#16367 [Opn->Csd]: No way to get O_EXCL

ID: 16367 Updated by: iliaa@php.net Reported By: asd@suespammers.org -Status: Open +Status: Closed Bug Type: Feature/Change Request Operating System: Debian GNU/Linux PHP Version: 4.1.2 New Comment: This bug has been fixed in CVS. In case this was a PHP problem, snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites in short time. Thank you for the report, and for helping us make PHP better. In PHP5-dev this is avaliable via the 'x' mode. Previous Comments: ------------------------------------------------------------------------ [2002-03-31 16:09:20] asd@suespammers.org I can't find a way to have a script create a file in a directory to be served by Apache without exposing itself to race conditions. I can't use tempnam because that doesn't give me control over the file extension. I can't use file_exits because that will race. I can't use fopen because I can't use O_EXCL|O_CREAT. I can work around this by creating subdirectories, because mkdir fails if the directory already exists. But putting one file per directory is hardly ideal. Having a way to use O_EXCL|O_CREAT --- that is, open a file for writing, creating it, and failing if it already exists all atomicly --- would be a big help. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=16367&edit=1