 @@ -1,150 +1,150 @@
-.\"	$NetBSD: prop_send_ioctl.3,v 1.6 2011/01/20 10:44:42 wiz Exp $
+.\"	$NetBSD: prop_send_ioctl.3,v 1.7 2011/01/20 10:45:10 wiz Exp $
 .\"
 .\" Copyright (c) 2006 The NetBSD Foundation, Inc.
 .\" All rights reserved.
 .\"
 .\" This code is derived from software contributed to The NetBSD Foundation
 .\" by Jason R. Thorpe.
 .\"
 .\" 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 NETBSD FOUNDATION, INC. 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 FOUNDATION OR CONTRIBUTORS
 .\" 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.
 .\"
 .Dd January 21, 2008
 .Dt PROP_SEND_IOCTL 3
 .Os
 .Sh NAME
 .Nm prop_array_send_ioctl ,
 .Nm prop_array_recv_ioctl ,
 .Nm prop_dictionary_send_ioctl ,
 .Nm prop_dictionary_recv_ioctl ,
 .Nm prop_dictionary_sendrecv_ioctl
 .Nd Send and receive propertly lists to and from the kernel using ioctl
 .Sh SYNOPSIS
 .In prop/proplib.h
 .Ft int
 .Fn prop_array_send_ioctl "prop_array_t array" "int fd" "unsigned long cmd"
 .Ft int
 .Fn prop_array_recv_ioctl "int fd" "unsigned long cmd" "prop_array_t *arrayp"
 .Ft int
 .Fn prop_dictionary_send_ioctl "prop_dictionary_t dict" "int fd" \
     "unsigned long cmd"
 .Ft int
 .Fn prop_dictionary_recv_ioctl "int fd" "unsigned long cmd" \
     "prop_dictionary_t *dictp"
 .Fn prop_dictionary_sendrecv_ioctl "prop_dictionary_t dict" "int fd" \
     "unsigned long cmd" "prop_dictionary_t *dictp"
 .Sh DESCRIPTION
 The
 .Nm prop_array_send_ioctl ,
 .Nm prop_array_recv_ioctl ,
 .Nm prop_dictionary_send_ioctl ,
 .Nm prop_dictionary_recv_ioctl ,
 and
 .Nm prop_dictionary_sendrecv_ioctl
 functions implement the user space side of a protocol for sending property
 lists to and from the kernel using
 .Xr ioctl 2 .
 .Sh RETURN VALUES
 If successful, functions return zero.
 Otherwise, an error number is returned to indicate the error.
 .Sh ERRORS
 .Fn prop_array_send_ioctl
 and
 .Fn prop_dictionary_send_ioctl
 will fail if:
 .Bl -tag -width Er
 .It Bq Er ENOMEM
 Cannot allocate memory
 .It Bq Er ENOTSUP
 Not supported
 .El
 .Pp
 .Fn prop_array_recv_ioctl
 and
 .Fn prop_dictionary_recv_ioctl
 will fail if:
 .Bl -tag -width Er
 .It Bq Er EIO
 Input/output error
 .It Bq Er ENOTSUP
 Not supported
 .El
 .Pp
 In addition to these,
 .Xr ioctl 2
 errors may be returned.
 .Sh EXAMPLES
 The following
 .Pq simplified
 example demonstrates using
 .Fn prop_dictionary_send_ioctl
 and
 .Fn prop_dictionary_recv_ioctl
 in an application:
 .Bd -literal
 void
 foo_setprops(prop_dictionary_t dict)
+{
     int fd;
     fd = open("/dev/foo", O_RDWR, 0640);
     if (fd == -1)
         return;
     (void) prop_dictionary_send_ioctl(dict, fd, FOOSETPROPS);
     (void) close(fd);
+}
 prop_dictionary_t
 foo_getprops(void)
+{
     prop_dictionary_t dict;
     int fd;
     fd = open("/dev/foo", O_RDONLY, 0640);
     if (fd == -1)
 	return (NULL);
     if (prop_dictionary_recv_ioctl(fd, FOOGETPROPS, \*[Am]dict) != 0)
         return (NULL);
     (void) close(fd);
     return (dict);
+}
 .Ed
 .Pp
 The
 .Nm prop_dictionary_sendrecv_ioctl
 function combines the send and receive functionality, allowing for
 ioctls that require two-way communication
 .Pq for example to specify arguments for the ioctl operation .
 .Sh ERRORS
 .Fn prop_array_send_ioctl
 and
 .Fn prop_dictionary_send_ioctl
 will fail if:
 .Bl -tag -width Er
 .It Bq Er ENOMEM
 Cannot allocate memory
 .It Bq Er ENOTSUP
 Not supported
 .El
 .Pp
 .Fn prop_array_recv_ioctl
 and
 .Fn prop_dictionary_recv_ioctl
 will fail if:
 .Bl -tag -width Er
 .It Bq Er EIO
 Input/output error
 .It Bq Er ENOTSUP
 Not supported
 .El
 .Pp
 In addition to these,
 .Xr ioctl 2
 errors may be returned.
 .Sh SEE ALSO
 .Xr prop_array 3 ,
 .Xr prop_dictionary 3 ,
 .Xr proplib 3 ,
 .Xr prop_copyin_ioctl 9
 .Sh HISTORY
 The
 .Nm proplib
 property container object library first appeared in
 .Nx 4.0 .