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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH vtpm v2 10/12] make devid a type so it is initialized properly
Previously device ids in libxl were treated as integers meaning they
were being initialized to 0, which is a valid device id. This patch
makes devid its own type in libxl and initializes it to -1, an invalid
value.
This fixes a bug where if you try to do a xl DEV-attach multiple
time it will continuously try to reattach device 0 instead of
generated a new device id.
Signed-off-by: Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>
Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
diff --git a/tools/libxl/gentest.py b/tools/libxl/gentest.py
index 2915f71..84b4fd7 100644
--- a/tools/libxl/gentest.py
+++ b/tools/libxl/gentest.py
@@ -60,7 +60,7 @@ def gen_rand_init(ty, v, indent = " ", parent = None):
passby=idl.PASS_BY_REFERENCE))
elif ty.typename in ["libxl_uuid", "libxl_mac", "libxl_hwcap"]:
s += "rand_bytes((uint8_t *)%s, sizeof(*%s));\n" % (v,v)
- elif ty.typename in ["libxl_domid"] or isinstance(ty, idl.Number):
+ elif ty.typename in ["libxl_domid", "libxl_devid"] or isinstance(ty,
idl.Number):
s += "%s = rand() %% (sizeof(%s)*8);\n" % \
(ty.pass_arg(v, parent is None),
ty.pass_arg(v, parent is None))
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 599c7f1..7a7c419 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -307,6 +307,7 @@ void libxl_cpuid_dispose(libxl_cpuid_policy_list
*cpuid_list);
#define LIBXL_PCI_FUNC_ALL (~0U)
typedef uint32_t libxl_domid;
+typedef int libxl_devid;
/*
* Formatting Enumerations.
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index cf83c60..de111a6 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -8,6 +8,7 @@ namespace("libxl_")
libxl_defbool = Builtin("defbool", passby=PASS_BY_REFERENCE)
libxl_domid = Builtin("domid", json_fn = "yajl_gen_integer", autogenerate_json
= False)
+libxl_devid = Builtin("devid", json_fn = "yajl_gen_integer", autogenerate_json
= False, signed = True, init_val="-1")
libxl_uuid = Builtin("uuid", passby=PASS_BY_REFERENCE)
libxl_mac = Builtin("mac", passby=PASS_BY_REFERENCE)
libxl_bitmap = Builtin("bitmap", dispose_fn="libxl_bitmap_dispose",
passby=PASS_BY_REFERENCE)
@@ -343,7 +344,7 @@ libxl_domain_build_info = Struct("domain_build_info",[
libxl_device_vfb = Struct("device_vfb", [
("backend_domid", libxl_domid),
- ("devid", integer),
+ ("devid", libxl_devid),
("vnc", libxl_vnc_info),
("sdl", libxl_sdl_info),
# set keyboard layout, default is en-us keyboard
@@ -352,7 +353,7 @@ libxl_device_vfb = Struct("device_vfb", [
libxl_device_vkb = Struct("device_vkb", [
("backend_domid", libxl_domid),
- ("devid", integer),
+ ("devid", libxl_devid),
])
libxl_device_disk = Struct("device_disk", [
@@ -369,7 +370,7 @@ libxl_device_disk = Struct("device_disk", [
libxl_device_nic = Struct("device_nic", [
("backend_domid", libxl_domid),
- ("devid", integer),
+ ("devid", libxl_devid),
("mtu", integer),
("model", string),
("mac", libxl_mac),
@@ -399,7 +400,7 @@ libxl_diskinfo = Struct("diskinfo", [
("backend_id", uint32),
("frontend", string),
("frontend_id", uint32),
- ("devid", integer),
+ ("devid", libxl_devid),
("state", integer),
("evtch", integer),
("rref", integer),
@@ -410,7 +411,7 @@ libxl_nicinfo = Struct("nicinfo", [
("backend_id", uint32),
("frontend", string),
("frontend_id", uint32),
- ("devid", integer),
+ ("devid", libxl_devid),
("state", integer),
("evtch", integer),
("rref_tx", integer),
diff --git a/tools/ocaml/libs/xl/genwrap.py b/tools/ocaml/libs/xl/genwrap.py
index 42f374e..97d088d 100644
--- a/tools/ocaml/libs/xl/genwrap.py
+++ b/tools/ocaml/libs/xl/genwrap.py
@@ -10,6 +10,7 @@ builtins = {
"int": ("int", "%(c)s =
Int_val(%(o)s)", "Val_int(%(c)s)" ),
"char *": ("string", "%(c)s =
dup_String_val(gc, %(o)s)", "caml_copy_string(%(c)s)"),
"libxl_domid": ("domid", "%(c)s =
Int_val(%(o)s)", "Val_int(%(c)s)" ),
+ "libxl_devid": ("devid", "%(c)s =
Int_val(%(o)s)", "Val_int(%(c)s)" ),
"libxl_defbool": ("bool option", "%(c)s =
Defbool_val(%(o)s)", "Val_defbool(%(c)s)" ),
"libxl_uuid": ("int array", "Uuid_val(gc, lg,
&%(c)s, %(o)s)", "Val_uuid(&%(c)s)"),
"libxl_key_value_list": ("(string * string) list", None,
None),
@@ -41,8 +42,8 @@ def stub_fn_name(ty, name):
return "stub_xl_%s_%s" % (ty.rawname,name)
def ocaml_type_of(ty):
- if ty.rawname == "domid":
- return "domid"
+ if ty.rawname in ["domid","devid"]:
+ return ty.rawname
elif isinstance(ty,idl.UInt):
if ty.width in [8, 16]:
# handle as ints
diff --git a/tools/ocaml/libs/xl/xenlight.ml.in
b/tools/ocaml/libs/xl/xenlight.ml.in
index c47623c..dcc1a38 100644
--- a/tools/ocaml/libs/xl/xenlight.ml.in
+++ b/tools/ocaml/libs/xl/xenlight.ml.in
@@ -16,6 +16,7 @@
exception Error of string
type domid = int
+type devid = int
(* @@LIBXL_TYPES@@ *)
diff --git a/tools/ocaml/libs/xl/xenlight.mli.in
b/tools/ocaml/libs/xl/xenlight.mli.in
index 4717bac..3fd0165 100644
--- a/tools/ocaml/libs/xl/xenlight.mli.in
+++ b/tools/ocaml/libs/xl/xenlight.mli.in
@@ -16,6 +16,7 @@
exception Error of string
type domid = int
+type devid = int
(* @@LIBXL_TYPES@@ *)
diff --git a/tools/python/xen/lowlevel/xl/xl.c
b/tools/python/xen/lowlevel/xl/xl.c
index 0551c76..32f982a 100644
--- a/tools/python/xen/lowlevel/xl/xl.c
+++ b/tools/python/xen/lowlevel/xl/xl.c
@@ -281,6 +281,11 @@ int attrib__libxl_domid_set(PyObject *v, libxl_domid
*domid) {
return 0;
}
+int attrib__libxl_devid_set(PyObject *v, libxl_devid *devid) {
+ *devid = PyInt_AsLong(v);
+ return 0;
+}
+
int attrib__struct_in_addr_set(PyObject *v, struct in_addr *pptr)
{
PyErr_SetString(PyExc_NotImplementedError, "Setting in_addr");
@@ -342,6 +347,10 @@ PyObject *attrib__libxl_domid_get(libxl_domid *domid) {
return PyInt_FromLong(*domid);
}
+PyObject *attrib__libxl_devid_get(libxl_devid *devid) {
+ return PyInt_FromLong(*devid);
+}
+
PyObject *attrib__struct_in_addr_get(struct in_addr *pptr)
{
PyErr_SetString(PyExc_NotImplementedError, "Getting in_addr");
--
1.7.4.4
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