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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/wait.h>
#include "libqtest.h"
#include "libqos/libqos.h"
#include "libqos/pci.h"
/*** Test Setup & Teardown ***/
/**
* Launch QEMU with the given command line,
* and then set up interrupts and our guest malloc interface.
*/
QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap)
{
char *cmdline;
struct QOSState *qs = g_malloc(sizeof(QOSState));
cmdline = g_strdup_vprintf(cmdline_fmt, ap);
qs->qts = qtest_start(cmdline);
qs->ops = ops;
qtest_irq_intercept_in(global_qtest, "ioapic");
if (ops && ops->init_allocator) {
qs->alloc = ops->init_allocator(ALLOC_NO_FLAGS);
}
g_free(cmdline);
return qs;
}
/**
* Launch QEMU with the given command line,
* and then set up interrupts and our guest malloc interface.
*/
QOSState *qtest_boot(QOSOps *ops, const char *cmdline_fmt, ...)
{
QOSState *qs;
va_list ap;
va_start(ap, cmdline_fmt);
qs = qtest_vboot(ops, cmdline_fmt, ap);
va_end(ap);
return qs;
}
/**
* Tear down the QEMU instance.
*/
void qtest_shutdown(QOSState *qs)
{
if (qs->alloc && qs->ops && qs->ops->uninit_allocator) {
qs->ops->uninit_allocator(qs->alloc);
qs->alloc = NULL;
}
qtest_quit(qs->qts);
g_free(qs);
}
void set_context(QOSState *s)
{
global_qtest = s->qts;
}
static QDict *qmp_execute(const char *command)
{
char *fmt;
QDict *rsp;
fmt = g_strdup_printf("{ 'execute': '%s' }", command);
rsp = qmp(fmt);
g_free(fmt);
return rsp;
}
void migrate(QOSState *from, QOSState *to, const char *uri)
{
const char *st;
char *s;
QDict *rsp, *sub;
bool running;
set_context(from);
/* Is the machine currently running? */
rsp = qmp_execute("query-status");
g_assert(qdict_haskey(rsp, "return"));
sub = qdict_get_qdict(rsp, "return");
g_assert(qdict_haskey(sub, "running"));
running = qdict_get_bool(sub, "running");
QDECREF(rsp);
/* Issue the migrate command. */
s = g_strdup_printf("{ 'execute': 'migrate',"
"'arguments': { 'uri': '%s' } }",
uri);
rsp = qmp(s);
g_free(s);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
/* Wait for STOP event, but only if we were running: */
if (running) {
qmp_eventwait("STOP");
}
/* If we were running, we can wait for an event. */
if (running) {
migrate_allocator(from->alloc, to->alloc);
set_context(to);
qmp_eventwait("RESUME");
return;
}
/* Otherwise, we need to wait: poll until migration is completed. */
while (1) {
rsp = qmp_execute("query-migrate");
g_assert(qdict_haskey(rsp, "return"));
sub = qdict_get_qdict(rsp, "return");
g_assert(qdict_haskey(sub, "status"));
st = qdict_get_str(sub, "status");
/* "setup", "active", "completed", "failed", "cancelled" */
if (strcmp(st, "completed") == 0) {
QDECREF(rsp);
break;
}
if ((strcmp(st, "setup") == 0) || (strcmp(st, "active") == 0)) {
QDECREF(rsp);
g_usleep(5000);
continue;
}
fprintf(stderr, "Migration did not complete, status: %s\n", st);
g_assert_not_reached();
}
migrate_allocator(from->alloc, to->alloc);
set_context(to);
}
void mkimg(const char *file, const char *fmt, unsigned size_mb)
{
gchar *cli;
bool ret;
int rc;
GError *err = NULL;
char *qemu_img_path;
gchar *out, *out2;
char *abs_path;
qemu_img_path = getenv("QTEST_QEMU_IMG");
abs_path = realpath(qemu_img_path, NULL);
assert(qemu_img_path);
cli = g_strdup_printf("%s create -f %s %s %uM", abs_path,
fmt, file, size_mb);
ret = g_spawn_command_line_sync(cli, &out, &out2, &rc, &err);
if (err) {
fprintf(stderr, "%s\n", err->message);
g_error_free(err);
}
g_assert(ret && !err);
/* In glib 2.34, we have g_spawn_check_exit_status. in 2.12, we don't.
* glib 2.43.91 implementation assumes that any non-zero is an error for
* windows, but uses extra precautions for Linux. However,
* 0 is only possible if the program exited normally, so that should be
* sufficient for our purposes on all platforms, here. */
if (rc) {
fprintf(stderr, "qemu-img returned status code %d\n", rc);
}
g_assert(!rc);
g_free(out);
g_free(out2);
g_free(cli);
free(abs_path);
}
void mkqcow2(const char *file, unsigned size_mb)
{
return mkimg(file, "qcow2", size_mb);
}
void prepare_blkdebug_script(const char *debug_fn, const char *event)
{
FILE *debug_file = fopen(debug_fn, "w");
int ret;
fprintf(debug_file, "[inject-error]\n");
fprintf(debug_file, "event = \"%s\"\n", event);
fprintf(debug_file, "errno = \"5\"\n");
fprintf(debug_file, "state = \"1\"\n");
fprintf(debug_file, "immediately = \"off\"\n");
fprintf(debug_file, "once = \"on\"\n");
fprintf(debug_file, "[set-state]\n");
fprintf(debug_file, "event = \"%s\"\n", event);
fprintf(debug_file, "new_state = \"2\"\n");
fflush(debug_file);
g_assert(!ferror(debug_file));
ret = fclose(debug_file);
g_assert(ret == 0);
}
void generate_pattern(void *buffer, size_t len, size_t cycle_len)
{
int i, j;
unsigned char *tx = (unsigned char *)buffer;
unsigned char p;
size_t *sx;
/* Write an indicative pattern that varies and is unique per-cycle */
p = rand() % 256;
for (i = 0; i < len; i++) {
tx[i] = p++ % 256;
if (i % cycle_len == 0) {
p = rand() % 256;
}
}
/* force uniqueness by writing an id per-cycle */
for (i = 0; i < len / cycle_len; i++) {
j = i * cycle_len;
if (j + sizeof(*sx) <= len) {
sx = (size_t *)&tx[j];
*sx = i;
}
}
}
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