Bug #77639 [Com]: realpath resolves NTFS junctions which are not symlinks

Edit report at https://bugs.php.net/bug.php?id=77639&edit=1 ID: 77639 Comment by: jbelli at pobox dot com Reported by: mesaverde228 at gmail dot com Summary: realpath resolves NTFS junctions which are not symlinks Status: Re-Opened Type: Bug Package: *Directory/Filesystem functions Operating System: Windows/Linux PHP Version: 7.1.26 Block user comment: N Private report: N New Comment: Windows does support symlinked directories. They can even be symlinks to UNC paths. Symlinked directories can be relative or absolute. C:\>mklink /? Creates a symbolic link. MKLINK [[/D] | [/H] | [/J]] Link Target /D Creates a directory symbolic link. Default is a file symbolic link. /H Creates a hard link instead of a symbolic link. /J Creates a Directory Junction. Link Specifies the new symbolic link name. Target Specifies the path (relative or absolute) that the new link refers to. Previous Comments: ------------------------------------------------------------------------ [2019-02-19 21:40:13] requinix@php.net There is still a bug here, even if it wasn't the one you were expecting. > there is no cross-platform solution to create sym-link that can be later > recognized by PHP the same on different OS :( The problems come from Windows and NTFS restrictions. Specifically, Windows requires the SeCreateSymbolicLinkPrivilege privilege, which Administrator has but it can also be granted to other accounts. Windows also does not support symlinked directories. But it can do symlinked files and hardlinked/junctioned directories. Besides that, PHP is as cross-platform as it can be. ------------------------------------------------------------------------ [2019-02-19 21:29:13] mesaverde228 at gmail dot com I assume issue can be closed because for subfolders within "linked" directory exists another separate ticket ------------------------------------------------------------------------ [2019-02-19 21:21:15] mesaverde228 at gmail dot com yes, you are right. "ln" tool is not a solution for me :( and as I can see there is no cross-platform solution to create sym-link that can be later recognized by PHP the same on different OS :( ------------------------------------------------------------------------ [2019-02-19 21:06:30] requinix@php.net ln is not creating a symlink. Rather, it appears to be creating a copy. 1. If it were a symlink then dir would have shown it as such. 2. By default Windows requires admin privileges to create symlinks. 3. Create a file in one directory and it will not appear in the other. 4. If I create a large file in the original and try to ln -s to it, ln takes time when the operation should be instant. ------------------------------------------------------------------------ [2019-02-19 20:23:25] mesaverde228 at gmail dot com Ok, install git and use "ln" from distribution to create symbolik link like on Linux system rm -rf D:\test\symlinkedcachefolder ln -s D:\test\realcachefolder D:\test\symlinkedcachefolder dir output D:\test>dir Volume in drive D is dev Volume Serial Number is ECD3-824B Directory of D:\test 02/19/2019 11:14 PM <DIR> . 02/19/2019 11:14 PM <DIR> .. 02/19/2019 09:51 PM <DIR> realcachefolder 02/19/2019 11:14 PM <DIR> symlinkedcachefolder 0 File(s) 0 bytes 4 Dir(s) 34,891,960,320 bytes free Next use steps from previous STR php -r "var_dump(realpath('D:/test/symlinkedcachefolder'));" php -r "var_dump(__DIR__);" Will output D:\test\symlinkedcachefolder>php -r "var_dump(realpath('D:/test/symlinkedcachefolder'));" string(28) "D:\test\symlinkedcachefolder" D:\test\symlinkedcachefolder>php -r "var_dump(__DIR__);" string(28) "D:\test\symlinkedcachefolder" and script will return following D:\test\symlinkedcachefolder>php index.php array(4) { ["realpath(__DIR__)"]=> string(28) "D:\test\symlinkedcachefolder" ["realpath("D:\test\symlinkedcachefolder\gretta")"]=> bool(false) ["dirname(__DIR__)"]=> string(7) "D:\test" ["dirname(__DIR__ . "\gretta")"]=> string(28) "D:\test\symlinkedcachefolder" } Totally different result comparing to junctions or native soft links in windows and not the same as on Linux fo links created using "ln" tool ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=77639 -- Edit this bug report at https://bugs.php.net/bug.php?id=77639&edit=1