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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 | #include <proc/thread.h> |
31 | #include <proc/thread.h> |
32 | #include <errno.h> |
32 | #include <errno.h> |
33 | #include <memstr.h> |
33 | #include <memstr.h> |
34 | #include <debug.h> |
34 | #include <debug.h> |
35 | #include <ipc/ipc.h> |
35 | #include <ipc/ipc.h> |
36 | #include <ipc/sysipc.h> |
36 | #include <ipc/sysipc.h> |
37 | #include <ipc/irq.h> |
37 | #include <ipc/irq.h> |
38 | #include <ipc/ipcrsc.h> |
38 | #include <ipc/ipcrsc.h> |
39 | #include <arch/interrupt.h> |
39 | #include <arch/interrupt.h> |
40 | #include <print.h> |
40 | #include <print.h> |
41 | #include <syscall/copy.h> |
41 | #include <syscall/copy.h> |
42 | #include <security/cap.h> |
42 | #include <security/cap.h> |
- | 43 | #include <mm/as.h> |
|
43 | 44 | ||
44 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
45 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
45 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
46 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
46 | phone = &TASK->phones[phoneid]; \ |
47 | phone = &TASK->phones[phoneid]; \ |
47 | } |
48 | } |
48 | 49 | ||
49 | #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))) |
50 | 51 | ||
51 | /** Return true if the method is a system method */ |
52 | /** Return true if the method is a system method */ |
52 | static inline int is_system_method(__native method) |
53 | static inline int is_system_method(__native method) |
53 | { |
54 | { |
54 | if (method <= IPC_M_LAST_SYSTEM) |
55 | if (method <= IPC_M_LAST_SYSTEM) |
55 | return 1; |
56 | return 1; |
56 | return 0; |
57 | return 0; |
57 | } |
58 | } |
58 | 59 | ||
59 | /** Return true if the message with this method is forwardable |
60 | /** Return true if the message with this method is forwardable |
60 | * |
61 | * |
61 | * - some system messages may be forwarded, for some of them |
62 | * - some system messages may be forwarded, for some of them |
62 | * it is useless |
63 | * it is useless |
63 | */ |
64 | */ |
64 | static inline int is_forwardable(__native method) |
65 | static inline int is_forwardable(__native method) |
65 | { |
66 | { |
66 | if (method == IPC_M_PHONE_HUNGUP) |
67 | if (method == IPC_M_PHONE_HUNGUP) |
67 | return 0; /* This message is meant only for the receiver */ |
68 | return 0; /* This message is meant only for the receiver */ |
68 | return 1; |
69 | return 1; |
69 | } |
70 | } |
70 | 71 | ||
71 | /****************************************************/ |
72 | /****************************************************/ |
72 | /* Functions that preprocess answer before sending |
73 | /* Functions that preprocess answer before sending |
73 | * it to the recepient |
74 | * it to the recepient |
74 | */ |
75 | */ |
75 | 76 | ||
76 | /** Return true if the caller (ipc_answer) should save |
77 | /** Return true if the caller (ipc_answer) should save |
77 | * the old call contents for answer_preprocess |
78 | * the old call contents for answer_preprocess |
78 | */ |
79 | */ |
79 | static inline int answer_need_old(call_t *call) |
80 | static inline int answer_need_old(call_t *call) |
80 | { |
81 | { |
81 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
82 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
82 | return 1; |
83 | return 1; |
83 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
84 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
84 | return 1; |
85 | return 1; |
- | 86 | if (IPC_GET_METHOD(call->data) == IPC_M_AS_SEND) |
|
- | 87 | return 1; |
|
85 | return 0; |
88 | return 0; |
86 | } |
89 | } |
87 | 90 | ||
88 | /** Interpret process answer as control information */ |
91 | /** Interpret process answer as control information */ |
89 | static inline void answer_preprocess(call_t *answer, ipc_data_t *olddata) |
92 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
90 | { |
93 | { |
91 | int phoneid; |
94 | int phoneid; |
92 | 95 | ||
93 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
96 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
94 | /* In case of forward, hangup the forwared phone, |
97 | /* In case of forward, hangup the forwared phone, |
95 | * not the originator |
98 | * not the originator |
96 | */ |
99 | */ |
97 | spinlock_lock(&answer->data.phone->lock); |
100 | spinlock_lock(&answer->data.phone->lock); |
98 | spinlock_lock(&TASK->answerbox.lock); |
101 | spinlock_lock(&TASK->answerbox.lock); |
99 | if (answer->data.phone->callee) { |
102 | if (answer->data.phone->callee) { |
100 | list_remove(&answer->data.phone->list); |
103 | list_remove(&answer->data.phone->list); |
101 | answer->data.phone->callee = 0; |
104 | answer->data.phone->callee = 0; |
102 | } |
105 | } |
103 | spinlock_unlock(&TASK->answerbox.lock); |
106 | spinlock_unlock(&TASK->answerbox.lock); |
104 | spinlock_unlock(&answer->data.phone->lock); |
107 | spinlock_unlock(&answer->data.phone->lock); |
105 | } |
108 | } |
106 | 109 | ||
107 | if (!olddata) |
110 | if (!olddata) |
108 | return; |
111 | return 0; |
109 | 112 | ||
110 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
113 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
111 | phoneid = IPC_GET_ARG3(*olddata); |
114 | phoneid = IPC_GET_ARG3(*olddata); |
112 | if (IPC_GET_RETVAL(answer->data)) { |
115 | if (IPC_GET_RETVAL(answer->data)) { |
113 | /* The connection was not accepted */ |
116 | /* The connection was not accepted */ |
114 | phone_dealloc(phoneid); |
117 | phone_dealloc(phoneid); |
115 | } else { |
118 | } else { |
116 | /* The connection was accepted */ |
119 | /* The connection was accepted */ |
117 | phone_connect(phoneid,&answer->sender->answerbox); |
120 | phone_connect(phoneid,&answer->sender->answerbox); |
118 | /* Set 'phone identification' as arg3 of response */ |
121 | /* Set 'phone identification' as arg3 of response */ |
119 | IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]); |
122 | IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]); |
120 | } |
123 | } |
121 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
124 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
122 | /* If the users accepted call, connect */ |
125 | /* If the users accepted call, connect */ |
123 | if (!IPC_GET_RETVAL(answer->data)) { |
126 | if (!IPC_GET_RETVAL(answer->data)) { |
124 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
127 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
125 | &TASK->answerbox); |
128 | &TASK->answerbox); |
126 | } |
129 | } |
- | 130 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_SEND) { |
|
- | 131 | if (!IPC_GET_RETVAL(answer->data)) { /* Accepted, handle As_area receival */ |
|
- | 132 | return as_area_steal(answer->sender, |
|
- | 133 | IPC_GET_ARG2(*olddata),IPC_GET_ARG3(*olddata), |
|
- | 134 | IPC_GET_ARG1(answer->data)); |
|
- | 135 | } |
|
127 | } |
136 | } |
- | 137 | return 0; |
|
128 | } |
138 | } |
129 | 139 | ||
130 | /** Called before the request is sent |
140 | /** Called before the request is sent |
131 | * |
141 | * |
132 | * @return 0 - no error, -1 - report error to user |
142 | * @return 0 - no error, -1 - report error to user |
133 | */ |
143 | */ |
134 | static int request_preprocess(call_t *call) |
144 | static int request_preprocess(call_t *call) |
135 | { |
145 | { |
136 | int newphid; |
146 | int newphid; |
- | 147 | size_t size; |
|
137 | 148 | ||
138 | switch (IPC_GET_METHOD(call->data)) { |
149 | switch (IPC_GET_METHOD(call->data)) { |
139 | case IPC_M_CONNECT_ME_TO: |
150 | case IPC_M_CONNECT_ME_TO: |
140 | newphid = phone_alloc(); |
151 | newphid = phone_alloc(); |
141 | if (newphid < 0) |
152 | if (newphid < 0) |
142 | return ELIMIT; |
153 | return ELIMIT; |
143 | /* Set arg3 for server */ |
154 | /* Set arg3 for server */ |
144 | IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]); |
155 | IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]); |
145 | call->flags |= IPC_CALL_CONN_ME_TO; |
156 | call->flags |= IPC_CALL_CONN_ME_TO; |
146 | call->private = newphid; |
157 | call->private = newphid; |
147 | break; |
158 | break; |
- | 159 | case IPC_M_AS_SEND: |
|
- | 160 | size = as_get_size(IPC_GET_ARG2(call->data)); |
|
- | 161 | if (!size) { |
|
- | 162 | return EPERM; |
|
- | 163 | } |
|
- | 164 | IPC_SET_ARG3(call->data, size); |
|
- | 165 | break; |
|
148 | default: |
166 | default: |
149 | break; |
167 | break; |
150 | } |
168 | } |
151 | return 0; |
169 | return 0; |
152 | } |
170 | } |
153 | 171 | ||
154 | /****************************************************/ |
172 | /****************************************************/ |
155 | /* Functions called to process received call/answer |
173 | /* Functions called to process received call/answer |
156 | * before passing to uspace |
174 | * before passing to uspace |
157 | */ |
175 | */ |
158 | 176 | ||
159 | /** Do basic kernel processing of received call answer */ |
177 | /** Do basic kernel processing of received call answer */ |
160 | static void process_answer(call_t *call) |
178 | static void process_answer(call_t *call) |
161 | { |
179 | { |
162 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
180 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
163 | call->flags & IPC_CALL_FORWARDED) |
181 | call->flags & IPC_CALL_FORWARDED) |
164 | IPC_SET_RETVAL(call->data, EFORWARD); |
182 | IPC_SET_RETVAL(call->data, EFORWARD); |
165 | 183 | ||
166 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
184 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
167 | if (IPC_GET_RETVAL(call->data)) |
185 | if (IPC_GET_RETVAL(call->data)) |
168 | phone_dealloc(call->private); |
186 | phone_dealloc(call->private); |
169 | else |
187 | else |
170 | IPC_SET_ARG3(call->data, call->private); |
188 | IPC_SET_ARG3(call->data, call->private); |
171 | } |
189 | } |
172 | } |
190 | } |
173 | 191 | ||
174 | /** Do basic kernel processing of received call request |
192 | /** Do basic kernel processing of received call request |
175 | * |
193 | * |
176 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
194 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
177 | */ |
195 | */ |
178 | static int process_request(answerbox_t *box,call_t *call) |
196 | static int process_request(answerbox_t *box,call_t *call) |
179 | { |
197 | { |
180 | int phoneid; |
198 | int phoneid; |
181 | 199 | ||
182 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
200 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
183 | phoneid = phone_alloc(); |
201 | phoneid = phone_alloc(); |
184 | if (phoneid < 0) { /* Failed to allocate phone */ |
202 | if (phoneid < 0) { /* Failed to allocate phone */ |
185 | IPC_SET_RETVAL(call->data, ELIMIT); |
203 | IPC_SET_RETVAL(call->data, ELIMIT); |
186 | ipc_answer(box,call); |
204 | ipc_answer(box,call); |
187 | return -1; |
205 | return -1; |
188 | } |
206 | } |
189 | IPC_SET_ARG3(call->data, phoneid); |
207 | IPC_SET_ARG3(call->data, phoneid); |
190 | } |
208 | } |
191 | return 0; |
209 | return 0; |
192 | } |
210 | } |
193 | 211 | ||
194 | /** Send a call over IPC, wait for reply, return to user |
212 | /** Send a call over IPC, wait for reply, return to user |
195 | * |
213 | * |
196 | * @return Call identification, returns -1 on fatal error, |
214 | * @return Call identification, returns -1 on fatal error, |
197 | -2 on 'Too many async request, handle answers first |
215 | -2 on 'Too many async request, handle answers first |
198 | */ |
216 | */ |
199 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
217 | __native sys_ipc_call_sync_fast(__native phoneid, __native method, |
200 | __native arg1, ipc_data_t *data) |
218 | __native arg1, ipc_data_t *data) |
201 | { |
219 | { |
202 | call_t call; |
220 | call_t call; |
203 | phone_t *phone; |
221 | phone_t *phone; |
204 | int res; |
222 | int res; |
205 | 223 | ||
206 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
224 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
207 | 225 | ||
208 | ipc_call_static_init(&call); |
226 | ipc_call_static_init(&call); |
209 | IPC_SET_METHOD(call.data, method); |
227 | IPC_SET_METHOD(call.data, method); |
210 | IPC_SET_ARG1(call.data, arg1); |
228 | IPC_SET_ARG1(call.data, arg1); |
211 | 229 | ||
212 | if (!(res=request_preprocess(&call))) { |
230 | if (!(res=request_preprocess(&call))) { |
213 | ipc_call_sync(phone, &call); |
231 | ipc_call_sync(phone, &call); |
214 | process_answer(&call); |
232 | process_answer(&call); |
215 | } else |
233 | } else |
216 | IPC_SET_RETVAL(call.data, res); |
234 | IPC_SET_RETVAL(call.data, res); |
217 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
235 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
218 | 236 | ||
219 | return 0; |
237 | return 0; |
220 | } |
238 | } |
221 | 239 | ||
222 | /** Synchronous IPC call allowing to send whole message */ |
240 | /** Synchronous IPC call allowing to send whole message */ |
223 | __native sys_ipc_call_sync(__native phoneid, ipc_data_t *question, |
241 | __native sys_ipc_call_sync(__native phoneid, ipc_data_t *question, |
224 | ipc_data_t *reply) |
242 | ipc_data_t *reply) |
225 | { |
243 | { |
226 | call_t call; |
244 | call_t call; |
227 | phone_t *phone; |
245 | phone_t *phone; |
228 | int res; |
246 | int res; |
229 | int rc; |
247 | int rc; |
230 | 248 | ||
231 | ipc_call_static_init(&call); |
249 | ipc_call_static_init(&call); |
232 | rc = copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
250 | rc = copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
233 | if (rc != 0) |
251 | if (rc != 0) |
234 | return (__native) rc; |
252 | return (__native) rc; |
235 | 253 | ||
236 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
254 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
237 | 255 | ||
238 | if (!(res=request_preprocess(&call))) { |
256 | if (!(res=request_preprocess(&call))) { |
239 | ipc_call_sync(phone, &call); |
257 | ipc_call_sync(phone, &call); |
240 | process_answer(&call); |
258 | process_answer(&call); |
241 | } else |
259 | } else |
242 | IPC_SET_RETVAL(call.data, res); |
260 | IPC_SET_RETVAL(call.data, res); |
243 | 261 | ||
244 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
262 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
245 | if (rc != 0) |
263 | if (rc != 0) |
246 | return rc; |
264 | return rc; |
247 | 265 | ||
248 | return 0; |
266 | return 0; |
249 | } |
267 | } |
250 | 268 | ||
251 | /** Check that the task did not exceed allowed limit |
269 | /** Check that the task did not exceed allowed limit |
252 | * |
270 | * |
253 | * @return 0 - Limit OK, -1 - limit exceeded |
271 | * @return 0 - Limit OK, -1 - limit exceeded |
254 | */ |
272 | */ |
255 | static int check_call_limit(void) |
273 | static int check_call_limit(void) |
256 | { |
274 | { |
257 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
275 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
258 | atomic_dec(&TASK->active_calls); |
276 | atomic_dec(&TASK->active_calls); |
259 | return -1; |
277 | return -1; |
260 | } |
278 | } |
261 | return 0; |
279 | return 0; |
262 | } |
280 | } |
263 | 281 | ||
264 | /** Send an asynchronous call over ipc |
282 | /** Send an asynchronous call over ipc |
265 | * |
283 | * |
266 | * @return Call identification, returns -1 on fatal error, |
284 | * @return Call identification, returns -1 on fatal error, |
267 | -2 on 'Too many async request, handle answers first |
285 | -2 on 'Too many async request, handle answers first |
268 | */ |
286 | */ |
269 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
287 | __native sys_ipc_call_async_fast(__native phoneid, __native method, |
270 | __native arg1, __native arg2) |
288 | __native arg1, __native arg2) |
271 | { |
289 | { |
272 | call_t *call; |
290 | call_t *call; |
273 | phone_t *phone; |
291 | phone_t *phone; |
274 | int res; |
292 | int res; |
275 | 293 | ||
276 | if (check_call_limit()) |
294 | if (check_call_limit()) |
277 | return IPC_CALLRET_TEMPORARY; |
295 | return IPC_CALLRET_TEMPORARY; |
278 | 296 | ||
279 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
297 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
280 | 298 | ||
281 | call = ipc_call_alloc(0); |
299 | call = ipc_call_alloc(0); |
282 | IPC_SET_METHOD(call->data, method); |
300 | IPC_SET_METHOD(call->data, method); |
283 | IPC_SET_ARG1(call->data, arg1); |
301 | IPC_SET_ARG1(call->data, arg1); |
284 | IPC_SET_ARG2(call->data, arg2); |
302 | IPC_SET_ARG2(call->data, arg2); |
285 | 303 | ||
286 | if (!(res=request_preprocess(call))) |
304 | if (!(res=request_preprocess(call))) |
287 | ipc_call(phone, call); |
305 | ipc_call(phone, call); |
288 | else |
306 | else |
289 | ipc_backsend_err(phone, call, res); |
307 | ipc_backsend_err(phone, call, res); |
290 | 308 | ||
291 | return (__native) call; |
309 | return (__native) call; |
292 | } |
310 | } |
293 | 311 | ||
294 | /** Synchronous IPC call allowing to send whole message |
312 | /** Synchronous IPC call allowing to send whole message |
295 | * |
313 | * |
296 | * @return The same as sys_ipc_call_async |
314 | * @return The same as sys_ipc_call_async |
297 | */ |
315 | */ |
298 | __native sys_ipc_call_async(__native phoneid, ipc_data_t *data) |
316 | __native sys_ipc_call_async(__native phoneid, ipc_data_t *data) |
299 | { |
317 | { |
300 | call_t *call; |
318 | call_t *call; |
301 | phone_t *phone; |
319 | phone_t *phone; |
302 | int res; |
320 | int res; |
303 | int rc; |
321 | int rc; |
304 | 322 | ||
305 | if (check_call_limit()) |
323 | if (check_call_limit()) |
306 | return IPC_CALLRET_TEMPORARY; |
324 | return IPC_CALLRET_TEMPORARY; |
307 | 325 | ||
308 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
326 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
309 | 327 | ||
310 | call = ipc_call_alloc(0); |
328 | call = ipc_call_alloc(0); |
311 | rc = copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
329 | rc = copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
312 | if (rc != 0) { |
330 | if (rc != 0) { |
313 | ipc_call_free(call); |
331 | ipc_call_free(call); |
314 | return (__native) rc; |
332 | return (__native) rc; |
315 | } |
333 | } |
316 | if (!(res=request_preprocess(call))) |
334 | if (!(res=request_preprocess(call))) |
317 | ipc_call(phone, call); |
335 | ipc_call(phone, call); |
318 | else |
336 | else |
319 | ipc_backsend_err(phone, call, res); |
337 | ipc_backsend_err(phone, call, res); |
320 | 338 | ||
321 | return (__native) call; |
339 | return (__native) call; |
322 | } |
340 | } |
323 | 341 | ||
324 | /** Forward received call to another destination |
342 | /** Forward received call to another destination |
325 | * |
343 | * |
326 | * The arg1 and arg2 are changed in the forwarded message |
344 | * The arg1 and arg2 are changed in the forwarded message |
327 | * |
345 | * |
328 | * Warning: If implementing non-fast version, make sure that |
346 | * Warning: If implementing non-fast version, make sure that |
329 | * arg3 is not rewritten for certain system IPC |
347 | * arg3 is not rewritten for certain system IPC |
330 | */ |
348 | */ |
331 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
349 | __native sys_ipc_forward_fast(__native callid, __native phoneid, |
332 | __native method, __native arg1) |
350 | __native method, __native arg1) |
333 | { |
351 | { |
334 | call_t *call; |
352 | call_t *call; |
335 | phone_t *phone; |
353 | phone_t *phone; |
336 | 354 | ||
337 | call = get_call(callid); |
355 | call = get_call(callid); |
338 | if (!call) |
356 | if (!call) |
339 | return ENOENT; |
357 | return ENOENT; |
340 | 358 | ||
341 | call->flags |= IPC_CALL_FORWARDED; |
359 | call->flags |= IPC_CALL_FORWARDED; |
342 | 360 | ||
343 | GET_CHECK_PHONE(phone, phoneid, { |
361 | GET_CHECK_PHONE(phone, phoneid, { |
344 | IPC_SET_RETVAL(call->data, EFORWARD); |
362 | IPC_SET_RETVAL(call->data, EFORWARD); |
345 | ipc_answer(&TASK->answerbox, call); |
363 | ipc_answer(&TASK->answerbox, call); |
346 | return ENOENT; |
364 | return ENOENT; |
347 | }); |
365 | }); |
348 | 366 | ||
349 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
367 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
350 | IPC_SET_RETVAL(call->data, EFORWARD); |
368 | IPC_SET_RETVAL(call->data, EFORWARD); |
351 | ipc_answer(&TASK->answerbox, call); |
369 | ipc_answer(&TASK->answerbox, call); |
352 | return EPERM; |
370 | return EPERM; |
353 | } |
371 | } |
354 | 372 | ||
355 | /* Userspace is not allowed to change method of system methods |
373 | /* Userspace is not allowed to change method of system methods |
356 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
374 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
357 | */ |
375 | */ |
358 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
376 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
359 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
377 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
360 | phone_dealloc(IPC_GET_ARG3(call->data)); |
378 | phone_dealloc(IPC_GET_ARG3(call->data)); |
361 | 379 | ||
362 | IPC_SET_ARG1(call->data, method); |
380 | IPC_SET_ARG1(call->data, method); |
363 | IPC_SET_ARG2(call->data, arg1); |
381 | IPC_SET_ARG2(call->data, arg1); |
364 | } else { |
382 | } else { |
365 | IPC_SET_METHOD(call->data, method); |
383 | IPC_SET_METHOD(call->data, method); |
366 | IPC_SET_ARG1(call->data, arg1); |
384 | IPC_SET_ARG1(call->data, arg1); |
367 | } |
385 | } |
368 | 386 | ||
369 | return ipc_forward(call, phone, &TASK->answerbox); |
387 | return ipc_forward(call, phone, &TASK->answerbox); |
370 | } |
388 | } |
371 | 389 | ||
372 | /** Send IPC answer */ |
390 | /** Send IPC answer */ |
373 | __native sys_ipc_answer_fast(__native callid, __native retval, |
391 | __native sys_ipc_answer_fast(__native callid, __native retval, |
374 | __native arg1, __native arg2) |
392 | __native arg1, __native arg2) |
375 | { |
393 | { |
376 | call_t *call; |
394 | call_t *call; |
377 | ipc_data_t saved_data; |
395 | ipc_data_t saved_data; |
378 | int saveddata = 0; |
396 | int saveddata = 0; |
- | 397 | int rc; |
|
379 | 398 | ||
380 | call = get_call(callid); |
399 | call = get_call(callid); |
381 | if (!call) |
400 | if (!call) |
382 | return ENOENT; |
401 | return ENOENT; |
383 | 402 | ||
384 | if (answer_need_old(call)) { |
403 | if (answer_need_old(call)) { |
385 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
404 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
386 | saveddata = 1; |
405 | saveddata = 1; |
387 | } |
406 | } |
388 | 407 | ||
389 | IPC_SET_RETVAL(call->data, retval); |
408 | IPC_SET_RETVAL(call->data, retval); |
390 | IPC_SET_ARG1(call->data, arg1); |
409 | IPC_SET_ARG1(call->data, arg1); |
391 | IPC_SET_ARG2(call->data, arg2); |
410 | IPC_SET_ARG2(call->data, arg2); |
392 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
411 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
393 | 412 | ||
394 | ipc_answer(&TASK->answerbox, call); |
413 | ipc_answer(&TASK->answerbox, call); |
395 | return 0; |
414 | return rc; |
396 | } |
415 | } |
397 | 416 | ||
398 | /** Send IPC answer */ |
417 | /** Send IPC answer */ |
399 | __native sys_ipc_answer(__native callid, ipc_data_t *data) |
418 | __native sys_ipc_answer(__native callid, ipc_data_t *data) |
400 | { |
419 | { |
401 | call_t *call; |
420 | call_t *call; |
402 | ipc_data_t saved_data; |
421 | ipc_data_t saved_data; |
403 | int saveddata = 0; |
422 | int saveddata = 0; |
404 | int rc; |
423 | int rc; |
405 | 424 | ||
406 | call = get_call(callid); |
425 | call = get_call(callid); |
407 | if (!call) |
426 | if (!call) |
408 | return ENOENT; |
427 | return ENOENT; |
409 | 428 | ||
410 | if (answer_need_old(call)) { |
429 | if (answer_need_old(call)) { |
411 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
430 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
412 | saveddata = 1; |
431 | saveddata = 1; |
413 | } |
432 | } |
414 | rc = copy_from_uspace(&call->data.args, &data->args, |
433 | rc = copy_from_uspace(&call->data.args, &data->args, |
415 | sizeof(call->data.args)); |
434 | sizeof(call->data.args)); |
416 | if (rc != 0) |
435 | if (rc != 0) |
417 | return rc; |
436 | return rc; |
418 | 437 | ||
419 | answer_preprocess(call, saveddata ? &saved_data : NULL); |
438 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
420 | 439 | ||
421 | ipc_answer(&TASK->answerbox, call); |
440 | ipc_answer(&TASK->answerbox, call); |
422 | 441 | ||
423 | return 0; |
442 | return rc; |
424 | } |
443 | } |
425 | 444 | ||
426 | /** Hang up the phone |
445 | /** Hang up the phone |
427 | * |
446 | * |
428 | */ |
447 | */ |
429 | __native sys_ipc_hangup(int phoneid) |
448 | __native sys_ipc_hangup(int phoneid) |
430 | { |
449 | { |
431 | phone_t *phone; |
450 | phone_t *phone; |
432 | 451 | ||
433 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
452 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
434 | 453 | ||
435 | if (ipc_phone_hangup(phone)) |
454 | if (ipc_phone_hangup(phone)) |
436 | return -1; |
455 | return -1; |
437 | 456 | ||
438 | return 0; |
457 | return 0; |
439 | } |
458 | } |
440 | 459 | ||
441 | /** Wait for incoming ipc call or answer |
460 | /** Wait for incoming ipc call or answer |
442 | * |
461 | * |
443 | * @param calldata Pointer to buffer where the call/answer data is stored |
462 | * @param calldata Pointer to buffer where the call/answer data is stored |
444 | * @param flags |
463 | * @param flags |
445 | * @return Callid, if callid & 1, then the call is answer |
464 | * @return Callid, if callid & 1, then the call is answer |
446 | */ |
465 | */ |
447 | __native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags) |
466 | __native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags) |
448 | { |
467 | { |
449 | call_t *call; |
468 | call_t *call; |
450 | 469 | ||
451 | restart: |
470 | restart: |
452 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
471 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
453 | if (!call) |
472 | if (!call) |
454 | return 0; |
473 | return 0; |
455 | 474 | ||
456 | if (call->flags & IPC_CALL_NOTIF) { |
475 | if (call->flags & IPC_CALL_NOTIF) { |
457 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
476 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
458 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
477 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
459 | ipc_call_free(call); |
478 | ipc_call_free(call); |
460 | 479 | ||
461 | return ((__native)call) | IPC_CALLID_NOTIFICATION; |
480 | return ((__native)call) | IPC_CALLID_NOTIFICATION; |
462 | } |
481 | } |
463 | 482 | ||
464 | if (call->flags & IPC_CALL_ANSWERED) { |
483 | if (call->flags & IPC_CALL_ANSWERED) { |
465 | process_answer(call); |
484 | process_answer(call); |
466 | 485 | ||
467 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
486 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
468 | 487 | ||
469 | atomic_dec(&TASK->active_calls); |
488 | atomic_dec(&TASK->active_calls); |
470 | 489 | ||
471 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
490 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
472 | ipc_call_free(call); |
491 | ipc_call_free(call); |
473 | goto restart; |
492 | goto restart; |
474 | } |
493 | } |
475 | 494 | ||
476 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
495 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
477 | ipc_call_free(call); |
496 | ipc_call_free(call); |
478 | 497 | ||
479 | return ((__native)call) | IPC_CALLID_ANSWERED; |
498 | return ((__native)call) | IPC_CALLID_ANSWERED; |
480 | } |
499 | } |
481 | 500 | ||
482 | if (process_request(&TASK->answerbox, call)) |
501 | if (process_request(&TASK->answerbox, call)) |
483 | goto restart; |
502 | goto restart; |
484 | 503 | ||
485 | /* Include phone address('id') of the caller in the request, |
504 | /* Include phone address('id') of the caller in the request, |
486 | * copy whole call->data, not only call->data.args */ |
505 | * copy whole call->data, not only call->data.args */ |
487 | STRUCT_TO_USPACE(calldata, &call->data); |
506 | STRUCT_TO_USPACE(calldata, &call->data); |
488 | return (__native)call; |
507 | return (__native)call; |
489 | } |
508 | } |
490 | 509 | ||
491 | /** Connect irq handler to task */ |
510 | /** Connect irq handler to task */ |
492 | __native sys_ipc_register_irq(__native irq, irq_code_t *ucode) |
511 | __native sys_ipc_register_irq(__native irq, irq_code_t *ucode) |
493 | { |
512 | { |
494 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
513 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
495 | return EPERM; |
514 | return EPERM; |
496 | 515 | ||
497 | if (irq >= IRQ_COUNT) |
516 | if (irq >= IRQ_COUNT) |
498 | return (__native) ELIMIT; |
517 | return (__native) ELIMIT; |
499 | 518 | ||
500 | irq_ipc_bind_arch(irq); |
519 | irq_ipc_bind_arch(irq); |
501 | 520 | ||
502 | return ipc_irq_register(&TASK->answerbox, irq, ucode); |
521 | return ipc_irq_register(&TASK->answerbox, irq, ucode); |
503 | } |
522 | } |
504 | 523 | ||
505 | /* Disconnect irq handler from task */ |
524 | /* Disconnect irq handler from task */ |
506 | __native sys_ipc_unregister_irq(__native irq) |
525 | __native sys_ipc_unregister_irq(__native irq) |
507 | { |
526 | { |
508 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
527 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
509 | return EPERM; |
528 | return EPERM; |
510 | 529 | ||
511 | if (irq >= IRQ_COUNT) |
530 | if (irq >= IRQ_COUNT) |
512 | return (__native) ELIMIT; |
531 | return (__native) ELIMIT; |
513 | 532 | ||
514 | ipc_irq_unregister(&TASK->answerbox, irq); |
533 | ipc_irq_unregister(&TASK->answerbox, irq); |
515 | 534 | ||
516 | return 0; |
535 | return 0; |
517 | } |
536 | } |
518 | 537 |