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


SYNOPSIS

     acl_t
     acl_dup(acl_t acl)


DESCRIPTION

     The acl_dup() function returns a pointer to a copy of the ACL pointed to
     by acl.

     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_dup() as an argument.


RETURN VALUE

     Upon successful completion, this function returns a pointer to the work­
     ing storage.  Otherwise, a value of (acl_t)NULL is returned, and errno is
     set to indicate the error.


ERRORS

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

     [EINVAL]      The argument acl is not a valid pointer to an ACL.

     [ENOMEM]      The acl_t to be returned requires more memory than is al­
                   lowed by the hardware or system-imposed memory management
                   constraints.


STANDARDS

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


SEE ALSO

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


AUTHOR

     Derived from the FreeBSD manual pages written by Robert N M Watson
     <rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher
     <a.gruenbacher@computer.org>.

 Linux ACL                      March 23, 2002                               1

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