meson: link NSS modules with -z nodelete (#7607)

We might end up allocating mempools, and when we are unloaded we might
orphan them, thus leaking them. Hence, let's just stick around for good,
so the mempools remain referenced continously and for good, and thus no
memory is leaked (though the memory isn't cleaned up either).

Fixes: #7596

diff --git a/meson.build b/meson.build
index 7fbe735..3c57bde 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -1333,7 +1333,9 @@ foreach tuple : [['myhostname', 'ENABLE_MYHOSTNAME'],
                         'src/nss-@0@/nss-@0@.c'.format(module),
                         version : '2',
                         include_directories : includes,
-                        link_args : ['-shared',
+                        # Note that we link NSS modules with '-z nodelete' so that mempools never get orphaned
+                        link_args : ['-Wl,-z,nodelete',
+                                     '-shared',
                                      '-Wl,--version-script=' + version_script_arg,
                                      '-Wl,--undefined'],
                         link_with : [libsystemd_internal,