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Driver: Track system time changes.

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This commit is contained in:
Nodir Temirkhodjaev 2018-12-08 08:56:15 +05:00
parent 281e403df8
commit 252d34a2e8
1 changed files with 55 additions and 0 deletions
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55
src/driver/fortdrv.c
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@ -47,6 +47,9 @@ typedef struct fort_device {
PCALLBACK_OBJECT power_cb_obj; PCALLBACK_OBJECT power_cb_obj;
PVOID power_cb_reg; PVOID power_cb_reg;
PCALLBACK_OBJECT systime_cb_obj;
PVOID systime_cb_reg;
FORT_BUFFER buffer; FORT_BUFFER buffer;
FORT_STAT stat; FORT_STAT stat;
FORT_DEFER defer; FORT_DEFER defer;
@ -1079,6 +1082,52 @@ fort_power_callback_unregister (void)
} }
} }
static void
fort_systime_callback (PVOID context, PVOID event, PVOID specifics)
{
UNUSED(context);
UNUSED(event);
UNUSED(specifics);
if (g_device->app_timer.running) {
fort_app_period_timer();
}
}
static NTSTATUS
fort_systime_callback_register (void)
{
OBJECT_ATTRIBUTES obj_attr;
UNICODE_STRING obj_name;
NTSTATUS status;
RtlInitUnicodeString(&obj_name, L"\\Callback\\SetSystemTime");
InitializeObjectAttributes(&obj_attr, &obj_name,
OBJ_CASE_INSENSITIVE, NULL, NULL);
status = ExCreateCallback(&g_device->systime_cb_obj, &obj_attr, FALSE, TRUE);
if (NT_SUCCESS(status)) {
g_device->systime_cb_reg = ExRegisterCallback(g_device->systime_cb_obj,
fort_systime_callback, NULL);
}
return status;
}
static void
fort_systime_callback_unregister (void)
{
if (g_device->systime_cb_reg != NULL) {
ExUnregisterCallback(g_device->systime_cb_reg);
}
if (g_device->systime_cb_obj != NULL) {
ObDereferenceObject(g_device->systime_cb_obj);
}
}
static void static void
fort_driver_unload (PDRIVER_OBJECT driver) fort_driver_unload (PDRIVER_OBJECT driver)
{ {
@ -1094,6 +1143,7 @@ fort_driver_unload (PDRIVER_OBJECT driver)
fort_buffer_close(&g_device->buffer); fort_buffer_close(&g_device->buffer);
fort_power_callback_unregister(); fort_power_callback_unregister();
fort_systime_callback_unregister();
if (!g_device->prov_boot) { if (!g_device->prov_boot) {
fort_prov_unregister(0); fort_prov_unregister(0);
@ -1192,6 +1242,11 @@ DriverEntry (PDRIVER_OBJECT driver, PUNICODE_STRING reg_path)
if (NT_SUCCESS(status)) { if (NT_SUCCESS(status)) {
status = fort_power_callback_register(); status = fort_power_callback_register();
} }
/* Register system time change callback */
if (NT_SUCCESS(status)) {
status = fort_systime_callback_register();
}
} }
} }