[libvirt] [PATCH] Fix several memory leaks

[Ryota Ozaki <ozaki.ryota@xxxxxxxxx>]

Hi,

This patch fixes several memory leaks being scattered
over libvirt.

Thanks,
  ozaki-r

>From 6fc282eae5192cccda208d8d4fd14c5c0676992b Mon Sep 17 00:00:00 2001
From: Ryota Ozaki <ozaki.ryota@xxxxxxxxx>
Date: Tue, 1 Sep 2009 01:34:40 +0900
Subject: [PATCH] Fix several memory leaks

---
 qemud/qemud.c            |    2 +-
 src/domain_conf.c        |    1 +
 src/network_conf.c       |    5 +++--
 src/qemu_conf.c          |   13 ++++++++-----
 src/storage_backend_fs.c |    5 +++++
 5 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/qemud/qemud.c b/qemud/qemud.c
index df275e6..17ba44a 100644
--- a/qemud/qemud.c
+++ b/qemud/qemud.c
@@ -1733,7 +1733,7 @@ readmore:

         /* Possibly need to create another receive buffer */
         if ((client->nrequests < max_client_requests &&
-             VIR_ALLOC(client->rx) < 0)) {
+             !client->rx && VIR_ALLOC(client->rx) < 0)) {
             qemudDispatchClientFailure(client);
         } else {
             if (client->rx)
diff --git a/src/domain_conf.c b/src/domain_conf.c
index 1d2cc7c..4b64219 100644
--- a/src/domain_conf.c
+++ b/src/domain_conf.c
@@ -4361,6 +4361,7 @@ int virDomainSaveXML(virConnectPtr conn,
  cleanup:
     if (fd != -1)
         close(fd);
+    VIR_FREE(configFile);
     return ret;
 }

diff --git a/src/network_conf.c b/src/network_conf.c
index bb649a4..58a4f32 100644
--- a/src/network_conf.c
+++ b/src/network_conf.c
@@ -820,6 +820,7 @@ int virNetworkDeleteConfig(virConnectPtr conn,
 {
     char *configFile = NULL;
     char *autostartLink = NULL;
+    int ret = -1;

     if ((configFile = virNetworkConfigFile(conn, configDir,
net->def->name)) == NULL)
         goto error;
@@ -836,12 +837,12 @@ int virNetworkDeleteConfig(virConnectPtr conn,
         goto error;
     }

-    return 0;
+    ret = 0;

 error:
     VIR_FREE(configFile);
     VIR_FREE(autostartLink);
-    return -1;
+    return ret;
 }

 char *virNetworkConfigFile(virConnectPtr conn,
diff --git a/src/qemu_conf.c b/src/qemu_conf.c
index 22f5edd..32d6a48 100644
--- a/src/qemu_conf.c
+++ b/src/qemu_conf.c
@@ -1034,7 +1034,7 @@ qemudNetworkIfaceConnect(virConnectPtr conn,
                          virDomainNetDefPtr net,
                          int qemuCmdFlags)
 {
-    char *brname;
+    char *brname = NULL;
     int err;
     int tapfd = -1;
     int vnet_hdr = 0;
@@ -1053,7 +1053,7 @@ qemudNetworkIfaceConnect(virConnectPtr conn,
         if (brname == NULL)
             return -1;
     } else if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
-        brname = net->data.bridge.brname;
+        brname = strdup(net->data.bridge.brname);
     } else {
         qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
                          _("Network type %d is not supported"), net->type);
@@ -1063,7 +1063,7 @@ qemudNetworkIfaceConnect(virConnectPtr conn,
     if (!driver->brctl && (err = brInit(&driver->brctl))) {
         virReportSystemError(conn, err, "%s",
                              _("cannot initialize bridge support"));
-        return -1;
+        goto cleanup;
     }

     if (!net->ifname ||
@@ -1072,7 +1072,7 @@ qemudNetworkIfaceConnect(virConnectPtr conn,
         VIR_FREE(net->ifname);
         if (!(net->ifname = strdup("vnet%d"))) {
             virReportOOMError(conn);
-            return -1;
+            goto cleanup;
         }
         /* avoid exposing vnet%d in dumpxml or error outputs */
         template_ifname = 1;
@@ -1100,9 +1100,12 @@ qemudNetworkIfaceConnect(virConnectPtr conn,
         }
         if (template_ifname)
             VIR_FREE(net->ifname);
-        return -1;
+        tapfd = -1;
     }

+cleanup:
+    VIR_FREE(brname);
+
     return tapfd;
 }

diff --git a/src/storage_backend_fs.c b/src/storage_backend_fs.c
index ca6d329..222e591 100644
--- a/src/storage_backend_fs.c
+++ b/src/storage_backend_fs.c
@@ -856,6 +856,8 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn,

         vol->type = VIR_STORAGE_VOL_FILE;
         vol->target.format = VIR_STORAGE_VOL_FILE_RAW; /* Real value
is filled in during probe */
+        if (vol->target.path)
+            VIR_FREE(vol->target.path);
         if (virAsprintf(&vol->target.path, "%s/%s",
                         pool->def->target.path,
                         vol->name) == -1)
@@ -1022,6 +1024,9 @@ virStorageBackendFileSystemVolCreate(virConnectPtr conn,

     vol->type = VIR_STORAGE_VOL_FILE;

+    if (vol->target.path)
+        VIR_FREE(vol->target.path);
+
     if (virAsprintf(&vol->target.path, "%s/%s",
                     pool->def->target.path,
                     vol->name) == -1) {
-- 
1.6.0.6

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