From d246bd965898f0ba6781f2b2048af9a5eba079d3 Mon Sep 17 00:00:00 2001
From: ajs <ajs>
Date: Tue, 23 Nov 2004 17:35:08 +0000
Subject: 2004-11-23 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

	* log.c: (vzlog) Take a single va_list argument and use va_copy
	  as necessary for multiple traversals.
	  (zlog) Pass only one va_list to vzlog.
	  (zlog_*,plog_*) Use a macro for boilerplate code; pass only one
	  va_list to vzlog.
	  (zlog_set_file) Remove unused 2nd argument (flags).
	  (zlog_save_cwd,zlog_get_cwd,zlog_free_cwd) Remove unused functions.
	* log.h: Remove ZLOG_*_INDEX defines (no longer used).
	  Remove unused 2nd argument from zlog_set_file prototype.
	  Fix prototype for zlog_rotate.
	* command.c: (config_log_file) Remove unused 2nd arg to zlog_set_file.
	* vty.c: (vty_out) Fix stdarg usage to perform multiple traversals
	  properly.
	  (vty_log) Must use va_copy for multiple traversals of va_list arg.
---
 lib/vty.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

(limited to 'lib/vty.c')

diff --git a/lib/vty.c b/lib/vty.c
index 016e52a9..2f3bac2e 100644
--- a/lib/vty.c
+++ b/lib/vty.c
@@ -95,21 +95,27 @@ vty_out (struct vty *vty, const char *format, ...)
   int size = 1024;
   char buf[1024];
   char *p = NULL;
-  
-  va_start (args, format);
 
   if (vty_shell (vty))
-    vprintf (format, args);
+    {
+      va_start (args, format);
+      vprintf (format, args);
+      va_end (args);
+    }
   else
     {
       /* Try to write to initial buffer.  */
+      va_start (args, format);
       len = vsnprintf (buf, sizeof buf, format, args);
+      va_end (args);
 
       /* Initial buffer is not enough.  */
       if (len < 0 || len >= size)
 	{
 	  while (1)
 	    {
+	      va_list ac;
+
 	      if (len > -1)
 		size = len + 1;
 	      else
@@ -119,7 +125,9 @@ vty_out (struct vty *vty, const char *format, ...)
 	      if (! p)
 		return -1;
 
+	      va_start (args, format);
 	      len = vsnprintf (p, size, format, args);
+	      va_end (args);
 
 	      if (len > -1 && len < size)
 		break;
@@ -138,12 +146,10 @@ vty_out (struct vty *vty, const char *format, ...)
 	XFREE (MTYPE_VTY_OUT_BUF, p);
     }
 
-  va_end (args);
-
   return len;
 }
 
-int
+static int
 vty_log_out (struct vty *vty, const char *proto_str, const char *format,
 	     va_list va)
 {
@@ -2277,7 +2283,12 @@ vty_log (const char *proto_str, const char *format, va_list va)
   for (i = 0; i < vector_max (vtyvec); i++)
     if ((vty = vector_slot (vtyvec, i)) != NULL)
       if (vty->monitor)
-	vty_log_out (vty, proto_str, format, va);
+	{
+	  va_list ac;
+	  va_copy(ac, va);
+	  vty_log_out (vty, proto_str, format, ac);
+	  va_end(ac);
+	}
 }
 
 int
-- 
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