NAME
          irChDefOwn - change the default owner for a channel

     SYNOPSIS
          #include <irapi.h>

          ir_key_t irChDefOwn (int chan, ir_key_t msgqkey);

     DESCRIPTION
          irChDefOwn is used to set or change the default owner for a
          channel chan.  The process that is to become the default
          owner is indicated by its message key msgqkey.  The message
          key for the current process is obtained when calling
          irRegister(3IRAPI) and the message key for another process
          can be obtained by calling irGetQKey(3IRAPI).

          This function is primarily intended for use by maintenance
          and application dispatch processes, but can be used by
          applications that require an alternate application dispatch
          process.  The process executing this command does not need
          to be the process identified by msgqkey.

          The channel will be returned to the default owner whenever
          the last owner de-init's the channel by calling
          irDeinit(3IRAPI) or irReturn(3IRAPI) or whenever the last
          owner exits via exit(2) or by a sudden exit (for example,
          dumping core).

          This function will not change the current owner of the chan-
          nel to the default owner; the new default owner must call
          irInit(3IRAPI) itself if it wants to assume ownership for
          the channel.

     EVENT
          No event is generated as a result of a call to irChDefOwn.

     RETURN VALUE
          If there was a prior default owner, the message key for the
          prior default owner is returned.  If the msgqkey is nega-
          tive, the message key for the current default owner is
          returned, but the default owner is not changed.  If there
          never was a default owner for this channel, or if the
          default owner has exited, irChDefOwn returns a zero.

          IRR_FAIL is returned if an error occurs.

     ERROR
          irError is set as follows if an error occurs:

          IRER_INVALID if chan is invalid.

          IRER_SYSERROR on system or driver call failure (see
          irSysError for additional information).

     SEE ALSO
          irRegister(3IRAPI), irGetQKey(3IRAPI)

     VERSION
          This is version 8/31/00 of this man page.