[PATCH 27/28] libxl: ocaml: add VM lifecycle operations

[Rob Hoes <rob.hoes@citrix.com>]

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
---
 tools/ocaml/libs/xl/xenlight.ml.in   |   10 ++
 tools/ocaml/libs/xl/xenlight.mli.in  |   10 ++
 tools/ocaml/libs/xl/xenlight_stubs.c |  171 ++++++++++++++++++++++++++++++++++
 3 files changed, 191 insertions(+)

diff --git a/tools/ocaml/libs/xl/xenlight.ml.in b/tools/ocaml/libs/xl/xenlight.ml.in
index 96d6a38..5cd5204 100644
--- a/tools/ocaml/libs/xl/xenlight.ml.in
+++ b/tools/ocaml/libs/xl/xenlight.ml.in
@@ -86,6 +86,16 @@ type event =
 
 (* @@LIBXL_TYPES@@ *)
 
+external domain_create_new : ctx -> Domain_config.t -> domid = "stub_xl_domain_create_new"
+external domain_create_restore : ctx -> Domain_config.t -> Unix.file_descr -> domid = "stub_xl_domain_create_restore"
+external domain_shutdown : ctx -> domid -> unit = "stub_libxl_domain_shutdown"
+external domain_wait_shutdown : ctx -> domid -> unit = "stub_libxl_domain_wait_shutdown"
+external domain_reboot : ctx -> domid -> unit = "stub_libxl_domain_reboot"
+external domain_destroy : ctx -> domid -> unit = "stub_libxl_domain_destroy"
+external domain_suspend : ctx -> domid -> Unix.file_descr -> unit = "stub_libxl_domain_suspend"
+external domain_pause : ctx -> domid -> unit = "stub_libxl_domain_pause"
+external domain_unpause : ctx -> domid -> unit = "stub_libxl_domain_unpause"
+
 external send_trigger : ctx -> domid -> trigger -> int -> unit = "stub_xl_send_trigger"
 external send_sysrq : ctx -> domid -> char -> unit = "stub_xl_send_sysrq"
 external send_debug_keys : ctx -> string -> unit = "stub_xl_send_debug_keys"
diff --git a/tools/ocaml/libs/xl/xenlight.mli.in b/tools/ocaml/libs/xl/xenlight.mli.in
index d66f666..41713f3 100644
--- a/tools/ocaml/libs/xl/xenlight.mli.in
+++ b/tools/ocaml/libs/xl/xenlight.mli.in
@@ -58,6 +58,16 @@ type event =
 
 (* @@LIBXL_TYPES@@ *)
 
+external domain_create_new : ctx -> Domain_config.t -> domid = "stub_xl_domain_create_new"
+external domain_create_restore : ctx -> Domain_config.t -> Unix.file_descr -> domid = "stub_xl_domain_create_restore"
+external domain_shutdown : ctx -> domid -> unit = "stub_libxl_domain_shutdown"
+external domain_wait_shutdown : ctx -> domid -> unit = "stub_libxl_domain_wait_shutdown"
+external domain_reboot : ctx -> domid -> unit = "stub_libxl_domain_reboot"
+external domain_destroy : ctx -> domid -> unit = "stub_libxl_domain_destroy"
+external domain_suspend : ctx -> domid -> Unix.file_descr -> unit = "stub_libxl_domain_suspend"
+external domain_pause : ctx -> domid -> unit = "stub_libxl_domain_pause"
+external domain_unpause : ctx -> domid -> unit = "stub_libxl_domain_unpause"
+
 external send_trigger : ctx -> domid -> trigger -> int -> unit = "stub_xl_send_trigger"
 external send_sysrq : ctx -> domid -> char -> unit = "stub_xl_send_sysrq"
 external send_debug_keys : ctx -> string -> unit = "stub_xl_send_debug_keys"
diff --git a/tools/ocaml/libs/xl/xenlight_stubs.c b/tools/ocaml/libs/xl/xenlight_stubs.c
index f832f37..f3dd832 100644
--- a/tools/ocaml/libs/xl/xenlight_stubs.c
+++ b/tools/ocaml/libs/xl/xenlight_stubs.c
@@ -327,6 +327,177 @@ static char *String_option_val(value v)
 
 #include "_libxl_types.inc"
 
+static int domain_wait_event(libxl_ctx *ctx, int domid, libxl_event **event_r)
+{
+	int ret;
+	for (;;) {
+		ret = libxl_event_wait(ctx, event_r, LIBXL_EVENTMASK_ALL, 0,0);
+		if (ret) {
+			return ret;
+		}
+		if ((*event_r)->domid != domid) {
+			char *evstr = libxl_event_to_json(CTX, *event_r);
+			free(evstr);
+			libxl_event_free(CTX, *event_r);
+			continue;
+		}
+		return ret;
+	}
+}
+
+value stub_xl_domain_create_new(value ctx, value domain_config)
+{
+	CAMLparam2(ctx, domain_config);
+	int ret;
+	libxl_domain_config c_dconfig;
+	uint32_t c_domid;
+
+	libxl_domain_config_init(&c_dconfig);
+	ret = domain_config_val(CTX, &c_dconfig, domain_config);
+	if (ret != 0)
+		failwith_xl(ret, "domain_create_new");
+
+	ret = libxl_domain_create_new(CTX, &c_dconfig, &c_domid, NULL, NULL);
+	if (ret != 0)
+		failwith_xl(ret, "domain_create_new");
+
+	libxl_domain_config_dispose(&c_dconfig);
+
+	CAMLreturn(Val_int(c_domid));
+}
+
+value stub_xl_domain_create_restore(value ctx, value domain_config, value restore_fd)
+{
+	CAMLparam2(ctx, domain_config);
+	int ret;
+	libxl_domain_config c_dconfig;
+	uint32_t c_domid;
+
+	ret = domain_config_val(CTX, &c_dconfig, domain_config);
+	if (ret != 0)
+		failwith_xl(ret, "domain_create_restore");
+
+	ret = libxl_domain_create_restore(CTX, &c_dconfig, &c_domid, Int_val(restore_fd), NULL, NULL);
+	if (ret != 0)
+		failwith_xl(ret, "domain_create_restore");
+
+	libxl_domain_config_dispose(&c_dconfig);
+
+	CAMLreturn(Val_int(c_domid));
+}
+
+value stub_libxl_domain_wait_shutdown(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+	libxl_event *event;
+	libxl_evgen_domain_death *deathw;
+	ret = libxl_evenable_domain_death(CTX, Int_val(domid), 0, &deathw);
+	if (ret) {
+		fprintf(stderr,"wait for death failed (evgen, rc=%d)\n",ret);
+		exit(-1);
+	}
+
+	for (;;) {
+		ret = domain_wait_event(CTX, Int_val(domid), &event);
+		if (ret)
+			failwith_xl(ret, "domain_shutdown");
+
+		switch (event->type) {
+		case LIBXL_EVENT_TYPE_DOMAIN_DEATH:
+			goto done;
+		case LIBXL_EVENT_TYPE_DOMAIN_SHUTDOWN:
+			goto done;
+		default:
+			break;
+		}
+		libxl_event_free(CTX, event);
+	}
+done:
+	libxl_event_free(CTX, event);
+	libxl_evdisable_domain_death(CTX, deathw);
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_shutdown(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+
+	ret = libxl_domain_shutdown(CTX, Int_val(domid));
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_shutdown");
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_reboot(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+
+	ret = libxl_domain_reboot(CTX, Int_val(domid));
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_reboot");
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_destroy(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+
+	ret = libxl_domain_destroy(CTX, Int_val(domid), 0);
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_destroy");
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_suspend(value ctx, value domid, value fd)
+{
+	CAMLparam3(ctx, domid, fd);
+	int ret;
+
+	ret = libxl_domain_suspend(CTX, Int_val(domid), Int_val(fd), 0, 0);
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_suspend");
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_pause(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+
+	ret = libxl_domain_pause(CTX, Int_val(domid));
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_pause");
+
+	CAMLreturn(Val_unit);
+}
+
+value stub_libxl_domain_unpause(value ctx, value domid)
+{
+	CAMLparam2(ctx, domid);
+	int ret;
+
+	ret = libxl_domain_unpause(CTX, Int_val(domid));
+
+	if (ret != 0)
+		failwith_xl(ret, "domain_unpause");
+
+	CAMLreturn(Val_unit);
+}
+
 void async_callback(libxl_ctx *ctx, int rc, void *for_callback)
 {
 	int *task = (int *) for_callback;
-- 
1.7.10.4