[libvirt] [PATCH libvirt-glib] Don't reference GError **err parameter if it is NULL
Christophe Fergeau
cfergeau at redhat.com
Tue Nov 22 14:50:46 UTC 2011
On Tue, Nov 22, 2011 at 02:18:15PM +0000, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange at redhat.com>
>
> ---
> libvirt-gobject/libvirt-gobject-connection.c | 104 +++++++++++++---------
> libvirt-gobject/libvirt-gobject-domain.c | 70 ++++++++------
> libvirt-gobject/libvirt-gobject-interface.c | 7 +-
> libvirt-gobject/libvirt-gobject-network-filter.c | 7 +-
> libvirt-gobject/libvirt-gobject-network.c | 7 +-
> libvirt-gobject/libvirt-gobject-node-device.c | 7 +-
> libvirt-gobject/libvirt-gobject-secret.c | 7 +-
> libvirt-gobject/libvirt-gobject-storage-pool.c | 53 +++++++-----
> libvirt-gobject/libvirt-gobject-storage-vol.c | 7 +-
> 9 files changed, 158 insertions(+), 111 deletions(-)
>
> diff --git a/libvirt-gobject/libvirt-gobject-connection.c b/libvirt-gobject/libvirt-gobject-connection.c
> index affb496..35be5e3 100644
> --- a/libvirt-gobject/libvirt-gobject-connection.c
> +++ b/libvirt-gobject/libvirt-gobject-connection.c
> @@ -389,19 +389,21 @@ gboolean gvir_connection_open(GVirConnection *conn,
>
> g_mutex_lock(priv->lock);
> if (priv->conn) {
> - *err = g_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Connection %s is already open",
> - priv->uri);
> + if (err)
> + *err = g_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Connection %s is already open",
> + priv->uri);
g_set_error(err, GVIR_CONNECTION_ERROR, 0, "Connection...); does exactly
that (test for non-NULL + g_error_new). I'm fine with this patch (ie ACK
from me), but it would be even better to introduce gvir_set_error(...) and
to use that. This can be done later though.
Christophe
> g_mutex_unlock(priv->lock);
> return FALSE;
> }
>
> if (!(priv->conn = virConnectOpen(priv->uri))) {
> - *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Unable to open %s",
> - priv->uri);
> + if (err)
> + *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Unable to open %s",
> + priv->uri);
> g_mutex_unlock(priv->lock);
> return FALSE;
> }
> @@ -540,9 +542,10 @@ static gchar ** fetch_list(virConnectPtr vconn,
> gint i;
>
> if ((n = count_func(vconn)) < 0) {
> - *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Unable to count %s", name);
> + if (err)
> + *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Unable to count %s", name);
> goto error;
> }
>
> @@ -552,9 +555,10 @@ static gchar ** fetch_list(virConnectPtr vconn,
>
> lst = g_new(gchar *, n);
> if ((n = list_func(vconn, lst, n)) < 0) {
> - *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Unable to list %s %d", name, n);
> + if (err)
> + *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Unable to list %s %d", name, n);
> goto error;
> }
> }
> @@ -587,12 +591,14 @@ gboolean gvir_connection_fetch_domains(GVirConnection *conn,
> gboolean ret = FALSE;
> gint i;
> virConnectPtr vconn = NULL;
> + GError *lerr = NULL;
>
> g_mutex_lock(priv->lock);
> if (!priv->conn) {
> - *err = g_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Connection is not open");
> + if (err)
> + *err = g_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Connection is not open");
> g_mutex_unlock(priv->lock);
> goto cleanup;
> }
> @@ -605,9 +611,10 @@ gboolean gvir_connection_fetch_domains(GVirConnection *conn,
> goto cleanup;
>
> if ((nactive = virConnectNumOfDomains(vconn)) < 0) {
> - *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Unable to count domains");
> + if (err)
> + *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Unable to count domains");
> goto cleanup;
> }
> if (nactive) {
> @@ -616,9 +623,10 @@ gboolean gvir_connection_fetch_domains(GVirConnection *conn,
>
> active = g_new(gint, nactive);
> if ((nactive = virConnectListDomains(vconn, active, nactive)) < 0) {
> - *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Unable to list domains");
> + if (err)
> + *err = gvir_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Unable to list domains");
> goto cleanup;
> }
> }
> @@ -632,9 +640,12 @@ gboolean gvir_connection_fetch_domains(GVirConnection *conn,
> virConnectListDefinedDomains,
> cancellable,
> &ninactive,
> - err);
> - if (*err != NULL)
> + &lerr);
> + if (lerr) {
> + g_propagate_error(err, lerr);
> + lerr = NULL;
> goto cleanup;
> + }
>
> doms = g_hash_table_new_full(g_str_hash,
> g_str_equal,
> @@ -712,12 +723,14 @@ gboolean gvir_connection_fetch_storage_pools(GVirConnection *conn,
> gboolean ret = FALSE;
> gint i;
> virConnectPtr vconn = NULL;
> + GError *lerr = NULL;
>
> g_mutex_lock(priv->lock);
> if (!priv->conn) {
> - *err = g_error_new(GVIR_CONNECTION_ERROR,
> - 0,
> - "Connection is not open");
> + if (err)
> + *err = g_error_new(GVIR_CONNECTION_ERROR,
> + 0,
> + "Connection is not open");
> g_mutex_unlock(priv->lock);
> goto cleanup;
> }
> @@ -735,9 +748,12 @@ gboolean gvir_connection_fetch_storage_pools(GVirConnection *conn,
> virConnectListStoragePools,
> cancellable,
> &nactive,
> - err);
> - if (*err != NULL)
> + &lerr);
> + if (lerr) {
> + g_propagate_error(err, lerr);
> + lerr = NULL;
> goto cleanup;
> + }
>
> if (g_cancellable_set_error_if_cancelled(cancellable, err))
> goto cleanup;
> @@ -748,9 +764,12 @@ gboolean gvir_connection_fetch_storage_pools(GVirConnection *conn,
> virConnectListDefinedStoragePools,
> cancellable,
> &ninactive,
> - err);
> - if (*err != NULL)
> + &lerr);
> + if (lerr) {
> + g_propagate_error(err, lerr);
> + lerr = NULL;
> goto cleanup;
> + }
>
> pools = g_hash_table_new_full(g_str_hash,
> g_str_equal,
> @@ -1189,9 +1208,10 @@ GVirDomain *gvir_connection_create_domain(GVirConnection *conn,
> g_return_val_if_fail(xml != NULL, NULL);
>
> if (!(handle = virDomainDefineXML(priv->conn, xml))) {
> - *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> - 0,
> - "Failed to create domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> + 0,
> + "Failed to create domain");
> return NULL;
> }
>
> @@ -1234,9 +1254,10 @@ GVirDomain *gvir_connection_start_domain(GVirConnection *conn,
> g_return_val_if_fail(xml != NULL, NULL);
>
> if (!(handle = virDomainCreateXML(priv->conn, xml, flags))) {
> - *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> - 0,
> - "Failed to create domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> + 0,
> + "Failed to create domain");
> return NULL;
> }
>
> @@ -1278,9 +1299,10 @@ GVirStoragePool *gvir_connection_create_storage_pool
> g_return_val_if_fail(xml != NULL, NULL);
>
> if (!(handle = virStoragePoolDefineXML(priv->conn, xml, flags))) {
> - *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> - flags,
> - "Failed to create storage pool");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_CONNECTION_ERROR,
> + flags,
> + "Failed to create storage pool");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-domain.c b/libvirt-gobject/libvirt-gobject-domain.c
> index 4a7a534..36d618c 100644
> --- a/libvirt-gobject/libvirt-gobject-domain.c
> +++ b/libvirt-gobject/libvirt-gobject-domain.c
> @@ -287,9 +287,10 @@ gint gvir_domain_get_id(GVirDomain *dom,
> gint ret;
>
> if ((ret = virDomainGetID(priv->handle)) < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to get ID for domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to get ID for domain");
> }
> return ret;
> }
> @@ -312,9 +313,10 @@ gboolean gvir_domain_start(GVirDomain *dom,
> else
> ret = virDomainCreate(priv->handle);
> if (ret < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to start domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to start domain");
> return FALSE;
> }
>
> @@ -333,9 +335,10 @@ gboolean gvir_domain_resume(GVirDomain *dom,
> GVirDomainPrivate *priv = dom->priv;
>
> if (virDomainResume(priv->handle) < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to resume domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to resume domain");
> return FALSE;
> }
>
> @@ -359,9 +362,10 @@ gboolean gvir_domain_stop(GVirDomain *dom,
> else
> ret = virDomainDestroy(priv->handle);
> if (ret < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to stop domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to stop domain");
> return FALSE;
> }
>
> @@ -385,9 +389,10 @@ gboolean gvir_domain_delete(GVirDomain *dom,
> else
> ret = virDomainUndefine(priv->handle);
> if (ret < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to delete domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to delete domain");
> return FALSE;
> }
>
> @@ -406,9 +411,10 @@ gboolean gvir_domain_shutdown(GVirDomain *dom,
> GVirDomainPrivate *priv = dom->priv;
>
> if (virDomainShutdown(priv->handle) < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to shutdown domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to shutdown domain");
> return FALSE;
> }
>
> @@ -427,9 +433,10 @@ gboolean gvir_domain_reboot(GVirDomain *dom,
> GVirDomainPrivate *priv = dom->priv;
>
> if (virDomainReboot(priv->handle, flags) < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to reboot domain");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to reboot domain");
> return FALSE;
> }
>
> @@ -450,9 +457,10 @@ GVirConfigDomain *gvir_domain_get_config(GVirDomain *dom,
> gchar *xml;
>
> if (!(xml = virDomainGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to get domain XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to get domain XML config");
> return NULL;
> }
>
> @@ -546,9 +554,10 @@ GVirDomainInfo *gvir_domain_get_info(GVirDomain *dom,
> GVirDomainInfo *ret;
>
> if (virDomainGetInfo(priv->handle, &info) < 0) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to get domain info");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to get domain info");
> return NULL;
> }
>
> @@ -590,9 +599,10 @@ gchar *gvir_domain_screenshot(GVirDomain *dom,
> st,
> monitor_id,
> flags))) {
> - *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> - 0,
> - "Unable to take a screenshot");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_DOMAIN_ERROR,
> + 0,
> + "Unable to take a screenshot");
> goto end;
> }
> end:
> diff --git a/libvirt-gobject/libvirt-gobject-interface.c b/libvirt-gobject/libvirt-gobject-interface.c
> index e47395c..7af83ee 100644
> --- a/libvirt-gobject/libvirt-gobject-interface.c
> +++ b/libvirt-gobject/libvirt-gobject-interface.c
> @@ -193,9 +193,10 @@ GVirConfigInterface *gvir_interface_get_config(GVirInterface *iface,
> gchar *xml;
>
> if (!(xml = virInterfaceGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_INTERFACE_ERROR,
> - 0,
> - "Unable to get interface XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_INTERFACE_ERROR,
> + 0,
> + "Unable to get interface XML config");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-network-filter.c b/libvirt-gobject/libvirt-gobject-network-filter.c
> index bdb0e3a..7107e3b 100644
> --- a/libvirt-gobject/libvirt-gobject-network-filter.c
> +++ b/libvirt-gobject/libvirt-gobject-network-filter.c
> @@ -219,9 +219,10 @@ GVirConfigNetworkFilter *gvir_network_filter_get_config
> gchar *xml;
>
> if (!(xml = virNWFilterGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_NETWORK_FILTER_ERROR,
> - 0,
> - "Unable to get network_filter XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_NETWORK_FILTER_ERROR,
> + 0,
> + "Unable to get network_filter XML config");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-network.c b/libvirt-gobject/libvirt-gobject-network.c
> index c486561..b2cb2ec 100644
> --- a/libvirt-gobject/libvirt-gobject-network.c
> +++ b/libvirt-gobject/libvirt-gobject-network.c
> @@ -215,9 +215,10 @@ GVirConfigNetwork *gvir_network_get_config(GVirNetwork *network,
> gchar *xml;
>
> if (!(xml = virNetworkGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_NETWORK_ERROR,
> - 0,
> - "Unable to get network XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_NETWORK_ERROR,
> + 0,
> + "Unable to get network XML config");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-node-device.c b/libvirt-gobject/libvirt-gobject-node-device.c
> index 43564b6..eb19513 100644
> --- a/libvirt-gobject/libvirt-gobject-node-device.c
> +++ b/libvirt-gobject/libvirt-gobject-node-device.c
> @@ -194,9 +194,10 @@ GVirConfigNodeDevice *gvir_node_device_get_config(GVirNodeDevice *device,
> gchar *xml;
>
> if (!(xml = virNodeDeviceGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_NODE_DEVICE_ERROR,
> - 0,
> - "Unable to get node_device XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_NODE_DEVICE_ERROR,
> + 0,
> + "Unable to get node_device XML config");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-secret.c b/libvirt-gobject/libvirt-gobject-secret.c
> index 418e5aa..0365e8d 100644
> --- a/libvirt-gobject/libvirt-gobject-secret.c
> +++ b/libvirt-gobject/libvirt-gobject-secret.c
> @@ -205,9 +205,10 @@ GVirConfigSecret *gvir_secret_get_config(GVirSecret *secret,
> gchar *xml;
>
> if (!(xml = virSecretGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_SECRET_ERROR,
> - 0,
> - "Unable to get secret XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_SECRET_ERROR,
> + 0,
> + "Unable to get secret XML config");
> return NULL;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-storage-pool.c b/libvirt-gobject/libvirt-gobject-storage-pool.c
> index 92be539..d398532 100644
> --- a/libvirt-gobject/libvirt-gobject-storage-pool.c
> +++ b/libvirt-gobject/libvirt-gobject-storage-pool.c
> @@ -230,9 +230,10 @@ GVirConfigStoragePool *gvir_storage_pool_get_config(GVirStoragePool *pool,
> gchar *xml;
>
> if (!(xml = virStoragePoolGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> - 0,
> - "Unable to get storage_pool XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> + 0,
> + "Unable to get storage_pool XML config");
> return NULL;
> }
>
> @@ -303,25 +304,30 @@ gboolean gvir_storage_pool_refresh(GVirStoragePool *pool,
> gboolean ret = FALSE;
> gint i;
> virStoragePoolPtr vpool = NULL;
> + GError *lerr = NULL;
>
> vpool = priv->handle;
>
> if (virStoragePoolRefresh(vpool, 0) < 0) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> - 0,
> - "Unable to refresh storage pool");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> + 0,
> + "Unable to refresh storage pool");
> goto cleanup;
> }
>
> volumes = fetch_list(vpool,
> - "Storage Volumes",
> - virStoragePoolNumOfVolumes,
> - virStoragePoolListVolumes,
> - cancellable,
> - &nvolumes,
> - err);
> - if (*err != NULL)
> + "Storage Volumes",
> + virStoragePoolNumOfVolumes,
> + virStoragePoolListVolumes,
> + cancellable,
> + &nvolumes,
> + &lerr);
> + if (lerr) {
> + g_propagate_error(err, lerr);
> + lerr = NULL;
> goto cleanup;
> + }
>
> if (g_cancellable_set_error_if_cancelled(cancellable, err))
> goto cleanup;
> @@ -495,9 +501,10 @@ GVirStorageVol *gvir_storage_pool_create_volume
> g_return_val_if_fail(xml != NULL, NULL);
>
> if (!(handle = virStorageVolCreateXML(priv->handle, xml, 0))) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> - 0,
> - "Failed to create volume");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> + 0,
> + "Failed to create volume");
> return NULL;
> }
>
> @@ -529,9 +536,10 @@ gboolean gvir_storage_pool_build (GVirStoragePool *pool,
> GError **err)
> {
> if (virStoragePoolBuild(pool->priv->handle, flags)) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> - 0,
> - "Failed to build storage pool");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> + 0,
> + "Failed to build storage pool");
> return FALSE;
> }
>
> @@ -633,9 +641,10 @@ gboolean gvir_storage_pool_start (GVirStoragePool *pool,
> GError **err)
> {
> if (virStoragePoolCreate(pool->priv->handle, flags)) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> - 0,
> - "Failed to start storage pool");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_POOL_ERROR,
> + 0,
> + "Failed to start storage pool");
> return FALSE;
> }
>
> diff --git a/libvirt-gobject/libvirt-gobject-storage-vol.c b/libvirt-gobject/libvirt-gobject-storage-vol.c
> index 17aac36..8fea736 100644
> --- a/libvirt-gobject/libvirt-gobject-storage-vol.c
> +++ b/libvirt-gobject/libvirt-gobject-storage-vol.c
> @@ -205,9 +205,10 @@ GVirConfigStorageVol *gvir_storage_vol_get_config(GVirStorageVol *vol,
> gchar *xml;
>
> if (!(xml = virStorageVolGetXMLDesc(priv->handle, flags))) {
> - *err = gvir_error_new_literal(GVIR_STORAGE_VOL_ERROR,
> - 0,
> - "Unable to get storage_vol XML config");
> + if (err)
> + *err = gvir_error_new_literal(GVIR_STORAGE_VOL_ERROR,
> + 0,
> + "Unable to get storage_vol XML config");
> return NULL;
> }
>
> --
> 1.7.6.4
>
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
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