[libvirt] [PATCH 1/2] qemu: Add ability to set sgio values for hostdev
Add necessary checks in order to allow setting sgio values for a scsi
host device.
Signed-off-by: John Ferlan <jferlan(a)redhat.com>
---
src/qemu/qemu_conf.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index a4f545ef92..3d28c03fa1 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -1633,13 +1633,15 @@ qemuSetUnprivSGIO(virDomainDeviceDefPtr dev)
virDomainDiskDefPtr disk = NULL;
virDomainHostdevDefPtr hostdev = NULL;
char *sysfs_path = NULL;
+ char *hostdev_path = NULL;
const char *path = NULL;
int val = -1;
int ret = -1;
/* "sgio" is only valid for block disk; cdrom
* and floopy disk can have empty source.
- */
+ * NB: The default is to filter SG_IO commands
+ * (i.e. set unpriv_sgio to 0). */
if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
disk = dev->data.disk;
@@ -1648,20 +1650,19 @@ qemuSetUnprivSGIO(virDomainDeviceDefPtr dev)
return 0;
path = virDomainDiskGetSource(disk);
+ val = (disk->sgio == VIR_DOMAIN_DEVICE_SGIO_UNFILTERED);
} else if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) {
hostdev = dev->data.hostdev;
if (!qemuIsSharedHostdev(hostdev))
return 0;
- if (hostdev->source.subsys.u.scsi.sgio) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("'sgio' is not supported for SCSI "
- "generic device yet "));
+ if (!(hostdev_path = qemuGetHostdevPath(hostdev)))
goto cleanup;
- }
- return 0;
+ path = hostdev_path;
+ val = (hostdev->source.subsys.u.scsi.sgio ==
+ VIR_DOMAIN_DEVICE_SGIO_UNFILTERED);
} else {
return 0;
}
@@ -1669,9 +1670,6 @@ qemuSetUnprivSGIO(virDomainDeviceDefPtr dev)
if (!(sysfs_path = virGetUnprivSGIOSysfsPath(path, NULL)))
goto cleanup;
- /* By default, filter the SG_IO commands, i.e. set unpriv_sgio to 0. */
- val = (disk->sgio == VIR_DOMAIN_DEVICE_SGIO_UNFILTERED);
-
/* Do not do anything if unpriv_sgio is not supported by the kernel and the
* whitelist is enabled. But if requesting unfiltered access, always call
* virSetDeviceUnprivSGIO, to report an error for unsupported unpriv_sgio.
@@ -1683,6 +1681,7 @@ qemuSetUnprivSGIO(virDomainDeviceDefPtr dev)
ret = 0;
cleanup:
+ VIR_FREE(hostdev_path);
VIR_FREE(sysfs_path);
return ret;
}
--
2.17.1