Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 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 <linux/types.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <unistd.h> |
| 33 | #include <string.h> |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 34 | #include <ctype.h> |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 35 | #include <errno.h> |
| 36 | #include <arpa/inet.h> |
| 37 | #include <linux/connector.h> |
K. Y. Srinivasan | eab6af7 | 2012-02-02 16:56:49 -0800 | [diff] [blame] | 38 | #include <linux/hyperv.h> |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 39 | #include <linux/netlink.h> |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 40 | #include <ifaddrs.h> |
| 41 | #include <netdb.h> |
| 42 | #include <syslog.h> |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 43 | #include <sys/stat.h> |
| 44 | #include <fcntl.h> |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 45 | #include <dirent.h> |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 46 | |
| 47 | /* |
| 48 | * KVP protocol: The user mode component first registers with the |
| 49 | * the kernel component. Subsequently, the kernel component requests, data |
| 50 | * for the specified keys. In response to this message the user mode component |
| 51 | * fills in the value corresponding to the specified key. We overload the |
| 52 | * sequence field in the cn_msg header to define our KVP message types. |
| 53 | * |
| 54 | * We use this infrastructure for also supporting queries from user mode |
| 55 | * application for state that may be maintained in the KVP kernel component. |
| 56 | * |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 57 | */ |
| 58 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 59 | |
| 60 | enum key_index { |
| 61 | FullyQualifiedDomainName = 0, |
| 62 | IntegrationServicesVersion, /*This key is serviced in the kernel*/ |
| 63 | NetworkAddressIPv4, |
| 64 | NetworkAddressIPv6, |
| 65 | OSBuildNumber, |
| 66 | OSName, |
| 67 | OSMajorVersion, |
| 68 | OSMinorVersion, |
| 69 | OSVersion, |
| 70 | ProcessorArchitecture |
| 71 | }; |
| 72 | |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 73 | |
| 74 | enum { |
| 75 | IPADDR = 0, |
| 76 | NETMASK, |
| 77 | GATEWAY, |
| 78 | DNS |
| 79 | }; |
| 80 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 81 | static char kvp_send_buffer[4096]; |
K. Y. Srinivasan | 9b59578 | 2012-08-13 10:06:51 -0700 | [diff] [blame] | 82 | static char kvp_recv_buffer[4096 * 2]; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 83 | static struct sockaddr_nl addr; |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 84 | static int in_hand_shake = 1; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 85 | |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 86 | static char *os_name = ""; |
| 87 | static char *os_major = ""; |
| 88 | static char *os_minor = ""; |
| 89 | static char *processor_arch; |
| 90 | static char *os_build; |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 91 | static char *lic_version = "Unknown version"; |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 92 | static struct utsname uts_buf; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 93 | |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 94 | /* |
| 95 | * The location of the interface configuration file. |
| 96 | */ |
| 97 | |
| 98 | #define KVP_CONFIG_LOC "/var/opt/" |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 99 | |
| 100 | #define MAX_FILE_NAME 100 |
| 101 | #define ENTRIES_PER_BLOCK 50 |
| 102 | |
| 103 | struct kvp_record { |
K. Y. Srinivasan | d0cbc15 | 2012-09-04 14:46:34 -0700 | [diff] [blame] | 104 | char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
| 105 | char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 106 | }; |
| 107 | |
| 108 | struct kvp_file_state { |
| 109 | int fd; |
| 110 | int num_blocks; |
| 111 | struct kvp_record *records; |
| 112 | int num_records; |
K. Y. Srinivasan | d0cbc15 | 2012-09-04 14:46:34 -0700 | [diff] [blame] | 113 | char fname[MAX_FILE_NAME]; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 114 | }; |
| 115 | |
| 116 | static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; |
| 117 | |
| 118 | static void kvp_acquire_lock(int pool) |
| 119 | { |
| 120 | struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; |
| 121 | fl.l_pid = getpid(); |
| 122 | |
| 123 | if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { |
| 124 | syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 125 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 126 | } |
| 127 | } |
| 128 | |
| 129 | static void kvp_release_lock(int pool) |
| 130 | { |
| 131 | struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; |
| 132 | fl.l_pid = getpid(); |
| 133 | |
| 134 | if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { |
| 135 | perror("fcntl"); |
| 136 | syslog(LOG_ERR, "Failed to release the lock pool: %d", pool); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 137 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 138 | } |
| 139 | } |
| 140 | |
| 141 | static void kvp_update_file(int pool) |
| 142 | { |
| 143 | FILE *filep; |
| 144 | size_t bytes_written; |
| 145 | |
| 146 | /* |
| 147 | * We are going to write our in-memory registry out to |
| 148 | * disk; acquire the lock first. |
| 149 | */ |
| 150 | kvp_acquire_lock(pool); |
| 151 | |
| 152 | filep = fopen(kvp_file_info[pool].fname, "w"); |
| 153 | if (!filep) { |
| 154 | kvp_release_lock(pool); |
| 155 | syslog(LOG_ERR, "Failed to open file, pool: %d", pool); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 156 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | bytes_written = fwrite(kvp_file_info[pool].records, |
| 160 | sizeof(struct kvp_record), |
| 161 | kvp_file_info[pool].num_records, filep); |
| 162 | |
Ben Hutchings | 436473b | 2012-09-05 14:37:37 -0700 | [diff] [blame^] | 163 | if (ferror(filep) || fclose(filep)) { |
| 164 | kvp_release_lock(pool); |
| 165 | syslog(LOG_ERR, "Failed to write file, pool: %d", pool); |
| 166 | exit(EXIT_FAILURE); |
| 167 | } |
| 168 | |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 169 | kvp_release_lock(pool); |
| 170 | } |
| 171 | |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 172 | static void kvp_update_mem_state(int pool) |
| 173 | { |
| 174 | FILE *filep; |
| 175 | size_t records_read = 0; |
| 176 | struct kvp_record *record = kvp_file_info[pool].records; |
| 177 | struct kvp_record *readp; |
| 178 | int num_blocks = kvp_file_info[pool].num_blocks; |
| 179 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; |
| 180 | |
| 181 | kvp_acquire_lock(pool); |
| 182 | |
| 183 | filep = fopen(kvp_file_info[pool].fname, "r"); |
| 184 | if (!filep) { |
| 185 | kvp_release_lock(pool); |
| 186 | syslog(LOG_ERR, "Failed to open file, pool: %d", pool); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 187 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 188 | } |
Ben Hutchings | 436473b | 2012-09-05 14:37:37 -0700 | [diff] [blame^] | 189 | for (;;) { |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 190 | readp = &record[records_read]; |
| 191 | records_read += fread(readp, sizeof(struct kvp_record), |
| 192 | ENTRIES_PER_BLOCK * num_blocks, |
| 193 | filep); |
| 194 | |
Ben Hutchings | 436473b | 2012-09-05 14:37:37 -0700 | [diff] [blame^] | 195 | if (ferror(filep)) { |
| 196 | syslog(LOG_ERR, "Failed to read file, pool: %d", pool); |
| 197 | exit(EXIT_FAILURE); |
| 198 | } |
| 199 | |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 200 | if (!feof(filep)) { |
| 201 | /* |
| 202 | * We have more data to read. |
| 203 | */ |
| 204 | num_blocks++; |
| 205 | record = realloc(record, alloc_unit * num_blocks); |
| 206 | |
| 207 | if (record == NULL) { |
| 208 | syslog(LOG_ERR, "malloc failed"); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 209 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 210 | } |
| 211 | continue; |
| 212 | } |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | kvp_file_info[pool].num_blocks = num_blocks; |
| 217 | kvp_file_info[pool].records = record; |
| 218 | kvp_file_info[pool].num_records = records_read; |
| 219 | |
Ben Hutchings | d5ab482 | 2012-09-05 14:37:35 -0700 | [diff] [blame] | 220 | fclose(filep); |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 221 | kvp_release_lock(pool); |
| 222 | } |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 223 | static int kvp_file_init(void) |
| 224 | { |
K. Y. Srinivasan | 00b8335 | 2012-09-04 14:46:33 -0700 | [diff] [blame] | 225 | int fd; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 226 | FILE *filep; |
| 227 | size_t records_read; |
K. Y. Srinivasan | d0cbc15 | 2012-09-04 14:46:34 -0700 | [diff] [blame] | 228 | char *fname; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 229 | struct kvp_record *record; |
| 230 | struct kvp_record *readp; |
| 231 | int num_blocks; |
| 232 | int i; |
| 233 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; |
| 234 | |
| 235 | if (access("/var/opt/hyperv", F_OK)) { |
| 236 | if (mkdir("/var/opt/hyperv", S_IRUSR | S_IWUSR | S_IROTH)) { |
| 237 | syslog(LOG_ERR, " Failed to create /var/opt/hyperv"); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 238 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 239 | } |
| 240 | } |
| 241 | |
| 242 | for (i = 0; i < KVP_POOL_COUNT; i++) { |
| 243 | fname = kvp_file_info[i].fname; |
| 244 | records_read = 0; |
| 245 | num_blocks = 1; |
| 246 | sprintf(fname, "/var/opt/hyperv/.kvp_pool_%d", i); |
| 247 | fd = open(fname, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR | S_IROTH); |
| 248 | |
| 249 | if (fd == -1) |
| 250 | return 1; |
| 251 | |
| 252 | |
| 253 | filep = fopen(fname, "r"); |
| 254 | if (!filep) |
| 255 | return 1; |
| 256 | |
| 257 | record = malloc(alloc_unit * num_blocks); |
| 258 | if (record == NULL) { |
| 259 | fclose(filep); |
| 260 | return 1; |
| 261 | } |
Ben Hutchings | 436473b | 2012-09-05 14:37:37 -0700 | [diff] [blame^] | 262 | for (;;) { |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 263 | readp = &record[records_read]; |
| 264 | records_read += fread(readp, sizeof(struct kvp_record), |
| 265 | ENTRIES_PER_BLOCK, |
| 266 | filep); |
| 267 | |
Ben Hutchings | 436473b | 2012-09-05 14:37:37 -0700 | [diff] [blame^] | 268 | if (ferror(filep)) { |
| 269 | syslog(LOG_ERR, "Failed to read file, pool: %d", |
| 270 | i); |
| 271 | exit(EXIT_FAILURE); |
| 272 | } |
| 273 | |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 274 | if (!feof(filep)) { |
| 275 | /* |
| 276 | * We have more data to read. |
| 277 | */ |
| 278 | num_blocks++; |
| 279 | record = realloc(record, alloc_unit * |
| 280 | num_blocks); |
| 281 | if (record == NULL) { |
| 282 | fclose(filep); |
| 283 | return 1; |
| 284 | } |
| 285 | continue; |
| 286 | } |
| 287 | break; |
| 288 | } |
| 289 | kvp_file_info[i].fd = fd; |
| 290 | kvp_file_info[i].num_blocks = num_blocks; |
| 291 | kvp_file_info[i].records = record; |
| 292 | kvp_file_info[i].num_records = records_read; |
| 293 | fclose(filep); |
| 294 | |
| 295 | } |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static int kvp_key_delete(int pool, __u8 *key, int key_size) |
| 301 | { |
| 302 | int i; |
| 303 | int j, k; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 304 | int num_records; |
| 305 | struct kvp_record *record; |
| 306 | |
| 307 | /* |
| 308 | * First update the in-memory state. |
| 309 | */ |
| 310 | kvp_update_mem_state(pool); |
| 311 | |
| 312 | num_records = kvp_file_info[pool].num_records; |
| 313 | record = kvp_file_info[pool].records; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 314 | |
| 315 | for (i = 0; i < num_records; i++) { |
| 316 | if (memcmp(key, record[i].key, key_size)) |
| 317 | continue; |
| 318 | /* |
| 319 | * Found a match; just move the remaining |
| 320 | * entries up. |
| 321 | */ |
| 322 | if (i == num_records) { |
| 323 | kvp_file_info[pool].num_records--; |
| 324 | kvp_update_file(pool); |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | j = i; |
| 329 | k = j + 1; |
| 330 | for (; k < num_records; k++) { |
| 331 | strcpy(record[j].key, record[k].key); |
| 332 | strcpy(record[j].value, record[k].value); |
| 333 | j++; |
| 334 | } |
| 335 | |
| 336 | kvp_file_info[pool].num_records--; |
| 337 | kvp_update_file(pool); |
| 338 | return 0; |
| 339 | } |
| 340 | return 1; |
| 341 | } |
| 342 | |
| 343 | static int kvp_key_add_or_modify(int pool, __u8 *key, int key_size, __u8 *value, |
| 344 | int value_size) |
| 345 | { |
| 346 | int i; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 347 | int num_records; |
| 348 | struct kvp_record *record; |
| 349 | int num_blocks; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 350 | |
| 351 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || |
| 352 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
| 353 | return 1; |
| 354 | |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 355 | /* |
| 356 | * First update the in-memory state. |
| 357 | */ |
| 358 | kvp_update_mem_state(pool); |
| 359 | |
| 360 | num_records = kvp_file_info[pool].num_records; |
| 361 | record = kvp_file_info[pool].records; |
| 362 | num_blocks = kvp_file_info[pool].num_blocks; |
| 363 | |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 364 | for (i = 0; i < num_records; i++) { |
| 365 | if (memcmp(key, record[i].key, key_size)) |
| 366 | continue; |
| 367 | /* |
| 368 | * Found a match; just update the value - |
| 369 | * this is the modify case. |
| 370 | */ |
| 371 | memcpy(record[i].value, value, value_size); |
| 372 | kvp_update_file(pool); |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * Need to add a new entry; |
| 378 | */ |
| 379 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { |
| 380 | /* Need to allocate a larger array for reg entries. */ |
| 381 | record = realloc(record, sizeof(struct kvp_record) * |
| 382 | ENTRIES_PER_BLOCK * (num_blocks + 1)); |
| 383 | |
| 384 | if (record == NULL) |
| 385 | return 1; |
| 386 | kvp_file_info[pool].num_blocks++; |
| 387 | |
| 388 | } |
| 389 | memcpy(record[i].value, value, value_size); |
| 390 | memcpy(record[i].key, key, key_size); |
| 391 | kvp_file_info[pool].records = record; |
| 392 | kvp_file_info[pool].num_records++; |
| 393 | kvp_update_file(pool); |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | static int kvp_get_value(int pool, __u8 *key, int key_size, __u8 *value, |
| 398 | int value_size) |
| 399 | { |
| 400 | int i; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 401 | int num_records; |
| 402 | struct kvp_record *record; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 403 | |
| 404 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || |
| 405 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
| 406 | return 1; |
| 407 | |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 408 | /* |
| 409 | * First update the in-memory state. |
| 410 | */ |
| 411 | kvp_update_mem_state(pool); |
| 412 | |
| 413 | num_records = kvp_file_info[pool].num_records; |
| 414 | record = kvp_file_info[pool].records; |
| 415 | |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 416 | for (i = 0; i < num_records; i++) { |
| 417 | if (memcmp(key, record[i].key, key_size)) |
| 418 | continue; |
| 419 | /* |
| 420 | * Found a match; just copy the value out. |
| 421 | */ |
| 422 | memcpy(value, record[i].value, value_size); |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | return 1; |
| 427 | } |
| 428 | |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 429 | static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 430 | __u8 *value, int value_size) |
| 431 | { |
| 432 | struct kvp_record *record; |
| 433 | |
| 434 | /* |
| 435 | * First update our in-memory database. |
| 436 | */ |
| 437 | kvp_update_mem_state(pool); |
| 438 | record = kvp_file_info[pool].records; |
| 439 | |
| 440 | if (index >= kvp_file_info[pool].num_records) { |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 441 | return 1; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | memcpy(key, record[index].key, key_size); |
| 445 | memcpy(value, record[index].value, value_size); |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 446 | return 0; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 450 | void kvp_get_os_info(void) |
| 451 | { |
| 452 | FILE *file; |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 453 | char *p, buf[512]; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 454 | |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 455 | uname(&uts_buf); |
| 456 | os_build = uts_buf.release; |
K. Y. Srinivasan | 064931d | 2011-07-19 11:44:20 -0700 | [diff] [blame] | 457 | processor_arch = uts_buf.machine; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 458 | |
K. Y. Srinivasan | e54bbc6 | 2011-07-22 10:14:31 -0700 | [diff] [blame] | 459 | /* |
| 460 | * The current windows host (win7) expects the build |
| 461 | * string to be of the form: x.y.z |
| 462 | * Strip additional information we may have. |
| 463 | */ |
| 464 | p = strchr(os_build, '-'); |
| 465 | if (p) |
| 466 | *p = '\0'; |
| 467 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 468 | file = fopen("/etc/SuSE-release", "r"); |
| 469 | if (file != NULL) |
| 470 | goto kvp_osinfo_found; |
| 471 | file = fopen("/etc/redhat-release", "r"); |
| 472 | if (file != NULL) |
| 473 | goto kvp_osinfo_found; |
| 474 | /* |
| 475 | * Add code for other supported platforms. |
| 476 | */ |
| 477 | |
| 478 | /* |
| 479 | * We don't have information about the os. |
| 480 | */ |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 481 | os_name = uts_buf.sysname; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 482 | return; |
| 483 | |
| 484 | kvp_osinfo_found: |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 485 | /* up to three lines */ |
| 486 | p = fgets(buf, sizeof(buf), file); |
| 487 | if (p) { |
| 488 | p = strchr(buf, '\n'); |
| 489 | if (p) |
| 490 | *p = '\0'; |
| 491 | p = strdup(buf); |
| 492 | if (!p) |
| 493 | goto done; |
| 494 | os_name = p; |
| 495 | |
| 496 | /* second line */ |
| 497 | p = fgets(buf, sizeof(buf), file); |
| 498 | if (p) { |
| 499 | p = strchr(buf, '\n'); |
| 500 | if (p) |
| 501 | *p = '\0'; |
| 502 | p = strdup(buf); |
| 503 | if (!p) |
| 504 | goto done; |
| 505 | os_major = p; |
| 506 | |
| 507 | /* third line */ |
| 508 | p = fgets(buf, sizeof(buf), file); |
| 509 | if (p) { |
| 510 | p = strchr(buf, '\n'); |
| 511 | if (p) |
| 512 | *p = '\0'; |
| 513 | p = strdup(buf); |
| 514 | if (p) |
| 515 | os_minor = p; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | done: |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 521 | fclose(file); |
| 522 | return; |
| 523 | } |
| 524 | |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 525 | |
| 526 | |
| 527 | /* |
| 528 | * Retrieve an interface name corresponding to the specified guid. |
| 529 | * If there is a match, the function returns a pointer |
| 530 | * to the interface name and if not, a NULL is returned. |
| 531 | * If a match is found, the caller is responsible for |
| 532 | * freeing the memory. |
| 533 | */ |
| 534 | |
| 535 | static char *kvp_get_if_name(char *guid) |
| 536 | { |
| 537 | DIR *dir; |
| 538 | struct dirent *entry; |
| 539 | FILE *file; |
| 540 | char *p, *q, *x; |
| 541 | char *if_name = NULL; |
| 542 | char buf[256]; |
| 543 | char *kvp_net_dir = "/sys/class/net/"; |
| 544 | char dev_id[256]; |
| 545 | |
| 546 | dir = opendir(kvp_net_dir); |
| 547 | if (dir == NULL) |
| 548 | return NULL; |
| 549 | |
| 550 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); |
| 551 | q = dev_id + strlen(kvp_net_dir); |
| 552 | |
| 553 | while ((entry = readdir(dir)) != NULL) { |
| 554 | /* |
| 555 | * Set the state for the next pass. |
| 556 | */ |
| 557 | *q = '\0'; |
| 558 | strcat(dev_id, entry->d_name); |
| 559 | strcat(dev_id, "/device/device_id"); |
| 560 | |
| 561 | file = fopen(dev_id, "r"); |
| 562 | if (file == NULL) |
| 563 | continue; |
| 564 | |
| 565 | p = fgets(buf, sizeof(buf), file); |
| 566 | if (p) { |
| 567 | x = strchr(p, '\n'); |
| 568 | if (x) |
| 569 | *x = '\0'; |
| 570 | |
| 571 | if (!strcmp(p, guid)) { |
| 572 | /* |
| 573 | * Found the guid match; return the interface |
| 574 | * name. The caller will free the memory. |
| 575 | */ |
| 576 | if_name = strdup(entry->d_name); |
| 577 | fclose(file); |
| 578 | break; |
| 579 | } |
| 580 | } |
| 581 | fclose(file); |
| 582 | } |
| 583 | |
| 584 | closedir(dir); |
| 585 | return if_name; |
| 586 | } |
| 587 | |
| 588 | /* |
| 589 | * Retrieve the MAC address given the interface name. |
| 590 | */ |
| 591 | |
| 592 | static char *kvp_if_name_to_mac(char *if_name) |
| 593 | { |
| 594 | FILE *file; |
| 595 | char *p, *x; |
| 596 | char buf[256]; |
| 597 | char addr_file[256]; |
| 598 | int i; |
| 599 | char *mac_addr = NULL; |
| 600 | |
| 601 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", |
| 602 | if_name, "/address"); |
| 603 | |
| 604 | file = fopen(addr_file, "r"); |
| 605 | if (file == NULL) |
| 606 | return NULL; |
| 607 | |
| 608 | p = fgets(buf, sizeof(buf), file); |
| 609 | if (p) { |
| 610 | x = strchr(p, '\n'); |
| 611 | if (x) |
| 612 | *x = '\0'; |
| 613 | for (i = 0; i < strlen(p); i++) |
| 614 | p[i] = toupper(p[i]); |
| 615 | mac_addr = strdup(p); |
| 616 | } |
| 617 | |
| 618 | fclose(file); |
| 619 | return mac_addr; |
| 620 | } |
| 621 | |
| 622 | |
K. Y. Srinivasan | 16e8710 | 2012-09-05 13:50:15 -0700 | [diff] [blame] | 623 | /* |
| 624 | * Retrieve the interface name given tha MAC address. |
| 625 | */ |
| 626 | |
| 627 | static char *kvp_mac_to_if_name(char *mac) |
| 628 | { |
| 629 | DIR *dir; |
| 630 | struct dirent *entry; |
| 631 | FILE *file; |
| 632 | char *p, *q, *x; |
| 633 | char *if_name = NULL; |
| 634 | char buf[256]; |
| 635 | char *kvp_net_dir = "/sys/class/net/"; |
| 636 | char dev_id[256]; |
| 637 | int i; |
| 638 | |
| 639 | dir = opendir(kvp_net_dir); |
| 640 | if (dir == NULL) |
| 641 | return NULL; |
| 642 | |
| 643 | snprintf(dev_id, sizeof(dev_id), kvp_net_dir); |
| 644 | q = dev_id + strlen(kvp_net_dir); |
| 645 | |
| 646 | while ((entry = readdir(dir)) != NULL) { |
| 647 | /* |
| 648 | * Set the state for the next pass. |
| 649 | */ |
| 650 | *q = '\0'; |
| 651 | |
| 652 | strcat(dev_id, entry->d_name); |
| 653 | strcat(dev_id, "/address"); |
| 654 | |
| 655 | file = fopen(dev_id, "r"); |
| 656 | if (file == NULL) |
| 657 | continue; |
| 658 | |
| 659 | p = fgets(buf, sizeof(buf), file); |
| 660 | if (p) { |
| 661 | x = strchr(p, '\n'); |
| 662 | if (x) |
| 663 | *x = '\0'; |
| 664 | |
| 665 | for (i = 0; i < strlen(p); i++) |
| 666 | p[i] = toupper(p[i]); |
| 667 | |
| 668 | if (!strcmp(p, mac)) { |
| 669 | /* |
| 670 | * Found the MAC match; return the interface |
| 671 | * name. The caller will free the memory. |
| 672 | */ |
| 673 | if_name = strdup(entry->d_name); |
| 674 | fclose(file); |
| 675 | break; |
| 676 | } |
| 677 | } |
| 678 | fclose(file); |
| 679 | } |
| 680 | |
| 681 | closedir(dir); |
| 682 | return if_name; |
| 683 | } |
| 684 | |
| 685 | |
K. Y. Srinivasan | 4a52c4a | 2012-08-16 18:32:18 -0700 | [diff] [blame] | 686 | static void kvp_process_ipconfig_file(char *cmd, |
| 687 | char *config_buf, int len, |
| 688 | int element_size, int offset) |
| 689 | { |
| 690 | char buf[256]; |
| 691 | char *p; |
| 692 | char *x; |
| 693 | FILE *file; |
| 694 | |
| 695 | /* |
| 696 | * First execute the command. |
| 697 | */ |
| 698 | file = popen(cmd, "r"); |
| 699 | if (file == NULL) |
| 700 | return; |
| 701 | |
| 702 | if (offset == 0) |
| 703 | memset(config_buf, 0, len); |
| 704 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { |
| 705 | if ((len - strlen(config_buf)) < (element_size + 1)) |
| 706 | break; |
| 707 | |
| 708 | x = strchr(p, '\n'); |
| 709 | *x = '\0'; |
| 710 | strcat(config_buf, p); |
| 711 | strcat(config_buf, ";"); |
| 712 | } |
| 713 | pclose(file); |
| 714 | } |
| 715 | |
| 716 | static void kvp_get_ipconfig_info(char *if_name, |
| 717 | struct hv_kvp_ipaddr_value *buffer) |
| 718 | { |
| 719 | char cmd[512]; |
K. Y. Srinivasan | c050372 | 2012-09-05 13:50:11 -0700 | [diff] [blame] | 720 | char dhcp_info[128]; |
| 721 | char *p; |
| 722 | FILE *file; |
K. Y. Srinivasan | 4a52c4a | 2012-08-16 18:32:18 -0700 | [diff] [blame] | 723 | |
| 724 | /* |
| 725 | * Get the address of default gateway (ipv4). |
| 726 | */ |
| 727 | sprintf(cmd, "%s %s", "ip route show dev", if_name); |
| 728 | strcat(cmd, " | awk '/default/ {print $3 }'"); |
| 729 | |
| 730 | /* |
| 731 | * Execute the command to gather gateway info. |
| 732 | */ |
| 733 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, |
| 734 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); |
| 735 | |
| 736 | /* |
| 737 | * Get the address of default gateway (ipv6). |
| 738 | */ |
| 739 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); |
| 740 | strcat(cmd, " | awk '/default/ {print $3 }'"); |
| 741 | |
| 742 | /* |
| 743 | * Execute the command to gather gateway info (ipv6). |
| 744 | */ |
| 745 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, |
| 746 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); |
| 747 | |
K. Y. Srinivasan | 9692988 | 2012-09-04 14:46:36 -0700 | [diff] [blame] | 748 | |
| 749 | /* |
| 750 | * Gather the DNS state. |
| 751 | * Since there is no standard way to get this information |
| 752 | * across various distributions of interest; we just invoke |
| 753 | * an external script that needs to be ported across distros |
| 754 | * of interest. |
| 755 | * |
| 756 | * Following is the expected format of the information from the script: |
| 757 | * |
| 758 | * ipaddr1 (nameserver1) |
| 759 | * ipaddr2 (nameserver2) |
| 760 | * . |
| 761 | * . |
| 762 | */ |
| 763 | |
| 764 | sprintf(cmd, "%s", "hv_get_dns_info"); |
| 765 | |
| 766 | /* |
| 767 | * Execute the command to gather DNS info. |
| 768 | */ |
| 769 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, |
| 770 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); |
K. Y. Srinivasan | c050372 | 2012-09-05 13:50:11 -0700 | [diff] [blame] | 771 | |
| 772 | /* |
| 773 | * Gather the DHCP state. |
| 774 | * We will gather this state by invoking an external script. |
| 775 | * The parameter to the script is the interface name. |
| 776 | * Here is the expected output: |
| 777 | * |
| 778 | * Enabled: DHCP enabled. |
| 779 | */ |
| 780 | |
| 781 | sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); |
| 782 | |
| 783 | file = popen(cmd, "r"); |
| 784 | if (file == NULL) |
| 785 | return; |
| 786 | |
| 787 | p = fgets(dhcp_info, sizeof(dhcp_info), file); |
| 788 | if (p == NULL) { |
| 789 | pclose(file); |
| 790 | return; |
| 791 | } |
| 792 | |
| 793 | if (!strncmp(p, "Enabled", 7)) |
| 794 | buffer->dhcp_enabled = 1; |
| 795 | else |
| 796 | buffer->dhcp_enabled = 0; |
| 797 | |
| 798 | pclose(file); |
K. Y. Srinivasan | 4a52c4a | 2012-08-16 18:32:18 -0700 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 802 | static unsigned int hweight32(unsigned int *w) |
| 803 | { |
| 804 | unsigned int res = *w - ((*w >> 1) & 0x55555555); |
| 805 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); |
| 806 | res = (res + (res >> 4)) & 0x0F0F0F0F; |
| 807 | res = res + (res >> 8); |
| 808 | return (res + (res >> 16)) & 0x000000FF; |
| 809 | } |
| 810 | |
K. Y. Srinivasan | af73301 | 2012-08-16 18:32:14 -0700 | [diff] [blame] | 811 | static int kvp_process_ip_address(void *addrp, |
| 812 | int family, char *buffer, |
| 813 | int length, int *offset) |
| 814 | { |
| 815 | struct sockaddr_in *addr; |
| 816 | struct sockaddr_in6 *addr6; |
| 817 | int addr_length; |
| 818 | char tmp[50]; |
| 819 | const char *str; |
| 820 | |
| 821 | if (family == AF_INET) { |
| 822 | addr = (struct sockaddr_in *)addrp; |
| 823 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); |
| 824 | addr_length = INET_ADDRSTRLEN; |
| 825 | } else { |
| 826 | addr6 = (struct sockaddr_in6 *)addrp; |
| 827 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); |
| 828 | addr_length = INET6_ADDRSTRLEN; |
| 829 | } |
| 830 | |
| 831 | if ((length - *offset) < addr_length + 1) |
K. Y. Srinivasan | 16e8710 | 2012-09-05 13:50:15 -0700 | [diff] [blame] | 832 | return HV_E_FAIL; |
K. Y. Srinivasan | af73301 | 2012-08-16 18:32:14 -0700 | [diff] [blame] | 833 | if (str == NULL) { |
| 834 | strcpy(buffer, "inet_ntop failed\n"); |
K. Y. Srinivasan | 16e8710 | 2012-09-05 13:50:15 -0700 | [diff] [blame] | 835 | return HV_E_FAIL; |
K. Y. Srinivasan | af73301 | 2012-08-16 18:32:14 -0700 | [diff] [blame] | 836 | } |
| 837 | if (*offset == 0) |
| 838 | strcpy(buffer, tmp); |
| 839 | else |
| 840 | strcat(buffer, tmp); |
| 841 | strcat(buffer, ";"); |
| 842 | |
| 843 | *offset += strlen(str) + 1; |
| 844 | return 0; |
| 845 | } |
| 846 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 847 | static int |
K. Y. Srinivasan | 4a3b97e5 | 2012-09-05 13:50:14 -0700 | [diff] [blame] | 848 | kvp_get_ip_info(int family, char *if_name, int op, |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 849 | void *out_buffer, int length) |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 850 | { |
| 851 | struct ifaddrs *ifap; |
| 852 | struct ifaddrs *curp; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 853 | int offset = 0; |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 854 | int sn_offset = 0; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 855 | int error = 0; |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 856 | char *buffer; |
| 857 | struct hv_kvp_ipaddr_value *ip_buffer; |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 858 | char cidr_mask[5]; /* /xyz */ |
| 859 | int weight; |
| 860 | int i; |
| 861 | unsigned int *w; |
| 862 | char *sn_str; |
| 863 | struct sockaddr_in6 *addr6; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 864 | |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 865 | if (op == KVP_OP_ENUMERATE) { |
| 866 | buffer = out_buffer; |
| 867 | } else { |
| 868 | ip_buffer = out_buffer; |
| 869 | buffer = (char *)ip_buffer->ip_addr; |
| 870 | ip_buffer->addr_family = 0; |
| 871 | } |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 872 | /* |
| 873 | * On entry into this function, the buffer is capable of holding the |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 874 | * maximum key value. |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 875 | */ |
| 876 | |
| 877 | if (getifaddrs(&ifap)) { |
| 878 | strcpy(buffer, "getifaddrs failed\n"); |
K. Y. Srinivasan | 16e8710 | 2012-09-05 13:50:15 -0700 | [diff] [blame] | 879 | return HV_E_FAIL; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 880 | } |
| 881 | |
| 882 | curp = ifap; |
| 883 | while (curp != NULL) { |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 884 | if (curp->ifa_addr == NULL) { |
| 885 | curp = curp->ifa_next; |
| 886 | continue; |
| 887 | } |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 888 | |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 889 | if ((if_name != NULL) && |
| 890 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { |
| 891 | /* |
| 892 | * We want info about a specific interface; |
| 893 | * just continue. |
| 894 | */ |
| 895 | curp = curp->ifa_next; |
| 896 | continue; |
| 897 | } |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 898 | |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 899 | /* |
| 900 | * We only support two address families: AF_INET and AF_INET6. |
| 901 | * If a family value of 0 is specified, we collect both |
| 902 | * supported address families; if not we gather info on |
| 903 | * the specified address family. |
| 904 | */ |
| 905 | if ((family != 0) && (curp->ifa_addr->sa_family != family)) { |
| 906 | curp = curp->ifa_next; |
| 907 | continue; |
| 908 | } |
| 909 | if ((curp->ifa_addr->sa_family != AF_INET) && |
| 910 | (curp->ifa_addr->sa_family != AF_INET6)) { |
| 911 | curp = curp->ifa_next; |
| 912 | continue; |
| 913 | } |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 914 | |
K. Y. Srinivasan | 0d5b6b1 | 2012-08-16 18:32:15 -0700 | [diff] [blame] | 915 | if (op == KVP_OP_GET_IP_INFO) { |
| 916 | /* |
| 917 | * Gather info other than the IP address. |
| 918 | * IP address info will be gathered later. |
| 919 | */ |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 920 | if (curp->ifa_addr->sa_family == AF_INET) { |
K. Y. Srinivasan | 0d5b6b1 | 2012-08-16 18:32:15 -0700 | [diff] [blame] | 921 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 922 | /* |
| 923 | * Get subnet info. |
| 924 | */ |
| 925 | error = kvp_process_ip_address( |
| 926 | curp->ifa_netmask, |
| 927 | AF_INET, |
| 928 | (char *) |
| 929 | ip_buffer->sub_net, |
| 930 | length, |
| 931 | &sn_offset); |
| 932 | if (error) |
| 933 | goto gather_ipaddr; |
| 934 | } else { |
K. Y. Srinivasan | 0d5b6b1 | 2012-08-16 18:32:15 -0700 | [diff] [blame] | 935 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 936 | |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 937 | /* |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 938 | * Get subnet info in CIDR format. |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 939 | */ |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 940 | weight = 0; |
| 941 | sn_str = (char *)ip_buffer->sub_net; |
| 942 | addr6 = (struct sockaddr_in6 *) |
| 943 | curp->ifa_netmask; |
| 944 | w = addr6->sin6_addr.s6_addr32; |
| 945 | |
| 946 | for (i = 0; i < 4; i++) |
| 947 | weight += hweight32(&w[i]); |
| 948 | |
| 949 | sprintf(cidr_mask, "/%d", weight); |
| 950 | if ((length - sn_offset) < |
| 951 | (strlen(cidr_mask) + 1)) |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 952 | goto gather_ipaddr; |
K. Y. Srinivasan | 6a60a6a | 2012-08-16 18:32:17 -0700 | [diff] [blame] | 953 | |
| 954 | if (sn_offset == 0) |
| 955 | strcpy(sn_str, cidr_mask); |
| 956 | else |
| 957 | strcat(sn_str, cidr_mask); |
| 958 | strcat((char *)ip_buffer->sub_net, ";"); |
| 959 | sn_offset += strlen(sn_str) + 1; |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 960 | } |
K. Y. Srinivasan | 4a52c4a | 2012-08-16 18:32:18 -0700 | [diff] [blame] | 961 | |
| 962 | /* |
| 963 | * Collect other ip related configuration info. |
| 964 | */ |
| 965 | |
| 966 | kvp_get_ipconfig_info(if_name, ip_buffer); |
K. Y. Srinivasan | 0d5b6b1 | 2012-08-16 18:32:15 -0700 | [diff] [blame] | 967 | } |
| 968 | |
K. Y. Srinivasan | 0440578 | 2012-08-16 18:32:16 -0700 | [diff] [blame] | 969 | gather_ipaddr: |
K. Y. Srinivasan | af73301 | 2012-08-16 18:32:14 -0700 | [diff] [blame] | 970 | error = kvp_process_ip_address(curp->ifa_addr, |
| 971 | curp->ifa_addr->sa_family, |
| 972 | buffer, |
| 973 | length, &offset); |
| 974 | if (error) |
| 975 | goto getaddr_done; |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 976 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 977 | curp = curp->ifa_next; |
| 978 | } |
| 979 | |
| 980 | getaddr_done: |
| 981 | freeifaddrs(ifap); |
| 982 | return error; |
| 983 | } |
| 984 | |
| 985 | |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 986 | static int expand_ipv6(char *addr, int type) |
| 987 | { |
| 988 | int ret; |
| 989 | struct in6_addr v6_addr; |
| 990 | |
| 991 | ret = inet_pton(AF_INET6, addr, &v6_addr); |
| 992 | |
| 993 | if (ret != 1) { |
| 994 | if (type == NETMASK) |
| 995 | return 1; |
| 996 | return 0; |
| 997 | } |
| 998 | |
| 999 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" |
| 1000 | "%02x%02x:%02x%02x:%02x%02x", |
| 1001 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], |
| 1002 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], |
| 1003 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], |
| 1004 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], |
| 1005 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], |
| 1006 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], |
| 1007 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], |
| 1008 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); |
| 1009 | |
| 1010 | return 1; |
| 1011 | |
| 1012 | } |
| 1013 | |
| 1014 | static int is_ipv4(char *addr) |
| 1015 | { |
| 1016 | int ret; |
| 1017 | struct in_addr ipv4_addr; |
| 1018 | |
| 1019 | ret = inet_pton(AF_INET, addr, &ipv4_addr); |
| 1020 | |
| 1021 | if (ret == 1) |
| 1022 | return 1; |
| 1023 | return 0; |
| 1024 | } |
| 1025 | |
| 1026 | static int parse_ip_val_buffer(char *in_buf, int *offset, |
| 1027 | char *out_buf, int out_len) |
| 1028 | { |
| 1029 | char *x; |
| 1030 | char *start; |
| 1031 | |
| 1032 | /* |
| 1033 | * in_buf has sequence of characters that are seperated by |
| 1034 | * the character ';'. The last sequence does not have the |
| 1035 | * terminating ";" character. |
| 1036 | */ |
| 1037 | start = in_buf + *offset; |
| 1038 | |
| 1039 | x = strchr(start, ';'); |
| 1040 | if (x) |
| 1041 | *x = 0; |
| 1042 | else |
| 1043 | x = start + strlen(start); |
| 1044 | |
| 1045 | if (strlen(start) != 0) { |
| 1046 | int i = 0; |
| 1047 | /* |
| 1048 | * Get rid of leading spaces. |
| 1049 | */ |
| 1050 | while (start[i] == ' ') |
| 1051 | i++; |
| 1052 | |
| 1053 | if ((x - start) <= out_len) { |
| 1054 | strcpy(out_buf, (start + i)); |
| 1055 | *offset += (x - start) + 1; |
| 1056 | return 1; |
| 1057 | } |
| 1058 | } |
| 1059 | return 0; |
| 1060 | } |
| 1061 | |
| 1062 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) |
| 1063 | { |
| 1064 | int ret; |
| 1065 | |
| 1066 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); |
| 1067 | |
| 1068 | if (ret < 0) |
| 1069 | return HV_E_FAIL; |
| 1070 | |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | |
| 1075 | static int process_ip_string(FILE *f, char *ip_string, int type) |
| 1076 | { |
| 1077 | int error = 0; |
| 1078 | char addr[INET6_ADDRSTRLEN]; |
| 1079 | int i = 0; |
| 1080 | int j = 0; |
| 1081 | char str[256]; |
| 1082 | char sub_str[10]; |
| 1083 | int offset = 0; |
| 1084 | |
| 1085 | memset(addr, 0, sizeof(addr)); |
| 1086 | |
| 1087 | while (parse_ip_val_buffer(ip_string, &offset, addr, |
| 1088 | (MAX_IP_ADDR_SIZE * 2))) { |
| 1089 | |
| 1090 | sub_str[0] = 0; |
| 1091 | if (is_ipv4(addr)) { |
| 1092 | switch (type) { |
| 1093 | case IPADDR: |
| 1094 | snprintf(str, sizeof(str), "%s", "IPADDR"); |
| 1095 | break; |
| 1096 | case NETMASK: |
| 1097 | snprintf(str, sizeof(str), "%s", "NETMASK"); |
| 1098 | break; |
| 1099 | case GATEWAY: |
| 1100 | snprintf(str, sizeof(str), "%s", "GATEWAY"); |
| 1101 | break; |
| 1102 | case DNS: |
| 1103 | snprintf(str, sizeof(str), "%s", "DNS"); |
| 1104 | break; |
| 1105 | } |
| 1106 | if (i != 0) { |
| 1107 | if (type != DNS) { |
| 1108 | snprintf(sub_str, sizeof(sub_str), |
| 1109 | "_%d", i++); |
| 1110 | } else { |
| 1111 | snprintf(sub_str, sizeof(sub_str), |
| 1112 | "%d", ++i); |
| 1113 | } |
| 1114 | } else if (type == DNS) { |
| 1115 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | } else if (expand_ipv6(addr, type)) { |
| 1120 | switch (type) { |
| 1121 | case IPADDR: |
| 1122 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); |
| 1123 | break; |
| 1124 | case NETMASK: |
| 1125 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); |
| 1126 | break; |
| 1127 | case GATEWAY: |
| 1128 | snprintf(str, sizeof(str), "%s", |
| 1129 | "IPV6_DEFAULTGW"); |
| 1130 | break; |
| 1131 | case DNS: |
| 1132 | snprintf(str, sizeof(str), "%s", "DNS"); |
| 1133 | break; |
| 1134 | } |
| 1135 | if ((j != 0) || (type == DNS)) { |
| 1136 | if (type != DNS) { |
| 1137 | snprintf(sub_str, sizeof(sub_str), |
| 1138 | "_%d", j++); |
| 1139 | } else { |
| 1140 | snprintf(sub_str, sizeof(sub_str), |
| 1141 | "%d", ++i); |
| 1142 | } |
| 1143 | } else if (type == DNS) { |
| 1144 | snprintf(sub_str, sizeof(sub_str), |
| 1145 | "%d", ++i); |
| 1146 | } |
| 1147 | } else { |
| 1148 | return HV_INVALIDARG; |
| 1149 | } |
| 1150 | |
| 1151 | error = kvp_write_file(f, str, sub_str, addr); |
| 1152 | if (error) |
| 1153 | return error; |
| 1154 | memset(addr, 0, sizeof(addr)); |
| 1155 | } |
| 1156 | |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) |
| 1161 | { |
| 1162 | int error = 0; |
| 1163 | char if_file[128]; |
| 1164 | FILE *file; |
| 1165 | char cmd[512]; |
| 1166 | char *mac_addr; |
| 1167 | |
| 1168 | /* |
| 1169 | * Set the configuration for the specified interface with |
| 1170 | * the information provided. Since there is no standard |
| 1171 | * way to configure an interface, we will have an external |
| 1172 | * script that does the job of configuring the interface and |
| 1173 | * flushing the configuration. |
| 1174 | * |
| 1175 | * The parameters passed to this external script are: |
| 1176 | * 1. A configuration file that has the specified configuration. |
| 1177 | * |
| 1178 | * We will embed the name of the interface in the configuration |
| 1179 | * file: ifcfg-ethx (where ethx is the interface name). |
| 1180 | * |
| 1181 | * The information provided here may be more than what is needed |
| 1182 | * in a given distro to configure the interface and so are free |
| 1183 | * ignore information that may not be relevant. |
| 1184 | * |
| 1185 | * Here is the format of the ip configuration file: |
| 1186 | * |
| 1187 | * HWADDR=macaddr |
| 1188 | * IF_NAME=interface name |
| 1189 | * DHCP=yes (This is optional; if yes, DHCP is configured) |
| 1190 | * |
| 1191 | * IPADDR=ipaddr1 |
| 1192 | * IPADDR_1=ipaddr2 |
| 1193 | * IPADDR_x=ipaddry (where y = x + 1) |
| 1194 | * |
| 1195 | * NETMASK=netmask1 |
| 1196 | * NETMASK_x=netmasky (where y = x + 1) |
| 1197 | * |
| 1198 | * GATEWAY=ipaddr1 |
| 1199 | * GATEWAY_x=ipaddry (where y = x + 1) |
| 1200 | * |
| 1201 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) |
| 1202 | * |
| 1203 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be |
| 1204 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as |
| 1205 | * IPV6NETMASK. |
| 1206 | * |
| 1207 | * The host can specify multiple ipv4 and ipv6 addresses to be |
| 1208 | * configured for the interface. Furthermore, the configuration |
| 1209 | * needs to be persistent. A subsequent GET call on the interface |
| 1210 | * is expected to return the configuration that is set via the SET |
| 1211 | * call. |
| 1212 | */ |
| 1213 | |
| 1214 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, |
| 1215 | "hyperv/ifcfg-", if_name); |
| 1216 | |
| 1217 | file = fopen(if_file, "w"); |
| 1218 | |
| 1219 | if (file == NULL) { |
| 1220 | syslog(LOG_ERR, "Failed to open config file"); |
| 1221 | return HV_E_FAIL; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * First write out the MAC address. |
| 1226 | */ |
| 1227 | |
| 1228 | mac_addr = kvp_if_name_to_mac(if_name); |
| 1229 | if (mac_addr == NULL) { |
| 1230 | error = HV_E_FAIL; |
| 1231 | goto setval_error; |
| 1232 | } |
| 1233 | |
| 1234 | error = kvp_write_file(file, "HWADDR", "", mac_addr); |
| 1235 | if (error) |
| 1236 | goto setval_error; |
| 1237 | |
| 1238 | error = kvp_write_file(file, "IF_NAME", "", if_name); |
| 1239 | if (error) |
| 1240 | goto setval_error; |
| 1241 | |
| 1242 | if (new_val->dhcp_enabled) { |
| 1243 | error = kvp_write_file(file, "DHCP", "", "yes"); |
| 1244 | if (error) |
| 1245 | goto setval_error; |
| 1246 | |
| 1247 | /* |
| 1248 | * We are done!. |
| 1249 | */ |
| 1250 | goto setval_done; |
| 1251 | } |
| 1252 | |
| 1253 | /* |
| 1254 | * Write the configuration for ipaddress, netmask, gateway and |
| 1255 | * name servers. |
| 1256 | */ |
| 1257 | |
| 1258 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); |
| 1259 | if (error) |
| 1260 | goto setval_error; |
| 1261 | |
| 1262 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); |
| 1263 | if (error) |
| 1264 | goto setval_error; |
| 1265 | |
| 1266 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); |
| 1267 | if (error) |
| 1268 | goto setval_error; |
| 1269 | |
| 1270 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); |
| 1271 | if (error) |
| 1272 | goto setval_error; |
| 1273 | |
| 1274 | setval_done: |
| 1275 | free(mac_addr); |
| 1276 | fclose(file); |
| 1277 | |
| 1278 | /* |
| 1279 | * Now that we have populated the configuration file, |
| 1280 | * invoke the external script to do its magic. |
| 1281 | */ |
| 1282 | |
| 1283 | snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file); |
| 1284 | system(cmd); |
| 1285 | return 0; |
| 1286 | |
| 1287 | setval_error: |
| 1288 | syslog(LOG_ERR, "Failed to write config file"); |
| 1289 | free(mac_addr); |
| 1290 | fclose(file); |
| 1291 | return error; |
| 1292 | } |
| 1293 | |
| 1294 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1295 | static int |
| 1296 | kvp_get_domain_name(char *buffer, int length) |
| 1297 | { |
| 1298 | struct addrinfo hints, *info ; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1299 | int error = 0; |
| 1300 | |
K. Y. Srinivasan | 5be528c | 2011-07-26 11:03:10 -0700 | [diff] [blame] | 1301 | gethostname(buffer, length); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1302 | memset(&hints, 0, sizeof(hints)); |
| 1303 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ |
| 1304 | hints.ai_socktype = SOCK_STREAM; |
| 1305 | hints.ai_flags = AI_CANONNAME; |
| 1306 | |
K. Y. Srinivasan | 5be528c | 2011-07-26 11:03:10 -0700 | [diff] [blame] | 1307 | error = getaddrinfo(buffer, NULL, &hints, &info); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1308 | if (error != 0) { |
| 1309 | strcpy(buffer, "getaddrinfo failed\n"); |
K. Y. Srinivasan | 5be528c | 2011-07-26 11:03:10 -0700 | [diff] [blame] | 1310 | return error; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1311 | } |
| 1312 | strcpy(buffer, info->ai_canonname); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1313 | freeaddrinfo(info); |
| 1314 | return error; |
| 1315 | } |
| 1316 | |
| 1317 | static int |
| 1318 | netlink_send(int fd, struct cn_msg *msg) |
| 1319 | { |
| 1320 | struct nlmsghdr *nlh; |
| 1321 | unsigned int size; |
| 1322 | struct msghdr message; |
| 1323 | char buffer[64]; |
| 1324 | struct iovec iov[2]; |
| 1325 | |
| 1326 | size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len); |
| 1327 | |
| 1328 | nlh = (struct nlmsghdr *)buffer; |
| 1329 | nlh->nlmsg_seq = 0; |
| 1330 | nlh->nlmsg_pid = getpid(); |
| 1331 | nlh->nlmsg_type = NLMSG_DONE; |
| 1332 | nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh)); |
| 1333 | nlh->nlmsg_flags = 0; |
| 1334 | |
| 1335 | iov[0].iov_base = nlh; |
| 1336 | iov[0].iov_len = sizeof(*nlh); |
| 1337 | |
| 1338 | iov[1].iov_base = msg; |
| 1339 | iov[1].iov_len = size; |
| 1340 | |
| 1341 | memset(&message, 0, sizeof(message)); |
| 1342 | message.msg_name = &addr; |
| 1343 | message.msg_namelen = sizeof(addr); |
| 1344 | message.msg_iov = iov; |
| 1345 | message.msg_iovlen = 2; |
| 1346 | |
| 1347 | return sendmsg(fd, &message, 0); |
| 1348 | } |
| 1349 | |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 1350 | int main(void) |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1351 | { |
| 1352 | int fd, len, sock_opt; |
| 1353 | int error; |
| 1354 | struct cn_msg *message; |
| 1355 | struct pollfd pfd; |
| 1356 | struct nlmsghdr *incoming_msg; |
| 1357 | struct cn_msg *incoming_cn_msg; |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1358 | struct hv_kvp_msg *hv_msg; |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 1359 | char *p; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1360 | char *key_value; |
| 1361 | char *key_name; |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1362 | int op; |
| 1363 | int pool; |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 1364 | char *if_name; |
| 1365 | struct hv_kvp_ipaddr_value *kvp_ip_val; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1366 | |
| 1367 | daemon(1, 0); |
| 1368 | openlog("KVP", 0, LOG_USER); |
| 1369 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); |
| 1370 | /* |
| 1371 | * Retrieve OS release information. |
| 1372 | */ |
| 1373 | kvp_get_os_info(); |
| 1374 | |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1375 | if (kvp_file_init()) { |
| 1376 | syslog(LOG_ERR, "Failed to initialize the pools"); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 1377 | exit(EXIT_FAILURE); |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1378 | } |
| 1379 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1380 | fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); |
| 1381 | if (fd < 0) { |
| 1382 | syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 1383 | exit(EXIT_FAILURE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1384 | } |
| 1385 | addr.nl_family = AF_NETLINK; |
| 1386 | addr.nl_pad = 0; |
| 1387 | addr.nl_pid = 0; |
| 1388 | addr.nl_groups = CN_KVP_IDX; |
| 1389 | |
| 1390 | |
| 1391 | error = bind(fd, (struct sockaddr *)&addr, sizeof(addr)); |
| 1392 | if (error < 0) { |
| 1393 | syslog(LOG_ERR, "bind failed; error:%d", error); |
| 1394 | close(fd); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 1395 | exit(EXIT_FAILURE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1396 | } |
| 1397 | sock_opt = addr.nl_groups; |
| 1398 | setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt)); |
| 1399 | /* |
| 1400 | * Register ourselves with the kernel. |
| 1401 | */ |
| 1402 | message = (struct cn_msg *)kvp_send_buffer; |
| 1403 | message->id.idx = CN_KVP_IDX; |
| 1404 | message->id.val = CN_KVP_VAL; |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1405 | |
| 1406 | hv_msg = (struct hv_kvp_msg *)message->data; |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1407 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1408 | message->ack = 0; |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1409 | message->len = sizeof(struct hv_kvp_msg); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1410 | |
| 1411 | len = netlink_send(fd, message); |
| 1412 | if (len < 0) { |
| 1413 | syslog(LOG_ERR, "netlink_send failed; error:%d", len); |
| 1414 | close(fd); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 1415 | exit(EXIT_FAILURE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | pfd.fd = fd; |
| 1419 | |
| 1420 | while (1) { |
Olaf Hering | bcc2c9c | 2012-05-31 16:40:06 +0200 | [diff] [blame] | 1421 | struct sockaddr *addr_p = (struct sockaddr *) &addr; |
| 1422 | socklen_t addr_l = sizeof(addr); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1423 | pfd.events = POLLIN; |
| 1424 | pfd.revents = 0; |
| 1425 | poll(&pfd, 1, -1); |
| 1426 | |
Olaf Hering | bcc2c9c | 2012-05-31 16:40:06 +0200 | [diff] [blame] | 1427 | len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0, |
| 1428 | addr_p, &addr_l); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1429 | |
Olaf Hering | bcc2c9c | 2012-05-31 16:40:06 +0200 | [diff] [blame] | 1430 | if (len < 0 || addr.nl_pid) { |
| 1431 | syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s", |
| 1432 | addr.nl_pid, errno, strerror(errno)); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1433 | close(fd); |
| 1434 | return -1; |
| 1435 | } |
| 1436 | |
| 1437 | incoming_msg = (struct nlmsghdr *)kvp_recv_buffer; |
| 1438 | incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1439 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1440 | |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1441 | /* |
| 1442 | * We will use the KVP header information to pass back |
| 1443 | * the error from this daemon. So, first copy the state |
| 1444 | * and set the error code to success. |
| 1445 | */ |
| 1446 | op = hv_msg->kvp_hdr.operation; |
| 1447 | pool = hv_msg->kvp_hdr.pool; |
| 1448 | hv_msg->error = HV_S_OK; |
| 1449 | |
| 1450 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1451 | /* |
| 1452 | * Driver is registering with us; stash away the version |
| 1453 | * information. |
| 1454 | */ |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1455 | in_hand_shake = 0; |
K. Y. Srinivasan | e485ceac | 2012-03-10 15:32:08 -0800 | [diff] [blame] | 1456 | p = (char *)hv_msg->body.kvp_register.version; |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 1457 | lic_version = malloc(strlen(p) + 1); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1458 | if (lic_version) { |
Olaf Hering | 7989f7d | 2011-03-22 10:02:17 +0100 | [diff] [blame] | 1459 | strcpy(lic_version, p); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1460 | syslog(LOG_INFO, "KVP LIC Version: %s", |
| 1461 | lic_version); |
| 1462 | } else { |
| 1463 | syslog(LOG_ERR, "malloc failed"); |
| 1464 | } |
| 1465 | continue; |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1466 | } |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1467 | |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1468 | switch (op) { |
K. Y. Srinivasan | 16e8710 | 2012-09-05 13:50:15 -0700 | [diff] [blame] | 1469 | case KVP_OP_GET_IP_INFO: |
| 1470 | kvp_ip_val = &hv_msg->body.kvp_ip_val; |
| 1471 | if_name = |
| 1472 | kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); |
| 1473 | |
| 1474 | if (if_name == NULL) { |
| 1475 | /* |
| 1476 | * We could not map the mac address to an |
| 1477 | * interface name; return error. |
| 1478 | */ |
| 1479 | hv_msg->error = HV_E_FAIL; |
| 1480 | break; |
| 1481 | } |
| 1482 | error = kvp_get_ip_info( |
| 1483 | 0, if_name, KVP_OP_GET_IP_INFO, |
| 1484 | kvp_ip_val, |
| 1485 | (MAX_IP_ADDR_SIZE * 2)); |
| 1486 | |
| 1487 | if (error) |
| 1488 | hv_msg->error = error; |
| 1489 | |
| 1490 | free(if_name); |
| 1491 | break; |
| 1492 | |
K. Y. Srinivasan | 32061b4 | 2012-09-05 13:50:13 -0700 | [diff] [blame] | 1493 | case KVP_OP_SET_IP_INFO: |
| 1494 | kvp_ip_val = &hv_msg->body.kvp_ip_val; |
| 1495 | if_name = kvp_get_if_name( |
| 1496 | (char *)kvp_ip_val->adapter_id); |
| 1497 | if (if_name == NULL) { |
| 1498 | /* |
| 1499 | * We could not map the guid to an |
| 1500 | * interface name; return error. |
| 1501 | */ |
| 1502 | hv_msg->error = HV_GUID_NOTFOUND; |
| 1503 | break; |
| 1504 | } |
| 1505 | error = kvp_set_ip_info(if_name, kvp_ip_val); |
| 1506 | if (error) |
| 1507 | hv_msg->error = error; |
| 1508 | |
| 1509 | free(if_name); |
| 1510 | break; |
| 1511 | |
K. Y. Srinivasan | fa3d5b8 | 2012-03-16 08:02:25 -0700 | [diff] [blame] | 1512 | case KVP_OP_SET: |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1513 | if (kvp_key_add_or_modify(pool, |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1514 | hv_msg->body.kvp_set.data.key, |
| 1515 | hv_msg->body.kvp_set.data.key_size, |
| 1516 | hv_msg->body.kvp_set.data.value, |
| 1517 | hv_msg->body.kvp_set.data.value_size)) |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1518 | hv_msg->error = HV_S_CONT; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1519 | break; |
| 1520 | |
K. Y. Srinivasan | fa3d5b8 | 2012-03-16 08:02:25 -0700 | [diff] [blame] | 1521 | case KVP_OP_GET: |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1522 | if (kvp_get_value(pool, |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1523 | hv_msg->body.kvp_set.data.key, |
| 1524 | hv_msg->body.kvp_set.data.key_size, |
| 1525 | hv_msg->body.kvp_set.data.value, |
| 1526 | hv_msg->body.kvp_set.data.value_size)) |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1527 | hv_msg->error = HV_S_CONT; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1528 | break; |
| 1529 | |
K. Y. Srinivasan | fa3d5b8 | 2012-03-16 08:02:25 -0700 | [diff] [blame] | 1530 | case KVP_OP_DELETE: |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1531 | if (kvp_key_delete(pool, |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1532 | hv_msg->body.kvp_delete.key, |
| 1533 | hv_msg->body.kvp_delete.key_size)) |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1534 | hv_msg->error = HV_S_CONT; |
K. Y. Srinivasan | db42533 | 2012-03-16 08:02:26 -0700 | [diff] [blame] | 1535 | break; |
| 1536 | |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1537 | default: |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1538 | break; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1539 | } |
| 1540 | |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1541 | if (op != KVP_OP_ENUMERATE) |
K. Y. Srinivasan | fa3d5b8 | 2012-03-16 08:02:25 -0700 | [diff] [blame] | 1542 | goto kvp_done; |
| 1543 | |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 1544 | /* |
| 1545 | * If the pool is KVP_POOL_AUTO, dynamically generate |
| 1546 | * both the key and the value; if not read from the |
| 1547 | * appropriate pool. |
| 1548 | */ |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1549 | if (pool != KVP_POOL_AUTO) { |
| 1550 | if (kvp_pool_enumerate(pool, |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 1551 | hv_msg->body.kvp_enum_data.index, |
| 1552 | hv_msg->body.kvp_enum_data.data.key, |
| 1553 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, |
| 1554 | hv_msg->body.kvp_enum_data.data.value, |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1555 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
| 1556 | hv_msg->error = HV_S_CONT; |
K. Y. Srinivasan | adc80ae | 2012-03-16 08:02:27 -0700 | [diff] [blame] | 1557 | goto kvp_done; |
| 1558 | } |
| 1559 | |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1560 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
| 1561 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; |
| 1562 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1563 | |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1564 | switch (hv_msg->body.kvp_enum_data.index) { |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1565 | case FullyQualifiedDomainName: |
| 1566 | kvp_get_domain_name(key_value, |
| 1567 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
| 1568 | strcpy(key_name, "FullyQualifiedDomainName"); |
| 1569 | break; |
| 1570 | case IntegrationServicesVersion: |
| 1571 | strcpy(key_name, "IntegrationServicesVersion"); |
| 1572 | strcpy(key_value, lic_version); |
| 1573 | break; |
| 1574 | case NetworkAddressIPv4: |
K. Y. Srinivasan | 4a3b97e5 | 2012-09-05 13:50:14 -0700 | [diff] [blame] | 1575 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 1576 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1577 | strcpy(key_name, "NetworkAddressIPv4"); |
| 1578 | break; |
| 1579 | case NetworkAddressIPv6: |
K. Y. Srinivasan | 4a3b97e5 | 2012-09-05 13:50:14 -0700 | [diff] [blame] | 1580 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
K. Y. Srinivasan | 0ecaa19 | 2012-08-16 18:32:13 -0700 | [diff] [blame] | 1581 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1582 | strcpy(key_name, "NetworkAddressIPv6"); |
| 1583 | break; |
| 1584 | case OSBuildNumber: |
| 1585 | strcpy(key_value, os_build); |
| 1586 | strcpy(key_name, "OSBuildNumber"); |
| 1587 | break; |
| 1588 | case OSName: |
| 1589 | strcpy(key_value, os_name); |
| 1590 | strcpy(key_name, "OSName"); |
| 1591 | break; |
| 1592 | case OSMajorVersion: |
| 1593 | strcpy(key_value, os_major); |
| 1594 | strcpy(key_name, "OSMajorVersion"); |
| 1595 | break; |
| 1596 | case OSMinorVersion: |
| 1597 | strcpy(key_value, os_minor); |
| 1598 | strcpy(key_name, "OSMinorVersion"); |
| 1599 | break; |
| 1600 | case OSVersion: |
| 1601 | strcpy(key_value, os_build); |
| 1602 | strcpy(key_name, "OSVersion"); |
| 1603 | break; |
| 1604 | case ProcessorArchitecture: |
| 1605 | strcpy(key_value, processor_arch); |
| 1606 | strcpy(key_name, "ProcessorArchitecture"); |
| 1607 | break; |
| 1608 | default: |
K. Y. Srinivasan | b47a81d | 2012-08-13 10:06:52 -0700 | [diff] [blame] | 1609 | hv_msg->error = HV_S_CONT; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1610 | break; |
| 1611 | } |
| 1612 | /* |
| 1613 | * Send the value back to the kernel. The response is |
| 1614 | * already in the receive buffer. Update the cn_msg header to |
| 1615 | * reflect the key value that has been added to the message |
| 1616 | */ |
K. Y. Srinivasan | fa3d5b8 | 2012-03-16 08:02:25 -0700 | [diff] [blame] | 1617 | kvp_done: |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1618 | |
| 1619 | incoming_cn_msg->id.idx = CN_KVP_IDX; |
| 1620 | incoming_cn_msg->id.val = CN_KVP_VAL; |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1621 | incoming_cn_msg->ack = 0; |
K. Y. Srinivasan | 264033543 | 2012-02-02 16:56:50 -0800 | [diff] [blame] | 1622 | incoming_cn_msg->len = sizeof(struct hv_kvp_msg); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1623 | |
| 1624 | len = netlink_send(fd, incoming_cn_msg); |
| 1625 | if (len < 0) { |
| 1626 | syslog(LOG_ERR, "net_link send failed; error:%d", len); |
Ben Hutchings | 6bb22fe | 2012-09-05 14:37:36 -0700 | [diff] [blame] | 1627 | exit(EXIT_FAILURE); |
Ky Srinivasan | cc04acf | 2010-12-16 18:56:54 -0700 | [diff] [blame] | 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | } |