#46245 [NEW]: is_writable returns 'true' on read-only files over NFS

From: gabe at mudbugmedia dot com Operating system: Gentoo Linux 2.6.22-hardened-r8 PHP version: 5.2.6 PHP Bug Type: Filesystem function related Bug description: is_writable returns 'true' on read-only files over NFS Description: ------------ When using is_writable() on a read-only file mounted over NFS, it incorrectly returns true. In our environment, the NFS server is running MacOSX Server 10.5 mounted with the following fstab options: 10.10.10.10:/Volumes/Sack /sack nfs rw,rsize=32768,soft,intr,tcp,nosuid 0 1 Reproduce code: --------------- gabebug@proto /tmp $ ls -ld /sack/test dr-xr-xr-x 2 joshbug mudbug 68 Oct 6 14:45 /sack/test/ gabebug@proto /tmp $ ls -ld /tmp/test dr-xr-xr-x 2 joshbug mudbug 4096 Oct 6 14:44 /tmp/test/ gabebug@proto /tmp $ cat is_writable_test.php <?php var_dump( is_writable('/sack/test'), // /sack is the NFS mount is_writable('/tmp/test') ); gabebug@proto /tmp $ php -f is_writable_test.php Expected result: ---------------- bool(false) bool(false) Actual result: -------------- bool(true) bool(false) -- Edit bug report at http://bugs.php.net/?id=46245&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46245&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46245&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46245&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46245&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=46245&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46245&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46245&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46245&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46245&r=support Expected behavior: http://bugs.php.net/fix.php?id=46245&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46245&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46245&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46245&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46245&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46245&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46245&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46245&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46245&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46245&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46245&r=mysqlcfg