Re: [Xen-devel] [PATCH 2/4] tools/fuzz: add AFL stub program for x86 insn emulator fuzzer

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Jan 24, 2017 at 05:05:16PM +0000, Ian Jackson wrote:
> Wei Liu writes ("[PATCH 2/4] tools/fuzz: add AFL stub program for x86 insn 
> emulator fuzzer"):
> > This is a basic program to call into the unified fuzzing function.
> ...
> > +    fd = open(argv[1], O_RDONLY, 0);
> > +    assert(fd != -1);
> > +    size = read(fd, input, sizeof(input));
> 
> Why do you use open and read here rather than fopen and fread ?
> 

No particular reason.

> If you use read you ought to put it in a loop to cope with potential
> partial reads.
> 

Does fread have better properties than read? I think to deal with short
read we would need to stat the file to get actual size for both fread
and read, right? If so I will just stick with read and put that in a
loop.

Wei.

> Ian.

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