From 07a5f3db57edd66a23f3faf047c81508acfd1cf8 Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Wed, 15 Mar 2017 08:30:12 +0100 Subject: [PATCH] signalfd.2: SIGKILL and SIGSTOP are silently ignored in 'mask' Signed-off-by: Michael Kerrisk --- man2/signalfd.2 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/man2/signalfd.2 b/man2/signalfd.2 index 47eebaaa9..b42266311 100644 --- a/man2/signalfd.2 +++ b/man2/signalfd.2 @@ -335,6 +335,14 @@ If a signal appears in the of more than one of the file descriptors, then occurrences of that signal can be read (once) from any one of the file descriptors. +Attempts to include +.B SIGKILL +and +.B SIGSTOP +in +.I mask +are silently ignored. + The signal mask employed by a signalfd file descriptor can be viewed via the entry for the corresponding file descriptor in the process's .IR /proc/[pid]/fdinfo