6f7fc2204b
* Added a directory argument for notify_{stat/attribute}_changed().
* This allows to watch only a directory, and get the notifications for
all of its files, not just add/remove entry notifications.
102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/*
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* Copyright 2003-2016 Haiku Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _NODE_MONITOR_H
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#define _NODE_MONITOR_H
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#include <StorageDefs.h>
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// Flags for the watch_node() call.
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// Note that B_WATCH_MOUNT is NOT included in B_WATCH_ALL.
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// You may prefer to use BVolumeRoster for volume watching.
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enum {
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B_STOP_WATCHING = 0x0000,
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B_WATCH_NAME = 0x0001,
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B_WATCH_STAT = 0x0002,
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B_WATCH_ATTR = 0x0004,
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B_WATCH_DIRECTORY = 0x0008,
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B_WATCH_ALL = 0x000f,
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B_WATCH_MOUNT = 0x0010,
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B_WATCH_INTERIM_STAT = 0x0020,
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B_WATCH_CHILDREN = 0x0040
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};
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// The "opcode" field of the B_NODE_MONITOR notification message you get.
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// The presence and meaning of the other fields in that message specifying what
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// exactly caused the notification depend on this value.
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#define B_ENTRY_CREATED 1
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#define B_ENTRY_REMOVED 2
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#define B_ENTRY_MOVED 3
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#define B_STAT_CHANGED 4
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#define B_ATTR_CHANGED 5
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#define B_DEVICE_MOUNTED 6
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#define B_DEVICE_UNMOUNTED 7
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// More specific info in the "cause" field of B_ATTR_CHANGED notification
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// messages. (Haiku only)
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#define B_ATTR_CREATED 1
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#define B_ATTR_REMOVED 2
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// B_ATTR_CHANGED is reused
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// More specific info in the "fields" field of B_STAT_CHANGED notification
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// messages, specifying what parts of the stat data have actually been
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// changed. (Haiku only)
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enum {
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B_STAT_MODE = 0x0001,
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B_STAT_UID = 0x0002,
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B_STAT_GID = 0x0004,
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B_STAT_SIZE = 0x0008,
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B_STAT_ACCESS_TIME = 0x0010,
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B_STAT_MODIFICATION_TIME = 0x0020,
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B_STAT_CREATION_TIME = 0x0040,
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B_STAT_CHANGE_TIME = 0x0080,
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B_STAT_INTERIM_UPDATE = 0x1000
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};
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// C++ callable Prototypes
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// Since you are not able to parse BMessages from plain C, there is no
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// API exported.
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#if defined(__cplusplus) && !defined(_KERNEL_MODE)
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// these are only needed for the function exports
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#include <Node.h>
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#include <Messenger.h>
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class BLooper;
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class BHandler;
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extern status_t watch_volume(dev_t volume, uint32 flags, BMessenger target);
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extern status_t watch_volume(dev_t volume, uint32 flags,
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const BHandler* handler, const BLooper* looper = NULL);
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extern status_t watch_node(const node_ref* node, uint32 flags,
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BMessenger target);
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extern status_t watch_node(const node_ref* node, uint32 flags,
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const BHandler* handler, const BLooper* looper = NULL);
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extern status_t stop_watching(BMessenger target);
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extern status_t stop_watching(const BHandler* handler, const BLooper* looper = NULL);
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#endif // __cplusplus && !_KERNEL_MODE
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#endif // _NODE_MONITOR_H
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