Support re-reading config files on SIGHUP.

[fwd] / exec.c

diff --git a/exec.c b/exec.c
index 1900017..e73500d 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: exec.c,v 1.1 1999/07/26 23:33:32 mdw Exp $
+ * $Id: exec.c,v 1.4 2001/02/03 20:30:03 mdw Exp $
  *
  * Source and target for executable programs
  *
@@ -29,6 +29,17 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: exec.c,v $
+ * Revision 1.4  2001/02/03 20:30:03  mdw
+ * Support re-reading config files on SIGHUP.
+ *
+ * Revision 1.3  2000/07/01 11:28:52  mdw
+ * Use new mLib selbuf features.
+ *
+ * Revision 1.2  1999/10/22 22:46:17  mdw
+ * When a non-file endpoint is attached to a file, keep the file endpoint
+ * open until the nonfile is done.  This stops socket sources from
+ * resetting their connection limits too early.
+ *
  * Revision 1.1  1999/07/26 23:33:32  mdw
  * New sources and targets.
  *
@@ -146,7 +157,8 @@ typedef struct xept {
   endpt e;
   struct xept *next, *prev;
   pid_t kid;
-  const char *desc;
+  endpt *f;
+  char *desc;
   int st;
   xargs *xa;
   xopts *xo;
@@ -627,12 +639,22 @@ static void xept_attach(endpt *e, reffd *in, reffd *out)
   return;
 }
 
+/* --- @xept_file@ --- */
+
+static void xept_file(endpt *e, endpt *f)
+{
+  xept *xe = (xept *)e;
+  xe->f = f;
+}
+
 /* --- @xept_close@ --- */
 
 static void xept_close(endpt *e)
 {
   xept *xe = (xept *)e;
   if (xe->kid == -1) {
+    if (xe->f)
+      xe->f->ops->close(xe->f);
     x_tidy(xe->xa, xe->xo);
     DESTROY(xe);
     fw_dec();
@@ -678,6 +700,9 @@ static void xept_destroy(xept *xe)
   else
     xept_list = xe->next;
 
+  free(xe->desc);
+  if (xe->f)
+    xe->f->ops->close(xe->f);
   x_tidy(xe->xa, xe->xo);
   fw_dec();
   DESTROY(xe);
@@ -730,8 +755,8 @@ static void xept_error(char *p, void *v)
   if (p)
     fw_log(-1, "[%s] pid %i: %s", xe->desc, xe->kid, p);
   else {
-    selbuf_disable(&xe->err);
     close(xe->err.reader.fd);
+    selbuf_destroy(&xe->err);
     xe->e.f |= XEF_CLOSE;
     if (xe->e.f & XEF_EXIT)
       xept_destroy(xe);
@@ -740,7 +765,7 @@ static void xept_error(char *p, void *v)
 
 /* --- Endpoint operations --- */
 
-static endpt_ops xept_ops = { xept_attach, 0, xept_close };
+static endpt_ops xept_ops = { xept_attach, xept_file, 0, xept_close };
 
 /*----- General operations on sources and targets -------------------------*/
 
@@ -1007,7 +1032,8 @@ static endpt *exec_endpt(xdata *x, const char *desc)
   xe->xa = x->xa; xe->xa->ref++;
   xe->xo = x->xo; xe->xo->ref++;
   xe->kid = -1;
-  xe->desc = desc;
+  xe->f = 0;
+  xe->desc = xstrdup(desc);
   return (&xe->e);
 }
 
@@ -1085,6 +1111,7 @@ tidy:
 static void xsource_destroy(source *s)
 {
   xsource *xs = (xsource *)s;
+  free(xs->s.desc);
   exec_destroy(&xs->x);
   DESTROY(xs);
 }
@@ -1138,6 +1165,7 @@ static endpt *xtarget_create(target *t, const char *desc)
 static void xtarget_destroy(target *t)
 {
   xtarget *xt = (xtarget *)t;
+  free(xt->t.desc);
   exec_destroy(&xt->x);
   DESTROY(xt);
 }