X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd.c;h=430d615f90753066b61a260e25457860abd0903c;hb=b6a3ca6d876ab59b4f29ed67f54ef87005177906;hp=00e9a5f3da6dbc42ed60687eb6206733bc94c61b;hpb=1346b1f0388f4100bb3c2a2bb23bc881769c020c;p=elogind.git

diff --git a/src/network/networkd.c b/src/network/networkd.c
index 00e9a5f3d..430d615f9 100644
--- a/src/network/networkd.c
+++ b/src/network/networkd.c
@@ -19,6 +19,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include "capability.h"
 #include "sd-event.h"
 #include "sd-daemon.h"
 
@@ -26,6 +27,9 @@
 
 int main(int argc, char *argv[]) {
         _cleanup_manager_free_ Manager *m = NULL;
+        const char *user = "systemd-network";
+        uid_t uid;
+        gid_t gid;
         int r;
 
         log_set_target(LOG_TARGET_AUTO);
@@ -40,47 +44,69 @@ int main(int argc, char *argv[]) {
                 goto out;
         }
 
-        r = manager_new(&m);
+        r = get_user_creds(&user, &uid, &gid, NULL, NULL);
         if (r < 0) {
-                log_error("Could not create manager: %s", strerror(-r));
+                log_error_errno(r, "Cannot resolve user name %s: %m", user);
                 goto out;
         }
 
-        r = manager_load_config(m);
+        /* Always create the directories people can create inotify
+         * watches in. */
+        r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid);
+        if (r < 0)
+                log_error_errno(r, "Could not create runtime directory: %m");
+
+        r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid);
+        if (r < 0)
+                log_error_errno(r, "Could not create runtime directory 'links': %m");
+
+        r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid);
+        if (r < 0)
+                log_error_errno(r, "Could not create runtime directory 'leases': %m");
+
+        r = drop_privileges(uid, gid,
+                            (1ULL << CAP_NET_ADMIN) |
+                            (1ULL << CAP_NET_BIND_SERVICE) |
+                            (1ULL << CAP_NET_BROADCAST) |
+                            (1ULL << CAP_NET_RAW));
+        if (r < 0)
+                goto out;
+
+        assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+
+        r = manager_new(&m);
         if (r < 0) {
-                log_error("Could not load configuration files: %s", strerror(-r));
+                log_error_errno(r, "Could not create manager: %m");
                 goto out;
         }
 
         r = manager_udev_listen(m);
         if (r < 0) {
-                log_error("Could not connect to udev: %s", strerror(-r));
+                log_error_errno(r, "Could not connect to udev: %m");
                 goto out;
         }
 
-        r = manager_udev_enumerate_links(m);
+        r = manager_rtnl_listen(m);
         if (r < 0) {
-                log_error("Could not enumerate links: %s", strerror(-r));
+                log_error_errno(r, "Could not connect to rtnl: %m");
                 goto out;
         }
 
-        r = manager_rtnl_listen(m);
+        r = manager_bus_listen(m);
         if (r < 0) {
-                log_error("Could not connect to rtnl: %s", strerror(-r));
+                log_error_errno(r, "Could not connect to system bus: %m");
                 goto out;
         }
 
-        r = manager_bus_listen(m);
+        r = manager_load_config(m);
         if (r < 0) {
-                log_error("Could not connect to system bus: %s", strerror(-r));
+                log_error_errno(r, "Could not load configuration files: %m");
                 goto out;
         }
 
-        /* write out empty resolv.conf to avoid a
-         * dangling symlink */
-        r = manager_update_resolv_conf(m);
+        r = manager_rtnl_enumerate_links(m);
         if (r < 0) {
-                log_error("Could not create resolv.conf: %s", strerror(-r));
+                log_error_errno(r, "Could not enumerate links: %m");
                 goto out;
         }
 
@@ -90,12 +116,13 @@ int main(int argc, char *argv[]) {
 
         r = sd_event_loop(m->event);
         if (r < 0) {
-                log_error("Event loop failed: %s", strerror(-r));
+                log_error_errno(r, "Event loop failed: %m");
                 goto out;
         }
 
 out:
         sd_notify(false,
+                  "STOPPING=1\n"
                   "STATUS=Shutting down...");
 
         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;