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Merge tag 'drm/tegra/for-3.20-rc1-fixes' of git://anongit.freedesktop.org/tegra/linux...
[deliverable/linux.git] / tools / hv / hv_kvp_daemon.c
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/types.h>
26 #include <sys/socket.h>
27 #include <sys/poll.h>
28 #include <sys/utsname.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 #include <string.h>
33 #include <ctype.h>
34 #include <errno.h>
35 #include <arpa/inet.h>
36 #include <linux/connector.h>
37 #include <linux/hyperv.h>
38 #include <linux/netlink.h>
39 #include <ifaddrs.h>
40 #include <netdb.h>
41 #include <syslog.h>
42 #include <sys/stat.h>
43 #include <fcntl.h>
44 #include <dirent.h>
45 #include <net/if.h>
46 #include <getopt.h>
47
48 /*
49 * KVP protocol: The user mode component first registers with the
50 * the kernel component. Subsequently, the kernel component requests, data
51 * for the specified keys. In response to this message the user mode component
52 * fills in the value corresponding to the specified key. We overload the
53 * sequence field in the cn_msg header to define our KVP message types.
54 *
55 * We use this infrastructure for also supporting queries from user mode
56 * application for state that may be maintained in the KVP kernel component.
57 *
58 */
59
60
61 enum key_index {
62 FullyQualifiedDomainName = 0,
63 IntegrationServicesVersion, /*This key is serviced in the kernel*/
64 NetworkAddressIPv4,
65 NetworkAddressIPv6,
66 OSBuildNumber,
67 OSName,
68 OSMajorVersion,
69 OSMinorVersion,
70 OSVersion,
71 ProcessorArchitecture
72 };
73
74
75 enum {
76 IPADDR = 0,
77 NETMASK,
78 GATEWAY,
79 DNS
80 };
81
82 static struct sockaddr_nl addr;
83 static int in_hand_shake = 1;
84
85 static char *os_name = "";
86 static char *os_major = "";
87 static char *os_minor = "";
88 static char *processor_arch;
89 static char *os_build;
90 static char *os_version;
91 static char *lic_version = "Unknown version";
92 static char full_domain_name[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
93 static struct utsname uts_buf;
94
95 /*
96 * The location of the interface configuration file.
97 */
98
99 #define KVP_CONFIG_LOC "/var/lib/hyperv"
100
101 #define MAX_FILE_NAME 100
102 #define ENTRIES_PER_BLOCK 50
103
104 #ifndef SOL_NETLINK
105 #define SOL_NETLINK 270
106 #endif
107
108 struct kvp_record {
109 char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
110 char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
111 };
112
113 struct kvp_file_state {
114 int fd;
115 int num_blocks;
116 struct kvp_record *records;
117 int num_records;
118 char fname[MAX_FILE_NAME];
119 };
120
121 static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT];
122
123 static void kvp_acquire_lock(int pool)
124 {
125 struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0};
126 fl.l_pid = getpid();
127
128 if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) {
129 syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool,
130 errno, strerror(errno));
131 exit(EXIT_FAILURE);
132 }
133 }
134
135 static void kvp_release_lock(int pool)
136 {
137 struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0};
138 fl.l_pid = getpid();
139
140 if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) {
141 syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool,
142 errno, strerror(errno));
143 exit(EXIT_FAILURE);
144 }
145 }
146
147 static void kvp_update_file(int pool)
148 {
149 FILE *filep;
150
151 /*
152 * We are going to write our in-memory registry out to
153 * disk; acquire the lock first.
154 */
155 kvp_acquire_lock(pool);
156
157 filep = fopen(kvp_file_info[pool].fname, "we");
158 if (!filep) {
159 syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool,
160 errno, strerror(errno));
161 kvp_release_lock(pool);
162 exit(EXIT_FAILURE);
163 }
164
165 fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record),
166 kvp_file_info[pool].num_records, filep);
167
168 if (ferror(filep) || fclose(filep)) {
169 kvp_release_lock(pool);
170 syslog(LOG_ERR, "Failed to write file, pool: %d", pool);
171 exit(EXIT_FAILURE);
172 }
173
174 kvp_release_lock(pool);
175 }
176
177 static void kvp_update_mem_state(int pool)
178 {
179 FILE *filep;
180 size_t records_read = 0;
181 struct kvp_record *record = kvp_file_info[pool].records;
182 struct kvp_record *readp;
183 int num_blocks = kvp_file_info[pool].num_blocks;
184 int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK;
185
186 kvp_acquire_lock(pool);
187
188 filep = fopen(kvp_file_info[pool].fname, "re");
189 if (!filep) {
190 syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool,
191 errno, strerror(errno));
192 kvp_release_lock(pool);
193 exit(EXIT_FAILURE);
194 }
195 for (;;) {
196 readp = &record[records_read];
197 records_read += fread(readp, sizeof(struct kvp_record),
198 ENTRIES_PER_BLOCK * num_blocks,
199 filep);
200
201 if (ferror(filep)) {
202 syslog(LOG_ERR, "Failed to read file, pool: %d", pool);
203 exit(EXIT_FAILURE);
204 }
205
206 if (!feof(filep)) {
207 /*
208 * We have more data to read.
209 */
210 num_blocks++;
211 record = realloc(record, alloc_unit * num_blocks);
212
213 if (record == NULL) {
214 syslog(LOG_ERR, "malloc failed");
215 exit(EXIT_FAILURE);
216 }
217 continue;
218 }
219 break;
220 }
221
222 kvp_file_info[pool].num_blocks = num_blocks;
223 kvp_file_info[pool].records = record;
224 kvp_file_info[pool].num_records = records_read;
225
226 fclose(filep);
227 kvp_release_lock(pool);
228 }
229 static int kvp_file_init(void)
230 {
231 int fd;
232 FILE *filep;
233 size_t records_read;
234 char *fname;
235 struct kvp_record *record;
236 struct kvp_record *readp;
237 int num_blocks;
238 int i;
239 int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK;
240
241 if (access(KVP_CONFIG_LOC, F_OK)) {
242 if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) {
243 syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC,
244 errno, strerror(errno));
245 exit(EXIT_FAILURE);
246 }
247 }
248
249 for (i = 0; i < KVP_POOL_COUNT; i++) {
250 fname = kvp_file_info[i].fname;
251 records_read = 0;
252 num_blocks = 1;
253 sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i);
254 fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */);
255
256 if (fd == -1)
257 return 1;
258
259
260 filep = fopen(fname, "re");
261 if (!filep) {
262 close(fd);
263 return 1;
264 }
265
266 record = malloc(alloc_unit * num_blocks);
267 if (record == NULL) {
268 fclose(filep);
269 close(fd);
270 return 1;
271 }
272 for (;;) {
273 readp = &record[records_read];
274 records_read += fread(readp, sizeof(struct kvp_record),
275 ENTRIES_PER_BLOCK,
276 filep);
277
278 if (ferror(filep)) {
279 syslog(LOG_ERR, "Failed to read file, pool: %d",
280 i);
281 exit(EXIT_FAILURE);
282 }
283
284 if (!feof(filep)) {
285 /*
286 * We have more data to read.
287 */
288 num_blocks++;
289 record = realloc(record, alloc_unit *
290 num_blocks);
291 if (record == NULL) {
292 fclose(filep);
293 close(fd);
294 return 1;
295 }
296 continue;
297 }
298 break;
299 }
300 kvp_file_info[i].fd = fd;
301 kvp_file_info[i].num_blocks = num_blocks;
302 kvp_file_info[i].records = record;
303 kvp_file_info[i].num_records = records_read;
304 fclose(filep);
305
306 }
307
308 return 0;
309 }
310
311 static int kvp_key_delete(int pool, const __u8 *key, int key_size)
312 {
313 int i;
314 int j, k;
315 int num_records;
316 struct kvp_record *record;
317
318 /*
319 * First update the in-memory state.
320 */
321 kvp_update_mem_state(pool);
322
323 num_records = kvp_file_info[pool].num_records;
324 record = kvp_file_info[pool].records;
325
326 for (i = 0; i < num_records; i++) {
327 if (memcmp(key, record[i].key, key_size))
328 continue;
329 /*
330 * Found a match; just move the remaining
331 * entries up.
332 */
333 if (i == num_records) {
334 kvp_file_info[pool].num_records--;
335 kvp_update_file(pool);
336 return 0;
337 }
338
339 j = i;
340 k = j + 1;
341 for (; k < num_records; k++) {
342 strcpy(record[j].key, record[k].key);
343 strcpy(record[j].value, record[k].value);
344 j++;
345 }
346
347 kvp_file_info[pool].num_records--;
348 kvp_update_file(pool);
349 return 0;
350 }
351 return 1;
352 }
353
354 static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size,
355 const __u8 *value, int value_size)
356 {
357 int i;
358 int num_records;
359 struct kvp_record *record;
360 int num_blocks;
361
362 if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) ||
363 (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE))
364 return 1;
365
366 /*
367 * First update the in-memory state.
368 */
369 kvp_update_mem_state(pool);
370
371 num_records = kvp_file_info[pool].num_records;
372 record = kvp_file_info[pool].records;
373 num_blocks = kvp_file_info[pool].num_blocks;
374
375 for (i = 0; i < num_records; i++) {
376 if (memcmp(key, record[i].key, key_size))
377 continue;
378 /*
379 * Found a match; just update the value -
380 * this is the modify case.
381 */
382 memcpy(record[i].value, value, value_size);
383 kvp_update_file(pool);
384 return 0;
385 }
386
387 /*
388 * Need to add a new entry;
389 */
390 if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) {
391 /* Need to allocate a larger array for reg entries. */
392 record = realloc(record, sizeof(struct kvp_record) *
393 ENTRIES_PER_BLOCK * (num_blocks + 1));
394
395 if (record == NULL)
396 return 1;
397 kvp_file_info[pool].num_blocks++;
398
399 }
400 memcpy(record[i].value, value, value_size);
401 memcpy(record[i].key, key, key_size);
402 kvp_file_info[pool].records = record;
403 kvp_file_info[pool].num_records++;
404 kvp_update_file(pool);
405 return 0;
406 }
407
408 static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value,
409 int value_size)
410 {
411 int i;
412 int num_records;
413 struct kvp_record *record;
414
415 if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) ||
416 (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE))
417 return 1;
418
419 /*
420 * First update the in-memory state.
421 */
422 kvp_update_mem_state(pool);
423
424 num_records = kvp_file_info[pool].num_records;
425 record = kvp_file_info[pool].records;
426
427 for (i = 0; i < num_records; i++) {
428 if (memcmp(key, record[i].key, key_size))
429 continue;
430 /*
431 * Found a match; just copy the value out.
432 */
433 memcpy(value, record[i].value, value_size);
434 return 0;
435 }
436
437 return 1;
438 }
439
440 static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size,
441 __u8 *value, int value_size)
442 {
443 struct kvp_record *record;
444
445 /*
446 * First update our in-memory database.
447 */
448 kvp_update_mem_state(pool);
449 record = kvp_file_info[pool].records;
450
451 if (index >= kvp_file_info[pool].num_records) {
452 return 1;
453 }
454
455 memcpy(key, record[index].key, key_size);
456 memcpy(value, record[index].value, value_size);
457 return 0;
458 }
459
460
461 void kvp_get_os_info(void)
462 {
463 FILE *file;
464 char *p, buf[512];
465
466 uname(&uts_buf);
467 os_version = uts_buf.release;
468 os_build = strdup(uts_buf.release);
469
470 os_name = uts_buf.sysname;
471 processor_arch = uts_buf.machine;
472
473 /*
474 * The current windows host (win7) expects the build
475 * string to be of the form: x.y.z
476 * Strip additional information we may have.
477 */
478 p = strchr(os_version, '-');
479 if (p)
480 *p = '\0';
481
482 /*
483 * Parse the /etc/os-release file if present:
484 * http://www.freedesktop.org/software/systemd/man/os-release.html
485 */
486 file = fopen("/etc/os-release", "r");
487 if (file != NULL) {
488 while (fgets(buf, sizeof(buf), file)) {
489 char *value, *q;
490
491 /* Ignore comments */
492 if (buf[0] == '#')
493 continue;
494
495 /* Split into name=value */
496 p = strchr(buf, '=');
497 if (!p)
498 continue;
499 *p++ = 0;
500
501 /* Remove quotes and newline; un-escape */
502 value = p;
503 q = p;
504 while (*p) {
505 if (*p == '\\') {
506 ++p;
507 if (!*p)
508 break;
509 *q++ = *p++;
510 } else if (*p == '\'' || *p == '"' ||
511 *p == '\n') {
512 ++p;
513 } else {
514 *q++ = *p++;
515 }
516 }
517 *q = 0;
518
519 if (!strcmp(buf, "NAME")) {
520 p = strdup(value);
521 if (!p)
522 break;
523 os_name = p;
524 } else if (!strcmp(buf, "VERSION_ID")) {
525 p = strdup(value);
526 if (!p)
527 break;
528 os_major = p;
529 }
530 }
531 fclose(file);
532 return;
533 }
534
535 /* Fallback for older RH/SUSE releases */
536 file = fopen("/etc/SuSE-release", "r");
537 if (file != NULL)
538 goto kvp_osinfo_found;
539 file = fopen("/etc/redhat-release", "r");
540 if (file != NULL)
541 goto kvp_osinfo_found;
542
543 /*
544 * We don't have information about the os.
545 */
546 return;
547
548 kvp_osinfo_found:
549 /* up to three lines */
550 p = fgets(buf, sizeof(buf), file);
551 if (p) {
552 p = strchr(buf, '\n');
553 if (p)
554 *p = '\0';
555 p = strdup(buf);
556 if (!p)
557 goto done;
558 os_name = p;
559
560 /* second line */
561 p = fgets(buf, sizeof(buf), file);
562 if (p) {
563 p = strchr(buf, '\n');
564 if (p)
565 *p = '\0';
566 p = strdup(buf);
567 if (!p)
568 goto done;
569 os_major = p;
570
571 /* third line */
572 p = fgets(buf, sizeof(buf), file);
573 if (p) {
574 p = strchr(buf, '\n');
575 if (p)
576 *p = '\0';
577 p = strdup(buf);
578 if (p)
579 os_minor = p;
580 }
581 }
582 }
583
584 done:
585 fclose(file);
586 return;
587 }
588
589
590
591 /*
592 * Retrieve an interface name corresponding to the specified guid.
593 * If there is a match, the function returns a pointer
594 * to the interface name and if not, a NULL is returned.
595 * If a match is found, the caller is responsible for
596 * freeing the memory.
597 */
598
599 static char *kvp_get_if_name(char *guid)
600 {
601 DIR *dir;
602 struct dirent *entry;
603 FILE *file;
604 char *p, *q, *x;
605 char *if_name = NULL;
606 char buf[256];
607 char *kvp_net_dir = "/sys/class/net/";
608 char dev_id[256];
609
610 dir = opendir(kvp_net_dir);
611 if (dir == NULL)
612 return NULL;
613
614 snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir);
615 q = dev_id + strlen(kvp_net_dir);
616
617 while ((entry = readdir(dir)) != NULL) {
618 /*
619 * Set the state for the next pass.
620 */
621 *q = '\0';
622 strcat(dev_id, entry->d_name);
623 strcat(dev_id, "/device/device_id");
624
625 file = fopen(dev_id, "r");
626 if (file == NULL)
627 continue;
628
629 p = fgets(buf, sizeof(buf), file);
630 if (p) {
631 x = strchr(p, '\n');
632 if (x)
633 *x = '\0';
634
635 if (!strcmp(p, guid)) {
636 /*
637 * Found the guid match; return the interface
638 * name. The caller will free the memory.
639 */
640 if_name = strdup(entry->d_name);
641 fclose(file);
642 break;
643 }
644 }
645 fclose(file);
646 }
647
648 closedir(dir);
649 return if_name;
650 }
651
652 /*
653 * Retrieve the MAC address given the interface name.
654 */
655
656 static char *kvp_if_name_to_mac(char *if_name)
657 {
658 FILE *file;
659 char *p, *x;
660 char buf[256];
661 char addr_file[256];
662 unsigned int i;
663 char *mac_addr = NULL;
664
665 snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/",
666 if_name, "/address");
667
668 file = fopen(addr_file, "r");
669 if (file == NULL)
670 return NULL;
671
672 p = fgets(buf, sizeof(buf), file);
673 if (p) {
674 x = strchr(p, '\n');
675 if (x)
676 *x = '\0';
677 for (i = 0; i < strlen(p); i++)
678 p[i] = toupper(p[i]);
679 mac_addr = strdup(p);
680 }
681
682 fclose(file);
683 return mac_addr;
684 }
685
686
687 /*
688 * Retrieve the interface name given tha MAC address.
689 */
690
691 static char *kvp_mac_to_if_name(char *mac)
692 {
693 DIR *dir;
694 struct dirent *entry;
695 FILE *file;
696 char *p, *q, *x;
697 char *if_name = NULL;
698 char buf[256];
699 char *kvp_net_dir = "/sys/class/net/";
700 char dev_id[256];
701 unsigned int i;
702
703 dir = opendir(kvp_net_dir);
704 if (dir == NULL)
705 return NULL;
706
707 snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
708 q = dev_id + strlen(kvp_net_dir);
709
710 while ((entry = readdir(dir)) != NULL) {
711 /*
712 * Set the state for the next pass.
713 */
714 *q = '\0';
715
716 strcat(dev_id, entry->d_name);
717 strcat(dev_id, "/address");
718
719 file = fopen(dev_id, "r");
720 if (file == NULL)
721 continue;
722
723 p = fgets(buf, sizeof(buf), file);
724 if (p) {
725 x = strchr(p, '\n');
726 if (x)
727 *x = '\0';
728
729 for (i = 0; i < strlen(p); i++)
730 p[i] = toupper(p[i]);
731
732 if (!strcmp(p, mac)) {
733 /*
734 * Found the MAC match; return the interface
735 * name. The caller will free the memory.
736 */
737 if_name = strdup(entry->d_name);
738 fclose(file);
739 break;
740 }
741 }
742 fclose(file);
743 }
744
745 closedir(dir);
746 return if_name;
747 }
748
749
750 static void kvp_process_ipconfig_file(char *cmd,
751 char *config_buf, unsigned int len,
752 int element_size, int offset)
753 {
754 char buf[256];
755 char *p;
756 char *x;
757 FILE *file;
758
759 /*
760 * First execute the command.
761 */
762 file = popen(cmd, "r");
763 if (file == NULL)
764 return;
765
766 if (offset == 0)
767 memset(config_buf, 0, len);
768 while ((p = fgets(buf, sizeof(buf), file)) != NULL) {
769 if (len < strlen(config_buf) + element_size + 1)
770 break;
771
772 x = strchr(p, '\n');
773 if (x)
774 *x = '\0';
775
776 strcat(config_buf, p);
777 strcat(config_buf, ";");
778 }
779 pclose(file);
780 }
781
782 static void kvp_get_ipconfig_info(char *if_name,
783 struct hv_kvp_ipaddr_value *buffer)
784 {
785 char cmd[512];
786 char dhcp_info[128];
787 char *p;
788 FILE *file;
789
790 /*
791 * Get the address of default gateway (ipv4).
792 */
793 sprintf(cmd, "%s %s", "ip route show dev", if_name);
794 strcat(cmd, " | awk '/default/ {print $3 }'");
795
796 /*
797 * Execute the command to gather gateway info.
798 */
799 kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
800 (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0);
801
802 /*
803 * Get the address of default gateway (ipv6).
804 */
805 sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name);
806 strcat(cmd, " | awk '/default/ {print $3 }'");
807
808 /*
809 * Execute the command to gather gateway info (ipv6).
810 */
811 kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
812 (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1);
813
814
815 /*
816 * Gather the DNS state.
817 * Since there is no standard way to get this information
818 * across various distributions of interest; we just invoke
819 * an external script that needs to be ported across distros
820 * of interest.
821 *
822 * Following is the expected format of the information from the script:
823 *
824 * ipaddr1 (nameserver1)
825 * ipaddr2 (nameserver2)
826 * .
827 * .
828 */
829
830 sprintf(cmd, "%s", "hv_get_dns_info");
831
832 /*
833 * Execute the command to gather DNS info.
834 */
835 kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr,
836 (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0);
837
838 /*
839 * Gather the DHCP state.
840 * We will gather this state by invoking an external script.
841 * The parameter to the script is the interface name.
842 * Here is the expected output:
843 *
844 * Enabled: DHCP enabled.
845 */
846
847 sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name);
848
849 file = popen(cmd, "r");
850 if (file == NULL)
851 return;
852
853 p = fgets(dhcp_info, sizeof(dhcp_info), file);
854 if (p == NULL) {
855 pclose(file);
856 return;
857 }
858
859 if (!strncmp(p, "Enabled", 7))
860 buffer->dhcp_enabled = 1;
861 else
862 buffer->dhcp_enabled = 0;
863
864 pclose(file);
865 }
866
867
868 static unsigned int hweight32(unsigned int *w)
869 {
870 unsigned int res = *w - ((*w >> 1) & 0x55555555);
871 res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
872 res = (res + (res >> 4)) & 0x0F0F0F0F;
873 res = res + (res >> 8);
874 return (res + (res >> 16)) & 0x000000FF;
875 }
876
877 static int kvp_process_ip_address(void *addrp,
878 int family, char *buffer,
879 int length, int *offset)
880 {
881 struct sockaddr_in *addr;
882 struct sockaddr_in6 *addr6;
883 int addr_length;
884 char tmp[50];
885 const char *str;
886
887 if (family == AF_INET) {
888 addr = (struct sockaddr_in *)addrp;
889 str = inet_ntop(family, &addr->sin_addr, tmp, 50);
890 addr_length = INET_ADDRSTRLEN;
891 } else {
892 addr6 = (struct sockaddr_in6 *)addrp;
893 str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50);
894 addr_length = INET6_ADDRSTRLEN;
895 }
896
897 if ((length - *offset) < addr_length + 2)
898 return HV_E_FAIL;
899 if (str == NULL) {
900 strcpy(buffer, "inet_ntop failed\n");
901 return HV_E_FAIL;
902 }
903 if (*offset == 0)
904 strcpy(buffer, tmp);
905 else {
906 strcat(buffer, ";");
907 strcat(buffer, tmp);
908 }
909
910 *offset += strlen(str) + 1;
911
912 return 0;
913 }
914
915 static int
916 kvp_get_ip_info(int family, char *if_name, int op,
917 void *out_buffer, unsigned int length)
918 {
919 struct ifaddrs *ifap;
920 struct ifaddrs *curp;
921 int offset = 0;
922 int sn_offset = 0;
923 int error = 0;
924 char *buffer;
925 struct hv_kvp_ipaddr_value *ip_buffer;
926 char cidr_mask[5]; /* /xyz */
927 int weight;
928 int i;
929 unsigned int *w;
930 char *sn_str;
931 struct sockaddr_in6 *addr6;
932
933 if (op == KVP_OP_ENUMERATE) {
934 buffer = out_buffer;
935 } else {
936 ip_buffer = out_buffer;
937 buffer = (char *)ip_buffer->ip_addr;
938 ip_buffer->addr_family = 0;
939 }
940 /*
941 * On entry into this function, the buffer is capable of holding the
942 * maximum key value.
943 */
944
945 if (getifaddrs(&ifap)) {
946 strcpy(buffer, "getifaddrs failed\n");
947 return HV_E_FAIL;
948 }
949
950 curp = ifap;
951 while (curp != NULL) {
952 if (curp->ifa_addr == NULL) {
953 curp = curp->ifa_next;
954 continue;
955 }
956
957 if ((if_name != NULL) &&
958 (strncmp(curp->ifa_name, if_name, strlen(if_name)))) {
959 /*
960 * We want info about a specific interface;
961 * just continue.
962 */
963 curp = curp->ifa_next;
964 continue;
965 }
966
967 /*
968 * We only support two address families: AF_INET and AF_INET6.
969 * If a family value of 0 is specified, we collect both
970 * supported address families; if not we gather info on
971 * the specified address family.
972 */
973 if ((((family != 0) &&
974 (curp->ifa_addr->sa_family != family))) ||
975 (curp->ifa_flags & IFF_LOOPBACK)) {
976 curp = curp->ifa_next;
977 continue;
978 }
979 if ((curp->ifa_addr->sa_family != AF_INET) &&
980 (curp->ifa_addr->sa_family != AF_INET6)) {
981 curp = curp->ifa_next;
982 continue;
983 }
984
985 if (op == KVP_OP_GET_IP_INFO) {
986 /*
987 * Gather info other than the IP address.
988 * IP address info will be gathered later.
989 */
990 if (curp->ifa_addr->sa_family == AF_INET) {
991 ip_buffer->addr_family |= ADDR_FAMILY_IPV4;
992 /*
993 * Get subnet info.
994 */
995 error = kvp_process_ip_address(
996 curp->ifa_netmask,
997 AF_INET,
998 (char *)
999 ip_buffer->sub_net,
1000 length,
1001 &sn_offset);
1002 if (error)
1003 goto gather_ipaddr;
1004 } else {
1005 ip_buffer->addr_family |= ADDR_FAMILY_IPV6;
1006
1007 /*
1008 * Get subnet info in CIDR format.
1009 */
1010 weight = 0;
1011 sn_str = (char *)ip_buffer->sub_net;
1012 addr6 = (struct sockaddr_in6 *)
1013 curp->ifa_netmask;
1014 w = addr6->sin6_addr.s6_addr32;
1015
1016 for (i = 0; i < 4; i++)
1017 weight += hweight32(&w[i]);
1018
1019 sprintf(cidr_mask, "/%d", weight);
1020 if (length < sn_offset + strlen(cidr_mask) + 1)
1021 goto gather_ipaddr;
1022
1023 if (sn_offset == 0)
1024 strcpy(sn_str, cidr_mask);
1025 else {
1026 strcat((char *)ip_buffer->sub_net, ";");
1027 strcat(sn_str, cidr_mask);
1028 }
1029 sn_offset += strlen(sn_str) + 1;
1030 }
1031
1032 /*
1033 * Collect other ip related configuration info.
1034 */
1035
1036 kvp_get_ipconfig_info(if_name, ip_buffer);
1037 }
1038
1039 gather_ipaddr:
1040 error = kvp_process_ip_address(curp->ifa_addr,
1041 curp->ifa_addr->sa_family,
1042 buffer,
1043 length, &offset);
1044 if (error)
1045 goto getaddr_done;
1046
1047 curp = curp->ifa_next;
1048 }
1049
1050 getaddr_done:
1051 freeifaddrs(ifap);
1052 return error;
1053 }
1054
1055
1056 static int expand_ipv6(char *addr, int type)
1057 {
1058 int ret;
1059 struct in6_addr v6_addr;
1060
1061 ret = inet_pton(AF_INET6, addr, &v6_addr);
1062
1063 if (ret != 1) {
1064 if (type == NETMASK)
1065 return 1;
1066 return 0;
1067 }
1068
1069 sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
1070 "%02x%02x:%02x%02x:%02x%02x",
1071 (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1],
1072 (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3],
1073 (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5],
1074 (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7],
1075 (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9],
1076 (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11],
1077 (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13],
1078 (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]);
1079
1080 return 1;
1081
1082 }
1083
1084 static int is_ipv4(char *addr)
1085 {
1086 int ret;
1087 struct in_addr ipv4_addr;
1088
1089 ret = inet_pton(AF_INET, addr, &ipv4_addr);
1090
1091 if (ret == 1)
1092 return 1;
1093 return 0;
1094 }
1095
1096 static int parse_ip_val_buffer(char *in_buf, int *offset,
1097 char *out_buf, int out_len)
1098 {
1099 char *x;
1100 char *start;
1101
1102 /*
1103 * in_buf has sequence of characters that are seperated by
1104 * the character ';'. The last sequence does not have the
1105 * terminating ";" character.
1106 */
1107 start = in_buf + *offset;
1108
1109 x = strchr(start, ';');
1110 if (x)
1111 *x = 0;
1112 else
1113 x = start + strlen(start);
1114
1115 if (strlen(start) != 0) {
1116 int i = 0;
1117 /*
1118 * Get rid of leading spaces.
1119 */
1120 while (start[i] == ' ')
1121 i++;
1122
1123 if ((x - start) <= out_len) {
1124 strcpy(out_buf, (start + i));
1125 *offset += (x - start) + 1;
1126 return 1;
1127 }
1128 }
1129 return 0;
1130 }
1131
1132 static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3)
1133 {
1134 int ret;
1135
1136 ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3);
1137
1138 if (ret < 0)
1139 return HV_E_FAIL;
1140
1141 return 0;
1142 }
1143
1144
1145 static int process_ip_string(FILE *f, char *ip_string, int type)
1146 {
1147 int error = 0;
1148 char addr[INET6_ADDRSTRLEN];
1149 int i = 0;
1150 int j = 0;
1151 char str[256];
1152 char sub_str[10];
1153 int offset = 0;
1154
1155 memset(addr, 0, sizeof(addr));
1156
1157 while (parse_ip_val_buffer(ip_string, &offset, addr,
1158 (MAX_IP_ADDR_SIZE * 2))) {
1159
1160 sub_str[0] = 0;
1161 if (is_ipv4(addr)) {
1162 switch (type) {
1163 case IPADDR:
1164 snprintf(str, sizeof(str), "%s", "IPADDR");
1165 break;
1166 case NETMASK:
1167 snprintf(str, sizeof(str), "%s", "NETMASK");
1168 break;
1169 case GATEWAY:
1170 snprintf(str, sizeof(str), "%s", "GATEWAY");
1171 break;
1172 case DNS:
1173 snprintf(str, sizeof(str), "%s", "DNS");
1174 break;
1175 }
1176
1177 if (type == DNS) {
1178 snprintf(sub_str, sizeof(sub_str), "%d", ++i);
1179 } else if (type == GATEWAY && i == 0) {
1180 ++i;
1181 } else {
1182 snprintf(sub_str, sizeof(sub_str), "%d", i++);
1183 }
1184
1185
1186 } else if (expand_ipv6(addr, type)) {
1187 switch (type) {
1188 case IPADDR:
1189 snprintf(str, sizeof(str), "%s", "IPV6ADDR");
1190 break;
1191 case NETMASK:
1192 snprintf(str, sizeof(str), "%s", "IPV6NETMASK");
1193 break;
1194 case GATEWAY:
1195 snprintf(str, sizeof(str), "%s",
1196 "IPV6_DEFAULTGW");
1197 break;
1198 case DNS:
1199 snprintf(str, sizeof(str), "%s", "DNS");
1200 break;
1201 }
1202
1203 if (type == DNS) {
1204 snprintf(sub_str, sizeof(sub_str), "%d", ++i);
1205 } else if (j == 0) {
1206 ++j;
1207 } else {
1208 snprintf(sub_str, sizeof(sub_str), "_%d", j++);
1209 }
1210 } else {
1211 return HV_INVALIDARG;
1212 }
1213
1214 error = kvp_write_file(f, str, sub_str, addr);
1215 if (error)
1216 return error;
1217 memset(addr, 0, sizeof(addr));
1218 }
1219
1220 return 0;
1221 }
1222
1223 static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
1224 {
1225 int error = 0;
1226 char if_file[128];
1227 FILE *file;
1228 char cmd[512];
1229 char *mac_addr;
1230
1231 /*
1232 * Set the configuration for the specified interface with
1233 * the information provided. Since there is no standard
1234 * way to configure an interface, we will have an external
1235 * script that does the job of configuring the interface and
1236 * flushing the configuration.
1237 *
1238 * The parameters passed to this external script are:
1239 * 1. A configuration file that has the specified configuration.
1240 *
1241 * We will embed the name of the interface in the configuration
1242 * file: ifcfg-ethx (where ethx is the interface name).
1243 *
1244 * The information provided here may be more than what is needed
1245 * in a given distro to configure the interface and so are free
1246 * ignore information that may not be relevant.
1247 *
1248 * Here is the format of the ip configuration file:
1249 *
1250 * HWADDR=macaddr
1251 * DEVICE=interface name
1252 * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured
1253 * or "none" if no boot-time protocol should be used)
1254 *
1255 * IPADDR0=ipaddr1
1256 * IPADDR1=ipaddr2
1257 * IPADDRx=ipaddry (where y = x + 1)
1258 *
1259 * NETMASK0=netmask1
1260 * NETMASKx=netmasky (where y = x + 1)
1261 *
1262 * GATEWAY=ipaddr1
1263 * GATEWAYx=ipaddry (where y = x + 1)
1264 *
1265 * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc)
1266 *
1267 * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be
1268 * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as
1269 * IPV6NETMASK.
1270 *
1271 * The host can specify multiple ipv4 and ipv6 addresses to be
1272 * configured for the interface. Furthermore, the configuration
1273 * needs to be persistent. A subsequent GET call on the interface
1274 * is expected to return the configuration that is set via the SET
1275 * call.
1276 */
1277
1278 snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC,
1279 "/ifcfg-", if_name);
1280
1281 file = fopen(if_file, "w");
1282
1283 if (file == NULL) {
1284 syslog(LOG_ERR, "Failed to open config file; error: %d %s",
1285 errno, strerror(errno));
1286 return HV_E_FAIL;
1287 }
1288
1289 /*
1290 * First write out the MAC address.
1291 */
1292
1293 mac_addr = kvp_if_name_to_mac(if_name);
1294 if (mac_addr == NULL) {
1295 error = HV_E_FAIL;
1296 goto setval_error;
1297 }
1298
1299 error = kvp_write_file(file, "HWADDR", "", mac_addr);
1300 free(mac_addr);
1301 if (error)
1302 goto setval_error;
1303
1304 error = kvp_write_file(file, "DEVICE", "", if_name);
1305 if (error)
1306 goto setval_error;
1307
1308 /*
1309 * The dhcp_enabled flag is only for IPv4. In the case the host only
1310 * injects an IPv6 address, the flag is true, but we still need to
1311 * proceed to parse and pass the IPv6 information to the
1312 * disto-specific script hv_set_ifconfig.
1313 */
1314 if (new_val->dhcp_enabled) {
1315 error = kvp_write_file(file, "BOOTPROTO", "", "dhcp");
1316 if (error)
1317 goto setval_error;
1318
1319 } else {
1320 error = kvp_write_file(file, "BOOTPROTO", "", "none");
1321 if (error)
1322 goto setval_error;
1323 }
1324
1325 /*
1326 * Write the configuration for ipaddress, netmask, gateway and
1327 * name servers.
1328 */
1329
1330 error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR);
1331 if (error)
1332 goto setval_error;
1333
1334 error = process_ip_string(file, (char *)new_val->sub_net, NETMASK);
1335 if (error)
1336 goto setval_error;
1337
1338 error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY);
1339 if (error)
1340 goto setval_error;
1341
1342 error = process_ip_string(file, (char *)new_val->dns_addr, DNS);
1343 if (error)
1344 goto setval_error;
1345
1346 fclose(file);
1347
1348 /*
1349 * Now that we have populated the configuration file,
1350 * invoke the external script to do its magic.
1351 */
1352
1353 snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file);
1354 if (system(cmd)) {
1355 syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s",
1356 cmd, errno, strerror(errno));
1357 return HV_E_FAIL;
1358 }
1359 return 0;
1360
1361 setval_error:
1362 syslog(LOG_ERR, "Failed to write config file");
1363 fclose(file);
1364 return error;
1365 }
1366
1367
1368 static void
1369 kvp_get_domain_name(char *buffer, int length)
1370 {
1371 struct addrinfo hints, *info ;
1372 int error = 0;
1373
1374 gethostname(buffer, length);
1375 memset(&hints, 0, sizeof(hints));
1376 hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */
1377 hints.ai_socktype = SOCK_STREAM;
1378 hints.ai_flags = AI_CANONNAME;
1379
1380 error = getaddrinfo(buffer, NULL, &hints, &info);
1381 if (error != 0) {
1382 snprintf(buffer, length, "getaddrinfo failed: 0x%x %s",
1383 error, gai_strerror(error));
1384 return;
1385 }
1386 snprintf(buffer, length, "%s", info->ai_canonname);
1387 freeaddrinfo(info);
1388 }
1389
1390 static int
1391 netlink_send(int fd, struct cn_msg *msg)
1392 {
1393 struct nlmsghdr nlh = { .nlmsg_type = NLMSG_DONE };
1394 unsigned int size;
1395 struct msghdr message;
1396 struct iovec iov[2];
1397
1398 size = sizeof(struct cn_msg) + msg->len;
1399
1400 nlh.nlmsg_pid = getpid();
1401 nlh.nlmsg_len = NLMSG_LENGTH(size);
1402
1403 iov[0].iov_base = &nlh;
1404 iov[0].iov_len = sizeof(nlh);
1405
1406 iov[1].iov_base = msg;
1407 iov[1].iov_len = size;
1408
1409 memset(&message, 0, sizeof(message));
1410 message.msg_name = &addr;
1411 message.msg_namelen = sizeof(addr);
1412 message.msg_iov = iov;
1413 message.msg_iovlen = 2;
1414
1415 return sendmsg(fd, &message, 0);
1416 }
1417
1418 void print_usage(char *argv[])
1419 {
1420 fprintf(stderr, "Usage: %s [options]\n"
1421 "Options are:\n"
1422 " -n, --no-daemon stay in foreground, don't daemonize\n"
1423 " -h, --help print this help\n", argv[0]);
1424 }
1425
1426 int main(int argc, char *argv[])
1427 {
1428 int fd, len, nl_group;
1429 int error;
1430 struct cn_msg *message;
1431 struct pollfd pfd;
1432 struct nlmsghdr *incoming_msg;
1433 struct cn_msg *incoming_cn_msg;
1434 struct hv_kvp_msg *hv_msg;
1435 char *p;
1436 char *key_value;
1437 char *key_name;
1438 int op;
1439 int pool;
1440 char *if_name;
1441 struct hv_kvp_ipaddr_value *kvp_ip_val;
1442 char *kvp_recv_buffer;
1443 size_t kvp_recv_buffer_len;
1444 int daemonize = 1, long_index = 0, opt;
1445
1446 static struct option long_options[] = {
1447 {"help", no_argument, 0, 'h' },
1448 {"no-daemon", no_argument, 0, 'n' },
1449 {0, 0, 0, 0 }
1450 };
1451
1452 while ((opt = getopt_long(argc, argv, "hn", long_options,
1453 &long_index)) != -1) {
1454 switch (opt) {
1455 case 'n':
1456 daemonize = 0;
1457 break;
1458 case 'h':
1459 default:
1460 print_usage(argv);
1461 exit(EXIT_FAILURE);
1462 }
1463 }
1464
1465 if (daemonize && daemon(1, 0))
1466 return 1;
1467
1468 openlog("KVP", 0, LOG_USER);
1469 syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
1470
1471 kvp_recv_buffer_len = NLMSG_LENGTH(0) + sizeof(struct cn_msg) + sizeof(struct hv_kvp_msg);
1472 kvp_recv_buffer = calloc(1, kvp_recv_buffer_len);
1473 if (!kvp_recv_buffer) {
1474 syslog(LOG_ERR, "Failed to allocate netlink buffer");
1475 exit(EXIT_FAILURE);
1476 }
1477 /*
1478 * Retrieve OS release information.
1479 */
1480 kvp_get_os_info();
1481 /*
1482 * Cache Fully Qualified Domain Name because getaddrinfo takes an
1483 * unpredictable amount of time to finish.
1484 */
1485 kvp_get_domain_name(full_domain_name, sizeof(full_domain_name));
1486
1487 if (kvp_file_init()) {
1488 syslog(LOG_ERR, "Failed to initialize the pools");
1489 exit(EXIT_FAILURE);
1490 }
1491
1492 fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
1493 if (fd < 0) {
1494 syslog(LOG_ERR, "netlink socket creation failed; error: %d %s", errno,
1495 strerror(errno));
1496 exit(EXIT_FAILURE);
1497 }
1498 addr.nl_family = AF_NETLINK;
1499 addr.nl_pad = 0;
1500 addr.nl_pid = 0;
1501 addr.nl_groups = 0;
1502
1503
1504 error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
1505 if (error < 0) {
1506 syslog(LOG_ERR, "bind failed; error: %d %s", errno, strerror(errno));
1507 close(fd);
1508 exit(EXIT_FAILURE);
1509 }
1510 nl_group = CN_KVP_IDX;
1511
1512 if (setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group)) < 0) {
1513 syslog(LOG_ERR, "setsockopt failed; error: %d %s", errno, strerror(errno));
1514 close(fd);
1515 exit(EXIT_FAILURE);
1516 }
1517
1518 /*
1519 * Register ourselves with the kernel.
1520 */
1521 message = (struct cn_msg *)kvp_recv_buffer;
1522 message->id.idx = CN_KVP_IDX;
1523 message->id.val = CN_KVP_VAL;
1524
1525 hv_msg = (struct hv_kvp_msg *)message->data;
1526 hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1;
1527 message->ack = 0;
1528 message->len = sizeof(struct hv_kvp_msg);
1529
1530 len = netlink_send(fd, message);
1531 if (len < 0) {
1532 syslog(LOG_ERR, "netlink_send failed; error: %d %s", errno, strerror(errno));
1533 close(fd);
1534 exit(EXIT_FAILURE);
1535 }
1536
1537 pfd.fd = fd;
1538
1539 while (1) {
1540 struct sockaddr *addr_p = (struct sockaddr *) &addr;
1541 socklen_t addr_l = sizeof(addr);
1542 pfd.events = POLLIN;
1543 pfd.revents = 0;
1544
1545 if (poll(&pfd, 1, -1) < 0) {
1546 syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno));
1547 if (errno == EINVAL) {
1548 close(fd);
1549 exit(EXIT_FAILURE);
1550 }
1551 else
1552 continue;
1553 }
1554
1555 len = recvfrom(fd, kvp_recv_buffer, kvp_recv_buffer_len, 0,
1556 addr_p, &addr_l);
1557
1558 if (len < 0) {
1559 int saved_errno = errno;
1560 syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s",
1561 addr.nl_pid, errno, strerror(errno));
1562
1563 if (saved_errno == ENOBUFS) {
1564 syslog(LOG_ERR, "receive error: ignored");
1565 continue;
1566 }
1567
1568 close(fd);
1569 return -1;
1570 }
1571
1572 if (addr.nl_pid) {
1573 syslog(LOG_WARNING, "Received packet from untrusted pid:%u",
1574 addr.nl_pid);
1575 continue;
1576 }
1577
1578 incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
1579
1580 if (incoming_msg->nlmsg_type != NLMSG_DONE)
1581 continue;
1582
1583 incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
1584 hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
1585
1586 /*
1587 * We will use the KVP header information to pass back
1588 * the error from this daemon. So, first copy the state
1589 * and set the error code to success.
1590 */
1591 op = hv_msg->kvp_hdr.operation;
1592 pool = hv_msg->kvp_hdr.pool;
1593 hv_msg->error = HV_S_OK;
1594
1595 if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) {
1596 /*
1597 * Driver is registering with us; stash away the version
1598 * information.
1599 */
1600 in_hand_shake = 0;
1601 p = (char *)hv_msg->body.kvp_register.version;
1602 lic_version = malloc(strlen(p) + 1);
1603 if (lic_version) {
1604 strcpy(lic_version, p);
1605 syslog(LOG_INFO, "KVP LIC Version: %s",
1606 lic_version);
1607 } else {
1608 syslog(LOG_ERR, "malloc failed");
1609 }
1610 continue;
1611 }
1612
1613 switch (op) {
1614 case KVP_OP_GET_IP_INFO:
1615 kvp_ip_val = &hv_msg->body.kvp_ip_val;
1616 if_name =
1617 kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
1618
1619 if (if_name == NULL) {
1620 /*
1621 * We could not map the mac address to an
1622 * interface name; return error.
1623 */
1624 hv_msg->error = HV_E_FAIL;
1625 break;
1626 }
1627 error = kvp_get_ip_info(
1628 0, if_name, KVP_OP_GET_IP_INFO,
1629 kvp_ip_val,
1630 (MAX_IP_ADDR_SIZE * 2));
1631
1632 if (error)
1633 hv_msg->error = error;
1634
1635 free(if_name);
1636 break;
1637
1638 case KVP_OP_SET_IP_INFO:
1639 kvp_ip_val = &hv_msg->body.kvp_ip_val;
1640 if_name = kvp_get_if_name(
1641 (char *)kvp_ip_val->adapter_id);
1642 if (if_name == NULL) {
1643 /*
1644 * We could not map the guid to an
1645 * interface name; return error.
1646 */
1647 hv_msg->error = HV_GUID_NOTFOUND;
1648 break;
1649 }
1650 error = kvp_set_ip_info(if_name, kvp_ip_val);
1651 if (error)
1652 hv_msg->error = error;
1653
1654 free(if_name);
1655 break;
1656
1657 case KVP_OP_SET:
1658 if (kvp_key_add_or_modify(pool,
1659 hv_msg->body.kvp_set.data.key,
1660 hv_msg->body.kvp_set.data.key_size,
1661 hv_msg->body.kvp_set.data.value,
1662 hv_msg->body.kvp_set.data.value_size))
1663 hv_msg->error = HV_S_CONT;
1664 break;
1665
1666 case KVP_OP_GET:
1667 if (kvp_get_value(pool,
1668 hv_msg->body.kvp_set.data.key,
1669 hv_msg->body.kvp_set.data.key_size,
1670 hv_msg->body.kvp_set.data.value,
1671 hv_msg->body.kvp_set.data.value_size))
1672 hv_msg->error = HV_S_CONT;
1673 break;
1674
1675 case KVP_OP_DELETE:
1676 if (kvp_key_delete(pool,
1677 hv_msg->body.kvp_delete.key,
1678 hv_msg->body.kvp_delete.key_size))
1679 hv_msg->error = HV_S_CONT;
1680 break;
1681
1682 default:
1683 break;
1684 }
1685
1686 if (op != KVP_OP_ENUMERATE)
1687 goto kvp_done;
1688
1689 /*
1690 * If the pool is KVP_POOL_AUTO, dynamically generate
1691 * both the key and the value; if not read from the
1692 * appropriate pool.
1693 */
1694 if (pool != KVP_POOL_AUTO) {
1695 if (kvp_pool_enumerate(pool,
1696 hv_msg->body.kvp_enum_data.index,
1697 hv_msg->body.kvp_enum_data.data.key,
1698 HV_KVP_EXCHANGE_MAX_KEY_SIZE,
1699 hv_msg->body.kvp_enum_data.data.value,
1700 HV_KVP_EXCHANGE_MAX_VALUE_SIZE))
1701 hv_msg->error = HV_S_CONT;
1702 goto kvp_done;
1703 }
1704
1705 hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
1706 key_name = (char *)hv_msg->body.kvp_enum_data.data.key;
1707 key_value = (char *)hv_msg->body.kvp_enum_data.data.value;
1708
1709 switch (hv_msg->body.kvp_enum_data.index) {
1710 case FullyQualifiedDomainName:
1711 strcpy(key_value, full_domain_name);
1712 strcpy(key_name, "FullyQualifiedDomainName");
1713 break;
1714 case IntegrationServicesVersion:
1715 strcpy(key_name, "IntegrationServicesVersion");
1716 strcpy(key_value, lic_version);
1717 break;
1718 case NetworkAddressIPv4:
1719 kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE,
1720 key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
1721 strcpy(key_name, "NetworkAddressIPv4");
1722 break;
1723 case NetworkAddressIPv6:
1724 kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE,
1725 key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
1726 strcpy(key_name, "NetworkAddressIPv6");
1727 break;
1728 case OSBuildNumber:
1729 strcpy(key_value, os_build);
1730 strcpy(key_name, "OSBuildNumber");
1731 break;
1732 case OSName:
1733 strcpy(key_value, os_name);
1734 strcpy(key_name, "OSName");
1735 break;
1736 case OSMajorVersion:
1737 strcpy(key_value, os_major);
1738 strcpy(key_name, "OSMajorVersion");
1739 break;
1740 case OSMinorVersion:
1741 strcpy(key_value, os_minor);
1742 strcpy(key_name, "OSMinorVersion");
1743 break;
1744 case OSVersion:
1745 strcpy(key_value, os_version);
1746 strcpy(key_name, "OSVersion");
1747 break;
1748 case ProcessorArchitecture:
1749 strcpy(key_value, processor_arch);
1750 strcpy(key_name, "ProcessorArchitecture");
1751 break;
1752 default:
1753 hv_msg->error = HV_S_CONT;
1754 break;
1755 }
1756 /*
1757 * Send the value back to the kernel. The response is
1758 * already in the receive buffer. Update the cn_msg header to
1759 * reflect the key value that has been added to the message
1760 */
1761 kvp_done:
1762
1763 incoming_cn_msg->id.idx = CN_KVP_IDX;
1764 incoming_cn_msg->id.val = CN_KVP_VAL;
1765 incoming_cn_msg->ack = 0;
1766 incoming_cn_msg->len = sizeof(struct hv_kvp_msg);
1767
1768 len = netlink_send(fd, incoming_cn_msg);
1769 if (len < 0) {
1770 int saved_errno = errno;
1771 syslog(LOG_ERR, "net_link send failed; error: %d %s", errno,
1772 strerror(errno));
1773
1774 if (saved_errno == ENOMEM || saved_errno == ENOBUFS) {
1775 syslog(LOG_ERR, "send error: ignored");
1776 continue;
1777 }
1778
1779 exit(EXIT_FAILURE);
1780 }
1781 }
1782
1783 }
Linux kernel - Deliverables
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