mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-11-02 19:31:18 +00:00
9943276fd2
Return statements with parameter enclosed in parentheses were modified and parentheses were removed. The whole change was scripted, here is how: List of files was obtained using this command: git grep -l -e '\<return\s*([^()]*\(([^()]*)[^()]*\)*)\s*;' | \ grep -e '\.[ch]$' -e '\.py$' Found files were modified with this command: sed -i -e \ 's_^\(.*\<return\)\s*(\(\([^()]*([^()]*)[^()]*\)*\))\s*\(;.*$\)_\1 \2\4_' \ -e 's_^\(.*\<return\)\s*(\([^()]*\))\s*\(;.*$\)_\1 \2\3_' Then checked for nonsense. The whole command looks like this: git grep -l -e '\<return\s*([^()]*\(([^()]*)[^()]*\)*)\s*;' | \ grep -e '\.[ch]$' -e '\.py$' | xargs sed -i -e \ 's_^\(.*\<return\)\s*(\(\([^()]*([^()]*)[^()]*\)*\))\s*\(;.*$\)_\1 \2\4_' \ -e 's_^\(.*\<return\)\s*(\([^()]*\))\s*\(;.*$\)_\1 \2\3_'
1364 lines
34 KiB
C
1364 lines
34 KiB
C
/*
|
|
* datatypes.h: management of structs for public data types
|
|
*
|
|
* Copyright (C) 2006-2011 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <unistd.h>
|
|
|
|
#include "datatypes.h"
|
|
#include "virterror_internal.h"
|
|
#include "logging.h"
|
|
#include "memory.h"
|
|
#include "uuid.h"
|
|
#include "util.h"
|
|
|
|
#define VIR_FROM_THIS VIR_FROM_NONE
|
|
|
|
#define virLibConnError(code, ...) \
|
|
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
|
|
__FUNCTION__, __LINE__, __VA_ARGS__)
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Domain and Connections allocations *
|
|
* *
|
|
************************************************************************/
|
|
|
|
|
|
/**
|
|
* virGetConnect:
|
|
*
|
|
* Allocates a new hypervisor connection structure
|
|
*
|
|
* Returns a new pointer or NULL in case of error.
|
|
*/
|
|
virConnectPtr
|
|
virGetConnect(void) {
|
|
virConnectPtr ret;
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virReportOOMError();
|
|
goto failed;
|
|
}
|
|
if (virMutexInit(&ret->lock) < 0) {
|
|
VIR_FREE(ret);
|
|
goto failed;
|
|
}
|
|
|
|
ret->magic = VIR_CONNECT_MAGIC;
|
|
ret->driver = NULL;
|
|
ret->networkDriver = NULL;
|
|
ret->privateData = NULL;
|
|
ret->networkPrivateData = NULL;
|
|
ret->interfacePrivateData = NULL;
|
|
|
|
ret->refs = 1;
|
|
return ret;
|
|
|
|
failed:
|
|
if (ret != NULL) {
|
|
virMutexDestroy(&ret->lock);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* virReleaseConnect:
|
|
* @conn: the hypervisor connection to release
|
|
*
|
|
* Unconditionally release all memory associated with a connection.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The connection obj must not
|
|
* be used once this method returns.
|
|
*/
|
|
static void
|
|
virReleaseConnect(virConnectPtr conn) {
|
|
VIR_DEBUG("release connection %p", conn);
|
|
|
|
/* make sure to release the connection lock before we call the
|
|
* close callbacks, otherwise we will deadlock if an error
|
|
* is raised by any of the callbacks */
|
|
virMutexUnlock(&conn->lock);
|
|
|
|
if (conn->networkDriver)
|
|
conn->networkDriver->close(conn);
|
|
if (conn->interfaceDriver)
|
|
conn->interfaceDriver->close(conn);
|
|
if (conn->storageDriver)
|
|
conn->storageDriver->close(conn);
|
|
if (conn->deviceMonitor)
|
|
conn->deviceMonitor->close(conn);
|
|
if (conn->secretDriver)
|
|
conn->secretDriver->close(conn);
|
|
if (conn->nwfilterDriver)
|
|
conn->nwfilterDriver->close(conn);
|
|
if (conn->driver)
|
|
conn->driver->close(conn);
|
|
|
|
virMutexLock(&conn->lock);
|
|
|
|
virResetError(&conn->err);
|
|
|
|
virURIFree(conn->uri);
|
|
|
|
virMutexUnlock(&conn->lock);
|
|
virMutexDestroy(&conn->lock);
|
|
VIR_FREE(conn);
|
|
}
|
|
|
|
/**
|
|
* virUnrefConnect:
|
|
* @conn: the hypervisor connection to unreference
|
|
*
|
|
* Unreference the connection. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefConnect(virConnectPtr conn) {
|
|
int refs;
|
|
|
|
if ((!VIR_IS_CONNECT(conn))) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
refs = conn->refs;
|
|
if (refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
/**
|
|
* virGetDomain:
|
|
* @conn: the hypervisor connection
|
|
* @name: pointer to the domain name
|
|
* @uuid: pointer to the uuid
|
|
*
|
|
* Lookup if the domain is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefDomain() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the domain, or NULL in case of failure
|
|
*/
|
|
virDomainPtr
|
|
virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid) {
|
|
virDomainPtr ret = NULL;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
if (uuid == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing uuid"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
virUUIDFormat(uuid, uuidstr);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_DOMAIN_MAGIC;
|
|
ret->conn = conn;
|
|
ret->id = -1;
|
|
memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN);
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* virReleaseDomain:
|
|
* @domain: the domain to release
|
|
*
|
|
* Unconditionally release all memory associated with a domain.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The domain obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseDomain(virDomainPtr domain) {
|
|
virConnectPtr conn = domain->conn;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
virUUIDFormat(domain->uuid, uuidstr);
|
|
VIR_DEBUG("release domain %p %s %s", domain, domain->name, uuidstr);
|
|
|
|
domain->magic = -1;
|
|
domain->id = -1;
|
|
VIR_FREE(domain->name);
|
|
VIR_FREE(domain);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefDomain:
|
|
* @domain: the domain to unreference
|
|
*
|
|
* Unreference the domain. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefDomain(virDomainPtr domain) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("bad domain or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&domain->conn->lock);
|
|
VIR_DEBUG("unref domain %p %s %d", domain, domain->name, domain->refs);
|
|
domain->refs--;
|
|
refs = domain->refs;
|
|
if (refs == 0) {
|
|
virReleaseDomain(domain);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&domain->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
/**
|
|
* virGetNetwork:
|
|
* @conn: the hypervisor connection
|
|
* @name: pointer to the network name
|
|
* @uuid: pointer to the uuid
|
|
*
|
|
* Lookup if the network is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefNetwork() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the network, or NULL in case of failure
|
|
*/
|
|
virNetworkPtr
|
|
virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid) {
|
|
virNetworkPtr ret = NULL;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
if (uuid == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing uuid"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
virUUIDFormat(uuid, uuidstr);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_NETWORK_MAGIC;
|
|
ret->conn = conn;
|
|
memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN);
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* virReleaseNetwork:
|
|
* @network: the network to release
|
|
*
|
|
* Unconditionally release all memory associated with a network.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The network obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseNetwork(virNetworkPtr network) {
|
|
virConnectPtr conn = network->conn;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
virUUIDFormat(network->uuid, uuidstr);
|
|
VIR_DEBUG("release network %p %s %s", network, network->name, uuidstr);
|
|
|
|
network->magic = -1;
|
|
VIR_FREE(network->name);
|
|
VIR_FREE(network);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefNetwork:
|
|
* @network: the network to unreference
|
|
*
|
|
* Unreference the network. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefNetwork(virNetworkPtr network) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_NETWORK(network)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG,
|
|
_("bad network or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&network->conn->lock);
|
|
VIR_DEBUG("unref network %p %s %d", network, network->name, network->refs);
|
|
network->refs--;
|
|
refs = network->refs;
|
|
if (refs == 0) {
|
|
virReleaseNetwork(network);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&network->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetInterface:
|
|
* @conn: the hypervisor connection
|
|
* @name: pointer to the interface name
|
|
* @mac: pointer to the mac
|
|
*
|
|
* Lookup if the interface is already registered for that connection,
|
|
* if yes return a new pointer to it (possibly updating the MAC
|
|
* address), if no allocate a new structure, and register it in the
|
|
* table. In any case a corresponding call to virUnrefInterface() is
|
|
* needed to not leak data.
|
|
*
|
|
* Returns a pointer to the interface, or NULL in case of failure
|
|
*/
|
|
virInterfacePtr
|
|
virGetInterface(virConnectPtr conn, const char *name, const char *mac) {
|
|
virInterfacePtr ret = NULL;
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
|
|
/* a NULL mac from caller is okay. Treat it as blank */
|
|
if (mac == NULL)
|
|
mac = "";
|
|
|
|
virMutexLock(&conn->lock);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->mac = strdup(mac);
|
|
if (ret->mac == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
|
|
ret->magic = VIR_INTERFACE_MAGIC;
|
|
ret->conn = conn;
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret->mac);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* virReleaseInterface:
|
|
* @interface: the interface to release
|
|
*
|
|
* Unconditionally release all memory associated with an interface.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The interface obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseInterface(virInterfacePtr iface) {
|
|
virConnectPtr conn = iface->conn;
|
|
VIR_DEBUG("release interface %p %s", iface, iface->name);
|
|
|
|
iface->magic = -1;
|
|
VIR_FREE(iface->name);
|
|
VIR_FREE(iface->mac);
|
|
VIR_FREE(iface);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefInterface:
|
|
* @interface: the interface to unreference
|
|
*
|
|
* Unreference the interface. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefInterface(virInterfacePtr iface) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG,
|
|
_("bad interface or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&iface->conn->lock);
|
|
VIR_DEBUG("unref interface %p %s %d", iface, iface->name, iface->refs);
|
|
iface->refs--;
|
|
refs = iface->refs;
|
|
if (refs == 0) {
|
|
virReleaseInterface(iface);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&iface->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetStoragePool:
|
|
* @conn: the hypervisor connection
|
|
* @name: pointer to the storage pool name
|
|
* @uuid: pointer to the uuid
|
|
*
|
|
* Lookup if the storage pool is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefStoragePool() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the network, or NULL in case of failure
|
|
*/
|
|
virStoragePoolPtr
|
|
virGetStoragePool(virConnectPtr conn, const char *name,
|
|
const unsigned char *uuid) {
|
|
virStoragePoolPtr ret = NULL;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
if (uuid == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing uuid"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
virUUIDFormat(uuid, uuidstr);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_STORAGE_POOL_MAGIC;
|
|
ret->conn = conn;
|
|
memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN);
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* virReleaseStoragePool:
|
|
* @pool: the pool to release
|
|
*
|
|
* Unconditionally release all memory associated with a pool.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The pool obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseStoragePool(virStoragePoolPtr pool) {
|
|
virConnectPtr conn = pool->conn;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
virUUIDFormat(pool->uuid, uuidstr);
|
|
VIR_DEBUG("release pool %p %s %s", pool, pool->name, uuidstr);
|
|
|
|
pool->magic = -1;
|
|
VIR_FREE(pool->name);
|
|
VIR_FREE(pool);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefStoragePool:
|
|
* @pool: the pool to unreference
|
|
*
|
|
* Unreference the pool. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefStoragePool(virStoragePoolPtr pool) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG,
|
|
_("bad storage pool or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&pool->conn->lock);
|
|
VIR_DEBUG("unref pool %p %s %d", pool, pool->name, pool->refs);
|
|
pool->refs--;
|
|
refs = pool->refs;
|
|
if (refs == 0) {
|
|
virReleaseStoragePool(pool);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&pool->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetStorageVol:
|
|
* @conn: the hypervisor connection
|
|
* @pool: pool owning the volume
|
|
* @name: pointer to the storage vol name
|
|
* @key: pointer to unique key of the volume
|
|
*
|
|
* Lookup if the storage vol is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefStorageVol() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the storage vol, or NULL in case of failure
|
|
*/
|
|
virStorageVolPtr
|
|
virGetStorageVol(virConnectPtr conn, const char *pool, const char *name,
|
|
const char *key) {
|
|
virStorageVolPtr ret = NULL;
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
if (key == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing key"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->pool = strdup(pool);
|
|
if (ret->pool == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->key = strdup(key);
|
|
if (ret->key == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_STORAGE_VOL_MAGIC;
|
|
ret->conn = conn;
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->key);
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret->pool);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* virReleaseStorageVol:
|
|
* @vol: the vol to release
|
|
*
|
|
* Unconditionally release all memory associated with a vol.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The vol obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseStorageVol(virStorageVolPtr vol) {
|
|
virConnectPtr conn = vol->conn;
|
|
VIR_DEBUG("release vol %p %s", vol, vol->name);
|
|
|
|
vol->magic = -1;
|
|
VIR_FREE(vol->key);
|
|
VIR_FREE(vol->name);
|
|
VIR_FREE(vol->pool);
|
|
VIR_FREE(vol);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefStorageVol:
|
|
* @vol: the vol to unreference
|
|
*
|
|
* Unreference the vol. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefStorageVol(virStorageVolPtr vol) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_STORAGE_VOL(vol)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG,
|
|
_("bad storage volume or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&vol->conn->lock);
|
|
VIR_DEBUG("unref vol %p %s %d", vol, vol->name, vol->refs);
|
|
vol->refs--;
|
|
refs = vol->refs;
|
|
if (refs == 0) {
|
|
virReleaseStorageVol(vol);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&vol->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetNodeDevice:
|
|
* @conn: the hypervisor connection
|
|
* @name: device name (unique on node)
|
|
*
|
|
* Lookup if the device is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefNodeDevice() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the node device, or NULL in case of failure
|
|
*/
|
|
virNodeDevicePtr
|
|
virGetNodeDevice(virConnectPtr conn, const char *name)
|
|
{
|
|
virNodeDevicePtr ret = NULL;
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_NODE_DEVICE_MAGIC;
|
|
ret->conn = conn;
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* virReleaseNodeDevice:
|
|
* @dev: the dev to release
|
|
*
|
|
* Unconditionally release all memory associated with a dev.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The dev obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseNodeDevice(virNodeDevicePtr dev) {
|
|
virConnectPtr conn = dev->conn;
|
|
VIR_DEBUG("release dev %p %s", dev, dev->name);
|
|
|
|
dev->magic = -1;
|
|
VIR_FREE(dev->name);
|
|
VIR_FREE(dev->parent);
|
|
VIR_FREE(dev);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefNodeDevice:
|
|
* @dev: the dev to unreference
|
|
*
|
|
* Unreference the dev. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefNodeDevice(virNodeDevicePtr dev) {
|
|
int refs;
|
|
|
|
virMutexLock(&dev->conn->lock);
|
|
VIR_DEBUG("unref dev %p %s %d", dev, dev->name, dev->refs);
|
|
dev->refs--;
|
|
refs = dev->refs;
|
|
if (refs == 0) {
|
|
virReleaseNodeDevice(dev);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&dev->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetSecret:
|
|
* @conn: the hypervisor connection
|
|
* @uuid: secret UUID
|
|
*
|
|
* Lookup if the secret is already registered for that connection, if so return
|
|
* a pointer to it, otherwise allocate a new structure, and register it in the
|
|
* table. In any case a corresponding call to virUnrefSecret() is needed to not
|
|
* leak data.
|
|
*
|
|
* Returns a pointer to the secret, or NULL in case of failure
|
|
*/
|
|
virSecretPtr
|
|
virGetSecret(virConnectPtr conn, const unsigned char *uuid,
|
|
int usageType, const char *usageID)
|
|
{
|
|
virSecretPtr ret = NULL;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (uuid == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing uuid"));
|
|
return NULL;
|
|
}
|
|
if (usageID == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing usageID"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
virUUIDFormat(uuid, uuidstr);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_SECRET_MAGIC;
|
|
ret->conn = conn;
|
|
memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN);
|
|
ret->usageType = usageType;
|
|
if (!(ret->usageID = strdup(usageID))) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->usageID);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* virReleaseSecret:
|
|
* @secret: the secret to release
|
|
*
|
|
* Unconditionally release all memory associated with a secret. The conn.lock
|
|
* mutex must be held prior to calling this, and will be released prior to this
|
|
* returning. The secret obj must not be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object, which may also be
|
|
* released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseSecret(virSecretPtr secret) {
|
|
virConnectPtr conn = secret->conn;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
virUUIDFormat(secret->uuid, uuidstr);
|
|
VIR_DEBUG("release secret %p %s", secret, uuidstr);
|
|
|
|
VIR_FREE(secret->usageID);
|
|
secret->magic = -1;
|
|
VIR_FREE(secret);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* virUnrefSecret:
|
|
* @secret: the secret to unreference
|
|
*
|
|
* Unreference the secret. If the use count drops to zero, the structure is
|
|
* actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefSecret(virSecretPtr secret) {
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_SECRET(secret)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("bad secret or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&secret->conn->lock);
|
|
VIR_DEBUG("unref secret %p %p %d", secret, secret->uuid, secret->refs);
|
|
secret->refs--;
|
|
refs = secret->refs;
|
|
if (refs == 0) {
|
|
virReleaseSecret(secret);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&secret->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
virStreamPtr virGetStream(virConnectPtr conn) {
|
|
virStreamPtr ret = NULL;
|
|
|
|
virMutexLock(&conn->lock);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_STREAM_MAGIC;
|
|
ret->conn = conn;
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
virMutexUnlock(&conn->lock);
|
|
VIR_FREE(ret);
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
virReleaseStream(virStreamPtr st) {
|
|
virConnectPtr conn = st->conn;
|
|
VIR_DEBUG("release dev %p", st);
|
|
|
|
st->magic = -1;
|
|
VIR_FREE(st);
|
|
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
|
|
int virUnrefStream(virStreamPtr st) {
|
|
int refs;
|
|
|
|
virMutexLock(&st->conn->lock);
|
|
VIR_DEBUG("unref stream %p %d", st, st->refs);
|
|
st->refs--;
|
|
refs = st->refs;
|
|
if (refs == 0) {
|
|
virReleaseStream(st);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&st->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
/**
|
|
* virGetNWFilter:
|
|
* @conn: the hypervisor connection
|
|
* @name: pointer to the network filter pool name
|
|
* @uuid: pointer to the uuid
|
|
*
|
|
* Lookup if the network filter is already registered for that connection,
|
|
* if yes return a new pointer to it, if no allocate a new structure,
|
|
* and register it in the table. In any case a corresponding call to
|
|
* virUnrefNWFilter() is needed to not leak data.
|
|
*
|
|
* Returns a pointer to the network, or NULL in case of failure
|
|
*/
|
|
virNWFilterPtr
|
|
virGetNWFilter(virConnectPtr conn, const char *name, const unsigned char *uuid) {
|
|
virNWFilterPtr ret = NULL;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
if (!VIR_IS_CONNECT(conn)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("no connection"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
if (uuid == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing uuid"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&conn->lock);
|
|
|
|
virUUIDFormat(uuid, uuidstr);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_NWFILTER_MAGIC;
|
|
ret->conn = conn;
|
|
memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN);
|
|
|
|
conn->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* virReleaseNWFilter:
|
|
* @nwfilter: the nwfilter to release
|
|
*
|
|
* Unconditionally release all memory associated with a nwfilter.
|
|
* The conn.lock mutex must be held prior to calling this, and will
|
|
* be released prior to this returning. The nwfilter obj must not
|
|
* be used once this method returns.
|
|
*
|
|
* It will also unreference the associated connection object,
|
|
* which may also be released if its ref count hits zero.
|
|
*/
|
|
static void
|
|
virReleaseNWFilter(virNWFilterPtr nwfilter)
|
|
{
|
|
virConnectPtr conn = nwfilter->conn;
|
|
char uuidstr[VIR_UUID_STRING_BUFLEN];
|
|
|
|
virUUIDFormat(nwfilter->uuid, uuidstr);
|
|
VIR_DEBUG("release nwfilter %p %s %s", nwfilter, nwfilter->name, uuidstr);
|
|
|
|
nwfilter->magic = -1;
|
|
VIR_FREE(nwfilter->name);
|
|
VIR_FREE(nwfilter);
|
|
|
|
if (conn) {
|
|
VIR_DEBUG("unref connection %p %d", conn, conn->refs);
|
|
conn->refs--;
|
|
if (conn->refs == 0) {
|
|
virReleaseConnect(conn);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&conn->lock);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* virUnrefNWFilter:
|
|
* @nwfilter: the nwfilter to unreference
|
|
*
|
|
* Unreference the networkf itler. If the use count drops to zero, the
|
|
* structure is actually freed.
|
|
*
|
|
* Returns the reference count or -1 in case of failure.
|
|
*/
|
|
int
|
|
virUnrefNWFilter(virNWFilterPtr nwfilter)
|
|
{
|
|
int refs;
|
|
|
|
if (!VIR_IS_CONNECTED_NWFILTER(nwfilter)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG,
|
|
_("bad nwfilter or no connection"));
|
|
return -1;
|
|
}
|
|
virMutexLock(&nwfilter->conn->lock);
|
|
VIR_DEBUG("unref nwfilter %p %s %d", nwfilter, nwfilter->name,
|
|
nwfilter->refs);
|
|
nwfilter->refs--;
|
|
refs = nwfilter->refs;
|
|
if (refs == 0) {
|
|
virReleaseNWFilter(nwfilter);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&nwfilter->conn->lock);
|
|
return refs;
|
|
}
|
|
|
|
|
|
virDomainSnapshotPtr
|
|
virGetDomainSnapshot(virDomainPtr domain, const char *name)
|
|
{
|
|
virDomainSnapshotPtr ret = NULL;
|
|
|
|
if (!VIR_IS_DOMAIN(domain)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("bad domain"));
|
|
return NULL;
|
|
}
|
|
if (name == NULL) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("missing name"));
|
|
return NULL;
|
|
}
|
|
virMutexLock(&domain->conn->lock);
|
|
|
|
if (VIR_ALLOC(ret) < 0) {
|
|
virMutexUnlock(&domain->conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->name = strdup(name);
|
|
if (ret->name == NULL) {
|
|
virMutexUnlock(&domain->conn->lock);
|
|
virReportOOMError();
|
|
goto error;
|
|
}
|
|
ret->magic = VIR_SNAPSHOT_MAGIC;
|
|
ret->domain = domain;
|
|
|
|
domain->refs++;
|
|
ret->refs++;
|
|
virMutexUnlock(&domain->conn->lock);
|
|
return ret;
|
|
|
|
error:
|
|
if (ret != NULL) {
|
|
VIR_FREE(ret->name);
|
|
VIR_FREE(ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static void
|
|
virReleaseDomainSnapshot(virDomainSnapshotPtr snapshot)
|
|
{
|
|
virDomainPtr domain = snapshot->domain;
|
|
VIR_DEBUG("release snapshot %p %s", snapshot, snapshot->name);
|
|
|
|
snapshot->magic = -1;
|
|
VIR_FREE(snapshot->name);
|
|
VIR_FREE(snapshot);
|
|
|
|
if (domain) {
|
|
VIR_DEBUG("unref domain %p %d", domain, domain->refs);
|
|
domain->refs--;
|
|
if (domain->refs == 0) {
|
|
virReleaseDomain(domain);
|
|
/* Already unlocked mutex */
|
|
return;
|
|
}
|
|
virMutexUnlock(&domain->conn->lock);
|
|
}
|
|
}
|
|
|
|
int
|
|
virUnrefDomainSnapshot(virDomainSnapshotPtr snapshot)
|
|
{
|
|
int refs;
|
|
|
|
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
|
|
virLibConnError(VIR_ERR_INVALID_ARG, _("not a snapshot"));
|
|
return -1;
|
|
}
|
|
|
|
virMutexLock(&snapshot->domain->conn->lock);
|
|
VIR_DEBUG("unref snapshot %p %s %d", snapshot, snapshot->name, snapshot->refs);
|
|
snapshot->refs--;
|
|
refs = snapshot->refs;
|
|
if (refs == 0) {
|
|
virReleaseDomainSnapshot(snapshot);
|
|
/* Already unlocked mutex */
|
|
return 0;
|
|
}
|
|
|
|
virMutexUnlock(&snapshot->domain->conn->lock);
|
|
return refs;
|
|
}
|