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tests/qtest: Allow qtest_get_machines to use an alternate QEMU binary 

We're adding support for using more than one QEMU binary in
tests. Modify qtest_get_machines() to take an environment variable
that contains the QEMU binary path.

Since the function keeps a cache of the machines list in the form of a
static variable, refresh it any time the environment variable changes.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231018192741.25885-4-farosas@suse.de>
master
Fabiano Rosas 2023-10-18 16:27:32 -03:00 committed by Juan Quintela
parent 9931215bd3
commit 41b2eba4e5
1 changed files with 25 additions and 4 deletions
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29
tests/qtest/libqtest.c
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@ -1468,13 +1468,26 @@ struct MachInfo {
char *alias;
};
static void qtest_free_machine_list(struct MachInfo *machines)
{
if (machines) {
for (int i = 0; machines[i].name != NULL; i++) {
g_free(machines[i].name);
g_free(machines[i].alias);
}
g_free(machines);
}
}
/*
* Returns an array with pointers to the available machine names.
* The terminating entry has the name set to NULL.
*/
static struct MachInfo *qtest_get_machines(void)
static struct MachInfo *qtest_get_machines(const char *var)
{
static struct MachInfo *machines;
static char *qemu_var;
QDict *response, *minfo;
QList *list;
const QListEntry *p;
@ -1483,11 +1496,19 @@ static struct MachInfo *qtest_get_machines(void)
QTestState *qts;
int idx;
if (g_strcmp0(qemu_var, var)) {
qemu_var = g_strdup(var);
/* new qemu, clear the cache */
qtest_free_machine_list(machines);
machines = NULL;
}
if (machines) {
return machines;
}
qts = qtest_init("-machine none");
qts = qtest_init_with_env(qemu_var, "-machine none");
response = qtest_qmp(qts, "{ 'execute': 'query-machines' }");
g_assert(response);
list = qdict_get_qlist(response, "return");
@ -1528,7 +1549,7 @@ void qtest_cb_for_every_machine(void (*cb)(const char *machine),
struct MachInfo *machines;
int i;
machines = qtest_get_machines();
machines = qtest_get_machines(NULL);
for (i = 0; machines[i].name != NULL; i++) {
/* Ignore machines that cannot be used for qtests */
@ -1549,7 +1570,7 @@ bool qtest_has_machine(const char *machine)
struct MachInfo *machines;
int i;
machines = qtest_get_machines();
machines = qtest_get_machines(NULL);
for (i = 0; machines[i].name != NULL; i++) {
if (g_str_equal(machine, machines[i].name) ||