unit: don't serialize job state, only unit state across switch-root

6 files changed, 31 insertions, 21 deletions

diff --git a/TODO b/TODO
index d1fbed5c58..86a2463cc3 100644
--- a/TODO
+++ b/TODO
@@ -34,6 +34,8 @@ Bugfixes:
 
 Features:
 
+* syscall filter: add knowledge about compat syscalls
+
 * flush jobs when switching root
 
 * autorestart of journald after switch-root is broken
diff --git a/src/core/main.c b/src/core/main.c
index 022d05a31b..c7a7a87e7a 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1058,7 +1058,7 @@ static int version(void) {
         return 0;
 }
 
-static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
+static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool serialize_jobs) {
         FILE *f = NULL;
         FDSet *fds = NULL;
         int r;
@@ -1070,18 +1070,21 @@ static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
         /* Make sure nothing is really destructed when we shut down */
         m->n_reloading ++;
 
-        if ((r = manager_open_serialization(m, &f)) < 0) {
+        r = manager_open_serialization(m, &f);
+        if (r < 0) {
                 log_error("Failed to create serialization file: %s", strerror(-r));
                 goto fail;
         }
 
-        if (!(fds = fdset_new())) {
+        fds = fdset_new();
+        if (!fds) {
                 r = -ENOMEM;
                 log_error("Failed to allocate fd set: %s", strerror(-r));
                 goto fail;
         }
 
-        if ((r = manager_serialize(m, f, fds)) < 0) {
+        r = manager_serialize(m, f, fds, serialize_jobs);
+        if (r < 0) {
                 log_error("Failed to serialize state: %s", strerror(-r));
                 goto fail;
         }
@@ -1091,12 +1094,14 @@ static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
                 goto fail;
         }
 
-        if ((r = fd_cloexec(fileno(f), false)) < 0) {
+        r = fd_cloexec(fileno(f), false);
+        if (r < 0) {
                 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
                 goto fail;
         }
 
-        if ((r = fdset_cloexec(fds, false)) < 0) {
+        r = fdset_cloexec(fds, false);
+        if (r < 0) {
                 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
                 goto fail;
         }
@@ -1624,7 +1629,7 @@ int main(int argc, char *argv[]) {
 
                 case MANAGER_REEXECUTE:
 
-                        if (prepare_reexecute(m, &serialization, &fds) < 0)
+                        if (prepare_reexecute(m, &serialization, &fds, true) < 0)
                                 goto finish;
 
                         reexecute = true;
@@ -1638,7 +1643,7 @@ int main(int argc, char *argv[]) {
                         m->switch_root = m->switch_root_init = NULL;
 
                         if (!switch_root_init)
-                                if (prepare_reexecute(m, &serialization, &fds) < 0)
+                                if (prepare_reexecute(m, &serialization, &fds, false) < 0)
                                         goto finish;
 
                         reexecute = true;
diff --git a/src/core/manager.c b/src/core/manager.c
index 8f2635051e..27dc9f38e0 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -1722,7 +1722,7 @@ int manager_open_serialization(Manager *m, FILE **_f) {
         return 0;
 }
 
-int manager_serialize(Manager *m, FILE *f, FDSet *fds) {
+int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) {
         Iterator i;
         Unit *u;
         const char *t;
@@ -1759,7 +1759,7 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds) {
                 fputs(u->id, f);
                 fputc('\n', f);
 
-                if ((r = unit_serialize(u, f, fds)) < 0) {
+                if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) {
                         m->n_reloading --;
                         return r;
                 }
@@ -1899,7 +1899,7 @@ int manager_reload(Manager *m) {
                 goto finish;
         }
 
-        r = manager_serialize(m, f, fds);
+        r = manager_serialize(m, f, fds, true);
         if (r < 0) {
                 m->n_reloading --;
                 goto finish;
diff --git a/src/core/manager.h b/src/core/manager.h
index be2780bafe..6c81f92d63 100644
--- a/src/core/manager.h
+++ b/src/core/manager.h
@@ -278,7 +278,7 @@ void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid
 
 int manager_open_serialization(Manager *m, FILE **_f);
 
-int manager_serialize(Manager *m, FILE *f, FDSet *fds);
+int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs);
 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
 
 int manager_reload(Manager *m);
diff --git a/src/core/unit.c b/src/core/unit.c
index 7994f7038e..ae6f69183d 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -2401,7 +2401,7 @@ bool unit_can_serialize(Unit *u) {
         return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
 }
 
-int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
+int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) {
         int r;
 
         assert(u);
@@ -2414,14 +2414,17 @@ int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
         if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
                 return r;
 
-        if (u->job) {
-                fprintf(f, "job\n");
-                job_serialize(u->job, f, fds);
-        }
 
-        if (u->nop_job) {
-                fprintf(f, "job\n");
-                job_serialize(u->nop_job, f, fds);
+        if (serialize_jobs) {
+                if (u->job) {
+                        fprintf(f, "job\n");
+                        job_serialize(u->job, f, fds);
+                }
+
+                if (u->nop_job) {
+                        fprintf(f, "job\n");
+                        job_serialize(u->nop_job, f, fds);
+                }
         }
 
         dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp);
diff --git a/src/core/unit.h b/src/core/unit.h
index 2483e4ea9d..d0a5d641d0 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -499,7 +499,7 @@ char *unit_full_printf(Unit *u, const char *text);
 char **unit_full_printf_strv(Unit *u, char **l);
 
 bool unit_can_serialize(Unit *u);
-int unit_serialize(Unit *u, FILE *f, FDSet *fds);
+int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs);
 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_attr_(4,5);
 void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value);
 int unit_deserialize(Unit *u, FILE *f, FDSet *fds);