From 20a37132215bd71fdebdd5b64f73debc038a08f3 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Wed, 25 Sep 2019 16:16:58 +0200
Subject: [PATCH] pidfd_open.2: Further enhancements to fork() + pidfd_open()
 text

Christian noted that SA_NOCLDWAIT also matters in this scenario.

Reported-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/pidfd_open.2 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/man2/pidfd_open.2 b/man2/pidfd_open.2
index e8ba3769a..8a4a7aafa 100644
--- a/man2/pidfd_open.2
+++ b/man2/pidfd_open.2
@@ -118,6 +118,15 @@ has not been explicitly set to
 .BR SIG_IGN
 (see
 .BR sigaction (2));
+.IP *
+the
+.BR SA_NOCLDSTOP
+flag was not specified while establishing a handler for
+.BR SIGCHLD
+or while setting the disposition of that signal to
+.BR SIG_DFL
+(see
+.BR sigaction (2));
 and
 .IP *
 the zombie process was not reaped elsewhere in the program