* Copyright (c) 2000,2008-2009 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
* 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,
* 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@
*/
/*
kOSKextLogErrorLevel |
kOSKextLogLoadFlag |
kOSKextLogKextBookkeepingFlag;
-
+
#if PRAGMA_MARK
#pragma mark Logging Bootstrap
#endif /* PRAGMA_MARK */
#define OSRuntimeLog(kext, flags, format, args...) \
do { \
- if (gKernelCPPInitialized) { \
- OSKextLog((kext), (flags), (format), ## args); \
- } else { \
- printf((format), ## args); \
- } \
+ if (gKernelCPPInitialized) { \
+ OSKextLog((kext), (flags), (format), ## args); \
+ } else { \
+ printf((format), ## args); \
+ } \
} while (0)
#if PRAGMA_MARK
void *
kern_os_malloc(size_t size)
{
- void *mem;
- if (size == 0) {
- return (0);
- }
+ void *mem;
+ if (size == 0) {
+ return 0;
+ }
- mem = kallocp_tag_bt((vm_size_t *)&size, VM_KERN_MEMORY_LIBKERN);
- if (!mem) {
- return (0);
- }
+ mem = kallocp_tag_bt((vm_size_t *)&size, VM_KERN_MEMORY_LIBKERN);
+ if (!mem) {
+ return 0;
+ }
#if OSALLOCDEBUG
- OSAddAtomic(size, &debug_iomalloc_size);
+ OSAddAtomic(size, &debug_iomalloc_size);
#endif
- bzero(mem, size);
+ bzero(mem, size);
- return mem;
+ return mem;
}
/*********************************************************************
void
kern_os_free(void * addr)
{
- size_t size;
- size = kalloc_size(addr);
+ size_t size;
+ size = kalloc_size(addr);
#if OSALLOCDEBUG
OSAddAtomic(-size, &debug_iomalloc_size);
#endif
- kfree_addr(addr);
+ kfree_addr(addr);
}
/*********************************************************************
*********************************************************************/
void *
kern_os_realloc(
- void * addr,
- size_t nsize)
+ void * addr,
+ size_t nsize)
{
- void *nmem;
- size_t osize;
+ void *nmem;
+ size_t osize;
- if (!addr) {
- return (kern_os_malloc(nsize));
- }
+ if (!addr) {
+ return kern_os_malloc(nsize);
+ }
- osize = kalloc_size(addr);
- if (nsize == osize) {
- return (addr);
- }
+ osize = kalloc_size(addr);
+ if (nsize == osize) {
+ return addr;
+ }
- if (nsize == 0) {
- kfree_addr(addr);
- return (0);
- }
+ if (nsize == 0) {
+ kfree_addr(addr);
+ return 0;
+ }
- nmem = kallocp_tag_bt((vm_size_t *)&nsize, VM_KERN_MEMORY_LIBKERN);
- if (!nmem){
- kfree_addr(addr);
- return (0);
- }
+ nmem = kallocp_tag_bt((vm_size_t *)&nsize, VM_KERN_MEMORY_LIBKERN);
+ if (!nmem) {
+ kfree_addr(addr);
+ return 0;
+ }
#if OSALLOCDEBUG
- OSAddAtomic((nsize - osize), &debug_iomalloc_size);
+ OSAddAtomic((nsize - osize), &debug_iomalloc_size);
#endif
- if (nsize > osize) {
- (void)memset((char *)nmem + osize, 0, nsize - osize);
- }
- (void)memcpy(nmem, addr, (nsize > osize) ? osize : nsize);
- kfree_addr(addr);
+ if (nsize > osize) {
+ (void)memset((char *)nmem + osize, 0, nsize - osize);
+ }
+ (void)memcpy(nmem, addr, (nsize > osize) ? osize : nsize);
+ kfree_addr(addr);
- return (nmem);
+ return nmem;
}
#if PRAGMA_MARK
*********************************************************************/
#if __GNUC__ >= 3
-void __cxa_pure_virtual( void ) { panic("%s", __FUNCTION__); }
+void
+__cxa_pure_virtual( void )
+{
+ panic("%s", __FUNCTION__);
+}
#else
-void __pure_virtual( void ) { panic("%s", __FUNCTION__); }
+void
+__pure_virtual( void )
+{
+ panic("%s", __FUNCTION__);
+}
#endif
extern lck_grp_t * IOLockGroup;
extern kmod_info_t g_kernel_kmod_info;
enum {
- kOSSectionNamesDefault = 0,
- kOSSectionNamesBuiltinKext = 1,
- kOSSectionNamesCount = 2,
+ kOSSectionNamesDefault = 0,
+ kOSSectionNamesBuiltinKext = 1,
+ kOSSectionNamesCount = 2,
};
enum {
- kOSSectionNameInitializer = 0,
- kOSSectionNameFinalizer = 1,
- kOSSectionNameCount = 2
+ kOSSectionNameInitializer = 0,
+ kOSSectionNameFinalizer = 1,
+ kOSSectionNameCount = 2
};
static const char *
-gOSStructorSectionNames[kOSSectionNamesCount][kOSSectionNameCount] = {
- { SECT_MODINITFUNC, SECT_MODTERMFUNC },
- { kBuiltinInitSection, kBuiltinTermSection }
+ gOSStructorSectionNames[kOSSectionNamesCount][kOSSectionNameCount] = {
+ { SECT_MODINITFUNC, SECT_MODTERMFUNC },
+ { kBuiltinInitSection, kBuiltinTermSection }
};
-void OSlibkernInit(void)
+void
+OSlibkernInit(void)
{
- // This must be called before calling OSRuntimeInitializeCPP.
- OSMetaClassBase::initialize();
+ // This must be called before calling OSRuntimeInitializeCPP.
+ OSMetaClassBase::initialize();
- g_kernel_kmod_info.address = (vm_address_t) &_mh_execute_header;
- if (kOSReturnSuccess != OSRuntimeInitializeCPP(NULL)) {
- // &g_kernel_kmod_info, gOSSectionNamesStandard, 0, 0)) {
- panic("OSRuntime: C++ runtime failed to initialize.");
- }
+ g_kernel_kmod_info.address = (vm_address_t) &_mh_execute_header;
+ if (kOSReturnSuccess != OSRuntimeInitializeCPP(NULL)) {
+ // &g_kernel_kmod_info, gOSSectionNamesStandard, 0, 0)) {
+ panic("OSRuntime: C++ runtime failed to initialize.");
+ }
- gKernelCPPInitialized = true;
+ gKernelCPPInitialized = true;
- return;
+ return;
}
__END_DECLS
static bool
OSRuntimeCallStructorsInSection(
- OSKext * theKext,
- kmod_info_t * kmodInfo,
- void * metaHandle,
- kernel_segment_command_t * segment,
- const char * sectionName,
- uintptr_t textStart,
- uintptr_t textEnd)
+ OSKext * theKext,
+ kmod_info_t * kmodInfo,
+ void * metaHandle,
+ kernel_segment_command_t * segment,
+ const char * sectionName,
+ uintptr_t textStart,
+ uintptr_t textEnd)
{
- kernel_section_t * section;
- bool result = TRUE;
-
- for (section = firstsect(segment);
- section != NULL;
- section = nextsect(segment, section))
- {
- if (strncmp(section->sectname, sectionName, sizeof(section->sectname) - 1)) continue;
-
- structor_t * structors = (structor_t *)section->addr;
- if (!structors) continue;
-
- structor_t structor;
- unsigned int num_structors = section->size / sizeof(structor_t);
- unsigned int hit_null_structor = 0;
- unsigned int firstIndex = 0;
-
- if (textStart)
- {
- // bsearch for any in range
- unsigned int baseIdx;
- unsigned int lim;
- uintptr_t value;
- firstIndex = num_structors;
- for (lim = num_structors, baseIdx = 0; lim; lim >>= 1)
- {
- value = (uintptr_t) structors[baseIdx + (lim >> 1)];
- if (!value) panic("%s: null structor", kmodInfo->name);
- if ((value >= textStart) && (value < textEnd))
- {
- firstIndex = (baseIdx + (lim >> 1));
- // scan back for the first in range
- for (; firstIndex; firstIndex--)
- {
- value = (uintptr_t) structors[firstIndex - 1];
- if ((value < textStart) || (value >= textEnd)) break;
- }
- break;
- }
- if (textStart > value)
- {
- // move right
- baseIdx += (lim >> 1) + 1;
- lim--;
- }
- // else move left
- }
- baseIdx = (baseIdx + (lim >> 1));
- }
- for (;
- (firstIndex < num_structors)
- && (!metaHandle || OSMetaClass::checkModLoad(metaHandle));
- firstIndex++)
- {
- if ((structor = structors[firstIndex]))
- {
- if ((textStart && ((uintptr_t) structor < textStart))
- || (textEnd && ((uintptr_t) structor >= textEnd))) break;
-
- (*structor)();
- }
- else if (!hit_null_structor)
- {
- hit_null_structor = 1;
- OSRuntimeLog(theKext, kOSRuntimeLogSpec,
- "Null structor in kext %s segment %s!",
- kmodInfo->name, section->segname);
- }
- }
- if (metaHandle) result = OSMetaClass::checkModLoad(metaHandle);
- break;
- } /* for (section...) */
- return (result);
+ kernel_section_t * section;
+ bool result = TRUE;
+
+ for (section = firstsect(segment);
+ section != NULL;
+ section = nextsect(segment, section)) {
+ if (strncmp(section->sectname, sectionName, sizeof(section->sectname) - 1)) {
+ continue;
+ }
+
+ structor_t * structors = (structor_t *)section->addr;
+ if (!structors) {
+ continue;
+ }
+
+ structor_t structor;
+ unsigned int num_structors = section->size / sizeof(structor_t);
+ unsigned int hit_null_structor = 0;
+ unsigned int firstIndex = 0;
+
+ if (textStart) {
+ // bsearch for any in range
+ unsigned int baseIdx;
+ unsigned int lim;
+ uintptr_t value;
+ firstIndex = num_structors;
+ for (lim = num_structors, baseIdx = 0; lim; lim >>= 1) {
+ value = (uintptr_t) structors[baseIdx + (lim >> 1)];
+ if (!value) {
+ panic("%s: null structor", kmodInfo->name);
+ }
+ if ((value >= textStart) && (value < textEnd)) {
+ firstIndex = (baseIdx + (lim >> 1));
+ // scan back for the first in range
+ for (; firstIndex; firstIndex--) {
+ value = (uintptr_t) structors[firstIndex - 1];
+ if ((value < textStart) || (value >= textEnd)) {
+ break;
+ }
+ }
+ break;
+ }
+ if (textStart > value) {
+ // move right
+ baseIdx += (lim >> 1) + 1;
+ lim--;
+ }
+ // else move left
+ }
+ baseIdx = (baseIdx + (lim >> 1));
+ }
+ for (;
+ (firstIndex < num_structors)
+ && (!metaHandle || OSMetaClass::checkModLoad(metaHandle));
+ firstIndex++) {
+ if ((structor = structors[firstIndex])) {
+ if ((textStart && ((uintptr_t) structor < textStart))
+ || (textEnd && ((uintptr_t) structor >= textEnd))) {
+ break;
+ }
+
+ (*structor)();
+ } else if (!hit_null_structor) {
+ hit_null_structor = 1;
+ OSRuntimeLog(theKext, kOSRuntimeLogSpec,
+ "Null structor in kext %s segment %s!",
+ kmodInfo->name, section->segname);
+ }
+ }
+ if (metaHandle) {
+ result = OSMetaClass::checkModLoad(metaHandle);
+ }
+ break;
+ } /* for (section...) */
+ return result;
}
/*********************************************************************
*********************************************************************/
kern_return_t
OSRuntimeFinalizeCPP(
- OSKext * theKext)
+ OSKext * theKext)
{
- kern_return_t result = KMOD_RETURN_FAILURE;
- void * metaHandle = NULL; // do not free
- kernel_mach_header_t * header;
- kernel_segment_command_t * segment;
- kmod_info_t * kmodInfo;
- const char ** sectionNames;
- uintptr_t textStart;
- uintptr_t textEnd;
-
- textStart = 0;
- textEnd = 0;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
- if (theKext) {
- if (!theKext->isCPPInitialized()) {
- result = KMOD_RETURN_SUCCESS;
- goto finish;
- }
- kmodInfo = theKext->kmod_info;
- if (!kmodInfo || !kmodInfo->address) {
- result = kOSKextReturnInvalidArgument;
- goto finish;
- }
- header = (kernel_mach_header_t *)kmodInfo->address;
- if (theKext->flags.builtin) {
- header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
- textStart = kmodInfo->address;
- textEnd = textStart + kmodInfo->size;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
- }
- } else {
- kmodInfo = &g_kernel_kmod_info;
- header = (kernel_mach_header_t *)kmodInfo->address;
- }
-
- /* OSKext checks for this condition now, but somebody might call
- * this function directly (the symbol is exported....).
- */
- if (OSMetaClass::modHasInstance(kmodInfo->name)) {
- // xxx - Don't log under errors? this is more of an info thing
- OSRuntimeLog(theKext, kOSRuntimeLogSpec,
- "Can't tear down kext %s C++; classes have instances:",
- kmodInfo->name);
- OSKext::reportOSMetaClassInstances(kmodInfo->name, kOSRuntimeLogSpec);
- result = kOSMetaClassHasInstances;
- goto finish;
- }
-
- /* Tell the meta class system that we are starting to unload.
- * metaHandle isn't actually needed on the finalize path,
- * so we don't check it here, even though OSMetaClass::postModLoad() will
- * return a failure (it only does actual work on the init path anyhow).
- */
- metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
-
- OSSymbol::checkForPageUnload((void *)kmodInfo->address,
- (void *)(kmodInfo->address + kmodInfo->size));
-
- header = (kernel_mach_header_t *)kmodInfo->address;
- segment = firstsegfromheader(header);
-
- for (segment = firstsegfromheader(header);
- segment != 0;
- segment = nextsegfromheader(header, segment)) {
-
- OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
- sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
- }
-
- (void)OSMetaClass::postModLoad(metaHandle);
-
- if (theKext) {
- theKext->setCPPInitialized(false);
- }
- result = KMOD_RETURN_SUCCESS;
+ kern_return_t result = KMOD_RETURN_FAILURE;
+ void * metaHandle = NULL;// do not free
+ kernel_mach_header_t * header;
+ kernel_segment_command_t * segment;
+ kmod_info_t * kmodInfo;
+ const char ** sectionNames;
+ uintptr_t textStart;
+ uintptr_t textEnd;
+
+ textStart = 0;
+ textEnd = 0;
+ sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
+ if (theKext) {
+ if (!theKext->isCPPInitialized()) {
+ result = KMOD_RETURN_SUCCESS;
+ goto finish;
+ }
+ kmodInfo = theKext->kmod_info;
+ if (!kmodInfo || !kmodInfo->address) {
+ result = kOSKextReturnInvalidArgument;
+ goto finish;
+ }
+ header = (kernel_mach_header_t *)kmodInfo->address;
+ if (theKext->flags.builtin) {
+ header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
+ textStart = kmodInfo->address;
+ textEnd = textStart + kmodInfo->size;
+ sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
+ }
+ } else {
+ kmodInfo = &g_kernel_kmod_info;
+ header = (kernel_mach_header_t *)kmodInfo->address;
+ }
+
+ /* OSKext checks for this condition now, but somebody might call
+ * this function directly (the symbol is exported....).
+ */
+ if (OSMetaClass::modHasInstance(kmodInfo->name)) {
+ // xxx - Don't log under errors? this is more of an info thing
+ OSRuntimeLog(theKext, kOSRuntimeLogSpec,
+ "Can't tear down kext %s C++; classes have instances:",
+ kmodInfo->name);
+ OSKext::reportOSMetaClassInstances(kmodInfo->name, kOSRuntimeLogSpec);
+ result = kOSMetaClassHasInstances;
+ goto finish;
+ }
+
+ /* Tell the meta class system that we are starting to unload.
+ * metaHandle isn't actually needed on the finalize path,
+ * so we don't check it here, even though OSMetaClass::postModLoad() will
+ * return a failure (it only does actual work on the init path anyhow).
+ */
+ metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
+
+ OSSymbol::checkForPageUnload((void *)kmodInfo->address,
+ (void *)(kmodInfo->address + kmodInfo->size));
+
+ header = (kernel_mach_header_t *)kmodInfo->address;
+ segment = firstsegfromheader(header);
+
+ for (segment = firstsegfromheader(header);
+ segment != 0;
+ segment = nextsegfromheader(header, segment)) {
+ OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
+ sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
+ }
+
+ (void)OSMetaClass::postModLoad(metaHandle);
+
+ if (theKext) {
+ theKext->setCPPInitialized(false);
+ }
+ result = KMOD_RETURN_SUCCESS;
finish:
- return result;
+ return result;
}
/*********************************************************************
*********************************************************************/
kern_return_t
OSRuntimeInitializeCPP(
- OSKext * theKext)
+ OSKext * theKext)
{
- kern_return_t result = KMOD_RETURN_FAILURE;
- kernel_mach_header_t * header = NULL;
- void * metaHandle = NULL; // do not free
- bool load_success = true;
- kernel_segment_command_t * segment = NULL; // do not free
- kernel_segment_command_t * failure_segment = NULL; // do not free
- kmod_info_t * kmodInfo;
- const char ** sectionNames;
- uintptr_t textStart;
- uintptr_t textEnd;
-
- textStart = 0;
- textEnd = 0;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
- if (theKext) {
- if (theKext->isCPPInitialized()) {
- result = KMOD_RETURN_SUCCESS;
- goto finish;
- }
-
- kmodInfo = theKext->kmod_info;
- if (!kmodInfo || !kmodInfo->address) {
- result = kOSKextReturnInvalidArgument;
- goto finish;
- }
- header = (kernel_mach_header_t *)kmodInfo->address;
-
- if (theKext->flags.builtin) {
- header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
- textStart = kmodInfo->address;
- textEnd = textStart + kmodInfo->size;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
- }
- } else {
- kmodInfo = &g_kernel_kmod_info;
- header = (kernel_mach_header_t *)kmodInfo->address;
- }
-
- /* Tell the meta class system that we are starting the load
- */
- metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
- assert(metaHandle);
- if (!metaHandle) {
- goto finish;
- }
-
- /* NO GOTO PAST HERE. */
-
- /* Scan the header for all constructor sections, in any
- * segment, and invoke the constructors within those sections.
- */
- for (segment = firstsegfromheader(header);
- segment != NULL && load_success;
- segment = nextsegfromheader(header, segment))
- {
- /* Record the current segment in the event of a failure.
- */
- failure_segment = segment;
- load_success = OSRuntimeCallStructorsInSection(
- theKext, kmodInfo, metaHandle, segment,
- sectionNames[kOSSectionNameInitializer],
- textStart, textEnd);
- } /* for (segment...) */
-
- /* We failed so call all of the destructors. We must do this before
- * calling OSMetaClass::postModLoad() as the OSMetaClass destructors
- * will alter state (in the metaHandle) used by that function.
- */
- if (!load_success) {
-
- /* Scan the header for all destructor sections, in any
- * segment, and invoke the constructors within those sections.
- */
- for (segment = firstsegfromheader(header);
- segment != failure_segment && segment != 0;
- segment = nextsegfromheader(header, segment)) {
-
- OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
- sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
-
- } /* for (segment...) */
- }
-
- /* Now, regardless of success so far, do the post-init registration
- * and cleanup. If we had to call the unloadCPP function, static
- * destructors have removed classes from the stalled list so no
- * metaclasses will actually be registered.
- */
- result = OSMetaClass::postModLoad(metaHandle);
-
- /* If we've otherwise been fine up to now, but OSMetaClass::postModLoad()
- * fails (typically due to a duplicate class), tear down all the C++
- * stuff from the kext. This isn't necessary for libkern/OSMetaClass stuff,
- * but may be necessary for other C++ code. We ignore the return value
- * because it's only a fail when there are existing instances of libkern
- * classes, and there had better not be any created on the C++ init path.
- */
- if (load_success && result != KMOD_RETURN_SUCCESS) {
- (void)OSRuntimeFinalizeCPP(theKext); //kmodInfo, sectionNames, textStart, textEnd);
- }
-
- if (theKext && load_success && result == KMOD_RETURN_SUCCESS) {
- theKext->setCPPInitialized(true);
- }
+ kern_return_t result = KMOD_RETURN_FAILURE;
+ kernel_mach_header_t * header = NULL;
+ void * metaHandle = NULL;// do not free
+ bool load_success = true;
+ kernel_segment_command_t * segment = NULL;// do not free
+ kernel_segment_command_t * failure_segment = NULL; // do not free
+ kmod_info_t * kmodInfo;
+ const char ** sectionNames;
+ uintptr_t textStart;
+ uintptr_t textEnd;
+
+ textStart = 0;
+ textEnd = 0;
+ sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
+ if (theKext) {
+ if (theKext->isCPPInitialized()) {
+ result = KMOD_RETURN_SUCCESS;
+ goto finish;
+ }
+
+ kmodInfo = theKext->kmod_info;
+ if (!kmodInfo || !kmodInfo->address) {
+ result = kOSKextReturnInvalidArgument;
+ goto finish;
+ }
+ header = (kernel_mach_header_t *)kmodInfo->address;
+
+ if (theKext->flags.builtin) {
+ header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
+ textStart = kmodInfo->address;
+ textEnd = textStart + kmodInfo->size;
+ sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
+ }
+ } else {
+ kmodInfo = &g_kernel_kmod_info;
+ header = (kernel_mach_header_t *)kmodInfo->address;
+ }
+
+ /* Tell the meta class system that we are starting the load
+ */
+ metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
+ assert(metaHandle);
+ if (!metaHandle) {
+ goto finish;
+ }
+
+ /* NO GOTO PAST HERE. */
+
+ /* Scan the header for all constructor sections, in any
+ * segment, and invoke the constructors within those sections.
+ */
+ for (segment = firstsegfromheader(header);
+ segment != NULL && load_success;
+ segment = nextsegfromheader(header, segment)) {
+ /* Record the current segment in the event of a failure.
+ */
+ failure_segment = segment;
+ load_success = OSRuntimeCallStructorsInSection(
+ theKext, kmodInfo, metaHandle, segment,
+ sectionNames[kOSSectionNameInitializer],
+ textStart, textEnd);
+ } /* for (segment...) */
+
+ /* We failed so call all of the destructors. We must do this before
+ * calling OSMetaClass::postModLoad() as the OSMetaClass destructors
+ * will alter state (in the metaHandle) used by that function.
+ */
+ if (!load_success) {
+ /* Scan the header for all destructor sections, in any
+ * segment, and invoke the constructors within those sections.
+ */
+ for (segment = firstsegfromheader(header);
+ segment != failure_segment && segment != 0;
+ segment = nextsegfromheader(header, segment)) {
+ OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
+ sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
+ } /* for (segment...) */
+ }
+
+ /* Now, regardless of success so far, do the post-init registration
+ * and cleanup. If we had to call the unloadCPP function, static
+ * destructors have removed classes from the stalled list so no
+ * metaclasses will actually be registered.
+ */
+ result = OSMetaClass::postModLoad(metaHandle);
+
+ /* If we've otherwise been fine up to now, but OSMetaClass::postModLoad()
+ * fails (typically due to a duplicate class), tear down all the C++
+ * stuff from the kext. This isn't necessary for libkern/OSMetaClass stuff,
+ * but may be necessary for other C++ code. We ignore the return value
+ * because it's only a fail when there are existing instances of libkern
+ * classes, and there had better not be any created on the C++ init path.
+ */
+ if (load_success && result != KMOD_RETURN_SUCCESS) {
+ (void)OSRuntimeFinalizeCPP(theKext); //kmodInfo, sectionNames, textStart, textEnd);
+ }
+
+ if (theKext && load_success && result == KMOD_RETURN_SUCCESS) {
+ theKext->setCPPInitialized(true);
+ }
finish:
- return result;
+ return result;
}
/*********************************************************************
-Unload a kernel segment.
+* Unload a kernel segment.
*********************************************************************/
void
OSRuntimeUnloadCPPForSegment(
- kernel_segment_command_t * segment)
+ kernel_segment_command_t * segment)
{
- OSRuntimeCallStructorsInSection(NULL, &g_kernel_kmod_info, NULL, segment,
- gOSStructorSectionNames[kOSSectionNamesDefault][kOSSectionNameFinalizer], 0, 0);
+ OSRuntimeCallStructorsInSection(NULL, &g_kernel_kmod_info, NULL, segment,
+ gOSStructorSectionNames[kOSSectionNamesDefault][kOSSectionNameFinalizer], 0, 0);
}
#if PRAGMA_MARK
void *
operator new(size_t size)
{
- void * result;
+ void * result;
- result = (void *) kern_os_malloc(size);
- return result;
+ result = (void *) kern_os_malloc(size);
+ return result;
}
void
operator delete(void * addr)
#if __cplusplus >= 201103L
- noexcept
+noexcept
#endif
{
- kern_os_free(addr);
- return;
+ kern_os_free(addr);
+ return;
}
void *
operator new[](unsigned long sz)
{
- if (sz == 0) sz = 1;
- return kern_os_malloc(sz);
+ if (sz == 0) {
+ sz = 1;
+ }
+ return kern_os_malloc(sz);
}
void
operator delete[](void * ptr)
#if __cplusplus >= 201103L
- noexcept
+noexcept
#endif
{
- if (ptr) {
- kern_os_free(ptr);
- }
- return;
+ if (ptr) {
+ kern_os_free(ptr);
+ }
+ return;
}
/* PR-6481964 - The compiler is going to check for size overflows in calls to
* compiler expects the name to be mangled.
*/
namespace std {
-
void
__throw_length_error(const char *msg __unused)
{
- panic("Size of array created by new[] has overflowed");
+ panic("Size of array created by new[] has overflowed");
}
-
};
projects / apple / xnu.git / blobdiff