diff --git a/mingw.c b/mingw.c
index c65c62af..6d889ab3 100644
--- a/mingw.c
+++ b/mingw.c
@@ -231,6 +231,11 @@ int windows_stat(const char* file, struct windows_stat* st)
 	return 0;
 }
 
+int windows_access(const char* file, int mode)
+{
+	return _waccess(u8tou16(file), mode);
+}
+
 int stat_inode(const char* file, struct windows_stat* st)
 {
 	BY_HANDLE_FILE_INFORMATION info;
@@ -313,7 +318,17 @@ FILE* windows_fopen(const char* file, const char* mode)
 
 int windows_open(const char* file, int flags, ...)
 {
-	return _wopen(u8tou16(file), flags);
+	va_list args;
+	int ret;
+
+	va_start(args, flags);
+	if ((flags & O_CREAT) != 0)
+		ret = _wopen(u8tou16(file), flags, va_arg(args, int));
+	else
+		ret = _wopen(u8tou16(file), flags);
+	va_end(args);
+
+	return ret;
 }
 
 windows_dir* windows_opendir(const char* dir)
diff --git a/mingw.h b/mingw.h
index 9cb490c0..8029bf18 100644
--- a/mingw.h
+++ b/mingw.h
@@ -32,6 +32,7 @@
 #define fopen windows_fopen
 #define open windows_open
 #define stat windows_stat
+#define access windows_access
 #define off_t off64_t
 #define lseek lseek64
 #define fstat windows_fstat
@@ -68,6 +69,11 @@ int windows_fstat(int fd, struct windows_stat* st);
  */
 int windows_stat(const char* file, struct windows_stat* st);
 
+/**
+ * Like the C access().
+ */
+int windows_access(const char* file, int mode);
+
 /**
  * Like the C stat() with inode information.
  * It doesn't work for all kind of files and directories. For example "\System Volume Information" cannot be opened.