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17. Access Control Lists > ACL Permission-Checking Algorithm

ACL Permission-Checking Algorithm

Permission checking on a file that has an ACL is performed in the same circumstances as for the traditional file permissions model (Permission-Checking Algorithm). Checks are performed in the following order, until one of the criteria is matched:

  1. If the process is privileged, all access is granted. There is one exception to this statement, analogous to the traditional permissions model described in Permission-Checking Algorithm. When executing a file, a privileged process is granted execute permission only if that permission is granted via at least one of the ACL entries on the file.


  

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