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test-char: add hotswap test

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Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1499342940-56739-10-git-send-email-anton.nefedov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Anton Nefedov 2017-07-06 15:08:56 +03:00 committed by Paolo Bonzini
parent ae69e4823d
commit 7b5a9e453e
1 changed files with 71 additions and 0 deletions
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71
tests/test-char.c
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@ -658,6 +658,76 @@ static void char_invalid_test(void)
g_assert_null(chr);
}
static int chardev_change(void *opaque)
{
return 0;
}
static int chardev_change_denied(void *opaque)
{
return -1;
}
static void char_hotswap_test(void)
{
char *chr_args;
Chardev *chr;
CharBackend be;
gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
char *filename = g_build_filename(tmp_path, "file", NULL);
ChardevFile file = { .out = filename };
ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
.u.file.data = &file };
ChardevReturn *ret;
int port;
int sock = make_udp_socket(&port);
g_assert_cmpint(sock, >, 0);
chr_args = g_strdup_printf("udp:127.0.0.1:%d", port);
chr = qemu_chr_new("chardev", chr_args);
qemu_chr_fe_init(&be, chr, &error_abort);
/* check that chardev operates correctly */
char_udp_test_internal(chr, sock);
/* set the handler that denies the hotswap */
qemu_chr_fe_set_handlers(&be, NULL, NULL,
NULL, chardev_change_denied, NULL, NULL, true);
/* now, change is denied and has to keep the old backend operating */
ret = qmp_chardev_change("chardev", &backend, NULL);
g_assert(!ret);
g_assert(be.chr == chr);
char_udp_test_internal(chr, sock);
/* now allow the change */
qemu_chr_fe_set_handlers(&be, NULL, NULL,
NULL, chardev_change, NULL, NULL, true);
/* has to succeed now */
ret = qmp_chardev_change("chardev", &backend, &error_abort);
g_assert(be.chr != chr);
close(sock);
chr = be.chr;
/* run the file chardev test */
char_file_test_internal(chr, filename);
object_unparent(OBJECT(chr));
qapi_free_ChardevReturn(ret);
g_unlink(filename);
g_free(filename);
g_rmdir(tmp_path);
g_free(tmp_path);
g_free(chr_args);
}
int main(int argc, char **argv)
{
qemu_init_main_loop(&error_abort);
@ -692,6 +762,7 @@ int main(int argc, char **argv)
#ifdef HAVE_CHARDEV_SERIAL
g_test_add_func("/char/serial", char_serial_test);
#endif
g_test_add_func("/char/hotswap", char_hotswap_test);
return g_test_run();
}