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In datatype.c, virGetDomainSnapshot could result in the message:
error: invalid domain pointer in bad domain
Furthermore, while there are a few functions in libvirt.c that
only care about a virDomainPtr without regards to the connection
(such as virDomainGetName), most functions also require a valid
connection. Yet several functions were blindly dereferencing
the conn member without checking it for validity first (such as
virDomainOpenConsole). Rather than try and correct all usage
of VIR_IS_DOMAIN vs. VIR_IS_CONNECTED_DOMAIN, it is easier to
just blindly require that a valid domain object always has a
valid connection object (which should be true anyways, since
every domain object holds a reference to its connection, so the
connection will not be closed until all domain objects have
also been closed to release their reference).
After this patch, all places that validate a domain consistently
report:
error: invalid domain pointer in someFunc
* src/datatypes.h (virCheckDomainReturn, virCheckDomainGoto): New
macros.
* src/datatypes.c (virGetDomainSnapshot): Use new macro.
(virLibConnError): Delete unused macro.
Signed-off-by: Eric Blake <eblake@redhat.com>
6e130ddc4d