sd-bus-errors(3)


NAME

   sd-bus-errors, SD_BUS_ERROR_FAILED, SD_BUS_ERROR_NO_MEMORY,
   SD_BUS_ERROR_SERVICE_UNKNOWN, SD_BUS_ERROR_NAME_HAS_NO_OWNER,
   SD_BUS_ERROR_NO_REPLY, SD_BUS_ERROR_IO_ERROR, SD_BUS_ERROR_BAD_ADDRESS,
   SD_BUS_ERROR_NOT_SUPPORTED, SD_BUS_ERROR_LIMITS_EXCEEDED,
   SD_BUS_ERROR_ACCESS_DENIED, SD_BUS_ERROR_AUTH_FAILED,
   SD_BUS_ERROR_NO_SERVER, SD_BUS_ERROR_TIMEOUT, SD_BUS_ERROR_NO_NETWORK,
   SD_BUS_ERROR_ADDRESS_IN_USE, SD_BUS_ERROR_DISCONNECTED,
   SD_BUS_ERROR_INVALID_ARGS, SD_BUS_ERROR_FILE_NOT_FOUND,
   SD_BUS_ERROR_FILE_EXISTS, SD_BUS_ERROR_UNKNOWN_METHOD,
   SD_BUS_ERROR_UNKNOWN_OBJECT, SD_BUS_ERROR_UNKNOWN_INTERFACE,
   SD_BUS_ERROR_UNKNOWN_PROPERTY, SD_BUS_ERROR_PROPERTY_READ_ONLY,
   SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN, SD_BUS_ERROR_INVALID_SIGNATURE,
   SD_BUS_ERROR_INCONSISTENT_MESSAGE, SD_BUS_ERROR_MATCH_RULE_NOT_FOUND,
   SD_BUS_ERROR_MATCH_RULE_INVALID,
   SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED - Standard D-Bus error
   names

SYNOPSIS

   #include <systemd/sd-bus.h>

   #define SD_BUS_ERROR_FAILED                     "org.freedesktop.DBus.Error.Failed"
   #define SD_BUS_ERROR_NO_MEMORY                  "org.freedesktop.DBus.Error.NoMemory"
   #define SD_BUS_ERROR_SERVICE_UNKNOWN            "org.freedesktop.DBus.Error.ServiceUnknown"
   #define SD_BUS_ERROR_NAME_HAS_NO_OWNER          "org.freedesktop.DBus.Error.NameHasNoOwner"
   #define SD_BUS_ERROR_NO_REPLY                   "org.freedesktop.DBus.Error.NoReply"
   #define SD_BUS_ERROR_IO_ERROR                   "org.freedesktop.DBus.Error.IOError"
   #define SD_BUS_ERROR_BAD_ADDRESS                "org.freedesktop.DBus.Error.BadAddress"
   #define SD_BUS_ERROR_NOT_SUPPORTED              "org.freedesktop.DBus.Error.NotSupported"
   #define SD_BUS_ERROR_LIMITS_EXCEEDED            "org.freedesktop.DBus.Error.LimitsExceeded"
   #define SD_BUS_ERROR_ACCESS_DENIED              "org.freedesktop.DBus.Error.AccessDenied"
   #define SD_BUS_ERROR_AUTH_FAILED                "org.freedesktop.DBus.Error.AuthFailed"
   #define SD_BUS_ERROR_NO_SERVER                  "org.freedesktop.DBus.Error.NoServer"
   #define SD_BUS_ERROR_TIMEOUT                    "org.freedesktop.DBus.Error.Timeout"
   #define SD_BUS_ERROR_NO_NETWORK                 "org.freedesktop.DBus.Error.NoNetwork"
   #define SD_BUS_ERROR_ADDRESS_IN_USE             "org.freedesktop.DBus.Error.AddressInUse"
   #define SD_BUS_ERROR_DISCONNECTED               "org.freedesktop.DBus.Error.Disconnected"
   #define SD_BUS_ERROR_INVALID_ARGS               "org.freedesktop.DBus.Error.InvalidArgs"
   #define SD_BUS_ERROR_FILE_NOT_FOUND             "org.freedesktop.DBus.Error.FileNotFound"
   #define SD_BUS_ERROR_FILE_EXISTS                "org.freedesktop.DBus.Error.FileExists"
   #define SD_BUS_ERROR_UNKNOWN_METHOD             "org.freedesktop.DBus.Error.UnknownMethod"
   #define SD_BUS_ERROR_UNKNOWN_OBJECT             "org.freedesktop.DBus.Error.UnknownObject"
   #define SD_BUS_ERROR_UNKNOWN_INTERFACE          "org.freedesktop.DBus.Error.UnknownInterface"
   #define SD_BUS_ERROR_UNKNOWN_PROPERTY           "org.freedesktop.DBus.Error.UnknownProperty"
   #define SD_BUS_ERROR_PROPERTY_READ_ONLY         "org.freedesktop.DBus.Error.PropertyReadOnly"
   #define SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN    "org.freedesktop.DBus.Error.UnixProcessIdUnknown"
   #define SD_BUS_ERROR_INVALID_SIGNATURE          "org.freedesktop.DBus.Error.InvalidSignature"
   #define SD_BUS_ERROR_INCONSISTENT_MESSAGE       "org.freedesktop.DBus.Error.InconsistentMessage"
   #define SD_BUS_ERROR_MATCH_RULE_NOT_FOUND       "org.freedesktop.DBus.Error.MatchRuleNotFound"
   #define SD_BUS_ERROR_MATCH_RULE_INVALID         "org.freedesktop.DBus.Error.MatchRuleInvalid"
   #define SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED \
                                                   "org.freedesktop.DBus.Error.InteractiveAuthorizationRequired"

DESCRIPTION

   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.

NOTES

   The various error definitions described here are available as a shared
   library, which can be compiled and linked to with the libsystemd pkg-
   config(1) file.

SEE ALSO

   systemd(1), sd-bus(3), sd_bus_error(3),
   sd_bus_message_set_allow_interactive_authorization(3), errno(3),
   strerror(3)





Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.





Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.


Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.





Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.


Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.





Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.


Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.