Blame src/process/ntapi_tt_fork_v2.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2017  Z. Gilboa                 */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_atomic.h>
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#include <ntapi/nt_status.h>
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#include <ntapi/nt_object.h>
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#include <ntapi/nt_memory.h>
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#include <ntapi/nt_thread.h>
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#include <ntapi/nt_process.h>
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#include <ntapi/nt_sync.h>
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#include <ntapi/nt_string.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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static intptr_t __tt_fork_cancel(void * hprocess,int32_t status)
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{
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	__ntapi->zw_terminate_process(hprocess, status);
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	__ntapi->zw_close(hprocess);
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	return (intptr_t)(-1);
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}
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static intptr_t __tt_fork_impl_v2(
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	__out	void **	hprocess,
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	__out	void **	hthread)
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{
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	int32_t			status;
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	void **			hport_session;
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	nt_object_attributes	oa_process;
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	nt_object_attributes	oa_thread;
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	nt_create_process_info	process_info;
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	nt_cid			cid;
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	nt_sec_img_inf		sec_img_inf;
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	nt_timeout		timeout;
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	ntapi_internals *	__internals;
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	struct {
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		size_t				size_in_bytes;
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		nt_create_process_ext_param	process_info;
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		nt_create_process_ext_param	section_info;
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	} ext_params;
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	oa_process.len		= sizeof(nt_object_attributes);
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	oa_process.root_dir	= 0;
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	oa_process.obj_name	= 0;
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	oa_process.obj_attr	= 0;
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	oa_process.sec_desc	= 0;
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	oa_process.sec_qos	= 0;
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	oa_thread.len		= sizeof(nt_object_attributes);
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	oa_thread.root_dir	= 0;
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	oa_thread.obj_name	= 0;
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	oa_thread.obj_attr	= 0;
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	oa_thread.sec_desc	= 0;
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	oa_thread.sec_qos	= 0;
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	__ntapi->tt_aligned_block_memset(
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		&process_info,0,sizeof(process_info));
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	process_info.size			= sizeof(process_info);
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	process_info.state			= NT_PROCESS_CREATE_INITIAL_STATE;
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	process_info.init_state.init_flags	= NT_PROCESS_CREATE_FLAGS_NO_OBJECT_SYNC;
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	__ntapi->tt_aligned_block_memset(&ext_params,0,sizeof(ext_params));
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	__ntapi->tt_aligned_block_memset(&cid,0,sizeof(cid));
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	__ntapi->tt_aligned_block_memset(&sec_img_inf,0,sizeof(sec_img_inf));
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	ext_params.size_in_bytes = sizeof(ext_params);
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	ext_params.process_info.ext_param_type	= NT_CREATE_PROCESS_EXT_PARAM_GET_CLIENT_ID;
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	ext_params.process_info.ext_param_size	= sizeof(cid);
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	ext_params.process_info.ext_param_addr	= &cid;
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	ext_params.section_info.ext_param_type	= NT_CREATE_PROCESS_EXT_PARAM_GET_SECTION_IMAGE_INFO;
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	ext_params.section_info.ext_param_size	= sizeof(sec_img_inf);
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	ext_params.section_info.ext_param_addr	= &sec_img_inf;
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	/* [thou shalt remember the single step paradox] */
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	status = __ntapi->zw_create_user_process(
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		hprocess,
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		hthread,
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		NT_PROCESS_ALL_ACCESS,
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		NT_THREAD_ALL_ACCESS,
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		&oa_process,
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		&oa_thread,
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		NT_PROCESS_CREATE_FLAGS_INHERIT_HANDLES,
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		NT_PROCESS_CREATE_FLAGS_CREATE_THREAD_SUSPENDED,
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		(nt_process_parameters *)0,
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		&process_info,
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		(nt_create_process_ext_params *)&ext_params);
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	if (status == NT_STATUS_PROCESS_CLONED)
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		return 0;
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	else if (status)
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		return (intptr_t)(-1);
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	__internals	= __ntapi_internals();
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	hport_session	= &__internals->hport_tty_session;
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	timeout.quad	= (-1) * 10 * 1000 * __NT_FORK_CHILD_WAIT_MILLISEC;
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	if (hport_session && *hport_session)
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		if ((status = __ntapi->tty_client_process_register(
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				*hport_session,
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				cid.process_id,
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				0,0,&timeout)))
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			return __tt_fork_cancel(*hprocess,status);
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	/* [thou shalt remember the single step paradox] */
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	if ((status = __ntapi->zw_resume_thread(
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			*hthread,0)))
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		return __tt_fork_cancel(*hprocess,status);
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	/* hoppla */
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	return (int32_t)cid.process_id;
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}
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intptr_t __fastcall __ntapi_tt_fork_v2(
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	__out	void **		hprocess,
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	__out	void **		hthread)
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{
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	int32_t			status;
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	intptr_t		pid;
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	nt_large_integer	timeout;
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	void **			hport_session;
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	void *			htty_connected;
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	ntapi_internals *	__internals;
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	__internals	= __ntapi_internals();
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	hport_session	= &__internals->hport_tty_session;
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	timeout.quad	= (-1) * 10 * 1000 * __NT_FORK_CHILD_WAIT_MILLISEC;
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	htty_connected  = 0;
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	if (hport_session && *hport_session)
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		if (__ntapi_tt_create_inheritable_event(
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				&htty_connected,
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				NT_NOTIFICATION_EVENT,
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				NT_EVENT_NOT_SIGNALED))
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			return (intptr_t)(-1);
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	pid = __tt_fork_impl_v2(hprocess,hthread);
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	if (!hport_session || !*hport_session)
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		return pid;
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	else if (pid < 0)
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		return pid;
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	if (pid == 0) {
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		at_store(&__internals->hlock,0);
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		if ((status = __ntapi->tty_connect(
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				hport_session,
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				__internals->subsystem->base_named_objects,
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				NT_SECURITY_IMPERSONATION)))
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			return __tt_fork_cancel(NT_CURRENT_PROCESS_HANDLE,status);
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		__internals->hdev_mount_point_mgr = 0;
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		if (__internals->rtdata)
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			__internals->rtdata->hsession = *hport_session;
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		__ntapi->zw_set_event(
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			htty_connected,
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			0);
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	} else {
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		status = __ntapi->zw_wait_for_single_object(
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			htty_connected,
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			NT_SYNC_NON_ALERTABLE,
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			&timeout);
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		if (status && __PSX_DEBUG)
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			if ((status = __ntapi->zw_wait_for_single_object(
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					htty_connected,
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					NT_SYNC_NON_ALERTABLE,
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					0)))
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				pid = __tt_fork_cancel(*hprocess,status);
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	}
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	__ntapi->zw_close(htty_connected);
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	return pid;
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}