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--- /dev/null
+++ dyld/dyld-519.2.2/src/dyld_process_info_notify.cpp
@@ -0,0 +1,506 @@
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
+ *
+ * Copyright (c) 2016 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <stdio.h>
+#include <mach/shared_region.h>
+#include <mach/mach_vm.h>
+#include <libkern/OSAtomic.h>
+
+#include "dyld_process_info.h"
+#include "dyld_process_info_internal.h"
+#include "dyld_images.h"
+#include "dyld_priv.h"
+
+#include "LaunchCache.h"
+#include "Loading.h"
+#include "AllImages.h"
+
+
+typedef void (^Notify)(bool unload, uint64_t timestamp, uint64_t machHeader, const uuid_t uuid, const char* path);
+typedef void (^NotifyExit)();
+typedef void (^NotifyMain)();
+
+
+//
+// Object used for monitoring another processes dyld loads
+//
+struct __attribute__((visibility("hidden"))) dyld_process_info_notify_base
+{
+ static dyld_process_info_notify_base* make(task_t task, dispatch_queue_t queue, Notify notify, NotifyExit notifyExit, kern_return_t* kr);
+ ~dyld_process_info_notify_base();
+
+ uint32_t& retainCount() const { return _retainCount; }
+ void setNotifyMain(NotifyMain notifyMain) const { _notifyMain = notifyMain; }
+
+ // override new and delete so we don't need to link with libc++
+ static void* operator new(size_t sz) { return malloc(sz); }
+ static void operator delete(void* p) { return free(p); }
+
+private:
+ dyld_process_info_notify_base(dispatch_queue_t queue, Notify notify, NotifyExit notifyExit, task_t task);
+ kern_return_t makePorts();
+ kern_return_t pokeSendPortIntoTarget();
+ kern_return_t unpokeSendPortInTarget();
+ void setMachSourceOnQueue();
+
+ mutable uint32_t _retainCount;
+ dispatch_queue_t _queue;
+ Notify _notify;
+ NotifyExit _notifyExit;
+ mutable NotifyMain _notifyMain;
+ task_t _targetTask;
+ dispatch_source_t _machSource;
+ uint64_t _portAddressInTarget;
+ mach_port_t _sendPortInTarget; // target is process being watched for image loading/unloading
+ mach_port_t _receivePortInMonitor; // monitor is process being notified of image loading/unloading
+};
+
+
+dyld_process_info_notify_base::dyld_process_info_notify_base(dispatch_queue_t queue, Notify notify, NotifyExit notifyExit, task_t task)
+ : _retainCount(1), _queue(queue), _notify(notify), _notifyExit(notifyExit), _notifyMain(NULL), _targetTask(task), _machSource(NULL), _portAddressInTarget(0), _sendPortInTarget(0), _receivePortInMonitor(0)
+{
+ dispatch_retain(_queue);
+}
+
+dyld_process_info_notify_base::~dyld_process_info_notify_base()
+{
+ if ( _machSource ) {
+ dispatch_release(_machSource);
+ _machSource = NULL;
+ }
+ if ( _portAddressInTarget ) {
+ unpokeSendPortInTarget();
+ _portAddressInTarget = 0;
+ }
+ if ( _sendPortInTarget ) {
+ _sendPortInTarget = 0;
+ }
+ dispatch_release(_queue);
+ if ( _receivePortInMonitor != 0 ) {
+ mach_port_deallocate(mach_task_self(), _receivePortInMonitor);
+ _receivePortInMonitor = 0;
+ }
+}
+
+
+dyld_process_info_notify_base* dyld_process_info_notify_base::make(task_t task, dispatch_queue_t queue, Notify notify, NotifyExit notifyExit, kern_return_t* kr)
+{
+ dyld_process_info_notify_base* obj = new dyld_process_info_notify_base(queue, notify, notifyExit, task);
+
+ if ( kern_return_t r = obj->makePorts() ) {
+ if ( kr != NULL )
+ *kr = r;
+ goto fail;
+ }
+
+ obj->setMachSourceOnQueue();
+
+ if ( kern_return_t r = obj->pokeSendPortIntoTarget() ) {
+ if ( kr != NULL )
+ *kr = r;
+ goto fail;
+ }
+
+ if ( kr != NULL )
+ *kr = KERN_SUCCESS;
+ return obj;
+
+fail:
+ delete obj;
+ return NULL;
+}
+
+
+kern_return_t dyld_process_info_notify_base::makePorts()
+{
+ // Allocate a port to listen on in this monitoring task
+ if ( kern_return_t r = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &_receivePortInMonitor) )
+ return r;
+
+ // Add send rights for replying
+ if ( kern_return_t r = mach_port_insert_right(mach_task_self(), _receivePortInMonitor, _receivePortInMonitor, MACH_MSG_TYPE_MAKE_SEND) )
+ return r;
+
+ // Allocate a name in the target. We need a new name to add send rights to
+ if ( kern_return_t r = mach_port_allocate(_targetTask, MACH_PORT_RIGHT_DEAD_NAME, &_sendPortInTarget) )
+ return r;
+
+ // Deallocate the dead name
+ if ( kern_return_t r = mach_port_mod_refs(_targetTask, _sendPortInTarget, MACH_PORT_RIGHT_DEAD_NAME, -1) )
+ return r;
+
+ // Make the dead name a send right to our listening port
+ if ( kern_return_t r = mach_port_insert_right(_targetTask, _sendPortInTarget, _receivePortInMonitor, MACH_MSG_TYPE_MAKE_SEND) )
+ return r;
+
+ // Notify us if the target dies
+ mach_port_t previous = MACH_PORT_NULL;
+ if ( kern_return_t r = mach_port_request_notification(_targetTask, _sendPortInTarget, MACH_NOTIFY_DEAD_NAME, 0, _receivePortInMonitor, MACH_MSG_TYPE_MAKE_SEND_ONCE, &previous))
+ return r;
+
+ //fprintf(stderr, "_sendPortInTarget=%d, _receivePortInMonitor=%d\n", _sendPortInTarget, _receivePortInMonitor);
+ return KERN_SUCCESS;
+}
+
+
+
+void dyld_process_info_notify_base::setMachSourceOnQueue()
+{
+ NotifyExit exitHandler = _notifyExit;
+ _machSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MACH_RECV, _receivePortInMonitor, 0, _queue);
+ dispatch_source_set_event_handler(_machSource, ^{
+ uint8_t messageBuffer[DYLD_PROCESS_INFO_NOTIFY_MAX_BUFFER_SIZE];
+ mach_msg_header_t* h = (mach_msg_header_t*)messageBuffer;
+
+ kern_return_t r = mach_msg(h, MACH_RCV_MSG, 0, sizeof(messageBuffer), _receivePortInMonitor, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+ if ( r == KERN_SUCCESS ) {
+ //fprintf(stderr, "received message id=0x%X, size=%d\n", h->msgh_id, h->msgh_size);
+ if ( h->msgh_id == DYLD_PROCESS_INFO_NOTIFY_LOAD_ID || h->msgh_id == DYLD_PROCESS_INFO_NOTIFY_UNLOAD_ID ) {
+ // run notifier block for each [un]load image
+ const dyld_process_info_notify_header* header = (dyld_process_info_notify_header*)messageBuffer;
+ const dyld_process_info_image_entry* entries = (dyld_process_info_image_entry*)&messageBuffer[header->imagesOffset];
+ const char* const stringPool = (char*)&messageBuffer[header->stringsOffset];
+ for (unsigned i=0; i < header->imageCount; ++i) {
+ bool isUnload = (h->msgh_id == DYLD_PROCESS_INFO_NOTIFY_UNLOAD_ID);
+ _notify(isUnload, header->timestamp, entries[i].loadAddress, entries[i].uuid, stringPool + entries[i].pathStringOffset);
+ }
+ // reply to dyld, so it can continue
+ mach_msg_header_t replyHeader;
+ replyHeader.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND);
+ replyHeader.msgh_id = 0;
+ replyHeader.msgh_local_port = MACH_PORT_NULL;
+ replyHeader.msgh_remote_port = h->msgh_remote_port;
+ replyHeader.msgh_reserved = 0;
+ replyHeader.msgh_size = sizeof(replyHeader);
+ mach_msg(&replyHeader, MACH_SEND_MSG | MACH_SEND_TIMEOUT, replyHeader.msgh_size, 0, MACH_PORT_NULL, 100, MACH_PORT_NULL);
+ }
+ else if ( h->msgh_id == DYLD_PROCESS_INFO_NOTIFY_MAIN_ID ) {
+ if ( _notifyMain != NULL ) {
+ _notifyMain();
+ }
+ // reply to dyld, so it can continue
+ mach_msg_header_t replyHeader;
+ replyHeader.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND);
+ replyHeader.msgh_id = 0;
+ replyHeader.msgh_local_port = MACH_PORT_NULL;
+ replyHeader.msgh_remote_port = h->msgh_remote_port;
+ replyHeader.msgh_reserved = 0;
+ replyHeader.msgh_size = sizeof(replyHeader);
+ mach_msg(&replyHeader, MACH_SEND_MSG | MACH_SEND_TIMEOUT, replyHeader.msgh_size, 0, MACH_PORT_NULL, 100, MACH_PORT_NULL);
+ }
+ else if ( h->msgh_id == MACH_NOTIFY_PORT_DELETED ) {
+ mach_port_t deadPort = ((mach_port_deleted_notification_t *)h)->not_port;
+ //fprintf(stderr, "received message id=MACH_NOTIFY_PORT_DELETED, size=%d, deadPort=%d\n", h->msgh_size, deadPort);
+ if ( deadPort == _sendPortInTarget ) {
+ // target process died. Clean up ports
+ _sendPortInTarget = 0;
+ mach_port_deallocate(mach_task_self(), _receivePortInMonitor);
+ _receivePortInMonitor = 0;
+ _portAddressInTarget = 0;
+ // notify that target is gone
+ exitHandler();
+ }
+ }
+ else {
+ fprintf(stderr, "received unknown message id=0x%X, size=%d\n", h->msgh_id, h->msgh_size);
+ }
+ }
+ });
+ dispatch_resume(_machSource);
+}
+
+
+kern_return_t dyld_process_info_notify_base::pokeSendPortIntoTarget()
+{
+ // get location on all_image_infos in target task
+ task_dyld_info_data_t taskDyldInfo;
+ mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT;
+ kern_return_t r = task_info(_targetTask, TASK_DYLD_INFO, (task_info_t)&taskDyldInfo, &count);
+ if ( r )
+ return r;
+
+ // remap the page containing all_image_infos into this process r/w
+ mach_vm_address_t mappedAddress = 0;
+ mach_vm_size_t mappedSize = taskDyldInfo.all_image_info_size;
+ vm_prot_t curProt = VM_PROT_NONE;
+ vm_prot_t maxProt = VM_PROT_NONE;
+ r = mach_vm_remap(mach_task_self(), &mappedAddress, mappedSize, 0, VM_FLAGS_ANYWHERE | VM_FLAGS_RETURN_DATA_ADDR,
+ _targetTask, taskDyldInfo.all_image_info_addr, false, &curProt, &maxProt, VM_INHERIT_NONE);
+ if ( r )
+ return r;
+ if ( curProt != (VM_PROT_READ|VM_PROT_WRITE) )
+ return KERN_PROTECTION_FAILURE;
+
+ // atomically set port into all_image_info_struct
+ static_assert(sizeof(mach_port_t) == sizeof(uint32_t), "machport size not 32-bits");
+
+ mach_vm_address_t mappedAddressToPokePort = 0;
+ if ( taskDyldInfo.all_image_info_format == TASK_DYLD_ALL_IMAGE_INFO_32 )
+ mappedAddressToPokePort = mappedAddress + offsetof(dyld_all_image_infos_32,notifyMachPorts);
+ else
+ mappedAddressToPokePort = mappedAddress + offsetof(dyld_all_image_infos_64,notifyMachPorts);
+
+ // use first available slot
+ bool slotFound = false;
+ for (int slotIndex=0; slotIndex < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; ++slotIndex) {
+ if ( OSAtomicCompareAndSwap32Barrier(0, _sendPortInTarget, (volatile int32_t*)mappedAddressToPokePort) ) {
+ slotFound = true;
+ break;
+ }
+ mappedAddressToPokePort += sizeof(uint32_t);
+ }
+ if ( !slotFound ) {
+ mach_vm_deallocate(mach_task_self(), mappedAddress, mappedSize);
+ return KERN_UREFS_OVERFLOW;
+ }
+ _portAddressInTarget = taskDyldInfo.all_image_info_addr + mappedAddressToPokePort - mappedAddress;
+ //fprintf(stderr, "poked port %d into target at address 0x%llX\n", _sendPortInTarget, _portAddressInTarget);
+ mach_vm_deallocate(mach_task_self(), mappedAddress, mappedSize);
+ return r;
+}
+
+
+
+kern_return_t dyld_process_info_notify_base::unpokeSendPortInTarget()
+{
+ // remap the page containing all_image_infos into this process r/w
+ mach_vm_address_t mappedAddress = 0;
+ mach_vm_size_t mappedSize = sizeof(mach_port_t);
+ vm_prot_t curProt = VM_PROT_NONE;
+ vm_prot_t maxProt = VM_PROT_NONE;
+ kern_return_t r = mach_vm_remap(mach_task_self(), &mappedAddress, mappedSize, 0, VM_FLAGS_ANYWHERE | VM_FLAGS_RETURN_DATA_ADDR,
+ _targetTask, _portAddressInTarget, false, &curProt, &maxProt, VM_INHERIT_NONE);
+ if ( r )
+ return r;
+ if ( curProt != (VM_PROT_READ|VM_PROT_WRITE) )
+ return KERN_PROTECTION_FAILURE;
+
+ OSAtomicCompareAndSwap32Barrier(_sendPortInTarget, 0, (volatile int32_t*)mappedAddress);
+
+ //fprintf(stderr, "cleared port %d from target\n", _sendPortInTarget);
+ mach_vm_deallocate(mach_task_self(), mappedAddress, mappedSize);
+ return r;
+}
+
+
+
+dyld_process_info_notify _dyld_process_info_notify(task_t task, dispatch_queue_t queue,
+ void (^notify)(bool unload, uint64_t timestamp, uint64_t machHeader, const uuid_t uuid, const char* path),
+ void (^notifyExit)(),
+ kern_return_t* kr)
+{
+ return dyld_process_info_notify_base::make(task, queue, notify, notifyExit, kr);
+}
+
+void _dyld_process_info_notify_main(dyld_process_info_notify object, void (^notifyMain)())
+{
+ object->setNotifyMain(notifyMain);
+}
+
+void _dyld_process_info_notify_retain(dyld_process_info_notify object)
+{
+ object->retainCount() += 1;
+}
+
+void _dyld_process_info_notify_release(dyld_process_info_notify object)
+{
+ object->retainCount() -= 1;
+ if ( object->retainCount() == 0 )
+ delete object;
+}
+
+
+
+
+
+
+
+namespace dyld3 {
+
+
+static mach_port_t sNotifyReplyPorts[DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT];
+static bool sZombieNotifiers[DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT];
+
+static void notifyMonitoringDyld(bool unloading, unsigned portSlot, const launch_cache::DynArray<loader::ImageInfo>& imageInfos)
+{
+ if ( sZombieNotifiers[portSlot] )
+ return;
+
+ unsigned entriesSize = (unsigned)imageInfos.count()*sizeof(dyld_process_info_image_entry);
+ unsigned pathsSize = 0;
+ for (uintptr_t i=0; i < imageInfos.count(); ++i) {
+ launch_cache::Image image(imageInfos[i].imageData);
+ pathsSize += (strlen(image.path()) + 1);
+ }
+ unsigned totalSize = (sizeof(dyld_process_info_notify_header) + MAX_TRAILER_SIZE + entriesSize + pathsSize + 127) & -128; // align
+ if ( totalSize > DYLD_PROCESS_INFO_NOTIFY_MAX_BUFFER_SIZE ) {
+ // Putting all image paths into one message would make buffer too big.
+ // Instead split into two messages. Recurse as needed until paths fit in buffer.
+ unsigned imageHalfCount = (unsigned)imageInfos.count()/2;
+ const launch_cache::DynArray<loader::ImageInfo> firstHalf(imageHalfCount, (loader::ImageInfo*)&imageInfos[0]);
+ const launch_cache::DynArray<loader::ImageInfo> secondHalf(imageInfos.count() - imageHalfCount, (loader::ImageInfo*)&imageInfos[imageHalfCount]);
+ notifyMonitoringDyld(unloading, portSlot, firstHalf);
+ notifyMonitoringDyld(unloading, portSlot, secondHalf);
+ return;
+ }
+ // build buffer to send
+ dyld_all_image_infos* allImageInfo = gAllImages.oldAllImageInfo();
+ uint8_t buffer[totalSize];
+ dyld_process_info_notify_header* header = (dyld_process_info_notify_header*)buffer;
+ header->version = 1;
+ header->imageCount = (uint32_t)imageInfos.count();
+ header->imagesOffset = sizeof(dyld_process_info_notify_header);
+ header->stringsOffset = sizeof(dyld_process_info_notify_header) + entriesSize;
+ header->timestamp = allImageInfo->infoArrayChangeTimestamp;
+ dyld_process_info_image_entry* entries = (dyld_process_info_image_entry*)&buffer[header->imagesOffset];
+ char* const pathPoolStart = (char*)&buffer[header->stringsOffset];
+ char* pathPool = pathPoolStart;
+ for (uintptr_t i=0; i < imageInfos.count(); ++i) {
+ launch_cache::Image image(imageInfos[i].imageData);
+ strcpy(pathPool, image.path());
+ uint32_t len = (uint32_t)strlen(pathPool);
+ memcpy(entries->uuid, image.uuid(), sizeof(uuid_t));
+ entries->loadAddress = (uint64_t)imageInfos[i].loadAddress;
+ entries->pathStringOffset = (uint32_t)(pathPool - pathPoolStart);
+ entries->pathLength = len;
+ pathPool += (len +1);
+ ++entries;
+ }
+ // lazily alloc reply port
+ if ( sNotifyReplyPorts[portSlot] == 0 ) {
+ if ( !mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &sNotifyReplyPorts[portSlot]) )
+ mach_port_insert_right(mach_task_self(), sNotifyReplyPorts[portSlot], sNotifyReplyPorts[portSlot], MACH_MSG_TYPE_MAKE_SEND);
+ //log("allocated reply port %d\n", sNotifyReplyPorts[portSlot]);
+ }
+ //log("found port to send to\n");
+ mach_msg_header_t* h = (mach_msg_header_t*)buffer;
+ h->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND,MACH_MSG_TYPE_MAKE_SEND); // MACH_MSG_TYPE_MAKE_SEND_ONCE
+ h->msgh_id = unloading ? DYLD_PROCESS_INFO_NOTIFY_UNLOAD_ID : DYLD_PROCESS_INFO_NOTIFY_LOAD_ID;
+ h->msgh_local_port = sNotifyReplyPorts[portSlot];
+ h->msgh_remote_port = allImageInfo->notifyPorts[portSlot];
+ h->msgh_reserved = 0;
+ h->msgh_size = (mach_msg_size_t)sizeof(buffer);
+ //log("sending to port[%d]=%d, size=%d, reply port=%d, id=0x%X\n", portSlot, allImageInfo->notifyPorts[portSlot], h->msgh_size, sNotifyReplyPorts[portSlot], h->msgh_id);
+ kern_return_t sendResult = mach_msg(h, MACH_SEND_MSG | MACH_RCV_MSG | MACH_RCV_TIMEOUT, h->msgh_size, h->msgh_size, sNotifyReplyPorts[portSlot], 2000, MACH_PORT_NULL);
+ //log("send result = 0x%X, msg_id=%d, msg_size=%d\n", sendResult, h->msgh_id, h->msgh_size);
+ if ( sendResult == MACH_SEND_INVALID_DEST ) {
+ // sender is not responding, detatch
+ //log("process requesting notification gone. deallocation send port %d and receive port %d\n", allImageInfo->notifyPorts[portSlot], sNotifyReplyPorts[portSlot]);
+ mach_port_deallocate(mach_task_self(), allImageInfo->notifyPorts[portSlot]);
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[portSlot]);
+ allImageInfo->notifyPorts[portSlot] = 0;
+ sNotifyReplyPorts[portSlot] = 0;
+ }
+ else if ( sendResult == MACH_RCV_TIMED_OUT ) {
+ // client took too long, ignore him from now on
+ sZombieNotifiers[portSlot] = true;
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[portSlot]);
+ sNotifyReplyPorts[portSlot] = 0;
+ }
+}
+
+void AllImages::notifyMonitorMain()
+{
+ dyld_all_image_infos* allImageInfo = gAllImages.oldAllImageInfo();
+ for (int slot=0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; ++slot) {
+ if ( (allImageInfo->notifyPorts[slot] != 0 ) && !sZombieNotifiers[slot] ) {
+ if ( sNotifyReplyPorts[slot] == 0 ) {
+ if ( !mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &sNotifyReplyPorts[slot]) )
+ mach_port_insert_right(mach_task_self(), sNotifyReplyPorts[slot], sNotifyReplyPorts[slot], MACH_MSG_TYPE_MAKE_SEND);
+ //dyld::log("allocated reply port %d\n", sNotifyReplyPorts[slot]);
+ }
+ //dyld::log("found port to send to\n");
+ uint8_t messageBuffer[sizeof(mach_msg_header_t) + MAX_TRAILER_SIZE];
+ mach_msg_header_t* h = (mach_msg_header_t*)messageBuffer;
+ h->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND,MACH_MSG_TYPE_MAKE_SEND); // MACH_MSG_TYPE_MAKE_SEND_ONCE
+ h->msgh_id = DYLD_PROCESS_INFO_NOTIFY_MAIN_ID;
+ h->msgh_local_port = sNotifyReplyPorts[slot];
+ h->msgh_remote_port = allImageInfo->notifyPorts[slot];
+ h->msgh_reserved = 0;
+ h->msgh_size = (mach_msg_size_t)sizeof(messageBuffer);
+ //dyld::log("sending to port[%d]=%d, size=%d, reply port=%d, id=0x%X\n", slot, allImageInfo->notifyPorts[slot], h->msgh_size, sNotifyReplyPorts[slot], h->msgh_id);
+ kern_return_t sendResult = mach_msg(h, MACH_SEND_MSG | MACH_RCV_MSG | MACH_RCV_TIMEOUT, h->msgh_size, h->msgh_size, sNotifyReplyPorts[slot], 2000, MACH_PORT_NULL);
+ //dyld::log("send result = 0x%X, msg_id=%d, msg_size=%d\n", sendResult, h->msgh_id, h->msgh_size);
+ if ( sendResult == MACH_SEND_INVALID_DEST ) {
+ // sender is not responding, detatch
+ //dyld::log("process requesting notification gone. deallocation send port %d and receive port %d\n", allImageInfo->notifyPorts[slot], sNotifyReplyPorts[slot]);
+ mach_port_deallocate(mach_task_self(), allImageInfo->notifyPorts[slot]);
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[slot]);
+ allImageInfo->notifyPorts[slot] = 0;
+ sNotifyReplyPorts[slot] = 0;
+ }
+ else if ( sendResult == MACH_RCV_TIMED_OUT ) {
+ // client took too long, ignore him from now on
+ sZombieNotifiers[slot] = true;
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[slot]);
+ sNotifyReplyPorts[slot] = 0;
+ }
+ }
+ }
+}
+
+void AllImages::notifyMonitorLoads(const launch_cache::DynArray<loader::ImageInfo>& newImages)
+{
+ // notify each monitoring process
+ dyld_all_image_infos* allImageInfo = gAllImages.oldAllImageInfo();
+ for (int slot=0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; ++slot) {
+ if ( allImageInfo->notifyPorts[slot] != 0 ) {
+ notifyMonitoringDyld(false, slot, newImages);
+ }
+ else if ( sNotifyReplyPorts[slot] != 0 ) {
+ // monitoring process detached from this process, so release reply port
+ //dyld::log("deallocated reply port %d\n", sNotifyReplyPorts[slot]);
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[slot]);
+ sNotifyReplyPorts[slot] = 0;
+ sZombieNotifiers[slot] = false;
+ }
+ }
+}
+
+void AllImages::notifyMonitorUnloads(const launch_cache::DynArray<loader::ImageInfo>& unloadingImages)
+{
+ // notify each monitoring process
+ dyld_all_image_infos* allImageInfo = gAllImages.oldAllImageInfo();
+ for (int slot=0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; ++slot) {
+ if ( allImageInfo->notifyPorts[slot] != 0 ) {
+ notifyMonitoringDyld(true, slot, unloadingImages);
+ }
+ else if ( sNotifyReplyPorts[slot] != 0 ) {
+ // monitoring process detached from this process, so release reply port
+ //dyld::log("deallocated reply port %d\n", sNotifyReplyPorts[slot]);
+ mach_port_deallocate(mach_task_self(), sNotifyReplyPorts[slot]);
+ sNotifyReplyPorts[slot] = 0;
+ sZombieNotifiers[slot] = false;
+ }
+ }
+}
+
+} // namespace dyld3
+
+
+
+