vfio/pci: Use local error object in vfio_initfn
To prepare for migration to realize, let's use a local error object in vfio_initfn. Also let's use the same error prefix for all error messages. On top of the 1-1 conversion, we start using a common error prefix for all error messages. We also introduce a similar warning prefix which will be used later on. Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Auger
Alex Williamson
parent
0975b8b823
commit
426ec9049e
@ -2493,6 +2493,7 @@ static int vfio_initfn(PCIDevice *pdev)
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VFIODevice *vbasedev_iter;
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VFIOGroup *group;
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char *tmp, group_path[PATH_MAX], *group_name;
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Error *err = NULL;
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ssize_t len;
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struct stat st;
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int groupid;
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@ -2506,9 +2507,9 @@ static int vfio_initfn(PCIDevice *pdev)
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}
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if (stat(vdev->vbasedev.sysfsdev, &st) < 0) {
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error_report("vfio: error: no such host device: %s",
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vdev->vbasedev.sysfsdev);
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return -errno;
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error_setg_errno(&err, errno, "no such host device");
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ret = -errno;
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goto error;
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}
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vdev->vbasedev.name = g_strdup(basename(vdev->vbasedev.sysfsdev));
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@ -2520,40 +2521,43 @@ static int vfio_initfn(PCIDevice *pdev)
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g_free(tmp);
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if (len <= 0 || len >= sizeof(group_path)) {
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error_report("vfio: error no iommu_group for device");
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return len < 0 ? -errno : -ENAMETOOLONG;
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ret = len < 0 ? -errno : -ENAMETOOLONG;
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error_setg_errno(&err, -ret, "no iommu_group found");
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goto error;
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}
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group_path[len] = 0;
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group_name = basename(group_path);
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if (sscanf(group_name, "%d", &groupid) != 1) {
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error_report("vfio: error reading %s: %m", group_path);
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return -errno;
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error_setg_errno(&err, errno, "failed to read %s", group_path);
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ret = -errno;
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goto error;
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}
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trace_vfio_initfn(vdev->vbasedev.name, groupid);
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group = vfio_get_group(groupid, pci_device_iommu_address_space(pdev));
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if (!group) {
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error_report("vfio: failed to get group %d", groupid);
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return -ENOENT;
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error_setg(&err, "failed to get group %d", groupid);
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ret = -ENOENT;
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goto error;
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}
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QLIST_FOREACH(vbasedev_iter, &group->device_list, next) {
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if (strcmp(vbasedev_iter->name, vdev->vbasedev.name) == 0) {
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error_report("vfio: error: device %s is already attached",
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vdev->vbasedev.name);
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error_setg(&err, "device is already attached");
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vfio_put_group(group);
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return -EBUSY;
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ret = -EBUSY;
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goto error;
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}
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}
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ret = vfio_get_device(group, vdev->vbasedev.name, &vdev->vbasedev);
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if (ret) {
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error_report("vfio: failed to get device %s", vdev->vbasedev.name);
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error_setg_errno(&err, -ret, "failed to get device");
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vfio_put_group(group);
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return ret;
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goto error;
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}
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ret = vfio_populate_device(vdev);
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@ -2567,8 +2571,8 @@ static int vfio_initfn(PCIDevice *pdev)
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vdev->config_offset);
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if (ret < (int)MIN(pci_config_size(&vdev->pdev), vdev->config_size)) {
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ret = ret < 0 ? -errno : -EFAULT;
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error_report("vfio: Failed to read device config space");
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return ret;
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error_setg_errno(&err, -ret, "failed to read device config space");
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goto error;
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}
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/* vfio emulates a lot for us, but some bits need extra love */
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@ -2584,8 +2588,9 @@ static int vfio_initfn(PCIDevice *pdev)
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*/
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if (vdev->vendor_id != PCI_ANY_ID) {
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if (vdev->vendor_id >= 0xffff) {
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error_report("vfio: Invalid PCI vendor ID provided");
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return -EINVAL;
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error_setg(&err, "invalid PCI vendor ID provided");
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ret = -EINVAL;
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goto error;
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}
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vfio_add_emulated_word(vdev, PCI_VENDOR_ID, vdev->vendor_id, ~0);
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trace_vfio_pci_emulated_vendor_id(vdev->vbasedev.name, vdev->vendor_id);
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@ -2595,8 +2600,9 @@ static int vfio_initfn(PCIDevice *pdev)
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if (vdev->device_id != PCI_ANY_ID) {
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if (vdev->device_id > 0xffff) {
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error_report("vfio: Invalid PCI device ID provided");
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return -EINVAL;
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error_setg(&err, "invalid PCI device ID provided");
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ret = -EINVAL;
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goto error;
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}
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vfio_add_emulated_word(vdev, PCI_DEVICE_ID, vdev->device_id, ~0);
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trace_vfio_pci_emulated_device_id(vdev->vbasedev.name, vdev->device_id);
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@ -2606,8 +2612,9 @@ static int vfio_initfn(PCIDevice *pdev)
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if (vdev->sub_vendor_id != PCI_ANY_ID) {
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if (vdev->sub_vendor_id > 0xffff) {
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error_report("vfio: Invalid PCI subsystem vendor ID provided");
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return -EINVAL;
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error_setg(&err, "invalid PCI subsystem vendor ID provided");
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ret = -EINVAL;
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goto error;
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}
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vfio_add_emulated_word(vdev, PCI_SUBSYSTEM_VENDOR_ID,
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vdev->sub_vendor_id, ~0);
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@ -2617,8 +2624,9 @@ static int vfio_initfn(PCIDevice *pdev)
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if (vdev->sub_device_id != PCI_ANY_ID) {
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if (vdev->sub_device_id > 0xffff) {
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error_report("vfio: Invalid PCI subsystem device ID provided");
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return -EINVAL;
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error_setg(&err, "invalid PCI subsystem device ID provided");
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ret = -EINVAL;
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goto error;
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}
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vfio_add_emulated_word(vdev, PCI_SUBSYSTEM_ID, vdev->sub_device_id, ~0);
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trace_vfio_pci_emulated_sub_device_id(vdev->vbasedev.name,
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@ -2671,8 +2679,9 @@ static int vfio_initfn(PCIDevice *pdev)
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struct vfio_region_info *opregion;
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if (vdev->pdev.qdev.hotplugged) {
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error_report("Cannot support IGD OpRegion feature on hotplugged "
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"device %s", vdev->vbasedev.name);
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error_setg(&err,
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"cannot support IGD OpRegion feature on hotplugged "
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"device");
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ret = -EINVAL;
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goto out_teardown;
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}
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@ -2681,16 +2690,15 @@ static int vfio_initfn(PCIDevice *pdev)
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VFIO_REGION_TYPE_PCI_VENDOR_TYPE | PCI_VENDOR_ID_INTEL,
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VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION, &opregion);
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if (ret) {
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error_report("Device %s does not support requested IGD OpRegion "
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"feature", vdev->vbasedev.name);
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error_setg_errno(&err, -ret,
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"does not support requested IGD OpRegion feature");
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goto out_teardown;
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}
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ret = vfio_pci_igd_opregion_init(vdev, opregion);
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g_free(opregion);
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if (ret) {
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error_report("Device %s IGD OpRegion initialization failed",
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vdev->vbasedev.name);
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error_setg_errno(&err, -ret, "IGD OpRegion initialization failed");
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goto out_teardown;
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}
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}
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@ -2726,6 +2734,10 @@ out_teardown:
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pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
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vfio_teardown_msi(vdev);
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vfio_bars_exit(vdev);
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error:
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if (err) {
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error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
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}
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return ret;
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}
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@ -30,6 +30,9 @@
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#include <linux/vfio.h>
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#endif
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#define ERR_PREFIX "vfio error: %s: "
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#define WARN_PREFIX "vfio warning: %s: "
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/*#define DEBUG_VFIO*/
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#ifdef DEBUG_VFIO
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#define DPRINTF(fmt, ...) \
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