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        <th width="100%" align="center">libvirt Reference Manual</th>
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    <h2>
      <span class="refentrytitle">libvirt</span>
    </h2>
    <p>libvirt - core interfaces for the libvirt library</p>
    <p>Provides the interfaces of the libvirt library to handle Xen domains from a process running in domain 0 </p>
    <p>Author(s): Daniel Veillard &lt;veillard@redhat.com&gt; </p>
    <div class="refsynopsisdiv">
      <h2>Synopsis</h2>
      <pre class="synopsis">#define <a href="#VIR_NODEINFO_MAXCPUS">VIR_NODEINFO_MAXCPUS</a>(nodeinfo);
#define <a href="#LIBVIR_VERSION_NUMBER">LIBVIR_VERSION_NUMBER</a>;
#define <a href="#VIR_USE_CPU">VIR_USE_CPU</a>(cpumap, cpu);
#define <a href="#VIR_CPU_MAPLEN">VIR_CPU_MAPLEN</a>(cpu);
#define <a href="#VIR_UUID_BUFLEN">VIR_UUID_BUFLEN</a>;
#define <a href="#VIR_CPU_USABLE">VIR_CPU_USABLE</a>(cpumaps, maplen, vcpu, cpu);
#define <a href="#VIR_COPY_CPUMAP">VIR_COPY_CPUMAP</a>(cpumaps, maplen, vcpu, cpumap);
#define <a href="#VIR_DOMAIN_SCHED_FIELD_LENGTH">VIR_DOMAIN_SCHED_FIELD_LENGTH</a>;
#define <a href="#VIR_UUID_STRING_BUFLEN">VIR_UUID_STRING_BUFLEN</a>;
#define <a href="#VIR_GET_CPUMAP">VIR_GET_CPUMAP</a>(cpumaps, maplen, vcpu);
#define <a href="#VIR_UNUSE_CPU">VIR_UNUSE_CPU</a>(cpumap, cpu);
typedef enum <a href="#virDomainMigrateFlags">virDomainMigrateFlags</a>;
typedef struct _virNodeInfo <a href="#virNodeInfo">virNodeInfo</a>;
typedef struct _virNetwork <a href="#virNetwork">virNetwork</a>;
typedef struct _virDomainBlockStats * <a href="#virDomainBlockStatsPtr">virDomainBlockStatsPtr</a>;
typedef struct _virConnect <a href="#virConnect">virConnect</a>;
typedef struct _virVcpuInfo <a href="#virVcpuInfo">virVcpuInfo</a>;
typedef struct _virDomainInfo <a href="#virDomainInfo">virDomainInfo</a>;
typedef struct _virSchedParameter <a href="#virSchedParameter">virSchedParameter</a>;
typedef enum <a href="#virDomainState">virDomainState</a>;
typedef struct _virDomain <a href="#virDomain">virDomain</a>;
typedef struct _virDomainInterfaceStats * <a href="#virDomainInterfaceStatsPtr">virDomainInterfaceStatsPtr</a>;
typedef enum <a href="#virSchedParameterType">virSchedParameterType</a>;
typedef enum <a href="#virDomainRestart">virDomainRestart</a>;
typedef <a href="libvirt-libvirt.html#virNodeInfo">virNodeInfo</a> * <a href="#virNodeInfoPtr">virNodeInfoPtr</a>;
typedef <a href="libvirt-libvirt.html#virNetwork">virNetwork</a> * <a href="#virNetworkPtr">virNetworkPtr</a>;
typedef <a href="libvirt-libvirt.html#virDomainInfo">virDomainInfo</a> * <a href="#virDomainInfoPtr">virDomainInfoPtr</a>;
typedef <a href="libvirt-libvirt.html#virConnect">virConnect</a> * <a href="#virConnectPtr">virConnectPtr</a>;
typedef <a href="libvirt-libvirt.html#virVcpuInfo">virVcpuInfo</a> * <a href="#virVcpuInfoPtr">virVcpuInfoPtr</a>;
typedef <a href="libvirt-libvirt.html#virSchedParameter">virSchedParameter</a> * <a href="#virSchedParameterPtr">virSchedParameterPtr</a>;
typedef enum <a href="#virVcpuState">virVcpuState</a>;
typedef <a href="libvirt-libvirt.html#virDomain">virDomain</a> * <a href="#virDomainPtr">virDomainPtr</a>;
typedef enum <a href="#virDomainCreateFlags">virDomainCreateFlags</a>;
int	<a href="#virDomainGetInfo">virDomainGetInfo</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virDomainInfoPtr">virDomainInfoPtr</a> info);
int	<a href="#virNetworkFree">virNetworkFree</a>			(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
const char *	<a href="#virNetworkGetName">virNetworkGetName</a>	(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
const char *	<a href="#virDomainGetName">virDomainGetName</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virNetworkGetAutostart">virNetworkGetAutostart</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int * autostart);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainDefineXML">virDomainDefineXML</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xml);
int	<a href="#virDomainShutdown">virDomainShutdown</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virNetworkUndefine">virNetworkUndefine</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
int	<a href="#virGetVersion">virGetVersion</a>			(unsigned long * libVer, <br/>					 const char * type, <br/>					 unsigned long * typeVer);
int	<a href="#virConnectListDefinedDomains">virConnectListDefinedDomains</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames);
char *	<a href="#virConnectGetCapabilities">virConnectGetCapabilities</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virInitialize">virInitialize</a>			(void);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainLookupByName">virDomainLookupByName</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * name);
<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	<a href="#virNetworkLookupByUUID">virNetworkLookupByUUID</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const unsigned char * uuid);
char *	<a href="#virNetworkGetBridgeName">virNetworkGetBridgeName</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
char *	<a href="#virNetworkGetXMLDesc">virNetworkGetXMLDesc</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int flags);
int	<a href="#virDomainPinVcpu">virDomainPinVcpu</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int vcpu, <br/>					 unsigned char * cpumap, <br/>					 int maplen);
int	<a href="#virDomainRestore">virDomainRestore</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * from);
const char *	<a href="#virConnectGetType">virConnectGetType</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	<a href="#virNetworkLookupByName">virNetworkLookupByName</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * name);
int	<a href="#virDomainGetSchedulerParameters">virDomainGetSchedulerParameters</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> params, <br/>					 int * nparams);
int	<a href="#virDomainCreate">virDomainCreate</a>			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virConnectListDomains">virConnectListDomains</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 int * ids, <br/>					 int maxids);
<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	<a href="#virNetworkLookupByUUIDString">virNetworkLookupByUUIDString</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>						 const char * uuidstr);
int	<a href="#virDomainCoreDump">virDomainCoreDump</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 const char * to, <br/>					 int flags);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainLookupByUUID">virDomainLookupByUUID</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const unsigned char * uuid);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainLookupByUUIDString">virDomainLookupByUUIDString</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>						 const char * uuidstr);
int	<a href="#virConnectNumOfDefinedNetworks">virConnectNumOfDefinedNetworks</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virDomainUndefine">virDomainUndefine</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
char *	<a href="#virDomainGetOSType">virDomainGetOSType</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virConnectListDefinedNetworks">virConnectListDefinedNetworks</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames);
int	<a href="#virNodeGetInfo">virNodeGetInfo</a>			(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 <a href="libvirt-libvirt.html#virNodeInfoPtr">virNodeInfoPtr</a> info);
int	<a href="#virDomainGetUUID">virDomainGetUUID</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned char * uuid);
int	<a href="#virDomainSetMemory">virDomainSetMemory</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned long memory);
int	<a href="#virNetworkSetAutostart">virNetworkSetAutostart</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int autostart);
int	<a href="#virConnectNumOfDomains">virConnectNumOfDomains</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virDomainGetUUIDString">virDomainGetUUIDString</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * buf);
<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	<a href="#virDomainGetConnect">virDomainGetConnect</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom);
unsigned long	<a href="#virDomainGetMaxMemory">virDomainGetMaxMemory</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virDomainAttachDevice">virDomainAttachDevice</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * xml);
int	<a href="#virDomainGetMaxVcpus">virDomainGetMaxVcpus</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virDomainFree">virDomainFree</a>			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	<a href="#virConnectOpen">virConnectOpen</a>		(const char * name);
int	<a href="#virDomainSetAutostart">virDomainSetAutostart</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int autostart);
int	<a href="#virDomainSuspend">virDomainSuspend</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virConnectGetMaxVcpus">virConnectGetMaxVcpus</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * type);
int	<a href="#virConnectNumOfDefinedDomains">virConnectNumOfDefinedDomains</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	<a href="#virNetworkGetConnect">virNetworkGetConnect</a>	(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> net);
<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	<a href="#virNetworkDefineXML">virNetworkDefineXML</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xml);
int	<a href="#virNetworkCreate">virNetworkCreate</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
int	<a href="#virDomainSetSchedulerParameters">virDomainSetSchedulerParameters</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> params, <br/>					 int nparams);
int	<a href="#virConnectClose">virConnectClose</a>			(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virDomainReboot">virDomainReboot</a>			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int flags);
int	<a href="#virDomainBlockStats">virDomainBlockStats</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom, <br/>					 const char * path, <br/>					 <a href="libvirt-libvirt.html#virDomainBlockStatsPtr">virDomainBlockStatsPtr</a> stats, <br/>					 size_t size);
int	<a href="#virDomainSetVcpus">virDomainSetVcpus</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int nvcpus);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainLookupByID">virDomainLookupByID</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 int id);
int	<a href="#virNetworkGetUUIDString">virNetworkGetUUIDString</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 char * buf);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainMigrate">virDomainMigrate</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> dconn, <br/>					 unsigned long flags, <br/>					 const char * dname, <br/>					 const char * uri, <br/>					 unsigned long bandwidth);
<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	<a href="#virNetworkCreateXML">virNetworkCreateXML</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xmlDesc);
unsigned int	<a href="#virDomainGetID">virDomainGetID</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virDomainResume">virDomainResume</a>			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	<a href="#virDomainCreateLinux">virDomainCreateLinux</a>	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xmlDesc, <br/>					 unsigned int flags);
char *	<a href="#virDomainGetSchedulerType">virDomainGetSchedulerType</a>	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int * nparams);
int	<a href="#virNetworkDestroy">virNetworkDestroy</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network);
int	<a href="#virDomainDestroy">virDomainDestroy</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain);
int	<a href="#virConnectNumOfNetworks">virConnectNumOfNetworks</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virDomainDetachDevice">virDomainDetachDevice</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * xml);
int	<a href="#virDomainGetAutostart">virDomainGetAutostart</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int * autostart);
int	<a href="#virDomainGetVcpus">virDomainGetVcpus</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virVcpuInfoPtr">virVcpuInfoPtr</a> info, <br/>					 int maxinfo, <br/>					 unsigned char * cpumaps, <br/>					 int maplen);
int	<a href="#virNetworkGetUUID">virNetworkGetUUID</a>		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 unsigned char * uuid);
char *	<a href="#virConnectGetHostname">virConnectGetHostname</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
char *	<a href="#virDomainGetXMLDesc">virDomainGetXMLDesc</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int flags);
int	<a href="#virDomainSetMaxMemory">virDomainSetMaxMemory</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned long memory);
int	<a href="#virDomainInterfaceStats">virDomainInterfaceStats</a>		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom, <br/>					 const char * path, <br/>					 <a href="libvirt-libvirt.html#virDomainInterfaceStatsPtr">virDomainInterfaceStatsPtr</a> stats, <br/>					 size_t size);
int	<a href="#virConnectGetVersion">virConnectGetVersion</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 unsigned long * hvVer);
int	<a href="#virConnectListNetworks">virConnectListNetworks</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames);
char *	<a href="#virConnectGetURI">virConnectGetURI</a>		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn);
int	<a href="#virDomainSave">virDomainSave</a>			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 const char * to);
<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	<a href="#virConnectOpenReadOnly">virConnectOpenReadOnly</a>	(const char * name);
</pre>
    </div>
    <div class="refsect1" lang="en">
      <h2>Description</h2>
    </div>
    <div class="refsect1" lang="en">
      <h2>Details</h2>
      <div class="refsect2" lang="en">
        <div class="refsect2" lang="en"><h3><a name="LIBVIR_VERSION_NUMBER">Macro </a>LIBVIR_VERSION_NUMBER</h3><pre class="programlisting">#define <a href="#LIBVIR_VERSION_NUMBER">LIBVIR_VERSION_NUMBER</a>;
</pre><p>Macro providing the version of the library as version * 1,000,000 + minor * 1000 + micro</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_COPY_CPUMAP">Macro </a>VIR_COPY_CPUMAP</h3><pre class="programlisting">#define <a href="#VIR_COPY_CPUMAP">VIR_COPY_CPUMAP</a>(cpumaps, maplen, vcpu, cpumap);
</pre><p>This macro is to be used in conjonction with virDomainGetVcpus() and virDomainPinVcpu() APIs. <a href="libvirt-libvirt.html#VIR_COPY_CPUMAP">VIR_COPY_CPUMAP</a> macro extract the cpumap of the specified vcpu from cpumaps array and copy it into cpumap to be used later by virDomainPinVcpu() API.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpumaps</tt></i>:</span></td><td>pointer to an array of cpumap (in 8-bit bytes) (IN)</td></tr><tr><td><span class="term"><i><tt>maplen</tt></i>:</span></td><td>the length (in bytes) of one cpumap</td></tr><tr><td><span class="term"><i><tt>vcpu</tt></i>:</span></td><td>the virtual CPU number</td></tr><tr><td><span class="term"><i><tt>cpumap</tt></i>:</span></td><td>pointer to a cpumap (in 8-bit bytes) (OUT) This cpumap must be previously allocated by the caller (ie: malloc(maplen))</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_CPU_MAPLEN">Macro </a>VIR_CPU_MAPLEN</h3><pre class="programlisting">#define <a href="#VIR_CPU_MAPLEN">VIR_CPU_MAPLEN</a>(cpu);
</pre><p>This macro is to be used in conjonction with virDomainPinVcpu() API. It returns the length (in bytes) required to store the complete CPU map between a single virtual &amp; all physical CPUs of a domain.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpu</tt></i>:</span></td><td>number of physical CPUs</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_CPU_USABLE">Macro </a>VIR_CPU_USABLE</h3><pre class="programlisting">#define <a href="#VIR_CPU_USABLE">VIR_CPU_USABLE</a>(cpumaps, maplen, vcpu, cpu);
</pre><p>This macro is to be used in conjonction with virDomainGetVcpus() API. <a href="libvirt-libvirt.html#VIR_CPU_USABLE">VIR_CPU_USABLE</a> macro returns a non zero value (true) if the cpu is usable by the vcpu, and 0 otherwise.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpumaps</tt></i>:</span></td><td>pointer to an array of cpumap (in 8-bit bytes) (IN)</td></tr><tr><td><span class="term"><i><tt>maplen</tt></i>:</span></td><td>the length (in bytes) of one cpumap</td></tr><tr><td><span class="term"><i><tt>vcpu</tt></i>:</span></td><td>the virtual CPU number</td></tr><tr><td><span class="term"><i><tt>cpu</tt></i>:</span></td><td>the physical CPU number</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_DOMAIN_SCHED_FIELD_LENGTH">Macro </a>VIR_DOMAIN_SCHED_FIELD_LENGTH</h3><pre class="programlisting">#define <a href="#VIR_DOMAIN_SCHED_FIELD_LENGTH">VIR_DOMAIN_SCHED_FIELD_LENGTH</a>;
</pre><p>Macro providing the field length of <a href="libvirt-libvirt.html#virSchedParameter">virSchedParameter</a></p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_GET_CPUMAP">Macro </a>VIR_GET_CPUMAP</h3><pre class="programlisting">#define <a href="#VIR_GET_CPUMAP">VIR_GET_CPUMAP</a>(cpumaps, maplen, vcpu);
</pre><p>This macro is to be used in conjonction with virDomainGetVcpus() and virDomainPinVcpu() APIs. <a href="libvirt-libvirt.html#VIR_GET_CPUMAP">VIR_GET_CPUMAP</a> macro returns a pointer to the cpumap of the specified vcpu from cpumaps array.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpumaps</tt></i>:</span></td><td>pointer to an array of cpumap (in 8-bit bytes) (IN)</td></tr><tr><td><span class="term"><i><tt>maplen</tt></i>:</span></td><td>the length (in bytes) of one cpumap</td></tr><tr><td><span class="term"><i><tt>vcpu</tt></i>:</span></td><td>the virtual CPU number</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_NODEINFO_MAXCPUS">Macro </a>VIR_NODEINFO_MAXCPUS</h3><pre class="programlisting">#define <a href="#VIR_NODEINFO_MAXCPUS">VIR_NODEINFO_MAXCPUS</a>(nodeinfo);
</pre><p>This macro is to calculate the total number of CPUs supported but not neccessarily active in the host.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>nodeinfo</tt></i>:</span></td><td><a href="libvirt-libvirt.html#virNodeInfo">virNodeInfo</a> instance</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_UNUSE_CPU">Macro </a>VIR_UNUSE_CPU</h3><pre class="programlisting">#define <a href="#VIR_UNUSE_CPU">VIR_UNUSE_CPU</a>(cpumap, cpu);
</pre><p>This macro is to be used in conjonction with virDomainPinVcpu() API. USE_CPU macro reset the bit (CPU not usable) of the related cpu in cpumap.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpumap</tt></i>:</span></td><td>pointer to a bit map of real CPUs (in 8-bit bytes) (IN/OUT)</td></tr><tr><td><span class="term"><i><tt>cpu</tt></i>:</span></td><td>the physical CPU number</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_USE_CPU">Macro </a>VIR_USE_CPU</h3><pre class="programlisting">#define <a href="#VIR_USE_CPU">VIR_USE_CPU</a>(cpumap, cpu);
</pre><p>This macro is to be used in conjonction with virDomainPinVcpu() API. USE_CPU macro set the bit (CPU usable) of the related cpu in cpumap.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>cpumap</tt></i>:</span></td><td>pointer to a bit map of real CPUs (in 8-bit bytes) (IN/OUT)</td></tr><tr><td><span class="term"><i><tt>cpu</tt></i>:</span></td><td>the physical CPU number</td></tr></tbody></table></div>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_UUID_BUFLEN">Macro </a>VIR_UUID_BUFLEN</h3><pre class="programlisting">#define <a href="#VIR_UUID_BUFLEN">VIR_UUID_BUFLEN</a>;
</pre><p>This macro provides the length of the buffer required for virDomainGetUUID()</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="VIR_UUID_STRING_BUFLEN">Macro </a>VIR_UUID_STRING_BUFLEN</h3><pre class="programlisting">#define <a href="#VIR_UUID_STRING_BUFLEN">VIR_UUID_STRING_BUFLEN</a>;
</pre><p>This macro provides the length of the buffer required for virDomainGetUUIDString()</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnect">Structure </a>virConnect</h3><pre class="programlisting">struct _virConnect {
The content of this structure is not made public by the API.
} virConnect;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectPtr">Typedef </a>virConnectPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virConnect">virConnect</a> * virConnectPtr;
</pre><p>a <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> is pointer to a <a href="libvirt-libvirt.html#virConnect">virConnect</a> private structure, this is the type used to reference a connection to the Xen Hypervisor in the API.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomain">Structure </a>virDomain</h3><pre class="programlisting">struct _virDomain {
The content of this structure is not made public by the API.
} virDomain;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainBlockStatsPtr">Structure </a>virDomainBlockStatsPtr</h3><pre class="programlisting">struct _virDomainBlockStats * {
The content of this structure is not made public by the API.
} virDomainBlockStatsPtr;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainCreateFlags">Enum </a>virDomainCreateFlags</h3><pre class="programlisting">enum <a href="#virDomainCreateFlags">virDomainCreateFlags</a> {
    <a name="VIR_DOMAIN_NONE">VIR_DOMAIN_NONE</a> = 0
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainInfo">Structure </a>virDomainInfo</h3><pre class="programlisting">struct _virDomainInfo {
    unsigned char	state	: the running state, one of virDomainFlags
    unsigned long	maxMem	: the maximum memory in KBytes allowed
    unsigned long	memory	: the memory in KBytes used by the domain
    unsigned short	nrVirtCpu	: the number of virtual CPUs for the domain
    unsigned long long	cpuTime	: the CPU time used in nanoseconds
} virDomainInfo;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainInfoPtr">Typedef </a>virDomainInfoPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainInfo">virDomainInfo</a> * virDomainInfoPtr;
</pre><p>a <a href="libvirt-libvirt.html#virDomainInfoPtr">virDomainInfoPtr</a> is a pointer to a <a href="libvirt-libvirt.html#virDomainInfo">virDomainInfo</a> structure.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainInterfaceStatsPtr">Structure </a>virDomainInterfaceStatsPtr</h3><pre class="programlisting">struct _virDomainInterfaceStats * {
The content of this structure is not made public by the API.
} virDomainInterfaceStatsPtr;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainMigrateFlags">Enum </a>virDomainMigrateFlags</h3><pre class="programlisting">enum <a href="#virDomainMigrateFlags">virDomainMigrateFlags</a> {
    <a name="VIR_MIGRATE_LIVE">VIR_MIGRATE_LIVE</a> = 1 /*  live migration */
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainPtr">Typedef </a>virDomainPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomain">virDomain</a> * virDomainPtr;
</pre><p>a <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> is pointer to a <a href="libvirt-libvirt.html#virDomain">virDomain</a> private structure, this is the type used to reference a Xen domain in the API.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainRestart">Enum </a>virDomainRestart</h3><pre class="programlisting">enum <a href="#virDomainRestart">virDomainRestart</a> {
    <a name="VIR_DOMAIN_DESTROY">VIR_DOMAIN_DESTROY</a> = 1 /* destroy the domain */
    <a name="VIR_DOMAIN_RESTART">VIR_DOMAIN_RESTART</a> = 2 /* restart the domain */
    <a name="VIR_DOMAIN_PRESERVE">VIR_DOMAIN_PRESERVE</a> = 3 /* keep as is, need manual destroy, for debug */
    <a name="VIR_DOMAIN_RENAME_RESTART">VIR_DOMAIN_RENAME_RESTART</a> = 4 /*  restart under an new unique name */
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainState">Enum </a>virDomainState</h3><pre class="programlisting">enum <a href="#virDomainState">virDomainState</a> {
    <a name="VIR_DOMAIN_NOSTATE">VIR_DOMAIN_NOSTATE</a> = 0 /* no state */
    <a name="VIR_DOMAIN_RUNNING">VIR_DOMAIN_RUNNING</a> = 1 /* the domain is running */
    <a name="VIR_DOMAIN_BLOCKED">VIR_DOMAIN_BLOCKED</a> = 2 /* the domain is blocked on resource */
    <a name="VIR_DOMAIN_PAUSED">VIR_DOMAIN_PAUSED</a> = 3 /* the domain is paused by user */
    <a name="VIR_DOMAIN_SHUTDOWN">VIR_DOMAIN_SHUTDOWN</a> = 4 /* the domain is being shut down */
    <a name="VIR_DOMAIN_SHUTOFF">VIR_DOMAIN_SHUTOFF</a> = 5 /* the domain is shut off */
    <a name="VIR_DOMAIN_CRASHED">VIR_DOMAIN_CRASHED</a> = 6 /*  the domain is crashed */
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetwork">Structure </a>virNetwork</h3><pre class="programlisting">struct _virNetwork {
The content of this structure is not made public by the API.
} virNetwork;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkPtr">Typedef </a>virNetworkPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetwork">virNetwork</a> * virNetworkPtr;
</pre><p>a <a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> is pointer to a <a href="libvirt-libvirt.html#virNetwork">virNetwork</a> private structure, this is the type used to reference a virtual network in the API.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNodeInfo">Structure </a>virNodeInfo</h3><pre class="programlisting">struct _virNodeInfo {
    charmodel[32]	model	: string indicating the CPU model
    unsigned long	memory	: memory size in kilobytes
    unsigned int	cpus	: the number of active CPUs
    unsigned int	mhz	: expected CPU frequency
    unsigned int	nodes	: the number of NUMA cell, 1 for uniform mem access
    unsigned int	sockets	: number of CPU socket per node
    unsigned int	cores	: number of core per socket
    unsigned int	threads	: number of threads per core
} virNodeInfo;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNodeInfoPtr">Typedef </a>virNodeInfoPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNodeInfo">virNodeInfo</a> * virNodeInfoPtr;
</pre><p>a <a href="libvirt-libvirt.html#virNodeInfoPtr">virNodeInfoPtr</a> is a pointer to a <a href="libvirt-libvirt.html#virNodeInfo">virNodeInfo</a> structure.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virSchedParameter">Structure </a>virSchedParameter</h3><pre class="programlisting">struct _virSchedParameter {
    charfield[VIR_DOMAIN_SCHED_FIELD_LENGTH]	field	: parameter name
    int	type	: parameter type
} virSchedParameter;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virSchedParameterPtr">Typedef </a>virSchedParameterPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virSchedParameter">virSchedParameter</a> * virSchedParameterPtr;
</pre><p>a <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> is a pointer to a <a href="libvirt-libvirt.html#virSchedParameter">virSchedParameter</a> structure.</p>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virSchedParameterType">Enum </a>virSchedParameterType</h3><pre class="programlisting">enum <a href="#virSchedParameterType">virSchedParameterType</a> {
    <a name="VIR_DOMAIN_SCHED_FIELD_INT">VIR_DOMAIN_SCHED_FIELD_INT</a> = 1 /* integer case */
    <a name="VIR_DOMAIN_SCHED_FIELD_UINT">VIR_DOMAIN_SCHED_FIELD_UINT</a> = 2 /* unsigned integer case */
    <a name="VIR_DOMAIN_SCHED_FIELD_LLONG">VIR_DOMAIN_SCHED_FIELD_LLONG</a> = 3 /* long long case */
    <a name="VIR_DOMAIN_SCHED_FIELD_ULLONG">VIR_DOMAIN_SCHED_FIELD_ULLONG</a> = 4 /* unsigned long long case */
    <a name="VIR_DOMAIN_SCHED_FIELD_DOUBLE">VIR_DOMAIN_SCHED_FIELD_DOUBLE</a> = 5 /* double case */
    <a name="VIR_DOMAIN_SCHED_FIELD_BOOLEAN">VIR_DOMAIN_SCHED_FIELD_BOOLEAN</a> = 6 /*  boolean(character) case */
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virVcpuInfo">Structure </a>virVcpuInfo</h3><pre class="programlisting">struct _virVcpuInfo {
    unsigned int	number	: virtual CPU number
    int	state	: value from <a href="libvirt-libvirt.html#virVcpuState">virVcpuState</a>
    unsigned long long	cpuTime	: CPU time used, in nanoseconds
    int	cpu	: real CPU number, or -1 if offline
} virVcpuInfo;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virVcpuInfoPtr">Typedef </a>virVcpuInfoPtr</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virVcpuInfo">virVcpuInfo</a> * virVcpuInfoPtr;
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virVcpuState">Enum </a>virVcpuState</h3><pre class="programlisting">enum <a href="#virVcpuState">virVcpuState</a> {
    <a name="VIR_VCPU_OFFLINE">VIR_VCPU_OFFLINE</a> = 0 /* the virtual CPU is offline */
    <a name="VIR_VCPU_RUNNING">VIR_VCPU_RUNNING</a> = 1 /* the virtual CPU is running */
    <a name="VIR_VCPU_BLOCKED">VIR_VCPU_BLOCKED</a> = 2 /*  the virtual CPU is blocked on resource */
};
</pre><p/>
</div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectClose"/>virConnectClose ()</h3><pre class="programlisting">int	virConnectClose			(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>This function closes the connection to the Hypervisor. This should not be called if further interaction with the Hypervisor are needed especially if there is running domain which need further monitoring by the application.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success or -1 in case of error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetCapabilities"/>virConnectGetCapabilities ()</h3><pre class="programlisting">char *	virConnectGetCapabilities	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Provides capabilities of the hypervisor / driver.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, or a pointer to an opaque virCapabilities structure (virCapabilitiesPtr). The client must free the returned string after use.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetHostname"/>virConnectGetHostname ()</h3><pre class="programlisting">char *	virConnectGetHostname		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>This returns the system hostname on which the hypervisor is running (the result of the gethostname(2) system call). If we are connected to a remote system, then this returns the hostname of the remote system.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to a hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the hostname which must be freed by the caller, or NULL if there was an error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetMaxVcpus"/>virConnectGetMaxVcpus ()</h3><pre class="programlisting">int	virConnectGetMaxVcpus		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * type)<br/>
</pre><p>Provides the maximum number of virtual CPUs supported for a guest VM of a specific type. The 'type' parameter here corresponds to the 'type' attribute in the &lt;domain&gt; element of the XML.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>type</tt></i>:</span></td><td>value of the 'type' attribute in the &lt;domain&gt; element</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the maximum of virtual CPU or -1 in case of error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetType"/>virConnectGetType ()</h3><pre class="programlisting">const char *	virConnectGetType	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Get the name of the Hypervisor software used.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, a static zero terminated string otherwise. See also: http://www.redhat.com/archives/libvir-list/2007-February/msg00096.html</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetURI"/>virConnectGetURI ()</h3><pre class="programlisting">char *	virConnectGetURI		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>This returns the URI (name) of the hypervisor connection. Normally this is the same as or similar to the string passed to the virConnectOpen/virConnectOpenReadOnly call, but the driver may make the URI canonical. If name == NULL was passed to virConnectOpen, then the driver will return a non-NULL URI which can be used to connect to the same hypervisor later.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to a hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the URI string which must be freed by the caller, or NULL if there was an error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectGetVersion"/>virConnectGetVersion ()</h3><pre class="programlisting">int	virConnectGetVersion		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 unsigned long * hvVer)<br/>
</pre><p>Get the version level of the Hypervisor running. This may work only with hypervisor call, i.e. with priviledged access to the hypervisor, not with a Read-Only connection.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>hvVer</tt></i>:</span></td><td>return value for the version of the running hypervisor (OUT)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 otherwise. if the version can't be extracted by lack of capacities returns 0 and @hvVer is 0, otherwise @hvVer value is major * 1,000,000 + minor * 1,000 + release</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectListDefinedDomains"/>virConnectListDefinedDomains ()</h3><pre class="programlisting">int	virConnectListDefinedDomains	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames)<br/>
</pre><p>list the defined domains, stores the pointers to the names in @names</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>pointer to an array to store the names</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of names provided in the array or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectListDefinedNetworks"/>virConnectListDefinedNetworks ()</h3><pre class="programlisting">int	virConnectListDefinedNetworks	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames)<br/>
</pre><p>list the inactive networks, stores the pointers to the names in @names</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>pointer to an array to store the names</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of names provided in the array or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectListDomains"/>virConnectListDomains ()</h3><pre class="programlisting">int	virConnectListDomains		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 int * ids, <br/>					 int maxids)<br/>
</pre><p>Collect the list of active domains, and store their ID in @maxids</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>ids</tt></i>:</span></td><td>array to collect the list of IDs of active domains</td></tr><tr><td><span class="term"><i><tt>maxids</tt></i>:</span></td><td>size of @ids</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of domain found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectListNetworks"/>virConnectListNetworks ()</h3><pre class="programlisting">int	virConnectListNetworks		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 char ** const names, <br/>					 int maxnames)<br/>
</pre><p>Collect the list of active networks, and store their names in @names</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>array to collect the list of names of active networks</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of @names</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of networks found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectNumOfDefinedDomains"/>virConnectNumOfDefinedDomains ()</h3><pre class="programlisting">int	virConnectNumOfDefinedDomains	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Provides the number of inactive domains.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of domain found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectNumOfDefinedNetworks"/>virConnectNumOfDefinedNetworks ()</h3><pre class="programlisting">int	virConnectNumOfDefinedNetworks	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Provides the number of inactive networks.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of networks found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectNumOfDomains"/>virConnectNumOfDomains ()</h3><pre class="programlisting">int	virConnectNumOfDomains		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Provides the number of active domains.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of domain found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectNumOfNetworks"/>virConnectNumOfNetworks ()</h3><pre class="programlisting">int	virConnectNumOfNetworks		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br/>
</pre><p>Provides the number of active networks.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of network found or -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectOpen"/>virConnectOpen ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	virConnectOpen		(const char * name)<br/>
</pre><p>This function should be called first to get a connection to the Hypervisor and xen store</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>URI of the hypervisor</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the hypervisor connection or NULL in case of error URIs are documented at http://libvirt.org/uri.html</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virConnectOpenReadOnly"/>virConnectOpenReadOnly ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	virConnectOpenReadOnly	(const char * name)<br/>
</pre><p>This function should be called first to get a restricted connection to the libbrary functionalities. The set of APIs usable are then restricted on the available methods to control the domains.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>URI of the hypervisor</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the hypervisor connection or NULL in case of error URIs are documented at http://libvirt.org/uri.html</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainAttachDevice"/>virDomainAttachDevice ()</h3><pre class="programlisting">int	virDomainAttachDevice		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * xml)<br/>
</pre><p>Create a virtual device attachment to backend.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>pointer to XML description of one device</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainBlockStats"/>virDomainBlockStats ()</h3><pre class="programlisting">int	virDomainBlockStats		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom, <br/>					 const char * path, <br/>					 <a href="libvirt-libvirt.html#virDomainBlockStatsPtr">virDomainBlockStatsPtr</a> stats, <br/>					 size_t size)<br/>
</pre><p>This function returns block device (disk) stats for block devices attached to the domain. The path parameter is the name of the block device. Get this by calling <a href="libvirt-libvirt.html#virDomainGetXMLDesc">virDomainGetXMLDesc</a> and finding the &lt;target dev='...'&gt; attribute within //domain/devices/disk. (For example, "xvda"). Domains may have more than one block device. To get stats for each you should make multiple calls to this function. Individual fields within the stats structure may be returned as -1, which indicates that the hypervisor does not support that particular statistic.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>dom</tt></i>:</span></td><td>pointer to the domain object</td></tr><tr><td><span class="term"><i><tt>path</tt></i>:</span></td><td>path to the block device</td></tr><tr><td><span class="term"><i><tt>stats</tt></i>:</span></td><td>block device stats (returned)</td></tr><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>size of stats structure</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success or -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainCoreDump"/>virDomainCoreDump ()</h3><pre class="programlisting">int	virDomainCoreDump		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 const char * to, <br/>					 int flags)<br/>
</pre><p>This method will dump the core of a domain on a given file for analysis. Note that for remote Xen Daemon the file path will be interpreted in the remote host.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>to</tt></i>:</span></td><td>path for the core file</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>extra flags, currently unused</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainCreate"/>virDomainCreate ()</h3><pre class="programlisting">int	virDomainCreate			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>launch a defined domain. If the call succeed the domain moves from the defined to the running domains pools.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to a defined domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainCreateLinux"/>virDomainCreateLinux ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainCreateLinux	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xmlDesc, <br/>					 unsigned int flags)<br/>
</pre><p>Launch a new Linux guest domain, based on an XML description similar to the one returned by virDomainGetXMLDesc() This function may requires priviledged access to the hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>xmlDesc</tt></i>:</span></td><td>an XML description of the domain</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>an optional set of virDomainFlags</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new domain object or NULL in case of failure</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainDefineXML"/>virDomainDefineXML ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainDefineXML	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xml)<br/>
</pre><p>define a domain, but does not start it</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>the XML description for the domain, preferably in UTF-8</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, a pointer to the domain otherwise</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainDestroy"/>virDomainDestroy ()</h3><pre class="programlisting">int	virDomainDestroy		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Destroy the domain object. The running instance is shutdown if not down already and all resources used by it are given back to the hypervisor. The data structure is freed and should not be used thereafter if the call does not return an error. This function may requires priviledged access</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainDetachDevice"/>virDomainDetachDevice ()</h3><pre class="programlisting">int	virDomainDetachDevice		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * xml)<br/>
</pre><p>Destroy a virtual device attachment to backend.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>pointer to XML description of one device</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainFree"/>virDomainFree ()</h3><pre class="programlisting">int	virDomainFree			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Free the domain object. The running instance is kept alive. The data structure is freed and should not be used thereafter.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetAutostart"/>virDomainGetAutostart ()</h3><pre class="programlisting">int	virDomainGetAutostart		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int * autostart)<br/>
</pre><p>Provides a boolean value indicating whether the domain configured to be automatically started when the host machine boots.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>autostart</tt></i>:</span></td><td>the value returned</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetConnect"/>virDomainGetConnect ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	virDomainGetConnect	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom)<br/>
</pre><p>Provides the connection pointer associated with a domain. The reference counter on the connection is not increased by this call. WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the domain object together.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>dom</tt></i>:</span></td><td>pointer to a domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> or NULL in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetID"/>virDomainGetID ()</h3><pre class="programlisting">unsigned int	virDomainGetID		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Get the hypervisor ID number for the domain</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the domain ID number or (unsigned int) -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetInfo"/>virDomainGetInfo ()</h3><pre class="programlisting">int	virDomainGetInfo		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virDomainInfoPtr">virDomainInfoPtr</a> info)<br/>
</pre><p>Extract information about a domain. Note that if the connection used to get the domain is limited only a partial set of the information can be extracted.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>info</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#virDomainInfo">virDomainInfo</a> structure allocated by the user</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetMaxMemory"/>virDomainGetMaxMemory ()</h3><pre class="programlisting">unsigned long	virDomainGetMaxMemory	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Retrieve the maximum amount of physical memory allocated to a domain. If domain is NULL, then this get the amount of memory reserved to Domain0 i.e. the domain where the application runs.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object or NULL</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the memory size in kilobytes or 0 in case of error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetMaxVcpus"/>virDomainGetMaxVcpus ()</h3><pre class="programlisting">int	virDomainGetMaxVcpus		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Provides the maximum number of virtual CPUs supported for the guest VM. If the guest is inactive, this is basically the same as virConnectGetMaxVcpus. If the guest is running this will reflect the maximum number of virtual CPUs the guest was booted with.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the maximum of virtual CPU or -1 in case of error.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetName"/>virDomainGetName ()</h3><pre class="programlisting">const char *	virDomainGetName	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Get the public name for that domain</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the domain object.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetOSType"/>virDomainGetOSType ()</h3><pre class="programlisting">char *	virDomainGetOSType		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Get the type of domain operation system.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new string or NULL in case of error, the string must be freed by the caller.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetSchedulerParameters"/>virDomainGetSchedulerParameters ()</h3><pre class="programlisting">int	virDomainGetSchedulerParameters	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> params, <br/>					 int * nparams)<br/>
</pre><p>Get the scheduler parameters, the @params array will be filled with the values.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>params</tt></i>:</span></td><td>pointer to scheduler parameter object (return value)</td></tr><tr><td><span class="term"><i><tt>nparams</tt></i>:</span></td><td>pointer to number of scheduler parameter (this value should be same than the returned value nparams of virDomainGetSchedulerType)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetSchedulerType"/>virDomainGetSchedulerType ()</h3><pre class="programlisting">char *	virDomainGetSchedulerType	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int * nparams)<br/>
</pre><p>Get the scheduler type.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>nparams</tt></i>:</span></td><td>number of scheduler parameters(return value)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error. The caller must free the returned string.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetUUID"/>virDomainGetUUID ()</h3><pre class="programlisting">int	virDomainGetUUID		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned char * uuid)<br/>
</pre><p>Get the UUID for a domain</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>uuid</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#VIR_UUID_BUFLEN">VIR_UUID_BUFLEN</a> bytes array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetUUIDString"/>virDomainGetUUIDString ()</h3><pre class="programlisting">int	virDomainGetUUIDString		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 char * buf)<br/>
</pre><p>Get the UUID for a domain as string. For more information about UUID see RFC4122.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>buf</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#VIR_UUID_STRING_BUFLEN">VIR_UUID_STRING_BUFLEN</a> bytes array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetVcpus"/>virDomainGetVcpus ()</h3><pre class="programlisting">int	virDomainGetVcpus		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virVcpuInfoPtr">virVcpuInfoPtr</a> info, <br/>					 int maxinfo, <br/>					 unsigned char * cpumaps, <br/>					 int maplen)<br/>
</pre><p>Extract information about virtual CPUs of domain, store it in info array and also in cpumaps if this pointer is'nt NULL.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object, or NULL for Domain0</td></tr><tr><td><span class="term"><i><tt>info</tt></i>:</span></td><td>pointer to an array of <a href="libvirt-libvirt.html#virVcpuInfo">virVcpuInfo</a> structures (OUT)</td></tr><tr><td><span class="term"><i><tt>maxinfo</tt></i>:</span></td><td>number of structures in info array</td></tr><tr><td><span class="term"><i><tt>cpumaps</tt></i>:</span></td><td>pointer to an bit map of real CPUs for all vcpus of this domain (in 8-bit bytes) (OUT) If cpumaps is NULL, then no cupmap information is returned by the API. It's assumed there is &lt;maxinfo&gt; cpumap in cpumaps array. The memory allocated to cpumaps must be (maxinfo * maplen) bytes (ie: calloc(maxinfo, maplen)). One cpumap inside cpumaps has the format described in virDomainPinVcpu() API.</td></tr><tr><td><span class="term"><i><tt>maplen</tt></i>:</span></td><td>number of bytes in one cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...).</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of info filled in case of success, -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainGetXMLDesc"/>virDomainGetXMLDesc ()</h3><pre class="programlisting">char *	virDomainGetXMLDesc		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int flags)<br/>
</pre><p>Provide an XML description of the domain. The description may be reused later to relaunch the domain with virDomainCreateLinux().</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>and OR'ed set of extraction flags, not used yet</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainInterfaceStats"/>virDomainInterfaceStats ()</h3><pre class="programlisting">int	virDomainInterfaceStats		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom, <br/>					 const char * path, <br/>					 <a href="libvirt-libvirt.html#virDomainInterfaceStatsPtr">virDomainInterfaceStatsPtr</a> stats, <br/>					 size_t size)<br/>
</pre><p>This function returns network interface stats for interfaces attached to the domain. The path parameter is the name of the network interface. Domains may have more than network interface. To get stats for each you should make multiple calls to this function. Individual fields within the stats structure may be returned as -1, which indicates that the hypervisor does not support that particular statistic.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>dom</tt></i>:</span></td><td>pointer to the domain object</td></tr><tr><td><span class="term"><i><tt>path</tt></i>:</span></td><td>path to the interface</td></tr><tr><td><span class="term"><i><tt>stats</tt></i>:</span></td><td>network interface stats (returned)</td></tr><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>size of stats structure</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success or -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainLookupByID"/>virDomainLookupByID ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainLookupByID	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 int id)<br/>
</pre><p>Try to find a domain based on the hypervisor ID number</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>id</tt></i>:</span></td><td>the domain ID number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new domain object or NULL in case of failure. If the domain cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_DOMAIN">VIR_ERR_NO_DOMAIN</a> error is raised.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainLookupByName"/>virDomainLookupByName ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainLookupByName	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * name)<br/>
</pre><p>Try to lookup a domain on the given hypervisor based on its name.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>name for the domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new domain object or NULL in case of failure. If the domain cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_DOMAIN">VIR_ERR_NO_DOMAIN</a> error is raised.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainLookupByUUID"/>virDomainLookupByUUID ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainLookupByUUID	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const unsigned char * uuid)<br/>
</pre><p>Try to lookup a domain on the given hypervisor based on its UUID.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>uuid</tt></i>:</span></td><td>the raw UUID for the domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new domain object or NULL in case of failure. If the domain cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_DOMAIN">VIR_ERR_NO_DOMAIN</a> error is raised.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainLookupByUUIDString"/>virDomainLookupByUUIDString ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainLookupByUUIDString	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>						 const char * uuidstr)<br/>
</pre><p>Try to lookup a domain on the given hypervisor based on its UUID.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>uuidstr</tt></i>:</span></td><td>the string UUID for the domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new domain object or NULL in case of failure. If the domain cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_DOMAIN">VIR_ERR_NO_DOMAIN</a> error is raised.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainMigrate"/>virDomainMigrate ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a>	virDomainMigrate	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> dconn, <br/>					 unsigned long flags, <br/>					 const char * dname, <br/>					 const char * uri, <br/>					 unsigned long bandwidth)<br/>
</pre><p>Migrate the domain object from its current host to the destination host given by dconn (a connection to the destination host). Flags may be one of more of the following: <a href="libvirt-libvirt.html#VIR_MIGRATE_LIVE">VIR_MIGRATE_LIVE</a> Attempt a live migration. If a hypervisor supports renaming domains during migration, then you may set the dname parameter to the new name (otherwise it keeps the same name). If this is not supported by the hypervisor, dname must be NULL or else you will get an error. Since typically the two hypervisors connect directly to each other in order to perform the migration, you may need to specify a path from the source to the destination. This is the purpose of the uri parameter. If uri is NULL, then libvirt will try to find the best method. Uri may specify the hostname or IP address of the destination host as seen from the source. Or uri may be a URI giving transport, hostname, user, port, etc. in the usual form. Refer to driver documentation for the particular URIs supported. The maximum bandwidth (in Mbps) that will be used to do migration can be specified with the bandwidth parameter. If set to 0, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if bandwidth is not 0. To see which features are supported by the current hypervisor, see virConnectGetCapabilities, /capabilities/host/migration_features. There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>dconn</tt></i>:</span></td><td>destination host (a connection object)</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>flags</td></tr><tr><td><span class="term"><i><tt>dname</tt></i>:</span></td><td>(optional) rename domain to this at destination</td></tr><tr><td><span class="term"><i><tt>uri</tt></i>:</span></td><td>(optional) dest hostname/URI as seen from the source host</td></tr><tr><td><span class="term"><i><tt>bandwidth</tt></i>:</span></td><td>(optional) specify migration bandwidth limit in Mbps</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new domain object if the migration was successful, or NULL in case of error. Note that the new domain object exists in the scope of the destination connection (dconn).</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainPinVcpu"/>virDomainPinVcpu ()</h3><pre class="programlisting">int	virDomainPinVcpu		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int vcpu, <br/>					 unsigned char * cpumap, <br/>					 int maplen)<br/>
</pre><p>Dynamically change the real CPUs which can be allocated to a virtual CPU. This function requires priviledged access to the hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object, or NULL for Domain0</td></tr><tr><td><span class="term"><i><tt>vcpu</tt></i>:</span></td><td>virtual CPU number</td></tr><tr><td><span class="term"><i><tt>cpumap</tt></i>:</span></td><td>pointer to a bit map of real CPUs (in 8-bit bytes) (IN) Each bit set to 1 means that corresponding CPU is usable. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit.</td></tr><tr><td><span class="term"><i><tt>maplen</tt></i>:</span></td><td>number of bytes in cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...). If maplen &lt; size, missing bytes are set to zero. If maplen &gt; size, failure code is returned.</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainReboot"/>virDomainReboot ()</h3><pre class="programlisting">int	virDomainReboot			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int flags)<br/>
</pre><p>Reboot a domain, the domain object is still usable there after but the domain OS is being stopped for a restart. Note that the guest OS may ignore the request.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>extra flags for the reboot operation, not used yet</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainRestore"/>virDomainRestore ()</h3><pre class="programlisting">int	virDomainRestore		(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * from)<br/>
</pre><p>This method will restore a domain saved to disk by virDomainSave().</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>from</tt></i>:</span></td><td>path to the</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainResume"/>virDomainResume ()</h3><pre class="programlisting">int	virDomainResume			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Resume an suspended domain, the process is restarted from the state where it was frozen by calling virSuspendDomain(). This function may requires priviledged access</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSave"/>virDomainSave ()</h3><pre class="programlisting">int	virDomainSave			(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 const char * to)<br/>
</pre><p>This method will suspend a domain and save its memory contents to a file on disk. After the call, if successful, the domain is not listed as running anymore (this may be a problem). Use virDomainRestore() to restore a domain after saving.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>to</tt></i>:</span></td><td>path for the output file</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSetAutostart"/>virDomainSetAutostart ()</h3><pre class="programlisting">int	virDomainSetAutostart		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 int autostart)<br/>
</pre><p>Configure the domain to be automatically started when the host machine boots.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>autostart</tt></i>:</span></td><td>whether the domain should be automatically started 0 or 1</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSetMaxMemory"/>virDomainSetMaxMemory ()</h3><pre class="programlisting">int	virDomainSetMaxMemory		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned long memory)<br/>
</pre><p>Dynamically change the maximum amount of physical memory allocated to a domain. If domain is NULL, then this change the amount of memory reserved to Domain0 i.e. the domain where the application runs. This function requires priviledged access to the hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object or NULL</td></tr><tr><td><span class="term"><i><tt>memory</tt></i>:</span></td><td>the memory size in kilobytes</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSetMemory"/>virDomainSetMemory ()</h3><pre class="programlisting">int	virDomainSetMemory		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned long memory)<br/>
</pre><p>Dynamically change the target amount of physical memory allocated to a domain. If domain is NULL, then this change the amount of memory reserved to Domain0 i.e. the domain where the application runs. This function may requires priviledged access to the hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object or NULL</td></tr><tr><td><span class="term"><i><tt>memory</tt></i>:</span></td><td>the memory size in kilobytes</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSetSchedulerParameters"/>virDomainSetSchedulerParameters ()</h3><pre class="programlisting">int	virDomainSetSchedulerParameters	(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> params, <br/>					 int nparams)<br/>
</pre><p>Change the scheduler parameters</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object</td></tr><tr><td><span class="term"><i><tt>params</tt></i>:</span></td><td>pointer to scheduler parameter objects</td></tr><tr><td><span class="term"><i><tt>nparams</tt></i>:</span></td><td>number of scheduler parameter (this value should be same or less than the returned value nparams of virDomainGetSchedulerType)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSetVcpus"/>virDomainSetVcpus ()</h3><pre class="programlisting">int	virDomainSetVcpus		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/>					 unsigned int nvcpus)<br/>
</pre><p>Dynamically change the number of virtual CPUs used by the domain. Note that this call may fail if the underlying virtualization hypervisor does not support it or if growing the number is arbitrary limited. This function requires priviledged access to the hypervisor.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to domain object, or NULL for Domain0</td></tr><tr><td><span class="term"><i><tt>nvcpus</tt></i>:</span></td><td>the new number of virtual CPUs for this domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainShutdown"/>virDomainShutdown ()</h3><pre class="programlisting">int	virDomainShutdown		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Shutdown a domain, the domain object is still usable there after but the domain OS is being stopped. Note that the guest OS may ignore the request. TODO: should we add an option for reboot, knowing it may not be doable in the general case ?</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainSuspend"/>virDomainSuspend ()</h3><pre class="programlisting">int	virDomainSuspend		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>Suspends an active domain, the process is frozen without further access to CPU resources and I/O but the memory used by the domain at the hypervisor level will stay allocated. Use virDomainResume() to reactivate the domain. This function may requires priviledged access.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>a domain object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virDomainUndefine"/>virDomainUndefine ()</h3><pre class="programlisting">int	virDomainUndefine		(<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain)<br/>
</pre><p>undefine a domain but does not stop it if it is running</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>domain</tt></i>:</span></td><td>pointer to a defined domain</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virGetVersion"/>virGetVersion ()</h3><pre class="programlisting">int	virGetVersion			(unsigned long * libVer, <br/>					 const char * type, <br/>					 unsigned long * typeVer)<br/>
</pre><p>Provides two information back, @libVer is the version of the library while @typeVer will be the version of the hypervisor type @type against which the library was compiled. If @type is NULL, "Xen" is assumed, if @type is unknown or not availble, an error code will be returned and @typeVer will be 0.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>libVer</tt></i>:</span></td><td>return value for the library version (OUT)</td></tr><tr><td><span class="term"><i><tt>type</tt></i>:</span></td><td>the type of connection/driver looked at</td></tr><tr><td><span class="term"><i><tt>typeVer</tt></i>:</span></td><td>return value for the version of the hypervisor (OUT)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of failure, 0 otherwise, and values for @libVer and @typeVer have the format major * 1,000,000 + minor * 1,000 + release.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virInitialize"/>virInitialize ()</h3><pre class="programlisting">int	virInitialize			(void)<br/>
</pre><p>Initialize the library. It's better to call this routine at startup in multithreaded applications to avoid potential race when initializing the library.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkCreate"/>virNetworkCreate ()</h3><pre class="programlisting">int	virNetworkCreate		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Create and start a defined network. If the call succeed the network moves from the defined to the running networks pools.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>pointer to a defined network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of error</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkCreateXML"/>virNetworkCreateXML ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	virNetworkCreateXML	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xmlDesc)<br/>
</pre><p>Create and start a new virtual network, based on an XML description similar to the one returned by virNetworkGetXMLDesc()</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>xmlDesc</tt></i>:</span></td><td>an XML description of the network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new network object or NULL in case of failure</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkDefineXML"/>virNetworkDefineXML ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	virNetworkDefineXML	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * xml)<br/>
</pre><p>Define a network, but does not create it</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>the XML description for the network, preferably in UTF-8</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, a pointer to the network otherwise</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkDestroy"/>virNetworkDestroy ()</h3><pre class="programlisting">int	virNetworkDestroy		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Destroy the network object. The running instance is shutdown if not down already and all resources used by it are given back to the hypervisor. The data structure is freed and should not be used thereafter if the call does not return an error. This function may requires priviledged access</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkFree"/>virNetworkFree ()</h3><pre class="programlisting">int	virNetworkFree			(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Free the network object. The running instance is kept alive. The data structure is freed and should not be used thereafter.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkGetAutostart"/>virNetworkGetAutostart ()</h3><pre class="programlisting">int	virNetworkGetAutostart		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int * autostart)<br/>
</pre><p>Provides a boolean value indicating whether the network configured to be automatically started when the host machine boots.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>autostart</tt></i>:</span></td><td>the value returned</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkGetBridgeName"/>virNetworkGetBridgeName ()</h3><pre class="programlisting">char *	virNetworkGetBridgeName		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Provides a bridge interface name to which a domain may connect a network interface in order to join the network.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated interface name, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkGetConnect"/>virNetworkGetConnect ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a>	virNetworkGetConnect	(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> net)<br/>
</pre><p>Provides the connection pointer associated with a network. The reference counter on the connection is not increased by this call. WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the network object together.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>net</tt></i>:</span></td><td>pointer to a network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> or NULL in case of failure.</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkGetName"/>virNetworkGetName ()</h3><pre class="programlisting">const char *	virNetworkGetName	(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Get the public name for that network</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the network object.</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkGetUUID"/>virNetworkGetUUID ()</h3><pre class="programlisting">int	virNetworkGetUUID		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 unsigned char * uuid)<br/>
</pre><p>Get the UUID for a network</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>uuid</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#VIR_UUID_BUFLEN">VIR_UUID_BUFLEN</a> bytes array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkGetUUIDString"/>virNetworkGetUUIDString ()</h3><pre class="programlisting">int	virNetworkGetUUIDString		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 char * buf)<br/>
</pre><p>Get the UUID for a network as string. For more information about UUID see RFC4122.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>buf</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#VIR_UUID_STRING_BUFLEN">VIR_UUID_STRING_BUFLEN</a> bytes array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkGetXMLDesc"/>virNetworkGetXMLDesc ()</h3><pre class="programlisting">char *	virNetworkGetXMLDesc		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int flags)<br/>
</pre><p>Provide an XML description of the network. The description may be reused later to relaunch the network with virNetworkCreateXML().</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>and OR'ed set of extraction flags, not used yet</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkLookupByName"/>virNetworkLookupByName ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	virNetworkLookupByName	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const char * name)<br/>
</pre><p>Try to lookup a network on the given hypervisor based on its name.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>name for the network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new network object or NULL in case of failure. If the network cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_NETWORK">VIR_ERR_NO_NETWORK</a> error is raised.</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkLookupByUUID"/>virNetworkLookupByUUID ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	virNetworkLookupByUUID	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 const unsigned char * uuid)<br/>
</pre><p>Try to lookup a network on the given hypervisor based on its UUID.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>uuid</tt></i>:</span></td><td>the raw UUID for the network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new network object or NULL in case of failure. If the network cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_NETWORK">VIR_ERR_NO_NETWORK</a> error is raised.</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkLookupByUUIDString"/>virNetworkLookupByUUIDString ()</h3><pre class="programlisting"><a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a>	virNetworkLookupByUUIDString	(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>						 const char * uuidstr)<br/>
</pre><p>Try to lookup a network on the given hypervisor based on its UUID.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>uuidstr</tt></i>:</span></td><td>the string UUID for the network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new network object or NULL in case of failure. If the network cannot be found, then <a href="libvirt-virterror.html#VIR_ERR_NO_NETWORK">VIR_ERR_NO_NETWORK</a> error is raised.</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="virNetworkSetAutostart"/>virNetworkSetAutostart ()</h3><pre class="programlisting">int	virNetworkSetAutostart		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network, <br/>					 int autostart)<br/>
</pre><p>Configure the network to be automatically started when the host machine boots.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>a network object</td></tr><tr><td><span class="term"><i><tt>autostart</tt></i>:</span></td><td>whether the network should be automatically started 0 or 1</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 in case of success</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNetworkUndefine"/>virNetworkUndefine ()</h3><pre class="programlisting">int	virNetworkUndefine		(<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network)<br/>
</pre><p>Undefine a network but does not stop it if it is running</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>network</tt></i>:</span></td><td>pointer to a defined network</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success, -1 in case of error</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="virNodeGetInfo"/>virNodeGetInfo ()</h3><pre class="programlisting">int	virNodeGetInfo			(<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/>					 <a href="libvirt-libvirt.html#virNodeInfoPtr">virNodeInfoPtr</a> info)<br/>
</pre><p>Extract hardware information about the node.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>info</tt></i>:</span></td><td>pointer to a <a href="libvirt-libvirt.html#virNodeInfo">virNodeInfo</a> structure allocated by the user</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success and -1 in case of failure.</td></tr></tbody></table></div></div>
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