Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!rit!cci632!tvf
From: tvf@cci632.UUCP (Tom Frauenhofer)
Newsgroups: comp.os.minix
Subject: Re: /usr/minix/amoeba/examples/client3.c
Message-ID: <27232@cci632.UUCP>
Date: 20 Mar 89 13:47:51 GMT
References: <11077@louie.udel.EDU>
Reply-To: tvf@ccird7.UUCP (Tom Frauenhofer)
Organization: CCI, Communications Systems Division, Rochester, NY
Lines: 19

In article <11077@louie.udel.EDU> jnall%FSU.BITNET@cunyvm.cuny.edu (John Nall 904-644-5241) writes:
>Therefore, I thought it was amusing that one of my students (a foreign
>student, actually, with a real language gap) who is just learning C
>pointed out to me that Andy's sample remote file client program,
>client3.c, does not work because the main routine has a read statement
>which is of the form  "if ((n=read(fd,buf,bytes) < 0))" and, as stated
>on page 15 of K&R, this always sets n to 0 or 1, rather than the number
>of bytes read.


The code is correct.  If there is an error with the read, it returns -1.
Check page 160, K&R, section 8.2 (Low Level I/O - Read and Write), the second
paragraph (the one that begins "Each call returns..." - the paragraph after
the sample code).

Thomas V. Frauenhofer	...!rutgers!rochester!cci632!ccird7!tvf
*or* ...!rochester!cci632!ccird7!frau!tvf *or* ...!rochester!rit!anna!ma!tvf1477
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