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diff --git a/doc/posix1003.1/preface.texi b/doc/posix1003.1/preface.texi new file mode 100644 index 0000000000..33272e47f7 --- /dev/null +++ b/doc/posix1003.1/preface.texi @@ -0,0 +1,29 @@ +@c +@c COPYRIGHT (c) 1988-2002. +@c On-Line Applications Research Corporation (OAR). +@c All rights reserved. +@c +@c $Id$ +@c + +@ifnottex +@node Preface, General, Top, Top +@end ifnottex + +@unnumbered Preface + +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 @code{getpid()} when there +can only be one process. But providing routines like @code{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. |