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From: jon@CSVAX.CALTECH.EDU (Jonathan P. Leech)
Newsgroups: mod.computers.vax
Subject: read() in VAX C 2.1 (VMS 4.2)
Message-ID: <8602250254.AA02340@csvax.caltech.edu>
Date: Mon, 24-Feb-86 21:54:24 EST
Article-I.D.: csvax.8602250254.AA02340
Posted: Mon Feb 24 21:54:24 1986
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	Is it a 'feature' of this release of DEC's C library that the
read() function will not read more than 1 RMS record at a time? I.e.
	fd = open("FOO", O_RDONLY, 0);
	bytes = read(fd, buffer, 1024);
invariably returns less than the requested 1024 bytes. If done on a .EXE
file, it returns 512 bytes (1 block); on a text file, it returns the number
of bytes in the first line, etc. Is there any way to defeat this behavior
with additional options to the open()? None of the RMS options mentioned
in table 18.2 in the C manual seem relevant, but I'm not familiar enough with
RMS to be sure.
	-- Jon Leech (jon@csvax.caltech.edu)
	__@/