Bug #69473 [NEW]: bug in symlink() prevents relative symlinks on Windows

From: email at spikx dot net Operating system: Windows 7 PHP version: 5.6.8 Package: Win32API related Bug Type: Bug Bug description:bug in symlink() prevents relative symlinks on Windows Description: ------------ As far as I checked, the following applies to any PHP version since the symlink function was introduced (in PHP 5.3). Currently it is impossible under Windows to create relative symbolic links with PHP's symlink function. It will always fail with the message "Could not fetch file information". The reason is the following: At line #169 ( https://github.com/php/php-src/blob/master/ext/standard/link_win32.c#L169 ) the function checks, if the $target ("topath" in the C function) actually exists: if ((attr = GetFileAttributes(topath)) == INVALID_FILE_ATTRIBUTES) { ... } However, the Win32API function "GetFileAttributes" expects the path to be either absolute or relative **to the CWD**! This means that this check will always fail, if you want to use a relative symlink, since the relative path of the symlink is relative to the $source's directory, not relative to the CWD. Test script: --------------- <?php mkdir('foo1'); mkdir('foo2'); symlink( '../foo2', 'foo1/foo3' ); Expected result: ---------------- /foo1 should contain a directory symlink to ../foo2 (i.e. the /foo2 directory in the root folder) Actual result: -------------- Under Windows: Warning: symlink(): Could not fetch file information(error 2) in index.php on line 6 Under Linux: foo1 contains a directory symlink to ../foo2 (i.e. the foo2 directory in CWD) -- Edit bug report at https://bugs.php.net/bug.php?id=69473&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69473&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69473&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69473&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69473&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69473&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69473&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69473&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69473&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69473&r=support Expected behavior: https://bugs.php.net/fix.php?id=69473&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69473&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69473&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69473&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69473&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69473&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69473&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69473&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69473&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69473&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69473&r=mysqlcfg