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qemu_conf.c: introduce qemuAddRemoveSharedDiskInternal

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Following the same idea of avoid code repetition from the
previous patch, this commit introduces a new function that
aggregates the functions of qemuAddSharedDisk() and
qemuRemoveSharedDisk() into a single place, using a flag to
switch between add/remove operations.

Both qemuAddSharedDisk() and qemuRemoveSharedDisk() are
public, so keep them around to avoid changing other files
due to an internal qemu_conf.c refactory.

No functional change was made.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Daniel Henrique Barboza 2019-09-03 20:06:06 -03:00 committed by Pavel Hrdina
parent b2de989b9d
commit b80bb2d371
1 changed files with 68 additions and 74 deletions
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142
src/qemu/qemu_conf.c
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@ -1654,6 +1654,68 @@ qemuSharedDeviceEntryInsert(virQEMUDriverPtr driver,
}
static int
qemuSharedDeviceEntryRemove(virQEMUDriverPtr driver,
const char *key,
const char *name)
{
qemuSharedDeviceEntryPtr entry = NULL;
int idx;
if (!(entry = virHashLookup(driver->sharedDevices, key)))
return -1;
/* Nothing to do if the shared disk is not recored in the table. */
if (!qemuSharedDeviceEntryDomainExists(entry, name, &idx))
return 0;
if (entry->ref != 1)
VIR_DELETE_ELEMENT(entry->domains, idx, entry->ref);
else
ignore_value(virHashRemoveEntry(driver->sharedDevices, key));
return 0;
}
static int
qemuAddRemoveSharedDiskInternal(virQEMUDriverPtr driver,
virDomainDiskDefPtr disk,
const char *name,
bool addDisk)
{
char *key = NULL;
int ret = -1;
if (virStorageSourceIsEmpty(disk->src) ||
!disk->src->shared ||
!virStorageSourceIsBlockLocal(disk->src))
return 0;
qemuDriverLock(driver);
if (!(key = qemuGetSharedDeviceKey(virDomainDiskGetSource(disk))))
goto cleanup;
if (addDisk) {
if (qemuCheckSharedDisk(driver->sharedDevices, disk) < 0)
goto cleanup;
if (qemuSharedDeviceEntryInsert(driver, key, name) < 0)
goto cleanup;
} else {
if (qemuSharedDeviceEntryRemove(driver, key, name) < 0)
goto cleanup;
}
ret = 0;
cleanup:
qemuDriverUnlock(driver);
VIR_FREE(key);
return ret;
}
/* qemuAddSharedDisk:
* @driver: Pointer to qemu driver struct
* @src: disk source
@ -1668,31 +1730,7 @@ qemuAddSharedDisk(virQEMUDriverPtr driver,
virDomainDiskDefPtr disk,
const char *name)
{
char *key = NULL;
int ret = -1;
if (virStorageSourceIsEmpty(disk->src) ||
!disk->src->shared ||
!virStorageSourceIsBlockLocal(disk->src))
return 0;
qemuDriverLock(driver);
if (qemuCheckSharedDisk(driver->sharedDevices, disk) < 0)
goto cleanup;
if (!(key = qemuGetSharedDeviceKey(virDomainDiskGetSource(disk))))
goto cleanup;
if (qemuSharedDeviceEntryInsert(driver, key, name) < 0)
goto cleanup;
ret = 0;
cleanup:
qemuDriverUnlock(driver);
VIR_FREE(key);
return ret;
return qemuAddRemoveSharedDiskInternal(driver, disk, name, true);
}
@ -1729,30 +1767,6 @@ qemuGetHostdevPath(virDomainHostdevDefPtr hostdev)
}
static int
qemuSharedDeviceEntryRemove(virQEMUDriverPtr driver,
const char *key,
const char *name)
{
qemuSharedDeviceEntryPtr entry = NULL;
int idx;
if (!(entry = virHashLookup(driver->sharedDevices, key)))
return -1;
/* Nothing to do if the shared disk is not recored in the table. */
if (!qemuSharedDeviceEntryDomainExists(entry, name, &idx))
return 0;
if (entry->ref != 1)
VIR_DELETE_ELEMENT(entry->domains, idx, entry->ref);
else
ignore_value(virHashRemoveEntry(driver->sharedDevices, key));
return 0;
}
static int
qemuAddRemoveSharedHostdevInternal(virQEMUDriverPtr driver,
virDomainHostdevDefPtr hostdev,
@ -1808,7 +1822,8 @@ qemuAddSharedDevice(virQEMUDriverPtr driver,
* which is only valid for block disk and scsi host device.
*/
if (dev->type == VIR_DOMAIN_DEVICE_DISK)
return qemuAddSharedDisk(driver, dev->data.disk, name);
return qemuAddRemoveSharedDiskInternal(driver, dev->data.disk,
name, true);
else if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV)
return qemuAddRemoveSharedHostdevInternal(driver, dev->data.hostdev,
name, true);
@ -1822,32 +1837,10 @@ qemuRemoveSharedDisk(virQEMUDriverPtr driver,
virDomainDiskDefPtr disk,
const char *name)
{
char *key = NULL;
int ret = -1;
if (virStorageSourceIsEmpty(disk->src) ||
!disk->src->shared ||
!virStorageSourceIsBlockLocal(disk->src))
return 0;
qemuDriverLock(driver);
if (!(key = qemuGetSharedDeviceKey(virDomainDiskGetSource(disk))))
goto cleanup;
if (qemuSharedDeviceEntryRemove(driver, key, name) < 0)
goto cleanup;
ret = 0;
cleanup:
qemuDriverUnlock(driver);
VIR_FREE(key);
return ret;
return qemuAddRemoveSharedDiskInternal(driver, disk, name, false);
}
/* qemuRemoveSharedDevice:
* @driver: Pointer to qemu driver struct
* @device: The device def
@ -1863,7 +1856,8 @@ qemuRemoveSharedDevice(virQEMUDriverPtr driver,
const char *name)
{
if (dev->type == VIR_DOMAIN_DEVICE_DISK)
return qemuRemoveSharedDisk(driver, dev->data.disk, name);
return qemuAddRemoveSharedDiskInternal(driver, dev->data.disk,
name, false);
else if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV)
return qemuAddRemoveSharedHostdevInternal(driver, dev->data.hostdev,
name, false);