RTEMS POSIX 1003.1 Compliance Guide
This document lists the functions, constant, macros, feature flags, and types defined in the POSIX 1003.1 standard. Each section in this document corresponds to a section in the 1003.1 standard and the implementation status of the items required by the standard are listed.
RTEMS supports a number of POSIX process, user, and group oriented
routines in what is referred to as a "SUSP" (Single-User, Single
Process) manner. RTEMS supports a single process, multithreaded
POSIX 1003.1b environment. In a pure world, there would be
no reason to even include routines like getpid() when there
can only be one process. But providing routines like getpid()
and making them work in a sensible fashion for an embedded environment
while not returning ENOSYS (for not implemented) makes it significantly
easier to port code from a UNIX environment without modifying it.
RTEMS POSIX 1003.1 Compliance Guide
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