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| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2006 Ondrej Palkovsky |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup genericipc |
29 | /** @addtogroup genericipc |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #include <arch.h> |
35 | #include <arch.h> |
| 36 | #include <proc/task.h> |
36 | #include <proc/task.h> |
| 37 | #include <proc/thread.h> |
37 | #include <proc/thread.h> |
| 38 | #include <errno.h> |
38 | #include <errno.h> |
| 39 | #include <memstr.h> |
39 | #include <memstr.h> |
| 40 | #include <debug.h> |
40 | #include <debug.h> |
| 41 | #include <ipc/ipc.h> |
41 | #include <ipc/ipc.h> |
| 42 | #include <ipc/sysipc.h> |
42 | #include <ipc/sysipc.h> |
| 43 | #include <ipc/irq.h> |
43 | #include <ipc/irq.h> |
| 44 | #include <ipc/ipcrsc.h> |
44 | #include <ipc/ipcrsc.h> |
| 45 | #include <ipc/kbox.h> |
45 | #include <ipc/kbox.h> |
| 46 | #include <udebug/udebug_ipc.h> |
46 | #include <udebug/udebug_ipc.h> |
| - | 47 | #include <arch/asm.h> |
|
| 47 | #include <arch/interrupt.h> |
48 | #include <arch/interrupt.h> |
| 48 | #include <syscall/copy.h> |
49 | #include <syscall/copy.h> |
| 49 | #include <security/cap.h> |
50 | #include <security/cap.h> |
| 50 | #include <mm/as.h> |
51 | #include <mm/as.h> |
| 51 | #include <print.h> |
52 | #include <print.h> |
| 52 | 53 | ||
| 53 | /** |
54 | /** |
| 54 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
55 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
| 55 | * requests. |
56 | * requests. |
| 56 | */ |
57 | */ |
| 57 | #define DATA_XFER_LIMIT (64 * 1024) |
58 | #define DATA_XFER_LIMIT (64 * 1024) |
| 58 | 59 | ||
| 59 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
60 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
| 60 | { \ |
61 | { \ |
| 61 | if (phoneid > IPC_MAX_PHONES) { \ |
62 | if (phoneid > IPC_MAX_PHONES) { \ |
| 62 | err; \ |
63 | err; \ |
| 63 | } \ |
64 | } \ |
| 64 | phone = &TASK->phones[phoneid]; \ |
65 | phone = &TASK->phones[phoneid]; \ |
| 65 | } |
66 | } |
| 66 | 67 | ||
| 67 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
68 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
| 68 | 69 | ||
| 69 | /** Decide if the method is a system method. |
70 | /** Decide if the method is a system method. |
| 70 | * |
71 | * |
| 71 | * @param method Method to be decided. |
72 | * @param method Method to be decided. |
| 72 | * |
73 | * |
| 73 | * @return Return 1 if the method is a system method. |
74 | * @return Return 1 if the method is a system method. |
| 74 | * Otherwise return 0. |
75 | * Otherwise return 0. |
| 75 | */ |
76 | */ |
| 76 | static inline int method_is_system(unative_t method) |
77 | static inline int method_is_system(unative_t method) |
| 77 | { |
78 | { |
| 78 | if (method <= IPC_M_LAST_SYSTEM) |
79 | if (method <= IPC_M_LAST_SYSTEM) |
| 79 | return 1; |
80 | return 1; |
| 80 | return 0; |
81 | return 0; |
| 81 | } |
82 | } |
| 82 | 83 | ||
| 83 | /** Decide if the message with this method is forwardable. |
84 | /** Decide if the message with this method is forwardable. |
| 84 | * |
85 | * |
| 85 | * - some system messages may be forwarded, for some of them |
86 | * - some system messages may be forwarded, for some of them |
| 86 | * it is useless |
87 | * it is useless |
| 87 | * |
88 | * |
| 88 | * @param method Method to be decided. |
89 | * @param method Method to be decided. |
| 89 | * |
90 | * |
| 90 | * @return Return 1 if the method is forwardable. |
91 | * @return Return 1 if the method is forwardable. |
| 91 | * Otherwise return 0. |
92 | * Otherwise return 0. |
| 92 | */ |
93 | */ |
| 93 | static inline int method_is_forwardable(unative_t method) |
94 | static inline int method_is_forwardable(unative_t method) |
| 94 | { |
95 | { |
| 95 | switch (method) { |
96 | switch (method) { |
| 96 | case IPC_M_PHONE_HUNGUP: |
97 | case IPC_M_PHONE_HUNGUP: |
| 97 | /* This message is meant only for the original recipient. */ |
98 | /* This message is meant only for the original recipient. */ |
| 98 | return 0; |
99 | return 0; |
| 99 | default: |
100 | default: |
| 100 | return 1; |
101 | return 1; |
| 101 | } |
102 | } |
| 102 | } |
103 | } |
| 103 | 104 | ||
| 104 | /** Decide if the message with this method is immutable on forward. |
105 | /** Decide if the message with this method is immutable on forward. |
| 105 | * |
106 | * |
| 106 | * - some system messages may be forwarded but their content cannot be altered |
107 | * - some system messages may be forwarded but their content cannot be altered |
| 107 | * |
108 | * |
| 108 | * @param method Method to be decided. |
109 | * @param method Method to be decided. |
| 109 | * |
110 | * |
| 110 | * @return Return 1 if the method is immutable on forward. |
111 | * @return Return 1 if the method is immutable on forward. |
| 111 | * Otherwise return 0. |
112 | * Otherwise return 0. |
| 112 | */ |
113 | */ |
| 113 | static inline int method_is_immutable(unative_t method) |
114 | static inline int method_is_immutable(unative_t method) |
| 114 | { |
115 | { |
| 115 | switch (method) { |
116 | switch (method) { |
| 116 | case IPC_M_SHARE_OUT: |
117 | case IPC_M_SHARE_OUT: |
| 117 | case IPC_M_SHARE_IN: |
118 | case IPC_M_SHARE_IN: |
| 118 | case IPC_M_DATA_WRITE: |
119 | case IPC_M_DATA_WRITE: |
| 119 | case IPC_M_DATA_READ: |
120 | case IPC_M_DATA_READ: |
| 120 | return 1; |
121 | return 1; |
| 121 | break; |
122 | break; |
| 122 | default: |
123 | default: |
| 123 | return 0; |
124 | return 0; |
| 124 | } |
125 | } |
| 125 | } |
126 | } |
| 126 | 127 | ||
| 127 | 128 | ||
| 128 | /*********************************************************************** |
129 | /*********************************************************************** |
| 129 | * Functions that preprocess answer before sending it to the recepient. |
130 | * Functions that preprocess answer before sending it to the recepient. |
| 130 | ***********************************************************************/ |
131 | ***********************************************************************/ |
| 131 | 132 | ||
| 132 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
133 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
| 133 | * for answer_preprocess(). |
134 | * for answer_preprocess(). |
| 134 | * |
135 | * |
| 135 | * @param call Call structure to be decided. |
136 | * @param call Call structure to be decided. |
| 136 | * |
137 | * |
| 137 | * @return Return 1 if the old call contents should be saved. |
138 | * @return Return 1 if the old call contents should be saved. |
| 138 | * Return 0 otherwise. |
139 | * Return 0 otherwise. |
| 139 | */ |
140 | */ |
| 140 | static inline int answer_need_old(call_t *call) |
141 | static inline int answer_need_old(call_t *call) |
| 141 | { |
142 | { |
| 142 | switch (IPC_GET_METHOD(call->data)) { |
143 | switch (IPC_GET_METHOD(call->data)) { |
| 143 | case IPC_M_CONNECT_TO_ME: |
144 | case IPC_M_CONNECT_TO_ME: |
| 144 | case IPC_M_CONNECT_ME_TO: |
145 | case IPC_M_CONNECT_ME_TO: |
| 145 | case IPC_M_SHARE_OUT: |
146 | case IPC_M_SHARE_OUT: |
| 146 | case IPC_M_SHARE_IN: |
147 | case IPC_M_SHARE_IN: |
| 147 | case IPC_M_DATA_WRITE: |
148 | case IPC_M_DATA_WRITE: |
| 148 | case IPC_M_DATA_READ: |
149 | case IPC_M_DATA_READ: |
| 149 | return 1; |
150 | return 1; |
| 150 | default: |
151 | default: |
| 151 | return 0; |
152 | return 0; |
| 152 | } |
153 | } |
| 153 | } |
154 | } |
| 154 | 155 | ||
| 155 | /** Interpret process answer as control information. |
156 | /** Interpret process answer as control information. |
| 156 | * |
157 | * |
| 157 | * This function is called directly after sys_ipc_answer(). |
158 | * This function is called directly after sys_ipc_answer(). |
| 158 | * |
159 | * |
| 159 | * @param answer Call structure with the answer. |
160 | * @param answer Call structure with the answer. |
| 160 | * @param olddata Saved data of the request. |
161 | * @param olddata Saved data of the request. |
| 161 | * |
162 | * |
| 162 | * @return Return 0 on success or an error code. |
163 | * @return Return 0 on success or an error code. |
| 163 | */ |
164 | */ |
| 164 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
165 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
| 165 | { |
166 | { |
| 166 | int phoneid; |
167 | int phoneid; |
| 167 | 168 | ||
| 168 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
169 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
| 169 | /* In case of forward, hangup the forwared phone, |
170 | /* In case of forward, hangup the forwared phone, |
| 170 | * not the originator |
171 | * not the originator |
| 171 | */ |
172 | */ |
| 172 | mutex_lock(&answer->data.phone->lock); |
173 | mutex_lock(&answer->data.phone->lock); |
| 173 | spinlock_lock(&TASK->answerbox.lock); |
174 | spinlock_lock(&TASK->answerbox.lock); |
| 174 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
175 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
| 175 | list_remove(&answer->data.phone->link); |
176 | list_remove(&answer->data.phone->link); |
| 176 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
177 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
| 177 | } |
178 | } |
| 178 | spinlock_unlock(&TASK->answerbox.lock); |
179 | spinlock_unlock(&TASK->answerbox.lock); |
| 179 | mutex_unlock(&answer->data.phone->lock); |
180 | mutex_unlock(&answer->data.phone->lock); |
| 180 | } |
181 | } |
| 181 | 182 | ||
| 182 | if (!olddata) |
183 | if (!olddata) |
| 183 | return 0; |
184 | return 0; |
| 184 | 185 | ||
| 185 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
186 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
| 186 | phoneid = IPC_GET_ARG5(*olddata); |
187 | phoneid = IPC_GET_ARG5(*olddata); |
| 187 | if (IPC_GET_RETVAL(answer->data)) { |
188 | if (IPC_GET_RETVAL(answer->data)) { |
| 188 | /* The connection was not accepted */ |
189 | /* The connection was not accepted */ |
| 189 | phone_dealloc(phoneid); |
190 | phone_dealloc(phoneid); |
| 190 | } else { |
191 | } else { |
| 191 | /* The connection was accepted */ |
192 | /* The connection was accepted */ |
| 192 | phone_connect(phoneid, &answer->sender->answerbox); |
193 | phone_connect(phoneid, &answer->sender->answerbox); |
| 193 | /* Set 'phone hash' as arg5 of response */ |
194 | /* Set 'phone hash' as arg5 of response */ |
| 194 | IPC_SET_ARG5(answer->data, |
195 | IPC_SET_ARG5(answer->data, |
| 195 | (unative_t) &TASK->phones[phoneid]); |
196 | (unative_t) &TASK->phones[phoneid]); |
| 196 | } |
197 | } |
| 197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
198 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
| 198 | /* If the users accepted call, connect */ |
199 | /* If the users accepted call, connect */ |
| 199 | if (!IPC_GET_RETVAL(answer->data)) { |
200 | if (!IPC_GET_RETVAL(answer->data)) { |
| 200 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
201 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
| 201 | &TASK->answerbox); |
202 | &TASK->answerbox); |
| 202 | } |
203 | } |
| 203 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
204 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
| 204 | if (!IPC_GET_RETVAL(answer->data)) { |
205 | if (!IPC_GET_RETVAL(answer->data)) { |
| 205 | /* Accepted, handle as_area receipt */ |
206 | /* Accepted, handle as_area receipt */ |
| 206 | ipl_t ipl; |
207 | ipl_t ipl; |
| 207 | int rc; |
208 | int rc; |
| 208 | as_t *as; |
209 | as_t *as; |
| 209 | 210 | ||
| 210 | ipl = interrupts_disable(); |
211 | ipl = interrupts_disable(); |
| 211 | spinlock_lock(&answer->sender->lock); |
212 | spinlock_lock(&answer->sender->lock); |
| 212 | as = answer->sender->as; |
213 | as = answer->sender->as; |
| 213 | spinlock_unlock(&answer->sender->lock); |
214 | spinlock_unlock(&answer->sender->lock); |
| 214 | interrupts_restore(ipl); |
215 | interrupts_restore(ipl); |
| 215 | 216 | ||
| 216 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
217 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
| 217 | IPC_GET_ARG2(*olddata), AS, |
218 | IPC_GET_ARG2(*olddata), AS, |
| 218 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
219 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
| 219 | IPC_SET_RETVAL(answer->data, rc); |
220 | IPC_SET_RETVAL(answer->data, rc); |
| 220 | return rc; |
221 | return rc; |
| 221 | } |
222 | } |
| 222 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
223 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
| 223 | if (!IPC_GET_RETVAL(answer->data)) { |
224 | if (!IPC_GET_RETVAL(answer->data)) { |
| 224 | ipl_t ipl; |
225 | ipl_t ipl; |
| 225 | as_t *as; |
226 | as_t *as; |
| 226 | int rc; |
227 | int rc; |
| 227 | 228 | ||
| 228 | ipl = interrupts_disable(); |
229 | ipl = interrupts_disable(); |
| 229 | spinlock_lock(&answer->sender->lock); |
230 | spinlock_lock(&answer->sender->lock); |
| 230 | as = answer->sender->as; |
231 | as = answer->sender->as; |
| 231 | spinlock_unlock(&answer->sender->lock); |
232 | spinlock_unlock(&answer->sender->lock); |
| 232 | interrupts_restore(ipl); |
233 | interrupts_restore(ipl); |
| 233 | 234 | ||
| 234 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
235 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
| 235 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
236 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
| 236 | IPC_GET_ARG2(answer->data)); |
237 | IPC_GET_ARG2(answer->data)); |
| 237 | IPC_SET_RETVAL(answer->data, rc); |
238 | IPC_SET_RETVAL(answer->data, rc); |
| 238 | } |
239 | } |
| 239 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
240 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
| 240 | ASSERT(!answer->buffer); |
241 | ASSERT(!answer->buffer); |
| 241 | if (!IPC_GET_RETVAL(answer->data)) { |
242 | if (!IPC_GET_RETVAL(answer->data)) { |
| 242 | /* The recipient agreed to send data. */ |
243 | /* The recipient agreed to send data. */ |
| 243 | uintptr_t src = IPC_GET_ARG1(answer->data); |
244 | uintptr_t src = IPC_GET_ARG1(answer->data); |
| 244 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
245 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
| 245 | size_t max_size = IPC_GET_ARG2(*olddata); |
246 | size_t max_size = IPC_GET_ARG2(*olddata); |
| 246 | size_t size = IPC_GET_ARG2(answer->data); |
247 | size_t size = IPC_GET_ARG2(answer->data); |
| 247 | if (size && size <= max_size) { |
248 | if (size && size <= max_size) { |
| 248 | /* |
249 | /* |
| 249 | * Copy the destination VA so that this piece of |
250 | * Copy the destination VA so that this piece of |
| 250 | * information is not lost. |
251 | * information is not lost. |
| 251 | */ |
252 | */ |
| 252 | IPC_SET_ARG1(answer->data, dst); |
253 | IPC_SET_ARG1(answer->data, dst); |
| 253 | 254 | ||
| 254 | answer->buffer = malloc(size, 0); |
255 | answer->buffer = malloc(size, 0); |
| 255 | int rc = copy_from_uspace(answer->buffer, |
256 | int rc = copy_from_uspace(answer->buffer, |
| 256 | (void *) src, size); |
257 | (void *) src, size); |
| 257 | if (rc) { |
258 | if (rc) { |
| 258 | IPC_SET_RETVAL(answer->data, rc); |
259 | IPC_SET_RETVAL(answer->data, rc); |
| 259 | free(answer->buffer); |
260 | free(answer->buffer); |
| 260 | answer->buffer = NULL; |
261 | answer->buffer = NULL; |
| 261 | } |
262 | } |
| 262 | } else if (!size) { |
263 | } else if (!size) { |
| 263 | IPC_SET_RETVAL(answer->data, EOK); |
264 | IPC_SET_RETVAL(answer->data, EOK); |
| 264 | } else { |
265 | } else { |
| 265 | IPC_SET_RETVAL(answer->data, ELIMIT); |
266 | IPC_SET_RETVAL(answer->data, ELIMIT); |
| 266 | } |
267 | } |
| 267 | } |
268 | } |
| 268 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
269 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
| 269 | ASSERT(answer->buffer); |
270 | ASSERT(answer->buffer); |
| 270 | if (!IPC_GET_RETVAL(answer->data)) { |
271 | if (!IPC_GET_RETVAL(answer->data)) { |
| 271 | /* The recipient agreed to receive data. */ |
272 | /* The recipient agreed to receive data. */ |
| 272 | int rc; |
273 | int rc; |
| 273 | uintptr_t dst; |
274 | uintptr_t dst; |
| 274 | size_t size; |
275 | size_t size; |
| 275 | size_t max_size; |
276 | size_t max_size; |
| 276 | 277 | ||
| 277 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
278 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
| 278 | size = (size_t)IPC_GET_ARG2(answer->data); |
279 | size = (size_t)IPC_GET_ARG2(answer->data); |
| 279 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
280 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
| 280 | 281 | ||
| 281 | if (size <= max_size) { |
282 | if (size <= max_size) { |
| 282 | rc = copy_to_uspace((void *) dst, |
283 | rc = copy_to_uspace((void *) dst, |
| 283 | answer->buffer, size); |
284 | answer->buffer, size); |
| 284 | if (rc) |
285 | if (rc) |
| 285 | IPC_SET_RETVAL(answer->data, rc); |
286 | IPC_SET_RETVAL(answer->data, rc); |
| 286 | } else { |
287 | } else { |
| 287 | IPC_SET_RETVAL(answer->data, ELIMIT); |
288 | IPC_SET_RETVAL(answer->data, ELIMIT); |
| 288 | } |
289 | } |
| 289 | } |
290 | } |
| 290 | free(answer->buffer); |
291 | free(answer->buffer); |
| 291 | answer->buffer = NULL; |
292 | answer->buffer = NULL; |
| 292 | } |
293 | } |
| 293 | return 0; |
294 | return 0; |
| 294 | } |
295 | } |
| 295 | 296 | ||
| 296 | /** Called before the request is sent. |
297 | /** Called before the request is sent. |
| 297 | * |
298 | * |
| 298 | * @param call Call structure with the request. |
299 | * @param call Call structure with the request. |
| 299 | * @param phone Phone that the call will be sent through. |
300 | * @param phone Phone that the call will be sent through. |
| 300 | * |
301 | * |
| 301 | * @return Return 0 on success, ELIMIT or EPERM on error. |
302 | * @return Return 0 on success, ELIMIT or EPERM on error. |
| 302 | */ |
303 | */ |
| 303 | static int request_preprocess(call_t *call, phone_t *phone) |
304 | static int request_preprocess(call_t *call, phone_t *phone) |
| 304 | { |
305 | { |
| 305 | int newphid; |
306 | int newphid; |
| 306 | size_t size; |
307 | size_t size; |
| 307 | uintptr_t src; |
308 | uintptr_t src; |
| 308 | int rc; |
309 | int rc; |
| 309 | 310 | ||
| 310 | switch (IPC_GET_METHOD(call->data)) { |
311 | switch (IPC_GET_METHOD(call->data)) { |
| 311 | case IPC_M_CONNECT_ME_TO: |
312 | case IPC_M_CONNECT_ME_TO: |
| 312 | newphid = phone_alloc(); |
313 | newphid = phone_alloc(); |
| 313 | if (newphid < 0) |
314 | if (newphid < 0) |
| 314 | return ELIMIT; |
315 | return ELIMIT; |
| 315 | /* Set arg5 for server */ |
316 | /* Set arg5 for server */ |
| 316 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
317 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
| 317 | call->flags |= IPC_CALL_CONN_ME_TO; |
318 | call->flags |= IPC_CALL_CONN_ME_TO; |
| 318 | call->priv = newphid; |
319 | call->priv = newphid; |
| 319 | break; |
320 | break; |
| 320 | case IPC_M_SHARE_OUT: |
321 | case IPC_M_SHARE_OUT: |
| 321 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
322 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
| 322 | if (!size) |
323 | if (!size) |
| 323 | return EPERM; |
324 | return EPERM; |
| 324 | IPC_SET_ARG2(call->data, size); |
325 | IPC_SET_ARG2(call->data, size); |
| 325 | break; |
326 | break; |
| 326 | case IPC_M_DATA_READ: |
327 | case IPC_M_DATA_READ: |
| 327 | size = IPC_GET_ARG2(call->data); |
328 | size = IPC_GET_ARG2(call->data); |
| 328 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
329 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
| 329 | return ELIMIT; |
330 | return ELIMIT; |
| 330 | break; |
331 | break; |
| 331 | case IPC_M_DATA_WRITE: |
332 | case IPC_M_DATA_WRITE: |
| 332 | src = IPC_GET_ARG1(call->data); |
333 | src = IPC_GET_ARG1(call->data); |
| 333 | size = IPC_GET_ARG2(call->data); |
334 | size = IPC_GET_ARG2(call->data); |
| 334 | 335 | ||
| 335 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
336 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
| 336 | return ELIMIT; |
337 | return ELIMIT; |
| 337 | 338 | ||
| 338 | call->buffer = (uint8_t *) malloc(size, 0); |
339 | call->buffer = (uint8_t *) malloc(size, 0); |
| 339 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
340 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
| 340 | if (rc != 0) { |
341 | if (rc != 0) { |
| 341 | free(call->buffer); |
342 | free(call->buffer); |
| 342 | return rc; |
343 | return rc; |
| 343 | } |
344 | } |
| 344 | break; |
345 | break; |
| 345 | #ifdef CONFIG_UDEBUG |
346 | #ifdef CONFIG_UDEBUG |
| 346 | case IPC_M_DEBUG_ALL: |
347 | case IPC_M_DEBUG_ALL: |
| 347 | return udebug_request_preprocess(call, phone); |
348 | return udebug_request_preprocess(call, phone); |
| 348 | #endif |
349 | #endif |
| 349 | default: |
350 | default: |
| 350 | break; |
351 | break; |
| 351 | } |
352 | } |
| 352 | return 0; |
353 | return 0; |
| 353 | } |
354 | } |
| 354 | 355 | ||
| 355 | /******************************************************************************* |
356 | /******************************************************************************* |
| 356 | * Functions called to process received call/answer before passing it to uspace. |
357 | * Functions called to process received call/answer before passing it to uspace. |
| 357 | *******************************************************************************/ |
358 | *******************************************************************************/ |
| 358 | 359 | ||
| 359 | /** Do basic kernel processing of received call answer. |
360 | /** Do basic kernel processing of received call answer. |
| 360 | * |
361 | * |
| 361 | * @param call Call structure with the answer. |
362 | * @param call Call structure with the answer. |
| 362 | */ |
363 | */ |
| 363 | static void process_answer(call_t *call) |
364 | static void process_answer(call_t *call) |
| 364 | { |
365 | { |
| 365 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
366 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
| 366 | (call->flags & IPC_CALL_FORWARDED)) |
367 | (call->flags & IPC_CALL_FORWARDED)) |
| 367 | IPC_SET_RETVAL(call->data, EFORWARD); |
368 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 368 | 369 | ||
| 369 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
370 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
| 370 | if (IPC_GET_RETVAL(call->data)) |
371 | if (IPC_GET_RETVAL(call->data)) |
| 371 | phone_dealloc(call->priv); |
372 | phone_dealloc(call->priv); |
| 372 | else |
373 | else |
| 373 | IPC_SET_ARG5(call->data, call->priv); |
374 | IPC_SET_ARG5(call->data, call->priv); |
| 374 | } |
375 | } |
| 375 | 376 | ||
| 376 | if (call->buffer) { |
377 | if (call->buffer) { |
| 377 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
378 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
| 378 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
379 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
| 379 | uintptr_t dst = IPC_GET_ARG1(call->data); |
380 | uintptr_t dst = IPC_GET_ARG1(call->data); |
| 380 | size_t size = IPC_GET_ARG2(call->data); |
381 | size_t size = IPC_GET_ARG2(call->data); |
| 381 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
382 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
| 382 | if (rc) |
383 | if (rc) |
| 383 | IPC_SET_RETVAL(call->data, rc); |
384 | IPC_SET_RETVAL(call->data, rc); |
| 384 | free(call->buffer); |
385 | free(call->buffer); |
| 385 | call->buffer = NULL; |
386 | call->buffer = NULL; |
| 386 | } |
387 | } |
| 387 | } |
388 | } |
| 388 | 389 | ||
| 389 | /** Do basic kernel processing of received call request. |
390 | /** Do basic kernel processing of received call request. |
| 390 | * |
391 | * |
| 391 | * @param box Destination answerbox structure. |
392 | * @param box Destination answerbox structure. |
| 392 | * @param call Call structure with the request. |
393 | * @param call Call structure with the request. |
| 393 | * |
394 | * |
| 394 | * @return Return 0 if the call should be passed to userspace. |
395 | * @return Return 0 if the call should be passed to userspace. |
| 395 | * Return -1 if the call should be ignored. |
396 | * Return -1 if the call should be ignored. |
| 396 | */ |
397 | */ |
| 397 | static int process_request(answerbox_t *box, call_t *call) |
398 | static int process_request(answerbox_t *box, call_t *call) |
| 398 | { |
399 | { |
| 399 | int phoneid; |
400 | int phoneid; |
| 400 | 401 | ||
| 401 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
402 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
| 402 | phoneid = phone_alloc(); |
403 | phoneid = phone_alloc(); |
| 403 | if (phoneid < 0) { /* Failed to allocate phone */ |
404 | if (phoneid < 0) { /* Failed to allocate phone */ |
| 404 | IPC_SET_RETVAL(call->data, ELIMIT); |
405 | IPC_SET_RETVAL(call->data, ELIMIT); |
| 405 | ipc_answer(box, call); |
406 | ipc_answer(box, call); |
| 406 | return -1; |
407 | return -1; |
| 407 | } |
408 | } |
| 408 | IPC_SET_ARG5(call->data, phoneid); |
409 | IPC_SET_ARG5(call->data, phoneid); |
| 409 | } |
410 | } |
| 410 | switch (IPC_GET_METHOD(call->data)) { |
411 | switch (IPC_GET_METHOD(call->data)) { |
| 411 | case IPC_M_DEBUG_ALL: |
412 | case IPC_M_DEBUG_ALL: |
| 412 | return -1; |
413 | return -1; |
| 413 | default: |
414 | default: |
| 414 | break; |
415 | break; |
| 415 | } |
416 | } |
| 416 | return 0; |
417 | return 0; |
| 417 | } |
418 | } |
| 418 | 419 | ||
| 419 | /** Make a fast call over IPC, wait for reply and return to user. |
420 | /** Make a fast call over IPC, wait for reply and return to user. |
| 420 | * |
421 | * |
| 421 | * This function can handle only three arguments of payload, but is faster than |
422 | * This function can handle only three arguments of payload, but is faster than |
| 422 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
423 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
| 423 | * |
424 | * |
| 424 | * @param phoneid Phone handle for the call. |
425 | * @param phoneid Phone handle for the call. |
| 425 | * @param method Method of the call. |
426 | * @param method Method of the call. |
| 426 | * @param arg1 Service-defined payload argument. |
427 | * @param arg1 Service-defined payload argument. |
| 427 | * @param arg2 Service-defined payload argument. |
428 | * @param arg2 Service-defined payload argument. |
| 428 | * @param arg3 Service-defined payload argument. |
429 | * @param arg3 Service-defined payload argument. |
| 429 | * @param data Address of userspace structure where the reply call will |
430 | * @param data Address of userspace structure where the reply call will |
| 430 | * be stored. |
431 | * be stored. |
| 431 | * |
432 | * |
| 432 | * @return Returns 0 on success. |
433 | * @return Returns 0 on success. |
| 433 | * Return ENOENT if there is no such phone handle. |
434 | * Return ENOENT if there is no such phone handle. |
| 434 | */ |
435 | */ |
| 435 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
436 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
| 436 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
437 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
| 437 | { |
438 | { |
| 438 | call_t call; |
439 | call_t call; |
| 439 | phone_t *phone; |
440 | phone_t *phone; |
| 440 | int res; |
441 | int res; |
| 441 | int rc; |
442 | int rc; |
| 442 | 443 | ||
| 443 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
444 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 444 | 445 | ||
| 445 | ipc_call_static_init(&call); |
446 | ipc_call_static_init(&call); |
| 446 | IPC_SET_METHOD(call.data, method); |
447 | IPC_SET_METHOD(call.data, method); |
| 447 | IPC_SET_ARG1(call.data, arg1); |
448 | IPC_SET_ARG1(call.data, arg1); |
| 448 | IPC_SET_ARG2(call.data, arg2); |
449 | IPC_SET_ARG2(call.data, arg2); |
| 449 | IPC_SET_ARG3(call.data, arg3); |
450 | IPC_SET_ARG3(call.data, arg3); |
| 450 | /* |
451 | /* |
| 451 | * To achieve deterministic behavior, zero out arguments that are beyond |
452 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 452 | * the limits of the fast version. |
453 | * the limits of the fast version. |
| 453 | */ |
454 | */ |
| 454 | IPC_SET_ARG4(call.data, 0); |
455 | IPC_SET_ARG4(call.data, 0); |
| 455 | IPC_SET_ARG5(call.data, 0); |
456 | IPC_SET_ARG5(call.data, 0); |
| 456 | 457 | ||
| 457 | if (!(res = request_preprocess(&call, phone))) { |
458 | if (!(res = request_preprocess(&call, phone))) { |
| 458 | #ifdef CONFIG_UDEBUG |
459 | #ifdef CONFIG_UDEBUG |
| 459 | udebug_stoppable_begin(); |
460 | udebug_stoppable_begin(); |
| 460 | #endif |
461 | #endif |
| 461 | rc = ipc_call_sync(phone, &call); |
462 | rc = ipc_call_sync(phone, &call); |
| 462 | #ifdef CONFIG_UDEBUG |
463 | #ifdef CONFIG_UDEBUG |
| 463 | udebug_stoppable_end(); |
464 | udebug_stoppable_end(); |
| 464 | #endif |
465 | #endif |
| 465 | if (rc != EOK) |
466 | if (rc != EOK) |
| 466 | return rc; |
467 | return rc; |
| 467 | process_answer(&call); |
468 | process_answer(&call); |
| 468 | 469 | ||
| 469 | } else { |
470 | } else { |
| 470 | IPC_SET_RETVAL(call.data, res); |
471 | IPC_SET_RETVAL(call.data, res); |
| 471 | } |
472 | } |
| 472 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
473 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
| 473 | if (rc != 0) |
474 | if (rc != 0) |
| 474 | return rc; |
475 | return rc; |
| 475 | 476 | ||
| 476 | return 0; |
477 | return 0; |
| 477 | } |
478 | } |
| 478 | 479 | ||
| 479 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
480 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
| 480 | * |
481 | * |
| 481 | * @param phoneid Phone handle for the call. |
482 | * @param phoneid Phone handle for the call. |
| 482 | * @param question Userspace address of call data with the request. |
483 | * @param question Userspace address of call data with the request. |
| 483 | * @param reply Userspace address of call data where to store the |
484 | * @param reply Userspace address of call data where to store the |
| 484 | * answer. |
485 | * answer. |
| 485 | * |
486 | * |
| 486 | * @return Zero on success or an error code. |
487 | * @return Zero on success or an error code. |
| 487 | */ |
488 | */ |
| 488 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
489 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
| 489 | ipc_data_t *reply) |
490 | ipc_data_t *reply) |
| 490 | { |
491 | { |
| 491 | call_t call; |
492 | call_t call; |
| 492 | phone_t *phone; |
493 | phone_t *phone; |
| 493 | int res; |
494 | int res; |
| 494 | int rc; |
495 | int rc; |
| 495 | 496 | ||
| 496 | ipc_call_static_init(&call); |
497 | ipc_call_static_init(&call); |
| 497 | rc = copy_from_uspace(&call.data.args, &question->args, |
498 | rc = copy_from_uspace(&call.data.args, &question->args, |
| 498 | sizeof(call.data.args)); |
499 | sizeof(call.data.args)); |
| 499 | if (rc != 0) |
500 | if (rc != 0) |
| 500 | return (unative_t) rc; |
501 | return (unative_t) rc; |
| 501 | 502 | ||
| 502 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
503 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 503 | 504 | ||
| 504 | if (!(res = request_preprocess(&call, phone))) { |
505 | if (!(res = request_preprocess(&call, phone))) { |
| 505 | #ifdef CONFIG_UDEBUG |
506 | #ifdef CONFIG_UDEBUG |
| 506 | udebug_stoppable_begin(); |
507 | udebug_stoppable_begin(); |
| 507 | #endif |
508 | #endif |
| 508 | rc = ipc_call_sync(phone, &call); |
509 | rc = ipc_call_sync(phone, &call); |
| 509 | #ifdef CONFIG_UDEBUG |
510 | #ifdef CONFIG_UDEBUG |
| 510 | udebug_stoppable_end(); |
511 | udebug_stoppable_end(); |
| 511 | #endif |
512 | #endif |
| 512 | if (rc != EOK) |
513 | if (rc != EOK) |
| 513 | return rc; |
514 | return rc; |
| 514 | process_answer(&call); |
515 | process_answer(&call); |
| 515 | } else |
516 | } else |
| 516 | IPC_SET_RETVAL(call.data, res); |
517 | IPC_SET_RETVAL(call.data, res); |
| 517 | 518 | ||
| 518 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
519 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
| 519 | if (rc != 0) |
520 | if (rc != 0) |
| 520 | return rc; |
521 | return rc; |
| 521 | 522 | ||
| 522 | return 0; |
523 | return 0; |
| 523 | } |
524 | } |
| 524 | 525 | ||
| 525 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
526 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
| 526 | * |
527 | * |
| 527 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
528 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
| 528 | */ |
529 | */ |
| 529 | static int check_call_limit(void) |
530 | static int check_call_limit(void) |
| 530 | { |
531 | { |
| 531 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
532 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
| 532 | atomic_dec(&TASK->active_calls); |
533 | atomic_dec(&TASK->active_calls); |
| 533 | return -1; |
534 | return -1; |
| 534 | } |
535 | } |
| 535 | return 0; |
536 | return 0; |
| 536 | } |
537 | } |
| 537 | 538 | ||
| 538 | /** Make a fast asynchronous call over IPC. |
539 | /** Make a fast asynchronous call over IPC. |
| 539 | * |
540 | * |
| 540 | * This function can only handle four arguments of payload, but is faster than |
541 | * This function can only handle four arguments of payload, but is faster than |
| 541 | * the generic function sys_ipc_call_async_slow(). |
542 | * the generic function sys_ipc_call_async_slow(). |
| 542 | * |
543 | * |
| 543 | * @param phoneid Phone handle for the call. |
544 | * @param phoneid Phone handle for the call. |
| 544 | * @param method Method of the call. |
545 | * @param method Method of the call. |
| 545 | * @param arg1 Service-defined payload argument. |
546 | * @param arg1 Service-defined payload argument. |
| 546 | * @param arg2 Service-defined payload argument. |
547 | * @param arg2 Service-defined payload argument. |
| 547 | * @param arg3 Service-defined payload argument. |
548 | * @param arg3 Service-defined payload argument. |
| 548 | * @param arg4 Service-defined payload argument. |
549 | * @param arg4 Service-defined payload argument. |
| 549 | * |
550 | * |
| 550 | * @return Return call hash on success. |
551 | * @return Return call hash on success. |
| 551 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
552 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
| 552 | * IPC_CALLRET_TEMPORARY if there are too many pending |
553 | * IPC_CALLRET_TEMPORARY if there are too many pending |
| 553 | * asynchronous requests; answers should be handled first. |
554 | * asynchronous requests; answers should be handled first. |
| 554 | */ |
555 | */ |
| 555 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
556 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
| 556 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
557 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
| 557 | { |
558 | { |
| 558 | call_t *call; |
559 | call_t *call; |
| 559 | phone_t *phone; |
560 | phone_t *phone; |
| 560 | int res; |
561 | int res; |
| 561 | 562 | ||
| 562 | if (check_call_limit()) |
563 | if (check_call_limit()) |
| 563 | return IPC_CALLRET_TEMPORARY; |
564 | return IPC_CALLRET_TEMPORARY; |
| 564 | 565 | ||
| 565 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
566 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
| 566 | 567 | ||
| 567 | call = ipc_call_alloc(0); |
568 | call = ipc_call_alloc(0); |
| 568 | IPC_SET_METHOD(call->data, method); |
569 | IPC_SET_METHOD(call->data, method); |
| 569 | IPC_SET_ARG1(call->data, arg1); |
570 | IPC_SET_ARG1(call->data, arg1); |
| 570 | IPC_SET_ARG2(call->data, arg2); |
571 | IPC_SET_ARG2(call->data, arg2); |
| 571 | IPC_SET_ARG3(call->data, arg3); |
572 | IPC_SET_ARG3(call->data, arg3); |
| 572 | IPC_SET_ARG4(call->data, arg4); |
573 | IPC_SET_ARG4(call->data, arg4); |
| 573 | /* |
574 | /* |
| 574 | * To achieve deterministic behavior, zero out arguments that are beyond |
575 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 575 | * the limits of the fast version. |
576 | * the limits of the fast version. |
| 576 | */ |
577 | */ |
| 577 | IPC_SET_ARG5(call->data, 0); |
578 | IPC_SET_ARG5(call->data, 0); |
| 578 | 579 | ||
| 579 | if (!(res = request_preprocess(call, phone))) |
580 | if (!(res = request_preprocess(call, phone))) |
| 580 | ipc_call(phone, call); |
581 | ipc_call(phone, call); |
| 581 | else |
582 | else |
| 582 | ipc_backsend_err(phone, call, res); |
583 | ipc_backsend_err(phone, call, res); |
| 583 | 584 | ||
| 584 | return (unative_t) call; |
585 | return (unative_t) call; |
| 585 | } |
586 | } |
| 586 | 587 | ||
| 587 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
588 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
| 588 | * |
589 | * |
| 589 | * @param phoneid Phone handle for the call. |
590 | * @param phoneid Phone handle for the call. |
| 590 | * @param data Userspace address of call data with the request. |
591 | * @param data Userspace address of call data with the request. |
| 591 | * |
592 | * |
| 592 | * @return See sys_ipc_call_async_fast(). |
593 | * @return See sys_ipc_call_async_fast(). |
| 593 | */ |
594 | */ |
| 594 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
595 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
| 595 | { |
596 | { |
| 596 | call_t *call; |
597 | call_t *call; |
| 597 | phone_t *phone; |
598 | phone_t *phone; |
| 598 | int res; |
599 | int res; |
| 599 | int rc; |
600 | int rc; |
| 600 | 601 | ||
| 601 | if (check_call_limit()) |
602 | if (check_call_limit()) |
| 602 | return IPC_CALLRET_TEMPORARY; |
603 | return IPC_CALLRET_TEMPORARY; |
| 603 | 604 | ||
| 604 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
605 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
| 605 | 606 | ||
| 606 | call = ipc_call_alloc(0); |
607 | call = ipc_call_alloc(0); |
| 607 | rc = copy_from_uspace(&call->data.args, &data->args, |
608 | rc = copy_from_uspace(&call->data.args, &data->args, |
| 608 | sizeof(call->data.args)); |
609 | sizeof(call->data.args)); |
| 609 | if (rc != 0) { |
610 | if (rc != 0) { |
| 610 | ipc_call_free(call); |
611 | ipc_call_free(call); |
| 611 | return (unative_t) rc; |
612 | return (unative_t) rc; |
| 612 | } |
613 | } |
| 613 | if (!(res = request_preprocess(call, phone))) |
614 | if (!(res = request_preprocess(call, phone))) |
| 614 | ipc_call(phone, call); |
615 | ipc_call(phone, call); |
| 615 | else |
616 | else |
| 616 | ipc_backsend_err(phone, call, res); |
617 | ipc_backsend_err(phone, call, res); |
| 617 | 618 | ||
| 618 | return (unative_t) call; |
619 | return (unative_t) call; |
| 619 | } |
620 | } |
| 620 | 621 | ||
| 621 | /** Forward a received call to another destination. |
622 | /** Forward a received call to another destination. |
| 622 | * |
623 | * |
| 623 | * @param callid Hash of the call to forward. |
624 | * @param callid Hash of the call to forward. |
| 624 | * @param phoneid Phone handle to use for forwarding. |
625 | * @param phoneid Phone handle to use for forwarding. |
| 625 | * @param method New method to use for the forwarded call. |
626 | * @param method New method to use for the forwarded call. |
| 626 | * @param arg1 New value of the first argument for the forwarded call. |
627 | * @param arg1 New value of the first argument for the forwarded call. |
| 627 | * @param arg2 New value of the second argument for the forwarded call. |
628 | * @param arg2 New value of the second argument for the forwarded call. |
| 628 | * @param mode Flags that specify mode of the forward operation. |
629 | * @param mode Flags that specify mode of the forward operation. |
| 629 | * |
630 | * |
| 630 | * @return Return 0 on succes, otherwise return an error code. |
631 | * @return Return 0 on succes, otherwise return an error code. |
| 631 | * |
632 | * |
| 632 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
633 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
| 633 | * overwritten in the forwarded message with the new method and the new arg1 and |
634 | * overwritten in the forwarded message with the new method and the new arg1 and |
| 634 | * arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are rewritten with |
635 | * arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are rewritten with |
| 635 | * the new method, arg1 and arg2, respectively. Also note there is a set of |
636 | * the new method, arg1 and arg2, respectively. Also note there is a set of |
| 636 | * immutable methods, for which the new method and argument is not set and |
637 | * immutable methods, for which the new method and argument is not set and |
| 637 | * these values are ignored. |
638 | * these values are ignored. |
| 638 | * |
639 | * |
| 639 | * Warning: When implementing support for changing additional payload |
640 | * Warning: When implementing support for changing additional payload |
| 640 | * arguments, make sure that ARG5 is not rewritten for certain |
641 | * arguments, make sure that ARG5 is not rewritten for certain |
| 641 | * system IPC |
642 | * system IPC |
| 642 | */ |
643 | */ |
| 643 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
644 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
| 644 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
645 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
| 645 | { |
646 | { |
| 646 | call_t *call; |
647 | call_t *call; |
| 647 | phone_t *phone; |
648 | phone_t *phone; |
| 648 | 649 | ||
| 649 | call = get_call(callid); |
650 | call = get_call(callid); |
| 650 | if (!call) |
651 | if (!call) |
| 651 | return ENOENT; |
652 | return ENOENT; |
| 652 | 653 | ||
| 653 | call->flags |= IPC_CALL_FORWARDED; |
654 | call->flags |= IPC_CALL_FORWARDED; |
| 654 | 655 | ||
| 655 | GET_CHECK_PHONE(phone, phoneid, { |
656 | GET_CHECK_PHONE(phone, phoneid, { |
| 656 | IPC_SET_RETVAL(call->data, EFORWARD); |
657 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 657 | ipc_answer(&TASK->answerbox, call); |
658 | ipc_answer(&TASK->answerbox, call); |
| 658 | return ENOENT; |
659 | return ENOENT; |
| 659 | }); |
660 | }); |
| 660 | 661 | ||
| 661 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
662 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
| 662 | IPC_SET_RETVAL(call->data, EFORWARD); |
663 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 663 | ipc_answer(&TASK->answerbox, call); |
664 | ipc_answer(&TASK->answerbox, call); |
| 664 | return EPERM; |
665 | return EPERM; |
| 665 | } |
666 | } |
| 666 | 667 | ||
| 667 | /* |
668 | /* |
| 668 | * Userspace is not allowed to change method of system methods on |
669 | * Userspace is not allowed to change method of system methods on |
| 669 | * forward, allow changing ARG1, ARG2 and ARG3 by means of method, |
670 | * forward, allow changing ARG1, ARG2 and ARG3 by means of method, |
| 670 | * arg1 and arg2. |
671 | * arg1 and arg2. |
| 671 | * If the method is immutable, don't change anything. |
672 | * If the method is immutable, don't change anything. |
| 672 | */ |
673 | */ |
| 673 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
674 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
| 674 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
675 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
| 675 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
676 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
| 676 | phone_dealloc(IPC_GET_ARG5(call->data)); |
677 | phone_dealloc(IPC_GET_ARG5(call->data)); |
| 677 | 678 | ||
| 678 | IPC_SET_ARG1(call->data, method); |
679 | IPC_SET_ARG1(call->data, method); |
| 679 | IPC_SET_ARG2(call->data, arg1); |
680 | IPC_SET_ARG2(call->data, arg1); |
| 680 | IPC_SET_ARG3(call->data, arg2); |
681 | IPC_SET_ARG3(call->data, arg2); |
| 681 | } else { |
682 | } else { |
| 682 | IPC_SET_METHOD(call->data, method); |
683 | IPC_SET_METHOD(call->data, method); |
| 683 | IPC_SET_ARG1(call->data, arg1); |
684 | IPC_SET_ARG1(call->data, arg1); |
| 684 | IPC_SET_ARG2(call->data, arg2); |
685 | IPC_SET_ARG2(call->data, arg2); |
| 685 | } |
686 | } |
| 686 | } |
687 | } |
| 687 | 688 | ||
| 688 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
689 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
| 689 | } |
690 | } |
| 690 | 691 | ||
| 691 | /** Answer an IPC call - fast version. |
692 | /** Answer an IPC call - fast version. |
| 692 | * |
693 | * |
| 693 | * This function can handle only two return arguments of payload, but is faster |
694 | * This function can handle only two return arguments of payload, but is faster |
| 694 | * than the generic sys_ipc_answer(). |
695 | * than the generic sys_ipc_answer(). |
| 695 | * |
696 | * |
| 696 | * @param callid Hash of the call to be answered. |
697 | * @param callid Hash of the call to be answered. |
| 697 | * @param retval Return value of the answer. |
698 | * @param retval Return value of the answer. |
| 698 | * @param arg1 Service-defined return value. |
699 | * @param arg1 Service-defined return value. |
| 699 | * @param arg2 Service-defined return value. |
700 | * @param arg2 Service-defined return value. |
| 700 | * @param arg3 Service-defined return value. |
701 | * @param arg3 Service-defined return value. |
| 701 | * @param arg4 Service-defined return value. |
702 | * @param arg4 Service-defined return value. |
| 702 | * |
703 | * |
| 703 | * @return Return 0 on success, otherwise return an error code. |
704 | * @return Return 0 on success, otherwise return an error code. |
| 704 | */ |
705 | */ |
| 705 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
706 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
| 706 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
707 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
| 707 | { |
708 | { |
| 708 | call_t *call; |
709 | call_t *call; |
| 709 | ipc_data_t saved_data; |
710 | ipc_data_t saved_data; |
| 710 | int saveddata = 0; |
711 | int saveddata = 0; |
| 711 | int rc; |
712 | int rc; |
| 712 | 713 | ||
| 713 | /* Do not answer notification callids */ |
714 | /* Do not answer notification callids */ |
| 714 | if (callid & IPC_CALLID_NOTIFICATION) |
715 | if (callid & IPC_CALLID_NOTIFICATION) |
| 715 | return 0; |
716 | return 0; |
| 716 | 717 | ||
| 717 | call = get_call(callid); |
718 | call = get_call(callid); |
| 718 | if (!call) |
719 | if (!call) |
| 719 | return ENOENT; |
720 | return ENOENT; |
| 720 | 721 | ||
| 721 | if (answer_need_old(call)) { |
722 | if (answer_need_old(call)) { |
| 722 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
723 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
| 723 | saveddata = 1; |
724 | saveddata = 1; |
| 724 | } |
725 | } |
| 725 | 726 | ||
| 726 | IPC_SET_RETVAL(call->data, retval); |
727 | IPC_SET_RETVAL(call->data, retval); |
| 727 | IPC_SET_ARG1(call->data, arg1); |
728 | IPC_SET_ARG1(call->data, arg1); |
| 728 | IPC_SET_ARG2(call->data, arg2); |
729 | IPC_SET_ARG2(call->data, arg2); |
| 729 | IPC_SET_ARG3(call->data, arg3); |
730 | IPC_SET_ARG3(call->data, arg3); |
| 730 | IPC_SET_ARG4(call->data, arg4); |
731 | IPC_SET_ARG4(call->data, arg4); |
| 731 | /* |
732 | /* |
| 732 | * To achieve deterministic behavior, zero out arguments that are beyond |
733 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 733 | * the limits of the fast version. |
734 | * the limits of the fast version. |
| 734 | */ |
735 | */ |
| 735 | IPC_SET_ARG5(call->data, 0); |
736 | IPC_SET_ARG5(call->data, 0); |
| 736 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
737 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
| 737 | 738 | ||
| 738 | ipc_answer(&TASK->answerbox, call); |
739 | ipc_answer(&TASK->answerbox, call); |
| 739 | return rc; |
740 | return rc; |
| 740 | } |
741 | } |
| 741 | 742 | ||
| 742 | /** Answer an IPC call. |
743 | /** Answer an IPC call. |
| 743 | * |
744 | * |
| 744 | * @param callid Hash of the call to be answered. |
745 | * @param callid Hash of the call to be answered. |
| 745 | * @param data Userspace address of call data with the answer. |
746 | * @param data Userspace address of call data with the answer. |
| 746 | * |
747 | * |
| 747 | * @return Return 0 on success, otherwise return an error code. |
748 | * @return Return 0 on success, otherwise return an error code. |
| 748 | */ |
749 | */ |
| 749 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
750 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
| 750 | { |
751 | { |
| 751 | call_t *call; |
752 | call_t *call; |
| 752 | ipc_data_t saved_data; |
753 | ipc_data_t saved_data; |
| 753 | int saveddata = 0; |
754 | int saveddata = 0; |
| 754 | int rc; |
755 | int rc; |
| 755 | 756 | ||
| 756 | /* Do not answer notification callids */ |
757 | /* Do not answer notification callids */ |
| 757 | if (callid & IPC_CALLID_NOTIFICATION) |
758 | if (callid & IPC_CALLID_NOTIFICATION) |
| 758 | return 0; |
759 | return 0; |
| 759 | 760 | ||
| 760 | call = get_call(callid); |
761 | call = get_call(callid); |
| 761 | if (!call) |
762 | if (!call) |
| 762 | return ENOENT; |
763 | return ENOENT; |
| 763 | 764 | ||
| 764 | if (answer_need_old(call)) { |
765 | if (answer_need_old(call)) { |
| 765 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
766 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
| 766 | saveddata = 1; |
767 | saveddata = 1; |
| 767 | } |
768 | } |
| 768 | rc = copy_from_uspace(&call->data.args, &data->args, |
769 | rc = copy_from_uspace(&call->data.args, &data->args, |
| 769 | sizeof(call->data.args)); |
770 | sizeof(call->data.args)); |
| 770 | if (rc != 0) |
771 | if (rc != 0) |
| 771 | return rc; |
772 | return rc; |
| 772 | 773 | ||
| 773 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
774 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
| 774 | 775 | ||
| 775 | ipc_answer(&TASK->answerbox, call); |
776 | ipc_answer(&TASK->answerbox, call); |
| 776 | 777 | ||
| 777 | return rc; |
778 | return rc; |
| 778 | } |
779 | } |
| 779 | 780 | ||
| 780 | /** Hang up a phone. |
781 | /** Hang up a phone. |
| 781 | * |
782 | * |
| 782 | * @param Phone handle of the phone to be hung up. |
783 | * @param Phone handle of the phone to be hung up. |
| 783 | * |
784 | * |
| 784 | * @return Return 0 on success or an error code. |
785 | * @return Return 0 on success or an error code. |
| 785 | */ |
786 | */ |
| 786 | unative_t sys_ipc_hangup(int phoneid) |
787 | unative_t sys_ipc_hangup(int phoneid) |
| 787 | { |
788 | { |
| 788 | phone_t *phone; |
789 | phone_t *phone; |
| 789 | 790 | ||
| 790 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
791 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 791 | 792 | ||
| 792 | if (ipc_phone_hangup(phone)) |
793 | if (ipc_phone_hangup(phone)) |
| 793 | return -1; |
794 | return -1; |
| 794 | 795 | ||
| 795 | return 0; |
796 | return 0; |
| 796 | } |
797 | } |
| 797 | 798 | ||
| 798 | /** Wait for an incoming IPC call or an answer. |
799 | /** Wait for an incoming IPC call or an answer. |
| 799 | * |
800 | * |
| 800 | * @param calldata Pointer to buffer where the call/answer data is stored. |
801 | * @param calldata Pointer to buffer where the call/answer data is stored. |
| 801 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
802 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
| 802 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
803 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
| 803 | * for explanation. |
804 | * for explanation. |
| 804 | * |
805 | * |
| 805 | * @return Hash of the call. |
806 | * @return Hash of the call. |
| 806 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
807 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
| 807 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
808 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
| 808 | * answer. |
809 | * answer. |
| 809 | */ |
810 | */ |
| 810 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
811 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
| 811 | { |
812 | { |
| 812 | call_t *call; |
813 | call_t *call; |
| 813 | 814 | ||
| 814 | restart: |
815 | restart: |
| 815 | 816 | ||
| 816 | #ifdef CONFIG_UDEBUG |
817 | #ifdef CONFIG_UDEBUG |
| 817 | udebug_stoppable_begin(); |
818 | udebug_stoppable_begin(); |
| 818 | #endif |
819 | #endif |
| 819 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
820 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
| 820 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
821 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
| 821 | 822 | ||
| 822 | #ifdef CONFIG_UDEBUG |
823 | #ifdef CONFIG_UDEBUG |
| 823 | udebug_stoppable_end(); |
824 | udebug_stoppable_end(); |
| 824 | #endif |
825 | #endif |
| 825 | if (!call) |
826 | if (!call) |
| 826 | return 0; |
827 | return 0; |
| 827 | 828 | ||
| 828 | if (call->flags & IPC_CALL_NOTIF) { |
829 | if (call->flags & IPC_CALL_NOTIF) { |
| 829 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
830 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
| 830 | 831 | ||
| 831 | /* Set in_phone_hash to the interrupt counter */ |
832 | /* Set in_phone_hash to the interrupt counter */ |
| 832 | call->data.phone = (void *) call->priv; |
833 | call->data.phone = (void *) call->priv; |
| 833 | 834 | ||
| 834 | STRUCT_TO_USPACE(calldata, &call->data); |
835 | STRUCT_TO_USPACE(calldata, &call->data); |
| 835 | 836 | ||
| 836 | ipc_call_free(call); |
837 | ipc_call_free(call); |
| 837 | 838 | ||
| 838 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
839 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
| 839 | } |
840 | } |
| 840 | 841 | ||
| 841 | if (call->flags & IPC_CALL_ANSWERED) { |
842 | if (call->flags & IPC_CALL_ANSWERED) { |
| 842 | process_answer(call); |
843 | process_answer(call); |
| 843 | 844 | ||
| 844 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
845 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
| 845 | 846 | ||
| 846 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
847 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
| 847 | ipc_call_free(call); |
848 | ipc_call_free(call); |
| 848 | goto restart; |
849 | goto restart; |
| 849 | } else { |
850 | } else { |
| 850 | /* |
851 | /* |
| 851 | * Decrement the counter of active calls only if the |
852 | * Decrement the counter of active calls only if the |
| 852 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
853 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
| 853 | * which doesn't contribute to the counter. |
854 | * which doesn't contribute to the counter. |
| 854 | */ |
855 | */ |
| 855 | atomic_dec(&TASK->active_calls); |
856 | atomic_dec(&TASK->active_calls); |
| 856 | } |
857 | } |
| 857 | 858 | ||
| 858 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
859 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
| 859 | ipc_call_free(call); |
860 | ipc_call_free(call); |
| 860 | 861 | ||
| 861 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
862 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
| 862 | } |
863 | } |
| 863 | 864 | ||
| 864 | if (process_request(&TASK->answerbox, call)) |
865 | if (process_request(&TASK->answerbox, call)) |
| 865 | goto restart; |
866 | goto restart; |
| 866 | 867 | ||
| 867 | /* Include phone address('id') of the caller in the request, |
868 | /* Include phone address('id') of the caller in the request, |
| 868 | * copy whole call->data, not only call->data.args */ |
869 | * copy whole call->data, not only call->data.args */ |
| 869 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
870 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
| 870 | return 0; |
871 | return 0; |
| 871 | } |
872 | } |
| 872 | return (unative_t)call; |
873 | return (unative_t)call; |
| 873 | } |
874 | } |
| 874 | 875 | ||
| 875 | /** Connect an IRQ handler to a task. |
876 | /** Connect an IRQ handler to a task. |
| 876 | * |
877 | * |
| 877 | * @param inr IRQ number. |
878 | * @param inr IRQ number. |
| 878 | * @param devno Device number. |
879 | * @param devno Device number. |
| 879 | * @param method Method to be associated with the notification. |
880 | * @param method Method to be associated with the notification. |
| 880 | * @param ucode Uspace pointer to the top-half pseudocode. |
881 | * @param ucode Uspace pointer to the top-half pseudocode. |
| 881 | * |
882 | * |
| 882 | * @return EPERM or a return code returned by ipc_irq_register(). |
883 | * @return EPERM or a return code returned by ipc_irq_register(). |
| 883 | */ |
884 | */ |
| 884 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
885 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
| 885 | irq_code_t *ucode) |
886 | irq_code_t *ucode) |
| 886 | { |
887 | { |
| 887 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
888 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
| 888 | return EPERM; |
889 | return EPERM; |
| 889 | 890 | ||
| 890 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
891 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
| 891 | } |
892 | } |
| 892 | 893 | ||
| 893 | /** Disconnect an IRQ handler from a task. |
894 | /** Disconnect an IRQ handler from a task. |
| 894 | * |
895 | * |
| 895 | * @param inr IRQ number. |
896 | * @param inr IRQ number. |
| 896 | * @param devno Device number. |
897 | * @param devno Device number. |
| 897 | * |
898 | * |
| 898 | * @return Zero on success or EPERM on error.. |
899 | * @return Zero on success or EPERM on error.. |
| 899 | */ |
900 | */ |
| 900 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
901 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
| 901 | { |
902 | { |
| 902 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
903 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
| 903 | return EPERM; |
904 | return EPERM; |
| 904 | 905 | ||
| 905 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
906 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
| 906 | 907 | ||
| 907 | return 0; |
908 | return 0; |
| 908 | } |
909 | } |
| 909 | 910 | ||
| 910 | #include <console/console.h> |
911 | #include <console/console.h> |
| 911 | 912 | ||
| 912 | /** |
913 | /** |
| 913 | * Syscall connect to a task by id. |
914 | * Syscall connect to a task by id. |
| 914 | * |
915 | * |
| 915 | * @return Phone id on success, or negative error code. |
916 | * @return Phone id on success, or negative error code. |
| 916 | */ |
917 | */ |
| 917 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
918 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
| 918 | { |
919 | { |
| 919 | #ifdef CONFIG_UDEBUG |
920 | #ifdef CONFIG_UDEBUG |
| 920 | sysarg64_t taskid_arg; |
921 | sysarg64_t taskid_arg; |
| 921 | int rc; |
922 | int rc; |
| 922 | 923 | ||
| 923 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
924 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
| 924 | if (rc != 0) |
925 | if (rc != 0) |
| 925 | return (unative_t) rc; |
926 | return (unative_t) rc; |
| 926 | 927 | ||
| 927 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
928 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
| 928 | 929 | ||
| 929 | return ipc_connect_kbox(taskid_arg.value); |
930 | return ipc_connect_kbox(taskid_arg.value); |
| 930 | #else |
931 | #else |
| 931 | return (unative_t) ENOTSUP; |
932 | return (unative_t) ENOTSUP; |
| 932 | #endif |
933 | #endif |
| 933 | } |
934 | } |
| 934 | 935 | ||
| 935 | /** @} |
936 | /** @} |
| 936 | */ |
937 | */ |
| 937 | 938 | ||