ACL_GET_FD(3) BSD Library Functions Manual ACL_GET_FD(3)
acl_get_fd -- get an ACL by file descriptor
Linux Access Control Lists library (libacl, -lacl).
The acl_get_fd() function retrieves the access ACL associated with the file referred to by
fd. The ACL is placed into working storage and acl_get_fd() returns a pointer to that stor-
In order to read an ACL from an object, a process must have read access to the object's
This function may cause memory to be allocated. The caller should free any releasable mem-
ory, when the new ACL is no longer required, by calling acl_free(3) with the (void*)acl_t
returned by acl_get_fd() as an argument.
Upon successful completion, this function shall return a pointer to the working storage.
Otherwise, a value of (acl_t)NULL shall be returned, and errno shall be set to indicate the
If any of the following conditions occur, the acl_get_fd() function returns a value of
(acl_t)NULL and sets errno to the corresponding value:
[EBADF] The fd argument is not a valid file descriptor.
[ENOMEM] The ACL working storage requires more memory than is allowed by the hard-
ware or system-imposed memory management constraints.
[ENOTSUP] The file system on which the file identified by fd is located does not
support ACLs, or ACLs are disabled.
IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned)
acl_free(3), acl_get_entry(3), acl_get_file(3), acl_set_fd(3), acl(5)
Derived from the FreeBSD manual pages written by Robert N M Watson <rwatson@FreeBSD.org>,
and adapted for Linux by Andreas Gruenbacher <firstname.lastname@example.org>.
Linux ACL March 23, 2002 Linux ACL