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-rw-r--r--src/network/networkd-wait-online-link.c156
-rw-r--r--src/network/networkd-wait-online-link.h46
-rw-r--r--src/network/networkd-wait-online-manager.c304
-rw-r--r--src/network/networkd-wait-online.c188
-rw-r--r--src/network/networkd-wait-online.h19
5 files changed, 537 insertions, 176 deletions
diff --git a/src/network/networkd-wait-online-link.c b/src/network/networkd-wait-online-link.c
new file mode 100644
index 0000000000..9dc95f577c
--- /dev/null
+++ b/src/network/networkd-wait-online-link.c
@@ -0,0 +1,156 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+ Copyright 2014 Tom Gundersen
+
+ 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 <net/if.h>
+
+#include "sd-network.h"
+#include "strv.h"
+
+#include "networkd-wait-online-link.h"
+
+int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
+ _cleanup_(link_freep) Link *l = NULL;
+ int r;
+
+ assert(m);
+ assert(ifindex > 0);
+
+ r = hashmap_ensure_allocated(&m->links, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = hashmap_ensure_allocated(&m->links_by_name,
+ string_hash_func, string_compare_func);
+ if (r < 0)
+ return r;
+
+ l = new0(Link, 1);
+ if (!l)
+ return -ENOMEM;
+
+ l->manager = m;
+
+ l->ifname = strdup(ifname);
+ if (!l->ifname)
+ return -ENOMEM;
+
+ r = hashmap_put(m->links_by_name, l->ifname, l);
+ if (r < 0)
+ return r;
+
+ l->ifindex = ifindex;
+
+ r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
+ if (r < 0)
+ return r;
+
+ if (ret)
+ *ret = l;
+ l = NULL;
+
+ return 0;
+}
+
+Link *link_free(Link *l) {
+
+ if (!l)
+ return NULL;
+
+ if (l->manager) {
+ hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
+ hashmap_remove(l->manager->links_by_name, l->ifname);
+ }
+
+ free(l->ifname);
+ free(l);
+ return NULL;
+ }
+
+int link_update_rtnl(Link *l, sd_rtnl_message *m) {
+ char *ifname;
+ int r;
+
+ assert(l);
+ assert(l->manager);
+ assert(m);
+
+ r = sd_rtnl_message_link_get_flags(m, &l->flags);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname);
+ if (r < 0)
+ return r;
+
+ if (!streq(l->ifname, ifname)) {
+ char *new_ifname;
+
+ new_ifname = strdup(ifname);
+ if (!new_ifname)
+ return -ENOMEM;
+
+ hashmap_remove(l->manager->links_by_name, l->ifname);
+ free(l->ifname);
+ l->ifname = new_ifname;
+
+ r = hashmap_put(l->manager->links_by_name, l->ifname, l);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int link_update_monitor(Link *l) {
+ assert(l);
+
+ free(l->operational_state);
+ l->operational_state = NULL;
+
+ sd_network_get_link_operational_state(l->ifindex, &l->operational_state);
+
+ free(l->state);
+ l->state = NULL;
+
+ sd_network_get_link_state(l->ifindex, &l->state);
+
+ return 0;
+}
+
+bool link_relevant(Link *l) {
+ assert(l);
+
+ /* A link is relevant if it isn't a loopback device and has at
+ * least one relevant IP address */
+
+ if (l->flags & IFF_LOOPBACK)
+ return false;
+/*
+ if (l->operational_state && !STR_IN_SET(l->operational_state, "unknown", "degraded", "routable"))
+ return false;
+
+ LIST_FOREACH(addresses, a, l->addresses)
+ if (link_address_relevant(a))
+ return true;
+*/
+ return true;
+}
diff --git a/src/network/networkd-wait-online-link.h b/src/network/networkd-wait-online-link.h
new file mode 100644
index 0000000000..90ea6b3405
--- /dev/null
+++ b/src/network/networkd-wait-online-link.h
@@ -0,0 +1,46 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+ Copyright 2014 Tom Gundersen
+
+ 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/>.
+***/
+
+typedef struct Link Link;
+
+#include "networkd-wait-online.h"
+
+struct Link {
+ Manager *manager;
+
+ int ifindex;
+ char *ifname;
+ unsigned flags;
+
+ char *operational_state;
+ char *state;
+};
+
+int link_new(Manager *m, Link **ret, int ifindex, const char *ifname);
+Link *link_free(Link *l);
+int link_update_rtnl(Link *l, sd_rtnl_message *m);
+int link_update_monitor(Link *l);
+bool link_relevant(Link *l);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
diff --git a/src/network/networkd-wait-online-manager.c b/src/network/networkd-wait-online-manager.c
new file mode 100644
index 0000000000..649a21c80c
--- /dev/null
+++ b/src/network/networkd-wait-online-manager.c
@@ -0,0 +1,304 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 <netinet/ether.h>
+#include <linux/if.h>
+
+#include "rtnl-util.h"
+
+#include "network-util.h"
+#include "network-internal.h"
+#include "networkd-wait-online-link.h"
+#include "networkd-wait-online.h"
+
+#include "util.h"
+
+bool manager_all_configured(Manager *m) {
+ Iterator i;
+ Link *l;
+ char **ifname;
+ bool one_ready = false;
+
+ /* wait for all the links given on the commandline 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 (!link_relevant(l)) {
+ log_info("ignore irrelevant link: %s", l->ifname);
+ continue;
+ }
+
+ if (!l->state) {
+ log_debug("link %s has not yet been processed by udev",
+ l->ifname);
+ return false;
+ }
+
+ if (streq(l->state, "configuring")) {
+ 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_rtnl *rtnl, sd_rtnl_message *mm, void *userdata) {
+ Manager *m = userdata;
+ uint16_t type;
+ Link *l;
+ char *ifname;
+ int ifindex, r;
+
+ assert(rtnl);
+ assert(m);
+ assert(mm);
+
+ r = sd_rtnl_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_rtnl_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("Failed to process RTNL link message: %s", strerror(-r));
+ return 0;
+}
+
+static int on_rtnl_event(sd_rtnl *rtnl, sd_rtnl_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_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+ sd_rtnl_message *i;
+ int r;
+
+ assert(m);
+
+ /* First, subscibe to interfaces coming and going */
+ r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, RTNLGRP_IPV6_IFADDR);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, on_rtnl_event, m);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_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_rtnl_message_request_dump(req, true);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_call(m->rtnl, req, 0, &reply);
+ if (r < 0)
+ return r;
+
+ for (i = reply; i; i = sd_rtnl_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("Failed to update monitor information for %i: %s", l->ifindex, strerror(-r));
+ }
+
+ 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) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int r;
+
+ assert(ret);
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ m->interfaces = interfaces;
+
+ 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);
+
+ 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_rtnl_unref(m->rtnl);
+
+ sd_event_unref(m->event);
+ free(m);
+
+ return;
+}
diff --git a/src/network/networkd-wait-online.c b/src/network/networkd-wait-online.c
index c4783ca2e9..d588935e93 100644
--- a/src/network/networkd-wait-online.c
+++ b/src/network/networkd-wait-online.c
@@ -1,4 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
@@ -19,23 +18,13 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <netinet/ether.h>
-#include <linux/if.h>
#include <getopt.h>
-#include "sd-event.h"
-#include "event-util.h"
-#include "sd-rtnl.h"
-#include "rtnl-util.h"
#include "sd-daemon.h"
-#include "sd-network.h"
-#include "network-util.h"
-#include "network-internal.h"
+
#include "networkd-wait-online.h"
-#include "conf-parser.h"
#include "strv.h"
-#include "util.h"
#include "build.h"
static bool arg_quiet = false;
@@ -106,129 +95,16 @@ static int parse_argv(int argc, char *argv[]) {
return 1;
}
-static bool all_configured(Manager *m) {
- _cleanup_free_ unsigned *indices = NULL;
- char **ifname;
- bool one_ready = false;
- int r, n, i;
-
- n = sd_network_get_ifindices(&indices);
- if (n <= 0)
- return false;
-
- /* wait for networkd to be aware of all the links given on the commandline */
- STRV_FOREACH(ifname, arg_interfaces) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL, *reply = NULL;
- bool found = false;
- int index;
-
- r = sd_rtnl_message_new_link(m->rtnl, &message, RTM_GETLINK, 0);
- if (r < 0) {
- log_warning("could not create GETLINK message: %s", strerror(-r));
- return false;
- }
-
- r = sd_rtnl_message_append_string(message, IFLA_IFNAME, *ifname);
- if (r < 0) {
- log_warning("could not attach ifname to GETLINK message: %s", strerror(-r));
- return false;
- }
-
- r = sd_rtnl_call(m->rtnl, message, 0, &reply);
- if (r < 0) {
- if (r != -ENODEV)
- log_warning("could not get link info for %s: %s", *ifname,
- strerror(-r));
-
- /* link does not yet exist */
- return false;
- }
-
- r = sd_rtnl_message_link_get_ifindex(reply, &index);
- if (r < 0) {
- log_warning("could not get ifindex: %s", strerror(-r));
- return false;
- }
-
- if (index <= 0) {
- log_warning("invalid ifindex %d for %s", index, *ifname);
- return false;
- }
-
- for (i = 0; i < n; i++) {
- if (indices[i] == (unsigned) index) {
- found = true;
- break;
- }
- }
-
- if (!found) {
- /* link exists, but networkd is not yet aware of it */
- return false;
- }
- }
-
- /* wait for all links networkd manages to be in admin state 'configured'
- and at least one link to gain a carrier */
- for (i = 0; i < n; i++) {
- _cleanup_free_ char *state = NULL, *oper_state = NULL;
-
- if (sd_network_link_is_loopback(indices[i]))
- /* ignore loopback devices */
- continue;
-
- r = sd_network_get_link_state(indices[i], &state);
- if (r == -EBUSY || (r >= 0 && !streq(state, "configured")))
- /* not yet processed by udev, or managed by networkd, but not yet configured */
- return false;
-
- r = sd_network_get_link_operational_state(indices[i], &oper_state);
- if (r >= 0 &&
- (streq(oper_state, "degraded") ||
- streq(oper_state, "routable")))
- /* we wait for at least one link to be ready,
- regardless of who manages it */
- one_ready = true;
- }
-
- return one_ready;
-}
-
-static int monitor_event_handler(sd_event_source *s, int fd, uint32_t revents,
- void *userdata) {
- Manager *m = userdata;
-
- assert(m);
- assert(m->event);
-
- if (all_configured(m))
- sd_event_exit(m->event, 0);
-
- sd_network_monitor_flush(m->monitor);
-
- return 1;
-}
-
-void manager_free(Manager *m) {
- if (!m)
- return;
-
- sd_event_unref(m->event);
- sd_rtnl_unref(m->rtnl);
-
- free(m);
-}
-
int main(int argc, char *argv[]) {
- _cleanup_manager_free_ Manager *m = NULL;
- _cleanup_event_source_unref_ sd_event_source *event_source = NULL;
- int r, fd, events;
-
- umask(0022);
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int r;
+ log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
+ umask(0022);
+
r = parse_argv(argc, argv);
if (r <= 0)
return r;
@@ -236,50 +112,17 @@ int main(int argc, char *argv[]) {
if (arg_quiet)
log_set_max_level(LOG_WARNING);
- m = new0(Manager, 1);
- if (!m)
- return log_oom();
+ assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- r = sd_event_new(&m->event);
+ r = manager_new(&m, arg_interfaces);
if (r < 0) {
- log_error("Could not create event: %s", strerror(-r));
- goto out;
+ log_error("Could not create manager: %s", strerror(-r));
+ goto finish;
}
- r = sd_rtnl_open(&m->rtnl, 0);
- if (r < 0) {
- log_error("Could not create rtnl: %s", strerror(-r));
- goto out;
- }
-
- r = sd_network_monitor_new(&m->monitor, NULL);
- if (r < 0) {
- log_error("Could not create monitor: %s", strerror(-r));
- goto out;
- }
-
- fd = sd_network_monitor_get_fd(m->monitor);
- if (fd < 0) {
- log_error("Could not get monitor fd: %s", strerror(-r));
- goto out;
- }
-
- events = sd_network_monitor_get_events(m->monitor);
- if (events < 0) {
- log_error("Could not get monitor events: %s", strerror(-r));
- goto out;
- }
-
- r = sd_event_add_io(m->event, &event_source, fd, events, &monitor_event_handler,
- m);
- if (r < 0) {
- log_error("Could not add io event source: %s", strerror(-r));
- goto out;
- }
-
- if (all_configured(m)) {
+ if (manager_all_configured(m)) {
r = 0;
- goto out;
+ goto finish;
}
sd_notify(false,
@@ -289,12 +132,11 @@ int main(int argc, char *argv[]) {
r = sd_event_loop(m->event);
if (r < 0) {
log_error("Event loop failed: %s", strerror(-r));
- goto out;
+ goto finish;
}
-out:
- sd_notify(false,
- "STATUS=All interfaces configured...");
+finish:
+ sd_notify(false, "STATUS=All interfaces configured...");
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
diff --git a/src/network/networkd-wait-online.h b/src/network/networkd-wait-online.h
index e894351d2e..c57f902e9e 100644
--- a/src/network/networkd-wait-online.h
+++ b/src/network/networkd-wait-online.h
@@ -23,16 +23,29 @@
#include "sd-event.h"
#include "sd-rtnl.h"
+#include "sd-network.h"
#include "util.h"
+#include "hashmap.h"
typedef struct Manager {
- sd_event *event;
+ Hashmap *links;
+ Hashmap *links_by_name;
+
+ char **interfaces;
+
sd_rtnl *rtnl;
- sd_network_monitor *monitor;
+ sd_event_source *rtnl_event_source;
+
+ sd_network_monitor *network_monitor;
+ sd_event_source *network_monitor_event_source;
+
+ sd_event *event;
} Manager;
void manager_free(Manager *m);
+int manager_new(Manager **ret, char **interfaces);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
-#define _cleanup_manager_free_ _cleanup_(manager_freep)
+
+bool manager_all_configured(Manager *m);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-14 01:25:07 +0000