Add ACL_IS_TRIVIAL and ACL_IS_DIR flags as ACL-wide flags in the system.nfs4_acl_xdr generated on getxattr requests. This are non-RFC flags that are useful for userspace applications (especially the ACL_IS_TRIVIAL flag as it can be used to avoid relatively expensive ACL-related operations). Also add system.nfs4_acl_xdr to xattr results if ACL is not trivial. This duplicates POSIX ACL behavior where whether an ACL is set on a path can be determined via listxattr(). Since the ACL is not actually removed, we check whether the ZFS_ACL_TRIVIAL is set. If the flag is not set, then we omit the xattr name from the list. This allows users to determine whether ACL is trivial from listxattr(). Signed-off-by: Andrew Walker <awalker@ixsystems.com> |
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