* errno.cc (errmap): Map ERROR_SHARING_VIOLATION to EBUSY,

	ERROR_EOM_OVERFLOW and ERROR_NO_DATA_DETECTED to EIO.  Add mappings
	for ERROR_NO_MEDIA_IN_DRIVE, ERROR_DEVICE_REQUIRES_CLEANING and
	ERROR_DEVICE_DOOR_OPEN.
	* fhandler.h (class fhandler_dev_raw): Drop varblkop member.
	(fhandler_dev_raw::is_eom): De-virtualize.
	(fhandler_dev_raw::is_eof): Ditto.
	(class fhandler_dev_tape): Drop lasterr and dp member.  Add mt_mtx
	member.  Drop all private methods formerly used by ioctl.
	(fhandler_dev_tape::is_rewind_device): Use get_minor for clarity.
	(fhandler_dev_tape::driveno): New method.
	(fhandler_dev_tape::drive_init): New method.
	(fhandler_dev_tape::clear): Remove method.
	(fhandler_dev_tape::is_eom): Ditto.
	(fhandler_dev_tape::is_eof): Ditto.
	(fhandler_dev_tape::write_file): Ditto.
	(fhandler_dev_tape::read_file): Ditto.
	(fhandler_dev_tape::_lock): New method.
	(fhandler_dev_tape::unlock): New method.
	(fhandler_dev_tape::raw_read): New method.
	(fhandler_dev_tape::raw_write): New method.
	* fhandler_raw.cc (fhandler_dev_raw::is_eom): New method.
	(fhandler_dev_raw::is_eof): New method.
	(fhandler_dev_raw::open): Allow setting write through option by
	using the O_TEXT flag as ... flag.
	(fhandler_dev_raw::writebuf): Remove usage of varblkop and other
	tape specific code.
	(fhandler_dev_raw::raw_read): Ditto.
	(fhandler_dev_raw::dup): Ditto.
	* fhandler_tape.cc: Rewrite tape operations entirely.  Implement
	new tape driver classes mtinfo, mtinfo_drive and mtinfo_part.
	Reduce fhandler_dev_tape methods to mostly just calling appropriate
	mtinfo_drive methods.
	(mtinfo_init): New function adding the mtinfo shared memory area.
	* mtinfo.h: New file, containing the definition of the new tape
	driver classes.
	* shared.cc: Include mtinfo.h.
	(offsets): Add entry for mtinfo shared memory area.
	(memory_init): Call mtinfo_init.
	* shared_info.h (shared_locations): Add SH_MTINFO shared location.
	* include/cygwin/mtio.h: Change and add various comments.  Add GMT_xxx
	macros for new generic flags.  Add MT_ST_xxx bitfield definitions
	for MTSETDRVBUFFER ioctl.
	* include/cygwin/version.h: Bump API minor version number.

1 files changed, 8 insertions, 0 deletions

diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc
index 9a91a1c..42beb54 100644
--- a/winsup/cygwin/shared.cc
+++ b/winsup/cygwin/shared.cc
@@ -26,6 +26,7 @@ details. */
 #include "registry.h"
 #include "cygwin_version.h"
 #include "child_info.h"
+#include "mtinfo.h"
 
 shared_info NO_COPY *cygwin_shared;
 user_info NO_COPY *user_shared;
@@ -62,7 +63,13 @@ static char *offsets[] =
     + pround (sizeof (shared_info))
     + pround (sizeof (user_info))
     + pround (sizeof (console_state))
+    + pround (sizeof (_pinfo)),
+  (char *) cygwin_shared_address
+    + pround (sizeof (shared_info))
+    + pround (sizeof (user_info))
+    + pround (sizeof (console_state))
     + pround (sizeof (_pinfo))
+    + pround (sizeof (mtinfo))
 };
 
 void * __stdcall
@@ -243,6 +250,7 @@ memory_init ()
   ProtectHandleINH (cygheap->shared_h);
 
   user_shared_initialize (false);
+  mtinfo_init ();
 }
 
 unsigned