svn commit: r339692 - head/lib/libc/sys
Mark Johnston
markj at FreeBSD.org
Wed Oct 24 18:42:14 UTC 2018
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
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