But I don't wanna do non-blocking I/O...

[Conor P. Cahill]

In article <397 at minya.UUCP> jc at minya.UUCP (John Chambers) writes:
>
>  [story of program where fgets() returns EOF on first read deleted]
>
>calling a shell.  The open() does include F_NDELAY, but
                                           ^^^^^^^^  I assume you mean O_NDELAY
>this is supposed to apply only to the open; it shouldn't
>set non-blocking I/O permanently for the file (I hope ;-).

You should RTFM (specifically the read(2) man page). Therein you should
find a paragraph similar to the following:

	When attempting to read a file associated with a tty that has no data
	currently available:

		If O_NDELAY is set, the read will return 0.
		If O_NDELAY is clear, the read will block until data becomes
		available.

If you don't want this behavior, you should use the fcntl(2) to change turn
off the O_NDELAY once the open has returned.

-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
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