[libvirt] [PATCH] remove useless comparisons in lxc_driver, vbox_tmpl.c

[Jim Meyering]

Here are two change sets.
They remove useless comparisons of the style

-        if (def->nets[i]->mac) {

where the mac member is declared as an array.

>From d22b04d2684d5a16f797d8df0c2ef036b5b1b2ce Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Mon, 18 Jan 2010 09:49:57 +0100
Subject: [PATCH 1/2] lxc_driver: remove useless comparison

* src/lxc/lxc_driver.c (lxcSetupInterfaces): Remove always-true
array-is-non-NULL test.  git grep 'mac\[.*\];'|grep -F .h
src/conf/domain_conf.h:    unsigned char mac[VIR_MAC_BUFLEN];
---
 src/lxc/lxc_driver.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 86606c7..94ec874 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -834,7 +834,7 @@ static int lxcSetupInterfaces(virConnectPtr conn,
             goto error_exit;
         }

-        if (def->nets[i]->mac) {
+        {
             char macaddr[VIR_MAC_STRING_BUFLEN];
             virFormatMacAddr(def->nets[i]->mac, macaddr);
             if (0 != (rc = setMacAddr(containerVeth, macaddr))) {
--
1.6.6.638.g2bc54


>From c751c0cf3352b08d674bb59efd987f106fc1fffb Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Mon, 18 Jan 2010 09:58:57 +0100
Subject: [PATCH 2/2] vbox_tmpl.c: remove useless array-is-non-NULL comparisons

* src/vbox/vbox_tmpl.c (vboxStorageVolDelete): Remove always-true
array-is-non-NULL test.  git grep 'key\[.*\];'|grep -F .h
src/datatypes.h:    char key[PATH_MAX];
(vboxStorageVolGetInfo): Likewise.
(vboxStorageVolGetXMLDesc): Likewise.
(vboxStorageVolGetPath): Likewise.
(vboxDomainDefineXML): Likewise. (but now with "mac[]")
---
 src/vbox/vbox_tmpl.c |   16 ++--------------
 1 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index 07696c0..e40c848 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -4084,9 +4084,7 @@ static virDomainPtr vboxDomainDefineXML(virConnectPtr conn, const char *xml) {
                 }

                 VBOX_UTF8_TO_UTF16(macaddrvbox, &MACAddress);
-                if (def->nets[i]->mac) {
-                    adapter->vtbl->SetMACAddress(adapter, MACAddress);
-                }
+                adapter->vtbl->SetMACAddress(adapter, MACAddress);
                 VBOX_UTF16_FREE(MACAddress);
             }
         }
@@ -6645,9 +6643,6 @@ static int vboxStorageVolDelete(virStorageVolPtr vol,
     int i = 0;
     int j = 0;

-    if (!vol->key)
-        return ret;
-
     vboxUtf8toIID(vol->conn, vol->key, &hddIID);
     if (!hddIID)
         return ret;
@@ -6774,8 +6769,7 @@ static int vboxStorageVolGetInfo(virStorageVolPtr vol, virStorageVolInfoPtr info
     vboxIID   *hddIID    = NULL;
     nsresult rc;

-    if (   !vol->key
-        || !info)
+    if (!info)
         return ret;

     vboxUtf8toIID(vol->conn, vol->key, &hddIID);
@@ -6824,9 +6818,6 @@ static char *vboxStorageVolGetXMLDesc(virStorageVolPtr vol, unsigned int flags A
     int defOk = 0;
     nsresult rc;

-    if (!vol->key)
-        return ret;
-
     memset(&pool, 0, sizeof(pool));
     memset(&def, 0, sizeof(def));

@@ -6919,9 +6910,6 @@ static char *vboxStorageVolGetPath(virStorageVolPtr vol) {
     vboxIID   *hddIID    = NULL;
     nsresult rc;

-    if (!vol->key)
-        return ret;
-
     vboxUtf8toIID(vol->conn, vol->key, &hddIID);
     if (!hddIID)
         return ret;
--
1.6.6.638.g2bc54