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-rw-r--r--src/nspawn/nspawn.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 0a8dc0cf30..be0e6b5386 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -2645,12 +2645,21 @@ static int change_uid_gid(char **_home) {
}
/*
- * Return 0 in case the container is being rebooted, has been shut
- * down or exited successfully. On failures a negative value is
- * returned.
+ * Return values:
+ * < 0 : wait_for_terminate() failed to get the state of the
+ * container, the container was terminated by a signal, or
+ * failed for an unknown reason. No change is made to the
+ * container argument.
+ * > 0 : The program executed in the container terminated with an
+ * error. The exit code of the program executed in the
+ * container is returned. No change is made to the container
+ * argument.
+ * 0 : The container is being rebooted, has been shut down or exited
+ * successfully. The container argument has been set to either
+ * CONTAINER_TERMINATED or CONTAINER_REBOOTED.
*
- * The status of the container "CONTAINER_TERMINATED" or
- * "CONTAINER_REBOOTED" will be saved in the container argument
+ * That is, success is indicated by a return value of zero, and an
+ * error is indicated by a non-zero value.
*/
static int wait_for_container(pid_t pid, ContainerStatus *container) {
int r;
@@ -2672,7 +2681,6 @@ static int wait_for_container(pid_t pid, ContainerStatus *container) {
} else {
log_error("Container %s failed with error code %i.",
arg_machine, status.si_status);
- r = -1;
}
break;
@@ -3299,8 +3307,12 @@ check_container_status:
r = wait_for_container(pid, &container_status);
pid = 0;
- if (r < 0) {
- r = EXIT_FAILURE;
+ if (r != 0) {
+ /* If r < 0, explicitly set to EXIT_FAILURE,
+ * otherwise return the exit code of the
+ * containered process. */
+ if (r < 0)
+ r = EXIT_FAILURE;
break;
} else if (container_status == CONTAINER_TERMINATED)
break;