Section: C Library Functions (3)Local indexUp BSD mandoc
- get an ACL by file descriptor
Linux Access Control Lists library (libacl, -lacl).
Fn acl_get_fd int fd
function retrieves the access ACL associated with the file referred to by
The ACL is placed into working storage and
returns a pointer to that storage.
In order to read an ACL from an object, a process must have read access to
the object's attributes.
This function may cause memory to be allocated. The caller should free any
releasable memory, when the new ACL is no longer required, by calling
as an argument.
On success, this function shall return a pointer to the
working storage. On error, a value of
shall be returned, and
is set appropriately.
If any of the following conditions occur, the
function returns a value of
to the corresponding value:
Bq Er EBADF
argument is not a valid file descriptor.
Bq Er ENOMEM
The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management constraints.
Bq Er ENOTSUP
The file system on which the file identified by
is located does not support ACLs, or ACLs are disabled.