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Clarify slightly the interaction between wait*() and pdfork().

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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
This commit is contained in:
Mark Johnston 2018-10-24 18:42:13 +00:00
parent 17fbf3cf34
commit b8e4cdda35
1 changed files with 5 additions and 5 deletions
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10
lib/libc/sys/wait.2
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@ -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