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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 <arch/interrupt.h> |
45 | #include <arch/interrupt.h> |
46 | #include <print.h> |
46 | #include <print.h> |
47 | #include <syscall/copy.h> |
47 | #include <syscall/copy.h> |
48 | #include <security/cap.h> |
48 | #include <security/cap.h> |
49 | #include <mm/as.h> |
49 | #include <mm/as.h> |
50 | #include <print.h> |
50 | #include <print.h> |
51 | 51 | ||
52 | /** |
52 | /** |
53 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
53 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
54 | * requests. |
54 | * requests. |
55 | */ |
55 | */ |
56 | #define DATA_XFER_LIMIT (64 * 1024) |
56 | #define DATA_XFER_LIMIT (64 * 1024) |
57 | 57 | ||
58 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
58 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
59 | { \ |
59 | { \ |
60 | if (phoneid > IPC_MAX_PHONES) { \ |
60 | if (phoneid > IPC_MAX_PHONES) { \ |
61 | err; \ |
61 | err; \ |
62 | } \ |
62 | } \ |
63 | phone = &TASK->phones[phoneid]; \ |
63 | phone = &TASK->phones[phoneid]; \ |
64 | } |
64 | } |
65 | 65 | ||
66 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
66 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
67 | 67 | ||
68 | /** Decide if the method is a system method. |
68 | /** Decide if the method is a system method. |
69 | * |
69 | * |
70 | * @param method Method to be decided. |
70 | * @param method Method to be decided. |
71 | * |
71 | * |
72 | * @return Return 1 if the method is a system method. |
72 | * @return Return 1 if the method is a system method. |
73 | * Otherwise return 0. |
73 | * Otherwise return 0. |
74 | */ |
74 | */ |
75 | static inline int method_is_system(unative_t method) |
75 | static inline int method_is_system(unative_t method) |
76 | { |
76 | { |
77 | if (method <= IPC_M_LAST_SYSTEM) |
77 | if (method <= IPC_M_LAST_SYSTEM) |
78 | return 1; |
78 | return 1; |
79 | return 0; |
79 | return 0; |
80 | } |
80 | } |
81 | 81 | ||
82 | /** Decide if the message with this method is forwardable. |
82 | /** Decide if the message with this method is forwardable. |
83 | * |
83 | * |
84 | * - some system messages may be forwarded, for some of them |
84 | * - some system messages may be forwarded, for some of them |
85 | * it is useless |
85 | * it is useless |
86 | * |
86 | * |
87 | * @param method Method to be decided. |
87 | * @param method Method to be decided. |
88 | * |
88 | * |
89 | * @return Return 1 if the method is forwardable. |
89 | * @return Return 1 if the method is forwardable. |
90 | * Otherwise return 0. |
90 | * Otherwise return 0. |
91 | */ |
91 | */ |
92 | static inline int method_is_forwardable(unative_t method) |
92 | static inline int method_is_forwardable(unative_t method) |
93 | { |
93 | { |
94 | switch (method) { |
94 | switch (method) { |
95 | case IPC_M_PHONE_HUNGUP: |
95 | case IPC_M_PHONE_HUNGUP: |
96 | /* This message is meant only for the original recipient. */ |
96 | /* This message is meant only for the original recipient. */ |
97 | return 0; |
97 | return 0; |
98 | default: |
98 | default: |
99 | return 1; |
99 | return 1; |
100 | } |
100 | } |
101 | } |
101 | } |
102 | 102 | ||
103 | /** Decide if the message with this method is immutable on forward. |
103 | /** Decide if the message with this method is immutable on forward. |
104 | * |
104 | * |
105 | * - some system messages may be forwarded but their content cannot be altered |
105 | * - some system messages may be forwarded but their content cannot be altered |
106 | * |
106 | * |
107 | * @param method Method to be decided. |
107 | * @param method Method to be decided. |
108 | * |
108 | * |
109 | * @return Return 1 if the method is immutable on forward. |
109 | * @return Return 1 if the method is immutable on forward. |
110 | * Otherwise return 0. |
110 | * Otherwise return 0. |
111 | */ |
111 | */ |
112 | static inline int method_is_immutable(unative_t method) |
112 | static inline int method_is_immutable(unative_t method) |
113 | { |
113 | { |
114 | switch (method) { |
114 | switch (method) { |
115 | case IPC_M_SHARE_OUT: |
115 | case IPC_M_SHARE_OUT: |
116 | case IPC_M_SHARE_IN: |
116 | case IPC_M_SHARE_IN: |
117 | case IPC_M_DATA_WRITE: |
117 | case IPC_M_DATA_WRITE: |
118 | case IPC_M_DATA_READ: |
118 | case IPC_M_DATA_READ: |
119 | return 1; |
119 | return 1; |
120 | break; |
120 | break; |
121 | default: |
121 | default: |
122 | return 0; |
122 | return 0; |
123 | } |
123 | } |
124 | } |
124 | } |
125 | 125 | ||
126 | 126 | ||
127 | /*********************************************************************** |
127 | /*********************************************************************** |
128 | * Functions that preprocess answer before sending it to the recepient. |
128 | * Functions that preprocess answer before sending it to the recepient. |
129 | ***********************************************************************/ |
129 | ***********************************************************************/ |
130 | 130 | ||
131 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
131 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
132 | * for answer_preprocess(). |
132 | * for answer_preprocess(). |
133 | * |
133 | * |
134 | * @param call Call structure to be decided. |
134 | * @param call Call structure to be decided. |
135 | * |
135 | * |
136 | * @return Return 1 if the old call contents should be saved. |
136 | * @return Return 1 if the old call contents should be saved. |
137 | * Return 0 otherwise. |
137 | * Return 0 otherwise. |
138 | */ |
138 | */ |
139 | static inline int answer_need_old(call_t *call) |
139 | static inline int answer_need_old(call_t *call) |
140 | { |
140 | { |
141 | switch (IPC_GET_METHOD(call->data)) { |
141 | switch (IPC_GET_METHOD(call->data)) { |
142 | case IPC_M_CONNECT_TO_ME: |
142 | case IPC_M_CONNECT_TO_ME: |
143 | case IPC_M_CONNECT_ME_TO: |
143 | case IPC_M_CONNECT_ME_TO: |
144 | case IPC_M_SHARE_OUT: |
144 | case IPC_M_SHARE_OUT: |
145 | case IPC_M_SHARE_IN: |
145 | case IPC_M_SHARE_IN: |
146 | case IPC_M_DATA_WRITE: |
146 | case IPC_M_DATA_WRITE: |
147 | case IPC_M_DATA_READ: |
147 | case IPC_M_DATA_READ: |
148 | return 1; |
148 | return 1; |
149 | default: |
149 | default: |
150 | return 0; |
150 | return 0; |
151 | } |
151 | } |
152 | } |
152 | } |
153 | 153 | ||
154 | /** Interpret process answer as control information. |
154 | /** Interpret process answer as control information. |
155 | * |
155 | * |
156 | * This function is called directly after sys_ipc_answer(). |
156 | * This function is called directly after sys_ipc_answer(). |
157 | * |
157 | * |
158 | * @param answer Call structure with the answer. |
158 | * @param answer Call structure with the answer. |
159 | * @param olddata Saved data of the request. |
159 | * @param olddata Saved data of the request. |
160 | * |
160 | * |
161 | * @return Return 0 on success or an error code. |
161 | * @return Return 0 on success or an error code. |
162 | */ |
162 | */ |
163 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
163 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
164 | { |
164 | { |
165 | int phoneid; |
165 | int phoneid; |
166 | 166 | ||
167 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
167 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
168 | /* In case of forward, hangup the forwared phone, |
168 | /* In case of forward, hangup the forwared phone, |
169 | * not the originator |
169 | * not the originator |
170 | */ |
170 | */ |
171 | spinlock_lock(&answer->data.phone->lock); |
171 | spinlock_lock(&answer->data.phone->lock); |
172 | spinlock_lock(&TASK->answerbox.lock); |
172 | spinlock_lock(&TASK->answerbox.lock); |
173 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
173 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
174 | list_remove(&answer->data.phone->link); |
174 | list_remove(&answer->data.phone->link); |
175 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
175 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
176 | } |
176 | } |
177 | spinlock_unlock(&TASK->answerbox.lock); |
177 | spinlock_unlock(&TASK->answerbox.lock); |
178 | spinlock_unlock(&answer->data.phone->lock); |
178 | spinlock_unlock(&answer->data.phone->lock); |
179 | } |
179 | } |
180 | 180 | ||
181 | if (!olddata) |
181 | if (!olddata) |
182 | return 0; |
182 | return 0; |
183 | 183 | ||
184 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
184 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
185 | phoneid = IPC_GET_ARG5(*olddata); |
185 | phoneid = IPC_GET_ARG5(*olddata); |
186 | if (IPC_GET_RETVAL(answer->data)) { |
186 | if (IPC_GET_RETVAL(answer->data)) { |
187 | /* The connection was not accepted */ |
187 | /* The connection was not accepted */ |
188 | phone_dealloc(phoneid); |
188 | phone_dealloc(phoneid); |
189 | } else { |
189 | } else { |
190 | /* The connection was accepted */ |
190 | /* The connection was accepted */ |
191 | phone_connect(phoneid, &answer->sender->answerbox); |
191 | phone_connect(phoneid, &answer->sender->answerbox); |
192 | /* Set 'phone hash' as arg5 of response */ |
192 | /* Set 'phone hash' as arg5 of response */ |
193 | IPC_SET_ARG5(answer->data, |
193 | IPC_SET_ARG5(answer->data, |
194 | (unative_t) &TASK->phones[phoneid]); |
194 | (unative_t) &TASK->phones[phoneid]); |
195 | } |
195 | } |
196 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
196 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
197 | /* If the users accepted call, connect */ |
197 | /* If the users accepted call, connect */ |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
199 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
199 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
200 | &TASK->answerbox); |
200 | &TASK->answerbox); |
201 | } |
201 | } |
202 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
202 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
203 | if (!IPC_GET_RETVAL(answer->data)) { |
203 | if (!IPC_GET_RETVAL(answer->data)) { |
204 | /* Accepted, handle as_area receipt */ |
204 | /* Accepted, handle as_area receipt */ |
205 | ipl_t ipl; |
205 | ipl_t ipl; |
206 | int rc; |
206 | int rc; |
207 | as_t *as; |
207 | as_t *as; |
208 | 208 | ||
209 | ipl = interrupts_disable(); |
209 | ipl = interrupts_disable(); |
210 | spinlock_lock(&answer->sender->lock); |
210 | spinlock_lock(&answer->sender->lock); |
211 | as = answer->sender->as; |
211 | as = answer->sender->as; |
212 | spinlock_unlock(&answer->sender->lock); |
212 | spinlock_unlock(&answer->sender->lock); |
213 | interrupts_restore(ipl); |
213 | interrupts_restore(ipl); |
214 | 214 | ||
215 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
215 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
216 | IPC_GET_ARG2(*olddata), AS, |
216 | IPC_GET_ARG2(*olddata), AS, |
217 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
217 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
218 | IPC_SET_RETVAL(answer->data, rc); |
218 | IPC_SET_RETVAL(answer->data, rc); |
219 | return rc; |
219 | return rc; |
220 | } |
220 | } |
221 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
221 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
222 | if (!IPC_GET_RETVAL(answer->data)) { |
222 | if (!IPC_GET_RETVAL(answer->data)) { |
223 | ipl_t ipl; |
223 | ipl_t ipl; |
224 | as_t *as; |
224 | as_t *as; |
225 | int rc; |
225 | int rc; |
226 | 226 | ||
227 | ipl = interrupts_disable(); |
227 | ipl = interrupts_disable(); |
228 | spinlock_lock(&answer->sender->lock); |
228 | spinlock_lock(&answer->sender->lock); |
229 | as = answer->sender->as; |
229 | as = answer->sender->as; |
230 | spinlock_unlock(&answer->sender->lock); |
230 | spinlock_unlock(&answer->sender->lock); |
231 | interrupts_restore(ipl); |
231 | interrupts_restore(ipl); |
232 | 232 | ||
233 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
233 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
234 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
234 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
235 | IPC_GET_ARG2(answer->data)); |
235 | IPC_GET_ARG2(answer->data)); |
236 | IPC_SET_RETVAL(answer->data, rc); |
236 | IPC_SET_RETVAL(answer->data, rc); |
237 | } |
237 | } |
238 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
238 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
239 | ASSERT(!answer->buffer); |
239 | ASSERT(!answer->buffer); |
240 | if (!IPC_GET_RETVAL(answer->data)) { |
240 | if (!IPC_GET_RETVAL(answer->data)) { |
241 | /* The recipient agreed to send data. */ |
241 | /* The recipient agreed to send data. */ |
242 | uintptr_t src = IPC_GET_ARG1(answer->data); |
242 | uintptr_t src = IPC_GET_ARG1(answer->data); |
243 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
243 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
244 | size_t max_size = IPC_GET_ARG2(*olddata); |
244 | size_t max_size = IPC_GET_ARG2(*olddata); |
245 | size_t size = IPC_GET_ARG2(answer->data); |
245 | size_t size = IPC_GET_ARG2(answer->data); |
246 | if (size <= max_size) { |
246 | if (size <= max_size) { |
247 | /* |
247 | /* |
248 | * Copy the destination VA so that this piece of |
248 | * Copy the destination VA so that this piece of |
249 | * information is not lost. |
249 | * information is not lost. |
250 | */ |
250 | */ |
251 | IPC_SET_ARG1(answer->data, dst); |
251 | IPC_SET_ARG1(answer->data, dst); |
252 | 252 | ||
253 | answer->buffer = malloc(size, 0); |
253 | answer->buffer = malloc(size, 0); |
254 | int rc = copy_from_uspace(answer->buffer, |
254 | int rc = copy_from_uspace(answer->buffer, |
255 | (void *) src, size); |
255 | (void *) src, size); |
256 | if (rc) { |
256 | if (rc) { |
257 | IPC_SET_RETVAL(answer->data, rc); |
257 | IPC_SET_RETVAL(answer->data, rc); |
258 | free(answer->buffer); |
258 | free(answer->buffer); |
259 | answer->buffer = NULL; |
259 | answer->buffer = NULL; |
260 | } |
260 | } |
261 | } else { |
261 | } else { |
262 | IPC_SET_RETVAL(answer->data, ELIMIT); |
262 | IPC_SET_RETVAL(answer->data, ELIMIT); |
263 | } |
263 | } |
264 | } |
264 | } |
265 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
265 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
266 | ASSERT(answer->buffer); |
266 | ASSERT(answer->buffer); |
267 | if (!IPC_GET_RETVAL(answer->data)) { |
267 | if (!IPC_GET_RETVAL(answer->data)) { |
268 | /* The recipient agreed to receive data. */ |
268 | /* The recipient agreed to receive data. */ |
269 | int rc; |
269 | int rc; |
270 | uintptr_t dst; |
270 | uintptr_t dst; |
271 | uintptr_t size; |
271 | uintptr_t size; |
272 | uintptr_t max_size; |
272 | uintptr_t max_size; |
273 | 273 | ||
274 | dst = IPC_GET_ARG1(answer->data); |
274 | dst = IPC_GET_ARG1(answer->data); |
275 | size = IPC_GET_ARG2(answer->data); |
275 | size = IPC_GET_ARG2(answer->data); |
276 | max_size = IPC_GET_ARG2(*olddata); |
276 | max_size = IPC_GET_ARG2(*olddata); |
277 | 277 | ||
278 | if (size <= max_size) { |
278 | if (size <= max_size) { |
279 | rc = copy_to_uspace((void *) dst, |
279 | rc = copy_to_uspace((void *) dst, |
280 | answer->buffer, size); |
280 | answer->buffer, size); |
281 | if (rc) |
281 | if (rc) |
282 | IPC_SET_RETVAL(answer->data, rc); |
282 | IPC_SET_RETVAL(answer->data, rc); |
283 | } else { |
283 | } else { |
284 | IPC_SET_RETVAL(answer->data, ELIMIT); |
284 | IPC_SET_RETVAL(answer->data, ELIMIT); |
285 | } |
285 | } |
286 | } |
286 | } |
287 | free(answer->buffer); |
287 | free(answer->buffer); |
288 | answer->buffer = NULL; |
288 | answer->buffer = NULL; |
289 | } |
289 | } |
290 | return 0; |
290 | return 0; |
291 | } |
291 | } |
292 | 292 | ||
293 | static task_t *get_lock_callee_task(phone_t *phone) |
293 | static task_t *get_lock_callee_task(phone_t *phone) |
294 | { |
294 | { |
295 | answerbox_t *answerbox; |
295 | answerbox_t *answerbox; |
296 | task_t *ta; |
296 | task_t *ta; |
297 | 297 | ||
298 | // FIXME: locking!!! |
298 | // FIXME: locking!!! |
299 | 299 | ||
300 | answerbox = phone->callee; |
300 | answerbox = phone->callee; |
301 | ta = answerbox->task; |
301 | ta = answerbox->task; |
302 | 302 | ||
303 | spinlock_lock(&ta->lock); |
303 | spinlock_lock(&ta->lock); |
304 | 304 | ||
305 | return ta; |
305 | return ta; |
306 | } |
306 | } |
307 | 307 | ||
- | 308 | static thread_t *get_task_thread_by_id(task_t *ta, thread_id_t tid) |
|
- | 309 | { |
|
- | 310 | thread_t *t; |
|
- | 311 | link_t *cur; |
|
- | 312 | ||
- | 313 | for (cur = ta->th_head.next; cur != &ta->th_head; cur = cur->next) { |
|
- | 314 | t = list_get_instance(cur, thread_t, th_link); |
|
- | 315 | if (tid == t->tid) return t; |
|
- | 316 | } |
|
- | 317 | ||
- | 318 | return NULL; |
|
- | 319 | } |
|
- | 320 | ||
308 | #include <console/klog.h> |
321 | #include <console/klog.h> |
309 | 322 | ||
310 | static int debug_begin(call_t *call, phone_t *phone) |
323 | static int debug_begin(call_t *call, phone_t *phone) |
311 | { |
324 | { |
312 | task_t *ta; |
325 | task_t *ta; |
313 | 326 | ||
314 | klog_printf("debug_begin()"); |
327 | klog_printf("debug_begin()"); |
315 | 328 | ||
316 | ta = get_lock_callee_task(phone); |
329 | ta = get_lock_callee_task(phone); |
317 | klog_printf("debugging task %llu", ta->taskid); |
330 | klog_printf("debugging task %llu", ta->taskid); |
318 | 331 | ||
319 | if (ta->being_debugged != false) { |
332 | if (ta->being_debugged != false) { |
320 | spinlock_unlock(&ta->lock); |
333 | spinlock_unlock(&ta->lock); |
321 | klog_printf("debug_begin(): busy error"); |
334 | klog_printf("debug_begin(): busy error"); |
322 | return EBUSY; |
335 | return EBUSY; |
323 | } |
336 | } |
324 | 337 | ||
325 | ta->being_debugged = true; |
338 | ta->being_debugged = true; |
326 | ta->stop_request = true; |
339 | ta->stop_request = true; |
327 | ta->debug_begin_call = call; |
340 | ta->debug_begin_call = call; |
328 | 341 | ||
329 | if (ta->not_stoppable_count == 0) { |
342 | if (ta->not_stoppable_count == 0) { |
330 | ta->debug_begin_call = NULL; |
343 | ta->debug_begin_call = NULL; |
331 | ta->stop_request = false; |
344 | ta->stop_request = false; |
332 | spinlock_unlock(&ta->lock); |
345 | spinlock_unlock(&ta->lock); |
333 | klog_printf("debug_begin(): immediate backsend"); |
346 | klog_printf("debug_begin(): immediate backsend"); |
334 | return 1; /* actually we need backsend with 0 retval */ |
347 | return 1; /* actually we need backsend with 0 retval */ |
335 | } |
348 | } |
336 | 349 | ||
337 | spinlock_unlock(&ta->lock); |
350 | spinlock_unlock(&ta->lock); |
338 | 351 | ||
339 | klog_printf("debug_begin() done (wait for stoppability)"); |
352 | klog_printf("debug_begin() done (wait for stoppability)"); |
340 | return 0; |
353 | return 0; |
341 | } |
354 | } |
342 | 355 | ||
343 | static void debug_go(call_t *call, phone_t *phone) |
356 | static int debug_go(call_t *call, phone_t *phone) |
344 | { |
357 | { |
345 | thread_t *t; |
358 | thread_t *t; |
346 | link_t *l; |
- | |
347 | task_t *ta; |
359 | task_t *ta; |
348 | 360 | ||
349 | klog_printf("debug_go()"); |
361 | klog_printf("debug_go()"); |
350 | ta = get_lock_callee_task(phone); |
362 | ta = get_lock_callee_task(phone); |
351 | 363 | ||
352 | ta->debug_go_call = call; |
364 | ta->debug_go_call = call; |
- | 365 | t = get_task_thread_by_id(ta, IPC_GET_ARG1(call->data)); |
|
- | 366 | if (t == NULL) { |
|
- | 367 | spinlock_unlock(&ta->lock); |
|
- | 368 | return ENOENT; |
|
- | 369 | } |
|
353 | 370 | ||
354 | l = ta->th_head.next; |
- | |
355 | if (l != &TASK->th_head) { |
- | |
356 | t = list_get_instance(l, thread_t, th_link); |
- | |
357 | klog_printf("debug_go(): waitq_wakeup"); |
371 | klog_printf("debug_go(): waitq_wakeup"); |
358 | waitq_wakeup(&t->go_wq, WAKEUP_FIRST); |
372 | waitq_wakeup(&t->go_wq, WAKEUP_FIRST); |
359 | } |
- | |
360 | 373 | ||
361 | spinlock_unlock(&ta->lock); |
374 | spinlock_unlock(&ta->lock); |
- | 375 | ||
- | 376 | return 0; /* no backsend */ |
|
362 | } |
377 | } |
363 | 378 | ||
364 | static int debug_args_read(call_t *call, phone_t *phone) |
379 | static int debug_args_read(call_t *call, phone_t *phone) |
365 | { |
380 | { |
366 | thread_t *t; |
381 | thread_t *t; |
367 | link_t *l; |
- | |
368 | task_t *ta; |
382 | task_t *ta; |
369 | void *uspace_buffer; |
383 | void *uspace_buffer; |
370 | unative_t to_copy; |
384 | unative_t to_copy; |
371 | int rc; |
385 | int rc; |
372 | 386 | ||
373 | klog_printf("debug_args_read()"); |
387 | klog_printf("debug_args_read()"); |
374 | // FIXME: verify task/thread state |
388 | // FIXME: verify task/thread state |
375 | 389 | ||
376 | ta = get_lock_callee_task(phone); |
390 | ta = get_lock_callee_task(phone); |
377 | klog_printf("task %llu", ta->taskid); |
391 | klog_printf("task %llu", ta->taskid); |
- | 392 | t = get_task_thread_by_id(ta, IPC_GET_ARG1(call->data)); |
|
- | 393 | if (t == NULL) { |
|
- | 394 | spinlock_unlock(&ta->lock); |
|
- | 395 | return ENOENT; |
|
- | 396 | } |
|
378 | 397 | ||
379 | l = ta->th_head.next; |
- | |
380 | if (l != &TASK->th_head) { |
- | |
381 | t = list_get_instance(l, thread_t, th_link); |
- | |
382 | /* t = requested thread */ |
- | |
383 | uspace_buffer = (void *)IPC_GET_ARG2(call->data); |
398 | uspace_buffer = (void *)IPC_GET_ARG2(call->data); |
384 | to_copy = IPC_GET_ARG3(call->data); |
399 | to_copy = IPC_GET_ARG3(call->data); |
- | 400 | if (to_copy > 6) to_copy = 6; |
|
- | 401 | ||
385 | rc = copy_to_uspace(uspace_buffer, t->syscall_args, to_copy); |
402 | rc = copy_to_uspace(uspace_buffer, t->syscall_args, to_copy); |
386 | if (rc != 0) { |
403 | if (rc != 0) { |
387 | spinlock_unlock(&ta->lock); |
404 | spinlock_unlock(&ta->lock); |
388 | klog_printf("debug_args_read() - copy failed"); |
405 | klog_printf("debug_args_read() - copy failed"); |
389 | return rc; |
406 | return rc; |
390 | } |
407 | } |
- | 408 | ||
- | 409 | spinlock_unlock(&ta->lock); |
|
- | 410 | ||
391 | IPC_SET_ARG1(call->data, to_copy); |
411 | IPC_SET_ARG1(call->data, to_copy); |
- | 412 | ||
- | 413 | klog_printf("debug_args_read() done"); |
|
- | 414 | return 1; /* actually need becksend with retval 0 */ |
|
- | 415 | } |
|
- | 416 | ||
- | 417 | static int debug_thread_read(call_t *call, phone_t *phone) |
|
- | 418 | { |
|
- | 419 | thread_t *t; |
|
- | 420 | link_t *cur; |
|
- | 421 | task_t *ta; |
|
- | 422 | unative_t *uspace_buffer; |
|
- | 423 | unative_t to_copy; |
|
- | 424 | int rc; |
|
- | 425 | unsigned copied, total; |
|
- | 426 | unsigned buf_size; |
|
- | 427 | unative_t tid; |
|
- | 428 | ||
- | 429 | klog_printf("debug_thread_read()"); |
|
- | 430 | // FIXME: verify task/thread state |
|
- | 431 | ||
- | 432 | ta = get_lock_callee_task(phone); |
|
- | 433 | klog_printf("task %llu", ta->taskid); |
|
- | 434 | ||
- | 435 | uspace_buffer = (void *)IPC_GET_ARG1(call->data); |
|
- | 436 | buf_size = IPC_GET_ARG2(call->data); |
|
- | 437 | ||
- | 438 | copied = total = 0; |
|
- | 439 | for (cur = ta->th_head.next; cur != &ta->th_head; cur = cur->next) { |
|
- | 440 | t = list_get_instance(cur, thread_t, th_link); |
|
- | 441 | ||
- | 442 | //FIXME: id cropped!! |
|
- | 443 | tid = (unative_t) t->tid; |
|
- | 444 | ||
- | 445 | to_copy = sizeof(unative_t); |
|
- | 446 | if (copied + to_copy >= buf_size) |
|
- | 447 | to_copy = buf_size - copied; |
|
- | 448 | ||
- | 449 | if (to_copy > 0) { |
|
- | 450 | rc = copy_to_uspace(uspace_buffer, &tid, to_copy); |
|
- | 451 | if (rc != 0) { |
|
- | 452 | spinlock_unlock(&ta->lock); |
|
- | 453 | klog_printf("debug_thread_read() - copy failed"); |
|
- | 454 | return rc; |
|
- | 455 | } |
|
- | 456 | } |
|
- | 457 | ||
- | 458 | ++uspace_buffer; |
|
- | 459 | total += sizeof(unative_t); |
|
- | 460 | copied += to_copy; |
|
392 | } |
461 | } |
393 | 462 | ||
394 | spinlock_unlock(&ta->lock); |
463 | spinlock_unlock(&ta->lock); |
395 | 464 | ||
- | 465 | IPC_SET_ARG1(call->data, copied); |
|
- | 466 | IPC_SET_ARG2(call->data, total); |
|
- | 467 | ||
396 | klog_printf("debug_args_read() done"); |
468 | klog_printf("debug_thread_read() done"); |
397 | return 1; /* actually need becksend with retval 0 */ |
469 | return 1; /* actually need becksend with retval 0 */ |
398 | } |
470 | } |
399 | 471 | ||
400 | 472 | ||
401 | /** Called before the request is sent. |
473 | /** Called before the request is sent. |
402 | * |
474 | * |
403 | * @param call Call structure with the request. |
475 | * @param call Call structure with the request. |
404 | * @param phone Phone that the call will be sent through. |
476 | * @param phone Phone that the call will be sent through. |
405 | * |
477 | * |
406 | * @return Return 0 on success, ELIMIT or EPERM on error. |
478 | * @return Return 0 on success, ELIMIT or EPERM on error. |
407 | */ |
479 | */ |
408 | static int request_preprocess(call_t *call, phone_t *phone) |
480 | static int request_preprocess(call_t *call, phone_t *phone) |
409 | { |
481 | { |
410 | int newphid; |
482 | int newphid; |
411 | size_t size; |
483 | size_t size; |
412 | uintptr_t src; |
484 | uintptr_t src; |
413 | int rc; |
485 | int rc; |
414 | 486 | ||
415 | switch (IPC_GET_METHOD(call->data)) { |
487 | switch (IPC_GET_METHOD(call->data)) { |
416 | case IPC_M_CONNECT_ME_TO: |
488 | case IPC_M_CONNECT_ME_TO: |
417 | newphid = phone_alloc(); |
489 | newphid = phone_alloc(); |
418 | if (newphid < 0) |
490 | if (newphid < 0) |
419 | return ELIMIT; |
491 | return ELIMIT; |
420 | /* Set arg5 for server */ |
492 | /* Set arg5 for server */ |
421 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
493 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
422 | call->flags |= IPC_CALL_CONN_ME_TO; |
494 | call->flags |= IPC_CALL_CONN_ME_TO; |
423 | call->priv = newphid; |
495 | call->priv = newphid; |
424 | break; |
496 | break; |
425 | case IPC_M_SHARE_OUT: |
497 | case IPC_M_SHARE_OUT: |
426 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
498 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
427 | if (!size) |
499 | if (!size) |
428 | return EPERM; |
500 | return EPERM; |
429 | IPC_SET_ARG2(call->data, size); |
501 | IPC_SET_ARG2(call->data, size); |
430 | break; |
502 | break; |
431 | case IPC_M_DATA_READ: |
503 | case IPC_M_DATA_READ: |
432 | size = IPC_GET_ARG2(call->data); |
504 | size = IPC_GET_ARG2(call->data); |
433 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
505 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
434 | return ELIMIT; |
506 | return ELIMIT; |
435 | break; |
507 | break; |
436 | case IPC_M_DATA_WRITE: |
508 | case IPC_M_DATA_WRITE: |
437 | src = IPC_GET_ARG1(call->data); |
509 | src = IPC_GET_ARG1(call->data); |
438 | size = IPC_GET_ARG2(call->data); |
510 | size = IPC_GET_ARG2(call->data); |
439 | 511 | ||
440 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
512 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
441 | return ELIMIT; |
513 | return ELIMIT; |
442 | 514 | ||
443 | call->buffer = (uint8_t *) malloc(size, 0); |
515 | call->buffer = (uint8_t *) malloc(size, 0); |
444 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
516 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
445 | if (rc != 0) { |
517 | if (rc != 0) { |
446 | free(call->buffer); |
518 | free(call->buffer); |
447 | return rc; |
519 | return rc; |
448 | } |
520 | } |
449 | break; |
521 | break; |
450 | case IPC_M_DEBUG_BEGIN: |
522 | case IPC_M_DEBUG_BEGIN: |
451 | /* actually need possibility of backsend with 0 result code */ |
523 | /* actually need possibility of backsend with 0 result code */ |
452 | rc = debug_begin(call, phone); |
524 | rc = debug_begin(call, phone); |
453 | return rc; |
525 | return rc; |
454 | case IPC_M_DEBUG_GO: |
526 | case IPC_M_DEBUG_GO: |
455 | debug_go(call, phone); |
527 | rc = debug_go(call, phone); |
456 | break; |
528 | return rc; |
457 | case IPC_M_DEBUG_ARGS_READ: |
529 | case IPC_M_DEBUG_ARGS_READ: |
458 | rc = debug_args_read(call, phone); |
530 | rc = debug_args_read(call, phone); |
459 | return rc; |
531 | return rc; |
- | 532 | case IPC_M_DEBUG_THREAD_READ: |
|
- | 533 | rc = debug_thread_read(call, phone); |
|
- | 534 | return rc; |
|
460 | default: |
535 | default: |
461 | break; |
536 | break; |
462 | } |
537 | } |
463 | return 0; |
538 | return 0; |
464 | } |
539 | } |
465 | 540 | ||
466 | /******************************************************************************* |
541 | /******************************************************************************* |
467 | * Functions called to process received call/answer before passing it to uspace. |
542 | * Functions called to process received call/answer before passing it to uspace. |
468 | *******************************************************************************/ |
543 | *******************************************************************************/ |
469 | 544 | ||
470 | /** Do basic kernel processing of received call answer. |
545 | /** Do basic kernel processing of received call answer. |
471 | * |
546 | * |
472 | * @param call Call structure with the answer. |
547 | * @param call Call structure with the answer. |
473 | */ |
548 | */ |
474 | static void process_answer(call_t *call) |
549 | static void process_answer(call_t *call) |
475 | { |
550 | { |
476 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
551 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
477 | (call->flags & IPC_CALL_FORWARDED)) |
552 | (call->flags & IPC_CALL_FORWARDED)) |
478 | IPC_SET_RETVAL(call->data, EFORWARD); |
553 | IPC_SET_RETVAL(call->data, EFORWARD); |
479 | 554 | ||
480 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
555 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
481 | if (IPC_GET_RETVAL(call->data)) |
556 | if (IPC_GET_RETVAL(call->data)) |
482 | phone_dealloc(call->priv); |
557 | phone_dealloc(call->priv); |
483 | else |
558 | else |
484 | IPC_SET_ARG5(call->data, call->priv); |
559 | IPC_SET_ARG5(call->data, call->priv); |
485 | } |
560 | } |
486 | 561 | ||
487 | if (call->buffer) { |
562 | if (call->buffer) { |
488 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
563 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
489 | uintptr_t dst = IPC_GET_ARG1(call->data); |
564 | uintptr_t dst = IPC_GET_ARG1(call->data); |
490 | size_t size = IPC_GET_ARG2(call->data); |
565 | size_t size = IPC_GET_ARG2(call->data); |
491 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
566 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
492 | if (rc) |
567 | if (rc) |
493 | IPC_SET_RETVAL(call->data, rc); |
568 | IPC_SET_RETVAL(call->data, rc); |
494 | free(call->buffer); |
569 | free(call->buffer); |
495 | call->buffer = NULL; |
570 | call->buffer = NULL; |
496 | } |
571 | } |
497 | } |
572 | } |
498 | 573 | ||
499 | /** Do basic kernel processing of received call request. |
574 | /** Do basic kernel processing of received call request. |
500 | * |
575 | * |
501 | * @param box Destination answerbox structure. |
576 | * @param box Destination answerbox structure. |
502 | * @param call Call structure with the request. |
577 | * @param call Call structure with the request. |
503 | * |
578 | * |
504 | * @return Return 0 if the call should be passed to userspace. |
579 | * @return Return 0 if the call should be passed to userspace. |
505 | * Return -1 if the call should be ignored. |
580 | * Return -1 if the call should be ignored. |
506 | */ |
581 | */ |
507 | static int process_request(answerbox_t *box, call_t *call) |
582 | static int process_request(answerbox_t *box, call_t *call) |
508 | { |
583 | { |
509 | int phoneid; |
584 | int phoneid; |
510 | 585 | ||
511 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
586 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
512 | phoneid = phone_alloc(); |
587 | phoneid = phone_alloc(); |
513 | if (phoneid < 0) { /* Failed to allocate phone */ |
588 | if (phoneid < 0) { /* Failed to allocate phone */ |
514 | IPC_SET_RETVAL(call->data, ELIMIT); |
589 | IPC_SET_RETVAL(call->data, ELIMIT); |
515 | ipc_answer(box, call); |
590 | ipc_answer(box, call); |
516 | return -1; |
591 | return -1; |
517 | } |
592 | } |
518 | IPC_SET_ARG5(call->data, phoneid); |
593 | IPC_SET_ARG5(call->data, phoneid); |
519 | } |
594 | } |
520 | switch (IPC_GET_METHOD(call->data)) { |
595 | switch (IPC_GET_METHOD(call->data)) { |
521 | case IPC_M_DEBUG_BEGIN: |
596 | case IPC_M_DEBUG_BEGIN: |
522 | case IPC_M_DEBUG_END: |
597 | case IPC_M_DEBUG_END: |
523 | case IPC_M_DEBUG_GO: |
598 | case IPC_M_DEBUG_GO: |
524 | case IPC_M_DEBUG_STOP: |
599 | case IPC_M_DEBUG_STOP: |
525 | case IPC_M_DEBUG_GUARD: |
600 | case IPC_M_DEBUG_GUARD: |
526 | return -1; |
601 | return -1; |
527 | default: |
602 | default: |
528 | break; |
603 | break; |
529 | } |
604 | } |
530 | return 0; |
605 | return 0; |
531 | } |
606 | } |
532 | 607 | ||
533 | /** Make a fast call over IPC, wait for reply and return to user. |
608 | /** Make a fast call over IPC, wait for reply and return to user. |
534 | * |
609 | * |
535 | * This function can handle only three arguments of payload, but is faster than |
610 | * This function can handle only three arguments of payload, but is faster than |
536 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
611 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
537 | * |
612 | * |
538 | * @param phoneid Phone handle for the call. |
613 | * @param phoneid Phone handle for the call. |
539 | * @param method Method of the call. |
614 | * @param method Method of the call. |
540 | * @param arg1 Service-defined payload argument. |
615 | * @param arg1 Service-defined payload argument. |
541 | * @param arg2 Service-defined payload argument. |
616 | * @param arg2 Service-defined payload argument. |
542 | * @param arg3 Service-defined payload argument. |
617 | * @param arg3 Service-defined payload argument. |
543 | * @param data Address of userspace structure where the reply call will |
618 | * @param data Address of userspace structure where the reply call will |
544 | * be stored. |
619 | * be stored. |
545 | * |
620 | * |
546 | * @return Returns 0 on success. |
621 | * @return Returns 0 on success. |
547 | * Return ENOENT if there is no such phone handle. |
622 | * Return ENOENT if there is no such phone handle. |
548 | */ |
623 | */ |
549 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
624 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
550 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
625 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
551 | { |
626 | { |
552 | call_t call; |
627 | call_t call; |
553 | phone_t *phone; |
628 | phone_t *phone; |
554 | int res; |
629 | int res; |
555 | int rc; |
630 | int rc; |
556 | 631 | ||
557 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
632 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
558 | 633 | ||
559 | ipc_call_static_init(&call); |
634 | ipc_call_static_init(&call); |
560 | IPC_SET_METHOD(call.data, method); |
635 | IPC_SET_METHOD(call.data, method); |
561 | IPC_SET_ARG1(call.data, arg1); |
636 | IPC_SET_ARG1(call.data, arg1); |
562 | IPC_SET_ARG2(call.data, arg2); |
637 | IPC_SET_ARG2(call.data, arg2); |
563 | IPC_SET_ARG3(call.data, arg3); |
638 | IPC_SET_ARG3(call.data, arg3); |
564 | /* |
639 | /* |
565 | * To achieve deterministic behavior, zero out arguments that are beyond |
640 | * To achieve deterministic behavior, zero out arguments that are beyond |
566 | * the limits of the fast version. |
641 | * the limits of the fast version. |
567 | */ |
642 | */ |
568 | IPC_SET_ARG4(call.data, 0); |
643 | IPC_SET_ARG4(call.data, 0); |
569 | IPC_SET_ARG5(call.data, 0); |
644 | IPC_SET_ARG5(call.data, 0); |
570 | 645 | ||
571 | if (!(res = request_preprocess(&call, phone))) { |
646 | if (!(res = request_preprocess(&call, phone))) { |
572 | ipc_call_sync(phone, &call); |
647 | ipc_call_sync(phone, &call); |
573 | process_answer(&call); |
648 | process_answer(&call); |
574 | } else { |
649 | } else { |
575 | IPC_SET_RETVAL(call.data, res); |
650 | IPC_SET_RETVAL(call.data, res); |
576 | } |
651 | } |
577 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
652 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
578 | if (rc != 0) |
653 | if (rc != 0) |
579 | return rc; |
654 | return rc; |
580 | 655 | ||
581 | return 0; |
656 | return 0; |
582 | } |
657 | } |
583 | 658 | ||
584 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
659 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
585 | * |
660 | * |
586 | * @param phoneid Phone handle for the call. |
661 | * @param phoneid Phone handle for the call. |
587 | * @param question Userspace address of call data with the request. |
662 | * @param question Userspace address of call data with the request. |
588 | * @param reply Userspace address of call data where to store the |
663 | * @param reply Userspace address of call data where to store the |
589 | * answer. |
664 | * answer. |
590 | * |
665 | * |
591 | * @return Zero on success or an error code. |
666 | * @return Zero on success or an error code. |
592 | */ |
667 | */ |
593 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
668 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
594 | ipc_data_t *reply) |
669 | ipc_data_t *reply) |
595 | { |
670 | { |
596 | call_t call; |
671 | call_t call; |
597 | phone_t *phone; |
672 | phone_t *phone; |
598 | int res; |
673 | int res; |
599 | int rc; |
674 | int rc; |
600 | 675 | ||
601 | ipc_call_static_init(&call); |
676 | ipc_call_static_init(&call); |
602 | rc = copy_from_uspace(&call.data.args, &question->args, |
677 | rc = copy_from_uspace(&call.data.args, &question->args, |
603 | sizeof(call.data.args)); |
678 | sizeof(call.data.args)); |
604 | if (rc != 0) |
679 | if (rc != 0) |
605 | return (unative_t) rc; |
680 | return (unative_t) rc; |
606 | 681 | ||
607 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
682 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
608 | 683 | ||
609 | if (!(res = request_preprocess(&call, phone))) { |
684 | if (!(res = request_preprocess(&call, phone))) { |
610 | ipc_call_sync(phone, &call); |
685 | ipc_call_sync(phone, &call); |
611 | process_answer(&call); |
686 | process_answer(&call); |
612 | } else |
687 | } else |
613 | IPC_SET_RETVAL(call.data, res); |
688 | IPC_SET_RETVAL(call.data, res); |
614 | 689 | ||
615 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
690 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
616 | if (rc != 0) |
691 | if (rc != 0) |
617 | return rc; |
692 | return rc; |
618 | 693 | ||
619 | return 0; |
694 | return 0; |
620 | } |
695 | } |
621 | 696 | ||
622 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
697 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
623 | * |
698 | * |
624 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
699 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
625 | */ |
700 | */ |
626 | static int check_call_limit(void) |
701 | static int check_call_limit(void) |
627 | { |
702 | { |
628 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
703 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
629 | atomic_dec(&TASK->active_calls); |
704 | atomic_dec(&TASK->active_calls); |
630 | return -1; |
705 | return -1; |
631 | } |
706 | } |
632 | return 0; |
707 | return 0; |
633 | } |
708 | } |
634 | 709 | ||
635 | /** Make a fast asynchronous call over IPC. |
710 | /** Make a fast asynchronous call over IPC. |
636 | * |
711 | * |
637 | * This function can only handle four arguments of payload, but is faster than |
712 | * This function can only handle four arguments of payload, but is faster than |
638 | * the generic function sys_ipc_call_async_slow(). |
713 | * the generic function sys_ipc_call_async_slow(). |
639 | * |
714 | * |
640 | * @param phoneid Phone handle for the call. |
715 | * @param phoneid Phone handle for the call. |
641 | * @param method Method of the call. |
716 | * @param method Method of the call. |
642 | * @param arg1 Service-defined payload argument. |
717 | * @param arg1 Service-defined payload argument. |
643 | * @param arg2 Service-defined payload argument. |
718 | * @param arg2 Service-defined payload argument. |
644 | * @param arg3 Service-defined payload argument. |
719 | * @param arg3 Service-defined payload argument. |
645 | * @param arg4 Service-defined payload argument. |
720 | * @param arg4 Service-defined payload argument. |
646 | * |
721 | * |
647 | * @return Return call hash on success. |
722 | * @return Return call hash on success. |
648 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
723 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
649 | * IPC_CALLRET_TEMPORARY if there are too many pending |
724 | * IPC_CALLRET_TEMPORARY if there are too many pending |
650 | * asynchronous requests; answers should be handled first. |
725 | * asynchronous requests; answers should be handled first. |
651 | */ |
726 | */ |
652 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
727 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
653 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
728 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
654 | { |
729 | { |
655 | call_t *call; |
730 | call_t *call; |
656 | phone_t *phone; |
731 | phone_t *phone; |
657 | int res; |
732 | int res; |
658 | 733 | ||
659 | if (check_call_limit()) |
734 | if (check_call_limit()) |
660 | return IPC_CALLRET_TEMPORARY; |
735 | return IPC_CALLRET_TEMPORARY; |
661 | 736 | ||
662 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
737 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
663 | 738 | ||
664 | call = ipc_call_alloc(0); |
739 | call = ipc_call_alloc(0); |
665 | IPC_SET_METHOD(call->data, method); |
740 | IPC_SET_METHOD(call->data, method); |
666 | IPC_SET_ARG1(call->data, arg1); |
741 | IPC_SET_ARG1(call->data, arg1); |
667 | IPC_SET_ARG2(call->data, arg2); |
742 | IPC_SET_ARG2(call->data, arg2); |
668 | IPC_SET_ARG3(call->data, arg3); |
743 | IPC_SET_ARG3(call->data, arg3); |
669 | IPC_SET_ARG4(call->data, arg4); |
744 | IPC_SET_ARG4(call->data, arg4); |
670 | /* |
745 | /* |
671 | * To achieve deterministic behavior, zero out arguments that are beyond |
746 | * To achieve deterministic behavior, zero out arguments that are beyond |
672 | * the limits of the fast version. |
747 | * the limits of the fast version. |
673 | */ |
748 | */ |
674 | IPC_SET_ARG5(call->data, 0); |
749 | IPC_SET_ARG5(call->data, 0); |
675 | 750 | ||
676 | if (!(res = request_preprocess(call, phone))) |
751 | if (!(res = request_preprocess(call, phone))) |
677 | ipc_call(phone, call); |
752 | ipc_call(phone, call); |
678 | else |
753 | else |
679 | ipc_backsend_err(phone, call, res); |
754 | ipc_backsend_err(phone, call, res); |
680 | 755 | ||
681 | return (unative_t) call; |
756 | return (unative_t) call; |
682 | } |
757 | } |
683 | 758 | ||
684 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
759 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
685 | * |
760 | * |
686 | * @param phoneid Phone handle for the call. |
761 | * @param phoneid Phone handle for the call. |
687 | * @param data Userspace address of call data with the request. |
762 | * @param data Userspace address of call data with the request. |
688 | * |
763 | * |
689 | * @return See sys_ipc_call_async_fast(). |
764 | * @return See sys_ipc_call_async_fast(). |
690 | */ |
765 | */ |
691 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
766 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
692 | { |
767 | { |
693 | call_t *call; |
768 | call_t *call; |
694 | phone_t *phone; |
769 | phone_t *phone; |
695 | int res; |
770 | int res; |
696 | int rc; |
771 | int rc; |
697 | 772 | ||
698 | if (check_call_limit()) |
773 | if (check_call_limit()) |
699 | return IPC_CALLRET_TEMPORARY; |
774 | return IPC_CALLRET_TEMPORARY; |
700 | 775 | ||
701 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
776 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
702 | 777 | ||
703 | call = ipc_call_alloc(0); |
778 | call = ipc_call_alloc(0); |
704 | rc = copy_from_uspace(&call->data.args, &data->args, |
779 | rc = copy_from_uspace(&call->data.args, &data->args, |
705 | sizeof(call->data.args)); |
780 | sizeof(call->data.args)); |
706 | if (rc != 0) { |
781 | if (rc != 0) { |
707 | ipc_call_free(call); |
782 | ipc_call_free(call); |
708 | return (unative_t) rc; |
783 | return (unative_t) rc; |
709 | } |
784 | } |
710 | if (!(res = request_preprocess(call, phone))) |
785 | if (!(res = request_preprocess(call, phone))) |
711 | ipc_call(phone, call); |
786 | ipc_call(phone, call); |
712 | else |
787 | else |
713 | ipc_backsend_err(phone, call, res); |
788 | ipc_backsend_err(phone, call, res); |
714 | 789 | ||
715 | return (unative_t) call; |
790 | return (unative_t) call; |
716 | } |
791 | } |
717 | 792 | ||
718 | /** Forward a received call to another destination. |
793 | /** Forward a received call to another destination. |
719 | * |
794 | * |
720 | * @param callid Hash of the call to forward. |
795 | * @param callid Hash of the call to forward. |
721 | * @param phoneid Phone handle to use for forwarding. |
796 | * @param phoneid Phone handle to use for forwarding. |
722 | * @param method New method to use for the forwarded call. |
797 | * @param method New method to use for the forwarded call. |
723 | * @param arg1 New value of the first argument for the forwarded call. |
798 | * @param arg1 New value of the first argument for the forwarded call. |
724 | * @param arg2 New value of the second argument for the forwarded call. |
799 | * @param arg2 New value of the second argument for the forwarded call. |
725 | * @param mode Flags that specify mode of the forward operation. |
800 | * @param mode Flags that specify mode of the forward operation. |
726 | * |
801 | * |
727 | * @return Return 0 on succes, otherwise return an error code. |
802 | * @return Return 0 on succes, otherwise return an error code. |
728 | * |
803 | * |
729 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
804 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
730 | * overwritten in the forwarded message with the new method and the new arg1 and |
805 | * overwritten in the forwarded message with the new method and the new arg1 and |
731 | * arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are rewritten with |
806 | * arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are rewritten with |
732 | * the new method, arg1 and arg2, respectively. Also note there is a set of |
807 | * the new method, arg1 and arg2, respectively. Also note there is a set of |
733 | * immutable methods, for which the new method and argument is not set and |
808 | * immutable methods, for which the new method and argument is not set and |
734 | * these values are ignored. |
809 | * these values are ignored. |
735 | * |
810 | * |
736 | * Warning: When implementing support for changing additional payload |
811 | * Warning: When implementing support for changing additional payload |
737 | * arguments, make sure that ARG5 is not rewritten for certain |
812 | * arguments, make sure that ARG5 is not rewritten for certain |
738 | * system IPC |
813 | * system IPC |
739 | */ |
814 | */ |
740 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
815 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
741 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
816 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
742 | { |
817 | { |
743 | call_t *call; |
818 | call_t *call; |
744 | phone_t *phone; |
819 | phone_t *phone; |
745 | 820 | ||
746 | call = get_call(callid); |
821 | call = get_call(callid); |
747 | if (!call) |
822 | if (!call) |
748 | return ENOENT; |
823 | return ENOENT; |
749 | 824 | ||
750 | call->flags |= IPC_CALL_FORWARDED; |
825 | call->flags |= IPC_CALL_FORWARDED; |
751 | 826 | ||
752 | GET_CHECK_PHONE(phone, phoneid, { |
827 | GET_CHECK_PHONE(phone, phoneid, { |
753 | IPC_SET_RETVAL(call->data, EFORWARD); |
828 | IPC_SET_RETVAL(call->data, EFORWARD); |
754 | ipc_answer(&TASK->answerbox, call); |
829 | ipc_answer(&TASK->answerbox, call); |
755 | return ENOENT; |
830 | return ENOENT; |
756 | }); |
831 | }); |
757 | 832 | ||
758 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
833 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
759 | IPC_SET_RETVAL(call->data, EFORWARD); |
834 | IPC_SET_RETVAL(call->data, EFORWARD); |
760 | ipc_answer(&TASK->answerbox, call); |
835 | ipc_answer(&TASK->answerbox, call); |
761 | return EPERM; |
836 | return EPERM; |
762 | } |
837 | } |
763 | 838 | ||
764 | /* |
839 | /* |
765 | * Userspace is not allowed to change method of system methods on |
840 | * Userspace is not allowed to change method of system methods on |
766 | * forward, allow changing ARG1, ARG2 and ARG3 by means of method, |
841 | * forward, allow changing ARG1, ARG2 and ARG3 by means of method, |
767 | * arg1 and arg2. |
842 | * arg1 and arg2. |
768 | * If the method is immutable, don't change anything. |
843 | * If the method is immutable, don't change anything. |
769 | */ |
844 | */ |
770 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
845 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
771 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
846 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
772 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
847 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
773 | phone_dealloc(IPC_GET_ARG5(call->data)); |
848 | phone_dealloc(IPC_GET_ARG5(call->data)); |
774 | 849 | ||
775 | IPC_SET_ARG1(call->data, method); |
850 | IPC_SET_ARG1(call->data, method); |
776 | IPC_SET_ARG2(call->data, arg1); |
851 | IPC_SET_ARG2(call->data, arg1); |
777 | IPC_SET_ARG3(call->data, arg2); |
852 | IPC_SET_ARG3(call->data, arg2); |
778 | } else { |
853 | } else { |
779 | IPC_SET_METHOD(call->data, method); |
854 | IPC_SET_METHOD(call->data, method); |
780 | IPC_SET_ARG1(call->data, arg1); |
855 | IPC_SET_ARG1(call->data, arg1); |
781 | IPC_SET_ARG2(call->data, arg2); |
856 | IPC_SET_ARG2(call->data, arg2); |
782 | } |
857 | } |
783 | } |
858 | } |
784 | 859 | ||
785 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
860 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
786 | } |
861 | } |
787 | 862 | ||
788 | /** Answer an IPC call - fast version. |
863 | /** Answer an IPC call - fast version. |
789 | * |
864 | * |
790 | * This function can handle only two return arguments of payload, but is faster |
865 | * This function can handle only two return arguments of payload, but is faster |
791 | * than the generic sys_ipc_answer(). |
866 | * than the generic sys_ipc_answer(). |
792 | * |
867 | * |
793 | * @param callid Hash of the call to be answered. |
868 | * @param callid Hash of the call to be answered. |
794 | * @param retval Return value of the answer. |
869 | * @param retval Return value of the answer. |
795 | * @param arg1 Service-defined return value. |
870 | * @param arg1 Service-defined return value. |
796 | * @param arg2 Service-defined return value. |
871 | * @param arg2 Service-defined return value. |
797 | * @param arg3 Service-defined return value. |
872 | * @param arg3 Service-defined return value. |
798 | * @param arg4 Service-defined return value. |
873 | * @param arg4 Service-defined return value. |
799 | * |
874 | * |
800 | * @return Return 0 on success, otherwise return an error code. |
875 | * @return Return 0 on success, otherwise return an error code. |
801 | */ |
876 | */ |
802 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
877 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
803 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
878 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
804 | { |
879 | { |
805 | call_t *call; |
880 | call_t *call; |
806 | ipc_data_t saved_data; |
881 | ipc_data_t saved_data; |
807 | int saveddata = 0; |
882 | int saveddata = 0; |
808 | int rc; |
883 | int rc; |
809 | 884 | ||
810 | /* Do not answer notification callids */ |
885 | /* Do not answer notification callids */ |
811 | if (callid & IPC_CALLID_NOTIFICATION) |
886 | if (callid & IPC_CALLID_NOTIFICATION) |
812 | return 0; |
887 | return 0; |
813 | 888 | ||
814 | call = get_call(callid); |
889 | call = get_call(callid); |
815 | if (!call) |
890 | if (!call) |
816 | return ENOENT; |
891 | return ENOENT; |
817 | 892 | ||
818 | if (answer_need_old(call)) { |
893 | if (answer_need_old(call)) { |
819 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
894 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
820 | saveddata = 1; |
895 | saveddata = 1; |
821 | } |
896 | } |
822 | 897 | ||
823 | IPC_SET_RETVAL(call->data, retval); |
898 | IPC_SET_RETVAL(call->data, retval); |
824 | IPC_SET_ARG1(call->data, arg1); |
899 | IPC_SET_ARG1(call->data, arg1); |
825 | IPC_SET_ARG2(call->data, arg2); |
900 | IPC_SET_ARG2(call->data, arg2); |
826 | IPC_SET_ARG3(call->data, arg3); |
901 | IPC_SET_ARG3(call->data, arg3); |
827 | IPC_SET_ARG4(call->data, arg4); |
902 | IPC_SET_ARG4(call->data, arg4); |
828 | /* |
903 | /* |
829 | * To achieve deterministic behavior, zero out arguments that are beyond |
904 | * To achieve deterministic behavior, zero out arguments that are beyond |
830 | * the limits of the fast version. |
905 | * the limits of the fast version. |
831 | */ |
906 | */ |
832 | IPC_SET_ARG5(call->data, 0); |
907 | IPC_SET_ARG5(call->data, 0); |
833 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
908 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
834 | 909 | ||
835 | ipc_answer(&TASK->answerbox, call); |
910 | ipc_answer(&TASK->answerbox, call); |
836 | return rc; |
911 | return rc; |
837 | } |
912 | } |
838 | 913 | ||
839 | /** Answer an IPC call. |
914 | /** Answer an IPC call. |
840 | * |
915 | * |
841 | * @param callid Hash of the call to be answered. |
916 | * @param callid Hash of the call to be answered. |
842 | * @param data Userspace address of call data with the answer. |
917 | * @param data Userspace address of call data with the answer. |
843 | * |
918 | * |
844 | * @return Return 0 on success, otherwise return an error code. |
919 | * @return Return 0 on success, otherwise return an error code. |
845 | */ |
920 | */ |
846 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
921 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
847 | { |
922 | { |
848 | call_t *call; |
923 | call_t *call; |
849 | ipc_data_t saved_data; |
924 | ipc_data_t saved_data; |
850 | int saveddata = 0; |
925 | int saveddata = 0; |
851 | int rc; |
926 | int rc; |
852 | 927 | ||
853 | /* Do not answer notification callids */ |
928 | /* Do not answer notification callids */ |
854 | if (callid & IPC_CALLID_NOTIFICATION) |
929 | if (callid & IPC_CALLID_NOTIFICATION) |
855 | return 0; |
930 | return 0; |
856 | 931 | ||
857 | call = get_call(callid); |
932 | call = get_call(callid); |
858 | if (!call) |
933 | if (!call) |
859 | return ENOENT; |
934 | return ENOENT; |
860 | 935 | ||
861 | if (answer_need_old(call)) { |
936 | if (answer_need_old(call)) { |
862 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
937 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
863 | saveddata = 1; |
938 | saveddata = 1; |
864 | } |
939 | } |
865 | rc = copy_from_uspace(&call->data.args, &data->args, |
940 | rc = copy_from_uspace(&call->data.args, &data->args, |
866 | sizeof(call->data.args)); |
941 | sizeof(call->data.args)); |
867 | if (rc != 0) |
942 | if (rc != 0) |
868 | return rc; |
943 | return rc; |
869 | 944 | ||
870 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
945 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
871 | 946 | ||
872 | ipc_answer(&TASK->answerbox, call); |
947 | ipc_answer(&TASK->answerbox, call); |
873 | 948 | ||
874 | return rc; |
949 | return rc; |
875 | } |
950 | } |
876 | 951 | ||
877 | /** Hang up a phone. |
952 | /** Hang up a phone. |
878 | * |
953 | * |
879 | * @param Phone handle of the phone to be hung up. |
954 | * @param Phone handle of the phone to be hung up. |
880 | * |
955 | * |
881 | * @return Return 0 on success or an error code. |
956 | * @return Return 0 on success or an error code. |
882 | */ |
957 | */ |
883 | unative_t sys_ipc_hangup(int phoneid) |
958 | unative_t sys_ipc_hangup(int phoneid) |
884 | { |
959 | { |
885 | phone_t *phone; |
960 | phone_t *phone; |
886 | 961 | ||
887 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
962 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
888 | 963 | ||
889 | if (ipc_phone_hangup(phone)) |
964 | if (ipc_phone_hangup(phone)) |
890 | return -1; |
965 | return -1; |
891 | 966 | ||
892 | return 0; |
967 | return 0; |
893 | } |
968 | } |
894 | 969 | ||
895 | /** Wait for an incoming IPC call or an answer. |
970 | /** Wait for an incoming IPC call or an answer. |
896 | * |
971 | * |
897 | * @param calldata Pointer to buffer where the call/answer data is stored. |
972 | * @param calldata Pointer to buffer where the call/answer data is stored. |
898 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
973 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
899 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
974 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
900 | * for explanation. |
975 | * for explanation. |
901 | * |
976 | * |
902 | * @return Hash of the call. |
977 | * @return Hash of the call. |
903 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
978 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
904 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
979 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
905 | * answer. |
980 | * answer. |
906 | */ |
981 | */ |
907 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
982 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
908 | { |
983 | { |
909 | call_t *call; |
984 | call_t *call; |
910 | 985 | ||
911 | restart: |
986 | restart: |
912 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
987 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
913 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
988 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
914 | if (!call) |
989 | if (!call) |
915 | return 0; |
990 | return 0; |
916 | 991 | ||
917 | if (call->flags & IPC_CALL_NOTIF) { |
992 | if (call->flags & IPC_CALL_NOTIF) { |
918 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
993 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
919 | 994 | ||
920 | /* Set in_phone_hash to the interrupt counter */ |
995 | /* Set in_phone_hash to the interrupt counter */ |
921 | call->data.phone = (void *) call->priv; |
996 | call->data.phone = (void *) call->priv; |
922 | 997 | ||
923 | STRUCT_TO_USPACE(calldata, &call->data); |
998 | STRUCT_TO_USPACE(calldata, &call->data); |
924 | 999 | ||
925 | ipc_call_free(call); |
1000 | ipc_call_free(call); |
926 | 1001 | ||
927 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
1002 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
928 | } |
1003 | } |
929 | 1004 | ||
930 | if (call->flags & IPC_CALL_ANSWERED) { |
1005 | if (call->flags & IPC_CALL_ANSWERED) { |
931 | process_answer(call); |
1006 | process_answer(call); |
932 | 1007 | ||
933 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
1008 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
934 | 1009 | ||
935 | atomic_dec(&TASK->active_calls); |
1010 | atomic_dec(&TASK->active_calls); |
936 | 1011 | ||
937 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
1012 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
938 | ipc_call_free(call); |
1013 | ipc_call_free(call); |
939 | goto restart; |
1014 | goto restart; |
940 | } |
1015 | } |
941 | 1016 | ||
942 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
1017 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
943 | ipc_call_free(call); |
1018 | ipc_call_free(call); |
944 | 1019 | ||
945 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
1020 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
946 | } |
1021 | } |
947 | 1022 | ||
948 | if (process_request(&TASK->answerbox, call)) |
1023 | if (process_request(&TASK->answerbox, call)) |
949 | goto restart; |
1024 | goto restart; |
950 | 1025 | ||
951 | /* Include phone address('id') of the caller in the request, |
1026 | /* Include phone address('id') of the caller in the request, |
952 | * copy whole call->data, not only call->data.args */ |
1027 | * copy whole call->data, not only call->data.args */ |
953 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
1028 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
954 | return 0; |
1029 | return 0; |
955 | } |
1030 | } |
956 | return (unative_t)call; |
1031 | return (unative_t)call; |
957 | } |
1032 | } |
958 | 1033 | ||
959 | /** Connect an IRQ handler to a task. |
1034 | /** Connect an IRQ handler to a task. |
960 | * |
1035 | * |
961 | * @param inr IRQ number. |
1036 | * @param inr IRQ number. |
962 | * @param devno Device number. |
1037 | * @param devno Device number. |
963 | * @param method Method to be associated with the notification. |
1038 | * @param method Method to be associated with the notification. |
964 | * @param ucode Uspace pointer to the top-half pseudocode. |
1039 | * @param ucode Uspace pointer to the top-half pseudocode. |
965 | * |
1040 | * |
966 | * @return EPERM or a return code returned by ipc_irq_register(). |
1041 | * @return EPERM or a return code returned by ipc_irq_register(). |
967 | */ |
1042 | */ |
968 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
1043 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
969 | irq_code_t *ucode) |
1044 | irq_code_t *ucode) |
970 | { |
1045 | { |
971 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1046 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
972 | return EPERM; |
1047 | return EPERM; |
973 | 1048 | ||
974 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
1049 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
975 | } |
1050 | } |
976 | 1051 | ||
977 | /** Disconnect an IRQ handler from a task. |
1052 | /** Disconnect an IRQ handler from a task. |
978 | * |
1053 | * |
979 | * @param inr IRQ number. |
1054 | * @param inr IRQ number. |
980 | * @param devno Device number. |
1055 | * @param devno Device number. |
981 | * |
1056 | * |
982 | * @return Zero on success or EPERM on error.. |
1057 | * @return Zero on success or EPERM on error.. |
983 | */ |
1058 | */ |
984 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
1059 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
985 | { |
1060 | { |
986 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
1061 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
987 | return EPERM; |
1062 | return EPERM; |
988 | 1063 | ||
989 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
1064 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
990 | 1065 | ||
991 | return 0; |
1066 | return 0; |
992 | } |
1067 | } |
993 | 1068 | ||
994 | #include <console/klog.h> |
1069 | #include <console/klog.h> |
995 | 1070 | ||
996 | /** |
1071 | /** |
997 | * Syscall connect to a task by id. |
1072 | * Syscall connect to a task by id. |
998 | * |
1073 | * |
999 | * @return Phone id on success, or negative error code. |
1074 | * @return Phone id on success, or negative error code. |
1000 | */ |
1075 | */ |
1001 | unative_t sys_ipc_connect_task(sysarg64_t *uspace_taskid_arg) |
1076 | unative_t sys_ipc_connect_task(sysarg64_t *uspace_taskid_arg) |
1002 | { |
1077 | { |
1003 | sysarg64_t taskid_arg; |
1078 | sysarg64_t taskid_arg; |
1004 | int rc; |
1079 | int rc; |
1005 | 1080 | ||
1006 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
1081 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
1007 | if (rc != 0) |
1082 | if (rc != 0) |
1008 | return (unative_t) rc; |
1083 | return (unative_t) rc; |
1009 | 1084 | ||
1010 | klog_printf("sys_ipc_connect_kbox(%lld, %d)", taskid_arg.value); |
1085 | klog_printf("sys_ipc_connect_kbox(%lld, %d)", taskid_arg.value); |
1011 | 1086 | ||
1012 | return ipc_connect_task(taskid_arg.value); |
1087 | return ipc_connect_task(taskid_arg.value); |
1013 | } |
1088 | } |
1014 | 1089 | ||
1015 | /** @} |
1090 | /** @} |
1016 | */ |
1091 | */ |
1017 | 1092 |