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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 method_is_system(unative_t method) |
72 | static inline int method_is_system(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 method_is_forwardable(unative_t method) |
89 | static inline int method_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 | /* This message is meant only for the original recipient. */ |
93 | /* This message is meant only for the original recipient. */ |
94 | return 0; |
94 | return 0; |
95 | default: |
95 | default: |
96 | return 1; |
96 | return 1; |
97 | } |
97 | } |
98 | } |
98 | } |
99 | 99 | ||
100 | /** Decide if the message with this method is immutable on forward. |
100 | /** Decide if the message with this method is immutable on forward. |
101 | * |
101 | * |
102 | * - some system messages may be forwarded but their content cannot be altered |
102 | * - some system messages may be forwarded but their content cannot be altered |
103 | * |
103 | * |
104 | * @param method Method to be decided. |
104 | * @param method Method to be decided. |
105 | * |
105 | * |
106 | * @return Return 1 if the method is immutable on forward. |
106 | * @return Return 1 if the method is immutable on forward. |
107 | * Otherwise return 0. |
107 | * Otherwise return 0. |
108 | */ |
108 | */ |
109 | static inline int method_is_immutable(unative_t method) |
109 | static inline int method_is_immutable(unative_t method) |
110 | { |
110 | { |
111 | switch (method) { |
111 | switch (method) { |
112 | case IPC_M_AS_AREA_SEND: |
112 | case IPC_M_AS_AREA_SEND: |
113 | case IPC_M_AS_AREA_RECV: |
113 | case IPC_M_AS_AREA_RECV: |
114 | case IPC_M_DATA_SEND: |
114 | case IPC_M_DATA_SEND: |
115 | return 1; |
115 | return 1; |
116 | break; |
116 | break; |
117 | default: |
117 | default: |
118 | return 0; |
118 | return 0; |
119 | } |
119 | } |
120 | } |
120 | } |
121 | 121 | ||
122 | 122 | ||
123 | /*********************************************************************** |
123 | /*********************************************************************** |
124 | * Functions that preprocess answer before sending it to the recepient. |
124 | * Functions that preprocess answer before sending it to the recepient. |
125 | ***********************************************************************/ |
125 | ***********************************************************************/ |
126 | 126 | ||
127 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
127 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
128 | * for answer_preprocess(). |
128 | * for answer_preprocess(). |
129 | * |
129 | * |
130 | * @param call Call structure to be decided. |
130 | * @param call Call structure to be decided. |
131 | * |
131 | * |
132 | * @return Return 1 if the old call contents should be saved. |
132 | * @return Return 1 if the old call contents should be saved. |
133 | * Return 0 otherwise. |
133 | * Return 0 otherwise. |
134 | */ |
134 | */ |
135 | static inline int answer_need_old(call_t *call) |
135 | static inline int answer_need_old(call_t *call) |
136 | { |
136 | { |
137 | switch (IPC_GET_METHOD(call->data)) { |
137 | switch (IPC_GET_METHOD(call->data)) { |
138 | case IPC_M_CONNECT_TO_ME: |
138 | case IPC_M_CONNECT_TO_ME: |
139 | case IPC_M_CONNECT_ME_TO: |
139 | case IPC_M_CONNECT_ME_TO: |
140 | case IPC_M_AS_AREA_SEND: |
140 | case IPC_M_AS_AREA_SEND: |
141 | case IPC_M_AS_AREA_RECV: |
141 | case IPC_M_AS_AREA_RECV: |
142 | case IPC_M_DATA_SEND: |
142 | case IPC_M_DATA_SEND: |
143 | return 1; |
143 | return 1; |
144 | default: |
144 | default: |
145 | return 0; |
145 | return 0; |
146 | } |
146 | } |
147 | } |
147 | } |
148 | 148 | ||
149 | /** Interpret process answer as control information. |
149 | /** Interpret process answer as control information. |
150 | * |
150 | * |
151 | * This function is called directly after sys_ipc_answer(). |
151 | * This function is called directly after sys_ipc_answer(). |
152 | * |
152 | * |
153 | * @param answer Call structure with the answer. |
153 | * @param answer Call structure with the answer. |
154 | * @param olddata Saved data of the request. |
154 | * @param olddata Saved data of the request. |
155 | * |
155 | * |
156 | * @return Return 0 on success or an error code. |
156 | * @return Return 0 on success or an error code. |
157 | */ |
157 | */ |
158 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
158 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
159 | { |
159 | { |
160 | int phoneid; |
160 | int phoneid; |
161 | 161 | ||
162 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
162 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
163 | /* In case of forward, hangup the forwared phone, |
163 | /* In case of forward, hangup the forwared phone, |
164 | * not the originator |
164 | * not the originator |
165 | */ |
165 | */ |
166 | spinlock_lock(&answer->data.phone->lock); |
166 | spinlock_lock(&answer->data.phone->lock); |
167 | spinlock_lock(&TASK->answerbox.lock); |
167 | spinlock_lock(&TASK->answerbox.lock); |
168 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
168 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
169 | list_remove(&answer->data.phone->link); |
169 | list_remove(&answer->data.phone->link); |
170 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
170 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
171 | } |
171 | } |
172 | spinlock_unlock(&TASK->answerbox.lock); |
172 | spinlock_unlock(&TASK->answerbox.lock); |
173 | spinlock_unlock(&answer->data.phone->lock); |
173 | spinlock_unlock(&answer->data.phone->lock); |
174 | } |
174 | } |
175 | 175 | ||
176 | if (!olddata) |
176 | if (!olddata) |
177 | return 0; |
177 | return 0; |
178 | 178 | ||
179 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
179 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
180 | phoneid = IPC_GET_ARG3(*olddata); |
180 | phoneid = IPC_GET_ARG3(*olddata); |
181 | if (IPC_GET_RETVAL(answer->data)) { |
181 | if (IPC_GET_RETVAL(answer->data)) { |
182 | /* The connection was not accepted */ |
182 | /* The connection was not accepted */ |
183 | phone_dealloc(phoneid); |
183 | phone_dealloc(phoneid); |
184 | } else { |
184 | } else { |
185 | /* The connection was accepted */ |
185 | /* The connection was accepted */ |
186 | phone_connect(phoneid, &answer->sender->answerbox); |
186 | phone_connect(phoneid, &answer->sender->answerbox); |
187 | /* Set 'phone hash' as arg3 of response */ |
187 | /* Set 'phone hash' as arg3 of response */ |
188 | IPC_SET_ARG3(answer->data, |
188 | IPC_SET_ARG3(answer->data, |
189 | (unative_t) &TASK->phones[phoneid]); |
189 | (unative_t) &TASK->phones[phoneid]); |
190 | } |
190 | } |
191 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
191 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
192 | /* If the users accepted call, connect */ |
192 | /* If the users accepted call, connect */ |
193 | if (!IPC_GET_RETVAL(answer->data)) { |
193 | if (!IPC_GET_RETVAL(answer->data)) { |
194 | ipc_phone_connect((phone_t *) IPC_GET_ARG3(*olddata), |
194 | ipc_phone_connect((phone_t *) IPC_GET_ARG3(*olddata), |
195 | &TASK->answerbox); |
195 | &TASK->answerbox); |
196 | } |
196 | } |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
198 | if (!IPC_GET_RETVAL(answer->data)) { |
199 | /* Accepted, handle as_area receipt */ |
199 | /* Accepted, handle as_area receipt */ |
200 | ipl_t ipl; |
200 | ipl_t ipl; |
201 | int rc; |
201 | int rc; |
202 | as_t *as; |
202 | as_t *as; |
203 | 203 | ||
204 | ipl = interrupts_disable(); |
204 | ipl = interrupts_disable(); |
205 | spinlock_lock(&answer->sender->lock); |
205 | spinlock_lock(&answer->sender->lock); |
206 | as = answer->sender->as; |
206 | as = answer->sender->as; |
207 | spinlock_unlock(&answer->sender->lock); |
207 | spinlock_unlock(&answer->sender->lock); |
208 | interrupts_restore(ipl); |
208 | interrupts_restore(ipl); |
209 | 209 | ||
210 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
210 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
211 | IPC_GET_ARG2(*olddata), AS, |
211 | IPC_GET_ARG2(*olddata), AS, |
212 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
212 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
213 | IPC_SET_RETVAL(answer->data, rc); |
213 | IPC_SET_RETVAL(answer->data, rc); |
214 | return rc; |
214 | return rc; |
215 | } |
215 | } |
216 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
216 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
217 | if (!IPC_GET_RETVAL(answer->data)) { |
217 | if (!IPC_GET_RETVAL(answer->data)) { |
218 | ipl_t ipl; |
218 | ipl_t ipl; |
219 | as_t *as; |
219 | as_t *as; |
220 | int rc; |
220 | int rc; |
221 | 221 | ||
222 | ipl = interrupts_disable(); |
222 | ipl = interrupts_disable(); |
223 | spinlock_lock(&answer->sender->lock); |
223 | spinlock_lock(&answer->sender->lock); |
224 | as = answer->sender->as; |
224 | as = answer->sender->as; |
225 | spinlock_unlock(&answer->sender->lock); |
225 | spinlock_unlock(&answer->sender->lock); |
226 | interrupts_restore(ipl); |
226 | interrupts_restore(ipl); |
227 | 227 | ||
228 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
228 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
229 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
229 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
230 | IPC_GET_ARG2(answer->data)); |
230 | IPC_GET_ARG2(answer->data)); |
231 | IPC_SET_RETVAL(answer->data, rc); |
231 | IPC_SET_RETVAL(answer->data, rc); |
232 | } |
232 | } |
233 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_SEND) { |
233 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_SEND) { |
234 | if (!IPC_GET_RETVAL(answer->data)) { |
234 | if (!IPC_GET_RETVAL(answer->data)) { |
235 | int rc; |
235 | int rc; |
236 | uintptr_t dst; |
236 | uintptr_t dst; |
237 | uintptr_t size; |
237 | uintptr_t size; |
238 | 238 | ||
239 | ASSERT(answer->buffer); |
239 | ASSERT(answer->buffer); |
240 | 240 | ||
241 | dst = IPC_GET_ARG1(answer->data); |
241 | dst = IPC_GET_ARG1(answer->data); |
242 | size = IPC_GET_ARG3(answer->data); |
242 | size = IPC_GET_ARG3(answer->data); |
243 | 243 | ||
244 | rc = copy_to_uspace((void *) dst, answer->buffer, size); |
244 | rc = copy_to_uspace((void *) dst, answer->buffer, size); |
245 | if (rc != 0) |
245 | if (rc != 0) |
246 | IPC_SET_RETVAL(answer->data, rc); |
246 | IPC_SET_RETVAL(answer->data, rc); |
247 | free(answer->buffer); |
247 | free(answer->buffer); |
248 | answer->buffer = NULL; |
248 | answer->buffer = NULL; |
249 | } |
249 | } |
250 | } |
250 | } |
251 | return 0; |
251 | return 0; |
252 | } |
252 | } |
253 | 253 | ||
254 | /** Called before the request is sent. |
254 | /** Called before the request is sent. |
255 | * |
255 | * |
256 | * @param call Call structure with the request. |
256 | * @param call Call structure with the request. |
257 | * |
257 | * |
258 | * @return Return 0 on success, ELIMIT or EPERM on error. |
258 | * @return Return 0 on success, ELIMIT or EPERM on error. |
259 | */ |
259 | */ |
260 | static int request_preprocess(call_t *call) |
260 | static int request_preprocess(call_t *call) |
261 | { |
261 | { |
262 | int newphid; |
262 | int newphid; |
263 | size_t size; |
263 | size_t size; |
264 | uintptr_t src; |
264 | uintptr_t src; |
265 | int rc; |
265 | int rc; |
266 | 266 | ||
267 | switch (IPC_GET_METHOD(call->data)) { |
267 | switch (IPC_GET_METHOD(call->data)) { |
268 | case IPC_M_CONNECT_ME_TO: |
268 | case IPC_M_CONNECT_ME_TO: |
269 | newphid = phone_alloc(); |
269 | newphid = phone_alloc(); |
270 | if (newphid < 0) |
270 | if (newphid < 0) |
271 | return ELIMIT; |
271 | return ELIMIT; |
272 | /* Set arg3 for server */ |
272 | /* Set arg3 for server */ |
273 | IPC_SET_ARG3(call->data, (unative_t) &TASK->phones[newphid]); |
273 | IPC_SET_ARG3(call->data, (unative_t) &TASK->phones[newphid]); |
274 | call->flags |= IPC_CALL_CONN_ME_TO; |
274 | call->flags |= IPC_CALL_CONN_ME_TO; |
275 | call->priv = newphid; |
275 | call->priv = newphid; |
276 | break; |
276 | break; |
277 | case IPC_M_AS_AREA_SEND: |
277 | case IPC_M_AS_AREA_SEND: |
278 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
278 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
279 | if (!size) |
279 | if (!size) |
280 | return EPERM; |
280 | return EPERM; |
281 | IPC_SET_ARG2(call->data, size); |
281 | IPC_SET_ARG2(call->data, size); |
282 | break; |
282 | break; |
283 | case IPC_M_DATA_SEND: |
283 | case IPC_M_DATA_SEND: |
284 | src = IPC_GET_ARG2(call->data); |
284 | src = IPC_GET_ARG2(call->data); |
285 | size = IPC_GET_ARG3(call->data); |
285 | size = IPC_GET_ARG3(call->data); |
286 | 286 | ||
287 | if ((size <= 0) || (size > DATA_SEND_LIMIT)) |
287 | if ((size <= 0) || (size > DATA_SEND_LIMIT)) |
288 | return ELIMIT; |
288 | return ELIMIT; |
289 | 289 | ||
290 | call->buffer = (uint8_t *) malloc(size, 0); |
290 | call->buffer = (uint8_t *) malloc(size, 0); |
291 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
291 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
292 | if (rc != 0) { |
292 | if (rc != 0) { |
293 | free(call->buffer); |
293 | free(call->buffer); |
294 | return rc; |
294 | return rc; |
295 | } |
295 | } |
296 | break; |
296 | break; |
297 | default: |
297 | default: |
298 | break; |
298 | break; |
299 | } |
299 | } |
300 | return 0; |
300 | return 0; |
301 | } |
301 | } |
302 | 302 | ||
303 | /******************************************************************************* |
303 | /******************************************************************************* |
304 | * Functions called to process received call/answer before passing it to uspace. |
304 | * Functions called to process received call/answer before passing it to uspace. |
305 | *******************************************************************************/ |
305 | *******************************************************************************/ |
306 | 306 | ||
307 | /** Do basic kernel processing of received call answer. |
307 | /** Do basic kernel processing of received call answer. |
308 | * |
308 | * |
309 | * @param call Call structure with the answer. |
309 | * @param call Call structure with the answer. |
310 | */ |
310 | */ |
311 | static void process_answer(call_t *call) |
311 | static void process_answer(call_t *call) |
312 | { |
312 | { |
313 | if (IPC_GET_RETVAL(call->data) == EHANGUP && |
313 | if (IPC_GET_RETVAL(call->data) == EHANGUP && |
314 | (call->flags & IPC_CALL_FORWARDED)) |
314 | (call->flags & IPC_CALL_FORWARDED)) |
315 | IPC_SET_RETVAL(call->data, EFORWARD); |
315 | IPC_SET_RETVAL(call->data, EFORWARD); |
316 | 316 | ||
317 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
317 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
318 | if (IPC_GET_RETVAL(call->data)) |
318 | if (IPC_GET_RETVAL(call->data)) |
319 | phone_dealloc(call->priv); |
319 | phone_dealloc(call->priv); |
320 | else |
320 | else |
321 | IPC_SET_ARG3(call->data, call->priv); |
321 | IPC_SET_ARG3(call->data, call->priv); |
322 | } |
322 | } |
323 | } |
323 | } |
324 | 324 | ||
325 | /** Do basic kernel processing of received call request. |
325 | /** Do basic kernel processing of received call request. |
326 | * |
326 | * |
327 | * @param box Destination answerbox structure. |
327 | * @param box Destination answerbox structure. |
328 | * @param call Call structure with the request. |
328 | * @param call Call structure with the request. |
329 | * |
329 | * |
330 | * @return Return 0 if the call should be passed to userspace. |
330 | * @return Return 0 if the call should be passed to userspace. |
331 | * Return -1 if the call should be ignored. |
331 | * Return -1 if the call should be ignored. |
332 | */ |
332 | */ |
333 | static int process_request(answerbox_t *box, call_t *call) |
333 | static int process_request(answerbox_t *box, call_t *call) |
334 | { |
334 | { |
335 | int phoneid; |
335 | int phoneid; |
336 | 336 | ||
337 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
337 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
338 | phoneid = phone_alloc(); |
338 | phoneid = phone_alloc(); |
339 | if (phoneid < 0) { /* Failed to allocate phone */ |
339 | if (phoneid < 0) { /* Failed to allocate phone */ |
340 | IPC_SET_RETVAL(call->data, ELIMIT); |
340 | IPC_SET_RETVAL(call->data, ELIMIT); |
341 | ipc_answer(box, call); |
341 | ipc_answer(box, call); |
342 | return -1; |
342 | return -1; |
343 | } |
343 | } |
344 | IPC_SET_ARG3(call->data, phoneid); |
344 | IPC_SET_ARG3(call->data, phoneid); |
345 | } |
345 | } |
346 | return 0; |
346 | return 0; |
347 | } |
347 | } |
348 | 348 | ||
349 | /** Make a fast call over IPC, wait for reply and return to user. |
349 | /** Make a fast call over IPC, wait for reply and return to user. |
350 | * |
350 | * |
351 | * This function can handle only one argument of payload, but is faster than |
351 | * This function can handle only three arguments of payload, but is faster than |
352 | * the generic function (i.e. sys_ipc_call_sync()). |
352 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
353 | * |
353 | * |
354 | * @param phoneid Phone handle for the call. |
354 | * @param phoneid Phone handle for the call. |
355 | * @param method Method of the call. |
355 | * @param method Method of the call. |
356 | * @param arg1 Service-defined payload argument. |
356 | * @param arg1 Service-defined payload argument. |
- | 357 | * @param arg2 Service-defined payload argument. |
|
- | 358 | * @param arg3 Service-defined payload argument. |
|
357 | * @param data Address of userspace structure where the reply call will |
359 | * @param data Address of userspace structure where the reply call will |
358 | * be stored. |
360 | * be stored. |
359 | * |
361 | * |
360 | * @return Returns 0 on success. |
362 | * @return Returns 0 on success. |
361 | * Return ENOENT if there is no such phone handle. |
363 | * Return ENOENT if there is no such phone handle. |
362 | */ |
364 | */ |
363 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
365 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
364 | unative_t arg1, ipc_data_t *data) |
366 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
365 | { |
367 | { |
366 | call_t call; |
368 | call_t call; |
367 | phone_t *phone; |
369 | phone_t *phone; |
368 | int res; |
370 | int res; |
369 | 371 | ||
370 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
372 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
371 | 373 | ||
372 | ipc_call_static_init(&call); |
374 | ipc_call_static_init(&call); |
373 | IPC_SET_METHOD(call.data, method); |
375 | IPC_SET_METHOD(call.data, method); |
374 | IPC_SET_ARG1(call.data, arg1); |
376 | IPC_SET_ARG1(call.data, arg1); |
- | 377 | IPC_SET_ARG2(call.data, arg2); |
|
- | 378 | IPC_SET_ARG3(call.data, arg3); |
|
375 | 379 | ||
376 | if (!(res = request_preprocess(&call))) { |
380 | if (!(res = request_preprocess(&call))) { |
377 | ipc_call_sync(phone, &call); |
381 | ipc_call_sync(phone, &call); |
378 | process_answer(&call); |
382 | process_answer(&call); |
379 | } else { |
383 | } else { |
380 | IPC_SET_RETVAL(call.data, res); |
384 | IPC_SET_RETVAL(call.data, res); |
381 | } |
385 | } |
382 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
386 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
383 | 387 | ||
384 | return 0; |
388 | return 0; |
385 | } |
389 | } |
386 | 390 | ||
387 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
391 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
388 | * |
392 | * |
389 | * @param phoneid Phone handle for the call. |
393 | * @param phoneid Phone handle for the call. |
390 | * @param question Userspace address of call data with the request. |
394 | * @param question Userspace address of call data with the request. |
391 | * @param reply Userspace address of call data where to store the |
395 | * @param reply Userspace address of call data where to store the |
392 | * answer. |
396 | * answer. |
393 | * |
397 | * |
394 | * @return Zero on success or an error code. |
398 | * @return Zero on success or an error code. |
395 | */ |
399 | */ |
396 | unative_t sys_ipc_call_sync(unative_t phoneid, ipc_data_t *question, |
400 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
397 | ipc_data_t *reply) |
401 | ipc_data_t *reply) |
398 | { |
402 | { |
399 | call_t call; |
403 | call_t call; |
400 | phone_t *phone; |
404 | phone_t *phone; |
401 | int res; |
405 | int res; |
402 | int rc; |
406 | int rc; |
403 | 407 | ||
404 | ipc_call_static_init(&call); |
408 | ipc_call_static_init(&call); |
405 | rc = copy_from_uspace(&call.data.args, &question->args, |
409 | rc = copy_from_uspace(&call.data.args, &question->args, |
406 | sizeof(call.data.args)); |
410 | sizeof(call.data.args)); |
407 | if (rc != 0) |
411 | if (rc != 0) |
408 | return (unative_t) rc; |
412 | return (unative_t) rc; |
409 | 413 | ||
410 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
414 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
411 | 415 | ||
412 | if (!(res = request_preprocess(&call))) { |
416 | if (!(res = request_preprocess(&call))) { |
413 | ipc_call_sync(phone, &call); |
417 | ipc_call_sync(phone, &call); |
414 | process_answer(&call); |
418 | process_answer(&call); |
415 | } else |
419 | } else |
416 | IPC_SET_RETVAL(call.data, res); |
420 | IPC_SET_RETVAL(call.data, res); |
417 | 421 | ||
418 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
422 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
419 | if (rc != 0) |
423 | if (rc != 0) |
420 | return rc; |
424 | return rc; |
421 | 425 | ||
422 | return 0; |
426 | return 0; |
423 | } |
427 | } |
424 | 428 | ||
425 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
429 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
426 | * |
430 | * |
427 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
431 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
428 | */ |
432 | */ |
429 | static int check_call_limit(void) |
433 | static int check_call_limit(void) |
430 | { |
434 | { |
431 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
435 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
432 | atomic_dec(&TASK->active_calls); |
436 | atomic_dec(&TASK->active_calls); |
433 | return -1; |
437 | return -1; |
434 | } |
438 | } |
435 | return 0; |
439 | return 0; |
436 | } |
440 | } |
437 | 441 | ||
438 | /** Make a fast asynchronous call over IPC. |
442 | /** Make a fast asynchronous call over IPC. |
439 | * |
443 | * |
440 | * This function can only handle two arguments of payload, but is faster than |
444 | * This function can only handle two arguments of payload, but is faster than |
441 | * the generic function sys_ipc_call_async(). |
445 | * the generic function sys_ipc_call_async(). |
442 | * |
446 | * |
443 | * @param phoneid Phone handle for the call. |
447 | * @param phoneid Phone handle for the call. |
444 | * @param method Method of the call. |
448 | * @param method Method of the call. |
445 | * @param arg1 Service-defined payload argument. |
449 | * @param arg1 Service-defined payload argument. |
446 | * @param arg2 Service-defined payload argument. |
450 | * @param arg2 Service-defined payload argument. |
447 | * |
451 | * |
448 | * @return Return call hash on success. |
452 | * @return Return call hash on success. |
449 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
453 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
450 | * IPC_CALLRET_TEMPORARY if there are too many pending |
454 | * IPC_CALLRET_TEMPORARY if there are too many pending |
451 | * asynchronous requests; answers should be handled first. |
455 | * asynchronous requests; answers should be handled first. |
452 | */ |
456 | */ |
453 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
457 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
454 | unative_t arg1, unative_t arg2) |
458 | unative_t arg1, unative_t arg2) |
455 | { |
459 | { |
456 | call_t *call; |
460 | call_t *call; |
457 | phone_t *phone; |
461 | phone_t *phone; |
458 | int res; |
462 | int res; |
459 | 463 | ||
460 | if (check_call_limit()) |
464 | if (check_call_limit()) |
461 | return IPC_CALLRET_TEMPORARY; |
465 | return IPC_CALLRET_TEMPORARY; |
462 | 466 | ||
463 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
467 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
464 | 468 | ||
465 | call = ipc_call_alloc(0); |
469 | call = ipc_call_alloc(0); |
466 | IPC_SET_METHOD(call->data, method); |
470 | IPC_SET_METHOD(call->data, method); |
467 | IPC_SET_ARG1(call->data, arg1); |
471 | IPC_SET_ARG1(call->data, arg1); |
468 | IPC_SET_ARG2(call->data, arg2); |
472 | IPC_SET_ARG2(call->data, arg2); |
469 | IPC_SET_ARG3(call->data, 0); |
473 | IPC_SET_ARG3(call->data, 0); |
470 | 474 | ||
471 | if (!(res = request_preprocess(call))) |
475 | if (!(res = request_preprocess(call))) |
472 | ipc_call(phone, call); |
476 | ipc_call(phone, call); |
473 | else |
477 | else |
474 | ipc_backsend_err(phone, call, res); |
478 | ipc_backsend_err(phone, call, res); |
475 | 479 | ||
476 | return (unative_t) call; |
480 | return (unative_t) call; |
477 | } |
481 | } |
478 | 482 | ||
479 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
483 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
480 | * |
484 | * |
481 | * @param phoneid Phone handle for the call. |
485 | * @param phoneid Phone handle for the call. |
482 | * @param data Userspace address of call data with the request. |
486 | * @param data Userspace address of call data with the request. |
483 | * |
487 | * |
484 | * @return See sys_ipc_call_async_fast(). |
488 | * @return See sys_ipc_call_async_fast(). |
485 | */ |
489 | */ |
486 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
490 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
487 | { |
491 | { |
488 | call_t *call; |
492 | call_t *call; |
489 | phone_t *phone; |
493 | phone_t *phone; |
490 | int res; |
494 | int res; |
491 | int rc; |
495 | int rc; |
492 | 496 | ||
493 | if (check_call_limit()) |
497 | if (check_call_limit()) |
494 | return IPC_CALLRET_TEMPORARY; |
498 | return IPC_CALLRET_TEMPORARY; |
495 | 499 | ||
496 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
500 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
497 | 501 | ||
498 | call = ipc_call_alloc(0); |
502 | call = ipc_call_alloc(0); |
499 | rc = copy_from_uspace(&call->data.args, &data->args, |
503 | rc = copy_from_uspace(&call->data.args, &data->args, |
500 | sizeof(call->data.args)); |
504 | sizeof(call->data.args)); |
501 | if (rc != 0) { |
505 | if (rc != 0) { |
502 | ipc_call_free(call); |
506 | ipc_call_free(call); |
503 | return (unative_t) rc; |
507 | return (unative_t) rc; |
504 | } |
508 | } |
505 | if (!(res = request_preprocess(call))) |
509 | if (!(res = request_preprocess(call))) |
506 | ipc_call(phone, call); |
510 | ipc_call(phone, call); |
507 | else |
511 | else |
508 | ipc_backsend_err(phone, call, res); |
512 | ipc_backsend_err(phone, call, res); |
509 | 513 | ||
510 | return (unative_t) call; |
514 | return (unative_t) call; |
511 | } |
515 | } |
512 | 516 | ||
513 | /** Forward a received call to another destination. |
517 | /** Forward a received call to another destination. |
514 | * |
518 | * |
515 | * @param callid Hash of the call to forward. |
519 | * @param callid Hash of the call to forward. |
516 | * @param phoneid Phone handle to use for forwarding. |
520 | * @param phoneid Phone handle to use for forwarding. |
517 | * @param method New method to use for the forwarded call. |
521 | * @param method New method to use for the forwarded call. |
518 | * @param arg1 New value of the first argument for the forwarded call. |
522 | * @param arg1 New value of the first argument for the forwarded call. |
519 | * |
523 | * |
520 | * @return Return 0 on succes, otherwise return an error code. |
524 | * @return Return 0 on succes, otherwise return an error code. |
521 | * |
525 | * |
522 | * In case the original method is a system method, ARG1 and ARG2 are overwritten |
526 | * In case the original method is a system method, ARG1 and ARG2 are overwritten |
523 | * in the forwarded message with the new method and the new arg1, respectively. |
527 | * in the forwarded message with the new method and the new arg1, respectively. |
524 | * Otherwise the METHOD and ARG1 are rewritten with the new method and arg1, |
528 | * Otherwise the METHOD and ARG1 are rewritten with the new method and arg1, |
525 | * respectively. Also note there is a set of immutable methods, for which the |
529 | * respectively. Also note there is a set of immutable methods, for which the |
526 | * new method and argument is not set and these values are ignored. |
530 | * new method and argument is not set and these values are ignored. |
527 | * |
531 | * |
528 | * Warning: If implementing non-fast version, make sure that |
532 | * Warning: If implementing non-fast version, make sure that |
529 | * ARG3 is not rewritten for certain system IPC |
533 | * ARG3 is not rewritten for certain system IPC |
530 | */ |
534 | */ |
531 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
535 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
532 | unative_t method, unative_t arg1) |
536 | unative_t method, unative_t arg1) |
533 | { |
537 | { |
534 | call_t *call; |
538 | call_t *call; |
535 | phone_t *phone; |
539 | phone_t *phone; |
536 | 540 | ||
537 | call = get_call(callid); |
541 | call = get_call(callid); |
538 | if (!call) |
542 | if (!call) |
539 | return ENOENT; |
543 | return ENOENT; |
540 | 544 | ||
541 | call->flags |= IPC_CALL_FORWARDED; |
545 | call->flags |= IPC_CALL_FORWARDED; |
542 | 546 | ||
543 | GET_CHECK_PHONE(phone, phoneid, { |
547 | GET_CHECK_PHONE(phone, phoneid, { |
544 | IPC_SET_RETVAL(call->data, EFORWARD); |
548 | IPC_SET_RETVAL(call->data, EFORWARD); |
545 | ipc_answer(&TASK->answerbox, call); |
549 | ipc_answer(&TASK->answerbox, call); |
546 | return ENOENT; |
550 | return ENOENT; |
547 | }); |
551 | }); |
548 | 552 | ||
549 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
553 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
550 | IPC_SET_RETVAL(call->data, EFORWARD); |
554 | IPC_SET_RETVAL(call->data, EFORWARD); |
551 | ipc_answer(&TASK->answerbox, call); |
555 | ipc_answer(&TASK->answerbox, call); |
552 | return EPERM; |
556 | return EPERM; |
553 | } |
557 | } |
554 | 558 | ||
555 | /* |
559 | /* |
556 | * Userspace is not allowed to change method of system methods on |
560 | * Userspace is not allowed to change method of system methods on |
557 | * forward, allow changing ARG1 and ARG2 by means of method and arg1. |
561 | * forward, allow changing ARG1 and ARG2 by means of method and arg1. |
558 | * If the method is immutable, don't change anything. |
562 | * If the method is immutable, don't change anything. |
559 | */ |
563 | */ |
560 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
564 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
561 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
565 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
562 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
566 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
563 | phone_dealloc(IPC_GET_ARG3(call->data)); |
567 | phone_dealloc(IPC_GET_ARG3(call->data)); |
564 | 568 | ||
565 | IPC_SET_ARG1(call->data, method); |
569 | IPC_SET_ARG1(call->data, method); |
566 | IPC_SET_ARG2(call->data, arg1); |
570 | IPC_SET_ARG2(call->data, arg1); |
567 | } else { |
571 | } else { |
568 | IPC_SET_METHOD(call->data, method); |
572 | IPC_SET_METHOD(call->data, method); |
569 | IPC_SET_ARG1(call->data, arg1); |
573 | IPC_SET_ARG1(call->data, arg1); |
570 | } |
574 | } |
571 | } |
575 | } |
572 | 576 | ||
573 | return ipc_forward(call, phone, &TASK->answerbox); |
577 | return ipc_forward(call, phone, &TASK->answerbox); |
574 | } |
578 | } |
575 | 579 | ||
576 | /** Answer an IPC call - fast version. |
580 | /** Answer an IPC call - fast version. |
577 | * |
581 | * |
578 | * This function can handle only two return arguments of payload, but is faster |
582 | * This function can handle only two return arguments of payload, but is faster |
579 | * than the generic sys_ipc_answer(). |
583 | * than the generic sys_ipc_answer(). |
580 | * |
584 | * |
581 | * @param callid Hash of the call to be answered. |
585 | * @param callid Hash of the call to be answered. |
582 | * @param retval Return value of the answer. |
586 | * @param retval Return value of the answer. |
583 | * @param arg1 Service-defined return value. |
587 | * @param arg1 Service-defined return value. |
584 | * @param arg2 Service-defined return value. |
588 | * @param arg2 Service-defined return value. |
585 | * |
589 | * |
586 | * @return Return 0 on success, otherwise return an error code. |
590 | * @return Return 0 on success, otherwise return an error code. |
587 | */ |
591 | */ |
588 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
592 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
589 | unative_t arg1, unative_t arg2) |
593 | unative_t arg1, unative_t arg2) |
590 | { |
594 | { |
591 | call_t *call; |
595 | call_t *call; |
592 | ipc_data_t saved_data; |
596 | ipc_data_t saved_data; |
593 | int saveddata = 0; |
597 | int saveddata = 0; |
594 | int rc; |
598 | int rc; |
595 | 599 | ||
596 | /* Do not answer notification callids */ |
600 | /* Do not answer notification callids */ |
597 | if (callid & IPC_CALLID_NOTIFICATION) |
601 | if (callid & IPC_CALLID_NOTIFICATION) |
598 | return 0; |
602 | return 0; |
599 | 603 | ||
600 | call = get_call(callid); |
604 | call = get_call(callid); |
601 | if (!call) |
605 | if (!call) |
602 | return ENOENT; |
606 | return ENOENT; |
603 | 607 | ||
604 | if (answer_need_old(call)) { |
608 | if (answer_need_old(call)) { |
605 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
609 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
606 | saveddata = 1; |
610 | saveddata = 1; |
607 | } |
611 | } |
608 | 612 | ||
609 | IPC_SET_RETVAL(call->data, retval); |
613 | IPC_SET_RETVAL(call->data, retval); |
610 | IPC_SET_ARG1(call->data, arg1); |
614 | IPC_SET_ARG1(call->data, arg1); |
611 | IPC_SET_ARG2(call->data, arg2); |
615 | IPC_SET_ARG2(call->data, arg2); |
612 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
616 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
613 | 617 | ||
614 | ipc_answer(&TASK->answerbox, call); |
618 | ipc_answer(&TASK->answerbox, call); |
615 | return rc; |
619 | return rc; |
616 | } |
620 | } |
617 | 621 | ||
618 | /** Answer an IPC call. |
622 | /** Answer an IPC call. |
619 | * |
623 | * |
620 | * @param callid Hash of the call to be answered. |
624 | * @param callid Hash of the call to be answered. |
621 | * @param data Userspace address of call data with the answer. |
625 | * @param data Userspace address of call data with the answer. |
622 | * |
626 | * |
623 | * @return Return 0 on success, otherwise return an error code. |
627 | * @return Return 0 on success, otherwise return an error code. |
624 | */ |
628 | */ |
625 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
629 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
626 | { |
630 | { |
627 | call_t *call; |
631 | call_t *call; |
628 | ipc_data_t saved_data; |
632 | ipc_data_t saved_data; |
629 | int saveddata = 0; |
633 | int saveddata = 0; |
630 | int rc; |
634 | int rc; |
631 | 635 | ||
632 | /* Do not answer notification callids */ |
636 | /* Do not answer notification callids */ |
633 | if (callid & IPC_CALLID_NOTIFICATION) |
637 | if (callid & IPC_CALLID_NOTIFICATION) |
634 | return 0; |
638 | return 0; |
635 | 639 | ||
636 | call = get_call(callid); |
640 | call = get_call(callid); |
637 | if (!call) |
641 | if (!call) |
638 | return ENOENT; |
642 | return ENOENT; |
639 | 643 | ||
640 | if (answer_need_old(call)) { |
644 | if (answer_need_old(call)) { |
641 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
645 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
642 | saveddata = 1; |
646 | saveddata = 1; |
643 | } |
647 | } |
644 | rc = copy_from_uspace(&call->data.args, &data->args, |
648 | rc = copy_from_uspace(&call->data.args, &data->args, |
645 | sizeof(call->data.args)); |
649 | sizeof(call->data.args)); |
646 | if (rc != 0) |
650 | if (rc != 0) |
647 | return rc; |
651 | return rc; |
648 | 652 | ||
649 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
653 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
650 | 654 | ||
651 | ipc_answer(&TASK->answerbox, call); |
655 | ipc_answer(&TASK->answerbox, call); |
652 | 656 | ||
653 | return rc; |
657 | return rc; |
654 | } |
658 | } |
655 | 659 | ||
656 | /** Hang up a phone. |
660 | /** Hang up a phone. |
657 | * |
661 | * |
658 | * @param Phone handle of the phone to be hung up. |
662 | * @param Phone handle of the phone to be hung up. |
659 | * |
663 | * |
660 | * @return Return 0 on success or an error code. |
664 | * @return Return 0 on success or an error code. |
661 | */ |
665 | */ |
662 | unative_t sys_ipc_hangup(int phoneid) |
666 | unative_t sys_ipc_hangup(int phoneid) |
663 | { |
667 | { |
664 | phone_t *phone; |
668 | phone_t *phone; |
665 | 669 | ||
666 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
670 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
667 | 671 | ||
668 | if (ipc_phone_hangup(phone)) |
672 | if (ipc_phone_hangup(phone)) |
669 | return -1; |
673 | return -1; |
670 | 674 | ||
671 | return 0; |
675 | return 0; |
672 | } |
676 | } |
673 | 677 | ||
674 | /** Wait for an incoming IPC call or an answer. |
678 | /** Wait for an incoming IPC call or an answer. |
675 | * |
679 | * |
676 | * @param calldata Pointer to buffer where the call/answer data is stored. |
680 | * @param calldata Pointer to buffer where the call/answer data is stored. |
677 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
681 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
678 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
682 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
679 | * for explanation. |
683 | * for explanation. |
680 | * |
684 | * |
681 | * @return Hash of the call. |
685 | * @return Hash of the call. |
682 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
686 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
683 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
687 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
684 | * answer. |
688 | * answer. |
685 | */ |
689 | */ |
686 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
690 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
687 | { |
691 | { |
688 | call_t *call; |
692 | call_t *call; |
689 | 693 | ||
690 | restart: |
694 | restart: |
691 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
695 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
692 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
696 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
693 | if (!call) |
697 | if (!call) |
694 | return 0; |
698 | return 0; |
695 | 699 | ||
696 | if (call->flags & IPC_CALL_NOTIF) { |
700 | if (call->flags & IPC_CALL_NOTIF) { |
697 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
701 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
698 | 702 | ||
699 | /* Set in_phone_hash to the interrupt counter */ |
703 | /* Set in_phone_hash to the interrupt counter */ |
700 | call->data.phone = (void *) call->priv; |
704 | call->data.phone = (void *) call->priv; |
701 | 705 | ||
702 | STRUCT_TO_USPACE(calldata, &call->data); |
706 | STRUCT_TO_USPACE(calldata, &call->data); |
703 | 707 | ||
704 | ipc_call_free(call); |
708 | ipc_call_free(call); |
705 | 709 | ||
706 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
710 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
707 | } |
711 | } |
708 | 712 | ||
709 | if (call->flags & IPC_CALL_ANSWERED) { |
713 | if (call->flags & IPC_CALL_ANSWERED) { |
710 | process_answer(call); |
714 | process_answer(call); |
711 | 715 | ||
712 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
716 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
713 | 717 | ||
714 | atomic_dec(&TASK->active_calls); |
718 | atomic_dec(&TASK->active_calls); |
715 | 719 | ||
716 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
720 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
717 | ipc_call_free(call); |
721 | ipc_call_free(call); |
718 | goto restart; |
722 | goto restart; |
719 | } |
723 | } |
720 | 724 | ||
721 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
725 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
722 | ipc_call_free(call); |
726 | ipc_call_free(call); |
723 | 727 | ||
724 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
728 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
725 | } |
729 | } |
726 | 730 | ||
727 | if (process_request(&TASK->answerbox, call)) |
731 | if (process_request(&TASK->answerbox, call)) |
728 | goto restart; |
732 | goto restart; |
729 | 733 | ||
730 | /* Include phone address('id') of the caller in the request, |
734 | /* Include phone address('id') of the caller in the request, |
731 | * copy whole call->data, not only call->data.args */ |
735 | * copy whole call->data, not only call->data.args */ |
732 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
736 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
733 | return 0; |
737 | return 0; |
734 | } |
738 | } |
735 | return (unative_t)call; |
739 | return (unative_t)call; |
736 | } |
740 | } |
737 | 741 | ||
738 | /** Connect an IRQ handler to a task. |
742 | /** Connect an IRQ handler to a task. |
739 | * |
743 | * |
740 | * @param inr IRQ number. |
744 | * @param inr IRQ number. |
741 | * @param devno Device number. |
745 | * @param devno Device number. |
742 | * @param method Method to be associated with the notification. |
746 | * @param method Method to be associated with the notification. |
743 | * @param ucode Uspace pointer to the top-half pseudocode. |
747 | * @param ucode Uspace pointer to the top-half pseudocode. |
744 | * |
748 | * |
745 | * @return EPERM or a return code returned by ipc_irq_register(). |
749 | * @return EPERM or a return code returned by ipc_irq_register(). |
746 | */ |
750 | */ |
747 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
751 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
748 | irq_code_t *ucode) |
752 | irq_code_t *ucode) |
749 | { |
753 | { |
750 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
754 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
751 | return EPERM; |
755 | return EPERM; |
752 | 756 | ||
753 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
757 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
754 | } |
758 | } |
755 | 759 | ||
756 | /** Disconnect an IRQ handler from a task. |
760 | /** Disconnect an IRQ handler from a task. |
757 | * |
761 | * |
758 | * @param inr IRQ number. |
762 | * @param inr IRQ number. |
759 | * @param devno Device number. |
763 | * @param devno Device number. |
760 | * |
764 | * |
761 | * @return Zero on success or EPERM on error.. |
765 | * @return Zero on success or EPERM on error.. |
762 | */ |
766 | */ |
763 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
767 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
764 | { |
768 | { |
765 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
769 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
766 | return EPERM; |
770 | return EPERM; |
767 | 771 | ||
768 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
772 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
769 | 773 | ||
770 | return 0; |
774 | return 0; |
771 | } |
775 | } |
772 | 776 | ||
773 | /** @} |
777 | /** @} |
774 | */ |
778 | */ |
775 | 779 |