Changes in / [3ffd4c3:983cabe8] in mainline
- Files:
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- 13 added
- 13 edited
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abi/include/ipc/ipc.h (modified) (1 diff)
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kernel/Makefile (modified) (1 diff)
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kernel/generic/include/config.h (modified) (1 diff)
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kernel/generic/include/ipc/ipc.h (modified) (5 diffs)
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kernel/generic/include/ipc/ipcrsc.h (modified) (1 diff)
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kernel/generic/include/ipc/sysipc_ops.h (added)
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kernel/generic/include/ipc/sysipc_priv.h (added)
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kernel/generic/include/proc/task.h (modified) (1 diff)
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kernel/generic/src/ipc/event.c (modified) (1 diff)
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kernel/generic/src/ipc/ipc.c (modified) (20 diffs)
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kernel/generic/src/ipc/ipcrsc.c (modified) (5 diffs)
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kernel/generic/src/ipc/irq.c (modified) (1 diff)
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kernel/generic/src/ipc/kbox.c (modified) (3 diffs)
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kernel/generic/src/ipc/ops/clnestab.c (added)
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kernel/generic/src/ipc/ops/conctmeto.c (added)
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kernel/generic/src/ipc/ops/concttome.c (added)
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kernel/generic/src/ipc/ops/connclone.c (added)
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kernel/generic/src/ipc/ops/dataread.c (added)
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kernel/generic/src/ipc/ops/datawrite.c (added)
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kernel/generic/src/ipc/ops/debug.c (added)
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kernel/generic/src/ipc/ops/sharein.c (added)
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kernel/generic/src/ipc/ops/shareout.c (added)
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kernel/generic/src/ipc/ops/stchngath.c (added)
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kernel/generic/src/ipc/sysipc.c (modified) (8 diffs)
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kernel/generic/src/ipc/sysipc_ops.c (added)
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kernel/generic/src/proc/task.c (modified) (4 diffs)
Legend:
- Unmodified
- Added
- Removed
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abi/include/ipc/ipc.h
r3ffd4c3 r983cabe8 57 57 #define IPC_CALL_FORWARDED (1 << 2) 58 58 59 /** Identify connect_me_to answer */60 #define IPC_CALL_CONN_ME_TO (1 << 3)61 62 59 /** Interrupt notification */ 63 #define IPC_CALL_NOTIF (1 << 4)60 #define IPC_CALL_NOTIF (1 << 3) 64 61 65 62 -
kernel/Makefile
r3ffd4c3 r983cabe8 257 257 generic/src/ipc/ipc.c \ 258 258 generic/src/ipc/sysipc.c \ 259 generic/src/ipc/sysipc_ops.c \ 260 generic/src/ipc/ops/clnestab.c \ 261 generic/src/ipc/ops/conctmeto.c \ 262 generic/src/ipc/ops/concttome.c \ 263 generic/src/ipc/ops/connclone.c \ 264 generic/src/ipc/ops/dataread.c \ 265 generic/src/ipc/ops/datawrite.c \ 266 generic/src/ipc/ops/debug.c \ 267 generic/src/ipc/ops/sharein.c \ 268 generic/src/ipc/ops/shareout.c \ 269 generic/src/ipc/ops/stchngath.c \ 259 270 generic/src/ipc/ipcrsc.c \ 260 271 generic/src/ipc/irq.c \ -
kernel/generic/include/config.h
r3ffd4c3 r983cabe8 47 47 #define CONFIG_INIT_TASKS 32 48 48 #define CONFIG_TASK_NAME_BUFLEN 32 49 50 /** 51 * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ 52 * requests. 53 */ 54 #define DATA_XFER_LIMIT (64 * 1024) 49 55 50 56 #ifndef __ASM__ -
kernel/generic/include/ipc/ipc.h
r3ffd4c3 r983cabe8 72 72 typedef struct answerbox { 73 73 IRQ_SPINLOCK_DECLARE(lock); 74 75 /** Answerbox is active until it enters cleanup. */ 76 bool active; 74 77 75 78 struct task *task; … … 106 109 107 110 typedef struct { 108 link_t link; 111 /** 112 * Task link. 113 * Valid only when the call is not forgotten. 114 * Protected by the task's active_calls_lock. 115 */ 116 link_t ta_link; 117 118 /** Answerbox link. */ 119 link_t ab_link; 109 120 110 121 unsigned int flags; 122 123 /** Protects the forget member. */ 124 SPINLOCK_DECLARE(forget_lock); 125 126 /** 127 * True if the caller 'forgot' this call and donated it to the callee. 128 * Forgotten calls are discarded upon answering (the answer is not 129 * delivered) and answered calls cannot be forgotten. Forgotten calls 130 * also do not figure on the task's active call list. 131 * 132 * We keep this separate from the flags so that it is not necessary 133 * to take a lock when accessing them. 134 */ 135 bool forget; 136 137 /** True if the call is in the active list. */ 138 bool active; 111 139 112 /** Identification of the caller. */ 140 /** 141 * Identification of the caller. 142 * Valid only when the call is not forgotten. 143 */ 113 144 struct task *sender; 145 146 /** Phone which was used to send the call. */ 147 phone_t *caller_phone; 114 148 115 149 /** Private data to internal IPC. */ … … 118 152 /** Data passed from/to userspace. */ 119 153 ipc_data_t data; 120 154 155 /** Method as it was sent in the request. */ 156 sysarg_t request_method; 157 121 158 /** Buffer for IPC_M_DATA_WRITE and IPC_M_DATA_READ. */ 122 159 uint8_t *buffer; 123 124 /*125 * The forward operation can masquerade the caller phone. For those126 * cases, we must keep it aside so that the answer is processed127 * correctly.128 */129 phone_t *caller_phone;130 160 } call_t; 131 161 … … 141 171 extern int ipc_forward(call_t *, phone_t *, answerbox_t *, unsigned int); 142 172 extern void ipc_answer(answerbox_t *, call_t *); 173 extern void _ipc_answer_free_call(call_t *, bool); 143 174 144 175 extern void ipc_phone_init(phone_t *); 145 extern voidipc_phone_connect(phone_t *, answerbox_t *);176 extern bool ipc_phone_connect(phone_t *, answerbox_t *); 146 177 extern int ipc_phone_hangup(phone_t *); 147 178 … … 151 182 extern void ipc_backsend_err(phone_t *, call_t *, sysarg_t); 152 183 extern void ipc_answerbox_slam_phones(answerbox_t *, bool); 153 extern void ipc_cleanup_call_list( list_t *);184 extern void ipc_cleanup_call_list(answerbox_t *, list_t *); 154 185 155 186 extern void ipc_print_task(task_id_t); -
kernel/generic/include/ipc/ipcrsc.h
r3ffd4c3 r983cabe8 40 40 41 41 extern call_t *get_call(sysarg_t); 42 extern int phone_get(sysarg_t, phone_t **); 42 43 extern int phone_alloc(task_t *); 43 extern voidphone_connect(int, answerbox_t *);44 extern bool phone_connect(int, answerbox_t *); 44 45 extern void phone_dealloc(int); 45 46 -
kernel/generic/include/proc/task.h
r3ffd4c3 r983cabe8 91 91 92 92 /* IPC stuff */ 93 answerbox_t answerbox; /**< Communication endpoint */ 93 94 /** Receiving communication endpoint */ 95 answerbox_t answerbox; 96 97 /** Sending communication endpoints */ 94 98 phone_t phones[IPC_MAX_PHONES]; 95 stats_ipc_t ipc_info; /**< IPC statistics */ 99 100 /** Spinlock protecting the active_calls list. */ 101 SPINLOCK_DECLARE(active_calls_lock); 102 103 /** 104 * List of all calls sent by this task that have not yet been 105 * answered. 106 */ 107 list_t active_calls; 108 96 109 event_t events[EVENT_TASK_END - EVENT_END]; 110 111 /** IPC statistics */ 112 stats_ipc_t ipc_info; 97 113 98 114 #ifdef CONFIG_UDEBUG -
kernel/generic/src/ipc/event.c
r3ffd4c3 r983cabe8 163 163 call->data.task_id = TASK ? TASK->taskid : 0; 164 164 165 irq_spinlock_lock(&event->answerbox->irq_lock, true); 166 list_append(&call->link, &event->answerbox->irq_notifs); 167 irq_spinlock_unlock(&event->answerbox->irq_lock, true); 168 169 waitq_wakeup(&event->answerbox->wq, WAKEUP_FIRST); 165 irq_spinlock_lock(&event->answerbox->irq_lock, 166 true); 167 list_append(&call->ab_link, 168 &event->answerbox->irq_notifs); 169 irq_spinlock_unlock(&event->answerbox->irq_lock, 170 true); 171 172 waitq_wakeup(&event->answerbox->wq, 173 WAKEUP_FIRST); 170 174 171 175 if (mask) -
kernel/generic/src/ipc/ipc.c
r3ffd4c3 r983cabe8 45 45 #include <ipc/kbox.h> 46 46 #include <ipc/event.h> 47 #include <ipc/sysipc_ops.h> 48 #include <ipc/sysipc_priv.h> 47 49 #include <errno.h> 48 50 #include <mm/slab.h> … … 71 73 { 72 74 memsetb(call, sizeof(*call), 0); 75 spinlock_initialize(&call->forget_lock, "forget_lock"); 76 call->active = false; 77 call->forget = false; 73 78 call->sender = TASK; 74 79 call->buffer = NULL; … … 132 137 * @param phone Initialized phone structure. 133 138 * @param box Initialized answerbox structure. 134 * 135 */ 136 void ipc_phone_connect(phone_t *phone, answerbox_t *box) 137 { 139 * @return True if the phone was connected, false otherwise. 140 */ 141 bool ipc_phone_connect(phone_t *phone, answerbox_t *box) 142 { 143 bool active; 144 138 145 mutex_lock(&phone->lock); 139 140 phone->state = IPC_PHONE_CONNECTED;141 phone->callee = box;142 143 146 irq_spinlock_lock(&box->lock, true); 144 list_append(&phone->link, &box->connected_phones); 147 148 active = box->active; 149 if (active) { 150 phone->state = IPC_PHONE_CONNECTED; 151 phone->callee = box; 152 list_append(&phone->link, &box->connected_phones); 153 } 154 145 155 irq_spinlock_unlock(&box->lock, true); 146 147 156 mutex_unlock(&phone->lock); 157 158 return active; 148 159 } 149 160 … … 167 178 * 168 179 */ 169 static void _ipc_answer_free_call(call_t *call, bool selflocked) 170 { 171 answerbox_t *callerbox = &call->sender->answerbox; 172 bool do_lock = ((!selflocked) || callerbox != (&TASK->answerbox)); 173 180 void _ipc_answer_free_call(call_t *call, bool selflocked) 181 { 174 182 /* Count sent answer */ 175 183 irq_spinlock_lock(&TASK->lock, true); 176 184 TASK->ipc_info.answer_sent++; 177 185 irq_spinlock_unlock(&TASK->lock, true); 186 187 spinlock_lock(&call->forget_lock); 188 if (call->forget) { 189 /* This is a forgotten call and call->sender is not valid. */ 190 spinlock_unlock(&call->forget_lock); 191 ipc_call_free(call); 192 return; 193 } else { 194 /* 195 * If the call is still active, i.e. it was answered 196 * in a non-standard way, remove the call from the 197 * sender's active call list. 198 */ 199 if (call->active) { 200 spinlock_lock(&call->sender->active_calls_lock); 201 list_remove(&call->ta_link); 202 spinlock_unlock(&call->sender->active_calls_lock); 203 } 204 } 205 spinlock_unlock(&call->forget_lock); 206 207 answerbox_t *callerbox = &call->sender->answerbox; 208 bool do_lock = ((!selflocked) || (callerbox != &TASK->answerbox)); 178 209 179 210 call->flags |= IPC_CALL_ANSWERED; 180 211 181 if (call->flags & IPC_CALL_FORWARDED) {182 if (call->caller_phone) {183 /* Demasquerade the caller phone. */184 call->data.phone = call->caller_phone;185 }186 }187 188 212 call->data.task_id = TASK->taskid; 189 213 … … 191 215 irq_spinlock_lock(&callerbox->lock, true); 192 216 193 list_append(&call-> link, &callerbox->answers);217 list_append(&call->ab_link, &callerbox->answers); 194 218 195 219 if (do_lock) … … 209 233 /* Remove from active box */ 210 234 irq_spinlock_lock(&box->lock, true); 211 list_remove(&call-> link);235 list_remove(&call->ab_link); 212 236 irq_spinlock_unlock(&box->lock, true); 213 237 … … 228 252 void ipc_backsend_err(phone_t *phone, call_t *call, sysarg_t err) 229 253 { 254 call->caller_phone = phone; 230 255 call->data.phone = phone; 231 256 atomic_inc(&phone->active_calls); 257 258 spinlock_lock(&TASK->active_calls_lock); 259 list_append(&call->ta_link, &TASK->active_calls); 260 spinlock_unlock(&TASK->active_calls_lock); 261 232 262 IPC_SET_RETVAL(call->data, err); 233 263 _ipc_answer_free_call(call, false); … … 250 280 if (!(call->flags & IPC_CALL_FORWARDED)) { 251 281 atomic_inc(&phone->active_calls); 282 283 call->caller_phone = phone; 284 call->active = true; 285 286 spinlock_lock(&TASK->active_calls_lock); 287 list_append(&call->ta_link, &TASK->active_calls); 288 spinlock_unlock(&TASK->active_calls_lock); 289 252 290 call->data.phone = phone; 253 291 call->data.task_id = TASK->taskid; … … 255 293 256 294 irq_spinlock_lock(&box->lock, true); 257 list_append(&call-> link, &box->calls);295 list_append(&call->ab_link, &box->calls); 258 296 irq_spinlock_unlock(&box->lock, true); 259 297 … … 275 313 if (phone->state != IPC_PHONE_CONNECTED) { 276 314 mutex_unlock(&phone->lock); 277 if (call->flags & IPC_CALL_FORWARDED) { 278 IPC_SET_RETVAL(call->data, EFORWARD); 279 _ipc_answer_free_call(call, false); 280 } else { 315 if (!(call->flags & IPC_CALL_FORWARDED)) { 281 316 if (phone->state == IPC_PHONE_HUNGUP) 282 317 ipc_backsend_err(phone, call, EHANGUP); … … 356 391 TASK->ipc_info.forwarded++; 357 392 irq_spinlock_pass(&TASK->lock, &oldbox->lock); 358 list_remove(&call-> link);393 list_remove(&call->ab_link); 359 394 irq_spinlock_unlock(&oldbox->lock, true); 360 395 361 396 if (mode & IPC_FF_ROUTE_FROM_ME) { 362 if (!call->caller_phone)363 call->caller_phone = call->data.phone;364 397 call->data.phone = newphone; 365 398 call->data.task_id = TASK->taskid; … … 406 439 407 440 request = list_get_instance(list_first(&box->irq_notifs), 408 call_t, link);409 list_remove(&request-> link);441 call_t, ab_link); 442 list_remove(&request->ab_link); 410 443 411 444 irq_spinlock_unlock(&box->irq_lock, false); … … 416 449 /* Handle asynchronous answers */ 417 450 request = list_get_instance(list_first(&box->answers), 418 call_t, link);419 list_remove(&request-> link);420 atomic_dec(&request-> data.phone->active_calls);451 call_t, ab_link); 452 list_remove(&request->ab_link); 453 atomic_dec(&request->caller_phone->active_calls); 421 454 } else if (!list_empty(&box->calls)) { 422 455 /* Count received call */ … … 425 458 /* Handle requests */ 426 459 request = list_get_instance(list_first(&box->calls), 427 call_t, link);428 list_remove(&request-> link);460 call_t, ab_link); 461 list_remove(&request->ab_link); 429 462 430 463 /* Append request to dispatch queue */ 431 list_append(&request-> link, &box->dispatched_calls);464 list_append(&request->ab_link, &box->dispatched_calls); 432 465 } else { 433 466 /* This can happen regularly after ipc_cleanup */ … … 449 482 /** Answer all calls from list with EHANGUP answer. 450 483 * 484 * @param box Answerbox with the list. 451 485 * @param lst Head of the list to be cleaned up. 452 * 453 */ 454 void ipc_cleanup_call_list(list_t *lst) 455 { 486 */ 487 void ipc_cleanup_call_list(answerbox_t *box, list_t *lst) 488 { 489 irq_spinlock_lock(&box->lock, true); 456 490 while (!list_empty(lst)) { 457 call_t *call = list_get_instance(list_first(lst), call_t, link); 458 if (call->buffer) 459 free(call->buffer); 460 461 list_remove(&call->link); 462 491 call_t *call = list_get_instance(list_first(lst), call_t, 492 ab_link); 493 494 list_remove(&call->ab_link); 495 496 irq_spinlock_unlock(&box->lock, true); 497 498 ipc_data_t old = call->data; 463 499 IPC_SET_RETVAL(call->data, EHANGUP); 500 answer_preprocess(call, &old); 464 501 _ipc_answer_free_call(call, true); 465 } 502 503 irq_spinlock_lock(&box->lock, true); 504 } 505 irq_spinlock_unlock(&box->lock, true); 466 506 } 467 507 … … 529 569 } 530 570 571 static void ipc_forget_all_active_calls(void) 572 { 573 call_t *call; 574 575 restart: 576 spinlock_lock(&TASK->active_calls_lock); 577 if (list_empty(&TASK->active_calls)) { 578 /* 579 * We are done, there are no more active calls. 580 * Nota bene: there may still be answers waiting for pick up. 581 */ 582 spinlock_unlock(&TASK->active_calls_lock); 583 return; 584 } 585 586 call = list_get_instance(list_first(&TASK->active_calls), call_t, 587 ta_link); 588 589 if (!spinlock_trylock(&call->forget_lock)) { 590 /* 591 * Avoid deadlock and let async_answer() or 592 * _ipc_answer_free_call() win the race to dequeue the first 593 * call on the list. 594 */ 595 spinlock_unlock(&TASK->active_calls_lock); 596 goto restart; 597 } 598 599 /* 600 * Forget the call and donate it to the task which holds up the answer. 601 */ 602 603 call->forget = true; 604 call->sender = NULL; 605 list_remove(&call->ta_link); 606 607 spinlock_unlock(&call->forget_lock); 608 spinlock_unlock(&TASK->active_calls_lock); 609 610 atomic_dec(&call->caller_phone->active_calls); 611 612 sysipc_ops_t *ops = sysipc_ops_get(call->request_method); 613 if (ops->request_forget) 614 ops->request_forget(call); 615 616 goto restart; 617 } 618 619 /** Wait for all answers to asynchronous calls to arrive. */ 620 static void ipc_wait_for_all_answered_calls(void) 621 { 622 call_t *call; 623 size_t i; 624 625 restart: 626 /* 627 * Go through all phones, until they are all free. 628 * Locking is needed as there may be connection handshakes in progress. 629 */ 630 for (i = 0; i < IPC_MAX_PHONES; i++) { 631 phone_t *phone = &TASK->phones[i]; 632 633 mutex_lock(&phone->lock); 634 if ((phone->state == IPC_PHONE_HUNGUP) && 635 (atomic_get(&phone->active_calls) == 0)) { 636 phone->state = IPC_PHONE_FREE; 637 phone->callee = NULL; 638 } 639 640 /* 641 * We might have had some IPC_PHONE_CONNECTING phones at the 642 * beginning of ipc_cleanup(). Depending on whether these were 643 * forgotten or answered, they will eventually enter the 644 * IPC_PHONE_FREE or IPC_PHONE_CONNECTED states, respectively. 645 * In the latter case, the other side may slam the open phones 646 * at any time, in which case we will get an IPC_PHONE_SLAMMED 647 * phone. 648 */ 649 if ((phone->state == IPC_PHONE_CONNECTED) || 650 (phone->state == IPC_PHONE_SLAMMED)) { 651 mutex_unlock(&phone->lock); 652 ipc_phone_hangup(phone); 653 /* 654 * Now there may be one extra active call, which needs 655 * to be forgotten. 656 */ 657 ipc_forget_all_active_calls(); 658 goto restart; 659 } 660 661 /* 662 * If the hangup succeeded, it has sent a HANGUP message, the 663 * IPC is now in HUNGUP state, we wait for the reply to come 664 */ 665 if (phone->state != IPC_PHONE_FREE) { 666 mutex_unlock(&phone->lock); 667 break; 668 } 669 670 mutex_unlock(&phone->lock); 671 } 672 673 /* Got into cleanup */ 674 if (i == IPC_MAX_PHONES) 675 return; 676 677 call = ipc_wait_for_call(&TASK->answerbox, SYNCH_NO_TIMEOUT, 678 SYNCH_FLAGS_NONE); 679 ASSERT(call->flags & (IPC_CALL_ANSWERED | IPC_CALL_NOTIF)); 680 ipc_call_free(call); 681 goto restart; 682 } 683 531 684 /** Clean up all IPC communication of the current task. 532 685 * … … 537 690 void ipc_cleanup(void) 538 691 { 692 /* 693 * Mark the answerbox as inactive. 694 * 695 * The main purpose for doing this is to prevent any pending callback 696 * connections from getting established beyond this point. 697 */ 698 irq_spinlock_lock(&TASK->answerbox.lock, true); 699 TASK->answerbox.active = false; 700 irq_spinlock_unlock(&TASK->answerbox.lock, true); 701 539 702 /* Disconnect all our phones ('ipc_phone_hangup') */ 540 size_t i; 541 for (i = 0; i < IPC_MAX_PHONES; i++) 703 for (size_t i = 0; i < IPC_MAX_PHONES; i++) 542 704 ipc_phone_hangup(&TASK->phones[i]); 543 705 … … 557 719 558 720 /* Answer all messages in 'calls' and 'dispatched_calls' queues */ 559 irq_spinlock_lock(&TASK->answerbox.lock, true); 560 ipc_cleanup_call_list(&TASK->answerbox.dispatched_calls); 561 ipc_cleanup_call_list(&TASK->answerbox.calls); 562 irq_spinlock_unlock(&TASK->answerbox.lock, true); 563 564 /* Wait for all answers to asynchronous calls to arrive */ 565 while (true) { 566 /* 567 * Go through all phones, until they are all FREE 568 * Locking is not needed, no one else should modify 569 * it when we are in cleanup 570 */ 571 for (i = 0; i < IPC_MAX_PHONES; i++) { 572 if (TASK->phones[i].state == IPC_PHONE_HUNGUP && 573 atomic_get(&TASK->phones[i].active_calls) == 0) { 574 TASK->phones[i].state = IPC_PHONE_FREE; 575 TASK->phones[i].callee = NULL; 576 } 577 578 /* 579 * Just for sure, we might have had some 580 * IPC_PHONE_CONNECTING phones 581 */ 582 if (TASK->phones[i].state == IPC_PHONE_CONNECTED) 583 ipc_phone_hangup(&TASK->phones[i]); 584 585 /* 586 * If the hangup succeeded, it has sent a HANGUP 587 * message, the IPC is now in HUNGUP state, we 588 * wait for the reply to come 589 */ 590 591 if (TASK->phones[i].state != IPC_PHONE_FREE) 592 break; 593 } 594 595 /* Got into cleanup */ 596 if (i == IPC_MAX_PHONES) 597 break; 598 599 call_t *call = ipc_wait_for_call(&TASK->answerbox, SYNCH_NO_TIMEOUT, 600 SYNCH_FLAGS_NONE); 601 ASSERT((call->flags & IPC_CALL_ANSWERED) || 602 (call->flags & IPC_CALL_NOTIF)); 603 604 ipc_call_free(call); 605 } 721 ipc_cleanup_call_list(&TASK->answerbox, 722 &TASK->answerbox.dispatched_calls); 723 ipc_cleanup_call_list(&TASK->answerbox, &TASK->answerbox.calls); 724 725 ipc_forget_all_active_calls(); 726 ipc_wait_for_all_answered_calls(); 606 727 } 607 728 … … 615 736 ipc_answerbox_slab = slab_cache_create("answerbox_t", 616 737 sizeof(answerbox_t), 0, NULL, NULL, 0); 738 } 739 740 741 static void ipc_print_call_list(list_t *list) 742 { 743 list_foreach(*list, cur) { 744 call_t *call = list_get_instance(cur, call_t, ab_link); 745 746 #ifdef __32_BITS__ 747 printf("%10p ", call); 748 #endif 749 750 #ifdef __64_BITS__ 751 printf("%18p ", call); 752 #endif 753 754 spinlock_lock(&call->forget_lock); 755 756 printf("%-8" PRIun " %-6" PRIun " %-6" PRIun " %-6" PRIun 757 " %-6" PRIun " %-6" PRIun " %-7x", 758 IPC_GET_IMETHOD(call->data), IPC_GET_ARG1(call->data), 759 IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), 760 IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), 761 call->flags); 762 763 if (call->forget) { 764 printf(" ? (call forgotten)\n"); 765 } else { 766 printf(" %" PRIu64 " (%s)\n", 767 call->sender->taskid, call->sender->name); 768 } 769 770 spinlock_unlock(&call->forget_lock); 771 } 617 772 } 618 773 … … 688 843 689 844 printf(" --- incomming calls ---\n"); 690 list_foreach(task->answerbox.calls, cur) { 691 call_t *call = list_get_instance(cur, call_t, link); 692 693 #ifdef __32_BITS__ 694 printf("%10p ", call); 695 #endif 696 697 #ifdef __64_BITS__ 698 printf("%18p ", call); 699 #endif 700 701 printf("%-8" PRIun " %-6" PRIun " %-6" PRIun " %-6" PRIun 702 " %-6" PRIun " %-6" PRIun " %-7x %" PRIu64 " (%s)\n", 703 IPC_GET_IMETHOD(call->data), IPC_GET_ARG1(call->data), 704 IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), 705 IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), 706 call->flags, call->sender->taskid, call->sender->name); 707 } 708 845 ipc_print_call_list(&task->answerbox.calls); 709 846 printf(" --- dispatched calls ---\n"); 710 list_foreach(task->answerbox.dispatched_calls, cur) { 711 call_t *call = list_get_instance(cur, call_t, link); 712 713 #ifdef __32_BITS__ 714 printf("%10p ", call); 715 #endif 716 717 #ifdef __64_BITS__ 718 printf("%18p ", call); 719 #endif 720 721 printf("%-8" PRIun " %-6" PRIun " %-6" PRIun " %-6" PRIun 722 " %-6" PRIun " %-6" PRIun " %-7x %" PRIu64 " (%s)\n", 723 IPC_GET_IMETHOD(call->data), IPC_GET_ARG1(call->data), 724 IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), 725 IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), 726 call->flags, call->sender->taskid, call->sender->name); 727 } 728 847 ipc_print_call_list(&task->answerbox.dispatched_calls); 729 848 printf(" --- incoming answers ---\n"); 730 list_foreach(task->answerbox.answers, cur) { 731 call_t *call = list_get_instance(cur, call_t, link); 732 733 #ifdef __32_BITS__ 734 printf("%10p ", call); 735 #endif 736 737 #ifdef __64_BITS__ 738 printf("%18p ", call); 739 #endif 740 741 printf("%-8" PRIun " %-6" PRIun " %-6" PRIun " %-6" PRIun 742 " %-6" PRIun " %-6" PRIun " %-7x %" PRIu64 " (%s)\n", 743 IPC_GET_IMETHOD(call->data), IPC_GET_ARG1(call->data), 744 IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), 745 IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), 746 call->flags, call->sender->taskid, call->sender->name); 747 } 849 ipc_print_call_list(&task->answerbox.answers); 748 850 749 851 irq_spinlock_unlock(&task->answerbox.lock, false); -
kernel/generic/src/ipc/ipcrsc.c
r3ffd4c3 r983cabe8 132 132 #include <ipc/ipcrsc.h> 133 133 #include <debug.h> 134 #include <abi/errno.h> 134 135 135 136 /** Find call_t * in call table according to callid. … … 151 152 152 153 list_foreach(TASK->answerbox.dispatched_calls, lst) { 153 call_t *call = list_get_instance(lst, call_t, link);154 call_t *call = list_get_instance(lst, call_t, ab_link); 154 155 if ((sysarg_t) call == callid) { 155 156 result = call; … … 160 161 irq_spinlock_unlock(&TASK->answerbox.lock, true); 161 162 return result; 163 } 164 165 /** Get phone from the current task by ID. 166 * 167 * @param phoneid Phone ID. 168 * @param phone Place to store pointer to phone. 169 * 170 * @return EOK on success, EINVAL if ID is invalid. 171 * 172 */ 173 int phone_get(sysarg_t phoneid, phone_t **phone) 174 { 175 if (phoneid >= IPC_MAX_PHONES) 176 return EINVAL; 177 178 *phone = &TASK->phones[phoneid]; 179 return EOK; 162 180 } 163 181 … … 223 241 * @param phoneid Phone handle to be connected. 224 242 * @param box Answerbox to which to connect the phone handle. 243 * @return True if the phone was connected, false otherwise. 225 244 * 226 245 * The procedure _enforces_ that the user first marks the phone … … 229 248 * 230 249 */ 231 voidphone_connect(int phoneid, answerbox_t *box)250 bool phone_connect(int phoneid, answerbox_t *box) 232 251 { 233 252 phone_t *phone = &TASK->phones[phoneid]; 234 253 235 254 ASSERT(phone->state == IPC_PHONE_CONNECTING); 236 ipc_phone_connect(phone, box);255 return ipc_phone_connect(phone, box); 237 256 } 238 257 -
kernel/generic/src/ipc/irq.c
r3ffd4c3 r983cabe8 510 510 { 511 511 irq_spinlock_lock(&irq->notif_cfg.answerbox->irq_lock, false); 512 list_append(&call-> link, &irq->notif_cfg.answerbox->irq_notifs);512 list_append(&call->ab_link, &irq->notif_cfg.answerbox->irq_notifs); 513 513 irq_spinlock_unlock(&irq->notif_cfg.answerbox->irq_lock, false); 514 514 -
kernel/generic/src/ipc/kbox.c
r3ffd4c3 r983cabe8 48 48 { 49 49 /* 50 * Not really needed, just to be consistent with the meaning of 51 * answerbox_t.active. 52 */ 53 irq_spinlock_lock(&TASK->kb.box.lock, true); 54 TASK->kb.box.active = false; 55 irq_spinlock_unlock(&TASK->kb.box.lock, true); 56 57 /* 50 58 * Only hold kb.cleanup_lock while setting kb.finished - 51 59 * this is enough. … … 88 96 89 97 /* Answer all messages in 'calls' and 'dispatched_calls' queues. */ 90 irq_spinlock_lock(&TASK->kb.box.lock, true); 91 ipc_cleanup_call_list(&TASK->kb.box.dispatched_calls); 92 ipc_cleanup_call_list(&TASK->kb.box.calls); 93 irq_spinlock_unlock(&TASK->kb.box.lock, true); 98 ipc_cleanup_call_list(&TASK->kb.box, &TASK->kb.box.dispatched_calls); 99 ipc_cleanup_call_list(&TASK->kb.box, &TASK->kb.box.calls); 94 100 } 95 101 … … 236 242 237 243 /* Connect the newly allocated phone to the kbox */ 238 ipc_phone_connect(&TASK->phones[newphid], &task->kb.box);244 (void) ipc_phone_connect(&TASK->phones[newphid], &task->kb.box); 239 245 240 246 if (task->kb.thread != NULL) { -
kernel/generic/src/ipc/sysipc.c
r3ffd4c3 r983cabe8 34 34 35 35 #include <arch.h> 36 #include <proc/task.h>37 #include <proc/thread.h>38 36 #include <errno.h> 39 37 #include <memstr.h> 40 #include <debug.h>41 38 #include <ipc/ipc.h> 42 39 #include <abi/ipc/methods.h> 43 40 #include <ipc/sysipc.h> 41 #include <ipc/sysipc_ops.h> 42 #include <ipc/sysipc_priv.h> 44 43 #include <ipc/irq.h> 45 44 #include <ipc/ipcrsc.h> … … 47 46 #include <ipc/kbox.h> 48 47 #include <synch/waitq.h> 49 #include <udebug/udebug_ipc.h>50 48 #include <arch/interrupt.h> 51 49 #include <syscall/copy.h> 52 50 #include <security/cap.h> 53 51 #include <console/console.h> 54 #include <mm/as.h>55 52 #include <print.h> 56 53 #include <macros.h> 57 54 58 /**59 * Maximum buffer size allowed for IPC_M_DATA_WRITE and IPC_M_DATA_READ60 * requests.61 */62 #define DATA_XFER_LIMIT (64 * 1024)63 64 55 #define STRUCT_TO_USPACE(dst, src) copy_to_uspace((dst), (src), sizeof(*(src))) 65 66 /** Get phone from the current task by ID.67 *68 * @param phoneid Phone ID.69 * @param phone Place to store pointer to phone.70 *71 * @return EOK on success, EINVAL if ID is invalid.72 *73 */74 static int phone_get(sysarg_t phoneid, phone_t **phone)75 {76 if (phoneid >= IPC_MAX_PHONES)77 return EINVAL;78 79 *phone = &TASK->phones[phoneid];80 return EOK;81 }82 56 83 57 /** Decide if the interface and method is a system method. … … 181 155 * @param olddata Saved data of the request. 182 156 * 183 * @return Return 0 on success or an error code. 184 * 185 */ 186 static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) 187 { 157 * @return Return EOK on success or a negative error code. 158 * 159 */ 160 int answer_preprocess(call_t *answer, ipc_data_t *olddata) 161 { 162 int rc = EOK; 163 sysipc_ops_t *ops; 164 165 spinlock_lock(&answer->forget_lock); 166 if (answer->forget) { 167 /* 168 * This is a forgotten call and answer->sender is not valid. 169 */ 170 spinlock_unlock(&answer->forget_lock); 171 172 ops = sysipc_ops_get(answer->request_method); 173 if (ops->answer_cleanup) 174 ops->answer_cleanup(answer, olddata); 175 176 return rc; 177 } else { 178 ASSERT(answer->active); 179 180 /* 181 * Mark the call as inactive to prevent _ipc_answer_free_call() 182 * from attempting to remove the call from the active list 183 * itself. 184 */ 185 answer->active = false; 186 187 /* 188 * Remove the call from the sender's active call list. 189 * We enforce this locking order so that any potential 190 * concurrently executing forget operation is forced to 191 * release its active_calls_lock and lose the race to 192 * forget this soon to be answered call. 193 */ 194 spinlock_lock(&answer->sender->active_calls_lock); 195 list_remove(&answer->ta_link); 196 spinlock_unlock(&answer->sender->active_calls_lock); 197 } 198 spinlock_unlock(&answer->forget_lock); 199 188 200 if ((native_t) IPC_GET_RETVAL(answer->data) == EHANGUP) { 189 /* In case of forward, hangup the forwared phone, 190 * not the originator 191 */ 192 mutex_lock(&answer->data.phone->lock); 193 irq_spinlock_lock(&TASK->answerbox.lock, true); 194 if (answer->data.phone->state == IPC_PHONE_CONNECTED) { 195 list_remove(&answer->data.phone->link); 196 answer->data.phone->state = IPC_PHONE_SLAMMED; 201 phone_t *phone = answer->caller_phone; 202 mutex_lock(&phone->lock); 203 if (phone->state == IPC_PHONE_CONNECTED) { 204 irq_spinlock_lock(&phone->callee->lock, true); 205 list_remove(&phone->link); 206 phone->state = IPC_PHONE_SLAMMED; 207 irq_spinlock_unlock(&phone->callee->lock, true); 197 208 } 198 irq_spinlock_unlock(&TASK->answerbox.lock, true); 199 mutex_unlock(&answer->data.phone->lock); 209 mutex_unlock(&phone->lock); 200 210 } 201 211 202 212 if (!olddata) 203 return 0; 204 205 if (IPC_GET_IMETHOD(*olddata) == IPC_M_CONNECTION_CLONE) { 206 int phoneid = IPC_GET_ARG1(*olddata); 207 phone_t *phone = &TASK->phones[phoneid]; 208 209 if (IPC_GET_RETVAL(answer->data) != EOK) { 210 /* 211 * The recipient of the cloned phone rejected the offer. 212 * In this case, the connection was established at the 213 * request time and therefore we need to slam the phone. 214 * We don't merely hangup as that would result in 215 * sending IPC_M_HUNGUP to the third party on the 216 * other side of the cloned phone. 217 */ 218 mutex_lock(&phone->lock); 219 if (phone->state == IPC_PHONE_CONNECTED) { 220 irq_spinlock_lock(&phone->callee->lock, true); 221 list_remove(&phone->link); 222 phone->state = IPC_PHONE_SLAMMED; 223 irq_spinlock_unlock(&phone->callee->lock, true); 224 } 225 mutex_unlock(&phone->lock); 226 } 227 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_CLONE_ESTABLISH) { 228 phone_t *phone = (phone_t *) IPC_GET_ARG5(*olddata); 229 230 if (IPC_GET_RETVAL(answer->data) != EOK) { 231 /* 232 * The other party on the cloned phoned rejected our 233 * request for connection on the protocol level. 234 * We need to break the connection without sending 235 * IPC_M_HUNGUP back. 236 */ 237 mutex_lock(&phone->lock); 238 if (phone->state == IPC_PHONE_CONNECTED) { 239 irq_spinlock_lock(&phone->callee->lock, true); 240 list_remove(&phone->link); 241 phone->state = IPC_PHONE_SLAMMED; 242 irq_spinlock_unlock(&phone->callee->lock, true); 243 } 244 mutex_unlock(&phone->lock); 245 } 246 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_CONNECT_TO_ME) { 247 int phoneid = IPC_GET_ARG5(*olddata); 248 249 if (IPC_GET_RETVAL(answer->data) != EOK) { 250 /* The connection was not accepted */ 251 phone_dealloc(phoneid); 252 } else { 253 /* The connection was accepted */ 254 phone_connect(phoneid, &answer->sender->answerbox); 255 /* Set 'phone hash' as arg5 of response */ 256 IPC_SET_ARG5(answer->data, 257 (sysarg_t) &TASK->phones[phoneid]); 258 } 259 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_CONNECT_ME_TO) { 260 /* If the users accepted call, connect */ 261 if (IPC_GET_RETVAL(answer->data) == EOK) { 262 ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), 263 &TASK->answerbox); 264 } 265 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_SHARE_OUT) { 266 if (!IPC_GET_RETVAL(answer->data)) { 267 /* Accepted, handle as_area receipt */ 268 269 irq_spinlock_lock(&answer->sender->lock, true); 270 as_t *as = answer->sender->as; 271 irq_spinlock_unlock(&answer->sender->lock, true); 272 273 uintptr_t dst_base = (uintptr_t) -1; 274 int rc = as_area_share(as, IPC_GET_ARG1(*olddata), 275 IPC_GET_ARG2(*olddata), AS, IPC_GET_ARG3(*olddata), 276 &dst_base, IPC_GET_ARG1(answer->data)); 277 278 if (rc == EOK) 279 rc = copy_to_uspace((void *) IPC_GET_ARG2(answer->data), 280 &dst_base, sizeof(dst_base)); 281 282 IPC_SET_RETVAL(answer->data, rc); 283 return rc; 284 } 285 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_SHARE_IN) { 286 if (!IPC_GET_RETVAL(answer->data)) { 287 irq_spinlock_lock(&answer->sender->lock, true); 288 as_t *as = answer->sender->as; 289 irq_spinlock_unlock(&answer->sender->lock, true); 290 291 uintptr_t dst_base = (uintptr_t) -1; 292 int rc = as_area_share(AS, IPC_GET_ARG1(answer->data), 293 IPC_GET_ARG1(*olddata), as, IPC_GET_ARG2(answer->data), 294 &dst_base, IPC_GET_ARG3(answer->data)); 295 IPC_SET_ARG4(answer->data, dst_base); 296 IPC_SET_RETVAL(answer->data, rc); 297 } 298 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_DATA_READ) { 299 ASSERT(!answer->buffer); 300 if (!IPC_GET_RETVAL(answer->data)) { 301 /* The recipient agreed to send data. */ 302 uintptr_t src = IPC_GET_ARG1(answer->data); 303 uintptr_t dst = IPC_GET_ARG1(*olddata); 304 size_t max_size = IPC_GET_ARG2(*olddata); 305 size_t size = IPC_GET_ARG2(answer->data); 306 if (size && size <= max_size) { 307 /* 308 * Copy the destination VA so that this piece of 309 * information is not lost. 310 */ 311 IPC_SET_ARG1(answer->data, dst); 312 313 answer->buffer = malloc(size, 0); 314 int rc = copy_from_uspace(answer->buffer, 315 (void *) src, size); 316 if (rc) { 317 IPC_SET_RETVAL(answer->data, rc); 318 free(answer->buffer); 319 answer->buffer = NULL; 320 } 321 } else if (!size) { 322 IPC_SET_RETVAL(answer->data, EOK); 323 } else { 324 IPC_SET_RETVAL(answer->data, ELIMIT); 325 } 326 } 327 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_DATA_WRITE) { 328 ASSERT(answer->buffer); 329 if (!IPC_GET_RETVAL(answer->data)) { 330 /* The recipient agreed to receive data. */ 331 uintptr_t dst = (uintptr_t)IPC_GET_ARG1(answer->data); 332 size_t size = (size_t)IPC_GET_ARG2(answer->data); 333 size_t max_size = (size_t)IPC_GET_ARG2(*olddata); 334 335 if (size <= max_size) { 336 int rc = copy_to_uspace((void *) dst, 337 answer->buffer, size); 338 if (rc) 339 IPC_SET_RETVAL(answer->data, rc); 340 } else { 341 IPC_SET_RETVAL(answer->data, ELIMIT); 342 } 343 } 344 free(answer->buffer); 345 answer->buffer = NULL; 346 } else if (IPC_GET_IMETHOD(*olddata) == IPC_M_STATE_CHANGE_AUTHORIZE) { 347 if (!IPC_GET_RETVAL(answer->data)) { 348 /* The recipient authorized the change of state. */ 349 phone_t *recipient_phone; 350 task_t *other_task_s; 351 task_t *other_task_r; 352 int rc; 353 354 rc = phone_get(IPC_GET_ARG1(answer->data), 355 &recipient_phone); 356 if (rc != EOK) { 357 IPC_SET_RETVAL(answer->data, ENOENT); 358 return ENOENT; 359 } 360 361 mutex_lock(&recipient_phone->lock); 362 if (recipient_phone->state != IPC_PHONE_CONNECTED) { 363 mutex_unlock(&recipient_phone->lock); 364 IPC_SET_RETVAL(answer->data, EINVAL); 365 return EINVAL; 366 } 367 368 other_task_r = recipient_phone->callee->task; 369 other_task_s = (task_t *) IPC_GET_ARG5(*olddata); 370 371 /* 372 * See if both the sender and the recipient meant the 373 * same third party task. 374 */ 375 if (other_task_r != other_task_s) { 376 IPC_SET_RETVAL(answer->data, EINVAL); 377 rc = EINVAL; 378 } else { 379 rc = event_task_notify_5(other_task_r, 380 EVENT_TASK_STATE_CHANGE, false, 381 IPC_GET_ARG1(*olddata), 382 IPC_GET_ARG2(*olddata), 383 IPC_GET_ARG3(*olddata), 384 LOWER32(olddata->task_id), 385 UPPER32(olddata->task_id)); 386 IPC_SET_RETVAL(answer->data, rc); 387 } 388 389 mutex_unlock(&recipient_phone->lock); 390 return rc; 391 } 392 } 393 394 return 0; 395 } 396 397 static void phones_lock(phone_t *p1, phone_t *p2) 398 { 399 if (p1 < p2) { 400 mutex_lock(&p1->lock); 401 mutex_lock(&p2->lock); 402 } else if (p1 > p2) { 403 mutex_lock(&p2->lock); 404 mutex_lock(&p1->lock); 405 } else 406 mutex_lock(&p1->lock); 407 } 408 409 static void phones_unlock(phone_t *p1, phone_t *p2) 410 { 411 mutex_unlock(&p1->lock); 412 if (p1 != p2) 413 mutex_unlock(&p2->lock); 213 return rc; 214 215 ops = sysipc_ops_get(answer->request_method); 216 if (ops->answer_preprocess) 217 rc = ops->answer_preprocess(answer, olddata); 218 219 return rc; 414 220 } 415 221 … … 424 230 static int request_preprocess(call_t *call, phone_t *phone) 425 231 { 426 switch (IPC_GET_IMETHOD(call->data)) { 427 case IPC_M_CONNECTION_CLONE: { 428 phone_t *cloned_phone; 429 if (phone_get(IPC_GET_ARG1(call->data), &cloned_phone) != EOK) 430 return ENOENT; 431 432 phones_lock(cloned_phone, phone); 433 434 if ((cloned_phone->state != IPC_PHONE_CONNECTED) || 435 phone->state != IPC_PHONE_CONNECTED) { 436 phones_unlock(cloned_phone, phone); 437 return EINVAL; 438 } 439 440 /* 441 * We can be pretty sure now that both tasks exist and we are 442 * connected to them. As we continue to hold the phone locks, 443 * we are effectively preventing them from finishing their 444 * potential cleanup. 445 * 446 */ 447 int newphid = phone_alloc(phone->callee->task); 448 if (newphid < 0) { 449 phones_unlock(cloned_phone, phone); 450 return ELIMIT; 451 } 452 453 ipc_phone_connect(&phone->callee->task->phones[newphid], 454 cloned_phone->callee); 455 phones_unlock(cloned_phone, phone); 456 457 /* Set the new phone for the callee. */ 458 IPC_SET_ARG1(call->data, newphid); 459 break; 460 } 461 case IPC_M_CLONE_ESTABLISH: 462 IPC_SET_ARG5(call->data, (sysarg_t) phone); 463 break; 464 case IPC_M_CONNECT_ME_TO: { 465 int newphid = phone_alloc(TASK); 466 if (newphid < 0) 467 return ELIMIT; 468 469 /* Set arg5 for server */ 470 IPC_SET_ARG5(call->data, (sysarg_t) &TASK->phones[newphid]); 471 call->flags |= IPC_CALL_CONN_ME_TO; 472 call->priv = newphid; 473 break; 474 } 475 case IPC_M_SHARE_OUT: { 476 size_t size = as_area_get_size(IPC_GET_ARG1(call->data)); 477 if (!size) 478 return EPERM; 479 480 IPC_SET_ARG2(call->data, size); 481 break; 482 } 483 case IPC_M_DATA_READ: { 484 size_t size = IPC_GET_ARG2(call->data); 485 if (size > DATA_XFER_LIMIT) { 486 int flags = IPC_GET_ARG3(call->data); 487 if (flags & IPC_XF_RESTRICT) 488 IPC_SET_ARG2(call->data, DATA_XFER_LIMIT); 489 else 490 return ELIMIT; 491 } 492 break; 493 } 494 case IPC_M_DATA_WRITE: { 495 uintptr_t src = IPC_GET_ARG1(call->data); 496 size_t size = IPC_GET_ARG2(call->data); 497 498 if (size > DATA_XFER_LIMIT) { 499 int flags = IPC_GET_ARG3(call->data); 500 if (flags & IPC_XF_RESTRICT) { 501 size = DATA_XFER_LIMIT; 502 IPC_SET_ARG2(call->data, size); 503 } else 504 return ELIMIT; 505 } 506 507 call->buffer = (uint8_t *) malloc(size, 0); 508 int rc = copy_from_uspace(call->buffer, (void *) src, size); 509 if (rc != 0) { 510 free(call->buffer); 511 return rc; 512 } 513 514 break; 515 } 516 case IPC_M_STATE_CHANGE_AUTHORIZE: { 517 phone_t *sender_phone; 518 task_t *other_task_s; 519 520 if (phone_get(IPC_GET_ARG5(call->data), &sender_phone) != EOK) 521 return ENOENT; 522 523 mutex_lock(&sender_phone->lock); 524 if (sender_phone->state != IPC_PHONE_CONNECTED) { 525 mutex_unlock(&sender_phone->lock); 526 return EINVAL; 527 } 528 529 other_task_s = sender_phone->callee->task; 530 531 mutex_unlock(&sender_phone->lock); 532 533 /* Remember the third party task hash. */ 534 IPC_SET_ARG5(call->data, (sysarg_t) other_task_s); 535 break; 536 } 537 #ifdef CONFIG_UDEBUG 538 case IPC_M_DEBUG: 539 return udebug_request_preprocess(call, phone); 540 #endif 541 default: 542 break; 543 } 544 545 return 0; 232 int rc = EOK; 233 234 call->request_method = IPC_GET_IMETHOD(call->data); 235 236 sysipc_ops_t *ops = sysipc_ops_get(call->request_method); 237 if (ops->request_preprocess) 238 rc = ops->request_preprocess(call, phone); 239 240 return rc; 546 241 } 547 242 … … 561 256 IPC_SET_RETVAL(call->data, EFORWARD); 562 257 563 if (call->flags & IPC_CALL_CONN_ME_TO) { 564 if (IPC_GET_RETVAL(call->data)) 565 phone_dealloc(call->priv); 566 else 567 IPC_SET_ARG5(call->data, call->priv); 568 } 569 570 if (call->buffer) { 571 /* 572 * This must be an affirmative answer to IPC_M_DATA_READ 573 * or IPC_M_DEBUG/UDEBUG_M_MEM_READ... 574 * 575 */ 576 uintptr_t dst = IPC_GET_ARG1(call->data); 577 size_t size = IPC_GET_ARG2(call->data); 578 int rc = copy_to_uspace((void *) dst, call->buffer, size); 579 if (rc) 580 IPC_SET_RETVAL(call->data, rc); 581 free(call->buffer); 582 call->buffer = NULL; 583 } 584 } 258 sysipc_ops_t *ops = sysipc_ops_get(call->request_method); 259 if (ops->answer_process) 260 (void) ops->answer_process(call); 261 } 262 585 263 586 264 /** Do basic kernel processing of received call request. … … 595 273 static int process_request(answerbox_t *box, call_t *call) 596 274 { 597 if (IPC_GET_IMETHOD(call->data) == IPC_M_CONNECT_TO_ME) { 598 int phoneid = phone_alloc(TASK); 599 if (phoneid < 0) { /* Failed to allocate phone */ 600 IPC_SET_RETVAL(call->data, ELIMIT); 601 ipc_answer(box, call); 602 return -1; 603 } 604 605 IPC_SET_ARG5(call->data, phoneid); 606 } 607 608 switch (IPC_GET_IMETHOD(call->data)) { 609 case IPC_M_DEBUG: 610 return -1; 611 default: 612 break; 613 } 614 615 return 0; 275 int rc = EOK; 276 277 sysipc_ops_t *ops = sysipc_ops_get(call->request_method); 278 if (ops->request_process) 279 rc = ops->request_process(call, box); 280 281 return rc; 616 282 } 617 283 … … 745 411 { 746 412 call_t *call = get_call(callid); 413 phone_t *phone; 414 bool need_old = answer_need_old(call); 415 bool after_forward = false; 416 ipc_data_t old; 417 int rc; 418 747 419 if (!call) 748 420 return ENOENT; 749 421 422 if (need_old) 423 old = call->data; 424 425 if (phone_get(phoneid, &phone) != EOK) { 426 rc = ENOENT; 427 goto error; 428 } 429 430 if (!method_is_forwardable(IPC_GET_IMETHOD(call->data))) { 431 rc = EPERM; 432 goto error; 433 } 434 750 435 call->flags |= IPC_CALL_FORWARDED; 751 752 phone_t *phone;753 if (phone_get(phoneid, &phone) != EOK) {754 IPC_SET_RETVAL(call->data, EFORWARD);755 ipc_answer(&TASK->answerbox, call);756 return ENOENT;757 }758 759 if (!method_is_forwardable(IPC_GET_IMETHOD(call->data))) {760 IPC_SET_RETVAL(call->data, EFORWARD);761 ipc_answer(&TASK->answerbox, call);762 return EPERM;763 }764 436 765 437 /* … … 797 469 } 798 470 799 return ipc_forward(call, phone, &TASK->answerbox, mode); 471 rc = ipc_forward(call, phone, &TASK->answerbox, mode); 472 if (rc != EOK) { 473 after_forward = true; 474 goto error; 475 } 476 477 return EOK; 478 479 error: 480 IPC_SET_RETVAL(call->data, EFORWARD); 481 (void) answer_preprocess(call, need_old ? &old : NULL); 482 if (after_forward) 483 _ipc_answer_free_call(call, false); 484 else 485 ipc_answer(&TASK->answerbox, call); 486 487 return rc; 800 488 } 801 489 -
kernel/generic/src/proc/task.c
r3ffd4c3 r983cabe8 162 162 for (i = 0; i < IPC_MAX_PHONES; i++) 163 163 ipc_phone_init(&task->phones[i]); 164 165 spinlock_initialize(&task->active_calls_lock, "active_calls_lock"); 166 list_initialize(&task->active_calls); 164 167 165 168 #ifdef CONFIG_UDEBUG … … 203 206 event_task_init(task); 204 207 208 task->answerbox.active = true; 209 205 210 #ifdef CONFIG_UDEBUG 206 211 /* Init debugging stuff */ … … 208 213 209 214 /* Init kbox stuff */ 215 task->kb.box.active = true; 210 216 task->kb.finished = false; 211 217 #endif … … 213 219 if ((ipc_phone_0) && 214 220 (container_check(ipc_phone_0->task->container, task->container))) 215 ipc_phone_connect(&task->phones[0], ipc_phone_0);221 (void) ipc_phone_connect(&task->phones[0], ipc_phone_0); 216 222 217 223 btree_create(&task->futexes);
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