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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 | /** @addtogroup genericipc |
29 | /** @addtogroup genericipc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <proc/task.h> |
36 | #include <proc/task.h> |
37 | #include <proc/thread.h> |
37 | #include <proc/thread.h> |
38 | #include <errno.h> |
38 | #include <errno.h> |
39 | #include <memstr.h> |
39 | #include <memstr.h> |
40 | #include <debug.h> |
40 | #include <debug.h> |
41 | #include <ipc/ipc.h> |
41 | #include <ipc/ipc.h> |
42 | #include <ipc/sysipc.h> |
42 | #include <ipc/sysipc.h> |
43 | #include <ipc/irq.h> |
43 | #include <ipc/irq.h> |
44 | #include <ipc/ipcrsc.h> |
44 | #include <ipc/ipcrsc.h> |
45 | #include <ipc/kbox.h> |
45 | #include <ipc/kbox.h> |
46 | #include <udebug/udebug_ipc.h> |
46 | #include <udebug/udebug_ipc.h> |
47 | #include <arch/interrupt.h> |
47 | #include <arch/interrupt.h> |
48 | #include <syscall/copy.h> |
48 | #include <syscall/copy.h> |
49 | #include <security/cap.h> |
49 | #include <security/cap.h> |
50 | #include <mm/as.h> |
50 | #include <mm/as.h> |
51 | #include <print.h> |
51 | #include <print.h> |
52 | 52 | ||
53 | /** |
53 | /** |
54 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
54 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
55 | * requests. |
55 | * requests. |
56 | */ |
56 | */ |
57 | #define DATA_XFER_LIMIT (64 * 1024) |
57 | #define DATA_XFER_LIMIT (64 * 1024) |
58 | 58 | ||
59 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
59 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
60 | { \ |
60 | { \ |
61 | if (phoneid > IPC_MAX_PHONES) { \ |
61 | if (phoneid > IPC_MAX_PHONES) { \ |
62 | err; \ |
62 | err; \ |
63 | } \ |
63 | } \ |
64 | phone = &TASK->phones[phoneid]; \ |
64 | phone = &TASK->phones[phoneid]; \ |
65 | } |
65 | } |
66 | 66 | ||
67 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
67 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
68 | 68 | ||
69 | /** Decide if the method is a system method. |
69 | /** Decide if the method is a system method. |
70 | * |
70 | * |
71 | * @param method Method to be decided. |
71 | * @param method Method to be decided. |
72 | * |
72 | * |
73 | * @return Return 1 if the method is a system method. |
73 | * @return Return 1 if the method is a system method. |
74 | * Otherwise return 0. |
74 | * Otherwise return 0. |
75 | */ |
75 | */ |
76 | static inline int method_is_system(unative_t method) |
76 | static inline int method_is_system(unative_t method) |
77 | { |
77 | { |
78 | if (method <= IPC_M_LAST_SYSTEM) |
78 | if (method <= IPC_M_LAST_SYSTEM) |
79 | return 1; |
79 | return 1; |
80 | return 0; |
80 | return 0; |
81 | } |
81 | } |
82 | 82 | ||
83 | /** Decide if the message with this method is forwardable. |
83 | /** Decide if the message with this method is forwardable. |
84 | * |
84 | * |
85 | * - some system messages may be forwarded, for some of them |
85 | * - some system messages may be forwarded, for some of them |
86 | * it is useless |
86 | * it is useless |
87 | * |
87 | * |
88 | * @param method Method to be decided. |
88 | * @param method Method to be decided. |
89 | * |
89 | * |
90 | * @return Return 1 if the method is forwardable. |
90 | * @return Return 1 if the method is forwardable. |
91 | * Otherwise return 0. |
91 | * Otherwise return 0. |
92 | */ |
92 | */ |
93 | static inline int method_is_forwardable(unative_t method) |
93 | static inline int method_is_forwardable(unative_t method) |
94 | { |
94 | { |
95 | switch (method) { |
95 | switch (method) { |
96 | case IPC_M_PHONE_HUNGUP: |
96 | case IPC_M_PHONE_HUNGUP: |
97 | /* This message is meant only for the original recipient. */ |
97 | /* This message is meant only for the original recipient. */ |
98 | return 0; |
98 | return 0; |
99 | default: |
99 | default: |
100 | return 1; |
100 | return 1; |
101 | } |
101 | } |
102 | } |
102 | } |
103 | 103 | ||
104 | /** Decide if the message with this method is immutable on forward. |
104 | /** Decide if the message with this method is immutable on forward. |
105 | * |
105 | * |
106 | * - some system messages may be forwarded but their content cannot be altered |
106 | * - some system messages may be forwarded but their content cannot be altered |
107 | * |
107 | * |
108 | * @param method Method to be decided. |
108 | * @param method Method to be decided. |
109 | * |
109 | * |
110 | * @return Return 1 if the method is immutable on forward. |
110 | * @return Return 1 if the method is immutable on forward. |
111 | * Otherwise return 0. |
111 | * Otherwise return 0. |
112 | */ |
112 | */ |
113 | static inline int method_is_immutable(unative_t method) |
113 | static inline int method_is_immutable(unative_t method) |
114 | { |
114 | { |
115 | switch (method) { |
115 | switch (method) { |
116 | case IPC_M_SHARE_OUT: |
116 | case IPC_M_SHARE_OUT: |
117 | case IPC_M_SHARE_IN: |
117 | case IPC_M_SHARE_IN: |
118 | case IPC_M_DATA_WRITE: |
118 | case IPC_M_DATA_WRITE: |
119 | case IPC_M_DATA_READ: |
119 | case IPC_M_DATA_READ: |
120 | return 1; |
120 | return 1; |
121 | break; |
121 | break; |
122 | default: |
122 | default: |
123 | return 0; |
123 | return 0; |
124 | } |
124 | } |
125 | } |
125 | } |
126 | 126 | ||
127 | 127 | ||
128 | /*********************************************************************** |
128 | /*********************************************************************** |
129 | * Functions that preprocess answer before sending it to the recepient. |
129 | * Functions that preprocess answer before sending it to the recepient. |
130 | ***********************************************************************/ |
130 | ***********************************************************************/ |
131 | 131 | ||
132 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
132 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
133 | * for answer_preprocess(). |
133 | * for answer_preprocess(). |
134 | * |
134 | * |
135 | * @param call Call structure to be decided. |
135 | * @param call Call structure to be decided. |
136 | * |
136 | * |
137 | * @return Return 1 if the old call contents should be saved. |
137 | * @return Return 1 if the old call contents should be saved. |
138 | * Return 0 otherwise. |
138 | * Return 0 otherwise. |
139 | */ |
139 | */ |
140 | static inline int answer_need_old(call_t *call) |
140 | static inline int answer_need_old(call_t *call) |
141 | { |
141 | { |
142 | switch (IPC_GET_METHOD(call->data)) { |
142 | switch (IPC_GET_METHOD(call->data)) { |
143 | case IPC_M_CONNECT_TO_ME: |
143 | case IPC_M_CONNECT_TO_ME: |
144 | case IPC_M_CONNECT_ME_TO: |
144 | case IPC_M_CONNECT_ME_TO: |
145 | case IPC_M_SHARE_OUT: |
145 | case IPC_M_SHARE_OUT: |
146 | case IPC_M_SHARE_IN: |
146 | case IPC_M_SHARE_IN: |
147 | case IPC_M_DATA_WRITE: |
147 | case IPC_M_DATA_WRITE: |
148 | case IPC_M_DATA_READ: |
148 | case IPC_M_DATA_READ: |
149 | return 1; |
149 | return 1; |
150 | default: |
150 | default: |
151 | return 0; |
151 | return 0; |
152 | } |
152 | } |
153 | } |
153 | } |
154 | 154 | ||
155 | /** Interpret process answer as control information. |
155 | /** Interpret process answer as control information. |
156 | * |
156 | * |
157 | * This function is called directly after sys_ipc_answer(). |
157 | * This function is called directly after sys_ipc_answer(). |
158 | * |
158 | * |
159 | * @param answer Call structure with the answer. |
159 | * @param answer Call structure with the answer. |
160 | * @param olddata Saved data of the request. |
160 | * @param olddata Saved data of the request. |
161 | * |
161 | * |
162 | * @return Return 0 on success or an error code. |
162 | * @return Return 0 on success or an error code. |
163 | */ |
163 | */ |
164 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
164 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
165 | { |
165 | { |
166 | int phoneid; |
166 | int phoneid; |
167 | 167 | ||
168 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
168 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
169 | /* In case of forward, hangup the forwared phone, |
169 | /* In case of forward, hangup the forwared phone, |
170 | * not the originator |
170 | * not the originator |
171 | */ |
171 | */ |
172 | mutex_lock(&answer->data.phone->lock); |
172 | mutex_lock(&answer->data.phone->lock); |
173 | spinlock_lock(&TASK->answerbox.lock); |
173 | spinlock_lock(&TASK->answerbox.lock); |
174 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
174 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
175 | list_remove(&answer->data.phone->link); |
175 | list_remove(&answer->data.phone->link); |
176 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
176 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
177 | } |
177 | } |
178 | spinlock_unlock(&TASK->answerbox.lock); |
178 | spinlock_unlock(&TASK->answerbox.lock); |
179 | mutex_unlock(&answer->data.phone->lock); |
179 | mutex_unlock(&answer->data.phone->lock); |
180 | } |
180 | } |
181 | 181 | ||
182 | if (!olddata) |
182 | if (!olddata) |
183 | return 0; |
183 | return 0; |
184 | 184 | ||
185 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
185 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
186 | phoneid = IPC_GET_ARG5(*olddata); |
186 | phoneid = IPC_GET_ARG5(*olddata); |
187 | if (IPC_GET_RETVAL(answer->data)) { |
187 | if (IPC_GET_RETVAL(answer->data)) { |
188 | /* The connection was not accepted */ |
188 | /* The connection was not accepted */ |
189 | phone_dealloc(phoneid); |
189 | phone_dealloc(phoneid); |
190 | } else { |
190 | } else { |
191 | /* The connection was accepted */ |
191 | /* The connection was accepted */ |
192 | phone_connect(phoneid, &answer->sender->answerbox); |
192 | phone_connect(phoneid, &answer->sender->answerbox); |
193 | /* Set 'phone hash' as arg5 of response */ |
193 | /* Set 'phone hash' as arg5 of response */ |
194 | IPC_SET_ARG5(answer->data, |
194 | IPC_SET_ARG5(answer->data, |
195 | (unative_t) &TASK->phones[phoneid]); |
195 | (unative_t) &TASK->phones[phoneid]); |
196 | } |
196 | } |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
198 | /* If the users accepted call, connect */ |
198 | /* If the users accepted call, connect */ |
199 | if (!IPC_GET_RETVAL(answer->data)) { |
199 | if (!IPC_GET_RETVAL(answer->data)) { |
200 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
200 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
201 | &TASK->answerbox); |
201 | &TASK->answerbox); |
202 | } |
202 | } |
203 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
203 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
204 | if (!IPC_GET_RETVAL(answer->data)) { |
204 | if (!IPC_GET_RETVAL(answer->data)) { |
205 | /* Accepted, handle as_area receipt */ |
205 | /* Accepted, handle as_area receipt */ |
206 | ipl_t ipl; |
206 | ipl_t ipl; |
207 | int rc; |
207 | int rc; |
208 | as_t *as; |
208 | as_t *as; |
209 | 209 | ||
210 | ipl = interrupts_disable(); |
210 | ipl = interrupts_disable(); |
211 | spinlock_lock(&answer->sender->lock); |
211 | spinlock_lock(&answer->sender->lock); |
212 | as = answer->sender->as; |
212 | as = answer->sender->as; |
213 | spinlock_unlock(&answer->sender->lock); |
213 | spinlock_unlock(&answer->sender->lock); |
214 | interrupts_restore(ipl); |
214 | interrupts_restore(ipl); |
215 | 215 | ||
216 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
216 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
217 | IPC_GET_ARG2(*olddata), AS, |
217 | IPC_GET_ARG2(*olddata), AS, |
218 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
218 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
219 | IPC_SET_RETVAL(answer->data, rc); |
219 | IPC_SET_RETVAL(answer->data, rc); |
220 | return rc; |
220 | return rc; |
221 | } |
221 | } |
222 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
222 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
223 | if (!IPC_GET_RETVAL(answer->data)) { |
223 | if (!IPC_GET_RETVAL(answer->data)) { |
224 | ipl_t ipl; |
224 | ipl_t ipl; |
225 | as_t *as; |
225 | as_t *as; |
226 | int rc; |
226 | int rc; |
227 | 227 | ||
228 | ipl = interrupts_disable(); |
228 | ipl = interrupts_disable(); |
229 | spinlock_lock(&answer->sender->lock); |
229 | spinlock_lock(&answer->sender->lock); |
230 | as = answer->sender->as; |
230 | as = answer->sender->as; |
231 | spinlock_unlock(&answer->sender->lock); |
231 | spinlock_unlock(&answer->sender->lock); |
232 | interrupts_restore(ipl); |
232 | interrupts_restore(ipl); |
233 | 233 | ||
234 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
234 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
235 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
235 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
236 | IPC_GET_ARG2(answer->data)); |
236 | IPC_GET_ARG2(answer->data)); |
237 | IPC_SET_RETVAL(answer->data, rc); |
237 | IPC_SET_RETVAL(answer->data, rc); |
238 | } |
238 | } |
239 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
239 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
240 | ASSERT(!answer->buffer); |
240 | ASSERT(!answer->buffer); |
241 | if (!IPC_GET_RETVAL(answer->data)) { |
241 | if (!IPC_GET_RETVAL(answer->data)) { |
242 | /* The recipient agreed to send data. */ |
242 | /* The recipient agreed to send data. */ |
243 | uintptr_t src = IPC_GET_ARG1(answer->data); |
243 | uintptr_t src = IPC_GET_ARG1(answer->data); |
244 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
244 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
245 | size_t max_size = IPC_GET_ARG2(*olddata); |
245 | size_t max_size = IPC_GET_ARG2(*olddata); |
246 | size_t size = IPC_GET_ARG2(answer->data); |
246 | size_t size = IPC_GET_ARG2(answer->data); |
247 | if (size && size <= max_size) { |
247 | if (size && size <= max_size) { |
248 | /* |
248 | /* |
249 | * Copy the destination VA so that this piece of |
249 | * Copy the destination VA so that this piece of |
250 | * information is not lost. |
250 | * information is not lost. |
251 | */ |
251 | */ |
252 | IPC_SET_ARG1(answer->data, dst); |
252 | IPC_SET_ARG1(answer->data, dst); |
253 | 253 | ||
254 | answer->buffer = malloc(size, 0); |
254 | answer->buffer = malloc(size, 0); |
255 | int rc = copy_from_uspace(answer->buffer, |
255 | int rc = copy_from_uspace(answer->buffer, |
256 | (void *) src, size); |
256 | (void *) src, size); |
257 | if (rc) { |
257 | if (rc) { |
258 | IPC_SET_RETVAL(answer->data, rc); |
258 | IPC_SET_RETVAL(answer->data, rc); |
259 | free(answer->buffer); |
259 | free(answer->buffer); |
260 | answer->buffer = NULL; |
260 | answer->buffer = NULL; |
261 | } |
261 | } |
262 | } else if (!size) { |
262 | } else if (!size) { |
263 | IPC_SET_RETVAL(answer->data, EOK); |
263 | IPC_SET_RETVAL(answer->data, EOK); |
264 | } else { |
264 | } else { |
265 | IPC_SET_RETVAL(answer->data, ELIMIT); |
265 | IPC_SET_RETVAL(answer->data, ELIMIT); |
266 | } |
266 | } |
267 | } |
267 | } |
268 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
268 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
269 | ASSERT(answer->buffer); |
269 | ASSERT(answer->buffer); |
270 | if (!IPC_GET_RETVAL(answer->data)) { |
270 | if (!IPC_GET_RETVAL(answer->data)) { |
271 | /* The recipient agreed to receive data. */ |
271 | /* The recipient agreed to receive data. */ |
272 | int rc; |
272 | int rc; |
273 | uintptr_t dst; |
273 | uintptr_t dst; |
274 | size_t size; |
274 | size_t size; |
275 | size_t max_size; |
275 | size_t max_size; |
276 | 276 | ||
277 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
277 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
278 | size = (size_t)IPC_GET_ARG2(answer->data); |
278 | size = (size_t)IPC_GET_ARG2(answer->data); |
279 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
279 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
280 | 280 | ||
281 | if (size <= max_size) { |
281 | if (size <= max_size) { |
282 | rc = copy_to_uspace((void *) dst, |
282 | rc = copy_to_uspace((void *) dst, |
283 | answer->buffer, size); |
283 | answer->buffer, size); |
284 | if (rc) |
284 | if (rc) |
285 | IPC_SET_RETVAL(answer->data, rc); |
285 | IPC_SET_RETVAL(answer->data, rc); |
286 | } else { |
286 | } else { |
287 | IPC_SET_RETVAL(answer->data, ELIMIT); |
287 | IPC_SET_RETVAL(answer->data, ELIMIT); |
288 | } |
288 | } |
289 | } |
289 | } |
290 | free(answer->buffer); |
290 | free(answer->buffer); |
291 | answer->buffer = NULL; |
291 | answer->buffer = NULL; |
292 | } |
292 | } |
293 | return 0; |
293 | return 0; |
294 | } |
294 | } |
295 | 295 | ||
296 | /** Called before the request is sent. |
296 | /** Called before the request is sent. |
297 | * |
297 | * |
298 | * @param call Call structure with the request. |
298 | * @param call Call structure with the request. |
299 | * @param phone Phone that the call will be sent through. |
299 | * @param phone Phone that the call will be sent through. |
300 | * |
300 | * |
301 | * @return Return 0 on success, ELIMIT or EPERM on error. |
301 | * @return Return 0 on success, ELIMIT or EPERM on error. |
302 | */ |
302 | */ |
303 | static int request_preprocess(call_t *call, phone_t *phone) |
303 | static int request_preprocess(call_t *call, phone_t *phone) |
304 | { |
304 | { |
305 | int newphid; |
305 | int newphid; |
306 | size_t size; |
306 | size_t size; |
307 | uintptr_t src; |
307 | uintptr_t src; |
308 | int rc; |
308 | int rc; |
309 | 309 | ||
310 | switch (IPC_GET_METHOD(call->data)) { |
310 | switch (IPC_GET_METHOD(call->data)) { |
311 | case IPC_M_CONNECT_ME_TO: |
311 | case IPC_M_CONNECT_ME_TO: |
312 | newphid = phone_alloc(); |
312 | newphid = phone_alloc(); |
313 | if (newphid < 0) |
313 | if (newphid < 0) |
314 | return ELIMIT; |
314 | return ELIMIT; |
315 | /* Set arg5 for server */ |
315 | /* Set arg5 for server */ |
316 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
316 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
317 | call->flags |= IPC_CALL_CONN_ME_TO; |
317 | call->flags |= IPC_CALL_CONN_ME_TO; |
318 | call->priv = newphid; |
318 | call->priv = newphid; |
319 | break; |
319 | break; |
320 | case IPC_M_SHARE_OUT: |
320 | case IPC_M_SHARE_OUT: |
321 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
321 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
322 | if (!size) |
322 | if (!size) |
323 | return EPERM; |
323 | return EPERM; |
324 | IPC_SET_ARG2(call->data, size); |
324 | IPC_SET_ARG2(call->data, size); |
325 | break; |
325 | break; |
326 | case IPC_M_DATA_READ: |
326 | case IPC_M_DATA_READ: |
327 | size = IPC_GET_ARG2(call->data); |
327 | size = IPC_GET_ARG2(call->data); |
328 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
328 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
329 | return ELIMIT; |
329 | return ELIMIT; |
330 | break; |
330 | break; |
331 | case IPC_M_DATA_WRITE: |
331 | case IPC_M_DATA_WRITE: |
332 | src = IPC_GET_ARG1(call->data); |
332 | src = IPC_GET_ARG1(call->data); |
333 | size = IPC_GET_ARG2(call->data); |
333 | size = IPC_GET_ARG2(call->data); |
334 | 334 | ||
335 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
335 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
336 | return ELIMIT; |
336 | return ELIMIT; |
337 | 337 | ||
338 | call->buffer = (uint8_t *) malloc(size, 0); |
338 | call->buffer = (uint8_t *) malloc(size, 0); |
339 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
339 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
340 | if (rc != 0) { |
340 | if (rc != 0) { |
341 | free(call->buffer); |
341 | free(call->buffer); |
342 | return rc; |
342 | return rc; |
343 | } |
343 | } |
344 | break; |
344 | break; |
345 | #ifdef CONFIG_UDEBUG |
345 | #ifdef CONFIG_UDEBUG |
346 | case IPC_M_DEBUG_ALL: |
346 | case IPC_M_DEBUG_ALL: |
347 | return udebug_request_preprocess(call, phone); |
347 | return udebug_request_preprocess(call, phone); |
348 | #endif |
348 | #endif |
349 | default: |
349 | default: |
350 | break; |
350 | break; |
351 | } |
351 | } |
352 | return 0; |
352 | return 0; |
353 | } |
353 | } |
354 | 354 | ||
355 | /******************************************************************************* |
355 | /******************************************************************************* |
356 | * Functions called to process received call/answer before passing it to uspace. |
356 | * Functions called to process received call/answer before passing it to uspace. |
357 | *******************************************************************************/ |
357 | *******************************************************************************/ |
358 | 358 | ||
359 | /** Do basic kernel processing of received call answer. |
359 | /** Do basic kernel processing of received call answer. |
360 | * |
360 | * |
361 | * @param call Call structure with the answer. |
361 | * @param call Call structure with the answer. |
362 | */ |
362 | */ |
363 | static void process_answer(call_t *call) |
363 | static void process_answer(call_t *call) |
364 | { |
364 | { |
365 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
365 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
366 | (call->flags & IPC_CALL_FORWARDED)) |
366 | (call->flags & IPC_CALL_FORWARDED)) |
367 | IPC_SET_RETVAL(call->data, EFORWARD); |
367 | IPC_SET_RETVAL(call->data, EFORWARD); |
368 | 368 | ||
369 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
369 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
370 | if (IPC_GET_RETVAL(call->data)) |
370 | if (IPC_GET_RETVAL(call->data)) |
371 | phone_dealloc(call->priv); |
371 | phone_dealloc(call->priv); |
372 | else |
372 | else |
373 | IPC_SET_ARG5(call->data, call->priv); |
373 | IPC_SET_ARG5(call->data, call->priv); |
374 | } |
374 | } |
375 | 375 | ||
376 | if (call->buffer) { |
376 | if (call->buffer) { |
377 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
377 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
378 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
378 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
379 | uintptr_t dst = IPC_GET_ARG1(call->data); |
379 | uintptr_t dst = IPC_GET_ARG1(call->data); |
380 | size_t size = IPC_GET_ARG2(call->data); |
380 | size_t size = IPC_GET_ARG2(call->data); |
381 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
381 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
382 | if (rc) |
382 | if (rc) |
383 | IPC_SET_RETVAL(call->data, rc); |
383 | IPC_SET_RETVAL(call->data, rc); |
384 | free(call->buffer); |
384 | free(call->buffer); |
385 | call->buffer = NULL; |
385 | call->buffer = NULL; |
386 | } |
386 | } |
387 | } |
387 | } |
388 | 388 | ||
389 | /** Do basic kernel processing of received call request. |
389 | /** Do basic kernel processing of received call request. |
390 | * |
390 | * |
391 | * @param box Destination answerbox structure. |
391 | * @param box Destination answerbox structure. |
392 | * @param call Call structure with the request. |
392 | * @param call Call structure with the request. |
393 | * |
393 | * |
394 | * @return Return 0 if the call should be passed to userspace. |
394 | * @return Return 0 if the call should be passed to userspace. |
395 | * Return -1 if the call should be ignored. |
395 | * Return -1 if the call should be ignored. |
396 | */ |
396 | */ |
397 | static int process_request(answerbox_t *box, call_t *call) |
397 | static int process_request(answerbox_t *box, call_t *call) |
398 | { |
398 | { |
399 | int phoneid; |
399 | int phoneid; |
400 | 400 | ||
401 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
401 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
402 | phoneid = phone_alloc(); |
402 | phoneid = phone_alloc(); |
403 | if (phoneid < 0) { /* Failed to allocate phone */ |
403 | if (phoneid < 0) { /* Failed to allocate phone */ |
404 | IPC_SET_RETVAL(call->data, ELIMIT); |
404 | IPC_SET_RETVAL(call->data, ELIMIT); |
405 | ipc_answer(box, call); |
405 | ipc_answer(box, call); |
406 | return -1; |
406 | return -1; |
407 | } |
407 | } |
408 | IPC_SET_ARG5(call->data, phoneid); |
408 | IPC_SET_ARG5(call->data, phoneid); |
409 | } |
409 | } |
410 | switch (IPC_GET_METHOD(call->data)) { |
410 | switch (IPC_GET_METHOD(call->data)) { |
411 | case IPC_M_DEBUG_ALL: |
411 | case IPC_M_DEBUG_ALL: |
412 | return -1; |
412 | return -1; |
413 | default: |
413 | default: |
414 | break; |
414 | break; |
415 | } |
415 | } |
416 | return 0; |
416 | return 0; |
417 | } |
417 | } |
418 | 418 | ||
419 | /** Make a fast call over IPC, wait for reply and return to user. |
419 | /** Make a fast call over IPC, wait for reply and return to user. |
420 | * |
420 | * |
421 | * This function can handle only three arguments of payload, but is faster than |
421 | * This function can handle only three arguments of payload, but is faster than |
422 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
422 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
423 | * |
423 | * |
424 | * @param phoneid Phone handle for the call. |
424 | * @param phoneid Phone handle for the call. |
425 | * @param method Method of the call. |
425 | * @param method Method of the call. |
426 | * @param arg1 Service-defined payload argument. |
426 | * @param arg1 Service-defined payload argument. |
427 | * @param arg2 Service-defined payload argument. |
427 | * @param arg2 Service-defined payload argument. |
428 | * @param arg3 Service-defined payload argument. |
428 | * @param arg3 Service-defined payload argument. |
429 | * @param data Address of userspace structure where the reply call will |
429 | * @param data Address of userspace structure where the reply call will |
430 | * be stored. |
430 | * be stored. |
431 | * |
431 | * |
432 | * @return Returns 0 on success. |
432 | * @return Returns 0 on success. |
433 | * Return ENOENT if there is no such phone handle. |
433 | * Return ENOENT if there is no such phone handle. |
434 | */ |
434 | */ |
435 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
435 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
436 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
436 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
437 | { |
437 | { |
438 | call_t call; |
438 | call_t call; |
439 | phone_t *phone; |
439 | phone_t *phone; |
440 | int res; |
440 | int res; |
441 | int rc; |
441 | int rc; |
442 | 442 | ||
443 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
443 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
444 | 444 | ||
445 | ipc_call_static_init(&call); |
445 | ipc_call_static_init(&call); |
446 | IPC_SET_METHOD(call.data, method); |
446 | IPC_SET_METHOD(call.data, method); |
447 | IPC_SET_ARG1(call.data, arg1); |
447 | IPC_SET_ARG1(call.data, arg1); |
448 | IPC_SET_ARG2(call.data, arg2); |
448 | IPC_SET_ARG2(call.data, arg2); |
449 | IPC_SET_ARG3(call.data, arg3); |
449 | IPC_SET_ARG3(call.data, arg3); |
450 | /* |
450 | /* |
451 | * To achieve deterministic behavior, zero out arguments that are beyond |
451 | * To achieve deterministic behavior, zero out arguments that are beyond |
452 | * the limits of the fast version. |
452 | * the limits of the fast version. |
453 | */ |
453 | */ |
454 | IPC_SET_ARG4(call.data, 0); |
454 | IPC_SET_ARG4(call.data, 0); |
455 | IPC_SET_ARG5(call.data, 0); |
455 | IPC_SET_ARG5(call.data, 0); |
456 | 456 | ||
457 | if (!(res = request_preprocess(&call, phone))) { |
457 | if (!(res = request_preprocess(&call, phone))) { |
458 | #ifdef CONFIG_UDEBUG |
458 | #ifdef CONFIG_UDEBUG |
459 | udebug_stoppable_begin(); |
459 | udebug_stoppable_begin(); |
460 | #endif |
460 | #endif |
461 | rc = ipc_call_sync(phone, &call); |
461 | rc = ipc_call_sync(phone, &call); |
462 | #ifdef CONFIG_UDEBUG |
462 | #ifdef CONFIG_UDEBUG |
463 | udebug_stoppable_end(); |
463 | udebug_stoppable_end(); |
464 | #endif |
464 | #endif |
465 | if (rc != EOK) |
465 | if (rc != EOK) |
466 | return rc; |
466 | return rc; |
467 | process_answer(&call); |
467 | process_answer(&call); |
468 | 468 | ||
469 | } else { |
469 | } else { |
470 | IPC_SET_RETVAL(call.data, res); |
470 | IPC_SET_RETVAL(call.data, res); |
471 | } |
471 | } |
472 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
472 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
473 | if (rc != 0) |
473 | if (rc != 0) |
474 | return rc; |
474 | return rc; |
475 | 475 | ||
476 | return 0; |
476 | return 0; |
477 | } |
477 | } |
478 | 478 | ||
479 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
479 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
480 | * |
480 | * |
481 | * @param phoneid Phone handle for the call. |
481 | * @param phoneid Phone handle for the call. |
482 | * @param question Userspace address of call data with the request. |
482 | * @param question Userspace address of call data with the request. |
483 | * @param reply Userspace address of call data where to store the |
483 | * @param reply Userspace address of call data where to store the |
484 | * answer. |
484 | * answer. |
485 | * |
485 | * |
486 | * @return Zero on success or an error code. |
486 | * @return Zero on success or an error code. |
487 | */ |
487 | */ |
488 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
488 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
489 | ipc_data_t *reply) |
489 | ipc_data_t *reply) |
490 | { |
490 | { |
491 | call_t call; |
491 | call_t call; |
492 | phone_t *phone; |
492 | phone_t *phone; |
493 | int res; |
493 | int res; |
494 | int rc; |
494 | int rc; |
495 | 495 | ||
496 | ipc_call_static_init(&call); |
496 | ipc_call_static_init(&call); |
497 | rc = copy_from_uspace(&call.data.args, &question->args, |
497 | rc = copy_from_uspace(&call.data.args, &question->args, |
498 | sizeof(call.data.args)); |
498 | sizeof(call.data.args)); |
499 | if (rc != 0) |
499 | if (rc != 0) |
500 | return (unative_t) rc; |
500 | return (unative_t) rc; |
501 | 501 | ||
502 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
502 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
503 | 503 | ||
504 | if (!(res = request_preprocess(&call, phone))) { |
504 | if (!(res = request_preprocess(&call, phone))) { |
505 | #ifdef CONFIG_UDEBUG |
505 | #ifdef CONFIG_UDEBUG |
506 | udebug_stoppable_begin(); |
506 | udebug_stoppable_begin(); |
507 | #endif |
507 | #endif |
508 | rc = ipc_call_sync(phone, &call); |
508 | rc = ipc_call_sync(phone, &call); |
509 | #ifdef CONFIG_UDEBUG |
509 | #ifdef CONFIG_UDEBUG |
510 | udebug_stoppable_end(); |
510 | udebug_stoppable_end(); |
511 | #endif |
511 | #endif |
512 | if (rc != EOK) |
512 | if (rc != EOK) |
513 | return rc; |
513 | return rc; |
514 | process_answer(&call); |
514 | process_answer(&call); |
515 | } else |
515 | } else |
516 | IPC_SET_RETVAL(call.data, res); |
516 | IPC_SET_RETVAL(call.data, res); |
517 | 517 | ||
518 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
518 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
519 | if (rc != 0) |
519 | if (rc != 0) |
520 | return rc; |
520 | return rc; |
521 | 521 | ||
522 | return 0; |
522 | return 0; |
523 | } |
523 | } |
524 | 524 | ||
525 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
525 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
526 | * |
526 | * |
527 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
527 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
528 | */ |
528 | */ |
529 | static int check_call_limit(void) |
529 | static int check_call_limit(void) |
530 | { |
530 | { |
531 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
531 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
532 | atomic_dec(&TASK->active_calls); |
532 | atomic_dec(&TASK->active_calls); |
533 | return -1; |
533 | return -1; |
534 | } |
534 | } |
535 | return 0; |
535 | return 0; |
536 | } |
536 | } |
537 | 537 | ||
538 | /** Make a fast asynchronous call over IPC. |
538 | /** Make a fast asynchronous call over IPC. |
539 | * |
539 | * |
540 | * This function can only handle four arguments of payload, but is faster than |
540 | * This function can only handle four arguments of payload, but is faster than |
541 | * the generic function sys_ipc_call_async_slow(). |
541 | * the generic function sys_ipc_call_async_slow(). |
542 | * |
542 | * |
543 | * @param phoneid Phone handle for the call. |
543 | * @param phoneid Phone handle for the call. |
544 | * @param method Method of the call. |
544 | * @param method Method of the call. |
545 | * @param arg1 Service-defined payload argument. |
545 | * @param arg1 Service-defined payload argument. |
546 | * @param arg2 Service-defined payload argument. |
546 | * @param arg2 Service-defined payload argument. |
547 | * @param arg3 Service-defined payload argument. |
547 | * @param arg3 Service-defined payload argument. |
548 | * @param arg4 Service-defined payload argument. |
548 | * @param arg4 Service-defined payload argument. |
549 | * |
549 | * |
550 | * @return Return call hash on success. |
550 | * @return Return call hash on success. |
551 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
551 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
552 | * IPC_CALLRET_TEMPORARY if there are too many pending |
552 | * IPC_CALLRET_TEMPORARY if there are too many pending |
553 | * asynchronous requests; answers should be handled first. |
553 | * asynchronous requests; answers should be handled first. |
554 | */ |
554 | */ |
555 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
555 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
556 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
556 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
557 | { |
557 | { |
558 | call_t *call; |
558 | call_t *call; |
559 | phone_t *phone; |
559 | phone_t *phone; |
560 | int res; |
560 | int res; |
561 | 561 | ||
562 | if (check_call_limit()) |
562 | if (check_call_limit()) |
563 | return IPC_CALLRET_TEMPORARY; |
563 | return IPC_CALLRET_TEMPORARY; |
564 | 564 | ||
565 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
565 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
566 | 566 | ||
567 | call = ipc_call_alloc(0); |
567 | call = ipc_call_alloc(0); |
568 | IPC_SET_METHOD(call->data, method); |
568 | IPC_SET_METHOD(call->data, method); |
569 | IPC_SET_ARG1(call->data, arg1); |
569 | IPC_SET_ARG1(call->data, arg1); |
570 | IPC_SET_ARG2(call->data, arg2); |
570 | IPC_SET_ARG2(call->data, arg2); |
571 | IPC_SET_ARG3(call->data, arg3); |
571 | IPC_SET_ARG3(call->data, arg3); |
572 | IPC_SET_ARG4(call->data, arg4); |
572 | IPC_SET_ARG4(call->data, arg4); |
573 | /* |
573 | /* |
574 | * To achieve deterministic behavior, zero out arguments that are beyond |
574 | * To achieve deterministic behavior, zero out arguments that are beyond |
575 | * the limits of the fast version. |
575 | * the limits of the fast version. |
576 | */ |
576 | */ |
577 | IPC_SET_ARG5(call->data, 0); |
577 | IPC_SET_ARG5(call->data, 0); |
578 | 578 | ||
579 | if (!(res = request_preprocess(call, phone))) |
579 | if (!(res = request_preprocess(call, phone))) |
580 | ipc_call(phone, call); |
580 | ipc_call(phone, call); |
581 | else |
581 | else |
582 | ipc_backsend_err(phone, call, res); |
582 | ipc_backsend_err(phone, call, res); |
583 | 583 | ||
584 | return (unative_t) call; |
584 | return (unative_t) call; |
585 | } |
585 | } |
586 | 586 | ||
587 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
587 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
588 | * |
588 | * |
589 | * @param phoneid Phone handle for the call. |
589 | * @param phoneid Phone handle for the call. |
590 | * @param data Userspace address of call data with the request. |
590 | * @param data Userspace address of call data with the request. |
591 | * |
591 | * |
592 | * @return See sys_ipc_call_async_fast(). |
592 | * @return See sys_ipc_call_async_fast(). |
593 | */ |
593 | */ |
594 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
594 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
595 | { |
595 | { |
596 | call_t *call; |
596 | call_t *call; |
597 | phone_t *phone; |
597 | phone_t *phone; |
598 | int res; |
598 | int res; |
599 | int rc; |
599 | int rc; |
600 | 600 | ||
601 | if (check_call_limit()) |
601 | if (check_call_limit()) |
602 | return IPC_CALLRET_TEMPORARY; |
602 | return IPC_CALLRET_TEMPORARY; |
603 | 603 | ||
604 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
604 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
605 | 605 | ||
606 | call = ipc_call_alloc(0); |
606 | call = ipc_call_alloc(0); |
607 | rc = copy_from_uspace(&call->data.args, &data->args, |
607 | rc = copy_from_uspace(&call->data.args, &data->args, |
608 | sizeof(call->data.args)); |
608 | sizeof(call->data.args)); |
609 | if (rc != 0) { |
609 | if (rc != 0) { |
610 | ipc_call_free(call); |
610 | ipc_call_free(call); |
611 | return (unative_t) rc; |
611 | return (unative_t) rc; |
612 | } |
612 | } |
613 | if (!(res = request_preprocess(call, phone))) |
613 | if (!(res = request_preprocess(call, phone))) |
614 | ipc_call(phone, call); |
614 | ipc_call(phone, call); |
615 | else |
615 | else |
616 | ipc_backsend_err(phone, call, res); |
616 | ipc_backsend_err(phone, call, res); |
617 | 617 | ||
618 | return (unative_t) call; |
618 | return (unative_t) call; |
619 | } |
619 | } |
620 | 620 | ||
621 | /** Forward a received call to another destination - common code for both the |
621 | /** Forward a received call to another destination - common code for both the |
622 | * fast and the slow version. |
622 | * fast and the slow version. |
623 | * |
623 | * |
624 | * @param callid Hash of the call to forward. |
624 | * @param callid Hash of the call to forward. |
625 | * @param phoneid Phone handle to use for forwarding. |
625 | * @param phoneid Phone handle to use for forwarding. |
626 | * @param method New method to use for the forwarded call. |
626 | * @param method New method to use for the forwarded call. |
627 | * @param arg1 New value of the first argument for the forwarded call. |
627 | * @param arg1 New value of the first argument for the forwarded call. |
628 | * @param arg2 New value of the second argument for the forwarded call. |
628 | * @param arg2 New value of the second argument for the forwarded call. |
629 | * @param arg3 New value of the third argument for the forwarded call. |
629 | * @param arg3 New value of the third argument for the forwarded call. |
630 | * @param arg4 New value of the fourth argument for the forwarded call. |
630 | * @param arg4 New value of the fourth argument for the forwarded call. |
631 | * @param arg5 New value of the fifth argument for the forwarded call. |
631 | * @param arg5 New value of the fifth argument for the forwarded call. |
632 | * @param mode Flags that specify mode of the forward operation. |
632 | * @param mode Flags that specify mode of the forward operation. |
633 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
633 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
634 | * the function considers only the fast version arguments: |
634 | * the function considers only the fast version arguments: |
635 | * i.e. arg1 and arg2. |
635 | * i.e. arg1 and arg2. |
636 | * |
636 | * |
637 | * @return Return 0 on succes, otherwise return an error code. |
637 | * @return Return 0 on succes, otherwise return an error code. |
638 | * |
638 | * |
639 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
639 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
640 | */ |
640 | */ |
641 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
641 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
642 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
642 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
643 | unative_t arg4, unative_t arg5, int mode, bool slow) |
643 | unative_t arg4, unative_t arg5, int mode, bool slow) |
644 | { |
644 | { |
645 | call_t *call; |
645 | call_t *call; |
646 | phone_t *phone; |
646 | phone_t *phone; |
647 | 647 | ||
648 | call = get_call(callid); |
648 | call = get_call(callid); |
649 | if (!call) |
649 | if (!call) |
650 | return ENOENT; |
650 | return ENOENT; |
651 | 651 | ||
652 | call->flags |= IPC_CALL_FORWARDED; |
652 | call->flags |= IPC_CALL_FORWARDED; |
653 | 653 | ||
654 | GET_CHECK_PHONE(phone, phoneid, { |
654 | GET_CHECK_PHONE(phone, phoneid, { |
655 | IPC_SET_RETVAL(call->data, EFORWARD); |
655 | IPC_SET_RETVAL(call->data, EFORWARD); |
656 | ipc_answer(&TASK->answerbox, call); |
656 | ipc_answer(&TASK->answerbox, call); |
657 | return ENOENT; |
657 | return ENOENT; |
658 | }); |
658 | }); |
659 | 659 | ||
660 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
660 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
661 | IPC_SET_RETVAL(call->data, EFORWARD); |
661 | IPC_SET_RETVAL(call->data, EFORWARD); |
662 | ipc_answer(&TASK->answerbox, call); |
662 | ipc_answer(&TASK->answerbox, call); |
663 | return EPERM; |
663 | return EPERM; |
664 | } |
664 | } |
665 | 665 | ||
666 | /* |
666 | /* |
667 | * Userspace is not allowed to change method of system methods on |
667 | * Userspace is not allowed to change method of system methods on |
668 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
668 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
669 | * arg1, arg2 and arg3. |
669 | * arg1, arg2 and arg3. |
670 | * If the method is immutable, don't change anything. |
670 | * If the method is immutable, don't change anything. |
671 | */ |
671 | */ |
672 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
672 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
673 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
673 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
674 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
674 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
675 | phone_dealloc(IPC_GET_ARG5(call->data)); |
675 | phone_dealloc(IPC_GET_ARG5(call->data)); |
676 | 676 | ||
677 | IPC_SET_ARG1(call->data, method); |
677 | IPC_SET_ARG1(call->data, method); |
678 | IPC_SET_ARG2(call->data, arg1); |
678 | IPC_SET_ARG2(call->data, arg1); |
679 | IPC_SET_ARG3(call->data, arg2); |
679 | IPC_SET_ARG3(call->data, arg2); |
680 | if (slow) { |
680 | if (slow) { |
681 | IPC_SET_ARG4(call->data, arg3); |
681 | IPC_SET_ARG4(call->data, arg3); |
682 | /* |
682 | /* |
683 | * For system methods we deliberately don't |
683 | * For system methods we deliberately don't |
684 | * overwrite ARG5. |
684 | * overwrite ARG5. |
685 | */ |
685 | */ |
686 | } |
686 | } |
687 | } else { |
687 | } else { |
688 | IPC_SET_METHOD(call->data, method); |
688 | IPC_SET_METHOD(call->data, method); |
689 | IPC_SET_ARG1(call->data, arg1); |
689 | IPC_SET_ARG1(call->data, arg1); |
690 | IPC_SET_ARG2(call->data, arg2); |
690 | IPC_SET_ARG2(call->data, arg2); |
691 | if (slow) { |
691 | if (slow) { |
692 | IPC_SET_ARG3(call->data, arg3); |
692 | IPC_SET_ARG3(call->data, arg3); |
693 | IPC_SET_ARG4(call->data, arg4); |
693 | IPC_SET_ARG4(call->data, arg4); |
694 | IPC_SET_ARG5(call->data, arg5); |
694 | IPC_SET_ARG5(call->data, arg5); |
695 | } |
695 | } |
696 | } |
696 | } |
697 | } |
697 | } |
698 | 698 | ||
699 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
699 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
700 | } |
700 | } |
701 | 701 | ||
702 | /** Forward a received call to another destination - fast version. |
702 | /** Forward a received call to another destination - fast version. |
703 | * |
703 | * |
704 | * @param callid Hash of the call to forward. |
704 | * @param callid Hash of the call to forward. |
705 | * @param phoneid Phone handle to use for forwarding. |
705 | * @param phoneid Phone handle to use for forwarding. |
706 | * @param method New method to use for the forwarded call. |
706 | * @param method New method to use for the forwarded call. |
707 | * @param arg1 New value of the first argument for the forwarded call. |
707 | * @param arg1 New value of the first argument for the forwarded call. |
708 | * @param arg2 New value of the second argument for the forwarded call. |
708 | * @param arg2 New value of the second argument for the forwarded call. |
709 | * @param mode Flags that specify mode of the forward operation. |
709 | * @param mode Flags that specify mode of the forward operation. |
710 | * |
710 | * |
711 | * @return Return 0 on succes, otherwise return an error code. |
711 | * @return Return 0 on succes, otherwise return an error code. |
712 | * |
712 | * |
713 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
713 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
714 | * overwritten in the forwarded message with the new method and the new |
714 | * overwritten in the forwarded message with the new method and the new |
715 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
715 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
716 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
716 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
717 | * is a set of immutable methods, for which the new method and arguments are not |
717 | * is a set of immutable methods, for which the new method and arguments are not |
718 | * set and these values are ignored. |
718 | * set and these values are ignored. |
719 | */ |
719 | */ |
720 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
720 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
721 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
721 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
722 | { |
722 | { |
723 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
723 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
724 | 0, mode, false); |
724 | 0, mode, false); |
725 | } |
725 | } |
726 | 726 | ||
727 | /** Forward a received call to another destination - slow version. |
727 | /** Forward a received call to another destination - slow version. |
728 | * |
728 | * |
729 | * @param callid Hash of the call to forward. |
729 | * @param callid Hash of the call to forward. |
730 | * @param phoneid Phone handle to use for forwarding. |
730 | * @param phoneid Phone handle to use for forwarding. |
731 | * @param data Userspace address of the new IPC data. |
731 | * @param data Userspace address of the new IPC data. |
732 | * @param mode Flags that specify mode of the forward operation. |
732 | * @param mode Flags that specify mode of the forward operation. |
733 | * |
733 | * |
734 | * @return Return 0 on succes, otherwise return an error code. |
734 | * @return Return 0 on succes, otherwise return an error code. |
735 | * |
735 | * |
736 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
736 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
737 | * It can copy all five new arguments and the new method from the userspace. |
737 | * It can copy all five new arguments and the new method from the userspace. |
738 | * It naturally extends the functionality of the fast version. For system |
738 | * It naturally extends the functionality of the fast version. For system |
739 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
739 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
740 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
740 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
741 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
741 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
742 | */ |
742 | */ |
743 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
743 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
744 | ipc_data_t *data, int mode) |
744 | ipc_data_t *data, int mode) |
745 | { |
745 | { |
746 | ipc_data_t newdata; |
746 | ipc_data_t newdata; |
747 | int rc; |
747 | int rc; |
748 | 748 | ||
749 | rc = copy_from_uspace(&newdata.args, &data->args, |
749 | rc = copy_from_uspace(&newdata.args, &data->args, |
750 | sizeof(newdata.args)); |
750 | sizeof(newdata.args)); |
751 | if (rc != 0) |
751 | if (rc != 0) |
752 | return (unative_t) rc; |
752 | return (unative_t) rc; |
753 | 753 | ||
754 | return sys_ipc_forward_common(callid, phoneid, |
754 | return sys_ipc_forward_common(callid, phoneid, |
755 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
755 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
756 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
756 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
757 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
757 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
758 | } |
758 | } |
759 | 759 | ||
760 | /** Answer an IPC call - fast version. |
760 | /** Answer an IPC call - fast version. |
761 | * |
761 | * |
762 | * This function can handle only two return arguments of payload, but is faster |
762 | * This function can handle only two return arguments of payload, but is faster |
763 | * than the generic sys_ipc_answer(). |
763 | * than the generic sys_ipc_answer(). |
764 | * |
764 | * |
765 | * @param callid Hash of the call to be answered. |
765 | * @param callid Hash of the call to be answered. |
766 | * @param retval Return value of the answer. |
766 | * @param retval Return value of the answer. |
767 | * @param arg1 Service-defined return value. |
767 | * @param arg1 Service-defined return value. |
768 | * @param arg2 Service-defined return value. |
768 | * @param arg2 Service-defined return value. |
769 | * @param arg3 Service-defined return value. |
769 | * @param arg3 Service-defined return value. |
770 | * @param arg4 Service-defined return value. |
770 | * @param arg4 Service-defined return value. |
771 | * |
771 | * |
772 | * @return Return 0 on success, otherwise return an error code. |
772 | * @return Return 0 on success, otherwise return an error code. |
773 | */ |
773 | */ |
774 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
774 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
775 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
775 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
776 | { |
776 | { |
777 | call_t *call; |
777 | call_t *call; |
778 | ipc_data_t saved_data; |
778 | ipc_data_t saved_data; |
779 | int saveddata = 0; |
779 | int saveddata = 0; |
780 | int rc; |
780 | int rc; |
781 | 781 | ||
782 | /* Do not answer notification callids */ |
782 | /* Do not answer notification callids */ |
783 | if (callid & IPC_CALLID_NOTIFICATION) |
783 | if (callid & IPC_CALLID_NOTIFICATION) |
784 | return 0; |
784 | return 0; |
785 | 785 | ||
786 | call = get_call(callid); |
786 | call = get_call(callid); |
787 | if (!call) |
787 | if (!call) |
788 | return ENOENT; |
788 | return ENOENT; |
789 | 789 | ||
790 | if (answer_need_old(call)) { |
790 | if (answer_need_old(call)) { |
791 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
791 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
792 | saveddata = 1; |
792 | saveddata = 1; |
793 | } |
793 | } |
794 | 794 | ||
795 | IPC_SET_RETVAL(call->data, retval); |
795 | IPC_SET_RETVAL(call->data, retval); |
796 | IPC_SET_ARG1(call->data, arg1); |
796 | IPC_SET_ARG1(call->data, arg1); |
797 | IPC_SET_ARG2(call->data, arg2); |
797 | IPC_SET_ARG2(call->data, arg2); |
798 | IPC_SET_ARG3(call->data, arg3); |
798 | IPC_SET_ARG3(call->data, arg3); |
799 | IPC_SET_ARG4(call->data, arg4); |
799 | IPC_SET_ARG4(call->data, arg4); |
800 | /* |
800 | /* |
801 | * To achieve deterministic behavior, zero out arguments that are beyond |
801 | * To achieve deterministic behavior, zero out arguments that are beyond |
802 | * the limits of the fast version. |
802 | * the limits of the fast version. |
803 | */ |
803 | */ |
804 | IPC_SET_ARG5(call->data, 0); |
804 | IPC_SET_ARG5(call->data, 0); |
805 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
805 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
806 | 806 | ||
807 | ipc_answer(&TASK->answerbox, call); |
807 | ipc_answer(&TASK->answerbox, call); |
808 | return rc; |
808 | return rc; |
809 | } |
809 | } |
810 | 810 | ||
811 | /** Answer an IPC call. |
811 | /** Answer an IPC call. |
812 | * |
812 | * |
813 | * @param callid Hash of the call to be answered. |
813 | * @param callid Hash of the call to be answered. |
814 | * @param data Userspace address of call data with the answer. |
814 | * @param data Userspace address of call data with the answer. |
815 | * |
815 | * |
816 | * @return Return 0 on success, otherwise return an error code. |
816 | * @return Return 0 on success, otherwise return an error code. |
817 | */ |
817 | */ |
818 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
818 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
819 | { |
819 | { |
820 | call_t *call; |
820 | call_t *call; |
821 | ipc_data_t saved_data; |
821 | ipc_data_t saved_data; |
822 | int saveddata = 0; |
822 | int saveddata = 0; |
823 | int rc; |
823 | int rc; |
824 | 824 | ||
825 | /* Do not answer notification callids */ |
825 | /* Do not answer notification callids */ |
826 | if (callid & IPC_CALLID_NOTIFICATION) |
826 | if (callid & IPC_CALLID_NOTIFICATION) |
827 | return 0; |
827 | return 0; |
828 | 828 | ||
829 | call = get_call(callid); |
829 | call = get_call(callid); |
830 | if (!call) |
830 | if (!call) |
831 | return ENOENT; |
831 | return ENOENT; |
832 | 832 | ||
833 | if (answer_need_old(call)) { |
833 | if (answer_need_old(call)) { |
834 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
834 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
835 | saveddata = 1; |
835 | saveddata = 1; |
836 | } |
836 | } |
837 | rc = copy_from_uspace(&call->data.args, &data->args, |
837 | rc = copy_from_uspace(&call->data.args, &data->args, |
838 | sizeof(call->data.args)); |
838 | sizeof(call->data.args)); |
839 | if (rc != 0) |
839 | if (rc != 0) |
840 | return rc; |
840 | return rc; |
841 | 841 | ||
842 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
842 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
843 | 843 | ||
844 | ipc_answer(&TASK->answerbox, call); |
844 | ipc_answer(&TASK->answerbox, call); |
845 | 845 | ||
846 | return rc; |
846 | return rc; |
847 | } |
847 | } |
848 | 848 | ||
849 | /** Hang up a phone. |
849 | /** Hang up a phone. |
850 | * |
850 | * |
851 | * @param Phone handle of the phone to be hung up. |
851 | * @param Phone handle of the phone to be hung up. |
852 | * |
852 | * |
853 | * @return Return 0 on success or an error code. |
853 | * @return Return 0 on success or an error code. |
854 | */ |
854 | */ |
855 | unative_t sys_ipc_hangup(int phoneid) |
855 | unative_t sys_ipc_hangup(int phoneid) |
856 | { |
856 | { |
857 | phone_t *phone; |
857 | phone_t *phone; |
858 | 858 | ||
859 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
859 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
860 | 860 | ||
861 | if (ipc_phone_hangup(phone)) |
861 | if (ipc_phone_hangup(phone)) |
862 | return -1; |
862 | return -1; |
863 | 863 | ||
864 | return 0; |
864 | return 0; |
865 | } |
865 | } |
866 | 866 | ||
867 | /** Wait for an incoming IPC call or an answer. |
867 | /** Wait for an incoming IPC call or an answer. |
868 | * |
868 | * |
869 | * @param calldata Pointer to buffer where the call/answer data is stored. |
869 | * @param calldata Pointer to buffer where the call/answer data is stored. |
870 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
870 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
871 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
871 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
872 | * for explanation. |
872 | * for explanation. |
873 | * |
873 | * |
874 | * @return Hash of the call. |
874 | * @return Hash of the call. |
875 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
875 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
876 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
876 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
877 | * answer. |
877 | * answer. |
878 | */ |
878 | */ |
879 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
879 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
880 | { |
880 | { |
881 | call_t *call; |
881 | call_t *call; |
882 | 882 | ||
883 | restart: |
883 | restart: |
884 | 884 | ||
885 | #ifdef CONFIG_UDEBUG |
885 | #ifdef CONFIG_UDEBUG |
886 | udebug_stoppable_begin(); |
886 | udebug_stoppable_begin(); |
887 | #endif |
887 | #endif |
888 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
888 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
889 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
889 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
890 | 890 | ||
891 | #ifdef CONFIG_UDEBUG |
891 | #ifdef CONFIG_UDEBUG |
892 | udebug_stoppable_end(); |
892 | udebug_stoppable_end(); |
893 | #endif |
893 | #endif |
894 | if (!call) |
894 | if (!call) |
895 | return 0; |
895 | return 0; |
896 | 896 | ||
897 | if (call->flags & IPC_CALL_NOTIF) { |
897 | if (call->flags & IPC_CALL_NOTIF) { |
898 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
898 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
899 | 899 | ||
900 | /* Set in_phone_hash to the interrupt counter */ |
900 | /* Set in_phone_hash to the interrupt counter */ |
901 | call->data.phone = (void *) call->priv; |
901 | call->data.phone = (void *) call->priv; |
902 | 902 | ||
903 | STRUCT_TO_USPACE(calldata, &call->data); |
903 | STRUCT_TO_USPACE(calldata, &call->data); |
904 | 904 | ||
905 | ipc_call_free(call); |
905 | ipc_call_free(call); |
906 | 906 | ||
907 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
907 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
908 | } |
908 | } |
909 | 909 | ||
910 | if (call->flags & IPC_CALL_ANSWERED) { |
910 | if (call->flags & IPC_CALL_ANSWERED) { |
911 | process_answer(call); |
911 | process_answer(call); |
912 | 912 | ||
913 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
913 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
914 | 914 | ||
915 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
915 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
916 | ipc_call_free(call); |
916 | ipc_call_free(call); |
917 | goto restart; |
917 | goto restart; |
918 | } else { |
918 | } else { |
919 | /* |
919 | /* |
920 | * Decrement the counter of active calls only if the |
920 | * Decrement the counter of active calls only if the |
921 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
921 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
922 | * which doesn't contribute to the counter. |
922 | * which doesn't contribute to the counter. |
923 | */ |
923 | */ |
924 | atomic_dec(&TASK->active_calls); |
924 | atomic_dec(&TASK->active_calls); |
925 | } |
925 | } |
926 | 926 | ||
927 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
927 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
928 | ipc_call_free(call); |
928 | ipc_call_free(call); |
929 | 929 | ||
930 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
930 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
931 | } |
931 | } |
932 | 932 | ||
933 | if (process_request(&TASK->answerbox, call)) |
933 | if (process_request(&TASK->answerbox, call)) |
934 | goto restart; |
934 | goto restart; |
935 | 935 | ||
936 | /* Include phone address('id') of the caller in the request, |
936 | /* Include phone address('id') of the caller in the request, |
937 | * copy whole call->data, not only call->data.args */ |
937 | * copy whole call->data, not only call->data.args */ |
938 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
938 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
- | 939 | /* XXX |
|
- | 940 | * To avoid deadlocks in synchronous calls |
|
- | 941 | * this should be replaced by discarding |
|
- | 942 | * the call and notifying the caller. |
|
- | 943 | */ |
|
939 | return 0; |
944 | return 0; |
940 | } |
945 | } |
941 | return (unative_t)call; |
946 | return (unative_t)call; |
942 | } |
947 | } |
943 | 948 | ||
944 | /** Connect an IRQ handler to a task. |
949 | /** Connect an IRQ handler to a task. |
945 | * |
950 | * |
946 | * @param inr IRQ number. |
951 | * @param inr IRQ number. |
947 | * @param devno Device number. |
952 | * @param devno Device number. |
948 | * @param method Method to be associated with the notification. |
953 | * @param method Method to be associated with the notification. |
949 | * @param ucode Uspace pointer to the top-half pseudocode. |
954 | * @param ucode Uspace pointer to the top-half pseudocode. |
950 | * |
955 | * |
951 | * @return EPERM or a return code returned by ipc_irq_register(). |
956 | * @return EPERM or a return code returned by ipc_irq_register(). |
952 | */ |
957 | */ |
953 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
958 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
954 | irq_code_t *ucode) |
959 | irq_code_t *ucode) |
955 | { |
960 | { |
956 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
961 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
957 | return EPERM; |
962 | return EPERM; |
958 | 963 | ||
959 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
964 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
960 | } |
965 | } |
961 | 966 | ||
962 | /** Disconnect an IRQ handler from a task. |
967 | /** Disconnect an IRQ handler from a task. |
963 | * |
968 | * |
964 | * @param inr IRQ number. |
969 | * @param inr IRQ number. |
965 | * @param devno Device number. |
970 | * @param devno Device number. |
966 | * |
971 | * |
967 | * @return Zero on success or EPERM on error.. |
972 | * @return Zero on success or EPERM on error.. |
968 | */ |
973 | */ |
969 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
974 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
970 | { |
975 | { |
971 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
976 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
972 | return EPERM; |
977 | return EPERM; |
973 | 978 | ||
974 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
979 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
975 | 980 | ||
976 | return 0; |
981 | return 0; |
977 | } |
982 | } |
978 | 983 | ||
979 | #include <console/console.h> |
984 | #include <console/console.h> |
980 | 985 | ||
981 | /** |
986 | /** |
982 | * Syscall connect to a task by id. |
987 | * Syscall connect to a task by id. |
983 | * |
988 | * |
984 | * @return Phone id on success, or negative error code. |
989 | * @return Phone id on success, or negative error code. |
985 | */ |
990 | */ |
986 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
991 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
987 | { |
992 | { |
988 | #ifdef CONFIG_UDEBUG |
993 | #ifdef CONFIG_UDEBUG |
989 | sysarg64_t taskid_arg; |
994 | sysarg64_t taskid_arg; |
990 | int rc; |
995 | int rc; |
991 | 996 | ||
992 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
997 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
993 | if (rc != 0) |
998 | if (rc != 0) |
994 | return (unative_t) rc; |
999 | return (unative_t) rc; |
995 | 1000 | ||
996 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
1001 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
997 | 1002 | ||
998 | return ipc_connect_kbox(taskid_arg.value); |
1003 | return ipc_connect_kbox(taskid_arg.value); |
999 | #else |
1004 | #else |
1000 | return (unative_t) ENOTSUP; |
1005 | return (unative_t) ENOTSUP; |
1001 | #endif |
1006 | #endif |
1002 | } |
1007 | } |
1003 | 1008 | ||
1004 | /** @} |
1009 | /** @} |
1005 | */ |
1010 | */ |
1006 | 1011 |