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Commit	Line	Data
	1	/*
	2	* DINetBootHook.c
	3	* DiskImages
	4	*
	5	* Created by Byron Han on Sat Apr 13 2002.
	6	* Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
	7	*
	8	* Revision History
	9	*
	10	* $Log: DINetBootHook.cpp,v $
	11	* Revision 1.3 2002/06/16 20:36:02 lindak
	12	* Merged PR-2957314 into Jaguar (siegmund: netboot kernel code needs to set
	13	* com.apple.AppleDiskImageController.load to boolean Yes)
	14	*
	15	* Revision 1.2.40.2 2002/06/15 03:50:38 dieter
	16	* - corrected com.apple.AppleDiskImageController.load string
	17	*
	18	* Revision 1.2.40.1 2002/06/15 03:01:08 dieter
	19	* Bug #: 2957314
	20	* - add call to force IOHDIXController to get loaded/matched
	21	*
	22	* Revision 1.2 2002/05/03 18:08:39 lindak
	23	* Merged PR-2909558 into Jaguar (siegmund POST WWDC: add support for NetBoot
	24	* over IOHDIXController)
	25	*
	26	* Revision 1.1.2.1 2002/04/24 22:29:12 dieter
	27	* Bug #: 2909558
	28	* - added IOHDIXController netboot stubs
	29	*
	30	* Revision 1.3 2002/04/16 00:41:37 han
	31	* migrated code out of here to IOHDIXController's setProperty method
	32	*
	33	* Revision 1.2 2002/04/14 23:53:53 han
	34	* eliminate qDEBUG=1, use emums instead of hard coded string constants
	35	*
	36	* Revision 1.1 2002/04/14 22:54:42 han
	37	* Renamed from DINetBookHook.c.
	38	* First stab at implementing this code.
	39	*
	40	* Revision 1.1 2002/04/13 19:22:28 han
	41	* added stub file DINetBookHook.c
	42	*
	43	*
	44	*/
	45	#ifndef qDEBUG
	46	#define qDEBUG 0
	47	#endif
	48
	49	#if qDEBUG
	50	#warning qDEBUG is 1!
	51	#endif
	52
	53	#include <sys/types.h>
	54	#include <IOKit/IOService.h>
	55	#include <IOKit/IOLib.h>
	56
	57	#define kIOHDIXControllerClassName "IOHDIXController"
	58	#define kDIRootImageKey "di-root-image"
	59	#define kDIRootImageResultKey "di-root-image-result"
	60	#define kDIRootImageDevNameKey "di-root-image-devname"
	61	#define kDIRootImageDevTKey "di-root-image-devt"
	62
	63	extern "C" {
	64	/*
	65	Name: di_root_image
	66	Function: mount the disk image returning the dev node
	67	Parameters: path -> path/url to disk image
	68	devname <- dev node used to set the rootdevice global variable
	69	dev_p <- device number generated from major/minor numbers
	70	Comments:
	71	*/
	72	int di_root_image(const char path, char devname[], dev_t dev_p)
	73	{
	74	IOReturn res = 0;
	75	OSIterator * controllerIterator = 0;
	76	OSDictionary * matchDictionary = 0;
	77	IOService * controller = 0;
	78	OSString * pathString = 0;
	79	OSNumber * myResult = 0;
	80	OSString * myDevName = 0;
	81	OSNumber * myDevT = 0;
	82
	83	// sanity check arguments please
	84	if (devname) *devname = 0;
	85	if (dev_p) *dev_p = 0;
	86
	87	if (!path) return kIOReturnBadArgument;
	88	if (!devname) return kIOReturnBadArgument;
	89	if (!dev_p) return kIOReturnBadArgument;
	90
	91	(void)IOService::getResourceService()->publishResource("com.apple.AppleDiskImageController.load", kOSBooleanTrue);
	92	IOService::getResourceService()->waitQuiet();
	93
	94	// first find IOHDIXController
	95	matchDictionary = IOService::serviceMatching(kIOHDIXControllerClassName);
	96	if (!matchDictionary) {
	97	res = kIOReturnNoMemory;
	98	goto serviceMatching_FAILED;
	99	}
	100
	101	controllerIterator = IOService::getMatchingServices(matchDictionary);
	102	if (!controllerIterator) {
	103	res = kIOReturnNoMemory;
	104	goto getMatchingServices_FAILED;
	105	}
	106
	107	// use the "setProperty" method of IOHDIXController to trigger the desired behaviour
	108	controller = OSDynamicCast(IOService, controllerIterator->getNextObject());
	109	if (!controller) {
	110	res = kIOReturnNotFound;
	111	goto NoIOHDIXController;
	112	}
	113
	114	// okay create path object
	115	pathString = OSString::withCString(path);
	116	if (!pathString) {
	117	res = kIOReturnNoMemory;
	118	goto CannotCreatePathOSString;
	119	}
	120
	121	// do it
	122	if (!controller->setProperty(kDIRootImageKey, pathString))
	123	IOLog("IOHDIXController::setProperty(%s, %s) failed.\n", kDIRootImageKey, pathString->getCStringNoCopy());
	124
	125	myResult = OSDynamicCast(OSNumber, controller->getProperty(kDIRootImageResultKey));
	126	res = kIOReturnError;
	127	if (myResult)
	128	res = myResult->unsigned32BitValue();
	129
	130	if (res) {
	131	IOLog("%s is 0x%08X/%d\n", kDIRootImageResultKey, res, res);
	132	goto di_root_image_FAILED;
	133	}
	134
	135	// success - grab
	136	myDevT = OSDynamicCast(OSNumber, controller->getProperty(kDIRootImageDevTKey));
	137	if (myDevT)
	138	*dev_p = myDevT->unsigned32BitValue();
	139	else {
	140	IOLog("could not get %s\n", kDIRootImageDevTKey);
	141	res = kIOReturnError;
	142	goto di_root_image_FAILED;
	143	}
	144
	145	myDevName = OSDynamicCast(OSString, controller->getProperty(kDIRootImageDevNameKey));
	146	if (myDevName)
	147	strcpy(devname, myDevName->getCStringNoCopy());
	148	else {
	149	IOLog("could not get %s\n", kDIRootImageDevNameKey);
	150	res = kIOReturnError;
	151	goto di_root_image_FAILED;
	152	}
	153
	154
	155	di_root_image_FAILED:
	156	CannotCreatePathOSString:
	157	serviceMatching_FAILED:
	158	NoIOHDIXController:
	159	getMatchingServices_FAILED:
	160
	161	// clean up memory allocations
	162	if (pathString) pathString->release();
	163	if (matchDictionary) matchDictionary->release();
	164	if (controllerIterator) controllerIterator->release();
	165
	166	return res;
	167	}
	168
	169	};