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/*
* Copyright (c) 1998-2011 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <IOKit/IOBSD.h>
#include <IOKit/IOLib.h>
#include <IOKit/IOService.h>
#include <IOKit/IOCatalogue.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/IOKitKeys.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOUserClient.h>
extern "C" {
#include <pexpert/pexpert.h>
#include <kern/clock.h>
#include <uuid/uuid.h>
#include <sys/vnode_internal.h>
#include <sys/mount.h>
// how long to wait for matching root device, secs
#if DEBUG
#define ROOTDEVICETIMEOUT 120
#else
#define ROOTDEVICETIMEOUT 60
#endif
int panic_on_exception_triage = 0;
extern dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys);
extern dev_t mdevlookup(int devid);
extern void mdevremoveall(void);
extern int mdevgetrange(int devid, uint64_t *base, uint64_t *size);
extern void di_root_ramfile(IORegistryEntry * entry);
#if CONFIG_EMBEDDED
#define IOPOLLED_COREFILE (CONFIG_KDP_INTERACTIVE_DEBUGGING)
#define kIOCoreDumpPath "/private/var/vm/kernelcore"
#define kIOCoreDumpSize 350ULL*1024ULL*1024ULL
// leave free space on volume:
#define kIOCoreDumpFreeSize 350ULL*1024ULL*1024ULL
#elif DEVELOPMENT
#define IOPOLLED_COREFILE 1
// no sizing
#define kIOCoreDumpSize 0ULL
#define kIOCoreDumpFreeSize 0ULL
#else
#define IOPOLLED_COREFILE 0
#endif
#if IOPOLLED_COREFILE
static bool
NewKernelCoreMedia(void * target, void * refCon,
IOService * newService,
IONotifier * notifier);
#endif /* IOPOLLED_COREFILE */
#if CONFIG_KDP_INTERACTIVE_DEBUGGING
/*
* Touched by IOFindBSDRoot() if a RAMDisk is used for the root device.
*/
extern uint64_t kdp_core_ramdisk_addr;
extern uint64_t kdp_core_ramdisk_size;
#endif
kern_return_t
IOKitBSDInit( void )
{
IOService::publishResource("IOBSD");
return( kIOReturnSuccess );
}
void
IOServicePublishResource( const char * property, boolean_t value )
{
if ( value)
IOService::publishResource( property, kOSBooleanTrue );
else
IOService::getResourceService()->removeProperty( property );
}
boolean_t
IOServiceWaitForMatchingResource( const char * property, uint64_t timeout )
{
OSDictionary * dict = 0;
IOService * match = 0;
boolean_t found = false;
do {
dict = IOService::resourceMatching( property );
if( !dict)
continue;
match = IOService::waitForMatchingService( dict, timeout );
if ( match)
found = true;
} while( false );
if( dict)
dict->release();
if( match)
match->release();
return( found );
}
boolean_t
IOCatalogueMatchingDriversPresent( const char * property )
{
OSDictionary * dict = 0;
OSOrderedSet * set = 0;
SInt32 generationCount = 0;
boolean_t found = false;
do {
dict = OSDictionary::withCapacity(1);
if( !dict)
continue;
dict->setObject( property, kOSBooleanTrue );
set = gIOCatalogue->findDrivers( dict, &generationCount );
if ( set && (set->getCount() > 0))
found = true;
} while( false );
if( dict)
dict->release();
if( set)
set->release();
return( found );
}
OSDictionary * IOBSDNameMatching( const char * name )
{
OSDictionary * dict;
const OSSymbol * str = 0;
do {
dict = IOService::serviceMatching( gIOServiceKey );
if( !dict)
continue;
str = OSSymbol::withCString( name );
if( !str)
continue;
dict->setObject( kIOBSDNameKey, (OSObject *) str );
str->release();
return( dict );
} while( false );
if( dict)
dict->release();
if( str)
str->release();
return( 0 );
}
OSDictionary * IOUUIDMatching( void )
{
return IOService::resourceMatching( "boot-uuid-media" );
}
OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
{
OSDictionary * matching;
OSDictionary * propDict = 0;
const OSSymbol * str = 0;
char networkType[128];
do {
matching = IOService::serviceMatching( "IONetworkInterface" );
if ( matching == 0 )
continue;
propDict = OSDictionary::withCapacity(1);
if ( propDict == 0 )
continue;
str = OSSymbol::withCString( prefix );
if ( str == 0 )
continue;
propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
str->release();
str = 0;
// see if we're contrained to netroot off of specific network type
if(PE_parse_boot_argn( "network-type", networkType, 128 ))
{
str = OSSymbol::withCString( networkType );
if(str)
{
propDict->setObject( "IONetworkRootType", str);
str->release();
str = 0;
}
}
if ( matching->setObject( gIOPropertyMatchKey,
(OSObject *) propDict ) != true )
continue;
propDict->release();
propDict = 0;
return( matching );
} while ( false );
if ( matching ) matching->release();
if ( propDict ) propDict->release();
if ( str ) str->release();
return( 0 );
}
static bool IORegisterNetworkInterface( IOService * netif )
{
// A network interface is typically named and registered
// with BSD after receiving a request from a user space
// "namer". However, for cases when the system needs to
// root from the network, this registration task must be
// done inside the kernel and completed before the root
// device is handed to BSD.
IOService * stack;
OSNumber * zero = 0;
OSString * path = 0;
OSDictionary * dict = 0;
char * pathBuf = 0;
int len;
enum { kMaxPathLen = 512 };
do {
stack = IOService::waitForService(
IOService::serviceMatching("IONetworkStack") );
if ( stack == 0 ) break;
dict = OSDictionary::withCapacity(3);
if ( dict == 0 ) break;
zero = OSNumber::withNumber((UInt64) 0, 32);
if ( zero == 0 ) break;
pathBuf = (char *) IOMalloc( kMaxPathLen );
if ( pathBuf == 0 ) break;
len = kMaxPathLen;
if ( netif->getPath( pathBuf, &len, gIOServicePlane )
== false ) break;
path = OSString::withCStringNoCopy( pathBuf );
if ( path == 0 ) break;
dict->setObject( "IOInterfaceUnit", zero );
dict->setObject( kIOPathMatchKey, path );
stack->setProperties( dict );
}
while ( false );
if ( zero ) zero->release();
if ( path ) path->release();
if ( dict ) dict->release();
if ( pathBuf ) IOFree(pathBuf, kMaxPathLen);
return ( netif->getProperty( kIOBSDNameKey ) != 0 );
}
OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
{
OSDictionary * matching = NULL;
OSString * str;
char * comp;
int len;
do {
len = strlen( kIODeviceTreePlane ":" );
maxLen -= len;
if( maxLen <= 0)
continue;
strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
comp = buf + len;
len = strlen( path );
maxLen -= len;
if( maxLen <= 0)
continue;
strlcpy( comp, path, len + 1 );
matching = OSDictionary::withCapacity( 1 );
if( !matching)
continue;
str = OSString::withCString( buf );
if( !str)
continue;
matching->setObject( kIOPathMatchKey, str );
str->release();
return( matching );
} while( false );
if( matching)
matching->release();
return( 0 );
}
static int didRam = 0;
enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
dev_t * root, u_int32_t * oflags )
{
mach_timespec_t t;
IOService * service;
IORegistryEntry * regEntry;
OSDictionary * matching = 0;
OSString * iostr;
OSNumber * off;
OSData * data = 0;
UInt32 flags = 0;
int mnr, mjr;
const char * mediaProperty = 0;
char * rdBootVar;
char * str;
const char * look = 0;
int len;
bool debugInfoPrintedOnce = false;
const char * uuidStr = NULL;
static int mountAttempts = 0;
int xchar, dchar;
// stall here for anyone matching on the IOBSD resource to finish (filesystems)
matching = IOService::serviceMatching(gIOResourcesKey);
assert(matching);
matching->setObject(gIOResourceMatchedKey, gIOBSDKey);
if ((service = IOService::waitForMatchingService(matching, 30ULL * kSecondScale))) {
service->release();
} else {
IOLog("!BSD\n");
}
matching->release();
matching = NULL;
if( mountAttempts++)
{
IOLog("mount(%d) failed\n", mountAttempts);
IOSleep( 5 * 1000 );
}
str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
if( !str)
return( kIOReturnNoMemory );
rdBootVar = str + kMaxPathBuf;
if (!PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
&& !PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar ))
rdBootVar[0] = 0;
do {
if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
di_root_ramfile(regEntry);
data = OSDynamicCast(OSData, regEntry->getProperty( "root-matching" ));
if (data) {
matching = OSDynamicCast(OSDictionary, OSUnserializeXML((char *)data->getBytesNoCopy()));
if (matching) {
continue;
}
}
data = (OSData *) regEntry->getProperty( "boot-uuid" );
if( data) {
uuidStr = (const char*)data->getBytesNoCopy();
OSString *uuidString = OSString::withCString( uuidStr );
// match the boot-args boot-uuid processing below
if( uuidString) {
IOLog("rooting via boot-uuid from /chosen: %s\n", uuidStr);
IOService::publishResource( "boot-uuid", uuidString );
uuidString->release();
matching = IOUUIDMatching();
mediaProperty = "boot-uuid-media";
regEntry->release();
continue;
} else {
uuidStr = NULL;
}
}
regEntry->release();
}
} while( false );
//
// See if we have a RAMDisk property in /chosen/memory-map. If so, make it into a device.
// It will become /dev/mdx, where x is 0-f.
//
if(!didRam) { /* Have we already build this ram disk? */
didRam = 1; /* Remember we did this */
if((regEntry = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane ))) { /* Find the map node */
data = (OSData *)regEntry->getProperty("RAMDisk"); /* Find the ram disk, if there */
if(data) { /* We found one */
uintptr_t *ramdParms;
ramdParms = (uintptr_t *)data->getBytesNoCopy(); /* Point to the ram disk base and size */
(void)mdevadd(-1, ml_static_ptovirt(ramdParms[0]) >> 12, ramdParms[1] >> 12, 0); /* Initialize it and pass back the device number */
}
regEntry->release(); /* Toss the entry */
}
}
//
// Now check if we are trying to root on a memory device
//
if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
dchar = xchar = rdBootVar[2]; /* Get the actual device */
if((xchar >= '0') && (xchar <= '9')) xchar = xchar - '0'; /* If digit, convert */
else {
xchar = xchar & ~' '; /* Fold to upper case */
if((xchar >= 'A') && (xchar <= 'F')) { /* Is this a valid digit? */
xchar = (xchar & 0xF) + 9; /* Convert the hex digit */
dchar = dchar | ' '; /* Fold to lower case */
}
else xchar = -1; /* Show bogus */
}
if(xchar >= 0) { /* Do we have a valid memory device name? */
*root = mdevlookup(xchar); /* Find the device number */
if(*root >= 0) { /* Did we find one? */
rootName[0] = 'm'; /* Build root name */
rootName[1] = 'd'; /* Build root name */
rootName[2] = dchar; /* Build root name */
rootName[3] = 0; /* Build root name */
IOLog("BSD root: %s, major %d, minor %d\n", rootName, major(*root), minor(*root));
*oflags = 0; /* Show that this is not network */
#if CONFIG_KDP_INTERACTIVE_DEBUGGING
/* retrieve final ramdisk range and initialize KDP variables */
if (mdevgetrange(xchar, &kdp_core_ramdisk_addr, &kdp_core_ramdisk_size) != 0) {
IOLog("Unable to retrieve range for root memory device %d\n", xchar);
kdp_core_ramdisk_addr = 0;
kdp_core_ramdisk_size = 0;
}
#endif
goto iofrootx; /* Join common exit... */
}
panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
}
}
if( (!matching) && rdBootVar[0] ) {
// by BSD name
look = rdBootVar;
if( look[0] == '*')
look++;
if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
matching = IONetworkNamePrefixMatching( "en" );
} else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
char *uuid;
OSString *uuidString;
uuid = (char *)IOMalloc( kMaxBootVar );
if ( uuid ) {
if (!PE_parse_boot_argn( "boot-uuid", uuid, kMaxBootVar )) {
panic( "rd=uuid but no boot-uuid=<value> specified" );
}
uuidString = OSString::withCString( uuid );
if ( uuidString ) {
IOService::publishResource( "boot-uuid", uuidString );
uuidString->release();
IOLog( "\nWaiting for boot volume with UUID %s\n", uuid );
matching = IOUUIDMatching();
mediaProperty = "boot-uuid-media";
}
IOFree( uuid, kMaxBootVar );
}
} else {
matching = IOBSDNameMatching( look );
}
}
if( !matching) {
OSString * astring;
// Match any HFS media
matching = IOService::serviceMatching( "IOMedia" );
astring = OSString::withCStringNoCopy("Apple_HFS");
if ( astring ) {
matching->setObject("Content", astring);
astring->release();
}
}
if( gIOKitDebug & kIOWaitQuietBeforeRoot ) {
IOLog( "Waiting for matching to complete\n" );
IOService::getPlatform()->waitQuiet();
}
if( true && matching) {
OSSerialize * s = OSSerialize::withCapacity( 5 );
if( matching->serialize( s )) {
IOLog( "Waiting on %s\n", s->text() );
s->release();
}
}
do {
t.tv_sec = ROOTDEVICETIMEOUT;
t.tv_nsec = 0;
matching->retain();
service = IOService::waitForService( matching, &t );
if( (!service) || (mountAttempts == 10)) {
PE_display_icon( 0, "noroot");
IOLog( "Still waiting for root device\n" );
if( !debugInfoPrintedOnce) {
debugInfoPrintedOnce = true;
if( gIOKitDebug & kIOLogDTree) {
IOLog("\nDT plane:\n");
IOPrintPlane( gIODTPlane );
}
if( gIOKitDebug & kIOLogServiceTree) {
IOLog("\nService plane:\n");
IOPrintPlane( gIOServicePlane );
}
if( gIOKitDebug & kIOLogMemory)
IOPrintMemory();
}
}
} while( !service);
matching->release();
if ( service && mediaProperty ) {
service = (IOService *)service->getProperty(mediaProperty);
}
mjr = 0;
mnr = 0;
// If the IOService we matched to is a subclass of IONetworkInterface,
// then make sure it has been registered with BSD and has a BSD name
// assigned.
if ( service
&& service->metaCast( "IONetworkInterface" )
&& !IORegisterNetworkInterface( service ) )
{
service = 0;
}
if( service) {
len = kMaxPathBuf;
service->getPath( str, &len, gIOServicePlane );
IOLog( "Got boot device = %s\n", str );
iostr = (OSString *) service->getProperty( kIOBSDNameKey );
if( iostr)
strlcpy( rootName, iostr->getCStringNoCopy(), rootNameSize );
off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
if( off)
mjr = off->unsigned32BitValue();
off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
if( off)
mnr = off->unsigned32BitValue();
if( service->metaCast( "IONetworkInterface" ))
flags |= 1;
} else {
IOLog( "Wait for root failed\n" );
strlcpy( rootName, "en0", rootNameSize );
flags |= 1;
}
IOLog( "BSD root: %s", rootName );
if( mjr)
IOLog(", major %d, minor %d\n", mjr, mnr );
else
IOLog("\n");
*root = makedev( mjr, mnr );
*oflags = flags;
IOFree( str, kMaxPathBuf + kMaxBootVar );
iofrootx:
if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
IOService::getPlatform()->waitQuiet();
if( gIOKitDebug & kIOLogDTree) {
IOLog("\nDT plane:\n");
IOPrintPlane( gIODTPlane );
}
if( gIOKitDebug & kIOLogServiceTree) {
IOLog("\nService plane:\n");
IOPrintPlane( gIOServicePlane );
}
if( gIOKitDebug & kIOLogMemory)
IOPrintMemory();
}
return( kIOReturnSuccess );
}
bool IORamDiskBSDRoot(void)
{
char rdBootVar[kMaxBootVar];
if (PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
|| PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar )) {
if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
return true;
}
}
return false;
}
void IOSecureBSDRoot(const char * rootName)
{
#if CONFIG_EMBEDDED
int tmpInt;
IOReturn result;
IOPlatformExpert *pe;
OSDictionary *matching;
const OSSymbol *functionName = OSSymbol::withCStringNoCopy("SecureRootName");
matching = IOService::serviceMatching("IOPlatformExpert");
assert(matching);
pe = (IOPlatformExpert *) IOService::waitForMatchingService(matching, 30ULL * kSecondScale);
matching->release();
assert(pe);
// Returns kIOReturnNotPrivileged is the root device is not secure.
// Returns kIOReturnUnsupported if "SecureRootName" is not implemented.
result = pe->callPlatformFunction(functionName, false, (void *)rootName, (void *)0, (void *)0, (void *)0);
functionName->release();
OSSafeReleaseNULL(pe);
if (result == kIOReturnNotPrivileged) {
mdevremoveall();
} else if (result == kIOReturnSuccess) {
// If we are booting with a secure root, and we have the right
// boot-arg, we will want to panic on exception triage. This
// behavior is intended as a debug aid (we can look at why an
// exception occured in the kernel debugger).
if (PE_parse_boot_argn("-panic_on_exception_triage", &tmpInt, sizeof(tmpInt))) {
panic_on_exception_triage = 1;
}
}
#endif // CONFIG_EMBEDDED
}
void *
IOBSDRegistryEntryForDeviceTree(char * path)
{
return (IORegistryEntry::fromPath(path, gIODTPlane));
}
void
IOBSDRegistryEntryRelease(void * entry)
{
IORegistryEntry * regEntry = (IORegistryEntry *)entry;
if (regEntry)
regEntry->release();
return;
}
const void *
IOBSDRegistryEntryGetData(void * entry, char * property_name,
int * packet_length)
{
OSData * data;
IORegistryEntry * regEntry = (IORegistryEntry *)entry;
data = (OSData *) regEntry->getProperty(property_name);
if (data) {
*packet_length = data->getLength();
return (data->getBytesNoCopy());
}
return (NULL);
}
kern_return_t IOBSDGetPlatformUUID( uuid_t uuid, mach_timespec_t timeout )
{
IOService * resources;
OSString * string;
resources = IOService::waitForService( IOService::resourceMatching( kIOPlatformUUIDKey ), ( timeout.tv_sec || timeout.tv_nsec ) ? &timeout : 0 );
if ( resources == 0 ) return KERN_OPERATION_TIMED_OUT;
string = ( OSString * ) IOService::getPlatform( )->getProvider( )->getProperty( kIOPlatformUUIDKey );
if ( string == 0 ) return KERN_NOT_SUPPORTED;
uuid_parse( string->getCStringNoCopy( ), uuid );
return KERN_SUCCESS;
}
} /* extern "C" */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <sys/conf.h>
#include <sys/vnode.h>
#include <sys/vnode_internal.h>
#include <sys/fcntl.h>
#include <IOKit/IOPolledInterface.h>
#include <IOKit/IOBufferMemoryDescriptor.h>
IOPolledFileIOVars * gIOPolledCoreFileVars;
#if IOPOLLED_COREFILE
static IOReturn
IOOpenPolledCoreFile(const char * filename)
{
IOReturn err;
unsigned int debug;
if (gIOPolledCoreFileVars) return (kIOReturnBusy);
if (!IOPolledInterface::gMetaClass.getInstanceCount()) return (kIOReturnUnsupported);
debug = 0;
PE_parse_boot_argn("debug", &debug, sizeof (debug));
if (DB_DISABLE_LOCAL_CORE & debug) return (kIOReturnUnsupported);
err = IOPolledFileOpen(filename, kIOCoreDumpSize, kIOCoreDumpFreeSize,
NULL, 0,
&gIOPolledCoreFileVars, NULL, NULL, 0);
if (kIOReturnSuccess != err) return (err);
err = IOPolledFilePollersSetup(gIOPolledCoreFileVars, kIOPolledPreflightCoreDumpState);
if (kIOReturnSuccess != err)
{
IOPolledFileClose(&gIOPolledCoreFileVars, NULL, NULL, 0, 0, 0);
}
return (err);
}
static void
IOClosePolledCoreFile(void)
{
IOPolledFilePollersClose(gIOPolledCoreFileVars, kIOPolledPostflightCoreDumpState);
IOPolledFileClose(&gIOPolledCoreFileVars, NULL, NULL, 0, 0, 0);
}
static thread_call_t gIOOpenPolledCoreFileTC;
static IONotifier * gIOPolledCoreFileNotifier;
static IONotifier * gIOPolledCoreFileInterestNotifier;
static IOReturn
KernelCoreMediaInterest(void * target, void * refCon,
UInt32 messageType, IOService * provider,
void * messageArgument, vm_size_t argSize )
{
if (kIOMessageServiceIsTerminated == messageType)
{
gIOPolledCoreFileInterestNotifier->remove();
gIOPolledCoreFileInterestNotifier = 0;
IOClosePolledCoreFile();
}
return (kIOReturnSuccess);
}
static void
OpenKernelCoreMedia(thread_call_param_t p0, thread_call_param_t p1)
{
IOService * newService;
OSString * string;
char filename[16];
newService = (IOService *) p1;
do
{
if (gIOPolledCoreFileVars) break;
string = OSDynamicCast(OSString, newService->getProperty(kIOBSDNameKey));
if (!string) break;
snprintf(filename, sizeof(filename), "/dev/%s", string->getCStringNoCopy());
if (kIOReturnSuccess != IOOpenPolledCoreFile(filename)) break;
gIOPolledCoreFileInterestNotifier = newService->registerInterest(
gIOGeneralInterest, &KernelCoreMediaInterest, NULL, 0);
}
while (false);
newService->release();
}
static bool
NewKernelCoreMedia(void * target, void * refCon,
IOService * newService,
IONotifier * notifier)
{
static volatile UInt32 onlyOneCorePartition = 0;
do
{
if (!OSCompareAndSwap(0, 1, &onlyOneCorePartition)) break;
if (gIOPolledCoreFileVars) break;
if (!gIOOpenPolledCoreFileTC) break;
newService = newService->getProvider();
if (!newService) break;
newService->retain();
thread_call_enter1(gIOOpenPolledCoreFileTC, newService);
}
while (false);
return (false);
}
#endif /* IOPOLLED_COREFILE */
extern "C" void
IOBSDMountChange(struct mount * mp, uint32_t op)
{
#if IOPOLLED_COREFILE
OSDictionary * bsdMatching;
OSDictionary * mediaMatching;
OSString * string;
if (!gIOPolledCoreFileNotifier) do
{
if (!gIOOpenPolledCoreFileTC) gIOOpenPolledCoreFileTC = thread_call_allocate(&OpenKernelCoreMedia, NULL);
bsdMatching = IOService::serviceMatching("IOMediaBSDClient");
if (!bsdMatching) break;
mediaMatching = IOService::serviceMatching("IOMedia");
string = OSString::withCStringNoCopy("5361644D-6163-11AA-AA11-00306543ECAC");
if (!string || !mediaMatching) break;
mediaMatching->setObject("Content", string);
string->release();
bsdMatching->setObject(gIOParentMatchKey, mediaMatching);
mediaMatching->release();
gIOPolledCoreFileNotifier = IOService::addMatchingNotification(
gIOFirstMatchNotification, bsdMatching,
&NewKernelCoreMedia, NULL, NULL, -1000);
}
while (false);
#if CONFIG_EMBEDDED
uint64_t flags;
char path[128];
int pathLen;
vnode_t vn;
int result;
switch (op)
{
case kIOMountChangeMount:
case kIOMountChangeDidResize:
if (gIOPolledCoreFileVars) break;
flags = vfs_flags(mp);
if (MNT_RDONLY & flags) break;
if (!(MNT_LOCAL & flags)) break;
vn = vfs_vnodecovered(mp);
if (!vn) break;
pathLen = sizeof(path);
result = vn_getpath(vn, &path[0], &pathLen);
vnode_put(vn);
if (0 != result) break;
if (!pathLen) break;
if (0 != bcmp(path, kIOCoreDumpPath, pathLen - 1)) break;
IOOpenPolledCoreFile(kIOCoreDumpPath);
break;
case kIOMountChangeUnmount:
case kIOMountChangeWillResize:
if (gIOPolledCoreFileVars && (mp == kern_file_mount(gIOPolledCoreFileVars->fileRef)))
{
IOClosePolledCoreFile();
}
break;
}
#endif /* CONFIG_EMBEDDED */
#endif /* IOPOLLED_COREFILE */
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
extern "C" boolean_t
IOTaskHasEntitlement(task_t task, const char * entitlement)
{
OSObject * obj;
obj = IOUserClient::copyClientEntitlement(task, entitlement);
if (!obj) return (false);
obj->release();
return (obj != kOSBooleanFalse);
}
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