X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-manager.c;h=46b803fee5d82a907e8bf2c9c85e9cfde44ee694;hp=ad36553f2b48e8979cce2d5c67cd46950a1281d2;hb=5d8e593dce074bff966fc0a46579c61b4f3bc33a;hpb=2dcf7ec6ec0c28297311108acba119cd6e055e64

diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index ad36553f2..46b803fee 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -19,9 +19,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  ***/
 
-#include <resolv.h>
+#include <sys/socket.h>
 #include <linux/if.h>
-#include <libkmod.h>
 
 #include "conf-parser.h"
 #include "path-util.h"
@@ -44,125 +43,31 @@ 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;
-
-        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;
+static int setup_default_address_pool(Manager *m) {
+        AddressPool *p;
         int r;
 
         assert(m);
 
-        assert_se(sigemptyset(&mask) == 0);
-        sigset_add_many(&mask, SIGINT, SIGTERM, -1);
-        assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+        /* Add in the well-known private address ranges. */
 
-        r = sd_event_add_signal(m->event, &m->sigterm_event_source, SIGTERM, dispatch_sigterm, m);
+        r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7);
         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, "192.168.0.0", 16);
         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;
-
-        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 = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12);
+        if (r < 0)
+                return r;
 
-        r = config_parse(NULL, fn, f, "Network\0", config_item_perf_lookup,
-                         (void*) networkd_gperf_lookup, false, false, m);
+        r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8);
         if (r < 0)
-                log_warning("Failed to parse configuration file: %s", strerror(-r));
+                return r;
 
-        return r;
+        return 0;
 }
 
 int manager_new(Manager **ret) {
@@ -173,24 +78,19 @@ int manager_new(Manager **ret) {
         if (!m)
                 return -ENOMEM;
 
-        m->state_file = strdup("/run/systemd/network/state");
+        m->state_file = strdup("/run/systemd/netif/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);
 
+        sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+        sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+
         r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
                          RTNLGRP_IPV6_IFADDR);
         if (r < 0)
@@ -200,10 +100,6 @@ int manager_new(Manager **ret) {
         if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */
                 return r;
 
-        r = setup_signals(m);
-        if (r < 0)
-                return r;
-
         /* udev does not initialize devices inside containers,
          * so we rely on them being already initialized before
          * entering the container */
@@ -217,10 +113,6 @@ int manager_new(Manager **ret) {
                         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;
@@ -231,6 +123,10 @@ int manager_new(Manager **ret) {
 
         LIST_HEAD_INIT(m->networks);
 
+        r = setup_default_address_pool(m);
+        if (r < 0)
+                return r;
+
         *ret = m;
         m = NULL;
 
@@ -241,14 +137,13 @@ void manager_free(Manager *m) {
         Network *network;
         NetDev *netdev;
         Link *link;
-        Address *address;
+        AddressPool *pool;
 
         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);
@@ -257,11 +152,6 @@ void manager_free(Manager *m) {
         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_unref(link);
         hashmap_free(m->links);
@@ -273,6 +163,9 @@ void manager_free(Manager *m) {
                 netdev_unref(netdev);
         hashmap_free(m->netdevs);
 
+        while ((pool = m->address_pools))
+                address_pool_free(pool);
+
         sd_rtnl_unref(m->rtnl);
 
         free(m);
@@ -366,7 +259,8 @@ 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_debug("could not add new link: %s",
+                                           strerror(-r));
                                 return 0;
                         }
                 }
@@ -484,6 +378,8 @@ int manager_udev_listen(Manager *m) {
 int manager_rtnl_listen(Manager *m) {
         int r;
 
+        assert(m);
+
         r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
         if (r < 0)
                 return r;
@@ -522,109 +418,13 @@ int manager_bus_listen(Manager *m) {
         return 0;
 }
 
-static void append_dns(FILE *f, struct in_addr *dns, unsigned char family, unsigned *count) {
-        char buf[INET6_ADDRSTRLEN];
-        const char *address;
-
-        address = inet_ntop(family, dns, buf, INET6_ADDRSTRLEN);
-        if (!address) {
-                log_warning("Invalid DNS address. Ignoring.");
-                return;
-        }
-
-        if (*count == MAXNS)
-                fputs("# Too many DNS servers configured, the following entries "
-                      "will be ignored\n", f);
-
-        fprintf(f, "nameserver %s\n", address);
-
-        (*count) ++;
-}
-
-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;
-        int r;
-
-        assert(m);
-
-        r = fopen_temporary("/run/systemd/network/resolv.conf", &f, &temp_path);
-        if (r < 0)
-                return r;
-
-        fchmod(fileno(f), 0644);
-
-        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);
-
-        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);
-                                }
-                        }
-
-                        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);
-                        }
-                }
-        }
-
-        HASHMAP_FOREACH(link, m->links, i) {
-                if (link->network && link->network->dns) {
-                        Address *address;
-
-                        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) {
-                r = -errno;
-                unlink("/run/systemd/network/resolv.conf");
-                unlink(temp_path);
-                return r;
-        }
-
-        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;
+        LinkOperationalState operstate = LINK_OPERSTATE_UNKNOWN;
+        const char *operstate_str;
         int r;
 
         assert(m);
@@ -634,16 +434,12 @@ int manager_save(Manager *m) {
                 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 (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)
@@ -653,7 +449,7 @@ int manager_save(Manager *m) {
 
         fprintf(f,
                 "# This is private data. Do not parse.\n"
-                "OPER_STATE=%s\n", oper_state);
+                "OPER_STATE=%s\n", operstate_str);
 
         fflush(f);
 
@@ -669,3 +465,23 @@ finish:
 
         return r;
 }
+
+int manager_address_pool_acquire(Manager *m, unsigned 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;
+}