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-rw-r--r--man2/signalfd.28
1 files changed, 8 insertions, 0 deletions
diff --git a/man2/signalfd.2 b/man2/signalfd.2
index 47eebaaa9f..b422663111 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