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