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Mac File Change Event

Posted on 2004-10-10
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Last Modified: 2013-12-26
Does OS X have an easy OS hook to detect file changes in the filesystem?

What I need is a way to detect when a user writes to a filesystem in real time - as you might have in a virus scanner that needs to scan any changes that get written to the filesystem.

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Question by:rcovington
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brettmjohnson earned 2000 total points
ID: 12273153
The File Notification APIs deal with this, specifically FNSubscribe() and FNSubscribeByPath() in File.h:
http://developer.apple.com/documentation/Carbon/Reference/File_Manager/file_manager/function_group_48.html

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by:rcovington
ID: 12375055
Thanks!  That gave me a starting point to solve my issue. For anyone else going down this road, in addition to FNSubscribe, OS X has the kqueue interface which also provides some of this information.

Thanks for the quick response.
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