#include <mach/kmod.h>
#include <libsa/mkext.h>
#include <libsa/vers_rsrc.h>
+#include <mach-o/loader.h>
};
#include <IOKit/IOLib.h>
host_info_t info,
mach_msg_type_number_t *count);
extern int check_cpu_subtype(cpu_subtype_t cpu_subtype);
+extern struct section *
+getsectbyname(
+ char *segname,
+ char *sectname);
+extern struct segment_command *
+getsegbyname(char *seg_name);
};
-
#define LOG_DELAY()
+#if 0
#define VTYELLOW "\033[33m"
#define VTRESET "\033[0m"
-
+#else
+#define VTYELLOW ""
+#define VTRESET ""
+#endif
/*********************************************************************
*********************************************************************/
static OSDictionary * gStartupExtensions = 0;
static OSArray * gBootLoaderObjects = 0;
+extern OSArray * gIOPrelinkedModules;
OSDictionary * getStartupExtensions(void) {
if (gStartupExtensions) {
return gStartupExtensions;
}
gStartupExtensions = OSDictionary::withCapacity(1);
- if (!gStartupExtensions) {
- IOLog("Error: Couldn't allocate "
- "startup extensions dictionary.\n");
- LOG_DELAY();
- }
+ assert (gStartupExtensions);
+
return gStartupExtensions;
}
return gBootLoaderObjects;
}
gBootLoaderObjects = OSArray::withCapacity(1);
- if (! gBootLoaderObjects) {
- IOLog("Error: Couldn't allocate "
- "bootstrap objects array.\n");
- LOG_DELAY();
- }
+ assert (gBootLoaderObjects);
+
return gBootLoaderObjects;
}
-
/*********************************************************************
* This function checks that a driver dict has all the required
* entries and does a little bit of value checking too.
+*
+* index is nonnegative if the index of an entry from an mkext
+* archive.
*********************************************************************/
-bool validateExtensionDict(OSDictionary * extension) {
+bool validateExtensionDict(OSDictionary * extension, int index) {
bool result = true;
- OSString * name; // do not release
- OSString * stringValue; // do not release
- UInt32 vers;
+ bool not_a_dict = false;
+ bool id_missing = false;
+ bool is_kernel_resource = false;
+ bool has_executable = false;
+ OSString * bundleIdentifier = NULL; // do not release
+ OSObject * rawValue = NULL; // do not release
+ OSString * stringValue = NULL; // do not release
+ OSBoolean * booleanValue = NULL; // do not release
+ OSDictionary * personalities = NULL; // do not release
+ OSDictionary * libraries = NULL; // do not release
+ OSCollectionIterator * keyIterator = NULL; // must release
+ OSString * key = NULL; // do not release
+ VERS_version vers;
+ VERS_version compatible_vers;
- name = OSDynamicCast(OSString,
+ // Info dict is a dictionary
+ if (!OSDynamicCast(OSDictionary, extension)) {
+ not_a_dict = true;
+ result = false;
+ goto finish;
+ }
+
+ // CFBundleIdentifier is a string - REQUIRED
+ bundleIdentifier = OSDynamicCast(OSString,
extension->getObject("CFBundleIdentifier"));
- if (!name) {
- IOLog(VTYELLOW "Extension has no \"CFBundleIdentifier\" property.\n"
- VTRESET);
- LOG_DELAY();
+ if (!bundleIdentifier) {
+ id_missing = true;
+ result = false;
+ goto finish;
+ }
+
+ // Length of CFBundleIdentifier is not >= KMOD_MAX_NAME
+ if (bundleIdentifier->getLength() >= KMOD_MAX_NAME) {
+ result = false;
+ goto finish;
+ }
+
+ // CFBundlePackageType is "KEXT" - REQUIRED
+ stringValue = OSDynamicCast(OSString,
+ extension->getObject("CFBundlePackageType"));
+ if (!stringValue) {
+ result = false;
+ goto finish;
+ }
+ if (!stringValue->isEqualTo("KEXT")) {
result = false;
goto finish;
}
+ // CFBundleVersion is a string - REQUIRED
stringValue = OSDynamicCast(OSString,
extension->getObject("CFBundleVersion"));
if (!stringValue) {
- IOLog(VTYELLOW "Extension \"%s\" has no \"CFBundleVersion\" "
- "property.\n" VTRESET,
- name->getCStringNoCopy());
- LOG_DELAY();
result = false;
goto finish;
}
- if (!VERS_parse_string(stringValue->getCStringNoCopy(),
- &vers)) {
- IOLog(VTYELLOW "Extension \"%s\" has an invalid "
- "\"CFBundleVersion\" property.\n" VTRESET,
- name->getCStringNoCopy());
- LOG_DELAY();
+ // CFBundleVersion is of valid form
+ vers = VERS_parse_string(stringValue->getCStringNoCopy());
+ if (vers < 0) {
+ result = false;
+ goto finish;
+ }
+
+ // OSBundleCompatibleVersion is a string - OPTIONAL
+ rawValue = extension->getObject("OSBundleCompatibleVersion");
+ if (rawValue) {
+ stringValue = OSDynamicCast(OSString, rawValue);
+ if (!stringValue) {
+ result = false;
+ goto finish;
+ }
+
+ // OSBundleCompatibleVersion is of valid form
+ compatible_vers = VERS_parse_string(stringValue->getCStringNoCopy());
+ if (compatible_vers < 0) {
+ result = false;
+ goto finish;
+ }
+
+ // OSBundleCompatibleVersion <= CFBundleVersion
+ if (compatible_vers > vers) {
+ result = false;
+ goto finish;
+ }
+ }
+
+ // CFBundleExecutable is a string - OPTIONAL
+ rawValue = extension->getObject("CFBundleExecutable");
+ if (rawValue) {
+ stringValue = OSDynamicCast(OSString, rawValue);
+ if (!stringValue || stringValue->getLength() == 0) {
+ result = false;
+ goto finish;
+ }
+ has_executable = true;
+ }
+
+ // OSKernelResource is a boolean value - OPTIONAL
+ rawValue = extension->getObject("OSKernelResource");
+ if (rawValue) {
+ booleanValue = OSDynamicCast(OSBoolean, rawValue);
+ if (!booleanValue) {
+ result = false;
+ goto finish;
+ }
+ is_kernel_resource = booleanValue->isTrue();
+ }
+
+ // IOKitPersonalities is a dictionary - OPTIONAL
+ rawValue = extension->getObject("IOKitPersonalities");
+ if (rawValue) {
+ personalities = OSDynamicCast(OSDictionary, rawValue);
+ if (!personalities) {
+ result = false;
+ goto finish;
+ }
+
+ keyIterator = OSCollectionIterator::withCollection(personalities);
+ if (!keyIterator) {
+ IOLog("Error: Failed to allocate iterator for personalities.\n");
+ LOG_DELAY();
+ result = false;
+ goto finish;
+ }
+
+ while ((key = OSDynamicCast(OSString, keyIterator->getNextObject()))) {
+ OSDictionary * personality = NULL; // do not release
+
+ // Each personality is a dictionary
+ personality = OSDynamicCast(OSDictionary,
+ personalities->getObject(key));
+ if (!personality) {
+ result = false;
+ goto finish;
+ }
+
+ // IOClass exists as a string - REQUIRED
+ if (!OSDynamicCast(OSString, personality->getObject("IOClass"))) {
+ result = false;
+ goto finish;
+ }
+
+ // IOProviderClass exists as a string - REQUIRED
+ if (!OSDynamicCast(OSString,
+ personality->getObject("IOProviderClass"))) {
+
+ result = false;
+ goto finish;
+ }
+
+ // CFBundleIdentifier is a string - OPTIONAL - INSERT IF ABSENT!
+ rawValue = personality->getObject("CFBundleIdentifier");
+ if (!rawValue) {
+ personality->setObject("CFBundleIdentifier", bundleIdentifier);
+ } else {
+ OSString * personalityID = NULL; // do not release
+ personalityID = OSDynamicCast(OSString, rawValue);
+ if (!personalityID) {
+ result = false;
+ goto finish;
+ } else {
+ // Length of CFBundleIdentifier is not >= KMOD_MAX_NAME
+ if (personalityID->getLength() >= KMOD_MAX_NAME) {
+ result = false;
+ goto finish;
+ }
+ }
+ }
+
+ // IOKitDebug is a number - OPTIONAL
+ rawValue = personality->getObject("IOKitDebug");
+ if (rawValue && !OSDynamicCast(OSNumber, rawValue)) {
+ result = false;
+ goto finish;
+ }
+ }
+
+ keyIterator->release();
+ keyIterator = NULL;
+ }
+
+
+ // OSBundleLibraries is a dictionary - REQUIRED if
+ // not kernel resource & has executable
+ //
+ rawValue = extension->getObject("OSBundleLibraries");
+ if (!rawValue && !is_kernel_resource && has_executable) {
result = false;
goto finish;
}
+ if (rawValue) {
+ libraries = OSDynamicCast(OSDictionary, rawValue);
+ if (!libraries) {
+ result = false;
+ goto finish;
+ }
+
+ keyIterator = OSCollectionIterator::withCollection(libraries);
+ if (!keyIterator) {
+ IOLog("Error: Failed to allocate iterator for libraries.\n");
+ LOG_DELAY();
+ result = false;
+ goto finish;
+ }
+
+ while ((key = OSDynamicCast(OSString,
+ keyIterator->getNextObject()))) {
+
+ OSString * libraryVersion = NULL; // do not release
+
+ // Each key's length is not >= KMOD_MAX_NAME
+ if (key->getLength() >= KMOD_MAX_NAME) {
+ result = false;
+ goto finish;
+ }
+
+ libraryVersion = OSDynamicCast(OSString,
+ libraries->getObject(key));
+ if (!libraryVersion) {
+ result = false;
+ goto finish;
+ }
+
+ // Each value is a valid version string
+ vers = VERS_parse_string(libraryVersion->getCStringNoCopy());
+ if (vers < 0) {
+ result = false;
+ goto finish;
+ }
+ }
+
+ keyIterator->release();
+ keyIterator = NULL;
+ }
+
+ // OSBundleRequired is a legal value - *not* required at boot time
+ // so we can do install CDs and the like with mkext files containing
+ // all normally-used drivers.
+ rawValue = extension->getObject("OSBundleRequired");
+ if (rawValue) {
+ stringValue = OSDynamicCast(OSString, rawValue);
+ if (!stringValue) {
+ result = false;
+ goto finish;
+ }
+ if (!stringValue->isEqualTo("Root") &&
+ !stringValue->isEqualTo("Local-Root") &&
+ !stringValue->isEqualTo("Network-Root") &&
+ !stringValue->isEqualTo("Safe Boot") &&
+ !stringValue->isEqualTo("Console")) {
+
+ result = false;
+ goto finish;
+ }
+
+ }
+
finish:
- // FIXME: Make return real result after kext conversion
- return true;
+ if (keyIterator) keyIterator->release();
+
+ if (!result) {
+ if (not_a_dict) {
+ if (index > -1) {
+ IOLog(VTYELLOW "mkext entry %d:." VTRESET, index);
+ } else {
+ IOLog(VTYELLOW "kernel extension" VTRESET);
+ }
+ IOLog(VTYELLOW "info dictionary isn't a dictionary\n"
+ VTRESET);
+ } else if (id_missing) {
+ if (index > -1) {
+ IOLog(VTYELLOW "mkext entry %d:." VTRESET, index);
+ } else {
+ IOLog(VTYELLOW "kernel extension" VTRESET);
+ }
+ IOLog(VTYELLOW "\"CFBundleIdentifier\" property is "
+ "missing or not a string\n"
+ VTRESET);
+ } else {
+ IOLog(VTYELLOW "kernel extension \"%s\": info dictionary is invalid\n"
+ VTRESET, bundleIdentifier->getCStringNoCopy());
+ }
+ LOG_DELAY();
+ }
return result;
}
OSString * candidateName = NULL;
OSString * incumbentVersionString = NULL;
OSString * candidateVersionString = NULL;
- UInt32 incumbent_vers = 0;
- UInt32 candidate_vers = 0;
+ VERS_version incumbent_vers = 0;
+ VERS_version candidate_vers = 0;
incumbentPlist = OSDynamicCast(OSDictionary,
incumbent->getObject("plist"));
goto finish;
}
- if (!VERS_parse_string(incumbentVersionString->getCStringNoCopy(),
- &incumbent_vers)) {
+ incumbent_vers = VERS_parse_string(incumbentVersionString->getCStringNoCopy());
+ if (incumbent_vers < 0) {
IOLog(VTYELLOW "Error parsing version string for extension %s (%s)\n"
VTRESET,
goto finish;
}
- if (!VERS_parse_string(candidateVersionString->getCStringNoCopy(),
- &candidate_vers)) {
+ candidate_vers = VERS_parse_string(candidateVersionString->getCStringNoCopy());
+ if (candidate_vers < 0) {
IOLog(VTYELLOW "Error parsing version string for extension %s (%s)\n"
VTRESET,
goto finish;
}
- if (!validateExtensionDict(driverPlist)) {
- IOLog("Error: Failed to validate property list "
- "for device tree entry \"%s\".\n", memory_map_name);
- LOG_DELAY();
+ if (!validateExtensionDict(driverPlist, -1)) {
+ // validateExtensionsDict() logs an error
error = 1;
goto finish;
}
finish:
if (loaded_kmod) {
- kfree(loaded_kmod, sizeof(kmod_info_t));
+ kfree((unsigned int)loaded_kmod, sizeof(kmod_info_t));
}
// do not release bootxDriverDataObject
i++) {
if (loaded_kmod) {
- kfree(loaded_kmod, sizeof(kmod_info_t));
+ kfree((unsigned int)loaded_kmod, sizeof(kmod_info_t));
loaded_kmod = 0;
}
if (driverPlistDataObject) {
+ kmem_free(kernel_map,
+ (unsigned int)driverPlistDataObject->getBytesNoCopy(),
+ driverPlistDataObject->getLength());
+
driverPlistDataObject->release();
driverPlistDataObject = NULL;
}
continue;
}
- if (!validateExtensionDict(driverPlist)) {
- IOLog("Error: Failed to validate property list "
- "for multikext archive entry %d.\n", i);
- LOG_DELAY();
+ if (!validateExtensionDict(driverPlist, i)) {
+ // validateExtensionsDict() logs an error
continue;
}
* compressed binary module, if there is one. If all four fields
* of the module entry are zero, there isn't one.
*/
- if (OSSwapBigToHostInt32(module_file->offset) ||
+ if (!(loaded_kmod && loaded_kmod->address) && (OSSwapBigToHostInt32(module_file->offset) ||
OSSwapBigToHostInt32(module_file->compsize) ||
OSSwapBigToHostInt32(module_file->realsize) ||
- OSSwapBigToHostInt32(module_file->modifiedsecs)) {
+ OSSwapBigToHostInt32(module_file->modifiedsecs))) {
moduleInfo = OSData::withCapacity(sizeof(MkextEntryInfo));
if (!moduleInfo) {
finish:
- if (loaded_kmod) kfree(loaded_kmod, sizeof(kmod_info_t));
- if (driverPlistDataObject) driverPlistDataObject->release();
+ if (loaded_kmod) kfree((unsigned int)loaded_kmod, sizeof(kmod_info_t));
+ if (driverPlistDataObject) {
+ kmem_free(kernel_map,
+ (unsigned int)driverPlistDataObject->getBytesNoCopy(),
+ driverPlistDataObject->getLength());
+ driverPlistDataObject->release();
+ }
if (driverPlist) driverPlist->release();
if (driverCode) driverCode->release();
if (moduleInfo) moduleInfo->release();
OSDictionary * startupExtensions = NULL; // don't release
OSArray * bootLoaderObjects = NULL; // don't release
- OSData * localMkextDataObject = NULL; // don't release
OSDictionary * extensions = NULL; // must release
MemoryMapFileInfo mkext_file_info;
OSCollectionIterator * keyIterator = NULL; // must release
goto finish;
}
- /* The mkext we've been handed (or the data it references) can go away,
- * so we need to make a local copy to keep around as long as it might
- * be needed.
- */
- localMkextDataObject = OSData::withData(mkextDataObject);
- if (!localMkextDataObject) {
- IOLog("Error: Couldn't copy extension archive.\n");
- LOG_DELAY();
- result = false;
- goto finish;
- }
-
- mkext_file_info.paddr = (UInt32)localMkextDataObject->getBytesNoCopy();
- mkext_file_info.length = localMkextDataObject->getLength();
+ mkext_file_info.paddr = (UInt32)mkextDataObject->getBytesNoCopy();
+ mkext_file_info.length = mkextDataObject->getLength();
/* Save the local mkext data object so that we can deallocate it later.
*/
- bootLoaderObjects->setObject(localMkextDataObject);
- localMkextDataObject->release();
+ bootLoaderObjects->setObject(mkextDataObject);
result = extractExtensionsFromArchive(&mkext_file_info, extensions);
if (!result) {
* a single extension is not considered fatal, and this function
* will simply skip the problematic extension to try the next one.
*********************************************************************/
+
bool recordStartupExtensions(void) {
bool result = true;
OSDictionary * startupExtensions = NULL; // must release
OSDictionary * newDriverDict = NULL; // must release
OSDictionary * driverPlist = NULL; // don't release
- IOLog("Recording startup extensions.\n");
- LOG_DELAY();
+ struct section * infosect;
+ struct section * symsect;
+ unsigned int prelinkedCount = 0;
existingExtensions = getStartupExtensions();
if (!existingExtensions) {
goto finish;
}
+ // --
+ // add any prelinked modules as startup extensions
+
+ infosect = getsectbyname("__PRELINK", "__info");
+ symsect = getsectbyname("__PRELINK", "__symtab");
+ if (infosect && infosect->addr && infosect->size
+ && symsect && symsect->addr && symsect->size) do
+ {
+ gIOPrelinkedModules = OSDynamicCast(OSArray,
+ OSUnserializeXML((const char *) infosect->addr, NULL));
+
+ if (!gIOPrelinkedModules)
+ break;
+ for( unsigned int idx = 0;
+ (propertyDict = OSDynamicCast(OSDictionary, gIOPrelinkedModules->getObject(idx)));
+ idx++)
+ {
+ enum { kPrelinkReservedCount = 4 };
+
+ /* Get the extension's module name. This is used to record
+ * the extension. Do *not* release the moduleName.
+ */
+ OSString * moduleName = OSDynamicCast(OSString,
+ propertyDict->getObject("CFBundleIdentifier"));
+ if (!moduleName) {
+ IOLog("Error: Prelinked module entry has "
+ "no \"CFBundleIdentifier\" property.\n");
+ LOG_DELAY();
+ continue;
+ }
+
+ /* Add the kext, & its plist.
+ */
+ newDriverDict = OSDictionary::withCapacity(4);
+ assert(newDriverDict);
+ newDriverDict->setObject("plist", propertyDict);
+ startupExtensions->setObject(moduleName, newDriverDict);
+ newDriverDict->release();
+
+ /* Add the code if present.
+ */
+ OSData * data = OSDynamicCast(OSData, propertyDict->getObject("OSBundlePrelink"));
+ if (data) {
+ if (data->getLength() < (kPrelinkReservedCount * sizeof(UInt32))) {
+ IOLog("Error: Prelinked module entry has "
+ "invalid \"OSBundlePrelink\" property.\n");
+ LOG_DELAY();
+ continue;
+ }
+ UInt32 * prelink;
+ prelink = (UInt32 *) data->getBytesNoCopy();
+ kmod_info_t * kmod_info = (kmod_info_t *) OSReadBigInt32(prelink, 0);
+ // end of "file" is end of symbol sect
+ data = OSData::withBytesNoCopy((void *) kmod_info->address,
+ symsect->addr + symsect->size - kmod_info->address);
+ newDriverDict->setObject("code", data);
+ data->release();
+ prelinkedCount++;
+ continue;
+ }
+ /* Add the symbols if present.
+ */
+ OSNumber * num = OSDynamicCast(OSNumber, propertyDict->getObject("OSBundlePrelinkSymbols"));
+ if (num) {
+ UInt32 offset = num->unsigned32BitValue();
+ data = OSData::withBytesNoCopy((void *) (symsect->addr + offset), symsect->size - offset);
+ newDriverDict->setObject("code", data);
+ data->release();
+ prelinkedCount++;
+ continue;
+ }
+ }
+ if (gIOPrelinkedModules)
+ IOLog("%d prelinked modules\n", prelinkedCount);
+
+ // free __info
+ vm_offset_t
+ virt = ml_static_ptovirt(infosect->addr);
+ if( virt) {
+ ml_static_mfree(virt, infosect->size);
+ }
+ newDriverDict = NULL;
+ }
+ while (false);
+ // --
+
bootxMemoryMap =
IORegistryEntry::fromPath(
"/chosen/memory-map", // path
keyIterator->release();
keyIterator = 0;
}
-#endif DEBUG
+#endif /* DEBUG */
}
if (newDriverDict) newDriverDict->release();
projects / apple / xnu.git / blobdiff