From 778de5176a3683e31be94f6b21aa1266dae00934 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Thu, 14 Jul 2016 07:35:48 -0400
Subject: daemon: added daemon initialization logic.

---
 src/daemon/ptyc_daemon_init.c | 121 ++++++++++++++++++++++++++++++++++++++++++
 src/daemon/ptyc_daemon_loop.c |  18 +++++++
 2 files changed, 139 insertions(+)
 create mode 100644 src/daemon/ptyc_daemon_init.c
 create mode 100644 src/daemon/ptyc_daemon_loop.c

(limited to 'src/daemon')

diff --git a/src/daemon/ptyc_daemon_init.c b/src/daemon/ptyc_daemon_init.c
new file mode 100644
index 0000000..c7fa5eb
--- /dev/null
+++ b/src/daemon/ptyc_daemon_init.c
@@ -0,0 +1,121 @@
+/*********************************************************/
+/*  ptycon: a pty-console bridge                         */
+/*  Copyright (C) 2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PTYCON.  */
+/*********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/ntapi.h>
+#include <ntapi/nt_atomic.h>
+
+#include <ptycon/ptycon.h>
+#include "ptycon_daemon_impl.h"
+#include "ptycon_driver_impl.h"
+
+static const nt_guid ptyc_daemon_guid = PTYC_PORT_GUID_DAEMON;
+
+static int32_t ptyc_daemon_init_impl(struct ptyc_daemon_ctx * dctx)
+{
+	int32_t				status;
+	nt_daemon_params		dparams;
+	wchar16_t *			port_name;
+	nt_port_name_keys *		port_name_keys;
+
+	/* daemon attributes */
+	dctx->daemon_attr.type    = NT_PORT_TYPE_DAEMON;
+	dctx->daemon_attr.subtype = NT_PORT_SUBTYPE_DEFAULT;
+
+	/* port guid */
+	ntapi->tt_guid_copy(
+		&dctx->daemon_attr.guid,
+		&ptyc_daemon_guid);
+
+	/* port keys */
+	if ((status = ntapi->tt_port_generate_keys(&dctx->daemon_attr.keys)))
+		return status;
+
+	/* port name */
+	ntapi->tt_port_name_from_attributes(
+		&dctx->daemon_name,
+		&dctx->daemon_attr);
+
+	/* dparams */
+	ntapi->tt_aligned_block_memset(
+		&dparams,0,sizeof(dparams));
+
+	port_name      = (wchar16_t *)&dctx->daemon_name;
+	port_name_keys = (nt_port_name_keys *)&dctx->daemon_name.port_name_keys;
+
+	dparams.port_keys	= &dctx->daemon_keys;
+	dparams.port_name	= port_name;
+	dparams.port_name_keys	= port_name_keys;
+
+	dparams.port_msg_size	= sizeof(nt_tty_port_msg);
+	dparams.flags		= NT_DSR_INIT_DEFAULT;
+
+	dparams.daemon_once_routine	= 0;
+	dparams.daemon_loop_routine	= ptyc_daemon_loop;
+	dparams.daemon_loop_context	= dctx;
+
+	dparams.pport_daemon		= &dctx->hport_daemon;
+	dparams.pport_internal_client	= &dctx->hport_internal_client;
+
+	dparams.pevent_daemon_ready		= &dctx->hevent_daemon_ready;
+	dparams.pevent_internal_client_ready	= &dctx->hevent_internal_client_ready;
+
+	dparams.stack_size_commit		= 8192;
+	dparams.stack_size_reserve		= 8192;
+
+	return ntapi->dsr_init(&dparams);
+}
+
+static int32_t ptyc_daemon_once = 0;
+
+int32_t __stdcall ptyc_daemon_init(struct ptyc_daemon_ctx * dctx, uint64_t drvflags)
+{
+	int32_t			status;
+	nt_timeout		timeout;
+	nt_runtime_data *	rtdata;
+
+	/* rtdata */
+	if ((status = ntapi->tt_get_runtime_data(&rtdata,0)))
+		return status;
+
+	/* needed? */
+	if (drvflags & PTYC_DRIVER_DAEMON_NEVER)
+		return 0;
+
+	if (!(drvflags & PTYC_DRIVER_DAEMON_ALWAYS))
+		if (ntapi->tt_guid_compare(&rtdata->srv_guid,&ptyc_daemon_guid))
+			return 0;
+
+	/* once */
+	switch (at_locked_cas_32(&ptyc_daemon_once,0,1)) {
+		case 0:
+			if ((status = ptyc_daemon_init_impl(dctx))) {
+				at_locked_add_32(&ptyc_daemon_once,2);
+				return status;
+			}
+
+			at_locked_inc_32(&ptyc_daemon_once);
+			return 0;
+
+		case 1:
+			timeout.quad = -10;
+
+			for (; (at_locked_cas_32(&ptyc_daemon_once,0,1) == 1); )
+				ntapi->zw_delay_execution(
+					NT_SYNC_ALERTABLE,
+					&timeout);
+
+			return (ptyc_daemon_once == 2)
+				? 0 : -1;
+
+		case 2:
+			return 0;
+
+		case 3:
+		default:
+			return -1;
+	}
+}
diff --git a/src/daemon/ptyc_daemon_loop.c b/src/daemon/ptyc_daemon_loop.c
new file mode 100644
index 0000000..954ed8c
--- /dev/null
+++ b/src/daemon/ptyc_daemon_loop.c
@@ -0,0 +1,18 @@
+/*********************************************************/
+/*  ptycon: a pty-console bridge                         */
+/*  Copyright (C) 2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PTYCON.  */
+/*********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/ntapi.h>
+
+#include <ptycon/ptycon.h>
+#include "ptycon_daemon_impl.h"
+#include "ptycon_driver_impl.h"
+
+int32_t __stdcall ptyc_daemon_loop(void * ctx)
+{
+	(void)ctx;
+	return ntapi->tt_wait_for_dummy_event();
+}
-- 
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