# HG changeset patch
# User Sergey Kandaurov <pluknet@nginx.com>
# Date 1548686011 0
# Node ID 7f035fd1ec7b4b3b82d973f9b121ded173aea7aa
# Parent  f56a4c91b303c8e4fa6a0357b8d709746ce6ed7e
Fixed portability issues with union sigval.

AIO support in nginx was originally developed against FreeBSD versions 4-6,
where the sival_ptr field was named as sigval_ptr (seemingly by mistake[1]),
which made nginx use the only name available then.  The standard-complaint
name was restored in 2005 (first appeared in FreeBSD 7.0, 2008), retaining
compatibility with previous versions[2][3].  In DragonFly, similar changes
were committed in 2009[4], with backward compatibility recently removed[5].

The change switches to the standard name, retaining compatibility with old
FreeBSD versions.

[1] https://svnweb.freebsd.org/changeset/base/48621
[2] https://svnweb.freebsd.org/changeset/base/152029
[3] https://svnweb.freebsd.org/changeset/base/174003
[4] https://gitweb.dragonflybsd.org/dragonfly.git/commit/3693401
[5] https://gitweb.dragonflybsd.org/dragonfly.git/commit/7875042

diff --git a/src/os/unix/ngx_file_aio_read.c b/src/os/unix/ngx_file_aio_read.c
--- a/src/os/unix/ngx_file_aio_read.c
+++ b/src/os/unix/ngx_file_aio_read.c
@@ -110,7 +110,7 @@ ngx_file_aio_read(ngx_file_t *file, u_ch
 #if (NGX_HAVE_KQUEUE)
     aio->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue;
     aio->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
-    aio->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev;
+    aio->aiocb.aio_sigevent.sigev_value.sival_ptr = ev;
 #endif
     ev->handler = ngx_file_aio_event_handler;
 
diff --git a/src/os/unix/ngx_freebsd_config.h b/src/os/unix/ngx_freebsd_config.h
--- a/src/os/unix/ngx_freebsd_config.h
+++ b/src/os/unix/ngx_freebsd_config.h
@@ -89,8 +89,14 @@
 
 
 #if (NGX_HAVE_FILE_AIO)
+
 #include <aio.h>
 typedef struct aiocb  ngx_aiocb_t;
+
+#if (__FreeBSD_version < 700005 && !defined __DragonFly__)
+#define sival_ptr     sigval_ptr
+#endif
+
 #endif