#include <sys/socket.h>
#include <linux/if.h>
+#include "sd-daemon.h"
+#include "sd-netlink.h"
+
+#include "bus-util.h"
#include "conf-parser.h"
-#include "path-util.h"
-#include "networkd.h"
-#include "networkd-netdev.h"
-#include "networkd-link.h"
-#include "network-internal.h"
+#include "def.h"
#include "libudev-private.h"
+#include "local-addresses.h"
+#include "netlink-util.h"
+#include "networkd.h"
+#include "path-util.h"
+#include "set.h"
#include "udev-util.h"
-#include "rtnl-util.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)
return 0;
}
-static int systemd_netlink_fd(int *ret) {
- int n, fd, rtnl_fd = -1;
-
- 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;
+static int on_bus_retry(sd_event_source *s, usec_t usec, void *userdata) {
+ Manager *m = userdata;
- rtnl_fd = fd;
- }
- }
+ assert(s);
+ assert(m);
- if (rtnl_fd < 0)
- return -EINVAL;
+ m->bus_retry_event_source = sd_event_source_unref(m->bus_retry_event_source);
- *ret = rtnl_fd;
+ manager_connect_bus(m);
return 0;
}
-int manager_new(Manager **ret) {
- _cleanup_manager_free_ Manager *m = NULL;
- int r, fd;
-
- m = new0(Manager, 1);
- if (!m)
- return -ENOMEM;
-
- m->state_file = strdup("/run/systemd/netif/state");
- if (!m->state_file)
- return -ENOMEM;
-
- r = sd_event_default(&m->event);
- if (r < 0)
- return r;
-
- sd_event_set_watchdog(m->event, true);
-
- sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
- sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+static int manager_reset_all(Manager *m) {
+ Link *link;
+ Iterator i;
+ int r;
- if (systemd_netlink_fd(&fd) < 0) {
- r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
- RTNLGRP_IPV6_IFADDR);
- if (r < 0)
- return r;
+ assert(m);
- r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
- if (r < 0)
- return r;
- } else {
- r = sd_rtnl_new_from_netlink(&m->rtnl, fd);
+ HASHMAP_FOREACH(link, m->links, i) {
+ r = link_carrier_reset(link);
if (r < 0)
- return r;
+ log_link_warning_errno(link, r, "Could not reset carrier: %m");
}
- r = sd_bus_default_system(&m->bus);
- if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */
- return r;
+ return 0;
+}
- /* 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;
+static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
+ Manager *m = userdata;
+ int b, r;
- m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
- if (!m->udev_monitor)
- return -ENOMEM;
- }
+ assert(message);
- m->netdevs = hashmap_new(&string_hash_ops);
- if (!m->netdevs)
- 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;
+ }
- LIST_HEAD_INIT(m->networks);
+ if (b)
+ return 0;
- r = setup_default_address_pool(m);
- if (r < 0)
- return r;
+ 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;
- AddressPool *pool;
+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... */
- 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_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;
+ }
- while ((netdev = hashmap_first(m->netdevs)))
- netdev_unref(netdev);
- hashmap_free(m->netdevs);
+ if (r < 0)
+ return r;
- while ((pool = m->address_pools))
- address_pool_free(pool);
+ 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) {
ifindex = udev_device_get_ifindex(device);
if (ifindex <= 0) {
- log_debug("ignoring udev ADD event for device with invalid ifindex");
+ log_debug("Ignoring udev ADD event for device with invalid ifindex");
return 0;
}
return 0;
}
-static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
+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() > 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;
+}
+
+int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
+ Manager *m = userdata;
+ Link *link = NULL;
+ uint16_t type;
+ unsigned char flags;
+ int family;
+ unsigned char prefixlen;
+ unsigned char scope;
+ union in_addr_union in_addr;
+ struct ifa_cacheinfo cinfo;
+ Address *address = NULL;
+ char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
+ const char *valid_str = NULL;
+ int r, ifindex;
+
+ assert(rtnl);
+ assert(message);
+ assert(m);
+
+ if (sd_netlink_message_is_error(message)) {
+ r = sd_netlink_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: failed to receive address: %m");
+
+ return 0;
+ }
+
+ r = sd_netlink_message_get_type(message, &type);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get message type: %m");
+ return 0;
+ } else if (type != RTM_NEWADDR && type != RTM_DELADDR) {
+ log_warning("rtnl: received unexpected message type when processing address");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex from address: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received address message with invalid ifindex: %d", ifindex);
+ return 0;
+ } else {
+ r = link_get(m, ifindex, &link);
+ if (r < 0 || !link) {
+ /* when enumerating we might be out of sync, but we will
+ * get the address again, so just ignore it */
+ if (!m->enumerating)
+ log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex);
+ return 0;
+ }
+ }
+
+ r = sd_rtnl_message_addr_get_family(message, &family);
+ if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
+ log_link_warning(link, "rtnl: received address with invalid family, ignoring.");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_scope(message, &scope);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_flags(message, &flags);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m");
+ return 0;
+ }
+
+ switch (family) {
+ case AF_INET:
+ r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ case AF_INET6:
+ r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("invalid address family");
+ }
+
+ if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) {
+ log_link_warning(link, "Could not print address");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo);
+ if (r >= 0) {
+ if (cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME)
+ valid_str = "ever";
+ else
+ valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX,
+ cinfo.ifa_valid * USEC_PER_SEC,
+ USEC_PER_SEC);
+ }
+
+ address_get(link, family, &in_addr, prefixlen, &address);
+
+ switch (type) {
+ case RTM_NEWADDR:
+ if (address)
+ log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, prefixlen, valid_str);
+ else {
+ /* An address appeared that we did not request */
+ r = address_add_foreign(link, family, &in_addr, prefixlen, &address);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "Failed to add address %s/%u: %m", buf, prefixlen);
+ return 0;
+ } else
+ log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, prefixlen, valid_str);
+ }
+
+ address_update(address, flags, scope, &cinfo);
+
+ break;
+
+ case RTM_DELADDR:
+
+ if (address) {
+ log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, prefixlen, valid_str);
+ address_drop(address);
+ } else
+ log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, prefixlen, valid_str);
+
+ break;
+ default:
+ assert_not_reached("Received invalid RTNL message type");
+ }
+
+ return 1;
+}
+
+static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
NetDev *netdev = NULL;
assert(message);
assert(m);
- if (sd_rtnl_message_is_error(message)) {
- r = sd_rtnl_message_get_errno(message);
+ if (sd_netlink_message_is_error(message)) {
+ r = sd_netlink_message_get_errno(message);
if (r < 0)
- log_warning_errno(r, "rtnl: could not receive link: %m");
+ log_warning_errno(r, "rtnl: Could not receive link: %m");
return 0;
}
- r = sd_rtnl_message_get_type(message, &type);
+ r = sd_netlink_message_get_type(message, &type);
if (r < 0) {
- log_warning_errno(r, "rtnl: could not get message type: %m");
+ log_warning_errno(r, "rtnl: Could not get message type: %m");
+ return 0;
+ } else if (type != RTM_NEWLINK && type != RTM_DELLINK) {
+ log_warning("rtnl: Received unexpected message type when processing link");
return 0;
}
r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
if (r < 0) {
- log_warning_errno(r, "rtnl: could not get ifindex: %m");
+ log_warning_errno(r, "rtnl: Could not get ifindex from link: %m");
return 0;
} else if (ifindex <= 0) {
log_warning("rtnl: received link message with invalid ifindex: %d", ifindex);
} else
link_get(m, ifindex, &link);
- r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name);
+ r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name);
if (r < 0) {
- log_warning_errno(r, "rtnl: received link message without ifname: %m");
+ log_warning_errno(r, "rtnl: Received link message without ifname: %m");
return 0;
} else
netdev_get(m, name, &netdev);
/* link is new, so add it */
r = link_add(m, message, &link);
if (r < 0) {
- log_warning_errno(r, "could not add new link: %m");
+ log_warning_errno(r, "Could not add new link: %m");
return 0;
}
}
/* netdev exists, so make sure the ifindex matches */
r = netdev_set_ifindex(netdev, message);
if (r < 0) {
- log_warning_errno(r, "could not set ifindex on netdev: %m");
+ log_warning_errno(r, "Could not set ifindex on netdev: %m");
return 0;
}
}
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;
-
- 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_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 (link = reply; link; link = sd_rtnl_message_next(link)) {
- int k;
-
- k = manager_rtnl_process_link(m->rtnl, link, m);
- if (k < 0)
- r = k;
- }
-
- return r;
-}
-
-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);
- assert(m->rtnl);
-
- r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 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 (addr = reply; addr; addr = sd_rtnl_message_next(addr)) {
- int k;
-
- k = link_rtnl_process_address(m->rtnl, addr, m);
- if (k < 0)
- r = k;
- }
-
- return r;
-}
-
-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;
-}
-
-int manager_udev_listen(Manager *m) {
- int r;
-
- if (detect_container(NULL) > 0)
- return 0;
+static int systemd_netlink_fd(void) {
+ int n, fd, rtnl_fd = -EINVAL;
- assert(m->udev_monitor);
+ n = sd_listen_fds(true);
+ if (n <= 0)
+ return -EINVAL;
- 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");
+ 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;
- r = udev_monitor_enable_receiving(m->udev_monitor);
- if (r < 0) {
- log_error("Could not enable udev monitor");
- return r;
+ rtnl_fd = fd;
+ }
}
- 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;
+ return rtnl_fd;
}
-int manager_rtnl_listen(Manager *m) {
- int r;
+static int manager_connect_rtnl(Manager *m) {
+ int fd, r;
assert(m);
- r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
+ fd = systemd_netlink_fd();
+ if (fd < 0)
+ r = sd_netlink_open(&m->rtnl);
+ else
+ r = sd_netlink_open_fd(&m->rtnl, fd);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m);
+ r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
+ r = sd_netlink_attach_event(m->rtnl, m->event, 0);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m);
+ r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m);
if (r < 0)
return r;
- r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m);
+ r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
if (r < 0)
return r;
- return 0;
-}
-
-int manager_bus_listen(Manager *m) {
- int r;
-
- assert(m->event);
-
- if (!m->bus) /* TODO: drop when we can rely on kdbus */
- return 0;
+ r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &manager_rtnl_process_address, m);
+ if (r < 0)
+ return r;
- r = sd_bus_attach_event(m->bus, m->event, 0);
+ r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &manager_rtnl_process_address, m);
if (r < 0)
return r;
fputc('\n', f);
}
-int manager_save(Manager *m) {
+static int manager_save(Manager *m) {
_cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL;
Link *link;
Iterator i;
r = set_put_in_addrv(dns, addresses, r);
if (r < 0)
return r;
- } else if (r < 0 && r != -ENOENT)
+ } else if (r < 0 && r != -ENODATA)
return r;
}
r = set_put_in_addrv(ntp, addresses, r);
if (r < 0)
return r;
- } else if (r < 0 && r != -ENOENT)
+ } else if (r < 0 && r != -ENODATA)
return r;
}
r = set_put_strdup(domains, domainname);
if (r < 0)
return r;
- } else if (r != -ENOENT)
+ } else if (r != -ENODATA)
return r;
}
}
goto fail;
}
+ 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");
+ }
+
+ m->dirty = false;
+
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);
+ (void) unlink(m->state_file);
+ (void) unlink(temp_path);
+
+ return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
+}
+
+static int manager_dirty_handler(sd_event_source *s, void *userdata) {
+ Manager *m = userdata;
+ Link *link;
+ Iterator i;
+ int r;
+
+ assert(m);
+
+ if (m->dirty)
+ manager_save(m);
+
+ SET_FOREACH(link, m->dirty_links, i) {
+ r = link_save(link);
+ if (r >= 0)
+ link_clean(link);
+ }
+
+ return 1;
+}
+
+int manager_new(Manager **ret) {
+ _cleanup_manager_free_ Manager *m = NULL;
+ int r;
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ m->state_file = strdup("/run/systemd/netif/state");
+ if (!m->state_file)
+ return -ENOMEM;
+
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ return r;
+
+ sd_event_set_watchdog(m->event, true);
+
+ sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+ sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+
+ r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
+ if (r < 0)
+ return r;
+
+ r = manager_connect_rtnl(m);
+ if (r < 0)
+ return r;
+
+ r = manager_connect_udev(m);
+ if (r < 0)
+ return r;
+
+ 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;
+}
+
+void manager_free(Manager *m) {
+ Network *network;
+ NetDev *netdev;
+ Link *link;
+ AddressPool *pool;
+
+ if (!m)
+ return;
+
+ free(m->state_file);
+
+ 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_netlink_unref(m->rtnl);
+ sd_event_unref(m->event);
+
+ sd_event_source_unref(m->udev_event_source);
+ 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->bus_retry_event_source);
+
+ 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) {
+ Link *link;
+ Iterator i;
+
+ assert(m);
+
+ /* The dirty handler will deal with future serialization, but the first one
+ must be done explicitly. */
+
+ manager_save(m);
+
+ HASHMAP_FOREACH(link, m->links, i)
+ link_save(link);
+
+ 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;
+
+ /* update timestamp */
+ paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true);
+
+ r = netdev_load(m);
+ if (r < 0)
+ return r;
+
+ r = network_load(m);
+ if (r < 0)
+ return r;
+
+ 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_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
+ sd_netlink_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_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 (link = reply; link; link = sd_netlink_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_rtnl_enumerate_addresses(Manager *m) {
+ _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
+ sd_netlink_message *addr;
+ int r;
+
+ assert(m);
+ assert(m->rtnl);
+
+ r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 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 (addr = reply; addr; addr = sd_netlink_message_next(addr)) {
+ int k;
+
+ m->enumerating = true;
+
+ k = manager_rtnl_process_address(m->rtnl, addr, m);
+ if (k < 0)
+ r = k;
+
+ m->enumerating = false;
+ }
+
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);
+Link* manager_find_uplink(Manager *m, Link *exclude) {
+ _cleanup_free_ struct local_address *gateways = NULL;
+ int n, i;
+
+ assert(m);
- if (b == ADDRESS_FAMILY_IPV4)
- return "ipv4";
- if (b == ADDRESS_FAMILY_IPV6)
- return "ipv6";
+ /* Looks for a suitable "uplink", via black magic: an
+ * interface that is up and where the default route with the
+ * highest priority points to. */
- return NULL;
-}
+ n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways);
+ if (n < 0) {
+ log_warning_errno(n, "Failed to determine list of default gateways: %m");
+ return NULL;
+ }
-AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
- int r;
+ for (i = 0; i < n; i++) {
+ Link *link;
+
+ link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex));
+ if (!link) {
+ log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
+ continue;
+ }
- /* Make this a true superset of a boolean */
+ if (link == exclude)
+ continue;
- r = parse_boolean(s);
- if (r > 0)
- return ADDRESS_FAMILY_YES;
- if (r == 0)
- return ADDRESS_FAMILY_NO;
+ if (link->operstate < LINK_OPERSTATE_ROUTABLE)
+ continue;
- if (streq(s, "ipv4"))
- return ADDRESS_FAMILY_IPV4;
- if (streq(s, "ipv6"))
- return ADDRESS_FAMILY_IPV6;
+ return link;
+ }
- return _ADDRESS_FAMILY_BOOLEAN_INVALID;
+ return NULL;
}
-DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");
+void manager_dirty(Manager *manager) {
+ assert(manager);
+
+ /* the serialized state in /run is no longer up-to-date */
+ manager->dirty = true;
+}
projects / thirdparty / systemd.git / blobdiff