From 40be44e2a95cd703e49022c8f8aa0ce5b9b29ea6 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sun, 27 Feb 2011 21:46:39 +0200
Subject: [PATCH] Emulate `readlink' for DJGPP versions before 2.04.

 src/msdos.c (readlink) [DJGPP < 2.04]: New stub function.
 src/msdos.h: (readlink) [DJGPP < 2.04]: Declare prototype.
---
 src/ChangeLog |  6 ++++++
 src/msdos.c   | 12 ++++++++++++
 src/msdos.h   |  5 +++++
 3 files changed, 23 insertions(+)

diff --git a/src/ChangeLog b/src/ChangeLog
index b49b7a2d3f1..3288a79e9c6 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2011-02-27  Eli Zaretskii  <eliz@gnu.org>
+
+	* msdos.c (readlink) [DJGPP < 2.04]: New stub function.
+
+	* msdos.h: (readlink) [DJGPP < 2.04]: Declare prototype.
+
 2011-02-26  Eli Zaretskii  <eliz@gnu.org>
 
 	* s/msdos.h (HAVE_LSTAT): Define for DJGPP >= 2.04.
diff --git a/src/msdos.c b/src/msdos.c
index 8f0f6776aaa..f6ac1d32b9b 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -3922,6 +3922,18 @@ croak (char *badfunc)
  */
 int setpgrp (void) {return 0; }
 int setpriority (int x, int y, int z) { return 0; }
+
+#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 4
+ssize_t
+readlink (const char *name, char *dummy1, size_t dummy2)
+{
+  /* `access' is much faster than `stat' on MS-DOS.  */
+  if (access (name, F_OK) == 0)
+    errno = EINVAL;
+  return -1;
+}
+#endif
+
 
 #if __DJGPP__ == 2 && __DJGPP_MINOR__ < 2
 
diff --git a/src/msdos.h b/src/msdos.h
index 6b076c1722b..4bbe9b134de 100644
--- a/src/msdos.h
+++ b/src/msdos.h
@@ -40,6 +40,11 @@ void mouse_init (void);
 void mouse_on (void);
 void mouse_off (void);
 void mouse_moveto (int, int);
+
+#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 4
+int readlink (const char *, char *, size_t);
+#endif
+
 
 #ifndef HAVE_X_WINDOWS
 /* Dummy types.  */
-- 
2.39.5