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io_wantread(3)		   Library Functions Manual		io_wantread(3)

NAME
       io_wantread - signal that you want to read from a descriptor

SYNTAX
       #include	<libowfat/io.h>

       void io_wantread(int64 fd);

DESCRIPTION
       io_wantread  tells  the	next io_wait() that you	want to	read from this
       descriptor.  Call io_dontwantread() again if you	change your mind.

       The next	time you call io_wait(), it will look whether this  descriptor
       becomes	readable, too.	You can	then use io_canread() to check whether
       the descriptor has become readable.

       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_canread(3), io_wantread(3), io_fd(3)

								io_wantread(3)

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