Add the following POSIX 1003.1e functions and man pages:

  o acl_calc_mask(): calculates the ACL mask entry associated with
    the given ACL.
  o acl_delete_entry(): remove a specified ACL entry from the given
    ACL.

Approved by:	rwatson

1 files changed, 98 insertions, 0 deletions

diff --git a/lib/libposix1e/acl_calc_mask.3 b/lib/libposix1e/acl_calc_mask.3
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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_CALC_MASK 3
+.Os
+.Sh NAME
+.Nm acl_calc_mask
+.Nd Calculate and set ACL mask permissions
+.Sh LIBRARY
+.Lb libposix1e
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/acl.h>
+.Ft int
+.Fn acl_calc_mask "acl_t *acl_p"
+.Sh DESCRIPTION
+.Fn acl_calc_mask
+is a POSIX.1e call that calculates and set the permissions
+associated with the ACL_MASK ACL entry of the ACL referred to by
+.Ar acl_p .
+.Pp
+The value of new permissions are the union of the permissions
+granted by the ACL_GROUP, ACL_GROUP_OBJ, ACL_USER tag types which
+match processes in the file group class contained in the ACL
+referred to by
+.Ar acl_p .
+.Pp
+If the ACL referred to by
+.Ar acl_p
+already contains an ACL_MASK entry, its permissions shall be
+overwritten; if it does not contain an ACL_MASK entry, one shall
+be added.
+.Sh RETURN VALUES
+Upon successful completion, the function shall return a value of
+.Va 0 .
+Otherwise, a value of
+.Va -1
+shall be returned, and
+.Va errno
+shall be set to indicate the error.
+.Sh ERRORS
+If the following condition occurs, the
+.Fn acl_calc_mask
+function shall return a value of
+.Va -1
+and set
+.Va errno
+to the corresponding value:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+Argument
+.Ar acl_p
+does not point to a pointer to a valid ACL.
+.El
+.Sh SEE ALSO
+.Xr acl 3 ,
+.Xr acl_get_entry 3 ,
+.Xr acl_valid 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_calc_mask
+function was added in
+.Fx 5.0 .
+.Sh AUTHORS
+The
+.Fn acl_calc_mask
+function was written by
+.An Chris D. Faulhaber Aq jedgar@fxp.org .