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| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2006 Ondrej Palkovsky |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup genericipc |
29 | /** @addtogroup genericipc |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #include <arch.h> |
35 | #include <arch.h> |
| 36 | #include <proc/task.h> |
36 | #include <proc/task.h> |
| 37 | #include <proc/thread.h> |
37 | #include <proc/thread.h> |
| 38 | #include <errno.h> |
38 | #include <errno.h> |
| 39 | #include <memstr.h> |
39 | #include <memstr.h> |
| 40 | #include <debug.h> |
40 | #include <debug.h> |
| 41 | #include <ipc/ipc.h> |
41 | #include <ipc/ipc.h> |
| 42 | #include <ipc/sysipc.h> |
42 | #include <ipc/sysipc.h> |
| 43 | #include <ipc/irq.h> |
43 | #include <ipc/irq.h> |
| 44 | #include <ipc/ipcrsc.h> |
44 | #include <ipc/ipcrsc.h> |
| 45 | #include <ipc/kbox.h> |
45 | #include <ipc/kbox.h> |
| 46 | #include <udebug/udebug_ipc.h> |
46 | #include <udebug/udebug_ipc.h> |
| 47 | #include <arch/interrupt.h> |
47 | #include <arch/interrupt.h> |
| 48 | #include <syscall/copy.h> |
48 | #include <syscall/copy.h> |
| 49 | #include <security/cap.h> |
49 | #include <security/cap.h> |
| 50 | #include <mm/as.h> |
50 | #include <mm/as.h> |
| 51 | #include <print.h> |
51 | #include <print.h> |
| 52 | 52 | ||
| 53 | /** |
53 | /** |
| 54 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
54 | * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ |
| 55 | * requests. |
55 | * requests. |
| 56 | */ |
56 | */ |
| 57 | #define DATA_XFER_LIMIT (64 * 1024) |
57 | #define DATA_XFER_LIMIT (64 * 1024) |
| 58 | 58 | ||
| 59 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
59 | #define GET_CHECK_PHONE(phone, phoneid, err) \ |
| 60 | { \ |
60 | { \ |
| 61 | if (phoneid > IPC_MAX_PHONES) { \ |
61 | if (phoneid > IPC_MAX_PHONES) { \ |
| 62 | err; \ |
62 | err; \ |
| 63 | } \ |
63 | } \ |
| 64 | phone = &TASK->phones[phoneid]; \ |
64 | phone = &TASK->phones[phoneid]; \ |
| 65 | } |
65 | } |
| 66 | 66 | ||
| 67 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
67 | #define STRUCT_TO_USPACE(dst, src) copy_to_uspace(dst, src, sizeof(*(src))) |
| 68 | 68 | ||
| 69 | /** Decide if the method is a system method. |
69 | /** Decide if the method is a system method. |
| 70 | * |
70 | * |
| 71 | * @param method Method to be decided. |
71 | * @param method Method to be decided. |
| 72 | * |
72 | * |
| 73 | * @return Return 1 if the method is a system method. |
73 | * @return Return 1 if the method is a system method. |
| 74 | * Otherwise return 0. |
74 | * Otherwise return 0. |
| 75 | */ |
75 | */ |
| 76 | static inline int method_is_system(unative_t method) |
76 | static inline int method_is_system(unative_t method) |
| 77 | { |
77 | { |
| 78 | if (method <= IPC_M_LAST_SYSTEM) |
78 | if (method <= IPC_M_LAST_SYSTEM) |
| 79 | return 1; |
79 | return 1; |
| 80 | return 0; |
80 | return 0; |
| 81 | } |
81 | } |
| 82 | 82 | ||
| 83 | /** Decide if the message with this method is forwardable. |
83 | /** Decide if the message with this method is forwardable. |
| 84 | * |
84 | * |
| 85 | * - some system messages may be forwarded, for some of them |
85 | * - some system messages may be forwarded, for some of them |
| 86 | * it is useless |
86 | * it is useless |
| 87 | * |
87 | * |
| 88 | * @param method Method to be decided. |
88 | * @param method Method to be decided. |
| 89 | * |
89 | * |
| 90 | * @return Return 1 if the method is forwardable. |
90 | * @return Return 1 if the method is forwardable. |
| 91 | * Otherwise return 0. |
91 | * Otherwise return 0. |
| 92 | */ |
92 | */ |
| 93 | static inline int method_is_forwardable(unative_t method) |
93 | static inline int method_is_forwardable(unative_t method) |
| 94 | { |
94 | { |
| 95 | switch (method) { |
95 | switch (method) { |
| 96 | case IPC_M_PHONE_HUNGUP: |
96 | case IPC_M_PHONE_HUNGUP: |
| 97 | /* This message is meant only for the original recipient. */ |
97 | /* This message is meant only for the original recipient. */ |
| 98 | return 0; |
98 | return 0; |
| 99 | default: |
99 | default: |
| 100 | return 1; |
100 | return 1; |
| 101 | } |
101 | } |
| 102 | } |
102 | } |
| 103 | 103 | ||
| 104 | /** Decide if the message with this method is immutable on forward. |
104 | /** Decide if the message with this method is immutable on forward. |
| 105 | * |
105 | * |
| 106 | * - some system messages may be forwarded but their content cannot be altered |
106 | * - some system messages may be forwarded but their content cannot be altered |
| 107 | * |
107 | * |
| 108 | * @param method Method to be decided. |
108 | * @param method Method to be decided. |
| 109 | * |
109 | * |
| 110 | * @return Return 1 if the method is immutable on forward. |
110 | * @return Return 1 if the method is immutable on forward. |
| 111 | * Otherwise return 0. |
111 | * Otherwise return 0. |
| 112 | */ |
112 | */ |
| 113 | static inline int method_is_immutable(unative_t method) |
113 | static inline int method_is_immutable(unative_t method) |
| 114 | { |
114 | { |
| 115 | switch (method) { |
115 | switch (method) { |
| 116 | case IPC_M_SHARE_OUT: |
116 | case IPC_M_SHARE_OUT: |
| 117 | case IPC_M_SHARE_IN: |
117 | case IPC_M_SHARE_IN: |
| 118 | case IPC_M_DATA_WRITE: |
118 | case IPC_M_DATA_WRITE: |
| 119 | case IPC_M_DATA_READ: |
119 | case IPC_M_DATA_READ: |
| 120 | return 1; |
120 | return 1; |
| 121 | break; |
121 | break; |
| 122 | default: |
122 | default: |
| 123 | return 0; |
123 | return 0; |
| 124 | } |
124 | } |
| 125 | } |
125 | } |
| 126 | 126 | ||
| 127 | 127 | ||
| 128 | /*********************************************************************** |
128 | /*********************************************************************** |
| 129 | * Functions that preprocess answer before sending it to the recepient. |
129 | * Functions that preprocess answer before sending it to the recepient. |
| 130 | ***********************************************************************/ |
130 | ***********************************************************************/ |
| 131 | 131 | ||
| 132 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
132 | /** Decide if the caller (e.g. ipc_answer()) should save the old call contents |
| 133 | * for answer_preprocess(). |
133 | * for answer_preprocess(). |
| 134 | * |
134 | * |
| 135 | * @param call Call structure to be decided. |
135 | * @param call Call structure to be decided. |
| 136 | * |
136 | * |
| 137 | * @return Return 1 if the old call contents should be saved. |
137 | * @return Return 1 if the old call contents should be saved. |
| 138 | * Return 0 otherwise. |
138 | * Return 0 otherwise. |
| 139 | */ |
139 | */ |
| 140 | static inline int answer_need_old(call_t *call) |
140 | static inline int answer_need_old(call_t *call) |
| 141 | { |
141 | { |
| 142 | switch (IPC_GET_METHOD(call->data)) { |
142 | switch (IPC_GET_METHOD(call->data)) { |
| 143 | case IPC_M_CONNECT_TO_ME: |
143 | case IPC_M_CONNECT_TO_ME: |
| 144 | case IPC_M_CONNECT_ME_TO: |
144 | case IPC_M_CONNECT_ME_TO: |
| 145 | case IPC_M_SHARE_OUT: |
145 | case IPC_M_SHARE_OUT: |
| 146 | case IPC_M_SHARE_IN: |
146 | case IPC_M_SHARE_IN: |
| 147 | case IPC_M_DATA_WRITE: |
147 | case IPC_M_DATA_WRITE: |
| 148 | case IPC_M_DATA_READ: |
148 | case IPC_M_DATA_READ: |
| 149 | return 1; |
149 | return 1; |
| 150 | default: |
150 | default: |
| 151 | return 0; |
151 | return 0; |
| 152 | } |
152 | } |
| 153 | } |
153 | } |
| 154 | 154 | ||
| 155 | /** Interpret process answer as control information. |
155 | /** Interpret process answer as control information. |
| 156 | * |
156 | * |
| 157 | * This function is called directly after sys_ipc_answer(). |
157 | * This function is called directly after sys_ipc_answer(). |
| 158 | * |
158 | * |
| 159 | * @param answer Call structure with the answer. |
159 | * @param answer Call structure with the answer. |
| 160 | * @param olddata Saved data of the request. |
160 | * @param olddata Saved data of the request. |
| 161 | * |
161 | * |
| 162 | * @return Return 0 on success or an error code. |
162 | * @return Return 0 on success or an error code. |
| 163 | */ |
163 | */ |
| 164 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
164 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
| 165 | { |
165 | { |
| 166 | int phoneid; |
166 | int phoneid; |
| 167 | 167 | ||
| 168 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
168 | if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { |
| 169 | /* In case of forward, hangup the forwared phone, |
169 | /* In case of forward, hangup the forwared phone, |
| 170 | * not the originator |
170 | * not the originator |
| 171 | */ |
171 | */ |
| 172 | mutex_lock(&answer->data.phone->lock); |
172 | mutex_lock(&answer->data.phone->lock); |
| 173 | spinlock_lock(&TASK->answerbox.lock); |
173 | spinlock_lock(&TASK->answerbox.lock); |
| 174 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
174 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
| 175 | list_remove(&answer->data.phone->link); |
175 | list_remove(&answer->data.phone->link); |
| 176 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
176 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
| 177 | } |
177 | } |
| 178 | spinlock_unlock(&TASK->answerbox.lock); |
178 | spinlock_unlock(&TASK->answerbox.lock); |
| 179 | mutex_unlock(&answer->data.phone->lock); |
179 | mutex_unlock(&answer->data.phone->lock); |
| 180 | } |
180 | } |
| 181 | 181 | ||
| 182 | if (!olddata) |
182 | if (!olddata) |
| 183 | return 0; |
183 | return 0; |
| 184 | 184 | ||
| 185 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
185 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
| 186 | phoneid = IPC_GET_ARG5(*olddata); |
186 | phoneid = IPC_GET_ARG5(*olddata); |
| 187 | if (IPC_GET_RETVAL(answer->data)) { |
187 | if (IPC_GET_RETVAL(answer->data)) { |
| 188 | /* The connection was not accepted */ |
188 | /* The connection was not accepted */ |
| 189 | phone_dealloc(phoneid); |
189 | phone_dealloc(phoneid); |
| 190 | } else { |
190 | } else { |
| 191 | /* The connection was accepted */ |
191 | /* The connection was accepted */ |
| 192 | phone_connect(phoneid, &answer->sender->answerbox); |
192 | phone_connect(phoneid, &answer->sender->answerbox); |
| 193 | /* Set 'phone hash' as arg5 of response */ |
193 | /* Set 'phone hash' as arg5 of response */ |
| 194 | IPC_SET_ARG5(answer->data, |
194 | IPC_SET_ARG5(answer->data, |
| 195 | (unative_t) &TASK->phones[phoneid]); |
195 | (unative_t) &TASK->phones[phoneid]); |
| 196 | } |
196 | } |
| 197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
197 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
| 198 | /* If the users accepted call, connect */ |
198 | /* If the users accepted call, connect */ |
| 199 | if (!IPC_GET_RETVAL(answer->data)) { |
199 | if (!IPC_GET_RETVAL(answer->data)) { |
| 200 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
200 | ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
| 201 | &TASK->answerbox); |
201 | &TASK->answerbox); |
| 202 | } |
202 | } |
| 203 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
203 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_OUT) { |
| 204 | if (!IPC_GET_RETVAL(answer->data)) { |
204 | if (!IPC_GET_RETVAL(answer->data)) { |
| 205 | /* Accepted, handle as_area receipt */ |
205 | /* Accepted, handle as_area receipt */ |
| 206 | ipl_t ipl; |
206 | ipl_t ipl; |
| 207 | int rc; |
207 | int rc; |
| 208 | as_t *as; |
208 | as_t *as; |
| 209 | 209 | ||
| 210 | ipl = interrupts_disable(); |
210 | ipl = interrupts_disable(); |
| 211 | spinlock_lock(&answer->sender->lock); |
211 | spinlock_lock(&answer->sender->lock); |
| 212 | as = answer->sender->as; |
212 | as = answer->sender->as; |
| 213 | spinlock_unlock(&answer->sender->lock); |
213 | spinlock_unlock(&answer->sender->lock); |
| 214 | interrupts_restore(ipl); |
214 | interrupts_restore(ipl); |
| 215 | 215 | ||
| 216 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
216 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), |
| 217 | IPC_GET_ARG2(*olddata), AS, |
217 | IPC_GET_ARG2(*olddata), AS, |
| 218 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
218 | IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
| 219 | IPC_SET_RETVAL(answer->data, rc); |
219 | IPC_SET_RETVAL(answer->data, rc); |
| 220 | return rc; |
220 | return rc; |
| 221 | } |
221 | } |
| 222 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
222 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_SHARE_IN) { |
| 223 | if (!IPC_GET_RETVAL(answer->data)) { |
223 | if (!IPC_GET_RETVAL(answer->data)) { |
| 224 | ipl_t ipl; |
224 | ipl_t ipl; |
| 225 | as_t *as; |
225 | as_t *as; |
| 226 | int rc; |
226 | int rc; |
| 227 | 227 | ||
| 228 | ipl = interrupts_disable(); |
228 | ipl = interrupts_disable(); |
| 229 | spinlock_lock(&answer->sender->lock); |
229 | spinlock_lock(&answer->sender->lock); |
| 230 | as = answer->sender->as; |
230 | as = answer->sender->as; |
| 231 | spinlock_unlock(&answer->sender->lock); |
231 | spinlock_unlock(&answer->sender->lock); |
| 232 | interrupts_restore(ipl); |
232 | interrupts_restore(ipl); |
| 233 | 233 | ||
| 234 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
234 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), |
| 235 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
235 | IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata), |
| 236 | IPC_GET_ARG2(answer->data)); |
236 | IPC_GET_ARG2(answer->data)); |
| 237 | IPC_SET_RETVAL(answer->data, rc); |
237 | IPC_SET_RETVAL(answer->data, rc); |
| 238 | } |
238 | } |
| 239 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
239 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_READ) { |
| 240 | ASSERT(!answer->buffer); |
240 | ASSERT(!answer->buffer); |
| 241 | if (!IPC_GET_RETVAL(answer->data)) { |
241 | if (!IPC_GET_RETVAL(answer->data)) { |
| 242 | /* The recipient agreed to send data. */ |
242 | /* The recipient agreed to send data. */ |
| 243 | uintptr_t src = IPC_GET_ARG1(answer->data); |
243 | uintptr_t src = IPC_GET_ARG1(answer->data); |
| 244 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
244 | uintptr_t dst = IPC_GET_ARG1(*olddata); |
| 245 | size_t max_size = IPC_GET_ARG2(*olddata); |
245 | size_t max_size = IPC_GET_ARG2(*olddata); |
| 246 | size_t size = IPC_GET_ARG2(answer->data); |
246 | size_t size = IPC_GET_ARG2(answer->data); |
| 247 | if (size && size <= max_size) { |
247 | if (size && size <= max_size) { |
| 248 | /* |
248 | /* |
| 249 | * Copy the destination VA so that this piece of |
249 | * Copy the destination VA so that this piece of |
| 250 | * information is not lost. |
250 | * information is not lost. |
| 251 | */ |
251 | */ |
| 252 | IPC_SET_ARG1(answer->data, dst); |
252 | IPC_SET_ARG1(answer->data, dst); |
| 253 | 253 | ||
| 254 | answer->buffer = malloc(size, 0); |
254 | answer->buffer = malloc(size, 0); |
| 255 | int rc = copy_from_uspace(answer->buffer, |
255 | int rc = copy_from_uspace(answer->buffer, |
| 256 | (void *) src, size); |
256 | (void *) src, size); |
| 257 | if (rc) { |
257 | if (rc) { |
| 258 | IPC_SET_RETVAL(answer->data, rc); |
258 | IPC_SET_RETVAL(answer->data, rc); |
| 259 | free(answer->buffer); |
259 | free(answer->buffer); |
| 260 | answer->buffer = NULL; |
260 | answer->buffer = NULL; |
| 261 | } |
261 | } |
| 262 | } else if (!size) { |
262 | } else if (!size) { |
| 263 | IPC_SET_RETVAL(answer->data, EOK); |
263 | IPC_SET_RETVAL(answer->data, EOK); |
| 264 | } else { |
264 | } else { |
| 265 | IPC_SET_RETVAL(answer->data, ELIMIT); |
265 | IPC_SET_RETVAL(answer->data, ELIMIT); |
| 266 | } |
266 | } |
| 267 | } |
267 | } |
| 268 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
268 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_DATA_WRITE) { |
| 269 | ASSERT(answer->buffer); |
269 | ASSERT(answer->buffer); |
| 270 | if (!IPC_GET_RETVAL(answer->data)) { |
270 | if (!IPC_GET_RETVAL(answer->data)) { |
| 271 | /* The recipient agreed to receive data. */ |
271 | /* The recipient agreed to receive data. */ |
| 272 | int rc; |
272 | int rc; |
| 273 | uintptr_t dst; |
273 | uintptr_t dst; |
| 274 | size_t size; |
274 | size_t size; |
| 275 | size_t max_size; |
275 | size_t max_size; |
| 276 | 276 | ||
| 277 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
277 | dst = (uintptr_t)IPC_GET_ARG1(answer->data); |
| 278 | size = (size_t)IPC_GET_ARG2(answer->data); |
278 | size = (size_t)IPC_GET_ARG2(answer->data); |
| 279 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
279 | max_size = (size_t)IPC_GET_ARG2(*olddata); |
| 280 | 280 | ||
| 281 | if (size <= max_size) { |
281 | if (size <= max_size) { |
| 282 | rc = copy_to_uspace((void *) dst, |
282 | rc = copy_to_uspace((void *) dst, |
| 283 | answer->buffer, size); |
283 | answer->buffer, size); |
| 284 | if (rc) |
284 | if (rc) |
| 285 | IPC_SET_RETVAL(answer->data, rc); |
285 | IPC_SET_RETVAL(answer->data, rc); |
| 286 | } else { |
286 | } else { |
| 287 | IPC_SET_RETVAL(answer->data, ELIMIT); |
287 | IPC_SET_RETVAL(answer->data, ELIMIT); |
| 288 | } |
288 | } |
| 289 | } |
289 | } |
| 290 | free(answer->buffer); |
290 | free(answer->buffer); |
| 291 | answer->buffer = NULL; |
291 | answer->buffer = NULL; |
| 292 | } |
292 | } |
| 293 | return 0; |
293 | return 0; |
| 294 | } |
294 | } |
| 295 | 295 | ||
| 296 | /** Called before the request is sent. |
296 | /** Called before the request is sent. |
| 297 | * |
297 | * |
| 298 | * @param call Call structure with the request. |
298 | * @param call Call structure with the request. |
| 299 | * @param phone Phone that the call will be sent through. |
299 | * @param phone Phone that the call will be sent through. |
| 300 | * |
300 | * |
| 301 | * @return Return 0 on success, ELIMIT or EPERM on error. |
301 | * @return Return 0 on success, ELIMIT or EPERM on error. |
| 302 | */ |
302 | */ |
| 303 | static int request_preprocess(call_t *call, phone_t *phone) |
303 | static int request_preprocess(call_t *call, phone_t *phone) |
| 304 | { |
304 | { |
| 305 | int newphid; |
305 | int newphid; |
| 306 | size_t size; |
306 | size_t size; |
| 307 | uintptr_t src; |
307 | uintptr_t src; |
| 308 | int rc; |
308 | int rc; |
| 309 | 309 | ||
| 310 | switch (IPC_GET_METHOD(call->data)) { |
310 | switch (IPC_GET_METHOD(call->data)) { |
| 311 | case IPC_M_CONNECT_ME_TO: |
311 | case IPC_M_CONNECT_ME_TO: |
| 312 | newphid = phone_alloc(); |
312 | newphid = phone_alloc(); |
| 313 | if (newphid < 0) |
313 | if (newphid < 0) |
| 314 | return ELIMIT; |
314 | return ELIMIT; |
| 315 | /* Set arg5 for server */ |
315 | /* Set arg5 for server */ |
| 316 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
316 | IPC_SET_ARG5(call->data, (unative_t) &TASK->phones[newphid]); |
| 317 | call->flags |= IPC_CALL_CONN_ME_TO; |
317 | call->flags |= IPC_CALL_CONN_ME_TO; |
| 318 | call->priv = newphid; |
318 | call->priv = newphid; |
| 319 | break; |
319 | break; |
| 320 | case IPC_M_SHARE_OUT: |
320 | case IPC_M_SHARE_OUT: |
| 321 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
321 | size = as_area_get_size(IPC_GET_ARG1(call->data)); |
| 322 | if (!size) |
322 | if (!size) |
| 323 | return EPERM; |
323 | return EPERM; |
| 324 | IPC_SET_ARG2(call->data, size); |
324 | IPC_SET_ARG2(call->data, size); |
| 325 | break; |
325 | break; |
| 326 | case IPC_M_DATA_READ: |
326 | case IPC_M_DATA_READ: |
| 327 | size = IPC_GET_ARG2(call->data); |
327 | size = IPC_GET_ARG2(call->data); |
| 328 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
328 | if ((size <= 0 || (size > DATA_XFER_LIMIT))) |
| 329 | return ELIMIT; |
329 | return ELIMIT; |
| 330 | break; |
330 | break; |
| 331 | case IPC_M_DATA_WRITE: |
331 | case IPC_M_DATA_WRITE: |
| 332 | src = IPC_GET_ARG1(call->data); |
332 | src = IPC_GET_ARG1(call->data); |
| 333 | size = IPC_GET_ARG2(call->data); |
333 | size = IPC_GET_ARG2(call->data); |
| 334 | 334 | ||
| 335 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
335 | if ((size <= 0) || (size > DATA_XFER_LIMIT)) |
| 336 | return ELIMIT; |
336 | return ELIMIT; |
| 337 | 337 | ||
| 338 | call->buffer = (uint8_t *) malloc(size, 0); |
338 | call->buffer = (uint8_t *) malloc(size, 0); |
| 339 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
339 | rc = copy_from_uspace(call->buffer, (void *) src, size); |
| 340 | if (rc != 0) { |
340 | if (rc != 0) { |
| 341 | free(call->buffer); |
341 | free(call->buffer); |
| 342 | return rc; |
342 | return rc; |
| 343 | } |
343 | } |
| 344 | break; |
344 | break; |
| 345 | #ifdef CONFIG_UDEBUG |
345 | #ifdef CONFIG_UDEBUG |
| 346 | case IPC_M_DEBUG_ALL: |
346 | case IPC_M_DEBUG_ALL: |
| 347 | return udebug_request_preprocess(call, phone); |
347 | return udebug_request_preprocess(call, phone); |
| 348 | #endif |
348 | #endif |
| 349 | default: |
349 | default: |
| 350 | break; |
350 | break; |
| 351 | } |
351 | } |
| 352 | return 0; |
352 | return 0; |
| 353 | } |
353 | } |
| 354 | 354 | ||
| 355 | /******************************************************************************* |
355 | /******************************************************************************* |
| 356 | * Functions called to process received call/answer before passing it to uspace. |
356 | * Functions called to process received call/answer before passing it to uspace. |
| 357 | *******************************************************************************/ |
357 | *******************************************************************************/ |
| 358 | 358 | ||
| 359 | /** Do basic kernel processing of received call answer. |
359 | /** Do basic kernel processing of received call answer. |
| 360 | * |
360 | * |
| 361 | * @param call Call structure with the answer. |
361 | * @param call Call structure with the answer. |
| 362 | */ |
362 | */ |
| 363 | static void process_answer(call_t *call) |
363 | static void process_answer(call_t *call) |
| 364 | { |
364 | { |
| 365 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
365 | if (((native_t) IPC_GET_RETVAL(call->data) == EHANGUP) && |
| 366 | (call->flags & IPC_CALL_FORWARDED)) |
366 | (call->flags & IPC_CALL_FORWARDED)) |
| 367 | IPC_SET_RETVAL(call->data, EFORWARD); |
367 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 368 | 368 | ||
| 369 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
369 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
| 370 | if (IPC_GET_RETVAL(call->data)) |
370 | if (IPC_GET_RETVAL(call->data)) |
| 371 | phone_dealloc(call->priv); |
371 | phone_dealloc(call->priv); |
| 372 | else |
372 | else |
| 373 | IPC_SET_ARG5(call->data, call->priv); |
373 | IPC_SET_ARG5(call->data, call->priv); |
| 374 | } |
374 | } |
| 375 | 375 | ||
| 376 | if (call->buffer) { |
376 | if (call->buffer) { |
| 377 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
377 | /* This must be an affirmative answer to IPC_M_DATA_READ. */ |
| 378 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
378 | /* or IPC_M_DEBUG_ALL/UDEBUG_M_MEM_READ... */ |
| 379 | uintptr_t dst = IPC_GET_ARG1(call->data); |
379 | uintptr_t dst = IPC_GET_ARG1(call->data); |
| 380 | size_t size = IPC_GET_ARG2(call->data); |
380 | size_t size = IPC_GET_ARG2(call->data); |
| 381 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
381 | int rc = copy_to_uspace((void *) dst, call->buffer, size); |
| 382 | if (rc) |
382 | if (rc) |
| 383 | IPC_SET_RETVAL(call->data, rc); |
383 | IPC_SET_RETVAL(call->data, rc); |
| 384 | free(call->buffer); |
384 | free(call->buffer); |
| 385 | call->buffer = NULL; |
385 | call->buffer = NULL; |
| 386 | } |
386 | } |
| 387 | } |
387 | } |
| 388 | 388 | ||
| 389 | /** Do basic kernel processing of received call request. |
389 | /** Do basic kernel processing of received call request. |
| 390 | * |
390 | * |
| 391 | * @param box Destination answerbox structure. |
391 | * @param box Destination answerbox structure. |
| 392 | * @param call Call structure with the request. |
392 | * @param call Call structure with the request. |
| 393 | * |
393 | * |
| 394 | * @return Return 0 if the call should be passed to userspace. |
394 | * @return Return 0 if the call should be passed to userspace. |
| 395 | * Return -1 if the call should be ignored. |
395 | * Return -1 if the call should be ignored. |
| 396 | */ |
396 | */ |
| 397 | static int process_request(answerbox_t *box, call_t *call) |
397 | static int process_request(answerbox_t *box, call_t *call) |
| 398 | { |
398 | { |
| 399 | int phoneid; |
399 | int phoneid; |
| 400 | 400 | ||
| 401 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
401 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
| 402 | phoneid = phone_alloc(); |
402 | phoneid = phone_alloc(); |
| 403 | if (phoneid < 0) { /* Failed to allocate phone */ |
403 | if (phoneid < 0) { /* Failed to allocate phone */ |
| 404 | IPC_SET_RETVAL(call->data, ELIMIT); |
404 | IPC_SET_RETVAL(call->data, ELIMIT); |
| 405 | ipc_answer(box, call); |
405 | ipc_answer(box, call); |
| 406 | return -1; |
406 | return -1; |
| 407 | } |
407 | } |
| 408 | IPC_SET_ARG5(call->data, phoneid); |
408 | IPC_SET_ARG5(call->data, phoneid); |
| 409 | } |
409 | } |
| 410 | switch (IPC_GET_METHOD(call->data)) { |
410 | switch (IPC_GET_METHOD(call->data)) { |
| 411 | case IPC_M_DEBUG_ALL: |
411 | case IPC_M_DEBUG_ALL: |
| 412 | return -1; |
412 | return -1; |
| 413 | default: |
413 | default: |
| 414 | break; |
414 | break; |
| 415 | } |
415 | } |
| 416 | return 0; |
416 | return 0; |
| 417 | } |
417 | } |
| 418 | 418 | ||
| 419 | /** Make a fast call over IPC, wait for reply and return to user. |
419 | /** Make a fast call over IPC, wait for reply and return to user. |
| 420 | * |
420 | * |
| 421 | * This function can handle only three arguments of payload, but is faster than |
421 | * This function can handle only three arguments of payload, but is faster than |
| 422 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
422 | * the generic function (i.e. sys_ipc_call_sync_slow()). |
| 423 | * |
423 | * |
| 424 | * @param phoneid Phone handle for the call. |
424 | * @param phoneid Phone handle for the call. |
| 425 | * @param method Method of the call. |
425 | * @param method Method of the call. |
| 426 | * @param arg1 Service-defined payload argument. |
426 | * @param arg1 Service-defined payload argument. |
| 427 | * @param arg2 Service-defined payload argument. |
427 | * @param arg2 Service-defined payload argument. |
| 428 | * @param arg3 Service-defined payload argument. |
428 | * @param arg3 Service-defined payload argument. |
| 429 | * @param data Address of userspace structure where the reply call will |
429 | * @param data Address of userspace structure where the reply call will |
| 430 | * be stored. |
430 | * be stored. |
| 431 | * |
431 | * |
| 432 | * @return Returns 0 on success. |
432 | * @return Returns 0 on success. |
| 433 | * Return ENOENT if there is no such phone handle. |
433 | * Return ENOENT if there is no such phone handle. |
| 434 | */ |
434 | */ |
| 435 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
435 | 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) |
436 | unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) |
| 437 | { |
437 | { |
| 438 | call_t call; |
438 | call_t call; |
| 439 | phone_t *phone; |
439 | phone_t *phone; |
| 440 | int res; |
440 | int res; |
| 441 | int rc; |
441 | int rc; |
| 442 | 442 | ||
| 443 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
443 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 444 | 444 | ||
| 445 | ipc_call_static_init(&call); |
445 | ipc_call_static_init(&call); |
| 446 | IPC_SET_METHOD(call.data, method); |
446 | IPC_SET_METHOD(call.data, method); |
| 447 | IPC_SET_ARG1(call.data, arg1); |
447 | IPC_SET_ARG1(call.data, arg1); |
| 448 | IPC_SET_ARG2(call.data, arg2); |
448 | IPC_SET_ARG2(call.data, arg2); |
| 449 | IPC_SET_ARG3(call.data, arg3); |
449 | IPC_SET_ARG3(call.data, arg3); |
| 450 | /* |
450 | /* |
| 451 | * To achieve deterministic behavior, zero out arguments that are beyond |
451 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 452 | * the limits of the fast version. |
452 | * the limits of the fast version. |
| 453 | */ |
453 | */ |
| 454 | IPC_SET_ARG4(call.data, 0); |
454 | IPC_SET_ARG4(call.data, 0); |
| 455 | IPC_SET_ARG5(call.data, 0); |
455 | IPC_SET_ARG5(call.data, 0); |
| 456 | 456 | ||
| 457 | if (!(res = request_preprocess(&call, phone))) { |
457 | if (!(res = request_preprocess(&call, phone))) { |
| 458 | #ifdef CONFIG_UDEBUG |
458 | #ifdef CONFIG_UDEBUG |
| 459 | udebug_stoppable_begin(); |
459 | udebug_stoppable_begin(); |
| 460 | #endif |
460 | #endif |
| 461 | rc = ipc_call_sync(phone, &call); |
461 | rc = ipc_call_sync(phone, &call); |
| 462 | #ifdef CONFIG_UDEBUG |
462 | #ifdef CONFIG_UDEBUG |
| 463 | udebug_stoppable_end(); |
463 | udebug_stoppable_end(); |
| 464 | #endif |
464 | #endif |
| 465 | if (rc != EOK) |
465 | if (rc != EOK) |
| 466 | return rc; |
466 | return rc; |
| 467 | process_answer(&call); |
467 | process_answer(&call); |
| 468 | 468 | ||
| 469 | } else { |
469 | } else { |
| 470 | IPC_SET_RETVAL(call.data, res); |
470 | IPC_SET_RETVAL(call.data, res); |
| 471 | } |
471 | } |
| 472 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
472 | rc = STRUCT_TO_USPACE(&data->args, &call.data.args); |
| 473 | if (rc != 0) |
473 | if (rc != 0) |
| 474 | return rc; |
474 | return rc; |
| 475 | 475 | ||
| 476 | return 0; |
476 | return 0; |
| 477 | } |
477 | } |
| 478 | 478 | ||
| 479 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
479 | /** Make a synchronous IPC call allowing to transmit the entire payload. |
| 480 | * |
480 | * |
| 481 | * @param phoneid Phone handle for the call. |
481 | * @param phoneid Phone handle for the call. |
| 482 | * @param question Userspace address of call data with the request. |
482 | * @param question Userspace address of call data with the request. |
| 483 | * @param reply Userspace address of call data where to store the |
483 | * @param reply Userspace address of call data where to store the |
| 484 | * answer. |
484 | * answer. |
| 485 | * |
485 | * |
| 486 | * @return Zero on success or an error code. |
486 | * @return Zero on success or an error code. |
| 487 | */ |
487 | */ |
| 488 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
488 | unative_t sys_ipc_call_sync_slow(unative_t phoneid, ipc_data_t *question, |
| 489 | ipc_data_t *reply) |
489 | ipc_data_t *reply) |
| 490 | { |
490 | { |
| 491 | call_t call; |
491 | call_t call; |
| 492 | phone_t *phone; |
492 | phone_t *phone; |
| 493 | int res; |
493 | int res; |
| 494 | int rc; |
494 | int rc; |
| 495 | 495 | ||
| 496 | ipc_call_static_init(&call); |
496 | ipc_call_static_init(&call); |
| 497 | rc = copy_from_uspace(&call.data.args, &question->args, |
497 | rc = copy_from_uspace(&call.data.args, &question->args, |
| 498 | sizeof(call.data.args)); |
498 | sizeof(call.data.args)); |
| 499 | if (rc != 0) |
499 | if (rc != 0) |
| 500 | return (unative_t) rc; |
500 | return (unative_t) rc; |
| 501 | 501 | ||
| 502 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
502 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 503 | 503 | ||
| 504 | if (!(res = request_preprocess(&call, phone))) { |
504 | if (!(res = request_preprocess(&call, phone))) { |
| 505 | #ifdef CONFIG_UDEBUG |
505 | #ifdef CONFIG_UDEBUG |
| 506 | udebug_stoppable_begin(); |
506 | udebug_stoppable_begin(); |
| 507 | #endif |
507 | #endif |
| 508 | rc = ipc_call_sync(phone, &call); |
508 | rc = ipc_call_sync(phone, &call); |
| 509 | #ifdef CONFIG_UDEBUG |
509 | #ifdef CONFIG_UDEBUG |
| 510 | udebug_stoppable_end(); |
510 | udebug_stoppable_end(); |
| 511 | #endif |
511 | #endif |
| 512 | if (rc != EOK) |
512 | if (rc != EOK) |
| 513 | return rc; |
513 | return rc; |
| 514 | process_answer(&call); |
514 | process_answer(&call); |
| 515 | } else |
515 | } else |
| 516 | IPC_SET_RETVAL(call.data, res); |
516 | IPC_SET_RETVAL(call.data, res); |
| 517 | 517 | ||
| 518 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
518 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
| 519 | if (rc != 0) |
519 | if (rc != 0) |
| 520 | return rc; |
520 | return rc; |
| 521 | 521 | ||
| 522 | return 0; |
522 | return 0; |
| 523 | } |
523 | } |
| 524 | 524 | ||
| 525 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
525 | /** Check that the task did not exceed the allowed limit of asynchronous calls. |
| 526 | * |
526 | * |
| 527 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
527 | * @return Return 0 if limit not reached or -1 if limit exceeded. |
| 528 | */ |
528 | */ |
| 529 | static int check_call_limit(void) |
529 | static int check_call_limit(void) |
| 530 | { |
530 | { |
| 531 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
531 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
| 532 | atomic_dec(&TASK->active_calls); |
532 | atomic_dec(&TASK->active_calls); |
| 533 | return -1; |
533 | return -1; |
| 534 | } |
534 | } |
| 535 | return 0; |
535 | return 0; |
| 536 | } |
536 | } |
| 537 | 537 | ||
| 538 | /** Make a fast asynchronous call over IPC. |
538 | /** Make a fast asynchronous call over IPC. |
| 539 | * |
539 | * |
| 540 | * This function can only handle four arguments of payload, but is faster than |
540 | * This function can only handle four arguments of payload, but is faster than |
| 541 | * the generic function sys_ipc_call_async_slow(). |
541 | * the generic function sys_ipc_call_async_slow(). |
| 542 | * |
542 | * |
| 543 | * @param phoneid Phone handle for the call. |
543 | * @param phoneid Phone handle for the call. |
| 544 | * @param method Method of the call. |
544 | * @param method Method of the call. |
| 545 | * @param arg1 Service-defined payload argument. |
545 | * @param arg1 Service-defined payload argument. |
| 546 | * @param arg2 Service-defined payload argument. |
546 | * @param arg2 Service-defined payload argument. |
| 547 | * @param arg3 Service-defined payload argument. |
547 | * @param arg3 Service-defined payload argument. |
| 548 | * @param arg4 Service-defined payload argument. |
548 | * @param arg4 Service-defined payload argument. |
| 549 | * |
549 | * |
| 550 | * @return Return call hash on success. |
550 | * @return Return call hash on success. |
| 551 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
551 | * Return IPC_CALLRET_FATAL in case of a fatal error and |
| 552 | * IPC_CALLRET_TEMPORARY if there are too many pending |
552 | * IPC_CALLRET_TEMPORARY if there are too many pending |
| 553 | * asynchronous requests; answers should be handled first. |
553 | * asynchronous requests; answers should be handled first. |
| 554 | */ |
554 | */ |
| 555 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
555 | 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) |
556 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
| 557 | { |
557 | { |
| 558 | call_t *call; |
558 | call_t *call; |
| 559 | phone_t *phone; |
559 | phone_t *phone; |
| 560 | int res; |
560 | int res; |
| 561 | 561 | ||
| 562 | if (check_call_limit()) |
562 | if (check_call_limit()) |
| 563 | return IPC_CALLRET_TEMPORARY; |
563 | return IPC_CALLRET_TEMPORARY; |
| 564 | 564 | ||
| 565 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
565 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
| 566 | 566 | ||
| 567 | call = ipc_call_alloc(0); |
567 | call = ipc_call_alloc(0); |
| 568 | IPC_SET_METHOD(call->data, method); |
568 | IPC_SET_METHOD(call->data, method); |
| 569 | IPC_SET_ARG1(call->data, arg1); |
569 | IPC_SET_ARG1(call->data, arg1); |
| 570 | IPC_SET_ARG2(call->data, arg2); |
570 | IPC_SET_ARG2(call->data, arg2); |
| 571 | IPC_SET_ARG3(call->data, arg3); |
571 | IPC_SET_ARG3(call->data, arg3); |
| 572 | IPC_SET_ARG4(call->data, arg4); |
572 | IPC_SET_ARG4(call->data, arg4); |
| 573 | /* |
573 | /* |
| 574 | * To achieve deterministic behavior, zero out arguments that are beyond |
574 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 575 | * the limits of the fast version. |
575 | * the limits of the fast version. |
| 576 | */ |
576 | */ |
| 577 | IPC_SET_ARG5(call->data, 0); |
577 | IPC_SET_ARG5(call->data, 0); |
| 578 | 578 | ||
| 579 | if (!(res = request_preprocess(call, phone))) |
579 | if (!(res = request_preprocess(call, phone))) |
| 580 | ipc_call(phone, call); |
580 | ipc_call(phone, call); |
| 581 | else |
581 | else |
| 582 | ipc_backsend_err(phone, call, res); |
582 | ipc_backsend_err(phone, call, res); |
| 583 | 583 | ||
| 584 | return (unative_t) call; |
584 | return (unative_t) call; |
| 585 | } |
585 | } |
| 586 | 586 | ||
| 587 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
587 | /** Make an asynchronous IPC call allowing to transmit the entire payload. |
| 588 | * |
588 | * |
| 589 | * @param phoneid Phone handle for the call. |
589 | * @param phoneid Phone handle for the call. |
| 590 | * @param data Userspace address of call data with the request. |
590 | * @param data Userspace address of call data with the request. |
| 591 | * |
591 | * |
| 592 | * @return See sys_ipc_call_async_fast(). |
592 | * @return See sys_ipc_call_async_fast(). |
| 593 | */ |
593 | */ |
| 594 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
594 | unative_t sys_ipc_call_async_slow(unative_t phoneid, ipc_data_t *data) |
| 595 | { |
595 | { |
| 596 | call_t *call; |
596 | call_t *call; |
| 597 | phone_t *phone; |
597 | phone_t *phone; |
| 598 | int res; |
598 | int res; |
| 599 | int rc; |
599 | int rc; |
| 600 | 600 | ||
| 601 | if (check_call_limit()) |
601 | if (check_call_limit()) |
| 602 | return IPC_CALLRET_TEMPORARY; |
602 | return IPC_CALLRET_TEMPORARY; |
| 603 | 603 | ||
| 604 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
604 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
| 605 | 605 | ||
| 606 | call = ipc_call_alloc(0); |
606 | call = ipc_call_alloc(0); |
| 607 | rc = copy_from_uspace(&call->data.args, &data->args, |
607 | rc = copy_from_uspace(&call->data.args, &data->args, |
| 608 | sizeof(call->data.args)); |
608 | sizeof(call->data.args)); |
| 609 | if (rc != 0) { |
609 | if (rc != 0) { |
| 610 | ipc_call_free(call); |
610 | ipc_call_free(call); |
| 611 | return (unative_t) rc; |
611 | return (unative_t) rc; |
| 612 | } |
612 | } |
| 613 | if (!(res = request_preprocess(call, phone))) |
613 | if (!(res = request_preprocess(call, phone))) |
| 614 | ipc_call(phone, call); |
614 | ipc_call(phone, call); |
| 615 | else |
615 | else |
| 616 | ipc_backsend_err(phone, call, res); |
616 | ipc_backsend_err(phone, call, res); |
| 617 | 617 | ||
| 618 | return (unative_t) call; |
618 | return (unative_t) call; |
| 619 | } |
619 | } |
| 620 | 620 | ||
| 621 | /** Forward a received call to another destination - common code for both the |
621 | /** Forward a received call to another destination - common code for both the |
| 622 | * fast and the slow version. |
622 | * fast and the slow version. |
| 623 | * |
623 | * |
| 624 | * @param callid Hash of the call to forward. |
624 | * @param callid Hash of the call to forward. |
| 625 | * @param phoneid Phone handle to use for forwarding. |
625 | * @param phoneid Phone handle to use for forwarding. |
| 626 | * @param method New method to use for the forwarded call. |
626 | * @param method New method to use for the forwarded call. |
| 627 | * @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. |
| 628 | * @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. |
| 629 | * @param arg3 New value of the third argument for the forwarded call. |
629 | * @param arg3 New value of the third argument for the forwarded call. |
| 630 | * @param arg4 New value of the fourth argument for the forwarded call. |
630 | * @param arg4 New value of the fourth argument for the forwarded call. |
| 631 | * @param arg5 New value of the fifth argument for the forwarded call. |
631 | * @param arg5 New value of the fifth argument for the forwarded call. |
| 632 | * @param mode Flags that specify mode of the forward operation. |
632 | * @param mode Flags that specify mode of the forward operation. |
| 633 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
633 | * @param slow If true, arg3, arg4 and arg5 are considered. Otherwise |
| 634 | * the function considers only the fast version arguments: |
634 | * the function considers only the fast version arguments: |
| 635 | * i.e. arg1 and arg2. |
635 | * i.e. arg1 and arg2. |
| 636 | * |
636 | * |
| 637 | * @return Return 0 on succes, otherwise return an error code. |
637 | * @return Return 0 on succes, otherwise return an error code. |
| 638 | * |
638 | * |
| 639 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
639 | * Warning: Make sure that ARG5 is not rewritten for certain system IPC |
| 640 | */ |
640 | */ |
| 641 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
641 | static unative_t sys_ipc_forward_common(unative_t callid, unative_t phoneid, |
| 642 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
642 | unative_t method, unative_t arg1, unative_t arg2, unative_t arg3, |
| 643 | unative_t arg4, unative_t arg5, int mode, bool slow) |
643 | unative_t arg4, unative_t arg5, int mode, bool slow) |
| 644 | { |
644 | { |
| 645 | call_t *call; |
645 | call_t *call; |
| 646 | phone_t *phone; |
646 | phone_t *phone; |
| 647 | 647 | ||
| 648 | call = get_call(callid); |
648 | call = get_call(callid); |
| 649 | if (!call) |
649 | if (!call) |
| 650 | return ENOENT; |
650 | return ENOENT; |
| 651 | 651 | ||
| 652 | call->flags |= IPC_CALL_FORWARDED; |
652 | call->flags |= IPC_CALL_FORWARDED; |
| 653 | 653 | ||
| 654 | GET_CHECK_PHONE(phone, phoneid, { |
654 | GET_CHECK_PHONE(phone, phoneid, { |
| 655 | IPC_SET_RETVAL(call->data, EFORWARD); |
655 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 656 | ipc_answer(&TASK->answerbox, call); |
656 | ipc_answer(&TASK->answerbox, call); |
| 657 | return ENOENT; |
657 | return ENOENT; |
| 658 | }); |
658 | }); |
| 659 | 659 | ||
| 660 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
660 | if (!method_is_forwardable(IPC_GET_METHOD(call->data))) { |
| 661 | IPC_SET_RETVAL(call->data, EFORWARD); |
661 | IPC_SET_RETVAL(call->data, EFORWARD); |
| 662 | ipc_answer(&TASK->answerbox, call); |
662 | ipc_answer(&TASK->answerbox, call); |
| 663 | return EPERM; |
663 | return EPERM; |
| 664 | } |
664 | } |
| 665 | 665 | ||
| 666 | /* |
666 | /* |
| 667 | * Userspace is not allowed to change method of system methods on |
667 | * Userspace is not allowed to change method of system methods on |
| 668 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
668 | * forward, allow changing ARG1, ARG2, ARG3 and ARG4 by means of method, |
| 669 | * arg1, arg2 and arg3. |
669 | * arg1, arg2 and arg3. |
| 670 | * If the method is immutable, don't change anything. |
670 | * If the method is immutable, don't change anything. |
| 671 | */ |
671 | */ |
| 672 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
672 | if (!method_is_immutable(IPC_GET_METHOD(call->data))) { |
| 673 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
673 | if (method_is_system(IPC_GET_METHOD(call->data))) { |
| 674 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
674 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
| 675 | phone_dealloc(IPC_GET_ARG5(call->data)); |
675 | phone_dealloc(IPC_GET_ARG5(call->data)); |
| 676 | 676 | ||
| 677 | IPC_SET_ARG1(call->data, method); |
677 | IPC_SET_ARG1(call->data, method); |
| 678 | IPC_SET_ARG2(call->data, arg1); |
678 | IPC_SET_ARG2(call->data, arg1); |
| 679 | IPC_SET_ARG3(call->data, arg2); |
679 | IPC_SET_ARG3(call->data, arg2); |
| 680 | if (slow) { |
680 | if (slow) { |
| 681 | IPC_SET_ARG4(call->data, arg3); |
681 | IPC_SET_ARG4(call->data, arg3); |
| 682 | /* |
682 | /* |
| 683 | * For system methods we deliberately don't |
683 | * For system methods we deliberately don't |
| 684 | * overwrite ARG5. |
684 | * overwrite ARG5. |
| 685 | */ |
685 | */ |
| 686 | } |
686 | } |
| 687 | } else { |
687 | } else { |
| 688 | IPC_SET_METHOD(call->data, method); |
688 | IPC_SET_METHOD(call->data, method); |
| 689 | IPC_SET_ARG1(call->data, arg1); |
689 | IPC_SET_ARG1(call->data, arg1); |
| 690 | IPC_SET_ARG2(call->data, arg2); |
690 | IPC_SET_ARG2(call->data, arg2); |
| 691 | if (slow) { |
691 | if (slow) { |
| 692 | IPC_SET_ARG3(call->data, arg3); |
692 | IPC_SET_ARG3(call->data, arg3); |
| 693 | IPC_SET_ARG4(call->data, arg4); |
693 | IPC_SET_ARG4(call->data, arg4); |
| 694 | IPC_SET_ARG5(call->data, arg5); |
694 | IPC_SET_ARG5(call->data, arg5); |
| 695 | } |
695 | } |
| 696 | } |
696 | } |
| 697 | } |
697 | } |
| 698 | 698 | ||
| 699 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
699 | return ipc_forward(call, phone, &TASK->answerbox, mode); |
| 700 | } |
700 | } |
| 701 | 701 | ||
| 702 | /** Forward a received call to another destination - fast version. |
702 | /** Forward a received call to another destination - fast version. |
| 703 | * |
703 | * |
| 704 | * @param callid Hash of the call to forward. |
704 | * @param callid Hash of the call to forward. |
| 705 | * @param phoneid Phone handle to use for forwarding. |
705 | * @param phoneid Phone handle to use for forwarding. |
| 706 | * @param method New method to use for the forwarded call. |
706 | * @param method New method to use for the forwarded call. |
| 707 | * @param arg1 New value of the first argument for the forwarded call. |
707 | * @param arg1 New value of the first argument for the forwarded call. |
| 708 | * @param arg2 New value of the second argument for the forwarded call. |
708 | * @param arg2 New value of the second argument for the forwarded call. |
| 709 | * @param mode Flags that specify mode of the forward operation. |
709 | * @param mode Flags that specify mode of the forward operation. |
| 710 | * |
710 | * |
| 711 | * @return Return 0 on succes, otherwise return an error code. |
711 | * @return Return 0 on succes, otherwise return an error code. |
| 712 | * |
712 | * |
| 713 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
713 | * In case the original method is a system method, ARG1, ARG2 and ARG3 are |
| 714 | * overwritten in the forwarded message with the new method and the new |
714 | * overwritten in the forwarded message with the new method and the new |
| 715 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
715 | * arg1 and arg2, respectively. Otherwise the METHOD, ARG1 and ARG2 are |
| 716 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
716 | * rewritten with the new method, arg1 and arg2, respectively. Also note there |
| 717 | * is a set of immutable methods, for which the new method and arguments are not |
717 | * is a set of immutable methods, for which the new method and arguments are not |
| 718 | * set and these values are ignored. |
718 | * set and these values are ignored. |
| 719 | */ |
719 | */ |
| 720 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
720 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
| 721 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
721 | unative_t method, unative_t arg1, unative_t arg2, int mode) |
| 722 | { |
722 | { |
| 723 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
723 | return sys_ipc_forward_common(callid, phoneid, method, arg1, arg2, 0, 0, |
| 724 | 0, mode, false); |
724 | 0, mode, false); |
| 725 | } |
725 | } |
| 726 | 726 | ||
| 727 | /** Forward a received call to another destination - slow version. |
727 | /** Forward a received call to another destination - slow version. |
| 728 | * |
728 | * |
| 729 | * @param callid Hash of the call to forward. |
729 | * @param callid Hash of the call to forward. |
| 730 | * @param phoneid Phone handle to use for forwarding. |
730 | * @param phoneid Phone handle to use for forwarding. |
| 731 | * @param data Userspace address of the new IPC data. |
731 | * @param data Userspace address of the new IPC data. |
| 732 | * @param mode Flags that specify mode of the forward operation. |
732 | * @param mode Flags that specify mode of the forward operation. |
| 733 | * |
733 | * |
| 734 | * @return Return 0 on succes, otherwise return an error code. |
734 | * @return Return 0 on succes, otherwise return an error code. |
| 735 | * |
735 | * |
| 736 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
736 | * This function is the slow verision of the sys_ipc_forward_fast interface. |
| 737 | * It can copy all five new arguments and the new method from the userspace. |
737 | * It can copy all five new arguments and the new method from the userspace. |
| 738 | * It naturally extends the functionality of the fast version. For system |
738 | * It naturally extends the functionality of the fast version. For system |
| 739 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
739 | * methods, it additionally stores the new value of arg3 to ARG4. For non-system |
| 740 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
740 | * methods, it additionally stores the new value of arg3, arg4 and arg5, |
| 741 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
741 | * respectively, to ARG3, ARG4 and ARG5, respectively. |
| 742 | */ |
742 | */ |
| 743 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
743 | unative_t sys_ipc_forward_slow(unative_t callid, unative_t phoneid, |
| 744 | ipc_data_t *data, int mode) |
744 | ipc_data_t *data, int mode) |
| 745 | { |
745 | { |
| 746 | ipc_data_t newdata; |
746 | ipc_data_t newdata; |
| 747 | int rc; |
747 | int rc; |
| 748 | 748 | ||
| 749 | rc = copy_from_uspace(&newdata.args, &data->args, |
749 | rc = copy_from_uspace(&newdata.args, &data->args, |
| 750 | sizeof(newdata.args)); |
750 | sizeof(newdata.args)); |
| 751 | if (rc != 0) |
751 | if (rc != 0) |
| 752 | return (unative_t) rc; |
752 | return (unative_t) rc; |
| 753 | 753 | ||
| 754 | return sys_ipc_forward_common(callid, phoneid, |
754 | return sys_ipc_forward_common(callid, phoneid, |
| 755 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
755 | IPC_GET_METHOD(newdata), IPC_GET_ARG1(newdata), |
| 756 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
756 | IPC_GET_ARG2(newdata), IPC_GET_ARG3(newdata), |
| 757 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
757 | IPC_GET_ARG4(newdata), IPC_GET_ARG5(newdata), mode, true); |
| 758 | } |
758 | } |
| 759 | 759 | ||
| 760 | /** Answer an IPC call - fast version. |
760 | /** Answer an IPC call - fast version. |
| 761 | * |
761 | * |
| 762 | * This function can handle only two return arguments of payload, but is faster |
762 | * This function can handle only two return arguments of payload, but is faster |
| 763 | * than the generic sys_ipc_answer(). |
763 | * than the generic sys_ipc_answer(). |
| 764 | * |
764 | * |
| 765 | * @param callid Hash of the call to be answered. |
765 | * @param callid Hash of the call to be answered. |
| 766 | * @param retval Return value of the answer. |
766 | * @param retval Return value of the answer. |
| 767 | * @param arg1 Service-defined return value. |
767 | * @param arg1 Service-defined return value. |
| 768 | * @param arg2 Service-defined return value. |
768 | * @param arg2 Service-defined return value. |
| 769 | * @param arg3 Service-defined return value. |
769 | * @param arg3 Service-defined return value. |
| 770 | * @param arg4 Service-defined return value. |
770 | * @param arg4 Service-defined return value. |
| 771 | * |
771 | * |
| 772 | * @return Return 0 on success, otherwise return an error code. |
772 | * @return Return 0 on success, otherwise return an error code. |
| 773 | */ |
773 | */ |
| 774 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
774 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
| 775 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
775 | unative_t arg1, unative_t arg2, unative_t arg3, unative_t arg4) |
| 776 | { |
776 | { |
| 777 | call_t *call; |
777 | call_t *call; |
| 778 | ipc_data_t saved_data; |
778 | ipc_data_t saved_data; |
| 779 | int saveddata = 0; |
779 | int saveddata = 0; |
| 780 | int rc; |
780 | int rc; |
| 781 | 781 | ||
| 782 | /* Do not answer notification callids */ |
782 | /* Do not answer notification callids */ |
| 783 | if (callid & IPC_CALLID_NOTIFICATION) |
783 | if (callid & IPC_CALLID_NOTIFICATION) |
| 784 | return 0; |
784 | return 0; |
| 785 | 785 | ||
| 786 | call = get_call(callid); |
786 | call = get_call(callid); |
| 787 | if (!call) |
787 | if (!call) |
| 788 | return ENOENT; |
788 | return ENOENT; |
| 789 | 789 | ||
| 790 | if (answer_need_old(call)) { |
790 | if (answer_need_old(call)) { |
| 791 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
791 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
| 792 | saveddata = 1; |
792 | saveddata = 1; |
| 793 | } |
793 | } |
| 794 | 794 | ||
| 795 | IPC_SET_RETVAL(call->data, retval); |
795 | IPC_SET_RETVAL(call->data, retval); |
| 796 | IPC_SET_ARG1(call->data, arg1); |
796 | IPC_SET_ARG1(call->data, arg1); |
| 797 | IPC_SET_ARG2(call->data, arg2); |
797 | IPC_SET_ARG2(call->data, arg2); |
| 798 | IPC_SET_ARG3(call->data, arg3); |
798 | IPC_SET_ARG3(call->data, arg3); |
| 799 | IPC_SET_ARG4(call->data, arg4); |
799 | IPC_SET_ARG4(call->data, arg4); |
| 800 | /* |
800 | /* |
| 801 | * To achieve deterministic behavior, zero out arguments that are beyond |
801 | * To achieve deterministic behavior, zero out arguments that are beyond |
| 802 | * the limits of the fast version. |
802 | * the limits of the fast version. |
| 803 | */ |
803 | */ |
| 804 | IPC_SET_ARG5(call->data, 0); |
804 | IPC_SET_ARG5(call->data, 0); |
| 805 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
805 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
| 806 | 806 | ||
| 807 | ipc_answer(&TASK->answerbox, call); |
807 | ipc_answer(&TASK->answerbox, call); |
| 808 | return rc; |
808 | return rc; |
| 809 | } |
809 | } |
| 810 | 810 | ||
| 811 | /** Answer an IPC call. |
811 | /** Answer an IPC call. |
| 812 | * |
812 | * |
| 813 | * @param callid Hash of the call to be answered. |
813 | * @param callid Hash of the call to be answered. |
| 814 | * @param data Userspace address of call data with the answer. |
814 | * @param data Userspace address of call data with the answer. |
| 815 | * |
815 | * |
| 816 | * @return Return 0 on success, otherwise return an error code. |
816 | * @return Return 0 on success, otherwise return an error code. |
| 817 | */ |
817 | */ |
| 818 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
818 | unative_t sys_ipc_answer_slow(unative_t callid, ipc_data_t *data) |
| 819 | { |
819 | { |
| 820 | call_t *call; |
820 | call_t *call; |
| 821 | ipc_data_t saved_data; |
821 | ipc_data_t saved_data; |
| 822 | int saveddata = 0; |
822 | int saveddata = 0; |
| 823 | int rc; |
823 | int rc; |
| 824 | 824 | ||
| 825 | /* Do not answer notification callids */ |
825 | /* Do not answer notification callids */ |
| 826 | if (callid & IPC_CALLID_NOTIFICATION) |
826 | if (callid & IPC_CALLID_NOTIFICATION) |
| 827 | return 0; |
827 | return 0; |
| 828 | 828 | ||
| 829 | call = get_call(callid); |
829 | call = get_call(callid); |
| 830 | if (!call) |
830 | if (!call) |
| 831 | return ENOENT; |
831 | return ENOENT; |
| 832 | 832 | ||
| 833 | if (answer_need_old(call)) { |
833 | if (answer_need_old(call)) { |
| 834 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
834 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
| 835 | saveddata = 1; |
835 | saveddata = 1; |
| 836 | } |
836 | } |
| 837 | rc = copy_from_uspace(&call->data.args, &data->args, |
837 | rc = copy_from_uspace(&call->data.args, &data->args, |
| 838 | sizeof(call->data.args)); |
838 | sizeof(call->data.args)); |
| 839 | if (rc != 0) |
839 | if (rc != 0) |
| 840 | return rc; |
840 | return rc; |
| 841 | 841 | ||
| 842 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
842 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
| 843 | 843 | ||
| 844 | ipc_answer(&TASK->answerbox, call); |
844 | ipc_answer(&TASK->answerbox, call); |
| 845 | 845 | ||
| 846 | return rc; |
846 | return rc; |
| 847 | } |
847 | } |
| 848 | 848 | ||
| 849 | /** Hang up a phone. |
849 | /** Hang up a phone. |
| 850 | * |
850 | * |
| 851 | * @param Phone handle of the phone to be hung up. |
851 | * @param Phone handle of the phone to be hung up. |
| 852 | * |
852 | * |
| 853 | * @return Return 0 on success or an error code. |
853 | * @return Return 0 on success or an error code. |
| 854 | */ |
854 | */ |
| 855 | unative_t sys_ipc_hangup(int phoneid) |
855 | unative_t sys_ipc_hangup(int phoneid) |
| 856 | { |
856 | { |
| 857 | phone_t *phone; |
857 | phone_t *phone; |
| 858 | 858 | ||
| 859 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
859 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
| 860 | 860 | ||
| 861 | if (ipc_phone_hangup(phone)) |
861 | if (ipc_phone_hangup(phone)) |
| 862 | return -1; |
862 | return -1; |
| 863 | 863 | ||
| 864 | return 0; |
864 | return 0; |
| 865 | } |
865 | } |
| 866 | 866 | ||
| 867 | /** Wait for an incoming IPC call or an answer. |
867 | /** Wait for an incoming IPC call or an answer. |
| 868 | * |
868 | * |
| 869 | * @param calldata Pointer to buffer where the call/answer data is stored. |
869 | * @param calldata Pointer to buffer where the call/answer data is stored. |
| 870 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
870 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
| 871 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
871 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() |
| 872 | * for explanation. |
872 | * for explanation. |
| 873 | * |
873 | * |
| 874 | * @return Hash of the call. |
874 | * @return Hash of the call. |
| 875 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
875 | * If IPC_CALLID_NOTIFICATION bit is set in the hash, the |
| 876 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
876 | * call is a notification. IPC_CALLID_ANSWERED denotes an |
| 877 | * answer. |
877 | * answer. |
| 878 | */ |
878 | */ |
| 879 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
879 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
| 880 | { |
880 | { |
| 881 | call_t *call; |
881 | call_t *call; |
| 882 | 882 | ||
| 883 | restart: |
883 | restart: |
| 884 | 884 | ||
| 885 | #ifdef CONFIG_UDEBUG |
885 | #ifdef CONFIG_UDEBUG |
| 886 | udebug_stoppable_begin(); |
886 | udebug_stoppable_begin(); |
| 887 | #endif |
887 | #endif |
| 888 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
888 | call = ipc_wait_for_call(&TASK->answerbox, usec, |
| 889 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
889 | flags | SYNCH_FLAGS_INTERRUPTIBLE); |
| 890 | 890 | ||
| 891 | #ifdef CONFIG_UDEBUG |
891 | #ifdef CONFIG_UDEBUG |
| 892 | udebug_stoppable_end(); |
892 | udebug_stoppable_end(); |
| 893 | #endif |
893 | #endif |
| 894 | if (!call) |
894 | if (!call) |
| 895 | return 0; |
895 | return 0; |
| 896 | 896 | ||
| 897 | if (call->flags & IPC_CALL_NOTIF) { |
897 | if (call->flags & IPC_CALL_NOTIF) { |
| 898 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
898 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
| 899 | 899 | ||
| 900 | /* Set in_phone_hash to the interrupt counter */ |
900 | /* Set in_phone_hash to the interrupt counter */ |
| 901 | call->data.phone = (void *) call->priv; |
901 | call->data.phone = (void *) call->priv; |
| 902 | 902 | ||
| 903 | STRUCT_TO_USPACE(calldata, &call->data); |
903 | STRUCT_TO_USPACE(calldata, &call->data); |
| 904 | 904 | ||
| 905 | ipc_call_free(call); |
905 | ipc_call_free(call); |
| 906 | 906 | ||
| 907 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
907 | return ((unative_t) call) | IPC_CALLID_NOTIFICATION; |
| 908 | } |
908 | } |
| 909 | 909 | ||
| 910 | if (call->flags & IPC_CALL_ANSWERED) { |
910 | if (call->flags & IPC_CALL_ANSWERED) { |
| 911 | process_answer(call); |
911 | process_answer(call); |
| 912 | 912 | ||
| 913 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
913 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
| 914 | 914 | ||
| 915 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
915 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
| 916 | ipc_call_free(call); |
916 | ipc_call_free(call); |
| 917 | goto restart; |
917 | goto restart; |
| 918 | } else { |
918 | } else { |
| 919 | /* |
919 | /* |
| 920 | * Decrement the counter of active calls only if the |
920 | * Decrement the counter of active calls only if the |
| 921 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
921 | * call is not an answer to IPC_M_PHONE_HUNGUP, |
| 922 | * which doesn't contribute to the counter. |
922 | * which doesn't contribute to the counter. |
| 923 | */ |
923 | */ |
| 924 | atomic_dec(&TASK->active_calls); |
924 | atomic_dec(&TASK->active_calls); |
| 925 | } |
925 | } |
| 926 | 926 | ||
| 927 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
927 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
| 928 | ipc_call_free(call); |
928 | ipc_call_free(call); |
| 929 | 929 | ||
| 930 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
930 | return ((unative_t) call) | IPC_CALLID_ANSWERED; |
| 931 | } |
931 | } |
| 932 | 932 | ||
| 933 | if (process_request(&TASK->answerbox, call)) |
933 | if (process_request(&TASK->answerbox, call)) |
| 934 | goto restart; |
934 | goto restart; |
| 935 | 935 | ||
| 936 | /* Include phone address('id') of the caller in the request, |
936 | /* Include phone address('id') of the caller in the request, |
| 937 | * copy whole call->data, not only call->data.args */ |
937 | * copy whole call->data, not only call->data.args */ |
| 938 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
938 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
| 939 | /* XXX |
939 | /* |
| 940 | * To avoid deadlocks in synchronous calls |
940 | * The callee will not receive this call and no one else has |
| 941 | * this should be replaced by discarding |
- | |
| 942 | * the call and notifying the caller. |
941 | * a chance to answer it. Reply with the EPARTY error code. |
| 943 | */ |
942 | */ |
| - | 943 | ipc_data_t saved_data; |
|
| - | 944 | int saveddata = 0; |
|
| - | 945 | ||
| - | 946 | if (answer_need_old(call)) { |
|
| - | 947 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
|
| - | 948 | saveddata = 1; |
|
| - | 949 | } |
|
| - | 950 | ||
| - | 951 | IPC_SET_RETVAL(call->data, EPARTY); |
|
| - | 952 | (void) answer_preprocess(call, saveddata ? &saved_data : NULL); |
|
| - | 953 | ipc_answer(&TASK->answerbox, call); |
|
| 944 | return 0; |
954 | return 0; |
| 945 | } |
955 | } |
| 946 | return (unative_t)call; |
956 | return (unative_t)call; |
| 947 | } |
957 | } |
| 948 | 958 | ||
| 949 | /** Connect an IRQ handler to a task. |
959 | /** Connect an IRQ handler to a task. |
| 950 | * |
960 | * |
| 951 | * @param inr IRQ number. |
961 | * @param inr IRQ number. |
| 952 | * @param devno Device number. |
962 | * @param devno Device number. |
| 953 | * @param method Method to be associated with the notification. |
963 | * @param method Method to be associated with the notification. |
| 954 | * @param ucode Uspace pointer to the top-half pseudocode. |
964 | * @param ucode Uspace pointer to the top-half pseudocode. |
| 955 | * |
965 | * |
| 956 | * @return EPERM or a return code returned by ipc_irq_register(). |
966 | * @return EPERM or a return code returned by ipc_irq_register(). |
| 957 | */ |
967 | */ |
| 958 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
968 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, |
| 959 | irq_code_t *ucode) |
969 | irq_code_t *ucode) |
| 960 | { |
970 | { |
| 961 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
971 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
| 962 | return EPERM; |
972 | return EPERM; |
| 963 | 973 | ||
| 964 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
974 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
| 965 | } |
975 | } |
| 966 | 976 | ||
| 967 | /** Disconnect an IRQ handler from a task. |
977 | /** Disconnect an IRQ handler from a task. |
| 968 | * |
978 | * |
| 969 | * @param inr IRQ number. |
979 | * @param inr IRQ number. |
| 970 | * @param devno Device number. |
980 | * @param devno Device number. |
| 971 | * |
981 | * |
| 972 | * @return Zero on success or EPERM on error.. |
982 | * @return Zero on success or EPERM on error.. |
| 973 | */ |
983 | */ |
| 974 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
984 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
| 975 | { |
985 | { |
| 976 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
986 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
| 977 | return EPERM; |
987 | return EPERM; |
| 978 | 988 | ||
| 979 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
989 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
| 980 | 990 | ||
| 981 | return 0; |
991 | return 0; |
| 982 | } |
992 | } |
| 983 | 993 | ||
| 984 | #include <console/console.h> |
994 | #include <console/console.h> |
| 985 | 995 | ||
| 986 | /** |
996 | /** |
| 987 | * Syscall connect to a task by id. |
997 | * Syscall connect to a task by id. |
| 988 | * |
998 | * |
| 989 | * @return Phone id on success, or negative error code. |
999 | * @return Phone id on success, or negative error code. |
| 990 | */ |
1000 | */ |
| 991 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
1001 | unative_t sys_ipc_connect_kbox(sysarg64_t *uspace_taskid_arg) |
| 992 | { |
1002 | { |
| 993 | #ifdef CONFIG_UDEBUG |
1003 | #ifdef CONFIG_UDEBUG |
| 994 | sysarg64_t taskid_arg; |
1004 | sysarg64_t taskid_arg; |
| 995 | int rc; |
1005 | int rc; |
| 996 | 1006 | ||
| 997 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
1007 | rc = copy_from_uspace(&taskid_arg, uspace_taskid_arg, sizeof(sysarg64_t)); |
| 998 | if (rc != 0) |
1008 | if (rc != 0) |
| 999 | return (unative_t) rc; |
1009 | return (unative_t) rc; |
| 1000 | 1010 | ||
| 1001 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
1011 | LOG("sys_ipc_connect_kbox(%" PRIu64 ")\n", taskid_arg.value); |
| 1002 | 1012 | ||
| 1003 | return ipc_connect_kbox(taskid_arg.value); |
1013 | return ipc_connect_kbox(taskid_arg.value); |
| 1004 | #else |
1014 | #else |
| 1005 | return (unative_t) ENOTSUP; |
1015 | return (unative_t) ENOTSUP; |
| 1006 | #endif |
1016 | #endif |
| 1007 | } |
1017 | } |
| 1008 | 1018 | ||
| 1009 | /** @} |
1019 | /** @} |
| 1010 | */ |
1020 | */ |
| 1011 | 1021 | ||