; * src/w32.c (sys_open): Set errno to EISDIR if opening a directory.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/w32.c b/src/w32.c
index a1b34e4103b..6d0b178e978 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -4652,6 +4652,14 @@ sys_open (const char * path, int oflag, int mode)
         res = _wopen (mpath_w, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode);
       if (res < 0)
         res = _wopen (mpath_w, oflag | _O_NOINHERIT, mode);
+      if (res < 0 && errno == EACCES)
+        {
+          DWORD attributes = GetFileAttributesW (mpath_w);
+
+          if (attributes != INVALID_FILE_ATTRIBUTES
+              && (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
+            errno = EISDIR;
+        }
     }
   else
     {
@@ -4662,6 +4670,14 @@ sys_open (const char * path, int oflag, int mode)
         res = _open (mpath_a, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode);
       if (res < 0)
         res = _open (mpath_a, oflag | _O_NOINHERIT, mode);
+      if (res < 0 && errno == EACCES)
+        {
+          DWORD attributes = GetFileAttributesA (mpath_a);
+
+          if (attributes != INVALID_FILE_ATTRIBUTES
+              && (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
+            errno = EISDIR;
+        }
     }
 
   return res;