X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-manager.c;h=ce97ac0778ca7e6a25698bd364ed301dd11ab9e5;hp=013b1dc97561482bbf976cc5cdd0d5681d2218ff;hb=f806f64c7460632d6b6c27865e1554cb6c934320;hpb=d4920165fe753751aaa274fdc568927d26284eea
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index 013b1dc97..ce97ac077 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -19,20 +19,28 @@
along with systemd; If not, see .
***/
-#include
+#include
#include
-#include
+#include "conf-parser.h"
#include "path-util.h"
#include "networkd.h"
+#include "networkd-netdev.h"
+#include "networkd-link.h"
#include "network-internal.h"
#include "libudev-private.h"
#include "udev-util.h"
#include "rtnl-util.h"
+#include "bus-util.h"
+#include "def.h"
#include "mkdir.h"
#include "virt.h"
#include "sd-rtnl.h"
+#include "sd-daemon.h"
+
+/* use 8 MB for receive socket kernel queue. */
+#define RCVBUF_SIZE (8*1024*1024)
const char* const network_dirs[] = {
"/etc/systemd/network",
@@ -43,195 +51,146 @@ const char* const network_dirs[] = {
#endif
NULL};
-static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
- Manager *m = userdata;
+static int setup_default_address_pool(Manager *m) {
+ AddressPool *p;
+ int r;
assert(m);
- log_received_signal(LOG_INFO, si);
-
- sd_event_exit(m->event, 0);
- return 0;
-}
-
-static int setup_signals(Manager *m) {
- sigset_t mask;
- int r;
+ /* Add in the well-known private address ranges. */
- assert(m);
+ r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7);
+ if (r < 0)
+ return r;
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16);
+ if (r < 0)
+ return r;
- r = sd_event_add_signal(m->event, &m->sigterm_event_source, SIGTERM, dispatch_sigterm, m);
+ r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12);
if (r < 0)
return r;
- r = sd_event_add_signal(m->event, &m->sigint_event_source, SIGINT, dispatch_sigterm, m);
+ r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8);
if (r < 0)
return r;
return 0;
}
-static int set_fallback_dns(Manager *m, const char *string) {
- char *word, *state;
- size_t length;
- int r;
+static int on_bus_retry(sd_event_source *s, usec_t usec, void *userdata) {
+ Manager *m = userdata;
+ assert(s);
assert(m);
- assert(string);
- FOREACH_WORD_QUOTED(word, length, string, state) {
- _cleanup_address_free_ Address *address = NULL;
- Address *tail;
- _cleanup_free_ char *addrstr = NULL;
+ m->bus_retry_event_source = sd_event_source_unref(m->bus_retry_event_source);
- r = address_new_dynamic(&address);
- if (r < 0)
- return r;
-
- addrstr = strndup(word, length);
- if (!addrstr)
- return -ENOMEM;
-
- r = net_parse_inaddr(addrstr, &address->family, &address->in_addr);
- if (r < 0) {
- log_debug("Ignoring invalid DNS address '%s'", addrstr);
- continue;
- }
-
- LIST_FIND_TAIL(addresses, m->fallback_dns, tail);
- LIST_INSERT_AFTER(addresses, m->fallback_dns, tail, address);
- address = NULL;
- }
+ manager_connect_bus(m);
return 0;
}
-int manager_new(Manager **ret) {
- _cleanup_manager_free_ Manager *m = NULL;
+static int manager_reset_all(Manager *m) {
+ Link *link;
+ Iterator i;
int r;
- m = new0(Manager, 1);
- if (!m)
- return -ENOMEM;
-
- m->state_file = strdup("/run/systemd/network/state");
- if (!m->state_file)
- return -ENOMEM;
-
- r = set_fallback_dns(m, DNS_SERVERS);
- if (r < 0)
- return r;
-
- r = sd_event_default(&m->event);
- if (r < 0)
- return r;
+ assert(m);
- sd_event_set_watchdog(m->event, true);
+ HASHMAP_FOREACH(link, m->links, i) {
+ r = link_carrier_reset(link);
+ if (r < 0)
+ log_link_warning_errno(link, r, "could not reset carrier: %m");
+ }
- r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
- RTNLGRP_IPV6_IFADDR);
- if (r < 0)
- return r;
+ return 0;
+}
- r = sd_bus_default_system(&m->bus);
- if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */
- return r;
+static int match_prepare_for_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
+ Manager *m = userdata;
+ int b, r;
- r = setup_signals(m);
- if (r < 0)
- return r;
+ assert(bus);
+ assert(bus);
- /* udev does not initialize devices inside containers,
- * so we rely on them being already initialized before
- * entering the container */
- if (detect_container(NULL) <= 0) {
- m->udev = udev_new();
- if (!m->udev)
- return -ENOMEM;
-
- m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
- if (!m->udev_monitor)
- return -ENOMEM;
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m");
+ return 0;
}
- m->kmod_ctx = kmod_new(NULL, NULL);
- if (!m->kmod_ctx)
- return -ENOMEM;
-
- m->links = hashmap_new(uint64_hash_func, uint64_compare_func);
- if (!m->links)
- return -ENOMEM;
-
- m->netdevs = hashmap_new(string_hash_func, string_compare_func);
- if (!m->netdevs)
- return -ENOMEM;
+ if (b)
+ return 0;
- LIST_HEAD_INIT(m->networks);
+ log_debug("Coming back from suspend, resetting all connections...");
- *ret = m;
- m = NULL;
+ manager_reset_all(m);
return 0;
}
-void manager_free(Manager *m) {
- Network *network;
- NetDev *netdev;
- Link *link;
+int manager_connect_bus(Manager *m) {
+ int r;
- if (!m)
- return;
+ assert(m);
- free(m->state_file);
+ r = sd_bus_default_system(&m->bus);
+ if (r == -ENOENT) {
+ /* We failed to connect? Yuck, we must be in early
+ * boot. Let's try in 5s again. As soon as we have
+ * kdbus we can stop doing this... */
- kmod_unref(m->kmod_ctx);
- udev_monitor_unref(m->udev_monitor);
- udev_unref(m->udev);
- sd_bus_unref(m->bus);
- sd_event_source_unref(m->udev_event_source);
- sd_event_source_unref(m->sigterm_event_source);
- sd_event_source_unref(m->sigint_event_source);
- sd_event_unref(m->event);
+ log_debug_errno(r, "Failed to connect to bus, trying again in 5s: %m");
- while ((link = hashmap_first(m->links)))
- link_unref(link);
- hashmap_free(m->links);
+ r = sd_event_add_time(m->event, &m->bus_retry_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + 5*USEC_PER_SEC, 0, on_bus_retry, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to install bus reconnect time event: %m");
- while ((network = m->networks))
- network_free(network);
+ return 0;
+ } if (r < 0)
+ return r;
- while ((netdev = hashmap_first(m->netdevs)))
- netdev_unref(netdev);
- hashmap_free(m->netdevs);
+ r = sd_bus_add_match(m->bus, &m->prepare_for_sleep_slot,
+ "type='signal',"
+ "sender='org.freedesktop.login1',"
+ "interface='org.freedesktop.login1.Manager',"
+ "member='PrepareForSleep',"
+ "path='/org/freedesktop/login1'",
+ match_prepare_for_sleep,
+ m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add match for PrepareForSleep: %m");
- sd_rtnl_unref(m->rtnl);
+ r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add manager object vtable: %m");
- free(m);
-}
+ r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add link object vtable: %m");
-int manager_load_config(Manager *m) {
- int r;
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add link enumerator: %m");
- /* update timestamp */
- paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true);
+ r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add network object vtable: %m");
- r = netdev_load(m);
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to add network enumerator: %m");
- r = network_load(m);
+ r = sd_bus_request_name(m->bus, "org.freedesktop.network1", 0);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to register name: %m");
- return 0;
-}
+ r = sd_bus_attach_event(m->bus, m->event, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop: %m");
-bool manager_should_reload(Manager *m) {
- return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false);
+ return 0;
}
static int manager_udev_process_link(Manager *m, struct udev_device *device) {
@@ -263,34 +222,100 @@ static int manager_udev_process_link(Manager *m, struct udev_device *device) {
return 0;
}
+static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+ struct udev_monitor *monitor = m->udev_monitor;
+ _cleanup_udev_device_unref_ struct udev_device *device = NULL;
+
+ device = udev_monitor_receive_device(monitor);
+ if (!device)
+ return -ENOMEM;
+
+ manager_udev_process_link(m, device);
+ return 0;
+}
+
+static int manager_connect_udev(Manager *m) {
+ int r;
+
+ /* udev does not initialize devices inside containers,
+ * so we rely on them being already initialized before
+ * entering the container */
+ if (detect_container(NULL) > 0)
+ return 0;
+
+ m->udev = udev_new();
+ if (!m->udev)
+ return -ENOMEM;
+
+ m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
+ if (!m->udev_monitor)
+ return -ENOMEM;
+
+ r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL);
+ if (r < 0)
+ return log_error_errno(r, "Could not add udev monitor filter: %m");
+
+ r = udev_monitor_enable_receiving(m->udev_monitor);
+ if (r < 0) {
+ log_error("Could not enable udev monitor");
+ return r;
+ }
+
+ r = sd_event_add_io(m->event,
+ &m->udev_event_source,
+ udev_monitor_get_fd(m->udev_monitor),
+ EPOLLIN, manager_dispatch_link_udev,
+ m);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_description(m->udev_event_source, "networkd-udev");
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
NetDev *netdev = NULL;
uint16_t type;
- char *name;
+ const char *name;
int r, ifindex;
assert(rtnl);
assert(message);
assert(m);
+ if (sd_rtnl_message_is_error(message)) {
+ r = sd_rtnl_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: could not receive link: %m");
+
+ return 0;
+ }
+
r = sd_rtnl_message_get_type(message, &type);
if (r < 0) {
- log_warning("rtnl: could not get message type");
+ log_warning_errno(r, "rtnl: could not get message type: %m");
return 0;
}
r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
- if (r < 0 || ifindex <= 0) {
- log_warning("rtnl: received link message without valid ifindex");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received link message with invalid ifindex: %d", ifindex);
return 0;
} else
link_get(m, ifindex, &link);
r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name);
- if (r < 0 || !name) {
- log_warning("rtnl: received link message without valid ifname");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: received link message without ifname: %m");
return 0;
} else
netdev_get(m, name, &netdev);
@@ -301,7 +326,7 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
/* link is new, so add it */
r = link_add(m, message, &link);
if (r < 0) {
- log_debug("could not add new link");
+ log_warning_errno(r, "could not add new link: %m");
return 0;
}
}
@@ -310,7 +335,7 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
/* netdev exists, so make sure the ifindex matches */
r = netdev_set_ifindex(netdev, message);
if (r < 0) {
- log_debug("could not set ifindex on netdev");
+ log_warning_errno(r, "could not set ifindex on netdev: %m");
return 0;
}
}
@@ -334,273 +359,521 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
return 1;
}
-int manager_rtnl_enumerate_links(Manager *m) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
- sd_rtnl_message *link;
- int r, k;
+static int systemd_netlink_fd(void) {
+ int n, fd, rtnl_fd = -EINVAL;
+
+ n = sd_listen_fds(true);
+ if (n <= 0)
+ return -EINVAL;
+
+ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) {
+ if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) {
+ if (rtnl_fd >= 0)
+ return -EINVAL;
+
+ rtnl_fd = fd;
+ }
+ }
+
+ return rtnl_fd;
+}
+
+static int manager_connect_rtnl(Manager *m) {
+ int fd, r;
assert(m);
- assert(m->rtnl);
- r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
+ fd = systemd_netlink_fd();
+ if (fd < 0)
+ r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, RTNLGRP_IPV6_IFADDR);
+ else
+ r = sd_rtnl_open_fd(&m->rtnl, fd, 0);
if (r < 0)
return r;
- r = sd_rtnl_message_request_dump(req, true);
+ r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
if (r < 0)
return r;
- r = sd_rtnl_call(m->rtnl, req, 0, &reply);
+ r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
if (r < 0)
return r;
- for (link = reply; link; link = sd_rtnl_message_next(link)) {
- uint16_t type;
+ r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m);
+ if (r < 0)
+ return r;
- k = sd_rtnl_message_get_type(link, &type);
- if (k < 0)
- return k;
+ r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
+ if (r < 0)
+ return r;
- if (type != RTM_NEWLINK)
- continue;
+ r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m);
+ if (r < 0)
+ return r;
- k = manager_rtnl_process_link(m->rtnl, link, m);
- if (k < 0)
- r = k;
- }
+ r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m);
+ if (r < 0)
+ return r;
- return r;
+ return 0;
}
-static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
- Manager *m = userdata;
- struct udev_monitor *monitor = m->udev_monitor;
- _cleanup_udev_device_unref_ struct udev_device *device = NULL;
+int manager_new(Manager **ret) {
+ _cleanup_manager_free_ Manager *m = NULL;
+ int r;
- device = udev_monitor_receive_device(monitor);
- if (!device)
+ m = new0(Manager, 1);
+ if (!m)
return -ENOMEM;
- manager_udev_process_link(m, device);
- return 0;
-}
+ m->state_file = strdup("/run/systemd/netif/state");
+ if (!m->state_file)
+ return -ENOMEM;
-int manager_udev_listen(Manager *m) {
- int r;
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ return r;
- if (detect_container(NULL) > 0)
- return 0;
+ sd_event_set_watchdog(m->event, true);
- assert(m->udev_monitor);
+ sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+ sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL);
- if (r < 0) {
- log_error("Could not add udev monitor filter: %s", strerror(-r));
+ r = manager_connect_rtnl(m);
+ if (r < 0)
return r;
- }
- r = udev_monitor_enable_receiving(m->udev_monitor);
- if (r < 0) {
- log_error("Could not enable udev monitor");
+ r = manager_connect_udev(m);
+ if (r < 0)
return r;
- }
- r = sd_event_add_io(m->event,
- &m->udev_event_source,
- udev_monitor_get_fd(m->udev_monitor),
- EPOLLIN, manager_dispatch_link_udev,
- m);
+ m->netdevs = hashmap_new(&string_hash_ops);
+ if (!m->netdevs)
+ return -ENOMEM;
+
+ LIST_HEAD_INIT(m->networks);
+
+ r = setup_default_address_pool(m);
if (r < 0)
return r;
+ *ret = m;
+ m = NULL;
+
return 0;
}
-int manager_rtnl_listen(Manager *m) {
+void manager_free(Manager *m) {
+ Network *network;
+ NetDev *netdev;
+ Link *link;
+ AddressPool *pool;
+
+ if (!m)
+ return;
+
+ free(m->state_file);
+
+ udev_monitor_unref(m->udev_monitor);
+ udev_unref(m->udev);
+ sd_bus_unref(m->bus);
+ sd_bus_slot_unref(m->prepare_for_sleep_slot);
+ sd_event_source_unref(m->udev_event_source);
+ sd_event_source_unref(m->bus_retry_event_source);
+ sd_event_unref(m->event);
+
+ while ((link = hashmap_first(m->links)))
+ link_unref(link);
+ hashmap_free(m->links);
+
+ while ((network = m->networks))
+ network_free(network);
+
+ hashmap_free(m->networks_by_name);
+
+ while ((netdev = hashmap_first(m->netdevs)))
+ netdev_unref(netdev);
+ hashmap_free(m->netdevs);
+
+ while ((pool = m->address_pools))
+ address_pool_free(pool);
+
+ sd_rtnl_unref(m->rtnl);
+
+ free(m);
+}
+
+static bool manager_check_idle(void *userdata) {
+ Manager *m = userdata;
+ Link *link;
+ Iterator i;
+
+ assert(m);
+
+ HASHMAP_FOREACH(link, m->links, i) {
+ /* we are not woken on udev activity, so let's just wait for the
+ * pending udev event */
+ if (link->state == LINK_STATE_PENDING)
+ return false;
+
+ if (!link->network)
+ continue;
+
+ /* we are not woken on netork activity, so let's stay around */
+ if (link_lldp_enabled(link) ||
+ link_ipv4ll_enabled(link) ||
+ link_dhcp4_server_enabled(link) ||
+ link_dhcp4_enabled(link) ||
+ link_dhcp6_enabled(link))
+ return false;
+ }
+
+ return true;
+}
+
+int manager_run(Manager *m) {
+ assert(m);
+
+ if (m->bus)
+ return bus_event_loop_with_idle(
+ m->event,
+ m->bus,
+ "org.freedesktop.network1",
+ DEFAULT_EXIT_USEC,
+ manager_check_idle,
+ m);
+ else
+ /* failed to connect to the bus, so we lose exit-on-idle logic,
+ this should not happen except if dbus is not around at all */
+ return sd_event_loop(m->event);
+}
+
+int manager_load_config(Manager *m) {
int r;
- r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
+ /* update timestamp */
+ paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true);
+
+ r = netdev_load(m);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m);
+ r = network_load(m);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
+ return 0;
+}
+
+bool manager_should_reload(Manager *m) {
+ return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false);
+}
+
+int manager_rtnl_enumerate_links(Manager *m) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+ sd_rtnl_message *link;
+ int r;
+
+ assert(m);
+ assert(m->rtnl);
+
+ r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m);
+ r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m);
+ r = sd_rtnl_call(m->rtnl, req, 0, &reply);
if (r < 0)
return r;
- return 0;
+ for (link = reply; link; link = sd_rtnl_message_next(link)) {
+ int k;
+
+ m->enumerating = true;
+
+ k = manager_rtnl_process_link(m->rtnl, link, m);
+ if (k < 0)
+ r = k;
+
+ m->enumerating = false;
+ }
+
+ return r;
}
-int manager_bus_listen(Manager *m) {
+int manager_rtnl_enumerate_addresses(Manager *m) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+ sd_rtnl_message *addr;
int r;
- assert(m->event);
+ assert(m);
+ assert(m->rtnl);
- if (!m->bus) /* TODO: drop when we can rely on kdbus */
- return 0;
+ r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0);
+ if (r < 0)
+ return r;
- r = sd_bus_attach_event(m->bus, m->event, 0);
+ r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return r;
- return 0;
-}
+ r = sd_rtnl_call(m->rtnl, req, 0, &reply);
+ if (r < 0)
+ return r;
-static void append_dns(FILE *f, struct in_addr *dns, unsigned char family, unsigned *count) {
- char buf[INET6_ADDRSTRLEN];
- const char *address;
+ for (addr = reply; addr; addr = sd_rtnl_message_next(addr)) {
+ int k;
- address = inet_ntop(family, dns, buf, INET6_ADDRSTRLEN);
- if (!address) {
- log_warning("Invalid DNS address. Ignoring.");
- return;
- }
+ m->enumerating = true;
- if (*count == MAXNS)
- fputs("# Too many DNS servers configured, the following entries "
- "will be ignored\n", f);
+ k = link_rtnl_process_address(m->rtnl, addr, m);
+ if (k < 0)
+ r = k;
- fprintf(f, "nameserver %s\n", address);
+ m->enumerating = false;
+ }
- (*count) ++;
+ return r;
}
-int manager_update_resolv_conf(Manager *m) {
- _cleanup_free_ char *temp_path = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- Link *link;
- Iterator i;
- unsigned count = 0;
- const char *domainname = NULL;
+static int set_put_in_addr(Set *s, const struct in_addr *address) {
+ char *p;
int r;
- assert(m);
+ assert(s);
- r = fopen_temporary("/run/systemd/network/resolv.conf", &f, &temp_path);
+ r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p);
if (r < 0)
return r;
- fchmod(fileno(f), 0644);
+ r = set_consume(s, p);
+ if (r == -EEXIST)
+ return 0;
- fputs("# This file is managed by systemd-networkd(8). Do not edit.\n#\n"
- "# Third party programs must not access this file directly, but\n"
- "# only through the symlink at /etc/resolv.conf. To manage\n"
- "# resolv.conf(5) in a different way, replace the symlink by a\n"
- "# static file or a different symlink.\n\n", f);
+ return r;
+}
- HASHMAP_FOREACH(link, m->links, i) {
- if (link->dhcp_lease) {
- struct in_addr *nameservers;
- size_t nameservers_size;
-
- if (link->network->dhcp_dns) {
- r = sd_dhcp_lease_get_dns(link->dhcp_lease, &nameservers, &nameservers_size);
- if (r >= 0) {
- unsigned j;
-
- for (j = 0; j < nameservers_size; j++)
- append_dns(f, &nameservers[j], AF_INET, &count);
- }
- }
+static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) {
+ int r, i, c = 0;
- if (link->network->dhcp_domainname && !domainname) {
- r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
- if (r >= 0)
- fprintf(f, "domain %s\n", domainname);
- }
- }
- }
+ assert(s);
+ assert(n <= 0 || addresses);
- HASHMAP_FOREACH(link, m->links, i) {
- if (link->network && link->network->dns) {
- Address *address;
+ for (i = 0; i < n; i++) {
+ r = set_put_in_addr(s, addresses+i);
+ if (r < 0)
+ return r;
- LIST_FOREACH(addresses, address, link->network->dns) {
- append_dns(f, &address->in_addr.in,
- address->family, &count);
- }
- }
+ c += r;
}
- if (!count) {
- Address *address;
+ return c;
+}
- LIST_FOREACH(addresses, address, m->fallback_dns)
- append_dns(f, &address->in_addr.in,
- address->family, &count);
- }
+static void print_string_set(FILE *f, const char *field, Set *s) {
+ bool space = false;
+ Iterator i;
+ char *p;
- fflush(f);
+ if (set_isempty(s))
+ return;
- if (ferror(f) || rename(temp_path, "/run/systemd/network/resolv.conf") < 0) {
- r = -errno;
- unlink("/run/systemd/network/resolv.conf");
- unlink(temp_path);
- return r;
- }
+ fputs(field, f);
- return 0;
+ SET_FOREACH(p, s, i) {
+ if (space)
+ fputc(' ', f);
+ fputs(p, f);
+ space = true;
+ }
+ fputc('\n', f);
}
int manager_save(Manager *m) {
+ _cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL;
Link *link;
Iterator i;
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
- const char *oper_state = "unknown";
- bool dormant = false, carrier = false;
+ LinkOperationalState operstate = LINK_OPERSTATE_OFF;
+ const char *operstate_str;
int r;
assert(m);
assert(m->state_file);
+ /* We add all NTP and DNS server to a set, to filter out duplicates */
+ dns = set_new(&string_hash_ops);
+ if (!dns)
+ return -ENOMEM;
+
+ ntp = set_new(&string_hash_ops);
+ if (!ntp)
+ return -ENOMEM;
+
+ domains = set_new(&string_hash_ops);
+ if (!domains)
+ return -ENOMEM;
+
HASHMAP_FOREACH(link, m->links, i) {
if (link->flags & IFF_LOOPBACK)
continue;
- if (link_has_carrier(link->flags, link->operstate))
- carrier = true;
- else if (link->operstate == IF_OPER_DORMANT)
- dormant = true;
+ if (link->operstate > operstate)
+ operstate = link->operstate;
+
+ if (!link->network)
+ continue;
+
+ /* First add the static configured entries */
+ r = set_put_strdupv(dns, link->network->dns);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdupv(ntp, link->network->ntp);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdupv(domains, link->network->domains);
+ if (r < 0)
+ return r;
+
+ if (!link->dhcp_lease)
+ continue;
+
+ /* Secondly, add the entries acquired via DHCP */
+ if (link->network->dhcp_dns) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ r = set_put_in_addrv(dns, addresses, r);
+ if (r < 0)
+ return r;
+ } else if (r < 0 && r != -ENOENT)
+ return r;
+ }
+
+ if (link->network->dhcp_ntp) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ r = set_put_in_addrv(ntp, addresses, r);
+ if (r < 0)
+ return r;
+ } else if (r < 0 && r != -ENOENT)
+ return r;
+ }
+
+ if (link->network->dhcp_domains) {
+ const char *domainname;
+
+ r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
+ if (r >= 0) {
+ r = set_put_strdup(domains, domainname);
+ if (r < 0)
+ return r;
+ } else if (r != -ENOENT)
+ return r;
+ }
}
- if (carrier)
- oper_state = "carrier";
- else if (dormant)
- oper_state = "dormant";
+ operstate_str = link_operstate_to_string(operstate);
+ assert(operstate_str);
r = fopen_temporary(m->state_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ return r;
fchmod(fileno(f), 0644);
fprintf(f,
"# This is private data. Do not parse.\n"
- "OPER_STATE=%s\n", oper_state);
+ "OPER_STATE=%s\n", operstate_str);
- fflush(f);
+ print_string_set(f, "DNS=", dns);
+ print_string_set(f, "NTP=", ntp);
+ print_string_set(f, "DOMAINS=", domains);
- if (ferror(f) || rename(temp_path, m->state_file) < 0) {
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
+
+ if (rename(temp_path, m->state_file) < 0) {
r = -errno;
- unlink(m->state_file);
- unlink(temp_path);
+ goto fail;
}
-finish:
- if (r < 0)
- log_error("Failed to save network state to %s: %s", m->state_file, strerror(-r));
+ if (m->operational_state != operstate) {
+ m->operational_state = operstate;
+ r = manager_send_changed(m, "OperationalState", NULL);
+ if (r < 0)
+ log_error_errno(r, "Could not emit changed OperationalState: %m");
+ }
+
+ return 0;
+fail:
+ log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
+ unlink(m->state_file);
+ unlink(temp_path);
return r;
}
+
+int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) {
+ AddressPool *p;
+ int r;
+
+ assert(m);
+ assert(prefixlen > 0);
+ assert(found);
+
+ LIST_FOREACH(address_pools, p, m->address_pools) {
+ if (p->family != family)
+ continue;
+
+ r = address_pool_acquire(p, prefixlen, found);
+ if (r != 0)
+ return r;
+ }
+
+ return 0;
+}
+
+const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
+ if (b == ADDRESS_FAMILY_YES ||
+ b == ADDRESS_FAMILY_NO)
+ return yes_no(b == ADDRESS_FAMILY_YES);
+
+ if (b == ADDRESS_FAMILY_IPV4)
+ return "ipv4";
+ if (b == ADDRESS_FAMILY_IPV6)
+ return "ipv6";
+
+ return NULL;
+}
+
+AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
+ int r;
+
+ /* Make this a true superset of a boolean */
+
+ r = parse_boolean(s);
+ if (r > 0)
+ return ADDRESS_FAMILY_YES;
+ if (r == 0)
+ return ADDRESS_FAMILY_NO;
+
+ if (streq(s, "ipv4"))
+ return ADDRESS_FAMILY_IPV4;
+ if (streq(s, "ipv6"))
+ return ADDRESS_FAMILY_IPV6;
+
+ return _ADDRESS_FAMILY_BOOLEAN_INVALID;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");