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Topic: POSIX


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In the News (Sun 23 Jun 19)

  
  POSIX - Wikipedia, the free encyclopedia
POSIX is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system.
The term POSIX was suggested by Richard Stallman (not as a compliment) in response to an IEEE request for a memorable name; before that the standards effort was called IEEE-IX.
POSIX also defines a standard threading library API which is supported by most modern operating systems.
en.wikipedia.org /wiki/POSIX   (421 words)

  
 Embedded.com - POSIX in Real-Time
POSIX 1003.1a defines the interface to basic operating system functions, and was the first to be adopted in 1990.1,[6] Real-time extensions are defined in the standards 1003.1b, 1003.1d, 1003.1j, and 1003.21.
In POSIX, threads are implemented in an independent specification, which means that their specification is independent of the other real-time features.1,[14] Because of this, a number of features from the real-time specification are carried over to the thread specification.
Table 3 shows the level of compliance to POSIX 1003.1a and the 3.1 release is compliant with all three standards.
www.embedded.com /story/OEG20010312S0073   (5470 words)

  
 An Introduction to Nucleus POSIX   (Site not responding. Last check: 2007-10-22)
POSIX is a collection of standards that acts as an OS (Operating System) interface, allowing an application to be source-code portable from one operating system to another.
POSIX is supported on a large number of desktop and embedded operating systems.
The POSIX specification is based on efforts from small community groups, vendors, application writers and government representatives working towards a standardized set of system interfaces.
www.mentor.com /products/embedded_software/techpubs/mentorpaper_25255.cfm?redironce=1&   (243 words)

  
 What is POSIX?
ICI came to LynxOS for its POSIX conformance after an earlier project team was unable to port one of its Solaris™-based military software projects to a non-POSIX conformant operating system (VxWorks®;).
POSIX support assures code portability between systems and is increasingly mandated for commercial applications and government contracts.
POSIX conformance means that the POSIX.1 standard is supported in its entirety.
www.lynuxworks.com /products/posix/posix.php3   (411 words)

  
 Applications POSIX.1 conformance testing
POSIX was designed as a standard environment to enable the portability of applications software and to some extent people.
The core of the POSIX checker is driven by the requirements given in the C and POSIX.1 standards.
The POSIX checker was designed to detect and flag all undefined, implementation defined and unspecified constructs as well as all constraint errors, syntax errors and exceeding minimum limits; both at compile, link and runtime.
www.knosof.co.uk /poschk.html   (3967 words)

  
 POSIX threads explained
POSIX (Portable Operating System Interface) threads are a great way to increase the responsiveness and performance of your code.
POSIX threads don't need to make expensive and complicated long-distance calls because all our threads happen to live in the same house.
This lack of genealogy has one major implication: if you want to wait for a thread to terminate, you need to specify which one you are waiting for by passing the proper tid to pthread_join().
www.ibm.com /developerworks/library/l-posix1.html   (2619 words)

  
 POSIX Scanner   (Site not responding. Last check: 2007-10-22)
The POSIX Scanner toolkit is useful to analyze an applicaton you may want to port to the HP3000.
The POSIX Scanner toolkit is implemented as shell scripts and is usually installed on a UNIX system, typically HP-UX, but doesn't have to be; only a system where lint (to scan C sources) or nm (to scan executables) is found.
The POSIX Scanner collection phase for C sources is executed with the pscollcsrc script; it calls lint with the desired options.
jazz.external.hp.com /src/ps   (2008 words)

  
 ActivePerl 5.8 - Online Docs : POSIX
The POSIX module permits you to access all (or nearly all) the standard POSIX 1003.1 identifiers.
The POSIX module is probably the most complex Perl module supplied with the standard distribution.
That means you can currently successfully say ``use POSIX'', and then later in your program you find that your vendor has been lax and there's no usable ICANON macro after all.
aspn.activestate.com /ASPN/docs/ActivePerl/5.8/lib/POSIX.html   (2805 words)

  
 POSIX.1 FAQ
The term POSIX was originally used as a synonym for IEEE Std 1003.1-1988.
Since the material contained in the existing POSIX 1003.1 and POSIX 1003.2 standards is merged into the revision, POSIX 1003.1-1990 and its amendments, and POSIX 1003.2-1992 and its amendments were administratively withdrawn by the IEEE.
In 1999 the decision was taken to commence the first major revision to the core base standard in ten years, including a merger with the 1003.2 standards for Shell and Utilities which had been a separate standard up to this point.
www.opengroup.org /austin/papers/posix_faq.html   (2487 words)

  
 What is POSIX?   (Site not responding. Last check: 2007-10-22)
POSIX stands for Portable Operating System Interface, and is an IEEE standard designed to facilitate application portability.
POSIX is an attempt by a consortium of vendors to create a single standard version of UNIX.
Hewlett-Packard is incorporating POSIX into version 5.0 of its MPE/iX proprietary operating system and into version 10.0 of HP/UX (its UNIX).
www.robelle.com /smugbook/posix.html   (149 words)

  
 POSIX Option Groups   (Site not responding. Last check: 2007-10-22)
POSIX message queues are used, similar to the SysV message queues, to pass information between different threads and/or processes.
POSIX shared memory could theoretically be implemented without special kernel support but the implementation wouldn't be optimized and it would, depending on the setup, be a security problem.
POSIX tracing is a mechanism to collect information about a running process and eventually all the children.
people.redhat.com /~drepper/posix-option-groups.html   (5024 words)

  
 POSIX - Waikato Linux Users Group
POSIX is a large (some might even say unwieldy) standard (officially IEEE Standard 1003) specifying things such as the behaviour (arguments, etc) of standard programs and utilities that must exist on a system and C library functions.
Neither method is a POSIX standard; the POSIX.1 committee had a lot of disagreement in this area.
Note that the Linux kernel itself is not a full POSIX system, because a full system includes things like awk(1) and vi(1).
www.wlug.org.nz /POSIX   (606 words)

  
 POSIX Features
In the basic POSIX signals implementation, a particular signal is only received once by a process.
POSIX real-time signals include a value that is allocated to the receiver of the signal upon reception by
POSIX message queues can be shared between user and supervisor processes.
www.jaluna.com /doc/c5/html/Overview/x5408.html   (479 words)

  
 USENIX ;login: - June 2000 The POSIX Bookshelf   (Site not responding. Last check: 2007-10-22)
This is the second in a series of articles that will provide you with a list of published sources of information about the POSIX family of standards.
POSIX Programmer's Guide: Writing Portable UNIX Programs with the POSIX.1 Standard, by Donald A. Lewine, O'Reilly and Associates, April 1991, ISBN 0-93717-573-0.
O'Reilly and Associates also has a Web-based course, "Introduction to POSIX Threads." Information on this course is available at .
www.usenix.org /publications/login/standards/39.POSIX.html   (256 words)

  
 Bash Reference Manual: Bash POSIX Mode   (Site not responding. Last check: 2007-10-22)
POSIX 1003.2 `special' builtins are found before shell functions during command lookup.
Assignment statements preceding POSIX 1003.2 special builtins persist in the shell environment after the builtin completes.
There is other POSIX 1003.2 behavior that Bash does not implement.
www.faqs.org /docs/bashman/bashref_76.html   (626 words)

  
 PASC SEC SD11: PASC Status
This report provides information related to balloting of POSIX projects and is provided as part of the responsibility of the PASC Balloting Chair.
POSIX Projects and Status and in Summary of Balloting Activity.
Both POSIX drafts and completed POSIX standards can be obtained from the either the IEEE Standards Department or from the IEEE Computer Society.
www.pasc.org /standing/sd11.html   (1986 words)

  
 POSIX Threads
POSIX implementations are, not surprisingly, the emerging standard on Unix systems.
You will often see POSIX threads referred to as POSIX.1c threads, since 1003.1c is the section of the POSIX standard that deals with threads.
DCE threads are based on draft 4 (an early draft) of the POSIX threads standard (which was originally named 1003.4a, and became 1003.1c upon standardisation).
www.humanfactor.com /pthreads/posix-threads.html   (672 words)

  
 oreilly.com -- Online Catalog: POSIX Programmers Guide
Most UNIX systems today are POSIX compliant because the federal government requires it for its purchases.
POSIX and Standard C, including features and portability pitfalls.
Posix texts will be written, and Posix reference manuals will be produced, but it is rare to find such an interesting compromise between the two." --Ed Gordon, BDataSystems, IEEE Software Magazine
www.oreilly.com /catalog/posix   (402 words)

  
 IEEE POSIX┬« Certification Authority
NIST Validation of POSIX Certifications This is the final listing of Testing Laboratories and Validated Products from the NIST POSIX Testing Program, dated December 31, 1997.  It is provided for HISTORICAL PURPOSES ONLY.  The NIST POSIX Testing Program ended on December 31, 1997 and no longer has accredited laboratories or validates test results.
IEEE POSIX®: Testing Policy - General Information This document is intended to inform Government agencies, industry, standards development bodies, and other interested organizations of the policy and procedures related to IEEE validated POSIX conformance testing.
IEEE POSIX®: Testing Policy - Certificate of Validation Requirements for FIPS 151-2 This document presents information specific to conformance testing and Certificate of Validation requirements for the Federal Information Processing Standards Publication 151-2.
standards.ieee.org /regauth/posix   (283 words)

  
 OSDL and Bull Cooperate on Open Source POSIX Test Suite
POSIX is a widely-used standard of the Institute of Electrical and Electronics Engineers (IEEE) that promotes portability among operating systems, primarily UNIX operating systems such as AIX, HP-UX and Solaris.
Source code for both the Open POSIX Test Suite, and for the OSDL STP (under GPL license), is available for download on the Web.
Information on the Open POSIX Test Suite project is available at: http://posixtest.sourceforge.net.
www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/12-02-2004/0002560833&EDATE=   (667 words)

  
 .:: POSIX Threading and Synchronous Wrappers - By Arash Partow ::.
The POSIX Threading and Synchronous Wrappers are a simple set of C++ classes that act as wrappers for the POSIX threading and synchronous API.
The main problem is that if the POSIX Read-Write Mutex is used to lock a blocking resource and the resource itself is locked either via system fault or otherwise, the threads in the pending queues of the POSIX Read-Write Mutex may not be able to adequaetly recover.
Free use of the POSIX Threading and Synchronous Wrappers is permitted under the guidelines and in accordance with the most current version of the "Common Public License."
www.partow.net /programming/posixsynchwrapper   (1052 words)

  
 APE — The ANSI/POSIX Environment   (Site not responding. Last check: 2007-10-22)
The C and POSIX standards require that certain symbols be defined in headers.
They also require that certain other classes of symbols not be defined in the headers, and specify certain other symbols that may be defined in headers at the discretion of the implementation.
POSIX defines feature test macros, which are preprocessor symbols beginning with an underscore and then a capital letter; if the program
plan9.bell-labs.com /sys/doc/ape.html   (1298 words)

  
 Summary about Posix.1e
Existing POSIX security functionality is inadequate for an increasing number of situations and applications.
Posix.1e is a standards paper describing security extensions to Posix and surely better than nothing when it comes to security.
If the security extensions for Posix provide you with some mechanisms, which limit the damage until you fix a security hole, it is a clear advantage.
wt.xpilot.org /publications/posix.1e   (735 words)

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