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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Ondrej Palkovsky |
2 | * Copyright (C) 2006 Ondrej Palkovsky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <arch.h> |
29 | #include <arch.h> |
30 | #include <proc/task.h> |
30 | #include <proc/task.h> |
31 | 31 | ||
32 | #include <errno.h> |
32 | #include <errno.h> |
33 | #include <mm/page.h> |
33 | #include <mm/page.h> |
34 | #include <memstr.h> |
34 | #include <memstr.h> |
35 | #include <debug.h> |
35 | #include <debug.h> |
36 | #include <ipc/ipc.h> |
36 | #include <ipc/ipc.h> |
37 | #include <ipc/sysipc.h> |
37 | #include <ipc/sysipc.h> |
38 | #include <ipc/ipcrsc.h> |
38 | #include <ipc/ipcrsc.h> |
39 | 39 | ||
40 | 40 | ||
41 | #include <print.h> |
41 | #include <print.h> |
42 | #include <arch.h> |
42 | #include <arch.h> |
43 | #include <proc/thread.h> |
43 | #include <proc/thread.h> |
44 | 44 | ||
45 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
45 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
46 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
46 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
47 | phone = &TASK->phones[phoneid]; \ |
47 | phone = &TASK->phones[phoneid]; \ |
48 | } |
48 | } |
49 | 49 | ||
50 | #define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*src)) |
50 | #define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src))) |
51 | 51 | ||
52 | /** Return true if the method is a system method */ |
52 | /** Return true if the method is a system method */ |
53 | static inline int is_system_method(__native method) |
53 | static inline int is_system_method(__native method) |
54 | { |
54 | { |
55 | if (method <= IPC_M_LAST_SYSTEM) |
55 | if (method <= IPC_M_LAST_SYSTEM) |
56 | return 1; |
56 | return 1; |
57 | return 0; |
57 | return 0; |
58 | } |
58 | } |
59 | 59 | ||
60 | /** Return true if the message with this method is forwardable |
60 | /** Return true if the message with this method is forwardable |
61 | * |
61 | * |
62 | * - some system messages may be forwarded, for some of them |
62 | * - some system messages may be forwarded, for some of them |
63 | * it is useless |
63 | * it is useless |
64 | */ |
64 | */ |
65 | static inline int is_forwardable(__native method) |
65 | static inline int is_forwardable(__native method) |
66 | { |
66 | { |
67 | if (method == IPC_M_PHONE_HUNGUP) |
67 | if (method == IPC_M_PHONE_HUNGUP) |
68 | return 0; /* This message is meant only for the receiver */ |
68 | return 0; /* This message is meant only for the receiver */ |
69 | return 1; |
69 | return 1; |
70 | } |
70 | } |
71 | 71 | ||
72 | /****************************************************/ |
72 | /****************************************************/ |
73 | /* Functions that preprocess answer before sending |
73 | /* Functions that preprocess answer before sending |
74 | * it to the recepient |
74 | * it to the recepient |
75 | */ |
75 | */ |
76 | 76 | ||
77 | /** Return true if the caller (ipc_answer) should save |
77 | /** Return true if the caller (ipc_answer) should save |
78 | * the old call contents for answer_preprocess |
78 | * the old call contents for answer_preprocess |
79 | */ |
79 | */ |
80 | static inline int answer_need_old(call_t *call) |
80 | static inline int answer_need_old(call_t *call) |
81 | { |
81 | { |
82 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
82 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
83 | return 1; |
83 | return 1; |
84 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
84 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
85 | return 1; |
85 | return 1; |
86 | return 0; |
86 | return 0; |
87 | } |
87 | } |
88 | 88 | ||
89 | /** Interpret process answer as control information */ |
89 | /** Interpret process answer as control information */ |
90 | static inline void answer_preprocess(call_t *answer, ipc_data_t *olddata) |
90 | static inline void answer_preprocess(call_t *answer, ipc_data_t *olddata) |
91 | { |
91 | { |
92 | int phoneid; |
92 | int phoneid; |
93 | 93 | ||
94 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
94 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
95 | /* Atomic operation */ |
95 | /* Atomic operation */ |
96 | answer->data.phone->callee = NULL; |
96 | answer->data.phone->callee = NULL; |
97 | } |
97 | } |
98 | 98 | ||
99 | if (!olddata) |
99 | if (!olddata) |
100 | return; |
100 | return; |
101 | 101 | ||
102 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
102 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
103 | phoneid = IPC_GET_ARG3(*olddata); |
103 | phoneid = IPC_GET_ARG3(*olddata); |
104 | if (IPC_GET_RETVAL(answer->data)) { |
104 | if (IPC_GET_RETVAL(answer->data)) { |
105 | /* The connection was not accepted */ |
105 | /* The connection was not accepted */ |
106 | phone_dealloc(phoneid); |
106 | phone_dealloc(phoneid); |
107 | } else { |
107 | } else { |
108 | /* The connection was accepted */ |
108 | /* The connection was accepted */ |
109 | phone_connect(phoneid,&answer->sender->answerbox); |
109 | phone_connect(phoneid,&answer->sender->answerbox); |
- | 110 | /* Set 'phone identification' as arg3 of response */ |
|
- | 111 | IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]); |
|
110 | } |
112 | } |
111 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
113 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
112 | /* If the users accepted call, connect */ |
114 | /* If the users accepted call, connect */ |
113 | if (!IPC_GET_RETVAL(answer->data)) { |
115 | if (!IPC_GET_RETVAL(answer->data)) { |
114 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
116 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
115 | &TASK->answerbox); |
117 | &TASK->answerbox); |
116 | } |
118 | } |
117 | } |
119 | } |
118 | } |
120 | } |
119 | 121 | ||
- | 122 | /** Called before the request is sent |
|
- | 123 | * |
|
- | 124 | * @return 0 - no error, -1 - report error to user |
|
- | 125 | */ |
|
- | 126 | static int request_preprocess(call_t *call) |
|
- | 127 | { |
|
- | 128 | int newphid; |
|
- | 129 | ||
- | 130 | switch (IPC_GET_METHOD(call->data)) { |
|
- | 131 | case IPC_M_CONNECT_ME_TO: |
|
- | 132 | newphid = phone_alloc(); |
|
- | 133 | if (newphid < 0) |
|
- | 134 | return ELIMIT; |
|
- | 135 | /* Set arg3 for server */ |
|
- | 136 | IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]); |
|
- | 137 | call->flags |= IPC_CALL_CONN_ME_TO; |
|
- | 138 | call->private = newphid; |
|
- | 139 | break; |
|
- | 140 | default: |
|
- | 141 | break; |
|
- | 142 | } |
|
- | 143 | return 0; |
|
- | 144 | } |
|
- | 145 | ||
120 | /****************************************************/ |
146 | /****************************************************/ |
121 | /* Functions called to process received call/answer |
147 | /* Functions called to process received call/answer |
122 | * before passing to uspace |
148 | * before passing to uspace |
123 | */ |
149 | */ |
124 | 150 | ||
125 | /** Do basic kernel processing of received call answer */ |
151 | /** Do basic kernel processing of received call answer */ |
126 | static int process_answer(answerbox_t *box,call_t *call) |
152 | static void process_answer(call_t *call) |
127 | { |
153 | { |
128 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
154 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
129 | call->flags & IPC_CALL_FORWARDED) |
155 | call->flags & IPC_CALL_FORWARDED) |
130 | IPC_SET_RETVAL(call->data, EFORWARD); |
156 | IPC_SET_RETVAL(call->data, EFORWARD); |
- | 157 | ||
- | 158 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
|
- | 159 | if (IPC_GET_RETVAL(call->data)) |
|
- | 160 | phone_dealloc(call->private); |
|
131 | return 0; |
161 | else |
- | 162 | IPC_SET_ARG3(call->data, call->private); |
|
- | 163 | } |
|
132 | } |
164 | } |
133 | 165 | ||
134 | /** Do basic kernel processing of received call request |
166 | /** Do basic kernel processing of received call request |
135 | * |
167 | * |
136 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
168 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
137 | */ |
169 | */ |
138 | static int process_request(answerbox_t *box,call_t *call) |
170 | static int process_request(answerbox_t *box,call_t *call) |
139 | { |
171 | { |
140 | int phoneid; |
172 | int phoneid; |
141 | 173 | ||
142 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
174 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
143 | phoneid = phone_alloc(); |
175 | phoneid = phone_alloc(); |
144 | if (phoneid < 0) { /* Failed to allocate phone */ |
176 | if (phoneid < 0) { /* Failed to allocate phone */ |
145 | IPC_SET_RETVAL(call->data, ELIMIT); |
177 | IPC_SET_RETVAL(call->data, ELIMIT); |
146 | ipc_answer(box,call); |
178 | ipc_answer(box,call); |
147 | return -1; |
179 | return -1; |
148 | } |
180 | } |
149 | IPC_SET_ARG3(call->data, phoneid); |
181 | IPC_SET_ARG3(call->data, phoneid); |
150 | } |
182 | } |
151 | return 0; |
183 | return 0; |
152 | } |
184 | } |
153 | 185 | ||
154 | /** Send a call over IPC, wait for reply, return to user |
186 | /** Send a call over IPC, wait for reply, return to user |
155 | * |
187 | * |
156 | * @return Call identification, returns -1 on fatal error, |
188 | * @return Call identification, returns -1 on fatal error, |
157 | -2 on 'Too many async request, handle answers first |
189 | -2 on 'Too many async request, handle answers first |
158 | */ |
190 | */ |
159 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
191 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
160 | __native arg1, ipc_data_t *data) |
192 | __native arg1, ipc_data_t *data) |
161 | { |
193 | { |
162 | call_t call; |
194 | call_t call; |
163 | phone_t *phone; |
195 | phone_t *phone; |
164 | - | ||
165 | if (is_system_method(method)) |
- | |
166 | return EPERM; |
196 | int res; |
167 | 197 | ||
168 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
198 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
169 | 199 | ||
170 | ipc_call_static_init(&call); |
200 | ipc_call_static_init(&call); |
171 | IPC_SET_METHOD(call.data, method); |
201 | IPC_SET_METHOD(call.data, method); |
172 | IPC_SET_ARG1(call.data, arg1); |
202 | IPC_SET_ARG1(call.data, arg1); |
173 | 203 | ||
- | 204 | if (!(res=request_preprocess(&call))) { |
|
174 | ipc_call_sync(phone, &call); |
205 | ipc_call_sync(phone, &call); |
- | 206 | process_answer(&call); |
|
175 | 207 | } else |
|
- | 208 | IPC_SET_RETVAL(call.data, res); |
|
176 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
209 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
177 | 210 | ||
178 | return 0; |
211 | return 0; |
179 | } |
212 | } |
180 | 213 | ||
181 | /** Synchronous IPC call allowing to send whole message */ |
214 | /** Synchronous IPC call allowing to send whole message */ |
182 | __native sys_ipc_call_sync(__native phoneid, ipc_data_t *question, |
215 | __native sys_ipc_call_sync(__native phoneid, ipc_data_t *question, |
183 | ipc_data_t *reply) |
216 | ipc_data_t *reply) |
184 | { |
217 | { |
185 | call_t call; |
218 | call_t call; |
186 | phone_t *phone; |
219 | phone_t *phone; |
- | 220 | int res; |
|
187 | 221 | ||
188 | ipc_call_static_init(&call); |
222 | ipc_call_static_init(&call); |
189 | copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
223 | copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
190 | 224 | ||
191 | if (is_system_method(IPC_GET_METHOD(call.data))) |
- | |
192 | return EPERM; |
- | |
193 | - | ||
194 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
225 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
195 | 226 | ||
- | 227 | if (!(res=request_preprocess(&call))) { |
|
196 | ipc_call_sync(phone, &call); |
228 | ipc_call_sync(phone, &call); |
- | 229 | process_answer(&call); |
|
- | 230 | } else |
|
- | 231 | IPC_SET_RETVAL(call.data, res); |
|
197 | 232 | ||
198 | STRUCT_TO_USPACE(&reply->args, &call.data.args); |
233 | STRUCT_TO_USPACE(&reply->args, &call.data.args); |
199 | 234 | ||
200 | return 0; |
235 | return 0; |
201 | } |
236 | } |
202 | 237 | ||
203 | /** Check that the task did not exceed allowed limit |
238 | /** Check that the task did not exceed allowed limit |
204 | * |
239 | * |
205 | * @return 0 - Limit OK, -1 - limit exceeded |
240 | * @return 0 - Limit OK, -1 - limit exceeded |
206 | */ |
241 | */ |
207 | static int check_call_limit(void) |
242 | static int check_call_limit(void) |
208 | { |
243 | { |
209 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
244 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
210 | atomic_dec(&TASK->active_calls); |
245 | atomic_dec(&TASK->active_calls); |
211 | return -1; |
246 | return -1; |
212 | } |
247 | } |
213 | return 0; |
248 | return 0; |
214 | } |
249 | } |
215 | 250 | ||
216 | /** Send an asynchronous call over ipc |
251 | /** Send an asynchronous call over ipc |
217 | * |
252 | * |
218 | * @return Call identification, returns -1 on fatal error, |
253 | * @return Call identification, returns -1 on fatal error, |
219 | -2 on 'Too many async request, handle answers first |
254 | -2 on 'Too many async request, handle answers first |
220 | */ |
255 | */ |
221 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
256 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
222 | __native arg1, __native arg2) |
257 | __native arg1, __native arg2) |
223 | { |
258 | { |
224 | call_t *call; |
259 | call_t *call; |
225 | phone_t *phone; |
260 | phone_t *phone; |
226 | - | ||
227 | if (is_system_method(method)) |
- | |
228 | return IPC_CALLRET_FATAL; |
261 | int res; |
229 | 262 | ||
230 | if (check_call_limit()) |
263 | if (check_call_limit()) |
231 | return IPC_CALLRET_TEMPORARY; |
264 | return IPC_CALLRET_TEMPORARY; |
232 | 265 | ||
233 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
266 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
234 | 267 | ||
235 | call = ipc_call_alloc(); |
268 | call = ipc_call_alloc(); |
236 | IPC_SET_METHOD(call->data, method); |
269 | IPC_SET_METHOD(call->data, method); |
237 | IPC_SET_ARG1(call->data, arg1); |
270 | IPC_SET_ARG1(call->data, arg1); |
238 | IPC_SET_ARG2(call->data, arg2); |
271 | IPC_SET_ARG2(call->data, arg2); |
239 | 272 | ||
- | 273 | if (!(res=request_preprocess(call))) |
|
240 | ipc_call(phone, call); |
274 | ipc_call(phone, call); |
- | 275 | else |
|
- | 276 | ipc_backsend_err(phone, call, res); |
|
241 | 277 | ||
242 | return (__native) call; |
278 | return (__native) call; |
243 | } |
279 | } |
244 | 280 | ||
245 | /** Synchronous IPC call allowing to send whole message |
281 | /** Synchronous IPC call allowing to send whole message |
246 | * |
282 | * |
247 | * @return The same as sys_ipc_call_async |
283 | * @return The same as sys_ipc_call_async |
248 | */ |
284 | */ |
249 | __native sys_ipc_call_async(__native phoneid, ipc_data_t *data) |
285 | __native sys_ipc_call_async(__native phoneid, ipc_data_t *data) |
250 | { |
286 | { |
251 | call_t *call; |
287 | call_t *call; |
252 | phone_t *phone; |
288 | phone_t *phone; |
- | 289 | int res; |
|
253 | 290 | ||
254 | if (check_call_limit()) |
291 | if (check_call_limit()) |
255 | return IPC_CALLRET_TEMPORARY; |
292 | return IPC_CALLRET_TEMPORARY; |
256 | 293 | ||
257 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
294 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
258 | 295 | ||
259 | call = ipc_call_alloc(); |
296 | call = ipc_call_alloc(); |
260 | copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
297 | copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
261 | - | ||
262 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
298 | if (!(res=request_preprocess(call))) |
263 | ipc_call_free(call); |
- | |
264 | return EPERM; |
- | |
265 | } |
- | |
266 | - | ||
267 | ipc_call(phone, call); |
299 | ipc_call(phone, call); |
- | 300 | else |
|
- | 301 | ipc_backsend_err(phone, call, res); |
|
268 | 302 | ||
269 | return (__native) call; |
303 | return (__native) call; |
270 | } |
304 | } |
271 | 305 | ||
272 | /** Forward received call to another destination |
306 | /** Forward received call to another destination |
273 | * |
307 | * |
274 | * The arg1 and arg2 are changed in the forwarded message |
308 | * The arg1 and arg2 are changed in the forwarded message |
275 | * |
309 | * |
276 | * Warning: If implementing non-fast version, make sure that |
310 | * Warning: If implementing non-fast version, make sure that |
277 | * arg3 is not rewritten for certain system IPC |
311 | * arg3 is not rewritten for certain system IPC |
278 | */ |
312 | */ |
279 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
313 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
280 | __native method, __native arg1) |
314 | __native method, __native arg1) |
281 | { |
315 | { |
282 | call_t *call; |
316 | call_t *call; |
283 | phone_t *phone; |
317 | phone_t *phone; |
284 | 318 | ||
285 | call = get_call(callid); |
319 | call = get_call(callid); |
286 | if (!call) |
320 | if (!call) |
287 | return ENOENT; |
321 | return ENOENT; |
288 | 322 | ||
289 | call->flags |= IPC_CALL_FORWARDED; |
323 | call->flags |= IPC_CALL_FORWARDED; |
290 | 324 | ||
291 | GET_CHECK_PHONE(phone, phoneid, { |
325 | GET_CHECK_PHONE(phone, phoneid, { |
292 | IPC_SET_RETVAL(call->data, EFORWARD); |
326 | IPC_SET_RETVAL(call->data, EFORWARD); |
293 | ipc_answer(&TASK->answerbox, call); |
327 | ipc_answer(&TASK->answerbox, call); |
294 | return ENOENT; |
328 | return ENOENT; |
295 | }); |
329 | }); |
296 | 330 | ||
297 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
331 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
298 | IPC_SET_RETVAL(call->data, EFORWARD); |
332 | IPC_SET_RETVAL(call->data, EFORWARD); |
299 | ipc_answer(&TASK->answerbox, call); |
333 | ipc_answer(&TASK->answerbox, call); |
300 | return EPERM; |
334 | return EPERM; |
301 | } |
335 | } |
302 | 336 | ||
303 | /* Userspace is not allowed to change method of system methods |
337 | /* Userspace is not allowed to change method of system methods |
304 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
338 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
305 | */ |
339 | */ |
306 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
340 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
- | 341 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
|
- | 342 | phone_dealloc(IPC_GET_ARG3(call->data)); |
|
- | 343 | ||
307 | IPC_SET_ARG1(call->data, method); |
344 | IPC_SET_ARG1(call->data, method); |
308 | IPC_SET_ARG2(call->data, arg1); |
345 | IPC_SET_ARG2(call->data, arg1); |
309 | } else { |
346 | } else { |
310 | IPC_SET_METHOD(call->data, method); |
347 | IPC_SET_METHOD(call->data, method); |
311 | IPC_SET_ARG1(call->data, arg1); |
348 | IPC_SET_ARG1(call->data, arg1); |
312 | } |
349 | } |
313 | 350 | ||
314 | return ipc_forward(call, phone, &TASK->answerbox); |
351 | return ipc_forward(call, phone, &TASK->answerbox); |
315 | } |
352 | } |
316 | 353 | ||
317 | /** Send IPC answer */ |
354 | /** Send IPC answer */ |
318 | __native sys_ipc_answer_fast(__native callid, __native retval, |
355 | __native sys_ipc_answer_fast(__native callid, __native retval, |
319 | __native arg1, __native arg2) |
356 | __native arg1, __native arg2) |
320 | { |
357 | { |
321 | call_t *call; |
358 | call_t *call; |
322 | ipc_data_t saved_data; |
359 | ipc_data_t saved_data; |
323 | int saveddata = 0; |
360 | int saveddata = 0; |
324 | 361 | ||
325 | call = get_call(callid); |
362 | call = get_call(callid); |
326 | if (!call) |
363 | if (!call) |
327 | return ENOENT; |
364 | return ENOENT; |
328 | 365 | ||
329 | if (answer_need_old(call)) { |
366 | if (answer_need_old(call)) { |
330 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
367 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
331 | saveddata = 1; |
368 | saveddata = 1; |
332 | } |
369 | } |
333 | 370 | ||
334 | IPC_SET_RETVAL(call->data, retval); |
371 | IPC_SET_RETVAL(call->data, retval); |
335 | IPC_SET_ARG1(call->data, arg1); |
372 | IPC_SET_ARG1(call->data, arg1); |
336 | IPC_SET_ARG2(call->data, arg2); |
373 | IPC_SET_ARG2(call->data, arg2); |
337 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
374 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
338 | 375 | ||
339 | ipc_answer(&TASK->answerbox, call); |
376 | ipc_answer(&TASK->answerbox, call); |
340 | return 0; |
377 | return 0; |
341 | } |
378 | } |
342 | 379 | ||
343 | /** Send IPC answer */ |
380 | /** Send IPC answer */ |
344 | __native sys_ipc_answer(__native callid, ipc_data_t *data) |
381 | __native sys_ipc_answer(__native callid, ipc_data_t *data) |
345 | { |
382 | { |
346 | call_t *call; |
383 | call_t *call; |
347 | ipc_data_t saved_data; |
384 | ipc_data_t saved_data; |
348 | int saveddata = 0; |
385 | int saveddata = 0; |
349 | 386 | ||
350 | call = get_call(callid); |
387 | call = get_call(callid); |
351 | if (!call) |
388 | if (!call) |
352 | return ENOENT; |
389 | return ENOENT; |
353 | 390 | ||
354 | if (answer_need_old(call)) { |
391 | if (answer_need_old(call)) { |
355 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
392 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
356 | saveddata = 1; |
393 | saveddata = 1; |
357 | } |
394 | } |
358 | copy_from_uspace(&call->data.args, &data->args, |
395 | copy_from_uspace(&call->data.args, &data->args, |
359 | sizeof(call->data.args)); |
396 | sizeof(call->data.args)); |
360 | 397 | ||
361 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
398 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
362 | 399 | ||
363 | ipc_answer(&TASK->answerbox, call); |
400 | ipc_answer(&TASK->answerbox, call); |
364 | 401 | ||
365 | return 0; |
402 | return 0; |
366 | } |
403 | } |
367 | 404 | ||
368 | /** Ask the other side of connection to do 'callback' connection |
- | |
369 | * |
- | |
370 | * @return 0 if no error, error otherwise |
- | |
371 | */ |
- | |
372 | __native sys_ipc_connect_to_me(__native phoneid, __native arg1, |
- | |
373 | __native arg2, task_id_t *taskid) |
- | |
374 | { |
- | |
375 | call_t call; |
- | |
376 | phone_t *phone; |
- | |
377 | - | ||
378 | ipc_call_static_init(&call); |
- | |
379 | IPC_SET_METHOD(call.data, IPC_M_CONNECT_TO_ME); |
- | |
380 | IPC_SET_ARG1(call.data, arg1); |
- | |
381 | IPC_SET_ARG2(call.data, arg2); |
- | |
382 | - | ||
383 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
- | |
384 | - | ||
385 | ipc_call_sync(phone, &call); |
- | |
386 | - | ||
387 | if (!IPC_GET_RETVAL(call.data) && taskid) |
- | |
388 | STRUCT_TO_USPACE(taskid, &phone->callee->task->taskid); |
- | |
389 | - | ||
390 | return IPC_GET_RETVAL(call.data); |
- | |
391 | } |
- | |
392 | - | ||
393 | /** Ask target process to connect me somewhere |
- | |
394 | * |
- | |
395 | * @return phoneid - on success, error otherwise |
- | |
396 | */ |
- | |
397 | __native sys_ipc_connect_me_to(__native phoneid, __native arg1, |
- | |
398 | __native arg2) |
- | |
399 | { |
- | |
400 | call_t call; |
- | |
401 | phone_t *phone; |
- | |
402 | int newphid; |
- | |
403 | - | ||
404 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
- | |
405 | - | ||
406 | newphid = phone_alloc(); |
- | |
407 | if (newphid < 0) |
- | |
408 | return ELIMIT; |
- | |
409 | - | ||
410 | ipc_call_static_init(&call); |
- | |
411 | IPC_SET_METHOD(call.data, IPC_M_CONNECT_ME_TO); |
- | |
412 | IPC_SET_ARG1(call.data, arg1); |
- | |
413 | IPC_SET_ARG2(call.data, arg2); |
- | |
414 | IPC_SET_ARG3(call.data, (__native)&TASK->phones[newphid]); |
- | |
415 | - | ||
416 | ipc_call_sync(phone, &call); |
- | |
417 | - | ||
418 | if (IPC_GET_RETVAL(call.data)) { /* Connection failed */ |
- | |
419 | phone_dealloc(newphid); |
- | |
420 | return IPC_GET_RETVAL(call.data); |
- | |
421 | } |
- | |
422 | - | ||
423 | return newphid; |
- | |
424 | } |
- | |
425 | - | ||
426 | /** Hang up the phone |
405 | /** Hang up the phone |
427 | * |
406 | * |
428 | * |
- | |
429 | * |
- | |
430 | */ |
407 | */ |
431 | __native sys_ipc_hangup(int phoneid) |
408 | __native sys_ipc_hangup(int phoneid) |
432 | { |
409 | { |
433 | phone_t *phone; |
410 | phone_t *phone; |
434 | 411 | ||
435 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
412 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
436 | 413 | ||
437 | if (ipc_phone_hangup(phone)) |
414 | if (ipc_phone_hangup(phone)) |
438 | return -1; |
415 | return -1; |
439 | 416 | ||
440 | return 0; |
417 | return 0; |
441 | } |
418 | } |
442 | 419 | ||
443 | /** Wait for incoming ipc call or answer |
420 | /** Wait for incoming ipc call or answer |
444 | * |
421 | * |
445 | * @param calldata Pointer to buffer where the call/answer data is stored |
422 | * @param calldata Pointer to buffer where the call/answer data is stored |
446 | * @param taskid On 'CONNECT_ME_TO' call it is filled with 'taskid' of |
423 | * @param taskid On 'CONNECT_ME_TO' call it is filled with 'taskid' of |
447 | * the caller. |
424 | * the caller. |
448 | * @param flags |
425 | * @param flags |
449 | * @return Callid, if callid & 1, then the call is answer |
426 | * @return Callid, if callid & 1, then the call is answer |
450 | */ |
427 | */ |
451 | __native sys_ipc_wait_for_call(ipc_data_t *calldata, task_id_t *taskid, |
428 | __native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags) |
452 | __native flags) |
- | |
453 | - | ||
454 | { |
429 | { |
455 | call_t *call; |
430 | call_t *call; |
456 | 431 | ||
457 | restart: |
432 | restart: |
458 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
433 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
459 | if (!call) |
434 | if (!call) |
460 | return 0; |
435 | return 0; |
461 | 436 | ||
462 | if (call->flags & IPC_CALL_ANSWERED) { |
437 | if (call->flags & IPC_CALL_ANSWERED) { |
463 | if (process_answer(&TASK->answerbox, call)) |
438 | process_answer(call); |
464 | goto restart; |
- | |
465 | 439 | ||
466 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
440 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
467 | 441 | ||
468 | atomic_dec(&TASK->active_calls); |
442 | atomic_dec(&TASK->active_calls); |
469 | 443 | ||
470 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
444 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
471 | ipc_call_free(call); |
445 | ipc_call_free(call); |
472 | goto restart; |
446 | goto restart; |
473 | } |
447 | } |
474 | 448 | ||
475 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
449 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
476 | ipc_call_free(call); |
450 | ipc_call_free(call); |
477 | 451 | ||
478 | return ((__native)call) | IPC_CALLID_ANSWERED; |
452 | return ((__native)call) | IPC_CALLID_ANSWERED; |
479 | } |
453 | } |
480 | 454 | ||
481 | if (process_request(&TASK->answerbox, call)) |
455 | if (process_request(&TASK->answerbox, call)) |
482 | goto restart; |
456 | goto restart; |
483 | 457 | ||
484 | /* Include phone address('id') of the caller in the request */ |
458 | /* Include phone address('id') of the caller in the request, |
- | 459 | * copy whole call->data, not only call->data.args */ |
|
485 | STRUCT_TO_USPACE(calldata, &call->data); |
460 | STRUCT_TO_USPACE(calldata, &call->data); |
486 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
- | |
487 | STRUCT_TO_USPACE(taskid, &TASK->taskid); |
- | |
488 | return (__native)call; |
461 | return (__native)call; |
489 | } |
462 | } |
490 | 463 |