Top Document: Unix - Frequently Asked Questions (6/7) [Frequent posting] Previous Document: Main Unix flavors. Next Document: Identifying your Unix flavor. See reader questions & answers on this topic! - Help others by sharing your knowledge Date: Mon Jan 21 16:59:14 EST 1995 X-Version: 2.8 6.4) Main Players and Unix Standards. The more important players in the Unix scene currently (early '95) are (corrections most welcome, these are new bytes): - Novell who bought USL (early 93) and now has the source code. - X/Open who has the branding rights to "UNIX" trademark. - OSF, both as developer of OSF/1 and Motif, and as organization overseeing COSE (OSF's new working model). OSF was reorganized in 1994 (and Sun joined), relationship with X/Open has been formalized. - IEEE with POSIX, LAN standards. - PowerOpen [IBM, Apple, Motorola, Bull, others] promoting the PowerPC. Do not confuse with graphical environment of same name. The following briefly describes the more important standards relevant to Unix. - IEEE: - 802.x (LAN) standards (LLC, ethernet, token ring, token bus) - POSIX (ISO 9945?): Portable Operating System I/F (Unix, VMS and OS/2!) (only ? have been finalized at this point) - 1003.1: library procedures (mostly system calls) -- roughly V7 except for signals and terminal I/F (1990) - 1003.2: shell and utilities - 1003.3: test methods and conformance - 1003.4: real-time: binary semaphores, process memory locking, memory-mapped files, shared memory, priority scheduling, real-time signals, clocks and timers, IPC message passing, synchronized I/O, asynchronous I/O, real-time files - 1003.5: Ada language bindings - 1003.6: security - 1003.7: system admin (incl. printing) - 1003.8: transparent file access - 1003.9: FORTRAN language bindings - 1003.10: super computing - 1003.12: protocol-independent I/Fs - 1003.13: real-time profiles - 1003.15: supercomputing batch I/Fs - 1003.16: C-language bindings (?) - 1003.17: directory services - 1003.18: POSIX standardized profile - 1003.19: FORTRAN 90 language bindings - X/Open (consortium of vendors, founded 1984): - X/Open Portability Guides (XPGn): - XPG2 (1987), strong SV influence Vol 1: commands and utilities Vol 2: system calls and libraries Vol 3: terminal I/F (curses, termio), IPC (SV), internationalization Vol 4: programming languages (C, COBOL!) Vol 5: data management (ISAM, SQL) - XPG3 (1989) adds: X11 API - XPG4 (1992) adds: XTI? 22 components - XOM series of interfaces: - XOM (X/Open Object Management) generic I/F mechanisms for following - XDS (X/Open Directory Service) - XMH (X/Open Mail ??) - XMP (X/Open Management Protocols) -- not Bull's CM API? - X/Open now has the rights to the "UNIX" trademark (late 93); - "Spec 1170" - This specification is being prepared describing a common API to which vendors wanting to use the name "UNIX" will have to comply (when test suites are available). Merge of SVID, OSF's AES and other stuff. - AT&T (is this still relevant in 1994? Who is now responsible for SVID, TLI, APLI?) - System V Interface Definition (SVID) - SVID1 (1985, SVR2) Vol 1: system calls and libraries (similar to XPG2.1) - SVID2 (1986, SVR3) Vol 1: system calls and libraries (base, kernel extensions) Vol 2: commands and utilities (base, advanced, admin, software development), terminal I/F Vol 3: terminal I/F (again), STREAMS and TLI, RFS - SVID3 (19??, SVR4) adds Vol 4: ?? &c - APIs - Transport Library Interface (TLI) - ACSE/Presentation Library Interface (APLI) - COSE (COmmon Open Software Environment) [IBM, HP, SunSoft, others]: objective is to bring different Unix platforms closer together. Initiatives in the following areas: - desktop environments - application API (aka Spec 1170 -- a single programming i/f) -- probably the more important achievement at this point: eliminates differences between SCO, AIX, Solaris, HP-UX, UnixWare. - distributed computing services (OSF's DCE and SunSoft's ONC) - object technologies (OMG's CORBA) - graphics - multimedia - systems management - PowerOpen Environment (POE) promoted by the PowerOpen association (POA). A standard for Unix-like OSs running on PowerPC chip. Defines: - an API (application programming i/f, derived from AIX, conforms to POSIX, XPG4, Motif, &c) and - an ABI (application binary i/f), a distinguishing factor from other standards such as POSIX, XPG4, &c.. Any POE-compliant system will be able to run all POE software. Key features: - based on the PowerPC architecture - hardware bus independence - system implementations can range from laptops to supercomputers - requires a multi-user, multi-tasking operating system - networking support - X windows extension, Motif - conformance tested and certified by an independent party (POA) AIX 4.1.1 will be PowerOpen compliant. MacOS isn't and won't be. [above adapted from the powerpc-faq from comp.sys.powerpc] IBM is involved in both COSE and POE. How will the two interact? User Contributions:Comment about this article, ask questions, or add new information about this topic:Top Document: Unix - Frequently Asked Questions (6/7) [Frequent posting] Previous Document: Main Unix flavors. Next Document: Identifying your Unix flavor. Part1 - Part2 - Part3 - Part4 - Part5 - Part6 - Part7 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: tmatimar@isgtec.com (Ted Timar)
Last Update March 27 2014 @ 02:12 PM
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