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What is default ACL and what is the use of mask in ACL?
The mask indicates the maximum permissions allowed for users (other than the owner) and for groups. Specifies the list of one or more ACL entries to set for specific users and groups on the file or directory. You can also set default ACL entries on a directory.
What is a default ACL?
A Directory with a Default ACL. Directories can be equipped with a special kind of ACL — a default ACL. The default ACL defines the access permissions all objects under this directory inherit when they are created. A default ACL affects subdirectories as well as files.
What does Umask 022 mean?
Brief summary of umask value meanings: umask 022 – Assigns permissions so that only you have read/write access for files, and read/write/search for directories you own. All others have read access only to your files, and read/search access to your directories.
What is umask 000?
umask 000. allow read, write, and execute permission for all (potential security risk) umask 077. allow read, write, and execute permission for the file’s owner, but prohibit read, write, and execute permission for everyone else.
How do I change the mask setting in ACL?
The mask setting will automatically update again indirectly when you modify permissions using either the chmod or setfacl command. But you can also directly change the mask setting as well. E.g. if you wan to set the mask to “r-x”, then you do:
When do I need to set default ACL entries?
When you set default ACL entries for specific users and groups on a directory for the first time, you must also set default ACL entries for the file owner, file group, others, and the ACL mask (these are required and are the first four default ACL entries in the table below).
What is the difference between default ACLs and access ACLS?
Default ACLs are templates of ACLs associated with a directory that determine the access ACLs for any child items that are created under that directory. Files do not have default ACLs. Both access ACLs and default ACLs have the same structure.
How to set access ACL in data lake storage Gen2?
For a new Data Lake Storage Gen2 file system, the mask for the access ACL of the root directory (“/”) defaults to 750 for directories and 640 for files. Files do not receive the X bit as it is irrelevant to files in a store-only system. The mask may be specified on a per-call basis.