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