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--- xnu/xnu-12377.101.15/iokit/bsddev/IOKitBSDInit.cpp
+++ xnu/xnu-6153.41.3/iokit/bsddev/IOKitBSDInit.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998-2021 Apple Inc. All rights reserved.
+ * Copyright (c) 1998-2011 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
@@ -31,30 +31,16 @@
#include <IOKit/IOCatalogue.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/IOKitKeys.h>
-#include <IOKit/IONVRAM.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOUserClient.h>
-#include <libkern/c++/OSAllocation.h>
extern "C" {
-#include <libkern/amfi/amfi.h>
-#include <sys/codesign.h>
-#include <sys/code_signing.h>
-#include <vm/pmap.h>
-#include <vm/vm_map.h>
#include <pexpert/pexpert.h>
#include <kern/clock.h>
-#if CONFIG_KDP_INTERACTIVE_DEBUGGING
-#include <kern/debug.h>
-#endif
#include <mach/machine.h>
#include <uuid/uuid.h>
#include <sys/vnode_internal.h>
#include <sys/mount.h>
-#include <corecrypto/ccsha2.h>
-#include <kdp/sk_core.h>
-#include <pexpert/device_tree.h>
-#include <kern/startup.h>
// how long to wait for matching root device, secs
#if DEBUG
@@ -68,8 +54,6 @@
extern void mdevremoveall(void);
extern int mdevgetrange(int devid, uint64_t *base, uint64_t *size);
extern void di_root_ramfile(IORegistryEntry * entry);
-extern int IODTGetDefault(const char *key, void *infoAddr, unsigned int infoSize);
-extern boolean_t cpuid_vmm_present(void);
#define ROUNDUP(a, b) (((a) + ((b) - 1)) & (~((b) - 1)))
@@ -77,15 +61,9 @@
#if defined(XNU_TARGET_OS_BRIDGE)
#define kIOCoreDumpPath "/private/var/internal/kernelcore"
-#elif defined(XNU_TARGET_OS_OSX)
-#define kIOCoreDumpPath "/System/Volumes/VM/kernelcore"
#else
#define kIOCoreDumpPath "/private/var/vm/kernelcore"
#endif
-
-#define kIOCoreDumpPrebootPath "/private/preboot/kernelcore"
-
-#define SYSTEM_NVRAM_PREFIX "40A0DDD2-77F8-4392-B4A3-1E7304206516:"
#if CONFIG_KDP_INTERACTIVE_DEBUGGING
/*
@@ -93,24 +71,12 @@
*/
extern uint64_t kdp_core_ramdisk_addr;
extern uint64_t kdp_core_ramdisk_size;
-
-/*
- * A callback to indicate that the polled-mode corefile is now available.
- */
-extern kern_return_t kdp_core_polled_io_polled_file_available(IOCoreFileAccessCallback access_data, void *access_context, void *recipient_context);
-
-/*
- * A callback to indicate that the polled-mode corefile is no longer available.
- */
-extern kern_return_t kdp_core_polled_io_polled_file_unavailable(void);
#endif
#if IOPOLLED_COREFILE
static void IOOpenPolledCoreFile(thread_call_param_t __unused, thread_call_param_t corefilename);
-static void IOResolveCoreFilePath();
thread_call_t corefile_open_call = NULL;
-SECURITY_READ_ONLY_LATE(const char*) kdp_corefile_path = kIOCoreDumpPath;
#endif
kern_return_t
@@ -227,19 +193,7 @@
OSDictionary *
IOUUIDMatching( void )
{
- OSObject * obj;
- OSDictionary * result;
-
- obj = OSUnserialize(
- "{"
- "'IOProviderClass' = 'IOResources';"
- "'IOResourceMatch' = ('IOBSD', 'boot-uuid-media');"
- "}",
- NULL);
- result = OSDynamicCast(OSDictionary, obj);
- assert(result);
-
- return result;
+ return IOService::resourceMatching( "boot-uuid-media" );
}
OSDictionary *
@@ -318,7 +272,7 @@
OSNumber * zero = NULL;
OSString * path = NULL;
OSDictionary * dict = NULL;
- OSDataAllocation<char> pathBuf;
+ char * pathBuf = NULL;
int len;
enum { kMaxPathLen = 512 };
@@ -339,18 +293,18 @@
break;
}
- pathBuf = OSDataAllocation<char>( kMaxPathLen, OSAllocateMemory );
- if (!pathBuf) {
+ pathBuf = (char *) IOMalloc( kMaxPathLen );
+ if (pathBuf == NULL) {
break;
}
len = kMaxPathLen;
- if (netif->getPath( pathBuf.data(), &len, gIOServicePlane )
+ if (netif->getPath( pathBuf, &len, gIOServicePlane )
== false) {
break;
}
- path = OSString::withCStringNoCopy(pathBuf.data());
+ path = OSString::withCStringNoCopy( pathBuf );
if (path == NULL) {
break;
}
@@ -369,6 +323,9 @@
}
if (dict) {
dict->release();
+ }
+ if (pathBuf) {
+ IOFree(pathBuf, kMaxPathLen);
}
return netif->getProperty( kIOBSDNameKey ) != NULL;
@@ -383,7 +340,7 @@
int len;
do {
- len = ((int) strlen( kIODeviceTreePlane ":" ));
+ len = strlen( kIODeviceTreePlane ":" );
maxLen -= len;
if (maxLen <= 0) {
continue;
@@ -392,7 +349,7 @@
strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
comp = buf + len;
- len = ((int) strnlen( path, INT_MAX ));
+ len = strlen( path );
maxLen -= len;
if (maxLen <= 0) {
continue;
@@ -423,257 +380,6 @@
static int didRam = 0;
enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
-
-bool
-IOGetBootUUID(char *uuid)
-{
- IORegistryEntry *entry;
- OSData *uuid_data = NULL;
- bool result = false;
-
- if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
- uuid_data = (OSData *)entry->getProperty("boot-uuid");
- if (uuid_data) {
- unsigned int length = uuid_data->getLength();
- if (length <= sizeof(uuid_string_t)) {
- /* ensure caller's buffer is fully initialized: */
- bzero(uuid, sizeof(uuid_string_t));
- /* copy the content of uuid_data->getBytesNoCopy() into uuid */
- memcpy(uuid, uuid_data->getBytesNoCopy(), length);
- /* guarantee nul-termination: */
- uuid[sizeof(uuid_string_t) - 1] = '\0';
- result = true;
- } else {
- uuid = NULL;
- }
- }
- OSSafeReleaseNULL(entry);
- }
- return result;
-}
-
-bool
-IOGetApfsPrebootUUID(char *uuid)
-{
- IORegistryEntry *entry;
- OSData *uuid_data = NULL;
- bool result = false;
-
- if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
- uuid_data = (OSData *)entry->getProperty("apfs-preboot-uuid");
-
- if (uuid_data) {
- unsigned int length = uuid_data->getLength();
- if (length <= sizeof(uuid_string_t)) {
- /* ensure caller's buffer is fully initialized: */
- bzero(uuid, sizeof(uuid_string_t));
- /* copy the content of uuid_data->getBytesNoCopy() into uuid */
- memcpy(uuid, uuid_data->getBytesNoCopy(), length);
- /* guarantee nul-termination: */
- uuid[sizeof(uuid_string_t) - 1] = '\0';
- result = true;
- } else {
- uuid = NULL;
- }
- }
- OSSafeReleaseNULL(entry);
- }
- return result;
-}
-
-bool
-IOGetAssociatedApfsVolgroupUUID(char *uuid)
-{
- IORegistryEntry *entry;
- OSData *uuid_data = NULL;
- bool result = false;
-
- if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
- uuid_data = (OSData *)entry->getProperty("associated-volume-group");
-
- if (uuid_data) {
- unsigned int length = uuid_data->getLength();
-
- if (length <= sizeof(uuid_string_t)) {
- /* ensure caller's buffer is fully initialized: */
- bzero(uuid, sizeof(uuid_string_t));
- /* copy the content of uuid_data->getBytesNoCopy() into uuid */
- memcpy(uuid, uuid_data->getBytesNoCopy(), length);
- /* guarantee nul-termination: */
- uuid[sizeof(uuid_string_t) - 1] = '\0';
- result = true;
- } else {
- uuid = NULL;
- }
- }
- OSSafeReleaseNULL(entry);
- }
- return result;
-}
-
-bool
-IOGetBootObjectsPath(char *path_prefix)
-{
- IORegistryEntry *entry;
- OSData *path_prefix_data = NULL;
- bool result = false;
-
- if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
- path_prefix_data = (OSData *)entry->getProperty("boot-objects-path");
-
- if (path_prefix_data) {
- unsigned int length = path_prefix_data->getLength();
-
- if (length <= MAXPATHLEN) {
- /* ensure caller's buffer is fully initialized: */
- bzero(path_prefix, MAXPATHLEN);
- /* copy the content of path_prefix_data->getBytesNoCopy() into path_prefix */
- memcpy(path_prefix, path_prefix_data->getBytesNoCopy(), length);
- /* guarantee nul-termination: */
- path_prefix[MAXPATHLEN - 1] = '\0';
- result = true;
- } else {
- path_prefix = NULL;
- }
- }
- OSSafeReleaseNULL(entry);
- }
- return result;
-}
-
-
-bool
-IOGetBootManifestHash(char *hash_data, size_t *hash_data_size)
-{
- IORegistryEntry *entry = NULL;
- OSData *manifest_hash_data = NULL;
- bool result = false;
-
- if ((entry = IORegistryEntry::fromPath("/chosen", gIODTPlane))) {
- manifest_hash_data = (OSData *)entry->getProperty("boot-manifest-hash");
- if (manifest_hash_data) {
- unsigned int length = manifest_hash_data->getLength();
- /* hashed with SHA2-384 or SHA1, the boot manifest hash should be 48 Bytes or less */
- if ((length <= CCSHA384_OUTPUT_SIZE) && (*hash_data_size >= CCSHA384_OUTPUT_SIZE)) {
- /* ensure caller's buffer is fully initialized: */
- bzero(hash_data, CCSHA384_OUTPUT_SIZE);
- /* copy the content of manifest_hash_data->getBytesNoCopy() into hash_data */
- memcpy(hash_data, manifest_hash_data->getBytesNoCopy(), length);
- *hash_data_size = length;
- result = true;
- } else {
- hash_data = NULL;
- *hash_data_size = 0;
- }
- }
- OSSafeReleaseNULL(entry);
- }
-
- return result;
-}
-
-/*
- * 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-system`.
-
- // 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-system");
- 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 (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");
- // Mitigation for SEP hanging on kPERestartCPU (radar://164664790).
- // We panic and on the next boot we should land into recovery.
- // This should be reverted back to calling
- // PEHaltRestart(kPERestartCPU) in rdar://169561102.
- panic("Reboot into Recovery (this panic is expected)");
- // (void)PEHaltRestart(kPERestartCPU);
- }
-
- return true;
-}
kern_return_t
IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
@@ -691,10 +397,9 @@
int mnr, mjr;
const char * mediaProperty = NULL;
char * rdBootVar;
- OSDataAllocation<char> str;
+ char * str;
const char * look = NULL;
int len;
- int wdt = 0;
bool debugInfoPrintedOnce = false;
bool needNetworkKexts = false;
const char * uuidStr = NULL;
@@ -709,7 +414,7 @@
matching->setObject(gIOResourceMatchedKey, gIOBSDKey);
if ((service = IOService::waitForMatchingService(matching, 30ULL * kSecondScale))) {
- OSSafeReleaseNULL(service);
+ service->release();
} else {
IOLog("!BSD\n");
}
@@ -721,30 +426,27 @@
IOSleep( 5 * 1000 );
}
- str = OSDataAllocation<char>( kMaxPathBuf + kMaxBootVar, OSAllocateMemory );
+ str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
if (!str) {
return kIOReturnNoMemory;
}
- rdBootVar = str.data() + kMaxPathBuf;
+ rdBootVar = str + kMaxPathBuf;
if (!PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
&& !PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar )) {
rdBootVar[0] = 0;
}
- if ((regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
- do {
+ do {
+ if ((regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
di_root_ramfile(regEntry);
- OSObject* unserializedContainer = NULL;
data = OSDynamicCast(OSData, regEntry->getProperty( "root-matching" ));
if (data) {
- unserializedContainer = OSUnserializeXML((char *)data->getBytesNoCopy());
- matching = OSDynamicCast(OSDictionary, unserializedContainer);
+ matching = OSDynamicCast(OSDictionary, OSUnserializeXML((char *)data->getBytesNoCopy()));
if (matching) {
continue;
}
}
- OSSafeReleaseNULL(unserializedContainer);
data = (OSData *) regEntry->getProperty( "boot-uuid" );
if (data) {
@@ -758,14 +460,15 @@
uuidString->release();
matching = IOUUIDMatching();
mediaProperty = "boot-uuid-media";
+ regEntry->release();
continue;
} else {
uuidStr = NULL;
}
}
- } while (false);
- OSSafeReleaseNULL(regEntry);
- }
+ regEntry->release();
+ }
+ } while (false);
//
// See if we have a RAMDisk property in /chosen/memory-map. If so, make it into a device.
@@ -778,18 +481,8 @@
data = (OSData *)regEntry->getProperty("RAMDisk"); /* Find the ram disk, if there */
if (data) { /* We found one */
uintptr_t *ramdParms;
- /* BEGIN IGNORE CODESTYLE */
- __typed_allocators_ignore_push
ramdParms = (uintptr_t *)data->getBytesNoCopy(); /* Point to the ram disk base and size */
- __typed_allocators_ignore_pop
- /* END IGNORE CODESTYLE */
-#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 */
+ (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 */
}
@@ -813,12 +506,11 @@
}
}
if (xchar >= 0) { /* Do we have a valid memory device name? */
- OSSafeReleaseNULL(matching);
*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] = (char) dchar; /* 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 */
@@ -834,7 +526,7 @@
goto iofrootx; /* Join common exit... */
}
- panic("IOFindBSDRoot: specified root memory device, %s, has not been configured", rdBootVar); /* Not there */
+ panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
}
}
@@ -849,22 +541,24 @@
matching = IONetworkNamePrefixMatching( "en" );
needNetworkKexts = true;
} else if (strncmp( look, "uuid", strlen( "uuid" )) == 0) {
- OSDataAllocation<char> uuid( kMaxBootVar, OSAllocateMemory );
+ char *uuid;
+ OSString *uuidString;
+
+ uuid = (char *)IOMalloc( kMaxBootVar );
if (uuid) {
- OSString *uuidString;
-
- if (!PE_parse_boot_argn( "boot-uuid", uuid.data(), kMaxBootVar )) {
+ if (!PE_parse_boot_argn( "boot-uuid", uuid, kMaxBootVar )) {
panic( "rd=uuid but no boot-uuid=<value> specified" );
}
- uuidString = OSString::withCString(uuid.data());
+ uuidString = OSString::withCString( uuid );
if (uuidString) {
IOService::publishResource( "boot-uuid", uuidString );
uuidString->release();
- IOLog("\nWaiting for boot volume with UUID %s\n", uuid.data());
+ IOLog( "\nWaiting for boot volume with UUID %s\n", uuid );
matching = IOUUIDMatching();
mediaProperty = "boot-uuid-media";
}
+ IOFree( uuid, kMaxBootVar );
}
} else {
matching = IOBSDNameMatching( look );
@@ -876,7 +570,6 @@
// Match any HFS media
matching = IOService::serviceMatching( "IOMedia" );
- assert(matching);
astring = OSString::withCStringNoCopy("Apple_HFS");
if (astring) {
matching->setObject("Content", astring);
@@ -889,13 +582,13 @@
IOService::getPlatform()->waitQuiet();
}
- if (matching) {
+ if (true && matching) {
OSSerialize * s = OSSerialize::withCapacity( 5 );
if (matching->serialize( s )) {
IOLog( "Waiting on %s\n", s->text());
- }
- s->release();
+ s->release();
+ }
}
char namep[8];
@@ -904,17 +597,14 @@
IOService::startDeferredMatches();
}
- PE_parse_boot_argn("wdt", &wdt, sizeof(wdt));
do {
t.tv_sec = ROOTDEVICETIMEOUT;
t.tv_nsec = 0;
matching->retain();
service = IOService::waitForService( matching, &t );
- if ((-1 != wdt) && (!service || (mountAttempts == 10))) {
-#if !XNU_TARGET_OS_OSX || !defined(__arm64__)
+ if ((!service) || (mountAttempts == 10)) {
PE_display_icon( 0, "noroot");
IOLog( "Still waiting for root device\n" );
-#endif
if (!debugInfoPrintedOnce) {
debugInfoPrintedOnce = true;
@@ -930,17 +620,9 @@
IOPrintMemory();
}
}
-
-#if XNU_TARGET_OS_OSX && defined(__arm64__)
- // The disk isn't found - have the user pick from System Recovery.
- (void)IOSetRecoveryBoot(BSD_BOOTFAIL_MEDIA_MISSING, NULL, true);
-#elif XNU_TARGET_OS_IOS || XNU_TARGET_OS_XR
- panic("Failed to mount root device");
-#endif
}
} while (!service);
-
- OSSafeReleaseNULL(matching);
+ matching->release();
if (service && mediaProperty) {
service = (IOService *)service->getProperty(mediaProperty);
@@ -961,8 +643,8 @@
if (service) {
len = kMaxPathBuf;
- service->getPath( str.data(), &len, gIOServicePlane );
- IOLog("Got boot device = %s\n", str.data());
+ service->getPath( str, &len, gIOServicePlane );
+ IOLog( "Got boot device = %s\n", str );
iostr = (OSString *) service->getProperty( kIOBSDNameKey );
if (iostr) {
@@ -996,10 +678,9 @@
*root = makedev( mjr, mnr );
*oflags = flags;
+ IOFree( str, kMaxPathBuf + kMaxBootVar );
+
iofrootx:
-
- IOService::setRootMedia(service);
-
if ((gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
IOService::getPlatform()->waitQuiet();
if (gIOKitDebug & kIOLogDTree) {
@@ -1018,13 +699,6 @@
return kIOReturnSuccess;
}
-void
-IOSetImageBoot(void)
-{
- // this will unhide all IOMedia, without waiting for kernelmanagement to start
- IOService::setRootMedia(NULL);
-}
-
bool
IORamDiskBSDRoot(void)
{
@@ -1041,7 +715,7 @@
void
IOSecureBSDRoot(const char * rootName)
{
-#if CONFIG_SECURE_BSD_ROOT
+#if CONFIG_EMBEDDED
IOReturn result;
IOPlatformExpert *pe;
OSDictionary *matching;
@@ -1062,7 +736,7 @@
mdevremoveall();
}
-#endif // CONFIG_SECURE_BSD_ROOT
+#endif // CONFIG_EMBEDDED
}
void *
@@ -1122,21 +796,11 @@
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <sys/conf.h>
-#include <sys/lock.h>
#include <sys/vnode.h>
-#include <sys/vnode_if.h>
#include <sys/vnode_internal.h>
#include <sys/fcntl.h>
-#include <sys/fsctl.h>
-#include <sys/mount.h>
#include <IOKit/IOPolledInterface.h>
#include <IOKit/IOBufferMemoryDescriptor.h>
-
-// see HFSIOC_VOLUME_STATUS in APFS/HFS
-#define HFS_IOCTL_VOLUME_STATUS _IOR('h', 24, u_int32_t)
-
-LCK_GRP_DECLARE(gIOPolledCoreFileGrp, "polled_corefile");
-LCK_MTX_DECLARE(gIOPolledCoreFileMtx, &gIOPolledCoreFileGrp);
IOPolledFileIOVars * gIOPolledCoreFileVars;
kern_return_t gIOPolledCoreFileOpenRet = kIOReturnNotReady;
@@ -1144,44 +808,31 @@
#if IOPOLLED_COREFILE
-#define ONE_MB 1024ULL * 1024ULL
-
#if defined(XNU_TARGET_OS_BRIDGE)
// On bridgeOS allocate a 150MB corefile and leave 150MB free
-#define kIOCoreDumpSize 150ULL * ONE_MB
-#define kIOCoreDumpFreeSize 150ULL * ONE_MB
-
-#elif defined(XNU_TARGET_OS_OSX)
-
+#define kIOCoreDumpSize 150ULL*1024ULL*1024ULL
+#define kIOCoreDumpFreeSize 150ULL*1024ULL*1024ULL
+
+#elif CONFIG_EMBEDDED /* 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 * ONE_MB
-#define kIOCoreDumpIncrementalSize 1024ULL * ONE_MB
-
-#define kIOCoreDumpFreeSize 1024ULL * ONE_MB
+#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 ONE_MB
-
-#elif defined(XNU_TARGET_OS_XR)
-
-// XR OS requries larger corefile storage because XNU core can take
-// up to ~500MB.
-
-#define kIOCoreDumpMinSize 350ULL * ONE_MB
-#define kIOCoreDumpLargeSize 750ULL * ONE_MB
-
-#define kIOCoreDumpFreeSize 350ULL * ONE_MB
-
-#else /* 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 * ONE_MB
-#define kIOCoreDumpLargeSize 500ULL * ONE_MB
-
-#define kIOCoreDumpFreeSize 350ULL * ONE_MB
+#define kIOStackshotFileSize 1024ULL*1024ULL
#endif /* defined(XNU_TARGET_OS_BRIDGE) */
@@ -1198,75 +849,21 @@
}
static void
-IOResolveCoreFilePath()
-{
- DTEntry node;
- const char *value = NULL;
- unsigned int size = 0;
-
- if (kSuccess != SecureDTLookupEntry(NULL, "/product", &node)) {
- return;
- }
- if (kSuccess != SecureDTGetProperty(node, "kernel-core-dump-location", (void const **) &value, &size)) {
- return;
- }
- if (size == 0) {
- return;
- }
-
- // The kdp_corefile_path is allowed to be one of 2 options to working locations.
- // This value is set on EARLY_BOOT since we need to know it before any volumes are mounted. The mount
- // event triggers IOOpenPolledCoreFile() which opens the file. Once we commit to using the path from EDT
- // we can't back out since a different path may reside in a different volume.
- // In case the path from EDT can't be opened, there will not be a kernel core-dump
- if (strlcmp(value, "preboot", size) == 0) {
- kdp_corefile_path = kIOCoreDumpPrebootPath;
- } else if (strlcmp(value, "default", size) != 0) {
- IOLog("corefile path selection in device-tree is not one of the allowed values: %s, Using default %s\n", value, kdp_corefile_path);
- return;
- }
-
- IOLog("corefile path selection in device-tree was set to: %s (value: %s)\n", kdp_corefile_path, value);
-}
-STARTUP(EARLY_BOOT, STARTUP_RANK_MIDDLE, IOResolveCoreFilePath);
-
-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 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 * ONE_MB);
- return;
- }
-
- unsigned int status_flags = 0;
- int error = VNOP_IOCTL(rootvnode, HFS_IOCTL_VOLUME_STATUS, (caddr_t)&status_flags, 0,
- vfs_context_kernel());
- if (!error) {
- if (status_flags & (VQ_VERYLOWDISK | VQ_LOWDISK | VQ_NEARLOWDISK)) {
- IOLog("Volume is low on space. Not allocating kernel corefile.\n");
- return;
- }
- } else {
- IOLog("Couldn't retrieve volume status. Error %d\n", error);
- }
#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) */
+#elif CONFIG_EMBEDDED /* defined(XNU_TARGET_OS_BRIDGE) */
#pragma unused(mode)
*ideal_size = *fallback_size = kIOCoreDumpMinSize;
- if (max_mem > (3 * 1024ULL * ONE_MB)) {
+ if (max_mem > (3 * 1024ULL * 1024ULL * 1024ULL)) {
*ideal_size = kIOCoreDumpLargeSize;
}
@@ -1274,39 +871,22 @@
#else /* defined(XNU_TARGET_OS_BRIDGE) */
if (mode == kIOPolledCoreFileModeCoredump) {
*ideal_size = *fallback_size = kIOCoreDumpMinSize;
- if (kIOCoreDumpIncrementalSize != 0 && max_mem > (32 * 1024ULL * ONE_MB)) {
- *ideal_size = ((ROUNDUP(max_mem, (32 * 1024ULL * ONE_MB)) / (32 * 1024ULL * ONE_MB)) * kIOCoreDumpIncrementalSize);
+ 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 EXCLAVES_COREDUMP
- *ideal_size += sk_core_size();
-#endif /* EXCLAVES_COREDUMP */
+ // 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 IOReturn
-IOAccessCoreFileData(void *context, boolean_t write, uint64_t offset, int length, void *buffer)
-{
- errno_t vnode_error = 0;
- vfs_context_t vfs_context;
- vnode_t vnode_ptr = (vnode_t) context;
-
- vfs_context = vfs_context_kernel();
- vnode_error = vn_rdwr(write ? UIO_WRITE : UIO_READ, vnode_ptr, (caddr_t)buffer, length, offset,
- UIO_SYSSPACE, IO_SWAP_DISPATCH | IO_SYNC | IO_NOCACHE | IO_UNIT, vfs_context_ucred(vfs_context), NULL, vfs_context_proc(vfs_context));
-
- if (vnode_error) {
- IOLog("Failed to %s the corefile. Error %d\n", write ? "write to" : "read from", vnode_error);
- return kIOReturnError;
- }
-
- return kIOReturnSuccess;
}
static void
@@ -1326,10 +906,6 @@
return;
}
- if (gIOPolledCoreFileMode == kIOPolledCoreFileModeUnlinked) {
- return;
- }
-
if (mode_to_init == kIOPolledCoreFileModeDisabled) {
gIOPolledCoreFileMode = kIOPolledCoreFileModeDisabled;
return;
@@ -1341,19 +917,13 @@
IOCoreFileGetSize(&corefile_size_bytes, &corefile_fallback_size_bytes, &free_space_to_leave_bytes, mode_to_init);
- if (corefile_size_bytes == 0 && corefile_fallback_size_bytes == 0) {
- gIOPolledCoreFileMode = kIOPolledCoreFileModeUnlinked;
- return;
- }
-
do {
- // This file reference remains open long-term in case we need to write a core-dump
- err = IOPolledFileOpen(filename, kIOPolledFileCreate, 0 /*setFileSizeMin*/, corefile_size_bytes, free_space_to_leave_bytes,
+ 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)\n",
+ 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;
@@ -1366,7 +936,7 @@
return;
}
- err = IOPolledFileOpen(filename, kIOPolledFileCreate, 0 /*setFileSizeMin*/, corefile_fallback_size_bytes, free_space_to_leave_bytes,
+ 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",
@@ -1378,74 +948,23 @@
gIOPolledCoreFileOpenRet = IOPolledFilePollersSetup(gIOPolledCoreFileVars, kIOPolledPreflightCoreDumpState);
if (kIOReturnSuccess != gIOPolledCoreFileOpenRet) {
- IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0, false);
+ IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0);
IOLog("IOPolledFilePollersSetup for corefile failed with error: 0x%x\n", err);
} else {
IOLog("Opened corefile of size %llu MB\n", (corefile_size_bytes / (1024ULL * 1024ULL)));
gIOPolledCoreFileMode = mode_to_init;
}
- // Provide the "polled file available" callback with a temporary way to read from the file
- (void) IOProvideCoreFileAccess(kdp_core_polled_io_polled_file_available, NULL);
-
return;
-}
-
-kern_return_t
-IOProvideCoreFileAccess(IOCoreFileAccessRecipient recipient, void *recipient_context)
-{
- kern_return_t error = kIOReturnSuccess;
- errno_t vnode_error = 0;
- vfs_context_t vfs_context;
- vnode_t vnode_ptr;
-
- if (!recipient) {
- return kIOReturnBadArgument;
- }
-
- if (kIOReturnSuccess != gIOPolledCoreFileOpenRet) {
- return kIOReturnNotReady;
- }
-
- // Open the kernel corefile
- vfs_context = vfs_context_kernel();
- vnode_error = vnode_open(kdp_corefile_path, (FREAD | FWRITE | O_NOFOLLOW), 0600, 0, &vnode_ptr, vfs_context);
- if (vnode_error) {
- IOLog("Failed to open the corefile. Error %d\n", vnode_error);
- return kIOReturnError;
- }
-
- // Call the recipient function
- error = recipient(IOAccessCoreFileData, (void *)vnode_ptr, recipient_context);
-
- // Close the kernel corefile
- vnode_close(vnode_ptr, FREAD | FWRITE, vfs_context);
-
- return error;
}
static void
IOClosePolledCoreFile(void)
{
- // Notify kdp core that the corefile is no longer available
- (void) kdp_core_polled_io_polled_file_unavailable();
-
gIOPolledCoreFileOpenRet = kIOReturnNotOpen;
gIOPolledCoreFileMode = kIOPolledCoreFileModeClosed;
IOPolledFilePollersClose(gIOPolledCoreFileVars, kIOPolledPostflightCoreDumpState);
- IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0, false);
-}
-
-static void
-IOUnlinkPolledCoreFile(void)
-{
- // Notify kdp core that the corefile is no longer available
- (void) kdp_core_polled_io_polled_file_unavailable();
-
- gIOPolledCoreFileOpenRet = kIOReturnNotOpen;
- gIOPolledCoreFileMode = kIOPolledCoreFileModeUnlinked;
- IOPolledFilePollersClose(gIOPolledCoreFileVars, kIOPolledPostflightCoreDumpState);
- IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0, true);
+ IOPolledFileClose(&gIOPolledCoreFileVars, 0, NULL, 0, 0, 0);
}
#endif /* IOPOLLED_COREFILE */
@@ -1460,8 +979,6 @@
vnode_t vn;
int result;
- lck_mtx_lock(&gIOPolledCoreFileMtx);
-
switch (op) {
case kIOMountChangeMount:
case kIOMountChangeDidResize:
@@ -1498,12 +1015,11 @@
break;
}
#endif
- // Does this mount point include the kernel core-file?
- if (0 != strncmp(path, kdp_corefile_path, pathLen - 1)) {
- break;
- }
-
- thread_call_enter1(corefile_open_call, (void *) kdp_corefile_path);
+ if (0 != strncmp(path, kIOCoreDumpPath, pathLen - 1)) {
+ break;
+ }
+
+ thread_call_enter1(corefile_open_call, (void *) kIOCoreDumpPath);
break;
case kIOMountChangeUnmount:
@@ -1514,369 +1030,19 @@
}
break;
}
-
- lck_mtx_unlock(&gIOPolledCoreFileMtx);
#endif /* IOPOLLED_COREFILE */
}
-extern "C" void
-IOBSDLowSpaceUnlinkKernelCore(void)
-{
-#if IOPOLLED_COREFILE
- lck_mtx_lock(&gIOPolledCoreFileMtx);
- if (gIOPolledCoreFileVars) {
- thread_call_cancel_wait(corefile_open_call);
- IOUnlinkPolledCoreFile();
- }
- lck_mtx_unlock(&gIOPolledCoreFileMtx);
-#endif
-}
-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-static char*
-copyOSStringAsCString(OSString *string)
-{
- size_t string_length = 0;
- char *c_string = NULL;
-
- if (string == NULL) {
- return NULL;
- }
- string_length = string->getLength() + 1;
-
- /* Allocate kernel data memory for the string */
- c_string = (char*)kalloc_data(string_length, (zalloc_flags_t)(Z_ZERO | Z_WAITOK | Z_NOFAIL));
- assert(c_string != NULL);
-
- /* Copy in the string */
- strlcpy(c_string, string->getCStringNoCopy(), string_length);
-
- return c_string;
-}
-
-extern "C" OS_ALWAYS_INLINE boolean_t
-IOCurrentTaskHasStringEntitlement(const char *entitlement, const char *value)
-{
- return IOTaskHasStringEntitlement(NULL, entitlement, value);
-}
-
extern "C" boolean_t
-IOTaskHasStringEntitlement(task_t task, const char *entitlement, const char *value)
-{
- if (task == NULL) {
- task = current_task();
- }
-
- /* Validate input arguments */
- if (task == kernel_task || entitlement == NULL || value == NULL) {
- return false;
- }
- proc_t proc = (proc_t)get_bsdtask_info(task);
-
- if (proc == NULL) {
- return false;
- }
-
- kern_return_t ret = amfi->OSEntitlements.queryEntitlementStringWithProc(
- proc,
- entitlement,
- value);
-
- if (ret == KERN_SUCCESS) {
- return true;
- }
-
- return false;
-}
-
-extern "C" OS_ALWAYS_INLINE boolean_t
-IOCurrentTaskHasEntitlement(const char *entitlement)
-{
- return IOTaskHasEntitlement(NULL, entitlement);
-}
-
-/*
- * Reminder to reader: This only returns `true` if:
- * - The entitlement is boolean-valued
- * - The value is `true`
- * If you are looking to check whether an entitlement is present,
- * you likely want `IOVnodeIsEntitlementPresentWithAnyValue`
- * or `IOTaskHasEntitlementAsBooleanOrObject` (caveat emptor).
- */
-extern "C" boolean_t
-IOTaskHasEntitlement(task_t task, const char *entitlement)
-{
- if (task == NULL) {
- task = current_task();
- }
-
- /* Validate input arguments */
- if (task == kernel_task || entitlement == NULL) {
- return false;
- }
- proc_t proc = (proc_t)get_bsdtask_info(task);
-
- if (proc == NULL) {
- return false;
- }
-
- kern_return_t ret = amfi->OSEntitlements.queryEntitlementBooleanWithProc(
- proc,
- entitlement);
-
- if (ret == KERN_SUCCESS) {
- return true;
- }
-
- return false;
-}
-
-extern "C" boolean_t
-IOTaskGetIntegerEntitlement(task_t task, const char *entitlement, uint64_t *value)
-{
- void *entitlement_object = NULL;
-
- if (task == NULL) {
- task = current_task();
- }
-
- /* Validate input arguments */
- if (task == kernel_task || entitlement == NULL || value == NULL) {
- return false;
- }
- proc_t proc = (proc_t)get_bsdtask_info(task);
-
- if (proc == NULL) {
- return false;
- }
-
- kern_return_t ret = amfi->OSEntitlements.copyEntitlementAsOSObjectWithProc(
- proc,
- entitlement,
- &entitlement_object);
-
- if (ret != KERN_SUCCESS) {
- return false;
- }
- assert(entitlement_object != NULL);
-
- OSObject *os_object = (OSObject*)entitlement_object;
- OSNumber *os_number = OSDynamicCast(OSNumber, os_object);
-
- boolean_t has_entitlement = os_number != NULL;
- if (has_entitlement) {
- *value = os_number->unsigned64BitValue();
- }
-
- /* Free the OSObject which was given to us */
- OSSafeReleaseNULL(os_object);
-
- return has_entitlement;
-}
-
-extern "C" OS_ALWAYS_INLINE char*
-IOCurrentTaskGetEntitlement(const char *entitlement)
-{
- return IOTaskGetEntitlement(NULL, entitlement);
-}
-
-extern "C" char*
-IOTaskGetEntitlement(task_t task, const char *entitlement)
-{
- void *entitlement_object = NULL;
- char *return_value = NULL;
-
- if (task == NULL) {
- task = current_task();
- }
-
- /* Validate input arguments */
- if (task == kernel_task || entitlement == NULL) {
- return NULL;
- }
- proc_t proc = (proc_t)get_bsdtask_info(task);
-
- if (proc == NULL) {
- return NULL;
- }
-
- kern_return_t ret = amfi->OSEntitlements.copyEntitlementAsOSObjectWithProc(
- proc,
- entitlement,
- &entitlement_object);
-
- if (ret != KERN_SUCCESS) {
- return NULL;
- }
- assert(entitlement_object != NULL);
-
- OSObject *os_object = (OSObject*)entitlement_object;
- OSString *os_string = OSDynamicCast(OSString, os_object);
-
- /* Get a C string version of the OSString */
- return_value = copyOSStringAsCString(os_string);
-
- /* Free the OSObject which was given to us */
- OSSafeReleaseNULL(os_object);
-
- return return_value;
-}
-
-extern "C" boolean_t
-IOTaskHasEntitlementAsBooleanOrObject(task_t task, const char *entitlement)
-{
- if (task == NULL) {
- task = current_task();
- }
-
- /* Validate input arguments */
- if (task == kernel_task || entitlement == NULL) {
- return false;
- }
- proc_t proc = (proc_t)get_bsdtask_info(task);
-
- if (proc == NULL) {
- return false;
- }
-
- kern_return_t ret = amfi->OSEntitlements.queryEntitlementBooleanWithProc(
- proc,
- entitlement);
- if (ret == KERN_SUCCESS) {
- return true;
- }
-
- /* Check for the presence of an object */
- void *entitlement_object = NULL;
- ret = amfi->OSEntitlements.copyEntitlementAsOSObjectWithProc(
- proc,
- entitlement,
- &entitlement_object);
- if (ret != KERN_SUCCESS) {
- return false;
- }
- assert(entitlement_object != NULL);
-
- OSObject *os_object = (OSObject*)entitlement_object;
-
- bool not_false_entitlement = (os_object != kOSBooleanFalse);
-
- /* Free the OSObject which was given to us */
- OSSafeReleaseNULL(os_object);
-
- return not_false_entitlement;
-}
-
-extern "C" boolean_t
-IOVnodeHasEntitlement(vnode_t vnode, int64_t off, const char *entitlement)
+IOTaskHasEntitlement(task_t task, const char * entitlement)
{
OSObject * obj;
- off_t offset = (off_t)off;
-
- obj = IOUserClient::copyClientEntitlementVnode(vnode, offset, entitlement);
+ obj = IOUserClient::copyClientEntitlement(task, entitlement);
if (!obj) {
return false;
}
obj->release();
return obj != kOSBooleanFalse;
}
-
-extern "C" boolean_t
-IOVnodeIsEntitlementPresentWithAnyValue(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 true;
-}
-
-/*
- * Support querying an OSBoolean entitlement value,
- * while distinguishing between the following cases:
- * - the entitlement does not exist.
- * - the entitlement exists with a value of false.
- * - the entitlement exists with a value of true.
- *
- * Return value:
- * - false if the entitlement does not exist.
- * - true if the entitlement exists.
- *
- * If the return value is true, the `value` argument will
- * hold the entitlement value, which has to be Boolean.
- */
-extern "C" boolean_t
-IOVnodeGetBooleanEntitlement(
- vnode_t vnode,
- int64_t off,
- const char *entitlement,
- bool *value)
-{
- OSObject * obj;
- off_t offset = (off_t)off;
-
- obj = IOUserClient::copyClientEntitlementVnode(vnode, offset, entitlement);
- if (!obj) {
- return false;
- }
-
- if (obj == kOSBooleanTrue) {
- *value = true;
- } else if (obj == kOSBooleanFalse) {
- *value = false;
- } else {
- panic("%s: entitlement is not OSBoolean", __func__);
- }
-
- obj->release();
- return true;
-}
-
-extern boolean_t
-IOVnodeGetIntegerEntitlement(struct vnode *vnode, int64_t off, const char *entitlement, uint64_t *value)
-{
- OSObject *obj;
- boolean_t ret = false;
- off_t offset = (off_t)off;
-
- obj = IOUserClient::copyClientEntitlementVnode(vnode, offset, entitlement);
- if (!obj) {
- return ret;
- }
-
- OSNumber *num = OSDynamicCast(OSNumber, obj);
- if (num) {
- *value = num->unsigned64BitValue();
- ret = true;
- }
-
- obj->release();
- return ret;
-}
-
-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 *)kalloc_data(len, Z_WAITOK);
- strlcpy(value, str->getCStringNoCopy(), len);
- }
- obj->release();
- }
- return value;
-}