Module `Linux_ext.Extended_file_attributes`

Extended attributes are name:value pairs associated with inodes (files, directories, symlinks, etc). They are extensions to the normal attributes which are associated with all inodes in the system (i.e. the 'man 2 stat' data). A complete overview of extended attributes concepts can be found in 'man 5 attr'.

getxattr retrieves the value of the extended attribute identified by name and associated with the given path in the filesystem.

The name includes a namespace prefix - there may be several, disjoint namespaces associated with an individual inode. The value is a chunk of arbitrary textual or binary data.

If the attribute exists, it is returned as Ok string. Several common errors are returned as possible constructors, namely:

ENOATTR: The named attribute does not exist, or the process has no access to this attribute.
ERANGE: The size of the value buffer is too small to hold the result.
ENOTSUP: Extended attributes are not supported by the filesystem, or are disabled.

Many other errors are possible, and will raise an exception. See the man pages for full details.

module Get_attr_result : sig ... end

val getxattr : (path:string -> name:string -> Get_attr_result.t) Core.Or_error.t

module Set_attr_result : sig ... end

val setxattr : (?⁠how:[ `Set | `Create | `Replace ] -> path:string -> name:string -> value:string -> unit -> Set_attr_result.t) Core.Or_error.t