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System calls vs. library functions

System calls vs. library functions

Posted Aug 20, 2008 20:35 UTC (Wed) by nix (subscriber, #2304)
In reply to: System calls vs. library functions by asamardzic
Parent article: Standards, the kernel, and Postfix

Pedant point: POSIX incorporated all of SuS some years back; the result is 
called POSIX. (Confusing, I know.)


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System calls vs. library functions

Posted Aug 21, 2008 3:50 UTC (Thu) by mkerrisk (subscriber, #1978) [Link]

Pedant point: POSIX incorporated all of SuS some years back; the result is called POSIX. (Confusing, I know.)

Well, to be extrememly pedantic, the work of the Austin group consolidated earlier POSIX standards and SUSv2, to create a new standard that defines two levels of conformance: base conformance (aka POSIX.1-2001), and XSI (X/Open System Interface) conformance (aka SUSv3). So the result is called both POSIX and SUS.

System calls vs. library functions

Posted Aug 21, 2008 3:52 UTC (Thu) by mkerrisk (subscriber, #1978) [Link]

See also http://www.kernel.org/doc/man-pages/online/pages/man7/standards.7.html

System calls vs. library functions

Posted Aug 21, 2008 9:06 UTC (Thu) by nix (subscriber, #2304) [Link]

That manpage, and the posixoptions manpage it links to, are excellently done. (It is a tad
unclear, though, whether posixoptions describes the meaning of the options or whether it
instead describes what values those options have got on a Linux (glibc?) system...)


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