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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>
This commit is contained in:
K. Y. Srinivasan 2012-09-05 13:50:15 -07:00 committed by Greg Kroah-Hartman
parent 4a3b97e579
commit 16e87100e6
1 changed files with 90 additions and 3 deletions
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93
tools/hv/hv_kvp_daemon.c
View File

@ -603,6 +603,69 @@ static char *kvp_if_name_to_mac(char *if_name)
}
/*
* Retrieve the interface name given tha MAC address.
*/
static char *kvp_mac_to_if_name(char *mac)
{
DIR *dir;
struct dirent *entry;
FILE *file;
char *p, *q, *x;
char *if_name = NULL;
char buf[256];
char *kvp_net_dir = "/sys/class/net/";
char dev_id[256];
int i;
dir = opendir(kvp_net_dir);
if (dir == NULL)
return NULL;
snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
q = dev_id + strlen(kvp_net_dir);
while ((entry = readdir(dir)) != NULL) {
/*
* Set the state for the next pass.
*/
*q = '\0';
strcat(dev_id, entry->d_name);
strcat(dev_id, "/address");
file = fopen(dev_id, "r");
if (file == NULL)
continue;
p = fgets(buf, sizeof(buf), file);
if (p) {
x = strchr(p, '\n');
if (x)
*x = '\0';
for (i = 0; i < strlen(p); i++)
p[i] = toupper(p[i]);
if (!strcmp(p, mac)) {
/*
* Found the MAC match; return the interface
* name. The caller will free the memory.
*/
if_name = strdup(entry->d_name);
fclose(file);
break;
}
}
fclose(file);
}
closedir(dir);
return if_name;
}
static void kvp_process_ipconfig_file(char *cmd,
char *config_buf, int len,
int element_size, int offset)
@ -749,10 +812,10 @@ static int kvp_process_ip_address(void *addrp,
}
if ((length - *offset) < addr_length + 1)
return 1;
return HV_E_FAIL;
if (str == NULL) {
strcpy(buffer, "inet_ntop failed\n");
return 1;
return HV_E_FAIL;
}
if (*offset == 0)
strcpy(buffer, tmp);
@ -796,7 +859,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
if (getifaddrs(&ifap)) {
strcpy(buffer, "getifaddrs failed\n");
return 1;
return HV_E_FAIL;
}
curp = ifap;
@ -1386,6 +1449,30 @@ int main(void)
}
switch (op) {
case KVP_OP_GET_IP_INFO:
kvp_ip_val = &hv_msg->body.kvp_ip_val;
if_name =
kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
if (if_name == NULL) {
/*
* We could not map the mac address to an
* interface name; return error.
*/
hv_msg->error = HV_E_FAIL;
break;
}
error = kvp_get_ip_info(
0, if_name, KVP_OP_GET_IP_INFO,
kvp_ip_val,
(MAX_IP_ADDR_SIZE * 2));
if (error)
hv_msg->error = error;
free(if_name);
break;
case KVP_OP_SET_IP_INFO:
kvp_ip_val = &hv_msg->body.kvp_ip_val;
if_name = kvp_get_if_name(