Date: Wed, 3 Aug 2016 16:10:53 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r303717 - stable/11/lib/libc/sys Message-ID: <201608031610.u73GArc9056052@repo.freebsd.org>
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Author: brooks Date: Wed Aug 3 16:10:53 2016 New Revision: 303717 URL: https://svnweb.freebsd.org/changeset/base/303717 Log: MFC r303104, r303106: Update to reflect the fact that pipe() is a wrapper around the pipe2() system call. Reviewed by: jhb, wblock Sponsored by: DAPRA, AFRL Change wording to use function rather than system call in the description as well. Authored by: zeising Reviewed by: brooks Approved by: re (gjb) Sponsored by: DAPRA, AFRL Modified: stable/11/lib/libc/sys/pipe.2 Directory Properties: stable/11/ (props changed) Modified: stable/11/lib/libc/sys/pipe.2 ============================================================================== --- stable/11/lib/libc/sys/pipe.2 Wed Aug 3 16:08:21 2016 (r303716) +++ stable/11/lib/libc/sys/pipe.2 Wed Aug 3 16:10:53 2016 (r303717) @@ -28,7 +28,7 @@ .\" @(#)pipe.2 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd June 22, 2016 +.Dd July 20, 2016 .Dt PIPE 2 .Os .Sh NAME @@ -46,7 +46,7 @@ .Sh DESCRIPTION The .Fn pipe -system call +function creates a .Em pipe , which is an object allowing @@ -109,6 +109,18 @@ The bidirectional nature of this impleme portable to older systems, so it is recommended to use the convention for using the endpoints in the traditional manner when using a pipe in one direction. +.Sh IMPLEMENTATION NOTES +The +.Fn pipe +function calls the +.Fn pipe2 +system call. +As a result, system call traces such as those captured by +.Xr dtrace 1 +or +.Xr ktrace 1 +will show calls to +.Fn pipe2 . .Sh RETURN VALUES .Rv -std pipe .Sh ERRORS @@ -157,3 +169,10 @@ The .Fn pipe2 function appeared in .Fx 10.0 . +.Pp +The +.Fn pipe +function became a wrapper around +.Fn pipe2 +in +.Fx 11.0 .
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