PHP sem_get() results in "Permission denied"

Asked Sep 27 '17 at 14:35

Active Sep 27 '17 at 16:45

Viewed 424 times

The sem_get method always throws. What can be the cause of this issue?

We are running a centos server with php-fpm and selinux. The audit.log does not contain any information about this particular error.

Does the sem_get store the semaphores on disk?

Update: The sem_get method works if called via cli

edited Sep 27 '17 at 14:41

asked Sep 27 '17 at 14:35

user634545

http://php.net/manual/en/function.sem-get.php has a warning about creating the semaphore outside of PHP. Also it might help others if you show your actual function call, and the parameters you're passing. – Daren Chandisingh Sep 27 '17 at 14:38
Thanks, but the semaphore is created within php. – user634545 Sep 27 '17 at 14:39
It will still help to show actual code. People might be able to spot an error in how you're creating/accessing it. – Daren Chandisingh Sep 27 '17 at 14:41
It is only a function call, nothing more. – user634545 Sep 27 '17 at 14:43
A function call with parameters. =) Anyway, the fact it works via CLI does suggest that it's disk access-based since your user account may have different permissions from the web server account – Daren Chandisingh Sep 27 '17 at 14:47

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