Structure virError

struct _virError {
    int	code	: The error code, a virErrorNumber
    int	domain	: What part of the library raised this error
    char *	message	: human-readable informative error message
    virErrorLevel	level	: how consequent is the error
    virConnectPtr	conn	: connection if available, see note above
    virDomainPtr	dom	: domain if available, see note above
    char *	str1	: extra string information
    char *	str2	: extra string information
    char *	str3	: extra string information
    int	int1	: extra number information
    int	int2	: extra number information
    virNetworkPtr	net	: network if available, see note above
} virError;

Enum virErrorDomain

enum virErrorDomain {
    VIR_FROM_NONE = 0
    VIR_FROM_XEN = 1 /* Error at Xen hypervisor layer */
    VIR_FROM_XEND = 2 /* Error at connection with xend daemon */
    VIR_FROM_XENSTORE = 3 /* Error at connection with xen store */
    VIR_FROM_SEXPR = 4 /* Error in the S-Expression code */
    VIR_FROM_XML = 5 /* Error in the XML code */
    VIR_FROM_DOM = 6 /* Error when operating on a domain */
    VIR_FROM_RPC = 7 /* Error in the XML-RPC code */
    VIR_FROM_PROXY = 8 /* Error in the proxy code */
    VIR_FROM_CONF = 9 /* Error in the configuration file handling */
    VIR_FROM_QEMU = 10 /* Error at the QEMU daemon */
    VIR_FROM_NET = 11 /* Error when operating on a network */
    VIR_FROM_TEST = 12 /* Error from test driver */
    VIR_FROM_REMOTE = 13 /* Error from remote driver */
    VIR_FROM_OPENVZ = 14 /* Error from OpenVZ driver */
    VIR_FROM_XENXM = 15 /* Error at Xen XM layer */
    VIR_FROM_STATS_LINUX = 16 /* Error in the Linux Stats code */
    VIR_FROM_LXC = 17 /* Error from Linux Container driver */
    VIR_FROM_STORAGE = 18 /*  Error from storage driver */
};

Enum virErrorLevel

enum virErrorLevel {
    VIR_ERR_NONE = 0
    VIR_ERR_WARNING = 1 /* A simple warning */
    VIR_ERR_ERROR = 2 /*  An error */
};

Enum virErrorNumber

enum virErrorNumber {
    VIR_ERR_OK = 0
    VIR_ERR_INTERNAL_ERROR = 1 /* internal error */
    VIR_ERR_NO_MEMORY = 2 /* memory allocation failure */
    VIR_ERR_NO_SUPPORT = 3 /* no support for this function */
    VIR_ERR_UNKNOWN_HOST = 4 /* could not resolve hostname */
    VIR_ERR_NO_CONNECT = 5 /* can't connect to hypervisor */
    VIR_ERR_INVALID_CONN = 6 /* invalid connection object */
    VIR_ERR_INVALID_DOMAIN = 7 /* invalid domain object */
    VIR_ERR_INVALID_ARG = 8 /* invalid function argument */
    VIR_ERR_OPERATION_FAILED = 9 /* a command to hypervisor failed */
    VIR_ERR_GET_FAILED = 10 /* a HTTP GET command to failed */
    VIR_ERR_POST_FAILED = 11 /* a HTTP POST command to failed */
    VIR_ERR_HTTP_ERROR = 12 /* unexpected HTTP error code */
    VIR_ERR_SEXPR_SERIAL = 13 /* failure to serialize an S-Expr */
    VIR_ERR_NO_XEN = 14 /* could not open Xen hypervisor control */
    VIR_ERR_XEN_CALL = 15 /* failure doing an hypervisor call */
    VIR_ERR_OS_TYPE = 16 /* unknown OS type */
    VIR_ERR_NO_KERNEL = 17 /* missing kernel information */
    VIR_ERR_NO_ROOT = 18 /* missing root device information */
    VIR_ERR_NO_SOURCE = 19 /* missing source device information */
    VIR_ERR_NO_TARGET = 20 /* missing target device information */
    VIR_ERR_NO_NAME = 21 /* missing domain name information */
    VIR_ERR_NO_OS = 22 /* missing domain OS information */
    VIR_ERR_NO_DEVICE = 23 /* missing domain devices information */
    VIR_ERR_NO_XENSTORE = 24 /* could not open Xen Store control */
    VIR_ERR_DRIVER_FULL = 25 /* too many drivers registered */
    VIR_ERR_CALL_FAILED = 26 /* not supported by the drivers (DEPRECATED) */
    VIR_ERR_XML_ERROR = 27 /* an XML description is not well formed or broken */
    VIR_ERR_DOM_EXIST = 28 /* the domain already exist */
    VIR_ERR_OPERATION_DENIED = 29 /* operation forbidden on read-only connections */
    VIR_ERR_OPEN_FAILED = 30 /* failed to open a conf file */
    VIR_ERR_READ_FAILED = 31 /* failed to read a conf file */
    VIR_ERR_PARSE_FAILED = 32 /* failed to parse a conf file */
    VIR_ERR_CONF_SYNTAX = 33 /* failed to parse the syntax of a conf file */
    VIR_ERR_WRITE_FAILED = 34 /* failed to write a conf file */
    VIR_ERR_XML_DETAIL = 35 /* detail of an XML error */
    VIR_ERR_INVALID_NETWORK = 36 /* invalid network object */
    VIR_ERR_NETWORK_EXIST = 37 /* the network already exist */
    VIR_ERR_SYSTEM_ERROR = 38 /* general system call failure */
    VIR_ERR_RPC = 39 /* some sort of RPC error */
    VIR_ERR_GNUTLS_ERROR = 40 /* error from a GNUTLS call */
    VIR_WAR_NO_NETWORK = 41 /* failed to start network */
    VIR_ERR_NO_DOMAIN = 42 /* domain not found or unexpectedly disappeared */
    VIR_ERR_NO_NETWORK = 43 /* network not found */
    VIR_ERR_INVALID_MAC = 44 /* invalid MAC address */
    VIR_ERR_AUTH_FAILED = 45 /* authentication failed */
    VIR_ERR_INVALID_STORAGE_POOL = 46 /* invalid storage pool object */
    VIR_ERR_INVALID_STORAGE_VOL = 47 /* invalid storage vol object */
    VIR_WAR_NO_STORAGE = 48 /* failed to start storage */
    VIR_ERR_NO_STORAGE_POOL = 49 /* storage pool not found */
    VIR_ERR_NO_STORAGE_VOL = 50 /*  storage pool not found */
};

Typedef virErrorPtr

virError * virErrorPtr;

Function type virErrorFunc

void	virErrorFunc			(void * userData, 
					 virErrorPtr error)

Signature of a function to use when there is an error raised by the library.

virConnCopyLastError ()

int	virConnCopyLastError		(virConnectPtr conn, 
					 virErrorPtr to)

Copy the content of the last error caught on that connection One will need to free the result with virResetError()

virConnGetLastError ()

virErrorPtr	virConnGetLastError	(virConnectPtr conn)

Provide a pointer to the last error caught on that connection Simpler but may not be suitable for multithreaded accesses, in which case use virConnCopyLastError()

virConnResetLastError ()

void	virConnResetLastError		(virConnectPtr conn)

Reset the last error caught on that connection

virConnSetErrorFunc ()

void	virConnSetErrorFunc		(virConnectPtr conn, 
					 void * userData, 
					 virErrorFunc handler)

Set a connection error handling function, if @handler is NULL it will reset to default which is to pass error back to the global library handler.

virCopyLastError ()

int	virCopyLastError		(virErrorPtr to)

Copy the content of the last error caught at the library level One will need to free the result with virResetError()

virDefaultErrorFunc ()

void	virDefaultErrorFunc		(virErrorPtr err)

Default routine reporting an error to stderr.

virGetLastError ()

virErrorPtr	virGetLastError		(void)

Provide a pointer to the last error caught at the library level Simpler but may not be suitable for multithreaded accesses, in which case use virCopyLastError()

virResetError ()

void	virResetError			(virErrorPtr err)

Reset the error being pointed to

virResetLastError ()

void	virResetLastError		(void)

Reset the last error caught at the library level.

virSetErrorFunc ()

void	virSetErrorFunc			(void * userData, 
					 virErrorFunc handler)

Set a library global error handling function, if @handler is NULL, it will reset to default printing on stderr. The error raised there are those for which no handler at the connection level could caught.