1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
|
/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2021 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <ntapi/nt_file.h>
#include <ntapi/nt_string.h>
#include <ntapi/nt_atomic.h>
#include <ntapi/nt_port.h>
#include <ntapi/nt_ipc.h>
#include <ntapi/nt_sem.h>
#include <ntapi/ntapi.h>
#include "ntapi_impl.h"
static const nt_guid g_sempid = NT_IPC_GUID_SEMPID;
static const wchar16_t p_sempid[6] = NT_IPC_OBJDIR_PREFIX_SEMPID;
static int32_t __semctl_get_service_attr(
nt_rtdata * rtdata,
nt_tty_service_info * semctl)
{
nt_iosb iosb;
/* inherited runtime data? */
if (rtdata->semctl_keys[0]) {
semctl->attr.ver_major = 0;
semctl->attr.ver_minor = 0;
semctl->attr.options = 0;
semctl->attr.flags = 0;
semctl->attr.type = rtdata->semctl_type;
semctl->attr.subtype = rtdata->semctl_subtype;
semctl->attr.keys.key[0] = rtdata->semctl_keys[0];
semctl->attr.keys.key[1] = rtdata->semctl_keys[1];
semctl->attr.keys.key[2] = rtdata->semctl_keys[2];
semctl->attr.keys.key[3] = rtdata->semctl_keys[3];
semctl->attr.keys.key[4] = rtdata->semctl_keys[4];
semctl->attr.keys.key[5] = rtdata->semctl_keys[5];
__ntapi->tt_guid_copy(
&semctl->attr.guid,
&rtdata->semctl_guid);
return NT_STATUS_SUCCESS;
}
/* obtain service info */
return __ntapi->tty_query_information_service(
0,&iosb,
semctl,&(nt_guid)NT_PORT_GUID_SEMCTL,
0,0);
}
static int32_t __semctl_server_connect(
nt_rtdata * rtdata,
nt_tty_service_info * semctl)
{
int32_t status;
/* already cononected? */
if (rtdata->hsemctl)
return NT_STATUS_SUCCESS;
/* connect */
if ((status = __ntapi->ipc_connect_by_attr(
&rtdata->hsemctl,
&semctl->attr)))
return status;
/* update */
rtdata->semctl_type = semctl->attr.type;
rtdata->semctl_subtype = semctl->attr.subtype;
rtdata->semctl_keys[0] = semctl->attr.keys.key[0];
rtdata->semctl_keys[1] = semctl->attr.keys.key[1];
rtdata->semctl_keys[2] = semctl->attr.keys.key[2];
rtdata->semctl_keys[3] = semctl->attr.keys.key[3];
rtdata->semctl_keys[4] = semctl->attr.keys.key[4];
rtdata->semctl_keys[5] = semctl->attr.keys.key[5];
__ntapi->tt_guid_copy(
&rtdata->semctl_guid,
&semctl->attr.guid);
return NT_STATUS_SUCCESS;
}
static int32_t __sempid_symlink_set(
nt_rtdata * rtdata,
nt_tty_service_info * semctl)
{
int32_t status;
void * hpiddir;
nt_port_name svcname;
nt_unicode_string str;
if (rtdata->hsempid)
return NT_STATUS_SUCCESS;
if (!rtdata->hsempiddir) {
if ((status = __ntapi->tt_open_ipc_object_directory(
&hpiddir,
NT_SEC_READ_CONTROL
| NT_DIRECTORY_QUERY
| NT_DIRECTORY_TRAVERSE
| NT_DIRECTORY_CREATE_OBJECT
| NT_DIRECTORY_CREATE_SUBDIRECTORY,
p_sempid,&g_sempid)))
return status;
if (at_locked_cas((intptr_t *)&rtdata->hsempiddir,0,(intptr_t)hpiddir))
__ntapi->zw_close(hpiddir);
}
__ntapi->tt_port_name_from_attr(
&svcname,&semctl->attr);
str.strlen = (uint16_t)(__offsetof(nt_port_name,null_termination));
str.maxlen = sizeof(nt_port_name);
str.buffer = svcname.base_named_objects;
return __ntapi->tt_create_ipc_object_directory_entry(
&rtdata->hsempid,
NT_SEC_STANDARD_RIGHTS_ALL,
rtdata->hsempiddir,
0,&str,
pe_get_current_process_id());
}
static int32_t __stdcall __sem_open(
void * hipc,
nt_sem_info * sem,
uint32_t access,
nt_object_attributes * oa,
nt_iosb * iosb,
uint32_t share,
uint32_t semslots,
uint32_t key,
uint32_t id,
uint32_t opcode)
{
int32_t status;
nt_tty_port_msg msg;
nt_iosb siosb;
nt_tty_service_info semctl;
nt_runtime_data * rtdata;
/* init */
rtdata = (__ntapi_internals())->rtdata;
/* semctl service attributes */
if (!rtdata->hsempid)
if ((status = __semctl_get_service_attr(rtdata,&semctl)))
return status;
/* semctl server */
if ((status = __semctl_server_connect(rtdata,&semctl)))
return status;
/* sempid symlink */
if ((status = __sempid_symlink_set(rtdata,&semctl)))
return status;
/* hipc */
if (!hipc && (opcode == NT_TTY_SEM_ALLOC))
hipc = (__ntapi_internals())->rtdata->hsemctl;
/* obtain sem info */
__ntapi->tt_aligned_block_memset(
&msg,0,sizeof(msg));
if (!iosb)
iosb = &siosb;
msg.header.msg_type = NT_LPC_NEW_MESSAGE;
msg.header.data_size = sizeof(nt_sem_info_msg) - sizeof(msg.header);
msg.header.msg_size = sizeof(msg);
msg.ttyinfo.opcode = opcode;
msg.seminfo.semkey = (int32_t)key;
msg.seminfo.semid = (int32_t)id;
msg.seminfo.semslots = semslots;
msg.seminfo.ntattr = oa->obj_attr;
msg.seminfo.ntaccess = access;
msg.seminfo.ntshare = share;
if ((status = __ntapi->zw_request_wait_reply_port(hipc,&msg,&msg)))
return status;
else if (msg.ttyinfo.status)
return msg.ttyinfo.status;
iosb->info = sizeof(msg.svcinfo);
iosb->status = NT_STATUS_SUCCESS;
/* new semaphore? */
if (opcode == NT_TTY_SEM_ALLOC)
if ((status = __ntapi->ipc_connect_by_attr(
&hipc,&msg.svcinfo.attr)))
return status;
/* all done */
__ntapi->tt_aligned_block_memset(
(uintptr_t *)sem,
0,sizeof(*sem));
sem->semkey = msg.svcinfo.key;
sem->semid = msg.svcinfo.id;
sem->hport = hipc;
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_sem_create(
__in void * hport,
__out nt_sem_info * sem,
__in uint32_t access,
__in nt_object_attributes * oa,
__out nt_iosb * iosb,
__in uint32_t share,
__in uint32_t nslots)
{
uint32_t key;
/* validate */
if (!oa->root_dir)
return NT_STATUS_DIRECTORY_SERVICE_REQUIRED;
if (oa->obj_name && !oa->obj_name->strlen) {
key = 0;
} else if (oa->obj_name) {
if (oa->obj_name->strlen != 8 * sizeof(wchar16_t))
return NT_STATUS_OBJECT_NAME_INVALID;
if (__ntapi->tt_hex_utf16_to_uint32(oa->obj_name->buffer,&key))
return NT_STATUS_OBJECT_NAME_INVALID;
} else {
key = 0;
}
/* open semaphore */
return __sem_open(
hport,sem,access,
oa,iosb,share,nslots,
key,0,NT_TTY_SEM_ALLOC);
}
int32_t __stdcall __ntapi_sem_open(
__in void * hport,
__out nt_sem_info * sem,
__in uint32_t access,
__in nt_object_attributes * oa,
__out nt_iosb * iosb,
__in uint32_t share,
__in uint32_t nslots)
{
int32_t status;
uint32_t key;
uint32_t id;
void * hsymlink;
nt_oa ipcoa;
void * hipc;
nt_rtdata * rtdata;
nt_tty_service_info semctl;
/* init */
rtdata = (__ntapi_internals())->rtdata;
/* validate */
if (!oa->root_dir)
return NT_STATUS_DIRECTORY_SERVICE_REQUIRED;
if (!oa->obj_name)
return NT_STATUS_INVALID_PARAMETER;
if (oa->obj_name->strlen != 8 * sizeof(wchar16_t))
return NT_STATUS_OBJECT_NAME_INVALID;
if (__ntapi->tt_hex_utf16_to_uint32(oa->obj_name->buffer,&key))
return NT_STATUS_OBJECT_NAME_INVALID;
/* open symlink */
ipcoa.len = sizeof(ipcoa);
ipcoa.root_dir = oa->root_dir;
ipcoa.obj_name = oa->obj_name;
ipcoa.obj_attr = 0;
ipcoa.sec_desc = oa->sec_desc;
ipcoa.sec_qos = oa->sec_qos;
status = __ntapi->zw_open_symbolic_link_object(
&hsymlink,
NT_SYMBOLIC_LINK_QUERY,
&ipcoa);
switch (status) {
case NT_STATUS_SUCCESS:
break;
case NT_STATUS_OBJECT_NAME_NOT_FOUND:
case NT_STATUS_OBJECT_PATH_NOT_FOUND:
if (oa->obj_attr & NT_OBJ_OPENIF)
return __sem_open(
hport,sem,access,
oa,iosb,share,nslots,
key,0,NT_TTY_SEM_ALLOC);
else
return status;
default:
return status;
}
/* semctl service attributes */
if (!rtdata->hsempid)
if ((status = __semctl_get_service_attr(rtdata,&semctl)))
return status;
/* semctl server */
if ((status = __semctl_server_connect(rtdata,&semctl)))
return status;
/* sempid symlink */
if ((status = __sempid_symlink_set(rtdata,&semctl)))
return status;
/* ipc connect */
status = __ntapi->ipc_connect_by_symlink(
&hipc,hsymlink);
__ntapi->zw_close(
hsymlink);
if (status)
return status;
/* open by id? */
if (oa->obj_attr & NT_OBJ_OPENLINK) {
id = key;
key = 0;
} else {
id = 0;
}
return __sem_open(
hipc,sem,access,
oa,iosb,share,nslots,
key,id,NT_TTY_SEM_OPEN);
}
|
