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Framework to support disabling publications via IOCTL

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This commit is contained in:
Lorenz Meier 2014-01-12 11:52:41 +01:00
parent c6e196edca
commit 9bf512cac8
3 changed files with 14 additions and 3 deletions
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11
src/drivers/device/cdev.cpp
View File

@ -1,6 +1,6 @@
/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -38,6 +38,7 @@
*/
#include "device.h"
#include "drivers/drv_device.h"
#include <sys/ioctl.h>
#include <arch/irq.h>
@ -93,6 +94,7 @@ CDev::CDev(const char *name,
Device(name, irq),
// public
// protected
_pub_blocked(false),
// private
_devname(devname),
_registered(false),
@ -256,6 +258,13 @@ CDev::ioctl(struct file *filp, int cmd, unsigned long arg)
case DIOC_GETPRIV:
*(void **)(uintptr_t)arg = (void *)this;
return OK;
break;
case DEVIOCSPUBBLOCK:
_pub_blocked = (arg != 0);
break;
case DEVIOCGPUBBLOCK:
return _pub_blocked;
break;
}
return -ENOTTY;

2
src/drivers/device/device.cpp
View File

@ -1,6 +1,6 @@
/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions

4
src/drivers/device/device.h
View File

@ -1,6 +1,6 @@
/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -415,6 +415,8 @@ protected:
*/
virtual int unregister_class_devname(const char *class_devname, unsigned class_instance);
bool _pub_blocked; /**< true if publishing should be blocked */
private:
static const unsigned _max_pollwaiters = 8;