From fc672fb26c42cc18eb0729236b221943d7bf25b3 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 11 Apr 2001 19:09:53 +0000
Subject: [PATCH] * path.cc (struct symlink_info): Add extn and ext_tacked_on
 fields. (path_conv::check): Only tack on extension if a known one didn't
 already exist. (suffix_scan::has): Return pointer to known extension.
 (symlink_info::check): Record location of extension, if any.

---
 winsup/cygwin/ChangeLog |  8 ++++++++
 winsup/cygwin/path.cc   | 24 +++++++++++++++++-------
 2 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 6bed3b02c..a68c2e77f 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,11 @@
+Tue Apr 10 22:02:53 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* path.cc (struct symlink_info): Add extn and ext_tacked_on fields.
+	(path_conv::check): Only tack on extension if a known one didn't
+	already exist.
+	(suffix_scan::has): Return pointer to known extension.
+	(symlink_info::check): Record location of extension, if any.
+
 2001-04-09  Egor Duda  <deo@logos-m.ru>
 
 	* fhandler.h (class fhandler_socket): Add members and methods to
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index ec14ea847..9d2f63d54 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -94,10 +94,12 @@ struct symlink_info
 {
   char buf[3 + MAX_PATH * 3];
   char *ext_here;
+  int extn;
   char *contents;
   unsigned pflags;
   DWORD fileattr;
   int is_symlink;
+  bool ext_tacked_on;
   int error;
   symlink_info (): contents (buf + MAX_PATH + 1) {}
   int check (const char *path, const suffix_info *suffixes);
@@ -377,10 +379,11 @@ path_conv::check (const char *src, unsigned opt,
     }
 
 fillin:
-  if (sym.ext_here && !(opt & PC_SYM_CONTENTS))
+  if (sym.ext_here && *sym.ext_here && !(opt & PC_SYM_CONTENTS))
     {
-      known_suffix = strchr (this->path, '\0');
-      strcpy (known_suffix, sym.ext_here);
+      known_suffix = this->path + sym.extn;
+      if (sym.ext_tacked_on)
+	strcpy (known_suffix, sym.ext_here);
     }
 
 out:
@@ -2467,8 +2470,11 @@ suffix_scan::has (const char *in_path, const suffix_info *in_suffixes)
   suffixes = suffixes_start = in_suffixes;
 
   char *ext_here = strrchr (in_path, '.');
+  path = in_path;
+  eopath = strchr (path, '\0');
+
   if (!ext_here)
-    goto done;
+    goto noext;
 
   if (suffixes)
     {
@@ -2489,10 +2495,11 @@ suffix_scan::has (const char *in_path, const suffix_info *in_suffixes)
       suffixes = NULL;
     }
 
+ noext:
+  ext_here = eopath;
+
  done:
-  path = in_path;
-  eopath = strchr (path, '\0');
-  return eopath;
+  return ext_here;
 }
 
 int
@@ -2574,6 +2581,9 @@ symlink_info::check (const char *path, const suffix_info *suffixes)
 
   is_symlink = TRUE;
   ext_here = suffix.has (path, suffixes);
+  extn = ext_here - path;
+
+  ext_tacked_on = !*ext_here;
 
   while (suffix.next ())
     {