| libvirt | API documentation | The virtualization API |
|---|
Provides the interfaces of the libvirt library to handle errors raised while using the library.
Structure virError
struct _virError
Enum virErrorDomain
Enum virErrorLevel
Enum virErrorNumber
Typedef virError * virErrorPtr
int virConnCopyLastError (virConnectPtr conn,
virErrorPtr to)
virErrorPtr virConnGetLastError (virConnectPtr conn)
void virConnResetLastError (virConnectPtr conn)
void virConnSetErrorFunc (virConnectPtr conn,
void * userData,
virErrorFunc handler)
int virCopyLastError (virErrorPtr to)
Function type: virErrorFunc void virErrorFunc (void * userData,
virErrorPtr error)
virErrorPtr virGetLastError (void)
void virResetError (virErrorPtr err)
void virResetLastError (void)
void virSetErrorFunc (void * userData,
virErrorFunc handler)
Structure virError
struct _virError { int code : The error code, e.g. an virParserError int domain : What part of the library raised this er char * message : human-readable informative error messag virErrorLevel level : how consequent is the error virConnectPtr conn : the connection if available virDomainPtr dom : the domain if available 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 }
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_DOM = 3 : Error when operating on a domain
}
Enum virErrorLevel {
VIR_ERR_NONE = 0
VIR_ERR_WARNING = 1 : A simple warning
VIR_ERR_ERROR = 2 : An error
}
Enum virErrorNumber {
VIR_ERR_OK = 0
VIR_ERR_INTERNAL_ERROR = 1 : 1
VIR_ERR_NO_MEMORY = 2 : 2
}
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()
| conn: | pointer to the hypervisor connection |
| to: | target to receive the copy |
| Returns: | 0 if no error was found and the error code otherwise and -1 in case of parameter error. |
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()
| conn: | pointer to the hypervisor connection |
| Returns: | a pointer to the last error or NULL if none occured. |
void virConnResetLastError (virConnectPtr conn)
Reset the last error caught on that connection
| conn: | pointer to the hypervisor connection |
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.
| conn: | pointer to the hypervisor connection |
| userData: | pointer to the user data provided in the handler callback |
| handler: | the function to get called in case of error or NULL |
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()
| to: | target to receive the copy |
| Returns: | 0 if no error was found and the error code otherwise and -1 in case of parameter error. |
Function type: virErrorFunc void virErrorFunc (void * userData,
virErrorPtr error)
Signature of a function to use when there is an error raised by the library.
| userData: | user provided data for the error callback |
| error: | the error being raised. |
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()
| Returns: | a pointer to the last error or NULL if none occured. |
void virResetError (virErrorPtr err)
Reset the error being pointed to
| err: | pointer to the virError to clean up |
void virResetLastError (void)
Reset the last error caught at the library level.
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.
| userData: | pointer to the user data provided in the handler callback |
| handler: | the function to get called in case of error or NULL |