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io_dontwantwrite(3)   DragonFly Library Functions Manual   io_dontwantwrite(3)

NAME
       io_dontwantwrite - signal that you do not want to write to a descriptor

SYNTAX
       #include <io.h>

       void io_dontwantwrite(int64 fd);

DESCRIPTION
       io_dontwantwrite tells the next io_wait() that you don't want to write
       to this descriptor for now.  Call io_wantwrite() again if you change
       your mind.

       You have to have called io_fd on the descriptor first (io_pipe and
       io_socketpair do this for you).  Waiting on descriptors only works for
       sockets, fifos and pipes.  It may also work on devices and TTYs, but
       that is platform dependent -- you should not rely on that.

SEE ALSO
       io_wait(3), io_canwrite(3), io_wantwrite(3), io_fd(3)

                                                           io_dontwantwrite(3)