[PATCH] Allow maxnames to be 0 in List{, Defined}{Domains, Networks}

["Richard W.M. Jones" <rjones@xxxxxxxxxx>]

It seems a bit pathological to check if maxNames <= 0 and throw an error 
if it is 0.  In particular if you don't have any defined domains or 
networks (both fairly common scenarios) then this causes an error when 
you just pass the result of NumOfNetworks straight into ListNetworks. 
Backend drivers & QEMU seem to have no problem with maxNames being zero, 
so let's allow it.

Rich.

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Index: src/libvirt.c
===================================================================
RCS file: /data/cvs/libvirt/src/libvirt.c,v
retrieving revision 1.77
diff -u -p -r1.77 libvirt.c
--- src/libvirt.c	20 Jun 2007 17:25:39 -0000	1.77
+++ src/libvirt.c	22 Jun 2007 16:58:02 -0000
@@ -510,7 +510,7 @@ virConnectListDomains(virConnectPtr conn
         return (-1);
     }
 
-    if ((ids == NULL) || (maxids <= 0)) {
+    if ((ids == NULL) || (maxids < 0)) {
         virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
         return (-1);
     }
@@ -1682,7 +1682,7 @@ virConnectListDefinedDomains(virConnectP
         return (-1);
     }
 
-    if ((names == NULL) || (maxnames <= 0)) {
+    if ((names == NULL) || (maxnames < 0)) {
         virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
         return (-1);
     }
@@ -2077,7 +2077,7 @@ virConnectListNetworks(virConnectPtr con
         return (-1);
     }
 
-    if ((names == NULL) || (maxnames <= 0)) {
+    if ((names == NULL) || (maxnames < 0)) {
         virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
         return (-1);
     }
@@ -2131,7 +2131,7 @@ virConnectListDefinedNetworks(virConnect
         return (-1);
     }
 
-    if ((names == NULL) || (maxnames <= 0)) {
+    if ((names == NULL) || (maxnames < 0)) {
         virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
         return (-1);
     }

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