assert_no_errno(ret);
  74     ret = listen(sock, 1);
  75     g_assert_no_errno(ret);
  76
  77     return sock;
  78 }
  79
  80 static int socket_accept(int sock)
  81 {
  82     struct sockaddr_un addr;
  83     socklen_t addrlen;
  84     int ret;
  85     struct timeval timeout = { .tv_sec = SOCKET_TIMEOUT,
  86                                .tv_usec = 0 };
  87
  88     setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout,
  89                sizeof(timeout));
  90
  91     do {
  92         addrlen = sizeof(addr);
  93         ret = accept(sock, (struct sockaddr *)&addr, &addrlen);
  94     } while (ret == -1 && errno == EINTR);
  95     if (ret == -1) {
  96         fprintf(stderr, "%s failed: %s\n", __func__, strerror(errno));
  97     }
  98     close(sock);
  99
 100     return ret;
 101 }
 102
 103 static void kill_qemu(QTestState *s)
 104 {
 105     if (s->qemu_pid != -1) {
 106         int wstatus = 0;
 107         pid_t pid;
 108
 109         kill(s->qemu_pid, SIGTERM);
 110         pid = waitpid(s->qemu_pid, &wstatus, 0);
 111
 112         if (pid == s->qemu_pid && WIFSIGNALED(wstatus)) {
 113             assert(!WCOREDUMP(wstatus));
 114         }
 115     }
 116 }
 117
 118 static void kill_qemu_hook_func(void *s)
 119 {
 120     kill_qemu(s);
 121 }
 122
 123 static void sigabrt_handler(int signo)
 124 {
 125     g_hook_list_invoke(&abrt_hooks, FALSE);
 126 }
 127
 128 static void setup_sigabrt_handler(void)
 129 {
 130     struct sigaction sigact;
 131
 132     /* Catch SIGABRT to clean up on g_assert() failure */
 133     sigact = (struct sigaction){
 134         .sa_handler = sigabrt_handler,
 135         .sa_flags = SA_RESETHAND,
 136     };
 137     sigemptyset(&sigact.sa_mask);
 138     sigaction(SIGABRT, &sigact, &sigact_old);
 139 }
 140
 141 static void cleanup_sigabrt_handler(void)
 142 {
 143     sigaction(SIGABRT, &sigact_old, NULL);
 144 }
 145
 146 void qtest_add_abrt_handler(GHookFunc fn, const void *data)
 147 {
 148     GHook *hook;
 149
 150     /* Only install SIGABRT handler once */
 151     if (!abrt_hooks.is_setup) {
 152         g_hook_list_init(&abrt_hooks, sizeof(GHook));
 153     }
 154     setup_sigabrt_handler();
 155
 156     hook = g_hook_alloc(&abrt_hooks);
 157     hook->func = fn;
 158     hook->data = (void *)data;
 159
 160     g_hook_prepend(&abrt_hooks, hook);
 161 }
 162
 163 static const char *qtest_qemu_binary(void)
 164 {
 165     const char *qemu_bin;
 166
 167     qemu_bin = getenv("QTEST_QEMU_BINARY");
 168     if (!qemu_bin) {
 169         fprintf(stderr, "Environment variable QTEST_QEMU_BINARY required\n");
 170         exit(1);
 171     }
 172
 173     return qemu_bin;
 174 }
 175
 176 QTestState *qtest_init_without_qmp_handshake(bool use_oob,
 177                                              const char *extra_args)
 178 {
 179     QTestState *s;
 180     int sock, qmpsock, i;
 181     gchar *socket_path;
 182     gchar *qmp_socket_path;
 183     gchar *command;
 184     const char *qemu_binary = qtest_qemu_binary();
 185
 186     s = g_new(QTestState, 1);
 187
 188     socket_path = g_strdup_printf("/tmp/qtest-%d.sock", getpid());
 189     qmp_socket_path = g_strdup_printf("/tmp/qtest-%d.qmp", getpid());
 190
 191     /* It's possible that if an earlier test run crashed it might
 192      * have left a stale unix socket lying around. Delete any
 193      * stale old socket to avoid spurious test failures with
 194      * tests/libqtest.c:70:init_socket: assertion failed (ret != -1): (-1 != -1)
 195      */
 196     unlink(socket_path);
 197     unlink(qmp_socket_path);
 198
 199     sock = init_socket(socket_path);
 200     qmpsock = init_socket(qmp_socket_path);
 201
 202     qtest_add_abrt_handler(kill_qemu_hook_func, s);
 203
 204     s->qemu_pid = fork();
 205     if (s->qemu_pid == 0) {
 206         setenv("QEMU_AUDIO_DRV", "none", true);
 207         command = g_strdup_printf("exec %s "
 208                                   "-qtest unix:%s,nowait "
 209                                   "-qtest-log %s "
 210                                   "-chardev socket,path=%s,nowait,id=char0 "
 211                                   "-mon chardev=char0,mode=control%s "
 212                                   "-machine accel=qtest "
 213                                   "-display none "
 214                                   "%s", qemu_binary, socket_path,
 215                                   getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null",
 216                                   qmp_socket_path, use_oob ? ",x-oob=on" : "",
 217                                   extra_args ?: "");
 218         execlp("/bin/sh", "sh", "-c", command, NULL);
 219         exit(1);
 220     }
 221
 222     s->fd = socket_accept(sock);
 223     if (s->fd >= 0) {
 224         s->qmp_fd = socket_accept(qmpsock);
 225     }
 226     unlink(socket_path);
 227     unlink(qmp_socket_path);
 228     g_free(socket_path);
 229     g_free(qmp_socket_path);
 230
 231     g_assert(s->fd >= 0 && s->qmp_fd >= 0);
 232
 233     s->rx = g_string_new("");
 234     for (i = 0; i < MAX_IRQ; i++) {
 235         s->irq_level[i] = false;
 236     }
 237
 238     if (getenv("QTEST_STOP")) {
 239         kill(s->qemu_pid, SIGSTOP);
 240     }
 241
 242     /* ask endianness of the target */
 243
 244     s->big_endian = qtest_query_target_endianness(s);
 245
 246     return s;
 247 }
 248
 249 QTestState *qtest_init(const char *extra_args)
 250 {
 251     QTestState *s = qtest_init_without_qmp_handshake(false, extra_args);
 252
 253     /* Read the QMP greeting and then do the handshake */
 254     qtest_qmp_discard_response(s, "");
 255     qtest_qmp_discard_response(s, "{ 'execute': 'qmp_capabilities' }");
 256
 257     return s;
 258 }
 259
 260 QTestState *qtest_vstartf(const char *fmt, va_list ap)
 261 {
 262     char *args = g_strdup_vprintf(fmt, ap);
 263     QTestState *s;
 264
 265     s = qtest_start(args);
 266     g_free(args);
 267     global_qtest = NULL;
 268     return s;
 269 }
 270
 271 QTestState *qtest_startf(const char *fmt, ...)
 272 {
 273     va_list ap;
 274     QTestState *s;
 275
 276     va_start(ap, fmt);
 277     s = qtest_vstartf(fmt, ap);
 278     va_end(ap);
 279     return s;
 280 }
 281
 282 void qtest_quit(QTestState *s)
 283 {
 284     g_hook_destroy_link(&abrt_hooks, g_hook_find_data(&abrt_hooks, TRUE, s));
 285
 286     /* Uninstall SIGABRT handler on last instance */
 287     cleanup_sigabrt_handler();
 288
 289     kill_qemu(s);
 290     close(s->fd);
 291     close(s->qmp_fd);
 292     g_string_free(s->rx, true);
 293     g_free(s);
 294 }
 295
 296 static void socket_send(int fd, const char *buf, size_t size)
 297 {
 298     size_t offset;
 299
 300     offset = 0;
 301     while (offset < size) {
 302         ssize_t len;
 303
 304         len = write(fd, buf + offset, size - offset);
 305         if (len == -1 && errno == EINTR) {
 306             continue;
 307         }
 308
 309         g_assert_no_errno(len);
 310         g_assert_cmpint(len, >, 0);
 311
 312         offset += len;
 313     }
 314 }
 315
 316 static void socket_sendf(int fd, const char *fmt, va_list ap)
 317 {
 318     gchar *str = g_strdup_vprintf(fmt, ap);
 319     size_t size = strlen(str);
 320
 321     socket_send(fd, str, size);
 322     g_free(str);
 323 }
 324
 325 static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...)
 326 {
 327     va_list ap;
 328
 329     va_start(ap, fmt);
 330     socket_sendf(s->fd, fmt, ap);
 331     va_end(ap);
 332 }
 333
 334 static GString *qtest_recv_line(QTestState *s)
 335 {
 336     GString *line;
 337     size_t offset;
 338     char *eol;
 339
 340     while ((eol = strchr(s->rx->str, '\n')) == NULL) {
 341         ssize_t len;
 342         char buffer[1024];
 343
 344         len = read(s->fd, buffer, sizeof(buffer));
 345         if (len == -1 && errno == EINTR) {
 346             continue;
 347         }
 348
 349         if (len == -1 || len == 0) {
 350             fprintf(stderr, "Broken pipe\n");
 351             exit(1);
 352         }
 353
 354         g_string_append_len(s->rx, buffer, len);
 355     }
 356
 357     offset = eol - s->rx->str;
 358     line = g_string_new_len(s->rx->str, offset);
 359     g_string_erase(s->rx, 0, offset + 1);
 360
 361     return line;
 362 }
 363
 364 static gchar **qtest_rsp(QTestState *s, int expected_args)
 365 {
 366     GString *line;
 367     gchar **words;
 368     int i;
 369
 370 redo:
 371     line = qtest_recv_line(s);
 372     words = g_strsplit(line->str, " ", 0);
 373     g_string_free(line, TRUE);
 374
 375     if (strcmp(words[0], "IRQ") == 0) {
 376         long irq;
 377         int ret;
 378
 379         g_assert(words[1] != NULL);
 380         g_assert(words[2] != NULL);
 381
 382         ret = qemu_strtol(words[2], NULL, 0, &irq);
 383         g_assert(!ret);
 384         g_assert_cmpint(irq, >=, 0);
 385         g_assert_cmpint(irq, <, MAX_IRQ);
 386
 387         if (strcmp(words[1], "raise") == 0) {
 388             s->irq_level[irq] = true;
 389         } else {
 390             s->irq_level[irq] = false;
 391         }
 392
 393         g_strfreev(words);
 394         goto redo;
 395     }
 396
 397     g_assert(words[0] != NULL);
 398     g_assert_cmpstr(words[0], ==, "OK");
 399
 400     if (expected_args) {
 401         for (i = 0; i < expected_args; i++) {
 402             g_assert(words[i] != NULL);
 403         }
 404     } else {
 405         g_strfreev(words);
 406     }
 407
 408     return words;
 409 }
 410
 411 static int qtest_query_target_endianness(QTestState *s)
 412 {
 413     gchar **args;
 414     int big_endian;
 415
 416     qtest_sendf(s, "endianness\n");
 417     args = qtest_rsp(s, 1);
 418     g_assert(strcmp(args[1], "big") == 0 || strcmp(args[1], "little") == 0);
 419     big_endian = strcmp(args[1], "big") == 0;
 420     g_strfreev(args);
 421
 422     return big_endian;
 423 }
 424
 425 typedef struct {
 426     JSONMessageParser parser;
 427     QDict *response;
 428 } QMPResponseParser;
 429
 430 static void qmp_response(JSONMessageParser *parser, GQueue *tokens)
 431 {
 432     QMPResponseParser *qmp = container_of(parser, QMPResponseParser, parser);
 433     QObject *obj;
 434
 435     obj = json_parser_parse(tokens, NULL);
 436     if (!obj) {
 437         fprintf(stderr, "QMP JSON response parsing failed\n");
 438         exit(1);
 439     }
 440
 441     g_assert(!qmp->response);
 442     qmp->response = qobject_to(QDict, obj);
 443     g_assert(qmp->response);
 444 }
 445
 446 QDict *qmp_fd_receive(int fd)
 447 {
 448     QMPResponseParser qmp;
 449     bool log = getenv("QTEST_LOG") != NULL;
 450
 451     qmp.response = NULL;
 452     json_message_parser_init(&qmp.parser, qmp_response);
 453     while (!qmp.response) {
 454         ssize_t len;
 455         char c;
 456
 457         len = read(fd, &c, 1);
 458         if (len == -1 && errno == EINTR) {
 459             continue;
 460         }
 461
 462         if (len == -1 || len == 0) {
 463             fprintf(stderr, "Broken pipe\n");
 464             exit(1);
 465         }
 466
 467         if (log) {
 468             len = write(2, &c, 1);
 469         }
 470         json_message_parser_feed(&qmp.parser, &c, 1);
 471     }
 472     json_message_parser_destroy(&qmp.parser);
 473
 474     return qmp.response;
 475 }
 476
 477 QDict *qtest_qmp_receive(QTestState *s)
 478 {
 479     return qmp_fd_receive(s->qmp_fd);
 480 }
 481
 482 /**
 483  * Allow users to send a message without waiting for the reply,
 484  * in the case that they choose to discard all replies up until
 485  * a particular EVENT is received.
 486  */
 487 void qmp_fd_sendv(int fd, const char *fmt, va_list ap)
 488 {
 489     va_list ap_copy;
 490     QObject *qobj;
 491
 492     /* qobject_from_jsonv() silently eats leading 0xff as invalid
 493      * JSON, but we want to test sending them over the wire to force
 494      * resyncs */
 495     if (*fmt == '\377') {
 496         socket_send(fd, fmt, 1);
 497         fmt++;
 498     }
 499
 500     /* Going through qobject ensures we escape strings properly.
 501      * This seemingly unnecessary copy is required in case va_list
 502      * is an array type.
 503      */
 504     va_copy(ap_copy, ap);
 505     qobj = qobject_from_jsonv(fmt, &ap_copy, &error_abort);
 506     va_end(ap_copy);
 507
 508     /* No need to send anything for an empty QObject.  */
 509     if (qobj) {
 510         int log = getenv("QTEST_LOG") != NULL;
 511         QString *qstr = qobject_to_json(qobj);
 512         const char *str;
 513
 514         /*
 515          * BUG: QMP doesn't react to input until it sees a newline, an
 516          * object, or an array.  Work-around: give it a newline.
 517          */
 518         qstring_append_chr(qstr, '\n');
 519         str = qstring_get_str(qstr);
 520
 521         if (log) {
 522             fprintf(stderr, "%s", str);
 523         }
 524         /* Send QMP request */
 525         socket_send(fd, str, qstring_get_length(qstr));
 526
 527         qobject_unref(qstr);
 528         qobject_unref(qobj);
 529     }
 530 }
 531
 532 void qtest_async_qmpv(QTestState *s, const char *fmt, va_list ap)
 533 {
 534     qmp_fd_sendv(s->qmp_fd, fmt, ap);
 535 }
 536
 537 QDict *qmp_fdv(int fd, const char *fmt, va_list ap)
 538 {
 539     qmp_fd_sendv(fd, fmt, ap);
 540
 541     return qmp_fd_receive(fd);
 542 }
 543
 544 QDict *qtest_qmpv(QTestState *s, const char *fmt, va_list ap)
 545 {
 546     qtest_async_qmpv(s, fmt, ap);
 547
 548     /* Receive reply */
 549     return qtest_qmp_receive(s);
 550 }
 551
 552 QDict *qmp_fd(int fd, const char *fmt, ...)
 553 {
 554     va_list ap;
 555     QDict *response;
 556
 557     va_start(ap, fmt);
 558     response = qmp_fdv(fd, fmt, ap);
 559     va_end(ap);
 560     return response;
 561 }
 562
 563 void qmp_fd_send(int fd, const char *fmt, ...)
 564 {
 565     va_list ap;
 566
 567     va_start(ap, fmt);
 568     qmp_fd_sendv(fd, fmt, ap);
 569     va_end(ap);
 570 }
 571
 572 QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
 573 {
 574     va_list ap;
 575     QDict *response;
 576
 577     va_start(ap, fmt);
 578     response = qtest_qmpv(s, fmt, ap);
 579     va_end(ap);
 580     return response;
 581 }
 582
 583 void qtest_async_qmp(QTestState *s, const char *fmt, ...)
 584 {
 585     va_list ap;
 586
 587     va_start(ap, fmt);
 588     qtest_async_qmpv(s, fmt, ap);
 589     va_end(ap);
 590 }
 591
 592 void qtest_qmpv_discard_response(QTestState *s, const char *fmt, va_list ap)
 593 {
 594     QDict *response = qtest_qmpv(s, fmt, ap);
 595     qobject_unref(response);
 596 }
 597
 598 void qtest_qmp_discard_response(QTestState *s, const char *fmt, ...)
 599 {
 600     va_list ap;
 601     QDict *response;
 602
 603     va_start(ap, fmt);
 604     response = qtest_qmpv(s, fmt, ap);
 605     va_end(ap);
 606     qobject_unref(response);
 607 }
 608
 609 QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event)
 610 {
 611     QDict *response;
 612
 613     for (;;) {
 614         response = qtest_qmp_receive(s);
 615         if ((qdict_haskey(response, "event")) &&
 616             (strcmp(qdict_get_str(response, "event"), event) == 0)) {
 617             return response;
 618         }
 619         qobject_unref(response);
 620     }
 621 }
 622
 623 void qtest_qmp_eventwait(QTestState *s, const char *event)
 624 {
 625     QDict *response;
 626
 627     response = qtest_qmp_eventwait_ref(s, event);
 628     qobject_unref(response);
 629 }
 630
 631 char *qtest_hmpv(QTestState *s, const char *fmt, va_list ap)
 632 {
 633     char *cmd;
 634     QDict *resp;
 635     char *ret;
 636
 637     cmd = g_strdup_vprintf(fmt, ap);
 638     resp = qtest_qmp(s, "{'execute': 'human-monitor-command',"
 639                      " 'arguments': {'command-line': %s}}",
 640                      cmd);
 641     ret = g_strdup(qdict_get_try_str(resp, "return"));
 642     while (ret == NULL && qdict_get_try_str(resp, "event")) {
 643         /* Ignore asynchronous QMP events */
 644         qobject_unref(resp);
 645         resp = qtest_qmp_receive(s);
 646         ret = g_strdup(qdict_get_try_str(resp, "return"));
 647     }
 648     g_assert(ret);
 649     qobject_unref(resp);
 650     g_free(cmd);
 651     return ret;
 652 }
 653
 654 char *qtest_hmp(QTestState *s, const char *fmt, ...)
 655 {
 656     va_list ap;
 657     char *ret;
 658
 659     va_start(ap, fmt);
 660     ret = qtest_hmpv(s, fmt, ap);
 661     va_end(ap);
 662     return ret;
 663 }
 664
 665 const char *qtest_get_arch(void)
 666 {
 667     const char *qemu = qtest_qemu_binary();
 668     const char *end = strrchr(qemu, '/');
 669
 670     return end + strlen("/qemu-system-");
 671 }
 672
 673 bool qtest_get_irq(QTestState *s, int num)
 674 {
 675     /* dummy operation in order to make sure irq is up to date */
 676     qtest_inb(s, 0);
 677
 678     return s->irq_level[num];
 679 }
 680
 681 static int64_t qtest_clock_rsp(QTestState *s)
 682 {
 683     gchar **words;
 684     int64_t clock;
 685     words = qtest_rsp(s, 2);
 686     clock = g_ascii_strtoll(words[1], NULL, 0);
 687     g_strfreev(words);
 688     return clock;
 689 }
 690
 691 int64_t qtest_clock_step_next(QTestState *s)
 692 {
 693     qtest_sendf(s, "clock_step\n");
 694     return qtest_clock_rsp(s);
 695 }
 696
 697 int64_t qtest_clock_step(QTestState *s, int64_t step)
 698 {
 699     qtest_sendf(s, "clock_step %"PRIi64"\n", step);
 700     return qtest_clock_rsp(s);
 701 }
 702
 703 int64_t qtest_clock_set(QTestState *s, int64_t val)
 704 {
 705     qtest_sendf(s, "clock_set %"PRIi64"\n", val);
 706     return qtest_clock_rsp(s);
 707 }
 708
 709 void qtest_irq_intercept_out(QTestState *s, const char *qom_path)
 710 {
 711     qtest_sendf(s, "irq_intercept_out %s\n", qom_path);
 712     qtest_rsp(s, 0);
 713 }
 714
 715 void qtest_irq_intercept_in(QTestState *s, const char *qom_path)
 716 {
 717     qtest_sendf(s, "irq_intercept_in %s\n", qom_path);
 718     qtest_rsp(s, 0);
 719 }
 720
 721 static void qtest_out(QTestState *s, const char *cmd, uint16_t addr, uint32_t value)
 722 {
 723     qtest_sendf(s, "%s 0x%x 0x%x\n", cmd, addr, value);
 724     qtest_rsp(s, 0);
 725 }
 726
 727 void qtest_outb(QTestState *s, uint16_t addr, uint8_t value)
 728 {
 729     qtest_out(s, "outb", addr, value);
 730 }
 731
 732 void qtest_outw(QTestState *s, uint16_t addr, uint16_t value)
 733 {
 734     qtest_out(s, "outw", addr, value);
 735 }
 736
 737 void qtest_outl(QTestState *s, uint16_t addr, uint32_t value)
 738 {
 739     qtest_out(s, "outl", addr, value);
 740 }
 741
 742 static uint32_t qtest_in(QTestState *s, const char *cmd, uint16_t addr)
 743 {
 744     gchar **args;
 745     int ret;
 746     unsigned long value;
 747
 748     qtest_sendf(s, "%s 0x%x\n", cmd, addr);
 749     args = qtest_rsp(s, 2);
 750     ret = qemu_strtoul(args[1], NULL, 0, &value);
 751     g_assert(!ret && value <= UINT32_MAX);
 752     g_strfreev(args);
 753
 754     return value;
 755 }
 756
 757 uint8_t qtest_inb(QTestState *s, uint16_t addr)
 758 {
 759     return qtest_in(s, "inb", addr);
 760 }
 761
 762 uint16_t qtest_inw(QTestState *s, uint16_t addr)
 763 {
 764     return qtest_in(s, "inw", addr);
 765 }
 766
 767 uint32_t qtest_inl(QTestState *s, uint16_t addr)
 768 {
 769     return qtest_in(s, "inl", addr);
 770 }
 771
 772 static void qtest_write(QTestState *s, const char *cmd, uint64_t addr,
 773                         uint64_t value)
 774 {
 775     qtest_sendf(s, "%s 0x%" PRIx64 " 0x%" PRIx64 "\n", cmd, addr, value);
 776     qtest_rsp(s, 0);
 777 }
 778
 779 void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value)
 780 {
 781     qtest_write(s, "writeb", addr, value);
 782 }
 783
 784 void qtest_writew(QTestState *s, uint64_t addr, uint16_t value)
 785 {
 786     qtest_write(s, "writew", addr, value);
 787 }
 788
 789 void qtest_writel(QTestState *s, uint64_t addr, uint32_t value)
 790 {
 791     qtest_write(s, "writel", addr, value);
 792 }
 793
 794 void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value)
 795 {
 796     qtest_write(s, "writeq", addr, value);
 797 }
 798
 799 static uint64_t qtest_read(QTestState *s, const char *cmd, uint64_t addr)
 800 {
 801     gchar **args;
 802     int ret;
 803     uint64_t value;
 804
 805     qtest_sendf(s, "%s 0x%" PRIx64 "\n", cmd, addr);
 806     args = qtest_rsp(s, 2);
 807     ret = qemu_strtou64(args[1], NULL, 0, &value);
 808     g_assert(!ret);
 809     g_strfreev(args);
 810
 811     return value;
 812 }
 813
 814 uint8_t qtest_readb(QTestState *s, uint64_t addr)
 815 {
 816     return qtest_read(s, "readb", addr);
 817 }
 818
 819 uint16_t qtest_readw(QTestState *s, uint64_t addr)
 820 {
 821     return qtest_read(s, "readw", addr);
 822 }
 823
 824 uint32_t qtest_readl(QTestState *s, uint64_t addr)
 825 {
 826     return qtest_read(s, "readl", addr);
 827 }
 828
 829 uint64_t qtest_readq(QTestState *s, uint64_t addr)
 830 {
 831     return qtest_read(s, "readq", addr);
 832 }
 833
 834 static int hex2nib(char ch)
 835 {
 836     if (ch >= '0' && ch <= '9') {
 837         return ch - '0';
 838     } else if (ch >= 'a' && ch <= 'f') {
 839         return 10 + (ch - 'a');
 840     } else if (ch >= 'A' && ch <= 'F') {
 841         return 10 + (ch - 'a');
 842     } else {
 843         return -1;
 844     }
 845 }
 846
 847 void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size)
 848 {
 849     uint8_t *ptr = data;
 850     gchar **args;
 851     size_t i;
 852
 853     if (!size) {
 854         return;
 855     }
 856
 857     qtest_sendf(s, "read 0x%" PRIx64 " 0x%zx\n", addr, size);
 858     args = qtest_rsp(s, 2);
 859
 860     for (i = 0; i < size; i++) {
 861         ptr[i] = hex2nib(args[1][2 + (i * 2)]) << 4;
 862         ptr[i] |= hex2nib(args[1][2 + (i * 2) + 1]);
 863     }
 864
 865     g_strfreev(args);
 866 }
 867
 868 uint64_t qtest_rtas_call(QTestState *s, const char *name,
 869                          uint32_t nargs, uint64_t args,
 870                          uint32_t nret, uint64_t ret)
 871 {
 872     qtest_sendf(s, "rtas %s %u 0x%"PRIx64" %u 0x%"PRIx64"\n",
 873                 name, nargs, args, nret, ret);
 874     qtest_rsp(s, 0);
 875     return 0;
 876 }
 877
 878 void qtest_add_func(const char *str, void (*fn)(void))
 879 {
 880     gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
 881     g_test_add_func(path, fn);
 882     g_free(path);
 883 }
 884
 885 void qtest_add_data_func_full(const char *str, void *data,
 886                               void (*fn)(const void *),
 887                               GDestroyNotify data_free_func)
 888 {
 889     gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
 890     g_test_add_data_func_full(path, data, fn, data_free_func);
 891     g_free(path);
 892 }
 893
 894 void qtest_add_data_func(const char *str, const void *data,
 895                          void (*fn)(const void *))
 896 {
 897     gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
 898     g_test_add_data_func(path, data, fn);
 899     g_free(path);
 900 }
 901
 902 void qtest_bufwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 903 {
 904     gchar *bdata;
 905
 906     bdata = g_base64_encode(data, size);
 907     qtest_sendf(s, "b64write 0x%" PRIx64 " 0x%zx ", addr, size);
 908     socket_send(s->fd, bdata, strlen(bdata));
 909     socket_send(s->fd, "\n", 1);
 910     qtest_rsp(s, 0);
 911     g_free(bdata);
 912 }
 913
 914 void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size)
 915 {
 916     gchar **args;
 917     size_t len;
 918
 919     qtest_sendf(s, "b64read 0x%" PRIx64 " 0x%zx\n", addr, size);
 920     args = qtest_rsp(s, 2);
 921
 922     g_base64_decode_inplace(args[1], &len);
 923     if (size != len) {
 924         fprintf(stderr, "bufread: asked for %zu bytes but decoded %zu\n",
 925                 size, len);
 926         len = MIN(len, size);
 927     }
 928
 929     memcpy(data, args[1], len);
 930     g_strfreev(args);
 931 }
 932
 933 void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 934 {
 935     const uint8_t *ptr = data;
 936     size_t i;
 937     char *enc;
 938
 939     if (!size) {
 940         return;
 941     }
 942
 943     enc = g_malloc(2 * size + 1);
 944
 945     for (i = 0; i < size; i++) {
 946         sprintf(&enc[i * 2], "%02x", ptr[i]);
 947     }
 948
 949     qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x%s\n", addr, size, enc);
 950     qtest_rsp(s, 0);
 951     g_free(enc);
 952 }
 953
 954 void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size)
 955 {
 956     qtest_sendf(s, "memset 0x%" PRIx64 " 0x%zx 0x%02x\n", addr, size, pattern);
 957     qtest_rsp(s, 0);
 958 }
 959
 960 QDict *qmp(const char *fmt, ...)
 961 {
 962     va_list ap;
 963     QDict *response;
 964
 965     va_start(ap, fmt);
 966     response = qtest_qmpv(global_qtest, fmt, ap);
 967     va_end(ap);
 968     return response;
 969 }
 970
 971 void qmp_async(const char *fmt, ...)
 972 {
 973     va_list ap;
 974
 975     va_start(ap, fmt);
 976     qtest_async_qmpv(global_qtest, fmt, ap);
 977     va_end(ap);
 978 }
 979
 980 void qmp_discard_response(const char *fmt, ...)
 981 {
 982     va_list ap;
 983
 984     va_start(ap, fmt);
 985     qtest_qmpv_discard_response(global_qtest, fmt, ap);
 986     va_end(ap);
 987 }
 988 char *hmp(const char *fmt, ...)
 989 {
 990     va_list ap;
 991     char *ret;
 992
 993     va_start(ap, fmt);
 994     ret = qtest_hmpv(global_qtest, fmt, ap);
 995     va_end(ap);
 996     return ret;
 997 }
 998
 999 bool qtest_big_endian(QTestState *s)
1000 {
1001     return s->big_endian;
1002 }
1003
1004 void qtest_cb_for_every_machine(void (*cb)(const char *machine))
1005 {
1006     QDict *response, *minfo;
1007     QList *list;
1008     const QListEntry *p;
1009     QObject *qobj;
1010     QString *qstr;
1011     const char *mname;
1012
1013     qtest_start("-machine none");
1014     response = qmp("{ 'execute': 'query-machines' }");
1015     g_assert(response);
1016     list = qdict_get_qlist(response, "return");
1017     g_assert(list);
1018
1019     for (p = qlist_first(list); p; p = qlist_next(p)) {
1020         minfo = qobject_to(QDict, qlist_entry_obj(p));
1021         g_assert(minfo);
1022         qobj = qdict_get(minfo, "name");
1023         g_assert(qobj);
1024         qstr = qobject_to(QString, qobj);
1025         g_assert(qstr);
1026         mname = qstring_get_str(qstr);
1027         cb(mname);
1028     }
1029
1030     qtest_end();
1031     qobject_unref(response);
1032 }
1033
1034 /*
1035  * Generic hot-plugging test via the device_add QMP command.
1036  */
1037 void qtest_qmp_device_add(const char *driver, const char *id, const char *fmt,
1038                           ...)
1039 {
1040     QDict *response;
1041     char *cmd, *opts = NULL;
1042     va_list va;
1043
1044     if (fmt) {
1045         va_start(va, fmt);
1046         opts = g_strdup_vprintf(fmt, va);
1047         va_end(va);
1048     }
1049
1050     cmd = g_strdup_printf("{'execute': 'device_add',"
1051                           " 'arguments': { 'driver': '%s', 'id': '%s'%s%s }}",
1052                           driver, id, opts ? ", " : "", opts ? opts : "");
1053     g_free(opts);
1054
1055     response = qmp(cmd);
1056     g_free(cmd);
1057     g_assert(response);
1058     g_assert(!qdict_haskey(response, "event")); /* We don't expect any events */
1059     g_assert(!qdict_haskey(response, "error"));
1060     qobject_unref(response);
1061 }
1062
1063 /*
1064  * Generic hot-unplugging test via the device_del QMP command.
1065  * Device deletion will get one response and one event. For example:
1066  *
1067  * {'execute': 'device_del','arguments': { 'id': 'scsi-hd'}}
1068  *
1069  * will get this one:
1070  *
1071  * {"timestamp": {"seconds": 1505289667, "microseconds": 569862},
1072  *  "event": "DEVICE_DELETED", "data": {"device": "scsi-hd",
1073  *  "path": "/machine/peripheral/scsi-hd"}}
1074  *
1075  * and this one:
1076  *
1077  * {"return": {}}
1078  *
1079  * But the order of arrival may vary - so we've got to detect both.
1080  */
1081 void qtest_qmp_device_del(const char *id)
1082 {
1083     QDict *response1, *response2, *event = NULL;
1084     char *cmd;
1085
1086     cmd = g_strdup_printf("{'execute': 'device_del',"
1087                           " 'arguments': { 'id': '%s' }}", id);
1088     response1 = qmp(cmd);
1089     g_free(cmd);
1090     g_assert(response1);
1091     g_assert(!qdict_haskey(response1, "error"));
1092
1093     response2 = qmp("");
1094     g_assert(response2);
1095     g_assert(!qdict_haskey(response2, "error"));
1096
1097     if (qdict_haskey(response1, "event")) {
1098         event = response1;
1099     } else if (qdict_haskey(response2, "event")) {
1100         event = response2;
1101     }
1102     g_assert(event);
1103     g_assert_cmpstr(qdict_get_str(event, "event"), ==, "DEVICE_DELETED");
1104
1105     qobject_unref(response1);
1106     qobject_unref(response2);
1107 }
1108
1109 bool qmp_rsp_is_err(QDict *rsp)
1110 {
1111     QDict *error = qdict_get_qdict(rsp, "error");
1112     qobject_unref(rsp);
1113     return !!error;
1114 }