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.\"-
.\" Copyright (c) 2001 Chris D. Faulhaber
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE
.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd March 10, 2001
.Dt ACL_ADD_PERM 3
.Os
.Sh NAME
.Nm acl_add_perm
.Nd add permissions to a permission set
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/types.h
.In sys/acl.h
.Ft int
.Fn acl_add_perm "acl_permset_t permset_d" "acl_perm_t perm"
.Sh DESCRIPTION
The
.Fn acl_add_perm
function
is a POSIX.1e call that adds the permission contained in
.Fa perm
to the permission set
.Fa permset_d .
.Pp
Note: it is not considered an error to attempt to add permissions
that already exist in the permission set.
.Sh RETURN VALUES
.Rv -std acl_add_perm
.Sh ERRORS
The
.Fn acl_add_perm
function fails if:
.Bl -tag -width Er
.It Bq Er EINVAL
Argument
.Fa permset_d
is not a valid descriptor for a permission set within an ACL entry.
Argument
.Fa perm
does not contain a valid
.Vt acl_perm_t
value.
.El
.Sh SEE ALSO
.Xr acl 3 ,
.Xr acl_clear_perms 3 ,
.Xr acl_delete_perm 3 ,
.Xr acl_get_permset 3 ,
.Xr acl_set_permset 3 ,
.Xr posix1e 3
.Sh STANDARDS
POSIX.1e is described in IEEE POSIX.1e draft 17.
.Sh HISTORY
POSIX.1e support was introduced in
.Fx 4.0 .
The
.Fn acl_add_perm
function was added in
.Fx 5.0 .
.Sh AUTHORS
The
.Fn acl_add_perm
function was written by
.An Chris D. Faulhaber Aq jedgar@fxp.org .
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