./tools/notsd-move

1 files changed, 337 insertions, 0 deletions

diff --git a/src/grp-network/systemd-networkd-wait-online/networkd-wait-online-manager.c b/src/grp-network/systemd-networkd-wait-online/networkd-wait-online-manager.c
new file mode 100644
index 0000000000..9ec0550d44
--- /dev/null
+++ b/src/grp-network/systemd-networkd-wait-online/networkd-wait-online-manager.c
@@ -0,0 +1,337 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fnmatch.h>
+#include <netinet/ether.h>
+
+#include <linux/if.h>
+
+#include "basic/alloc-util.h"
+#include "basic/time-util.h"
+#include "basic/util.h"
+#include "sd-netlink/netlink-util.h"
+#include "systemd-network/network-internal.h"
+
+#include "networkd-wait-online-link.h"
+#include "networkd-wait-online.h"
+
+bool manager_ignore_link(Manager *m, Link *link) {
+        char **ignore;
+
+        assert(m);
+        assert(link);
+
+        /* always ignore the loopback interface */
+        if (link->flags & IFF_LOOPBACK)
+                return true;
+
+        /* if interfaces are given on the command line, ignore all others */
+        if (m->interfaces && !strv_contains(m->interfaces, link->ifname))
+                return true;
+
+        /* ignore interfaces we explicitly are asked to ignore */
+        STRV_FOREACH(ignore, m->ignore)
+                if (fnmatch(*ignore, link->ifname, 0) == 0)
+                        return true;
+
+        return false;
+}
+
+bool manager_all_configured(Manager *m) {
+        Iterator i;
+        Link *l;
+        char **ifname;
+        bool one_ready = false;
+
+        /* wait for all the links given on the command line to appear */
+        STRV_FOREACH(ifname, m->interfaces) {
+                l = hashmap_get(m->links_by_name, *ifname);
+                if (!l) {
+                        log_debug("still waiting for %s", *ifname);
+                        return false;
+                }
+        }
+
+        /* wait for all links networkd manages to be in admin state 'configured'
+           and at least one link to gain a carrier */
+        HASHMAP_FOREACH(l, m->links, i) {
+                if (manager_ignore_link(m, l)) {
+                        log_info("ignoring: %s", l->ifname);
+                        continue;
+                }
+
+                if (!l->state) {
+                        log_debug("link %s has not yet been processed by udev",
+                                  l->ifname);
+                        return false;
+                }
+
+                if (STR_IN_SET(l->state, "configuring", "pending")) {
+                        log_debug("link %s is being processed by networkd",
+                                  l->ifname);
+                        return false;
+                }
+
+                if (l->operational_state &&
+                    STR_IN_SET(l->operational_state, "degraded", "routable"))
+                        /* we wait for at least one link to be ready,
+                           regardless of who manages it */
+                        one_ready = true;
+        }
+
+        return one_ready;
+}
+
+static int manager_process_link(sd_netlink *rtnl, sd_netlink_message *mm, void *userdata) {
+        Manager *m = userdata;
+        uint16_t type;
+        Link *l;
+        const char *ifname;
+        int ifindex, r;
+
+        assert(rtnl);
+        assert(m);
+        assert(mm);
+
+        r = sd_netlink_message_get_type(mm, &type);
+        if (r < 0)
+                goto fail;
+
+        r = sd_rtnl_message_link_get_ifindex(mm, &ifindex);
+        if (r < 0)
+                goto fail;
+
+        r = sd_netlink_message_read_string(mm, IFLA_IFNAME, &ifname);
+        if (r < 0)
+                goto fail;
+
+        l = hashmap_get(m->links, INT_TO_PTR(ifindex));
+
+        switch (type) {
+
+        case RTM_NEWLINK:
+                if (!l) {
+                        log_debug("Found link %i", ifindex);
+
+                        r = link_new(m, &l, ifindex, ifname);
+                        if (r < 0)
+                                goto fail;
+
+                        r = link_update_monitor(l);
+                        if (r < 0)
+                                goto fail;
+                }
+
+                r = link_update_rtnl(l, mm);
+                if (r < 0)
+                        goto fail;
+
+                break;
+
+        case RTM_DELLINK:
+                if (l) {
+                        log_debug("Removing link %i", l->ifindex);
+                        link_free(l);
+                }
+
+                break;
+        }
+
+        return 0;
+
+fail:
+        log_warning_errno(r, "Failed to process RTNL link message: %m");
+        return 0;
+}
+
+static int on_rtnl_event(sd_netlink *rtnl, sd_netlink_message *mm, void *userdata) {
+        Manager *m = userdata;
+        int r;
+
+        r = manager_process_link(rtnl, mm, m);
+        if (r < 0)
+                return r;
+
+        if (manager_all_configured(m))
+                sd_event_exit(m->event, 0);
+
+        return 1;
+}
+
+static int manager_rtnl_listen(Manager *m) {
+        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
+        sd_netlink_message *i;
+        int r;
+
+        assert(m);
+
+        /* First, subscribe to interfaces coming and going */
+        r = sd_netlink_open(&m->rtnl);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_attach_event(m->rtnl, m->event, 0);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, on_rtnl_event, m);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, on_rtnl_event, m);
+        if (r < 0)
+                return r;
+
+        /* Then, enumerate all links */
+        r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_message_request_dump(req, true);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_call(m->rtnl, req, 0, &reply);
+        if (r < 0)
+                return r;
+
+        for (i = reply; i; i = sd_netlink_message_next(i)) {
+                r = manager_process_link(m->rtnl, i, m);
+                if (r < 0)
+                        return r;
+        }
+
+        return r;
+}
+
+static int on_network_event(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+        Manager *m = userdata;
+        Iterator i;
+        Link *l;
+        int r;
+
+        assert(m);
+
+        sd_network_monitor_flush(m->network_monitor);
+
+        HASHMAP_FOREACH(l, m->links, i) {
+                r = link_update_monitor(l);
+                if (r < 0)
+                        log_warning_errno(r, "Failed to update monitor information for %i: %m", l->ifindex);
+        }
+
+        if (manager_all_configured(m))
+                sd_event_exit(m->event, 0);
+
+        return 0;
+}
+
+static int manager_network_monitor_listen(Manager *m) {
+        int r, fd, events;
+
+        assert(m);
+
+        r = sd_network_monitor_new(&m->network_monitor, NULL);
+        if (r < 0)
+                return r;
+
+        fd = sd_network_monitor_get_fd(m->network_monitor);
+        if (fd < 0)
+                return fd;
+
+        events = sd_network_monitor_get_events(m->network_monitor);
+        if (events < 0)
+                return events;
+
+        r = sd_event_add_io(m->event, &m->network_monitor_event_source,
+                            fd, events, &on_network_event, m);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+int manager_new(Manager **ret, char **interfaces, char **ignore, usec_t timeout) {
+        _cleanup_(manager_freep) Manager *m = NULL;
+        int r;
+
+        assert(ret);
+
+        m = new0(Manager, 1);
+        if (!m)
+                return -ENOMEM;
+
+        m->interfaces = interfaces;
+        m->ignore = ignore;
+
+        r = sd_event_default(&m->event);
+        if (r < 0)
+                return r;
+
+        sd_event_add_signal(m->event, NULL, SIGTERM, NULL,  NULL);
+        sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+
+        if (timeout > 0) {
+                usec_t usec;
+
+                usec = now(clock_boottime_or_monotonic()) + timeout;
+
+                r = sd_event_add_time(m->event, NULL, clock_boottime_or_monotonic(), usec, 0, NULL, INT_TO_PTR(-ETIMEDOUT));
+                if (r < 0)
+                        return r;
+        }
+
+        sd_event_set_watchdog(m->event, true);
+
+        r = manager_network_monitor_listen(m);
+        if (r < 0)
+                return r;
+
+        r = manager_rtnl_listen(m);
+        if (r < 0)
+                return r;
+
+        *ret = m;
+        m = NULL;
+
+        return 0;
+}
+
+void manager_free(Manager *m) {
+        Link *l;
+
+        if (!m)
+                return;
+
+        while ((l = hashmap_first(m->links)))
+               link_free(l);
+        hashmap_free(m->links);
+        hashmap_free(m->links_by_name);
+
+        sd_event_source_unref(m->network_monitor_event_source);
+        sd_network_monitor_unref(m->network_monitor);
+
+        sd_event_source_unref(m->rtnl_event_source);
+        sd_netlink_unref(m->rtnl);
+
+        sd_event_unref(m->event);
+        free(m);
+
+        return;
+}