Split out the SGIO check for sharing with hostdev in future patches
Signed-off-by: John Ferlan <jfer...@redhat.com>
---
src/qemu/qemu_conf.c | 88 ++++++++++++++++++++++++++++++++++------------------
1 file changed, 57 insertions(+), 31 deletions(-)
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index f82244f..eb0b34f 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -1018,26 +1018,21 @@ qemuGetSharedDeviceKey(const char *device_path)
return key;
}
-/* Check if a shared device's setting conflicts with the conf
- * used by other domain(s). Currently only checks the sgio
- * setting. Note that this should only be called for disk with
- * block source if the device type is disk.
- *
- * Returns 0 if no conflicts, otherwise returns -1.
+/*
+ * Make necessary checks for the need to check and for the current setting
+ * of the 'unpriv_sgio' value for the device_path passed.
*/
static int
-qemuCheckSharedDisk(virHashTablePtr sharedDevices,
- virDomainDiskDefPtr disk)
+virCheckUnprivSGIO(virHashTablePtr sharedDevices,
+ const char *device_path,
+ int sgio)
{
char *sysfs_path = NULL;
char *key = NULL;
int val;
int ret = -1;
- if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN)
- return 0;
-
- if (!(sysfs_path = virGetUnprivSGIOSysfsPath(disk->src->path, NULL)))
+ if (!(sysfs_path = virGetUnprivSGIOSysfsPath(device_path, NULL)))
goto cleanup;
/* It can't be conflict if unpriv_sgio is not supported by kernel. */
@@ -1046,7 +1041,7 @@ qemuCheckSharedDisk(virHashTablePtr sharedDevices,
goto cleanup;
}
- if (!(key = qemuGetSharedDeviceKey(disk->src->path)))
+ if (!(key = qemuGetSharedDeviceKey(device_path)))
goto cleanup;
/* It can't be conflict if no other domain is sharing it. */
@@ -1055,29 +1050,19 @@ qemuCheckSharedDisk(virHashTablePtr sharedDevices,
goto cleanup;
}
- if (virGetDeviceUnprivSGIO(disk->src->path, NULL, &val) < 0)
+ if (virGetDeviceUnprivSGIO(device_path, NULL, &val) < 0)
goto cleanup;
+ /* Error message on failure needs to be handled in caller
+ * since there is more specific knowledge of device
+ */
+ virResetLastError();
if (!((val == 0 &&
- (disk->sgio == VIR_DOMAIN_DEVICE_SGIO_FILTERED ||
- disk->sgio == VIR_DOMAIN_DEVICE_SGIO_DEFAULT)) ||
+ (sgio == VIR_DOMAIN_DEVICE_SGIO_FILTERED ||
+ sgio == VIR_DOMAIN_DEVICE_SGIO_DEFAULT)) ||
(val == 1 &&
- disk->sgio == VIR_DOMAIN_DEVICE_SGIO_UNFILTERED))) {
-
- if (virDomainDiskGetType(disk) == VIR_STORAGE_TYPE_VOLUME) {
- virReportError(VIR_ERR_OPERATION_INVALID,
- _("sgio of shared disk 'pool=%s' 'volume=%s'
conflicts "
- "with other active domains"),
- disk->src->srcpool->pool,
- disk->src->srcpool->volume);
- } else {
- virReportError(VIR_ERR_OPERATION_INVALID,
- _("sgio of shared disk '%s' conflicts with other "
- "active domains"), disk->src->path);
- }
-
+ sgio == VIR_DOMAIN_DEVICE_SGIO_UNFILTERED)))
goto cleanup;
- }
ret = 0;
@@ -1088,6 +1073,47 @@ qemuCheckSharedDisk(virHashTablePtr sharedDevices,
}
+/* Check if a shared device's setting conflicts with the conf
+ * used by other domain(s). Currently only checks the sgio
+ * setting. Note that this should only be called for disk with
+ * block source if the device type is disk.
+ *
+ * Returns 0 if no conflicts, otherwise returns -1.
+ */
+static int
+qemuCheckSharedDisk(virHashTablePtr sharedDevices,
+ virDomainDiskDefPtr disk)
+{
+ int ret = -1;
+
+ if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN)
+ return 0;
+
+ if (virCheckUnprivSGIO(sharedDevices, disk->src->path, disk->sgio) < 0) {
+ if (virGetLastError() == NULL) {
+ if (virDomainDiskGetType(disk) == VIR_STORAGE_TYPE_VOLUME) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ _("sgio of shared disk 'pool=%s' 'volume=%s' "
+ "conflicts with other active domains"),
+ disk->src->srcpool->pool,
+ disk->src->srcpool->volume);
+ } else {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ _("sgio of shared disk '%s' conflicts with "
+ "other active domains"),
+ disk->src->path);
+ }
+ }
+ goto cleanup;
+ }
+
+ ret = 0;
+
+ cleanup:
+ return ret;
+}
+
+
bool
qemuSharedDeviceEntryDomainExists(qemuSharedDeviceEntryPtr entry,
const char *name,
--
2.1.0
--
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