1.\"- 2.\" Copyright (c) 2021 Gleb Popov 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.Dd January 20, 2021 27.Dt ACL_EQUIV_MODE_NP 3 28.Os 29.Sh NAME 30.Nm acl_equiv_mode_np 31.Nd check if ACL can be represented as UNIX permissions 32.Sh LIBRARY 33.Lb libc 34.Sh SYNOPSIS 35.In sys/types.h 36.In sys/acl.h 37.Ft int 38.Fn acl_equiv_mode_np "acl_t acl" "mode_t* mode_p" 39.Sh DESCRIPTION 40The 41.Fn acl_equiv_mode_np 42function is a non-portable call which checks that entries contained in the 43.Va acl 44argument use only the ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER tag types, and that 45permissions contained in these entries consist only of ACL_READ, ACL_WRITE and 46ACL_EXECUTE. 47If the check succeeds, the ACL can be represented as traditional UNIX 48file permissions bits set. 49.Pp 50If 51.Va mode_p 52is not NULL and the check succeeds, the function fills the argument with a mode 53value corresponding to permissions contained in the ACL. 54.Sh RETURN VALUES 55Upon successful completion, the function returns 0 if the ACL can be represented 56as UNIX permissions and 1 if it is not possible. 57Otherwise, a value 58of 59.Va -1 60is returned, and 61.Va errno 62is set to indicate the error. 63.Sh ERRORS 64If any of the following conditions occur, the 65.Fn acl_equiv_mode_np 66function returns a value of 67.Va -1 68and set 69.Va errno 70to the corresponding value: 71.Bl -tag -width Er 72.It Bq Er EINVAL 73Argument 74.Fa acl 75does not point to a valid ACL. 76.El 77.Sh SEE ALSO 78.Xr acl 3 , 79.Xr acl_from_mode_np 3 , 80.Xr posix1e 3 81.Sh STANDARDS 82POSIX.1e is described in IEEE POSIX.1e draft 17. 83Discussion 84of the draft continues on the cross-platform POSIX.1e implementation 85mailing list. 86To join this list, see the 87.Fx 88POSIX.1e implementation 89page for more information. 90.Sh HISTORY 91POSIX.1e support was introduced in 92.Fx 4.0 , 93and development continues. 94.Sh AUTHORS 95.An Gleb Popov 96