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 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 acl_free(3) with the (void*)acl_t returned by
acl_get_fd() as an argument.
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
[EBADF] The fd argument is not a valid file descriptor.
[ENOMEM] The ACL working storage requires more memory
than is allowed by the hardware 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
This page is part of the acl (manipulating access control lists)
project. Information about the project can be found at
http://savannah.nongnu.org/projects/acl. If you have a bug report
for this manual page, see
⟨http://savannah.nongnu.org/bugs/?group=acl⟩. This page was
obtained from the project's upstream Git repository
⟨git://git.savannah.nongnu.org/acl.git⟩ on 2021-04-01. (At that
time, the date of the most recent commit that was found in the
repository was 2021-03-16.) If you discover any rendering problems
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or more up-to-date source for the page, or you have corrections or
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of the original manual page), send a mail to email@example.com
Linux ACL March 23, 2002 Linux ACL