#include <IOKit/IOCatalogue.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/IOKitKeys.h>
+#include <IOKit/IONVRAM.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOUserClient.h>
#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 ROUNDUP(a, b) (((a) + ((b) - 1)) & (~((b) - 1)))
+
#define IOPOLLED_COREFILE (CONFIG_KDP_INTERACTIVE_DEBUGGING)
#if defined(XNU_TARGET_OS_BRIDGE)
-
-#define kIOCoreDumpSize 150ULL*1024ULL*1024ULL
-// leave free space on volume:
-#define kIOCoreDumpFreeSize 150ULL*1024ULL*1024ULL
#define kIOCoreDumpPath "/private/var/internal/kernelcore"
-
-#else /* defined(XNU_TARGET_OS_BRIDGE) */
-#define kIOCoreDumpMinSize 350ULL*1024ULL*1024ULL
-#define kIOCoreDumpLargeSize 500ULL*1024ULL*1024ULL
-// leave free space on volume:
-#define kIOCoreDumpFreeSize 350ULL*1024ULL*1024ULL
+#elif defined(XNU_TARGET_OS_OSX)
+#define kIOCoreDumpPath "/System/Volumes/VM/kernelcore"
+#else
#define kIOCoreDumpPath "/private/var/vm/kernelcore"
+#endif
-#endif /* defined(XNU_TARGET_OS_BRIDGE) */
-
-#elif DEVELOPMENT /* CONFIG_EMBEDDED */
-#define IOPOLLED_COREFILE 1
-// no sizing
-#define kIOCoreDumpSize 0ULL
-#define kIOCoreDumpFreeSize 0ULL
-#else /* CONFIG_EMBEDDED */
-#define IOPOLLED_COREFILE 0
-#endif /* CONFIG_EMBEDDED */
-
-
-#if IOPOLLED_COREFILE
-static bool
-NewKernelCoreMedia(void * target, void * refCon,
- IOService * newService,
- IONotifier * notifier);
-#endif /* IOPOLLED_COREFILE */
+#define SYSTEM_NVRAM_PREFIX "40A0DDD2-77F8-4392-B4A3-1E7304206516:"
#if CONFIG_KDP_INTERACTIVE_DEBUGGING
/*
extern uint64_t kdp_core_ramdisk_size;
#endif
+#if IOPOLLED_COREFILE
+static void IOOpenPolledCoreFile(thread_call_param_t __unused, thread_call_param_t corefilename);
+
+thread_call_t corefile_open_call = NULL;
+#endif
+
kern_return_t
IOKitBSDInit( void )
{
IOService::publishResource("IOBSD");
+#if IOPOLLED_COREFILE
+ corefile_open_call = thread_call_allocate_with_options(IOOpenPolledCoreFile, NULL, THREAD_CALL_PRIORITY_KERNEL, THREAD_CALL_OPTIONS_ONCE);
+#endif
+
return kIOReturnSuccess;
}
boolean_t
IOServiceWaitForMatchingResource( const char * property, uint64_t timeout )
{
- OSDictionary * dict = 0;
- IOService * match = 0;
+ OSDictionary * dict = NULL;
+ IOService * match = NULL;
boolean_t found = false;
do {
boolean_t
IOCatalogueMatchingDriversPresent( const char * property )
{
- OSDictionary * dict = 0;
- OSOrderedSet * set = 0;
+ OSDictionary * dict = NULL;
+ OSOrderedSet * set = NULL;
SInt32 generationCount = 0;
boolean_t found = false;
IOBSDNameMatching( const char * name )
{
OSDictionary * dict;
- const OSSymbol * str = 0;
+ const OSSymbol * str = NULL;
do {
dict = IOService::serviceMatching( gIOServiceKey );
str->release();
}
- return 0;
+ return NULL;
}
OSDictionary *
IONetworkNamePrefixMatching( const char * prefix )
{
OSDictionary * matching;
- OSDictionary * propDict = 0;
- const OSSymbol * str = 0;
+ OSDictionary * propDict = NULL;
+ const OSSymbol * str = NULL;
char networkType[128];
do {
matching = IOService::serviceMatching( "IONetworkInterface" );
- if (matching == 0) {
+ if (matching == NULL) {
continue;
}
propDict = OSDictionary::withCapacity(1);
- if (propDict == 0) {
+ if (propDict == NULL) {
continue;
}
str = OSSymbol::withCString( prefix );
- if (str == 0) {
+ if (str == NULL) {
continue;
}
propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
str->release();
- str = 0;
+ str = NULL;
// see if we're contrained to netroot off of specific network type
if (PE_parse_boot_argn( "network-type", networkType, 128 )) {
if (str) {
propDict->setObject( "IONetworkRootType", str);
str->release();
- str = 0;
+ str = NULL;
}
}
}
propDict->release();
- propDict = 0;
+ propDict = NULL;
return matching;
} while (false);
str->release();
}
- return 0;
+ return NULL;
}
static bool
// device is handed to BSD.
IOService * stack;
- OSNumber * zero = 0;
- OSString * path = 0;
- OSDictionary * dict = 0;
- char * pathBuf = 0;
+ OSNumber * zero = NULL;
+ OSString * path = NULL;
+ OSDictionary * dict = NULL;
+ char * pathBuf = NULL;
int len;
enum { kMaxPathLen = 512 };
do {
stack = IOService::waitForService(
IOService::serviceMatching("IONetworkStack"));
- if (stack == 0) {
+ if (stack == NULL) {
break;
}
dict = OSDictionary::withCapacity(3);
- if (dict == 0) {
+ if (dict == NULL) {
break;
}
zero = OSNumber::withNumber((UInt64) 0, 32);
- if (zero == 0) {
+ if (zero == NULL) {
break;
}
pathBuf = (char *) IOMalloc( kMaxPathLen );
- if (pathBuf == 0) {
+ if (pathBuf == NULL) {
break;
}
}
path = OSString::withCStringNoCopy( pathBuf );
- if (path == 0) {
+ if (path == NULL) {
break;
}
IOFree(pathBuf, kMaxPathLen);
}
- return netif->getProperty( kIOBSDNameKey ) != 0;
+ return netif->getProperty( kIOBSDNameKey ) != NULL;
}
OSDictionary *
int len;
do {
- len = strlen( kIODeviceTreePlane ":" );
+ len = ((int) strlen( kIODeviceTreePlane ":" ));
maxLen -= len;
if (maxLen <= 0) {
continue;
strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
comp = buf + len;
- len = strlen( path );
+ len = ((int) strnlen( path, INT_MAX ));
maxLen -= len;
if (maxLen <= 0) {
continue;
matching->release();
}
- return 0;
+ return NULL;
}
static int didRam = 0;
enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
+const char*
+IOGetBootUUID(void)
+{
+ IORegistryEntry *entry;
+
+ if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
+ OSData *uuid_data = (OSData *)entry->getProperty("boot-uuid");
+ if (uuid_data) {
+ return (const char*)uuid_data->getBytesNoCopy();
+ }
+ }
+
+ return NULL;
+}
+
+const char *
+IOGetApfsPrebootUUID(void)
+{
+ IORegistryEntry *entry;
+
+ if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
+ OSData *uuid_data = (OSData *)entry->getProperty("apfs-preboot-uuid");
+ if (uuid_data) {
+ return (const char*)uuid_data->getBytesNoCopy();
+ }
+ }
+
+ return NULL;
+}
+
+const char *
+IOGetAssociatedApfsVolgroupUUID(void)
+{
+ IORegistryEntry *entry;
+
+ if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
+ OSData *uuid_data = (OSData *)entry->getProperty("associated-volume-group");
+ if (uuid_data) {
+ return (const char*)uuid_data->getBytesNoCopy();
+ }
+ }
+
+ return NULL;
+}
+
+const char *
+IOGetBootObjectsPath(void)
+{
+ IORegistryEntry *entry;
+
+ if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
+ OSData *path_prefix_data = (OSData *)entry->getProperty("boot-objects-path");
+ if (path_prefix_data) {
+ return (const char *)path_prefix_data->getBytesNoCopy();
+ }
+ }
+
+ return NULL;
+}
+
+/*
+ * Set NVRAM to boot into the right flavor of Recovery,
+ * optionally passing a UUID of a volume that failed to boot.
+ * If `reboot` is true, reboot immediately.
+ *
+ * Returns true if `mode` was understood, false otherwise.
+ * (Does not return if `reboot` is true.)
+ */
+boolean_t
+IOSetRecoveryBoot(bsd_bootfail_mode_t mode, uuid_t volume_uuid, boolean_t reboot)
+{
+ IODTNVRAM *nvram = NULL;
+ const OSSymbol *boot_command_sym = NULL;
+ OSString *boot_command_recover = NULL;
+
+ if (mode == BSD_BOOTFAIL_SEAL_BROKEN) {
+ const char *boot_mode = "ssv-seal-broken";
+ uuid_string_t volume_uuid_str;
+
+ // Set `recovery-broken-seal-uuid = <volume_uuid>`.
+ if (volume_uuid) {
+ uuid_unparse_upper(volume_uuid, volume_uuid_str);
+
+ if (!PEWriteNVRAMProperty(SYSTEM_NVRAM_PREFIX "recovery-broken-seal-uuid",
+ volume_uuid_str, sizeof(uuid_string_t))) {
+ IOLog("Failed to write recovery-broken-seal-uuid to NVRAM.\n");
+ }
+ }
+
+ // Set `recovery-boot-mode = ssv-seal-broken`.
+ if (!PEWriteNVRAMProperty(SYSTEM_NVRAM_PREFIX "recovery-boot-mode", boot_mode,
+ (const unsigned int) strlen(boot_mode))) {
+ IOLog("Failed to write recovery-boot-mode to NVRAM.\n");
+ }
+ } else if (mode == BSD_BOOTFAIL_MEDIA_MISSING) {
+ const char *boot_picker_reason = "missing-boot-media";
+
+ // Set `boot-picker-bringup-reason = missing-boot-media`.
+ if (!PEWriteNVRAMProperty(SYSTEM_NVRAM_PREFIX "boot-picker-bringup-reason",
+ boot_picker_reason, (const unsigned int) strlen(boot_picker_reason))) {
+ IOLog("Failed to write boot-picker-bringup-reason to NVRAM.\n");
+ }
+
+ // Set `boot-command = recover`.
+
+ // Construct an OSSymbol and an OSString to be the (key, value) pair
+ // we write to NVRAM. Unfortunately, since our value must be an OSString
+ // instead of an OSData, we cannot use PEWriteNVRAMProperty() here.
+ boot_command_sym = OSSymbol::withCStringNoCopy(SYSTEM_NVRAM_PREFIX "boot-command");
+ boot_command_recover = OSString::withCStringNoCopy("recover");
+ if (boot_command_sym == NULL || boot_command_recover == NULL) {
+ IOLog("Failed to create boot-command strings.\n");
+ goto do_reboot;
+ }
+
+ // Wait for NVRAM to be readable...
+ nvram = OSDynamicCast(IODTNVRAM, IOService::waitForService(
+ IOService::serviceMatching("IODTNVRAM")));
+ if (nvram == NULL) {
+ IOLog("Failed to acquire IODTNVRAM object.\n");
+ goto do_reboot;
+ }
+
+ // Wait for NVRAM to be writable...
+ if (!IOServiceWaitForMatchingResource("IONVRAM", UINT64_MAX)) {
+ IOLog("Failed to wait for IONVRAM service.\n");
+ // attempt the work anyway...
+ }
+
+ // Write the new boot-command to NVRAM, and sync if successful.
+ if (!nvram->setProperty(boot_command_sym, boot_command_recover)) {
+ IOLog("Failed to save new boot-command to NVRAM.\n");
+ } else {
+ nvram->sync();
+ }
+ } else {
+ IOLog("Unknown mode: %d\n", mode);
+ return false;
+ }
+
+ // Clean up and reboot!
+do_reboot:
+ if (nvram != NULL) {
+ nvram->release();
+ }
+
+ if (boot_command_recover != NULL) {
+ boot_command_recover->release();
+ }
+
+ if (boot_command_sym != NULL) {
+ boot_command_sym->release();
+ }
+
+ if (reboot) {
+ IOLog("\nAbout to reboot into Recovery!\n");
+ (void)PEHaltRestart(kPERestartCPU);
+ }
+
+ return true;
+}
+
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;
+ OSDictionary * matching = NULL;
OSString * iostr;
OSNumber * off;
- OSData * data = 0;
+ OSData * data = NULL;
UInt32 flags = 0;
int mnr, mjr;
- const char * mediaProperty = 0;
+ const char * mediaProperty = NULL;
char * rdBootVar;
char * str;
- const char * look = 0;
+ const char * look = NULL;
int len;
bool debugInfoPrintedOnce = false;
+ bool needNetworkKexts = false;
const char * uuidStr = NULL;
static int mountAttempts = 0;
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 */
+#if __LP64__
+#define MAX_PHYS_RAM (((uint64_t)UINT_MAX) << 12)
+ if (ramdParms[1] > MAX_PHYS_RAM) {
+ panic("ramdisk params");
+ }
+#endif /* __LP64__ */
+ (void)mdevadd(-1, ml_static_ptovirt(ramdParms[0]) >> 12, (unsigned int) (ramdParms[1] >> 12), 0); /* Initialize it and pass back the device number */
}
regEntry->release(); /* Toss the entry */
}
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[2] = (char) 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 (strncmp( look, "en", strlen( "en" )) == 0) {
matching = IONetworkNamePrefixMatching( "en" );
+ needNetworkKexts = true;
} else if (strncmp( look, "uuid", strlen( "uuid" )) == 0) {
char *uuid;
OSString *uuidString;
}
}
+ char namep[8];
+ if (needNetworkKexts
+ || PE_parse_boot_argn("-s", namep, sizeof(namep))) {
+ IOService::startDeferredMatches();
+ }
+
do {
t.tv_sec = ROOTDEVICETIMEOUT;
t.tv_nsec = 0;
matching->retain();
service = IOService::waitForService( matching, &t );
if ((!service) || (mountAttempts == 10)) {
+#if !XNU_TARGET_OS_OSX || !defined(__arm64__)
PE_display_icon( 0, "noroot");
IOLog( "Still waiting for root device\n" );
+#endif
if (!debugInfoPrintedOnce) {
debugInfoPrintedOnce = true;
IOPrintMemory();
}
}
+
+#if XNU_TARGET_OS_OSX && defined(__arm64__)
+ // The disk isn't found - have the user pick from recoveryOS+.
+ (void)IOSetRecoveryBoot(BSD_BOOTFAIL_MEDIA_MISSING, NULL, true);
+#endif
}
} while (!service);
matching->release();
if (service
&& service->metaCast( "IONetworkInterface" )
&& !IORegisterNetworkInterface( service )) {
- service = 0;
+ service = NULL;
}
if (service) {
void
IOSecureBSDRoot(const char * rootName)
{
-#if CONFIG_EMBEDDED
- int tmpInt;
+#if CONFIG_SECURE_BSD_ROOT
IOReturn result;
IOPlatformExpert *pe;
OSDictionary *matching;
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);
+ result = pe->callPlatformFunction(functionName, false, (void *)rootName, (void *)NULL, (void *)NULL, (void *)NULL);
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
+#endif // CONFIG_SECURE_BSD_ROOT
}
void *
IOService * resources;
OSString * string;
- resources = IOService::waitForService( IOService::resourceMatching( kIOPlatformUUIDKey ), (timeout.tv_sec || timeout.tv_nsec) ? &timeout : 0 );
- if (resources == 0) {
+ resources = IOService::waitForService( IOService::resourceMatching( kIOPlatformUUIDKey ), (timeout.tv_sec || timeout.tv_nsec) ? &timeout : NULL );
+ if (resources == NULL) {
return KERN_OPERATION_TIMED_OUT;
}
string = (OSString *) IOService::getPlatform()->getProvider()->getProperty( kIOPlatformUUIDKey );
- if (string == 0) {
+ if (string == NULL) {
return KERN_NOT_SUPPORTED;
}
IOPolledFileIOVars * gIOPolledCoreFileVars;
kern_return_t gIOPolledCoreFileOpenRet = kIOReturnNotReady;
+IOPolledCoreFileMode_t gIOPolledCoreFileMode = kIOPolledCoreFileModeNotInitialized;
+
#if IOPOLLED_COREFILE
-static IOReturn
-IOOpenPolledCoreFile(const char * filename)
+#if defined(XNU_TARGET_OS_BRIDGE)
+// On bridgeOS allocate a 150MB corefile and leave 150MB free
+#define kIOCoreDumpSize 150ULL*1024ULL*1024ULL
+#define kIOCoreDumpFreeSize 150ULL*1024ULL*1024ULL
+
+#elif !defined(XNU_TARGET_OS_OSX) /* defined(XNU_TARGET_OS_BRIDGE) */
+// On embedded devices with >3GB DRAM we allocate a 500MB corefile
+// otherwise allocate a 350MB corefile. Leave 350 MB free
+
+#define kIOCoreDumpMinSize 350ULL*1024ULL*1024ULL
+#define kIOCoreDumpLargeSize 500ULL*1024ULL*1024ULL
+
+#define kIOCoreDumpFreeSize 350ULL*1024ULL*1024ULL
+
+#else /* defined(XNU_TARGET_OS_BRIDGE) */
+// on macOS devices allocate a corefile sized at 1GB / 32GB of DRAM,
+// fallback to a 1GB corefile and leave at least 1GB free
+#define kIOCoreDumpMinSize 1024ULL*1024ULL*1024ULL
+#define kIOCoreDumpIncrementalSize 1024ULL*1024ULL*1024ULL
+
+#define kIOCoreDumpFreeSize 1024ULL*1024ULL*1024ULL
+
+// on older macOS devices we allocate a 1MB file at boot
+// to store a panic time stackshot
+#define kIOStackshotFileSize 1024ULL*1024ULL
+
+#endif /* defined(XNU_TARGET_OS_BRIDGE) */
+
+static IOPolledCoreFileMode_t
+GetCoreFileMode()
+{
+ if (on_device_corefile_enabled()) {
+ return kIOPolledCoreFileModeCoredump;
+ } else if (panic_stackshot_to_disk_enabled()) {
+ return kIOPolledCoreFileModeStackshot;
+ } else {
+ return kIOPolledCoreFileModeDisabled;
+ }
+}
+
+static void
+IOCoreFileGetSize(uint64_t *ideal_size, uint64_t *fallback_size, uint64_t *free_space_to_leave, IOPolledCoreFileMode_t mode)
+{
+ unsigned int requested_corefile_size = 0;
+
+ *ideal_size = *fallback_size = *free_space_to_leave = 0;
+
+#if defined(XNU_TARGET_OS_BRIDGE)
+#pragma unused(mode)
+ *ideal_size = *fallback_size = kIOCoreDumpSize;
+ *free_space_to_leave = kIOCoreDumpFreeSize;
+#elif !defined(XNU_TARGET_OS_OSX) /* defined(XNU_TARGET_OS_BRIDGE) */
+#pragma unused(mode)
+ *ideal_size = *fallback_size = kIOCoreDumpMinSize;
+
+ if (max_mem > (3 * 1024ULL * 1024ULL * 1024ULL)) {
+ *ideal_size = kIOCoreDumpLargeSize;
+ }
+
+ *free_space_to_leave = kIOCoreDumpFreeSize;
+#else /* defined(XNU_TARGET_OS_BRIDGE) */
+ if (mode == kIOPolledCoreFileModeCoredump) {
+ *ideal_size = *fallback_size = kIOCoreDumpMinSize;
+ if (kIOCoreDumpIncrementalSize != 0 && max_mem > (32 * 1024ULL * 1024ULL * 1024ULL)) {
+ *ideal_size = ((ROUNDUP(max_mem, (32 * 1024ULL * 1024ULL * 1024ULL)) / (32 * 1024ULL * 1024ULL * 1024ULL)) * kIOCoreDumpIncrementalSize);
+ }
+ *free_space_to_leave = kIOCoreDumpFreeSize;
+ } else if (mode == kIOPolledCoreFileModeStackshot) {
+ *ideal_size = *fallback_size = *free_space_to_leave = kIOStackshotFileSize;
+ }
+#endif /* defined(XNU_TARGET_OS_BRIDGE) */
+ // If a custom size was requested, override the ideal and requested sizes
+ if (PE_parse_boot_argn("corefile_size_mb", &requested_corefile_size, sizeof(requested_corefile_size))) {
+ IOLog("Boot-args specify %d MB kernel corefile\n", requested_corefile_size);
+
+ *ideal_size = *fallback_size = (requested_corefile_size * 1024ULL * 1024ULL);
+ }
+
+ return;
+}
+
+static void
+IOOpenPolledCoreFile(thread_call_param_t __unused, thread_call_param_t corefilename)
{
+ assert(corefilename != NULL);
+
IOReturn err;
- unsigned int debug;
- uint64_t corefile_size_bytes = 0;
+ char *filename = (char *) corefilename;
+ uint64_t corefile_size_bytes = 0, corefile_fallback_size_bytes = 0, free_space_to_leave_bytes = 0;
+ IOPolledCoreFileMode_t mode_to_init = GetCoreFileMode();
if (gIOPolledCoreFileVars) {
- return kIOReturnBusy;
+ return;
}
if (!IOPolledInterface::gMetaClass.getInstanceCount()) {
- return kIOReturnUnsupported;
+ return;
}
- debug = 0;
- PE_parse_boot_argn("debug", &debug, sizeof(debug));
- if (DB_DISABLE_LOCAL_CORE & debug) {
- return kIOReturnUnsupported;
+ if (mode_to_init == kIOPolledCoreFileModeDisabled) {
+ gIOPolledCoreFileMode = kIOPolledCoreFileModeDisabled;
+ return;
}
-#if CONFIG_EMBEDDED
- unsigned int requested_corefile_size = 0;
- if (PE_parse_boot_argn("corefile_size_mb", &requested_corefile_size, sizeof(requested_corefile_size))) {
- IOLog("Boot-args specify %d MB kernel corefile\n", requested_corefile_size);
-
- corefile_size_bytes = (requested_corefile_size * 1024ULL * 1024ULL);
- }
-#endif
+ // We'll overwrite this once we open the file, we update this to mark that we have made
+ // it past initialization
+ gIOPolledCoreFileMode = kIOPolledCoreFileModeClosed;
+ IOCoreFileGetSize(&corefile_size_bytes, &corefile_fallback_size_bytes, &free_space_to_leave_bytes, mode_to_init);
do {
-#if defined(kIOCoreDumpLargeSize)
- if (0 == corefile_size_bytes) {
- // If no custom size was requested and we're on a device with >3GB of DRAM, attempt
- // to allocate a large corefile otherwise use a small file.
- if (max_mem > (3 * 1024ULL * 1024ULL * 1024ULL)) {
- corefile_size_bytes = kIOCoreDumpLargeSize;
- err = IOPolledFileOpen(filename,
- kIOPolledFileCreate,
- corefile_size_bytes, kIOCoreDumpFreeSize,
- NULL, 0,
- &gIOPolledCoreFileVars, NULL, NULL, 0);
- if (kIOReturnSuccess == err) {
- break;
- } else if (kIOReturnNoSpace == err) {
- IOLog("Failed to open corefile of size %llu MB (low disk space)",
- (corefile_size_bytes / (1024ULL * 1024ULL)));
- if (corefile_size_bytes == kIOCoreDumpMinSize) {
- gIOPolledCoreFileOpenRet = err;
- return err;
- }
- // Try to open a smaller corefile (set size and fall-through)
- corefile_size_bytes = kIOCoreDumpMinSize;
- } else {
- IOLog("Failed to open corefile of size %llu MB (returned error 0x%x)\n",
- (corefile_size_bytes / (1024ULL * 1024ULL)), err);
- gIOPolledCoreFileOpenRet = err;
- return err;
- }
- } else {
- corefile_size_bytes = kIOCoreDumpMinSize;
+ err = IOPolledFileOpen(filename, kIOPolledFileCreate, corefile_size_bytes, free_space_to_leave_bytes,
+ NULL, 0, &gIOPolledCoreFileVars, NULL, NULL, NULL);
+ if (kIOReturnSuccess == err) {
+ break;
+ } else if (kIOReturnNoSpace == err) {
+ IOLog("Failed to open corefile of size %llu MB (low disk space)",
+ (corefile_size_bytes / (1024ULL * 1024ULL)));
+ if (corefile_size_bytes == corefile_fallback_size_bytes) {
+ gIOPolledCoreFileOpenRet = err;
+ return;
}
+ } else {
+ IOLog("Failed to open corefile of size %llu MB (returned error 0x%x)\n",
+ (corefile_size_bytes / (1024ULL * 1024ULL)), err);
+ gIOPolledCoreFileOpenRet = err;
+ return;
}
-#else /* defined(kIOCoreDumpLargeSize) */
- if (0 == corefile_size_bytes) {
- corefile_size_bytes = kIOCoreDumpSize;
- }
-#endif /* defined(kIOCoreDumpLargeSize) */
- err = IOPolledFileOpen(filename,
- kIOPolledFileCreate,
- corefile_size_bytes, kIOCoreDumpFreeSize,
- NULL, 0,
- &gIOPolledCoreFileVars, NULL, NULL, 0);
+
+ err = IOPolledFileOpen(filename, kIOPolledFileCreate, corefile_fallback_size_bytes, free_space_to_leave_bytes,
+ NULL, 0, &gIOPolledCoreFileVars, NULL, NULL, NULL);
if (kIOReturnSuccess != err) {
IOLog("Failed to open corefile of size %llu MB (returned error 0x%x)\n",
- (corefile_size_bytes / (1024ULL * 1024ULL)), err);
+ (corefile_fallback_size_bytes / (1024ULL * 1024ULL)), err);
gIOPolledCoreFileOpenRet = err;
- return err;
+ return;
}
} while (false);
- err = IOPolledFilePollersSetup(gIOPolledCoreFileVars, kIOPolledPreflightCoreDumpState);
- if (kIOReturnSuccess != err) {
- IOPolledFileClose(&gIOPolledCoreFileVars, NULL, NULL, 0, 0, 0);
+ gIOPolledCoreFileOpenRet = IOPolledFilePollersSetup(gIOPolledCoreFileVars, kIOPolledPreflightCoreDumpState);
+ if (kIOReturnSuccess != gIOPolledCoreFileOpenRet) {
+ IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0);
IOLog("IOPolledFilePollersSetup for corefile failed with error: 0x%x\n", err);
- gIOPolledCoreFileOpenRet = err;
} else {
IOLog("Opened corefile of size %llu MB\n", (corefile_size_bytes / (1024ULL * 1024ULL)));
+ gIOPolledCoreFileMode = mode_to_init;
}
- return err;
+ return;
}
static void
IOClosePolledCoreFile(void)
{
gIOPolledCoreFileOpenRet = kIOReturnNotOpen;
+ gIOPolledCoreFileMode = kIOPolledCoreFileModeClosed;
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;
+ IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0);
}
#endif /* IOPOLLED_COREFILE */
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;
if (0 != strncmp(path, kIOCoreDumpPath, pathLen - 1)) {
break;
}
- IOOpenPolledCoreFile(kIOCoreDumpPath);
+
+ thread_call_enter1(corefile_open_call, (void *) kIOCoreDumpPath);
break;
case kIOMountChangeUnmount:
case kIOMountChangeWillResize:
if (gIOPolledCoreFileVars && (mp == kern_file_mount(gIOPolledCoreFileVars->fileRef))) {
+ thread_call_cancel_wait(corefile_open_call);
IOClosePolledCoreFile();
}
break;
}
-#endif /* CONFIG_EMBEDDED */
#endif /* IOPOLLED_COREFILE */
}
obj->release();
return obj != kOSBooleanFalse;
}
+
+extern "C" boolean_t
+IOVnodeHasEntitlement(vnode_t vnode, int64_t off, const char *entitlement)
+{
+ OSObject * obj;
+ off_t offset = (off_t)off;
+
+ obj = IOUserClient::copyClientEntitlementVnode(vnode, offset, entitlement);
+ if (!obj) {
+ return false;
+ }
+ obj->release();
+ return obj != kOSBooleanFalse;
+}
+
+extern "C" char *
+IOVnodeGetEntitlement(vnode_t vnode, int64_t off, const char *entitlement)
+{
+ OSObject *obj = NULL;
+ OSString *str = NULL;
+ size_t len;
+ char *value = NULL;
+ off_t offset = (off_t)off;
+
+ obj = IOUserClient::copyClientEntitlementVnode(vnode, offset, entitlement);
+ if (obj != NULL) {
+ str = OSDynamicCast(OSString, obj);
+ if (str != NULL) {
+ len = str->getLength() + 1;
+ value = (char *)kheap_alloc(KHEAP_DATA_BUFFERS, len, Z_WAITOK);
+ strlcpy(value, str->getCStringNoCopy(), len);
+ }
+ obj->release();
+ }
+ return value;
+}
projects / apple / xnu.git / blobdiff