From 13dd2598aae5c3fa2d42a5565a0101f9f01b3619 Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Tue, 8 Mar 2016 19:13:26 +0100 Subject: [PATCH] signalfd.2: Note that signalfd info is available in /proc/PID/fdinfo Signed-off-by: Michael Kerrisk --- man2/signalfd.2 | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/man2/signalfd.2 b/man2/signalfd.2 index f18986680..0a6ae56ce 100644 --- a/man2/signalfd.2 +++ b/man2/signalfd.2 @@ -332,6 +332,15 @@ If a signal appears in the .I mask of more than one of the file descriptors, then occurrences of that signal can be read (once) from any one of the file descriptors. + +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 +directory. +See +.BR proc (5) +for further details. +.\" .SS C library/kernel differences The underlying Linux system call requires an additional argument, .IR "size_t sizemask" ,