Blame src/debug/ptyc_dbg_cat.c

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/*********************************************************/
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/*  ptycon: a pty-console bridge                         */
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/*  Copyright (C) 2016--2017  SysDeer Technologies, LLC  */
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/*  Released under GPLv2 and GPLv3; see COPYING.PTYCON.  */
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/*********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntcon/ntcon.h>
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#include <ntapi/ntapi.h>
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#include <ptycon/ptycon.h>
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#include "ptycon_driver_impl.h"
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static int32_t ptyc_cat(
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	struct ptyc_driver_ctx* dctx,
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	void *			hat,
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	const char *		unit,
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	void *			hevent)
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{
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	int32_t		status;
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	void *		hfile;
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	nt_iosb		iosb;
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	uintptr_t	nread;
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	uintptr_t	buffer[32768/sizeof(uintptr_t)];
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	char *		ch;
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	if ((status = ptyc_open_file(&hfile,hat,unit,true)))
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		return status;
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	status = ntapi->zw_read_file(
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		hfile,
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		0,0,0,
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		&iosb,
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		buffer,sizeof(buffer),
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		0,0);
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	while (status == NT_STATUS_SUCCESS) {
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		ch    = (char *)buffer;
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		nread = iosb.info;
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		for ( ; nread; ) {
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			status = ntapi->pty_write(
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				dctx->cctx->hpts,
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				hevent,0,0,&iosb,
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				ch,(uint32_t)nread,
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				0,0);
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			if (status == NT_STATUS_PENDING)
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				status = ntapi->zw_wait_for_single_object(
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					hevent,NT_SYNC_ALERTABLE,0);
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			if (status || iosb.status) {
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				ntapi->zw_close(hfile);
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				return status ? status : iosb.status;
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			}
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			ch    += iosb.info;
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			nread -= iosb.info;
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		}
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		status = ntapi->zw_read_file(
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			hfile,
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			0,0,0,
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			&iosb,
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			buffer,sizeof(buffer),
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			0,0);
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	}
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	ntapi->zw_close(hfile);
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	return (status == NT_STATUS_END_OF_FILE)
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		? NT_STATUS_SUCCESS
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		: status;
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}
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int __stdcall ptyc_dbg_cat(struct ptyc_driver_ctx * dctx)
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{
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	int32_t		status;
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	void *		hevent;
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	const char **	punit;
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	nt_rtdata *	rtdata;
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	nt_peb * 	peb;
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	void *		hat;
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	if (!dctx->units[0])
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		return 0;
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	if ((status = ntapi->tt_create_private_event(
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			&hevent,
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			NT_NOTIFICATION_EVENT,
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			NT_EVENT_NOT_SIGNALED)))
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		return status;
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	if ((status = ntapi->tt_get_runtime_data(&rtdata,0)))
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		return status;
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	if (!(peb = (nt_peb *)pe_get_peb_address()))
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		return NT_STATUS_INTERNAL_ERROR;
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	if (!peb->process_params)
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		return NT_STATUS_INTERNAL_ERROR;
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	hat = rtdata->hcwd
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		? rtdata->hcwd
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		: peb->process_params->cwd_handle;
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	for (punit=dctx->units, status=0; *punit && !status; punit++)
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		status = ptyc_cat(
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			dctx,hat,
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			*punit,
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			hevent);
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	ntapi->zw_close(hevent);
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	return status;
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}