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 2  .\" Copyright (c) 2000, 2002 Robert N. M. Watson
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28  .\" $FreeBSD: src/lib/libc/posix1e/acl_dup.3,v 1.12 2002/12/29 20:52:42 rwatson Exp $
29  .\"
30  .Dd January 28, 2000
31  .Dt ACL_DUP 3
32  .Os
33  .Sh NAME
34  .Nm acl_dup
35  .Nd duplicate an ACL
36  .Sh LIBRARY
37  .Lb libc
38  .Sh SYNOPSIS
39  .In sys/types.h
40  .In sys/acl.h
41  .Ft acl_t
42  .Fn acl_dup "acl_t acl"
43  .Sh DESCRIPTION
44  The
45  .Fn acl_dup
46  function returns a pointer to a copy of the ACL pointed to by the argument
47  .Va acl .
48  .Pp
49  This function may cause memory to be allocated.  The caller should free any
50  releasable memory, when the new ACL is no longer required, by calling
51  .Xr acl_free 3
52  with the
53  .Va (void*)acl_t
54  as an argument.
55  .Pp
56  Any existing ACL pointers that refer to the ACL referred to by
57  .Va acl
58  shall continue to refer to the ACL.
59  .Sh RETURN VALUES
60  Upon successful completion, this function shall return a pointer to the
61  duplicate ACL.  Otherwise, a value of
62  .Va (acl_t)NULL
63  shall be returned, and
64  .Va errno
65  shall be set to indicate the error.
66  .Sh ERRORS
67  If any of the following conditions occur, the
68  .Fn acl_init
69  function shall return a value of
70  .Va (acl_t)NULL
71  and set
72  .Va errno
73  to the corresponding value:
74  .Bl -tag -width Er
75  .It Bq Er EINVAL
76  Argument
77  .Va acl
78  does not point to a valid ACL.
79  .It Bq Er ENOMEM
80  The
81  .Va acl_t
82  to be returned requires more memory than is allowed by the hardware or
83  system-imposed memory management constraints.
84  .El
85  .Sh SEE ALSO
86  .Xr acl 3 ,
87  .Xr acl_free 3 ,
88  .Xr acl_get 3 ,
89  .Xr posix1e 3
90  .Sh STANDARDS
91  POSIX.1e is described in IEEE POSIX.1e draft 17.
92  .Sh AUTHORS
93  .An Michael Smith
94  .An Robert N M Watson