[libvirt] [PATCH] Fix several memory leaks

Hi, This patch fixes several memory leaks being scattered over libvirt. Thanks, ozaki-r From: Ryota Ozaki <ozaki.ryota(a)gmail.com&gt; 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