2007-05-07 Thomas Schwinge <tschwinge@gnu.org>

[bug #15295 --- ``Mach lets processes write to I/O ports'']

	* i386/Makefrag.am (libkernel_a_SOURCES): Add `i386/i386/io_perm.c',
	`i386/i386/io_perm.h', `i386/i386/machine_task.c', `i386/i386/task.h'
	and remove `i386/i386/io_port.h', `i386/i386/iopb.c',
	`i386/i386/iopb.h'.

	* i386/i386/io_port.h: Remove file.
	* i386/i386at/kd.c: Don't include <i386/io_port.h>.
	(vga_port_list, kd_io_device, kd_io_map_open, kd_io_map_close): Don't
	define and don't use anymore.

	* include/stddef.h: New file.

	* i386/i386/io_perm.c: Include <string.h>, <device/device_emul.h>,
	<ipc/ipc_space.h> and don't include <oskit/ds_oskit.h>.
	(io_perm_device_emulation_ops): New variable.
	(dev_open_alloc, setup_no_senders): Remove declarations.
	(convert_io_perm_to_port, convert_port_to_io_perm, io_perm_deallocate):
	Rewrite.
	(no_senders): New function.
	(i386_io_perm_create, i386_io_perm_modify): Rewrite partially, to adapt
	to the GNU Mach environment.
	* i386/i386/io_perm.h: Include <device/dev_hdr.h> and
	<ipc/ipc_types.h>.
	(io_perm, io_perm_t): New structure and accompanying type definition.
	(IO_PERM_NULL): Define.
	* i386/i386/locore.S (ktss): Move variable to...
	* i386/i386/ktss.c: ... here, make it a ``struct task_tss''.
	(ktss_init): Initialize the `task_tss' structure and the i/o permission
	bit map.
	* i386/i386/ktss.h: Adapt to that.
	* i386/i386/machine_task.c (machine_task_module_init): Adapt the `zinit'
	call to the GNU Mach environment.
	* i386/i386/mp_desc.c: Include <machine/ktss.h>.
	* i386/i386/tss.h: Include <machine/io_perm.h>.
	(task_tss): New structure, equivalent to the OSKit-Mach one.
	* i386/include/mach/i386/mach_i386.defs: Don't include
	<device/device_types.defs>.
	(device_list_t): Remove type.
	* i386/include/mach/i386/mach_i386_types.h (device_list_t): Remove type
	definition.

2007-05-07  Marcus Brinkmann  <marcus@gnu.org>

	[bug #15295 --- ``Mach lets processes write to I/O ports'']

	* i386/i386/iopb.h, i386/i386/iopb.c: Obsolete files removed.

	* i386/i386/pcb.c (switch_context): Update the I/O permission
	bitmap from stack_handoff() here (not only in stack_handoff()).

	* i386/i386/machine_task.c (machine_task_module_init): Set
	ZONE_COLLECTABLE and ZONE_EXHAUSTIBLE flags for the iopb zone.
	Requested by Roland McGrath <roland@frob.com>.

	* i386/i386/io_perm.h: New file.
	* i386/i386/io_perm.c: New file.
	* i386/i386/machine_task.c: New file.
	* i386/i386/mp_desc.h: (struct mp_desc_table): Change type of ktss to
	struct task_tss.
	(mp_ktss): Likewise for array of pointers to the struct.
	* i386/i386/mp_desc.c: Include `machine/tss.h' and `machine/io_perm.h'.
	(mp_ktss): Change type to array of struct task_tss.
	(mp_desc_init): Cast pointer to x86_tss into pointer to task_tss,
	and use size of struct task_tss instead size of struct x86_tss.
	Initialize the task_tss structure.
	* i386/i386/pcb.c: Include `stddef.h' and `machine/tss.h'.
	(iopb_create, iopb_destroy): Prototypes removed.
	(curr_ktss): Cast pointer to base_tss to pointer to struct
	task_tss.
	(switch_ktss): Always use kernel TSS.
	(update_ktss_iopb): New function.
	(stack_handoff): Call update_ktss_iopb.
	(pcb_module_init): Do not call iopb_init.
	(pcb_terminate): Do not call iopb_destroy.
	(thread_setstatus): Remove local variable tss.
	(thread_getstatus): Rewrite i386_ISA_PORT_MAP_STATE case handler.
	* i386/i386/task.h: New file.
	* i386/i386/thread.h: Do not include `i386/iopb.h'.
	(struct i386_machine_state): Remove member io_tss.
	* i386/include/mach/i386/mach_i386.defs [KERNEL_SERVER]: Include
	`machine/io_perm.h'.  Define intran, outtran and destructor.
	(io_port_t): New type.
	(io_perm_t): Likewise.
	(i386_io_port_add): Interface removed.
	(i386_io_port_remove): Likewise.
	(i386_io_port_list): Likewise.
	(i386_io_perm_create): New interface.
	(i386_io_perm_modify): Likewise.
	* i386/include/mach/i386/mach_i386_types.h [MACH_KERNEL]: Include
	`i386/io_perm.h'.
	[!MACH_KERNEL]: Define types io_port_t and io_perm_t.
	* kern/task.c (task_init): Call machine_task_module_init.
	(task_create): Call machine_task_init.
	(task_deallocate): Call machine_task_terminate.
	(task_collect_scan): Call machine_task_collect.
	* task.h: Include `machine/task.h'.
	(struct task): Add member machine.

1 files changed, 29 insertions, 0 deletions

diff --git a/include/stddef.h b/include/stddef.h
new file mode 100644
index 0000000..dd67734
--- /dev/null
+++ b/include/stddef.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2007 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Mach.
+ *
+ * GNU Mach is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any later
+ * version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _STDDEF_H_
+#define _STDDEF_H_
+
+/* From GCC's `/lib/gcc/X/X/include/stddef.h'.  */
+
+/* Offset of member MEMBER in a struct of type TYPE.  */
+#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
+
+#endif /* _STDDEF_H_ */