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In computer security, an access-control list (ACL) is a list of permissions [a] associated with a system resource (object or facility). An ACL specifies which users or system processes are granted access to resources, as well as what operations are allowed on given resources. [1] Each entry in a typical ACL specifies a subject and an operation.
+ (plus) suffix indicates an access control list that can control additional permissions.. (dot) suffix indicates an SELinux context is present. Details may be listed with the command ls -Z. @ suffix indicates extended file attributes are present. To represent the setuid, setgid and sticky or text attributes, the executable character (x or ...
This is a glossary of common file system terms. [1] [2] Access control lists Does the file system support multi-user access control lists (ACLs). Attributes Lists the basic file attributes available. Bad sector allocation Describe how the file system allocates and isolates bad sectors. Directory structure Describes how the subdirectories are ...
NTFS adds several features that FAT and HPFS lack, including: access control lists (ACLs); filesystem encryption; transparent compression; sparse files; file system journaling and volume shadow copy, a feature that allows backups of a system while in use.
procfs – a pseudo-file system, used to access kernel information about processes; tmpfs – in-memory temporary file system (on Unix-like platforms) sysfs – a virtual file system in Linux holding information about buses, devices, firmware, filesystems, etc. debugfs – a virtual file system in Linux for accessing and controlling kernel ...
Access control can also restrict access by program in order to ensure that data is modified in a controlled way. Examples include passwords stored in the metadata of the file or elsewhere and file permissions in the form of permission bits, access control lists, or capabilities. The need for file system utilities to be able to access the data ...
An access control expression with respect to a computer file system is a list of Boolean expressions attached to a file object.An access control expression specifies a Boolean formula that defines which users or system processes are granted access to objects, as well as what operations are allowed on given objects.
In Microsoft Windows, cacls, and its replacement icacls, are native command-line utilities that can display and modify the security descriptors on files and folders. [1] [2] An access-control list is a list of permissions for securable object, such as a file or folder, that controls who can access it.