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[Libguestfs] [PATCH] inspect: Simplify Windows root heuristic code.



-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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>From 5776c145d411e5ae00072ecf422055f3d0bd29e2 Mon Sep 17 00:00:00 2001
From: Richard W.M. Jones <rjones redhat com>
Date: Tue, 22 Mar 2011 11:05:21 +0000
Subject: [PATCH 2/3] inspect: Simplify Windows root heuristic code.

Add special is_file_nocase and is_dir_nocase functions and
remove the duplicate checks for files and directories with
different cases.
---
 src/inspect.c |   50 ++++++++++++++++++++++++++++++++++++++------------
 1 files changed, 38 insertions(+), 12 deletions(-)

diff --git a/src/inspect.c b/src/inspect.c
index 7cf18c3..20e8806 100644
--- a/src/inspect.c
+++ b/src/inspect.c
@@ -1,5 +1,5 @@
 /* libguestfs
- * Copyright (C) 2010 Red Hat Inc.
+ * Copyright (C) 2010-2011 Red Hat Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -230,6 +230,8 @@ static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs);
 static int check_windows_software_registry (guestfs_h *g, struct inspect_fs *fs);
 static int check_windows_system_registry (guestfs_h *g, struct inspect_fs *fs);
 static char *resolve_windows_path_silently (guestfs_h *g, const char *);
+static int is_file_nocase (guestfs_h *g, const char *);
+static int is_dir_nocase (guestfs_h *g, const char *);
 static int extend_fses (guestfs_h *g);
 static int parse_unsigned_int (guestfs_h *g, const char *str);
 static int parse_unsigned_int_ignore_trailing (guestfs_h *g, const char *str);
@@ -365,17 +367,13 @@ check_filesystem (guestfs_h *g, const char *device,
            guestfs_is_dir (g, "/spool") > 0)
     fs->content = FS_CONTENT_LINUX_VAR;
   /* Windows root? */
-  else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
-           guestfs_is_file (g, "/autoexec.bat") > 0 ||
-           guestfs_is_dir (g, "/Program Files") > 0 ||
-           guestfs_is_dir (g, "/WINDOWS") > 0 ||
-           guestfs_is_dir (g, "/Windows") > 0 ||
-           guestfs_is_dir (g, "/windows") > 0 ||
-           guestfs_is_dir (g, "/WIN32") > 0 ||
-           guestfs_is_dir (g, "/Win32") > 0 ||
-           guestfs_is_dir (g, "/WINNT") > 0 ||
-           guestfs_is_file (g, "/boot.ini") > 0 ||
-           guestfs_is_file (g, "/ntldr") > 0) {
+  else if (is_file_nocase (g, "/AUTOEXEC.BAT") > 0 ||
+           is_dir_nocase (g, "/Program Files") > 0 ||
+           is_dir_nocase (g, "/WINDOWS") > 0 ||
+           is_dir_nocase (g, "/WIN32") > 0 ||
+           is_dir_nocase (g, "/WINNT") > 0 ||
+           is_file_nocase (g, "/boot.ini") > 0 ||
+           is_file_nocase (g, "/ntldr") > 0) {
     fs->is_root = 1;
     fs->content = FS_CONTENT_WINDOWS_ROOT;
     fs->format = OS_FORMAT_INSTALLED;
@@ -1662,6 +1660,34 @@ resolve_windows_path_silently (guestfs_h *g, const char *path)
 }
 
 static int
+is_file_nocase (guestfs_h *g, const char *path)
+{
+  char *p;
+  int r;
+
+  p = resolve_windows_path_silently (g, path);
+  if (!p)
+    return 0;
+  r = guestfs_is_file (g, p);
+  free (p);
+  return r > 0;
+}
+
+static int
+is_dir_nocase (guestfs_h *g, const char *path)
+{
+  char *p;
+  int r;
+
+  p = resolve_windows_path_silently (g, path);
+  if (!p)
+    return 0;
+  r = guestfs_is_dir (g, p);
+  free (p);
+  return r > 0;
+}
+
+static int
 extend_fses (guestfs_h *g)
 {
   size_t n = g->nr_fses + 1;
-- 
1.7.4.1


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