Merge pull request #13145 from poettering/nss-gateway-fix

filter _gateway NSS resolving to only use main routing table

meson.build

@@ -1540,6 +1540,7 @@ foreach tuple : [['myhostname', 'ENABLE_NSS_MYHOSTNAME'],
                                      '-shared',
                                      '-Wl,--version-script=' + version_script_arg],
                         link_with : [libsystemd_static,
+                                     libshared_static,
                                      libbasic],
                         dependencies : [threads,
                                         librt],

src/libsystemd/meson.build

@@ -71,8 +71,6 @@ libsystemd_sources = files('''
         sd-hwdb/hwdb-util.h
         sd-hwdb/sd-hwdb.c
         sd-netlink/generic-netlink.c
-        sd-netlink/local-addresses.c
-        sd-netlink/local-addresses.h
         sd-netlink/netlink-internal.h
         sd-netlink/netlink-message.c
         sd-netlink/netlink-slot.c

src/shared/local-addresses.c

@@ -175,7 +175,7 @@ int local_gateways(sd_netlink *context, int ifindex, int af, struct local_addres
         for (m = reply; m; m = sd_netlink_message_next(m)) {
                 struct local_address *a;
                 uint16_t type;
-                unsigned char dst_len, src_len;
+                unsigned char dst_len, src_len, table;
                 uint32_t ifi;
                 int family;
 
@@ -202,6 +202,12 @@ int local_gateways(sd_netlink *context, int ifindex, int af, struct local_addres
                 if (src_len != 0)
                         continue;
 
+                r = sd_rtnl_message_route_get_table(m, &table);
+                if (r < 0)
+                        return r;
+                if (table != RT_TABLE_MAIN)
+                        continue;
+
                 r = sd_netlink_message_read_u32(m, RTA_OIF, &ifi);
                 if (r == -ENODATA) /* Not all routes have an RTA_OIF attribute (for example nexthop ones) */
                         continue;

src/shared/meson.build

@@ -109,6 +109,8 @@ shared_sources = files('''
         linux/bpf_insn.h
         linux/dm-ioctl.h
         linux/ethtool.h
+        local-addresses.c
+        local-addresses.h
         lockfile-util.c
         lockfile-util.h
         log-link.h
@@ -170,8 +172,8 @@ shared_sources = files('''
         udev-util.h
         uid-range.c
         uid-range.h
-        unit-file.h
         unit-file.c
+        unit-file.h
         utmp-wtmp.h
         varlink.c
         varlink.h

src/test/meson.build

@@ -754,6 +754,10 @@ tests += [
         [['src/test/test-sd-hwdb.c'],
          [],
          []],
+
+        [['src/test/test-local-addresses.c'],
+         [],
+         []],
 ]
 
 ############################################################
@@ -964,10 +968,6 @@ tests += [
          [],
          []],
 
-        [['src/libsystemd/sd-netlink/test-local-addresses.c'],
-         [],
-         []],
-
         [['src/libsystemd/sd-resolve/test-resolve.c'],
          [],
          [threads],