From 9adea5f7f7a23ef4a1231289a36a94c52347b142 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Sun, 21 Apr 2013 12:01:06 +0200
Subject: win32: add readv/writev emulation

Commit e9d8fbf (qemu-file: do not use stdio for qemu_fdopen, 2013-03-27)
introduced a usage of writev, which mingw32 does not have.  Even though
qemu_fdopen itself is not used on mingw32, the future-proof solution is
to add an implementation of it.  This is simple and similar to how we
emulate sendmsg/recvmsg in util/iov.c.

Some files include osdep.h without qemu-common.h, so move the definition
of iovec to osdep.h too, and include osdep.h from qemu-common.h
unconditionally (protection against including files when NEED_CPU_H is
defined is not needed since the removal of AREG0).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/qemu-common.h | 22 ++--------------------
 include/qemu/osdep.h  | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 20 deletions(-)

(limited to 'include')

diff --git a/include/qemu-common.h b/include/qemu-common.h
index a39cdba27f..b399d855c1 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -84,20 +84,6 @@
 # error Unknown pointer size
 #endif
 
-#ifndef CONFIG_IOVEC
-#define CONFIG_IOVEC
-struct iovec {
-    void *iov_base;
-    size_t iov_len;
-};
-/*
- * Use the same value as Linux for now.
- */
-#define IOV_MAX		1024
-#else
-#include <sys/uio.h>
-#endif
-
 typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
     GCC_FMT_ATTR(2, 3);
 
@@ -122,16 +108,12 @@ static inline char *realpath(const char *path, char *resolved_path)
 void configure_icount(const char *option);
 extern int use_icount;
 
-/* FIXME: Remove NEED_CPU_H.  */
-#ifndef NEED_CPU_H
-
 #include "qemu/osdep.h"
 #include "qemu/bswap.h"
 
-#else
-
+/* FIXME: Remove NEED_CPU_H.  */
+#ifdef NEED_CPU_H
 #include "cpu.h"
-
 #endif /* !defined(NEED_CPU_H) */
 
 /* main function, renamed */
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 8b465fdf2f..42545bcbdb 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -1,6 +1,7 @@
 #ifndef QEMU_OSDEP_H
 #define QEMU_OSDEP_H
 
+#include "config-host.h"
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdbool.h>
@@ -161,6 +162,22 @@ int qemu_close(int fd);
 int qemu_create_pidfile(const char *filename);
 int qemu_get_thread_id(void);
 
+#ifndef CONFIG_IOVEC
+struct iovec {
+    void *iov_base;
+    size_t iov_len;
+};
+/*
+ * Use the same value as Linux for now.
+ */
+#define IOV_MAX 1024
+
+ssize_t readv(int fd, const struct iovec *iov, int iov_cnt);
+ssize_t writev(int fd, const struct iovec *iov, int iov_cnt);
+#else
+#include <sys/uio.h>
+#endif
+
 #ifdef _WIN32
 static inline void qemu_timersub(const struct timeval *val1,
                                  const struct timeval *val2,
-- 
cgit v1.2.3