In addition to the error names user programs define, D-Bus knows a
number of generic, standardized error names that are listed below.
In addition to this list, in sd-bus, the special error namespace
"System.Error." is used to map arbitrary Linux system errors (as
defined by errno(3)) to D-Bus errors and back. For example, the error
EUCLEAN is mapped to "System.Error.EUCLEAN" and back.
SD_BUS_ERROR_FAILED
A generic error indication. See the error message for further
details. This error name should be avoided, in favor of a more
expressive error name.
SD_BUS_ERROR_NO_MEMORY
A memory allocation failed, and the requested operation could not
be completed.
SD_BUS_ERROR_SERVICE_UNKNOWN
The contacted bus service is unknown and cannot be activated.
SD_BUS_ERROR_NAME_HAS_NO_OWNER
The specified bus service name currently has no owner.
SD_BUS_ERROR_NO_REPLY
A message did not receive a reply. This error is usually
generated after a timeout.
SD_BUS_ERROR_IO_ERROR
Generic input/output error, for example when accessing a socket
or other I/O context.
SD_BUS_ERROR_BAD_ADDRESS
The specified D-Bus bus address string is malformed.
SD_BUS_ERROR_NOT_SUPPORTED
The requested operation is not supported on the local system.
SD_BUS_ERROR_LIMITS_EXCEEDED
Some limited resource has been exhausted.
SD_BUS_ERROR_ACCESS_DENIED
Access to a resource has been denied due to security
restrictions.
SD_BUS_ERROR_AUTH_FAILED
Authentication did not complete successfully.
SD_BUS_ERROR_NO_SERVER
Unable to connect to the specified server.
SD_BUS_ERROR_TIMEOUT
An operation timed out. Note that method calls which timeout
generate a SD_BUS_ERROR_NO_REPLY.
SD_BUS_ERROR_NO_NETWORK
No network available to execute requested network operation on.
SD_BUS_ERROR_ADDRESS_IN_USE
The specified network address is already being listened on.
SD_BUS_ERROR_DISCONNECTED
The connection has been terminated.
SD_BUS_ERROR_INVALID_ARGS
One or more invalid arguments have been passed.
SD_BUS_ERROR_FILE_NOT_FOUND
The requested file could not be found.
SD_BUS_ERROR_FILE_EXISTS
The requested file already exists.
SD_BUS_ERROR_UNKNOWN_METHOD
The requested method does not exist in the selected interface.
SD_BUS_ERROR_UNKNOWN_OBJECT
The requested object does not exist in the selected service.
SD_BUS_ERROR_UNKNOWN_INTERFACE
The requested interface does not exist on the selected object.
SD_BUS_ERROR_UNKNOWN_PROPERTY
The requested property does not exist in the selected interface.
SD_BUS_ERROR_PROPERTY_READ_ONLY
A write operation was requested on a read-only property.
SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN
The requested PID is not known.
SD_BUS_ERROR_INVALID_SIGNATURE
The specified message signature is not valid.
SD_BUS_ERROR_INCONSISTENT_MESSAGE
The passed message does not validate correctly.
SD_BUS_ERROR_MATCH_RULE_NOT_FOUND
The specified match rule does not exist.
SD_BUS_ERROR_MATCH_RULE_INVALID
The specified match rule is invalid.
SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED
Access to the requested operation is not permitted. However, it
might be available after interactive authentication. This is
usually returned by method calls supporting a framework for
additional interactive authorization, when interactive
authorization was not enabled with the
sd_bus_message_set_allow_interactive_authorization(3) for the
method call message.
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systemd 246 SD-BUS-ERRORS(3)