From: Eli Zaretskii <eliz@gnu.org>
Date: Wed, 18 Sep 2019 12:14:15 +0000 (+0300)
Subject: Fix the MS-Windows build broken by recent errno changes
X-Git-Tag: emacs-27.0.90~1551^2~7
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=7ff2eef926f933c79c3913c18f9403a4a987756b;p=emacs.git

Fix the MS-Windows build broken by recent errno changes

* src/fileio.c (file_directory_p): If the file exists, but is
not a directory, set errno to ENOTDIR, like the Posix branch
does; openp expects that.
---

diff --git a/src/fileio.c b/src/fileio.c
index 58bc6b7ee8c..53eecc31aaf 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -2961,7 +2961,10 @@ file_directory_p (Lisp_Object file)
 {
 #ifdef DOS_NT
   /* This is cheaper than 'stat'.  */
-  return faccessat (AT_FDCWD, SSDATA (file), D_OK, AT_EACCESS) == 0;
+  bool retval = faccessat (AT_FDCWD, SSDATA (file), D_OK, AT_EACCESS) == 0;
+  if (!retval && errno == EACCES)
+    errno = ENOTDIR;	/* like the non-DOS_NT branch below does */
+  return retval;
 #else
 # ifdef O_PATH
   /* Use O_PATH if available, as it avoids races and EOVERFLOW issues.  */