manager: refuse reloading/reexecing when /run is overly full

Let's add an extra safety check: before entering a reload/reexec, let's
verify that there's enough room in /run for it.

Fixes: #5016

diff --git a/src/libelogind/sd-bus/bus-common-errors.c b/src/libelogind/sd-bus/bus-common-errors.c
index ea0531e216269802ee2174e44c47818d3adff294..a6d38b98256d58eccb0b43424a1035ba10cd7cbe 100644 (file)
--- a/src/libelogind/sd-bus/bus-common-errors.c
+++ b/src/libelogind/sd-bus/bus-common-errors.c
@@ -48,6 +48,7 @@ BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = {
         SD_BUS_ERROR_MAP(BUS_ERROR_SCOPE_NOT_RUNNING,            EHOSTDOWN),
         SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_DYNAMIC_USER,         ESRCH),
         SD_BUS_ERROR_MAP(BUS_ERROR_NOT_REFERENCED,               EUNATCH),
+        SD_BUS_ERROR_MAP(BUS_ERROR_DISK_FULL,                    ENOSPC),
 
         SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_MACHINE,              ENXIO),
         SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_IMAGE,                ENOENT),