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qemu/tests/libqtest.c

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/*
* QTest
*
* Copyright IBM, Corp. 2012
* Copyright Red Hat, Inc. 2012
* Copyright SUSE LINUX Products GmbH 2013
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
* Paolo Bonzini <pbonzini@redhat.com>
* Andreas Färber <afaerber@suse.de>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/un.h>
#include "libqtest.h"
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qapi/qmp/json-parser.h"
#include "qapi/qmp/json-streamer.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/qlist.h"
#include "qapi/qmp/qstring.h"
#define MAX_IRQ 256
#define SOCKET_TIMEOUT 50
QTestState *global_qtest;
struct QTestState
{
int fd;
int qmp_fd;
bool irq_level[MAX_IRQ];
GString *rx;
pid_t qemu_pid; /* our child QEMU process */
bool big_endian;
};
static GHookList abrt_hooks;
static struct sigaction sigact_old;
#define g_assert_no_errno(ret) do { \
g_assert_cmpint(ret, !=, -1); \
} while (0)
static int qtest_query_target_endianness(QTestState *s);
static int init_socket(const char *socket_path)
{
struct sockaddr_un addr;
int sock;
int ret;
sock = socket(PF_UNIX, SOCK_STREAM, 0);
g_assert_no_errno(sock);
addr.sun_family = AF_UNIX;
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path);
qemu_set_cloexec(sock);
do {
ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
} while (ret == -1 && errno == EINTR);
g_assert_no_errno(ret);
ret = listen(sock, 1);
g_assert_no_errno(ret);
return sock;
}
static int socket_accept(int sock)
{
struct sockaddr_un addr;
socklen_t addrlen;
int ret;
struct timeval timeout = { .tv_sec = SOCKET_TIMEOUT,
.tv_usec = 0 };
setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout,
sizeof(timeout));
do {
addrlen = sizeof(addr);
ret = accept(sock, (struct sockaddr *)&addr, &addrlen);
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
fprintf(stderr, "%s failed: %s\n", __func__, strerror(errno));
}
close(sock);
return ret;
}
static void kill_qemu(QTestState *s)
{
if (s->qemu_pid != -1) {
int wstatus = 0;
pid_t pid;
kill(s->qemu_pid, SIGTERM);
TFR(pid = waitpid(s->qemu_pid, &wstatus, 0));
assert(pid == s->qemu_pid);
/*
* We expect qemu to exit with status 0; anything else is
* fishy and should be logged with as much detail as possible.
*/
if (wstatus) {
if (WIFEXITED(wstatus)) {
fprintf(stderr, "%s:%d: kill_qemu() tried to terminate QEMU "
"process but encountered exit status %d\n",
__FILE__, __LINE__, WEXITSTATUS(wstatus));
} else if (WIFSIGNALED(wstatus)) {
int sig = WTERMSIG(wstatus);
const char *signame = strsignal(sig) ?: "unknown ???";
const char *dump = WCOREDUMP(wstatus) ? " (core dumped)" : "";
fprintf(stderr, "%s:%d: kill_qemu() detected QEMU death "
"from signal %d (%s)%s\n",
__FILE__, __LINE__, sig, signame, dump);
}
abort();
}
}
}
static void kill_qemu_hook_func(void *s)
{
kill_qemu(s);
}
static void sigabrt_handler(int signo)
{
g_hook_list_invoke(&abrt_hooks, FALSE);
}
static void setup_sigabrt_handler(void)
{
struct sigaction sigact;
/* Catch SIGABRT to clean up on g_assert() failure */
sigact = (struct sigaction){
.sa_handler = sigabrt_handler,
.sa_flags = SA_RESETHAND,
};
sigemptyset(&sigact.sa_mask);
sigaction(SIGABRT, &sigact, &sigact_old);
}
static void cleanup_sigabrt_handler(void)
{
sigaction(SIGABRT, &sigact_old, NULL);
}
void qtest_add_abrt_handler(GHookFunc fn, const void *data)
{
GHook *hook;
/* Only install SIGABRT handler once */
if (!abrt_hooks.is_setup) {
g_hook_list_init(&abrt_hooks, sizeof(GHook));
}
setup_sigabrt_handler();
hook = g_hook_alloc(&abrt_hooks);
hook->func = fn;
hook->data = (void *)data;
g_hook_prepend(&abrt_hooks, hook);
}
static const char *qtest_qemu_binary(void)
{
const char *qemu_bin;
qemu_bin = getenv("QTEST_QEMU_BINARY");
if (!qemu_bin) {
fprintf(stderr, "Environment variable QTEST_QEMU_BINARY required\n");
exit(1);
}
return qemu_bin;
}
QTestState *qtest_init_without_qmp_handshake(bool use_oob,
const char *extra_args)
{
QTestState *s;
int sock, qmpsock, i;
gchar *socket_path;
gchar *qmp_socket_path;
gchar *command;
const char *qemu_binary = qtest_qemu_binary();
s = g_new(QTestState, 1);
socket_path = g_strdup_printf("/tmp/qtest-%d.sock", getpid());
qmp_socket_path = g_strdup_printf("/tmp/qtest-%d.qmp", getpid());
/* It's possible that if an earlier test run crashed it might
* have left a stale unix socket lying around. Delete any
* stale old socket to avoid spurious test failures with
* tests/libqtest.c:70:init_socket: assertion failed (ret != -1): (-1 != -1)
*/
unlink(socket_path);
unlink(qmp_socket_path);
sock = init_socket(socket_path);
qmpsock = init_socket(qmp_socket_path);
qtest_add_abrt_handler(kill_qemu_hook_func, s);
s->qemu_pid = fork();
if (s->qemu_pid == 0) {
setenv("QEMU_AUDIO_DRV", "none", true);
command = g_strdup_printf("exec %s "
"-qtest unix:%s,nowait "
"-qtest-log %s "
"-chardev socket,path=%s,nowait,id=char0 "
"-mon chardev=char0,mode=control%s "
"-machine accel=qtest "
"-display none "
"%s", qemu_binary, socket_path,
getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null",
qmp_socket_path, use_oob ? ",x-oob=on" : "",
extra_args ?: "");
execlp("/bin/sh", "sh", "-c", command, NULL);
exit(1);
}
s->fd = socket_accept(sock);
if (s->fd >= 0) {
s->qmp_fd = socket_accept(qmpsock);
}
unlink(socket_path);
unlink(qmp_socket_path);
g_free(socket_path);
g_free(qmp_socket_path);
g_assert(s->fd >= 0 && s->qmp_fd >= 0);
s->rx = g_string_new("");
for (i = 0; i < MAX_IRQ; i++) {
s->irq_level[i] = false;
}
if (getenv("QTEST_STOP")) {
kill(s->qemu_pid, SIGSTOP);
}
/* ask endianness of the target */
s->big_endian = qtest_query_target_endianness(s);
return s;
}
QTestState *qtest_init(const char *extra_args)
{
QTestState *s = qtest_init_without_qmp_handshake(false, extra_args);
QDict *greeting;
/* Read the QMP greeting and then do the handshake */
greeting = qtest_qmp_receive(s);
qobject_unref(greeting);
qobject_unref(qtest_qmp(s, "{ 'execute': 'qmp_capabilities' }"));
return s;
}
QTestState *qtest_vinitf(const char *fmt, va_list ap)
{
char *args = g_strdup_vprintf(fmt, ap);
QTestState *s;
s = qtest_init(args);
g_free(args);
return s;
}
QTestState *qtest_initf(const char *fmt, ...)
{
va_list ap;
QTestState *s;
va_start(ap, fmt);
s = qtest_vinitf(fmt, ap);
va_end(ap);
return s;
}
void qtest_quit(QTestState *s)
{
g_hook_destroy_link(&abrt_hooks, g_hook_find_data(&abrt_hooks, TRUE, s));
/* Uninstall SIGABRT handler on last instance */
cleanup_sigabrt_handler();
kill_qemu(s);
close(s->fd);
close(s->qmp_fd);
g_string_free(s->rx, true);
g_free(s);
}
static void socket_send(int fd, const char *buf, size_t size)
{
size_t offset;
offset = 0;
while (offset < size) {
ssize_t len;
len = write(fd, buf + offset, size - offset);
if (len == -1 && errno == EINTR) {
continue;
}
g_assert_no_errno(len);
g_assert_cmpint(len, >, 0);
offset += len;
}
}
static void socket_sendf(int fd, const char *fmt, va_list ap)
{
gchar *str = g_strdup_vprintf(fmt, ap);
size_t size = strlen(str);
socket_send(fd, str, size);
g_free(str);
}
static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
socket_sendf(s->fd, fmt, ap);
va_end(ap);
}
static GString *qtest_recv_line(QTestState *s)
{
GString *line;
size_t offset;
char *eol;
while ((eol = strchr(s->rx->str, '\n')) == NULL) {
ssize_t len;
char buffer[1024];
len = read(s->fd, buffer, sizeof(buffer));
if (len == -1 && errno == EINTR) {
continue;
}
if (len == -1 || len == 0) {
fprintf(stderr, "Broken pipe\n");
abort();
}
g_string_append_len(s->rx, buffer, len);
}
offset = eol - s->rx->str;
line = g_string_new_len(s->rx->str, offset);
g_string_erase(s->rx, 0, offset + 1);
return line;
}
static gchar **qtest_rsp(QTestState *s, int expected_args)
{
GString *line;
gchar **words;
int i;
redo:
line = qtest_recv_line(s);
words = g_strsplit(line->str, " ", 0);
g_string_free(line, TRUE);
if (strcmp(words[0], "IRQ") == 0) {
long irq;
int ret;
g_assert(words[1] != NULL);
g_assert(words[2] != NULL);
ret = qemu_strtol(words[2], NULL, 0, &irq);
g_assert(!ret);
g_assert_cmpint(irq, >=, 0);
g_assert_cmpint(irq, <, MAX_IRQ);
if (strcmp(words[1], "raise") == 0) {
s->irq_level[irq] = true;
} else {
s->irq_level[irq] = false;
}
g_strfreev(words);
goto redo;
}
g_assert(words[0] != NULL);
g_assert_cmpstr(words[0], ==, "OK");
if (expected_args) {
for (i = 0; i < expected_args; i++) {
g_assert(words[i] != NULL);
}
} else {
g_strfreev(words);
}
return words;
}
static int qtest_query_target_endianness(QTestState *s)
{
gchar **args;
int big_endian;
qtest_sendf(s, "endianness\n");
args = qtest_rsp(s, 1);
g_assert(strcmp(args[1], "big") == 0 || strcmp(args[1], "little") == 0);
big_endian = strcmp(args[1], "big") == 0;
g_strfreev(args);
return big_endian;
}
typedef struct {
JSONMessageParser parser;
QDict *response;
} QMPResponseParser;
static void qmp_response(JSONMessageParser *parser, GQueue *tokens)
{
QMPResponseParser *qmp = container_of(parser, QMPResponseParser, parser);
QObject *obj;
obj = json_parser_parse(tokens, NULL);
if (!obj) {
fprintf(stderr, "QMP JSON response parsing failed\n");
abort();
}
g_assert(!qmp->response);
qmp->response = qobject_to(QDict, obj);
g_assert(qmp->response);
}
QDict *qmp_fd_receive(int fd)
{
QMPResponseParser qmp;
bool log = getenv("QTEST_LOG") != NULL;
qmp.response = NULL;
json_message_parser_init(&qmp.parser, qmp_response);
while (!qmp.response) {
ssize_t len;
char c;
len = read(fd, &c, 1);
if (len == -1 && errno == EINTR) {
continue;
}
if (len == -1 || len == 0) {
fprintf(stderr, "Broken pipe\n");
abort();
}
if (log) {
len = write(2, &c, 1);
}
json_message_parser_feed(&qmp.parser, &c, 1);
}
json_message_parser_destroy(&qmp.parser);
return qmp.response;
}
QDict *qtest_qmp_receive(QTestState *s)
{
return qmp_fd_receive(s->qmp_fd);
}
/**
* Allow users to send a message without waiting for the reply,
* in the case that they choose to discard all replies up until
* a particular EVENT is received.
*/
void qmp_fd_vsend(int fd, const char *fmt, va_list ap)
{
QObject *qobj;
/*
* qobject_from_vjsonf_nofail() chokes on leading 0xff as invalid
* JSON, but tests/test-qga.c needs to send that to test QGA
* synchronization
*/
if (*fmt == '\377') {
socket_send(fd, fmt, 1);
fmt++;
}
/* Going through qobject ensures we escape strings properly */
qobj = qobject_from_vjsonf_nofail(fmt, ap);
/* No need to send anything for an empty QObject. */
if (qobj) {
int log = getenv("QTEST_LOG") != NULL;
QString *qstr = qobject_to_json(qobj);
const char *str;
/*
* BUG: QMP doesn't react to input until it sees a newline, an
* object, or an array. Work-around: give it a newline.
*/
qstring_append_chr(qstr, '\n');
str = qstring_get_str(qstr);
if (log) {
fprintf(stderr, "%s", str);
}
/* Send QMP request */
socket_send(fd, str, qstring_get_length(qstr));
qobject_unref(qstr);
qobject_unref(qobj);
}
}
void qtest_qmp_vsend(QTestState *s, const char *fmt, va_list ap)
{
qmp_fd_vsend(s->qmp_fd, fmt, ap);
}
QDict *qmp_fdv(int fd, const char *fmt, va_list ap)
{
qmp_fd_vsend(fd, fmt, ap);
return qmp_fd_receive(fd);
}
QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
{
qtest_qmp_vsend(s, fmt, ap);
/* Receive reply */
return qtest_qmp_receive(s);
}
QDict *qmp_fd(int fd, const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qmp_fdv(fd, fmt, ap);
va_end(ap);
return response;
}
void qmp_fd_send(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qmp_fd_vsend(fd, fmt, ap);
va_end(ap);
}
QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp(s, fmt, ap);
va_end(ap);
return response;
}
void qtest_qmp_send(QTestState *s, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qtest_qmp_vsend(s, fmt, ap);
va_end(ap);
}
QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event)
{
QDict *response;
for (;;) {
response = qtest_qmp_receive(s);
if ((qdict_haskey(response, "event")) &&
(strcmp(qdict_get_str(response, "event"), event) == 0)) {
return response;
}
qobject_unref(response);
}
}
void qtest_qmp_eventwait(QTestState *s, const char *event)
{
QDict *response;
response = qtest_qmp_eventwait_ref(s, event);
qobject_unref(response);
}
char *qtest_vhmp(QTestState *s, const char *fmt, va_list ap)
{
char *cmd;
QDict *resp;
char *ret;
cmd = g_strdup_vprintf(fmt, ap);
resp = qtest_qmp(s, "{'execute': 'human-monitor-command',"
" 'arguments': {'command-line': %s}}",
cmd);
ret = g_strdup(qdict_get_try_str(resp, "return"));
while (ret == NULL && qdict_get_try_str(resp, "event")) {
/* Ignore asynchronous QMP events */
qobject_unref(resp);
resp = qtest_qmp_receive(s);
ret = g_strdup(qdict_get_try_str(resp, "return"));
}
g_assert(ret);
qobject_unref(resp);
g_free(cmd);
return ret;
}
char *qtest_hmp(QTestState *s, const char *fmt, ...)
{
va_list ap;
char *ret;
va_start(ap, fmt);
ret = qtest_vhmp(s, fmt, ap);
va_end(ap);
return ret;
}
const char *qtest_get_arch(void)
{
const char *qemu = qtest_qemu_binary();
const char *end = strrchr(qemu, '/');
return end + strlen("/qemu-system-");
}
bool qtest_get_irq(QTestState *s, int num)
{
/* dummy operation in order to make sure irq is up to date */
qtest_inb(s, 0);
return s->irq_level[num];
}
static int64_t qtest_clock_rsp(QTestState *s)
{
gchar **words;
int64_t clock;
words = qtest_rsp(s, 2);
clock = g_ascii_strtoll(words[1], NULL, 0);
g_strfreev(words);
return clock;
}
int64_t qtest_clock_step_next(QTestState *s)
{
qtest_sendf(s, "clock_step\n");
return qtest_clock_rsp(s);
}
int64_t qtest_clock_step(QTestState *s, int64_t step)
{
qtest_sendf(s, "clock_step %"PRIi64"\n", step);
return qtest_clock_rsp(s);
}
int64_t qtest_clock_set(QTestState *s, int64_t val)
{
qtest_sendf(s, "clock_set %"PRIi64"\n", val);
return qtest_clock_rsp(s);
}
void qtest_irq_intercept_out(QTestState *s, const char *qom_path)
{
qtest_sendf(s, "irq_intercept_out %s\n", qom_path);
qtest_rsp(s, 0);
}
void qtest_irq_intercept_in(QTestState *s, const char *qom_path)
{
qtest_sendf(s, "irq_intercept_in %s\n", qom_path);
qtest_rsp(s, 0);
}
static void qtest_out(QTestState *s, const char *cmd, uint16_t addr, uint32_t value)
{
qtest_sendf(s, "%s 0x%x 0x%x\n", cmd, addr, value);
qtest_rsp(s, 0);
}
void qtest_outb(QTestState *s, uint16_t addr, uint8_t value)
{
qtest_out(s, "outb", addr, value);
}
void qtest_outw(QTestState *s, uint16_t addr, uint16_t value)
{
qtest_out(s, "outw", addr, value);
}
void qtest_outl(QTestState *s, uint16_t addr, uint32_t value)
{
qtest_out(s, "outl", addr, value);
}
static uint32_t qtest_in(QTestState *s, const char *cmd, uint16_t addr)
{
gchar **args;
int ret;
unsigned long value;
qtest_sendf(s, "%s 0x%x\n", cmd, addr);
args = qtest_rsp(s, 2);
ret = qemu_strtoul(args[1], NULL, 0, &value);
g_assert(!ret && value <= UINT32_MAX);
g_strfreev(args);
return value;
}
uint8_t qtest_inb(QTestState *s, uint16_t addr)
{
return qtest_in(s, "inb", addr);
}
uint16_t qtest_inw(QTestState *s, uint16_t addr)
{
return qtest_in(s, "inw", addr);
}
uint32_t qtest_inl(QTestState *s, uint16_t addr)
{
return qtest_in(s, "inl", addr);
}
static void qtest_write(QTestState *s, const char *cmd, uint64_t addr,
uint64_t value)
{
qtest_sendf(s, "%s 0x%" PRIx64 " 0x%" PRIx64 "\n", cmd, addr, value);
qtest_rsp(s, 0);
}
void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value)
{
qtest_write(s, "writeb", addr, value);
}
void qtest_writew(QTestState *s, uint64_t addr, uint16_t value)
{
qtest_write(s, "writew", addr, value);
}
void qtest_writel(QTestState *s, uint64_t addr, uint32_t value)
{
qtest_write(s, "writel", addr, value);
}
void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value)
{
qtest_write(s, "writeq", addr, value);
}
static uint64_t qtest_read(QTestState *s, const char *cmd, uint64_t addr)
{
gchar **args;
int ret;
uint64_t value;
qtest_sendf(s, "%s 0x%" PRIx64 "\n", cmd, addr);
args = qtest_rsp(s, 2);
ret = qemu_strtou64(args[1], NULL, 0, &value);
g_assert(!ret);
g_strfreev(args);
return value;
}
uint8_t qtest_readb(QTestState *s, uint64_t addr)
{
return qtest_read(s, "readb", addr);
}
uint16_t qtest_readw(QTestState *s, uint64_t addr)
{
return qtest_read(s, "readw", addr);
}
uint32_t qtest_readl(QTestState *s, uint64_t addr)
{
return qtest_read(s, "readl", addr);
}
uint64_t qtest_readq(QTestState *s, uint64_t addr)
{
return qtest_read(s, "readq", addr);
}
static int hex2nib(char ch)
{
if (ch >= '0' && ch <= '9') {
return ch - '0';
} else if (ch >= 'a' && ch <= 'f') {
return 10 + (ch - 'a');
} else if (ch >= 'A' && ch <= 'F') {
return 10 + (ch - 'a');
} else {
return -1;
}
}
void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size)
{
uint8_t *ptr = data;
gchar **args;
size_t i;
if (!size) {
return;
}
qtest_sendf(s, "read 0x%" PRIx64 " 0x%zx\n", addr, size);
args = qtest_rsp(s, 2);
for (i = 0; i < size; i++) {
ptr[i] = hex2nib(args[1][2 + (i * 2)]) << 4;
ptr[i] |= hex2nib(args[1][2 + (i * 2) + 1]);
}
g_strfreev(args);
}
uint64_t qtest_rtas_call(QTestState *s, const char *name,
uint32_t nargs, uint64_t args,
uint32_t nret, uint64_t ret)
{
qtest_sendf(s, "rtas %s %u 0x%"PRIx64" %u 0x%"PRIx64"\n",
name, nargs, args, nret, ret);
qtest_rsp(s, 0);
return 0;
}
void qtest_add_func(const char *str, void (*fn)(void))
{
gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
g_test_add_func(path, fn);
g_free(path);
}
void qtest_add_data_func_full(const char *str, void *data,
void (*fn)(const void *),
GDestroyNotify data_free_func)
{
gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
g_test_add_data_func_full(path, data, fn, data_free_func);
g_free(path);
}
void qtest_add_data_func(const char *str, const void *data,
void (*fn)(const void *))
{
gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
g_test_add_data_func(path, data, fn);
g_free(path);
}
void qtest_bufwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
{
gchar *bdata;
bdata = g_base64_encode(data, size);
qtest_sendf(s, "b64write 0x%" PRIx64 " 0x%zx ", addr, size);
socket_send(s->fd, bdata, strlen(bdata));
socket_send(s->fd, "\n", 1);
qtest_rsp(s, 0);
g_free(bdata);
}
void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size)
{
gchar **args;
size_t len;
qtest_sendf(s, "b64read 0x%" PRIx64 " 0x%zx\n", addr, size);
args = qtest_rsp(s, 2);
g_base64_decode_inplace(args[1], &len);
if (size != len) {
fprintf(stderr, "bufread: asked for %zu bytes but decoded %zu\n",
size, len);
len = MIN(len, size);
}
memcpy(data, args[1], len);
g_strfreev(args);
}
void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
{
const uint8_t *ptr = data;
size_t i;
char *enc;
if (!size) {
return;
}
enc = g_malloc(2 * size + 1);
for (i = 0; i < size; i++) {
sprintf(&enc[i * 2], "%02x", ptr[i]);
}
qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x%s\n", addr, size, enc);
qtest_rsp(s, 0);
g_free(enc);
}
void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size)
{
qtest_sendf(s, "memset 0x%" PRIx64 " 0x%zx 0x%02x\n", addr, size, pattern);
qtest_rsp(s, 0);
}
QDict *qmp(const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp(global_qtest, fmt, ap);
va_end(ap);
return response;
}
void qmp_send(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qtest_qmp_vsend(global_qtest, fmt, ap);
va_end(ap);
}
char *hmp(const char *fmt, ...)
{
va_list ap;
char *ret;
va_start(ap, fmt);
ret = qtest_vhmp(global_qtest, fmt, ap);
va_end(ap);
return ret;
}
bool qtest_big_endian(QTestState *s)
{
return s->big_endian;
}
void qtest_cb_for_every_machine(void (*cb)(const char *machine))
{
QDict *response, *minfo;
QList *list;
const QListEntry *p;
QObject *qobj;
QString *qstr;
const char *mname;
qtest_start("-machine none");
response = qmp("{ 'execute': 'query-machines' }");
g_assert(response);
list = qdict_get_qlist(response, "return");
g_assert(list);
for (p = qlist_first(list); p; p = qlist_next(p)) {
minfo = qobject_to(QDict, qlist_entry_obj(p));
g_assert(minfo);
qobj = qdict_get(minfo, "name");
g_assert(qobj);
qstr = qobject_to(QString, qobj);
g_assert(qstr);
mname = qstring_get_str(qstr);
cb(mname);
}
qtest_end();
qobject_unref(response);
}
QDict *qtest_qmp_receive_success(QTestState *s,
void (*event_cb)(void *opaque,
const char *event,
QDict *data),
void *opaque)
{
QDict *response, *ret, *data;
const char *event;
for (;;) {
response = qtest_qmp_receive(s);
g_assert(!qdict_haskey(response, "error"));
ret = qdict_get_qdict(response, "return");
if (ret) {
break;
}
event = qdict_get_str(response, "event");
data = qdict_get_qdict(response, "data");
if (event_cb) {
event_cb(opaque, event, data);
}
qobject_unref(response);
}
qobject_ref(ret);
qobject_unref(response);
return ret;
}
/*
* Generic hot-plugging test via the device_add QMP command.
*/
void qtest_qmp_device_add(const char *driver, const char *id,
const char *fmt, ...)
{
QDict *args, *response;
va_list ap;
va_start(ap, fmt);
args = qdict_from_vjsonf_nofail(fmt, ap);
va_end(ap);
g_assert(!qdict_haskey(args, "driver") && !qdict_haskey(args, "id"));
qdict_put_str(args, "driver", driver);
qdict_put_str(args, "id", id);
response = qmp("{'execute': 'device_add', 'arguments': %p}", args);
g_assert(response);
g_assert(!qdict_haskey(response, "event")); /* We don't expect any events */
g_assert(!qdict_haskey(response, "error"));
qobject_unref(response);
}
static void device_deleted_cb(void *opaque, const char *name, QDict *data)
{
bool *got_event = opaque;
g_assert_cmpstr(name, ==, "DEVICE_DELETED");
*got_event = true;
}
/*
* Generic hot-unplugging test via the device_del QMP command.
* Device deletion will get one response and one event. For example:
*
* {'execute': 'device_del','arguments': { 'id': 'scsi-hd'}}
*
* will get this one:
*
* {"timestamp": {"seconds": 1505289667, "microseconds": 569862},
* "event": "DEVICE_DELETED", "data": {"device": "scsi-hd",
* "path": "/machine/peripheral/scsi-hd"}}
*
* and this one:
*
* {"return": {}}
*
* But the order of arrival may vary - so we've got to detect both.
*/
void qtest_qmp_device_del(const char *id)
{
bool got_event = false;
QDict *rsp;
qtest_qmp_send(global_qtest,
"{'execute': 'device_del', 'arguments': {'id': %s}}",
id);
rsp = qtest_qmp_receive_success(global_qtest, device_deleted_cb,
&got_event);
qobject_unref(rsp);
if (!got_event) {
rsp = qmp_receive();
g_assert_cmpstr(qdict_get_try_str(rsp, "event"),
==, "DEVICE_DELETED");
qobject_unref(rsp);
}
}
bool qmp_rsp_is_err(QDict *rsp)
{
QDict *error = qdict_get_qdict(rsp, "error");
qobject_unref(rsp);
return !!error;
}
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