From: Corinna Vinschen <corinna@vinschen.de>
Date: Mon, 21 May 2007 09:11:27 +0000 (+0000)
Subject: 	* fhandler_floppy.cc (fhandler_dev_floppy::lseek): Set buf size to
X-Git-Tag: preoverlapped~130
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=b7a37e8d7cb7cbd6fc650b9b1c538a5e87032f0b;p=newlib-cygwin.git

	* fhandler_floppy.cc (fhandler_dev_floppy::lseek): Set buf size to
	sector size.  Simplify non-sector aligned case.  Handle errors from
	raw_read.
---

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 9da3832f3..f9f4aeab0 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,10 @@
+2007-05-21  Christian Franke <franke@computer.org>
+	    Corinna Vinschen  <corinna@vinschen.de>
+
+	* fhandler_floppy.cc (fhandler_dev_floppy::lseek): Set buf size to
+	sector size.  Simplify non-sector aligned case.  Handle errors from
+	raw_read.
+
 2007-05-15  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler_socket.cc (adjust_socket_file_mode): New inline function.
diff --git a/winsup/cygwin/fhandler_floppy.cc b/winsup/cygwin/fhandler_floppy.cc
index c4ebcc0ff..ee8d56b57 100644
--- a/winsup/cygwin/fhandler_floppy.cc
+++ b/winsup/cygwin/fhandler_floppy.cc
@@ -408,10 +408,10 @@ fhandler_dev_floppy::raw_write (const void *ptr, size_t len)
 _off64_t
 fhandler_dev_floppy::lseek (_off64_t offset, int whence)
 {
-  char buf[512];
+  char buf[bytes_per_sector];
   _off64_t lloffset = offset;
   LARGE_INTEGER sector_aligned_offset;
-  _off64_t bytes_left;
+  size_t bytes_left;
 
   if (whence == SEEK_END)
     {
@@ -453,9 +453,11 @@ fhandler_dev_floppy::lseek (_off64_t offset, int whence)
 
   if (bytes_left)
     {
-      size_t len = bytes_left;
-      raw_read (buf, len);
+      raw_read (buf, bytes_left);
+      if (bytes_left == (size_t) -1)
+	return -1;
     }
+
   return sector_aligned_offset.QuadPart + bytes_left;
 }