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As suggested by Ingo use a B_WATCH_VOLUME flag to tell the kernel to watch

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the whole volume. Kernel part follows.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39106 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Clemens Zeidler 2010-10-24 00:49:20 +00:00
parent 32c2214392
commit bfff9df5eb
3 changed files with 24 additions and 6 deletions
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5
headers/os/storage/NodeMonitor.h
View File

@ -83,9 +83,8 @@ class BLooper;
class BHandler;
extern status_t watch_volume(const dev_t volume, uint32 flags,
BMessenger target);
extern status_t watch_volume(const dev_t volume, uint32 flags,
extern status_t watch_volume(dev_t volume, uint32 flags, BMessenger target);
extern status_t watch_volume(dev_t volume, uint32 flags,
const BHandler *handler, const BLooper *looper = NULL);
extern status_t watch_node(const node_ref *node, uint32 flags,

14
headers/private/system/node_monitor_private.h Normal file
View File

@ -0,0 +1,14 @@
/*
* Copyright 2010, Clemens Zeidler, haiku@clemens-zeidler.de.
* Distributed under the terms of the MIT License.
*/
#ifndef _NODE_MONITOR_PRIVATE_H
#define _NODE_MONITOR_PRIVATE_H
enum {
B_WATCH_VOLUME = 0xF000
};
#endif /* _NODE_MONITOR_PRIVATE_H */

11
src/kits/storage/NodeMonitor.cpp
View File

@ -15,10 +15,13 @@
#include <syscalls.h>
#include "node_monitor_private.h"
// TODO: Tests!
// watch_node
// watch_volume
/*! \brief Subscribes a target to watch node changes on a volume.
Depending of \a flags the action performed by this function varies:
@ -32,12 +35,14 @@
\return \c B_OK, if everything went fine, another error code otherwise.
*/
status_t
watch_volume(const dev_t volume, uint32 flags, BMessenger target)
watch_volume(dev_t volume, uint32 flags, BMessenger target)
{
if ((flags | B_WATCH_NAME) == 0 && (flags | B_WATCH_STAT)
&& (flags | B_WATCH_ATTR))
return B_BAD_VALUE;
flags |= B_WATCH_VOLUME;
BMessenger::Private messengerPrivate(target);
port_id port = messengerPrivate.Port();
int32 token = messengerPrivate.Token();
@ -46,7 +51,7 @@ watch_volume(const dev_t volume, uint32 flags, BMessenger target)
status_t
watch_volume(const dev_t volume, uint32 flags, const BHandler *handler,
watch_volume(dev_t volume, uint32 flags, const BHandler *handler,
const BLooper *looper)
{
return watch_volume(volume, flags, BMessenger(handler, looper));