From f00bc469e2a13b2a966a51de7dc3c094829a6ea6 Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Wed, 28 Apr 2010 15:35:52 +0000
Subject: [PATCH] 	* mount.cc (compare_flags): New function. 
 (read_flags): Replace loop with bsearch.  Simplify error check.

---
 winsup/cygwin/ChangeLog |  5 +++++
 winsup/cygwin/mount.cc  | 40 ++++++++++++++++++++++++----------------
 2 files changed, 29 insertions(+), 16 deletions(-)

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 5a13b93f7..f4465b6ea 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2010-04-28  Corinna Vinschen  <corinna@vinschen.de>
+
+	* mount.cc (compare_flags): New function.
+	(read_flags): Replace loop with bsearch.  Simplify error check.
+
 2010-04-28  Corinna Vinschen  <corinna@vinschen.de>
 
 	* include/cygwin/version.h: Bump API minor version.
diff --git a/winsup/cygwin/mount.cc b/winsup/cygwin/mount.cc
index ee9c94f19..528c8b65a 100644
--- a/winsup/cygwin/mount.cc
+++ b/winsup/cygwin/mount.cc
@@ -944,9 +944,20 @@ struct opt
   {"user", MOUNT_SYSTEM, 1}
 };
 
+static int
+compare_flags (const void *a, const void *b)
+{
+  const opt *oa = (const opt *) a;
+  const opt *ob = (const opt *) b;
+
+  return strcmp (oa->name, ob->name);
+}
+
 static bool
 read_flags (char *options, unsigned &flags)
 {
+  opt key;
+
   while (*options)
     {
       char *p = strchr (options, ',');
@@ -954,22 +965,19 @@ read_flags (char *options, unsigned &flags)
 	*p++ = '\0';
       else
 	p = strchr (options, '\0');
-
-      for (opt *o = oopts;
-	   o < (oopts + (sizeof (oopts) / sizeof (oopts[0])));
-	   o++)
-	if (strcmp (options, o->name) == 0)
-	  {
-	    if (o->clear)
-	      flags &= ~o->val;
-	    else
-	      flags |= o->val;
-	    goto gotit;
-	  }
-      system_printf ("invalid fstab option - '%s'", options);
-      return false;
-
-    gotit:
+      
+      key.name = options;
+      opt *o = (opt *) bsearch (&key, oopts, sizeof oopts / sizeof (opt),
+				sizeof (opt), compare_flags);
+      if (!o)
+	{
+	  system_printf ("invalid fstab option - '%s'", options);
+	  return false;
+	}
+      if (o->clear)
+	flags &= ~o->val;
+      else
+	flags |= o->val;
       options = p;
     }
   return true;