Fix bug #67244: Wrong owner:group for listening unix socket

Update FPM www.conf to reflect the actual logic

NEWS

@@ -22,6 +22,8 @@ PHP                                                                        NEWS
 - FPM:
   . Fixed bug GH-9981 (FPM does not reset fastcgi.error_header).
     (Jakub Zelenka)
+  . Fixed bug #67244 (Wrong owner:group for listening unix socket).
+    (Jakub Zelenka)
 
 - LDAP:
   . Fixed bug GH-10112 (LDAP\Connection::__construct() refers to ldap_create()).

sapi/fpm/www.conf.in

@@ -17,9 +17,14 @@
 ; Default Value: none
 ;prefix = /path/to/pools/$pool
 
-; Unix user/group of processes
-; Note: The user is mandatory. If the group is not set, the default user's group
-;       will be used.
+; Unix user/group of the child processes. This can be used only if the master
+; process running user is root. It is set after the child process is created.
+; The user and group can be specified either by their name or by their numeric
+; IDs.
+; Note: If the user is root, the executable needs to be started with
+        --allow-to-run-as-root option to work.
+; Default Values: The user is set to master process running user by default.
+;                 If the group is not set, the user's group is used.
 user = @php_fpm_user@
 group = @php_fpm_group@
 
@@ -43,11 +48,12 @@ listen = 127.0.0.1:9000
 ; permissions must be set in order to allow connections from a web server. Many
 ; BSD-derived systems allow connections regardless of permissions. The owner
 ; and group can be specified either by name or by their numeric IDs.
-; Default Values: user and group are set as the running user
-;                 mode is set to 0660
+; Default Values: Owner is set to the master process running user. If the group
+;                 is not set, the owner's group is used. Mode is set to 0660.
 ;listen.owner = @php_fpm_user@
 ;listen.group = @php_fpm_group@
 ;listen.mode = 0660
+
 ; When POSIX Access Control Lists are supported you can set them using
 ; these options, value is a comma separated list of user/group names.
 ; When set, listen.owner and listen.group are ignored