***/
#include <resolv.h>
+#include <linux/if.h>
+#include <libkmod.h>
+#include "conf-parser.h"
#include "path-util.h"
#include "networkd.h"
+#include "network-internal.h"
#include "libudev-private.h"
#include "udev-util.h"
#include "rtnl-util.h"
return 0;
}
+static int set_fallback_dns(Manager *m, const char *string) {
+ char *word, *state;
+ size_t length;
+ int r;
+
+ assert(m);
+ assert(string);
+
+ FOREACH_WORD_QUOTED(word, length, string, state) {
+ _cleanup_address_free_ Address *address = NULL;
+ Address *tail;
+ _cleanup_free_ char *addrstr = NULL;
+
+ 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;
+ }
+
+ return 0;
+}
+
+int config_parse_dnsv(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Manager *m = userdata;
+ Address *address;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(m);
+
+ while ((address = m->fallback_dns)) {
+ LIST_REMOVE(addresses, m->fallback_dns, address);
+ address_free(address);
+ }
+
+ set_fallback_dns(m, rvalue);
+
+ return 0;
+}
+
+static int manager_parse_config_file(Manager *m) {
+ static const char fn[] = "/etc/systemd/networkd.conf";
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(m);
+
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file %s: %m", fn);
+ return -errno;
+ }
+
+ r = config_parse(NULL, fn, f, "Network\0", config_item_perf_lookup,
+ (void*) networkd_gperf_lookup, false, false, m);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ return r;
+}
+
int manager_new(Manager **ret) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
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 = manager_parse_config_file(m);
+ if (r < 0)
+ return r;
+
r = sd_event_default(&m->event);
if (r < 0)
return r;
sd_event_set_watchdog(m->event, true);
- r = sd_rtnl_open(&m->rtnl, RTMGRP_LINK | RTMGRP_IPV4_IFADDR);
+ r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
+ RTNLGRP_IPV6_IFADDR);
if (r < 0)
return r;
return -ENOMEM;
}
+ 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;
Network *network;
NetDev *netdev;
Link *link;
+ Address *address;
if (!m)
return;
+ free(m->state_file);
+
+ 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->sigint_event_source);
sd_event_unref(m->event);
+ while ((address = m->fallback_dns)) {
+ LIST_REMOVE(addresses, m->fallback_dns, address);
+ address_free(address);
+ }
+
while ((link = hashmap_first(m->links)))
- link_free(link);
+ link_unref(link);
hashmap_free(m->links);
while ((network = m->networks))
network_free(network);
while ((netdev = hashmap_first(m->netdevs)))
- netdev_free(netdev);
+ netdev_unref(netdev);
hashmap_free(m->netdevs);
sd_rtnl_unref(m->rtnl);
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;
int r, ifindex;
assert(message);
assert(m);
+ r = sd_rtnl_message_get_type(message, &type);
+ if (r < 0) {
+ log_warning("rtnl: could not get message type");
+ 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");
return 0;
- }
-
- link_get(m, ifindex, &link);
- if (!link) {
- /* link is new, so add it */
- r = link_add(m, message, &link);
- if (r < 0) {
- log_debug("could not add new link");
- return 0;
- }
- }
+ } else
+ link_get(m, ifindex, &link);
r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name);
- if (r < 0)
+ if (r < 0 || !name) {
log_warning("rtnl: received link message without valid ifname");
- else {
- NetDev *netdev;
+ return 0;
+ } else
+ netdev_get(m, name, &netdev);
+
+ switch (type) {
+ case RTM_NEWLINK:
+ if (!link) {
+ /* link is new, so add it */
+ r = link_add(m, message, &link);
+ if (r < 0) {
+ log_debug("could not add new link");
+ return 0;
+ }
+ }
- r = netdev_get(m, name, &netdev);
- if (r >= 0) {
+ if (netdev) {
+ /* 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");
return 0;
}
}
- }
- r = link_update(link, message);
- if (r < 0)
- return 0;
+ r = link_update(link, message);
+ if (r < 0)
+ return 0;
+
+ break;
+
+ case RTM_DELLINK:
+ link_drop(link);
+ netdev_drop(netdev);
+
+ break;
+
+ default:
+ assert_not_reached("Received invalid RTNL message type.");
+ }
return 1;
}
if (r < 0)
return r;
+ r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m);
+ if (r < 0)
+ return r;
+
return 0;
}
HASHMAP_FOREACH(link, m->links, i) {
if (link->network && link->network->dns) {
Address *address;
- Iterator j;
- SET_FOREACH(address, link->network->dns, j) {
+ LIST_FOREACH(addresses, address, link->network->dns) {
append_dns(f, &address->in_addr.in,
address->family, &count);
}
}
}
+ if (!count) {
+ Address *address;
+
+ LIST_FOREACH(addresses, address, m->fallback_dns)
+ append_dns(f, &address->in_addr.in,
+ address->family, &count);
+ }
+
fflush(f);
if (ferror(f) || rename(temp_path, "/run/systemd/network/resolv.conf") < 0) {
return 0;
}
+
+int manager_save(Manager *m) {
+ 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;
+ int r;
+
+ assert(m);
+ assert(m->state_file);
+
+ 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 (carrier)
+ oper_state = "carrier";
+ else if (dormant)
+ oper_state = "dormant";
+
+ r = fopen_temporary(m->state_file, &f, &temp_path);
+ if (r < 0)
+ goto finish;
+
+ fchmod(fileno(f), 0644);
+
+ fprintf(f,
+ "# This is private data. Do not parse.\n"
+ "OPER_STATE=%s\n", oper_state);
+
+ fflush(f);
+
+ if (ferror(f) || rename(temp_path, m->state_file) < 0) {
+ r = -errno;
+ unlink(m->state_file);
+ unlink(temp_path);
+ }
+
+finish:
+ if (r < 0)
+ log_error("Failed to save network state to %s: %s", m->state_file, strerror(-r));
+
+ return r;
+}
~ianmdlvl / elogind.git / blobdiff