Bug Summary

File:obj-scan-build/term/device_replyServer.c
Location:line 127, column 24
Description:Value stored to 'return_codeCheck' during its initialization is never read

Annotated Source Code

1/* Module device_reply */
2
3#ifndef _GNU_SOURCE1
4#define _GNU_SOURCE1 1
5#endif
6
7#define EXPORT_BOOLEAN
8#include <mach/boolean.h>
9#include <mach/kern_return.h>
10#include <mach/message.h>
11#include <mach/mig_errors.h>
12#include <mach/mig_support.h>
13
14#ifndef mig_internalstatic
15#define mig_internalstatic static
16#endif
17
18#ifndef mig_external
19#define mig_external
20#endif
21
22#ifndef TypeCheck0
23#define TypeCheck0 1
24#endif
25
26#ifndef UseExternRCSId1
27#define UseExternRCSId1 1
28#endif
29
30#define BAD_TYPECHECK(type, check)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(type); _c.t = *(check); _t.w != _c.w; }) ({\
31 union { mach_msg_type_t t; unsigned32_t w; } _t, _c;\
32 _t.t = *(type); _c.t = *(check); _t.w != _c.w; })
33#define msgh_request_portmsgh_local_port msgh_local_port
34#define MACH_MSGH_BITS_REQUEST(bits)(((bits) & 0x0000ff00) >> 8) MACH_MSGH_BITS_LOCAL(bits)(((bits) & 0x0000ff00) >> 8)
35#define msgh_reply_portmsgh_remote_port msgh_remote_port
36#define MACH_MSGH_BITS_REPLY(bits)((bits) & 0x000000ff) MACH_MSGH_BITS_REMOTE(bits)((bits) & 0x000000ff)
37
38#include <mach/std_types.h>
39#include <device/device_types.h>
40#include <device/net_status.h>
41
42/* SimpleRoutine device_open_reply */
43mig_internalstatic void _Xdevice_open_reply
44 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
45{
46 typedef struct {
47 mach_msg_header_t Head;
48 mach_msg_type_t return_codeType;
49 kern_return_t return_code;
50 mach_msg_type_t device_portType;
51 mach_port_t device_port;
52 } Request;
53
54 typedef struct {
55 mach_msg_header_t Head;
56 mach_msg_type_t RetCodeType;
57 kern_return_t RetCode;
58 } Reply;
59
60 Request *In0P = (Request *) InHeadP;
61 Reply *OutP = (Reply *) OutHeadP;
62 mig_external kern_return_t device_open_reply
63 (mach_port_t reply_port, kern_return_t return_code, mach_port_t device_port);
64
65 const mach_msg_type_t return_codeCheck = {
66 /* msgt_name = */ 2,
67 /* msgt_size = */ 32,
68 /* msgt_number = */ 1,
69 /* msgt_inline = */ TRUE((boolean_t) 1),
70 /* msgt_longform = */ FALSE((boolean_t) 0),
71 /* msgt_deallocate = */ FALSE((boolean_t) 0),
72 /* msgt_unused = */ 0
73 };
74
75 const mach_msg_type_t device_portCheck = {
76 /* msgt_name = */ 17,
77 /* msgt_size = */ 32,
78 /* msgt_number = */ 1,
79 /* msgt_inline = */ TRUE((boolean_t) 1),
80 /* msgt_longform = */ FALSE((boolean_t) 0),
81 /* msgt_deallocate = */ FALSE((boolean_t) 0),
82 /* msgt_unused = */ 0
83 };
84
85#if TypeCheck0
86 if ((In0P->Head.msgh_size != 40) ||
87 !(In0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX0x80000000U))
88 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
89#endif /* TypeCheck */
90
91#if TypeCheck0
92 if (BAD_TYPECHECK(&In0P->return_codeType, &return_codeCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->return_codeType); _c.t = *(&return_codeCheck
); _t.w != _c.w; }))
93 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
94#endif /* TypeCheck */
95
96#if TypeCheck0
97 if (BAD_TYPECHECK(&In0P->device_portType, &device_portCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->device_portType); _c.t = *(&device_portCheck
); _t.w != _c.w; }))
98 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
99#endif /* TypeCheck */
100
101 OutP->RetCode = device_open_reply(In0P->Head.msgh_request_portmsgh_local_port, In0P->return_code, In0P->device_port);
102}
103
104/* SimpleRoutine device_write_reply */
105mig_internalstatic void _Xdevice_write_reply
106 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
107{
108 typedef struct {
109 mach_msg_header_t Head;
110 mach_msg_type_t return_codeType;
111 kern_return_t return_code;
112 mach_msg_type_t bytes_writtenType;
113 int bytes_written;
114 } Request;
115
116 typedef struct {
117 mach_msg_header_t Head;
118 mach_msg_type_t RetCodeType;
119 kern_return_t RetCode;
120 } Reply;
121
122 Request *In0P = (Request *) InHeadP;
123 Reply *OutP = (Reply *) OutHeadP;
124 mig_external kern_return_t device_write_reply
125 (mach_port_t reply_port, kern_return_t return_code, int bytes_written);
126
127 const mach_msg_type_t return_codeCheck = {
Value stored to 'return_codeCheck' during its initialization is never read
128 /* msgt_name = */ 2,
129 /* msgt_size = */ 32,
130 /* msgt_number = */ 1,
131 /* msgt_inline = */ TRUE((boolean_t) 1),
132 /* msgt_longform = */ FALSE((boolean_t) 0),
133 /* msgt_deallocate = */ FALSE((boolean_t) 0),
134 /* msgt_unused = */ 0
135 };
136
137 const mach_msg_type_t bytes_writtenCheck = {
138 /* msgt_name = */ 2,
139 /* msgt_size = */ 32,
140 /* msgt_number = */ 1,
141 /* msgt_inline = */ TRUE((boolean_t) 1),
142 /* msgt_longform = */ FALSE((boolean_t) 0),
143 /* msgt_deallocate = */ FALSE((boolean_t) 0),
144 /* msgt_unused = */ 0
145 };
146
147#if TypeCheck0
148 if ((In0P->Head.msgh_size != 40) ||
149 (In0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX0x80000000U))
150 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
151#endif /* TypeCheck */
152
153#if TypeCheck0
154 if (BAD_TYPECHECK(&In0P->return_codeType, &return_codeCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->return_codeType); _c.t = *(&return_codeCheck
); _t.w != _c.w; }))
155 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
156#endif /* TypeCheck */
157
158#if TypeCheck0
159 if (BAD_TYPECHECK(&In0P->bytes_writtenType, &bytes_writtenCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->bytes_writtenType); _c.t = *(&bytes_writtenCheck
); _t.w != _c.w; }))
160 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
161#endif /* TypeCheck */
162
163 OutP->RetCode = device_write_reply(In0P->Head.msgh_request_portmsgh_local_port, In0P->return_code, In0P->bytes_written);
164}
165
166/* SimpleRoutine device_write_reply_inband */
167mig_internalstatic void _Xdevice_write_reply_inband
168 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
169{
170 typedef struct {
171 mach_msg_header_t Head;
172 mach_msg_type_t return_codeType;
173 kern_return_t return_code;
174 mach_msg_type_t bytes_writtenType;
175 int bytes_written;
176 } Request;
177
178 typedef struct {
179 mach_msg_header_t Head;
180 mach_msg_type_t RetCodeType;
181 kern_return_t RetCode;
182 } Reply;
183
184 Request *In0P = (Request *) InHeadP;
185 Reply *OutP = (Reply *) OutHeadP;
186 mig_external kern_return_t device_write_reply_inband
187 (mach_port_t reply_port, kern_return_t return_code, int bytes_written);
188
189 const mach_msg_type_t return_codeCheck = {
190 /* msgt_name = */ 2,
191 /* msgt_size = */ 32,
192 /* msgt_number = */ 1,
193 /* msgt_inline = */ TRUE((boolean_t) 1),
194 /* msgt_longform = */ FALSE((boolean_t) 0),
195 /* msgt_deallocate = */ FALSE((boolean_t) 0),
196 /* msgt_unused = */ 0
197 };
198
199 const mach_msg_type_t bytes_writtenCheck = {
200 /* msgt_name = */ 2,
201 /* msgt_size = */ 32,
202 /* msgt_number = */ 1,
203 /* msgt_inline = */ TRUE((boolean_t) 1),
204 /* msgt_longform = */ FALSE((boolean_t) 0),
205 /* msgt_deallocate = */ FALSE((boolean_t) 0),
206 /* msgt_unused = */ 0
207 };
208
209#if TypeCheck0
210 if ((In0P->Head.msgh_size != 40) ||
211 (In0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX0x80000000U))
212 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
213#endif /* TypeCheck */
214
215#if TypeCheck0
216 if (BAD_TYPECHECK(&In0P->return_codeType, &return_codeCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->return_codeType); _c.t = *(&return_codeCheck
); _t.w != _c.w; }))
217 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
218#endif /* TypeCheck */
219
220#if TypeCheck0
221 if (BAD_TYPECHECK(&In0P->bytes_writtenType, &bytes_writtenCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->bytes_writtenType); _c.t = *(&bytes_writtenCheck
); _t.w != _c.w; }))
222 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
223#endif /* TypeCheck */
224
225 OutP->RetCode = device_write_reply_inband(In0P->Head.msgh_request_portmsgh_local_port, In0P->return_code, In0P->bytes_written);
226}
227
228/* SimpleRoutine device_read_reply */
229mig_internalstatic void _Xdevice_read_reply
230 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
231{
232 typedef struct {
233 mach_msg_header_t Head;
234 mach_msg_type_t return_codeType;
235 kern_return_t return_code;
236 mach_msg_type_long_t dataType;
237 io_buf_ptr_t data;
238 } Request;
239
240 typedef struct {
241 mach_msg_header_t Head;
242 mach_msg_type_t RetCodeType;
243 kern_return_t RetCode;
244 } Reply;
245
246 Request *In0P = (Request *) InHeadP;
247 Reply *OutP = (Reply *) OutHeadP;
248 mig_external kern_return_t device_read_reply
249 (mach_port_t reply_port, kern_return_t return_code, io_buf_ptr_t data, mach_msg_type_number_t dataCnt);
250
251 const mach_msg_type_t return_codeCheck = {
252 /* msgt_name = */ 2,
253 /* msgt_size = */ 32,
254 /* msgt_number = */ 1,
255 /* msgt_inline = */ TRUE((boolean_t) 1),
256 /* msgt_longform = */ FALSE((boolean_t) 0),
257 /* msgt_deallocate = */ FALSE((boolean_t) 0),
258 /* msgt_unused = */ 0
259 };
260
261#if TypeCheck0
262 if ((In0P->Head.msgh_size != 48) ||
263 !(In0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX0x80000000U))
264 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
265#endif /* TypeCheck */
266
267#if TypeCheck0
268 if (BAD_TYPECHECK(&In0P->return_codeType, &return_codeCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->return_codeType); _c.t = *(&return_codeCheck
); _t.w != _c.w; }))
269 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
270#endif /* TypeCheck */
271
272#if TypeCheck0
273 if ((In0P->dataType.msgtl_header.msgt_inline != FALSE((boolean_t) 0)) ||
274 (In0P->dataType.msgtl_header.msgt_longform != TRUE((boolean_t) 1)) ||
275 (In0P->dataType.msgtl_name != 9) ||
276 (In0P->dataType.msgtl_size != 8))
277 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
278#endif /* TypeCheck */
279
280 OutP->RetCode = device_read_reply(In0P->Head.msgh_request_portmsgh_local_port, In0P->return_code, In0P->data, In0P->dataType.msgtl_number);
281}
282
283/* SimpleRoutine device_read_reply_inband */
284mig_internalstatic void _Xdevice_read_reply_inband
285 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
286{
287 typedef struct {
288 mach_msg_header_t Head;
289 mach_msg_type_t return_codeType;
290 kern_return_t return_code;
291 mach_msg_type_t dataType;
292 char data[128];
293 } Request;
294
295 typedef struct {
296 mach_msg_header_t Head;
297 mach_msg_type_t RetCodeType;
298 kern_return_t RetCode;
299 } Reply;
300
301 Request *In0P = (Request *) InHeadP;
302 Reply *OutP = (Reply *) OutHeadP;
303 mig_external kern_return_t device_read_reply_inband
304 (mach_port_t reply_port, kern_return_t return_code, io_buf_ptr_inband_t data, mach_msg_type_number_t dataCnt);
305
306 unsigned int msgh_size;
307
308 const mach_msg_type_t return_codeCheck = {
309 /* msgt_name = */ 2,
310 /* msgt_size = */ 32,
311 /* msgt_number = */ 1,
312 /* msgt_inline = */ TRUE((boolean_t) 1),
313 /* msgt_longform = */ FALSE((boolean_t) 0),
314 /* msgt_deallocate = */ FALSE((boolean_t) 0),
315 /* msgt_unused = */ 0
316 };
317
318#if TypeCheck0
319 msgh_size = In0P->Head.msgh_size;
320 if ((msgh_size < 36) ||
321 (In0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX0x80000000U))
322 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
323#endif /* TypeCheck */
324
325#if TypeCheck0
326 if (BAD_TYPECHECK(&In0P->return_codeType, &return_codeCheck)({ union { mach_msg_type_t t; unsigned32_t w; } _t, _c; _t.t =
*(&In0P->return_codeType); _c.t = *(&return_codeCheck
); _t.w != _c.w; }))
327 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
328#endif /* TypeCheck */
329
330#if TypeCheck0
331 if ((In0P->dataType.msgt_inline != TRUE((boolean_t) 1)) ||
332 (In0P->dataType.msgt_longform != FALSE((boolean_t) 0)) ||
333 (In0P->dataType.msgt_name != 8) ||
334 (In0P->dataType.msgt_size != 8))
335 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
336#endif /* TypeCheck */
337
338#if TypeCheck0
339 if (msgh_size != 36 + ((In0P->dataType.msgt_number + 3) & ~3))
340 { OutP->RetCode = MIG_BAD_ARGUMENTS-304; return; }
341#endif /* TypeCheck */
342
343 OutP->RetCode = device_read_reply_inband(In0P->Head.msgh_request_portmsgh_local_port, In0P->return_code, In0P->data, In0P->dataType.msgt_number);
344}
345
346static mig_routine_t device_reply_server_routines[] = {
347 _Xdevice_open_reply,
348 0,
349 _Xdevice_write_reply,
350 _Xdevice_write_reply_inband,
351 _Xdevice_read_reply,
352 _Xdevice_read_reply_inband,
353};
354
355mig_external boolean_t device_reply_server
356 (mach_msg_header_t *InHeadP, mach_msg_header_t *OutHeadP)
357{
358 mach_msg_header_t *InP = InHeadP;
359 mig_reply_header_t *OutP = (mig_reply_header_t *) OutHeadP;
360
361 const mach_msg_type_t RetCodeType = {
362 /* msgt_name = */ MACH_MSG_TYPE_INTEGER_322,
363 /* msgt_size = */ 32,
364 /* msgt_number = */ 1,
365 /* msgt_inline = */ TRUE((boolean_t) 1),
366 /* msgt_longform = */ FALSE((boolean_t) 0),
367 /* msgt_deallocate = */ FALSE((boolean_t) 0),
368 /* msgt_unused = */ 0
369 };
370
371 mig_routine_t routine;
372
373 OutP->Head.msgh_bits = MACH_MSGH_BITS(MACH_MSGH_BITS_REPLY(InP->msgh_bits), 0)((((InP->msgh_bits) & 0x000000ff)) | ((0) << 8));
374 OutP->Head.msgh_size = sizeof *OutP;
375 OutP->Head.msgh_remote_port = InP->msgh_reply_portmsgh_remote_port;
376 OutP->Head.msgh_local_port = MACH_PORT_NULL((mach_port_t) 0);
377 OutP->Head.msgh_seqno = 0;
378 OutP->Head.msgh_id = InP->msgh_id + 100;
379
380 OutP->RetCodeType = RetCodeType;
381
382 if ((InP->msgh_id > 2905) || (InP->msgh_id < 2900) ||
383 ((routine = device_reply_server_routines[InP->msgh_id - 2900]) == 0)) {
384 OutP->RetCode = MIG_BAD_ID-303;
385 return FALSE((boolean_t) 0);
386 }
387 (*routine) (InP, &OutP->Head);
388 return TRUE((boolean_t) 1);
389}
390
391mig_external mig_routine_t device_reply_server_routine
392 (const mach_msg_header_t *InHeadP)
393{
394 int msgh_id;
395
396 msgh_id = InHeadP->msgh_id - 2900;
397
398 if ((msgh_id > 5) || (msgh_id < 0))
399 return 0;
400
401 return device_reply_server_routines[msgh_id];
402}
403