[PATCH 06/21] osdep: provide dummy siginfo_t definition

["Daniel P. Berrangé" <berrange@redhat.com>]

Windows platforms lack sigaction and thus also lack siginfo_t. For
the convenience of later code, provide a dummy siginfo_t struct
definition when it is missing.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 include/qemu/osdep.h | 8 ++++++++
 meson.build          | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index c1ca2c127b6..fdb61d5d51e 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -635,6 +635,14 @@ void sigaction_invoke(struct sigaction *action,
                       struct qemu_signalfd_siginfo *info);
 #endif
 
+#ifndef HAVE_SIGINFO_T
+typedef struct {
+    int si_signo;
+    int si_code;
+    void *si_addr;
+} siginfo_t;
+#endif
+
 /*
  * Don't introduce new usage of this function, prefer the following
  * qemu_open/qemu_create that take an "Error **errp"
diff --git a/meson.build b/meson.build
index b383c7fceef..c6207443365 100644
--- a/meson.build
+++ b/meson.build
@@ -2709,6 +2709,8 @@ config_host_data.set('HAVE_OPTRESET',
                      cc.has_header_symbol('getopt.h', 'optreset'))
 config_host_data.set('HAVE_IPPROTO_MPTCP',
                      cc.has_header_symbol('netinet/in.h', 'IPPROTO_MPTCP'))
+config_host_data.set('HAVE_SIGINFO_T',
+                     cc.has_header_symbol('signal.h', 'siginfo_t'))
 if libaio.found()
   config_host_data.set('HAVE_IO_PREP_PWRITEV2',
                        cc.has_header_symbol('libaio.h', 'io_prep_pwritev2'))
-- 
2.56.0