1.\"- 2.\" Copyright (c) 2000 Robert N. M. Watson 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD: src/lib/libposix1e/acl_get.3,v 1.3.2.5 2001/12/20 16:27:06 ru Exp $ 27.\" $DragonFly: src/lib/libposix1e/acl_get.3,v 1.3 2004/03/11 12:28:52 hmp Exp $ 28.\" 29.Dd January 28, 2000 30.Dt ACL_GET 3 31.Os 32.Sh NAME 33.Nm acl_get_fd , 34.Nm acl_get_fd_np , 35.Nm acl_get_file 36.Nd get an ACL for a file 37.Sh LIBRARY 38.Lb libposix1e 39.Sh SYNOPSIS 40.In sys/types.h 41.In sys/acl.h 42.Ft acl_t 43.Fn acl_get_file "const char *path_p" "acl_type_t type" 44.Ft acl_t 45.Fn acl_get_fd "int fd" 46.Ft acl_t 47.Fn acl_get_fd_np "int fd" "acl_type_t type" 48.Sh DESCRIPTION 49The 50.Fn acl_get_file , 51.Fn acl_get_fd , 52and 53.Fn acl_get_fd_np 54each allow the retrieval of an ACL from a file. 55.Fn acl_get_file 56is a POSIX.1e call that allows the retrieval of a 57specified type of ACL from a file by name; 58.Fn acl_get_fd 59is a POSIX.1e call that allows the retrieval of an ACL of type 60ACL_TYPE_ACCESS 61from a file descriptor. 62.Fn acl_get_fd_np 63is a non-portable form of 64.Fn acl_get_fd 65that allows the retrieval of any type of ACL from a file descriptor. 66.Pp 67This function may cause memory to be allocated. The caller should free 68any releasable memory, when the new ACL is no longer required, by calling 69.Xr acl_free 3 70with the 71.Va (void *)acl_t 72as an argument. 73.Pp 74The ACL in the working storage is an independent copy of the ACL associated 75with the object referred to by 76.Va fd . 77The ACL in the working storage shall not participate in any access control 78decisions. 79.Sh IMPLEMENTATION NOTES 80.Dx Ns 's 81support for POSIX.1e interfaces and features is still under 82development at this time. 83.Sh RETURN VALUES 84Upon successful completion, the function shall return a pointer to the ACL 85that was retrieved. Otherwise, a value of 86.Va (acl_t)NULL 87shall be returned, and 88.Va errno 89shall be set to indicate the error. 90.Sh ERRORS 91If any of the following conditions occur, the 92.Fn acl_get_fd 93function shall return a value of 94.Va (acl_t)NULL 95and set 96.Va errno 97to the corresponding value: 98.Bl -tag -width Er 99.It Bq Er EACCES 100Search permission is denied for a component of the path prefix, or the 101object exists and the process does not have appropriate access rights. 102.It Bq Er EBADF 103The 104.Va fd 105argument is not a valid file descriptor. 106.It Bq Er EINVAL 107The ACL type passed is invalid for this file object. 108.It Bq Er ENAMETOOLONG 109A component of a pathname exceeded 255 characters, or an 110entire path name exceeded 1023 characters. 111.It Bq Er ENOENT 112The named object does not exist, or the 113.Va path_p 114argument points to an empty string. 115.It Bq Er ENOMEM 116Insufficient memory available to fulfill request. 117.It Bq Er EOPNOTSUPP 118The file system does not support ACL retrieval. 119.El 120.Sh SEE ALSO 121.Xr acl 3 , 122.Xr acl_free 3 , 123.Xr acl_get 3 , 124.Xr acl_set 3 , 125.Xr posix1e 3 126.Sh STANDARDS 127POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion 128of the draft continues on the cross-platform POSIX.1e implementation 129mailing list. To join this list, see the 130.Fx 131POSIX.1e implementation 132page for more information. 133.Sh HISTORY 134POSIX.1e support was introduced in 135.Fx 4.0 , 136and development continues. 137.Sh AUTHORS 138.An Robert N M Watson 139.Sh BUGS 140These features are not yet fully implemented. In particular, the shipped 141version of UFS/FFS does not support storage of additional security labels, 142and so is unable to (easily) provide support for most of these features. 143