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Bug #42038 realpath does not resolve symbolic link
Submitted: 2007-07-18 17:16 UTC Modified: 2008-08-26 23:02 UTC
Votes:2
Avg. Score:3.0 ± 0.0
Reproduced:2 of 2 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (50.0%)
From: kraghuba at in dot ibm dot com Assigned: fb-req-jani (profile)
Status: Not a bug Package: Filesystem function related
PHP Version: 5CVS-2007-07-18 (snap) OS: MacOSX, FreeBSD
Private report: No CVE-ID: None
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 [2007-07-18 17:16 UTC] kraghuba at in dot ibm dot com 
Description:
------------
realpath() doesn't resolve symlink and returns the link file name when input path is a link path.

As per the documentation at http://in.php.net/manual/en/function.realpath.php, The resulting path will have no symbolic link, '/./' or '/../' components.

Applicable to php5.2.4 only on MacOS X.

Please check testcase symlink_link_linkinfo_is_link_variation6.phpt.


Reproduce code:
---------------
<?php
$file_path = dirname(__FILE__);
$filename = "$file_path/file.tmp";
$linkname = "$file_path/link.tmp";

$fp = fopen($filename, "w");
fclose($fp);

symlink($filename, $linkname); 
var_dump( realpath($linkname) );

unlink($linkname);
unlink($filename);
?>

Expected result:
----------------
string(%d) "%s/file.tmp"

Actual result:
--------------
string(%d) "%s/link.tmp"

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 [2007-07-19 03:21 UTC] kraghuba at in dot ibm dot com 
The reference to testcase symlink_link_linkinfo_is_link_variation6.phpt is wrong. The write testcases to check are :
ext/standard/tests/file/readlink_realpath_basic1.phpt
ext/standard/tests/file/readlink_realpath_variation1.phpt
ext/standard/tests/file/readlink_realpath_variation2.phpt

The similar failure is also noticed on FreeBSD.
(FreeBSD - FreeBSD lindsay.php.is 6.2-STABLE FreeBSD 6.2-STABLE #1: Thu Jun 28 22:12:54 CEST 2007 )

MACOSX details:
Darwin - Darwin thought 8.10.1 Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386 i386
 [2008-08-12 08:54 UTC] jani@php.net 
I'm guessing this should be fixed in PHP_5_3 and HEAD by the commit by Dmitry?
 [2008-08-18 04:34 UTC] kraghuba at in dot ibm dot com 
Hi Jani,

I do not MacOSX/FreeBSD system to verify this. If you know someone who has, pls request for verfication. 

PS: When i raised this defect ,i used test run report sent by others over the php-qa list.

with Regards,
Raghubansh
 [2008-08-26 23:02 UTC] jani@php.net 
Don't open bug reports in behalf of anyone..
 
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