X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Fcontext_save.c;h=7d99cc3770a51469b5ee0f5c4828e9d7dac8b5a6;hp=b3f8168bed12c7ec6d6f9ee940c577166c02011f;hb=ced6090a330d3d83d0bce709f756aa3d7d65fea4;hpb=1691e80890e5d8ba258c51c214a3e91880e1db2b

diff --git a/sbr/context_save.c b/sbr/context_save.c
index b3f8168..7d99cc3 100644
--- a/sbr/context_save.c
+++ b/sbr/context_save.c
@@ -1,90 +1,95 @@
-
 /*
- * context_save.c -- write out the updated context file
- *
- * $Id$
- */
+** context_save.c -- write out the updated context file
+**
+** 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>
 #include <h/signals.h>
 
 /*
- * static prototypes
- */
+** static prototypes
+*/
 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 */
 }
 
 /*
- * This hack brought to you so we can handle set[ug]id MH programs.
- * If we return -1, then no fork is made, we update .mh_profile
- * normally, and return to the caller normally.  If we return 0,
- * then the child is executing, .mh_profile is modified after
- * we set our [ug]ids to the norm.  If we return > 0, then the
- * parent is executed and .mh_profile has already be modified.
- * We can just return to the caller immediately.
- */
+** This hack brought to you so we can handle set[ug]id MH programs.
+** If we return -1, then no fork is made, we update .mh_profile
+** normally, and return to the caller normally.  If we return 0,
+** then the child is executing, .mh_profile is modified after
+** we set our [ug]ids to the norm.  If we return > 0, then the
+** parent is executed and .mh_profile has already be modified.
+** We can just return to the caller immediately.
+*/
 
 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;
 }