- int action;
- register struct node *np;
- FILE *out;
- sigset_t set, oset;
-
- if (!(ctxflags & CTXMOD))
- return;
- ctxflags &= ~CTXMOD;
-
- if ((action = m_chkids ()) > 0)
- return; /* child did it for us */
-
- /* block a few signals */
- sigemptyset (&set);
- sigaddset (&set, SIGHUP);
- sigaddset (&set, SIGINT);
- sigaddset (&set, SIGQUIT);
- sigaddset (&set, SIGTERM);
- SIGPROCMASK (SIG_BLOCK, &set, &oset);
-
- if (!(out = lkfopen (ctxpath, "w")))
- adios (ctxpath, "unable to write");
- for (np = m_defs; np; np = np->n_next)
- if (np->n_context)
- fprintf (out, "%s: %s\n", np->n_name, np->n_field);
- lkfclose (out, ctxpath);
-
- SIGPROCMASK (SIG_SETMASK, &oset, &set); /* reset the signal mask */
-
- if (action == 0)
- _exit (0); /* we are child, time to die */
+ int action;
+ register struct node *np;
+ FILE *out;
+ sigset_t set, oset;
+
+ /* No context in use -- silently ignore any changes! */
+ if (!ctxpath)
+ return;
+
+ if (!(ctxflags & CTXMOD))
+ return;
+ ctxflags &= ~CTXMOD;
+
+ if ((action = m_chkids()) > 0)
+ return; /* child did it for us */
+
+ /* block a few signals */
+ sigemptyset(&set);
+ sigaddset(&set, SIGHUP);
+ sigaddset(&set, SIGINT);
+ sigaddset(&set, SIGQUIT);
+ sigaddset(&set, SIGTERM);
+ SIGPROCMASK(SIG_BLOCK, &set, &oset);
+
+ if (!(out = lkfopen(ctxpath, "w")))
+ adios(ctxpath, "unable to write");
+ for (np = m_defs; np; np = np->n_next)
+ if (np->n_context)
+ fprintf(out, "%s: %s\n", np->n_name, np->n_field);
+ lkfclose(out, ctxpath);
+
+ SIGPROCMASK(SIG_SETMASK, &oset, &set); /* reset the signal mask */
+
+ if (action == 0)
+ _exit(0); /* we are child, time to die */