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netconfig: Obtain all currently assigned IPv4 addresses

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This commit is contained in:
Tim Kourt 2019-06-25 15:20:55 -07:00 committed by Denis Kenzior
parent 9b0838d07c
commit 1368851611
3 changed files with 49 additions and 0 deletions
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25
src/netconfig.c
View File

@ -195,6 +195,22 @@ static void netconfig_ifaddr_notify(uint16_t type, const void *data,
}
}
static void netconfig_ifaddr_cmd_cb(int error, uint16_t type,
const void *data, uint32_t len,
void *user_data)
{
if (error) {
l_error("netconfig: ifaddr command failure. "
"Error %d: %s", error, strerror(-error));
return;
}
if (type != RTM_NEWADDR)
return;
netconfig_ifaddr_notify(type, data, len, user_data);
}
bool netconfig_ifindex_add(uint32_t ifindex)
{
struct netconfig *netconfig;
@ -272,6 +288,15 @@ static int netconfig_init(void)
return r;
}
r = rtnl_ifaddr_get(rtnl, netconfig_ifaddr_cmd_cb, NULL, NULL);
if (!r) {
l_error("netconfig: Failed to get addresses from RTNL link.");
l_netlink_destroy(rtnl);
rtnl = NULL;
return r;
}
netconfig_list = l_queue_new();
return 0;

21
src/rtnlutil.c
View File

@ -110,3 +110,24 @@ void rtnl_ifaddr_extract(const struct ifaddrmsg *ifa, int bytes,
}
}
}
uint32_t rtnl_ifaddr_get(struct l_netlink *rtnl, l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy)
{
struct ifaddrmsg *rtmmsg;
uint32_t id;
rtmmsg = l_malloc(sizeof(struct ifaddrmsg));
explicit_bzero(rtmmsg, sizeof(struct ifaddrmsg));
rtmmsg->ifa_family = AF_INET;
id = l_netlink_send(rtnl, RTM_GETADDR, NLM_F_DUMP, rtmmsg,
sizeof(struct ifaddrmsg), cb, user_data,
destroy);
l_free(rtmmsg);
return id;
}

3
src/rtnlutil.h
View File

@ -28,3 +28,6 @@ uint32_t rtnl_set_linkmode_and_operstate(struct l_netlink *rtnl, int ifindex,
void rtnl_ifaddr_extract(const struct ifaddrmsg *ifa, int bytes,
char **label, char **ip, char **broadcast);
uint32_t rtnl_ifaddr_get(struct l_netlink *rtnl, l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy);