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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_CONNECTION_CLONE: |
96 | case IPC_M_CONNECTION_CLONE: |
97 | case IPC_M_CONNECT_ME: |
97 | case IPC_M_CONNECT_ME: |
98 | case IPC_M_PHONE_HUNGUP: |
98 | case IPC_M_PHONE_HUNGUP: |
99 | /* This message is meant only for the original recipient. */ |
99 | /* This message is meant only for the original recipient. */ |
100 | return 0; |
100 | return 0; |
101 | default: |
101 | default: |
102 | return 1; |
102 | return 1; |
103 | } |
103 | } |
104 | } |
104 | } |
105 | 105 | ||
106 | /** Decide if the message with this method is immutable on forward. |
106 | /** Decide if the message with this method is immutable on forward. |
107 | * |
107 | * |
108 | * - some system messages may be forwarded but their content cannot be altered |
108 | * - some system messages may be forwarded but their content cannot be altered |
109 | * |
109 | * |
110 | * @param method Method to be decided. |
110 | * @param method Method to be decided. |
111 | * |
111 | * |
112 | * @return Return 1 if the method is immutable on forward. |
112 | * @return Return 1 if the method is immutable on forward. |
113 | * Otherwise return 0. |
113 | * Otherwise return 0. |
114 | */ |
114 | */ |
115 | static inline int method_is_immutable(unative_t method) |
115 | static inline int method_is_immutable(unative_t method) |
116 | { |
116 | { |
117 | switch (method) { |
117 | switch (method) { |
118 | case IPC_M_SHARE_OUT: |
118 | case IPC_M_SHARE_OUT: |
119 | case IPC_M_SHARE_IN: |
119 | case IPC_M_SHARE_IN: |
120 | case IPC_M_DATA_WRITE: |
120 | case IPC_M_DATA_WRITE: |
121 | case IPC_M_DATA_READ: |
121 | case IPC_M_DATA_READ: |
122 | return 1; |
122 | return 1; |
123 | break; |
123 | break; |
124 | default: |
124 | default: |
125 | return 0; |
125 | return 0; |
126 | } |
126 | } |
127 | } |
127 | } |
128 | 128 | ||
129 | 129 | ||
130 | /*********************************************************************** |
130 | /*********************************************************************** |
131 | * Functions that preprocess answer before sending it to the recepient. |
131 | * Functions that preprocess answer before sending it to the recepient. |
132 | ***********************************************************************/ |
132 | ***********************************************************************/ |
133 | 133 | ||
134 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
134 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
135 | * for answer_preprocess(). |
135 | * for answer_preprocess(). |
136 | * |
136 | * |
137 | * @param call Call structure to be decided. |
137 | * @param call Call structure to be decided. |
138 | * |
138 | * |
139 | * @return Return 1 if the old call contents should be saved. |
139 | * @return Return 1 if the old call contents should be saved. |
140 | * Return 0 otherwise. |
140 | * Return 0 otherwise. |
141 | */ |
141 | */ |
142 | static inline int answer_need_old(call_t *call) |
142 | static inline int answer_need_old(call_t *call) |
143 | { |
143 | { |
144 | switch (IPC_GET_METHOD(call->data)) { |
144 | switch (IPC_GET_METHOD(call->data)) { |
145 | case IPC_M_CONNECTION_CLONE: |
145 | case IPC_M_CONNECTION_CLONE: |
146 | case IPC_M_CONNECT_ME: |
146 | case IPC_M_CONNECT_ME: |
147 | case IPC_M_CONNECT_TO_ME: |
147 | case IPC_M_CONNECT_TO_ME: |
148 | case IPC_M_CONNECT_ME_TO: |
148 | case IPC_M_CONNECT_ME_TO: |
149 | case IPC_M_SHARE_OUT: |
149 | case IPC_M_SHARE_OUT: |
150 | case IPC_M_SHARE_IN: |
150 | case IPC_M_SHARE_IN: |
151 | case IPC_M_DATA_WRITE: |
151 | case IPC_M_DATA_WRITE: |
152 | case IPC_M_DATA_READ: |
152 | case IPC_M_DATA_READ: |
153 | return 1; |
153 | return 1; |
154 | default: |
154 | default: |
155 | return 0; |
155 | return 0; |
156 | } |
156 | } |
157 | } |
157 | } |
158 | 158 | ||
159 | /** Interpret process answer as control information. |
159 | /** Interpret process answer as control information. |
160 | * |
160 | * |
161 | * This function is called directly after sys_ipc_answer(). |
161 | * This function is called directly after sys_ipc_answer(). |
162 | * |
162 | * |
163 | * @param answer Call structure with the answer. |
163 | * @param answer Call structure with the answer. |
164 | * @param olddata Saved data of the request. |
164 | * @param olddata Saved data of the request. |
165 | * |
165 | * |
166 | * @return Return 0 on success or an error code. |
166 | * @return Return 0 on success or an error code. |
167 | */ |
167 | */ |
168 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
168 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
169 | { |
169 | { |
170 | int phoneid; |
170 | int phoneid; |
171 | 171 | ||
172 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
172 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
173 | /* In case of forward, hangup the forwared phone, |
173 | /* In case of forward, hangup the forwared phone, |
174 | * not the originator |
174 | * not the originator |
175 | */ |
175 | */ |
176 | mutex_lock(&answer->data.phone->lock); |
176 | mutex_lock(&answer->data.phone->lock); |
177 | spinlock_lock(&TASK->answerbox.lock); |
177 | spinlock_lock(&TASK->answerbox.lock); |
178 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
178 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
179 | list_remove(&answer->data.phone->link); |
179 | list_remove(&answer->data.phone->link); |
180 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
180 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
181 | } |
181 | } |
182 | spinlock_unlock(&TASK->answerbox.lock); |
182 | spinlock_unlock(&TASK->answerbox.lock); |
183 | mutex_unlock(&answer->data.phone->lock); |
183 | mutex_unlock(&answer->data.phone->lock); |
184 | } |
184 | } |
185 | 185 | ||
186 | if (!olddata) |
186 | if (!olddata) |
187 | return 0; |
187 | return 0; |
188 | 188 | ||
189 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECTION_CLONE) { |
189 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECTION_CLONE) { |
190 | phoneid = IPC_GET_ARG1(*olddata); |
190 | phoneid = IPC_GET_ARG1(*olddata); |
191 | phone_t *phone = &TASK->phones[phoneid]; |
191 | phone_t *phone = &TASK->phones[phoneid]; |
192 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
192 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
193 | /* |
193 | /* |
194 | * The recipient of the cloned phone rejected the offer. |
194 | * The recipient of the cloned phone rejected the offer. |
195 | * In this case, the connection was established at the |
195 | * In this case, the connection was established at the |
196 | * request time and therefore we need to slam the phone. |
196 | * request time and therefore we need to slam the phone. |
197 | * We don't merely hangup as that would result in |
197 | * We don't merely hangup as that would result in |
198 | * sending IPC_M_HUNGUP to the third party on the |
198 | * sending IPC_M_HUNGUP to the third party on the |
199 | * other side of the cloned phone. |
199 | * other side of the cloned phone. |
200 | */ |
200 | */ |
201 | mutex_lock(&phone->lock); |
201 | mutex_lock(&phone->lock); |
202 | if (phone->state == IPC_PHONE_CONNECTED) { |
202 | if (phone->state == IPC_PHONE_CONNECTED) { |
203 | spinlock_lock(&phone->callee->lock); |
203 | spinlock_lock(&phone->callee->lock); |
204 | list_remove(&phone->link); |
204 | list_remove(&phone->link); |
205 | phone->state = IPC_PHONE_SLAMMED; |
205 | phone->state = IPC_PHONE_SLAMMED; |
206 | spinlock_unlock(&phone->callee->lock); |
206 | spinlock_unlock(&phone->callee->lock); |
207 | } |
207 | } |
208 | mutex_unlock(&phone->lock); |
208 | mutex_unlock(&phone->lock); |
209 | } |
209 | } |
210 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME) { |
210 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME) { |
211 | phone_t *phone = (phone_t *)IPC_GET_ARG5(*olddata); |
211 | phone_t *phone = (phone_t *)IPC_GET_ARG5(*olddata); |
212 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
212 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
213 | /* |
213 | /* |
214 | * The other party on the cloned phoned rejected our |
214 | * The other party on the cloned phoned rejected our |
215 | * request for connection on the protocol level. |
215 | * request for connection on the protocol level. |
216 | * We need to break the connection without sending |
216 | * We need to break the connection without sending |
217 | * IPC_M_HUNGUP back. |
217 | * IPC_M_HUNGUP back. |
218 | */ |
218 | */ |
219 | mutex_lock(&phone->lock); |
219 | mutex_lock(&phone->lock); |
220 | if (phone->state == IPC_PHONE_CONNECTED) { |
220 | if (phone->state == IPC_PHONE_CONNECTED) { |
221 | spinlock_lock(&phone->callee->lock); |
221 | spinlock_lock(&phone->callee->lock); |
222 | list_remove(&phone->link); |
222 | list_remove(&phone->link); |
223 | phone->state = IPC_PHONE_SLAMMED; |
223 | phone->state = IPC_PHONE_SLAMMED; |
224 | spinlock_unlock(&phone->callee->lock); |
224 | spinlock_unlock(&phone->callee->lock); |
225 | } |
225 | } |
226 | mutex_unlock(&phone->lock); |
226 | mutex_unlock(&phone->lock); |
227 | } |
227 | } |
228 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
228 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
229 | phoneid = IPC_GET_ARG5(*olddata); |
229 | phoneid = IPC_GET_ARG5(*olddata); |
230 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
230 | if (IPC_GET_RETVAL(answer->data) != EOK) { |
231 | /* The connection was not accepted */ |
231 | /* The connection was not accepted */ |
232 | phone_dealloc(phoneid); |
232 | phone_dealloc(phoneid); |
233 | } else { |
233 | } else { |
234 | /* The connection was accepted */ |
234 | /* The connection was accepted */ |
235 | phone_connect(phoneid, &answer->sender->answerbox); |
235 | phone_connect(phoneid, &answer->sender->answerbox); |
236 | /* Set 'phone hash' as arg5 of response */ |
236 | /* Set 'phone hash' as arg5 of response */ |
237 | IPC_SET_ARG5(answer->data, |
237 | IPC_SET_ARG5(answer->data, |
238 | (unative_t) &TASK->phones[phoneid]); |
238 | (unative_t) &TASK->phones[phoneid]); |
239 | } |
239 | } |
240 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
240 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
241 | /* If the users accepted call, connect */ |
241 | /* If the users accepted call, connect */ |
242 | if (IPC_GET_RETVAL(answer->data) == EOK) { |
242 | if (IPC_GET_RETVAL(answer->data) == EOK) { |
243 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
243 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
244 | &TASK->answerbox); |
244 | &TASK->answerbox); |
245 | } |
245 | } |
246 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
246 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
247 | if (!IPC_GET_RETVAL(answer->data)) { |
247 | if (!IPC_GET_RETVAL(answer->data)) { |
248 | /* Accepted, handle as_area receipt */ |
248 | /* Accepted, handle as_area receipt */ |
249 | ipl_t ipl; |
249 | ipl_t ipl; |
250 | int rc; |
250 | int rc; |
251 | as_t *as; |
251 | as_t *as; |
252 | 252 | ||
253 | ipl = interrupts_disable(); |
253 | ipl = interrupts_disable(); |
254 | spinlock_lock(&answer->sender->lock); |
254 | spinlock_lock(&answer->sender->lock); |
255 | as = answer->sender->as; |
255 | as = answer->sender->as; |
256 | spinlock_unlock(&answer->sender->lock); |
256 | spinlock_unlock(&answer->sender->lock); |
257 | interrupts_restore(ipl); |
257 | interrupts_restore(ipl); |
258 | 258 | ||
259 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
259 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
260 | IPC_GET_ARG2(*olddata), AS, |
260 | IPC_GET_ARG2(*olddata), AS, |
261 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
261 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
262 | IPC_SET_RETVAL(answer->data, rc); |
262 | IPC_SET_RETVAL(answer->data, rc); |
263 | return rc; |
263 | return rc; |
264 | } |
264 | } |
265 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
265 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
266 | if (!IPC_GET_RETVAL(answer->data)) { |
266 | if (!IPC_GET_RETVAL(answer->data)) { |
267 | ipl_t ipl; |
267 | ipl_t ipl; |
268 | as_t *as; |
268 | as_t *as; |
269 | int rc; |
269 | int rc; |
270 | 270 | ||
271 | ipl = interrupts_disable(); |
271 | ipl = interrupts_disable(); |
272 | spinlock_lock(&answer->sender->lock); |
272 | spinlock_lock(&answer->sender->lock); |
273 | as = answer->sender->as; |
273 | as = answer->sender->as; |
274 | spinlock_unlock(&answer->sender->lock); |
274 | spinlock_unlock(&answer->sender->lock); |
275 | interrupts_restore(ipl); |
275 | interrupts_restore(ipl); |
276 | 276 | ||
277 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
277 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
278 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
278 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
279 | IPC_GET_ARG2(answer->data)); |
279 | IPC_GET_ARG2(answer->data)); |
280 | IPC_SET_RETVAL(answer->data, rc); |
280 | IPC_SET_RETVAL(answer->data, rc); |
281 | } |
281 | } |
282 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
282 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
283 | ASSERT(!answer->buffer); |
283 | ASSERT(!answer->buffer); |
284 | if (!IPC_GET_RETVAL(answer->data)) { |
284 | if (!IPC_GET_RETVAL(answer->data)) { |
285 | /* The recipient agreed to send data. */ |
285 | /* The recipient agreed to send data. */ |
286 | uintptr_t src = IPC_GET_ARG1(answer->data); |
286 | uintptr_t src = IPC_GET_ARG1(answer->data); |
287 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
287 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
288 | size_t max_size = IPC_GET_ARG2(*olddata); |
288 | size_t max_size = IPC_GET_ARG2(*olddata); |
289 | size_t size = IPC_GET_ARG2(answer->data); |
289 | size_t size = IPC_GET_ARG2(answer->data); |
290 | if (size && size <= max_size) { |
290 | if (size && size <= max_size) { |
291 | /* |
291 | /* |
292 | * Copy the destination VA so that this piece of |
292 | * Copy the destination VA so that this piece of |
293 | * information is not lost. |
293 | * information is not lost. |
294 | */ |
294 | */ |
295 | IPC_SET_ARG1(answer->data, dst); |
295 | IPC_SET_ARG1(answer->data, dst); |
296 | 296 | ||
297 | answer->buffer = malloc(size, 0); |
297 | answer->buffer = malloc(size, 0); |
298 | int rc = copy_from_uspace(answer->buffer, |
298 | int rc = copy_from_uspace(answer->buffer, |
299 | (void *) src, size); |
299 | (void *) src, size); |
300 | if (rc) { |
300 | if (rc) { |
301 | IPC_SET_RETVAL(answer->data, rc); |
301 | IPC_SET_RETVAL(answer->data, rc); |
302 | free(answer->buffer); |
302 | free(answer->buffer); |
303 | answer->buffer = NULL; |
303 | answer->buffer = NULL; |
304 | } |
304 | } |
305 | } else if (!size) { |
305 | } else if (!size) { |
306 | IPC_SET_RETVAL(answer->data, EOK); |
306 | IPC_SET_RETVAL(answer->data, EOK); |
307 | } else { |
307 | } else { |
308 | IPC_SET_RETVAL(answer->data, ELIMIT); |
308 | IPC_SET_RETVAL(answer->data, ELIMIT); |
309 | } |
309 | } |
310 | } |
310 | } |
311 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
311 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
312 | ASSERT(answer->buffer); |
312 | ASSERT(answer->buffer); |
313 | if (!IPC_GET_RETVAL(answer->data)) { |
313 | if (!IPC_GET_RETVAL(answer->data)) { |
314 | /* The recipient agreed to receive data. */ |
314 | /* The recipient agreed to receive data. */ |
315 | int rc; |
315 | int rc; |
316 | uintptr_t dst; |
316 | uintptr_t dst; |
317 | size_t size; |
317 | size_t size; |
318 | size_t max_size; |
318 | size_t max_size; |
319 | 319 | ||
320 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
320 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
321 | size = (size_t)IPC_GET_ARG2(answer->data); |
321 | size = (size_t)IPC_GET_ARG2(answer->data); |
322 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
322 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
323 | 323 | ||
324 | if (size <= max_size) { |
324 | if (size <= max_size) { |
325 | rc = copy_to_uspace((void *) dst, |
325 | rc = copy_to_uspace((void *) dst, |
326 | answer->buffer, size); |
326 | answer->buffer, size); |
327 | if (rc) |
327 | if (rc) |
328 | IPC_SET_RETVAL(answer->data, rc); |
328 | IPC_SET_RETVAL(answer->data, rc); |
329 | } else { |
329 | } else { |
330 | IPC_SET_RETVAL(answer->data, ELIMIT); |
330 | IPC_SET_RETVAL(answer->data, ELIMIT); |
331 | } |
331 | } |
332 | } |
332 | } |
333 | free(answer->buffer); |
333 | free(answer->buffer); |
334 | answer->buffer = NULL; |
334 | answer->buffer = NULL; |
335 | } |
335 | } |
336 | return 0; |
336 | return 0; |
337 | } |
337 | } |
338 | 338 | ||
- | 339 | static void phones_lock(phone_t *p1, phone_t *p2) |
|
- | 340 | { |
|
- | 341 | if (p1 < p2) { |
|
- | 342 | mutex_lock(&p1->lock); |
|
- | 343 | mutex_lock(&p2->lock); |
|
- | 344 | } else if (p1 > p2) { |
|
- | 345 | mutex_lock(&p2->lock); |
|
- | 346 | mutex_lock(&p1->lock); |
|
- | 347 | } else { |
|
- | 348 | mutex_lock(&p1->lock); |
|
- | 349 | } |
|
- | 350 | } |
|
- | 351 | ||
- | 352 | static void phones_unlock(phone_t *p1, phone_t *p2) |
|
- | 353 | { |
|
- | 354 | mutex_unlock(&p1->lock); |
|
- | 355 | if (p1 != p2) |
|
- | 356 | mutex_unlock(&p2->lock); |
|
- | 357 | } |
|
- | 358 | ||
339 | /** Called before the request is sent. |
359 | /** Called before the request is sent. |
340 | * |
360 | * |
341 | * @param call Call structure with the request. |
361 | * @param call Call structure with the request. |
342 | * @param phone Phone that the call will be sent through. |
362 | * @param phone Phone that the call will be sent through. |
343 | * |
363 | * |
344 | * @return Return 0 on success, ELIMIT or EPERM on error. |
364 | * @return Return 0 on success, ELIMIT or EPERM on error. |
345 | */ |
365 | */ |
346 | static int request_preprocess(call_t *call, phone_t *phone) |
366 | static int request_preprocess(call_t *call, phone_t *phone) |
347 | { |
367 | { |
348 | int newphid; |
368 | int newphid; |
349 | size_t size; |
369 | size_t size; |
350 | uintptr_t src; |
370 | uintptr_t src; |
351 | int rc; |
371 | int rc; |
352 | 372 | ||
353 | switch (IPC_GET_METHOD(call->data)) { |
373 | switch (IPC_GET_METHOD(call->data)) { |
354 | case IPC_M_CONNECTION_CLONE: { |
374 | case IPC_M_CONNECTION_CLONE: { |
355 | phone_t *cloned_phone; |
375 | phone_t *cloned_phone; |
356 | GET_CHECK_PHONE(cloned_phone, IPC_GET_ARG1(call->data), |
376 | GET_CHECK_PHONE(cloned_phone, IPC_GET_ARG1(call->data), |
357 | return ENOENT); |
377 | return ENOENT); |
358 | if (cloned_phone < phone) { |
- | |
359 | mutex_lock(&cloned_phone->lock); |
378 | phones_lock(cloned_phone, phone); |
360 | mutex_lock(&phone->lock); |
- | |
361 | } else if (cloned_phone > phone) { |
- | |
362 | mutex_lock(&phone->lock); |
- | |
363 | mutex_lock(&cloned_phone->lock); |
- | |
364 | } else { |
- | |
365 | mutex_lock(&phone->lock); |
- | |
366 | } |
- | |
367 | if ((cloned_phone->state != IPC_PHONE_CONNECTED) || |
379 | if ((cloned_phone->state != IPC_PHONE_CONNECTED) || |
368 | phone->state != IPC_PHONE_CONNECTED) { |
380 | phone->state != IPC_PHONE_CONNECTED) { |
369 | if (cloned_phone != phone) |
- | |
370 | mutex_unlock(&cloned_phone->lock); |
381 | phones_unlock(cloned_phone, phone); |
371 | mutex_unlock(&phone->lock); |
- | |
372 | return EINVAL; |
382 | return EINVAL; |
373 | } |
383 | } |
374 | /* |
384 | /* |
375 | * We can be pretty sure now that both tasks exist and we are |
385 | * We can be pretty sure now that both tasks exist and we are |
376 | * connected to them. As we continue to hold the phone locks, |
386 | * connected to them. As we continue to hold the phone locks, |
377 | * we are effectively preventing them from finishing their |
387 | * we are effectively preventing them from finishing their |
378 | * potential cleanup. |
388 | * potential cleanup. |
379 | */ |
389 | */ |
380 | newphid = phone_alloc(phone->callee->task); |
390 | newphid = phone_alloc(phone->callee->task); |
381 | if (newphid < 0) { |
391 | if (newphid < 0) { |
382 | if (cloned_phone != phone) |
- | |
383 | mutex_unlock(&cloned_phone->lock); |
392 | phones_unlock(cloned_phone, phone); |
384 | mutex_unlock(&phone->lock); |
- | |
385 | return ELIMIT; |
393 | return ELIMIT; |
386 | } |
394 | } |
387 | ipc_phone_connect(&phone->callee->task->phones[newphid], |
395 | ipc_phone_connect(&phone->callee->task->phones[newphid], |
388 | cloned_phone->callee); |
396 | cloned_phone->callee); |
389 | if (cloned_phone != phone) |
- | |
390 | mutex_unlock(&cloned_phone->lock); |
397 | phones_unlock(cloned_phone, phone); |
391 | mutex_unlock(&phone->lock); |
- | |
392 | /* Set the new phone for the callee. */ |
398 | /* Set the new phone for the callee. */ |
393 | IPC_SET_ARG1(call->data, newphid); |
399 | IPC_SET_ARG1(call->data, newphid); |
394 | break; |
400 | break; |
395 | } |
401 | } |
396 | case IPC_M_CONNECT_ME: |
402 | case IPC_M_CONNECT_ME: |
397 | IPC_SET_ARG5(call->data, (unative_t) phone); |
403 | IPC_SET_ARG5(call->data, (unative_t) phone); |
398 | break; |
404 | break; |
399 | case IPC_M_CONNECT_ME_TO: |
405 | case IPC_M_CONNECT_ME_TO: |
400 | newphid = phone_alloc(TASK); |
406 | newphid = phone_alloc(TASK); |
401 | if (newphid < 0) |
407 | if (newphid < 0) |
402 | return ELIMIT; |
408 | return ELIMIT; |
403 | /* Set arg5 for server */ |
409 | /* Set arg5 for server */ |
404 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
410 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
405 | call->flags |= IPC_CALL_CONN_ME_TO; |
411 | call->flags |= IPC_CALL_CONN_ME_TO; |
406 | call->priv = newphid; |
412 | call->priv = newphid; |
407 | break; |
413 | break; |
408 | case IPC_M_SHARE_OUT: |
414 | case IPC_M_SHARE_OUT: |
409 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
415 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
410 | if (!size) |
416 | if (!size) |
411 | return EPERM; |
417 | return EPERM; |
412 | IPC_SET_ARG2(call->data, size); |
418 | IPC_SET_ARG2(call->data, size); |
413 | break; |
419 | break; |
414 | case IPC_M_DATA_READ: |
420 | case IPC_M_DATA_READ: |
415 | size = IPC_GET_ARG2(call->data); |
421 | size = IPC_GET_ARG2(call->data); |
416 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
422 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
417 | return ELIMIT; |
423 | return ELIMIT; |
418 | break; |
424 | break; |
419 | case IPC_M_DATA_WRITE: |
425 | case IPC_M_DATA_WRITE: |
420 | src = IPC_GET_ARG1(call->data); |
426 | src = IPC_GET_ARG1(call->data); |
421 | size = IPC_GET_ARG2(call->data); |
427 | size = IPC_GET_ARG2(call->data); |
422 | 428 | ||
423 | if (size > DATA_XFER_LIMIT) |
429 | if (size > DATA_XFER_LIMIT) |
424 | return ELIMIT; |
430 | return ELIMIT; |
425 | 431 | ||
426 | call->buffer = (uint8_t *) malloc(size, 0); |
432 | call->buffer = (uint8_t *) malloc(size, 0); |
427 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
433 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
428 | if (rc != 0) { |
434 | if (rc != 0) { |
429 | free(call->buffer); |
435 | free(call->buffer); |
430 | return rc; |
436 | return rc; |
431 | } |
437 | } |
432 | break; |
438 | break; |
433 | #ifdef CONFIG_UDEBUG |
439 | #ifdef CONFIG_UDEBUG |
434 | case IPC_M_DEBUG_ALL: |
440 | case IPC_M_DEBUG_ALL: |
435 | return udebug_request_preprocess(call, phone); |
441 | return udebug_request_preprocess(call, phone); |
436 | #endif |
442 | #endif |
437 | default: |
443 | default: |
438 | break; |
444 | break; |
439 | } |
445 | } |
440 | return 0; |
446 | return 0; |
441 | } |
447 | } |
442 | 448 | ||
443 | /******************************************************************************* |
449 | /******************************************************************************* |
444 | * Functions called to process received call/answer before passing it to uspace. |
450 | * Functions called to process received call/answer before passing it to uspace. |
445 | *******************************************************************************/ |
451 | *******************************************************************************/ |
446 | 452 | ||
447 | /** Do basic kernel processing of received call answer. |
453 | /** Do basic kernel processing of received call answer. |
448 | * |
454 | * |
449 | * @param call Call structure with the answer. |
455 | * @param call Call structure with the answer. |
450 | */ |
456 | */ |
451 | static void process_answer(call_t *call) |
457 | static void process_answer(call_t *call) |
452 | { |
458 | { |
453 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
459 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
454 | (call->flags & IPC_CALL_FORWARDED)) |
460 | (call->flags & IPC_CALL_FORWARDED)) |
455 | IPC_SET_RETVAL(call->data, EFORWARD); |
461 | IPC_SET_RETVAL(call->data, EFORWARD); |
456 | 462 | ||
457 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
463 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
458 | if (IPC_GET_RETVAL(call->data)) |
464 | if (IPC_GET_RETVAL(call->data)) |
459 | phone_dealloc(call->priv); |
465 | phone_dealloc(call->priv); |
460 | else |
466 | else |
461 | IPC_SET_ARG5(call->data, call->priv); |
467 | IPC_SET_ARG5(call->data, call->priv); |
462 | } |
468 | } |
463 | 469 | ||
464 | if (call->buffer) { |
470 | if (call->buffer) { |
465 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
471 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
466 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
472 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
467 | uintptr_t dst = IPC_GET_ARG1(call->data); |
473 | uintptr_t dst = IPC_GET_ARG1(call->data); |
468 | size_t size = IPC_GET_ARG2(call->data); |
474 | size_t size = IPC_GET_ARG2(call->data); |
469 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
475 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
470 | if (rc) |
476 | if (rc) |
471 | IPC_SET_RETVAL(call->data, rc); |
477 | IPC_SET_RETVAL(call->data, rc); |
472 | free(call->buffer); |
478 | free(call->buffer); |
473 | call->buffer = NULL; |
479 | call->buffer = NULL; |
474 | } |
480 | } |
475 | } |
481 | } |
476 | 482 | ||
477 | /** Do basic kernel processing of received call request. |
483 | /** Do basic kernel processing of received call request. |
478 | * |
484 | * |
479 | * @param box Destination answerbox structure. |
485 | * @param box Destination answerbox structure. |
480 | * @param call Call structure with the request. |
486 | * @param call Call structure with the request. |
481 | * |
487 | * |
482 | * @return Return 0 if the call should be passed to userspace. |
488 | * @return Return 0 if the call should be passed to userspace. |
483 | * Return -1 if the call should be ignored. |
489 | * Return -1 if the call should be ignored. |
484 | */ |
490 | */ |
485 | static int process_request(answerbox_t *box, call_t *call) |
491 | static int process_request(answerbox_t *box, call_t *call) |
486 | { |
492 | { |
487 | int phoneid; |
493 | int phoneid; |
488 | 494 | ||
489 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
495 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
490 | phoneid = phone_alloc(TASK); |
496 | phoneid = phone_alloc(TASK); |
491 | if (phoneid < 0) { /* Failed to allocate phone */ |
497 | if (phoneid < 0) { /* Failed to allocate phone */ |
492 | IPC_SET_RETVAL(call->data, ELIMIT); |
498 | IPC_SET_RETVAL(call->data, ELIMIT); |
493 | ipc_answer(box, call); |
499 | ipc_answer(box, call); |
494 | return -1; |
500 | return -1; |
495 | } |
501 | } |
496 | IPC_SET_ARG5(call->data, phoneid); |
502 | IPC_SET_ARG5(call->data, phoneid); |
497 | } |
503 | } |
498 | switch (IPC_GET_METHOD(call->data)) { |
504 | switch (IPC_GET_METHOD(call->data)) { |
499 | case IPC_M_DEBUG_ALL: |
505 | case IPC_M_DEBUG_ALL: |
500 | return -1; |
506 | return -1; |
501 | default: |
507 | default: |
502 | break; |
508 | break; |
503 | } |
509 | } |
504 | return 0; |
510 | return 0; |
505 | } |
511 | } |
506 | 512 | ||
507 | /** Make a fast call over IPC, wait for reply and return to user. |
513 | /** Make a fast call over IPC, wait for reply and return to user. |
508 | * |
514 | * |
509 | * This function can handle only three arguments of payload, but is faster than |
515 | * This function can handle only three arguments of payload, but is faster than |
510 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
516 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
511 | * |
517 | * |
512 | * @param phoneid Phone handle for the call. |
518 | * @param phoneid Phone handle for the call. |
513 | * @param method Method of the call. |
519 | * @param method Method of the call. |
514 | * @param arg1 Service-defined payload argument. |
520 | * @param arg1 Service-defined payload argument. |
515 | * @param arg2 Service-defined payload argument. |
521 | * @param arg2 Service-defined payload argument. |
516 | * @param arg3 Service-defined payload argument. |
522 | * @param arg3 Service-defined payload argument. |
517 | * @param data Address of userspace structure where the reply call will |
523 | * @param data Address of userspace structure where the reply call will |
518 | * be stored. |
524 | * be stored. |
519 | * |
525 | * |
520 | * @return Returns 0 on success. |
526 | * @return Returns 0 on success. |
521 | * Return ENOENT if there is no such phone handle. |
527 | * Return ENOENT if there is no such phone handle. |
522 | */ |
528 | */ |
523 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
529 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
524 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
530 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
525 | { |
531 | { |
526 | call_t call; |
532 | call_t call; |
527 | phone_t *phone; |
533 | phone_t *phone; |
528 | int res; |
534 | int res; |
529 | int rc; |
535 | int rc; |
530 | 536 | ||
531 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
537 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
532 | 538 | ||
533 | ipc_call_static_init(&call); |
539 | ipc_call_static_init(&call); |
534 | IPC_SET_METHOD(call.data, method); |
540 | IPC_SET_METHOD(call.data, method); |
535 | IPC_SET_ARG1(call.data, arg1); |
541 | IPC_SET_ARG1(call.data, arg1); |
536 | IPC_SET_ARG2(call.data, arg2); |
542 | IPC_SET_ARG2(call.data, arg2); |
537 | IPC_SET_ARG3(call.data, arg3); |
543 | IPC_SET_ARG3(call.data, arg3); |
538 | /* |
544 | /* |
539 | * To achieve deterministic behavior, zero out arguments that are beyond |
545 | * To achieve deterministic behavior, zero out arguments that are beyond |
540 | * the limits of the fast version. |
546 | * the limits of the fast version. |
541 | */ |
547 | */ |
542 | IPC_SET_ARG4(call.data, 0); |
548 | IPC_SET_ARG4(call.data, 0); |
543 | IPC_SET_ARG5(call.data, 0); |
549 | IPC_SET_ARG5(call.data, 0); |
544 | 550 | ||
545 | if (!(res = request_preprocess(&call, phone))) { |
551 | if (!(res = request_preprocess(&call, phone))) { |
546 | #ifdef CONFIG_UDEBUG |
552 | #ifdef CONFIG_UDEBUG |
547 | udebug_stoppable_begin(); |
553 | udebug_stoppable_begin(); |
548 | #endif |
554 | #endif |
549 | rc = ipc_call_sync(phone, &call); |
555 | rc = ipc_call_sync(phone, &call); |
550 | #ifdef CONFIG_UDEBUG |
556 | #ifdef CONFIG_UDEBUG |
551 | udebug_stoppable_end(); |
557 | udebug_stoppable_end(); |
552 | #endif |
558 | #endif |
553 | if (rc != EOK) |
559 | if (rc != EOK) |
554 | return rc; |
560 | return rc; |
555 | process_answer(&call); |
561 | process_answer(&call); |
556 | 562 | ||
557 | } else { |
563 | } else { |
558 | IPC_SET_RETVAL(call.data, res); |
564 | IPC_SET_RETVAL(call.data, res); |
559 | } |
565 | } |
560 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
566 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
561 | if (rc != 0) |
567 | if (rc != 0) |
562 | return rc; |
568 | return rc; |
563 | 569 | ||
564 | return 0; |
570 | return 0; |
565 | } |
571 | } |
566 | 572 | ||
567 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
573 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
568 | * |
574 | * |
569 | * @param phoneid Phone handle for the call. |
575 | * @param phoneid Phone handle for the call. |
570 | * @param question Userspace address of call data with the request. |
576 | * @param question Userspace address of call data with the request. |
571 | * @param reply Userspace address of call data where to store the |
577 | * @param reply Userspace address of call data where to store the |
572 | * answer. |
578 | * answer. |
573 | * |
579 | * |
574 | * @return Zero on success or an error code. |
580 | * @return Zero on success or an error code. |
575 | */ |
581 | */ |
576 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
582 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
577 | ipc_data_t *reply) |
583 | ipc_data_t *reply) |
578 | { |
584 | { |
579 | call_t call; |
585 | call_t call; |
580 | phone_t *phone; |
586 | phone_t *phone; |
581 | int res; |
587 | int res; |
582 | int rc; |
588 | int rc; |
583 | 589 | ||
584 | ipc_call_static_init(&call); |
590 | ipc_call_static_init(&call); |
585 | rc = copy_from_uspace(&call.data.args, &question->args, |
591 | rc = copy_from_uspace(&call.data.args, &question->args, |
586 | sizeof(call.data.args)); |
592 | sizeof(call.data.args)); |
587 | if (rc != 0) |
593 | if (rc != 0) |
588 | return (unative_t) rc; |
594 | return (unative_t) rc; |
589 | 595 | ||
590 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
596 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
591 | 597 | ||
592 | if (!(res = request_preprocess(&call, phone))) { |
598 | if (!(res = request_preprocess(&call, phone))) { |
593 | #ifdef CONFIG_UDEBUG |
599 | #ifdef CONFIG_UDEBUG |
594 | udebug_stoppable_begin(); |
600 | udebug_stoppable_begin(); |
595 | #endif |
601 | #endif |
596 | rc = ipc_call_sync(phone, &call); |
602 | rc = ipc_call_sync(phone, &call); |
597 | #ifdef CONFIG_UDEBUG |
603 | #ifdef CONFIG_UDEBUG |
598 | udebug_stoppable_end(); |
604 | udebug_stoppable_end(); |
599 | #endif |
605 | #endif |
600 | if (rc != EOK) |
606 | if (rc != EOK) |
601 | return rc; |
607 | return rc; |
602 | process_answer(&call); |
608 | process_answer(&call); |
603 | } else |
609 | } else |
604 | IPC_SET_RETVAL(call.data, res); |
610 | IPC_SET_RETVAL(call.data, res); |
605 | 611 | ||
606 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
612 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
607 | if (rc != 0) |
613 | if (rc != 0) |
608 | return rc; |
614 | return rc; |
609 | 615 | ||
610 | return 0; |
616 | return 0; |
611 | } |
617 | } |
612 | 618 | ||
613 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
619 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
614 | * |
620 | * |
615 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
621 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
616 | */ |
622 | */ |
617 | static int check_call_limit(void) |
623 | static int check_call_limit(void) |
618 | { |
624 | { |
619 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
625 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
620 | atomic_dec(&TASK->active_calls); |
626 | atomic_dec(&TASK->active_calls); |
621 | return -1; |
627 | return -1; |
622 | } |
628 | } |
623 | return 0; |
629 | return 0; |
624 | } |
630 | } |
625 | 631 | ||
626 | /** Make a fast asynchronous call over IPC. |
632 | /** Make a fast asynchronous call over IPC. |
627 | * |
633 | * |
628 | * This function can only handle four arguments of payload, but is faster than |
634 | * This function can only handle four arguments of payload, but is faster than |
629 | * the generic function sys_ipc_call_async_slow(). |
635 | * the generic function sys_ipc_call_async_slow(). |
630 | * |
636 | * |
631 | * @param phoneid Phone handle for the call. |
637 | * @param phoneid Phone handle for the call. |
632 | * @param method Method of the call. |
638 | * @param method Method of the call. |
633 | * @param arg1 Service-defined payload argument. |
639 | * @param arg1 Service-defined payload argument. |
634 | * @param arg2 Service-defined payload argument. |
640 | * @param arg2 Service-defined payload argument. |
635 | * @param arg3 Service-defined payload argument. |
641 | * @param arg3 Service-defined payload argument. |
636 | * @param arg4 Service-defined payload argument. |
642 | * @param arg4 Service-defined payload argument. |
637 | * |
643 | * |
638 | * @return Return call hash on success. |
644 | * @return Return call hash on success. |
639 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
645 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
640 | * IPC_CALLRET_TEMPORARY if there are too many pending |
646 | * IPC_CALLRET_TEMPORARY if there are too many pending |
641 | * asynchronous requests; answers should be handled first. |
647 | * asynchronous requests; answers should be handled first. |
642 | */ |
648 | */ |
643 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
649 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
644 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
650 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
645 | { |
651 | { |
646 | call_t *call; |
652 | call_t *call; |
647 | phone_t *phone; |
653 | phone_t *phone; |
648 | int res; |
654 | int res; |
649 | 655 | ||
650 | if (check_call_limit()) |
656 | if (check_call_limit()) |
651 | return IPC_CALLRET_TEMPORARY; |
657 | return IPC_CALLRET_TEMPORARY; |
652 | 658 | ||
653 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
659 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
654 | 660 | ||
655 | call = ipc_call_alloc(0); |
661 | call = ipc_call_alloc(0); |
656 | IPC_SET_METHOD(call->data, method); |
662 | IPC_SET_METHOD(call->data, method); |
657 | IPC_SET_ARG1(call->data, arg1); |
663 | IPC_SET_ARG1(call->data, arg1); |
658 | IPC_SET_ARG2(call->data, arg2); |
664 | IPC_SET_ARG2(call->data, arg2); |
659 | IPC_SET_ARG3(call->data, arg3); |
665 | IPC_SET_ARG3(call->data, arg3); |
660 | IPC_SET_ARG4(call->data, arg4); |
666 | IPC_SET_ARG4(call->data, arg4); |
661 | /* |
667 | /* |
662 | * To achieve deterministic behavior, zero out arguments that are beyond |
668 | * To achieve deterministic behavior, zero out arguments that are beyond |
663 | * the limits of the fast version. |
669 | * the limits of the fast version. |
664 | */ |
670 | */ |
665 | IPC_SET_ARG5(call->data, 0); |
671 | IPC_SET_ARG5(call->data, 0); |
666 | 672 | ||
667 | if (!(res = request_preprocess(call, phone))) |
673 | if (!(res = request_preprocess(call, phone))) |
668 | ipc_call(phone, call); |
674 | ipc_call(phone, call); |
669 | else |
675 | else |
670 | ipc_backsend_err(phone, call, res); |
676 | ipc_backsend_err(phone, call, res); |
671 | 677 | ||
672 | return (unative_t) call; |
678 | return (unative_t) call; |
673 | } |
679 | } |
674 | 680 | ||
675 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
681 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
676 | * |
682 | * |
677 | * @param phoneid Phone handle for the call. |
683 | * @param phoneid Phone handle for the call. |
678 | * @param data Userspace address of call data with the request. |
684 | * @param data Userspace address of call data with the request. |
679 | * |
685 | * |
680 | * @return See sys_ipc_call_async_fast(). |
686 | * @return See sys_ipc_call_async_fast(). |
681 | */ |
687 | */ |
682 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
688 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
683 | { |
689 | { |
684 | call_t *call; |
690 | call_t *call; |
685 | phone_t *phone; |
691 | phone_t *phone; |
686 | int res; |
692 | int res; |
687 | int rc; |
693 | int rc; |
688 | 694 | ||
689 | if (check_call_limit()) |
695 | if (check_call_limit()) |
690 | return IPC_CALLRET_TEMPORARY; |
696 | return IPC_CALLRET_TEMPORARY; |
691 | 697 | ||
692 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
698 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
693 | 699 | ||
694 | call = ipc_call_alloc(0); |
700 | call = ipc_call_alloc(0); |
695 | rc = copy_from_uspace(&call->data.args, &data->args, |
701 | rc = copy_from_uspace(&call->data.args, &data->args, |
696 | sizeof(call->data.args)); |
702 | sizeof(call->data.args)); |
697 | if (rc != 0) { |
703 | if (rc != 0) { |
698 | ipc_call_free(call); |
704 | ipc_call_free(call); |
699 | return (unative_t) rc; |
705 | return (unative_t) rc; |
700 | } |
706 | } |
701 | if (!(res = request_preprocess(call, phone))) |
707 | if (!(res = request_preprocess(call, phone))) |
702 | ipc_call(phone, call); |
708 | ipc_call(phone, call); |
703 | else |
709 | else |
704 | ipc_backsend_err(phone, call, res); |
710 | ipc_backsend_err(phone, call, res); |
705 | 711 | ||
706 | return (unative_t) call; |
712 | return (unative_t) call; |
707 | } |
713 | } |
708 | 714 | ||
709 | /** Forward a received call to another destination - common code for both the |
715 | /** Forward a received call to another destination - common code for both the |
710 | * fast and the slow version. |
716 | * fast and the slow version. |
711 | * |
717 | * |
712 | * @param callid Hash of the call to forward. |
718 | * @param callid Hash of the call to forward. |
713 | * @param phoneid Phone handle to use for forwarding. |
719 | * @param phoneid Phone handle to use for forwarding. |
714 | * @param method New method to use for the forwarded call. |
720 | * @param method New method to use for the forwarded call. |
715 | * @param arg1 New value of the first argument for the forwarded call. |
721 | * @param arg1 New value of the first argument for the forwarded call. |
716 | * @param arg2 New value of the second argument for the forwarded call. |
722 | * @param arg2 New value of the second argument for the forwarded call. |
717 | * @param arg3 New value of the third argument for the forwarded call. |
723 | * @param arg3 New value of the third argument for the forwarded call. |
718 | * @param arg4 New value of the fourth argument for the forwarded call. |
724 | * @param arg4 New value of the fourth argument for the forwarded call. |
719 | * @param arg5 New value of the fifth argument for the forwarded call. |
725 | * @param arg5 New value of the fifth argument for the forwarded call. |
720 | * @param mode Flags that specify mode of the forward operation. |
726 | * @param mode Flags that specify mode of the forward operation. |
721 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
727 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
722 | * the function considers only the fast version arguments: |
728 | * the function considers only the fast version arguments: |
723 | * i.e. arg1 and arg2. |
729 | * i.e. arg1 and arg2. |
724 | * |
730 | * |
725 | * @return Return 0 on succes, otherwise return an error code. |
731 | * @return Return 0 on succes, otherwise return an error code. |
726 | * |
732 | * |
727 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
733 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
728 | */ |
734 | */ |
729 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
735 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
730 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
736 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
731 | unative_t arg4, unative_t arg5, int mode, bool slow) |
737 | unative_t arg4, unative_t arg5, int mode, bool slow) |
732 | { |
738 | { |
733 | call_t *call; |
739 | call_t *call; |
734 | phone_t *phone; |
740 | phone_t *phone; |
735 | 741 | ||
736 | call = get_call(callid); |
742 | call = get_call(callid); |
737 | if (!call) |
743 | if (!call) |
738 | return ENOENT; |
744 | return ENOENT; |
739 | 745 | ||
740 | call->flags |= IPC_CALL_FORWARDED; |
746 | call->flags |= IPC_CALL_FORWARDED; |
741 | 747 | ||
742 | GET_CHECK_PHONE(phone, phoneid, { |
748 | GET_CHECK_PHONE(phone, phoneid, { |
743 | IPC_SET_RETVAL(call->data, EFORWARD); |
749 | IPC_SET_RETVAL(call->data, EFORWARD); |
744 | ipc_answer(&TASK->answerbox, call); |
750 | ipc_answer(&TASK->answerbox, call); |
745 | return ENOENT; |
751 | return ENOENT; |
746 | }); |
752 | }); |
747 | 753 | ||
748 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
754 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
749 | IPC_SET_RETVAL(call->data, EFORWARD); |
755 | IPC_SET_RETVAL(call->data, EFORWARD); |
750 | ipc_answer(&TASK->answerbox, call); |
756 | ipc_answer(&TASK->answerbox, call); |
751 | return EPERM; |
757 | return EPERM; |
752 | } |
758 | } |
753 | 759 | ||
754 | /* |
760 | /* |
755 | * Userspace is not allowed to change method of system methods on |
761 | * Userspace is not allowed to change method of system methods on |
756 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
762 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
757 | * arg1, arg2 and arg3. |
763 | * arg1, arg2 and arg3. |
758 | * If the method is immutable, don't change anything. |
764 | * If the method is immutable, don't change anything. |
759 | */ |
765 | */ |
760 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
766 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
761 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
767 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
762 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
768 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
763 | phone_dealloc(IPC_GET_ARG5(call->data)); |
769 | phone_dealloc(IPC_GET_ARG5(call->data)); |
764 | 770 | ||
765 | IPC_SET_ARG1(call->data, method); |
771 | IPC_SET_ARG1(call->data, method); |
766 | IPC_SET_ARG2(call->data, arg1); |
772 | IPC_SET_ARG2(call->data, arg1); |
767 | IPC_SET_ARG3(call->data, arg2); |
773 | IPC_SET_ARG3(call->data, arg2); |
768 | if (slow) { |
774 | if (slow) { |
769 | IPC_SET_ARG4(call->data, arg3); |
775 | IPC_SET_ARG4(call->data, arg3); |
770 | /* |
776 | /* |
771 | * For system methods we deliberately don't |
777 | * For system methods we deliberately don't |
772 | * overwrite ARG5. |
778 | * overwrite ARG5. |
773 | */ |
779 | */ |
774 | } |
780 | } |
775 | } else { |
781 | } else { |
776 | IPC_SET_METHOD(call->data, method); |
782 | IPC_SET_METHOD(call->data, method); |
777 | IPC_SET_ARG1(call->data, arg1); |
783 | IPC_SET_ARG1(call->data, arg1); |
778 | IPC_SET_ARG2(call->data, arg2); |
784 | IPC_SET_ARG2(call->data, arg2); |
779 | if (slow) { |
785 | if (slow) { |
780 | IPC_SET_ARG3(call->data, arg3); |
786 | IPC_SET_ARG3(call->data, arg3); |
781 | IPC_SET_ARG4(call->data, arg4); |
787 | IPC_SET_ARG4(call->data, arg4); |
782 | IPC_SET_ARG5(call->data, arg5); |
788 | IPC_SET_ARG5(call->data, arg5); |
783 | } |
789 | } |
784 | } |
790 | } |
785 | } |
791 | } |
786 | 792 | ||
787 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
793 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
788 | } |
794 | } |
789 | 795 | ||
790 | /** Forward a received call to another destination - fast version. |
796 | /** Forward a received call to another destination - fast version. |
791 | * |
797 | * |
792 | * @param callid Hash of the call to forward. |
798 | * @param callid Hash of the call to forward. |
793 | * @param phoneid Phone handle to use for forwarding. |
799 | * @param phoneid Phone handle to use for forwarding. |
794 | * @param method New method to use for the forwarded call. |
800 | * @param method New method to use for the forwarded call. |
795 | * @param arg1 New value of the first argument for the forwarded call. |
801 | * @param arg1 New value of the first argument for the forwarded call. |
796 | * @param arg2 New value of the second argument for the forwarded call. |
802 | * @param arg2 New value of the second argument for the forwarded call. |
797 | * @param mode Flags that specify mode of the forward operation. |
803 | * @param mode Flags that specify mode of the forward operation. |
798 | * |
804 | * |
799 | * @return Return 0 on succes, otherwise return an error code. |
805 | * @return Return 0 on succes, otherwise return an error code. |
800 | * |
806 | * |
801 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
807 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
802 | * overwritten in the forwarded message with the new method and the new |
808 | * overwritten in the forwarded message with the new method and the new |
803 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
809 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
804 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
810 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
805 | * is a set of immutable methods, for which the new method and arguments are not |
811 | * is a set of immutable methods, for which the new method and arguments are not |
806 | * set and these values are ignored. |
812 | * set and these values are ignored. |
807 | */ |
813 | */ |
808 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
814 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
809 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
815 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
810 | { |
816 | { |
811 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
817 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
812 | 0, mode, false); |
818 | 0, mode, false); |
813 | } |
819 | } |
814 | 820 | ||
815 | /** Forward a received call to another destination - slow version. |
821 | /** Forward a received call to another destination - slow version. |
816 | * |
822 | * |
817 | * @param callid Hash of the call to forward. |
823 | * @param callid Hash of the call to forward. |
818 | * @param phoneid Phone handle to use for forwarding. |
824 | * @param phoneid Phone handle to use for forwarding. |
819 | * @param data Userspace address of the new IPC data. |
825 | * @param data Userspace address of the new IPC data. |
820 | * @param mode Flags that specify mode of the forward operation. |
826 | * @param mode Flags that specify mode of the forward operation. |
821 | * |
827 | * |
822 | * @return Return 0 on succes, otherwise return an error code. |
828 | * @return Return 0 on succes, otherwise return an error code. |
823 | * |
829 | * |
824 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
830 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
825 | * It can copy all five new arguments and the new method from the userspace. |
831 | * It can copy all five new arguments and the new method from the userspace. |
826 | * It naturally extends the functionality of the fast version. For system |
832 | * It naturally extends the functionality of the fast version. For system |
827 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
833 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
828 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
834 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
829 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
835 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
830 | */ |
836 | */ |
831 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
837 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
832 | ipc_data_t *data, int mode) |
838 | ipc_data_t *data, int mode) |
833 | { |
839 | { |
834 | ipc_data_t newdata; |
840 | ipc_data_t newdata; |
835 | int rc; |
841 | int rc; |
836 | 842 | ||
837 | rc = copy_from_uspace(&newdata.args, &data->args, |
843 | rc = copy_from_uspace(&newdata.args, &data->args, |
838 | sizeof(newdata.args)); |
844 | sizeof(newdata.args)); |
839 | if (rc != 0) |
845 | if (rc != 0) |
840 | return (unative_t) rc; |
846 | return (unative_t) rc; |
841 | 847 | ||
842 | return sys_ipc_forward_common(callid, phoneid, |
848 | return sys_ipc_forward_common(callid, phoneid, |
843 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
849 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
844 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
850 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
845 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
851 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
846 | } |
852 | } |
847 | 853 | ||
848 | /** Answer an IPC call - fast version. |
854 | /** Answer an IPC call - fast version. |
849 | * |
855 | * |
850 | * This function can handle only two return arguments of payload, but is faster |
856 | * This function can handle only two return arguments of payload, but is faster |
851 | * than the generic sys_ipc_answer(). |
857 | * than the generic sys_ipc_answer(). |
852 | * |
858 | * |
853 | * @param callid Hash of the call to be answered. |
859 | * @param callid Hash of the call to be answered. |
854 | * @param retval Return value of the answer. |
860 | * @param retval Return value of the answer. |
855 | * @param arg1 Service-defined return value. |
861 | * @param arg1 Service-defined return value. |
856 | * @param arg2 Service-defined return value. |
862 | * @param arg2 Service-defined return value. |
857 | * @param arg3 Service-defined return value. |
863 | * @param arg3 Service-defined return value. |
858 | * @param arg4 Service-defined return value. |
864 | * @param arg4 Service-defined return value. |
859 | * |
865 | * |
860 | * @return Return 0 on success, otherwise return an error code. |
866 | * @return Return 0 on success, otherwise return an error code. |
861 | */ |
867 | */ |
862 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
868 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
863 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
869 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
864 | { |
870 | { |
865 | call_t *call; |
871 | call_t *call; |
866 | ipc_data_t saved_data; |
872 | ipc_data_t saved_data; |
867 | int saveddata = 0; |
873 | int saveddata = 0; |
868 | int rc; |
874 | int rc; |
869 | 875 | ||
870 | /* Do not answer notification callids */ |
876 | /* Do not answer notification callids */ |
871 | if (callid & IPC_CALLID_NOTIFICATION) |
877 | if (callid & IPC_CALLID_NOTIFICATION) |
872 | return 0; |
878 | return 0; |
873 | 879 | ||
874 | call = get_call(callid); |
880 | call = get_call(callid); |
875 | if (!call) |
881 | if (!call) |
876 | return ENOENT; |
882 | return ENOENT; |
877 | 883 | ||
878 | if (answer_need_old(call)) { |
884 | if (answer_need_old(call)) { |
879 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
885 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
880 | saveddata = 1; |
886 | saveddata = 1; |
881 | } |
887 | } |
882 | 888 | ||
883 | IPC_SET_RETVAL(call->data, retval); |
889 | IPC_SET_RETVAL(call->data, retval); |
884 | IPC_SET_ARG1(call->data, arg1); |
890 | IPC_SET_ARG1(call->data, arg1); |
885 | IPC_SET_ARG2(call->data, arg2); |
891 | IPC_SET_ARG2(call->data, arg2); |
886 | IPC_SET_ARG3(call->data, arg3); |
892 | IPC_SET_ARG3(call->data, arg3); |
887 | IPC_SET_ARG4(call->data, arg4); |
893 | IPC_SET_ARG4(call->data, arg4); |
888 | /* |
894 | /* |
889 | * To achieve deterministic behavior, zero out arguments that are beyond |
895 | * To achieve deterministic behavior, zero out arguments that are beyond |
890 | * the limits of the fast version. |
896 | * the limits of the fast version. |
891 | */ |
897 | */ |
892 | IPC_SET_ARG5(call->data, 0); |
898 | IPC_SET_ARG5(call->data, 0); |
893 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
899 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
894 | 900 | ||
895 | ipc_answer(&TASK->answerbox, call); |
901 | ipc_answer(&TASK->answerbox, call); |
896 | return rc; |
902 | return rc; |
897 | } |
903 | } |
898 | 904 | ||
899 | /** Answer an IPC call. |
905 | /** Answer an IPC call. |
900 | * |
906 | * |
901 | * @param callid Hash of the call to be answered. |
907 | * @param callid Hash of the call to be answered. |
902 | * @param data Userspace address of call data with the answer. |
908 | * @param data Userspace address of call data with the answer. |
903 | * |
909 | * |
904 | * @return Return 0 on success, otherwise return an error code. |
910 | * @return Return 0 on success, otherwise return an error code. |
905 | */ |
911 | */ |
906 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
912 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
907 | { |
913 | { |
908 | call_t *call; |
914 | call_t *call; |
909 | ipc_data_t saved_data; |
915 | ipc_data_t saved_data; |
910 | int saveddata = 0; |
916 | int saveddata = 0; |
911 | int rc; |
917 | int rc; |
912 | 918 | ||
913 | /* Do not answer notification callids */ |
919 | /* Do not answer notification callids */ |
914 | if (callid & IPC_CALLID_NOTIFICATION) |
920 | if (callid & IPC_CALLID_NOTIFICATION) |
915 | return 0; |
921 | return 0; |
916 | 922 | ||
917 | call = get_call(callid); |
923 | call = get_call(callid); |
918 | if (!call) |
924 | if (!call) |
919 | return ENOENT; |
925 | return ENOENT; |
920 | 926 | ||
921 | if (answer_need_old(call)) { |
927 | if (answer_need_old(call)) { |
922 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
928 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
923 | saveddata = 1; |
929 | saveddata = 1; |
924 | } |
930 | } |
925 | rc = copy_from_uspace(&call->data.args, &data->args, |
931 | rc = copy_from_uspace(&call->data.args, &data->args, |
926 | sizeof(call->data.args)); |
932 | sizeof(call->data.args)); |
927 | if (rc != 0) |
933 | if (rc != 0) |
928 | return rc; |
934 | return rc; |
929 | 935 | ||
930 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
936 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
931 | 937 | ||
932 | ipc_answer(&TASK->answerbox, call); |
938 | ipc_answer(&TASK->answerbox, call); |
933 | 939 | ||
934 | return rc; |
940 | return rc; |
935 | } |
941 | } |
936 | 942 | ||
937 | /** Hang up a phone. |
943 | /** Hang up a phone. |
938 | * |
944 | * |
939 | * @param Phone handle of the phone to be hung up. |
945 | * @param Phone handle of the phone to be hung up. |
940 | * |
946 | * |
941 | * @return Return 0 on success or an error code. |
947 | * @return Return 0 on success or an error code. |
942 | */ |
948 | */ |
943 | unative_t sys_ipc_hangup(int phoneid) |
949 | unative_t sys_ipc_hangup(int phoneid) |
944 | { |
950 | { |
945 | phone_t *phone; |
951 | phone_t *phone; |
946 | 952 | ||
947 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
953 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
948 | 954 | ||
949 | if (ipc_phone_hangup(phone)) |
955 | if (ipc_phone_hangup(phone)) |
950 | return -1; |
956 | return -1; |
951 | 957 | ||
952 | return 0; |
958 | return 0; |
953 | } |
959 | } |
954 | 960 | ||
955 | /** Wait for an incoming IPC call or an answer. |
961 | /** Wait for an incoming IPC call or an answer. |
956 | * |
962 | * |
957 | * @param calldata Pointer to buffer where the call/answer data is stored. |
963 | * @param calldata Pointer to buffer where the call/answer data is stored. |
958 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
964 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
959 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
965 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
960 | * for explanation. |
966 | * for explanation. |
961 | * |
967 | * |
962 | * @return Hash of the call. |
968 | * @return Hash of the call. |
963 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
969 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
964 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
970 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
965 | * answer. |
971 | * answer. |
966 | */ |
972 | */ |
967 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
973 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
968 | { |
974 | { |
969 | call_t *call; |
975 | call_t *call; |
970 | 976 | ||
971 | restart: |
977 | restart: |
972 | 978 | ||
973 | #ifdef CONFIG_UDEBUG |
979 | #ifdef CONFIG_UDEBUG |
974 | udebug_stoppable_begin(); |
980 | udebug_stoppable_begin(); |
975 | #endif |
981 | #endif |
976 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
982 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
977 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
983 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
978 | 984 | ||
979 | #ifdef CONFIG_UDEBUG |
985 | #ifdef CONFIG_UDEBUG |
980 | udebug_stoppable_end(); |
986 | udebug_stoppable_end(); |
981 | #endif |
987 | #endif |
982 | if (!call) |
988 | if (!call) |
983 | return 0; |
989 | return 0; |
984 | 990 | ||
985 | if (call->flags & IPC_CALL_NOTIF) { |
991 | if (call->flags & IPC_CALL_NOTIF) { |
986 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
992 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
987 | 993 | ||
988 | /* Set in_phone_hash to the interrupt counter */ |
994 | /* Set in_phone_hash to the interrupt counter */ |
989 | call->data.phone = (void *) call->priv; |
995 | call->data.phone = (void *) call->priv; |
990 | 996 | ||
991 | STRUCT_TO_USPACE(calldata, &call->data); |
997 | STRUCT_TO_USPACE(calldata, &call->data); |
992 | 998 | ||
993 | ipc_call_free(call); |
999 | ipc_call_free(call); |
994 | 1000 | ||
995 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
1001 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
996 | } |
1002 | } |
997 | 1003 | ||
998 | if (call->flags & IPC_CALL_ANSWERED) { |
1004 | if (call->flags & IPC_CALL_ANSWERED) { |
999 | process_answer(call); |
1005 | process_answer(call); |
1000 | 1006 | ||
1001 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
1007 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
1002 | 1008 | ||
1003 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
1009 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
1004 | ipc_call_free(call); |
1010 | ipc_call_free(call); |
1005 | goto restart; |
1011 | goto restart; |
1006 | } else { |
1012 | } else { |
1007 | /* |
1013 | /* |
1008 | * Decrement the counter of active calls only if the |
1014 | * Decrement the counter of active calls only if the |
1009 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
1015 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
1010 | * which doesn't contribute to the counter. |
1016 | * which doesn't contribute to the counter. |
1011 | */ |
1017 | */ |
1012 | atomic_dec(&TASK->active_calls); |
1018 | atomic_dec(&TASK->active_calls); |
1013 | } |
1019 | } |
1014 | 1020 | ||
1015 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
1021 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
1016 | ipc_call_free(call); |
1022 | ipc_call_free(call); |
1017 | 1023 | ||
1018 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
1024 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
1019 | } |
1025 | } |
1020 | 1026 | ||
1021 | if (process_request(&TASK->answerbox, call)) |
1027 | if (process_request(&TASK->answerbox, call)) |
1022 | goto restart; |
1028 | goto restart; |
1023 | 1029 | ||
1024 | /* Include phone address('id') of the caller in the request, |
1030 | /* Include phone address('id') of the caller in the request, |
1025 | * copy whole call->data, not only call->data.args */ |
1031 | * copy whole call->data, not only call->data.args */ |
1026 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
1032 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
1027 | /* |
1033 | /* |
1028 | * The callee will not receive this call and no one else has |
1034 | * The callee will not receive this call and no one else has |
1029 | * a chance to answer it. Reply with the EPARTY error code. |
1035 | * a chance to answer it. Reply with the EPARTY error code. |
1030 | */ |
1036 | */ |
1031 | ipc_data_t saved_data; |
1037 | ipc_data_t saved_data; |
1032 | int saveddata = 0; |
1038 | int saveddata = 0; |
1033 | 1039 | ||
1034 | if (answer_need_old(call)) { |
1040 | if (answer_need_old(call)) { |
1035 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
1041 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
1036 | saveddata = 1; |
1042 | saveddata = 1; |
1037 | } |
1043 | } |
1038 | 1044 | ||
1039 | IPC_SET_RETVAL(call->data, EPARTY); |
1045 | IPC_SET_RETVAL(call->data, EPARTY); |
1040 | (void) answer_preprocess(call, saveddata ? &saved_data : NULL); |
1046 | (void) answer_preprocess(call, saveddata ? &saved_data : NULL); |
1041 | ipc_answer(&TASK->answerbox, call); |
1047 | ipc_answer(&TASK->answerbox, call); |
1042 | return 0; |
1048 | return 0; |
1043 | } |
1049 | } |
1044 | return (unative_t)call; |
1050 | return (unative_t)call; |
1045 | } |
1051 | } |
1046 | 1052 | ||
1047 | /** Connect an IRQ handler to a task. |
1053 | /** Connect an IRQ handler to a task. |
1048 | * |
1054 | * |
1049 | * @param inr IRQ number. |
1055 | * @param inr IRQ number. |
1050 | * @param devno Device number. |
1056 | * @param devno Device number. |
1051 | * @param method Method to be associated with the notification. |
1057 | * @param method Method to be associated with the notification. |
1052 | * @param ucode Uspace pointer to the top-half pseudocode. |
1058 | * @param ucode Uspace pointer to the top-half pseudocode. |
1053 | * |
1059 | * |
1054 | * @return EPERM or a return code returned by ipc_irq_register(). |
1060 | * @return EPERM or a return code returned by ipc_irq_register(). |
1055 | */ |
1061 | */ |
1056 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
1062 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
1057 | irq_code_t *ucode) |
1063 | irq_code_t *ucode) |
1058 | { |
1064 | { |
1059 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1065 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1060 | return EPERM; |
1066 | return EPERM; |
1061 | 1067 | ||
1062 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
1068 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
1063 | } |
1069 | } |
1064 | 1070 | ||
1065 | /** Disconnect an IRQ handler from a task. |
1071 | /** Disconnect an IRQ handler from a task. |
1066 | * |
1072 | * |
1067 | * @param inr IRQ number. |
1073 | * @param inr IRQ number. |
1068 | * @param devno Device number. |
1074 | * @param devno Device number. |
1069 | * |
1075 | * |
1070 | * @return Zero on success or EPERM on error.. |
1076 | * @return Zero on success or EPERM on error.. |
1071 | */ |
1077 | */ |
1072 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
1078 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
1073 | { |
1079 | { |
1074 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1080 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1075 | return EPERM; |
1081 | return EPERM; |
1076 | 1082 | ||
1077 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
1083 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
1078 | 1084 | ||
1079 | return 0; |
1085 | return 0; |
1080 | } |
1086 | } |
1081 | 1087 | ||
1082 | #include <console/console.h> |
1088 | #include <console/console.h> |
1083 | 1089 | ||
1084 | /** |
1090 | /** |
1085 | * Syscall connect to a task by id. |
1091 | * Syscall connect to a task by id. |
1086 | * |
1092 | * |
1087 | * @return Phone id on success, or negative error code. |
1093 | * @return Phone id on success, or negative error code. |
1088 | */ |
1094 | */ |
1089 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
1095 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
1090 | { |
1096 | { |
1091 | #ifdef CONFIG_UDEBUG |
1097 | #ifdef CONFIG_UDEBUG |
1092 | sysarg64_t taskid_arg; |
1098 | sysarg64_t taskid_arg; |
1093 | int rc; |
1099 | int rc; |
1094 | 1100 | ||
1095 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
1101 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
1096 | if (rc != 0) |
1102 | if (rc != 0) |
1097 | return (unative_t) rc; |
1103 | return (unative_t) rc; |
1098 | 1104 | ||
1099 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
1105 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
1100 | 1106 | ||
1101 | return ipc_connect_kbox(taskid_arg.value); |
1107 | return ipc_connect_kbox(taskid_arg.value); |
1102 | #else |
1108 | #else |
1103 | return (unative_t) ENOTSUP; |
1109 | return (unative_t) ENOTSUP; |
1104 | #endif |
1110 | #endif |
1105 | } |
1111 | } |
1106 | 1112 | ||
1107 | /** @} |
1113 | /** @} |
1108 | */ |
1114 | */ |
1109 | 1115 |