Rev 1084 | Rev 1088 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1084 | Rev 1086 | ||
---|---|---|---|
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 | /* TODO: multi-threaded connect-to-me can cause race condition |
- | |
46 | * on phone, add counter + thread_kill?? |
- | |
47 | * |
- | |
48 | */ |
- | |
49 | - | ||
50 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
45 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
51 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
46 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
52 | phone = &TASK->phones[phoneid]; \ |
47 | phone = &TASK->phones[phoneid]; \ |
53 | } |
48 | } |
54 | 49 | ||
- | 50 | #define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*src)) |
|
55 | 51 | ||
56 | /** Return true if the method is a system method */ |
52 | /** Return true if the method is a system method */ |
57 | static inline int is_system_method(__native method) |
53 | static inline int is_system_method(__native method) |
58 | { |
54 | { |
59 | if (method <= IPC_M_LAST_SYSTEM) |
55 | if (method <= IPC_M_LAST_SYSTEM) |
60 | return 1; |
56 | return 1; |
61 | return 0; |
57 | return 0; |
62 | } |
58 | } |
63 | 59 | ||
64 | /** Return true if the message with this method is forwardable |
60 | /** Return true if the message with this method is forwardable |
65 | * |
61 | * |
66 | * - some system messages may be forwarded, for some of them |
62 | * - some system messages may be forwarded, for some of them |
67 | * it is useless |
63 | * it is useless |
68 | */ |
64 | */ |
69 | static inline int is_forwardable(__native method) |
65 | static inline int is_forwardable(__native method) |
70 | { |
66 | { |
- | 67 | if (method == IPC_M_PHONE_HUNGUP) |
|
- | 68 | return 0; /* This message is meant only for the receiver */ |
|
71 | return 1; |
69 | return 1; |
72 | } |
70 | } |
73 | 71 | ||
74 | /****************************************************/ |
72 | /****************************************************/ |
75 | /* Functions that preprocess answer before sending |
73 | /* Functions that preprocess answer before sending |
76 | * it to the recepient |
74 | * it to the recepient |
77 | */ |
75 | */ |
78 | 76 | ||
79 | /** Return true if the caller (ipc_answer) should save |
77 | /** Return true if the caller (ipc_answer) should save |
80 | * the old call contents and call answer_preprocess |
78 | * the old call contents and call answer_preprocess |
81 | */ |
79 | */ |
82 | static inline int answer_will_preprocess(call_t *call) |
80 | static inline int answer_will_preprocess(call_t *call) |
83 | { |
81 | { |
84 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECTTOME) |
82 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
85 | return 1; |
83 | return 1; |
86 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECTMETO) |
84 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
87 | return 1; |
85 | return 1; |
88 | return 0; |
86 | return 0; |
89 | } |
87 | } |
90 | 88 | ||
91 | /** Interpret process answer as control information */ |
89 | /** Interpret process answer as control information */ |
92 | 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) |
93 | { |
91 | { |
94 | int phoneid; |
92 | int phoneid; |
95 | 93 | ||
96 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECTTOME) { |
94 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
97 | phoneid = IPC_GET_ARG3(*olddata); |
95 | phoneid = IPC_GET_ARG3(*olddata); |
98 | if (IPC_GET_RETVAL(answer->data)) { |
96 | if (IPC_GET_RETVAL(answer->data)) { |
99 | /* The connection was not accepted */ |
97 | /* The connection was not accepted */ |
100 | phone_dealloc(phoneid); |
98 | phone_dealloc(phoneid); |
101 | } else { |
99 | } else { |
102 | /* The connection was accepted */ |
100 | /* The connection was accepted */ |
103 | phone_connect(phoneid,&answer->sender->answerbox); |
101 | phone_connect(phoneid,&answer->sender->answerbox); |
104 | } |
102 | } |
105 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECTMETO) { |
103 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
106 | /* If the users accepted call, connect */ |
104 | /* If the users accepted call, connect */ |
107 | if (!IPC_GET_RETVAL(answer->data)) { |
105 | if (!IPC_GET_RETVAL(answer->data)) { |
108 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
106 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
109 | &TASK->answerbox); |
107 | &TASK->answerbox); |
110 | } |
108 | } |
111 | } |
109 | } |
112 | } |
110 | } |
113 | 111 | ||
114 | /****************************************************/ |
112 | /****************************************************/ |
115 | /* Functions called to process received call/answer |
113 | /* Functions called to process received call/answer |
116 | * before passing to uspace |
114 | * before passing to uspace |
117 | */ |
115 | */ |
118 | 116 | ||
119 | /** Do basic kernel processing of received call answer */ |
117 | /** Do basic kernel processing of received call answer */ |
120 | static int process_answer(answerbox_t *box,call_t *call) |
118 | static int process_answer(answerbox_t *box,call_t *call) |
121 | { |
119 | { |
122 | return 0; |
120 | return 0; |
123 | } |
121 | } |
124 | 122 | ||
125 | /** Do basic kernel processing of received call request |
123 | /** Do basic kernel processing of received call request |
126 | * |
124 | * |
127 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
125 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
128 | */ |
126 | */ |
129 | static int process_request(answerbox_t *box,call_t *call) |
127 | static int process_request(answerbox_t *box,call_t *call) |
130 | { |
128 | { |
131 | int phoneid; |
129 | int phoneid; |
132 | 130 | ||
133 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECTTOME) { |
131 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
134 | phoneid = phone_alloc(); |
132 | phoneid = phone_alloc(); |
135 | if (phoneid < 0) { /* Failed to allocate phone */ |
133 | if (phoneid < 0) { /* Failed to allocate phone */ |
136 | IPC_SET_RETVAL(call->data, ELIMIT); |
134 | IPC_SET_RETVAL(call->data, ELIMIT); |
137 | ipc_answer(box,call); |
135 | ipc_answer(box,call); |
138 | return -1; |
136 | return -1; |
139 | } |
137 | } |
140 | IPC_SET_ARG3(call->data, phoneid); |
138 | IPC_SET_ARG3(call->data, phoneid); |
141 | } |
139 | } |
142 | return 0; |
140 | return 0; |
143 | } |
141 | } |
144 | 142 | ||
145 | /** Send a call over IPC, wait for reply, return to user |
143 | /** Send a call over IPC, wait for reply, return to user |
146 | * |
144 | * |
147 | * @return Call identification, returns -1 on fatal error, |
145 | * @return Call identification, returns -1 on fatal error, |
148 | -2 on 'Too many async request, handle answers first |
146 | -2 on 'Too many async request, handle answers first |
149 | */ |
147 | */ |
150 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
148 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
151 | __native arg1, __native *data) |
149 | __native arg1, ipc_data_t *data) |
152 | { |
150 | { |
153 | call_t call; |
151 | call_t call; |
154 | phone_t *phone; |
152 | phone_t *phone; |
155 | 153 | ||
156 | if (is_system_method(method)) |
154 | if (is_system_method(method)) |
157 | return EPERM; |
155 | return EPERM; |
158 | 156 | ||
159 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
157 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
160 | 158 | ||
161 | ipc_call_static_init(&call); |
159 | ipc_call_static_init(&call); |
162 | IPC_SET_METHOD(call.data, method); |
160 | IPC_SET_METHOD(call.data, method); |
163 | IPC_SET_ARG1(call.data, arg1); |
161 | IPC_SET_ARG1(call.data, arg1); |
164 | 162 | ||
165 | ipc_call_sync(phone, &call); |
163 | ipc_call_sync(phone, &call); |
166 | 164 | ||
167 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
165 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
168 | 166 | ||
169 | return 0; |
167 | return 0; |
170 | } |
168 | } |
171 | 169 | ||
172 | /** Synchronous IPC call allowing to send whole message */ |
170 | /** Synchronous IPC call allowing to send whole message */ |
173 | __native sys_ipc_call_sync(__native phoneid, __native *question, |
171 | __native sys_ipc_call_sync(__native phoneid, ipc_data_t *question, |
174 | __native *reply) |
172 | ipc_data_t *reply) |
175 | { |
173 | { |
176 | call_t call; |
174 | call_t call; |
177 | phone_t *phone; |
175 | phone_t *phone; |
178 | 176 | ||
179 | ipc_call_static_init(&call); |
177 | ipc_call_static_init(&call); |
180 | copy_from_uspace(&call.data, question, sizeof(call.data)); |
178 | copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
181 | 179 | ||
182 | if (is_system_method(IPC_GET_METHOD(call.data))) |
180 | if (is_system_method(IPC_GET_METHOD(call.data))) |
183 | return EPERM; |
181 | return EPERM; |
184 | 182 | ||
185 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
183 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
186 | 184 | ||
187 | ipc_call_sync(phone, &call); |
185 | ipc_call_sync(phone, &call); |
188 | 186 | ||
189 | copy_to_uspace(reply, &call.data, sizeof(call.data)); |
187 | STRUCT_TO_USPACE(&reply->args, &call.data.args); |
190 | 188 | ||
191 | return 0; |
189 | return 0; |
192 | } |
190 | } |
193 | 191 | ||
194 | /** Check that the task did not exceed allowed limit |
192 | /** Check that the task did not exceed allowed limit |
195 | * |
193 | * |
196 | * @return 0 - Limit OK, -1 - limit exceeded |
194 | * @return 0 - Limit OK, -1 - limit exceeded |
197 | */ |
195 | */ |
198 | static int check_call_limit(void) |
196 | static int check_call_limit(void) |
199 | { |
197 | { |
200 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
198 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
201 | atomic_dec(&TASK->active_calls); |
199 | atomic_dec(&TASK->active_calls); |
202 | return -1; |
200 | return -1; |
203 | } |
201 | } |
204 | return 0; |
202 | return 0; |
205 | } |
203 | } |
206 | 204 | ||
207 | /** Send an asynchronous call over ipc |
205 | /** Send an asynchronous call over ipc |
208 | * |
206 | * |
209 | * @return Call identification, returns -1 on fatal error, |
207 | * @return Call identification, returns -1 on fatal error, |
210 | -2 on 'Too many async request, handle answers first |
208 | -2 on 'Too many async request, handle answers first |
211 | */ |
209 | */ |
212 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
210 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
213 | __native arg1, __native arg2) |
211 | __native arg1, __native arg2) |
214 | { |
212 | { |
215 | call_t *call; |
213 | call_t *call; |
216 | phone_t *phone; |
214 | phone_t *phone; |
217 | 215 | ||
218 | if (is_system_method(method)) |
216 | if (is_system_method(method)) |
219 | return IPC_CALLRET_FATAL; |
217 | return IPC_CALLRET_FATAL; |
220 | 218 | ||
221 | if (check_call_limit()) |
219 | if (check_call_limit()) |
222 | return IPC_CALLRET_TEMPORARY; |
220 | return IPC_CALLRET_TEMPORARY; |
223 | 221 | ||
224 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
222 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
225 | 223 | ||
226 | call = ipc_call_alloc(); |
224 | call = ipc_call_alloc(); |
227 | IPC_SET_METHOD(call->data, method); |
225 | IPC_SET_METHOD(call->data, method); |
228 | IPC_SET_ARG1(call->data, arg1); |
226 | IPC_SET_ARG1(call->data, arg1); |
229 | IPC_SET_ARG2(call->data, arg2); |
227 | IPC_SET_ARG2(call->data, arg2); |
230 | 228 | ||
231 | ipc_call(phone, call); |
229 | ipc_call(phone, call); |
232 | 230 | ||
233 | return (__native) call; |
231 | return (__native) call; |
234 | } |
232 | } |
235 | 233 | ||
236 | /** Synchronous IPC call allowing to send whole message |
234 | /** Synchronous IPC call allowing to send whole message |
237 | * |
235 | * |
238 | * @return The same as sys_ipc_call_async |
236 | * @return The same as sys_ipc_call_async |
239 | */ |
237 | */ |
240 | __native sys_ipc_call_async(__native phoneid, __native *data) |
238 | __native sys_ipc_call_async(__native phoneid, ipc_data_t *data) |
241 | { |
239 | { |
242 | call_t *call; |
240 | call_t *call; |
243 | phone_t *phone; |
241 | phone_t *phone; |
244 | 242 | ||
245 | if (check_call_limit()) |
243 | if (check_call_limit()) |
246 | return IPC_CALLRET_TEMPORARY; |
244 | return IPC_CALLRET_TEMPORARY; |
247 | 245 | ||
248 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
246 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
249 | 247 | ||
250 | call = ipc_call_alloc(); |
248 | call = ipc_call_alloc(); |
251 | copy_from_uspace(&call->data, data, sizeof(call->data)); |
249 | copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
252 | 250 | ||
253 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
251 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
254 | ipc_call_free(call); |
252 | ipc_call_free(call); |
255 | return EPERM; |
253 | return EPERM; |
256 | } |
254 | } |
257 | 255 | ||
258 | ipc_call(phone, call); |
256 | ipc_call(phone, call); |
259 | 257 | ||
260 | return (__native) call; |
258 | return (__native) call; |
261 | } |
259 | } |
262 | 260 | ||
263 | /** Forward received call to another destination |
261 | /** Forward received call to another destination |
264 | * |
262 | * |
265 | * The arg1 and arg2 are changed in the forwarded message |
263 | * The arg1 and arg2 are changed in the forwarded message |
266 | * |
264 | * |
267 | * Warning: If implementing non-fast version, make sure that |
265 | * Warning: If implementing non-fast version, make sure that |
268 | * arg3 is not rewritten for certain system IPC |
266 | * arg3 is not rewritten for certain system IPC |
269 | */ |
267 | */ |
270 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
268 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
271 | __native method, __native arg1) |
269 | __native method, __native arg1) |
272 | { |
270 | { |
273 | call_t *call; |
271 | call_t *call; |
274 | phone_t *phone; |
272 | phone_t *phone; |
275 | 273 | ||
276 | call = get_call(callid); |
274 | call = get_call(callid); |
277 | if (!call) |
275 | if (!call) |
278 | return ENOENT; |
276 | return ENOENT; |
279 | 277 | ||
280 | GET_CHECK_PHONE(phone, phoneid, { |
278 | GET_CHECK_PHONE(phone, phoneid, { |
281 | IPC_SET_RETVAL(call->data, EFORWARD); |
279 | IPC_SET_RETVAL(call->data, EFORWARD); |
282 | ipc_answer(&TASK->answerbox, call); |
280 | ipc_answer(&TASK->answerbox, call); |
283 | return ENOENT; |
281 | return ENOENT; |
284 | }); |
282 | }); |
285 | 283 | ||
286 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
284 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
287 | IPC_SET_RETVAL(call->data, EFORWARD); |
285 | IPC_SET_RETVAL(call->data, EFORWARD); |
288 | ipc_answer(&TASK->answerbox, call); |
286 | ipc_answer(&TASK->answerbox, call); |
289 | return EPERM; |
287 | return EPERM; |
290 | } |
288 | } |
291 | 289 | ||
292 | /* Userspace is not allowed to change method of system methods |
290 | /* Userspace is not allowed to change method of system methods |
293 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
291 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
294 | */ |
292 | */ |
295 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
293 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
296 | IPC_SET_ARG1(call->data, method); |
294 | IPC_SET_ARG1(call->data, method); |
297 | IPC_SET_ARG2(call->data, arg1); |
295 | IPC_SET_ARG2(call->data, arg1); |
298 | } else { |
296 | } else { |
299 | IPC_SET_METHOD(call->data, method); |
297 | IPC_SET_METHOD(call->data, method); |
300 | IPC_SET_ARG1(call->data, arg1); |
298 | IPC_SET_ARG1(call->data, arg1); |
301 | } |
299 | } |
302 | 300 | ||
303 | ipc_forward(call, phone, &TASK->answerbox); |
301 | ipc_forward(call, phone, &TASK->answerbox); |
304 | 302 | ||
305 | return 0; |
303 | return 0; |
306 | } |
304 | } |
307 | 305 | ||
308 | /** Send IPC answer */ |
306 | /** Send IPC answer */ |
309 | __native sys_ipc_answer_fast(__native callid, __native retval, |
307 | __native sys_ipc_answer_fast(__native callid, __native retval, |
310 | __native arg1, __native arg2) |
308 | __native arg1, __native arg2) |
311 | { |
309 | { |
312 | call_t *call; |
310 | call_t *call; |
313 | ipc_data_t saved_data; |
311 | ipc_data_t saved_data; |
314 | int preprocess = 0; |
312 | int preprocess = 0; |
315 | 313 | ||
316 | call = get_call(callid); |
314 | call = get_call(callid); |
317 | if (!call) |
315 | if (!call) |
318 | return ENOENT; |
316 | return ENOENT; |
319 | 317 | ||
320 | if (answer_will_preprocess(call)) { |
318 | if (answer_will_preprocess(call)) { |
321 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
319 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
322 | preprocess = 1; |
320 | preprocess = 1; |
323 | } |
321 | } |
324 | 322 | ||
325 | IPC_SET_RETVAL(call->data, retval); |
323 | IPC_SET_RETVAL(call->data, retval); |
326 | IPC_SET_ARG1(call->data, arg1); |
324 | IPC_SET_ARG1(call->data, arg1); |
327 | IPC_SET_ARG2(call->data, arg2); |
325 | IPC_SET_ARG2(call->data, arg2); |
328 | 326 | ||
329 | if (preprocess) |
327 | if (preprocess) |
330 | answer_preprocess(call, &saved_data); |
328 | answer_preprocess(call, &saved_data); |
331 | 329 | ||
332 | ipc_answer(&TASK->answerbox, call); |
330 | ipc_answer(&TASK->answerbox, call); |
333 | return 0; |
331 | return 0; |
334 | } |
332 | } |
335 | 333 | ||
336 | /** Send IPC answer */ |
334 | /** Send IPC answer */ |
337 | inline __native sys_ipc_answer(__native callid, __native *data) |
335 | __native sys_ipc_answer(__native callid, ipc_data_t *data) |
338 | { |
336 | { |
339 | call_t *call; |
337 | call_t *call; |
340 | ipc_data_t saved_data; |
338 | ipc_data_t saved_data; |
341 | int preprocess = 0; |
339 | int preprocess = 0; |
342 | 340 | ||
343 | call = get_call(callid); |
341 | call = get_call(callid); |
344 | if (!call) |
342 | if (!call) |
345 | return ENOENT; |
343 | return ENOENT; |
346 | 344 | ||
347 | if (answer_will_preprocess(call)) { |
345 | if (answer_will_preprocess(call)) { |
348 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
346 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
349 | preprocess = 1; |
347 | preprocess = 1; |
350 | } |
348 | } |
351 | copy_from_uspace(&call->data, data, sizeof(call->data)); |
349 | copy_from_uspace(&call->data.args, &data->args, |
- | 350 | sizeof(call->data.args)); |
|
352 | 351 | ||
353 | if (preprocess) |
352 | if (preprocess) |
354 | answer_preprocess(call, &saved_data); |
353 | answer_preprocess(call, &saved_data); |
355 | 354 | ||
356 | ipc_answer(&TASK->answerbox, call); |
355 | ipc_answer(&TASK->answerbox, call); |
357 | 356 | ||
358 | return 0; |
357 | return 0; |
359 | } |
358 | } |
360 | 359 | ||
361 | /** Ask the other side of connection to do 'callback' connection |
360 | /** Ask the other side of connection to do 'callback' connection |
362 | * |
361 | * |
363 | * @return 0 if no error, error otherwise |
362 | * @return 0 if no error, error otherwise |
364 | */ |
363 | */ |
365 | __native sys_ipc_connect_to_me(__native phoneid, __native arg1, |
364 | __native sys_ipc_connect_to_me(__native phoneid, __native arg1, |
366 | __native arg2, task_id_t *taskid) |
365 | __native arg2, task_id_t *taskid) |
367 | { |
366 | { |
368 | call_t call; |
367 | call_t call; |
369 | phone_t *phone; |
368 | phone_t *phone; |
370 | 369 | ||
371 | ipc_call_static_init(&call); |
370 | ipc_call_static_init(&call); |
372 | IPC_SET_METHOD(call.data, IPC_M_CONNECTTOME); |
371 | IPC_SET_METHOD(call.data, IPC_M_CONNECT_TO_ME); |
373 | IPC_SET_ARG1(call.data, arg1); |
372 | IPC_SET_ARG1(call.data, arg1); |
374 | IPC_SET_ARG2(call.data, arg2); |
373 | IPC_SET_ARG2(call.data, arg2); |
375 | 374 | ||
376 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
375 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
377 | 376 | ||
378 | ipc_call_sync(phone, &call); |
377 | ipc_call_sync(phone, &call); |
379 | 378 | ||
380 | if (!IPC_GET_RETVAL(call.data) && taskid) |
379 | if (!IPC_GET_RETVAL(call.data) && taskid) |
381 | copy_to_uspace(taskid, |
- | |
382 | &phone->callee->task->taskid, |
380 | STRUCT_TO_USPACE(taskid, &phone->callee->task->taskid); |
383 | sizeof(TASK->taskid)); |
- | |
384 | 381 | ||
385 | return IPC_GET_RETVAL(call.data); |
382 | return IPC_GET_RETVAL(call.data); |
386 | } |
383 | } |
387 | 384 | ||
388 | /** Ask target process to connect me somewhere |
385 | /** Ask target process to connect me somewhere |
389 | * |
386 | * |
390 | * @return phoneid - on success, error otherwise |
387 | * @return phoneid - on success, error otherwise |
391 | */ |
388 | */ |
392 | __native sys_ipc_connect_me_to(__native phoneid, __native arg1, |
389 | __native sys_ipc_connect_me_to(__native phoneid, __native arg1, |
393 | __native arg2) |
390 | __native arg2) |
394 | { |
391 | { |
395 | call_t call; |
392 | call_t call; |
396 | phone_t *phone; |
393 | phone_t *phone; |
397 | int newphid; |
394 | int newphid; |
398 | 395 | ||
399 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
396 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
400 | 397 | ||
401 | newphid = phone_alloc(); |
398 | newphid = phone_alloc(); |
402 | if (newphid < 0) |
399 | if (newphid < 0) |
403 | return ELIMIT; |
400 | return ELIMIT; |
404 | 401 | ||
405 | ipc_call_static_init(&call); |
402 | ipc_call_static_init(&call); |
406 | IPC_SET_METHOD(call.data, IPC_M_CONNECTMETO); |
403 | IPC_SET_METHOD(call.data, IPC_M_CONNECT_ME_TO); |
407 | IPC_SET_ARG1(call.data, arg1); |
404 | IPC_SET_ARG1(call.data, arg1); |
408 | IPC_SET_ARG2(call.data, arg2); |
405 | IPC_SET_ARG2(call.data, arg2); |
409 | IPC_SET_ARG3(call.data, (__native)&TASK->phones[newphid]); |
406 | IPC_SET_ARG3(call.data, (__native)&TASK->phones[newphid]); |
410 | 407 | ||
411 | ipc_call_sync(phone, &call); |
408 | ipc_call_sync(phone, &call); |
412 | 409 | ||
413 | if (IPC_GET_RETVAL(call.data)) { /* Connection failed */ |
410 | if (IPC_GET_RETVAL(call.data)) { /* Connection failed */ |
414 | phone_dealloc(newphid); |
411 | phone_dealloc(newphid); |
415 | return IPC_GET_RETVAL(call.data); |
412 | return IPC_GET_RETVAL(call.data); |
416 | } |
413 | } |
417 | 414 | ||
418 | return newphid; |
415 | return newphid; |
419 | } |
416 | } |
420 | 417 | ||
421 | /** Wait for incoming ipc call or answer |
418 | /** Hang up the phone |
422 | * |
419 | * |
423 | * Generic function - can serve either as inkernel or userspace call |
- | |
424 | * - inside kernel does probably unnecessary copying of data (TODO) |
- | |
- | 420 | * |
|
425 | * |
421 | * |
- | 422 | */ |
|
- | 423 | __native sys_ipc_hangup(int phoneid) |
|
- | 424 | { |
|
426 | * @param result |
425 | phone_t *phone; |
- | 426 | ||
- | 427 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
|
- | 428 | ||
- | 429 | if (ipc_phone_hangup(phone)) |
|
- | 430 | return -1; |
|
- | 431 | ||
- | 432 | return 0; |
|
- | 433 | } |
|
- | 434 | ||
- | 435 | /** Wait for incoming ipc call or answer |
|
- | 436 | * |
|
- | 437 | * @param calldata Pointer to buffer where the call/answer data is stored |
|
- | 438 | * @param taskid On 'CONNECT_ME_TO' call it is filled with 'taskid' of |
|
427 | * @param taskid |
439 | * the caller. |
428 | * @param flags |
440 | * @param flags |
429 | * @return Callid, if callid & 1, then the call is answer |
441 | * @return Callid, if callid & 1, then the call is answer |
430 | */ |
442 | */ |
431 | inline __native sys_ipc_wait_for_call(ipc_data_t *calldata, |
443 | __native sys_ipc_wait_for_call(ipc_data_t *calldata, task_id_t *taskid, |
432 | task_id_t *taskid, |
- | |
433 | __native flags) |
444 | __native flags) |
434 | 445 | ||
435 | { |
446 | { |
436 | call_t *call; |
447 | call_t *call; |
437 | 448 | ||
438 | restart: |
449 | restart: |
439 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
450 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
440 | 451 | ||
441 | if (call->flags & IPC_CALL_ANSWERED) { |
452 | if (call->flags & IPC_CALL_ANSWERED) { |
442 | if (process_answer(&TASK->answerbox, call)) |
453 | if (process_answer(&TASK->answerbox, call)) |
443 | goto restart; |
454 | goto restart; |
444 | 455 | ||
445 | copy_to_uspace(calldata, &call->data, sizeof(call->data)); |
- | |
446 | atomic_dec(&TASK->active_calls); |
- | |
447 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
456 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
- | 457 | ||
- | 458 | atomic_dec(&TASK->active_calls); |
|
- | 459 | ||
- | 460 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
|
- | 461 | ipc_call_free(call); |
|
- | 462 | goto restart; |
|
- | 463 | } |
|
- | 464 | ||
- | 465 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
|
448 | ipc_call_free(call); |
466 | ipc_call_free(call); |
449 | 467 | ||
450 | return ((__native)call) | IPC_CALLID_ANSWERED; |
468 | return ((__native)call) | IPC_CALLID_ANSWERED; |
451 | } |
469 | } |
- | 470 | ||
452 | if (process_request(&TASK->answerbox, call)) |
471 | if (process_request(&TASK->answerbox, call)) |
453 | goto restart; |
472 | goto restart; |
- | 473 | ||
- | 474 | /* Include phone address('id') of the caller in the request */ |
|
454 | copy_to_uspace(calldata, &call->data, sizeof(call->data)); |
475 | STRUCT_TO_USPACE(calldata, &call->data); |
- | 476 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
|
455 | copy_to_uspace(taskid, (void *)&TASK->taskid, sizeof(TASK->taskid)); |
477 | STRUCT_TO_USPACE(taskid, &TASK->taskid); |
456 | return (__native)call; |
478 | return (__native)call; |
457 | } |
479 | } |
458 | - | ||
459 | 480 |