X-Git-Url: http://git.marmaro.de/?a=blobdiff_plain;f=sbr%2Fcontext_save.c;h=d4a56edc624d7d26a162449d810cbc843774e3b5;hb=18017df38ebb626f6eed6f339641fd1298c326e7;hp=b3f8168bed12c7ec6d6f9ee940c577166c02011f;hpb=1691e80890e5d8ba258c51c214a3e91880e1db2b;p=mmh

diff --git a/sbr/context_save.c b/sbr/context_save.c
index b3f8168..d4a56ed 100644
--- a/sbr/context_save.c
+++ b/sbr/context_save.c
@@ -1,8 +1,9 @@
-
 /*
  * context_save.c -- write out the updated context file
  *
- * $Id$
+ * This code is Copyright (c) 2002, by the authors of nmh.  See the
+ * COPYRIGHT file in the root directory of the nmh distribution for
+ * complete copyright information.
  */
 
 #include <h/mh.h>
@@ -17,37 +18,41 @@ static int m_chkids(void);
 void
 context_save (void)
 {
-    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 = fopen (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);
-    fclose (out);
-
-    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 */
 }
 
 /*
@@ -63,28 +68,28 @@ context_save (void)
 static int
 m_chkids (void)
 {
-    int i;
-    pid_t pid;
+	int i;
+	pid_t pid;
 
-    if (getuid () == geteuid ())
-	return (-1);
+	if (getuid () == geteuid ())
+		return (-1);
 
-    for (i = 0; (pid = fork ()) == -1 && i < 5; i++)
-	sleep (5);
+	for (i = 0; (pid = fork ()) == -1 && i < 5; i++)
+		sleep (5);
 
-    switch (pid) {
-	case -1:
-	    break;
+	switch (pid) {
+		case -1:
+			break;
 
-	case 0:
-	    setgid (getgid ());
-	    setuid (getuid ());
-	    break;
+		case 0:
+			setgid (getgid ());
+			setuid (getuid ());
+			break;
 
-	default:
-	    pidwait (pid, -1);
-	    break;
-    }
+		default:
+			pidwait (pid, -1);
+			break;
+	}
 
-    return pid;
+	return pid;
 }