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darwin/*bsd net_interface_ipv6_config impl

This commit is contained in:
Doug MacEachern 2009-07-25 08:00:24 -07:00
parent 9d50d859bf
commit 8411da271e
1 changed files with 82 additions and 1 deletions
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83
src/os/darwin/darwin_sigar.c
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@ -2593,10 +2593,91 @@ int sigar_net_interface_list_get(sigar_t *sigar,
return sigar_ifmsg_iter(sigar, &iter);
}
#include <ifaddrs.h>
#define SIN6(s) ((struct sockaddr_in6 *)(s))
/* in6_prefixlen derived from freebsd/sbin/ifconfig/af_inet6.c */
static int sigar_in6_prefixlen(struct sockaddr *netmask)
{
u_char *name = (u_char *)&SIN6(netmask)->sin6_addr;
int size = sizeof(SIN6(netmask)->sin6_addr);
int byte, bit, plen = 0;
for (byte = 0; byte < size; byte++, plen += 8) {
if (name[byte] != 0xff) {
break;
}
}
if (byte == size) {
return plen;
}
for (bit = 7; bit != 0; bit--, plen++) {
if (!(name[byte] & (1 << bit))) {
break;
}
}
for (; bit != 0; bit--) {
if (name[byte] & (1 << bit)) {
return 0;
}
}
byte++;
for (; byte < size; byte++) {
if (name[byte]) {
return 0;
}
}
return plen;
}
int sigar_net_interface_ipv6_config_get(sigar_t *sigar, const char *name,
sigar_net_interface_config_t *ifconfig)
{
return SIGAR_ENOTIMPL;
int status = SIGAR_ENOENT;
struct ifaddrs *addrs, *ifa;
if (getifaddrs(&addrs) != 0) {
return errno;
}
for (ifa=addrs; ifa; ifa=ifa->ifa_next) {
if (ifa->ifa_addr &&
(ifa->ifa_addr->sa_family == AF_INET6) &&
strEQ(ifa->ifa_name, name))
{
status = SIGAR_OK;
break;
}
}
if (status == SIGAR_OK) {
struct in6_addr *addr = &SIN6(ifa->ifa_addr)->sin6_addr;
sigar_net_address6_set(ifconfig->address6, addr);
ifconfig->prefix_length = sigar_in6_prefixlen(ifa->ifa_netmask);
if (IN6_IS_ADDR_LINKLOCAL(addr)) {
ifconfig->scope = SIGAR_IPV6_ADDR_LINKLOCAL;
}
else if (IN6_IS_ADDR_SITELOCAL(addr)) {
ifconfig->scope = SIGAR_IPV6_ADDR_SITELOCAL;
}
else if (IN6_IS_ADDR_V4COMPAT(addr)) {
ifconfig->scope = SIGAR_IPV6_ADDR_COMPATv4;
}
else if (IN6_IS_ADDR_LOOPBACK(addr)) {
ifconfig->scope = SIGAR_IPV6_ADDR_LOOPBACK;
}
else {
ifconfig->scope = SIGAR_IPV6_ADDR_ANY;
}
}
freeifaddrs(addrs);
return status;
}
int sigar_net_interface_config_get(sigar_t *sigar, const char *name,