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qemu/tests/qtest/libqtest.c
Maxim Levitsky d232b87ec6 libqtest: fix memory leak in the qtest_qmp_event_ref 
The g_list_remove_link doesn't free the link element,
opposed to what I thought.
Switch to g_list_delete_link that does free it.

Also refactor the code a bit.
Thanks for Max Reitz for helping me with this.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201019163702.471239-4-mlevitsk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-10-24 07:36:53 +02:00

1441 lines
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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 "libqos/libqtest.h"
#include "qemu-common.h"
#include "qemu/ctype.h"
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qapi/qmp/json-parser.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
#define SOCKET_MAX_FDS 16
typedef void (*QTestSendFn)(QTestState *s, const char *buf);
typedef void (*ExternalSendFn)(void *s, const char *buf);
typedef GString* (*QTestRecvFn)(QTestState *);
typedef struct QTestClientTransportOps {
QTestSendFn send; /* for sending qtest commands */
/*
* use external_send to send qtest command strings through functions which
* do not accept a QTestState as the first parameter.
*/
ExternalSendFn external_send;
QTestRecvFn recv_line; /* for receiving qtest command responses */
} QTestTransportOps;
struct QTestState
{
int fd;
int qmp_fd;
pid_t qemu_pid; /* our child QEMU process */
int wstatus;
int expected_status;
bool big_endian;
bool irq_level[MAX_IRQ];
GString *rx;
QTestTransportOps ops;
GList *pending_events;
};
static GHookList abrt_hooks;
static struct sigaction sigact_old;
static int qtest_query_target_endianness(QTestState *s);
static void qtest_client_socket_send(QTestState*, const char *buf);
static void socket_send(int fd, const char *buf, size_t size);
static GString *qtest_client_socket_recv_line(QTestState *);
static void qtest_client_set_tx_handler(QTestState *s, QTestSendFn send);
static void qtest_client_set_rx_handler(QTestState *s, QTestRecvFn recv);
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_cmpint(sock, !=, -1);
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_cmpint(ret, !=, -1);
ret = listen(sock, 1);
g_assert_cmpint(ret, !=, -1);
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;
}
bool qtest_probe_child(QTestState *s)
{
pid_t pid = s->qemu_pid;
if (pid != -1) {
pid = waitpid(pid, &s->wstatus, WNOHANG);
if (pid == 0) {
return true;
}
s->qemu_pid = -1;
}
return false;
}
void qtest_set_expected_status(QTestState *s, int status)
{
s->expected_status = status;
}
static void kill_qemu(QTestState *s)
{
pid_t pid = s->qemu_pid;
int wstatus;
/* Skip wait if qtest_probe_child already reaped. */
if (pid != -1) {
kill(pid, SIGTERM);
TFR(pid = waitpid(s->qemu_pid, &s->wstatus, 0));
assert(pid == s->qemu_pid);
}
/*
* Check whether qemu exited with expected exit status; anything else is
* fishy and should be logged with as much detail as possible.
*/
wstatus = s->wstatus;
if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) != s->expected_status) {
fprintf(stderr, "%s:%d: kill_qemu() tried to terminate QEMU "
"process but encountered exit status %d (expected %d)\n",
__FILE__, __LINE__, WEXITSTATUS(wstatus), s->expected_status);
abort();
} 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(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_client_set_rx_handler(s, qtest_client_socket_recv_line);
qtest_client_set_tx_handler(s, qtest_client_socket_send);
qtest_add_abrt_handler(kill_qemu_hook_func, s);
command = g_strdup_printf("exec %s "
"-qtest unix:%s "
"-qtest-log %s "
"-chardev socket,path=%s,id=char0 "
"-mon chardev=char0,mode=control "
"-display none "
"%s"
" -accel qtest", qemu_binary, socket_path,
getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null",
qmp_socket_path,
extra_args ?: "");
g_test_message("starting QEMU: %s", command);
s->pending_events = NULL;
s->wstatus = 0;
s->expected_status = 0;
s->qemu_pid = fork();
if (s->qemu_pid == 0) {
g_setenv("QEMU_AUDIO_DRV", "none", true);
execlp("/bin/sh", "sh", "-c", command, NULL);
exit(1);
}
g_free(command);
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(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;
}
QTestState *qtest_init_with_serial(const char *extra_args, int *sock_fd)
{
int sock_fd_init;
char *sock_path, sock_dir[] = "/tmp/qtest-serial-XXXXXX";
QTestState *qts;
g_assert_true(mkdtemp(sock_dir) != NULL);
sock_path = g_strdup_printf("%s/sock", sock_dir);
sock_fd_init = init_socket(sock_path);
qts = qtest_initf("-chardev socket,id=s0,path=%s -serial chardev:s0 %s",
sock_path, extra_args);
*sock_fd = socket_accept(sock_fd_init);
unlink(sock_path);
g_free(sock_path);
rmdir(sock_dir);
g_assert_true(*sock_fd >= 0);
return qts;
}
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);
for (GList *it = s->pending_events; it != NULL; it = it->next) {
qobject_unref((QDict *)it->data);
}
g_list_free(s->pending_events);
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_cmpint(len, >, 0);
offset += len;
}
}
static void qtest_client_socket_send(QTestState *s, const char *buf)
{
socket_send(s->fd, buf, strlen(buf));
}
static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
gchar *str = g_strdup_vprintf(fmt, ap);
va_end(ap);
s->ops.send(s, str);
g_free(str);
}
/* Sends a message and file descriptors to the socket.
* It's needed for qmp-commands like getfd/add-fd */
static void socket_send_fds(int socket_fd, int *fds, size_t fds_num,
const char *buf, size_t buf_size)
{
ssize_t ret;
struct msghdr msg = { 0 };
char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)] = { 0 };
size_t fdsize = sizeof(int) * fds_num;
struct cmsghdr *cmsg;
struct iovec iov = { .iov_base = (char *)buf, .iov_len = buf_size };
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
if (fds && fds_num > 0) {
g_assert_cmpuint(fds_num, <, SOCKET_MAX_FDS);
msg.msg_control = control;
msg.msg_controllen = CMSG_SPACE(fdsize);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_len = CMSG_LEN(fdsize);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
memcpy(CMSG_DATA(cmsg), fds, fdsize);
}
do {
ret = sendmsg(socket_fd, &msg, 0);
} while (ret < 0 && errno == EINTR);
g_assert_cmpint(ret, >, 0);
}
static GString *qtest_client_socket_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 = s->ops.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(void *opaque, QObject *obj, Error *err)
{
QMPResponseParser *qmp = opaque;
assert(!obj != !err);
if (err) {
error_prepend(&err, "QMP JSON response parsing failed: ");
error_report_err(err);
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, &qmp, NULL);
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)
{
while (true) {
QDict *response = qtest_qmp_receive_dict(s);
if (!qdict_get_try_str(response, "event")) {
return response;
}
/* Stash the event for a later consumption */
s->pending_events = g_list_append(s->pending_events, response);
}
}
QDict *qtest_qmp_receive_dict(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_fds(int fd, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
QObject *qobj;
/* 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 */
if (fds && fds_num > 0) {
socket_send_fds(fd, fds, fds_num, str, qstring_get_length(qstr));
} else {
socket_send(fd, str, qstring_get_length(qstr));
}
qobject_unref(qstr);
qobject_unref(qobj);
}
}
void qmp_fd_vsend(int fd, const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(fd, NULL, 0, fmt, ap);
}
void qtest_qmp_vsend_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(s->qmp_fd, fds, fds_num, fmt, ap);
}
void qtest_qmp_vsend(QTestState *s, const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(s->qmp_fd, NULL, 0, fmt, ap);
}
QDict *qmp_fdv(int fd, const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(fd, NULL, 0, fmt, ap);
return qmp_fd_receive(fd);
}
QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
qtest_qmp_vsend_fds(s, fds, fds_num, fmt, ap);
/* Receive reply */
return qtest_qmp_receive(s);
}
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_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp_fds(s, fds, fds_num, fmt, ap);
va_end(ap);
return response;
}
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);
}
void qmp_fd_vsend_raw(int fd, const char *fmt, va_list ap)
{
bool log = getenv("QTEST_LOG") != NULL;
char *str = g_strdup_vprintf(fmt, ap);
if (log) {
fprintf(stderr, "%s", str);
}
socket_send(fd, str, strlen(str));
g_free(str);
}
void qmp_fd_send_raw(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qmp_fd_vsend_raw(fd, fmt, ap);
va_end(ap);
}
void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qmp_fd_vsend_raw(s->qmp_fd, fmt, ap);
va_end(ap);
}
QDict *qtest_qmp_event_ref(QTestState *s, const char *event)
{
while (s->pending_events) {
GList *first = s->pending_events;
QDict *response = (QDict *)first->data;
s->pending_events = g_list_delete_link(s->pending_events, first);
if (!strcmp(qdict_get_str(response, "event"), event)) {
return response;
}
qobject_unref(response);
}
return NULL;
}
QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event)
{
QDict *response = qtest_qmp_event_ref(s, event);
if (response) {
return response;
}
for (;;) {
response = qtest_qmp_receive_dict(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"));
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, '-');
if (!end) {
fprintf(stderr, "Can't determine architecture from binary name.\n");
abort();
}
return end + 1;
}
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];
}
void qtest_module_load(QTestState *s, const char *prefix, const char *libname)
{
qtest_sendf(s, "module_load %s %s\n", prefix, libname);
qtest_rsp(s, 0);
}
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);
}
void qtest_set_irq_in(QTestState *s, const char *qom_path, const char *name,
int num, int level)
{
if (!name) {
name = "unnamed-gpio-in";
}
qtest_sendf(s, "set_irq_in %s %s %d %d\n", qom_path, name, num, level);
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);
s->ops.send(s, bdata);
s->ops.send(s, "\n");
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);
}
void qtest_qmp_assert_success(QTestState *qts, const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp(qts, fmt, ap);
va_end(ap);
g_assert(response);
if (!qdict_haskey(response, "return")) {
QString *s = qobject_to_json_pretty(QOBJECT(response));
g_test_message("%s", qstring_get_str(s));
qobject_unref(s);
}
g_assert(qdict_haskey(response, "return"));
qobject_unref(response);
}
bool qtest_big_endian(QTestState *s)
{
return s->big_endian;
}
static bool qtest_check_machine_version(const char *mname, const char *basename,
int major, int minor)
{
char *newname;
bool is_equal;
newname = g_strdup_printf("%s-%i.%i", basename, major, minor);
is_equal = g_str_equal(mname, newname);
g_free(newname);
return is_equal;
}
static bool qtest_is_old_versioned_machine(const char *mname)
{
const char *dash = strrchr(mname, '-');
const char *dot = strrchr(mname, '.');
const char *chr;
char *bname;
const int major = QEMU_VERSION_MAJOR;
const int minor = QEMU_VERSION_MINOR;
bool res = false;
if (dash && dot && dot > dash) {
for (chr = dash + 1; *chr; chr++) {
if (!qemu_isdigit(*chr) && *chr != '.') {
return false;
}
}
/*
* Now check if it is one of the latest versions. Check major + 1
* and minor + 1 versions as well, since they might already exist
* in the development branch.
*/
bname = g_strdup(mname);
bname[dash - mname] = 0;
res = !qtest_check_machine_version(mname, bname, major + 1, 0) &&
!qtest_check_machine_version(mname, bname, major, minor + 1) &&
!qtest_check_machine_version(mname, bname, major, minor);
g_free(bname);
}
return res;
}
void qtest_cb_for_every_machine(void (*cb)(const char *machine),
bool skip_old_versioned)
{
QDict *response, *minfo;
QList *list;
const QListEntry *p;
QObject *qobj;
QString *qstr;
const char *mname;
QTestState *qts;
qts = qtest_init("-machine none");
response = qtest_qmp(qts, "{ '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);
/* Ignore machines that cannot be used for qtests */
if (!memcmp("xenfv", mname, 5) || g_str_equal("xenpv", mname)) {
continue;
}
if (!skip_old_versioned || !qtest_is_old_versioned_machine(mname)) {
cb(mname);
}
}
qtest_quit(qts);
qobject_unref(response);
}
/*
* Generic hot-plugging test via the device_add QMP commands.
*/
void qtest_qmp_device_add_qdict(QTestState *qts, const char *drv,
const QDict *arguments)
{
QDict *resp;
QDict *args = arguments ? qdict_clone_shallow(arguments) : qdict_new();
g_assert(!qdict_haskey(args, "driver"));
qdict_put_str(args, "driver", drv);
resp = qtest_qmp(qts, "{'execute': 'device_add', 'arguments': %p}", args);
g_assert(resp);
g_assert(!qdict_haskey(resp, "event")); /* We don't expect any events */
g_assert(!qdict_haskey(resp, "error"));
qobject_unref(resp);
}
void qtest_qmp_device_add(QTestState *qts, const char *driver, const char *id,
const char *fmt, ...)
{
QDict *args;
va_list ap;
va_start(ap, fmt);
args = qdict_from_vjsonf_nofail(fmt, ap);
va_end(ap);
g_assert(!qdict_haskey(args, "id"));
qdict_put_str(args, "id", id);
qtest_qmp_device_add_qdict(qts, driver, args);
qobject_unref(args);
}
/*
* 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": {}}
*/
void qtest_qmp_device_del(QTestState *qts, const char *id)
{
QDict *rsp;
rsp = qtest_qmp(qts, "{'execute': 'device_del', 'arguments': {'id': %s}}",
id);
g_assert(qdict_haskey(rsp, "return"));
qobject_unref(rsp);
qtest_qmp_eventwait(qts, "DEVICE_DELETED");
}
bool qmp_rsp_is_err(QDict *rsp)
{
QDict *error = qdict_get_qdict(rsp, "error");
qobject_unref(rsp);
return !!error;
}
void qmp_expect_error_and_unref(QDict *rsp, const char *class)
{
QDict *error = qdict_get_qdict(rsp, "error");
g_assert_cmpstr(qdict_get_try_str(error, "class"), ==, class);
g_assert_nonnull(qdict_get_try_str(error, "desc"));
g_assert(!qdict_haskey(rsp, "return"));
qobject_unref(rsp);
}
static void qtest_client_set_tx_handler(QTestState *s,
QTestSendFn send)
{
s->ops.send = send;
}
static void qtest_client_set_rx_handler(QTestState *s, QTestRecvFn recv)
{
s->ops.recv_line = recv;
}
/* A type-safe wrapper for s->send() */
static void send_wrapper(QTestState *s, const char *buf)
{
s->ops.external_send(s, buf);
}
static GString *qtest_client_inproc_recv_line(QTestState *s)
{
GString *line;
size_t offset;
char *eol;
eol = strchr(s->rx->str, '\n');
offset = eol - s->rx->str;
line = g_string_new_len(s->rx->str, offset);
g_string_erase(s->rx, 0, offset + 1);
return line;
}
QTestState *qtest_inproc_init(QTestState **s, bool log, const char* arch,
void (*send)(void*, const char*))
{
QTestState *qts;
qts = g_new0(QTestState, 1);
qts->pending_events = NULL;
*s = qts; /* Expose qts early on, since the query endianness relies on it */
qts->wstatus = 0;
for (int i = 0; i < MAX_IRQ; i++) {
qts->irq_level[i] = false;
}
qtest_client_set_rx_handler(qts, qtest_client_inproc_recv_line);
/* send() may not have a matching protoype, so use a type-safe wrapper */
qts->ops.external_send = send;
qtest_client_set_tx_handler(qts, send_wrapper);
qts->big_endian = qtest_query_target_endianness(qts);
/*
* Set a dummy path for QTEST_QEMU_BINARY. Doesn't need to exist, but this
* way, qtest_get_arch works for inproc qtest.
*/
gchar *bin_path = g_strconcat("/qemu-system-", arch, NULL);
setenv("QTEST_QEMU_BINARY", bin_path, 0);
g_free(bin_path);
return qts;
}
void qtest_client_inproc_recv(void *opaque, const char *str)
{
QTestState *qts = *(QTestState **)opaque;
if (!qts->rx) {
qts->rx = g_string_new(NULL);
}
g_string_append(qts->rx, str);
return;
}
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