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