1 /* $OpenBSD: vmctl.c,v 1.69 2019/05/22 16:19:21 jasper Exp $ */ 2 3 /* 4 * Copyright (c) 2014 Mike Larkin <mlarkin@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/queue.h> 20 #include <sys/uio.h> 21 #include <sys/stat.h> 22 #include <sys/socket.h> 23 #include <sys/un.h> 24 25 #include <machine/vmmvar.h> 26 27 #include <ctype.h> 28 #include <err.h> 29 #include <errno.h> 30 #include <fcntl.h> 31 #include <imsg.h> 32 #include <limits.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <unistd.h> 37 #include <util.h> 38 #include <pwd.h> 39 #include <grp.h> 40 41 #include "vmd.h" 42 #include "virtio.h" 43 #include "vmctl.h" 44 #include "atomicio.h" 45 46 extern char *__progname; 47 uint32_t info_id; 48 char info_name[VMM_MAX_NAME_LEN]; 49 enum actions info_action; 50 unsigned int info_flags; 51 52 /* 53 * vm_start 54 * 55 * Request vmd to start the VM defined by the supplied parameters 56 * 57 * Parameters: 58 * start_id: optional ID of the VM 59 * name: optional name of the VM 60 * memsize: memory size (MB) of the VM to create 61 * nnics: number of vionet network interfaces to create 62 * nics: switch names of the network interfaces to create 63 * ndisks: number of disk images 64 * disks: disk image file names 65 * kernel: kernel image to load 66 * iso: iso image file 67 * instance: create instance from vm 68 * 69 * Return: 70 * 0 if the request to start the VM was sent successfully. 71 * ENOMEM if a memory allocation failure occurred. 72 */ 73 int 74 vm_start(uint32_t start_id, const char *name, int memsize, int nnics, 75 char **nics, int ndisks, char **disks, int *disktypes, char *kernel, 76 char *iso, char *instance, unsigned int bootdevice) 77 { 78 struct vmop_create_params *vmc; 79 struct vm_create_params *vcp; 80 unsigned int flags = 0; 81 int i; 82 const char *s; 83 84 if (memsize) 85 flags |= VMOP_CREATE_MEMORY; 86 if (nnics) 87 flags |= VMOP_CREATE_NETWORK; 88 if (ndisks) 89 flags |= VMOP_CREATE_DISK; 90 if (kernel) 91 flags |= VMOP_CREATE_KERNEL; 92 if (iso) 93 flags |= VMOP_CREATE_CDROM; 94 if (instance) 95 flags |= VMOP_CREATE_INSTANCE; 96 else if (flags != 0) { 97 if (memsize < 1) 98 memsize = VM_DEFAULT_MEMORY; 99 if (ndisks > VMM_MAX_DISKS_PER_VM) 100 errx(1, "too many disks"); 101 else if (ndisks == 0) 102 warnx("starting without disks"); 103 if (kernel == NULL && ndisks == 0 && !iso) 104 errx(1, "no kernel or disk/cdrom specified"); 105 if (nnics == -1) 106 nnics = 0; 107 if (nnics > VMM_MAX_NICS_PER_VM) 108 errx(1, "too many network interfaces"); 109 if (nnics == 0) 110 warnx("starting without network interfaces"); 111 } 112 113 if ((vmc = calloc(1, sizeof(struct vmop_create_params))) == NULL) 114 return (ENOMEM); 115 116 vmc->vmc_flags = flags; 117 118 /* vcp includes configuration that is shared with the kernel */ 119 vcp = &vmc->vmc_params; 120 121 /* 122 * XXX: vmd(8) fills in the actual memory ranges. vmctl(8) 123 * just passes in the actual memory size in MB here. 124 */ 125 vcp->vcp_nmemranges = 1; 126 vcp->vcp_memranges[0].vmr_size = memsize; 127 128 vcp->vcp_ncpus = 1; 129 vcp->vcp_ndisks = ndisks; 130 vcp->vcp_nnics = nnics; 131 vcp->vcp_id = start_id; 132 133 for (i = 0 ; i < ndisks; i++) { 134 if (strlcpy(vcp->vcp_disks[i], disks[i], 135 sizeof(vcp->vcp_disks[i])) >= 136 sizeof(vcp->vcp_disks[i])) 137 errx(1, "disk path too long"); 138 vmc->vmc_disktypes[i] = disktypes[i]; 139 } 140 for (i = 0 ; i < nnics; i++) { 141 vmc->vmc_ifflags[i] = VMIFF_UP; 142 143 if (strcmp(".", nics[i]) == 0) { 144 /* Add a "local" interface */ 145 (void)strlcpy(vmc->vmc_ifswitch[i], "", 146 sizeof(vmc->vmc_ifswitch[i])); 147 vmc->vmc_ifflags[i] |= VMIFF_LOCAL; 148 } else { 149 /* Add an interface to a switch */ 150 if (strlcpy(vmc->vmc_ifswitch[i], nics[i], 151 sizeof(vmc->vmc_ifswitch[i])) >= 152 sizeof(vmc->vmc_ifswitch[i])) 153 errx(1, "interface name too long"); 154 } 155 } 156 if (name != NULL) { 157 /* 158 * Allow VMs names with alphanumeric characters, dot, hyphen 159 * and underscore. But disallow dot, hyphen and underscore at 160 * the start. 161 */ 162 if (*name == '-' || *name == '.' || *name == '_') 163 errx(1, "invalid VM name"); 164 165 for (s = name; *s != '\0'; ++s) { 166 if (!(isalnum(*s) || *s == '.' || *s == '-' || 167 *s == '_')) 168 errx(1, "invalid VM name"); 169 } 170 171 if (strlcpy(vcp->vcp_name, name, 172 sizeof(vcp->vcp_name)) >= sizeof(vcp->vcp_name)) 173 errx(1, "vm name too long"); 174 } 175 if (kernel != NULL) 176 if (strlcpy(vcp->vcp_kernel, kernel, 177 sizeof(vcp->vcp_kernel)) >= sizeof(vcp->vcp_kernel)) 178 errx(1, "kernel name too long"); 179 if (iso != NULL) 180 if (strlcpy(vcp->vcp_cdrom, iso, 181 sizeof(vcp->vcp_cdrom)) >= sizeof(vcp->vcp_cdrom)) 182 errx(1, "cdrom name too long"); 183 if (instance != NULL) 184 if (strlcpy(vmc->vmc_instance, instance, 185 sizeof(vmc->vmc_instance)) >= sizeof(vmc->vmc_instance)) 186 errx(1, "instance vm name too long"); 187 vmc->vmc_bootdevice = bootdevice; 188 189 imsg_compose(ibuf, IMSG_VMDOP_START_VM_REQUEST, 0, 0, -1, 190 vmc, sizeof(struct vmop_create_params)); 191 192 free(vcp); 193 return (0); 194 } 195 196 /* 197 * vm_start_complete 198 * 199 * Callback function invoked when we are expecting an 200 * IMSG_VMDOP_START_VMM_RESPONSE message indicating the completion of 201 * a start vm operation. 202 * 203 * Parameters: 204 * imsg : response imsg received from vmd 205 * ret : return value 206 * autoconnect : open the console after startup 207 * 208 * Return: 209 * Always 1 to indicate we have processed the return message (even if it 210 * was an incorrect/failure message) 211 * 212 * The function also sets 'ret' to the error code as follows: 213 * 0 : Message successfully processed 214 * EINVAL: Invalid or unexpected response from vmd 215 * EIO : vm_start command failed 216 * ENOENT: a specified component of the VM could not be found (disk image, 217 * BIOS firmware image, etc) 218 */ 219 int 220 vm_start_complete(struct imsg *imsg, int *ret, int autoconnect) 221 { 222 struct vmop_result *vmr; 223 int res; 224 225 if (imsg->hdr.type == IMSG_VMDOP_START_VM_RESPONSE) { 226 vmr = (struct vmop_result *)imsg->data; 227 res = vmr->vmr_result; 228 if (res) { 229 switch (res) { 230 case VMD_BIOS_MISSING: 231 warnx("vmm bios firmware file not found."); 232 *ret = ENOENT; 233 break; 234 case VMD_DISK_MISSING: 235 warnx("could not open disk image(s)"); 236 *ret = ENOENT; 237 break; 238 case VMD_DISK_INVALID: 239 warnx("specified disk image(s) are " 240 "not regular files"); 241 *ret = ENOENT; 242 break; 243 case VMD_CDROM_MISSING: 244 warnx("could not find specified iso image"); 245 *ret = ENOENT; 246 break; 247 case VMD_CDROM_INVALID: 248 warnx("specified iso image is not a regular " 249 "file"); 250 *ret = ENOENT; 251 break; 252 default: 253 errno = res; 254 warn("start vm command failed"); 255 *ret = EIO; 256 } 257 } else if (autoconnect) { 258 /* does not return */ 259 ctl_openconsole(vmr->vmr_ttyname); 260 } else { 261 warnx("started vm %d successfully, tty %s", 262 vmr->vmr_id, vmr->vmr_ttyname); 263 *ret = 0; 264 } 265 } else { 266 warnx("unexpected response received from vmd"); 267 *ret = EINVAL; 268 } 269 270 return (1); 271 } 272 273 void 274 send_vm(uint32_t id, const char *name) 275 { 276 struct vmop_id vid; 277 int fds[2], readn, writen; 278 long pagesz; 279 char *buf; 280 281 pagesz = getpagesize(); 282 buf = malloc(pagesz); 283 if (buf == NULL) 284 errx(1, "%s: memory allocation failure", __func__); 285 286 memset(&vid, 0, sizeof(vid)); 287 vid.vid_id = id; 288 if (name != NULL) 289 strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 290 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, fds) == -1) { 291 warnx("%s: socketpair creation failed", __func__); 292 } else { 293 imsg_compose(ibuf, IMSG_VMDOP_SEND_VM_REQUEST, 0, 0, fds[0], 294 &vid, sizeof(vid)); 295 imsg_flush(ibuf); 296 while (1) { 297 readn = atomicio(read, fds[1], buf, pagesz); 298 if (!readn) 299 break; 300 writen = atomicio(vwrite, STDOUT_FILENO, buf, 301 readn); 302 if (writen != readn) 303 break; 304 } 305 if (vid.vid_id) 306 warnx("sent vm %d successfully", vid.vid_id); 307 else 308 warnx("sent vm %s successfully", vid.vid_name); 309 } 310 311 free(buf); 312 } 313 314 void 315 vm_receive(uint32_t id, const char *name) 316 { 317 struct vmop_id vid; 318 int fds[2], readn, writen; 319 long pagesz; 320 char *buf; 321 322 pagesz = getpagesize(); 323 buf = malloc(pagesz); 324 if (buf == NULL) 325 errx(1, "%s: memory allocation failure", __func__); 326 327 memset(&vid, 0, sizeof(vid)); 328 if (name != NULL) 329 strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 330 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, fds) == -1) { 331 warnx("%s: socketpair creation failed", __func__); 332 } else { 333 imsg_compose(ibuf, IMSG_VMDOP_RECEIVE_VM_REQUEST, 0, 0, fds[0], 334 &vid, sizeof(vid)); 335 imsg_flush(ibuf); 336 while (1) { 337 readn = atomicio(read, STDIN_FILENO, buf, pagesz); 338 if (!readn) { 339 close(fds[1]); 340 break; 341 } 342 writen = atomicio(vwrite, fds[1], buf, readn); 343 if (writen != readn) 344 break; 345 } 346 } 347 348 free(buf); 349 } 350 351 void 352 pause_vm(uint32_t pause_id, const char *name) 353 { 354 struct vmop_id vid; 355 356 memset(&vid, 0, sizeof(vid)); 357 vid.vid_id = pause_id; 358 if (name != NULL) 359 (void)strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 360 361 imsg_compose(ibuf, IMSG_VMDOP_PAUSE_VM, 0, 0, -1, 362 &vid, sizeof(vid)); 363 } 364 365 int 366 pause_vm_complete(struct imsg *imsg, int *ret) 367 { 368 struct vmop_result *vmr; 369 int res; 370 371 if (imsg->hdr.type == IMSG_VMDOP_PAUSE_VM_RESPONSE) { 372 vmr = (struct vmop_result *)imsg->data; 373 res = vmr->vmr_result; 374 if (res) { 375 errno = res; 376 warn("pause vm command failed"); 377 *ret = EIO; 378 } else { 379 warnx("paused vm %d successfully", vmr->vmr_id); 380 *ret = 0; 381 } 382 } else { 383 warnx("unexpected response received from vmd"); 384 *ret = EINVAL; 385 } 386 387 return (1); 388 } 389 390 void 391 unpause_vm(uint32_t pause_id, const char *name) 392 { 393 struct vmop_id vid; 394 395 memset(&vid, 0, sizeof(vid)); 396 vid.vid_id = pause_id; 397 if (name != NULL) 398 (void)strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 399 400 imsg_compose(ibuf, IMSG_VMDOP_UNPAUSE_VM, 0, 0, -1, 401 &vid, sizeof(vid)); 402 } 403 404 int 405 unpause_vm_complete(struct imsg *imsg, int *ret) 406 { 407 struct vmop_result *vmr; 408 int res; 409 410 if (imsg->hdr.type == IMSG_VMDOP_UNPAUSE_VM_RESPONSE) { 411 vmr = (struct vmop_result *)imsg->data; 412 res = vmr->vmr_result; 413 if (res) { 414 errno = res; 415 warn("unpause vm command failed"); 416 *ret = EIO; 417 } else { 418 warnx("unpaused vm %d successfully", vmr->vmr_id); 419 *ret = 0; 420 } 421 } else { 422 warnx("unexpected response received from vmd"); 423 *ret = EINVAL; 424 } 425 426 return (1); 427 } 428 429 /* 430 * terminate_vm 431 * 432 * Request vmd to stop the VM indicated 433 * 434 * Parameters: 435 * terminate_id: ID of the vm to be terminated 436 * name: optional name of the VM to be terminated 437 * flags: VMOP_FORCE or VMOP_WAIT flags 438 */ 439 void 440 terminate_vm(uint32_t terminate_id, const char *name, unsigned int flags) 441 { 442 struct vmop_id vid; 443 444 memset(&vid, 0, sizeof(vid)); 445 vid.vid_id = terminate_id; 446 if (name != NULL) { 447 (void)strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 448 fprintf(stderr, "stopping vm %s: ", name); 449 } else { 450 fprintf(stderr, "stopping vm: "); 451 } 452 453 vid.vid_flags = flags & (VMOP_FORCE|VMOP_WAIT); 454 455 imsg_compose(ibuf, IMSG_VMDOP_TERMINATE_VM_REQUEST, 456 0, 0, -1, &vid, sizeof(vid)); 457 } 458 459 /* 460 * terminate_vm_complete 461 * 462 * Callback function invoked when we are expecting an 463 * IMSG_VMDOP_TERMINATE_VMM_RESPONSE message indicating the completion of 464 * a terminate vm operation. 465 * 466 * Parameters: 467 * imsg : response imsg received from vmd 468 * ret : return value 469 * flags: VMOP_FORCE or VMOP_WAIT flags 470 * 471 * Return: 472 * Always 1 to indicate we have processed the return message (even if it 473 * was an incorrect/failure message) 474 * 475 * The function also sets 'ret' to the error code as follows: 476 * 0 : Message successfully processed 477 * EINVAL: Invalid or unexpected response from vmd 478 * EIO : terminate_vm command failed 479 */ 480 int 481 terminate_vm_complete(struct imsg *imsg, int *ret, unsigned int flags) 482 { 483 struct vmop_result *vmr; 484 int res; 485 486 if (imsg->hdr.type == IMSG_VMDOP_TERMINATE_VM_RESPONSE) { 487 vmr = (struct vmop_result *)imsg->data; 488 res = vmr->vmr_result; 489 if (res) { 490 switch (res) { 491 case VMD_VM_STOP_INVALID: 492 fprintf(stderr, 493 "cannot stop vm that is not running\n"); 494 *ret = EINVAL; 495 break; 496 case ENOENT: 497 fprintf(stderr, "vm not found\n"); 498 *ret = EIO; 499 break; 500 case EINTR: 501 fprintf(stderr, "interrupted call\n"); 502 *ret = EIO; 503 break; 504 default: 505 errno = res; 506 fprintf(stderr, "failed: %s\n", 507 strerror(res)); 508 *ret = EIO; 509 } 510 } else if (flags & VMOP_WAIT) { 511 fprintf(stderr, "terminated vm %d\n", vmr->vmr_id); 512 } else if (flags & VMOP_FORCE) { 513 fprintf(stderr, "forced to terminate vm %d\n", 514 vmr->vmr_id); 515 } else { 516 fprintf(stderr, "requested to shutdown vm %d\n", 517 vmr->vmr_id); 518 *ret = 0; 519 } 520 } else { 521 fprintf(stderr, "unexpected response received from vmd\n"); 522 *ret = EINVAL; 523 } 524 errno = *ret; 525 526 return (1); 527 } 528 529 /* 530 * terminate_all 531 * 532 * Request to stop all VMs gracefully 533 * 534 * Parameters 535 * list: the vm information (consolidated) returned from vmd via imsg 536 * ct : the size (number of elements in 'list') of the result 537 * flags: VMOP_FORCE or VMOP_WAIT flags 538 */ 539 void 540 terminate_all(struct vmop_info_result *list, size_t ct, unsigned int flags) 541 { 542 struct vm_info_result *vir; 543 struct vmop_info_result *vmi; 544 struct parse_result res; 545 size_t i; 546 547 for (i = 0; i < ct; i++) { 548 vmi = &list[i]; 549 vir = &vmi->vir_info; 550 551 /* The VM is already stopped */ 552 if (vir->vir_creator_pid == 0 || vir->vir_id == 0) 553 continue; 554 555 memset(&res, 0, sizeof(res)); 556 res.action = CMD_STOP; 557 res.id = 0; 558 res.flags = info_flags; 559 560 if ((res.name = strdup(vir->vir_name)) == NULL) 561 errx(1, "strdup"); 562 563 vmmaction(&res); 564 } 565 } 566 567 /* 568 * waitfor_vm 569 * 570 * Wait until vmd stopped the indicated VM 571 * 572 * Parameters: 573 * terminate_id: ID of the vm to be terminated 574 * name: optional name of the VM to be terminated 575 */ 576 void 577 waitfor_vm(uint32_t terminate_id, const char *name) 578 { 579 struct vmop_id vid; 580 581 memset(&vid, 0, sizeof(vid)); 582 vid.vid_id = terminate_id; 583 if (name != NULL) { 584 (void)strlcpy(vid.vid_name, name, sizeof(vid.vid_name)); 585 fprintf(stderr, "waiting for vm %s: ", name); 586 } else { 587 fprintf(stderr, "waiting for vm: "); 588 } 589 590 imsg_compose(ibuf, IMSG_VMDOP_WAIT_VM_REQUEST, 591 0, 0, -1, &vid, sizeof(vid)); 592 } 593 594 /* 595 * get_info_vm 596 * 597 * Return the list of all running VMs or find a specific VM by ID or name. 598 * 599 * Parameters: 600 * id: optional ID of a VM to list 601 * name: optional name of a VM to list 602 * action: if CMD_CONSOLE or CMD_STOP open a console or terminate the VM. 603 * flags: optional flags used by the CMD_STOP action. 604 * 605 * Request a list of running VMs from vmd 606 */ 607 void 608 get_info_vm(uint32_t id, const char *name, enum actions action, 609 unsigned int flags) 610 { 611 info_id = id; 612 if (name != NULL) 613 (void)strlcpy(info_name, name, sizeof(info_name)); 614 info_action = action; 615 info_flags = flags; 616 imsg_compose(ibuf, IMSG_VMDOP_GET_INFO_VM_REQUEST, 0, 0, -1, NULL, 0); 617 } 618 619 /* 620 * check_info_id 621 * 622 * Check if requested name or ID of a VM matches specified arguments 623 * 624 * Parameters: 625 * name: name of the VM 626 * id: ID of the VM 627 */ 628 int 629 check_info_id(const char *name, uint32_t id) 630 { 631 if (info_id == 0 && *info_name == '\0') 632 return (-1); 633 if (info_id != 0 && info_id == id) 634 return (1); 635 if (*info_name != '\0' && name && strcmp(info_name, name) == 0) 636 return (1); 637 return (0); 638 } 639 640 /* 641 * add_info 642 * 643 * Callback function invoked when we are expecting an 644 * IMSG_VMDOP_GET_INFO_VM_DATA message indicating the receipt of additional 645 * "list vm" data, or an IMSG_VMDOP_GET_INFO_VM_END_DATA message indicating 646 * that no additional "list vm" data will be forthcoming. 647 * 648 * Parameters: 649 * imsg : response imsg received from vmd 650 * ret : return value 651 * 652 * Return: 653 * 0 : the returned data was successfully added to the "list vm" data. 654 * The caller can expect more data. 655 * 1 : IMSG_VMDOP_GET_INFO_VM_END_DATA received (caller should not call 656 * add_info again), or an error occurred adding the returned data 657 * to the "list vm" data. The caller should check the value of 658 * 'ret' to determine which case occurred. 659 * 660 * This function does not return if a VM is found and info_action is CMD_CONSOLE 661 * 662 * The function also sets 'ret' to the error code as follows: 663 * 0 : Message successfully processed 664 * EINVAL: Invalid or unexpected response from vmd 665 * ENOMEM: memory allocation failure 666 */ 667 int 668 add_info(struct imsg *imsg, int *ret) 669 { 670 static size_t ct = 0; 671 static struct vmop_info_result *vir = NULL; 672 673 if (imsg->hdr.type == IMSG_VMDOP_GET_INFO_VM_DATA) { 674 vir = reallocarray(vir, ct + 1, 675 sizeof(struct vmop_info_result)); 676 if (vir == NULL) { 677 *ret = ENOMEM; 678 return (1); 679 } 680 memcpy(&vir[ct], imsg->data, sizeof(struct vmop_info_result)); 681 ct++; 682 *ret = 0; 683 return (0); 684 } else if (imsg->hdr.type == IMSG_VMDOP_GET_INFO_VM_END_DATA) { 685 switch (info_action) { 686 case CMD_CONSOLE: 687 vm_console(vir, ct); 688 break; 689 case CMD_STOPALL: 690 terminate_all(vir, ct, info_flags); 691 break; 692 default: 693 print_vm_info(vir, ct); 694 break; 695 } 696 free(vir); 697 *ret = 0; 698 return (1); 699 } else { 700 *ret = EINVAL; 701 return (1); 702 } 703 } 704 705 /* 706 * vm_state 707 * 708 * Returns a string representing the current VM state, note that the order 709 * matters. A paused VM does have the VM_STATE_RUNNING bit set, but 710 * VM_STATE_PAUSED is more significant to report. 711 * 712 * Parameters 713 * vm_state: mask indicating the vm state 714 */ 715 const char * 716 vm_state(unsigned int mask) 717 { 718 if (mask & VM_STATE_PAUSED) 719 return "paused"; 720 else if (mask & VM_STATE_RUNNING) 721 return "running"; 722 else if (mask & VM_STATE_SHUTDOWN) 723 return "stopping"; 724 /* Presence of absence of other flags */ 725 else if (!mask || (mask & VM_STATE_DISABLED)) 726 return "stopped"; 727 728 return "unknown"; 729 } 730 731 /* 732 * print_vm_info 733 * 734 * Prints the vm information returned from vmd in 'list' to stdout. 735 * 736 * Parameters 737 * list: the vm information (consolidated) returned from vmd via imsg 738 * ct : the size (number of elements in 'list') of the result 739 */ 740 void 741 print_vm_info(struct vmop_info_result *list, size_t ct) 742 { 743 struct vm_info_result *vir; 744 struct vmop_info_result *vmi; 745 size_t i; 746 char *tty; 747 char curmem[FMT_SCALED_STRSIZE]; 748 char maxmem[FMT_SCALED_STRSIZE]; 749 char user[16], group[16]; 750 const char *name; 751 int running; 752 753 printf("%5s %5s %5s %7s %7s %7s %12s %8s %s\n", "ID", "PID", "VCPUS", 754 "MAXMEM", "CURMEM", "TTY", "OWNER", "STATE", "NAME"); 755 756 for (i = 0; i < ct; i++) { 757 vmi = &list[i]; 758 vir = &vmi->vir_info; 759 running = (vir->vir_creator_pid != 0 && vir->vir_id != 0); 760 if (check_info_id(vir->vir_name, vir->vir_id)) { 761 /* get user name */ 762 name = user_from_uid(vmi->vir_uid, 1); 763 if (name == NULL) 764 (void)snprintf(user, sizeof(user), 765 "%d", vmi->vir_uid); 766 else 767 (void)strlcpy(user, name, sizeof(user)); 768 /* get group name */ 769 if (vmi->vir_gid != -1) { 770 if (vmi->vir_uid == 0) 771 *user = '\0'; 772 name = group_from_gid(vmi->vir_gid, 1); 773 if (name == NULL) 774 (void)snprintf(group, sizeof(group), 775 ":%lld", vmi->vir_gid); 776 else 777 (void)snprintf(group, sizeof(group), 778 ":%s", name); 779 (void)strlcat(user, group, sizeof(user)); 780 } 781 782 (void)strlcpy(curmem, "-", sizeof(curmem)); 783 (void)strlcpy(maxmem, "-", sizeof(maxmem)); 784 785 (void)fmt_scaled(vir->vir_memory_size * 1024 * 1024, 786 maxmem); 787 788 if (running) { 789 if (*vmi->vir_ttyname == '\0') 790 tty = "-"; 791 /* get tty - skip /dev/ path */ 792 else if ((tty = strrchr(vmi->vir_ttyname, 793 '/')) == NULL || ++tty == '\0') 794 tty = list[i].vir_ttyname; 795 796 (void)fmt_scaled(vir->vir_used_size, curmem); 797 798 /* running vm */ 799 printf("%5u %5u %5zd %7s %7s %7s %12s %8s %s\n", 800 vir->vir_id, vir->vir_creator_pid, 801 vir->vir_ncpus, maxmem, curmem, 802 tty, user, vm_state(vmi->vir_state), 803 vir->vir_name); 804 } else { 805 /* disabled vm */ 806 printf("%5u %5s %5zd %7s %7s %7s %12s %8s %s\n", 807 vir->vir_id, "-", 808 vir->vir_ncpus, maxmem, curmem, 809 "-", user, vm_state(vmi->vir_state), 810 vir->vir_name); 811 } 812 } 813 } 814 } 815 816 /* 817 * vm_console 818 * 819 * Connects to the vm console returned from vmd in 'list'. 820 * 821 * Parameters 822 * list: the vm information (consolidated) returned from vmd via imsg 823 * ct : the size (number of elements in 'list') of the result 824 */ 825 __dead void 826 vm_console(struct vmop_info_result *list, size_t ct) 827 { 828 struct vmop_info_result *vir; 829 size_t i; 830 831 for (i = 0; i < ct; i++) { 832 vir = &list[i]; 833 if ((check_info_id(vir->vir_info.vir_name, 834 vir->vir_info.vir_id) > 0) && 835 (vir->vir_ttyname[0] != '\0')) { 836 /* does not return */ 837 ctl_openconsole(vir->vir_ttyname); 838 } 839 } 840 841 errx(1, "console not found"); 842 } 843 844 /* 845 * open_imagefile 846 * 847 * Open an imagefile with the specified type, path and size. 848 * 849 * Parameters: 850 * type : format of the image file 851 * imgfile_path: path to the image file to create 852 * flags : flags for open(2), e.g. O_RDONLY 853 * file : file structure 854 * sz : size of the image file 855 * 856 * Return: 857 * fd : Returns file descriptor of the new image file 858 * -1 : Operation failed. errno is set. 859 */ 860 int 861 open_imagefile(int type, const char *imgfile_path, int flags, 862 struct virtio_backing *file, off_t *sz) 863 { 864 int fd, ret, basefd[VM_MAX_BASE_PER_DISK], nfd, i; 865 char path[PATH_MAX]; 866 867 *sz = 0; 868 if ((fd = open(imgfile_path, flags)) == -1) 869 return (-1); 870 871 basefd[0] = fd; 872 nfd = 1; 873 874 errno = 0; 875 switch (type) { 876 case VMDF_QCOW2: 877 if (strlcpy(path, imgfile_path, sizeof(path)) >= sizeof(path)) 878 return (-1); 879 for (i = 0; i < VM_MAX_BASE_PER_DISK - 1; i++, nfd++) { 880 if ((ret = virtio_qcow2_get_base(basefd[i], 881 path, sizeof(path), imgfile_path)) == -1) { 882 log_debug("%s: failed to get base %d", __func__, i); 883 return -1; 884 } else if (ret == 0) 885 break; 886 887 /* 888 * This might be called after unveil is already 889 * locked but it is save to ignore the EPERM error 890 * here as the subsequent open would fail as well. 891 */ 892 if ((ret = unveil(path, "r")) != 0 && 893 (ret != EPERM)) 894 err(1, "unveil"); 895 if ((basefd[i + 1] = open(path, O_RDONLY)) == -1) { 896 log_warn("%s: failed to open base %s", 897 __func__, path); 898 return (-1); 899 } 900 } 901 ret = virtio_qcow2_init(file, sz, basefd, nfd); 902 break; 903 default: 904 ret = virtio_raw_init(file, sz, &fd, 1); 905 break; 906 } 907 908 if (ret == -1) { 909 for (i = 0; i < nfd; i++) 910 close(basefd[i]); 911 return (-1); 912 } 913 914 return (fd); 915 } 916 917 /* 918 * create_imagefile 919 * 920 * Create an empty imagefile with the specified type, path and size. 921 * 922 * Parameters: 923 * type : format of the image file 924 * imgfile_path: path to the image file to create 925 * base_path : path to the qcow2 base image 926 * imgsize : size of the image file to create (in MB) 927 * format : string identifying the format 928 * 929 * Return: 930 * EEXIST: The requested image file already exists 931 * 0 : Image file successfully created 932 * Exxxx : Various other Exxxx errno codes due to other I/O errors 933 */ 934 int 935 create_imagefile(int type, const char *imgfile_path, const char *base_path, 936 long imgsize, const char **format) 937 { 938 int ret; 939 940 switch (type) { 941 case VMDF_QCOW2: 942 *format = "qcow2"; 943 ret = virtio_qcow2_create(imgfile_path, base_path, imgsize); 944 break; 945 default: 946 *format = "raw"; 947 ret = virtio_raw_create(imgfile_path, imgsize); 948 break; 949 } 950 951 return (ret); 952 } 953 954