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authorK. Y. Srinivasan2012-09-05 15:50:15 -0500
committerGreg Kroah-Hartman2012-09-10 18:42:33 -0500
commit16e87100e62330cb1e58ee772cacb7d4e6d5b61b (patch)
treefcf248e2d171816927d286b7f0541f78b1ccecdf /tools/hv
parent4a3b97e5799571397ade963c760b7406d8e9a8a6 (diff)
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Tools: hv: Implement the KVP verb - KVP_OP_GET_IP_INFO
Now implement the KVP verb - KVP_OP_GET_IP_INFO. This operation retrieves IP information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/hv')
-rw-r--r--tools/hv/hv_kvp_daemon.c93
1 files changed, 90 insertions, 3 deletions
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 849c43817a2d..c8e101363735 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -603,6 +603,69 @@ static char *kvp_if_name_to_mac(char *if_name)
603} 603}
604 604
605 605
606/*
607 * Retrieve the interface name given tha MAC address.
608 */
609
610static char *kvp_mac_to_if_name(char *mac)
611{
612 DIR *dir;
613 struct dirent *entry;
614 FILE *file;
615 char *p, *q, *x;
616 char *if_name = NULL;
617 char buf[256];
618 char *kvp_net_dir = "/sys/class/net/";
619 char dev_id[256];
620 int i;
621
622 dir = opendir(kvp_net_dir);
623 if (dir == NULL)
624 return NULL;
625
626 snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
627 q = dev_id + strlen(kvp_net_dir);
628
629 while ((entry = readdir(dir)) != NULL) {
630 /*
631 * Set the state for the next pass.
632 */
633 *q = '\0';
634
635 strcat(dev_id, entry->d_name);
636 strcat(dev_id, "/address");
637
638 file = fopen(dev_id, "r");
639 if (file == NULL)
640 continue;
641
642 p = fgets(buf, sizeof(buf), file);
643 if (p) {
644 x = strchr(p, '\n');
645 if (x)
646 *x = '\0';
647
648 for (i = 0; i < strlen(p); i++)
649 p[i] = toupper(p[i]);
650
651 if (!strcmp(p, mac)) {
652 /*
653 * Found the MAC match; return the interface
654 * name. The caller will free the memory.
655 */
656 if_name = strdup(entry->d_name);
657 fclose(file);
658 break;
659 }
660 }
661 fclose(file);
662 }
663
664 closedir(dir);
665 return if_name;
666}
667
668
606static void kvp_process_ipconfig_file(char *cmd, 669static void kvp_process_ipconfig_file(char *cmd,
607 char *config_buf, int len, 670 char *config_buf, int len,
608 int element_size, int offset) 671 int element_size, int offset)
@@ -749,10 +812,10 @@ static int kvp_process_ip_address(void *addrp,
749 } 812 }
750 813
751 if ((length - *offset) < addr_length + 1) 814 if ((length - *offset) < addr_length + 1)
752 return 1; 815 return HV_E_FAIL;
753 if (str == NULL) { 816 if (str == NULL) {
754 strcpy(buffer, "inet_ntop failed\n"); 817 strcpy(buffer, "inet_ntop failed\n");
755 return 1; 818 return HV_E_FAIL;
756 } 819 }
757 if (*offset == 0) 820 if (*offset == 0)
758 strcpy(buffer, tmp); 821 strcpy(buffer, tmp);
@@ -796,7 +859,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
796 859
797 if (getifaddrs(&ifap)) { 860 if (getifaddrs(&ifap)) {
798 strcpy(buffer, "getifaddrs failed\n"); 861 strcpy(buffer, "getifaddrs failed\n");
799 return 1; 862 return HV_E_FAIL;
800 } 863 }
801 864
802 curp = ifap; 865 curp = ifap;
@@ -1386,6 +1449,30 @@ int main(void)
1386 } 1449 }
1387 1450
1388 switch (op) { 1451 switch (op) {
1452 case KVP_OP_GET_IP_INFO:
1453 kvp_ip_val = &hv_msg->body.kvp_ip_val;
1454 if_name =
1455 kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
1456
1457 if (if_name == NULL) {
1458 /*
1459 * We could not map the mac address to an
1460 * interface name; return error.
1461 */
1462 hv_msg->error = HV_E_FAIL;
1463 break;
1464 }
1465 error = kvp_get_ip_info(
1466 0, if_name, KVP_OP_GET_IP_INFO,
1467 kvp_ip_val,
1468 (MAX_IP_ADDR_SIZE * 2));
1469
1470 if (error)
1471 hv_msg->error = error;
1472
1473 free(if_name);
1474 break;
1475
1389 case KVP_OP_SET_IP_INFO: 1476 case KVP_OP_SET_IP_INFO:
1390 kvp_ip_val = &hv_msg->body.kvp_ip_val; 1477 kvp_ip_val = &hv_msg->body.kvp_ip_val;
1391 if_name = kvp_get_if_name( 1478 if_name = kvp_get_if_name(