POSIX emulation
The libphoenix repository provides POSIX API enabling users to build and run portable POSIX applications. The
emulation layer is built upon Phoenix-RTOS native messaging API and a dedicated server (posixsrv).
The purpose of posixsrv is to store data that can be shared between processes, i.e.:
- keep track of file descriptors and their mapping to open files,
- manage standard IPC mechanisms: pipes, UNIX sockets,
- provide UNIX 98 pseudo-terminals,
- dispatch events for efficient
poll()-like functions
It also registers and handles special files, such as /dev/null or /dev/random.
In the current implementation, some parts of posixsrv functionality is kept inside the kernel and accessed using a set
of system calls. Future implementations will instead delegate requests directly to posixsrv.
Source code
The source code of posixsrv is available on GitHub and can be obtained using the following command:
git clone https://github.com/phoenix-rtos/phoenix-rtos-posixsrv