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Top Forums Shell Programming and Scripting Detecting incoming files without busy polling Post 302225314 by redoubtable on Friday 15th of August 2008 05:54:43 AM
Old 08-15-2008
The way I see it, I'm afraid there is no simple workaround for your problem. There is no such function not even in the glibc I guess. To do something like that, you would have to go through every processes' file descriptors (in /proc/onepid/fd for Linux) and check if there is no reference to one file inside that $SOMEDIR of yours.

Nowadays you shouldn't have to worry about those things because programs don't just write to files directly. The way to do it, is writing a temporary file and then rename() it to the location you want. rename() is an atomic function (will never corrupt the file).

In shell scripting, you could use
Code:
find location -mmin 1

every minute to see what files were changed in the last minute.

Anyway, wait for more replies, there could be something that at least would get you close to what you want.
 

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MOVE_UPLOADED_FILE(3)							 1						     MOVE_UPLOADED_FILE(3)

move_uploaded_file - Moves an uploaded file to a new location

SYNOPSIS
bool move_uploaded_file (string $filename, string $destination) DESCRIPTION
This function checks to ensure that the file designated by $filename is a valid upload file (meaning that it was uploaded via PHP's HTTP POST upload mechanism). If the file is valid, it will be moved to the filename given by $destination. This sort of check is especially important if there is any chance that anything done with uploaded files could reveal their contents to the user, or even to other users on the same system. PARAMETERS
o $filename - The filename of the uploaded file. o $destination - The destination of the moved file. RETURN VALUES
Returns TRUE on success. If $filename is not a valid upload file, then no action will occur, and move_uploaded_file(3) will return FALSE. If $filename is a valid upload file, but cannot be moved for some reason, no action will occur, and move_uploaded_file(3) will return FALSE. Additionally, a warning will be issued. EXAMPLES
Example #1 Uploading multiple files <?php $uploads_dir = '/uploads'; foreach ($_FILES["pictures"]["error"] as $key => $error) { if ($error == UPLOAD_ERR_OK) { $tmp_name = $_FILES["pictures"]["tmp_name"][$key]; $name = $_FILES["pictures"]["name"][$key]; move_uploaded_file($tmp_name, "$uploads_dir/$name"); } } ?> NOTES
Note move_uploaded_file(3) is both safe mode and open_basedir aware. However, restrictions are placed only on the $destination path as to allow the moving of uploaded files in which $filename may conflict with such restrictions. move_uploaded_file(3) ensures the safety of this operation by allowing only those files uploaded through PHP to be moved. Warning If the destination file already exists, it will be overwritten. SEE ALSO
is_uploaded_file(3), rename(3), See Handling file uploads for a simple usage example. PHP Documentation Group MOVE_UPLOADED_FILE(3)
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