acl_free(3) — Linux manual page


ACL_FREE(3)              Library Functions Manual            ACL_FREE(3)

NAME         top

       acl_free — release memory allocated to an ACL data object

LIBRARY         top

       Linux Access Control Lists library (libacl, -lacl).

SYNOPSIS         top

       <sys/types.h> <sys/acl.h> int acl_free(void *obj_p)

DESCRIPTION         top

       The acl_free() function frees any releasable memory currently
       allocated by to the ACL data object identified by obj_p.  The
       argument obj_p may identify an ACL, an ACL entry qualifier, or a
       pointer to a string allocated by the acl_to_text() function.

RETURN VALUE         top

       The acl_free() function returns the value 0 if successful;
       otherwise the value -1 is returned and the global variable errno
       is set to indicate the error.

ERRORS         top

       If any of the following conditions occur, the acl_free() function
       returns the value -1 and and sets errno to the corresponding

       [EINVAL]           The value of the argument obj_p is invalid.

STANDARDS         top

       IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)

SEE ALSO         top

       acl_copy_int(3), acl_create_entry(3), acl_dup(3),
       acl_from_text(3), acl_get_fd, acl_get_file(3), acl_init(3),

AUTHOR         top

       Derived from the FreeBSD manual pages written by Robert N M
       Watson <>, and adapted for Linux by Andreas
       Gruenbacher <>.

COLOPHON         top

       This page is part of the acl (manipulating access control lists)
       project.  Information about the project can be found at  If you have a bug
       report for this manual page, see
       ⟨⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨git://⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-01.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
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       (which is not part of the original manual page), send a mail to

Linux ACL                    March 23, 2002                  ACL_FREE(3)