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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 | /** Maximum buffer size allowed for IPC_M_DATA_SEND requests. */ |
52 | /** Maximum buffer size allowed for IPC_M_DATA_SEND requests. */ |
53 | #define DATA_SEND_LIMIT (64 * 1024) |
53 | #define DATA_SEND_LIMIT (64 * 1024) |
54 | 54 | ||
55 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
55 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
56 | { \ |
56 | { \ |
57 | if (phoneid > IPC_MAX_PHONES) { \ |
57 | if (phoneid > IPC_MAX_PHONES) { \ |
58 | err; \ |
58 | err; \ |
59 | } \ |
59 | } \ |
60 | phone = &TASK->phones[phoneid]; \ |
60 | phone = &TASK->phones[phoneid]; \ |
61 | } |
61 | } |
62 | 62 | ||
63 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
63 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
64 | 64 | ||
65 | /** Decide if the method is a system method. |
65 | /** Decide if the method is a system method. |
66 | * |
66 | * |
67 | * @param method Method to be decided. |
67 | * @param method Method to be decided. |
68 | * |
68 | * |
69 | * @return Return 1 if the method is a system method. |
69 | * @return Return 1 if the method is a system method. |
70 | * Otherwise return 0. |
70 | * Otherwise return 0. |
71 | */ |
71 | */ |
72 | static inline int is_system_method(unative_t method) |
72 | static inline int is_system_method(unative_t method) |
73 | { |
73 | { |
74 | if (method <= IPC_M_LAST_SYSTEM) |
74 | if (method <= IPC_M_LAST_SYSTEM) |
75 | return 1; |
75 | return 1; |
76 | return 0; |
76 | return 0; |
77 | } |
77 | } |
78 | 78 | ||
79 | /** Decide if the message with this method is forwardable. |
79 | /** Decide if the message with this method is forwardable. |
80 | * |
80 | * |
81 | * - some system messages may be forwarded, for some of them |
81 | * - some system messages may be forwarded, for some of them |
82 | * it is useless |
82 | * it is useless |
83 | * |
83 | * |
84 | * @param method Method to be decided. |
84 | * @param method Method to be decided. |
85 | * |
85 | * |
86 | * @return Return 1 if the method is forwardable. |
86 | * @return Return 1 if the method is forwardable. |
87 | * Otherwise return 0. |
87 | * Otherwise return 0. |
88 | */ |
88 | */ |
89 | static inline int is_forwardable(unative_t method) |
89 | static inline int is_forwardable(unative_t method) |
90 | { |
90 | { |
91 | switch (method) { |
91 | switch (method) { |
92 | case IPC_M_PHONE_HUNGUP: |
92 | case IPC_M_PHONE_HUNGUP: |
93 | case IPC_M_AS_AREA_SEND: |
93 | case IPC_M_AS_AREA_SEND: |
94 | case IPC_M_AS_AREA_RECV: |
94 | case IPC_M_AS_AREA_RECV: |
95 | case IPC_M_DATA_SEND: |
95 | case IPC_M_DATA_SEND: |
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 | 103 | ||
104 | /*********************************************************************** |
104 | /*********************************************************************** |
105 | * Functions that preprocess answer before sending it to the recepient. |
105 | * Functions that preprocess answer before sending it to the recepient. |
106 | ***********************************************************************/ |
106 | ***********************************************************************/ |
107 | 107 | ||
108 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
108 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
109 | * for answer_preprocess(). |
109 | * for answer_preprocess(). |
110 | * |
110 | * |
111 | * @param call Call structure to be decided. |
111 | * @param call Call structure to be decided. |
112 | * |
112 | * |
113 | * @return Return 1 if the old call contents should be saved. |
113 | * @return Return 1 if the old call contents should be saved. |
114 | * Return 0 otherwise. |
114 | * Return 0 otherwise. |
115 | */ |
115 | */ |
116 | static inline int answer_need_old(call_t *call) |
116 | static inline int answer_need_old(call_t *call) |
117 | { |
117 | { |
118 | switch (IPC_GET_METHOD(call->data)) { |
118 | switch (IPC_GET_METHOD(call->data)) { |
119 | case IPC_M_CONNECT_TO_ME: |
119 | case IPC_M_CONNECT_TO_ME: |
120 | case IPC_M_CONNECT_ME_TO: |
120 | case IPC_M_CONNECT_ME_TO: |
121 | case IPC_M_AS_AREA_SEND: |
121 | case IPC_M_AS_AREA_SEND: |
122 | case IPC_M_AS_AREA_RECV: |
122 | case IPC_M_AS_AREA_RECV: |
123 | case IPC_M_DATA_SEND: |
123 | case IPC_M_DATA_SEND: |
124 | return 1; |
124 | return 1; |
125 | default: |
125 | default: |
126 | return 0; |
126 | return 0; |
127 | } |
127 | } |
128 | } |
128 | } |
129 | 129 | ||
130 | /** Interpret process answer as control information. |
130 | /** Interpret process answer as control information. |
131 | * |
131 | * |
132 | * This function is called directly after sys_ipc_answer(). |
132 | * This function is called directly after sys_ipc_answer(). |
133 | * |
133 | * |
134 | * @param answer Call structure with the answer. |
134 | * @param answer Call structure with the answer. |
135 | * @param olddata Saved data of the request. |
135 | * @param olddata Saved data of the request. |
136 | * |
136 | * |
137 | * @return Return 0 on success or an error code. |
137 | * @return Return 0 on success or an error code. |
138 | */ |
138 | */ |
139 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
139 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
140 | { |
140 | { |
141 | int phoneid; |
141 | int phoneid; |
142 | 142 | ||
143 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
143 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
144 | /* In case of forward, hangup the forwared phone, |
144 | /* In case of forward, hangup the forwared phone, |
145 | * not the originator |
145 | * not the originator |
146 | */ |
146 | */ |
147 | spinlock_lock(&answer->data.phone->lock); |
147 | spinlock_lock(&answer->data.phone->lock); |
148 | spinlock_lock(&TASK->answerbox.lock); |
148 | spinlock_lock(&TASK->answerbox.lock); |
149 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
149 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
150 | list_remove(&answer->data.phone->link); |
150 | list_remove(&answer->data.phone->link); |
151 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
151 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
152 | } |
152 | } |
153 | spinlock_unlock(&TASK->answerbox.lock); |
153 | spinlock_unlock(&TASK->answerbox.lock); |
154 | spinlock_unlock(&answer->data.phone->lock); |
154 | spinlock_unlock(&answer->data.phone->lock); |
155 | } |
155 | } |
156 | 156 | ||
157 | if (!olddata) |
157 | if (!olddata) |
158 | return 0; |
158 | return 0; |
159 | 159 | ||
160 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
160 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
161 | phoneid = IPC_GET_ARG3(*olddata); |
161 | phoneid = IPC_GET_ARG3(*olddata); |
162 | if (IPC_GET_RETVAL(answer->data)) { |
162 | if (IPC_GET_RETVAL(answer->data)) { |
163 | /* The connection was not accepted */ |
163 | /* The connection was not accepted */ |
164 | phone_dealloc(phoneid); |
164 | phone_dealloc(phoneid); |
165 | } else { |
165 | } else { |
166 | /* The connection was accepted */ |
166 | /* The connection was accepted */ |
167 | phone_connect(phoneid, &answer->sender->answerbox); |
167 | phone_connect(phoneid, &answer->sender->answerbox); |
168 | /* Set 'phone hash' as arg3 of response */ |
168 | /* Set 'phone hash' as arg3 of response */ |
169 | IPC_SET_ARG3(answer->data, |
169 | IPC_SET_ARG3(answer->data, |
170 | (unative_t) &TASK->phones[phoneid]); |
170 | (unative_t) &TASK->phones[phoneid]); |
171 | } |
171 | } |
172 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
172 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
173 | /* If the users accepted call, connect */ |
173 | /* If the users accepted call, connect */ |
174 | if (!IPC_GET_RETVAL(answer->data)) { |
174 | if (!IPC_GET_RETVAL(answer->data)) { |
175 | ipc_phone_connect((phone_t *) IPC_GET_ARG3(*olddata), |
175 | ipc_phone_connect((phone_t *) IPC_GET_ARG3(*olddata), |
176 | &TASK->answerbox); |
176 | &TASK->answerbox); |
177 | } |
177 | } |
178 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
178 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
179 | if (!IPC_GET_RETVAL(answer->data)) { |
179 | if (!IPC_GET_RETVAL(answer->data)) { |
180 | /* Accepted, handle as_area receipt */ |
180 | /* Accepted, handle as_area receipt */ |
181 | ipl_t ipl; |
181 | ipl_t ipl; |
182 | int rc; |
182 | int rc; |
183 | as_t *as; |
183 | as_t *as; |
184 | 184 | ||
185 | ipl = interrupts_disable(); |
185 | ipl = interrupts_disable(); |
186 | spinlock_lock(&answer->sender->lock); |
186 | spinlock_lock(&answer->sender->lock); |
187 | as = answer->sender->as; |
187 | as = answer->sender->as; |
188 | spinlock_unlock(&answer->sender->lock); |
188 | spinlock_unlock(&answer->sender->lock); |
189 | interrupts_restore(ipl); |
189 | interrupts_restore(ipl); |
190 | 190 | ||
191 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
191 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
192 | IPC_GET_ARG2(*olddata), AS, |
192 | IPC_GET_ARG2(*olddata), AS, |
193 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
193 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
194 | IPC_SET_RETVAL(answer->data, rc); |
194 | IPC_SET_RETVAL(answer->data, rc); |
195 | return rc; |
195 | return rc; |
196 | } |
196 | } |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
199 | ipl_t ipl; |
199 | ipl_t ipl; |
200 | as_t *as; |
200 | as_t *as; |
201 | int rc; |
201 | int rc; |
202 | 202 | ||
203 | ipl = interrupts_disable(); |
203 | ipl = interrupts_disable(); |
204 | spinlock_lock(&answer->sender->lock); |
204 | spinlock_lock(&answer->sender->lock); |
205 | as = answer->sender->as; |
205 | as = answer->sender->as; |
206 | spinlock_unlock(&answer->sender->lock); |
206 | spinlock_unlock(&answer->sender->lock); |
207 | interrupts_restore(ipl); |
207 | interrupts_restore(ipl); |
208 | 208 | ||
209 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
209 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
210 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
210 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
211 | IPC_GET_ARG2(answer->data)); |
211 | IPC_GET_ARG2(answer->data)); |
212 | IPC_SET_RETVAL(answer->data, rc); |
212 | IPC_SET_RETVAL(answer->data, rc); |
213 | } |
213 | } |
214 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_SEND) { |
214 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_SEND) { |
215 | if (!IPC_GET_RETVAL(answer->data)) { |
215 | if (!IPC_GET_RETVAL(answer->data)) { |
216 | int rc; |
216 | int rc; |
217 | uintptr_t dst; |
217 | uintptr_t dst; |
218 | uintptr_t size; |
218 | uintptr_t size; |
219 | 219 | ||
220 | ASSERT(answer->buffer); |
220 | ASSERT(answer->buffer); |
221 | 221 | ||
222 | dst = IPC_GET_ARG1(answer->data); |
222 | dst = IPC_GET_ARG1(answer->data); |
223 | size = IPC_GET_ARG3(answer->data); |
223 | size = IPC_GET_ARG3(answer->data); |
224 | 224 | ||
225 | rc = copy_to_uspace((void *) dst, answer->buffer, size); |
225 | rc = copy_to_uspace((void *) dst, answer->buffer, size); |
226 | if (rc != 0) |
226 | if (rc != 0) |
227 | IPC_SET_RETVAL(answer->data, rc); |
227 | IPC_SET_RETVAL(answer->data, rc); |
228 | free(answer->buffer); |
228 | free(answer->buffer); |
229 | answer->buffer = NULL; |
229 | answer->buffer = NULL; |
230 | } |
230 | } |
231 | } |
231 | } |
232 | return 0; |
232 | return 0; |
233 | } |
233 | } |
234 | 234 | ||
235 | /** Called before the request is sent. |
235 | /** Called before the request is sent. |
236 | * |
236 | * |
237 | * @param call Call structure with the request. |
237 | * @param call Call structure with the request. |
238 | * |
238 | * |
239 | * @return Return 0 on success, ELIMIT or EPERM on error. |
239 | * @return Return 0 on success, ELIMIT or EPERM on error. |
240 | */ |
240 | */ |
241 | static int request_preprocess(call_t *call) |
241 | static int request_preprocess(call_t *call) |
242 | { |
242 | { |
243 | int newphid; |
243 | int newphid; |
244 | size_t size; |
244 | size_t size; |
245 | uintptr_t src; |
245 | uintptr_t src; |
246 | int rc; |
246 | int rc; |
247 | 247 | ||
248 | switch (IPC_GET_METHOD(call->data)) { |
248 | switch (IPC_GET_METHOD(call->data)) { |
249 | case IPC_M_CONNECT_ME_TO: |
249 | case IPC_M_CONNECT_ME_TO: |
250 | newphid = phone_alloc(); |
250 | newphid = phone_alloc(); |
251 | if (newphid < 0) |
251 | if (newphid < 0) |
252 | return ELIMIT; |
252 | return ELIMIT; |
253 | /* Set arg3 for server */ |
253 | /* Set arg3 for server */ |
254 | IPC_SET_ARG3(call->data, (unative_t) &TASK->phones[newphid]); |
254 | IPC_SET_ARG3(call->data, (unative_t) &TASK->phones[newphid]); |
255 | call->flags |= IPC_CALL_CONN_ME_TO; |
255 | call->flags |= IPC_CALL_CONN_ME_TO; |
256 | call->priv = newphid; |
256 | call->priv = newphid; |
257 | break; |
257 | break; |
258 | case IPC_M_AS_AREA_SEND: |
258 | case IPC_M_AS_AREA_SEND: |
259 | size = as_get_size(IPC_GET_ARG1(call->data)); |
259 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
260 | if (!size) |
260 | if (!size) |
261 | return EPERM; |
261 | return EPERM; |
262 | IPC_SET_ARG2(call->data, size); |
262 | IPC_SET_ARG2(call->data, size); |
263 | break; |
263 | break; |
264 | case IPC_M_DATA_SEND: |
264 | case IPC_M_DATA_SEND: |
265 | src = IPC_GET_ARG2(call->data); |
265 | src = IPC_GET_ARG2(call->data); |
266 | size = IPC_GET_ARG3(call->data); |
266 | size = IPC_GET_ARG3(call->data); |
267 | 267 | ||
268 | if ((size <= 0) || (size > DATA_SEND_LIMIT)) |
268 | if ((size <= 0) || (size > DATA_SEND_LIMIT)) |
269 | return ELIMIT; |
269 | return ELIMIT; |
270 | 270 | ||
271 | call->buffer = (uint8_t *) malloc(size, 0); |
271 | call->buffer = (uint8_t *) malloc(size, 0); |
272 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
272 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
273 | if (rc != 0) { |
273 | if (rc != 0) { |
274 | free(call->buffer); |
274 | free(call->buffer); |
275 | return rc; |
275 | return rc; |
276 | } |
276 | } |
277 | break; |
277 | break; |
278 | default: |
278 | default: |
279 | break; |
279 | break; |
280 | } |
280 | } |
281 | return 0; |
281 | return 0; |
282 | } |
282 | } |
283 | 283 | ||
284 | /******************************************************************************* |
284 | /******************************************************************************* |
285 | * Functions called to process received call/answer before passing it to uspace. |
285 | * Functions called to process received call/answer before passing it to uspace. |
286 | *******************************************************************************/ |
286 | *******************************************************************************/ |
287 | 287 | ||
288 | /** Do basic kernel processing of received call answer. |
288 | /** Do basic kernel processing of received call answer. |
289 | * |
289 | * |
290 | * @param call Call structure with the answer. |
290 | * @param call Call structure with the answer. |
291 | */ |
291 | */ |
292 | static void process_answer(call_t *call) |
292 | static void process_answer(call_t *call) |
293 | { |
293 | { |
294 | if (IPC_GET_RETVAL(call->data) == EHANGUP && |
294 | if (IPC_GET_RETVAL(call->data) == EHANGUP && |
295 | (call->flags & IPC_CALL_FORWARDED)) |
295 | (call->flags & IPC_CALL_FORWARDED)) |
296 | IPC_SET_RETVAL(call->data, EFORWARD); |
296 | IPC_SET_RETVAL(call->data, EFORWARD); |
297 | 297 | ||
298 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
298 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
299 | if (IPC_GET_RETVAL(call->data)) |
299 | if (IPC_GET_RETVAL(call->data)) |
300 | phone_dealloc(call->priv); |
300 | phone_dealloc(call->priv); |
301 | else |
301 | else |
302 | IPC_SET_ARG3(call->data, call->priv); |
302 | IPC_SET_ARG3(call->data, call->priv); |
303 | } |
303 | } |
304 | } |
304 | } |
305 | 305 | ||
306 | /** Do basic kernel processing of received call request. |
306 | /** Do basic kernel processing of received call request. |
307 | * |
307 | * |
308 | * @param box Destination answerbox structure. |
308 | * @param box Destination answerbox structure. |
309 | * @param call Call structure with the request. |
309 | * @param call Call structure with the request. |
310 | * |
310 | * |
311 | * @return Return 0 if the call should be passed to userspace. |
311 | * @return Return 0 if the call should be passed to userspace. |
312 | * Return -1 if the call should be ignored. |
312 | * Return -1 if the call should be ignored. |
313 | */ |
313 | */ |
314 | static int process_request(answerbox_t *box, call_t *call) |
314 | static int process_request(answerbox_t *box, call_t *call) |
315 | { |
315 | { |
316 | int phoneid; |
316 | int phoneid; |
317 | 317 | ||
318 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
318 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
319 | phoneid = phone_alloc(); |
319 | phoneid = phone_alloc(); |
320 | if (phoneid < 0) { /* Failed to allocate phone */ |
320 | if (phoneid < 0) { /* Failed to allocate phone */ |
321 | IPC_SET_RETVAL(call->data, ELIMIT); |
321 | IPC_SET_RETVAL(call->data, ELIMIT); |
322 | ipc_answer(box, call); |
322 | ipc_answer(box, call); |
323 | return -1; |
323 | return -1; |
324 | } |
324 | } |
325 | IPC_SET_ARG3(call->data, phoneid); |
325 | IPC_SET_ARG3(call->data, phoneid); |
326 | } |
326 | } |
327 | return 0; |
327 | return 0; |
328 | } |
328 | } |
329 | 329 | ||
330 | /** Make a fast call over IPC, wait for reply and return to user. |
330 | /** Make a fast call over IPC, wait for reply and return to user. |
331 | * |
331 | * |
332 | * This function can handle only one argument of payload, but is faster than |
332 | * This function can handle only one argument of payload, but is faster than |
333 | * the generic function (i.e. sys_ipc_call_sync()). |
333 | * the generic function (i.e. sys_ipc_call_sync()). |
334 | * |
334 | * |
335 | * @param phoneid Phone handle for the call. |
335 | * @param phoneid Phone handle for the call. |
336 | * @param method Method of the call. |
336 | * @param method Method of the call. |
337 | * @param arg1 Service-defined payload argument. |
337 | * @param arg1 Service-defined payload argument. |
338 | * @param data Address of userspace structure where the reply call will |
338 | * @param data Address of userspace structure where the reply call will |
339 | * be stored. |
339 | * be stored. |
340 | * |
340 | * |
341 | * @return Returns 0 on success. |
341 | * @return Returns 0 on success. |
342 | * Return ENOENT if there is no such phone handle. |
342 | * Return ENOENT if there is no such phone handle. |
343 | */ |
343 | */ |
344 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
344 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
345 | unative_t arg1, ipc_data_t *data) |
345 | unative_t arg1, ipc_data_t *data) |
346 | { |
346 | { |
347 | call_t call; |
347 | call_t call; |
348 | phone_t *phone; |
348 | phone_t *phone; |
349 | int res; |
349 | int res; |
350 | 350 | ||
351 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
351 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
352 | 352 | ||
353 | ipc_call_static_init(&call); |
353 | ipc_call_static_init(&call); |
354 | IPC_SET_METHOD(call.data, method); |
354 | IPC_SET_METHOD(call.data, method); |
355 | IPC_SET_ARG1(call.data, arg1); |
355 | IPC_SET_ARG1(call.data, arg1); |
356 | 356 | ||
357 | if (!(res = request_preprocess(&call))) { |
357 | if (!(res = request_preprocess(&call))) { |
358 | ipc_call_sync(phone, &call); |
358 | ipc_call_sync(phone, &call); |
359 | process_answer(&call); |
359 | process_answer(&call); |
360 | } else { |
360 | } else { |
361 | IPC_SET_RETVAL(call.data, res); |
361 | IPC_SET_RETVAL(call.data, res); |
362 | } |
362 | } |
363 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
363 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
364 | 364 | ||
365 | return 0; |
365 | return 0; |
366 | } |
366 | } |
367 | 367 | ||
368 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
368 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
369 | * |
369 | * |
370 | * @param phoneid Phone handle for the call. |
370 | * @param phoneid Phone handle for the call. |
371 | * @param question Userspace address of call data with the request. |
371 | * @param question Userspace address of call data with the request. |
372 | * @param reply Userspace address of call data where to store the |
372 | * @param reply Userspace address of call data where to store the |
373 | * answer. |
373 | * answer. |
374 | * |
374 | * |
375 | * @return Zero on success or an error code. |
375 | * @return Zero on success or an error code. |
376 | */ |
376 | */ |
377 | unative_t sys_ipc_call_sync(unative_t phoneid, ipc_data_t *question, |
377 | unative_t sys_ipc_call_sync(unative_t phoneid, ipc_data_t *question, |
378 | ipc_data_t *reply) |
378 | ipc_data_t *reply) |
379 | { |
379 | { |
380 | call_t call; |
380 | call_t call; |
381 | phone_t *phone; |
381 | phone_t *phone; |
382 | int res; |
382 | int res; |
383 | int rc; |
383 | int rc; |
384 | 384 | ||
385 | ipc_call_static_init(&call); |
385 | ipc_call_static_init(&call); |
386 | rc = copy_from_uspace(&call.data.args, &question->args, |
386 | rc = copy_from_uspace(&call.data.args, &question->args, |
387 | sizeof(call.data.args)); |
387 | sizeof(call.data.args)); |
388 | if (rc != 0) |
388 | if (rc != 0) |
389 | return (unative_t) rc; |
389 | return (unative_t) rc; |
390 | 390 | ||
391 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
391 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
392 | 392 | ||
393 | if (!(res = request_preprocess(&call))) { |
393 | if (!(res = request_preprocess(&call))) { |
394 | ipc_call_sync(phone, &call); |
394 | ipc_call_sync(phone, &call); |
395 | process_answer(&call); |
395 | process_answer(&call); |
396 | } else |
396 | } else |
397 | IPC_SET_RETVAL(call.data, res); |
397 | IPC_SET_RETVAL(call.data, res); |
398 | 398 | ||
399 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
399 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
400 | if (rc != 0) |
400 | if (rc != 0) |
401 | return rc; |
401 | return rc; |
402 | 402 | ||
403 | return 0; |
403 | return 0; |
404 | } |
404 | } |
405 | 405 | ||
406 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
406 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
407 | * |
407 | * |
408 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
408 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
409 | */ |
409 | */ |
410 | static int check_call_limit(void) |
410 | static int check_call_limit(void) |
411 | { |
411 | { |
412 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
412 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
413 | atomic_dec(&TASK->active_calls); |
413 | atomic_dec(&TASK->active_calls); |
414 | return -1; |
414 | return -1; |
415 | } |
415 | } |
416 | return 0; |
416 | return 0; |
417 | } |
417 | } |
418 | 418 | ||
419 | /** Make a fast asynchronous call over IPC. |
419 | /** Make a fast asynchronous call over IPC. |
420 | * |
420 | * |
421 | * This function can only handle two arguments of payload, but is faster than |
421 | * This function can only handle two arguments of payload, but is faster than |
422 | * the generic function sys_ipc_call_async(). |
422 | * the generic function sys_ipc_call_async(). |
423 | * |
423 | * |
424 | * @param phoneid Phone handle for the call. |
424 | * @param phoneid Phone handle for the call. |
425 | * @param method Method of the call. |
425 | * @param method Method of the call. |
426 | * @param arg1 Service-defined payload argument. |
426 | * @param arg1 Service-defined payload argument. |
427 | * @param arg2 Service-defined payload argument. |
427 | * @param arg2 Service-defined payload argument. |
428 | * |
428 | * |
429 | * @return Return call hash on success. |
429 | * @return Return call hash on success. |
430 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
430 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
431 | * IPC_CALLRET_TEMPORARY if there are too many pending |
431 | * IPC_CALLRET_TEMPORARY if there are too many pending |
432 | * asynchronous requests; answers should be handled first. |
432 | * asynchronous requests; answers should be handled first. |
433 | */ |
433 | */ |
434 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
434 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
435 | unative_t arg1, unative_t arg2) |
435 | unative_t arg1, unative_t arg2) |
436 | { |
436 | { |
437 | call_t *call; |
437 | call_t *call; |
438 | phone_t *phone; |
438 | phone_t *phone; |
439 | int res; |
439 | int res; |
440 | 440 | ||
441 | if (check_call_limit()) |
441 | if (check_call_limit()) |
442 | return IPC_CALLRET_TEMPORARY; |
442 | return IPC_CALLRET_TEMPORARY; |
443 | 443 | ||
444 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
444 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
445 | 445 | ||
446 | call = ipc_call_alloc(0); |
446 | call = ipc_call_alloc(0); |
447 | IPC_SET_METHOD(call->data, method); |
447 | IPC_SET_METHOD(call->data, method); |
448 | IPC_SET_ARG1(call->data, arg1); |
448 | IPC_SET_ARG1(call->data, arg1); |
449 | IPC_SET_ARG2(call->data, arg2); |
449 | IPC_SET_ARG2(call->data, arg2); |
450 | IPC_SET_ARG3(call->data, 0); |
450 | IPC_SET_ARG3(call->data, 0); |
451 | 451 | ||
452 | if (!(res = request_preprocess(call))) |
452 | if (!(res = request_preprocess(call))) |
453 | ipc_call(phone, call); |
453 | ipc_call(phone, call); |
454 | else |
454 | else |
455 | ipc_backsend_err(phone, call, res); |
455 | ipc_backsend_err(phone, call, res); |
456 | 456 | ||
457 | return (unative_t) call; |
457 | return (unative_t) call; |
458 | } |
458 | } |
459 | 459 | ||
460 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
460 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
461 | * |
461 | * |
462 | * @param phoneid Phone handle for the call. |
462 | * @param phoneid Phone handle for the call. |
463 | * @param data Userspace address of call data with the request. |
463 | * @param data Userspace address of call data with the request. |
464 | * |
464 | * |
465 | * @return See sys_ipc_call_async_fast(). |
465 | * @return See sys_ipc_call_async_fast(). |
466 | */ |
466 | */ |
467 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
467 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
468 | { |
468 | { |
469 | call_t *call; |
469 | call_t *call; |
470 | phone_t *phone; |
470 | phone_t *phone; |
471 | int res; |
471 | int res; |
472 | int rc; |
472 | int rc; |
473 | 473 | ||
474 | if (check_call_limit()) |
474 | if (check_call_limit()) |
475 | return IPC_CALLRET_TEMPORARY; |
475 | return IPC_CALLRET_TEMPORARY; |
476 | 476 | ||
477 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
477 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
478 | 478 | ||
479 | call = ipc_call_alloc(0); |
479 | call = ipc_call_alloc(0); |
480 | rc = copy_from_uspace(&call->data.args, &data->args, |
480 | rc = copy_from_uspace(&call->data.args, &data->args, |
481 | sizeof(call->data.args)); |
481 | sizeof(call->data.args)); |
482 | if (rc != 0) { |
482 | if (rc != 0) { |
483 | ipc_call_free(call); |
483 | ipc_call_free(call); |
484 | return (unative_t) rc; |
484 | return (unative_t) rc; |
485 | } |
485 | } |
486 | if (!(res = request_preprocess(call))) |
486 | if (!(res = request_preprocess(call))) |
487 | ipc_call(phone, call); |
487 | ipc_call(phone, call); |
488 | else |
488 | else |
489 | ipc_backsend_err(phone, call, res); |
489 | ipc_backsend_err(phone, call, res); |
490 | 490 | ||
491 | return (unative_t) call; |
491 | return (unative_t) call; |
492 | } |
492 | } |
493 | 493 | ||
494 | /** Forward a received call to another destination. |
494 | /** Forward a received call to another destination. |
495 | * |
495 | * |
496 | * @param callid Hash of the call to forward. |
496 | * @param callid Hash of the call to forward. |
497 | * @param phoneid Phone handle to use for forwarding. |
497 | * @param phoneid Phone handle to use for forwarding. |
498 | * @param method New method to use for the forwarded call. |
498 | * @param method New method to use for the forwarded call. |
499 | * @param arg1 New value of the first argument for the forwarded call. |
499 | * @param arg1 New value of the first argument for the forwarded call. |
500 | * |
500 | * |
501 | * @return Return 0 on succes, otherwise return an error code. |
501 | * @return Return 0 on succes, otherwise return an error code. |
502 | * |
502 | * |
503 | * In case the original method is a system method, ARG1 and ARG2 are overwritten |
503 | * In case the original method is a system method, ARG1 and ARG2 are overwritten |
504 | * in the forwarded message with the new method and the new arg1, respectively. |
504 | * in the forwarded message with the new method and the new arg1, respectively. |
505 | * Otherwise the METHOD and ARG1 are rewritten with the new method and arg1, |
505 | * Otherwise the METHOD and ARG1 are rewritten with the new method and arg1, |
506 | * respectively. |
506 | * respectively. |
507 | * |
507 | * |
508 | * Warning: If implementing non-fast version, make sure that |
508 | * Warning: If implementing non-fast version, make sure that |
509 | * ARG3 is not rewritten for certain system IPC |
509 | * ARG3 is not rewritten for certain system IPC |
510 | */ |
510 | */ |
511 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
511 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
512 | unative_t method, unative_t arg1) |
512 | unative_t method, unative_t arg1) |
513 | { |
513 | { |
514 | call_t *call; |
514 | call_t *call; |
515 | phone_t *phone; |
515 | phone_t *phone; |
516 | 516 | ||
517 | call = get_call(callid); |
517 | call = get_call(callid); |
518 | if (!call) |
518 | if (!call) |
519 | return ENOENT; |
519 | return ENOENT; |
520 | 520 | ||
521 | call->flags |= IPC_CALL_FORWARDED; |
521 | call->flags |= IPC_CALL_FORWARDED; |
522 | 522 | ||
523 | GET_CHECK_PHONE(phone, phoneid, { |
523 | GET_CHECK_PHONE(phone, phoneid, { |
524 | IPC_SET_RETVAL(call->data, EFORWARD); |
524 | IPC_SET_RETVAL(call->data, EFORWARD); |
525 | ipc_answer(&TASK->answerbox, call); |
525 | ipc_answer(&TASK->answerbox, call); |
526 | return ENOENT; |
526 | return ENOENT; |
527 | }); |
527 | }); |
528 | 528 | ||
529 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
529 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
530 | IPC_SET_RETVAL(call->data, EFORWARD); |
530 | IPC_SET_RETVAL(call->data, EFORWARD); |
531 | ipc_answer(&TASK->answerbox, call); |
531 | ipc_answer(&TASK->answerbox, call); |
532 | return EPERM; |
532 | return EPERM; |
533 | } |
533 | } |
534 | 534 | ||
535 | /* Userspace is not allowed to change method of system methods |
535 | /* Userspace is not allowed to change method of system methods |
536 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
536 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
537 | */ |
537 | */ |
538 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
538 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
539 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
539 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
540 | phone_dealloc(IPC_GET_ARG3(call->data)); |
540 | phone_dealloc(IPC_GET_ARG3(call->data)); |
541 | 541 | ||
542 | IPC_SET_ARG1(call->data, method); |
542 | IPC_SET_ARG1(call->data, method); |
543 | IPC_SET_ARG2(call->data, arg1); |
543 | IPC_SET_ARG2(call->data, arg1); |
544 | } else { |
544 | } else { |
545 | IPC_SET_METHOD(call->data, method); |
545 | IPC_SET_METHOD(call->data, method); |
546 | IPC_SET_ARG1(call->data, arg1); |
546 | IPC_SET_ARG1(call->data, arg1); |
547 | } |
547 | } |
548 | 548 | ||
549 | return ipc_forward(call, phone, &TASK->answerbox); |
549 | return ipc_forward(call, phone, &TASK->answerbox); |
550 | } |
550 | } |
551 | 551 | ||
552 | /** Answer an IPC call - fast version. |
552 | /** Answer an IPC call - fast version. |
553 | * |
553 | * |
554 | * This function can handle only two return arguments of payload, but is faster |
554 | * This function can handle only two return arguments of payload, but is faster |
555 | * than the generic sys_ipc_answer(). |
555 | * than the generic sys_ipc_answer(). |
556 | * |
556 | * |
557 | * @param callid Hash of the call to be answered. |
557 | * @param callid Hash of the call to be answered. |
558 | * @param retval Return value of the answer. |
558 | * @param retval Return value of the answer. |
559 | * @param arg1 Service-defined return value. |
559 | * @param arg1 Service-defined return value. |
560 | * @param arg2 Service-defined return value. |
560 | * @param arg2 Service-defined return value. |
561 | * |
561 | * |
562 | * @return Return 0 on success, otherwise return an error code. |
562 | * @return Return 0 on success, otherwise return an error code. |
563 | */ |
563 | */ |
564 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
564 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
565 | unative_t arg1, unative_t arg2) |
565 | unative_t arg1, unative_t arg2) |
566 | { |
566 | { |
567 | call_t *call; |
567 | call_t *call; |
568 | ipc_data_t saved_data; |
568 | ipc_data_t saved_data; |
569 | int saveddata = 0; |
569 | int saveddata = 0; |
570 | int rc; |
570 | int rc; |
571 | 571 | ||
572 | /* Do not answer notification callids */ |
572 | /* Do not answer notification callids */ |
573 | if (callid & IPC_CALLID_NOTIFICATION) |
573 | if (callid & IPC_CALLID_NOTIFICATION) |
574 | return 0; |
574 | return 0; |
575 | 575 | ||
576 | call = get_call(callid); |
576 | call = get_call(callid); |
577 | if (!call) |
577 | if (!call) |
578 | return ENOENT; |
578 | return ENOENT; |
579 | 579 | ||
580 | if (answer_need_old(call)) { |
580 | if (answer_need_old(call)) { |
581 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
581 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
582 | saveddata = 1; |
582 | saveddata = 1; |
583 | } |
583 | } |
584 | 584 | ||
585 | IPC_SET_RETVAL(call->data, retval); |
585 | IPC_SET_RETVAL(call->data, retval); |
586 | IPC_SET_ARG1(call->data, arg1); |
586 | IPC_SET_ARG1(call->data, arg1); |
587 | IPC_SET_ARG2(call->data, arg2); |
587 | IPC_SET_ARG2(call->data, arg2); |
588 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
588 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
589 | 589 | ||
590 | ipc_answer(&TASK->answerbox, call); |
590 | ipc_answer(&TASK->answerbox, call); |
591 | return rc; |
591 | return rc; |
592 | } |
592 | } |
593 | 593 | ||
594 | /** Answer an IPC call. |
594 | /** Answer an IPC call. |
595 | * |
595 | * |
596 | * @param callid Hash of the call to be answered. |
596 | * @param callid Hash of the call to be answered. |
597 | * @param data Userspace address of call data with the answer. |
597 | * @param data Userspace address of call data with the answer. |
598 | * |
598 | * |
599 | * @return Return 0 on success, otherwise return an error code. |
599 | * @return Return 0 on success, otherwise return an error code. |
600 | */ |
600 | */ |
601 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
601 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
602 | { |
602 | { |
603 | call_t *call; |
603 | call_t *call; |
604 | ipc_data_t saved_data; |
604 | ipc_data_t saved_data; |
605 | int saveddata = 0; |
605 | int saveddata = 0; |
606 | int rc; |
606 | int rc; |
607 | 607 | ||
608 | /* Do not answer notification callids */ |
608 | /* Do not answer notification callids */ |
609 | if (callid & IPC_CALLID_NOTIFICATION) |
609 | if (callid & IPC_CALLID_NOTIFICATION) |
610 | return 0; |
610 | return 0; |
611 | 611 | ||
612 | call = get_call(callid); |
612 | call = get_call(callid); |
613 | if (!call) |
613 | if (!call) |
614 | return ENOENT; |
614 | return ENOENT; |
615 | 615 | ||
616 | if (answer_need_old(call)) { |
616 | if (answer_need_old(call)) { |
617 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
617 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
618 | saveddata = 1; |
618 | saveddata = 1; |
619 | } |
619 | } |
620 | rc = copy_from_uspace(&call->data.args, &data->args, |
620 | rc = copy_from_uspace(&call->data.args, &data->args, |
621 | sizeof(call->data.args)); |
621 | sizeof(call->data.args)); |
622 | if (rc != 0) |
622 | if (rc != 0) |
623 | return rc; |
623 | return rc; |
624 | 624 | ||
625 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
625 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
626 | 626 | ||
627 | ipc_answer(&TASK->answerbox, call); |
627 | ipc_answer(&TASK->answerbox, call); |
628 | 628 | ||
629 | return rc; |
629 | return rc; |
630 | } |
630 | } |
631 | 631 | ||
632 | /** Hang up a phone. |
632 | /** Hang up a phone. |
633 | * |
633 | * |
634 | * @param Phone handle of the phone to be hung up. |
634 | * @param Phone handle of the phone to be hung up. |
635 | * |
635 | * |
636 | * @return Return 0 on success or an error code. |
636 | * @return Return 0 on success or an error code. |
637 | */ |
637 | */ |
638 | unative_t sys_ipc_hangup(int phoneid) |
638 | unative_t sys_ipc_hangup(int phoneid) |
639 | { |
639 | { |
640 | phone_t *phone; |
640 | phone_t *phone; |
641 | 641 | ||
642 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
642 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
643 | 643 | ||
644 | if (ipc_phone_hangup(phone)) |
644 | if (ipc_phone_hangup(phone)) |
645 | return -1; |
645 | return -1; |
646 | 646 | ||
647 | return 0; |
647 | return 0; |
648 | } |
648 | } |
649 | 649 | ||
650 | /** Wait for an incoming IPC call or an answer. |
650 | /** Wait for an incoming IPC call or an answer. |
651 | * |
651 | * |
652 | * @param calldata Pointer to buffer where the call/answer data is stored. |
652 | * @param calldata Pointer to buffer where the call/answer data is stored. |
653 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
653 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
654 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
654 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
655 | * for explanation. |
655 | * for explanation. |
656 | * |
656 | * |
657 | * @return Hash of the call. |
657 | * @return Hash of the call. |
658 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
658 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
659 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
659 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
660 | * answer. |
660 | * answer. |
661 | */ |
661 | */ |
662 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
662 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
663 | { |
663 | { |
664 | call_t *call; |
664 | call_t *call; |
665 | 665 | ||
666 | restart: |
666 | restart: |
667 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
667 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
668 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
668 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
669 | if (!call) |
669 | if (!call) |
670 | return 0; |
670 | return 0; |
671 | 671 | ||
672 | if (call->flags & IPC_CALL_NOTIF) { |
672 | if (call->flags & IPC_CALL_NOTIF) { |
673 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
673 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
674 | 674 | ||
675 | /* Set in_phone_hash to the interrupt counter */ |
675 | /* Set in_phone_hash to the interrupt counter */ |
676 | call->data.phone = (void *) call->priv; |
676 | call->data.phone = (void *) call->priv; |
677 | 677 | ||
678 | STRUCT_TO_USPACE(calldata, &call->data); |
678 | STRUCT_TO_USPACE(calldata, &call->data); |
679 | 679 | ||
680 | ipc_call_free(call); |
680 | ipc_call_free(call); |
681 | 681 | ||
682 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
682 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
683 | } |
683 | } |
684 | 684 | ||
685 | if (call->flags & IPC_CALL_ANSWERED) { |
685 | if (call->flags & IPC_CALL_ANSWERED) { |
686 | process_answer(call); |
686 | process_answer(call); |
687 | 687 | ||
688 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
688 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
689 | 689 | ||
690 | atomic_dec(&TASK->active_calls); |
690 | atomic_dec(&TASK->active_calls); |
691 | 691 | ||
692 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
692 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
693 | ipc_call_free(call); |
693 | ipc_call_free(call); |
694 | goto restart; |
694 | goto restart; |
695 | } |
695 | } |
696 | 696 | ||
697 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
697 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
698 | ipc_call_free(call); |
698 | ipc_call_free(call); |
699 | 699 | ||
700 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
700 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
701 | } |
701 | } |
702 | 702 | ||
703 | if (process_request(&TASK->answerbox, call)) |
703 | if (process_request(&TASK->answerbox, call)) |
704 | goto restart; |
704 | goto restart; |
705 | 705 | ||
706 | /* Include phone address('id') of the caller in the request, |
706 | /* Include phone address('id') of the caller in the request, |
707 | * copy whole call->data, not only call->data.args */ |
707 | * copy whole call->data, not only call->data.args */ |
708 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
708 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
709 | return 0; |
709 | return 0; |
710 | } |
710 | } |
711 | return (unative_t)call; |
711 | return (unative_t)call; |
712 | } |
712 | } |
713 | 713 | ||
714 | /** Connect an IRQ handler to a task. |
714 | /** Connect an IRQ handler to a task. |
715 | * |
715 | * |
716 | * @param inr IRQ number. |
716 | * @param inr IRQ number. |
717 | * @param devno Device number. |
717 | * @param devno Device number. |
718 | * @param method Method to be associated with the notification. |
718 | * @param method Method to be associated with the notification. |
719 | * @param ucode Uspace pointer to the top-half pseudocode. |
719 | * @param ucode Uspace pointer to the top-half pseudocode. |
720 | * |
720 | * |
721 | * @return EPERM or a return code returned by ipc_irq_register(). |
721 | * @return EPERM or a return code returned by ipc_irq_register(). |
722 | */ |
722 | */ |
723 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
723 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
724 | irq_code_t *ucode) |
724 | irq_code_t *ucode) |
725 | { |
725 | { |
726 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
726 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
727 | return EPERM; |
727 | return EPERM; |
728 | 728 | ||
729 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
729 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
730 | } |
730 | } |
731 | 731 | ||
732 | /** Disconnect an IRQ handler from a task. |
732 | /** Disconnect an IRQ handler from a task. |
733 | * |
733 | * |
734 | * @param inr IRQ number. |
734 | * @param inr IRQ number. |
735 | * @param devno Device number. |
735 | * @param devno Device number. |
736 | * |
736 | * |
737 | * @return Zero on success or EPERM on error.. |
737 | * @return Zero on success or EPERM on error.. |
738 | */ |
738 | */ |
739 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
739 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
740 | { |
740 | { |
741 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
741 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
742 | return EPERM; |
742 | return EPERM; |
743 | 743 | ||
744 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
744 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
745 | 745 | ||
746 | return 0; |
746 | return 0; |
747 | } |
747 | } |
748 | 748 | ||
749 | /** @} |
749 | /** @} |
750 | */ |
750 | */ |
751 | 751 |