, len, prot, flags, pgoff);up_write(¤t->mm->mmap_sem);if (file)fput(file);out:return retval;}
This function is used to obtain available virtual address space (vm_area_struct * VMA) from the current process and obtain VMA in mmap_region, then, call file-> f_op-> MMAP (file, VMA) and call the MMAP-supported driver for processing.
The following uses the binder driver as an example.3. Binder MMAP implementation
The binder mechanism implements the IPC and shared memory in different ways, and it takes aValue CopyThe way, the process of passing through the entity follows the Parcelable protocol, the BP side is responsible for writing to the parcel, the BN side is responsible for reading from the parcel restore, the order is agreed by both parties. Prototypes are as follows,the bp/bn end received in factare just clones of each other.。 Aidl (Android Interface Def
How to set up the pods of the multi-engineering binder(2014-07-17 13:57:10)reproduced
Tags: united Multi-Project
Category: iOS development
Today, Cocoapods is used more and more, and almost every project will be used. Sometimes our project may be composed of several modules, each module can be used as a separate project, and then all the works are for the main project use, this is the multi-engineering, how to use th
. Set the library Search paths to: $ (srcroot)/. /libsCompile and run to implement the binder(Note: Select Simulator iphone 5.0 simulator, when compiling the static library, the final file will be in Debug-iphonesimulator, even if it succeeds. A file is still red,This is a bug that may be xcode and does not automatically switch pathsBecause $ (built_products_dir) refers to a location that is Build/debug-iphonesos, not a debug-iphonesimulator that cont
On the Internet today, I saw a small example of using C ++ to implement the binder communication, but I didn't provide a complete demo. I made it and sorted it out. I can run it on a real machine. The basic architecture is the same, and the code will not be analyzed. To analyze the Binder Mechanism, you can use it as a template. You need to add or modify functions, that is to say, it is easy to add virtual
Analysis on How to Improve Anti-Trojan tracking capability from the perspective of anti-Trojan
Preface
First, I declare that I am neither a technician of the antivirus software manufacturer nor a hacker. Writing this article only records some analysis of Trojan horse technology, and does not mean that these technologies are the mainstream technologies in the curr
The General people do not understand the virus and Trojan is what is going on, even if the computer knows a lot of people do not necessarily know the difference between Trojans and viruses, usually we collectively called Trojan "Trojan virus", as if the Trojan is a virus, Trojan
The Porn clicker Trojan struck again, and hundreds of applications were infected with the Porn clicker Trojan.
Recently, ESET security personnel found hundreds of apps infected with Porn clicker Trojans in the Google Play app store.
Porn clicker Trojans are infected by disguising them as popular game applications. They use names and icons that are very similar to valid applications. For example, researche
=Find_svc (S, Len); if(SI) {if(si->handle) {Aloge ("add_service ('%s ',%x) uid=%d-already registered, override\n", Str8 (S, Len), handle, UID); Svcinfo_death (BS, SI); } si->handle =handle;} Else { //Focus here, if the service has not been add, then create a node for it, save the name and handleSi =malloc(sizeof(*si) + (len +1) *sizeof(uint16_t)); if(!si) {Aloge ("add_service ('%s ',%x) Uid=%d-out of memory\n", Str8 (S, Len), handle, UID); return-1; } si->handle =handle; Si->len =Len;
Summary of php website Trojan repair methods, php Trojan summary. Summary of php website Trojan repair methods, php Trojan summary in linux we can use commands to search Trojan files, go to the code installation directory and execute the following command code: Copy the code
Android BinderAndroid Interprocess CommunicationThorsten SchreiberFirst Advisor: Juraj somorovskySecond Advisor: Daniel Bu beta Meyer
When reading the android binder document, read:
1. the privileged level is called ring in English and must be supported by hardware. Intel hardware implements four privileged levels. Linux uses only 0 and 3.
2. Linux communication mechanism: signal, pipeline, socket, message queue, semaphore, and shared memory.
3. The
, and the service-to-client binding is implemented asynchronously, so the client needs to pass the Serviceconnection Interface to monitor the connection to the service. When the client calls Bindservice, Bindservice immediately returns and then calls Serviceconnection when the Android system establishes a link between the client and the service. Onserviceconnection to inform the client and service that the link was established successfully and to return the client to the Ibind object provided by
The binder is the core mechanism for implementing inter-process communication in the Android system. In essence, it is a specific implementation of the proxy mode, just like COM and CORBA.
The basic idea of the proxy mode is that the client program obtains the proxy object of the server in some way. All the service requests to the server are sent to the proxy object, which is responsible for communication with the server. From the client perspective,
[Android] Android Layout Binder -- automatically generates the java code artifact of findViewById Based on the layout Layout file, androidbinder
Android Layout Binder is a website that can automatically generate findViewById java code online based on the layout Layout file.
Web site is http://android.lineten.net/layout.php
How does Android get the custom components in the Layout file in Layout?
Fi
$ (srcroot)/.. /include3. Set the header Search paths to: $ (srcroot)/. /include4. Set the library Search paths to: $ (srcroot)/. /libsCompile and run to implement the binder(Note: Select Simulator iphone 5.0 simulator, when compiling the static library, the final file will be in Debug-iphonesimulator, even if it succeeds. A file is still red,This is a bug that may be xcode and does not automatically switch pathsBecause $ (built_products_dir) refers t
Internal mechanism _ Review Binder framework key pointsWhen the server registers the service, it provides different ptr/cookie for each service.The driver constructs a binder_node for each service, and it also contains Ptr/cookieClient must first GetService before using the service: it constructs a binder_ref in the driver,BINDER_REF contains DESC, node member, DESC is an integer, node points to the binder_node of the corresponding serviceWhen using t
Example of C program use for binder systemsIpc:inter-process Communication, interprocess communicationRpc:remote Procedure Call, remote procedure callsHere we use only the BINDRT system that has been implemented in the Android system directly.The specific source code is in the Frameworks\native\cmds\servicemanager\ directory. Service_manager.c: A. Binder_open B. Binder_become_context_manager C. Binder_loop (BS, Svcmgr_ handler); C.1 res = IOCTL
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