.\"-
.\" Copyright (c) 2008, 2009 Edward Tomasz Napierala
.\" All rights reserved.
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.\" $FreeBSD: head/lib/libc/posix1e/acl_get_brand_np.3 267774 2014-06-23 08:25:03Z bapt $
.\"
.Dd June 25, 2009
.Dt ACL_GET_BRAND_NP 3
.Os
.Sh NAME
.Nm acl_get_brand_np
.Nd retrieve the ACL brand from an ACL entry
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/types.h
.In sys/acl.h
.Ft int
.Fn acl_get_brand_np "acl_t acl" "int *brand_p"
.Sh DESCRIPTION
The
.Fn acl_get_brand_np
function
is a non-portable call that returns the ACL brand for the ACL
.Fa acl .
Upon successful completion, the location referred to by the argument
.Fa brand_p
will be set to the ACL brand of the ACL
.Fa acl .
.Pp
Branding is an internal mechanism intended to prevent mixing POSIX.1e
and NFSv4 entries by mistake.
It's also used by the libc to determine how to print out the ACL.
The first call to function that is specific for one particular brand - POSIX.1e
or NFSv4 - "brands" the ACL.
After that, calling function specific to another brand will result in error.
.Sh RETURN VALUES
.Rv -std acl_get_brand_np
.Sh ERRORS
The
.Fn acl_get_brand_np
function fails if:
.Bl -tag -width Er
.It Bq Er EINVAL
Argument
.Fa acl
does not point to a valid ACL.
.El
.Sh SEE ALSO
.Xr acl 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_get_brand_np
function was added in
.Fx 8.0 .
.Sh AUTHORS
The
.Fn acl_get_brand_np
function was written by
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org .