1 /* 2 * An implementation of key value pair (KVP) functionality for Linux. 3 * 4 * 5 * Copyright (C) 2010, Novell, Inc. 6 * Author : K. Y. Srinivasan <ksrinivasan@novell.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License version 2 as published 10 * by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 15 * NON INFRINGEMENT. See the GNU General Public License for more 16 * details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 */ 23 24 25 #include <sys/poll.h> 26 #include <sys/utsname.h> 27 #include <stdio.h> 28 #include <stdlib.h> 29 #include <unistd.h> 30 #include <string.h> 31 #include <ctype.h> 32 #include <errno.h> 33 #include <arpa/inet.h> 34 #include <linux/hyperv.h> 35 #include <ifaddrs.h> 36 #include <netdb.h> 37 #include <syslog.h> 38 #include <sys/stat.h> 39 #include <fcntl.h> 40 #include <dirent.h> 41 #include <net/if.h> 42 #include <limits.h> 43 #include <getopt.h> 44 45 /* 46 * KVP protocol: The user mode component first registers with the 47 * the kernel component. Subsequently, the kernel component requests, data 48 * for the specified keys. In response to this message the user mode component 49 * fills in the value corresponding to the specified key. We overload the 50 * sequence field in the cn_msg header to define our KVP message types. 51 * 52 * We use this infrastructure for also supporting queries from user mode 53 * application for state that may be maintained in the KVP kernel component. 54 * 55 */ 56 57 58 enum key_index { 59 FullyQualifiedDomainName = 0, 60 IntegrationServicesVersion, /*This key is serviced in the kernel*/ 61 NetworkAddressIPv4, 62 NetworkAddressIPv6, 63 OSBuildNumber, 64 OSName, 65 OSMajorVersion, 66 OSMinorVersion, 67 OSVersion, 68 ProcessorArchitecture 69 }; 70 71 72 enum { 73 IPADDR = 0, 74 NETMASK, 75 GATEWAY, 76 DNS 77 }; 78 79 static int in_hand_shake = 1; 80 81 static char *os_name = ""; 82 static char *os_major = ""; 83 static char *os_minor = ""; 84 static char *processor_arch; 85 static char *os_build; 86 static char *os_version; 87 static char *lic_version = "Unknown version"; 88 static char full_domain_name[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; 89 static struct utsname uts_buf; 90 91 /* 92 * The location of the interface configuration file. 93 */ 94 95 #define KVP_CONFIG_LOC "/var/lib/hyperv" 96 97 #ifndef KVP_SCRIPTS_PATH 98 #define KVP_SCRIPTS_PATH "/usr/libexec/hypervkvpd/" 99 #endif 100 101 #define KVP_NET_DIR "/sys/class/net/" 102 103 #define MAX_FILE_NAME 100 104 #define ENTRIES_PER_BLOCK 50 105 106 struct kvp_record { 107 char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; 108 char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; 109 }; 110 111 struct kvp_file_state { 112 int fd; 113 int num_blocks; 114 struct kvp_record *records; 115 int num_records; 116 char fname[MAX_FILE_NAME]; 117 }; 118 119 static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; 120 121 static void kvp_acquire_lock(int pool) 122 { 123 struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; 124 fl.l_pid = getpid(); 125 126 if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { 127 syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool, 128 errno, strerror(errno)); 129 exit(EXIT_FAILURE); 130 } 131 } 132 133 static void kvp_release_lock(int pool) 134 { 135 struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; 136 fl.l_pid = getpid(); 137 138 if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { 139 syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool, 140 errno, strerror(errno)); 141 exit(EXIT_FAILURE); 142 } 143 } 144 145 static void kvp_update_file(int pool) 146 { 147 FILE *filep; 148 149 /* 150 * We are going to write our in-memory registry out to 151 * disk; acquire the lock first. 152 */ 153 kvp_acquire_lock(pool); 154 155 filep = fopen(kvp_file_info[pool].fname, "we"); 156 if (!filep) { 157 syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, 158 errno, strerror(errno)); 159 kvp_release_lock(pool); 160 exit(EXIT_FAILURE); 161 } 162 163 fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record), 164 kvp_file_info[pool].num_records, filep); 165 166 if (ferror(filep) || fclose(filep)) { 167 kvp_release_lock(pool); 168 syslog(LOG_ERR, "Failed to write file, pool: %d", pool); 169 exit(EXIT_FAILURE); 170 } 171 172 kvp_release_lock(pool); 173 } 174 175 static void kvp_update_mem_state(int pool) 176 { 177 FILE *filep; 178 size_t records_read = 0; 179 struct kvp_record *record = kvp_file_info[pool].records; 180 struct kvp_record *readp; 181 int num_blocks = kvp_file_info[pool].num_blocks; 182 int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; 183 184 kvp_acquire_lock(pool); 185 186 filep = fopen(kvp_file_info[pool].fname, "re"); 187 if (!filep) { 188 syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, 189 errno, strerror(errno)); 190 kvp_release_lock(pool); 191 exit(EXIT_FAILURE); 192 } 193 for (;;) { 194 readp = &record[records_read]; 195 records_read += fread(readp, sizeof(struct kvp_record), 196 ENTRIES_PER_BLOCK * num_blocks, 197 filep); 198 199 if (ferror(filep)) { 200 syslog(LOG_ERR, "Failed to read file, pool: %d", pool); 201 exit(EXIT_FAILURE); 202 } 203 204 if (!feof(filep)) { 205 /* 206 * We have more data to read. 207 */ 208 num_blocks++; 209 record = realloc(record, alloc_unit * num_blocks); 210 211 if (record == NULL) { 212 syslog(LOG_ERR, "malloc failed"); 213 exit(EXIT_FAILURE); 214 } 215 continue; 216 } 217 break; 218 } 219 220 kvp_file_info[pool].num_blocks = num_blocks; 221 kvp_file_info[pool].records = record; 222 kvp_file_info[pool].num_records = records_read; 223 224 fclose(filep); 225 kvp_release_lock(pool); 226 } 227 static int kvp_file_init(void) 228 { 229 int fd; 230 FILE *filep; 231 size_t records_read; 232 char *fname; 233 struct kvp_record *record; 234 struct kvp_record *readp; 235 int num_blocks; 236 int i; 237 int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; 238 239 if (access(KVP_CONFIG_LOC, F_OK)) { 240 if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) { 241 syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC, 242 errno, strerror(errno)); 243 exit(EXIT_FAILURE); 244 } 245 } 246 247 for (i = 0; i < KVP_POOL_COUNT; i++) { 248 fname = kvp_file_info[i].fname; 249 records_read = 0; 250 num_blocks = 1; 251 sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); 252 fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); 253 254 if (fd == -1) 255 return 1; 256 257 258 filep = fopen(fname, "re"); 259 if (!filep) { 260 close(fd); 261 return 1; 262 } 263 264 record = malloc(alloc_unit * num_blocks); 265 if (record == NULL) { 266 fclose(filep); 267 close(fd); 268 return 1; 269 } 270 for (;;) { 271 readp = &record[records_read]; 272 records_read += fread(readp, sizeof(struct kvp_record), 273 ENTRIES_PER_BLOCK, 274 filep); 275 276 if (ferror(filep)) { 277 syslog(LOG_ERR, "Failed to read file, pool: %d", 278 i); 279 exit(EXIT_FAILURE); 280 } 281 282 if (!feof(filep)) { 283 /* 284 * We have more data to read. 285 */ 286 num_blocks++; 287 record = realloc(record, alloc_unit * 288 num_blocks); 289 if (record == NULL) { 290 fclose(filep); 291 close(fd); 292 return 1; 293 } 294 continue; 295 } 296 break; 297 } 298 kvp_file_info[i].fd = fd; 299 kvp_file_info[i].num_blocks = num_blocks; 300 kvp_file_info[i].records = record; 301 kvp_file_info[i].num_records = records_read; 302 fclose(filep); 303 304 } 305 306 return 0; 307 } 308 309 static int kvp_key_delete(int pool, const __u8 *key, int key_size) 310 { 311 int i; 312 int j, k; 313 int num_records; 314 struct kvp_record *record; 315 316 /* 317 * First update the in-memory state. 318 */ 319 kvp_update_mem_state(pool); 320 321 num_records = kvp_file_info[pool].num_records; 322 record = kvp_file_info[pool].records; 323 324 for (i = 0; i < num_records; i++) { 325 if (memcmp(key, record[i].key, key_size)) 326 continue; 327 /* 328 * Found a match; just move the remaining 329 * entries up. 330 */ 331 if (i == num_records) { 332 kvp_file_info[pool].num_records--; 333 kvp_update_file(pool); 334 return 0; 335 } 336 337 j = i; 338 k = j + 1; 339 for (; k < num_records; k++) { 340 strcpy(record[j].key, record[k].key); 341 strcpy(record[j].value, record[k].value); 342 j++; 343 } 344 345 kvp_file_info[pool].num_records--; 346 kvp_update_file(pool); 347 return 0; 348 } 349 return 1; 350 } 351 352 static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size, 353 const __u8 *value, int value_size) 354 { 355 int i; 356 int num_records; 357 struct kvp_record *record; 358 int num_blocks; 359 360 if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || 361 (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) 362 return 1; 363 364 /* 365 * First update the in-memory state. 366 */ 367 kvp_update_mem_state(pool); 368 369 num_records = kvp_file_info[pool].num_records; 370 record = kvp_file_info[pool].records; 371 num_blocks = kvp_file_info[pool].num_blocks; 372 373 for (i = 0; i < num_records; i++) { 374 if (memcmp(key, record[i].key, key_size)) 375 continue; 376 /* 377 * Found a match; just update the value - 378 * this is the modify case. 379 */ 380 memcpy(record[i].value, value, value_size); 381 kvp_update_file(pool); 382 return 0; 383 } 384 385 /* 386 * Need to add a new entry; 387 */ 388 if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { 389 /* Need to allocate a larger array for reg entries. */ 390 record = realloc(record, sizeof(struct kvp_record) * 391 ENTRIES_PER_BLOCK * (num_blocks + 1)); 392 393 if (record == NULL) 394 return 1; 395 kvp_file_info[pool].num_blocks++; 396 397 } 398 memcpy(record[i].value, value, value_size); 399 memcpy(record[i].key, key, key_size); 400 kvp_file_info[pool].records = record; 401 kvp_file_info[pool].num_records++; 402 kvp_update_file(pool); 403 return 0; 404 } 405 406 static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value, 407 int value_size) 408 { 409 int i; 410 int num_records; 411 struct kvp_record *record; 412 413 if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || 414 (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) 415 return 1; 416 417 /* 418 * First update the in-memory state. 419 */ 420 kvp_update_mem_state(pool); 421 422 num_records = kvp_file_info[pool].num_records; 423 record = kvp_file_info[pool].records; 424 425 for (i = 0; i < num_records; i++) { 426 if (memcmp(key, record[i].key, key_size)) 427 continue; 428 /* 429 * Found a match; just copy the value out. 430 */ 431 memcpy(value, record[i].value, value_size); 432 return 0; 433 } 434 435 return 1; 436 } 437 438 static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, 439 __u8 *value, int value_size) 440 { 441 struct kvp_record *record; 442 443 /* 444 * First update our in-memory database. 445 */ 446 kvp_update_mem_state(pool); 447 record = kvp_file_info[pool].records; 448 449 if (index >= kvp_file_info[pool].num_records) { 450 return 1; 451 } 452 453 memcpy(key, record[index].key, key_size); 454 memcpy(value, record[index].value, value_size); 455 return 0; 456 } 457 458 459 void kvp_get_os_info(void) 460 { 461 FILE *file; 462 char *p, buf[512]; 463 464 uname(&uts_buf); 465 os_version = uts_buf.release; 466 os_build = strdup(uts_buf.release); 467 468 os_name = uts_buf.sysname; 469 processor_arch = uts_buf.machine; 470 471 /* 472 * The current windows host (win7) expects the build 473 * string to be of the form: x.y.z 474 * Strip additional information we may have. 475 */ 476 p = strchr(os_version, '-'); 477 if (p) 478 *p = '\0'; 479 480 /* 481 * Parse the /etc/os-release file if present: 482 * http://www.freedesktop.org/software/systemd/man/os-release.html 483 */ 484 file = fopen("/etc/os-release", "r"); 485 if (file != NULL) { 486 while (fgets(buf, sizeof(buf), file)) { 487 char *value, *q; 488 489 /* Ignore comments */ 490 if (buf[0] == '#') 491 continue; 492 493 /* Split into name=value */ 494 p = strchr(buf, '='); 495 if (!p) 496 continue; 497 *p++ = 0; 498 499 /* Remove quotes and newline; un-escape */ 500 value = p; 501 q = p; 502 while (*p) { 503 if (*p == '\\') { 504 ++p; 505 if (!*p) 506 break; 507 *q++ = *p++; 508 } else if (*p == '\'' || *p == '"' || 509 *p == '\n') { 510 ++p; 511 } else { 512 *q++ = *p++; 513 } 514 } 515 *q = 0; 516 517 if (!strcmp(buf, "NAME")) { 518 p = strdup(value); 519 if (!p) 520 break; 521 os_name = p; 522 } else if (!strcmp(buf, "VERSION_ID")) { 523 p = strdup(value); 524 if (!p) 525 break; 526 os_major = p; 527 } 528 } 529 fclose(file); 530 return; 531 } 532 533 /* Fallback for older RH/SUSE releases */ 534 file = fopen("/etc/SuSE-release", "r"); 535 if (file != NULL) 536 goto kvp_osinfo_found; 537 file = fopen("/etc/redhat-release", "r"); 538 if (file != NULL) 539 goto kvp_osinfo_found; 540 541 /* 542 * We don't have information about the os. 543 */ 544 return; 545 546 kvp_osinfo_found: 547 /* up to three lines */ 548 p = fgets(buf, sizeof(buf), file); 549 if (p) { 550 p = strchr(buf, '\n'); 551 if (p) 552 *p = '\0'; 553 p = strdup(buf); 554 if (!p) 555 goto done; 556 os_name = p; 557 558 /* second line */ 559 p = fgets(buf, sizeof(buf), file); 560 if (p) { 561 p = strchr(buf, '\n'); 562 if (p) 563 *p = '\0'; 564 p = strdup(buf); 565 if (!p) 566 goto done; 567 os_major = p; 568 569 /* third line */ 570 p = fgets(buf, sizeof(buf), file); 571 if (p) { 572 p = strchr(buf, '\n'); 573 if (p) 574 *p = '\0'; 575 p = strdup(buf); 576 if (p) 577 os_minor = p; 578 } 579 } 580 } 581 582 done: 583 fclose(file); 584 return; 585 } 586 587 588 589 /* 590 * Retrieve an interface name corresponding to the specified guid. 591 * If there is a match, the function returns a pointer 592 * to the interface name and if not, a NULL is returned. 593 * If a match is found, the caller is responsible for 594 * freeing the memory. 595 */ 596 597 static char *kvp_get_if_name(char *guid) 598 { 599 DIR *dir; 600 struct dirent *entry; 601 FILE *file; 602 char *p, *x; 603 char *if_name = NULL; 604 char buf[256]; 605 char dev_id[PATH_MAX]; 606 607 dir = opendir(KVP_NET_DIR); 608 if (dir == NULL) 609 return NULL; 610 611 while ((entry = readdir(dir)) != NULL) { 612 /* 613 * Set the state for the next pass. 614 */ 615 snprintf(dev_id, sizeof(dev_id), "%s%s/device/device_id", 616 KVP_NET_DIR, entry->d_name); 617 618 file = fopen(dev_id, "r"); 619 if (file == NULL) 620 continue; 621 622 p = fgets(buf, sizeof(buf), file); 623 if (p) { 624 x = strchr(p, '\n'); 625 if (x) 626 *x = '\0'; 627 628 if (!strcmp(p, guid)) { 629 /* 630 * Found the guid match; return the interface 631 * name. The caller will free the memory. 632 */ 633 if_name = strdup(entry->d_name); 634 fclose(file); 635 break; 636 } 637 } 638 fclose(file); 639 } 640 641 closedir(dir); 642 return if_name; 643 } 644 645 /* 646 * Retrieve the MAC address given the interface name. 647 */ 648 649 static char *kvp_if_name_to_mac(char *if_name) 650 { 651 FILE *file; 652 char *p, *x; 653 char buf[256]; 654 char addr_file[PATH_MAX]; 655 unsigned int i; 656 char *mac_addr = NULL; 657 658 snprintf(addr_file, sizeof(addr_file), "%s%s%s", KVP_NET_DIR, 659 if_name, "/address"); 660 661 file = fopen(addr_file, "r"); 662 if (file == NULL) 663 return NULL; 664 665 p = fgets(buf, sizeof(buf), file); 666 if (p) { 667 x = strchr(p, '\n'); 668 if (x) 669 *x = '\0'; 670 for (i = 0; i < strlen(p); i++) 671 p[i] = toupper(p[i]); 672 mac_addr = strdup(p); 673 } 674 675 fclose(file); 676 return mac_addr; 677 } 678 679 680 /* 681 * Retrieve the interface name given tha MAC address. 682 */ 683 684 static char *kvp_mac_to_if_name(char *mac) 685 { 686 DIR *dir; 687 struct dirent *entry; 688 FILE *file; 689 char *p, *x; 690 char *if_name = NULL; 691 char buf[256]; 692 char dev_id[PATH_MAX]; 693 unsigned int i; 694 695 dir = opendir(KVP_NET_DIR); 696 if (dir == NULL) 697 return NULL; 698 699 while ((entry = readdir(dir)) != NULL) { 700 /* 701 * Set the state for the next pass. 702 */ 703 snprintf(dev_id, sizeof(dev_id), "%s%s/address", KVP_NET_DIR, 704 entry->d_name); 705 706 file = fopen(dev_id, "r"); 707 if (file == NULL) 708 continue; 709 710 p = fgets(buf, sizeof(buf), file); 711 if (p) { 712 x = strchr(p, '\n'); 713 if (x) 714 *x = '\0'; 715 716 for (i = 0; i < strlen(p); i++) 717 p[i] = toupper(p[i]); 718 719 if (!strcmp(p, mac)) { 720 /* 721 * Found the MAC match; return the interface 722 * name. The caller will free the memory. 723 */ 724 if_name = strdup(entry->d_name); 725 fclose(file); 726 break; 727 } 728 } 729 fclose(file); 730 } 731 732 closedir(dir); 733 return if_name; 734 } 735 736 737 static void kvp_process_ipconfig_file(char *cmd, 738 char *config_buf, unsigned int len, 739 int element_size, int offset) 740 { 741 char buf[256]; 742 char *p; 743 char *x; 744 FILE *file; 745 746 /* 747 * First execute the command. 748 */ 749 file = popen(cmd, "r"); 750 if (file == NULL) 751 return; 752 753 if (offset == 0) 754 memset(config_buf, 0, len); 755 while ((p = fgets(buf, sizeof(buf), file)) != NULL) { 756 if (len < strlen(config_buf) + element_size + 1) 757 break; 758 759 x = strchr(p, '\n'); 760 if (x) 761 *x = '\0'; 762 763 strcat(config_buf, p); 764 strcat(config_buf, ";"); 765 } 766 pclose(file); 767 } 768 769 static void kvp_get_ipconfig_info(char *if_name, 770 struct hv_kvp_ipaddr_value *buffer) 771 { 772 char cmd[512]; 773 char dhcp_info[128]; 774 char *p; 775 FILE *file; 776 777 /* 778 * Get the address of default gateway (ipv4). 779 */ 780 sprintf(cmd, "%s %s", "ip route show dev", if_name); 781 strcat(cmd, " | awk '/default/ {print $3 }'"); 782 783 /* 784 * Execute the command to gather gateway info. 785 */ 786 kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, 787 (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); 788 789 /* 790 * Get the address of default gateway (ipv6). 791 */ 792 sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); 793 strcat(cmd, " | awk '/default/ {print $3 }'"); 794 795 /* 796 * Execute the command to gather gateway info (ipv6). 797 */ 798 kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, 799 (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); 800 801 802 /* 803 * Gather the DNS state. 804 * Since there is no standard way to get this information 805 * across various distributions of interest; we just invoke 806 * an external script that needs to be ported across distros 807 * of interest. 808 * 809 * Following is the expected format of the information from the script: 810 * 811 * ipaddr1 (nameserver1) 812 * ipaddr2 (nameserver2) 813 * . 814 * . 815 */ 816 817 sprintf(cmd, KVP_SCRIPTS_PATH "%s", "hv_get_dns_info"); 818 819 /* 820 * Execute the command to gather DNS info. 821 */ 822 kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, 823 (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); 824 825 /* 826 * Gather the DHCP state. 827 * We will gather this state by invoking an external script. 828 * The parameter to the script is the interface name. 829 * Here is the expected output: 830 * 831 * Enabled: DHCP enabled. 832 */ 833 834 sprintf(cmd, KVP_SCRIPTS_PATH "%s %s", "hv_get_dhcp_info", if_name); 835 836 file = popen(cmd, "r"); 837 if (file == NULL) 838 return; 839 840 p = fgets(dhcp_info, sizeof(dhcp_info), file); 841 if (p == NULL) { 842 pclose(file); 843 return; 844 } 845 846 if (!strncmp(p, "Enabled", 7)) 847 buffer->dhcp_enabled = 1; 848 else 849 buffer->dhcp_enabled = 0; 850 851 pclose(file); 852 } 853 854 855 static unsigned int hweight32(unsigned int *w) 856 { 857 unsigned int res = *w - ((*w >> 1) & 0x55555555); 858 res = (res & 0x33333333) + ((res >> 2) & 0x33333333); 859 res = (res + (res >> 4)) & 0x0F0F0F0F; 860 res = res + (res >> 8); 861 return (res + (res >> 16)) & 0x000000FF; 862 } 863 864 static int kvp_process_ip_address(void *addrp, 865 int family, char *buffer, 866 int length, int *offset) 867 { 868 struct sockaddr_in *addr; 869 struct sockaddr_in6 *addr6; 870 int addr_length; 871 char tmp[50]; 872 const char *str; 873 874 if (family == AF_INET) { 875 addr = (struct sockaddr_in *)addrp; 876 str = inet_ntop(family, &addr->sin_addr, tmp, 50); 877 addr_length = INET_ADDRSTRLEN; 878 } else { 879 addr6 = (struct sockaddr_in6 *)addrp; 880 str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); 881 addr_length = INET6_ADDRSTRLEN; 882 } 883 884 if ((length - *offset) < addr_length + 2) 885 return HV_E_FAIL; 886 if (str == NULL) { 887 strcpy(buffer, "inet_ntop failed\n"); 888 return HV_E_FAIL; 889 } 890 if (*offset == 0) 891 strcpy(buffer, tmp); 892 else { 893 strcat(buffer, ";"); 894 strcat(buffer, tmp); 895 } 896 897 *offset += strlen(str) + 1; 898 899 return 0; 900 } 901 902 static int 903 kvp_get_ip_info(int family, char *if_name, int op, 904 void *out_buffer, unsigned int length) 905 { 906 struct ifaddrs *ifap; 907 struct ifaddrs *curp; 908 int offset = 0; 909 int sn_offset = 0; 910 int error = 0; 911 char *buffer; 912 struct hv_kvp_ipaddr_value *ip_buffer; 913 char cidr_mask[5]; /* /xyz */ 914 int weight; 915 int i; 916 unsigned int *w; 917 char *sn_str; 918 struct sockaddr_in6 *addr6; 919 920 if (op == KVP_OP_ENUMERATE) { 921 buffer = out_buffer; 922 } else { 923 ip_buffer = out_buffer; 924 buffer = (char *)ip_buffer->ip_addr; 925 ip_buffer->addr_family = 0; 926 } 927 /* 928 * On entry into this function, the buffer is capable of holding the 929 * maximum key value. 930 */ 931 932 if (getifaddrs(&ifap)) { 933 strcpy(buffer, "getifaddrs failed\n"); 934 return HV_E_FAIL; 935 } 936 937 curp = ifap; 938 while (curp != NULL) { 939 if (curp->ifa_addr == NULL) { 940 curp = curp->ifa_next; 941 continue; 942 } 943 944 if ((if_name != NULL) && 945 (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { 946 /* 947 * We want info about a specific interface; 948 * just continue. 949 */ 950 curp = curp->ifa_next; 951 continue; 952 } 953 954 /* 955 * We only support two address families: AF_INET and AF_INET6. 956 * If a family value of 0 is specified, we collect both 957 * supported address families; if not we gather info on 958 * the specified address family. 959 */ 960 if ((((family != 0) && 961 (curp->ifa_addr->sa_family != family))) || 962 (curp->ifa_flags & IFF_LOOPBACK)) { 963 curp = curp->ifa_next; 964 continue; 965 } 966 if ((curp->ifa_addr->sa_family != AF_INET) && 967 (curp->ifa_addr->sa_family != AF_INET6)) { 968 curp = curp->ifa_next; 969 continue; 970 } 971 972 if (op == KVP_OP_GET_IP_INFO) { 973 /* 974 * Gather info other than the IP address. 975 * IP address info will be gathered later. 976 */ 977 if (curp->ifa_addr->sa_family == AF_INET) { 978 ip_buffer->addr_family |= ADDR_FAMILY_IPV4; 979 /* 980 * Get subnet info. 981 */ 982 error = kvp_process_ip_address( 983 curp->ifa_netmask, 984 AF_INET, 985 (char *) 986 ip_buffer->sub_net, 987 length, 988 &sn_offset); 989 if (error) 990 goto gather_ipaddr; 991 } else { 992 ip_buffer->addr_family |= ADDR_FAMILY_IPV6; 993 994 /* 995 * Get subnet info in CIDR format. 996 */ 997 weight = 0; 998 sn_str = (char *)ip_buffer->sub_net; 999 addr6 = (struct sockaddr_in6 *) 1000 curp->ifa_netmask; 1001 w = addr6->sin6_addr.s6_addr32; 1002 1003 for (i = 0; i < 4; i++) 1004 weight += hweight32(&w[i]); 1005 1006 sprintf(cidr_mask, "/%d", weight); 1007 if (length < sn_offset + strlen(cidr_mask) + 1) 1008 goto gather_ipaddr; 1009 1010 if (sn_offset == 0) 1011 strcpy(sn_str, cidr_mask); 1012 else { 1013 strcat((char *)ip_buffer->sub_net, ";"); 1014 strcat(sn_str, cidr_mask); 1015 } 1016 sn_offset += strlen(sn_str) + 1; 1017 } 1018 1019 /* 1020 * Collect other ip related configuration info. 1021 */ 1022 1023 kvp_get_ipconfig_info(if_name, ip_buffer); 1024 } 1025 1026 gather_ipaddr: 1027 error = kvp_process_ip_address(curp->ifa_addr, 1028 curp->ifa_addr->sa_family, 1029 buffer, 1030 length, &offset); 1031 if (error) 1032 goto getaddr_done; 1033 1034 curp = curp->ifa_next; 1035 } 1036 1037 getaddr_done: 1038 freeifaddrs(ifap); 1039 return error; 1040 } 1041 1042 1043 static int expand_ipv6(char *addr, int type) 1044 { 1045 int ret; 1046 struct in6_addr v6_addr; 1047 1048 ret = inet_pton(AF_INET6, addr, &v6_addr); 1049 1050 if (ret != 1) { 1051 if (type == NETMASK) 1052 return 1; 1053 return 0; 1054 } 1055 1056 sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" 1057 "%02x%02x:%02x%02x:%02x%02x", 1058 (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], 1059 (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], 1060 (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], 1061 (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], 1062 (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], 1063 (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], 1064 (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], 1065 (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); 1066 1067 return 1; 1068 1069 } 1070 1071 static int is_ipv4(char *addr) 1072 { 1073 int ret; 1074 struct in_addr ipv4_addr; 1075 1076 ret = inet_pton(AF_INET, addr, &ipv4_addr); 1077 1078 if (ret == 1) 1079 return 1; 1080 return 0; 1081 } 1082 1083 static int parse_ip_val_buffer(char *in_buf, int *offset, 1084 char *out_buf, int out_len) 1085 { 1086 char *x; 1087 char *start; 1088 1089 /* 1090 * in_buf has sequence of characters that are seperated by 1091 * the character ';'. The last sequence does not have the 1092 * terminating ";" character. 1093 */ 1094 start = in_buf + *offset; 1095 1096 x = strchr(start, ';'); 1097 if (x) 1098 *x = 0; 1099 else 1100 x = start + strlen(start); 1101 1102 if (strlen(start) != 0) { 1103 int i = 0; 1104 /* 1105 * Get rid of leading spaces. 1106 */ 1107 while (start[i] == ' ') 1108 i++; 1109 1110 if ((x - start) <= out_len) { 1111 strcpy(out_buf, (start + i)); 1112 *offset += (x - start) + 1; 1113 return 1; 1114 } 1115 } 1116 return 0; 1117 } 1118 1119 static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) 1120 { 1121 int ret; 1122 1123 ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); 1124 1125 if (ret < 0) 1126 return HV_E_FAIL; 1127 1128 return 0; 1129 } 1130 1131 1132 static int process_ip_string(FILE *f, char *ip_string, int type) 1133 { 1134 int error = 0; 1135 char addr[INET6_ADDRSTRLEN]; 1136 int i = 0; 1137 int j = 0; 1138 char str[256]; 1139 char sub_str[13]; 1140 int offset = 0; 1141 1142 memset(addr, 0, sizeof(addr)); 1143 1144 while (parse_ip_val_buffer(ip_string, &offset, addr, 1145 (MAX_IP_ADDR_SIZE * 2))) { 1146 1147 sub_str[0] = 0; 1148 if (is_ipv4(addr)) { 1149 switch (type) { 1150 case IPADDR: 1151 snprintf(str, sizeof(str), "%s", "IPADDR"); 1152 break; 1153 case NETMASK: 1154 snprintf(str, sizeof(str), "%s", "NETMASK"); 1155 break; 1156 case GATEWAY: 1157 snprintf(str, sizeof(str), "%s", "GATEWAY"); 1158 break; 1159 case DNS: 1160 snprintf(str, sizeof(str), "%s", "DNS"); 1161 break; 1162 } 1163 1164 if (type == DNS) { 1165 snprintf(sub_str, sizeof(sub_str), "%d", ++i); 1166 } else if (type == GATEWAY && i == 0) { 1167 ++i; 1168 } else { 1169 snprintf(sub_str, sizeof(sub_str), "%d", i++); 1170 } 1171 1172 1173 } else if (expand_ipv6(addr, type)) { 1174 switch (type) { 1175 case IPADDR: 1176 snprintf(str, sizeof(str), "%s", "IPV6ADDR"); 1177 break; 1178 case NETMASK: 1179 snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); 1180 break; 1181 case GATEWAY: 1182 snprintf(str, sizeof(str), "%s", 1183 "IPV6_DEFAULTGW"); 1184 break; 1185 case DNS: 1186 snprintf(str, sizeof(str), "%s", "DNS"); 1187 break; 1188 } 1189 1190 if (type == DNS) { 1191 snprintf(sub_str, sizeof(sub_str), "%d", ++i); 1192 } else if (j == 0) { 1193 ++j; 1194 } else { 1195 snprintf(sub_str, sizeof(sub_str), "_%d", j++); 1196 } 1197 } else { 1198 return HV_INVALIDARG; 1199 } 1200 1201 error = kvp_write_file(f, str, sub_str, addr); 1202 if (error) 1203 return error; 1204 memset(addr, 0, sizeof(addr)); 1205 } 1206 1207 return 0; 1208 } 1209 1210 static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) 1211 { 1212 int error = 0; 1213 char if_file[PATH_MAX]; 1214 FILE *file; 1215 char cmd[PATH_MAX]; 1216 char *mac_addr; 1217 1218 /* 1219 * Set the configuration for the specified interface with 1220 * the information provided. Since there is no standard 1221 * way to configure an interface, we will have an external 1222 * script that does the job of configuring the interface and 1223 * flushing the configuration. 1224 * 1225 * The parameters passed to this external script are: 1226 * 1. A configuration file that has the specified configuration. 1227 * 1228 * We will embed the name of the interface in the configuration 1229 * file: ifcfg-ethx (where ethx is the interface name). 1230 * 1231 * The information provided here may be more than what is needed 1232 * in a given distro to configure the interface and so are free 1233 * ignore information that may not be relevant. 1234 * 1235 * Here is the format of the ip configuration file: 1236 * 1237 * HWADDR=macaddr 1238 * DEVICE=interface name 1239 * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured 1240 * or "none" if no boot-time protocol should be used) 1241 * 1242 * IPADDR0=ipaddr1 1243 * IPADDR1=ipaddr2 1244 * IPADDRx=ipaddry (where y = x + 1) 1245 * 1246 * NETMASK0=netmask1 1247 * NETMASKx=netmasky (where y = x + 1) 1248 * 1249 * GATEWAY=ipaddr1 1250 * GATEWAYx=ipaddry (where y = x + 1) 1251 * 1252 * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) 1253 * 1254 * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be 1255 * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as 1256 * IPV6NETMASK. 1257 * 1258 * The host can specify multiple ipv4 and ipv6 addresses to be 1259 * configured for the interface. Furthermore, the configuration 1260 * needs to be persistent. A subsequent GET call on the interface 1261 * is expected to return the configuration that is set via the SET 1262 * call. 1263 */ 1264 1265 snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, 1266 "/ifcfg-", if_name); 1267 1268 file = fopen(if_file, "w"); 1269 1270 if (file == NULL) { 1271 syslog(LOG_ERR, "Failed to open config file; error: %d %s", 1272 errno, strerror(errno)); 1273 return HV_E_FAIL; 1274 } 1275 1276 /* 1277 * First write out the MAC address. 1278 */ 1279 1280 mac_addr = kvp_if_name_to_mac(if_name); 1281 if (mac_addr == NULL) { 1282 error = HV_E_FAIL; 1283 goto setval_error; 1284 } 1285 1286 error = kvp_write_file(file, "HWADDR", "", mac_addr); 1287 free(mac_addr); 1288 if (error) 1289 goto setval_error; 1290 1291 error = kvp_write_file(file, "DEVICE", "", if_name); 1292 if (error) 1293 goto setval_error; 1294 1295 /* 1296 * The dhcp_enabled flag is only for IPv4. In the case the host only 1297 * injects an IPv6 address, the flag is true, but we still need to 1298 * proceed to parse and pass the IPv6 information to the 1299 * disto-specific script hv_set_ifconfig. 1300 */ 1301 if (new_val->dhcp_enabled) { 1302 error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); 1303 if (error) 1304 goto setval_error; 1305 1306 } else { 1307 error = kvp_write_file(file, "BOOTPROTO", "", "none"); 1308 if (error) 1309 goto setval_error; 1310 } 1311 1312 /* 1313 * Write the configuration for ipaddress, netmask, gateway and 1314 * name servers. 1315 */ 1316 1317 error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); 1318 if (error) 1319 goto setval_error; 1320 1321 error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); 1322 if (error) 1323 goto setval_error; 1324 1325 error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); 1326 if (error) 1327 goto setval_error; 1328 1329 error = process_ip_string(file, (char *)new_val->dns_addr, DNS); 1330 if (error) 1331 goto setval_error; 1332 1333 fclose(file); 1334 1335 /* 1336 * Now that we have populated the configuration file, 1337 * invoke the external script to do its magic. 1338 */ 1339 1340 snprintf(cmd, sizeof(cmd), KVP_SCRIPTS_PATH "%s %s", 1341 "hv_set_ifconfig", if_file); 1342 if (system(cmd)) { 1343 syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s", 1344 cmd, errno, strerror(errno)); 1345 return HV_E_FAIL; 1346 } 1347 return 0; 1348 1349 setval_error: 1350 syslog(LOG_ERR, "Failed to write config file"); 1351 fclose(file); 1352 return error; 1353 } 1354 1355 1356 static void 1357 kvp_get_domain_name(char *buffer, int length) 1358 { 1359 struct addrinfo hints, *info ; 1360 int error = 0; 1361 1362 gethostname(buffer, length); 1363 memset(&hints, 0, sizeof(hints)); 1364 hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ 1365 hints.ai_socktype = SOCK_STREAM; 1366 hints.ai_flags = AI_CANONNAME; 1367 1368 error = getaddrinfo(buffer, NULL, &hints, &info); 1369 if (error != 0) { 1370 snprintf(buffer, length, "getaddrinfo failed: 0x%x %s", 1371 error, gai_strerror(error)); 1372 return; 1373 } 1374 snprintf(buffer, length, "%s", info->ai_canonname); 1375 freeaddrinfo(info); 1376 } 1377 1378 void print_usage(char *argv[]) 1379 { 1380 fprintf(stderr, "Usage: %s [options]\n" 1381 "Options are:\n" 1382 " -n, --no-daemon stay in foreground, don't daemonize\n" 1383 " -h, --help print this help\n", argv[0]); 1384 } 1385 1386 int main(int argc, char *argv[]) 1387 { 1388 int kvp_fd, len; 1389 int error; 1390 struct pollfd pfd; 1391 char *p; 1392 struct hv_kvp_msg hv_msg[1]; 1393 char *key_value; 1394 char *key_name; 1395 int op; 1396 int pool; 1397 char *if_name; 1398 struct hv_kvp_ipaddr_value *kvp_ip_val; 1399 int daemonize = 1, long_index = 0, opt; 1400 1401 static struct option long_options[] = { 1402 {"help", no_argument, 0, 'h' }, 1403 {"no-daemon", no_argument, 0, 'n' }, 1404 {0, 0, 0, 0 } 1405 }; 1406 1407 while ((opt = getopt_long(argc, argv, "hn", long_options, 1408 &long_index)) != -1) { 1409 switch (opt) { 1410 case 'n': 1411 daemonize = 0; 1412 break; 1413 case 'h': 1414 default: 1415 print_usage(argv); 1416 exit(EXIT_FAILURE); 1417 } 1418 } 1419 1420 if (daemonize && daemon(1, 0)) 1421 return 1; 1422 1423 openlog("KVP", 0, LOG_USER); 1424 syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); 1425 1426 kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC); 1427 1428 if (kvp_fd < 0) { 1429 syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s", 1430 errno, strerror(errno)); 1431 exit(EXIT_FAILURE); 1432 } 1433 1434 /* 1435 * Retrieve OS release information. 1436 */ 1437 kvp_get_os_info(); 1438 /* 1439 * Cache Fully Qualified Domain Name because getaddrinfo takes an 1440 * unpredictable amount of time to finish. 1441 */ 1442 kvp_get_domain_name(full_domain_name, sizeof(full_domain_name)); 1443 1444 if (kvp_file_init()) { 1445 syslog(LOG_ERR, "Failed to initialize the pools"); 1446 exit(EXIT_FAILURE); 1447 } 1448 1449 /* 1450 * Register ourselves with the kernel. 1451 */ 1452 hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; 1453 len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); 1454 if (len != sizeof(struct hv_kvp_msg)) { 1455 syslog(LOG_ERR, "registration to kernel failed; error: %d %s", 1456 errno, strerror(errno)); 1457 close(kvp_fd); 1458 exit(EXIT_FAILURE); 1459 } 1460 1461 pfd.fd = kvp_fd; 1462 1463 while (1) { 1464 pfd.events = POLLIN; 1465 pfd.revents = 0; 1466 1467 if (poll(&pfd, 1, -1) < 0) { 1468 syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno)); 1469 if (errno == EINVAL) { 1470 close(kvp_fd); 1471 exit(EXIT_FAILURE); 1472 } 1473 else 1474 continue; 1475 } 1476 1477 len = read(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); 1478 1479 if (len != sizeof(struct hv_kvp_msg)) { 1480 syslog(LOG_ERR, "read failed; error:%d %s", 1481 errno, strerror(errno)); 1482 1483 close(kvp_fd); 1484 return EXIT_FAILURE; 1485 } 1486 1487 /* 1488 * We will use the KVP header information to pass back 1489 * the error from this daemon. So, first copy the state 1490 * and set the error code to success. 1491 */ 1492 op = hv_msg->kvp_hdr.operation; 1493 pool = hv_msg->kvp_hdr.pool; 1494 hv_msg->error = HV_S_OK; 1495 1496 if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { 1497 /* 1498 * Driver is registering with us; stash away the version 1499 * information. 1500 */ 1501 in_hand_shake = 0; 1502 p = (char *)hv_msg->body.kvp_register.version; 1503 lic_version = malloc(strlen(p) + 1); 1504 if (lic_version) { 1505 strcpy(lic_version, p); 1506 syslog(LOG_INFO, "KVP LIC Version: %s", 1507 lic_version); 1508 } else { 1509 syslog(LOG_ERR, "malloc failed"); 1510 } 1511 continue; 1512 } 1513 1514 switch (op) { 1515 case KVP_OP_GET_IP_INFO: 1516 kvp_ip_val = &hv_msg->body.kvp_ip_val; 1517 if_name = 1518 kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); 1519 1520 if (if_name == NULL) { 1521 /* 1522 * We could not map the mac address to an 1523 * interface name; return error. 1524 */ 1525 hv_msg->error = HV_E_FAIL; 1526 break; 1527 } 1528 error = kvp_get_ip_info( 1529 0, if_name, KVP_OP_GET_IP_INFO, 1530 kvp_ip_val, 1531 (MAX_IP_ADDR_SIZE * 2)); 1532 1533 if (error) 1534 hv_msg->error = error; 1535 1536 free(if_name); 1537 break; 1538 1539 case KVP_OP_SET_IP_INFO: 1540 kvp_ip_val = &hv_msg->body.kvp_ip_val; 1541 if_name = kvp_get_if_name( 1542 (char *)kvp_ip_val->adapter_id); 1543 if (if_name == NULL) { 1544 /* 1545 * We could not map the guid to an 1546 * interface name; return error. 1547 */ 1548 hv_msg->error = HV_GUID_NOTFOUND; 1549 break; 1550 } 1551 error = kvp_set_ip_info(if_name, kvp_ip_val); 1552 if (error) 1553 hv_msg->error = error; 1554 1555 free(if_name); 1556 break; 1557 1558 case KVP_OP_SET: 1559 if (kvp_key_add_or_modify(pool, 1560 hv_msg->body.kvp_set.data.key, 1561 hv_msg->body.kvp_set.data.key_size, 1562 hv_msg->body.kvp_set.data.value, 1563 hv_msg->body.kvp_set.data.value_size)) 1564 hv_msg->error = HV_S_CONT; 1565 break; 1566 1567 case KVP_OP_GET: 1568 if (kvp_get_value(pool, 1569 hv_msg->body.kvp_set.data.key, 1570 hv_msg->body.kvp_set.data.key_size, 1571 hv_msg->body.kvp_set.data.value, 1572 hv_msg->body.kvp_set.data.value_size)) 1573 hv_msg->error = HV_S_CONT; 1574 break; 1575 1576 case KVP_OP_DELETE: 1577 if (kvp_key_delete(pool, 1578 hv_msg->body.kvp_delete.key, 1579 hv_msg->body.kvp_delete.key_size)) 1580 hv_msg->error = HV_S_CONT; 1581 break; 1582 1583 default: 1584 break; 1585 } 1586 1587 if (op != KVP_OP_ENUMERATE) 1588 goto kvp_done; 1589 1590 /* 1591 * If the pool is KVP_POOL_AUTO, dynamically generate 1592 * both the key and the value; if not read from the 1593 * appropriate pool. 1594 */ 1595 if (pool != KVP_POOL_AUTO) { 1596 if (kvp_pool_enumerate(pool, 1597 hv_msg->body.kvp_enum_data.index, 1598 hv_msg->body.kvp_enum_data.data.key, 1599 HV_KVP_EXCHANGE_MAX_KEY_SIZE, 1600 hv_msg->body.kvp_enum_data.data.value, 1601 HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) 1602 hv_msg->error = HV_S_CONT; 1603 goto kvp_done; 1604 } 1605 1606 key_name = (char *)hv_msg->body.kvp_enum_data.data.key; 1607 key_value = (char *)hv_msg->body.kvp_enum_data.data.value; 1608 1609 switch (hv_msg->body.kvp_enum_data.index) { 1610 case FullyQualifiedDomainName: 1611 strcpy(key_value, full_domain_name); 1612 strcpy(key_name, "FullyQualifiedDomainName"); 1613 break; 1614 case IntegrationServicesVersion: 1615 strcpy(key_name, "IntegrationServicesVersion"); 1616 strcpy(key_value, lic_version); 1617 break; 1618 case NetworkAddressIPv4: 1619 kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, 1620 key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); 1621 strcpy(key_name, "NetworkAddressIPv4"); 1622 break; 1623 case NetworkAddressIPv6: 1624 kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, 1625 key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); 1626 strcpy(key_name, "NetworkAddressIPv6"); 1627 break; 1628 case OSBuildNumber: 1629 strcpy(key_value, os_build); 1630 strcpy(key_name, "OSBuildNumber"); 1631 break; 1632 case OSName: 1633 strcpy(key_value, os_name); 1634 strcpy(key_name, "OSName"); 1635 break; 1636 case OSMajorVersion: 1637 strcpy(key_value, os_major); 1638 strcpy(key_name, "OSMajorVersion"); 1639 break; 1640 case OSMinorVersion: 1641 strcpy(key_value, os_minor); 1642 strcpy(key_name, "OSMinorVersion"); 1643 break; 1644 case OSVersion: 1645 strcpy(key_value, os_version); 1646 strcpy(key_name, "OSVersion"); 1647 break; 1648 case ProcessorArchitecture: 1649 strcpy(key_value, processor_arch); 1650 strcpy(key_name, "ProcessorArchitecture"); 1651 break; 1652 default: 1653 hv_msg->error = HV_S_CONT; 1654 break; 1655 } 1656 1657 /* Send the value back to the kernel. */ 1658 kvp_done: 1659 len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); 1660 if (len != sizeof(struct hv_kvp_msg)) { 1661 syslog(LOG_ERR, "write failed; error: %d %s", errno, 1662 strerror(errno)); 1663 exit(EXIT_FAILURE); 1664 } 1665 } 1666 1667 close(kvp_fd); 1668 exit(0); 1669 } 1670