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Tools: hv: Prepare to expand kvp_get_ip_address() functionality

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kvp_get_ip_address() implemented the functionality to retrieve IP address info.
Make this function more generic so that we could retrieve additional
per-interface information.

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 2012-08-16 18:32:13 -07:00 committed by Greg Kroah-Hartman
parent 03db7724af
commit 0ecaa1985e
1 changed files with 82 additions and 43 deletions
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67
tools/hv/hv_kvp_daemon.c
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@ -492,7 +492,8 @@ done:
}
static int
kvp_get_ip_address(int family, char *buffer, int length)
kvp_get_ip_address(int family, char *if_name, int op,
void *out_buffer, int length)
{
struct ifaddrs *ifap;
struct ifaddrs *curp;
@ -502,10 +503,19 @@ kvp_get_ip_address(int family, char *buffer, int length)
const char *str;
char tmp[50];
int error = 0;
char *buffer;
struct hv_kvp_ipaddr_value *ip_buffer;
if (op == KVP_OP_ENUMERATE) {
buffer = out_buffer;
} else {
ip_buffer = out_buffer;
buffer = (char *)ip_buffer->ip_addr;
ip_buffer->addr_family = 0;
}
/*
* On entry into this function, the buffer is capable of holding the
* maximum key value (2048 bytes).
* maximum key value.
*/
if (getifaddrs(&ifap)) {
@ -515,14 +525,43 @@ kvp_get_ip_address(int family, char *buffer, int length)
curp = ifap;
while (curp != NULL) {
if ((curp->ifa_addr != NULL) &&
(curp->ifa_addr->sa_family == family)) {
if (family == AF_INET) {
if (curp->ifa_addr == NULL) {
curp = curp->ifa_next;
continue;
}
if ((if_name != NULL) &&
(strncmp(curp->ifa_name, if_name, strlen(if_name)))) {
/*
* We want info about a specific interface;
* just continue.
*/
curp = curp->ifa_next;
continue;
}
/*
* We only support two address families: AF_INET and AF_INET6.
* If a family value of 0 is specified, we collect both
* supported address families; if not we gather info on
* the specified address family.
*/
if ((family != 0) && (curp->ifa_addr->sa_family != family)) {
curp = curp->ifa_next;
continue;
}
if ((curp->ifa_addr->sa_family != AF_INET) &&
(curp->ifa_addr->sa_family != AF_INET6)) {
curp = curp->ifa_next;
continue;
}
if ((curp->ifa_addr->sa_family == AF_INET) &&
((family == AF_INET) || (family == 0))) {
struct sockaddr_in *addr =
(struct sockaddr_in *) curp->ifa_addr;
str = inet_ntop(family, &addr->sin_addr,
tmp, 50);
str = inet_ntop(AF_INET, &addr->sin_addr, tmp, 50);
if (str == NULL) {
strcpy(buffer, "inet_ntop failed\n");
error = 1;
@ -538,7 +577,7 @@ kvp_get_ip_address(int family, char *buffer, int length)
if ((length - offset) < (ipv4_len + 1))
goto getaddr_done;
} else {
} else if ((family == AF_INET6) || (family == 0)) {
/*
* We only support AF_INET and AF_INET6
@ -547,7 +586,7 @@ kvp_get_ip_address(int family, char *buffer, int length)
struct sockaddr_in6 *addr =
(struct sockaddr_in6 *) curp->ifa_addr;
str = inet_ntop(family,
str = inet_ntop(AF_INET6,
&addr->sin6_addr.s6_addr,
tmp, 50);
if (str == NULL) {
@ -566,7 +605,7 @@ kvp_get_ip_address(int family, char *buffer, int length)
}
}
curp = curp->ifa_next;
}
@ -811,13 +850,13 @@ int main(void)
strcpy(key_value, lic_version);
break;
case NetworkAddressIPv4:
kvp_get_ip_address(AF_INET, key_value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
kvp_get_ip_address(AF_INET, NULL, KVP_OP_ENUMERATE,
key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
strcpy(key_name, "NetworkAddressIPv4");
break;
case NetworkAddressIPv6:
kvp_get_ip_address(AF_INET6, key_value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
kvp_get_ip_address(AF_INET6, NULL, KVP_OP_ENUMERATE,
key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
strcpy(key_name, "NetworkAddressIPv6");
break;
case OSBuildNumber: