1/*
2 * Copyright (c) 2001-2007 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23/*
24 *  BLGetIOServiceForDeviceName.c
25 *  bless
26 *
27 *  Created by Shantonu Sen on 2/7/05.
28 *  Copyright 2005-2007 Apple Inc. All Rights Reserved.
29 *
30 *  $Id: BLGetIOServiceForDeviceName.c,v 1.4 2006/02/20 22:49:56 ssen Exp $
31 *
32 */
33
34#include <stdlib.h>
35#include <unistd.h>
36#include <sys/stat.h>
37#include <sys/param.h>
38#include <sys/mount.h>
39
40#import <mach/mach_error.h>
41
42#import <IOKit/IOKitLib.h>
43#import <IOKit/IOBSD.h>
44
45#include <CoreFoundation/CoreFoundation.h>
46
47#include "bless.h"
48#include "bless_private.h"
49
50int BLGetIOServiceForDeviceName(BLContextPtr context, const char * devName,
51								io_service_t *service)
52{
53    io_service_t			myservice;
54    io_iterator_t			services;
55    kern_return_t			kret;
56	mach_port_t				ourIOKitPort;
57
58	*service = 0;
59
60	// Obtain the I/O Kit communication handle.
61    if((kret = IOMasterPort(bootstrap_port, &ourIOKitPort)) != KERN_SUCCESS) {
62		return 1;
63    }
64
65
66    kret = IOServiceGetMatchingServices(ourIOKitPort,
67										IOBSDNameMatching(ourIOKitPort,
68														  0,
69														  devName),
70										&services);
71    if (kret != KERN_SUCCESS) {
72        return 2;
73    }
74
75    // Should only be one IOKit object for this volume. (And we only want one.)
76    myservice = IOIteratorNext(services);
77    if (!myservice) {
78        IOObjectRelease(services);
79        return 4;
80    }
81
82    IOObjectRelease(services);
83
84	*service = myservice;
85
86    return 0;
87}
88