Microsoft POSIX subsystem


Microsoft POSIX subsystem

Microsoft POSIX subsystem is one of 3 subsystems of several operating systems from the Windows NT family (together with OS/2 and Windows subsystems).

Microsoft Windows implements only the first version of the POSIX standards, namely POSIX.1. The official code of POSIX.1 is ISO/IEC 9945-1:1990 or IEEE standard 1003-1:1990. The subsystem was included because of 1980s US federal government's requirements listed in Federal Information Processing Standard (FIPS) 151-2[1]. Versions Windows NT 3.5, Windows NT 3.51 and Windows NT 4 were certified as compliant with the FIPS 151-2.

The runtime environment of the subsystem is provided by two files: psxss.exe and psxdll.dll. A POSIX application uses psxdll.dll to communicate with the subsystem while communicating with posix.exe to provide display capabilities on the Windows desktop.

Because only the first version of POSIX (POSIX.1) is implemented, a POSIX application cannot create a thread or window, nor can it use RPC or socket. Instead of implementing the later versions of POSIX, Microsoft offers Windows Services for UNIX.

Starting with Windows XP, the POSIX subsystem is not included as part of standard Windows distributions and has been replaced by Interix.[2]

See also

References


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Look at other dictionaries:

  • POSIX — (IPAEng|ˈpɒzɪks) or Portable Operating System Interface cite web | title = POSIX | url = http://standards.ieee.org/regauth/posix/ | work = Standards | publisher = IEEE] is the collective name of a family of related standards specified by the IEEE …   Wikipedia

  • Microsoft Windows Services for UNIX — (SFU) ist ein Software Paket von Microsoft, welches ein Unix Subsystem und andere Komponenten einer Unix Umgebung nach POSIX Standard auf Windows NT (oder neuer) zur Verfügung stellt. Dieses Subsystem wird als Interix bezeichnet.… …   Deutsch Wikipedia

  • Microsoft Windows Services for UNIX — (SFU) is a software package produced by Microsoft which provides a Unix subsystem and other parts of a full Unix environment on Windows NT and its successors. The subsystem included is called Interix. Like the Microsoft POSIX subsystem in Windows …   Wikipedia

  • POSIX — es el acrónimo de Portable Operating System Interface; la X viene de UNIX como seña de identidad de la API. El término fue sugerido por Richard Stallman en respuesta a la demanda de la IEEE, que buscaba un nombre fácil de recordar. Una traducción …   Wikipedia Español

  • POSIX — Хронологическое дерево стандартов UNIX API POSIX® (англ. Portable Operating System Interface for Unix  Переносимый интерфейс опера …   Википедия

  • MicroSoft — Corporation Unternehmensform Kapitalgesellschaft ISIN …   Deutsch Wikipedia

  • Microsoft Corporation — Unternehmensform Kapitalgesellschaft ISIN …   Deutsch Wikipedia

  • Microsoft Firmengeschichte — Microsoft Corporation Unternehmensform Kapitalgesellschaft ISIN …   Deutsch Wikipedia

  • Microsoft — Corporation Rechtsform Corporation ISIN US5949181045 …   Deutsch Wikipedia

  • Microsoft Windows — Microsoft Windows …   Deutsch Wikipedia


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