From c9e3dc373beaaa78b439bc65d94f34db0c665ef0 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sat, 6 Oct 2018 19:28:16 +0300
Subject: [PATCH] mdbx-windows: more for WindowsXP support.

Change-Id: Ide34048720989fc010f48e086569e12e8c1edca1
---
 src/osal.c            | 9 +++++++++
 src/osal.h            | 4 ++--
 src/tools/wingetopt.c | 2 +-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/osal.c b/src/osal.c
index 2a037447..4dbc7f01 100644
--- a/src/osal.c
+++ b/src/osal.c
@@ -137,6 +137,15 @@ typedef struct _FILE_PROVIDER_EXTERNAL_INFO_V1 {
 #define STATUS_INVALID_DEVICE_REQUEST ((NTSTATUS)0xC0000010L)
 #endif
 
+#ifndef FILE_DEVICE_FILE_SYSTEM
+#define FILE_DEVICE_FILE_SYSTEM 0x00000009
+#endif
+
+#ifndef FSCTL_GET_EXTERNAL_BACKING
+#define FSCTL_GET_EXTERNAL_BACKING                                             \
+  CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 196, METHOD_BUFFERED, FILE_ANY_ACCESS)
+#endif
+
 #endif /* _WIN32 || _WIN64 */
 
 /*----------------------------------------------------------------------------*/
diff --git a/src/osal.h b/src/osal.h
index 0f3da8a8..c447bf44 100644
--- a/src/osal.h
+++ b/src/osal.h
@@ -649,7 +649,7 @@ static __inline uint32_t mdbx_atomic_add32(volatile uint32_t *p, uint32_t v) {
   return __sync_fetch_and_add(p, v);
 #else
 #ifdef _MSC_VER
-  return _InterlockedExchangeAdd(p, v);
+  return _InterlockedExchangeAdd((volatile long *)p, v);
 #endif
 #ifdef __APPLE__
   return OSAtomicAdd32(v, (volatile int32_t *)p);
@@ -689,7 +689,7 @@ static __inline bool mdbx_atomic_compare_and_swap32(volatile uint32_t *p,
   return __sync_bool_compare_and_swap(p, c, v);
 #else
 #ifdef _MSC_VER
-  return c == _InterlockedCompareExchange(p, v, c);
+  return c == _InterlockedCompareExchange((volatile long *)p, v, c);
 #endif
 #ifdef __APPLE__
   return c == OSAtomicCompareAndSwap32Barrier(c, v, (volatile int32_t *)p);
diff --git a/src/tools/wingetopt.c b/src/tools/wingetopt.c
index 1dd0d069..7feb223f 100644
--- a/src/tools/wingetopt.c
+++ b/src/tools/wingetopt.c
@@ -55,7 +55,7 @@ char *optarg;
 int getopt(int argc, char *const argv[], const char *opts) {
   static int sp = 1;
   int c;
-  char *cp;
+  const char *cp;
 
   if (sp == 1) {
     if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')