mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-18 10:56:53 +00:00
62 lines
2 KiB
Diff
62 lines
2 KiB
Diff
diff --git a/src/nm-netlink-monitor.c b/src/nm-netlink-monitor.c
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index ba8053e..5ac39d3 100644
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--- a/src/nm-netlink-monitor.c
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+++ b/src/nm-netlink-monitor.c
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@@ -177,40 +177,15 @@ link_msg_handler (struct nl_object *obj, void *arg)
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static int
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event_msg_recv (struct nl_msg *msg, void *arg)
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{
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- struct nl_sock *nlh = arg;
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- struct nlmsghdr *hdr = nlmsg_hdr (msg);
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struct ucred *creds = nlmsg_get_creds (msg);
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- const struct sockaddr_nl *snl;
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- guint32 local_port;
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- gboolean accept_msg = FALSE;
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-
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- /* Only messages sent from the kernel */
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- if (!creds || creds->uid != 0) {
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- nm_log_dbg (LOGD_HW, "ignoring netlink message from UID %d",
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- creds ? creds->uid : -1);
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- return NL_SKIP;
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- }
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-
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- snl = nlmsg_get_src (msg);
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- g_assert (snl);
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-
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- /* Accept any messages from the kernel */
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- if (hdr->nlmsg_pid == 0 || snl->nl_pid == 0)
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- accept_msg = TRUE;
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- /* And any multicast message directed to our netlink PID, since multicast
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- * currently requires CAP_ADMIN to use.
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- */
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- local_port = nl_socket_get_local_port (nlh);
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- if ((hdr->nlmsg_pid == local_port) && snl->nl_groups)
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- accept_msg = TRUE;
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-
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- if (accept_msg == FALSE) {
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- nm_log_dbg (LOGD_HW, "ignoring netlink message from PID %d (local PID %d, multicast %d)",
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- hdr->nlmsg_pid,
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- local_port,
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- (hdr->nlmsg_flags & NLM_F_MULTI));
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- return NL_SKIP;
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+ if (!creds || creds->pid || creds->uid || creds->gid) {
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+ if (creds)
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+ nm_log_dbg (LOGD_HW, "netlink: received non-kernel message (pid %d uid %d gid %d)",
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+ creds->pid, creds->uid, creds->gid);
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+ else
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+ nm_log_dbg (LOGD_HW, "netlink: received message without credentials");
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+ return NL_STOP;
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}
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return NL_OK;
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@@ -285,7 +260,7 @@ nlh_setup (struct nl_sock *nlh,
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{
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int err;
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- nl_socket_modify_cb (nlh, NL_CB_MSG_IN, NL_CB_CUSTOM, event_msg_recv, cb_data);
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+ nl_socket_modify_cb (nlh, NL_CB_MSG_IN, NL_CB_CUSTOM, event_msg_recv, NULL);
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if (valid_func)
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nl_socket_modify_cb (nlh, NL_CB_VALID, NL_CB_CUSTOM, valid_func, cb_data);
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