* fhandler_disk_file.cc (fhandler_disk_file::readdir): Fix inode number

	evaluation for faked "." entry.

	* mount.cc (fs_info::update): Move setting of is_cdrom after checking
	for caseinsensitivity.  Recognize UDF in is_cdrom case and set
	caseinsensitive flag according to UDF brokenness determined by OS.
	Add comment to explain why.
	* mount.h (class fs_info): Add is_udf status flag.
	* path.cc (symlink_info::check): Add workaround for UDF bug in
	terms of casesensitivity on certain OSes.
	* wincap.h (wincaps::has_broken_udf): New element.
	(wincaps::has_broken_udf): New element

1 files changed, 27 insertions, 1 deletions

diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index aa635103d..ae01109a1 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -2140,6 +2140,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt,
       NTSTATUS status;
       IO_STATUS_BLOCK io;
       bool no_ea = false;
+      bool fs_update_called = false;
 
       error = 0;
       get_nt_native_path (suffix.path, upath);
@@ -2179,6 +2180,30 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt,
 			       FILE_OPEN_REPARSE_POINT
 			       | FILE_OPEN_FOR_BACKUP_INTENT);
 	}
+      if (status == STATUS_OBJECT_NAME_NOT_FOUND && ci_flag == 0
+	  && wincap.has_broken_udf ())
+        {
+	  /* On NT 5.x UDF is broken (at least) in terms of case sensitivity.
+	     When trying to open a file case sensitive, the file appears to be
+	     non-existant.  Another bug is described in fs_info::update. */
+	  attr.Attributes = OBJ_CASE_INSENSITIVE;
+	  status = NtOpenFile (&h, READ_CONTROL | FILE_READ_ATTRIBUTES,
+			       &attr, &io, FILE_SHARE_VALID_FLAGS,
+			       FILE_OPEN_REPARSE_POINT
+			       | FILE_OPEN_FOR_BACKUP_INTENT);
+	  attr.Attributes = ci_flag;
+	  if (NT_SUCCESS (status))
+	    {
+	      fs.update (&upath, h);
+	      if (fs.is_udf ())
+		fs_update_called = true;
+	      else
+	      	{
+		  NtClose (h);
+		  status = STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+	    }
+	}
       if (NT_SUCCESS (status)
 	  && NT_SUCCESS (status
 			 = NtQueryInformationFile (h, &io, &fbi, sizeof fbi,
@@ -2271,7 +2296,8 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt,
 
       /* Check file system while we're having the file open anyway.
 	 This speeds up path_conv noticably (~10%). */
-      fs.update (&upath, h);
+      if (!fs_update_called)
+	fs.update (&upath, h);
 
       ext_tacked_on = !!*ext_here;