src/machine/machined-core.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "machined.h"
   4 #include "nscd-flush.h"
   5 #include "strv.h"
   6
   7 static int on_nscd_cache_flush_event(sd_event_source *s, void *userdata) {
   8         /* Let's ask glibc's nscd daemon to flush its caches. We request this for the three database machines may show
   9          * up in: the hosts database (for resolvable machine names) and the user and group databases (for the user ns
  10          * ranges). */
  11
  12         (void) nscd_flush_cache(STRV_MAKE("passwd", "group", "hosts"));
  13         return 0;
  14 }
  15
  16 int manager_enqueue_nscd_cache_flush(Manager *m) {
  17         int r;
  18
  19         assert(m);
  20
  21         if (!m->nscd_cache_flush_event) {
  22                 r = sd_event_add_defer(m->event, &m->nscd_cache_flush_event, on_nscd_cache_flush_event, m);
  23                 if (r < 0)
  24                         return log_error_errno(r, "Failed to allocate NSCD cache flush event: %m");
  25
  26                 sd_event_source_set_description(m->nscd_cache_flush_event, "nscd-cache-flush");
  27         }
  28
  29         r = sd_event_source_set_enabled(m->nscd_cache_flush_event, SD_EVENT_ONESHOT);
  30         if (r < 0) {
  31                 m->nscd_cache_flush_event = sd_event_source_unref(m->nscd_cache_flush_event);
  32                 return log_error_errno(r, "Failed to enable NSCD cache flush event: %m");
  33         }
  34
  35         return 0;
  36 }