win32: fix implementation of access(2)

The WIN32 implementation of access(2) didn't return:

- the correct value when a directory was tested for X_OK;

- the correct error code when the target existed but execute
  permission wasn't available.

1 files changed, 5 insertions, 2 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 7568f081d..707e6a3d2 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -1142,8 +1142,11 @@ int mingw_access(const char *name, int mode)
                 }
         }
 
-        if (!mingw_stat(name, &s) && S_ISREG(s.st_mode) && (s.st_mode&S_IXUSR)) {
-                return 0;
+        if (!mingw_stat(name, &s)) {
+                if ((s.st_mode&S_IXUSR)) {
+                        return 0;
+                }
+                errno = EACCES;
         }
 
         return -1;