1 /* Unit test suite for comm functions
2  *
3  * Copyright 2003 Kevin Groeneveld
4  * Copyright 2005 Uwe Bonnes
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19  */
20 
21 #include <stdio.h>
22 
23 #include "ntstatus.h"
24 #define WIN32_NO_STATUS
25 #include "wine/test.h"
26 #include "wine/winternl.h"
27 #include "winbase.h"
28 #include "winnls.h"
29 
30 #define TIMEOUT 1000   /* one second for Timeouts*/
31 #define SLOWBAUD 150
32 #define FASTBAUD 115200
33 #define TIMEDELTA 150  /* 150 ms uncertainty allowed */
34 
35 /* Define the appropriate LOOPBACK(s) TRUE if you have a Loopback cable with
36  * the mentioned shorts connected to your Serial port
37  */
38 #define LOOPBACK_TXD_RXD  FALSE /* Sub-D 9: Short 2-3 */
39 #define LOOPBACK_CTS_RTS  FALSE /* Sub-D 9: Short 7-8 */
40 #define LOOPBACK_DTR_DSR  FALSE /* Sub-D 9: Short 4-6 */
41 #define LOOPBACK_DTR_RING FALSE /* Sub-D 9: Short 4-9 */
42 #define LOOPBACK_DTR_DCD  FALSE /* Sub-D 9: Short 4-1 */
43 /* Many Linux serial drivers have the TIOCM_LOOP flag in the TIOCM_SET ioctl
44  * available. For the 8250 this is equivalent to TXD->RXD, OUT2->DCD,
45  * OUT1->RI, RTS->CTS and DTR->DSR
46  */
47 /* use variables and not #define to compile the code */
48 static BOOL loopback_txd_rxd  = LOOPBACK_TXD_RXD;
49 static BOOL loopback_rts_cts  = LOOPBACK_CTS_RTS;
50 static BOOL loopback_dtr_dsr  = LOOPBACK_DTR_DSR;
51 static BOOL loopback_dtr_ring = LOOPBACK_DTR_RING;
52 static BOOL loopback_dtr_dcd  = LOOPBACK_DTR_DCD;
53 
54 static NTSTATUS (WINAPI *pNtReadFile)(HANDLE hFile, HANDLE hEvent,
55                                       PIO_APC_ROUTINE apc, void* apc_user,
56                                       PIO_STATUS_BLOCK io_status, void* buffer, ULONG length,
57                                       PLARGE_INTEGER offset, PULONG key);
58 static NTSTATUS (WINAPI *pNtWriteFile)(HANDLE hFile, HANDLE hEvent,
59                                        PIO_APC_ROUTINE apc, void* apc_user,
60                                        PIO_STATUS_BLOCK io_status,
61                                        const void* buffer, ULONG length,
62                                        PLARGE_INTEGER offset, PULONG key);
63 
64 typedef struct
65 {
66 	char string[100];
67 	BOOL result;
68 	BOOL old_style;
69 	DCB dcb1, dcb2;
70 	COMMTIMEOUTS timeouts1, timeouts2;
71 } TEST;
72 
73 static const TEST test[] =
74 {
75 	{
76 		"baud=9600 parity=e data=5 stop=1 xon=on odsr=off octs=off dtr=on rts=on idsr=on",
77 		TRUE, FALSE,
78 		{ 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
79 		{ 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
80 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
81 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
82 	},
83 	{
84 		"baud=0 parity=M data=6 stop=1.5 xon=off odsr=on octs=ON dtr=off rts=off idsr=OFF",
85 		TRUE, FALSE,
86 		{ 0x00000000, 0x00000000, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
87 		{ 0xffffffff, 0x00000000, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x03, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
88 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
89 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
90 	},
91 	{
92 		"BAUD=4000000000 parity=n data=7 stop=2 to=off",
93 		TRUE, FALSE,
94 		{ 0x00000000, 0xee6b2800, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
95 		{ 0xffffffff, 0xee6b2800, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x00, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
96 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
97 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }
98 	},
99 	{
100 		"Baud=115200 Parity=O Data=8 To=On",
101 		TRUE, FALSE,
102 		{ 0x00000000, 0x0001c200, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
103 		{ 0xffffffff, 0x0001c200, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x01, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
104 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 },
105 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 }
106 	},
107 	{
108 		"PaRiTy=s           Data=7          DTR=on",
109 		TRUE, FALSE,
110 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
111 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x04, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
112 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
113 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
114 	},
115 	{
116 		"data=4",
117 		FALSE, FALSE,
118 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
119 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
120 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
121 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
122 	},
123 	{
124 		"data=9",
125 		FALSE, FALSE,
126 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
127 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
128 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
129 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
130 	},
131 	{
132 		"parity=no",
133 		FALSE, FALSE,
134 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
135 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
136 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
137 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
138 	},
139 	{
140 		"stop=0",
141 		FALSE, FALSE,
142 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
143 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
144 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
145 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
146 	},
147 	{
148 		"stop=1.501",
149 		FALSE, FALSE,
150 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
151 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
152 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
153 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
154 	},
155 	{
156 		"stop=3",
157 		FALSE, FALSE,
158 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
159 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
160 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
161 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
162 	},
163 	{
164 		"to=foobar",
165 		FALSE, FALSE,
166 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
167 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
168 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
169 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
170 	},
171 	{
172 		" baud=9600",
173 		FALSE, FALSE,
174 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
175 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
176 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
177 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
178 	},
179 	{
180 		"baud= 9600",
181 		FALSE, FALSE,
182 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
183 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
184 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
185 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
186 	},
187 	{
188 		"baud=9600,data=8",
189 		FALSE, FALSE,
190 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
191 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
192 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
193 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
194 	},
195 	{
196 		"11,n,8,1",
197 		TRUE, TRUE,
198 		{ 0x00000000, 0x0000006e, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
199 		{ 0xffffffff, 0x0000006e, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
200 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
201 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
202 	},
203 	{
204 		"30 ,E, 5,1.5",
205 		TRUE, TRUE,
206 		{ 0x00000000, 0x0000012c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
207 		{ 0xffffffff, 0x0000012c, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x02, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
208 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
209 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
210 	},
211 	{
212 		"60, m, 6, 2 ",
213 		TRUE, TRUE,
214 		{ 0x00000000, 0x00000258, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
215 		{ 0xffffffff, 0x00000258, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x03, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
216 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
217 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
218 	},
219 	{
220 		"12 , o , 7 , 1",
221 		TRUE, TRUE,
222 		{ 0x00000000, 0x000004b0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
223 		{ 0xffffffff, 0x000004b0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x01, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
224 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
225 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
226 	},
227 	{
228 		"24,s,8,1.5",
229 		TRUE, TRUE,
230 		{ 0x00000000, 0x00000960, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
231 		{ 0xffffffff, 0x00000960, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x04, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
232 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
233 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
234 	},
235 	{
236 		"48,n,8,1,p",
237 		TRUE, TRUE,
238 		{ 0x00000000, 0x000012c0, 0, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
239 		{ 0xffffffff, 0x000012c0, 1, 1, 1, 1, 2, 1, 1, 0, 0, 1, 1, 2, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
240 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
241 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
242 	},
243 	{
244 		"96,N,8,1 , x ",
245 		TRUE, TRUE,
246 		{ 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
247 		{ 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
248 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
249 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
250 	},
251 	{
252 		"19, e, 7, 1, x",
253 		TRUE, TRUE,
254 		{ 0x00000000, 0x00004b00, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
255 		{ 0xffffffff, 0x00004b00, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
256 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
257 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
258 	},
259 	{
260 		"0,M,7,1,P",
261 		TRUE, TRUE,
262 		{ 0x00000000, 0x00000000, 0, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
263 		{ 0xffffffff, 0x00000000, 1, 1, 1, 1, 2, 1, 1, 0, 0, 1, 1, 2, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
264 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
265 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
266 	},
267 	{
268 		"4000000000,O,7,1.5,X",
269 		TRUE, TRUE,
270 		{ 0x00000000, 0xee6b2800, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
271 		{ 0xffffffff, 0xee6b2800, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
272 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
273 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
274 	},
275 	{
276 		"96,N,8,1 to=on",
277 		FALSE, TRUE,
278 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
279 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
280 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
281 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
282 	},
283 	{
284 		"96,NO,8,1",
285 		FALSE, TRUE,
286 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
287 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
288 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
289 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
290 	},
291 	{
292 		"96,N,4,1",
293 		FALSE, TRUE,
294 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
295 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
296 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
297 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
298 	},
299 	{
300 		"96,N,9,1",
301 		FALSE, TRUE,
302 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
303 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
304 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
305 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
306 	},
307 	{
308 		"96,N,8,0",
309 		FALSE, TRUE,
310 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
311 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
312 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
313 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
314 	},
315 	{
316 		"96,N,8,3",
317 		FALSE, TRUE,
318 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
319 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
320 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
321 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
322 	},
323 	{
324 		"96,N,8,1,K",
325 		FALSE, TRUE,
326 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
327 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
328 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
329 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
330 	},
331 	{
332 		"COM0:baud=115200",
333 		FALSE, FALSE,
334 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
335 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
336 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
337 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
338 	},
339 	{
340 		"COMx:baud=38400 data=8",
341 		TRUE, FALSE,
342 		{ 0x00000000, 0x00009600, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
343 		{ 0xffffffff, 0x00009600, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
344 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
345 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
346 	},
347 	{
348 		"COMx  :to=on stop=1.5",
349 		TRUE, FALSE,
350 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
351 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
352 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 },
353 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000EA60 }
354 	},
355 	{
356 		"COMx:               baud=12345     data=7",
357 		TRUE, FALSE,
358 		{ 0x00000000, 0x00003039, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
359 		{ 0xffffffff, 0x00003039, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
360 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
361 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
362 	},
363 	{
364 		"COMx : xon=on odsr=off",
365 		TRUE, FALSE,
366 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
367 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 0, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
368 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
369 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
370 	},
371 	{
372 		"COM0:9600,N,8,1",
373 		FALSE, TRUE,
374 		{ 0x00000000, 0x00000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
375 		{ 0xffffffff, 0xffffffff, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
376 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
377 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
378 	},
379 	{
380 		"COMx:9600,N,8,1",
381 		TRUE, TRUE,
382 		{ 0x00000000, 0x00002580, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
383 		{ 0xffffffff, 0x00002580, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x08, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
384 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
385 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
386 	},
387 	{
388 		"COMx:  11,E,7,2",
389 		TRUE, TRUE,
390 		{ 0x00000000, 0x0000006e, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x07, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
391 		{ 0xffffffff, 0x0000006e, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x07, 0x02, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
392 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
393 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
394 	},
395 	{
396 		"COMx  :19,M,5,1",
397 		TRUE, TRUE,
398 		{ 0x00000000, 0x00004b00, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x05, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
399 		{ 0xffffffff, 0x00004b00, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x05, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
400 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
401 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
402 	},
403 	{
404 		"COMx  :    57600,S,6,2,x",
405 		TRUE, TRUE,
406 		{ 0x00000000, 0x0000e100, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0x00000, 0x0000, 0x0000, 0x0000, 0x06, 0x04, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0000 },
407 		{ 0xffffffff, 0x0000e100, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0x1ffff, 0xffff, 0xffff, 0xffff, 0x06, 0x04, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xffff },
408 		{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
409 		{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }
410 	},
411 };
412 
413 #define TEST_COUNT (sizeof(test) / sizeof(TEST))
414 
415 /* This function can be useful if you are modifying the test cases and want to
416    output the contents of a DCB structure. */
417 /*static print_dcb(DCB *pdcb)
418 {
419 	printf("0x%08x, 0x%08x, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, %u, 0x%05x, 0x%04x, 0x%04x, 0x%04x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%04x\n",
420 		pdcb->DCBlength,
421 		pdcb->BaudRate,
422 		pdcb->fBinary,
423 		pdcb->fParity,
424 		pdcb->fOutxCtsFlow,
425 		pdcb->fOutxDsrFlow,
426 		pdcb->fDtrControl,
427 		pdcb->fDsrSensitivity,
428 		pdcb->fTXContinueOnXoff,
429 		pdcb->fOutX,
430 		pdcb->fInX,
431 		pdcb->fErrorChar,
432 		pdcb->fNull,
433 		pdcb->fRtsControl,
434 		pdcb->fAbortOnError,
435 		pdcb->fDummy2,
436 		pdcb->wReserved,
437 		pdcb->XonLim,
438 		pdcb->XoffLim,
439 		pdcb->ByteSize,
440 		pdcb->Parity,
441 		pdcb->StopBits,
442 		pdcb->XonChar & 0xff,
443 		pdcb->XoffChar & 0xff,
444 		pdcb->ErrorChar & 0xff,
445 		pdcb->EofChar & 0xff,
446 		pdcb->EvtChar & 0xff,
447 		pdcb->wReserved1 & 0xffff );
448 } */
449 
450 static void check_result(const char *function, const TEST *ptest, int initial_value, BOOL result)
451 {
452 	DWORD LastError = GetLastError();
453 	DWORD CorrectError = (ptest->result ? 0xdeadbeef : ERROR_INVALID_PARAMETER);
454 
455 	ok(LastError == CorrectError, "%s(\"%s\"), 0x%02x: GetLastError() returned %d, should be %d\n", function, ptest->string, initial_value, LastError, CorrectError);
456 	ok(result == ptest->result, "%s(\"%s\"), 0x%02x: return value should be %s\n", function, ptest->string, initial_value, ptest->result ? "TRUE" : "FALSE");
457 }
458 
459 #define check_dcb_member(a,b) ok(pdcb1->a == pdcb2->a, "%s(\"%s\"), 0x%02x: "#a" is "b", should be "b"\n", function, ptest->string, initial_value, pdcb1->a, pdcb2->a)
460 #define check_dcb_member2(a,c,b) if(pdcb2->a == c) { check_dcb_member(a,b); } else { ok(pdcb1->a == pdcb2->a || pdcb1->a == c, "%s(\"%s\"), 0x%02x: "#a" is "b", should be "b" or "b"\n", function, ptest->string, initial_value, pdcb1->a, pdcb2->a, c); }
461 
462 static void check_dcb(const char *function, const TEST *ptest, int initial_value, const DCB *pdcb1, const DCB *pdcb2)
463 {
464 	/* DCBlength is a special case since Win 9x sets it but NT does not.
465 	   We will accept either as correct. */
466 	check_dcb_member2(DCBlength, (DWORD)sizeof(DCB), "%u");
467 
468 	/* For old style control strings Win 9x does not set the next five members, NT does. */
469 	if(ptest->old_style && ptest->result)
470 	{
471 		check_dcb_member2(fOutxCtsFlow, ((unsigned int)initial_value & 1), "%u");
472 		check_dcb_member2(fDtrControl, ((unsigned int)initial_value & 3), "%u");
473 		check_dcb_member2(fOutX, ((unsigned int)initial_value & 1), "%u");
474 		check_dcb_member2(fInX, ((unsigned)initial_value & 1), "%u");
475 		check_dcb_member2(fRtsControl, ((unsigned)initial_value & 3), "%u");
476 	}
477 	else
478 	{
479 		check_dcb_member(fOutxCtsFlow, "%u");
480 		check_dcb_member(fDtrControl, "%u");
481 		check_dcb_member(fOutX, "%u");
482 		check_dcb_member(fInX, "%u");
483 		check_dcb_member(fRtsControl, "%u");
484 	}
485 
486 	if(ptest->result)
487 	{
488 		/* For the idsr=xxx parameter, NT sets fDsrSensitivity, 9x sets
489 		   fOutxDsrFlow. */
490 		if(!ptest->old_style)
491 		{
492 			check_dcb_member2(fOutxDsrFlow, pdcb2->fDsrSensitivity, "%u");
493 			check_dcb_member2(fDsrSensitivity, pdcb2->fOutxDsrFlow, "%u");
494 		}
495 		else
496 		{
497 			/* For old style control strings Win 9x does not set the
498 			   fOutxDsrFlow member, NT does. */
499 			check_dcb_member2(fOutxDsrFlow, ((unsigned int)initial_value & 1), "%u");
500 			check_dcb_member(fDsrSensitivity, "%u");
501 		}
502 	}
503 	else
504 	{
505 		check_dcb_member(fOutxDsrFlow, "%u");
506 		check_dcb_member(fDsrSensitivity, "%u");
507 	}
508 
509 	/* Check the result of the DCB members. */
510 	check_dcb_member(BaudRate, "%u");
511 	check_dcb_member(fBinary, "%u");
512 	check_dcb_member(fParity, "%u");
513 	check_dcb_member(fTXContinueOnXoff, "%u");
514 	check_dcb_member(fErrorChar, "%u");
515 	check_dcb_member(fNull, "%u");
516 	check_dcb_member(fAbortOnError, "%u");
517 	check_dcb_member(fDummy2, "%u");
518 	check_dcb_member(wReserved, "%u");
519 	check_dcb_member(XonLim, "%u");
520 	check_dcb_member(XoffLim, "%u");
521 	check_dcb_member(ByteSize, "%u");
522 	check_dcb_member(Parity, "%u");
523 	check_dcb_member(StopBits, "%u");
524 	check_dcb_member(XonChar, "%d");
525 	check_dcb_member(XoffChar, "%d");
526 	check_dcb_member(ErrorChar, "%d");
527 	check_dcb_member(EofChar, "%d");
528 	check_dcb_member(EvtChar, "%d");
529 	check_dcb_member(wReserved1, "%u");
530 }
531 
532 #define check_timeouts_member(a) ok(ptimeouts1->a == ptimeouts2->a, "%s(\"%s\"), 0x%02x: "#a" is %u, should be %u\n", function, ptest->string, initial_value, ptimeouts1->a, ptimeouts2->a);
533 
534 static void check_timeouts(const char *function, const TEST *ptest, int initial_value, const COMMTIMEOUTS *ptimeouts1, const COMMTIMEOUTS *ptimeouts2)
535 {
536 	check_timeouts_member(ReadIntervalTimeout);
537 	check_timeouts_member(ReadTotalTimeoutMultiplier);
538 	check_timeouts_member(ReadTotalTimeoutConstant);
539 	check_timeouts_member(WriteTotalTimeoutMultiplier);
540 	check_timeouts_member(WriteTotalTimeoutConstant);
541 }
542 
543 static void test_BuildCommDCBA(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb)
544 {
545 	BOOL result;
546 	DCB dcb;
547 
548 	/* set initial conditions */
549 	memset(&dcb, initial_value, sizeof(DCB));
550 	SetLastError(0xdeadbeef);
551 
552 	result = BuildCommDCBA(string, &dcb);
553 
554 	/* check results */
555 	check_result("BuildCommDCBA", ptest, initial_value, result);
556 	check_dcb("BuildCommDCBA", ptest, initial_value, &dcb, pexpected_dcb);
557 }
558 
559 static void test_BuildCommDCBAndTimeoutsA(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb, const COMMTIMEOUTS *pexpected_timeouts)
560 {
561 	BOOL result;
562 	DCB dcb;
563 	COMMTIMEOUTS timeouts;
564 
565 	/* set initial conditions */
566 	memset(&dcb, initial_value, sizeof(DCB));
567 	memset(&timeouts, initial_value, sizeof(COMMTIMEOUTS));
568 	SetLastError(0xdeadbeef);
569 
570 	result = BuildCommDCBAndTimeoutsA(string, &dcb, &timeouts);
571 
572 	/* check results */
573 	check_result("BuildCommDCBAndTimeoutsA", ptest, initial_value, result);
574 	check_dcb("BuildCommDCBAndTimeoutsA", ptest, initial_value, &dcb, pexpected_dcb);
575 	check_timeouts("BuildCommDCBAndTimeoutsA", ptest, initial_value, &timeouts, pexpected_timeouts);
576 }
577 
578 static void test_BuildCommDCBW(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb)
579 {
580 	BOOL result;
581 	DCB dcb;
582 	WCHAR wide_string[sizeof(ptest->string)];
583 	static int reportedDCBW = 0;
584 
585 	MultiByteToWideChar(CP_ACP, 0, string, -1, wide_string, sizeof(wide_string) / sizeof(WCHAR));
586 
587 	/* set initial conditions */
588 	memset(&dcb, initial_value, sizeof(DCB));
589 	SetLastError(0xdeadbeef);
590 
591 	result = BuildCommDCBW(wide_string, &dcb);
592 
593 	if(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
594 	{
595 		if(!reportedDCBW++)
596 			win_skip("BuildCommDCBW is not implemented\n");
597 		return;
598 	}
599 
600 	/* check results */
601 	check_result("BuildCommDCBW", ptest, initial_value, result);
602 	check_dcb("BuildCommDCBW", ptest, initial_value, &dcb, pexpected_dcb);
603 }
604 
605 static void test_BuildCommDCBAndTimeoutsW(const char *string, const TEST *ptest, int initial_value, const DCB *pexpected_dcb, const COMMTIMEOUTS *pexpected_timeouts)
606 {
607 	BOOL result;
608 	DCB dcb;
609 	COMMTIMEOUTS timeouts;
610 	WCHAR wide_string[sizeof(ptest->string)];
611 	static int reportedDCBAndTW = 0;
612 
613 	MultiByteToWideChar(CP_ACP, 0, string, -1, wide_string, sizeof(wide_string) / sizeof(WCHAR));
614 
615 	/* set initial conditions */
616 	memset(&dcb, initial_value, sizeof(DCB));
617 	memset(&timeouts, initial_value, sizeof(COMMTIMEOUTS));
618 	SetLastError(0xdeadbeef);
619 
620 	result = BuildCommDCBAndTimeoutsW(wide_string, &dcb, &timeouts);
621 
622 	if(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
623 	{
624 		if(!reportedDCBAndTW++)
625 			win_skip("BuildCommDCBAndTimeoutsW is not implemented\n");
626 		return;
627 	}
628 
629 	/* check results */
630 	check_result("BuildCommDCBAndTimeoutsW", ptest, initial_value, result);
631 	check_dcb("BuildCommDCBAndTimeoutsW", ptest, initial_value, &dcb, pexpected_dcb);
632 	check_timeouts("BuildCommDCBAndTimeoutsW", ptest, initial_value, &timeouts, pexpected_timeouts);
633 }
634 
635 static void test_BuildCommDCB(void)
636 {
637 	char port_name[] = "COMx";
638 	char port = 0;
639 	unsigned int i;
640 	char *ptr;
641 
642 	/* Some of these tests require a valid COM port.  This loop will try to find
643 	   a valid port. */
644 	for(port_name[3] = '1'; port_name[3] <= '9'; port_name[3]++)
645 	{
646 		COMMCONFIG commconfig;
647 		DWORD size = sizeof(COMMCONFIG);
648 
649 		if(GetDefaultCommConfigA(port_name, &commconfig, &size))
650 		{
651 			port = port_name[3];
652 			break;
653 		}
654 	}
655 
656 	if(!port)
657 		trace("Could not find a valid COM port.  Some tests will be skipped.\n");
658 
659 	for(i = 0; i < TEST_COUNT; i++)
660 	{
661                 char string[sizeof(test[i].string)];
662 
663                 strcpy(string, test[i].string);
664 
665 		/* Check if this test case needs a valid COM port. */
666 		ptr = strstr(string, "COMx");
667 
668 		/* If required, substitute valid port number into device control string. */
669 		if(ptr)
670 		{
671 			if(port)
672 				ptr[3] = port;
673 			else
674 				continue;
675 		}
676 
677 		test_BuildCommDCBA(string, &test[i], 0x00, &test[i].dcb1);
678 		test_BuildCommDCBA(string, &test[i], 0xff, &test[i].dcb2);
679 		test_BuildCommDCBAndTimeoutsA(string, &test[i], 0x00, &test[i].dcb1, &test[i].timeouts1);
680 		test_BuildCommDCBAndTimeoutsA(string, &test[i], 0xff, &test[i].dcb2, &test[i].timeouts2);
681 
682 		test_BuildCommDCBW(string, &test[i], 0x00, &test[i].dcb1);
683 		test_BuildCommDCBW(string, &test[i], 0xff, &test[i].dcb2);
684 		test_BuildCommDCBAndTimeoutsW(string, &test[i], 0x00, &test[i].dcb1, &test[i].timeouts1);
685 		test_BuildCommDCBAndTimeoutsW(string, &test[i], 0xff, &test[i].dcb2, &test[i].timeouts2);
686 	}
687 }
688 
689 static HANDLE test_OpenComm(BOOL doOverlap)
690 {
691     HANDLE hcom = INVALID_HANDLE_VALUE;
692     char port_name[] = "COMx";
693     static BOOL shown = FALSE;
694     DWORD errors;
695     COMSTAT comstat;
696 
697     /* Try to find a port */
698     for(port_name[3] = '1'; port_name[3] <= '9'; port_name[3]++)
699     {
700 	hcom = CreateFileA( port_name, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
701 			   (doOverlap)?FILE_FLAG_OVERLAPPED:0, NULL );
702 	if (hcom != INVALID_HANDLE_VALUE)
703 	    break;
704     }
705     if(!shown)
706     {
707 	if (hcom == INVALID_HANDLE_VALUE)
708 	    trace("Could not find a valid COM port.\n");
709 	else
710 	    trace("Found Com port %s. Connected devices may disturb results\n", port_name);
711 	/*shown = TRUE; */
712     }
713     if (hcom != INVALID_HANDLE_VALUE)
714     {
715         BOOL ret;
716 
717         ret = ClearCommError(hcom, &errors, &comstat);
718         if (!ret && (GetLastError() == ERROR_NOT_READY || GetLastError() == ERROR_INVALID_HANDLE))
719         {
720             if (GetLastError() == ERROR_NOT_READY)
721                 trace("%s doesn't respond, skipping the test\n", port_name);
722             else
723                 trace("%s is not a real serial port, skipping the test\n", port_name);
724             CloseHandle(hcom);
725             return INVALID_HANDLE_VALUE;
726         }
727 
728         ok(ret, "Unexpected error %u on open\n", GetLastError());
729         ok(comstat.cbInQue == 0, "Unexpected %d chars in InQueue\n",comstat.cbInQue);
730         ok(comstat.cbOutQue == 0, "Still pending %d charcters in OutQueue\n", comstat.cbOutQue);
731         ok(errors == 0, "Unexpected errors 0x%08x\n", errors);
732     }
733     return hcom;
734 }
735 
736 static void test_GetModemStatus(HANDLE hcom)
737 {
738     DWORD ModemStat = 0;
739 
740     ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
741     trace("GetCommModemStatus returned 0x%08x->%s%s%s%s\n", ModemStat,
742 	  (ModemStat &MS_RLSD_ON)?"MS_RLSD_ON ":"",
743 	  (ModemStat &MS_RING_ON)?"MS_RING_ON ":"",
744 	  (ModemStat &MS_DSR_ON)?"MS_DSR_ON ":"",
745 	  (ModemStat &MS_CTS_ON)?"MS_CTS_ON ":"");
746 }
747 
748 /* When we don't write anything, Read should time out even on a loopbacked port */
749 static void test_ReadTimeOut(void)
750 {
751     HANDLE hcom;
752     DCB dcb;
753     COMMTIMEOUTS timeouts;
754     char rbuf[32];
755     DWORD before, after, read, timediff, LastError;
756     BOOL res;
757 
758     hcom = test_OpenComm(FALSE);
759     if (hcom == INVALID_HANDLE_VALUE) return;
760 
761     test_GetModemStatus(hcom);
762 
763     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
764     dcb.BaudRate = FASTBAUD;
765     dcb.ByteSize = 8;
766     dcb.Parity = NOPARITY;
767     dcb.fRtsControl=RTS_CONTROL_ENABLE;
768     dcb.fDtrControl=DTR_CONTROL_ENABLE;
769     dcb.StopBits = ONESTOPBIT;
770     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
771 
772     ZeroMemory( &timeouts, sizeof(timeouts));
773     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
774     ok(SetCommTimeouts(hcom, &timeouts),"SetCommTimeouts failed\n");
775 
776     before = GetTickCount();
777     SetLastError(0xdeadbeef);
778     res = ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL);
779     LastError = GetLastError();
780     after = GetTickCount();
781     ok( res == TRUE, "A timed-out read should return TRUE\n");
782     ok( LastError == 0xdeadbeef, "err=%d\n", LastError);
783     timediff = after - before;
784     ok( timediff > TIMEOUT>>2 && timediff < TIMEOUT *2,
785 	"Unexpected TimeOut %d, expected %d\n", timediff, TIMEOUT);
786 
787     CloseHandle(hcom);
788 }
789 
790 static void test_waittxempty(void)
791 {
792     HANDLE hcom;
793     DCB dcb;
794     COMMTIMEOUTS timeouts;
795     char tbuf[]="test_waittxempty";
796     DWORD before, after, bytes, timediff, evtmask, errors, i;
797     BOOL res;
798     DWORD baud = SLOWBAUD;
799     OVERLAPPED ovl_write, ovl_wait, ovl_wait2;
800     COMSTAT stat;
801 
802     hcom = test_OpenComm(TRUE);
803     if (hcom == INVALID_HANDLE_VALUE) return;
804 
805     /* set a low baud rate to have ample time*/
806     res = GetCommState(hcom, &dcb);
807     ok(res, "GetCommState error %d\n", GetLastError());
808     dcb.BaudRate = baud;
809     dcb.ByteSize = 8;
810     dcb.Parity = NOPARITY;
811     dcb.fRtsControl=RTS_CONTROL_ENABLE;
812     dcb.fDtrControl=DTR_CONTROL_ENABLE;
813     dcb.StopBits = ONESTOPBIT;
814     res = SetCommState(hcom, &dcb);
815     ok(res, "SetCommState error %d\n", GetLastError());
816 
817     ZeroMemory( &timeouts, sizeof(timeouts));
818     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
819     res = SetCommTimeouts(hcom, &timeouts);
820     ok(res,"SetCommTimeouts error %d\n", GetLastError());
821 
822     res = SetupComm(hcom, 1024, 1024);
823     ok(res, "SetUpComm error %d\n", GetLastError());
824 
825     /* calling SetCommMask after WriteFile leads to WaitCommEvent failures
826      * due to timeout (no events) under testbot VMs and VirtualBox
827      */
828     res = SetCommMask(hcom, EV_TXEMPTY);
829     ok(res, "SetCommMask error %d\n", GetLastError());
830 
831     SetLastError(0xdeadbeef);
832     res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, NULL);
833     ok(!res, "WriteFile on an overlapped handle without ovl structure should fail\n");
834     ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
835 
836     S(U(ovl_write)).Offset = 0;
837     S(U(ovl_write)).OffsetHigh = 0;
838     ovl_write.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
839     before = GetTickCount();
840     SetLastError(0xdeadbeef);
841     res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, &ovl_write);
842     after = GetTickCount();
843     ok((!res && GetLastError() == ERROR_IO_PENDING) || (res && bytes == sizeof(tbuf)),
844        "WriteFile returned %d, written %u bytes, error %d\n", res, bytes, GetLastError());
845     if (!res) ok(!bytes, "expected 0, got %u\n", bytes);
846     ok(after - before < 30, "WriteFile took %d ms to write %d Bytes at %d Baud\n",
847        after - before, bytes, baud);
848     /* don't wait for WriteFile completion */
849 
850     S(U(ovl_wait)).Offset = 0;
851     S(U(ovl_wait)).OffsetHigh = 0;
852     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
853     evtmask = 0;
854     before = GetTickCount();
855     SetLastError(0xdeadbeef);
856     res = WaitCommEvent(hcom, &evtmask, &ovl_wait);
857     ok(!res && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent error %d\n", GetLastError());
858     after = GetTickCount();
859     ok(after - before < 30, "WaitCommEvent should have returned immediately, took %d ms\n", after - before);
860     res = WaitForSingleObject(ovl_wait.hEvent, 1500);
861     ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
862     if (res == WAIT_OBJECT_0)
863     {
864         res = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
865         ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
866         ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
867         res = TRUE;
868     }
869     else
870     {
871         /* unblock pending wait */
872         trace("recovering after WAIT_TIMEOUT...\n");
873         res = SetCommMask(hcom, EV_TXEMPTY);
874         ok(res, "SetCommMask error %d\n", GetLastError());
875 
876         res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
877         ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
878 
879         res = FALSE;
880     }
881     after = GetTickCount();
882     ok(res, "WaitCommEvent error %d\n", GetLastError());
883     ok(evtmask & EV_TXEMPTY, "WaitCommEvent: expected EV_TXEMPTY, got %#x\n", evtmask);
884     CloseHandle(ovl_wait.hEvent);
885 
886     timediff = after - before;
887     trace("WaitCommEvent for EV_TXEMPTY took %d ms (timeout 1500)\n", timediff);
888     ok(timediff < 1200, "WaitCommEvent used %d ms for waiting\n", timediff);
889 
890     res = WaitForSingleObject(ovl_write.hEvent, 0);
891     ok(res == WAIT_OBJECT_0, "WriteFile failed with a timeout\n");
892     res = GetOverlappedResult(hcom, &ovl_write, &bytes, FALSE);
893     ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
894     ok(bytes == sizeof(tbuf), "expected %u, written %u\n", (UINT)sizeof(tbuf), bytes);
895     CloseHandle(ovl_write.hEvent);
896 
897     CloseHandle(hcom);
898 
899     for (i = 0; i < 2; i++)
900     {
901         hcom = test_OpenComm(TRUE);
902         if (hcom == INVALID_HANDLE_VALUE) return;
903 
904         res = SetCommMask(hcom, EV_TXEMPTY);
905         ok(res, "SetCommMask error %d\n", GetLastError());
906 
907         if (i == 0)
908         {
909             S(U(ovl_write)).Offset = 0;
910             S(U(ovl_write)).OffsetHigh = 0;
911             ovl_write.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
912             before = GetTickCount();
913             SetLastError(0xdeadbeef);
914             res = WriteFile(hcom, tbuf, sizeof(tbuf), &bytes, &ovl_write);
915             ok((!res && GetLastError() == ERROR_IO_PENDING) || (res && bytes == sizeof(tbuf)),
916                "WriteFile returned %d, written %u bytes, error %d\n", res, bytes, GetLastError());
917             if (!res) ok(!bytes, "expected 0, got %u\n", bytes);
918 
919             ClearCommError(hcom, &errors, &stat);
920             ok(stat.cbInQue == 0, "InQueue should be empty, got %d bytes\n", stat.cbInQue);
921             ok(stat.cbOutQue != 0 || broken(stat.cbOutQue == 0) /* VM */, "OutQueue should not be empty\n");
922             ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
923 
924             res = GetOverlappedResult(hcom, &ovl_write, &bytes, TRUE);
925             ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
926             ok(bytes == sizeof(tbuf), "expected %u, written %u\n", (UINT)sizeof(tbuf), bytes);
927             CloseHandle(ovl_write.hEvent);
928 
929             res = FlushFileBuffers(hcom);
930             ok(res, "FlushFileBuffers error %d\n", GetLastError());
931         }
932 
933         ClearCommError(hcom, &errors, &stat);
934         ok(stat.cbInQue == 0, "InQueue should be empty, got %d bytes\n", stat.cbInQue);
935         ok(stat.cbOutQue == 0, "OutQueue should be empty, got %d bytes\n", stat.cbOutQue);
936         ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
937 
938         S(U(ovl_wait)).Offset = 0;
939         S(U(ovl_wait)).OffsetHigh = 0;
940         ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
941         evtmask = 0;
942         SetLastError(0xdeadbeef);
943         res = WaitCommEvent(hcom, &evtmask, &ovl_wait);
944         ok(res /* busy system */ || GetLastError() == ERROR_IO_PENDING,
945            "%d: WaitCommEvent error %d\n", i, GetLastError());
946 
947         res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
948         if (i == 0)
949             ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
950         else
951             ok(res == WAIT_TIMEOUT, "WaitCommEvent should fail with a timeout\n");
952         if (res == WAIT_OBJECT_0)
953         {
954             res = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
955             ok(res, "GetOverlappedResult reported error %d\n", GetLastError());
956             ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
957             ok(res, "WaitCommEvent error %d\n", GetLastError());
958             ok(evtmask & EV_TXEMPTY, "WaitCommEvent: expected EV_TXEMPTY, got %#x\n", evtmask);
959         }
960         else
961         {
962             ok(!evtmask, "WaitCommEvent: expected 0, got %#x\n", evtmask);
963 
964             S(U(ovl_wait2)).Offset = 0;
965             S(U(ovl_wait2)).OffsetHigh = 0;
966             ovl_wait2.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
967             SetLastError(0xdeadbeef);
968             res = WaitCommEvent(hcom, &evtmask, &ovl_wait2);
969             ok(!res, "WaitCommEvent should fail if there is a pending wait\n");
970             ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
971             CloseHandle(ovl_wait2.hEvent);
972 
973             /* unblock pending wait */
974             trace("recovering after WAIT_TIMEOUT...\n");
975             res = SetCommMask(hcom, EV_TXEMPTY);
976             ok(res, "SetCommMask error %d\n", GetLastError());
977 
978             res = WaitForSingleObject(ovl_wait.hEvent, TIMEOUT);
979             ok(res == WAIT_OBJECT_0, "WaitCommEvent failed with a timeout\n");
980             CloseHandle(ovl_wait.hEvent);
981         }
982 
983         CloseHandle(hcom);
984     }
985 }
986 
987 /* A new open handle should not return error or have bytes in the Queues */
988 static void test_ClearCommError(void)
989 {
990     HANDLE hcom;
991     DWORD  errors;
992     COMSTAT lpStat;
993 
994     hcom = test_OpenComm(FALSE);
995     if (hcom == INVALID_HANDLE_VALUE) return;
996 
997     ok(ClearCommError(hcom, &errors, &lpStat), "ClearCommError failed\n");
998     ok(lpStat.cbInQue == 0, "Unexpected %d chars in InQueue\n", lpStat.cbInQue);
999     ok(lpStat.cbOutQue == 0, "Unexpected %d chars in OutQueue\n", lpStat.cbOutQue);
1000     ok(errors == 0, "ClearCommErrors: Unexpected error 0x%08x\n", errors);
1001 
1002     CloseHandle(hcom);
1003 }
1004 
1005 static void test_non_pending_errors(void)
1006 {
1007     HANDLE hcom;
1008     DCB dcb;
1009     DWORD err;
1010 
1011     hcom = test_OpenComm(FALSE);
1012     if (hcom == INVALID_HANDLE_VALUE) return;
1013 
1014     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1015     dcb.ByteSize = 255; /* likely bogus */
1016     ok(!SetCommState(hcom, &dcb), "SetCommState should have failed\n");
1017     ok(ClearCommError(hcom, &err, NULL), "ClearCommError should succeed\n");
1018     ok(!(err & CE_MODE), "ClearCommError shouldn't set CE_MODE byte in this case (%x)\n", err);
1019 
1020     CloseHandle(hcom);
1021 }
1022 
1023 static void test_LoopbackRead(void)
1024 {
1025     HANDLE hcom;
1026     DCB dcb;
1027     COMMTIMEOUTS timeouts;
1028     char rbuf[32];
1029     DWORD before, after, diff, read, read1, written, evtmask=0, i;
1030     BOOL res;
1031     char tbuf[]="test_LoopbackRead";
1032 
1033     if (!loopback_txd_rxd) return;
1034 
1035     hcom = test_OpenComm(FALSE);
1036     if (hcom == INVALID_HANDLE_VALUE) return;
1037 
1038     trace("Starting test_LoopbackRead\n");
1039     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1040     dcb.BaudRate = FASTBAUD;
1041     dcb.ByteSize = 8;
1042     dcb.Parity = NOPARITY;
1043     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1044     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1045     dcb.StopBits = ONESTOPBIT;
1046     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1047 
1048     ZeroMemory( &timeouts, sizeof(timeouts));
1049     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
1050     ok(SetCommTimeouts(hcom, &timeouts),"SetCommTimeouts failed\n");
1051 
1052     ok(SetCommMask(hcom, EV_TXEMPTY), "SetCommMask failed\n");
1053 
1054     before = GetTickCount();
1055     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1056     after = GetTickCount();
1057     ok(written == sizeof(tbuf),"WriteFile %d bytes written\n", written);
1058     diff = after -before;
1059 
1060     /* make sure all bytes are written, so Readfile will succeed in one call*/
1061     ok(WaitCommEvent(hcom, &evtmask, NULL), "WaitCommEvent failed\n");
1062     before = GetTickCount();
1063     ok(evtmask == EV_TXEMPTY,
1064                  "WaitCommEvent: Unexpected EvtMask 0x%08x, expected 0x%08x\n",
1065 		 evtmask, EV_TXEMPTY);
1066     trace("Write %d ms WaitCommEvent EV_TXEMPTY %d ms\n", diff, before- after);
1067 
1068     read=0;
1069     ok(ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL), "Readfile failed\n");
1070     ok(read == sizeof(tbuf),"ReadFile read %d bytes, expected \"%s\"\n", read,rbuf);
1071 
1072     /* Now do the same with a slower Baud rate.
1073        As we request more characters than written, we will hit the timeout
1074     */
1075 
1076     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1077     dcb.BaudRate = 9600;
1078     dcb.ByteSize = 8;
1079     dcb.Parity = NOPARITY;
1080     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1081     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1082     dcb.StopBits = ONESTOPBIT;
1083     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1084 
1085     ok(SetCommMask(hcom, EV_RXCHAR), "SetCommMask failed\n");
1086     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1087     ok(written == sizeof(tbuf),"WriteFile %d bytes written\n", written);
1088 
1089     trace("WaitCommEventEV_RXCHAR\n");
1090     ok(WaitCommEvent(hcom, &evtmask, NULL), "WaitCommEvent failed\n");
1091     ok(evtmask == EV_RXCHAR, "WaitCommEvent: Unexpected EvtMask 0x%08x, expected 0x%08x\n",
1092        evtmask, EV_RXCHAR);
1093 
1094     before = GetTickCount();
1095     res = ReadFile(hcom, rbuf, sizeof(rbuf), &read, NULL);
1096     after = GetTickCount();
1097     ok(res, "Readfile failed\n");
1098     ok(read == sizeof(tbuf),"ReadFile read %d bytes\n", read);
1099     diff = after - before;
1100     trace("Readfile for %d chars took %d ms\n", read, diff);
1101     ok( (diff > TIMEOUT - TIMEDELTA) && (diff < TIMEOUT + TIMEDELTA),
1102 	"Timedout Wait took %d ms, expected around %d\n", diff, TIMEOUT);
1103 
1104     /* now do a plain read with slow speed
1105      * This will result in several low level reads and a timeout to happen
1106      */
1107     dcb.BaudRate = SLOWBAUD;
1108     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1109     ok(WriteFile(hcom,tbuf,sizeof(tbuf),&written, NULL), "WriteFile failed\n");
1110     before = GetTickCount();
1111     read = 0;
1112     read1 =0;
1113     i=0;
1114     do
1115     {
1116 	res = ReadFile(hcom, rbuf+read, sizeof(rbuf)-read, &read1, NULL);
1117 	ok(res, "Readfile failed\n");
1118 	read += read1;
1119 	i++;
1120     }
1121     while ((read < sizeof(tbuf)) && (i <10));
1122     after =  GetTickCount();
1123     ok( read == sizeof(tbuf),"ReadFile read %d bytes\n", read);
1124     trace("Plain Read for %d char at %d baud took %d ms\n", read, SLOWBAUD, after-before);
1125 
1126     CloseHandle(hcom);
1127 }
1128 
1129 static void test_LoopbackCtsRts(void)
1130 {
1131     HANDLE hcom;
1132     DWORD ModemStat = 0, defaultStat = 0;
1133     DCB dcb;
1134 
1135     if (!loopback_rts_cts) return;
1136 
1137     hcom = test_OpenComm(FALSE);
1138     if (hcom == INVALID_HANDLE_VALUE) return;
1139 
1140     memset (&dcb, 0, sizeof (dcb));
1141     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1142     if (dcb.fRtsControl == RTS_CONTROL_HANDSHAKE)
1143     {
1144 	trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate RTS\n");
1145 	CloseHandle(hcom);
1146 	return;
1147     }
1148     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1149     /* XP returns some values in the low nibble, so mask them out*/
1150     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1151     if(defaultStat & MS_CTS_ON)
1152     {
1153 	ok(EscapeCommFunction(hcom, CLRRTS), "EscapeCommFunction failed to clear RTS\n");
1154 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1155 	ok ((ModemStat & MS_CTS_ON) == 0, "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1156 	    ModemStat, (defaultStat & ~MS_CTS_ON));
1157 	ok(EscapeCommFunction(hcom, SETRTS), "EscapeCommFunction failed to clear RTS\n");
1158 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1159 	ok (ModemStat ==  defaultStat, "Failed to restore CTS: 0x%04x, expected 0x%04x\n",
1160 	    ModemStat, defaultStat);
1161     }
1162     else
1163     {
1164 	ok(EscapeCommFunction(hcom, SETRTS), "EscapeCommFunction failed to set RTS\n");
1165 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1166 	ok ((ModemStat & MS_CTS_ON) == MS_CTS_ON,
1167             "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1168 	    ModemStat, (defaultStat | MS_CTS_ON));
1169 	ok(EscapeCommFunction(hcom, CLRRTS), "EscapeCommFunction failed to clear RTS\n");
1170 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1171 	ok (ModemStat ==  defaultStat, "Failed to restore CTS: 0x%04x, expected 0x%04x\n",
1172 	    ModemStat, defaultStat);
1173     }
1174 
1175     CloseHandle(hcom);
1176 }
1177 
1178 static void test_LoopbackDtrDcd(void)
1179 {
1180     HANDLE hcom;
1181     DWORD ModemStat = 0, defaultStat = 0;
1182     DCB dcb;
1183 
1184     if (!loopback_dtr_dcd) return;
1185 
1186     hcom = test_OpenComm(FALSE);
1187     if (hcom == INVALID_HANDLE_VALUE) return;
1188 
1189     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1190     if (dcb.fDtrControl == DTR_CONTROL_HANDSHAKE)
1191     {
1192 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1193         CloseHandle(hcom);
1194 	return;
1195     }
1196     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1197     /* XP returns some values in the low nibble, so mask them out*/
1198     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1199     if(defaultStat & MS_RLSD_ON)
1200     {
1201 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1202 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1203 	ok ((ModemStat & MS_RLSD_ON) == 0, "RLSD didn't react: 0x%04x,  expected 0x%04x\n",
1204 	    ModemStat, (defaultStat & ~MS_RLSD_ON));
1205 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1206 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1207 	ok (ModemStat ==  defaultStat, "Failed to restore RLSD: 0x%04x, expected 0x%04x\n",
1208 	    ModemStat, defaultStat);
1209     }
1210     else
1211     {
1212 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1213 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1214 	ok ((ModemStat & MS_RLSD_ON) == MS_RLSD_ON,
1215             "RLSD didn't react: 0x%04x,  expected 0x%04x\n",
1216 	    ModemStat, (defaultStat | MS_RLSD_ON));
1217 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1218 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1219 	ok (ModemStat ==  defaultStat, "Failed to restore RLSD: 0x%04x, expected 0x%04x\n",
1220 	    ModemStat, defaultStat);
1221     }
1222 
1223     CloseHandle(hcom);
1224 }
1225 
1226 static void test_LoopbackDtrDsr(void)
1227 {
1228     HANDLE hcom;
1229     DWORD ModemStat = 0, defaultStat = 0;
1230     DCB dcb;
1231 
1232     if (!loopback_dtr_dsr) return;
1233 
1234     hcom = test_OpenComm(FALSE);
1235     if (hcom == INVALID_HANDLE_VALUE) return;
1236 
1237     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1238     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1239     {
1240 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1241         CloseHandle(hcom);
1242 	return;
1243     }
1244     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1245     /* XP returns some values in the low nibble, so mask them out*/
1246     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1247     if(defaultStat & MS_DSR_ON)
1248     {
1249 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1250 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1251 	ok ((ModemStat & MS_DSR_ON) == 0, "CTS didn't react: 0x%04x,  expected 0x%04x\n",
1252 	    ModemStat, (defaultStat & ~MS_DSR_ON));
1253 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to clear DTR\n");
1254 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1255 	ok (ModemStat ==  defaultStat, "Failed to restore DSR: 0x%04x, expected 0x%04x\n",
1256 	    ModemStat, defaultStat);
1257     }
1258     else
1259     {
1260 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1261 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1262 	ok ((ModemStat & MS_DSR_ON) == MS_DSR_ON,
1263             "CTS didn't react: 0x%04x,expected 0x%04x\n",
1264 	    ModemStat, (defaultStat | MS_DSR_ON));
1265 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1266 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1267 	ok (ModemStat ==  defaultStat, "Failed to restore DSR: 0x%04x, expected 0x%04x\n",
1268 	    ModemStat, defaultStat);
1269     }
1270 
1271     CloseHandle(hcom);
1272 }
1273 
1274 static void test_LoopbackDtrRing(void)
1275 {
1276     HANDLE hcom;
1277     DWORD ModemStat = 0, defaultStat = 0;
1278     DCB dcb;
1279 
1280     if (!loopback_dtr_ring) return;
1281 
1282     hcom = test_OpenComm(FALSE);
1283     if (hcom == INVALID_HANDLE_VALUE) return;
1284 
1285     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1286     if (dcb.fDtrControl == DTR_CONTROL_HANDSHAKE)
1287     {
1288 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1289 	CloseHandle(hcom);
1290 	return;
1291     }
1292     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1293     /* XP returns some values in the low nibble, so mask them out*/
1294     defaultStat &= MS_CTS_ON|MS_DSR_ON|MS_RING_ON|MS_RLSD_ON;
1295     if(defaultStat & MS_RING_ON)
1296     {
1297 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1298 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1299 	ok ((ModemStat & MS_RING_ON) == 0, "RING didn't react: 0x%04x,  expected 0x%04x\n",
1300 	    ModemStat, (defaultStat & ~MS_RING_ON));
1301 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1302 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1303 	ok (ModemStat ==  defaultStat, "Failed to restore RING: 0x%04x, expected 0x%04x\n",
1304 	    ModemStat, defaultStat);
1305     }
1306     else
1307     {
1308 	ok(EscapeCommFunction(hcom, SETDTR), "EscapeCommFunction failed to set DTR\n");
1309 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1310 	ok ((ModemStat & MS_RING_ON) == MS_RING_ON,
1311             "RING didn't react: 0x%04x,expected 0x%04x\n",
1312 	    ModemStat, (defaultStat | MS_RING_ON));
1313 	ok(EscapeCommFunction(hcom, CLRDTR), "EscapeCommFunction failed to clear DTR\n");
1314 	ok(GetCommModemStatus(hcom, &ModemStat), "GetCommModemStatus failed\n");
1315 	ok (ModemStat ==  defaultStat, "Failed to restore RING: 0x%04x, expected 0x%04x\n",
1316 	    ModemStat, defaultStat);
1317     }
1318 
1319     CloseHandle(hcom);
1320 }
1321 
1322 /*
1323  * Set up a WaitCommEvent for anything in the receive buffer,
1324  * then write to TX to put a character
1325  * into the RX buffer
1326  * Need Loopback TX->RX
1327 */
1328 
1329 static void test_WaitRx(void)
1330 {
1331     OVERLAPPED overlapped, overlapped_w;
1332     HANDLE hcom, hComPortEvent, hComWriteEvent;
1333     DWORD before, after, after1, diff, success_wait = FALSE, success_write;
1334     DWORD err_wait, err_write, written, evtmask=0;
1335 
1336     if (!loopback_txd_rxd) return;
1337 
1338     hcom = test_OpenComm(TRUE);
1339     if (hcom == INVALID_HANDLE_VALUE) return;
1340 
1341     ok(SetCommMask(hcom, EV_RXCHAR), "SetCommMask failed\n");
1342     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1343     ok(hComPortEvent != 0, "CreateEvent failed\n");
1344     ZeroMemory( &overlapped, sizeof(overlapped));
1345     overlapped.hEvent = hComPortEvent;
1346 
1347     hComWriteEvent = CreateEventW( NULL, TRUE, FALSE, NULL );
1348     ok(hComWriteEvent != NULL, "CreateEvent res %d\n", GetLastError());
1349     ZeroMemory( &overlapped_w, sizeof(overlapped_w));
1350     overlapped_w.hEvent = hComWriteEvent;
1351 
1352     before = GetTickCount();
1353     success_wait = WaitCommEvent(hcom, &evtmask, &overlapped);
1354     err_wait = GetLastError();
1355     after = GetTickCount();
1356     trace("Success 0x%08x err %d evtmask 0x%08x\n", success_wait, err_wait, evtmask);
1357     ok(success_wait || err_wait == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1358     trace("overlapped WaitCommEvent returned.\n");
1359 
1360     success_write= WriteFile(hcom, "X", 1, &written, &overlapped_w);
1361     err_write = GetLastError();
1362     ok(success_write || err_write == ERROR_IO_PENDING,
1363        "overlapped WriteFile failed, err %d\n",
1364        err_write);
1365 
1366     if (!success_write && (err_write == ERROR_IO_PENDING)) {
1367       success_write = WaitForSingleObjectEx(hComWriteEvent, TIMEOUT, TRUE);
1368       err_write = GetLastError();
1369       ok(success_write == WAIT_OBJECT_0, "WaitForSingleObjectEx, res %d, err %d\n",
1370 	 success_write, err_write);
1371     }
1372     Sleep(TIMEOUT >>1);
1373     success_write = GetOverlappedResult(hcom, &overlapped_w, &written, FALSE);
1374     err_write = GetLastError();
1375 
1376     trace("Write after Wait res 0x%08x err %d\n",success_write, err_write);
1377     ok(success_write && written ==1, "Write after Wait res 0x%08x err %d\n",
1378        success_write, err_write);
1379 
1380     if (!success_wait && (err_wait == ERROR_IO_PENDING)) {
1381       success_wait = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1382       err_wait = GetLastError();
1383       ok(success_wait == WAIT_OBJECT_0, "wait hComPortEvent, res 0x%08x, err %d\n",
1384 	 success_wait, err_wait);
1385     }
1386     success_wait = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1387     err_wait = GetLastError();
1388     after1 = GetTickCount();
1389     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1390 	  success_wait, err_wait, evtmask, after-before, after1-before);
1391 
1392     ok(evtmask & EV_RXCHAR, "Detect  EV_RXCHAR: 0x%08x, expected 0x%08x\n",
1393        evtmask, EV_RXCHAR);
1394     diff = after1 - before;
1395     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1396 	"Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1397 
1398     CloseHandle(hcom);
1399 }
1400 
1401 /* Change the controlling line after the given timeout to the given state
1402    By the loopback, this should trigger the WaitCommEvent
1403 */
1404 static DWORD CALLBACK toggle_ctlLine(LPVOID arg)
1405 {
1406     DWORD_PTR *args = arg;
1407     DWORD timeout = args[0];
1408     DWORD ctl     = args[1];
1409     HANDLE hcom   = (HANDLE) args[2];
1410     HANDLE hComPortEvent = (HANDLE) args[3];
1411     DWORD success, err;
1412 
1413     trace("toggle_ctlLine timeout %d ctl 0x%08x handle %p\n", timeout, ctl, hcom );
1414     Sleep(timeout);
1415     ok(EscapeCommFunction(hcom, ctl),"EscapeCommFunction 0x%08x failed\n", ctl);
1416     trace("toggle_ctline done\n");
1417     success = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1418     err = GetLastError();
1419     trace("toggle_ctline WaitForSingleObjectEx res 0x%08x err %d\n",
1420 	  success, err);
1421     return 0;
1422 }
1423 
1424 /*
1425  * Wait for a change in CTS
1426  * Needs Loopback from DTR to CTS
1427  */
1428 static void test_WaitCts(void)
1429 {
1430     DCB dcb;
1431     OVERLAPPED overlapped;
1432     HANDLE hcom, hComPortEvent, alarmThread;
1433     DWORD_PTR args[4];
1434     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1435 
1436     if (!loopback_rts_cts) return;
1437 
1438     hcom = test_OpenComm(TRUE);
1439     if (hcom == INVALID_HANDLE_VALUE) return;
1440 
1441     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1442     dcb.fRtsControl=RTS_CONTROL_ENABLE;
1443     dcb.fDtrControl=DTR_CONTROL_ENABLE;
1444     ok(SetCommState(hcom, &dcb), "SetCommState failed\n");
1445     if (dcb.fDtrControl == RTS_CONTROL_DISABLE)
1446     {
1447 	trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1448         CloseHandle(hcom);
1449 	return;
1450     }
1451     args[0]= TIMEOUT >>1;
1452     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1453     if(defaultStat & MS_CTS_ON)
1454 	args[1] = CLRRTS;
1455     else
1456 	args[1] = SETRTS;
1457     args[2]=(DWORD_PTR)hcom;
1458 
1459     trace("test_WaitCts timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1460 
1461     ok(SetCommMask(hcom, EV_CTS), "SetCommMask failed\n");
1462     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1463     ok(hComPortEvent != 0, "CreateEvent failed\n");
1464     args[3] = (DWORD_PTR)hComPortEvent;
1465     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1466     /* Wait a minimum to let the thread start up */
1467     Sleep(10);
1468     trace("Thread created\n");
1469     ok(alarmThread !=0 , "CreateThread Failed\n");
1470 
1471     ZeroMemory( &overlapped, sizeof(overlapped));
1472     overlapped.hEvent = hComPortEvent;
1473     before = GetTickCount();
1474     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1475     err = GetLastError();
1476     after = GetTickCount();
1477 
1478     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1479     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1480     trace("overlapped WaitCommEvent returned.\n");
1481     if (!success && (err == ERROR_IO_PENDING))
1482 	ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1483 		     "WaitCts hComPortEvent failed\n");
1484     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1485     err = GetLastError();
1486     after1 = GetTickCount();
1487     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1488 	  success, err, evtmask, after-before, after1-before);
1489 
1490     ok(evtmask & EV_CTS, "Failed to detect  EV_CTS: 0x%08x, expected 0x%08x\n",
1491 		 evtmask, EV_CTS);
1492     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1493     if(defaultStat & MS_CTS_ON)
1494 	ok((evtmask & MS_CTS_ON) == 0,"CTS didn't change state!\n");
1495     else
1496 	ok((evtmask & MS_CTS_ON), "CTS didn't change state!\n");
1497 
1498     diff = after1 - before;
1499     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1500                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1501 
1502     /*restore RTS Settings*/
1503     if(defaultStat & MS_CTS_ON)
1504 	args[1] = SETRTS;
1505     else
1506 	args[1] = CLRRTS;
1507 
1508     CloseHandle(hcom);
1509 }
1510 
1511 /* Change the  Comm Mask while a Wait is going on
1512    WaitCommevent should return with a EVTMASK set to zero
1513 */
1514 static DWORD CALLBACK reset_CommMask(LPVOID arg)
1515 {
1516     DWORD_PTR *args = arg;
1517     DWORD timeout = args[0];
1518     HANDLE hcom   = (HANDLE) args[1];
1519 
1520     trace(" Changing CommMask on the fly for handle %p after timeout %d\n",
1521 	  hcom, timeout);
1522     Sleep(timeout);
1523     ok(SetCommMask(hcom, 0),"SetCommMask %p failed\n", hcom);
1524     trace("SetCommMask changed\n");
1525     return 0;
1526 }
1527 
1528 /* Set up a Wait for a change on CTS. We don't toggle any line, but we
1529    reset the CommMask and expect the wait to return with a mask of 0
1530    No special port connections needed
1531 */
1532 static void test_AbortWaitCts(void)
1533 {
1534     DCB dcb;
1535     OVERLAPPED overlapped;
1536     HANDLE hcom, hComPortEvent, alarmThread;
1537     DWORD_PTR args[2];
1538     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0;
1539 
1540     hcom = test_OpenComm(TRUE);
1541     if (hcom == INVALID_HANDLE_VALUE) return;
1542 
1543     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1544     if (dcb.fDtrControl == RTS_CONTROL_DISABLE)
1545     {
1546 	trace("RTS_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1547         CloseHandle(hcom);
1548 	return;
1549     }
1550     args[0]= TIMEOUT >>1;
1551     args[1]= (DWORD_PTR)hcom;
1552 
1553     trace("test_AbortWaitCts timeout %ld handle %p\n",args[0], hcom);
1554 
1555     ok(SetCommMask(hcom, EV_CTS), "SetCommMask failed\n");
1556     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1557     ok(hComPortEvent != 0, "CreateEvent failed\n");
1558     alarmThread = CreateThread(NULL, 0, reset_CommMask, args, 0, &alarmThreadId);
1559     /* Wait a minimum to let the thread start up */
1560     Sleep(10);
1561     trace("Thread created\n");
1562     ok(alarmThread !=0 , "CreateThread Failed\n");
1563 
1564     ZeroMemory( &overlapped, sizeof(overlapped));
1565     overlapped.hEvent = hComPortEvent;
1566     before = GetTickCount();
1567     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1568     err = GetLastError();
1569     after = GetTickCount();
1570 
1571     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1572     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1573     trace("overlapped WaitCommEvent returned.\n");
1574     if (!success && (err == ERROR_IO_PENDING))
1575 	ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1576 		     "AbortWaitCts hComPortEvent failed\n");
1577     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1578     err = GetLastError();
1579     after1 = GetTickCount();
1580     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1581 	  success, err, evtmask, after-before, after1-before);
1582 
1583     ok(evtmask == 0, "Incorrect EventMask 0x%08x returned on Wait aborted bu SetCommMask, expected 0x%08x\n",
1584 		 evtmask, 0);
1585     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1586     diff = after1 - before;
1587     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1588                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1589 
1590     CloseHandle(hcom);
1591 }
1592 
1593 /*
1594  * Wait for a change in DSR
1595  * Needs Loopback from DTR to DSR
1596  */
1597 static void test_WaitDsr(void)
1598 {
1599     DCB dcb;
1600     OVERLAPPED overlapped;
1601     HANDLE hcom, hComPortEvent, alarmThread;
1602     DWORD_PTR args[3];
1603     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1604 
1605     if (!loopback_dtr_dsr) return;
1606 
1607     hcom = test_OpenComm(TRUE);
1608     if (hcom == INVALID_HANDLE_VALUE) return;
1609 
1610     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1611     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1612     {
1613 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1614         CloseHandle(hcom);
1615 	return;
1616     }
1617     args[0]= TIMEOUT >>1;
1618     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1619     if(defaultStat & MS_DSR_ON)
1620 	args[1] = CLRDTR;
1621     else
1622 	args[1] = SETDTR;
1623     args[2]= (DWORD_PTR)hcom;
1624 
1625     trace("test_WaitDsr timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1626 
1627     ok(SetCommMask(hcom, EV_DSR), "SetCommMask failed\n");
1628     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1629     ok(hComPortEvent != 0, "CreateEvent failed\n");
1630     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1631     ok(alarmThread !=0 , "CreateThread Failed\n");
1632 
1633     ZeroMemory( &overlapped, sizeof(overlapped));
1634     overlapped.hEvent = hComPortEvent;
1635     before = GetTickCount();
1636     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1637     err = GetLastError();
1638     after = GetTickCount();
1639 
1640     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1641     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1642     trace("overlapped WaitCommEvent returned.\n");
1643     if (!success && (err == ERROR_IO_PENDING))
1644 	ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1645 		     "wait hComPortEvent failed\n");
1646     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1647     err = GetLastError();
1648     after1 = GetTickCount();
1649     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1650 	  success, err, evtmask, after-before, after1-before);
1651 
1652     ok(evtmask & EV_DSR, "Failed to detect  EV_DSR: 0x%08x, expected 0x%08x\n",
1653 		 evtmask, EV_DSR);
1654     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1655     if(defaultStat & MS_DSR_ON)
1656 	ok((evtmask & MS_DSR_ON) == 0,"DTR didn't change state!\n");
1657     else
1658 	ok((evtmask & MS_DSR_ON), "DTR didn't change state!\n");
1659 
1660     diff = after1 - before;
1661     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1662                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1663 
1664     /*restore RTS Settings*/
1665     if(defaultStat & MS_DSR_ON)
1666 	args[1] = SETDTR;
1667     else
1668 	args[1] = CLRDTR;
1669 
1670     CloseHandle(hcom);
1671 }
1672 
1673 /*
1674  * Wait for a Ring
1675  * Needs Loopback from DTR to RING
1676  */
1677 static void test_WaitRing(void)
1678 {
1679     DCB dcb;
1680     OVERLAPPED overlapped;
1681     HANDLE hcom, hComPortEvent, alarmThread;
1682     DWORD_PTR args[3];
1683     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat;
1684     BOOL ret;
1685 
1686     if (!loopback_dtr_ring) return;
1687 
1688     hcom = test_OpenComm(TRUE);
1689     if (hcom == INVALID_HANDLE_VALUE) return;
1690 
1691     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1692     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1693     {
1694 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1695         CloseHandle(hcom);
1696 	return;
1697     }
1698     args[0]= TIMEOUT >>1;
1699     ok((ret = GetCommModemStatus(hcom, &defaultStat)), "GetCommModemStatus failed\n");
1700     if (!ret) {
1701 	skip("modem status failed -> skip.\n");
1702 	CloseHandle(hcom);
1703 	return;
1704     }
1705     if(defaultStat & MS_RING_ON)
1706 	args[1] = CLRDTR;
1707     else
1708 	args[1] = SETDTR;
1709     args[2]=(DWORD_PTR) hcom;
1710 
1711     trace("test_WaitRing timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1712 
1713     ok(SetCommMask(hcom, EV_RING), "SetCommMask failed\n");
1714     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1715     ok(hComPortEvent != 0, "CreateEvent failed\n");
1716     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1717     ok(alarmThread !=0 , "CreateThread Failed\n");
1718 
1719     ZeroMemory( &overlapped, sizeof(overlapped));
1720     overlapped.hEvent = hComPortEvent;
1721     before = GetTickCount();
1722     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1723     err = GetLastError();
1724     after = GetTickCount();
1725 
1726     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1727     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1728     trace("overlapped WaitCommEvent returned.\n");
1729     if (!success && (err == ERROR_IO_PENDING))
1730 	ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1731 		     "wait hComPortEvent failed\n");
1732     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1733     err = GetLastError();
1734     after1 = GetTickCount();
1735     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1736 	  success, err, evtmask, after-before, after1-before);
1737 
1738     ok(evtmask & EV_RING, "Failed to detect  EV_RING: 0x%08x, expected 0x%08x\n",
1739        evtmask, EV_RING);
1740     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1741     if(defaultStat & MS_RING_ON)
1742 	ok((evtmask & MS_RING_ON) == 0,"DTR didn't change state!\n");
1743     else
1744 	ok((evtmask & MS_RING_ON), "DTR didn't change state!\n");
1745 
1746     diff = after1 - before;
1747     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1748                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1749 
1750     /*restore RTS Settings*/
1751     if(defaultStat & MS_RING_ON)
1752 	args[1] = SETDTR;
1753     else
1754 	args[1] = CLRDTR;
1755 
1756     CloseHandle(hcom);
1757 }
1758 /*
1759  * Wait for a change in DCD
1760  * Needs Loopback from DTR to DCD
1761  */
1762 static void test_WaitDcd(void)
1763 {
1764     DCB dcb;
1765     OVERLAPPED overlapped;
1766     HANDLE hcom, hComPortEvent, alarmThread;
1767     DWORD_PTR args[3];
1768     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0, defaultStat = 0;
1769 
1770     if (!loopback_dtr_dcd) return;
1771 
1772     hcom = test_OpenComm(TRUE);
1773     if (hcom == INVALID_HANDLE_VALUE) return;
1774 
1775     ok(GetCommState(hcom, &dcb), "GetCommState failed\n");
1776     if (dcb.fDtrControl == DTR_CONTROL_DISABLE)
1777     {
1778 	trace("DTR_CONTROL_HANDSHAKE is set, so don't manipulate DTR\n");
1779 	CloseHandle(hcom);
1780 	return;
1781     }
1782     args[0]= TIMEOUT >>1;
1783     ok(GetCommModemStatus(hcom, &defaultStat), "GetCommModemStatus failed\n");
1784     if(defaultStat & MS_RLSD_ON)
1785 	args[1] = CLRDTR;
1786     else
1787 	args[1] = SETDTR;
1788     args[2]= (DWORD_PTR)hcom;
1789 
1790     trace("test_WaitDcd timeout %ld clt 0x%08lx handle %p\n",args[0], args[1], hcom);
1791 
1792     ok(SetCommMask(hcom, EV_RLSD), "SetCommMask failed\n");
1793     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1794     ok(hComPortEvent != 0, "CreateEvent failed\n");
1795     alarmThread = CreateThread(NULL, 0, toggle_ctlLine, args, 0, &alarmThreadId);
1796     ok(alarmThread !=0 , "CreateThread Failed\n");
1797 
1798     ZeroMemory( &overlapped, sizeof(overlapped));
1799     overlapped.hEvent = hComPortEvent;
1800     before = GetTickCount();
1801     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1802     err = GetLastError();
1803     after = GetTickCount();
1804 
1805     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1806     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1807     trace("overlapped WaitCommEvent returned.\n");
1808     if (!success && (err == ERROR_IO_PENDING))
1809 	ok(WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE) == 0,
1810 		     "wait hComPortEvent failed\n");
1811     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1812     err = GetLastError();
1813     after1 = GetTickCount();
1814     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1815 	  success, err, evtmask, after-before, after1-before);
1816 
1817     ok(evtmask & EV_RLSD, "Failed to detect  EV_RLSD: 0x%08x, expected 0x%08x\n",
1818 		 evtmask, EV_RLSD);
1819     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1820     if(defaultStat & MS_RLSD_ON)
1821 	ok((evtmask & MS_RLSD_ON) == 0,"DTR didn't change state!\n");
1822     else
1823 	ok((evtmask & MS_RLSD_ON), "DTR didn't change state!\n");
1824 
1825     diff = after1 - before;
1826     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1827                   "Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1828 
1829     /*restore RTS Settings*/
1830     if(defaultStat & MS_RLSD_ON)
1831 	args[1] = SETDTR;
1832     else
1833 	args[1] = CLRDTR;
1834 
1835     CloseHandle(hcom);
1836 }
1837 
1838 /*
1839    Set Break after timeout
1840 */
1841 static DWORD CALLBACK set_CommBreak(LPVOID arg)
1842 {
1843     DWORD_PTR *args = arg;
1844     DWORD timeout = args[0];
1845     HANDLE hcom   = (HANDLE) args[1];
1846 
1847     trace("SetCommBreak for handle %p after timeout %d\n",
1848 	  hcom, timeout);
1849     Sleep(timeout);
1850     ok(SetCommBreak(hcom),"SetCommBreak %p failed\n", hcom);
1851     trace("SetCommBreak done\n");
1852     return 0;
1853 }
1854 
1855 /*
1856    Wait for the Break condition (TX resp. RX active)
1857    Needs Loopback TX-RX
1858 */
1859 static void test_WaitBreak(void)
1860 {
1861     OVERLAPPED overlapped;
1862     HANDLE hcom, hComPortEvent, alarmThread;
1863     DWORD_PTR args[2];
1864     DWORD alarmThreadId, before, after, after1, diff, success, err, written, evtmask=0;
1865 
1866     if (!loopback_txd_rxd) return;
1867 
1868     hcom = test_OpenComm(TRUE);
1869     if (hcom == INVALID_HANDLE_VALUE) return;
1870 
1871     ok(SetCommMask(hcom, EV_BREAK), "SetCommMask failed\n");
1872     hComPortEvent =  CreateEventW( NULL, TRUE, FALSE, NULL );
1873     ok(hComPortEvent != 0, "CreateEvent failed\n");
1874 
1875     trace("test_WaitBreak\n");
1876     args[0]= TIMEOUT >>1;
1877     args[1]= (DWORD_PTR)hcom;
1878     alarmThread = CreateThread(NULL, 0, set_CommBreak, args, 0, &alarmThreadId);
1879     /* Wait a minimum to let the thread start up */
1880     Sleep(10);
1881     trace("Thread created\n");
1882     ok(alarmThread !=0 , "CreateThread Failed\n");
1883 
1884     ZeroMemory( &overlapped, sizeof(overlapped));
1885     overlapped.hEvent = hComPortEvent;
1886     before = GetTickCount();
1887     success = WaitCommEvent(hcom, &evtmask, &overlapped);
1888     err = GetLastError();
1889     after = GetTickCount();
1890 
1891     trace("Success 0x%08x err %d evtmask 0x%08x\n", success, err, evtmask);
1892     ok(success || err == ERROR_IO_PENDING, "overlapped WaitCommEvent failed\n");
1893     trace("overlapped WaitCommEvent returned.\n");
1894 
1895     if (!success && (err == ERROR_IO_PENDING))
1896     {
1897         success = WaitForSingleObjectEx(hComPortEvent, TIMEOUT, TRUE);
1898         ok(!success, "wait hComPortEvent res %d\n", GetLastError());
1899     }
1900     success = GetOverlappedResult(hcom, &overlapped, &written, FALSE);
1901     err = GetLastError();
1902     after1 = GetTickCount();
1903     trace("Success 0x%08x err %d evtmask 0x%08x diff1 %d, diff2 %d\n",
1904 	  success, err, evtmask, after-before, after1-before);
1905 
1906     ok(evtmask & EV_BREAK, "Failed to detect  EV_BREAK: 0x%08x, expected 0x%08x\n",
1907        evtmask, EV_BREAK);
1908     ok(GetCommModemStatus(hcom, &evtmask), "GetCommModemStatus failed\n");
1909 
1910     diff = after1 - before;
1911     ok ((diff > (TIMEOUT>>1) -TIMEDELTA) && (diff < (TIMEOUT>>1) + TIMEDELTA),
1912 	"Unexpected time %d, expected around %d\n", diff, TIMEOUT>>1);
1913 
1914     ok(ClearCommBreak(hcom), "ClearCommBreak failed\n");
1915 
1916     CloseHandle(hcom);
1917 }
1918 
1919 static void test_stdio(void)
1920 {
1921     DCB dcb;
1922 
1923     /* cygwin tries this to determine the stdin handle type */
1924     ok( !GetCommState( GetStdHandle(STD_INPUT_HANDLE), &dcb ), "GetCommState succeeded on stdin\n" );
1925     ok( GetLastError() == ERROR_INVALID_HANDLE || GetLastError() == ERROR_INVALID_FUNCTION,
1926         "got error %u\n", GetLastError() );
1927 }
1928 
1929 static void test_WaitCommEvent(void)
1930 {
1931     HANDLE hcom;
1932     DWORD evtmask, ret, bytes, before, after, last_event_time;
1933     OVERLAPPED ovl_wait;
1934 
1935     hcom = test_OpenComm(TRUE);
1936     if (hcom == INVALID_HANDLE_VALUE) return;
1937 
1938     test_GetModemStatus(hcom);
1939 
1940     ret = SetCommMask(hcom, 0x1fff);
1941     ok(ret, "SetCommMask error %d\n", GetLastError());
1942 
1943     S(U(ovl_wait)).Offset = 0;
1944     S(U(ovl_wait)).OffsetHigh = 0;
1945     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
1946 
1947     trace("waiting 10 secs for com port events (turn on/off the device)...\n");
1948     last_event_time = 0;
1949     before = GetTickCount();
1950     do
1951     {
1952         evtmask = 0;
1953         SetLastError(0xdeadbeef);
1954         ret = WaitCommEvent(hcom, &evtmask, &ovl_wait);
1955         ok(!ret && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent returned %d, error %d\n", ret, GetLastError());
1956         if (GetLastError() != ERROR_IO_PENDING) goto done; /* no point in further testing */
1957         for (;;)
1958         {
1959             ret = WaitForSingleObject(ovl_wait.hEvent, 500);
1960             after = GetTickCount();
1961             if (ret == WAIT_OBJECT_0)
1962             {
1963                 last_event_time = after;
1964                 ret = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
1965                 ok(ret, "GetOverlappedResult reported error %d\n", GetLastError());
1966                 ok(bytes == sizeof(evtmask), "expected %u, written %u\n", (UINT)sizeof(evtmask), bytes);
1967                 trace("WaitCommEvent: got events %#x\n", evtmask);
1968                 test_GetModemStatus(hcom);
1969                 break;
1970             }
1971             else
1972             {
1973                 if (last_event_time || after - before >= 10000) goto done;
1974             }
1975         }
1976     } while (after - before < 10000);
1977 
1978 done:
1979     CloseHandle(ovl_wait.hEvent);
1980     CloseHandle(hcom);
1981 }
1982 
1983 static void test_FlushFileBuffers(void)
1984 {
1985     HANDLE hcom;
1986     DWORD  ret, bytes, errors;
1987     COMSTAT stat;
1988 
1989     hcom = test_OpenComm(FALSE);
1990     if (hcom == INVALID_HANDLE_VALUE) return;
1991 
1992     ret = WriteFile(hcom, "\0\0\0\0\0\0\0", 7, &bytes, NULL);
1993     ok(ret, "WriteFile error %d\n", GetLastError());
1994     ok(bytes == 7, "expected 7, got %u\n", bytes);
1995 
1996     ret = FlushFileBuffers(hcom);
1997     ok(ret, "FlushFileBuffers error %d\n", GetLastError());
1998 
1999     ret = ClearCommError(hcom, &errors, &stat);
2000     ok(ret, "ClearCommError error %d\n", GetLastError());
2001     ok(stat.cbInQue == 0, "expected 0, got %d bytes in InQueue\n", stat.cbInQue);
2002     ok(stat.cbOutQue == 0, "expected 0, got %d bytes in OutQueue\n", stat.cbOutQue);
2003     ok(errors == 0, "expected errors 0, got %#x\n", errors);
2004 
2005     CloseHandle(hcom);
2006 }
2007 
2008 static void test_read_write(void)
2009 {
2010     static const char atz[]="ATZ\r\n";
2011     char buf[256];
2012     HANDLE hcom;
2013     DCB dcb;
2014     COMMTIMEOUTS timeouts;
2015     DWORD ret, bytes, status, evtmask, before, after, last_event_time;
2016     OVERLAPPED ovl_wait;
2017     IO_STATUS_BLOCK iob;
2018     LARGE_INTEGER offset;
2019     LONG i;
2020 
2021     if (!pNtReadFile || !pNtWriteFile)
2022     {
2023         win_skip("not running on NT, skipping test\n");
2024         return;
2025     }
2026 
2027     hcom = test_OpenComm(TRUE);
2028     if (hcom == INVALID_HANDLE_VALUE) return;
2029 
2030     ret = GetCommState(hcom, &dcb);
2031     ok(ret, "GetCommState error %d\n", GetLastError());
2032     dcb.BaudRate = 9600;
2033     dcb.ByteSize = 8;
2034     dcb.Parity = NOPARITY;
2035     dcb.fRtsControl = RTS_CONTROL_ENABLE;
2036     dcb.fDtrControl = DTR_CONTROL_ENABLE;
2037     dcb.StopBits = ONESTOPBIT;
2038     ret = SetCommState(hcom, &dcb);
2039     ok(ret, "SetCommState error %d\n", GetLastError());
2040 
2041     memset(&timeouts, 0, sizeof(timeouts));
2042     timeouts.ReadTotalTimeoutConstant = TIMEOUT;
2043     ret = SetCommTimeouts(hcom, &timeouts);
2044     ok(ret,"SetCommTimeouts error %d\n", GetLastError());
2045 
2046     ret = SetupComm(hcom, 1024, 1024);
2047     ok(ret, "SetUpComm error %d\n", GetLastError());
2048 
2049     bytes = 0xdeadbeef;
2050     SetLastError(0xdeadbeef);
2051     ret = WriteFile(hcom, atz, 0, &bytes, NULL);
2052     ok(!ret, "WriteFile should fail\n");
2053     ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
2054     ok(bytes == 0, "bytes %u\n", bytes);
2055 
2056     U(iob).Status = -1;
2057     iob.Information = -1;
2058     status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, 0, NULL, NULL);
2059     ok(status == STATUS_INVALID_PARAMETER, "expected STATUS_INVALID_PARAMETER, got %#x\n", status);
2060     ok(U(iob).Status == -1, "expected -1, got %#x\n", U(iob).Status);
2061     ok(iob.Information == -1, "expected -1, got %ld\n", iob.Information);
2062 
2063     for (i = -20; i < 20; i++)
2064     {
2065         U(iob).Status = -1;
2066         iob.Information = -1;
2067         offset.QuadPart = (LONGLONG)i;
2068         status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, 0, &offset, NULL);
2069         if (i >= 0 || i == -1)
2070         {
2071             ok(status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, status);
2072             ok(U(iob).Status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, U(iob).Status);
2073             ok(iob.Information == 0, "%d: expected 0, got %lu\n", i, iob.Information);
2074         }
2075         else
2076         {
2077             ok(status == STATUS_INVALID_PARAMETER, "%d: expected STATUS_INVALID_PARAMETER, got %#x\n", i, status);
2078             ok(U(iob).Status == -1, "%d: expected -1, got %#x\n", i, U(iob).Status);
2079             ok(iob.Information == -1, "%d: expected -1, got %ld\n", i, iob.Information);
2080         }
2081     }
2082 
2083     U(iob).Status = -1;
2084     iob.Information = -1;
2085     offset.QuadPart = 0;
2086     status = pNtWriteFile(hcom, 0, NULL, NULL, &iob, atz, sizeof(atz), &offset, NULL);
2087     ok(status == STATUS_PENDING || status == STATUS_SUCCESS, "expected STATUS_PENDING or STATUS_SUCCESS, got %#x\n", status);
2088     /* Under Windows checking IO_STATUS_BLOCK right after the call leads
2089      * to races, iob.Status is either -1 or STATUS_SUCCESS, which means
2090      * that it's set only when the operation completes.
2091      */
2092     ret = WaitForSingleObject(hcom, TIMEOUT);
2093     if (ret == WAIT_TIMEOUT)
2094     {
2095         skip("Probably modem is not connected.\n");
2096         CloseHandle(hcom);
2097         return;
2098     }
2099     ok(ret == WAIT_OBJECT_0, "WaitForSingleObject error %d\n", ret);
2100     ok(U(iob).Status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", U(iob).Status);
2101     ok(iob.Information == sizeof(atz), "expected sizeof(atz), got %lu\n", iob.Information);
2102 
2103     ret = SetCommMask(hcom, EV_RXCHAR);
2104     ok(ret, "SetCommMask error %d\n", GetLastError());
2105 
2106     S(U(ovl_wait)).Offset = 0;
2107     S(U(ovl_wait)).OffsetHigh = 0;
2108     ovl_wait.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
2109 
2110     trace("waiting 3 secs for modem response...\n");
2111     last_event_time = 0;
2112     before = GetTickCount();
2113     do
2114     {
2115         evtmask = 0;
2116         SetLastError(0xdeadbeef);
2117         ret = WaitCommEvent(hcom, &evtmask, &ovl_wait);
2118         ok(!ret && GetLastError() == ERROR_IO_PENDING, "WaitCommEvent returned %d, error %d\n", ret, GetLastError());
2119         if (GetLastError() != ERROR_IO_PENDING) goto done; /* no point in further testing */
2120         for (;;)
2121         {
2122             ret = WaitForSingleObject(ovl_wait.hEvent, 100);
2123             after = GetTickCount();
2124             if (ret == WAIT_OBJECT_0)
2125             {
2126                 trace("got modem response.\n");
2127 
2128                 last_event_time = after;
2129                 ret = GetOverlappedResult(hcom, &ovl_wait, &bytes, FALSE);
2130                 ok(ret, "GetOverlappedResult reported error %d\n", GetLastError());
2131                 ok(bytes == sizeof(evtmask), "expected sizeof(evtmask), got %u\n", bytes);
2132                 ok(evtmask & EV_RXCHAR, "EV_RXCHAR should be set\n");
2133 
2134                 bytes = 0xdeadbeef;
2135                 SetLastError(0xdeadbeef);
2136                 ret = ReadFile(hcom, buf, 0, &bytes, NULL);
2137                 ok(!ret, "ReadFile should fail\n");
2138                 ok(GetLastError() == ERROR_INVALID_PARAMETER, "expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
2139                 ok(bytes == 0, "bytes %u\n", bytes);
2140 
2141                 U(iob).Status = -1;
2142                 iob.Information = -1;
2143                 status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 0, NULL, NULL);
2144                 ok(status == STATUS_INVALID_PARAMETER, "expected STATUS_INVALID_PARAMETER, got %#x\n", status);
2145                 ok(U(iob).Status == -1, "expected -1, got %#x\n", U(iob).Status);
2146                 ok(iob.Information == -1, "expected -1, got %ld\n", iob.Information);
2147 
2148                 for (i = -20; i < 20; i++)
2149                 {
2150                     U(iob).Status = -1;
2151                     iob.Information = -1;
2152                     offset.QuadPart = (LONGLONG)i;
2153                     status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 0, &offset, NULL);
2154                     if (i >= 0)
2155                     {
2156                         ok(status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, status);
2157                         ok(U(iob).Status == STATUS_SUCCESS, "%d: expected STATUS_SUCCESS, got %#x\n", i, U(iob).Status);
2158                         ok(iob.Information == 0, "%d: expected 0, got %lu\n", i, iob.Information);
2159                     }
2160                     else
2161                     {
2162                         ok(status == STATUS_INVALID_PARAMETER, "%d: expected STATUS_INVALID_PARAMETER, got %#x\n", i, status);
2163                         ok(U(iob).Status == -1, "%d: expected -1, got %#x\n", i, U(iob).Status);
2164                         ok(iob.Information == -1, "%d: expected -1, got %ld\n", i, iob.Information);
2165                     }
2166                 }
2167 
2168                 U(iob).Status = -1;
2169                 iob.Information = -1;
2170                 offset.QuadPart = 0;
2171                 status = pNtReadFile(hcom, 0, NULL, NULL, &iob, buf, 1, &offset, NULL);
2172                 ok(status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", status);
2173                 ok(U(iob).Status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x\n", U(iob).Status);
2174                 ok(iob.Information == 1, "expected 1, got %lu\n", iob.Information);
2175                 goto done;
2176             }
2177             else
2178             {
2179                 if (last_event_time || after - before >= 3000) goto done;
2180             }
2181         }
2182     } while (after - before < 3000);
2183 
2184 done:
2185     CloseHandle(ovl_wait.hEvent);
2186     CloseHandle(hcom);
2187 }
2188 
2189 START_TEST(comm)
2190 {
2191     HMODULE ntdll = GetModuleHandleA("ntdll.dll");
2192     if (ntdll)
2193     {
2194         pNtReadFile = (void *)GetProcAddress(ntdll, "NtReadFile");
2195         pNtWriteFile = (void *)GetProcAddress(ntdll, "NtWriteFile");
2196     }
2197 
2198     test_ClearCommError(); /* keep it the very first test */
2199     test_FlushFileBuffers();
2200     test_BuildCommDCB();
2201     test_ReadTimeOut();
2202     test_waittxempty();
2203     test_non_pending_errors();
2204     test_LoopbackRead();
2205     test_LoopbackCtsRts();
2206     test_LoopbackDtrDsr();
2207     test_LoopbackDtrRing();
2208     test_LoopbackDtrDcd();
2209     test_WaitRx();
2210     test_WaitCts();
2211     test_AbortWaitCts();
2212     test_WaitDsr();
2213     test_WaitRing();
2214     test_WaitDcd();
2215     test_WaitBreak();
2216     test_stdio();
2217     test_read_write();
2218 
2219     if (!winetest_interactive)
2220     {
2221         skip("interactive tests (set WINETEST_INTERACTIVE=1)\n");
2222         return;
2223     }
2224 
2225     test_WaitCommEvent();
2226 }
2227