src/core/bpf-lsm.c

@@ -176,7 +176,7 @@ int lsm_bpf_supported(void) {
 }
 
 int lsm_bpf_setup(Manager *m) {
-        _cleanup_(restrict_fs_bpf_freep) struct restrict_fs_bpf *obj = NULL;
+        struct restrict_fs_bpf *obj;
         _cleanup_(bpf_link_freep) struct bpf_link *link = NULL;
         int r;
 
@@ -186,16 +186,17 @@ int lsm_bpf_setup(Manager *m) {
         if (r < 0)
                 return r;
 
-        link = sym_bpf_program__attach_lsm(obj->progs.restrict_filesystems);
+        m->restrict_fs = obj;
+
+        link = sym_bpf_program__attach_lsm(m->restrict_fs->progs.restrict_filesystems);
         r = sym_libbpf_get_error(link);
         if (r != 0)
                 return log_error_errno(r, "Failed to link '%s' LSM BPF program: %m",
-                                       sym_bpf_program__name(obj->progs.restrict_filesystems));
+                                       sym_bpf_program__name(m->restrict_fs->progs.restrict_filesystems));
 
         log_info("LSM BPF program attached");
 
-        obj->links.restrict_filesystems = TAKE_PTR(link);
+        m->restrict_fs->links.restrict_filesystems = TAKE_PTR(link);
-        m->restrict_fs = TAKE_PTR(obj);
 
         return 0;
 }
@@ -209,10 +210,6 @@ int lsm_bpf_unit_restrict_filesystems(Unit *u, const Set *filesystems, bool allo
         assert(filesystems);
         assert(u);
 
-        if (!u->manager->restrict_fs)
-                return log_unit_error_errno(u, SYNTHETIC_ERRNO(EINVAL),
-                                            "Restrict filesystems BPF object is not set, BPF LSM setup has failed?");
-
         int inner_map_fd = sym_bpf_create_map(
                         BPF_MAP_TYPE_HASH,
                         sizeof(uint32_t),

src/core/execute.c

@@ -1732,16 +1732,9 @@ static int apply_lock_personality(const Unit* u, const ExecContext *c) {
 
 #if HAVE_LIBBPF
 static bool skip_lsm_bpf_unsupported(const Unit* u, const char* msg) {
-        assert(u);
-        assert(u->manager);
-
         if (lsm_bpf_supported())
                 return false;
 
-        /* lsm_bpf_setup succeeded */
-        if (u->manager->restrict_fs)
-                return false;
-
         log_unit_debug(u, "LSM BPF not supported, skipping %s", msg);
         return true;
 }

src/core/manager.c

@@ -933,7 +933,7 @@ int manager_new(UnitFileScope scope, ManagerTestRunFlags test_run_flags, Manager
                 if (MANAGER_IS_SYSTEM(m) && lsm_bpf_supported()) {
                         r = lsm_bpf_setup(m);
                         if (r < 0)
-                                log_warning_errno(r, "Failed to setup LSM BPF, ignoring: %m");
+                                return r;
                 }
 #endif
         }

src/test/test-watchdog.c

@@ -17,7 +17,7 @@ int main(int argc, char *argv[]) {
 
         slow = slow_tests_enabled();
 
-        t = slow ? 10 * USEC_PER_SEC : 2 * USEC_PER_SEC;
+        t = slow ? 10 * USEC_PER_SEC : 1 * USEC_PER_SEC;
         count = slow ? 5 : 3;
 
         r = watchdog_setup(t);
@@ -27,13 +27,12 @@ int main(int argc, char *argv[]) {
                 t = 0;
 
         for (i = 0; i < count; i++) {
-                t = watchdog_runtime_wait();
-                log_info("Sleeping " USEC_FMT " microseconds...", t);
-                usleep(t);
                 log_info("Pinging...");
                 r = watchdog_ping();
                 if (r < 0)
                         log_warning_errno(r, "Failed to ping watchdog: %m");
+
+                usleep(t/2);
         }
 
         watchdog_close(true);