@@ -27,6 +27,8 @@
#include "netlink.h"
#include "debugfs.h"
+#define IFACE_STATUS_LEN 256
+
static struct globals vis_globals;
struct vis_netlink_opts {
@@ -435,6 +437,131 @@ err_free_sock:
return err;
}
+static int get_iface_status_netlink_parse(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[NUM_BATADV_ATTR];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ char *iface_status = arg;
+ struct genlmsghdr *ghdr;
+
+ if (!genlmsg_valid_hdr(nlh, 0))
+ return NL_OK;
+
+ ghdr = nlmsg_data(nlh);
+ if (ghdr->cmd != BATADV_CMD_GET_HARDIF)
+ return NL_OK;
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), batadv_netlink_policy))
+ return NL_OK;
+
+ if (attrs[BATADV_ATTR_ACTIVE])
+ strncpy(iface_status, "active\n", IFACE_STATUS_LEN);
+ else
+ strncpy(iface_status, "inactive\n", IFACE_STATUS_LEN);
+
+ iface_status[IFACE_STATUS_LEN - 1] = '\0';
+
+ return NL_STOP;
+}
+
+static char *get_iface_status_netlink(unsigned int meshif, unsigned int hardif,
+ char *iface_status)
+{
+ char *ret_status = NULL;
+ struct nl_sock *sock;
+ struct nl_msg *msg;
+ int batadv_family;
+ struct nl_cb *cb;
+ int ret;
+
+ iface_status[0] = '\0';
+
+ sock = nl_socket_alloc();
+ if (!sock)
+ return NULL;
+
+ ret = genl_connect(sock);
+ if (ret < 0)
+ goto err_free_sock;
+
+ batadv_family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
+ if (batadv_family < 0)
+ goto err_free_sock;
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!cb)
+ goto err_free_sock;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_iface_status_netlink_parse,
+ iface_status);
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto err_free_cb;
+
+ genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, batadv_family,
+ 0, 0, BATADV_CMD_GET_HARDIF, 1);
+
+ nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, meshif);
+ nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, hardif);
+
+ ret = nl_send_auto_complete(sock, msg);
+ if (ret < 0)
+ goto err_free_msg;
+
+ nl_recvmsgs(sock, cb);
+
+ if (strlen(iface_status) > 0)
+ ret_status = iface_status;
+
+err_free_msg:
+ nlmsg_free(msg);
+err_free_cb:
+ nl_cb_put(cb);
+err_free_sock:
+ nl_socket_free(sock);
+
+ return ret_status;
+}
+
+static bool interface_active(unsigned int meshif, unsigned int hardif,
+ const char *ifname)
+{
+ char iface_status[IFACE_STATUS_LEN];
+ char path_buff[PATH_BUFF_LEN];
+ char *file_content = NULL;
+ char *content_newline;
+ bool active = false;
+ char *status;
+
+ status = get_iface_status_netlink(meshif, hardif, iface_status);
+ if (!status) {
+ snprintf(path_buff, sizeof(path_buff), SYS_IFACE_STATUS_FMT,
+ ifname);
+ file_content = read_file(path_buff);
+ if (!file_content)
+ return false;
+
+ status = file_content;
+ }
+
+ content_newline = strstr(status, "\n");
+ if (content_newline)
+ *content_newline = '\0';
+
+ if (strcmp(status, "active") != 0)
+ goto free_file;
+
+ active = true;
+
+free_file:
+ free(file_content);
+ file_content = NULL;
+
+ return active;
+}
+
struct register_interfaces_rtnl_arg {
struct globals *globals;
int ifindex;
@@ -449,10 +576,7 @@ static int register_interfaces_rtnl_parse(struct nl_msg *msg, void *arg)
{
struct register_interfaces_rtnl_arg *register_arg = arg;
struct nlattr *attrs[IFLA_MAX + 1];
- char path_buff[PATH_BUFF_LEN];
struct ifinfomsg *ifm;
- char *content_newline;
- char *file_content;
char *ifname;
int master;
int ret;
@@ -476,23 +600,11 @@ static int register_interfaces_rtnl_parse(struct nl_msg *msg, void *arg)
if (master != register_arg->ifindex)
goto err;
- snprintf(path_buff, PATH_BUFF_LEN, SYS_IFACE_STATUS_FMT, ifname);
- file_content = read_file(path_buff);
- if (!file_content)
- goto free_file;
-
- content_newline = strstr(file_content, "\n");
- if (content_newline)
- *content_newline = '\0';
-
- if (strcmp(file_content, "active") != 0)
+ if (!interface_active(master, ifm->ifi_index, ifname))
goto err;
get_if_index_byname(register_arg->globals, ifname);
-free_file:
- free(file_content);
- file_content = NULL;
err:
return NL_OK;
}