ACL_COPY_INT(3)         BSD Library Functions Manual         ACL_COPY_INT(3)

NAME         top

     acl_copy_int — copy an ACL from external to internal representation

LIBRARY         top

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

SYNOPSIS         top

     #include <sys/types.h>
     #include <sys/acl.h>

     acl_copy_int(const void *buf_p);

DESCRIPTION         top

     The acl_copy_int() function copies an exportable, contiguous, persis‐
     tent form of an ACL, pointed to by buf_p, to the internal representa‐

     This function may cause memory to be allocated.  The caller should free
     any releasable memory, when the new ACL is no longer required, by call‐
     ing acl_free(3) with the (void*)acl_t returned by acl_copy_int() as an

RETURN VALUE         top

     Upon success, the acl_copy_int() function returns a pointer that refer‐
     ences the ACL in working storage.  On error, a value of (acl_t)NULL is
     returned, and errno is set appropriately.

ERRORS         top

     If any of the following conditions occur, the acl_copy_int() function
     returns a value of (acl_t)NULL and sets errno to the corresponding

     [EINVAL]           The buffer pointed to by the argument buf_p does not
                        contain a valid external form ACL.

     [ENOMEM]           The ACL working storage requires more memory than is
                        allowed by the hardware or system-imposed memory
                        management constraints.

STANDARDS         top

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

SEE ALSO         top

     acl_copy_ext(3), acl_get_entry(3), acl_free(3), acl(5)

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 2018-02-02.  (At that time,
     the date of the most recent commit that was found in the repository was
     2018-01-21.)  If you discover any rendering problems in this HTML ver‐
     sion of the page, or you believe there is a better or more up-to-date
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     page), send a mail to

Linux ACL                      March 23, 2002                      Linux ACL