Bug #61608 [NEW]: sem_get problem

From: Operating system: linux 2.6.32 PHP version: 5.4.0 Package: *General Issues Bug Type: Bug Bug description:sem_get problem Description: ------------ --- From manual page: http://www.php.net/function.sem-get#refsect1-function.sem-get- description --- The sem_get function don't work if the semaphore already exist : by example created by an other application (made in C code). --> No sem_id returned. If the php code is executed before this external application, the creation and sharing runs correctly.... sem_get seems able to make a new semaphore.... but not take back the Id of an existing semaphore. Test script: --------------- // On demande l’accès $sem_id = sem_get(0x4d2, 1, 0666, 1); <--- Return nothing // l'accès au block mémoire est autorisé if(sem_acquire ($sem_id)) { $shm_id = shmop_open(0x4d2, "c", 0666, 200); if(!$shm_id) { echo "Impossible de creer la memoire partagee" . "<br />"; // on libère l'accès sem_remove($sem_id); exit; } ..... Expected result: ---------------- Be able to get back the sem_id of an exiting semaphore -- Edit bug report at https://bugs.php.net/bug.php?id=61608&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=61608&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=61608&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=61608&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=61608&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=61608&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=61608&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=61608&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=61608&r=needscript Try newer version: https://bugs.php.net/fix.php?id=61608&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=61608&r=support Expected behavior: https://bugs.php.net/fix.php?id=61608&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=61608&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=61608&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=61608&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=61608&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=61608&r=dst IIS Stability: https://bugs.php.net/fix.php?id=61608&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=61608&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=61608&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=61608&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=61608&r=mysqlcfg