@@ -1183,11 +1183,12 @@ static int libxl__pre_open_qmp_socket(libxl__gc *gc, libxl_domid domid,
}
static int libxl__build_device_model_args_new(libxl__gc *gc,
- const char *dm, int guest_domid,
- const libxl_domain_config *guest_config,
- char ***args, char ***envs,
- const libxl__domain_build_state *state,
- int *dm_state_fd)
+ const char *dm, int guest_domid,
+ const libxl_domain_config *guest_config,
+ char ***args, char ***envs,
+ const libxl__domain_build_state *state,
+ const libxl__qemu_available_opts *qemu_opts,
+ int *dm_state_fd)
{
const libxl_domain_create_info *c_info = &guest_config->c_info;
const libxl_domain_build_info *b_info = &guest_config->b_info;
@@ -1778,8 +1779,13 @@ static int libxl__build_device_model_args_new(libxl__gc *gc,
}
/* Add "-chroot [dir]" to command-line */
- flexarray_append(dm_args, "-chroot");
- flexarray_append(dm_args, chroot_dir);
+ if (qemu_opts->have_runwith_chroot) {
+ flexarray_append_pair(dm_args, "-run-with",
+ GCSPRINTF("chroot=%s", chroot_dir));
+ } else {
+ flexarray_append(dm_args, "-chroot");
+ flexarray_append(dm_args, chroot_dir);
+ }
}
if (state->saved_state) {
@@ -2059,11 +2065,12 @@ static int libxl__build_device_model_args_new(libxl__gc *gc,
}
static int libxl__build_device_model_args(libxl__gc *gc,
- const char *dm, int guest_domid,
- const libxl_domain_config *guest_config,
- char ***args, char ***envs,
- const libxl__domain_build_state *state,
- int *dm_state_fd)
+ const char *dm, int guest_domid,
+ const libxl_domain_config *guest_config,
+ char ***args, char ***envs,
+ const libxl__domain_build_state *state,
+ const libxl__qemu_available_opts *qemu_opts,
+ int *dm_state_fd)
/* dm_state_fd may be NULL iff caller knows we are using stubdom
* and therefore will be passing a filename rather than a fd. */
{
@@ -2081,7 +2088,9 @@ static int libxl__build_device_model_args(libxl__gc *gc,
return libxl__build_device_model_args_new(gc, dm,
guest_domid, guest_config,
args, envs,
- state, dm_state_fd);
+ state,
+ qemu_opts,
+ dm_state_fd);
default:
LOGED(ERROR, guest_domid, "unknown device model version %d",
guest_config->b_info.device_model_version);
@@ -2403,7 +2412,9 @@ void libxl__spawn_stub_dm(libxl__egc *egc, libxl__stub_dm_spawn_state *sdss)
ret = libxl__build_device_model_args(gc, "stubdom-dm", guest_domid,
guest_config, &args, NULL,
- d_state, NULL);
+ d_state,
+ &sdss->dm.qemu_opts,
+ NULL);
if (ret) {
ret = ERROR_FAIL;
goto out;
@@ -3024,6 +3035,7 @@ static void device_model_probe_detached(libxl__egc *egc,
static void device_model_probe_cmdline(libxl__egc *egc,
libxl__ev_qmp *qmp, const libxl__json_object *response, int rc)
{
+ EGC_GC;
libxl__dm_spawn_state *dmss = CONTAINER_OF(qmp, *dmss, qmp);
if (rc)
@@ -3033,6 +3045,43 @@ static void device_model_probe_cmdline(libxl__egc *egc,
* query-command-line-options response:
* [ { 'option': 'str', 'parameters': [{ 'name': 'str', ... }] } ]
*/
+ const libxl__json_object *option;
+ for (int i_option = 0;
+ (option = libxl__json_array_get(response, i_option));
+ i_option++) {
+ const libxl__json_object *o;
+ const char *opt_str;
+
+ o = libxl__json_map_get("option", option, JSON_STRING);
+ if (!o) {
+ rc = ERROR_QEMU_API;
+ goto out;
+ }
+ opt_str = libxl__json_object_get_string(o);
+
+ if (!strcmp("run-with", opt_str)) {
+ const libxl__json_object *params;
+ const libxl__json_object *item;
+
+ params = libxl__json_map_get("parameters", option, JSON_ARRAY);
+ for (int i = 0; (item = libxl__json_array_get(params, i)); i++) {
+ o = libxl__json_map_get("name", item, JSON_STRING);
+ if (!o) {
+ rc = ERROR_QEMU_API;
+ goto out;
+ }
+ if (!strcmp("chroot", libxl__json_object_get_string(o))) {
+ dmss->qemu_opts.have_runwith_chroot = true;
+ }
+ }
+
+ /*
+ * No need to parse more options, we are only interested with
+ * -run-with at the moment.
+ */
+ break;
+ }
+ }
qmp->callback = device_model_probe_quit;
rc = libxl__ev_qmp_send(egc, qmp, "quit", NULL);
@@ -3113,6 +3162,7 @@ static void device_model_launch(libxl__egc *egc,
rc = libxl__build_device_model_args(gc, dm, domid, guest_config,
&args, &envs, state,
+ &dmss->qemu_opts,
&dm_state_fd);
if (rc)
goto out;
@@ -4142,6 +4142,10 @@ _hidden void libxl__add_nics(libxl__egc *egc, libxl__ao *ao, uint32_t domid,
/* First layer; wraps libxl__spawn_spawn. */
typedef struct libxl__dm_spawn_state libxl__dm_spawn_state;
+typedef struct libxl__qemu_available_opts libxl__qemu_available_opts;
+struct libxl__qemu_available_opts {
+ bool have_runwith_chroot;
+};
typedef void libxl__dm_spawn_cb(libxl__egc *egc, libxl__dm_spawn_state*,
int rc /* if !0, error was logged */);
@@ -4154,6 +4158,7 @@ struct libxl__dm_spawn_state {
libxl__ev_qmp qmp;
libxl__ev_time timeout;
libxl__dm_resume_state dmrs;
+ libxl__qemu_available_opts qemu_opts;
const char *dm;
/* filled in by user, must remain valid: */
uint32_t guest_domid; /* domain being served */