From 9faf9a067cfeaa786ac1784fb8bf4eece49922e9 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 30 Jul 2017 21:21:21 +0000
Subject: subsystem interfaces: integrated sysv semaphore client-side
 interfaces.

---
 src/sem/ntapi_sem_fdio.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/sem/ntapi_sem_fdio.c

(limited to 'src/sem/ntapi_sem_fdio.c')

diff --git a/src/sem/ntapi_sem_fdio.c b/src/sem/ntapi_sem_fdio.c
new file mode 100644
index 0000000..5840226
--- /dev/null
+++ b/src/sem/ntapi_sem_fdio.c
@@ -0,0 +1,65 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013--2017  Z. Gilboa                 */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/nt_file.h>
+#include <ntapi/nt_string.h>
+#include <ntapi/nt_atomic.h>
+#include <ntapi/nt_port.h>
+#include <ntapi/nt_ipc.h>
+#include <ntapi/nt_sem.h>
+#include <ntapi/ntapi.h>
+#include "ntapi_impl.h"
+
+static int32_t __sem_fdio(
+	nt_sem_info *		sem,
+	nt_iosb *		iosb,
+	uint32_t		opcode)
+{
+	int32_t		status;
+	nt_sem_info_msg	msg;
+
+	/* validate */
+	if (!iosb)
+		return NT_STATUS_INVALID_PARAMETER;
+
+	/* msg */
+	__ntapi->tt_aligned_block_memset(
+		&msg,0,sizeof(msg));
+
+	msg.header.msg_type		= NT_LPC_NEW_MESSAGE;
+	msg.header.data_size		= sizeof(msg.data);
+	msg.header.msg_size		= sizeof(msg);
+	msg.data.ttyinfo.opcode		= opcode;
+
+	msg.data.seminfo.semkey		= sem->semkey;
+	msg.data.seminfo.semid		= sem->semid;
+	msg.data.seminfo.sempid		= sem->sempid;
+
+	if ((status = __ntapi->zw_request_wait_reply_port(sem->hport,&msg,&msg)))
+		return status;
+	else if (msg.data.ttyinfo.status)
+		return msg.data.ttyinfo.status;
+
+	iosb->status = NT_STATUS_SUCCESS;
+	iosb->info   = 0;
+
+	return NT_STATUS_SUCCESS;
+}
+
+int32_t	__stdcall __ntapi_sem_cancel(
+	__in	nt_sem_info *		sem,
+	__out	nt_iosb *		iosb)
+{
+	return __sem_fdio(sem,iosb,NT_TTY_SEM_CANCEL);
+}
+
+int32_t	__stdcall __ntapi_sem_free(
+	__in	nt_sem_info *		sem,
+	__out	nt_iosb *		iosb)
+{
+	return __sem_fdio(sem,iosb,NT_TTY_SEM_FREE);
+}
-- 
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