On Thu, Feb 24, 2011 at 12:25:16PM +0000, Carlo Marcelo Arenas Belon wrote:
> On Wed, Feb 23, 2011 at 09:42:56AM -0800, Bernard Li wrote:
> >
> > 123 read:
> > 124 read_len = read(fd, db, buflen);
> > 125 if (read_len <= 0)
> > 126 {
> > 127 if (errno == EINTR)
> > 128 goto read;
> > 129 err_ret("slurpfile() read() error on file %s", filename);
> > 130 close(fd);
> > 131 return SYNAPSE_FAILURE;
> > 132 }
>
> this code is not relevant as it is only called when EINTR is received
> because a signal interrupts the read call (very unlikely)
Shouldn't this be "if (read_len < 0)", a return of zero from read is
possible (EOF for example). If slurpfile is called with buffer=NULL and
buffsize equal or a multiple of the file size then we get
SYNAPSE_FAILURE. The errno check will be against an old value of errno
in this which makes it more likely to hit (still very unlikely though :)
and then we have an infinite loop...
Kostas
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