From bcae58d752855dd51929f6f6b1b15154b79b199e Mon Sep 17 00:00:00 2001
From: Alejandro Colomar <colomar.6.4.3@gmail.com>
Date: Fri, 18 Sep 2020 19:04:37 +0200
Subject: [PATCH] system_data_types.7: Document sigevent

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man7/system_data_types.7 | 57 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 52 insertions(+), 5 deletions(-)

diff --git a/man7/system_data_types.7 b/man7/system_data_types.7
index 6f84a026f..5bf2d77a9 100644
--- a/man7/system_data_types.7
+++ b/man7/system_data_types.7
@@ -130,6 +130,51 @@ and
 .I ssize_t
 types in this page.
 .TP
+.I sigevent
+.IP
+Include:
+.IR <signal.h> ;
+or
+.I <aio.h>
+or
+.I <mqueue.h>
+or
+.IR <time.h> .
+.IP
+.EX
+struct sigevent {
+    int             sigev_notify; /* Notification type */
+    int             sigev_signo;  /* Signal number */
+    union sigval    sigev_value;  /* Signal value */
+    void          (*sigev_notify_function)(union sigval);
+                                  /* Notification function */
+    pthread_attr_t *sigev_notify_attributes;
+                                  /* Notification attributes */
+};
+.EE
+.\".IP
+.\" FIXME: Add a description?
+.IP
+Conforming to: POSIX.1-2001 and later.
+.IP
+Notes:
+.I <aio.h>
+and
+.I <time.h>
+define
+.I sigevent
+since POSIX.1-2008.
+.IP
+See also:
+.BR timer_create (2),
+.BR getaddrinfo_a (3),
+.BR lio_listio (3),
+.BR mq_notify (3)
+.\".IP
+.\"See also the
+.\".I aiocb	FIXME
+.\"structure in this page.
+.TP
 .I sigval
 .IP
 Include:
@@ -150,12 +195,14 @@ See also:
 .BR pthread_sigqueue (3),
 .BR sigqueue (3),
 .BR sigevent (7)
-.\".IP
-.\"See also the
-.\".I sigevent	FIXME
-.\"structure and the
+.IP
+See also the
+.I sigevent
+structure
+.\"and the
 .\".I siginfo_t	FIXME
-.\"type in this page.
+.\"type
+in this page.
 .TP
 .I size_t
 .IP