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Full Discussion: absolute path
Top Forums Programming absolute path Post 302120316 by jim mcnamara on Tuesday 5th of June 2007 04:58:03 PM
Old 06-05-2007
You do realize there can be more than one hard link for a given file, plus there may be multiple symlinks as well. When you call fopen ("/path/to/foo", "r"), foo can easily be a link. So you may not have the real path to start with.

So going "up" the file tree is not going to give you a perfect answer all the time.

I'm not giving you a hard time, it's just that working out whre a file is in all the filesystems on one box is a daunting task. find / -name <> -inode <> is about as good as it gets, even if it is really slow.

In your example, if you're postive foldera or folderb or folderc are under /root then your task is:

get st_dev and st_ino for the file you do have
with popen(), "find /root -name afile -inode st_ino", then stat all of the files returned.
check the st_dev values, when you have a match you have the file.
 

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WINCACHE_RPLIST_FILEINFO(3)						 1					       WINCACHE_RPLIST_FILEINFO(3)

wincache_rplist_fileinfo - Retrieves information about resolve file path cache

SYNOPSIS
array wincache_rplist_fileinfo ([bool $summaryonly = false]) DESCRIPTION
Retrieves information about cached mappings between relative file paths and corresponding absolute file paths. RETURN VALUES
Array of meta data about the resolve file path cache or FALSE on failure The array returned by this function contains the following elements: o total_file_count - total number of file path mappings stored in the cache o rplist_entries - an array that contains the information about all the cached file paths: o resolve_path - path to a file o subkey_data - corresponding absolute path to a file EXAMPLES
Example #1 A wincache_rplist_fileinfo(3) example <pre> <?php print_r(wincache_rplist_fileinfo()); ?> </pre> The above example will output: Array ( [total_file_count] => 5 [rplist_entries] => Array ( [1] => Array ( [resolve_path] => checkcache.php [subkey_data] => c:inetpubwwwroot|c:inetpubwwwrootcheckcache.php ) [2] => Array (...iterates for each cached file) ) ) SEE ALSO
wincache_fcache_meminfo(3), wincache_fcache_fileinfo(3), wincache_ocache_fileinfo(3), wincache_ocache_meminfo(3), wincache_rplist_mem- info(3), wincache_refresh_if_changed(3), wincache_ucache_meminfo(3), wincache_ucache_info(3), wincache_scache_info(3), wincache_scache_mem- info(3). PHP Documentation Group WINCACHE_RPLIST_FILEINFO(3)
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