Blame src/pty/ntapi_pty_ioctl.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2016  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_port.h>
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#include <ntapi/nt_tty.h>
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#include <ntapi/nt_termios.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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#include "ntapi_pty.h"
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int32_t	__stdcall __ntapi_pty_ioctl(
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	nt_pty *		pty,
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	void *			hevent			__optional,
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	nt_io_apc_routine *	apc_routine		__optional,
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	void *			apc_context		__optional,
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	nt_iosb *		iosb,
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	uint32_t		ctlcode,
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	void *			input_buffer		__optional,
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	uint32_t		input_buffer_length,
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	void *			output_buffer		__optional,
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	uint32_t		output_buffer_length)
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{
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	int32_t			status;
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	nt_pty_sigctl_msg	msg;
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	nt_tty_sigctl_info *	input;
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	nt_tty_sigctl_info *	output;
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	if ((uintptr_t)input_buffer % sizeof(uintptr_t))
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		return NT_STATUS_DATATYPE_MISALIGNMENT_ERROR;
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	else if (input_buffer_length != sizeof(nt_tty_sigctl_info))
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		return NT_STATUS_INVALID_BUFFER_SIZE;
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	else if (!output_buffer)
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		return NT_STATUS_ACCESS_DENIED;
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	else if ((uintptr_t)output_buffer % sizeof(uintptr_t))
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		return NT_STATUS_DATATYPE_MISALIGNMENT_ERROR;
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	else if (output_buffer_length < sizeof(nt_tty_sigctl_info))
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		return NT_STATUS_BUFFER_TOO_SMALL;
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	input  = (nt_tty_sigctl_info *)input_buffer;
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	output = (nt_tty_sigctl_info *)output_buffer;
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	__ntapi->tt_aligned_block_memset(
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		&msg,0,sizeof(msg));
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	msg.header.msg_type		= NT_LPC_NEW_MESSAGE;
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	msg.header.data_size		= sizeof(msg.data);
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	msg.header.msg_size		= sizeof(msg);
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	msg.data.ttyinfo.opcode		= NT_TTY_PTY_IOCTL;
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	msg.data.ctlinfo.hpty		= pty->hpty;
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	msg.data.ctlinfo.luid.high	= pty->luid.high;
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	msg.data.ctlinfo.luid.low	= pty->luid.low;
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	msg.data.ctlinfo.ctlcode	= ctlcode;
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	__ntapi->tt_guid_copy(
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		&msg.data.ctlinfo.guid,
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		&pty->guid);
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	msg.data.ctlinfo.ctxarg[0]	= input->ctxarg[0];
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	msg.data.ctlinfo.ctxarg[1]	= input->ctxarg[1];
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	msg.data.ctlinfo.ctxarg[2]	= input->ctxarg[2];
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	msg.data.ctlinfo.ctxarg[3]	= input->ctxarg[3];
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	__ntapi->tt_generic_memcpy(
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		(char *)&msg.data.ctlinfo.terminfo,
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		(char *)&input->terminfo,
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		sizeof(input->terminfo));
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	__ntapi->tt_generic_memcpy(
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		(char *)&msg.data.ctlinfo.winsize,
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		(char *)&input->winsize,
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		sizeof(input->winsize));
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	if ((status = __ntapi->zw_request_wait_reply_port(pty->hport,&msg,&msg)))
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		return status;
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	else if (msg.data.ttyinfo.status)
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		return msg.data.ttyinfo.status;
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	__ntapi->tt_aligned_block_memcpy(
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		(uintptr_t *)output,
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		(uintptr_t *)&msg.data.ctlinfo,
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		sizeof(*output));
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	iosb->info   = msg.data.ctlinfo.iosb.info;
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	iosb->status = msg.data.ctlinfo.iosb.status;
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	return NT_STATUS_SUCCESS;
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}