why no fdopen() in dpANSI C? (was Re: Binary I/O on stdin/stdout?)

[Daniel R. Levy]

In article <8042 at elsie.UUCP>, ado at elsie.UUCP (Arthur David Olson) writes:
# > If UNIX needed this facility, and if it used "b" to indicate binary mode,
# > 	FILE *binin = fdopen(fileno(stdin), "rb");
# > 	FILE *binout= fdopen(fileno(stdout),"wb");
# > 	/* use bin_in, bin_out instead of stdin, stdout */
# > would do the job.  Would this work in MSDOS?
# 
# Whether or not it works in MSDOS, it wouldn't work in draft proposed ANSI C
# (which lacks an "fdopen" function).

Oh, GROAN.  Why not?  Sometims that's the most efficient way of getting a
stdio stream open onto a file which needs options on open() or creat() other
than the default, e.g. with permissions other than 0666&umask, or with a
special open parameter like System V's O_SYNC.
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