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* fhandler_floppy.cc (fhandler_dev_floppy::open): Fix format. Add

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code to allow to read disk and CD/DVD devices in full length.  Explain
	why.
	(fhandler_dev_floppy::raw_read): Add current position to debug output.

	* include/sys/sched.h: New stub file to override newlib file with
	clashing definitions.
This commit is contained in:
Corinna Vinschen
2009-02-09 18:28:53 +00:00
parent 9a1d57ec13
commit 29915d8ef2
3 changed files with 50 additions and 6 deletions
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30
winsup/cygwin/fhandler_floppy.cc
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@@ -1,7 +1,8 @@
/* fhandler_floppy.cc. See fhandler.h for a description of the
fhandler classes.
Copyright 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
2009 Red Hat, Inc.
This file is part of Cygwin.
@@ -205,12 +206,26 @@ fhandler_dev_floppy::open (int flags, mode_t)
the typical tar and cpio buffer sizes, Except O_DIRECT is set, in which
case we're not buffering at all. */
devbufsiz = (flags & O_DIRECT) ? 0L : 61440L;
int ret = fhandler_dev_raw::open (flags);
int ret = fhandler_dev_raw::open (flags);
if (ret && get_drive_info (NULL))
if (ret)
{
close ();
return 0;
DWORD bytes_read;
if (get_drive_info (NULL))
{
close ();
return 0;
}
/* If we're trying to access a CD/DVD drive, or an entire disk,
make sure we're actually allowed to read *all* of the device.
This is actually documented in the MSDN CreateFile man page. */
if (get_major () != DEV_FLOPPY_MAJOR
&& (get_major () == DEV_CDROM_MAJOR || get_minor () == 0)
&& !DeviceIoControl (get_handle (), FSCTL_ALLOW_EXTENDED_DASD_IO,
NULL, 0, NULL, 0, &bytes_read, NULL))
debug_printf ("DeviceIoControl (FSCTL_ALLOW_EXTENDED_DASD_IO) "
"failed, %E");
}
return ret;
@@ -298,7 +313,8 @@ fhandler_dev_floppy::raw_read (void *ptr, size_t& ulen)
if (!bytes_to_read)
break;
debug_printf ("read %d bytes %s", bytes_to_read,
debug_printf ("read %d bytes from pos %U %s", bytes_to_read,
current_position,
len < devbufsiz ? "into buffer" : "directly");
if (!read_file (tgt, bytes_to_read, &read2, &ret))
{
@@ -344,6 +360,8 @@ fhandler_dev_floppy::raw_read (void *ptr, size_t& ulen)
bytes_to_read = len;
if (current_position + bytes_to_read >= drive_size)
bytes_to_read = drive_size - current_position;
debug_printf ("read %d bytes from pos %U directly", bytes_to_read,
current_position);
if (bytes_to_read && !read_file (p, bytes_to_read, &bytes_read, &ret))
{
if (!IS_EOM (ret))