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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 | // // vmremaptest.c // // Created by Lionel Desai on 9/16/19. // Copyright © 2019 Apple. All rights reserved. // #include "mach_vm_tests.h" #include <sys/sysctl.h> #define TESTSZ (140 * 1024 * 1024ULL) void mach_vm_client(mach_port_t port) { mach_port_t memport = MACH_PORT_NULL; mach_vm_address_t src = 0, dest = 0, tmp = 0; mach_vm_size_t size = 0; vm_prot_t cur_prot, max_prot; mach_port_name_t lport = 0; kern_return_t ret = 0; boolean_t copy = FALSE; mach_vm_offset_t misoffset = 0; mach_msg_type_number_t countp; mach_msg_size_t messageSize = 0; ipc_message_t *message = NULL; char buffer[PATH_MAX]; ret = proc_pidpath(getpid(), buffer, sizeof(buffer)); assert(ret != -1); messageSize = sizeof(ipc_message_t) + sizeof(mach_msg_trailer_t) + 64; message = (ipc_message_t *)calloc(1, messageSize); message->header.msgh_bits = MACH_MSGH_BITS_ZERO; message->header.msgh_size = messageSize; message->header.msgh_remote_port = MACH_PORT_NULL; message->header.msgh_local_port = port; while (1) { /* Awaiting the pid/src. addr/size from the server so we know what to remap from where */ ret = mach_msg(&message->header, MACH_RCV_MSG | MACH_RCV_LARGE, 0, messageSize, port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (ret == KERN_SUCCESS) { if (debug) { T_LOG("CLIENT: received info from server... 0x%llx, %lld, 0x%llx, %d - %d\n", message->address, message->size, message->misoffset, message->vm_op, message->copy); } switch (message->vm_op) { case VM_OP_REMAP: ret = task_for_pid(mach_task_self(), (pid_t) message->pid, &lport); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "task_for_pid"); copy = message->copy; size = message->size; src = message->address; misoffset = 0; ret = mach_vm_allocate(mach_task_self(), &tmp, size + 16384, VM_FLAGS_ANYWHERE); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "mach_vm_allocate"); mach_vm_deallocate(mach_task_self(), tmp, size + 16384); dest = tmp + 4096; ret = mach_vm_remap(mach_task_self(), &dest, size, 0, VM_FLAGS_ANYWHERE | VM_FLAGS_RETURN_DATA_ADDR, lport, src, copy, &cur_prot, &max_prot, VM_INHERIT_NONE); if (ret) { char dstval[64]; memcpy(dstval, (void*) dest, 64); T_LOG("CLIENT: mach_vm_remap FAILED: %s -- src 0x%llx, dest 0x%llx (%s)\n", mach_error_string(ret), src, dest, dstval); T_FAIL("CLIENT: mach_vm_remap FAILED"); } memcpy(message->value, (void*)dest, 64); break; case VM_OP_READ_OVERWRITE: ret = task_for_pid(mach_task_self(), (pid_t) message->pid, &lport); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "task_for_pid"); size = message->size; src = message->address; misoffset = 0; mach_vm_size_t dest_size = 0; ret = mach_vm_allocate(mach_task_self(), &tmp, size + 16384, VM_FLAGS_ANYWHERE); assert(KERN_SUCCESS == ret); dest = tmp + 4096; ret = mach_vm_read_overwrite(lport, src, size, dest, &dest_size); if (ret) { char dstval[64]; memcpy(dstval, (void*) dest, 64); T_LOG("CLIENT: mach_vm_read_overwrite FAILED: %s -- src 0x%llx, dest 0x%llx (%s)\n", mach_error_string(ret), src, dest, dstval); T_FAIL("CLIENT: mach_vm_read_overwrite FAILED"); } memcpy(message->value, (void*)dest, 64); break; case VM_OP_READ: ret = task_for_pid(mach_task_self(), (pid_t) message->pid, &lport); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "task_for_pid"); size = message->size; src = message->address; misoffset = 0; ret = mach_vm_read(lport, src, size, (vm_offset_t*)&dest, &countp); if (ret) { char dstval[64]; memcpy(dstval, (void*) dest, 64); T_LOG("CLIENT: mach_vm_read FAILED: %s -- src 0x%llx, dest 0x%llx (%s)\n", mach_error_string(ret), src, dest, dstval); T_FAIL("CLIENT: mach_vm_read FAILED"); exit(1); } memcpy(message->value, (void*)dest, 64); break; #if 0 case VM_OP_WRITE: ret = task_for_pid(mach_task_self(), (pid_t) message->pid, &lport); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "task_for_pid"); size = message->size; src = message->address; misoffset = 0; ret = mach_vm_write(lport, src, dest, countp); if (ret) { char dstval[64]; memcpy(dstval, (void*) dest, 64); T_LOG("CLIENT: mach_vm_write FAILED: %s -- src 0x%llx, dest 0x%llx (%s)\n", mach_error_string(ret), src, dest, dstval); T_FAIL("CLIENT: mach_vm_write FAILED"); } memcpy(message->value, (void*)dest, 64); break; #endif case VM_OP_MEMENTRY: assert(message->body.msgh_descriptor_count == 1); dest = 0; size = message->size; memport = message->port_descriptor.name; copy = message->copy; if (copy) { misoffset = 0; } else { misoffset = message->misoffset; } cur_prot = max_prot = VM_PROT_READ; #if 0 /* This + VM_FLAGS_FIXED in mach_vm_map() will return KERN_INVALID_ARG expectedly */ ret = mach_vm_allocate(mach_task_self(), &tmp, size + 16384, VM_FLAGS_ANYWHERE); dest = tmp + 4095; mach_vm_deallocate(mach_task_self(), tmp, size + 16384); #endif ret = mach_vm_map(mach_task_self(), &dest, size, 0 /*mask*/, VM_FLAGS_ANYWHERE | VM_FLAGS_RETURN_DATA_ADDR, memport, 0 /*offset*/, copy, cur_prot, max_prot, VM_INHERIT_NONE); if (ret) { T_LOG("CLIENT: mach_vm_map FAILED: %s -- port 0x%x\n", mach_error_string(ret), memport); T_FAIL("CLIENT: mach_vm_map FAILED"); } memcpy(message->value, (void*)(dest + misoffset), 64); break; case VM_OP_UNMAP: assert(dest); ret = mach_vm_deallocate(mach_task_self(), dest, size); if (ret) { T_LOG("CLIENT: mach_vm_deallocate FAILED: %s -- dest 0x%llx, size 0x%llx\n", mach_error_string(ret), dest, size); T_FAIL("CLIENT: mach_vm_deallocate FAILED"); } /* No message to send here */ continue; case VM_OP_NONE: memcpy(message->value, (void*) (dest + misoffset), 64); break; case VM_OP_EXIT: if (debug) { T_LOG("CLIENT EXITING ****** \n"); } return; case VM_OP_EXIT_ERROR: if (debug) { T_LOG("CLIENT EXITING WITH ERROR****** \n"); T_FAIL("Revieved VM_OP_EXIT_ERROR"); } return; default: break; } char dstval[64]; memcpy(dstval, (void*) message->value, 64); dstval[63] = '\0'; if (debug) { T_LOG("CLIENT: dest 0x%llx -> 0x%llx (0x%llx), *dest %s\n", dest, dest + misoffset, misoffset, dstval); /*memcpy(dstval, (void*) (dest + misoffset), 64); * dstval[63]='\0'; * T_LOG("*dest %s\n", dstval);*/ } message->header.msgh_local_port = MACH_PORT_NULL; ret = mach_msg(&message->header, MACH_SEND_MSG, message->header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "CLIENT: mach_msg_send FAILED"); } else { T_QUIET; T_ASSERT_MACH_SUCCESS(ret, "CLIENT: mach_msg_rcv FAILED"); } } } void mach_server_make_memory_entry(mach_port_t replyPort) { mach_vm_address_t src = 0, lsrc = 0; mach_vm_size_t size = TESTSZ; memory_object_size_t memsz = 0; kern_return_t kr; boolean_t modified_in_server = FALSE, perm_changed = FALSE; ipc_message_t message; ipc_message_t *reply = NULL; char src_val[64], dst_val[64]; mach_msg_size_t replySize = 0; void *buffer = NULL; int flags = 0; mach_port_t memport = 0; int mementry_pass_idx = 0; mach_vm_offset_t misoffset = 0; if (debug) { T_LOG("\n*************** make_memory_entry_test START ***************\n"); } if (mach_server_data_setup(&buffer) != 0) { server_error_out(replyPort); } if (buffer == NULL) { mach_server_data_cleanup(NULL, 0, 0); exit(0); } replySize = sizeof(ipc_message_t) + sizeof(mach_msg_trailer_t) + 64; reply = calloc(1, replySize); test_different_mementry_mode: /* create message to send over rights/address/pid/size */ mach_server_construct_header(&message, replyPort); /* allocation that we plan to remap in the client */ mach_server_create_allocation(&src, size, buffer); memsz = 8191; lsrc = src + 94095; int pgmask = (getpagesize() - 1); misoffset = 94095 - (94095 & ~pgmask); if (mementry_pass_idx < 2) { if (mementry_pass_idx == 0) { flags = VM_PROT_DEFAULT | MAP_MEM_VM_COPY | MAP_MEM_USE_DATA_ADDR; T_LOG("mach_make_memory_entry VM_COPY | USE_DATA_ADDR test..."); } else { flags = VM_PROT_READ | MAP_MEM_VM_SHARE; T_LOG("mach_make_memory_entry VM_SHARE test..."); } kr = mach_vm_protect(mach_task_self(), (mach_vm_address_t) lsrc, (mach_vm_size_t)getpagesize(), FALSE, VM_PROT_READ); assert(kr == KERN_SUCCESS); perm_changed = TRUE; } else { flags = VM_PROT_DEFAULT; perm_changed = FALSE; T_LOG("mach_make_memory_entry DEFAULT test..."); } kr = mach_make_memory_entry_64(mach_task_self(), &memsz, lsrc, flags, &memport, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: mach_make_memory_entry_64 try (%d) failed in Client: (%d) %s\n", mementry_pass_idx + 1, kr, mach_error_string(kr)); server_error_out(replyPort); } mach_server_contruct_payload(&message, lsrc, memport, memsz, misoffset, ((flags & MAP_MEM_VM_COPY) == MAP_MEM_VM_COPY) /*copy*/, VM_OP_MEMENTRY); memcpy(src_val, (void*) lsrc, 64); src_val[63] = '\0'; check_again: /* Sending over pid/src address/size */ kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } /* Ack from client that it worked */ bzero(reply, replySize); kr = mach_msg(&reply->header, MACH_RCV_MSG, 0, replySize, replyPort, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to get reply from client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } memcpy(dst_val, &reply->value, 64); dst_val[63] = '\0'; if (modified_in_server == FALSE) { if (strncmp(src_val, dst_val, 64)) { T_LOG("FAILED\n"); T_LOG("(%d) Pre modification mach_make_memory_entry() FAILED: copy(%d) src_val: %s dest_val: %s\n", mementry_pass_idx + 1, message.copy, src_val, dst_val); server_error_out(replyPort); } } else { if (message.copy == TRUE) { if (strncmp(src_val, dst_val, 64) == 0) { T_LOG("FAILED\n"); T_LOG("(%d) Data mismatch with Copy: %d src_val: %s dest_val: %s\n", mementry_pass_idx + 1, message.copy, src_val, dst_val); server_error_out(replyPort); } } else { if (strncmp(src_val, dst_val, 64)) { T_LOG("FAILED\n"); T_LOG("(%d) Data mismatch with Copy: %d src_val: %s dest_val: %s\n", mementry_pass_idx + 1, message.copy, src_val, dst_val); server_error_out(replyPort); } } } if (modified_in_server == FALSE) { /* Now we change our data that has been mapped elsewhere */ if (perm_changed) { kr = mach_vm_protect(mach_task_self(), (mach_vm_address_t) lsrc, (mach_vm_size_t)getpagesize(), FALSE, VM_PROT_READ | VM_PROT_WRITE); assert(kr == KERN_SUCCESS); } memcpy((void*) lsrc, "THIS IS DIFFERENT -- BUT WE DON'T know if that's expecTED", 64); if (perm_changed) { kr = mach_vm_protect(mach_task_self(), (mach_vm_address_t) lsrc, (mach_vm_size_t)getpagesize(), FALSE, VM_PROT_READ); assert(kr == KERN_SUCCESS); } memcpy(src_val, (void*) lsrc, 64); src_val[63] = '\0'; modified_in_server = TRUE; message.vm_op = VM_OP_NONE; /* Check to see if the data in the other process is as expected */ goto check_again; } if (mementry_pass_idx < 2) { /* Next remap mode...so ask the other process to unmap the older mapping. */ message.vm_op = VM_OP_UNMAP; kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } mach_port_deallocate(mach_task_self(), memport); memport = MACH_PORT_NULL; mach_vm_deallocate(mach_task_self(), src, size); T_LOG("PASSED\n"); mementry_pass_idx++; modified_in_server = FALSE; goto test_different_mementry_mode; } T_LOG("PASSED\n"); /* Unmap old mapping in the other process. */ message.vm_op = VM_OP_UNMAP; kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } free(reply); reply = NULL; mach_port_deallocate(mach_task_self(), memport); memport = MACH_PORT_NULL; mach_server_data_cleanup(buffer, src, size); buffer = NULL; if (debug) { T_LOG("*************** mach_make_memory_entry_test END ***************\n"); } } void mach_server_read(mach_port_t replyPort, int op) { mach_vm_address_t src; mach_vm_size_t size = TESTSZ; kern_return_t kr; boolean_t modified_in_server = FALSE; ipc_message_t message; char src_val[64], dst_val[64]; mach_msg_size_t replySize = 0; ipc_message_t *reply = NULL; void *buffer = NULL; if (debug) { T_LOG("\n*************** vm_read / write / overwrite_test START ***************\n"); } { char opname[16]; if (op == VM_OP_READ) { strlcpy(opname, "read", 5); } if (op == VM_OP_WRITE) { strlcpy(opname, "write", 6); } if (op == VM_OP_READ_OVERWRITE) { strlcpy(opname, "read_overwrite", 15); } T_LOG("vm_%s test...", opname); } if (mach_server_data_setup(&buffer) != 0) { server_error_out(replyPort); } if (buffer == NULL) { mach_server_data_cleanup(NULL, 0, 0); exit(0); } replySize = sizeof(ipc_message_t) + sizeof(mach_msg_trailer_t) + 64; reply = calloc(1, replySize); /* create message to send over rights/address/pid/size */ mach_server_construct_header(&message, replyPort); /* allocation that we plan to remap in the client */ mach_server_create_allocation(&src, size, buffer); mach_server_contruct_payload(&message, src, MACH_PORT_NULL /* port */, size, 0, TRUE /*copy*/, op); if (debug) { T_LOG("server COPY: Sending 0x%llx, %d, 0x%llx\n", message.address, getpid(), message.size); } memcpy(src_val, (void*)message.address, 64); check_again: /* Sending over pid/src address/size */ kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } /* Ack from client that it worked */ bzero(reply, replySize); kr = mach_msg(&reply->header, MACH_RCV_MSG, 0, replySize, replyPort, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to get reply from client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } memcpy(dst_val, &reply->value, 64); if (modified_in_server == FALSE) { if (strncmp(src_val, dst_val, 64)) { T_LOG("Pre modification (op: %d) FAILED: src_val: %s dest_val: %s\n", op, src_val, dst_val); server_error_out(replyPort); } } else { if (strncmp(src_val, dst_val, 64) == 0) { T_LOG("Data mismatch (op:%d) with Copy: %d src_val: %s dest_val: %s\n", op, message.copy, src_val, dst_val); server_error_out(replyPort); } } if (modified_in_server == FALSE) { /* Now we change our data that has been mapped elsewhere */ memcpy((void*)message.address, "THIS IS DIFFERENT -- BUT WE DON'T know if that's expecTED", 64); memcpy(src_val, (void*)message.address, 64); modified_in_server = TRUE; message.vm_op = VM_OP_NONE; /* Check to see if the data in the other process is as expected */ goto check_again; } /* Unmap old mapping in the other process. */ message.vm_op = VM_OP_UNMAP; kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } free(reply); reply = NULL; mach_server_data_cleanup(buffer, src, size); buffer = NULL; if (debug) { T_LOG("*************** vm_read_test END ***************\n"); } T_LOG("PASSED\n"); } void mach_server_remap(mach_port_t replyPort) { mach_vm_address_t src = 0, lsrc = 0; mach_vm_size_t size = TESTSZ; kern_return_t kr; int remap_copy_pass_idx = 0; boolean_t modified_in_server = FALSE; void *buffer; ipc_message_t message; char src_val[64], dst_val[64]; mach_msg_size_t replySize = 0; ipc_message_t *reply = NULL; if (debug) { T_LOG("\n*************** vm_remap_test START ***************\n"); } if (mach_server_data_setup(&buffer) != 0) { server_error_out(replyPort); } if (buffer == NULL) { mach_server_data_cleanup(NULL, 0, 0); exit(0); } replySize = sizeof(ipc_message_t) + sizeof(mach_msg_trailer_t) + 64; reply = calloc(1, replySize); remap_again: T_LOG("vm_remap (copy = %s) test...", ((remap_copy_pass_idx == 0) ? "FALSE" : "TRUE")); /* create message to send over rights/address/pid/size */ mach_server_construct_header(&message, replyPort); /* server allocation that we plan to remap in the client */ mach_server_create_allocation(&src, size, buffer); lsrc = src + 8193; mach_server_contruct_payload(&message, lsrc, MACH_PORT_NULL /* port */, size - 9000, 0, remap_copy_pass_idx /*copy*/, VM_OP_REMAP); if (debug) { T_LOG("server COPY: Sending 0x%llx, %d, 0x%llx\n", message.address, getpid(), message.size); } memcpy(src_val, (void*)lsrc, 64); src_val[63] = '\0'; check_again: /* Sending over pid/src address/size */ kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } /* Ack from client that it worked */ bzero(reply, replySize); kr = mach_msg(&reply->header, MACH_RCV_MSG, 0, replySize, replyPort, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to get reply from client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } memcpy(dst_val, &reply->value, 64); dst_val[63] = '\0'; if (modified_in_server == FALSE) { if (strncmp(src_val, dst_val, 64)) { T_LOG("Pre modification remap() FAILED: copy(%d) src_val: %s dest_val: %s\n", message.copy, src_val, dst_val); server_error_out(replyPort); } } else { if (message.copy == TRUE) { if (strcmp(src_val, dst_val) == 0) { T_LOG("Data mismatch with Copy: %d src_val: %s dest_val: %s\n", message.copy, src_val, dst_val); server_error_out(replyPort); } } else { if (strcmp(src_val, dst_val)) { T_LOG("Data mismatch with Copy: %d src_val: %s dest_val: %s\n", message.copy, src_val, dst_val); server_error_out(replyPort); } } } if (modified_in_server == FALSE) { /* Now we change our data that has been mapped elsewhere */ memcpy((void*)message.address, "THIS IS DIFFERENT -- BUT WE DON'T know if that's expecTED", 64); memcpy(src_val, (void*)message.address, 64); src_val[63] = '\0'; modified_in_server = TRUE; message.vm_op = VM_OP_NONE; /* Check to see if the data in the other process is as expected */ goto check_again; } if (remap_copy_pass_idx == 0) { /* Next remap mode...so ask the other process to unmap the older mapping. */ message.vm_op = VM_OP_UNMAP; kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } mach_vm_deallocate(mach_task_self(), src, size); T_LOG("PASSED\n"); remap_copy_pass_idx++; modified_in_server = FALSE; /* Next remap pass to test (copy == TRUE). Send data out again to the other process to remap. */ goto remap_again; } T_LOG("PASSED\n"); /* Unmap old mapping in the other process. */ message.vm_op = VM_OP_UNMAP; kr = mach_msg(&message.header, MACH_SEND_MSG, message.header.msgh_size, 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (kr != KERN_SUCCESS) { T_LOG("ERROR: Failed to send message to client: (%d) %s\n", kr, mach_error_string(kr)); server_error_out(replyPort); } free(reply); reply = NULL; mach_server_data_cleanup(buffer, src, size); buffer = NULL; if (debug) { T_LOG("*************** vm_remap_test END ***************\n"); } } |