cyanogenmod / android_external_libselinux Goto Github PK
View Code? Open in Web Editor NEWLicense: Other
License: Other
This directory contains a small port of libselinux for Android. It was originally forked in mid-2011, circa libselinux 2.1.0. Some changes have been cherry-picked from the upstream libselinux. Upstream git repository is https://github.com/SELinuxProject/selinux (libselinux subdirectory) and official releases are available from https://github.com/SELinuxProject/selinux/wiki/Releases. This fork differs from upstream libselinux in at least the following ways: * Dependencies on glibc-specific features have been removed/replaced in order to work with bionic, * Legacy code and compatibility interfaces have been removed, * Many interfaces, functions, and files are omitted since they are unused in Android, * The python bindings are omitted since they are unused in Android, * The setrans (context translation) support has been removed since there is no need for MLS label translation in Android and the support imposes extra overhead on calls passing security contexts, * The SELinux policy files are all located in / rather than under /etc/selinux since /etc is not available in Android until /system is mounted and use fixed paths, not dependent on /etc/selinux/config, * The kernel policy file (sepolicy in Android, policy.N in Linux) does not include a version suffix since Android does not need to support booting multiple kernels, * The policy loading logic does not support automatic downgrading of the kernel policy file to a version known to the kernel, since this requires libsepol on the device and is only needed to support mixing and matching kernels and userspace easily, * The selabel interface and label_file backend have been extended to support label-by-symlink and partial matching support for use by ueventd in labeling device nodes based on stable symlink names and by init for optimizing its restorecon_recursive of /sys, * Since the fork, upstream libselinux has switched the label_file backend to use a binary version of the file_contexts file (file_contexts.bin) that contains precompiled versions of the pcre regexes. This reduces the time to load the file_contexts configuration, which in Linux can be significant due to the large number of entries (> 5000). As Android has far fewer entries (~400), this has not yet seemed necessary. * restorecon functionality, including recursive restorecon, has been fully implemented within new libselinux functions, along with optimizations to prune the tree walk if no change has occurred in file_contexts since the last restorecon, * Support for new Android-specific SELinux configuration files, such as seapp_contexts, property_contexts, and service_contexts, has been added. New files added for Android: * libselinux/include/selinux/android.h * libselinux/src/android.c * libselinux/src/label_android_property.c (later added upstream)
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.