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From: Mark Johnston <markj@FreeBSD.org>
Date: Wed, 24 Oct 2018 18:42:13 +0000 (UTC)
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Subject: svn commit: r339692 - head/lib/libc/sys
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Author: markj
Date: Wed Oct 24 18:42:13 2018
New Revision: 339692
URL: https://svnweb.freebsd.org/changeset/base/339692

Log:
  Clarify slightly the interaction between wait*() and pdfork().
  
  There are multiple ways to wait for any child process to return a
  status (e.g., waitpid(-1, ...), waitid(P_ALL, ...)), so don't be so
  specific.
  
  MFC after:	1 week
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/lib/libc/sys/wait.2

Modified: head/lib/libc/sys/wait.2
==============================================================================
--- head/lib/libc/sys/wait.2	Wed Oct 24 18:19:32 2018	(r339691)
+++ head/lib/libc/sys/wait.2	Wed Oct 24 18:42:13 2018	(r339692)
@@ -28,7 +28,7 @@
 .\"     @(#)wait.2	8.2 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\"
-.Dd December 1, 2017
+.Dd October 24, 2018
 .Dt WAIT 2
 .Os
 .Sh NAME
@@ -597,11 +597,11 @@ fields of
 .Fa infop
 must be checked against zero to determine if a process reported status.
 .Pp
+The
 .Fn wait
-called with -1 to wait for any child process will ignore a child that is
-referenced by a process descriptor (see
-.Xr pdfork 2 ) .
-Specific processes can still be waited on by specifying the process ID.
+family of functions will not return a child process created with
+.Xr pdfork 2
+unless specifically directed to do so by specifying its process ID.
 .Sh ERRORS
 The
 .Fn wait